:root {
            /* === EDITORIAL PALETTE — Navy · Teal · Coral · Crimson === */
            /* Giữ nền tối, bỏ hẳn tông vàng/Bordeaux, chuyển sang navy + coral */
            --bg: #050505;
            /* Đen tuyệt đối */
            --bg2: #0a1420;
            /* Đen ám navy rất nhẹ */
            --bg3: #0e1a28;
            /* Navy đậm dùng làm card nền phụ */

            /* Palette chính */
            --navy: #0B3954;
            /* Navy sâu — background accent */
            --navy2: #164B6B;
            /* Navy nhạt hơn cho hover */
            --teal: #087E8B;
            /* Teal — link, highlight */
            --teal2: #0A96A6;
            /* Teal sáng cho hover */
            --pastel: #BFD7EA;
            /* Xanh pastel — subtitle, text phụ */
            --coral: #FF5A5F;
            /* Coral — điểm nhấn nóng, badge */
            --coral-soft: #ff7f83;
            /* Coral nhạt hover */
            --crimson: #C81D25;
            /* Crimson — CTA chính, giá */
            --crimson-deep: #9e1319;
            /* Crimson đậm cho hover pressed */

            /* Aliases — giữ tên cũ để không vỡ các rule đã có, trỏ vào palette mới */
            --red: var(--crimson);
            --red2: var(--coral);
            --gold: var(--teal);
            --gold2: var(--coral);
            --gold3: var(--pastel);
            --platinum: var(--pastel);
            --ivory: #ffffff;

            --text: #e8eef4;
            /* Trắng ám lạnh rất nhẹ */
            --muted: #7a8a99;
            /* Xám xanh editorial */
            --border: rgba(191, 215, 234, 0.1);
            /* Viền xanh pastel mờ */
            --border2: rgba(8, 126, 139, 0.35);
            /* Viền teal rõ hơn */
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-padding-top: 90px;
            /* chiều cao sticky-top: bar ~40px + header ~50px */
        }

        body {
            background:
                radial-gradient(ellipse 80% 60% at 50% 0%, rgba(11, 57, 84, 0.35) 0%, transparent 60%),
                radial-gradient(ellipse 100% 80% at 50% 100%, rgba(8, 126, 139, 0.08) 0%, transparent 70%),
                #050505;
            color: var(--text);
            font-family: 'Be Vietnam Pro', sans-serif;
            font-weight: 300;
            line-height: 1.7;
            overflow-x: hidden;
        }

        /* ========== NOISE OVERLAY ========== */
        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
            pointer-events: none;
            z-index: 0;
            opacity: 0.4;
        }

        /* ========== ANNOUNCEMENT BAR ========== */
        .announcement-bar {
            background: #1c0808;
            border-top: 1px solid rgba(192, 57, 43, 0.5);
            border-bottom: 2px solid rgba(192, 57, 43, 0.7);
            padding: 14px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        /* Nền đỏ pulse ở giữa */
        .announcement-bar::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse 70% 100% at 50% 50%, rgba(192, 57, 43, 0.22) 0%, transparent 70%);
            pointer-events: none;
            animation: barPulse 2.4s ease-in-out infinite;
        }

        @keyframes barPulse {

            0%,
            100% {
                opacity: 0.7;
            }

            50% {
                opacity: 1;
            }
        }

        /* Glow sweep nhanh hơn, sáng hơn */
        .announcement-bar::before {
            content: '';
            position: absolute;
            top: 0;
            left: -80%;
            width: 50%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(231, 76, 60, 0.25), transparent);
            animation: barSweep 2.2s ease-in-out infinite;
            pointer-events: none;
        }

        @keyframes barSweep {
            0% {
                left: -60%;
            }

            100% {
                left: 160%;
            }
        }

        /* Đường viền sáng trên cùng */
        .announcement-bar .bar-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            flex-wrap: nowrap;
            overflow: hidden;
        }

        .bar-main {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2.5px;
            text-transform: uppercase;
            color: var(--red2);
            text-shadow: 0 0 18px rgba(231, 76, 60, 0.7), 0 0 40px rgba(231, 76, 60, 0.3);
            animation: textGlow 2.4s ease-in-out infinite;
        }

        .bar-date,
        .bar-end {
            font-size: 12px;
            color: rgba(244, 236, 216, 0.6);
            letter-spacing: 1.5px;
            text-transform: uppercase;
        }

        .bar-sep {
            color: rgba(201, 168, 76, 0.4);
            font-size: 12px;
        }

        @keyframes textGlow {

            0%,
            100% {
                text-shadow: 0 0 12px rgba(231, 76, 60, 0.6), 0 0 30px rgba(231, 76, 60, 0.25);
            }

            50% {
                text-shadow: 0 0 20px rgba(231, 76, 60, 0.95), 0 0 50px rgba(231, 76, 60, 0.5), 0 0 80px rgba(231, 76, 60, 0.2);
            }
        }

        @media (max-width: 700px) {
            .announcement-bar {
                padding: 10px 16px;
            }

            .bar-date {
                display: none;
            }

            .bar-inner {
                overflow: hidden;
                max-width: 100%;
                gap: 6px;
            }

            .bar-main {
                font-size: 11px;
                letter-spacing: 1.5px;
            }

            .bar-end {
                font-size: 10px;
                letter-spacing: 1px;
            }

            .bar-sep {
                font-size: 10px;
            }
        }

        /* ========== HEADER ========== */
        .sticky-top {
            position: sticky;
            top: 0;
            z-index: 200;
            background: rgba(10, 10, 10, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }



        header {
            border-bottom: 1px solid var(--border);
            padding: 18px 40px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 14px;
            text-decoration: none;
            white-space: nowrap;
        }

        .logo-mark {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: #000;
            border: 1px solid rgba(201, 168, 76, 0.3);
            object-fit: cover;
            flex-shrink: 0;
        }

        .logo-text {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 28px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--text);
            line-height: 1;
            display: inline-flex;
            align-items: baseline;
            gap: 8px;
        }

        .logo-text em {
            color: var(--red2);
            font-style: normal;
        }

        /* === Hamburger toggle === */
        .nav-toggle {
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 0;
            position: relative;
            z-index: 320;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text);
            transition: transform 0.3s ease, opacity 0.2s ease;
            margin: 0 auto;
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* === Slide-in dropdown nav === */
        nav {
            position: fixed;
            top: 0;
            right: 0;
            width: 320px;
            max-width: 85vw;
            height: 100vh;
            background: linear-gradient(180deg, #0e0606 0%, #060303 100%);
            border-left: 1px solid rgba(201, 168, 76, 0.18);
            padding: 100px 0 40px;
            transform: translateX(100%);
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 310;
            display: flex;
            flex-direction: column;
            box-shadow: -20px 0 60px rgba(0, 0, 0, 0.6);
        }

        nav.active {
            transform: translateX(0);
        }

        nav a {
            color: rgba(244, 236, 216, 0.75);
            text-decoration: none;
            font-size: 15px;
            letter-spacing: 2.5px;
            text-transform: uppercase;
            padding: 18px 36px;
            transition: color 0.25s, background 0.25s, padding-left 0.3s;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            font-weight: 500;
        }

        nav a:hover {
            color: var(--red2);
            background: rgba(192, 57, 43, 0.06);
            padding-left: 42px;
        }

        /* === Nav backdrop === */
        .nav-backdrop {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            backdrop-filter: blur(3px);
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
            z-index: 300;
        }

        .nav-backdrop.active {
            opacity: 1;
            pointer-events: auto;
        }

        /* ========== HERO [BANNER IMAGE] ========== */
        .hero {
            padding: 0;
            position: relative;
            /* Nền radial đỏ-đen hòa với màu mép ảnh banner */
            background: radial-gradient(ellipse at center, #2a0a0a 0%, #1a0707 30%, #0a0303 60%, #050505 100%);
            overflow: hidden;
        }

        /* === Hero content on top of banner === */
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 860px;
            margin: 0 auto;
            padding: 70px 24px 40px;
            text-align: center;
            animation: fadeUp 0.9s ease both;
        }

        .hero-content .hero-kicker {
            display: inline-block;
            font-size: 11px;
            letter-spacing: 3px;
            text-transform: uppercase;
            color: var(--red2);
            padding: 6px 14px;
            border: 1px solid rgba(231, 76, 60, 0.4);
            border-radius: 999px;
            margin-bottom: 22px;
            background: rgba(192, 57, 43, 0.06);
        }

        .hero-content h1 {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 62px;
            line-height: 1.1;
            font-weight: 600;
            color: #f4ecd8;
            margin: 0 0 18px;
            letter-spacing: -0.5px;
        }

        .hero-content h1 em {
            font-style: italic;
            color: var(--red2);
            font-weight: 600;
        }

        .hero-content .hero-sub-text {
            font-size: 17px;
            line-height: 1.65;
            color: rgba(244, 236, 216, 0.75);
            max-width: 640px;
            margin: 0 auto 32px;
        }

        .hero-ctas {
            display: inline-flex;
            gap: 14px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .hero-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--red);
            color: #fff;
            padding: 14px 30px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            border: 1px solid var(--red);
            border-radius: 2px;
            text-decoration: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 18px rgba(192, 57, 43, 0.35);
        }

        .hero-btn-primary:hover {
            background: var(--red2);
            border-color: var(--red2);
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(231, 76, 60, 0.5);
        }

        .hero-btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: rgba(244, 236, 216, 0.7);
            padding: 14px 24px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            border: 1px solid rgba(244, 236, 216, 0.2);
            border-radius: 2px;
            text-decoration: none;
            cursor: pointer;
            background: transparent;
            transition: all 0.3s ease;
        }

        .hero-btn-ghost:hover {
            border-color: rgba(244, 236, 216, 0.5);
            color: #fff;
        }

        /* Hide Zalo float button while any modal is open */
        body.modal-open .zalo-float {
            opacity: 0;
            pointer-events: none;
            transform: translateY(20px);
            transition: opacity 0.2s ease, transform 0.2s ease;
        }

        .hero-banner {
            width: 100%;
            max-width: 1180px;
            margin: 0 auto;
            position: relative;
            animation: fadeUp 0.9s ease both;
            /* Fade 2 mép trái-phải của ảnh ra nền, không còn đường viền */
            -webkit-mask-image: linear-gradient(to right,
                    transparent 0%,
                    #000 6%,
                    #000 94%,
                    transparent 100%);
            mask-image: linear-gradient(to right,
                    transparent 0%,
                    #000 6%,
                    #000 94%,
                    transparent 100%);
        }

        .hero-banner img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* Vignette nhẹ — tăng cảm giác chiều sâu */
        .hero-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at center, rgba(0, 0, 0, 0) 40%, rgba(0, 0, 0, 0.45) 100%);
            pointer-events: none;
        }

        .stat-item {
            text-align: center;
        }

        .stat-num {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 18px;
            font-weight: 380;
            color: var(--gold);
            display: block;
        }

        .stat-label {
            font-size: 9px;
            color: var(--muted);
            letter-spacing: 0, 9px;
            text-transform: uppercase;
        }

        /* ========== [UPDATED] FEEDBACK SECTION — carousel 9:16 ========== */
        .feedback-section {
            background: var(--bg2);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 64px 0 64px;
            overflow: hidden;
        }

        .feedback-section-header {
            padding: 0 40px;
            margin-bottom: 36px;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
        }

        .feedback-section-header .section-label {
            display: block;
            margin-bottom: 12px;
        }

        .feedback-section-header .section-title {
            margin-bottom: 0;
        }

        .carousel-nav {
            display: flex;
            gap: 8px;
            flex-shrink: 0;
        }

        .carousel-btn {
            width: 40px;
            height: 40px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--muted);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s;
            font-size: 16px;
            flex-shrink: 0;
        }

        .carousel-btn:hover {
            border-color: rgba(255, 255, 255, 0.4);
            color: var(--text);
        }

        .carousel-btn:disabled {
            opacity: 0.25;
            cursor: default;
        }

        .carousel-track-wrap {
            overflow: hidden;
            padding: 0 40px;
        }

        .carousel-track {
            display: flex;
            gap: 12px;
            transition: transform 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            will-change: transform;
            cursor: grab;
            user-select: none;
        }

        .carousel-track.dragging {
            cursor: grabbing;
            transition: none;
        }

        .fb-item {
            flex: 0 0 auto;
            width: 200px;
            aspect-ratio: 9 / 16;
            border: 1px solid var(--border);
            overflow: hidden;
            position: relative;
            cursor: zoom-in;
            transition: border-color 0.25s;
        }

        .fb-item:hover {
            border-color: rgba(255, 255, 255, 0.2);
        }

        .fb-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: top;
            display: block;
            transition: transform 0.4s ease;
            pointer-events: none;
        }

        .fb-item:hover img {
            transform: scale(1.03);
        }

        .carousel-dots {
            display: flex;
            justify-content: center;
            gap: 6px;
            margin-top: 24px;
            padding: 0 40px;
        }

        .carousel-dot {
            width: 24px;
            height: 2px;
            background: rgba(255, 255, 255, 0.15);
            cursor: pointer;
            transition: background 0.2s, width 0.2s;
        }

        .carousel-dot.active {
            background: var(--gold);
            width: 40px;
        }

        .fb-lightbox {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.94);
            z-index: 3000;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 24px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.25s ease;
            backdrop-filter: blur(10px);
            cursor: zoom-out;
        }

        .fb-lightbox.active {
            opacity: 1;
            pointer-events: all;
        }

        .fb-lightbox img {
            max-height: 90vh;
            max-width: min(90vw, 420px);
            object-fit: contain;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transform: scale(0.95);
            transition: transform 0.25s ease;
        }

        .fb-lightbox.active img {
            transform: scale(1);
        }

        @media (max-width: 900px) {
            .feedback-section {
                padding: 48px 0;
            }

            .feedback-section-header {
                padding: 0 20px;
            }

            .carousel-track-wrap {
                padding: 0 20px;
            }

            .fb-item {
                width: 160px;
            }
        }

        @media (max-width: 500px) {
            .fb-item {
                width: 140px;
            }
        }

        /* ========== FEATURED BOOKS ========== */
        .section {
            padding: 80px 40px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .section-label {
            font-size: 11px;
            letter-spacing: 3px;
            text-transform: uppercase;
            color: var(--red);
            margin-bottom: 12px;
        }

        .section-title {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: clamp(32px, 4.5vw, 48px);
            font-weight: 700;
            margin-bottom: 48px;
            position: relative;
            display: inline-block;
            letter-spacing: -0.3px;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 60px;
            height: 2px;
            background: var(--red);
        }

        /* Featured 2 books */
        .price-box {
            margin-top: 10px;
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        /* [CHANGED] Giá to hơn, rõ hơn */
        .price-main {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 40px;
            font-weight: 900;
            color: var(--gold);
            margin-bottom: 4px;
            letter-spacing: 0;
            line-height: 1;
        }

        .price-main::after {
            content: "Giá trọn đời · Nhận ngay";
            display: block;
            font-size: 11px;
            color: rgba(201, 168, 76, 0.6);
            margin-top: 6px;
            font-family: 'Be Vietnam Pro', sans-serif;
            font-weight: 400;
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        .cta-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-top: 20px;
        }

        /* [CHANGED] btn-buy — mạnh hơn, hover mạnh hơn */
        .btn-buy {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #c0392b, #e74c3c);
            box-shadow: 0 6px 24px rgba(192, 57, 43, 0.4);
            color: #fff;
            border: none;
            padding: 16px 28px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            cursor: pointer;
            transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
            text-decoration: none;
            font-family: 'Be Vietnam Pro', sans-serif;
            width: 100%;
        }

        .btn-buy:hover {
            background: linear-gradient(135deg, #a93226, #c0392b);
            transform: translateY(-3px);
            box-shadow: 0 14px 32px rgba(192, 57, 43, 0.55);
        }

        .btn-buy:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(192, 57, 43, 0.3);
        }

        /* [NEW] Dòng nhỏ dưới nút CTA chính */
        .cta-hint {
            font-size: 11px;
            color: var(--muted);
            text-align: center;
            letter-spacing: 0.5px;
            opacity: 0.7;
            margin-top: 2px;
        }

        /* [CHANGED] btn-learn — yếu đi rõ ràng */
        .btn-learn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--muted);
            padding: 10px 20px;
            font-size: 12px;
            font-weight: 400;
            letter-spacing: 0.5px;
            cursor: pointer;
            transition: all 0.3s;
            font-family: 'Be Vietnam Pro', sans-serif;
            white-space: nowrap;
            width: 100%;
            text-decoration: none;
        }

        .btn-learn:hover {
            border-color: rgba(255, 255, 255, 0.2);
            color: rgba(240, 236, 228, 0.6);
            background: transparent;
        }

        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2px;
            margin-bottom: 80px;
            border: 1px solid var(--border);
        }

        .featured-card {
            position: relative;
            overflow: hidden;
            background: var(--bg2);
            display: flex;
            flex-direction: column;
            transition: transform 0.4s ease;
        }

        .featured-card:hover {
            z-index: 2;
        }

        .featured-card .book-img-wrap {
            position: relative;
            aspect-ratio: 2/3;
            overflow: hidden;
        }

        .featured-card .book-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: top;
            transition: transform 0.6s ease;
            filter: brightness(0.85);
        }

        .featured-card:hover .book-img-wrap img {
            transform: scale(1.05);
            filter: brightness(1);
        }

        .new-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--red);
            color: #fff;
            font-size: 10px;
            letter-spacing: 2px;
            text-transform: uppercase;
            padding: 4px 12px;
            font-weight: 600;
        }

        /* [NEW] Badge khan hiếm */
        .scarcity-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            background: rgba(10, 10, 10, 0.85);
            border: 1px solid rgba(201, 168, 76, 0.4);
            color: var(--gold);
            font-size: 9px;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            padding: 4px 10px;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }

        .featured-card .card-body {
            padding: 28px 32px 32px;
            flex: 1;
            display: flex;
            flex-direction: column;
            border-top: 1px solid var(--border);
        }

        .featured-card h3 {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.25;
        }

        /* [NEW] Pain point tag */
        .pain-tag {
            font-size: 11px;
            color: var(--red2);
            letter-spacing: 0.5px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .pain-tag::before {
            content: '';
            display: inline-block;
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--red2);
            flex-shrink: 0;
        }

        .featured-card .desc {
            color: var(--muted);
            font-size: 14px;
            margin-bottom: 10px;
            flex: 1;
            line-height: 1.5;
            opacity: 0.6;
        }

        .featured-card {
            transition: transform 0.25s ease;
        }

        .featured-card:hover {
            transform: translateY(-4px);
        }

        /* [NEW] Benefit line — kết quả rõ ràng */
        .benefit-line {
            font-size: 13px;
            color: rgba(240, 236, 228, 0.75);
            margin-bottom: 20px;
            padding: 10px 14px;
            background: rgba(201, 168, 76, 0.06);
            border-left: 2px solid rgba(201, 168, 76, 0.4);
            line-height: 1.6;
        }

        /* [NEW] Scarcity text dưới card */
        .scarcity-text {
            font-size: 11px;
            color: rgba(192, 57, 43, 0.7);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .scarcity-text::before {
            content: '—';
            opacity: 0.5;
        }

        .featured-card .price-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .price-fixed {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 26px;
            font-weight: 700;
            color: var(--gold);
        }

        .price-row {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .price-row-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* Detail modal */
        .detail-modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.92);
            z-index: 2000;
            display: flex;
            align-items: flex-start;
            justify-content: center;
            padding: 40px 20px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s;
            backdrop-filter: blur(8px);
            overflow-y: auto;
        }

        .detail-modal-overlay.active {
            opacity: 1;
            pointer-events: all;
        }

        .detail-modal {
            background: #0f0f0f;
            border: 1px solid rgba(255, 255, 255, 0.08);
            max-width: 720px;
            width: 100%;
            position: relative;
            transform: translateY(30px);
            transition: transform 0.4s ease;
        }

        .detail-modal-overlay.active .detail-modal {
            transform: translateY(0);
        }

        .detail-modal-close {
            position: absolute;
            top: 20px;
            right: 24px;
            background: none;
            border: none;
            color: var(--muted);
            font-size: 28px;
            cursor: pointer;
            line-height: 1;
            z-index: 10;
            transition: color 0.2s;
        }

        .detail-modal-close:hover {
            color: var(--text);
        }

        .detail-hero {
            position: relative;
            height: 280px;
            overflow: hidden;
        }

        .detail-hero img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: top;
            filter: brightness(0.4);
        }

        .detail-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, transparent 20%, #0f0f0f 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 32px;
        }

        .detail-hero-tag {
            font-size: 10px;
            letter-spacing: 3px;
            text-transform: uppercase;
            color: var(--red2);
            margin-bottom: 8px;
        }

        .detail-hero h2 {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: clamp(22px, 4vw, 34px);
            font-weight: 900;
            line-height: 1.15;
            color: var(--text);
        }

        .detail-body {
            padding: 32px;
        }

        .detail-subtitle {
            font-size: 15px;
            color: var(--gold);
            font-style: italic;
            margin-bottom: 24px;
            line-height: 1.6;
        }

        .detail-text {
            font-size: 14px;
            color: rgba(240, 236, 228, 0.75);
            line-height: 1.9;
            margin-bottom: 14px;
        }

        .detail-text strong {
            color: var(--text);
            font-weight: 600;
        }

        .detail-section-title {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 18px;
            font-weight: 700;
            color: var(--red2);
            margin: 28px 0 16px;
            padding-bottom: 8px;
            border-bottom: 1px solid rgba(192, 57, 43, 0.25);
        }

        .detail-item {
            margin-bottom: 20px;
            padding-left: 16px;
            border-left: 2px solid rgba(192, 57, 43, 0.3);
        }

        .detail-item h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
        }

        .detail-item p {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.7;
        }

        .detail-cta {
            margin-top: 32px;
            padding: 24px;
            background: rgba(192, 57, 43, 0.08);
            border: 1px solid rgba(192, 57, 43, 0.2);
            text-align: center;
        }

        .detail-cta p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .detail-cta p em {
            color: var(--text);
            font-style: normal;
        }

        .detail-price-big {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 40px;
            font-weight: 900;
            color: var(--gold);
            display: block;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }

        .detail-cta-btns {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* [CHANGED] btn-buy in detail modal — full width */
        .detail-cta-btns .btn-buy {
            min-width: 220px;
        }


        .books-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1px;
            background: var(--border);
            border: 1px solid var(--border);
        }

        .book-card {
            background: var(--bg2);
            overflow: hidden;
            position: relative;
            transition: background 0.3s;
            display: flex;
            flex-direction: column;
        }

        .book-card:hover {
            background: var(--bg3);
        }

        .book-card .img-wrap {
            aspect-ratio: 2/3;
            overflow: hidden;
            position: relative;
        }

        .book-card .img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: top;
            transition: transform 0.5s ease, filter 0.5s ease;
            filter: brightness(0.8);
        }

        .book-card:hover .img-wrap img {
            transform: scale(1.06);
            filter: brightness(1);
        }

        .book-card .info {
            padding: 20px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .book-card h4 {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 6px;
            line-height: 1.3;
        }

        /* [NEW] Pain point nhỏ cho book-card */
        .card-pain {
            font-size: 11px;
            color: var(--red2);
            margin-bottom: 8px;
            opacity: 0.8;
        }

        .book-card .desc {
            font-size: 12px;
            color: var(--muted);
            flex: 1;
            margin-bottom: 12px;
            line-height: 1.6;
        }

        /* [NEW] Benefit nhỏ cho book-card */
        .card-benefit {
            font-size: 11px;
            color: rgba(201, 168, 76, 0.7);
            margin-bottom: 12px;
            padding: 7px 10px;
            background: rgba(201, 168, 76, 0.05);
            border-left: 1px solid rgba(201, 168, 76, 0.3);
            line-height: 1.5;
        }

        /* [NEW] Bundle — bậc trung gian */
        .bundle-section {
            margin: 60px auto 0;
            max-width: 980px;
            position: relative;
        }

        .bundle-card {
            position: relative;
            background:
                linear-gradient(135deg, rgba(201, 168, 76, 0.08) 0%, rgba(192, 57, 43, 0.05) 100%),
                var(--bg2);
            border: 1px solid rgba(201, 168, 76, 0.35);
            padding: 36px 40px;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 32px;
            align-items: center;
            overflow: hidden;
        }

        .bundle-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: linear-gradient(180deg, var(--gold), transparent);
        }

        .bundle-ribbon {
            position: absolute;
            top: 0;
            right: 32px;
            background: var(--red);
            color: #fff;
            font-size: 10px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            padding: 5px 14px;
            box-shadow: 0 4px 12px rgba(192, 57, 43, 0.4);
        }

        .bundle-left .bundle-label {
            display: inline-block;
            font-size: 11px;
            letter-spacing: 2.5px;
            text-transform: uppercase;
            color: var(--gold);
            margin-bottom: 10px;
        }

        .bundle-left h3 {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 10px;
            line-height: 1.25;
        }

        .bundle-left h3 em {
            color: var(--gold);
            font-style: italic;
            font-weight: 500;
        }

        .bundle-desc {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.65;
            margin: 0 0 14px;
            max-width: 520px;
        }

        .bundle-perks {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 18px;
            font-size: 12px;
            color: rgba(244, 236, 216, 0.75);
        }

        .bundle-perks span::before {
            content: '✓';
            color: var(--gold);
            font-weight: 700;
            margin-right: 6px;
        }

        /* [NEW] Dòng quà tặng — cuốn phong ấn Giải Phẫu Quyền Lực Sinh Học */
        .bundle-bonus {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            margin-top: 14px;
            padding: 11px 14px;
            border: 1px solid rgba(201, 168, 76, 0.4);
            border-radius: 10px;
            background: linear-gradient(180deg, rgba(201,168,76,0.08), rgba(201,168,76,0.02));
            font-size: 12.5px;
            line-height: 1.55;
            color: rgba(244, 236, 216, 0.9);
        }
        .bundle-bonus .bundle-bonus-icon {
            flex: 0 0 auto;
            font-size: 15px;
            line-height: 1.3;
        }
        .bundle-bonus strong { color: var(--gold, #C9A227); font-weight: 700; }
        .bundle-bonus .bundle-bonus-note {
            display: block;
            margin-top: 2px;
            font-size: 11px;
            color: rgba(244, 236, 216, 0.55);
            font-style: italic;
        }

        .bundle-right {
            text-align: center;
            padding-left: 28px;
            border-left: 1px solid rgba(201, 168, 76, 0.18);
        }

        .bundle-price-old {
            font-size: 14px;
            color: var(--muted);
            text-decoration: line-through;
            text-decoration-color: rgba(192, 57, 43, 0.55);
            margin-bottom: 4px;
        }

        .bundle-price-new {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 36px;
            font-weight: 700;
            color: var(--text);
            line-height: 1;
            margin-bottom: 4px;
        }

        .bundle-price-save {
            font-size: 11px;
            color: var(--gold);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .bundle-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--gold);
            color: #1a1105;
            padding: 12px 26px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            box-shadow: 0 4px 14px rgba(201, 168, 76, 0.3);
        }

        .bundle-btn:hover {
            background: var(--gold2);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .bundle-card {
                grid-template-columns: 1fr;
                padding: 28px 22px;
                gap: 22px;
            }

            .bundle-right {
                padding-left: 0;
                border-left: none;
                border-top: 1px solid rgba(201, 168, 76, 0.18);
                padding-top: 22px;
            }

            .bundle-left h3 {
                font-size: 22px;
            }

            .bundle-ribbon {
                right: 16px;
                font-size: 9px;
                padding: 4px 10px;
            }
        }

        /* ====== [PREMIUM COMBO] — combo 3 tài liệu premium ====== */
        .bundle-card-premium {
            background:
                linear-gradient(135deg, rgba(139, 47, 47, 0.12) 0%, rgba(201, 168, 76, 0.10) 60%, rgba(10, 10, 10, 0.6) 100%),
                #0d0d10;
            border: 1px solid rgba(201, 168, 76, 0.55);
            box-shadow: 0 18px 50px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(201, 168, 76, 0.08) inset;
            margin-bottom: 28px;
        }

        .bundle-card-premium::before {
            background: linear-gradient(180deg, #e8c76f 0%, #8b2f2f 60%, transparent 100%);
            width: 4px;
        }

        .bundle-card-premium .bundle-ribbon {
            background: linear-gradient(135deg, #8b2f2f 0%, #b03a3a 100%);
            box-shadow: 0 4px 16px rgba(139, 47, 47, 0.55);
            font-size: 11px;
            padding: 6px 16px;
        }

        .bundle-card-premium .bundle-label {
            color: #e8c76f;
            letter-spacing: 3px;
        }

        .bundle-card-premium h3 {
            font-size: 28px;
            color: #f4ecd8;
        }

        .bundle-card-premium h3 em {
            color: #e8c76f;
        }

        .bundle-card-premium .bundle-perks span::before {
            color: #e8c76f;
        }

        .bundle-card-premium .bundle-right {
            border-left-color: rgba(201, 168, 76, 0.32);
        }

        .bundle-card-premium .bundle-price-new {
            font-size: 40px;
            color: #f4ecd8;
        }

        .bundle-card-premium .bundle-price-save {
            color: #e8c76f;
        }

        .bundle-card-premium .bundle-btn {
            background: linear-gradient(135deg, #e8c76f 0%, #c9a961 100%);
            color: #1a1105;
            padding: 14px 30px;
            font-size: 13px;
            box-shadow: 0 6px 20px rgba(232, 199, 111, 0.35);
        }

        .bundle-card-premium .bundle-btn:hover {
            background: linear-gradient(135deg, #f2d585 0%, #d4b26a 100%);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .bundle-card-premium h3 {
                font-size: 22px;
            }

            .bundle-card-premium .bundle-price-new {
                font-size: 32px;
            }
        }

        /* [NEW] Badge bán chạy trên book-card */
        .bestseller-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: linear-gradient(135deg, #c9a84c 0%, #f0c96e 100%);
            color: #1a1105;
            font-family: 'Inter', sans-serif;
            font-size: 10px;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            padding: 4px 10px;
            border-radius: 2px;
            box-shadow: 0 4px 12px rgba(201, 168, 76, 0.35);
            z-index: 2;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .bestseller-badge::before {
            content: '★';
            font-size: 11px;
        }

        /* [NEW] Badge "Mới" trên book-card — phân biệt với bestseller-badge (gold) */
        .new-badge-card {
            position: absolute;
            top: 12px;
            left: 12px;
            background: linear-gradient(135deg, #d23a2c 0%, #f25444 100%);
            color: #fff;
            font-family: 'Inter', sans-serif;
            font-size: 10px;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            padding: 4px 10px;
            border-radius: 2px;
            box-shadow: 0 4px 12px rgba(210, 58, 44, 0.35);
            z-index: 2;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .new-badge-card::before {
            content: '✦';
            font-size: 11px;
        }

        /* [NEW] Filter tabs cho Donate */
        .filter-tabs {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 8px;
            margin: 8px auto 40px;
            max-width: 800px;
        }

        .filter-tab {
            background: transparent;
            border: 1px solid rgba(201, 168, 76, 0.25);
            color: rgba(244, 236, 216, 0.7);
            font-family: 'Inter', sans-serif;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 1px;
            text-transform: uppercase;
            padding: 9px 18px;
            cursor: pointer;
            transition: all 0.25s ease;
            border-radius: 2px;
            position: relative;
        }

        .filter-tab:hover {
            border-color: rgba(201, 168, 76, 0.55);
            color: var(--text);
        }

        .filter-tab.active {
            background: var(--gold);
            border-color: var(--gold);
            color: #1a1105;
            box-shadow: 0 4px 14px rgba(201, 168, 76, 0.25);
        }

        .filter-tab .tab-count {
            display: inline-block;
            margin-left: 6px;
            font-size: 10px;
            opacity: 0.65;
            font-weight: 500;
        }

        .filter-tab.active .tab-count {
            opacity: 0.75;
        }

        .book-card[data-hidden="true"] {
            display: none;
        }

        @media (max-width: 600px) {
            .filter-tabs {
                gap: 6px;
                margin: 4px auto 28px;
            }

            .filter-tab {
                padding: 8px 14px;
                font-size: 11px;
                letter-spacing: 0.5px;
            }
        }

        .donate-label {
            font-size: 11px;
            color: var(--gold);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 2px;
        }

        /* [CHANGED] donate-range — to hơn */
        .donate-range {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            display: inline-flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        .donate-self {
            font-family: 'Inter', sans-serif;
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            color: var(--gold);
            background: rgba(201, 168, 76, 0.10);
            border: 1px solid rgba(201, 168, 76, 0.45);
            padding: 3px 9px;
            border-radius: 999px;
            white-space: nowrap;
            line-height: 1.4;
        }

        .donate-suggest {
            font-family: 'Inter', sans-serif;
            font-size: 12px;
            color: var(--muted);
            margin: -6px 0 10px;
            line-height: 1.5;
        }

        .donate-suggest strong {
            color: var(--gold);
            font-weight: 600;
        }

        .btn-donate {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: 1px solid rgba(192, 57, 43, 0.5);
            color: var(--red2);
            background: transparent;
            padding: 9px 16px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            cursor: pointer;
            transition: all 0.25s;
            font-family: 'Be Vietnam Pro', sans-serif;
            text-align: center;
            width: 100%;
            justify-content: center;
        }

        .btn-donate:hover {
            background: var(--red);
            border-color: var(--red);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(192, 57, 43, 0.35);
        }

        /* [NEW] Dòng nhỏ dưới btn-donate */
        .donate-hint {
            font-size: 10px;
            color: var(--muted);
            text-align: center;
            margin-top: 5px;
            opacity: 0.6;
            letter-spacing: 0.5px;
        }

        .btn-preview {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--muted);
            background: transparent;
            padding: 8px 16px;
            font-size: 11px;
            font-weight: 500;
            letter-spacing: 1px;
            text-transform: uppercase;
            cursor: pointer;
            transition: all 0.3s;
            font-family: 'Be Vietnam Pro', sans-serif;
            width: 100%;
            margin-top: 6px;
            text-decoration: none;
        }

        .btn-preview:hover {
            border-color: rgba(255, 255, 255, 0.2);
            color: rgba(240, 236, 228, 0.5);
            background: transparent;
        }

        .btn-preview svg {
            flex-shrink: 0;
        }

        /* QR in modal */
        .modal-qr-wrap {
            margin-top: 16px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }

        .modal-qr-wrap img {
            width: 140px;
            height: 140px;
            object-fit: cover;
            border-radius: 8px;
            border: 1px solid var(--border);
        }

        .modal-qr-label {
            font-size: 11px;
            color: var(--muted);
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        /* ========== PAYMENT MODAL ========== */
        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.85);
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s;
            backdrop-filter: blur(6px);
        }

        .modal-overlay.active {
            opacity: 1;
            pointer-events: all;
        }

        .modal {
            background: #141414;
            border: 1px solid var(--border);
            max-width: 520px;
            width: 100%;
            padding: 40px;
            position: relative;
            transform: translateY(20px);
            transition: transform 0.3s;
        }

        .modal-overlay.active .modal {
            transform: translateY(0);
        }

        .modal-close {
            position: absolute;
            top: 16px;
            right: 20px;
            background: none;
            border: none;
            color: var(--muted);
            font-size: 24px;
            cursor: pointer;
            line-height: 1;
            transition: color 0.2s;
        }

        .modal-close:hover {
            color: var(--text);
        }

        .modal-book-title {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .modal-price {
            font-size: 13px;
            color: var(--gold);
            margin-bottom: 28px;
            letter-spacing: 1px;
        }

        .bank-info {
            background: var(--bg3);
            border: 1px solid var(--border);
            padding: 20px 24px;
            margin-bottom: 20px;
        }

        .bank-info h4 {
            font-size: 11px;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--muted);
            margin-bottom: 14px;
        }

        .bank-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 8px 0;
            font-size: 14px;
            border-bottom: 1px solid var(--border);
        }

        .bank-row:last-child {
            border-bottom: none;
        }

        .bank-key {
            color: var(--muted);
            font-size: 12px;
        }

        .bank-val {
            font-weight: 500;
            color: var(--text);
        }

        /* [CHANGED] highlight STK — to hơn */
        .bank-val.highlight {
            color: var(--gold);
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 18px;
        }

        .modal-note {
            font-size: 12px;
            color: var(--muted);
            line-height: 1.7;
            margin-bottom: 20px;
            padding: 14px 16px;
            background: rgba(192, 57, 43, 0.08);
            border-left: 2px solid var(--red);
        }

        .modal-note strong {
            color: var(--red2);
        }

        .modal-note .example {
            display: inline-block;
            margin-top: 6px;
            color: var(--gold);
            font-style: italic;
        }

        /* ========== HOW IT WORKS — ĐÃ SỬA ========== */
        .how-section {
            background: var(--bg2);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 80px 40px;
        }

        .how-inner {
            max-width: 1200px;
            margin: 0 auto;
        }

        /* [CHANGED] Steps — 4 bước rõ ràng, ngân hàng nổi bật */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2px;
            background: var(--border);
            border: 1px solid var(--border);
            margin-top: 48px;
        }

        .step-card {
            background: var(--bg);
            padding: 32px 28px;
            position: relative;
        }

        .step-card.step-highlight {
            background: #0d0806;
            border-left: 2px solid rgba(201, 168, 76, 0.4);
        }

        .step-num {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 48px;
            font-weight: 900;
            color: rgba(192, 57, 43, 0.8);
            text-shadow: 0 4px 20px rgba(192, 57, 43, 0.3);
            line-height: 1;
            margin-bottom: 16px;
        }

        .step-title {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .step-desc {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.7;
        }

        /* [NEW] Nổi bật STK trong step */
        .step-bank-highlight {
            margin-top: 14px;
            padding: 12px 16px;
            background: rgba(201, 168, 76, 0.08);
            border: 1px solid rgba(201, 168, 76, 0.2);
        }

        .step-bank-name {
            font-size: 10px;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--muted);
            margin-bottom: 4px;
        }

        .step-bank-stk {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 22px;
            font-weight: 900;
            color: var(--gold);
            letter-spacing: 2px;
            display: block;
        }

        .step-bank-owner {
            font-size: 12px;
            color: rgba(240, 236, 228, 0.5);
            margin-top: 3px;
        }

        /* ========== COPY BUTTON ========== */
        .copy-wrap {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            user-select: none;
        }

        .copy-btn {
            background: rgba(201, 168, 76, 0.12);
            border: 1px solid rgba(201, 168, 76, 0.3);
            color: var(--gold);
            font-size: 11px;
            padding: 3px 10px;
            cursor: pointer;
            transition: all 0.2s;
            font-family: 'Be Vietnam Pro', sans-serif;
            letter-spacing: 0.5px;
            border-radius: 2px;
            white-space: nowrap;
        }

        .copy-btn:hover {
            background: rgba(201, 168, 76, 0.25);
        }

        .copy-btn.copied {
            background: rgba(39, 174, 96, 0.2);
            border-color: rgba(39, 174, 96, 0.4);
            color: #2ecc71;
        }

        /* ========== [NEW] TRUST / CAM KẾT SECTION ========== */
        .trust-section {
            background: #0d0d0d;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 64px 40px;
        }

        .trust-inner {
            max-width: 900px;
            margin: 0 auto;
        }

        .trust-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .trust-header .section-label {
            display: block;
            margin-bottom: 10px;
        }

        .trust-header h2 {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
        }

        .trust-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2px;
            background: var(--border);
            border: 1px solid var(--border);
        }

        .trust-item {
            background: #111;
            padding: 28px 24px;
        }

        .trust-icon {
            font-size: 22px;
            margin-bottom: 14px;
            display: block;
        }

        .trust-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .trust-desc {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.7;
        }

        .trust-commitment {
            margin-top: 32px;
            padding: 20px 28px;
            border: 1px solid rgba(201, 168, 76, 0.15);
            background: rgba(201, 168, 76, 0.03);
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .trust-commitment-icon {
            font-size: 28px;
            flex-shrink: 0;
        }

        .trust-commitment-text {
            font-size: 14px;
            color: rgba(240, 236, 228, 0.7);
            line-height: 1.8;
        }

        .trust-commitment-text strong {
            color: var(--gold);
            font-weight: 600;
        }

        /* ========== SUPPORT SECTION ========== */
        .support-section {
            background: var(--bg);
            border-top: 1px solid var(--border);
            padding: 80px 40px;
        }

        .support-inner {
            max-width: 1200px;
            margin: 0 auto;
        }

        .support-note {
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 32px;
            padding-bottom: 28px;
            border-bottom: 1px solid var(--border);
            line-height: 1.8;
        }

        .support-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2px;
            background: var(--border);
            border: 1px solid var(--border);
            margin-top: 40px;
        }

        .support-card {
            background: #1c0c0c;
            padding: 32px 28px;
            transition: background 0.3s;
        }

        .support-card:hover {
            background: #230d0d;
        }

        .support-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--red);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            font-size: 20px;
        }

        .support-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
        }

        .support-desc {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.7;
        }

        .support-desc a {
            color: var(--red2);
            text-decoration: none;
        }

        .support-desc a:hover {
            text-decoration: underline;
        }

        /* ========== FOOTER ========== */
        footer {
            padding: 40px;
            text-align: center;
            border-top: 1px solid var(--border);
            color: var(--muted);
            font-size: 13px;
        }

        footer .footer-logo {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 20px;
            color: var(--gold);
            margin-bottom: 12px;
        }

        /* ========== ANIMATIONS ========== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }

        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 900px) {
            header {
                padding: 16px 20px;
            }

            .logo-mark {
                width: 36px;
                height: 36px;
            }

            .logo-text {
                font-size: 20px;
                letter-spacing: 1.5px;
                gap: 6px;
            }

            /* HERO mobile — đồng nhất với desktop: ảnh đầy đủ, không crop */
            .hero-content {
                padding: 50px 18px 28px;
            }

            .hero-content h1 {
                font-size: 40px;
                letter-spacing: -0.3px;
            }

            .hero-content .hero-sub-text {
                font-size: 15px;
                margin-bottom: 26px;
            }

            .hero-content .hero-kicker {
                font-size: 10px;
                letter-spacing: 2px;
                margin-bottom: 18px;
            }

            .hero-btn-primary,
            .hero-btn-ghost {
                padding: 12px 20px;
                font-size: 12px;
            }

            .hero-banner {
                max-width: 100%;
                width: 100%;
                margin: 0 auto;
                /* Giữ mask fade + vignette giống desktop */
            }

            .hero-banner img {
                width: 100%;
                height: auto;
                display: block;
            }

            .hero-stats {
                gap: 28px;
            }

            .section {
                padding: 60px 20px;
            }

            .featured-grid {
                grid-template-columns: 1fr;
            }

            .books-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .steps-grid {
                grid-template-columns: 1fr;
            }

            .how-section {
                padding: 60px 20px;
            }


            .trust-grid {
                grid-template-columns: 1fr;
            }

            .trust-section {
                padding: 48px 20px;
            }

            .trust-commitment {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }

            .support-grid {
                grid-template-columns: 1fr;
            }

            .support-section {
                padding: 60px 20px;
            }
        }

        @media (max-width: 500px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }

            .modal {
                padding: 28px 20px;
            }

            .hero h1 {
                letter-spacing: -1px;
            }

            .hero h1 em {
                margin-top: 12px;
            }

            .hero {
                padding: 90px 20px 70px;
            }

            .hero-tag {
                margin-bottom: 40px;
                font-size: 9px;
            }

            .hero-sub {
                font-size: 11px;
                letter-spacing: 1px;
            }

            .hero-stats {
                gap: 32px;
                margin-top: 56px;
                padding-top: 28px;
            }
        }

        /* ========== ORDER FORM (form xác nhận thanh toán) ========== */
        .order-form-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.88);
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 1500;
            padding: 16px;
            backdrop-filter: blur(8px);
            overflow: hidden;
        }

        .order-form-overlay.active {
            display: flex;
        }

        .order-form {
            background: #141414;
            border: 1px solid rgba(255, 255, 255, 0.09);
            width: 100%;
            max-width: 480px;
            padding: 24px 28px 20px;
            position: relative;
            overflow: hidden;
            animation: fadeUp 0.3s ease both;
            --bg-url: none;
        }

        /* Ảnh bìa sách làm nền — DEEPER */
        .order-form::before {
            content: '';
            position: absolute;
            inset: -15%;
            background-image: var(--bg-url);
            background-size: cover;
            background-position: center top;
            filter: blur(14px) brightness(0.45);
            z-index: 0;
            pointer-events: none;
        }

        /* Lớp gradient tối đậm hơn */
        .order-form::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(0, 0, 0, 0.20), rgba(0, 0, 0, 0.70), rgba(0, 0, 0, 0.95));
            z-index: 0;
            pointer-events: none;
        }

        .order-form>* {
            position: relative;
            z-index: 1;
        }

        .order-form-close {
            position: absolute;
            top: 12px;
            right: 16px;
            background: none;
            border: none;
            color: var(--muted);
            font-size: 22px;
            cursor: pointer;
            line-height: 1;
            transition: color 0.2s;
        }

        .order-form-close:hover {
            color: var(--text);
        }

        .order-form h3 {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 6px;
            color: var(--text);
        }

        .order-form .form-subtitle {
            font-size: 12px;
            color: var(--muted);
            margin-bottom: 12px;
            line-height: 1.6;
            border-bottom: 1px solid var(--border);
            padding-bottom: 12px;
        }

        /* Bank + QR nằm ngang */
        .order-form .form-bank {
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--bg3);
            border: 1px solid rgba(201, 168, 76, 0.2);
            padding: 10px 14px;
            margin-bottom: 14px;
        }

        .order-form .form-bank-info {
            flex: 1;
            min-width: 0;
        }

        .order-form .form-bank-info .bank-name {
            font-size: 12px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 2px;
        }

        .order-form .form-bank-info .bank-owner {
            font-size: 11px;
            color: var(--muted);
        }

        .order-form .form-bank-stk {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 17px;
            font-weight: 900;
            color: var(--gold);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }

        .order-form .form-bank-qr img {
            width: 122px;
            height: 122px;
            object-fit: cover;
            border: 1px solid rgba(255, 255, 255, 0.08);
            display: block;
            flex-shrink: 0;
        }

        /* Book + price: 1 hàng */
        .order-form .form-row {
            display: flex;
            gap: 8px;
            margin-bottom: 0;
        }

        .order-form .form-row .form-col {
            flex: 1;
            min-width: 0;
        }

        .order-form label {
            display: block;
            font-size: 10px;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--muted);
            margin-bottom: 4px;
        }

        .order-form input[type="email"],
        .order-form input[type="text"] {
            width: 100%;
            margin-bottom: 12px;
            padding: 9px 12px;
            background: #0a0a0a;
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text);
            font-family: 'Be Vietnam Pro', sans-serif;
            font-size: 13px;
            letter-spacing: 0.3px;
            outline: none;
            transition: border-color 0.2s;
        }

        .order-form input[type="email"]:focus,
        .order-form input[type="text"]:focus {
            border-color: rgba(192, 57, 43, 0.6);
        }

        .order-form input[readonly] {
            color: var(--gold);
            opacity: 0.85;
            cursor: default;
        }

        /* Textarea ghi chú */
        .order-form textarea {
            width: 100%;
            margin-bottom: 4px;
            padding: 10px 12px;
            background: #0a0a0a;
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text);
            font-family: 'Be Vietnam Pro', sans-serif;
            font-size: 13px;
            line-height: 1.5;
            letter-spacing: 0.3px;
            outline: none;
            transition: border-color 0.2s;
            resize: vertical;
            min-height: 70px;
            max-height: 160px;
            box-sizing: border-box;
        }

        .order-form textarea::placeholder {
            color: rgba(217, 210, 191, 0.35);
            font-style: italic;
        }

        .order-form textarea:focus {
            border-color: rgba(8, 126, 139, 0.6);
        }

        .order-form .label-optional {
            color: rgba(191, 215, 234, 0.45);
            font-weight: 400;
            font-size: 11px;
            letter-spacing: 0.3px;
            margin-left: 4px;
            text-transform: none;
        }

        .order-form .note-counter {
            font-size: 10px;
            color: rgba(191, 215, 234, 0.35);
            text-align: right;
            margin: 0 0 12px 0;
            letter-spacing: 0.3px;
        }

        /* File upload */
        .order-form .file-wrap {
            margin-bottom: 14px;
        }

        .order-form .file-label {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 9px 12px;
            background: #0a0a0a;
            border: 1px dashed rgba(255, 255, 255, 0.15);
            cursor: pointer;
            transition: border-color 0.2s;
        }

        .order-form .file-label:hover {
            border-color: rgba(192, 57, 43, 0.5);
        }

        .order-form .file-label svg {
            flex-shrink: 0;
        }

        .order-form .file-label span {
            font-size: 12px;
            color: var(--muted);
        }

        .order-form input[type="file"] {
            display: none;
        }

        /* Submit */
        .order-form .btn-submit {
            width: 100%;
            background: linear-gradient(135deg, #c0392b, #e74c3c);
            color: #fff;
            border: none;
            padding: 13px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            cursor: pointer;
            font-family: 'Be Vietnam Pro', sans-serif;
            transition: all 0.2s;
            box-shadow: 0 4px 18px rgba(192, 57, 43, 0.35);
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            min-height: 44px;
        }

        .order-form .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(192, 57, 43, 0.5);
        }

        .order-form .btn-submit:disabled {
            opacity: 0.75;
            cursor: wait;
            transform: none;
        }

        /* Loading spinner trong submit button */
        .btn-submit .btn-spinner {
            display: none;
            width: 16px;
            height: 16px;
            border: 2px solid rgba(255, 255, 255, 0.25);
            border-top-color: #fff;
            border-radius: 50%;
            animation: btnSpin 0.7s linear infinite;
        }

        .btn-submit.loading .btn-spinner {
            display: inline-block;
        }

        .btn-submit.loading .btn-text-default {
            display: none;
        }

        .btn-submit:not(.loading) .btn-text-loading {
            display: none;
        }

        @keyframes btnSpin {
            to {
                transform: rotate(360deg);
            }
        }

        .order-form .form-note {
            font-size: 11px;
            color: rgba(136, 136, 136, 0.6);
            text-align: center;
            margin-top: 8px;
            line-height: 1.6;
        }

        /* Success */
        .order-form .form-success {
            text-align: center;
            padding: 16px 0;
        }

        .order-form .form-success h4 {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
            font-size: 18px;
            color: var(--text);
            margin-bottom: 8px;
        }

        .order-form .form-success p {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.8;
        }

        @media (max-width: 500px) {
            .order-form {
                padding: 20px 16px 16px;
            }

            .order-form .form-bank-qr img {
                width: 101px;
                height: 101px;
            }

            .order-form .form-bank-stk {
                font-size: 15px;
            }
        }

        /* === Zalo Floating Support Button === */
        .zalo-float {
            position: fixed;
            bottom: 24px;
            right: 24px;
            z-index: 9999;
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            font-family: inherit;
        }

        .zalo-float-btn {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: #0068ff;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 6px 20px rgba(0, 104, 255, 0.45),
                0 0 0 0 rgba(0, 104, 255, 0.55);
            animation: zaloPulse 2s infinite;
            transition: transform 0.25s ease;
            position: relative;
        }

        .zalo-float-btn:hover {
            transform: scale(1.08);
        }

        .zalo-float-btn svg {
            width: 34px;
            height: 34px;
        }

        .zalo-float-label {
            background: #fff;
            color: #1a1a1a;
            padding: 8px 14px;
            border-radius: 24px;
            font-size: 13px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
            white-space: nowrap;
            border: 1px solid rgba(0, 0, 0, 0.05);
        }

        .zalo-float-label strong {
            color: #0068ff;
        }

        @keyframes zaloPulse {
            0% {
                box-shadow: 0 6px 20px rgba(0, 104, 255, 0.45), 0 0 0 0 rgba(0, 104, 255, 0.55);
            }

            70% {
                box-shadow: 0 6px 20px rgba(0, 104, 255, 0.45), 0 0 0 16px rgba(0, 104, 255, 0);
            }

            100% {
                box-shadow: 0 6px 20px rgba(0, 104, 255, 0.45), 0 0 0 0 rgba(0, 104, 255, 0);
            }
        }

        @media (max-width: 600px) {
            .zalo-float {
                bottom: 16px;
                right: 16px;
            }

            .zalo-float-btn {
                width: 54px;
                height: 54px;
            }

            .zalo-float-btn svg {
                width: 30px;
                height: 30px;
            }

            .zalo-float-label {
                display: none;
            }
        }

        /* ========== MODERN SANS-SERIF HEADING OVERRIDE ========== */
        /* Tăng độ đậm + siết khoảng cách ký tự cho giống mẫu tham khảo */
        h1,
        h2,
        h3,
        h4,
        .hero-content h1,
        .section-title,
        .section-heading,
        .detail-hero h2 {
            font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif !important;
            font-weight: 800 !important;
            letter-spacing: -0.02em !important;
        }

        .hero-content h1 {
            font-weight: 900 !important;
            letter-spacing: -0.03em !important;
            text-transform: uppercase !important;
        }

        .hero-content h1 em {
            font-style: normal !important;
            font-weight: 900 !important;
        }

        /* Bỏ italic đặc trưng của serif cũ cho các tiêu đề dùng <em> */
        h1 em,
        h2 em,
        h3 em,
        h4 em,
        .section-title em,
        .section-heading em {
            font-style: normal !important;
            font-weight: 800 !important;
        }

        /* ========== ELITE 0.1% — CLASSIFIED DOSSIER OVERRIDE ========== */
        /* Tinh hoa · quyền lực ngầm · hồ sơ tuyệt mật */

        /* Hero title — tông vàng ngà cổ điển, không trắng lòe */
        .hero-content h1 {
            color: var(--ivory) !important;
            text-shadow:
                0 0 40px rgba(212, 175, 55, 0.08),
                0 2px 20px rgba(0, 0, 0, 0.6) !important;
        }

        /* Điểm nhấn <em> trong hero: ánh vàng thật, không đỏ chu */
        .hero-content h1 em {
            background: linear-gradient(180deg, var(--gold3) 0%, var(--gold2) 50%, var(--gold) 100%) !important;
            -webkit-background-clip: text !important;
            background-clip: text !important;
            -webkit-text-fill-color: transparent !important;
            color: transparent !important;
        }

        /* Kicker "Tài liệu nội bộ · Không đại trà" — khắc tông bạch kim */
        .hero-kicker {
            color: var(--platinum) !important;
            letter-spacing: 0.3em !important;
            text-transform: uppercase !important;
            font-size: 11px !important;
            font-weight: 500 !important;
            border: 1px solid var(--border2) !important;
            padding: 8px 18px !important;
            border-radius: 0 !important;
            background: linear-gradient(180deg,
                    rgba(184, 148, 95, 0.08) 0%,
                    rgba(184, 148, 95, 0.02) 100%) !important;
            backdrop-filter: blur(10px) !important;
        }

        /* Nút chính — như huy hiệu vàng cổ, không đỏ */
        .hero-btn-primary,
        .btn-primary,
        button.primary,
        a.primary {
            background: linear-gradient(180deg, var(--gold2) 0%, var(--gold) 100%) !important;
            color: #1a1408 !important;
            border: 1px solid var(--gold2) !important;
            font-weight: 700 !important;
            letter-spacing: 0.15em !important;
            text-transform: uppercase !important;
            box-shadow:
                0 0 0 1px rgba(212, 175, 55, 0.2),
                0 8px 28px rgba(212, 175, 55, 0.15),
                inset 0 1px 0 rgba(255, 255, 255, 0.25) !important;
            transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1) !important;
        }

        .hero-btn-primary:hover,
        .btn-primary:hover {
            background: linear-gradient(180deg, var(--gold3) 0%, var(--gold2) 100%) !important;
            box-shadow:
                0 0 0 1px var(--gold2),
                0 12px 40px rgba(212, 175, 55, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.35) !important;
            transform: translateY(-1px) !important;
        }

        /* Nút ghost — outline bạch kim mảnh, cảm giác tối mật */
        .hero-btn-ghost,
        .btn-ghost {
            background: transparent !important;
            color: var(--platinum) !important;
            border: 1px solid var(--border2) !important;
            font-weight: 500 !important;
            letter-spacing: 0.15em !important;
            text-transform: uppercase !important;
            transition: all 0.35s ease !important;
        }

        .hero-btn-ghost:hover,
        .btn-ghost:hover {
            border-color: var(--gold) !important;
            color: var(--gold3) !important;
            background: rgba(184, 148, 95, 0.05) !important;
        }

        /* Announcement bar — không còn đỏ rực, chuyển Bordeaux + vàng */
        .announcement-bar {
            background: linear-gradient(90deg,
                    #0a0806 0%,
                    #1a0f0c 50%,
                    #0a0806 100%) !important;
            border-top: 1px solid rgba(184, 148, 95, 0.2) !important;
            border-bottom: 1px solid rgba(184, 148, 95, 0.35) !important;
        }

        .announcement-bar::after {
            background: radial-gradient(ellipse 70% 100% at 50% 50%,
                    rgba(212, 175, 55, 0.12) 0%,
                    transparent 70%) !important;
        }

        .announcement-bar::before {
            background: linear-gradient(90deg,
                    transparent,
                    rgba(212, 175, 55, 0.18),
                    transparent) !important;
        }

        .bar-main,
        .bar-end {
            color: var(--gold3) !important;
            letter-spacing: 0.2em !important;
        }

        .bar-sep {
            color: var(--gold) !important;
        }

        /* Section titles — nhấn vàng antique */
        .section-title em,
        .section-heading em,
        h2 em,
        h3 em {
            color: var(--gold2) !important;
        }

        /* Tất cả link và accent màu đỏ cũ → đỏ Bordeaux quý tộc */
        a[style*="color: #e74c3c"],
        a[style*="color: #c0392b"] {
            color: var(--gold2) !important;
        }

        /* Border lines tinh xảo hơn */
        hr,
        .divider {
            border-color: var(--border2) !important;
            background: linear-gradient(90deg,
                    transparent,
                    var(--gold),
                    transparent) !important;
        }

        /* Text muted — ám vàng, không xám lạnh */
        .muted,
        [class*="sub"],
        p.hero-sub-text {
            color: rgba(217, 210, 191, 0.7) !important;
        }

        /* Scrollbar tinh hoa */
        ::-webkit-scrollbar {
            width: 8px;
        }

        ::-webkit-scrollbar-track {
            background: #0a0806;
        }

        ::-webkit-scrollbar-thumb {
            background: linear-gradient(180deg, var(--gold) 0%, var(--red) 100%);
            border-radius: 0;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--gold2);
        }

        /* Selection — vàng cổ trên nền đen */
        ::selection {
            background: var(--gold);
            color: #0a0806;
        }

        /* ========== MOBILE-FIRST ADJUSTMENTS ========== */

        /* Số tài khoản — đổi sang trắng sáng, chặn iOS auto-link màu xanh */
        .step-bank-stk,
        .form-bank-stk span,
        .form-bank-stk a {
            color: #ffffff !important;
            -webkit-text-fill-color: #ffffff !important;
            text-decoration: none !important;
            pointer-events: none !important;
        }

        /* Chặn triệt để iOS biến dãy số thành link xanh */
        a[href^="tel:"],
        a[x-apple-data-detectors] {
            color: #ffffff !important;
            -webkit-text-fill-color: #ffffff !important;
            text-decoration: none !important;
            pointer-events: auto;
        }

        @media (max-width: 768px) {

            /* === HERO === */
            .hero-content h1 {
                font-size: 30px !important;
                line-height: 1.15 !important;
                letter-spacing: -0.02em !important;
            }

            .hero-content .hero-sub-text {
                font-size: 14px !important;
                line-height: 1.6 !important;
            }

            /* === SECTION TITLES === */
            .section-title,
            h2.section-title {
                font-size: 26px !important;
                line-height: 1.2 !important;
            }

            .section-label {
                font-size: 11px !important;
                letter-spacing: 0.2em !important;
            }

            /* === PREMIUM GRID — 2 cột trên mobile === */
            .featured-grid {
                grid-template-columns: repeat(2, 1fr) !important;
                gap: 10px !important;
            }

            /* === DONATE GRID — 2 cột trên mobile === */
            .books-grid {
                grid-template-columns: repeat(2, 1fr) !important;
                gap: 10px !important;
            }

            /* === CARD — đồng nhất thu gọn === */
            .featured-card .card-body,
            .book-card .card-body,
            .book-card .info {
                padding: 14px 12px !important;
            }

            .featured-card h3,
            .book-card h3,
            .book-card h4 {
                font-size: 15px !important;
                line-height: 1.25 !important;
                letter-spacing: -0.01em !important;
                margin-bottom: 6px !important;
            }

            .featured-card .desc,
            .book-card .desc,
            .featured-card .pain-tag,
            .book-card .pain-tag,
            .book-card .card-pain {
                font-size: 12px !important;
                line-height: 1.45 !important;
                margin-bottom: 8px !important;
            }

            .featured-card .benefit-line,
            .book-card .benefit-line,
            .book-card .card-benefit {
                font-size: 11.5px !important;
                line-height: 1.5 !important;
                padding: 10px !important;
                margin: 8px 0 !important;
            }

            .featured-card .scarcity-text,
            .book-card .scarcity-text {
                font-size: 10.5px !important;
                letter-spacing: 0.08em !important;
                line-height: 1.4 !important;
                margin: 8px 0 !important;
            }

            /* === DONATE — label, range, suggest === */
            .donate-label {
                font-size: 9px !important;
                letter-spacing: 1.5px !important;
            }

            .donate-range {
                font-size: 15px !important;
                white-space: nowrap !important;
                letter-spacing: -0.02em !important;
            }

            .donate-self {
                font-size: 9px !important;
                padding: 2px 6px !important;
                margin-left: 4px !important;
            }

            .donate-suggest {
                font-size: 11px !important;
                line-height: 1.45 !important;
                margin: 6px 0 !important;
            }

            .donate-suggest strong {
                font-size: 12px !important;
            }

            .btn-donate {
                font-size: 12px !important;
                padding: 11px 8px !important;
                letter-spacing: 0.06em !important;
                line-height: 1.2 !important;
            }

            .donate-hint {
                font-size: 10.5px !important;
                margin: 6px 0 !important;
            }

            .btn-preview {
                font-size: 11px !important;
                padding: 9px 8px !important;
            }

            /* === FILTER TABS === */
            .filter-tabs {
                flex-wrap: wrap !important;
                gap: 6px !important;
            }

            .filter-tab {
                font-size: 11px !important;
                padding: 8px 10px !important;
            }

            .tab-count {
                font-size: 9px !important;
                padding: 1px 5px !important;
            }

            /* === BESTSELLER BADGE === */
            .bestseller-badge {
                font-size: 9px !important;
                padding: 4px 7px !important;
            }

            /* === BUNDLE CARD === */
            .bundle-card {
                padding: 22px 16px !important;
            }

            .bundle-card h3 {
                font-size: 18px !important;
                line-height: 1.3 !important;
            }

            .bundle-label {
                font-size: 10px !important;
                letter-spacing: 1.5px !important;
            }

            .bundle-desc {
                font-size: 13px !important;
                line-height: 1.55 !important;
            }

            .bundle-perks span {
                font-size: 11px !important;
                padding: 5px 9px !important;
            }

            .bundle-price-old {
                font-size: 15px !important;
                white-space: nowrap !important;
            }

            .bundle-price-new {
                font-size: 30px !important;
                white-space: nowrap !important;
                letter-spacing: -0.02em !important;
            }

            .bundle-price-save {
                font-size: 11px !important;
            }

            .bundle-btn {
                font-size: 13px !important;
                padding: 12px !important;
            }

            .bundle-ribbon {
                font-size: 10px !important;
                padding: 4px 10px !important;
            }

            /* === PRICE — FIX vỡ dòng "4.000.00 đ" === */
            .price-main,
            .price-box .price-main {
                font-size: 24px !important;
                line-height: 1.1 !important;
                white-space: nowrap !important;
                letter-spacing: -0.02em !important;
            }

            .price-label,
            .price-box .price-label {
                font-size: 9.5px !important;
                letter-spacing: 0.1em !important;
            }

            /* === BUTTONS trong card === */
            .btn-buy {
                font-size: 12px !important;
                padding: 11px 8px !important;
                letter-spacing: 0.06em !important;
                line-height: 1.2 !important;
            }

            .btn-learn {
                font-size: 11px !important;
                padding: 9px 8px !important;
                line-height: 1.2 !important;
            }

            .cta-hint {
                font-size: 10.5px !important;
                line-height: 1.4 !important;
                margin: 6px 0 !important;
            }

            /* === BADGES (New, Access 0.1%) — nhỏ lại cho vừa ảnh === */
            .new-badge,
            .scarcity-badge {
                font-size: 9px !important;
                padding: 4px 8px !important;
                letter-spacing: 0.08em !important;
            }

            /* === IMAGE wrap === */
            .book-img-wrap {
                border-radius: 4px !important;
            }

            /* === Số tài khoản mobile === */
            .step-bank-stk {
                font-size: 19px !important;
                color: #ffffff !important;
                -webkit-text-fill-color: #ffffff !important;
                word-break: break-all;
            }
        }

        /* === MOBILE NHỎ (≤ 420px) — điều chỉnh thêm === */
        @media (max-width: 420px) {
            .hero-content h1 {
                font-size: 26px !important;
            }

            .section-title,
            h2.section-title {
                font-size: 22px !important;
            }

            .featured-card h3,
            .book-card h3,
            .book-card h4 {
                font-size: 13.5px !important;
            }

            .featured-card .desc,
            .book-card .desc,
            .featured-card .pain-tag,
            .book-card .pain-tag,
            .book-card .card-pain {
                font-size: 11px !important;
            }

            .featured-card .benefit-line,
            .book-card .benefit-line,
            .book-card .card-benefit {
                font-size: 10.5px !important;
                padding: 8px !important;
            }

            .featured-card .scarcity-text,
            .book-card .scarcity-text {
                font-size: 9.5px !important;
            }

            .price-main,
            .price-box .price-main {
                font-size: 20px !important;
            }

            .btn-buy,
            .btn-donate {
                font-size: 11px !important;
                padding: 10px 6px !important;
            }

            .donate-range {
                font-size: 13px !important;
            }

            .donate-suggest {
                font-size: 10px !important;
            }

            .btn-preview {
                font-size: 10px !important;
            }

            .featured-grid,
            .books-grid {
                gap: 8px !important;
            }

            .featured-card .card-body,
            .book-card .card-body,
            .book-card .info {
                padding: 12px 10px !important;
            }

            .bundle-price-new {
                font-size: 26px !important;
            }

            .new-badge,
            .scarcity-badge,
            .bestseller-badge {
                font-size: 8.5px !important;
                padding: 3px 6px !important;
            }
        }

        /* ========== MOBILE TEXT DECLUTTER — ẨN DÒNG PHỤ ========== */
        /* Giữ lại duy nhất 1 dòng mạnh nhất (benefit-line) cho mỗi card */
        /* Desktop vẫn hiển thị đầy đủ */
        @media (max-width: 768px) {

            /* Featured Premium cards: ẩn desc + scarcity-text */
            .featured-card .desc,
            .featured-card .scarcity-text {
                display: none !important;
            }

            /* Donate cards: ẩn desc + donate-suggest (dòng "Đa số chọn...") */
            .book-card .desc,
            .book-card .donate-suggest,
            .book-card .scarcity-text {
                display: none !important;
            }

            /* Badge nhỏ thêm 1 bậc cho gọn */
            .new-badge,
            .scarcity-badge,
            .bestseller-badge {
                font-size: 8px !important;
                padding: 3px 6px !important;
                letter-spacing: 0.05em !important;
            }

            /* Giá nhỏ thêm 1 bậc cho cân đối */
            .price-main,
            .price-box .price-main {
                font-size: 20px !important;
                line-height: 1.1 !important;
            }

            .price-main::after {
                font-size: 8.5px !important;
                margin-top: 3px !important;
            }

            .donate-range {
                font-size: 14px !important;
            }

            /* Pain-tag và benefit giãn cách rõ ràng hơn khi đứng cạnh nhau */
            .featured-card .pain-tag,
            .book-card .card-pain {
                margin-bottom: 10px !important;
            }

            .featured-card .benefit-line,
            .book-card .card-benefit {
                margin-top: 0 !important;
                margin-bottom: 12px !important;
            }
        }

        /* iPhone nhỏ — giá & badge nhỏ nữa */
        @media (max-width: 420px) {

            .new-badge,
            .scarcity-badge,
            .bestseller-badge {
                font-size: 7.5px !important;
                padding: 2.5px 5px !important;
            }

            .price-main,
            .price-box .price-main {
                font-size: 17px !important;
            }

            .donate-range {
                font-size: 12px !important;
            }
        }

        /* ========== CARD UNIFICATION — 1 KHỐI LIỀN MẠCH ========== */
        /* Vấn đề trước: border-top ở card-body + price-box tạo cảm giác card bị tách 3 tầng.
           Giải pháp: bỏ border-top nội bộ, dùng margin-top thay, viền ngoài duy nhất. */

        /* Toàn bộ card là 1 khối — viền ngoài tinh tế, không chia ô */
        .featured-card {
            background: var(--bg2) !important;
            border: 1px solid var(--border) !important;
            border-radius: 2px !important;
            overflow: hidden !important;
        }

        .book-card {
            background: var(--bg2) !important;
            border: 1px solid var(--border) !important;
            border-radius: 2px !important;
            overflow: hidden !important;
        }

        /* Bỏ border-top ở card-body (đang tạo đường cắt giữa ảnh và nội dung) */
        .featured-card .card-body {
            border-top: none !important;
        }

        /* Bỏ border-top ở price-box — thay bằng đường mảnh ánh vàng tinh tế
           hoặc tắt hẳn cho cảm giác liền */
        .price-box {
            border-top: 1px solid rgba(184, 148, 95, 0.08) !important;
            margin-top: 14px !important;
            padding-top: 16px !important;
        }

        /* Grid không dùng gap có background — cho card rời nhau bằng khoảng trắng thuần */
        .featured-grid {
            background: transparent !important;
            border: none !important;
            gap: 16px !important;
        }

        .books-grid {
            background: transparent !important;
            border: none !important;
            gap: 16px !important;
        }

        /* Hover — toàn card sáng lên như 1 khối, không chia đoạn */
        .featured-card:hover,
        .book-card:hover {
            border-color: rgba(184, 148, 95, 0.3) !important;
            box-shadow:
                0 0 0 1px rgba(184, 148, 95, 0.1),
                0 20px 60px rgba(0, 0, 0, 0.5) !important;
        }

        /* Mobile — cảm giác liền mạch càng cần rõ */
        @media (max-width: 768px) {

            .featured-grid,
            .books-grid {
                gap: 20px !important;
                row-gap: 24px !important;
            }

            .price-box {
                margin-top: 10px !important;
                padding-top: 12px !important;
                border-top: 1px solid rgba(184, 148, 95, 0.06) !important;
            }

            /* Card body + price box cùng padding để nhìn như 1 khối thở đều */
            .featured-card .card-body,
            .book-card .info {
                padding: 14px 12px 16px !important;
            }

            /* Bỏ mọi đường cắt thừa trong card */
            .featured-card,
            .book-card {
                border: 1px solid rgba(184, 148, 95, 0.1) !important;
            }
        }

        @media (max-width: 420px) {

            .featured-grid,
            .books-grid {
                gap: 16px !important;
                row-gap: 20px !important;
            }

            .featured-card .card-body,
            .book-card .info {
                padding: 12px 10px 14px !important;
            }
        }

        /* ========== EDITORIAL PALETTE — FINAL COLOR MAPPING ========== */
        /* Áp lại đúng tinh thần bảng màu: navy + teal + coral + crimson */

        /* === Logo "ĐAO" trong header === */
        .logo-text em {
            color: var(--coral) !important;
        }

        /* === Announcement bar — navy đậm + gạch teal === */
        .announcement-bar {
            background: linear-gradient(90deg, #081622 0%, var(--navy) 50%, #081622 100%) !important;
            border-top: 1px solid rgba(8, 126, 139, 0.3) !important;
            border-bottom: 1px solid rgba(255, 90, 95, 0.3) !important;
        }

        .announcement-bar::after {
            background: radial-gradient(ellipse 70% 100% at 50% 50%,
                    rgba(8, 126, 139, 0.25) 0%, transparent 70%) !important;
        }

        .announcement-bar::before {
            background: linear-gradient(90deg,
                    transparent, rgba(255, 90, 95, 0.22), transparent) !important;
        }

        .bar-main {
            color: #ffffff !important;
            letter-spacing: 0.2em !important;
        }

        .bar-end {
            color: var(--pastel) !important;
            letter-spacing: 0.2em !important;
        }

        .bar-sep {
            color: var(--coral) !important;
        }

        /* === Hero — title giữ trắng, điểm nhấn <em> chuyển coral-gradient === */
        .hero-content h1 {
            color: #ffffff !important;
            text-shadow:
                0 0 40px rgba(255, 90, 95, 0.12),
                0 2px 20px rgba(0, 0, 0, 0.6) !important;
        }

        .hero-content h1 em {
            background: linear-gradient(180deg, var(--coral) 0%, var(--crimson) 100%) !important;
            -webkit-background-clip: text !important;
            background-clip: text !important;
            -webkit-text-fill-color: transparent !important;
            color: transparent !important;
        }

        /* === Hero kicker (Tài liệu nội bộ · Không đại trà) === */
        .hero-kicker {
            color: var(--pastel) !important;
            border: 1px solid rgba(8, 126, 139, 0.4) !important;
            background: linear-gradient(180deg,
                    rgba(11, 57, 84, 0.3) 0%,
                    rgba(11, 57, 84, 0.1) 100%) !important;
        }

        /* === Hero CTA chính — coral/crimson mạnh mẽ === */
        .hero-btn-primary {
            background: linear-gradient(180deg, var(--coral) 0%, var(--crimson) 100%) !important;
            color: #ffffff !important;
            border: 1px solid var(--coral) !important;
            text-transform: uppercase !important;
            letter-spacing: 0.15em !important;
            font-weight: 700 !important;
            box-shadow:
                0 0 0 1px rgba(255, 90, 95, 0.25),
                0 8px 28px rgba(200, 29, 37, 0.25),
                inset 0 1px 0 rgba(255, 255, 255, 0.2) !important;
        }

        .hero-btn-primary:hover {
            background: linear-gradient(180deg, var(--coral-soft) 0%, var(--coral) 100%) !important;
            box-shadow:
                0 0 0 1px var(--coral),
                0 12px 40px rgba(255, 90, 95, 0.45) !important;
            transform: translateY(-1px) !important;
        }

        /* === Hero ghost button — viền teal === */
        .hero-btn-ghost {
            background: transparent !important;
            color: var(--pastel) !important;
            border: 1px solid rgba(8, 126, 139, 0.5) !important;
            text-transform: uppercase !important;
            letter-spacing: 0.15em !important;
        }

        .hero-btn-ghost:hover {
            border-color: var(--teal) !important;
            color: #ffffff !important;
            background: rgba(8, 126, 139, 0.12) !important;
        }

        /* === Section label + section title === */
        .section-label {
            color: var(--coral) !important;
            letter-spacing: 0.3em !important;
        }

        .section-title em,
        .section-heading em,
        h2 em,
        h3 em {
            color: var(--coral) !important;
            background: none !important;
            -webkit-text-fill-color: var(--coral) !important;
        }

        /* === BADGES === */
        .new-badge {
            background: var(--crimson) !important;
            color: #ffffff !important;
            border: none !important;
        }

        .scarcity-badge {
            background: rgba(11, 57, 84, 0.8) !important;
            border: 1px solid rgba(8, 126, 139, 0.5) !important;
            color: var(--pastel) !important;
            backdrop-filter: blur(4px) !important;
        }

        .bestseller-badge {
            background: var(--coral) !important;
            color: #ffffff !important;
        }

        /* === CARD === */
        .featured-card,
        .book-card {
            background: var(--bg2) !important;
            border: 1px solid rgba(191, 215, 234, 0.08) !important;
        }

        .featured-card:hover,
        .book-card:hover {
            border-color: rgba(8, 126, 139, 0.4) !important;
            box-shadow:
                0 0 0 1px rgba(8, 126, 139, 0.15),
                0 20px 60px rgba(0, 0, 0, 0.6) !important;
        }

        .pain-tag,
        .card-pain {
            color: var(--coral) !important;
        }

        .featured-card h3,
        .book-card h3,
        .book-card h4 {
            color: #ffffff !important;
        }

        .benefit-line,
        .card-benefit {
            background: rgba(11, 57, 84, 0.25) !important;
            border-left: 2px solid var(--teal) !important;
            color: var(--pastel) !important;
        }

        .scarcity-text {
            color: rgba(191, 215, 234, 0.6) !important;
        }

        /* === PRICE === */
        .price-box {
            border-top: 1px solid rgba(191, 215, 234, 0.08) !important;
        }

        .price-main {
            color: #ffffff !important;
            background: none !important;
            -webkit-text-fill-color: #ffffff !important;
        }

        .price-main::after {
            color: rgba(191, 215, 234, 0.55) !important;
        }

        /* === MAIN CTA "SỞ HỮU NGAY" — crimson mạnh === */
        .btn-buy,
        .btn-donate {
            background: linear-gradient(180deg, var(--coral) 0%, var(--crimson) 100%) !important;
            color: #ffffff !important;
            border: 1px solid var(--coral) !important;
            box-shadow:
                0 0 0 1px rgba(255, 90, 95, 0.2),
                0 6px 24px rgba(200, 29, 37, 0.22) !important;
        }

        .btn-buy:hover,
        .btn-donate:hover {
            background: linear-gradient(180deg, var(--coral-soft) 0%, var(--coral) 100%) !important;
            box-shadow:
                0 0 0 1px var(--coral),
                0 10px 36px rgba(255, 90, 95, 0.4) !important;
            transform: translateY(-1px) !important;
        }

        .cta-hint,
        .donate-hint {
            color: rgba(191, 215, 234, 0.5) !important;
        }

        /* === Learn more / Preview — ghost button === */
        .btn-learn,
        .btn-preview {
            background: transparent !important;
            color: var(--pastel) !important;
            border: 1px solid rgba(191, 215, 234, 0.15) !important;
        }

        .btn-learn:hover,
        .btn-preview:hover {
            border-color: var(--teal) !important;
            color: #ffffff !important;
            background: rgba(8, 126, 139, 0.08) !important;
        }

        /* === DONATE specific === */
        .donate-label {
            color: var(--pastel) !important;
            opacity: 0.7 !important;
        }

        .donate-range {
            color: #ffffff !important;
        }

        .donate-self {
            background: rgba(255, 90, 95, 0.15) !important;
            color: var(--coral) !important;
            border: 1px solid rgba(255, 90, 95, 0.3) !important;
        }

        .donate-suggest {
            color: rgba(191, 215, 234, 0.7) !important;
        }

        .donate-suggest strong {
            color: var(--coral) !important;
        }

        /* === FILTER TABS === */
        .filter-tab {
            background: transparent !important;
            color: var(--pastel) !important;
            border: 1px solid rgba(191, 215, 234, 0.12) !important;
        }

        .filter-tab.active,
        .filter-tab[aria-selected="true"] {
            background: var(--navy) !important;
            color: #ffffff !important;
            border-color: var(--teal) !important;
        }

        .filter-tab:hover {
            border-color: var(--teal) !important;
        }

        .tab-count {
            background: rgba(8, 126, 139, 0.2) !important;
            color: var(--pastel) !important;
        }

        /* === BUNDLE === */
        .bundle-card {
            background: linear-gradient(135deg,
                    rgba(11, 57, 84, 0.4) 0%,
                    rgba(10, 20, 32, 0.6) 100%) !important;
            border: 1px solid rgba(8, 126, 139, 0.25) !important;
        }

        .bundle-ribbon {
            background: var(--crimson) !important;
            color: #ffffff !important;
        }

        .bundle-label {
            color: var(--coral) !important;
        }

        .bundle-card h3 em {
            color: var(--coral) !important;
            background: none !important;
            -webkit-text-fill-color: var(--coral) !important;
        }

        .bundle-desc strong {
            color: var(--pastel) !important;
        }

        .bundle-perks span {
            background: rgba(11, 57, 84, 0.5) !important;
            border: 1px solid rgba(8, 126, 139, 0.3) !important;
            color: var(--pastel) !important;
        }

        .bundle-price-old {
            color: var(--muted) !important;
            text-decoration: line-through !important;
        }

        .bundle-price-new {
            color: #ffffff !important;
        }

        .bundle-price-save {
            color: var(--coral) !important;
        }

        .bundle-btn {
            background: linear-gradient(180deg, var(--coral) 0%, var(--crimson) 100%) !important;
            color: #ffffff !important;
            border: 1px solid var(--coral) !important;
            box-shadow: 0 6px 24px rgba(200, 29, 37, 0.3) !important;
        }

        /* === STEPS (01, 02, 03) — số navy+coral === */
        .step-num,
        .step-number {
            color: var(--coral) !important;
            -webkit-text-fill-color: var(--coral) !important;
            background: none !important;
        }

        /* Bank box */
        .step-bank,
        .form-bank-stk {
            background: rgba(11, 57, 84, 0.25) !important;
            border: 1px solid rgba(8, 126, 139, 0.2) !important;
        }

        .step-bank-label,
        .form-bank-label {
            color: var(--pastel) !important;
        }

        /* === HEADER NAV === */
        nav#mainNav a:hover,
        nav a:hover {
            color: var(--coral) !important;
        }

        /* === SCROLLBAR === */
        ::-webkit-scrollbar-track {
            background: #050505 !important;
        }

        ::-webkit-scrollbar-thumb {
            background: linear-gradient(180deg, var(--teal) 0%, var(--navy) 100%) !important;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--coral) !important;
        }

        /* === Selection === */
        ::selection {
            background: var(--coral) !important;
            color: #ffffff !important;
        }

        /* === Hide on mobile — giữ nguyên tinh thần text declutter === */
        /* Override các màu đã có trong mobile declutter block để dùng palette mới */
        @media (max-width: 768px) {

            .pain-tag,
            .card-pain {
                color: var(--coral) !important;
            }
        }

        /* === Link chung trong body === */
        a {
            color: var(--teal2);
        }

        a:hover {
            color: var(--coral);
        }

        /* ========== NAV MENU — EDITORIAL PALETTE OVERRIDE ========== */
        /* Đổi nav drawer từ tông đỏ-vàng cũ sang navy + teal + coral */
        nav#mainNav {
            background: linear-gradient(180deg, #081220 0%, #050a12 100%) !important;
            border-left: 1px solid rgba(8, 126, 139, 0.25) !important;
            box-shadow:
                -20px 0 60px rgba(0, 0, 0, 0.7),
                inset 1px 0 0 rgba(191, 215, 234, 0.04) !important;
        }

        nav#mainNav a {
            color: var(--pastel) !important;
            border-bottom: 1px solid rgba(191, 215, 234, 0.06) !important;
        }

        nav#mainNav a:hover {
            color: var(--coral) !important;
            background: rgba(8, 126, 139, 0.1) !important;
            border-bottom-color: rgba(255, 90, 95, 0.2) !important;
            padding-left: 42px !important;
        }

        /* Nút X đóng menu trong nav drawer */
        nav#mainNav .nav-close {
            position: absolute;
            top: 18px;
            right: 18px;
            width: 44px;
            height: 44px;
            background: rgba(11, 57, 84, 0.5);
            border: 1px solid rgba(8, 126, 139, 0.3);
            border-radius: 50%;
            color: var(--pastel);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0;
            transition: all 0.25s ease;
            z-index: 5;
        }

        nav#mainNav .nav-close:hover,
        nav#mainNav .nav-close:active {
            background: rgba(255, 90, 95, 0.15);
            border-color: var(--coral);
            color: var(--coral);
            transform: rotate(90deg);
        }

        /* Khi menu mở — ẩn hamburger toggle cũ vì đã có nút X tròn mới */
        .nav-toggle.active {
            opacity: 0 !important;
            pointer-events: none !important;
            visibility: hidden !important;
        }

        /* ========== HERO CTAs — 1 HÀNG TRÊN MOBILE ========== */
        @media (max-width: 768px) {
            .hero-ctas {
                display: flex !important;
                flex-wrap: nowrap !important;
                gap: 8px !important;
                justify-content: center !important;
                width: 100% !important;
                padding: 0 8px !important;
                box-sizing: border-box !important;
            }

            .hero-btn-primary,
            .hero-btn-ghost {
                flex: 1 1 0 !important;
                min-width: 0 !important;
                padding: 12px 8px !important;
                font-size: 11px !important;
                letter-spacing: 0.08em !important;
                white-space: nowrap !important;
                text-align: center !important;
                justify-content: center !important;
            }
        }

        @media (max-width: 420px) {
            .hero-ctas {
                gap: 6px !important;
            }

            .hero-btn-primary,
            .hero-btn-ghost {
                padding: 11px 6px !important;
                font-size: 10.5px !important;
                letter-spacing: 0.04em !important;
            }
        }

        /* ========== HERO REVEAL ANIMATION ========== */
        /* Hiệu ứng reveal tuần tự khi mở trang — tinh tế, editorial, không bay bay rẻ tiền */

        /* Bọc h1 để mỗi dòng là 1 block riêng có thể slide lên */
        .hero-title-anim {
            display: flex !important;
            flex-direction: column !important;
            gap: 2px !important;
        }

        .hero-line {
            display: block;
            overflow: hidden;
            line-height: 1.1;
        }

        /* Trạng thái khởi tạo — ẩn hoàn toàn, đẩy xuống 30px */
        .hero-reveal {
            opacity: 0;
            transform: translateY(30px);
            filter: blur(6px);
            animation: heroReveal 1.1s cubic-bezier(0.22, 1, 0.36, 1) forwards;
            animation-delay: var(--delay, 0s);
        }

        /* Keyframes — slide lên + fade + de-blur (như chữ khắc hiện ra qua sương) */
        @keyframes heroReveal {
            0% {
                opacity: 0;
                transform: translateY(30px);
                filter: blur(6px);
            }

            60% {
                opacity: 0.8;
                filter: blur(1px);
            }

            100% {
                opacity: 1;
                transform: translateY(0);
                filter: blur(0);
            }
        }

        /* Thanh quét sáng (cursor sweep) chạy qua mỗi dòng khi reveal — kiểu typewriter cao cấp */
        .hero-line {
            position: relative;
        }

        .hero-line::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg,
                    transparent 0%,
                    rgba(255, 90, 95, 0.15) 45%,
                    rgba(255, 90, 95, 0.35) 50%,
                    rgba(255, 90, 95, 0.15) 55%,
                    transparent 100%);
            transform: translateX(-100%);
            pointer-events: none;
            animation: lineSweep 1.2s ease-out forwards;
            animation-delay: calc(var(--delay, 0s) + 0.3s);
        }

        @keyframes lineSweep {
            0% {
                transform: translateX(-100%);
                opacity: 0;
            }

            30% {
                opacity: 1;
            }

            100% {
                transform: translateX(100%);
                opacity: 0;
            }
        }

        /* Sau khi animation xong — em <em> của dòng 2 nhấn thêm glow nhẹ */
        .hero-line em {
            position: relative;
        }

        .hero-title-anim .hero-line:nth-child(2) em {
            animation: emGlow 2.5s ease-out 1.8s forwards;
        }

        @keyframes emGlow {
            0% {
                text-shadow: 0 0 0 rgba(255, 90, 95, 0);
            }

            50% {
                text-shadow: 0 0 30px rgba(255, 90, 95, 0.5);
            }

            100% {
                text-shadow: 0 0 20px rgba(255, 90, 95, 0.25);
            }
        }

        /* Tôn trọng prefers-reduced-motion — người dùng tắt animation ở OS thì bỏ hiệu ứng */
        @media (prefers-reduced-motion: reduce) {
            .hero-reveal {
                opacity: 1 !important;
                transform: none !important;
                filter: none !important;
                animation: none !important;
            }

            .hero-line::after {
                display: none !important;
            }

            .hero-title-anim .hero-line em {
                animation: none !important;
            }
        }

        /* ==================================================================
           PAYMENT DEMO ANIMATION — Hướng dẫn thanh toán kiểu video tutorial
           Tổng cycle: 12 giây (3 cảnh × 4 giây) rồi loop
           ================================================================== */

        .payment-demo-wrap {
            margin: 40px auto 60px;
            max-width: 440px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 28px;
        }

        /* ===== Phone frame ===== */
        .payment-phone {
            width: 280px;
            height: 560px;
            background: linear-gradient(180deg, #1a1f28 0%, #0d1118 100%);
            border-radius: 44px;
            padding: 10px;
            position: relative;
            box-shadow:
                0 0 0 2px rgba(191, 215, 234, 0.08),
                0 0 40px rgba(255, 90, 95, 0.15),
                0 30px 80px rgba(0, 0, 0, 0.7),
                inset 0 0 0 1px rgba(255, 255, 255, 0.05);
        }

        .phone-notch {
            position: absolute;
            top: 18px;
            left: 50%;
            transform: translateX(-50%);
            width: 90px;
            height: 22px;
            background: #000;
            border-radius: 14px;
            z-index: 10;
        }

        .phone-screen {
            width: 100%;
            height: 100%;
            background: #050505;
            border-radius: 36px;
            overflow: hidden;
            position: relative;
        }

        /* ===== Scene base ===== */
        .scene {
            position: absolute;
            inset: 0;
            padding: 50px 18px 18px;
            display: flex;
            flex-direction: column;
            opacity: 0;
            transform: translateX(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .scene-status-bar {
            display: flex;
            justify-content: space-between;
            font-size: 10px;
            color: rgba(191, 215, 234, 0.5);
            margin-bottom: 14px;
            padding: 0 4px;
        }

        .scene-header {
            font-size: 11px;
            text-align: center;
            color: rgba(191, 215, 234, 0.7);
            background: rgba(11, 57, 84, 0.35);
            padding: 7px 14px;
            border-radius: 20px;
            align-self: center;
            margin-bottom: 18px;
        }

        .scene-caption {
            margin-top: auto;
            font-size: 11px;
            text-align: center;
            color: var(--coral);
            font-weight: 600;
            letter-spacing: 0.5px;
            padding: 10px 0 4px;
            border-top: 1px solid rgba(255, 90, 95, 0.15);
            opacity: 0;
            animation: captionFade 0.8s ease 0.5s forwards;
        }

        /* ===== Scene 1: Product card ===== */
        .demo-product {
            background: linear-gradient(180deg, rgba(11, 57, 84, 0.3), rgba(10, 20, 32, 0.5));
            border: 1px solid rgba(191, 215, 234, 0.08);
            border-radius: 8px;
            padding: 20px 14px 14px;
            text-align: center;
        }

        .demo-product-img {
            width: 100px;
            height: 130px;
            margin: 0 auto 14px;
            background: linear-gradient(135deg, #1a2535, #0a1420);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 48px;
            border: 1px solid rgba(8, 126, 139, 0.3);
        }

        .demo-product-title {
            font-family: 'Montserrat', sans-serif;
            font-size: 14px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 6px;
            letter-spacing: -0.02em;
        }

        .demo-product-price {
            font-family: 'Montserrat', sans-serif;
            font-size: 18px;
            font-weight: 900;
            color: var(--coral);
            letter-spacing: -0.02em;
        }

        .demo-btn-buy {
            margin-top: 14px;
            background: linear-gradient(180deg, var(--coral), var(--crimson));
            color: #fff;
            padding: 14px;
            border-radius: 6px;
            text-align: center;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 1.5px;
            position: relative;
            box-shadow: 0 6px 20px rgba(200, 29, 37, 0.3);
            transform-origin: center;
            animation: btnPulse 1.2s ease-in-out 1.5s forwards;
        }

        @keyframes btnPulse {
            0% {
                transform: scale(1);
                box-shadow: 0 6px 20px rgba(200, 29, 37, 0.3);
            }

            40% {
                transform: scale(1.05);
                box-shadow: 0 8px 30px rgba(255, 90, 95, 0.6);
            }

            60% {
                transform: scale(0.96);
            }

            100% {
                transform: scale(1);
                box-shadow: 0 6px 20px rgba(200, 29, 37, 0.3);
            }
        }

        /* Cursor (ngón tay) */
        .demo-cursor {
            position: absolute;
            right: -8px;
            bottom: -12px;
            width: 28px;
            height: 28px;
            background: radial-gradient(circle at 35% 35%, #fff 0%, rgba(255, 255, 255, 0.3) 60%, transparent 70%);
            border-radius: 50%;
            border: 2px solid rgba(255, 255, 255, 0.8);
            box-shadow: 0 0 20px rgba(255, 90, 95, 0.8);
            opacity: 0;
            animation: cursorMove 2s ease 0.5s forwards;
        }

        @keyframes cursorMove {
            0% {
                opacity: 0;
                transform: translate(-40px, -60px) scale(0.5);
            }

            30% {
                opacity: 1;
                transform: translate(-40px, -60px) scale(1);
            }

            70% {
                opacity: 1;
                transform: translate(0, 0) scale(1);
            }

            85% {
                transform: translate(0, 0) scale(0.8);
            }

            100% {
                opacity: 1;
                transform: translate(0, 0) scale(1);
            }
        }

        /* ===== Scene 2: Form + QR ===== */
        .demo-form-field {
            margin-bottom: 14px;
        }

        .demo-form-field label {
            font-size: 10px;
            color: rgba(191, 215, 234, 0.6);
            text-transform: uppercase;
            letter-spacing: 1.2px;
            margin-bottom: 6px;
            display: block;
        }

        .demo-input {
            background: rgba(11, 57, 84, 0.2);
            border: 1px solid rgba(8, 126, 139, 0.25);
            border-radius: 6px;
            padding: 10px 12px;
            font-size: 12px;
            color: #fff;
            min-height: 38px;
            display: flex;
            align-items: center;
            position: relative;
        }

        .demo-typing {
            display: inline-block;
            overflow: hidden;
            white-space: nowrap;
            border-right: 2px solid var(--coral);
            width: 0;
            animation:
                typing 1.4s steps(13) 0.3s forwards,
                caretBlink 0.6s step-end infinite;
        }

        @keyframes typing {
            from {
                width: 0;
            }

            to {
                width: 100%;
            }
        }

        @keyframes caretBlink {
            50% {
                border-color: transparent;
            }
        }

        .demo-bank-box {
            background: linear-gradient(135deg, rgba(11, 57, 84, 0.4), rgba(10, 20, 32, 0.5));
            border: 1px solid rgba(8, 126, 139, 0.3);
            border-radius: 8px;
            padding: 12px 14px;
            margin-bottom: 12px;
        }

        .demo-bank-label {
            font-size: 10px;
            color: rgba(191, 215, 234, 0.7);
            letter-spacing: 1.5px;
            text-transform: uppercase;
        }

        .demo-bank-number {
            font-family: 'Montserrat', sans-serif;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            letter-spacing: 1px;
            margin: 4px 0;
        }

        .demo-bank-owner {
            font-size: 10px;
            color: rgba(191, 215, 234, 0.5);
        }

        .demo-qr {
            display: flex;
            align-items: center;
            gap: 12px;
            background: rgba(191, 215, 234, 0.03);
            border: 1px dashed rgba(191, 215, 234, 0.15);
            border-radius: 8px;
            padding: 10px 12px;
        }

        .demo-qr-inner {
            width: 44px;
            height: 44px;
            background:
                linear-gradient(45deg, #fff 25%, transparent 25%) 0 0/8px 8px,
                linear-gradient(-45deg, #fff 25%, transparent 25%) 0 0/8px 8px,
                #0d1118;
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0d1118;
            font-size: 10px;
            font-weight: 900;
            box-shadow: 0 0 12px rgba(8, 126, 139, 0.4);
            animation: qrScan 1.5s ease-in-out 1.2s infinite;
        }

        @keyframes qrScan {

            0%,
            100% {
                box-shadow: 0 0 12px rgba(8, 126, 139, 0.4);
            }

            50% {
                box-shadow: 0 0 24px rgba(255, 90, 95, 0.7);
            }
        }

        .demo-qr-label {
            font-size: 10px;
            color: rgba(191, 215, 234, 0.7);
            line-height: 1.3;
        }

        /* ===== Scene 3: Success + Email ===== */
        .demo-success {
            background: linear-gradient(135deg, rgba(8, 126, 139, 0.15), rgba(11, 57, 84, 0.2));
            border: 1px solid rgba(8, 126, 139, 0.3);
            border-radius: 10px;
            padding: 20px 14px;
            text-align: center;
            margin-bottom: 16px;
        }

        .demo-check {
            width: 52px;
            height: 52px;
            margin: 0 auto 10px;
        }

        .demo-check svg {
            width: 100%;
            height: 100%;
        }

        .check-circle {
            stroke: var(--teal);
            stroke-width: 2;
            stroke-dasharray: 151;
            stroke-dashoffset: 151;
            animation: drawCircle 0.6s ease 0.3s forwards;
        }

        .check-mark {
            stroke: var(--coral);
            stroke-width: 4;
            stroke-linecap: round;
            stroke-linejoin: round;
            stroke-dasharray: 45;
            stroke-dashoffset: 45;
            animation: drawCheck 0.4s ease 0.9s forwards;
        }

        @keyframes drawCircle {
            to {
                stroke-dashoffset: 0;
            }
        }

        @keyframes drawCheck {
            to {
                stroke-dashoffset: 0;
            }
        }

        .demo-success-title {
            font-family: 'Montserrat', sans-serif;
            font-size: 15px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 4px;
        }

        .demo-success-sub {
            font-size: 11px;
            color: rgba(191, 215, 234, 0.7);
        }

        .demo-email {
            background: rgba(11, 57, 84, 0.25);
            border: 1px solid rgba(191, 215, 234, 0.08);
            border-radius: 8px;
            padding: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
            transform: translateY(30px);
            opacity: 0;
            animation: emailSlideIn 0.6s ease 1.4s forwards;
        }

        @keyframes emailSlideIn {
            to {
                transform: translateY(0);
                opacity: 1;
            }
        }

        .demo-email-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(180deg, var(--coral), var(--crimson));
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            flex-shrink: 0;
            animation: emailPulse 1s ease 1.6s infinite;
        }

        @keyframes emailPulse {

            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(255, 90, 95, 0.5);
            }

            50% {
                box-shadow: 0 0 0 8px rgba(255, 90, 95, 0);
            }
        }

        .demo-email-body {
            flex: 1;
            min-width: 0;
        }

        .demo-email-from {
            font-size: 11px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 2px;
        }

        .demo-email-subj {
            font-size: 10px;
            color: rgba(191, 215, 234, 0.7);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .demo-email-time {
            font-size: 9px;
            color: rgba(191, 215, 234, 0.4);
            flex-shrink: 0;
        }

        @keyframes captionFade {
            to {
                opacity: 1;
            }
        }

        /* ===== SCENE CONTROLLER — 12s loop, mỗi scene 4s ===== */
        .scene-1 {
            animation: sceneCycle1 12s infinite;
        }

        .scene-2 {
            animation: sceneCycle2 12s infinite;
        }

        .scene-3 {
            animation: sceneCycle3 12s infinite;
        }

        @keyframes sceneCycle1 {

            0%,
            30% {
                opacity: 1;
                transform: translateX(0);
            }

            33%,
            100% {
                opacity: 0;
                transform: translateX(-30px);
            }
        }

        @keyframes sceneCycle2 {

            0%,
            30% {
                opacity: 0;
                transform: translateX(30px);
            }

            33%,
            63% {
                opacity: 1;
                transform: translateX(0);
            }

            66%,
            100% {
                opacity: 0;
                transform: translateX(-30px);
            }
        }

        @keyframes sceneCycle3 {

            0%,
            63% {
                opacity: 0;
                transform: translateX(30px);
            }

            66%,
            96% {
                opacity: 1;
                transform: translateX(0);
            }

            100% {
                opacity: 0;
                transform: translateX(-30px);
            }
        }

        /* Sub-animations replay mỗi loop */
        .scene-1 .demo-btn-buy {
            animation: btnPulse 1.2s ease-in-out 1.5s infinite;
            animation-iteration-count: 1;
        }

        /* ===== Progress bar ===== */
        .payment-progress {
            display: flex;
            align-items: center;
            gap: 8px;
            width: 100%;
            max-width: 380px;
        }

        .progress-step {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .progress-dot {
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: rgba(191, 215, 234, 0.12);
            border: 2px solid rgba(191, 215, 234, 0.2);
            transition: all 0.4s ease;
        }

        .progress-label {
            font-size: 10px;
            color: rgba(191, 215, 234, 0.5);
            letter-spacing: 0.5px;
            text-transform: uppercase;
            transition: color 0.4s ease;
        }

        .progress-line {
            flex: 1;
            height: 2px;
            background: rgba(191, 215, 234, 0.12);
            position: relative;
            border-radius: 2px;
            overflow: hidden;
        }

        .progress-line-fill {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, var(--coral), var(--crimson));
            transform-origin: left center;
            transform: scaleX(0);
        }

        /* Highlight progress theo scene */
        .payment-progress .progress-step:nth-child(1) .progress-dot {
            animation: dotActive 12s infinite;
        }

        .payment-progress .progress-step:nth-child(3) .progress-dot {
            animation: dotActive 12s infinite;
            animation-delay: -8s;
        }

        .payment-progress .progress-step:nth-child(5) .progress-dot {
            animation: dotActive 12s infinite;
            animation-delay: -4s;
        }

        .payment-progress .progress-step:nth-child(1) .progress-label {
            animation: labelActive 12s infinite;
        }

        .payment-progress .progress-step:nth-child(3) .progress-label {
            animation: labelActive 12s infinite;
            animation-delay: -8s;
        }

        .payment-progress .progress-step:nth-child(5) .progress-label {
            animation: labelActive 12s infinite;
            animation-delay: -4s;
        }

        .payment-progress .progress-line:nth-child(2) .progress-line-fill {
            animation: lineFill 12s infinite;
        }

        .payment-progress .progress-line:nth-child(4) .progress-line-fill {
            animation: lineFill 12s infinite;
            animation-delay: -8s;
        }

        @keyframes dotActive {

            0%,
            30% {
                background: var(--coral);
                border-color: var(--coral);
                box-shadow: 0 0 0 5px rgba(255, 90, 95, 0.2);
                transform: scale(1.2);
            }

            33%,
            100% {
                background: rgba(8, 126, 139, 0.5);
                border-color: var(--teal);
                box-shadow: none;
                transform: scale(1);
            }
        }

        @keyframes labelActive {

            0%,
            30% {
                color: var(--coral);
            }

            33%,
            100% {
                color: rgba(191, 215, 234, 0.5);
            }
        }

        @keyframes lineFill {
            0% {
                transform: scaleX(0);
            }

            30% {
                transform: scaleX(0);
            }

            33% {
                transform: scaleX(1);
            }

            100% {
                transform: scaleX(1);
            }
        }

        /* Mobile — phone nhỏ lại */
        @media (max-width: 768px) {
            .payment-demo-wrap {
                margin: 30px auto 40px;
                gap: 22px;
            }

            .payment-phone {
                width: 240px;
                height: 480px;
            }

            .scene {
                padding: 44px 14px 14px;
            }

            .demo-product-img {
                width: 80px;
                height: 105px;
                font-size: 36px;
            }

            .demo-product-title {
                font-size: 12px;
            }

            .demo-product-price {
                font-size: 16px;
            }

            .demo-btn-buy {
                font-size: 10px;
                padding: 12px;
            }

            .demo-bank-number {
                font-size: 16px;
            }

            .demo-success-title {
                font-size: 13px;
            }

            .progress-label {
                font-size: 9px;
            }
        }

        /* Respect reduced-motion */
        @media (prefers-reduced-motion: reduce) {

            .scene-1,
            .scene-2,
            .scene-3,
            .demo-btn-buy,
            .demo-cursor,
            .demo-typing,
            .demo-qr-inner,
            .check-circle,
            .check-mark,
            .demo-email,
            .demo-email-icon,
            .progress-dot,
            .progress-label,
            .progress-line-fill {
                animation: none !important;
            }

            .scene-1 {
                opacity: 1 !important;
                transform: none !important;
            }

            .scene-2,
            .scene-3 {
                display: none !important;
            }
        }

        /* ==================================================================
           AUTHOR SECTION — Về tác giả
           ================================================================== */
        .author-section {
            padding: 100px 40px;
            background:
                radial-gradient(ellipse 70% 80% at 20% 50%, rgba(11, 57, 84, 0.3) 0%, transparent 60%),
                linear-gradient(180deg, transparent 0%, rgba(8, 126, 139, 0.04) 50%, transparent 100%);
            position: relative;
        }

        .author-inner {
            max-width: 1200px;
            margin: 0 auto;
        }

        .author-grid {
            display: grid;
            grid-template-columns: 320px 1fr;
            gap: 60px;
            align-items: center;
        }

        .author-portrait {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
        }

        /* ==================================================================
           MYSTERY AVATAR — Animated hooded figure
           ================================================================== */
        .mystery-avatar {
            width: 280px;
            height: 340px;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            background: radial-gradient(ellipse 80% 70% at 50% 55%,
                    rgba(11, 57, 84, 0.4) 0%,
                    rgba(10, 20, 32, 0.6) 40%,
                    #050505 85%);
            border: 1px solid rgba(8, 126, 139, 0.2);
            border-radius: 4px;
            overflow: hidden;
            box-shadow:
                0 0 0 1px rgba(191, 215, 234, 0.05),
                0 20px 60px rgba(0, 0, 0, 0.6),
                inset 0 0 80px rgba(0, 0, 0, 0.6),
                0 0 80px rgba(255, 90, 95, 0.08);
        }

        /* Aura rings — vòng năng lượng xoay chậm quanh figure */
        .aura-ring {
            position: absolute;
            border-radius: 50%;
            border: 1px solid;
            pointer-events: none;
        }

        .aura-ring-1 {
            width: 280px;
            height: 280px;
            border-color: rgba(255, 90, 95, 0.08);
            border-style: dashed;
            animation: auraSpin 30s linear infinite;
        }

        .aura-ring-2 {
            width: 220px;
            height: 220px;
            border-color: rgba(8, 126, 139, 0.15);
            animation: auraSpin 20s linear infinite reverse;
        }

        .aura-ring-3 {
            width: 170px;
            height: 170px;
            border-color: rgba(255, 90, 95, 0.12);
            border-style: dotted;
            animation: auraSpin 15s linear infinite;
        }

        @keyframes auraSpin {
            from {
                transform: rotate(0deg);
            }

            to {
                transform: rotate(360deg);
            }
        }

        /* Particles — đốm sáng bay quanh, kiểu bụi sao */
        .particle {
            position: absolute;
            width: 3px;
            height: 3px;
            border-radius: 50%;
            background: var(--coral);
            box-shadow: 0 0 6px var(--coral);
            opacity: 0;
        }

        .particle-1 {
            top: 20%;
            left: 25%;
            animation: particleFloat 4s ease-in-out infinite;
            animation-delay: 0s;
        }

        .particle-2 {
            top: 35%;
            right: 18%;
            background: var(--teal2);
            box-shadow: 0 0 6px var(--teal2);
            animation: particleFloat 5s ease-in-out infinite;
            animation-delay: 1.2s;
        }

        .particle-3 {
            bottom: 30%;
            left: 20%;
            animation: particleFloat 4.5s ease-in-out infinite;
            animation-delay: 2.5s;
        }

        .particle-4 {
            bottom: 25%;
            right: 25%;
            background: var(--pastel);
            box-shadow: 0 0 6px var(--pastel);
            animation: particleFloat 3.8s ease-in-out infinite;
            animation-delay: 0.8s;
        }

        @keyframes particleFloat {

            0%,
            100% {
                opacity: 0;
                transform: translateY(0) scale(0.5);
            }

            20%,
            80% {
                opacity: 1;
                transform: translateY(-10px) scale(1);
            }

            50% {
                opacity: 0.6;
                transform: translateY(-20px) scale(1.2);
            }
        }

        /* Mystery figure — bóng nhân vật hooded */
        .mystery-figure {
            width: 180px;
            height: 220px;
            position: relative;
            z-index: 2;
            animation: figureBreath 5s ease-in-out infinite;
            filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.8));
        }

        .mystery-figure svg {
            width: 100%;
            height: 100%;
            display: block;
        }

        @keyframes figureBreath {

            0%,
            100% {
                transform: translateY(0);
            }

            50% {
                transform: translateY(-3px);
            }
        }

        /* Đôi mắt đỏ pulse — điểm nhấn đầy uy hiếp */
        .mystery-eyes {
            animation: eyesGlow 2.8s ease-in-out infinite;
            transform-origin: center;
        }

        @keyframes eyesGlow {

            0%,
            92%,
            100% {
                opacity: 1;
                filter: drop-shadow(0 0 8px rgba(255, 90, 95, 0.9));
            }

            95% {
                opacity: 0.1;
                filter: drop-shadow(0 0 2px rgba(255, 90, 95, 0.3));
            }

            97% {
                opacity: 1;
                filter: drop-shadow(0 0 12px rgba(255, 90, 95, 1));
            }
        }

        /* Status badge — "Đang ẩn danh" */
        .mystery-status {
            position: absolute;
            bottom: 16px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            align-items: center;
            gap: 7px;
            background: rgba(5, 5, 5, 0.85);
            border: 1px solid rgba(255, 90, 95, 0.3);
            padding: 5px 12px;
            border-radius: 100px;
            backdrop-filter: blur(10px);
            z-index: 3;
        }

        .status-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--coral);
            box-shadow: 0 0 8px var(--coral);
            animation: statusPulse 1.8s ease-in-out infinite;
        }

        @keyframes statusPulse {

            0%,
            100% {
                opacity: 1;
                box-shadow: 0 0 8px var(--coral), 0 0 0 0 rgba(255, 90, 95, 0.5);
            }

            50% {
                opacity: 0.6;
                box-shadow: 0 0 4px var(--coral), 0 0 0 6px rgba(255, 90, 95, 0);
            }
        }

        .status-text {
            font-size: 10px;
            color: var(--pastel);
            letter-spacing: 1.5px;
            text-transform: uppercase;
            font-weight: 500;
        }

        /* Hover — figure nhô lên, aura mạnh hơn */
        .mystery-avatar:hover .mystery-figure {
            animation-duration: 3s;
        }

        .mystery-avatar:hover .aura-ring-1,
        .mystery-avatar:hover .aura-ring-2,
        .mystery-avatar:hover .aura-ring-3 {
            animation-duration: 8s;
        }

        /* Reduced motion */
        @media (prefers-reduced-motion: reduce) {

            .aura-ring,
            .particle,
            .mystery-figure,
            .mystery-eyes,
            .status-dot {
                animation: none !important;
            }
        }

        .author-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: center;
        }

        .author-badge {
            font-size: 11px;
            color: var(--pastel);
            background: rgba(11, 57, 84, 0.4);
            border: 1px solid rgba(8, 126, 139, 0.3);
            padding: 6px 12px;
            border-radius: 100px;
            letter-spacing: 0.5px;
            font-weight: 500;
        }

        .author-content .section-label {
            margin-bottom: 12px;
        }

        .author-name {
            font-family: 'Montserrat', sans-serif !important;
            font-size: 48px !important;
            font-weight: 900 !important;
            color: #fff !important;
            letter-spacing: -0.03em !important;
            line-height: 1.05 !important;
            margin: 0 0 14px !important;
        }

        .author-tagline {
            font-size: 18px;
            line-height: 1.5;
            color: var(--pastel);
            margin-bottom: 28px;
            max-width: 560px;
        }

        .author-tagline em {
            color: var(--coral);
            font-style: normal;
            font-weight: 600;
        }

        .author-bio {
            color: rgba(232, 238, 244, 0.85);
            font-size: 15px;
            line-height: 1.75;
            max-width: 620px;
            margin-bottom: 32px;
        }

        .author-bio p {
            margin-bottom: 14px;
        }

        .author-bio strong {
            color: #fff;
            font-weight: 600;
        }

        .author-stats {
            display: flex;
            gap: 40px;
            padding-top: 24px;
            border-top: 1px solid rgba(191, 215, 234, 0.1);
        }

        .stat-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .stat-num {
            font-family: 'Montserrat', sans-serif;
            font-size: 30px;
            font-weight: 900;
            color: var(--coral);
            line-height: 1;
            letter-spacing: -0.02em;
        }

        .stat-label {
            font-size: 11px;
            color: var(--muted);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* ==================================================================
           PROOF SECTION — Social Proof
           ================================================================== */
        .proof-section {
            padding: 100px 40px;
            background: linear-gradient(180deg, transparent 0%, rgba(11, 57, 84, 0.08) 50%, transparent 100%);
            text-align: center;
        }

        .proof-inner {
            max-width: 1200px;
            margin: 0 auto;
        }

        .proof-sub {
            color: var(--muted);
            font-size: 15px;
            max-width: 600px;
            margin: -20px auto 50px;
        }

        .proof-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-bottom: 60px;
            text-align: left;
        }

        .proof-card {
            background: linear-gradient(180deg, rgba(11, 57, 84, 0.25), rgba(10, 20, 32, 0.35));
            border: 1px solid rgba(191, 215, 234, 0.08);
            border-radius: 4px;
            padding: 28px;
            position: relative;
            transition: all 0.3s ease;
        }

        .proof-card:hover {
            border-color: rgba(8, 126, 139, 0.3);
            transform: translateY(-2px);
        }

        .proof-card.proof-highlight {
            background: linear-gradient(180deg, rgba(255, 90, 95, 0.08), rgba(11, 57, 84, 0.25));
            border-color: rgba(255, 90, 95, 0.2);
        }

        .proof-stars {
            color: var(--coral);
            font-size: 14px;
            letter-spacing: 2px;
            margin-bottom: 14px;
        }

        .proof-quote {
            color: rgba(232, 238, 244, 0.9);
            font-size: 15px;
            line-height: 1.65;
            font-style: normal;
            margin: 0 0 20px;
            padding: 0;
            border: none;
            quotes: "\201C""\201D";
        }

        .proof-quote em {
            color: var(--coral);
            font-style: normal;
            font-weight: 600;
        }

        .proof-author {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-top: 16px;
            border-top: 1px solid rgba(191, 215, 234, 0.08);
        }

        .proof-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--navy), var(--teal));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            font-family: 'Montserrat', sans-serif;
            flex-shrink: 0;
        }

        .proof-meta {
            display: flex;
            flex-direction: column;
        }

        .proof-name {
            font-size: 13px;
            color: #fff;
            font-weight: 600;
        }

        .proof-role {
            font-size: 11px;
            color: var(--muted);
        }

        /* Screenshot grid */
        .proof-screenshots {
            margin-bottom: 50px;
        }

        .proof-sub-label {
            font-size: 12px;
            color: var(--pastel);
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 20px;
            opacity: 0.7;
        }

        .screenshot-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 12px;
        }

        .screenshot-item {
            aspect-ratio: 9/16;
            border-radius: 4px;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(11, 57, 84, 0.4), rgba(10, 20, 32, 0.6));
            border: 1px solid rgba(191, 215, 234, 0.08);
            position: relative;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .screenshot-item:hover {
            border-color: var(--teal);
            transform: scale(1.03);
        }

        .screenshot-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* Placeholder styling khi ảnh không load */
        .screenshot-item.ss-placeholder {
            background:
                repeating-linear-gradient(-45deg,
                    rgba(191, 215, 234, 0.02),
                    rgba(191, 215, 234, 0.02) 10px,
                    rgba(191, 215, 234, 0.04) 10px,
                    rgba(191, 215, 234, 0.04) 20px),
                linear-gradient(135deg, rgba(11, 57, 84, 0.4), rgba(10, 20, 32, 0.6));
        }

        .screenshot-item.ss-placeholder img {
            display: none;
        }

        .ss-label {
            position: absolute;
            bottom: 8px;
            left: 8px;
            right: 8px;
            font-size: 10px;
            color: rgba(191, 215, 234, 0.6);
            background: rgba(10, 20, 32, 0.7);
            padding: 3px 6px;
            border-radius: 3px;
            text-align: center;
            backdrop-filter: blur(4px);
        }

        /* Proof stats footer */
        .proof-stats {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 40px;
            padding: 30px;
            background: linear-gradient(135deg, rgba(11, 57, 84, 0.4), rgba(10, 20, 32, 0.6));
            border: 1px solid rgba(8, 126, 139, 0.2);
            border-radius: 4px;
        }

        .proof-stat {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .proof-stat-num {
            font-family: 'Montserrat', sans-serif;
            font-size: 36px;
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.02em;
            line-height: 1;
        }

        .proof-stat-label {
            font-size: 11px;
            color: var(--pastel);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-top: 6px;
            opacity: 0.8;
        }

        .proof-stat-divider {
            width: 1px;
            height: 40px;
            background: rgba(191, 215, 234, 0.15);
        }

        /* ==================================================================
           FAQ SECTION
           ================================================================== */
        .faq-section {
            padding: 100px 40px;
            background:
                radial-gradient(ellipse 60% 80% at 80% 50%, rgba(8, 126, 139, 0.08) 0%, transparent 60%);
        }

        .faq-inner {
            max-width: 820px;
            margin: 0 auto;
            text-align: center;
        }

        .faq-sub {
            color: var(--muted);
            font-size: 15px;
            max-width: 600px;
            margin: -20px auto 50px;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            text-align: left;
            margin-bottom: 40px;
        }

        .faq-item {
            background: linear-gradient(180deg, rgba(11, 57, 84, 0.2), rgba(10, 20, 32, 0.3));
            border: 1px solid rgba(191, 215, 234, 0.08);
            border-radius: 4px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: rgba(8, 126, 139, 0.3);
        }

        .faq-item[open] {
            background: linear-gradient(180deg, rgba(11, 57, 84, 0.35), rgba(10, 20, 32, 0.4));
            border-color: rgba(255, 90, 95, 0.2);
        }

        .faq-item summary {
            padding: 18px 24px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            list-style: none;
            user-select: none;
            transition: all 0.2s ease;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-q {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            line-height: 1.45;
            flex: 1;
        }

        .faq-toggle {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(8, 126, 139, 0.2);
            border: 1px solid rgba(8, 126, 139, 0.4);
            position: relative;
            flex-shrink: 0;
            transition: all 0.3s ease;
        }

        .faq-toggle::before,
        .faq-toggle::after {
            content: '';
            position: absolute;
            background: var(--pastel);
            top: 50%;
            left: 50%;
            transition: all 0.3s ease;
        }

        .faq-toggle::before {
            width: 10px;
            height: 2px;
            transform: translate(-50%, -50%);
        }

        .faq-toggle::after {
            width: 2px;
            height: 10px;
            transform: translate(-50%, -50%);
        }

        .faq-item[open] .faq-toggle {
            background: var(--coral);
            border-color: var(--coral);
            transform: rotate(180deg);
        }

        .faq-item[open] .faq-toggle::before {
            background: #fff;
        }

        .faq-item[open] .faq-toggle::after {
            opacity: 0;
        }

        .faq-a {
            padding: 0 24px 22px;
            color: rgba(232, 238, 244, 0.85);
            font-size: 14px;
            line-height: 1.7;
        }

        .faq-a p {
            margin-bottom: 10px;
        }

        .faq-a p:last-child {
            margin-bottom: 0;
        }

        .faq-a strong {
            color: #fff;
        }

        .faq-a ul,
        .faq-a ol {
            margin: 10px 0;
            padding-left: 24px;
        }

        .faq-a li {
            margin-bottom: 6px;
        }

        /* FAQ CTA footer */
        .faq-cta {
            padding: 30px;
            background: linear-gradient(135deg, rgba(11, 57, 84, 0.4), rgba(10, 20, 32, 0.6));
            border: 1px solid rgba(8, 126, 139, 0.25);
            border-radius: 4px;
            text-align: center;
        }

        .faq-cta p {
            color: var(--pastel);
            font-size: 15px;
            margin-bottom: 16px;
        }

        .faq-cta-btn {
            display: inline-block;
            background: linear-gradient(180deg, var(--coral), var(--crimson));
            color: #fff !important;
            padding: 14px 28px;
            border-radius: 4px;
            font-weight: 700;
            font-size: 13px;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            text-decoration: none;
            box-shadow: 0 8px 24px rgba(200, 29, 37, 0.25);
            transition: all 0.3s ease;
        }

        .faq-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(255, 90, 95, 0.4);
            color: #fff !important;
        }

        /* ==================================================================
           MOBILE — all 3 new sections
           ================================================================== */
        @media (max-width: 768px) {

            /* Author — avatar + tên cùng hàng */
            .author-section {
                padding: 50px 16px;
            }

            .author-inner {
                display: block;
            }

            /* Bỏ grid, dùng block flow + flex row cho phần đầu */
            .author-grid {
                display: block !important;
                text-align: left;
            }

            /* HEADER ROW: avatar trái + (section-label + tên + tagline) phải */
            .author-grid::before {
                content: '';
                display: block;
            }

            .author-portrait {
                float: left;
                width: 130px;
                margin: 0 16px 12px 0;
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 10px;
            }

            /* Avatar nhỏ gọn */
            .mystery-avatar {
                width: 130px;
                height: 160px;
                box-shadow:
                    0 0 0 1px rgba(191, 215, 234, 0.05),
                    0 10px 30px rgba(0, 0, 0, 0.6),
                    inset 0 0 40px rgba(0, 0, 0, 0.6),
                    0 0 40px rgba(255, 90, 95, 0.08);
            }

            .aura-ring-1 {
                width: 130px;
                height: 130px;
            }

            .aura-ring-2 {
                width: 100px;
                height: 100px;
            }

            .aura-ring-3 {
                width: 78px;
                height: 78px;
            }

            .mystery-figure {
                width: 82px;
                height: 100px;
            }

            .mystery-status {
                bottom: 7px;
                padding: 3px 7px;
                gap: 4px;
            }

            .status-text {
                font-size: 7px;
                letter-spacing: 0.6px;
            }

            .status-dot {
                width: 5px;
                height: 5px;
            }

            .author-badges {
                display: flex;
                flex-direction: column;
                gap: 5px;
                width: 100%;
                align-items: stretch;
            }

            .author-badge {
                font-size: 9.5px;
                padding: 4px 8px;
                white-space: nowrap;
                text-align: center;
            }

            /* Content block — chảy tự nhiên cạnh float avatar */
            .author-content {
                display: block;
                /* Bỏ overflow hidden để bio/stats có thể clear float về full width */
            }

            /* Wrap 3 phần tử đầu (label, name, tagline) thành 1 BFC riêng */
            .author-content .section-label {
                overflow: hidden;
                /* BFC trigger */
                font-size: 10px !important;
                letter-spacing: 2px !important;
                margin: 4px 0 8px !important;
                color: var(--coral) !important;
                text-align: left !important;
            }

            .author-name {
                overflow: hidden;
                font-size: 26px !important;
                margin: 0 0 10px !important;
                text-align: left !important;
                line-height: 1.1 !important;
            }

            .author-tagline {
                overflow: hidden;
                font-size: 13px;
                line-height: 1.5;
                margin: 0 0 16px;
                text-align: left;
            }

            /* Bio — đoạn đầu chảy cạnh avatar, từ đoạn 2 trở đi full width */
            .author-bio {
                display: block;
                font-size: 14px;
                margin: 16px 0 0 !important;
                padding: 0 !important;
                text-align: left !important;
                max-width: none !important;
            }

            .author-bio p {
                margin-left: 0 !important;
                padding-left: 0 !important;
                max-width: none !important;
                margin-bottom: 14px;
            }

            /* Đoạn đầu tiên — chảy cạnh avatar tự nhiên (không clear) */
            .author-bio p:first-child {
                margin-top: 0;
            }

            /* Từ đoạn thứ 2 trở đi — bắt buộc full width, thoát khỏi float */
            .author-bio p:nth-child(n+2) {
                clear: both !important;
            }

            /* Stats — căn giữa toàn khối */
            .author-stats {
                clear: both !important;
                display: flex !important;
                justify-content: center !important;
                gap: 24px;
                flex-wrap: nowrap;
                margin-top: 22px;
                padding-top: 20px;
                text-align: center;
                width: 100%;
            }

            .stat-item {
                flex: 0 1 auto;
                align-items: center;
                text-align: center;
                display: flex;
                flex-direction: column;
            }

            .stat-num {
                font-size: 20px;
                text-align: center;
            }

            .stat-label {
                font-size: 9.5px;
                letter-spacing: 0.5px;
                text-align: center;
            }

            /* Proof */
            .proof-section {
                padding: 60px 16px;
            }

            .proof-grid {
                grid-template-columns: 1fr;
                gap: 12px;
                margin-bottom: 40px;
            }

            .proof-card {
                padding: 20px;
            }

            .proof-quote {
                font-size: 13.5px;
            }

            .screenshot-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 8px;
            }

            .proof-stats {
                gap: 16px;
                padding: 22px 16px;
                flex-wrap: wrap;
            }

            .proof-stat-num {
                font-size: 26px;
            }

            .proof-stat-label {
                font-size: 9.5px;
                letter-spacing: 0.8px;
            }

            .proof-stat-divider {
                display: none;
            }

            /* FAQ */
            .faq-section {
                padding: 60px 16px;
            }

            .faq-item summary {
                padding: 14px 16px;
            }

            .faq-q {
                font-size: 13.5px;
            }

            .faq-a {
                padding: 0 16px 16px;
                font-size: 13px;
            }

            .faq-toggle {
                width: 22px;
                height: 22px;
            }

            .faq-cta {
                padding: 22px 16px;
            }

            .faq-cta-btn {
                padding: 12px 22px;
                font-size: 12px;
                letter-spacing: 0.8px;
            }
        }

        @media (max-width: 420px) {

            /* iPhone nhỏ — avatar thu gọn thêm */
            .author-portrait {
                width: 110px;
                margin: 0 12px 10px 0;
            }

            .mystery-avatar {
                width: 110px;
                height: 138px;
            }

            .aura-ring-1 {
                width: 110px;
                height: 110px;
            }

            .aura-ring-2 {
                width: 85px;
                height: 85px;
            }

            .aura-ring-3 {
                width: 65px;
                height: 65px;
            }

            .mystery-figure {
                width: 68px;
                height: 84px;
            }

            .mystery-status {
                bottom: 5px;
                padding: 2.5px 6px;
                gap: 3px;
            }

            .status-text {
                font-size: 6px;
                letter-spacing: 0.4px;
            }

            .status-dot {
                width: 4px;
                height: 4px;
            }

            .author-badge {
                font-size: 8.5px;
                padding: 3.5px 6px;
            }

            .author-name {
                font-size: 22px !important;
            }

            .author-tagline {
                font-size: 12.5px !important;
            }

            .author-content .section-label {
                font-size: 9.5px !important;
                letter-spacing: 1.5px !important;
            }

            .author-bio {
                font-size: 13px;
            }

            .author-stats {
                gap: 8px;
            }

            .stat-num {
                font-size: 18px;
            }

            .stat-label {
                font-size: 8.5px;
            }

            .screenshot-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 6px;
            }

            .proof-card {
                padding: 16px;
            }

            .proof-quote {
                font-size: 13px;
            }
        }

        /* ==================================================================
           STICKY MOBILE CTA — luôn hiện khi scroll
           ================================================================== */
        .sticky-mobile-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 300;
            background: linear-gradient(180deg, rgba(8, 18, 32, 0.95) 0%, rgba(5, 5, 5, 0.98) 100%);
            border-top: 1px solid rgba(8, 126, 139, 0.3);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            padding: 10px 14px;
            padding-bottom: calc(10px + env(safe-area-inset-bottom, 0));
            transform: translateY(110%);
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.4);
            display: none;
            /* Chỉ hiện trên mobile */
        }

        .sticky-mobile-cta.visible {
            transform: translateY(0);
        }

        .sticky-cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            max-width: 500px;
            margin: 0 auto;
        }

        .sticky-cta-info {
            display: flex;
            flex-direction: column;
            gap: 2px;
            flex-shrink: 0;
        }

        .sticky-cta-label {
            font-size: 10px;
            color: var(--pastel);
            letter-spacing: 1px;
            text-transform: uppercase;
            opacity: 0.75;
        }

        .sticky-cta-price {
            font-size: 13px;
            color: #fff;
            font-weight: 500;
        }

        .sticky-cta-price strong {
            font-family: 'Montserrat', sans-serif;
            font-weight: 800;
            color: var(--coral);
            font-size: 16px;
            letter-spacing: -0.02em;
        }

        .sticky-cta-btn {
            background: linear-gradient(180deg, var(--coral), var(--crimson));
            color: #fff !important;
            padding: 12px 20px;
            border-radius: 4px;
            font-weight: 700;
            font-size: 12px;
            letter-spacing: 1px;
            text-transform: uppercase;
            text-decoration: none;
            box-shadow: 0 4px 14px rgba(200, 29, 37, 0.4);
            white-space: nowrap;
            flex-shrink: 0;
            transition: transform 0.2s ease;
        }

        .sticky-cta-btn:active {
            transform: scale(0.96);
        }

        /* Chỉ hiện trên mobile */
        @media (max-width: 768px) {
            .sticky-mobile-cta {
                display: block;
            }

            /* Khi sticky CTA hiện, đẩy Zalo float lên để không bị che */
            .sticky-mobile-cta.visible~.zalo-float {
                bottom: 84px;
            }

            /* Bottom padding cho body khi CTA hiện để scroll không bị che content cuối */
            .sticky-mobile-cta.visible~footer {
                padding-bottom: 90px;
            }
        }

        /* ==================================================================
           FOOTER — Full layout
           ================================================================== */
        .site-footer {
            background: linear-gradient(180deg, #050a12 0%, #020408 100%);
            border-top: 1px solid rgba(8, 126, 139, 0.2);
            padding: 70px 40px 30px;
            color: var(--pastel);
            position: relative;
        }

        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 50px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(191, 215, 234, 0.08);
        }

        .footer-col {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-brand {
            max-width: 380px;
        }

        .footer-logo {
            font-family: 'Montserrat', sans-serif;
            font-weight: 900;
            font-size: 22px;
            letter-spacing: 4px;
            color: #fff;
            margin-bottom: 6px;
        }

        .footer-logo em {
            color: var(--coral);
            font-style: normal;
        }

        .footer-tagline {
            font-size: 13.5px;
            line-height: 1.65;
            color: rgba(191, 215, 234, 0.7);
            margin: 0 0 18px;
        }

        .footer-socials {
            display: flex;
            gap: 10px;
        }

        .footer-socials a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(11, 57, 84, 0.5);
            border: 1px solid rgba(8, 126, 139, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--pastel) !important;
            transition: all 0.25s ease;
            text-decoration: none;
        }

        .footer-socials a:hover {
            background: var(--coral);
            border-color: var(--coral);
            color: #fff !important;
            transform: translateY(-2px);
        }

        .footer-col-title {
            font-family: 'Montserrat', sans-serif;
            font-size: 12px;
            font-weight: 700;
            color: #fff;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin: 0 0 8px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links li {
            margin: 0;
        }

        .footer-links a {
            color: rgba(191, 215, 234, 0.65) !important;
            text-decoration: none;
            font-size: 13px;
            transition: color 0.2s ease;
            cursor: pointer;
        }

        .footer-links a:hover {
            color: var(--coral) !important;
        }

        /* Privacy banner */
        .footer-privacy-note {
            background: rgba(11, 57, 84, 0.3);
            border: 1px solid rgba(8, 126, 139, 0.2);
            border-radius: 4px;
            padding: 16px 20px;
            margin: 32px 0 24px;
            font-size: 13px;
            line-height: 1.6;
            color: rgba(232, 238, 244, 0.8);
        }

        .footer-privacy-note strong {
            color: var(--coral);
        }

        .footer-bottom {
            display: flex;
            flex-direction: column;
            gap: 6px;
            padding-top: 4px;
        }

        .footer-copyright {
            font-size: 12px;
            color: rgba(191, 215, 234, 0.55);
            margin: 0;
            line-height: 1.6;
        }

        .footer-copyright strong {
            color: var(--pastel);
            font-weight: 600;
        }

        .footer-disclaimer {
            font-size: 11.5px;
            color: rgba(191, 215, 234, 0.4);
            margin: 0;
            line-height: 1.6;
        }

        .footer-disclaimer strong {
            color: var(--coral);
        }

        /* Ethics notice trong footer — nổi bật hơn copyright */
        .footer-ethics-notice {
            font-size: 12px;
            color: rgba(232, 238, 244, 0.7);
            line-height: 1.6;
            margin: 0 0 10px;
            padding: 10px 14px;
            background: rgba(11, 57, 84, 0.25);
            border-left: 2px solid var(--coral);
            border-radius: 0 3px 3px 0;
        }

        .footer-ethics-notice strong {
            color: #fff;
            font-weight: 600;
        }

        /* Footer mobile */
        @media (max-width: 768px) {
            .site-footer {
                padding: 50px 20px 24px;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
                padding-bottom: 28px;
            }

            .footer-brand {
                grid-column: 1 / -1;
                max-width: 100%;
            }

            .footer-logo {
                font-size: 20px;
                letter-spacing: 3px;
            }

            .footer-tagline {
                font-size: 13px;
            }

            .footer-privacy-note {
                padding: 14px 16px;
                font-size: 12.5px;
            }

            .footer-copyright,
            .footer-disclaimer {
                font-size: 11.5px;
            }
        }

        @media (max-width: 420px) {
            .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        /* ==================================================================
           LEGAL MODAL — Privacy, Terms, Refund, Copyright
           ================================================================== */
        .legal-modal {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.85);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            z-index: 400;
            display: none;
            align-items: center;
            justify-content: center;
            padding: 20px;
            opacity: 0;
            transition: opacity 0.25s ease;
        }

        .legal-modal.active {
            display: flex;
            opacity: 1;
        }

        .legal-modal-content {
            background: linear-gradient(180deg, #0a1420 0%, #050a12 100%);
            border: 1px solid rgba(8, 126, 139, 0.3);
            border-radius: 6px;
            max-width: 700px;
            width: 100%;
            max-height: 85vh;
            overflow-y: auto;
            padding: 40px 36px;
            position: relative;
            box-shadow: 0 30px 80px rgba(0, 0, 0, 0.7);
        }

        .legal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(11, 57, 84, 0.5);
            border: 1px solid rgba(8, 126, 139, 0.3);
            color: var(--pastel);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0;
            transition: all 0.25s ease;
            z-index: 2;
        }

        .legal-close:hover {
            background: rgba(255, 90, 95, 0.15);
            border-color: var(--coral);
            color: var(--coral);
            transform: rotate(90deg);
        }

        .legal-content h2 {
            font-family: 'Montserrat', sans-serif;
            font-size: 26px;
            font-weight: 800;
            color: #fff;
            margin: 0 0 8px;
            letter-spacing: -0.02em;
        }

        .legal-updated {
            font-size: 12px;
            color: var(--muted);
            margin: 0 0 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid rgba(191, 215, 234, 0.08);
        }

        .legal-content h3 {
            font-family: 'Montserrat', sans-serif;
            font-size: 15px;
            font-weight: 700;
            color: var(--coral);
            margin: 22px 0 10px;
            letter-spacing: 0.3px;
        }

        .legal-content p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(232, 238, 244, 0.85);
            margin: 0 0 10px;
        }

        .legal-content ul {
            margin: 0 0 14px;
            padding-left: 22px;
        }

        .legal-content ul li {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(232, 238, 244, 0.85);
            margin-bottom: 6px;
        }

        .legal-content strong {
            color: #fff;
            font-weight: 600;
        }

        @media (max-width: 768px) {
            .legal-modal {
                padding: 12px;
            }

            .legal-modal-content {
                padding: 32px 22px;
                max-height: 88vh;
            }

            .legal-content h2 {
                font-size: 22px;
            }

            .legal-content h3 {
                font-size: 14px;
                margin: 18px 0 8px;
            }

            .legal-content p,
            .legal-content ul li {
                font-size: 13.5px;
            }
        }

        /* ==================================================================
           EXIT-INTENT POPUP
           ================================================================== */
        .exit-popup {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.88);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            z-index: 500;
            display: none;
            align-items: center;
            justify-content: center;
            padding: 20px;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .exit-popup.active {
            display: flex;
            opacity: 1;
            animation: exitFadeIn 0.4s ease forwards;
        }

        @keyframes exitFadeIn {
            from {
                opacity: 0;
            }

            to {
                opacity: 1;
            }
        }

        .exit-popup-content {
            background: linear-gradient(135deg, #0e1a28 0%, #050a12 100%);
            border: 1px solid rgba(8, 126, 139, 0.3);
            border-radius: 8px;
            max-width: 520px;
            width: 100%;
            padding: 40px 34px 30px;
            position: relative;
            text-align: center;
            box-shadow:
                0 0 0 1px rgba(255, 90, 95, 0.15),
                0 30px 80px rgba(0, 0, 0, 0.7),
                0 0 80px rgba(255, 90, 95, 0.15);
            animation: exitSlideUp 0.4s cubic-bezier(0.22, 1, 0.36, 1);
        }

        @keyframes exitSlideUp {
            from {
                transform: translateY(40px) scale(0.95);
                opacity: 0;
            }

            to {
                transform: translateY(0) scale(1);
                opacity: 1;
            }
        }

        .exit-close {
            position: absolute;
            top: 14px;
            right: 14px;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(11, 57, 84, 0.5);
            border: 1px solid rgba(8, 126, 139, 0.3);
            color: var(--pastel);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0;
            transition: all 0.25s ease;
        }

        .exit-close:hover {
            background: rgba(255, 90, 95, 0.15);
            border-color: var(--coral);
            color: var(--coral);
            transform: rotate(90deg);
        }

        .exit-badge {
            display: inline-block;
            background: rgba(255, 90, 95, 0.15);
            border: 1px solid rgba(255, 90, 95, 0.35);
            color: var(--coral);
            padding: 6px 14px;
            border-radius: 100px;
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .exit-title {
            font-family: 'Montserrat', sans-serif !important;
            font-size: 26px !important;
            font-weight: 900 !important;
            color: #fff !important;
            margin: 0 0 12px !important;
            letter-spacing: -0.02em !important;
            line-height: 1.2 !important;
        }

        .exit-desc {
            font-size: 14px;
            line-height: 1.6;
            color: rgba(232, 238, 244, 0.8);
            margin: 0 0 24px;
        }

        .exit-desc strong {
            color: #fff;
            font-weight: 600;
        }

        .exit-desc em {
            color: var(--coral);
            font-style: normal;
            font-weight: 600;
        }

        .exit-offer {
            background: linear-gradient(135deg, rgba(11, 57, 84, 0.4), rgba(10, 20, 32, 0.6));
            border: 1px solid rgba(8, 126, 139, 0.25);
            border-radius: 6px;
            padding: 18px;
            margin-bottom: 22px;
            text-align: left;
        }

        .exit-offer-book {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 14px;
        }

        .exit-book-emoji {
            width: 52px;
            height: 52px;
            background: linear-gradient(135deg, #1a2535, #0a1420);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            flex-shrink: 0;
            border: 1px solid rgba(8, 126, 139, 0.3);
        }

        .exit-book-info {
            flex: 1;
            min-width: 0;
        }

        .exit-book-title {
            font-family: 'Montserrat', sans-serif;
            font-size: 15px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 3px;
            letter-spacing: -0.02em;
        }

        .exit-book-desc {
            font-size: 12px;
            line-height: 1.45;
            color: rgba(191, 215, 234, 0.7);
        }

        .exit-price-row {
            display: flex;
            gap: 10px;
            padding-top: 14px;
            border-top: 1px solid rgba(191, 215, 234, 0.08);
        }

        .exit-price-item {
            flex: 1;
            padding: 10px;
            background: rgba(11, 57, 84, 0.3);
            border-radius: 4px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            border: 1px solid transparent;
        }

        .exit-price-item.exit-price-recommended {
            background: rgba(255, 90, 95, 0.1);
            border-color: rgba(255, 90, 95, 0.3);
        }

        .exit-price-label {
            font-size: 10px;
            color: var(--pastel);
            text-transform: uppercase;
            letter-spacing: 1px;
            opacity: 0.8;
        }

        .exit-price-val {
            font-family: 'Montserrat', sans-serif;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.02em;
        }

        .exit-price-recommended .exit-price-val {
            color: var(--coral);
        }

        .exit-actions {
            display: flex;
            gap: 10px;
            margin-bottom: 14px;
        }

        .exit-btn-primary,
        .exit-btn-secondary {
            flex: 1;
            padding: 13px 14px;
            border-radius: 4px;
            font-weight: 700;
            font-size: 12.5px;
            letter-spacing: 1px;
            text-transform: uppercase;
            text-decoration: none;
            cursor: pointer;
            transition: all 0.25s ease;
            border: none;
            font-family: 'Be Vietnam Pro', sans-serif;
            text-align: center;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .exit-btn-primary {
            background: linear-gradient(180deg, var(--coral), var(--crimson));
            color: #fff;
            box-shadow: 0 6px 18px rgba(200, 29, 37, 0.35);
        }

        .exit-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(255, 90, 95, 0.5);
        }

        .exit-btn-secondary {
            background: transparent;
            color: var(--pastel) !important;
            border: 1px solid rgba(191, 215, 234, 0.2);
        }

        .exit-btn-secondary:hover {
            border-color: var(--teal);
            color: #fff !important;
            background: rgba(8, 126, 139, 0.1);
        }

        .exit-hint {
            font-size: 11px;
            color: rgba(191, 215, 234, 0.4);
            margin: 0;
            font-style: italic;
        }

        @media (max-width: 520px) {
            .exit-popup-content {
                padding: 32px 20px 24px;
            }

            .exit-title {
                font-size: 22px !important;
            }

            .exit-desc {
                font-size: 13px;
            }

            .exit-actions {
                flex-direction: column;
            }

            .exit-price-val {
                font-size: 16px;
            }
        }

        /* ==================================================================
           LAZY-LOAD PAYMENT DEMO — animation pause khi không trong view
           ================================================================== */
        .payment-phone:not(.in-view) .scene,
        .payment-phone:not(.in-view) .scene *,
        .payment-phone:not(.in-view) .progress-dot,
        .payment-phone:not(.in-view) .progress-line-fill,
        .payment-phone:not(.in-view) .progress-label {
            animation-play-state: paused !important;
        }

        .payment-phone.in-view .scene,
        .payment-phone.in-view .scene *,
        .payment-phone.in-view .progress-dot,
        .payment-phone.in-view .progress-line-fill,
        .payment-phone.in-view .progress-label {
            animation-play-state: running;
        }

        /* ==================================================================
           ETHICS SECTION — Lời dặn trước khi đọc
           Phong cách: ẩn sĩ cao thủ, lời thề, nghiêm trang nhưng không scary
           ================================================================== */
        .ethics-section {
            padding: 100px 40px;
            background:
                radial-gradient(ellipse 70% 80% at 50% 30%, rgba(11, 57, 84, 0.35) 0%, transparent 60%),
                linear-gradient(180deg, #050a12 0%, #020408 100%);
            position: relative;
            overflow: hidden;
        }

        /* Hiệu ứng "vệt sáng lạnh" ở trên cùng tạo cảm giác thiêng liêng */
        .ethics-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            width: 1px;
            height: 120px;
            background: linear-gradient(180deg,
                    transparent 0%,
                    rgba(255, 90, 95, 0.5) 50%,
                    transparent 100%);
            transform: translateX(-50%);
            opacity: 0.6;
        }

        .ethics-inner {
            max-width: 780px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .ethics-card {
            background: linear-gradient(180deg,
                    rgba(10, 20, 32, 0.7) 0%,
                    rgba(5, 10, 18, 0.9) 100%);
            border: 1px solid rgba(8, 126, 139, 0.25);
            border-radius: 4px;
            padding: 60px 60px 50px;
            text-align: center;
            position: relative;
            box-shadow:
                0 0 0 1px rgba(255, 90, 95, 0.06),
                0 30px 80px rgba(0, 0, 0, 0.6),
                inset 0 0 80px rgba(11, 57, 84, 0.3);
        }

        /* Góc trang trí 4 cạnh — kiểu phong ấn cổ */
        .ethics-card::before,
        .ethics-card::after {
            content: '';
            position: absolute;
            width: 40px;
            height: 40px;
            border: 1px solid rgba(255, 90, 95, 0.4);
            pointer-events: none;
        }

        .ethics-card::before {
            top: 14px;
            left: 14px;
            border-right: none;
            border-bottom: none;
        }

        .ethics-card::after {
            bottom: 14px;
            right: 14px;
            border-left: none;
            border-top: none;
        }

        /* Icon kiếm */
        .ethics-icon {
            width: 70px;
            height: 70px;
            margin: 0 auto 22px;
            background: linear-gradient(135deg, rgba(255, 90, 95, 0.1), rgba(11, 57, 84, 0.3));
            border: 1px solid rgba(255, 90, 95, 0.3);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--coral);
            box-shadow:
                0 0 0 1px rgba(255, 90, 95, 0.1),
                0 0 30px rgba(255, 90, 95, 0.15);
        }

        .ethics-kicker {
            font-size: 11px;
            color: var(--coral);
            letter-spacing: 4px;
            text-transform: uppercase;
            font-weight: 600;
            margin: 0 0 14px;
        }

        .ethics-title {
            font-family: 'Montserrat', sans-serif !important;
            font-size: 36px !important;
            font-weight: 900 !important;
            color: #fff !important;
            letter-spacing: -0.02em !important;
            line-height: 1.15 !important;
            margin: 0 0 40px !important;
        }

        .ethics-title em {
            color: var(--coral) !important;
            font-style: normal !important;
            background: none !important;
            -webkit-text-fill-color: var(--coral) !important;
            font-weight: 900 !important;
        }

        .ethics-body {
            text-align: left;
        }

        .ethics-lead {
            font-size: 18px;
            line-height: 1.65;
            color: rgba(232, 238, 244, 0.92);
            margin: 0 0 32px;
            text-align: center;
        }

        .ethics-lead strong {
            color: #fff;
            font-weight: 600;
        }

        .ethics-axioms {
            margin: 0 0 36px;
            padding: 24px 26px;
            background: rgba(11, 57, 84, 0.25);
            border-left: 2px solid var(--coral);
            border-radius: 0 4px 4px 0;
        }

        .ethics-axiom {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            font-size: 15px;
            line-height: 1.7;
            color: rgba(232, 238, 244, 0.85);
            padding: 6px 0;
        }

        .ethics-axiom+.ethics-axiom {
            margin-top: 8px;
        }

        .axiom-marker {
            color: var(--coral);
            font-weight: 700;
            flex-shrink: 0;
            opacity: 0.7;
        }

        .ethics-axiom em {
            color: var(--coral);
            font-style: normal;
            font-weight: 600;
        }

        /* Metaphor dao — trung tâm cảm xúc */
        .ethics-metaphor {
            font-size: 17px;
            line-height: 1.75;
            color: rgba(232, 238, 244, 0.9);
            text-align: center;
            margin: 36px auto;
            max-width: 560px;
            font-style: italic;
            padding: 20px 0;
        }

        .ethics-metaphor strong {
            color: #fff;
            font-weight: 600;
            font-style: normal;
        }

        .ethics-metaphor em {
            color: var(--pastel);
            opacity: 0.9;
        }

        /* Lời phán quyết */
        .ethics-verdict {
            background: linear-gradient(135deg, rgba(255, 90, 95, 0.08), rgba(200, 29, 37, 0.04));
            border: 1px solid rgba(255, 90, 95, 0.2);
            border-radius: 4px;
            padding: 22px 24px;
            margin: 0 auto 36px;
            text-align: center;
            max-width: 520px;
        }

        .ethics-verdict p {
            font-family: 'Montserrat', sans-serif;
            font-size: 17px;
            line-height: 1.5;
            color: #fff;
            margin: 0;
            letter-spacing: -0.01em;
        }

        .ethics-verdict strong {
            color: var(--coral);
            font-weight: 800;
        }

        .ethics-audience {
            font-size: 14.5px;
            line-height: 1.75;
            color: rgba(191, 215, 234, 0.75);
            text-align: center;
            margin: 0 0 32px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Đường phân cách tinh tế */
        .ethics-divider {
            width: 60px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--coral), transparent);
            margin: 0 auto 32px;
            opacity: 0.5;
        }

        /* 2 lựa chọn cuối */
        .ethics-final {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 460px;
            margin: 0 auto;
        }

        .ethics-choice {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 20px;
            border-radius: 4px;
            font-size: 14.5px;
            line-height: 1.5;
            background: rgba(10, 20, 32, 0.5);
            border: 1px solid rgba(191, 215, 234, 0.1);
        }

        .ethics-choice strong {
            color: #fff;
            font-weight: 600;
        }

        .choice-mark {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .ethics-choice-no .choice-mark {
            background: rgba(255, 90, 95, 0.15);
            color: var(--coral);
            border: 1px solid rgba(255, 90, 95, 0.3);
        }

        .ethics-choice-no {
            color: rgba(232, 238, 244, 0.75);
        }

        .ethics-choice-yes .choice-mark {
            background: rgba(8, 126, 139, 0.2);
            color: var(--teal2);
            border: 1px solid rgba(8, 126, 139, 0.4);
        }

        .ethics-choice-yes {
            color: rgba(232, 238, 244, 0.9);
            border-color: rgba(8, 126, 139, 0.2);
        }

        /* Mobile */
        @media (max-width: 768px) {
            .ethics-section {
                padding: 60px 16px;
            }

            .ethics-card {
                padding: 40px 24px 32px;
            }

            .ethics-card::before,
            .ethics-card::after {
                width: 28px;
                height: 28px;
            }

            .ethics-icon {
                width: 56px;
                height: 56px;
                margin-bottom: 18px;
            }

            .ethics-icon svg {
                width: 34px;
                height: 34px;
            }

            .ethics-kicker {
                font-size: 10px;
                letter-spacing: 3px;
            }

            .ethics-title {
                font-size: 26px !important;
                margin-bottom: 28px !important;
            }

            .ethics-lead {
                font-size: 15px;
                margin-bottom: 24px;
            }

            .ethics-axioms {
                padding: 18px 20px;
                margin-bottom: 28px;
            }

            .ethics-axiom {
                font-size: 13.5px;
                gap: 10px;
            }

            .ethics-metaphor {
                font-size: 14.5px;
                margin: 28px 0;
            }

            .ethics-verdict {
                padding: 18px 20px;
                margin-bottom: 28px;
            }

            .ethics-verdict p {
                font-size: 15px;
            }

            .ethics-audience {
                font-size: 13px;
                margin-bottom: 24px;
            }

            .ethics-choice {
                font-size: 13px;
                padding: 12px 16px;
                gap: 10px;
            }

            .choice-mark {
                width: 22px;
                height: 22px;
                font-size: 12px;
            }
        }

        @media (max-width: 420px) {
            .ethics-card {
                padding: 32px 18px 26px;
            }

            .ethics-title {
                font-size: 22px !important;
            }

            .ethics-lead {
                font-size: 14px;
            }

            .ethics-metaphor {
                font-size: 13.5px;
                line-height: 1.7;
            }
        }

        /* ==================================================================
           ORDER FORM — EDITORIAL PALETTE OVERRIDE
           Xóa hết tông vàng/đỏ cũ còn sót, dùng navy + teal + coral + crimson
           ================================================================== */

        /* Tiêu đề "Hoàn tất thanh toán" — trắng tinh */
        .order-form h3 {
            color: #ffffff !important;
            font-weight: 800 !important;
            letter-spacing: -0.02em !important;
        }

        .order-form .form-subtitle {
            color: rgba(191, 215, 234, 0.7) !important;
            border-bottom-color: rgba(191, 215, 234, 0.1) !important;
        }

        /* Close button X — navy pastel */
        .order-form-close {
            color: var(--pastel) !important;
            font-size: 24px !important;
            width: 32px !important;
            height: 32px !important;
            border-radius: 50% !important;
            display: flex !important;
            align-items: center !important;
            justify-content: center !important;
            transition: all 0.25s ease !important;
        }

        .order-form-close:hover {
            color: var(--coral) !important;
            background: rgba(255, 90, 95, 0.1) !important;
        }

        /* Box ngân hàng — navy thay vàng cổ */
        .order-form .form-bank {
            background: linear-gradient(135deg, rgba(11, 57, 84, 0.5), rgba(10, 20, 32, 0.6)) !important;
            border: 1px solid rgba(8, 126, 139, 0.3) !important;
            border-radius: 4px !important;
        }

        .order-form .form-bank-info .bank-name {
            color: #ffffff !important;
            font-weight: 700 !important;
        }

        .order-form .form-bank-info .bank-owner {
            color: rgba(191, 215, 234, 0.6) !important;
        }

        /* Số tài khoản — trắng sáng thay vàng cũ */
        .order-form .form-bank-stk {
            color: #ffffff !important;
            -webkit-text-fill-color: #ffffff !important;
        }

        /* Nút "Sao chép" */
        .order-form .copy-btn {
            background: rgba(8, 126, 139, 0.2) !important;
            border: 1px solid rgba(8, 126, 139, 0.4) !important;
            color: var(--pastel) !important;
            border-radius: 3px !important;
            padding: 4px 10px !important;
            font-size: 11px !important;
            cursor: pointer !important;
            transition: all 0.2s ease !important;
        }

        .order-form .copy-btn:hover {
            background: var(--teal) !important;
            border-color: var(--teal) !important;
            color: #ffffff !important;
        }

        /* Labels — pastel */
        .order-form label {
            color: var(--pastel) !important;
            opacity: 0.75 !important;
        }

        /* Input text/email — viền pastel */
        .order-form input[type="email"],
        .order-form input[type="text"] {
            background: rgba(10, 20, 32, 0.7) !important;
            border: 1px solid rgba(191, 215, 234, 0.1) !important;
            color: var(--text) !important;
            border-radius: 3px !important;
        }

        /* Input readonly (Tài liệu, Giá) — teal thay vàng */
        .order-form input[readonly] {
            color: var(--pastel) !important;
            opacity: 1 !important;
            border-color: rgba(8, 126, 139, 0.25) !important;
            background: rgba(11, 57, 84, 0.25) !important;
        }

        /* Focus states */
        .order-form input[type="email"]:focus,
        .order-form input[type="text"]:focus,
        .order-form textarea:focus {
            border-color: var(--coral) !important;
            outline: none !important;
        }

        /* ========== EMAIL VALIDATION STATES ========== */
        /* Hợp lệ: viền teal + icon check bên phải */
        .order-form input#userEmail.is-valid {
            border-color: var(--teal2) !important;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%230A96A6' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") !important;
            background-repeat: no-repeat !important;
            background-position: right 12px center !important;
            background-size: 18px 18px !important;
            padding-right: 40px !important;
            box-shadow: 0 0 0 3px rgba(10, 150, 166, 0.1) !important;
        }

        .order-form input#userEmail.is-valid:focus {
            border-color: var(--teal) !important;
            box-shadow: 0 0 0 3px rgba(8, 126, 139, 0.2) !important;
        }

        /* Không hợp lệ: viền coral + icon X */
        .order-form input#userEmail.is-invalid {
            border-color: var(--coral) !important;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%23FF5A5F' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='18' y1='6' x2='6' y2='18'/%3E%3Cline x1='6' y1='6' x2='18' y2='18'/%3E%3C/svg%3E") !important;
            background-repeat: no-repeat !important;
            background-position: right 12px center !important;
            background-size: 18px 18px !important;
            padding-right: 40px !important;
            box-shadow: 0 0 0 3px rgba(255, 90, 95, 0.1) !important;
        }

        .order-form input#userEmail.is-invalid:focus {
            border-color: var(--coral) !important;
            box-shadow: 0 0 0 3px rgba(255, 90, 95, 0.2) !important;
        }

        /* Email error text — dùng màu coral thay vì đỏ chu cũ */
        #emailError {
            color: var(--coral) !important;
        }

        /* File upload label */
        .order-form .file-label {
            background: rgba(10, 20, 32, 0.7) !important;
            border: 1px dashed rgba(191, 215, 234, 0.2) !important;
            color: var(--pastel) !important;
            transition: all 0.25s ease !important;
        }

        .order-form .file-label:not(.is-valid):hover {
            border-color: var(--coral) !important;
            background: rgba(255, 90, 95, 0.05) !important;
        }

        /* [NEW] File label — VALID state (đã upload ảnh) → teal/xanh giống email */
        .order-form .file-label.is-valid {
            border: 1px solid var(--teal2) !important;
            background: rgba(10, 150, 166, 0.08) !important;
            color: var(--teal2) !important;
            box-shadow: 0 0 0 3px rgba(10, 150, 166, 0.1) !important;
        }

        .order-form .file-label.is-valid svg {
            stroke: var(--teal2) !important;
        }

        .order-form .file-label.is-valid:hover {
            border-color: var(--teal) !important;
            background: rgba(8, 126, 139, 0.12) !important;
        }

        /* SUBMIT BUTTON — NEUTRAL GRAY by default, CRIMSON + pulse when .is-ready */
        .order-form .btn-submit {
            background: linear-gradient(180deg, rgba(120, 135, 155, 0.22) 0%, rgba(70, 85, 105, 0.22) 100%) !important;
            box-shadow:
                0 0 0 1px rgba(180, 200, 220, 0.14),
                0 4px 12px rgba(0, 0, 0, 0.18) !important;
            border: 1px solid rgba(180, 200, 220, 0.22) !important;
            color: rgba(230, 240, 250, 0.75) !important;
            filter: saturate(0.9);
            transition: all 0.4s ease, filter 0.4s ease, transform 0.2s ease;
        }

        /* ACTIVE / READY — bật sáng rực; pulse 3 lần rồi đứng yên */
        .order-form .btn-submit.is-ready {
            background: linear-gradient(180deg, var(--coral) 0%, var(--crimson) 100%) !important;
            box-shadow:
                0 0 0 1px var(--coral),
                0 10px 30px rgba(255, 90, 95, 0.55),
                0 0 22px rgba(255, 90, 95, 0.35) !important;
            border: 1px solid var(--coral) !important;
            color: #fff !important;
            filter: saturate(1) brightness(1.02);
            /* Pulse 3 lần (~4.8s) rồi dừng — tránh cảm giác thúc ép */
            animation: btnReadyPulse 1.6s ease-in-out 3;
        }

        @keyframes btnReadyPulse {

            0%,
            100% {
                box-shadow:
                    0 0 0 0 rgba(255, 90, 95, 0.55),
                    0 10px 28px rgba(255, 90, 95, 0.45),
                    0 0 18px rgba(255, 90, 95, 0.35);
            }

            50% {
                box-shadow:
                    0 0 0 10px rgba(255, 90, 95, 0),
                    0 14px 38px rgba(255, 90, 95, 0.65),
                    0 0 28px rgba(255, 90, 95, 0.5);
            }
        }

        /* Accessibility — tôn trọng prefers-reduced-motion */
        @media (prefers-reduced-motion: reduce) {

            .order-form .btn-submit,
            .order-form .btn-submit.is-ready {
                animation: none !important;
                transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease !important;
            }
        }

        /* Helper hint bên dưới nút — chỉ hiện khi chưa ready */
        .order-form .submit-hint {
            font-size: 11px;
            color: rgba(191, 215, 234, 0.55);
            text-align: center;
            margin: 8px 0 0;
            letter-spacing: 0.3px;
            transition: opacity 0.3s ease, max-height 0.3s ease, margin 0.3s ease;
            max-height: 40px;
            overflow: hidden;
        }

        /* Ẩn hint khi submit đã ready (sibling selector) */
        .order-form .btn-submit.is-ready+.submit-hint,
        .order-form .btn-submit.is-ready~.submit-hint {
            opacity: 0;
            max-height: 0;
            margin: 0;
            pointer-events: none;
        }

        .order-form .btn-submit:hover,
        .order-form .btn-submit.is-ready:hover {
            background: linear-gradient(180deg, var(--coral-soft) 0%, var(--coral) 100%) !important;
            box-shadow:
                0 0 0 1px var(--coral),
                0 14px 36px rgba(255, 90, 95, 0.6) !important;
            filter: saturate(1) brightness(1.08);
        }

        .order-form .btn-submit.is-ready:active {
            transform: translateY(1px);
        }

        /* Form note dưới submit */
        .order-form .form-note {
            color: rgba(191, 215, 234, 0.5) !important;
        }

        /* Success state */
        .order-form .form-success h4 {
            color: var(--coral) !important;
        }

        .order-form .form-success p strong {
            color: #ffffff !important;
        }

        /* Textarea ghi chú — fix luôn màu viền focus */
        .order-form textarea {
            background: rgba(10, 20, 32, 0.7) !important;
            border: 1px solid rgba(191, 215, 234, 0.1) !important;
            color: var(--text) !important;
        }

        /* Overlay backdrop — đậm navy */
        .order-form-overlay {
            background: rgba(2, 5, 10, 0.92) !important;
            backdrop-filter: blur(10px) !important;
            -webkit-backdrop-filter: blur(10px) !important;
        }

        /* Box form chính */
        .order-form {
            background: linear-gradient(180deg, #0a1420 0%, #050a12 100%) !important;
            border: 1px solid rgba(8, 126, 139, 0.25) !important;
            border-radius: 6px !important;
            box-shadow:
                0 0 0 1px rgba(255, 90, 95, 0.08),
                0 30px 80px rgba(0, 0, 0, 0.7) !important;
        }

/* [NEW] Giá cố định trên card donate (thay nhãn "Donate · Tự định giá") */
        .donate-price {
            font-size: 20px;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.3px;
        }

/* ============================================================
   [NEW] MÀN HÌNH THANH TOÁN RIÊNG — QR to
   ============================================================ */
        #payPanel { text-align: center; }
        .pay-qr-big {
            width: 220px; height: 220px;
            margin: 0 auto 20px;
            background: #fff;
            border-radius: 14px;
            padding: 10px;
            box-shadow: 0 8px 28px rgba(0,0,0,0.4);
        }
        .pay-qr-big img { width: 100%; height: 100%; object-fit: contain; display: block; }

        .pay-details {
            text-align: left;
            border: 1px solid var(--border, rgba(180,143,224,0.15));
            border-radius: 12px;
            padding: 6px 14px;
            margin-bottom: 18px;
            background: rgba(255,255,255,0.02);
        }
        .pay-row {
            display: flex; align-items: center; justify-content: space-between;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border, rgba(180,143,224,0.1));
            font-size: 13.5px;
        }
        .pay-row:last-child { border-bottom: none; }
        .pay-k { color: var(--muted, #8f86a0); flex: 0 0 auto; }
        .pay-v { color: var(--text, #ECE7F2); font-weight: 600; text-align: right; word-break: break-word; }
        .pay-amount-row .pay-amount {
            color: var(--crimson, #9E2BE0);
            font-size: 20px; font-weight: 800;
        }
        .pay-copy {
            font-size: 10px; padding: 2px 8px; margin-left: 6px;
            border: 1px solid var(--border2, rgba(180,143,224,0.35));
            background: transparent; color: var(--teal, #b48fe0);
            border-radius: 6px; cursor: pointer;
        }
        .pay-copy:hover { color: #fff; }

        .pay-waiting {
            display: flex; align-items: center; justify-content: center; gap: 10px;
            font-size: 14px; font-weight: 600; color: var(--teal, #b48fe0);
            margin-bottom: 14px;
        }
        .pay-spinner {
            width: 16px; height: 16px; border-radius: 50%;
            border: 2px solid rgba(180,143,224,0.3);
            border-top-color: var(--teal, #b48fe0);
            animation: paySpin 0.8s linear infinite;
        }
        @keyframes paySpin { to { transform: rotate(360deg); } }

        @media (max-width: 480px) {
            .pay-qr-big { width: 190px; height: 190px; }
            .pay-row { font-size: 13px; }
        }

/* [NEW] Đồng hồ đếm ngược trên màn thanh toán */
        .pay-countdown {
            text-align: center;
            font-size: 13px;
            color: var(--muted, #8f86a0);
            margin-bottom: 6px;
        }
        .pay-countdown strong {
            color: var(--coral, #FF5A5F);
            font-variant-numeric: tabular-nums;
            font-size: 15px;
            letter-spacing: 0.5px;
        }
        .pay-countdown.expired strong { color: #e74c3c; }