/* roulang page: index */
:root {
            --primary: #7b5cff;
            --accent: #00e0ff;
            --danger-soft: #ff3d81;
            --bg-page: #0b0e1a;
            --bg-section: #0d1120;
            --bg-card: #131a2e;
            --bg-deep: #070a14;
            --text-main: #eef1fb;
            --text-muted: #98a3c0;
            --border: rgba(255, 255, 255, 0.08);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow: 0 18px 48px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 44px rgba(123, 92, 255, 0.22);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 90px;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Inter", system-ui, -apple-system, sans-serif;
            background: var(--bg-page);
            color: var(--text-main);
            line-height: 1.7;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

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

        img {
            max-width: 100%;
            display: block;
        }

        ul,
        ol {
            list-style: none;
        }

        button,
        input,
        textarea {
            font-family: inherit;
        }

        ::selection {
            background: rgba(123, 92, 255, 0.4);
        }

        .container {
            max-width: 1200px;
        }

        .section-pad {
            padding: 96px 0;
        }

        .bg-section {
            background: var(--bg-section);
        }

        .section-head {
            margin-bottom: 48px;
        }

        .section-head.text-center p {
            margin-left: auto;
            margin-right: auto;
        }

        .eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 3px;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 10px;
        }

        .section-head h2 {
            font-size: clamp(28px, 3.6vw, 40px);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 560px;
        }

        .navbar-custom {
            background: rgba(9, 12, 22, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
        }

        .navbar-custom .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
        }

        .brand-mark {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            color: #fff;
            letter-spacing: 0.5px;
            box-shadow: 0 8px 24px rgba(123, 92, 255, 0.4);
        }

        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.15;
        }

        .brand-text strong {
            font-size: 18px;
            font-weight: 800;
            letter-spacing: 0.3px;
        }

        .brand-text small {
            font-size: 11px;
            color: var(--text-muted);
            letter-spacing: 1.5px;
            margin-top: 3px;
        }

        .navbar-custom .nav-link {
            color: var(--text-muted);
            font-weight: 500;
            padding: 9px 18px !important;
            border-radius: 12px;
            font-size: 15px;
        }

        .navbar-custom .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .navbar-custom .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(123, 92, 255, 0.22), rgba(0, 224, 255, 0.1));
            box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
        }

        .btn {
            border-radius: 14px;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-glow {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border: none;
            color: #fff;
            box-shadow: 0 12px 30px rgba(123, 92, 255, 0.35);
        }

        .btn-glow:hover,
        .btn-glow:focus {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 16px 38px rgba(0, 224, 255, 0.35);
        }

        .btn-glow:active {
            transform: translateY(0);
        }

        .btn-outline-glow {
            border: 1px solid rgba(255, 255, 255, 0.16);
            color: #fff;
            background: rgba(255, 255, 255, 0.03);
        }

        .btn-outline-glow:hover,
        .btn-outline-glow:focus {
            border-color: var(--accent);
            color: #fff;
            background: rgba(0, 224, 255, 0.08);
        }

        .btn-lg {
            padding: 14px 32px;
        }

        .btn-sm {
            padding: 10px 18px;
            font-size: 14px;
        }

        .hero-section {
            position: relative;
            padding: 140px 0 120px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(7, 10, 20, 0.88) 0%, rgba(7, 10, 20, 0.62) 50%, rgba(11, 14, 26, 0.4) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 13px;
            color: #cdd4ec;
            backdrop-filter: blur(10px);
        }

        .live-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #22e584;
            box-shadow: 0 0 0 4px rgba(34, 229, 132, 0.22);
            animation: pulse-dot 1.8s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 4px rgba(34, 229, 132, 0.22);
            }
            50% {
                box-shadow: 0 0 0 8px rgba(34, 229, 132, 0.08);
            }
        }

        .hero-section h1 {
            font-size: clamp(38px, 5.8vw, 62px);
            font-weight: 800;
            line-height: 1.12;
            letter-spacing: -1px;
            margin: 24px 0 20px;
        }

        .gradient-text {
            background: linear-gradient(90deg, #b9a0ff, var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .hero-desc {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 560px;
            margin-bottom: 30px;
        }

        .hero-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 36px;
            margin-top: 42px;
        }

        .hero-metric strong {
            display: block;
            font-size: 28px;
            font-weight: 800;
            background: linear-gradient(90deg, #fff, #aab4d9);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .hero-metric span {
            font-size: 13px;
            color: var(--text-muted);
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 34px;
            height: 100%;
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-8px);
            border-color: rgba(123, 92, 255, 0.5);
            box-shadow: var(--shadow);
        }

        .icon-box {
            width: 54px;
            height: 54px;
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 22px;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            box-shadow: 0 12px 28px rgba(123, 92, 255, 0.35);
        }

        .feature-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .feature-card p {
            color: var(--text-muted);
            font-size: 14px;
            margin: 0;
        }

        .cat-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            transition: var(--transition);
        }

        .cat-card:hover {
            transform: translateY(-8px);
            border-color: rgba(0, 224, 255, 0.4);
            box-shadow: var(--shadow-glow);
        }

        .cat-card-img {
            position: relative;
            height: 190px;
            background-size: cover;
            background-position: center;
        }

        .cat-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(7, 10, 20, 0.72));
        }

        .cat-card-body {
            padding: 28px;
        }

        .cat-card-body h3 {
            font-size: 22px;
            font-weight: 700;
        }

        .cat-card-body p {
            color: var(--text-muted);
            font-size: 14px;
            margin: 12px 0 22px;
        }

        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            height: 100%;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-6px);
            border-color: rgba(123, 92, 255, 0.45);
            box-shadow: var(--shadow);
        }

        .news-body {
            padding: 26px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 12px;
        }

        .news-body h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.5;
        }

        .news-body h3 a {
            color: var(--text-main);
        }

        .news-body h3 a:hover {
            color: var(--accent);
        }

        .news-excerpt {
            color: var(--text-muted);
            font-size: 14px;
            margin-top: 10px;
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .badge-soft {
            display: inline-block;
            background: rgba(123, 92, 255, 0.14);
            color: #bdaaff;
            border-radius: 100px;
            padding: 4px 13px;
            font-size: 12px;
            font-weight: 600;
        }

        .empty-state {
            background: var(--bg-card);
            border: 1px dashed rgba(255, 255, 255, 0.14);
            border-radius: var(--radius-md);
            padding: 52px;
            text-align: center;
            color: var(--text-muted);
        }

        .flow-section {
            position: relative;
            padding: 96px 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
        }

        .flow-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(7, 10, 20, 0.86);
        }

        .flow-section .container {
            position: relative;
            z-index: 2;
        }

        .flow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-item {
            background: rgba(19, 26, 46, 0.9);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
        }

        .step-item:hover {
            border-color: rgba(0, 224, 255, 0.4);
            transform: translateY(-6px);
        }

        .step-num {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            margin: 0 auto 16px;
            box-shadow: 0 10px 24px rgba(123, 92, 255, 0.35);
        }

        .step-item h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .step-item p {
            color: var(--text-muted);
            font-size: 13px;
            margin: 0;
        }

        .stats-section {
            background: var(--bg-deep);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 56px 0;
        }

        .stat-block strong {
            font-size: 38px;
            font-weight: 800;
            display: block;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .stat-block span {
            color: var(--text-muted);
            font-size: 14px;
        }

        .accordion-item {
            background: var(--bg-card) !important;
            border: 1px solid var(--border) !important;
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            overflow: hidden;
        }

        .accordion-button {
            background: var(--bg-card);
            color: var(--text-main);
            font-weight: 600;
            font-size: 16px;
            padding: 22px 26px;
            box-shadow: none !important;
            border-radius: 0 !important;
        }

        .accordion-button:not(.collapsed) {
            color: #fff;
            background: rgba(123, 92, 255, 0.1) !important;
        }

        .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }

        .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23eef1fb'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
        }

        .accordion-body {
            color: var(--text-muted);
            padding: 0 26px 24px;
            font-size: 14px;
        }

        .cta-section {
            position: relative;
            padding: 100px 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        }

        .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(7, 10, 20, 0.92), rgba(11, 14, 26, 0.74));
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: clamp(28px, 3.6vw, 42px);
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-inner p {
            color: var(--text-muted);
            font-size: 16px;
            margin-bottom: 30px;
        }

        .footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border);
            padding: 64px 0 0;
        }

        .footer .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .footer p.text-muted {
            font-size: 14px;
            max-width: 360px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            color: #fff;
        }

        .footer-links a {
            display: block;
            padding: 7px 0;
            color: var(--text-muted);
            font-size: 14px;
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 5px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            margin-top: 48px;
            padding: 24px 0;
            text-align: center;
            color: var(--text-muted);
            font-size: 13px;
        }

        .footer-bottom p {
            margin: 0;
        }

        .mobile-tabbar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1040;
            display: none;
            background: rgba(10, 13, 24, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--border);
            padding: 8px 0 calc(8px + env(safe-area-inset-bottom));
            justify-content: space-around;
        }

        .tab-item {
            color: var(--text-muted);
            text-align: center;
            font-size: 11px;
            flex: 1;
            padding: 4px 0;
            border-radius: 12px;
        }

        .tab-item i {
            display: block;
            font-size: 19px;
            margin-bottom: 3px;
        }

        .tab-item span {
            font-weight: 500;
        }

        .tab-item:hover,
        .tab-item.active {
            color: #fff;
        }

        .tab-item.active {
            color: var(--accent);
        }

        @media (max-width: 991.98px) {
            .mobile-tabbar {
                display: flex;
            }

            body {
                padding-bottom: 76px;
            }

            .navbar-custom .nav-link {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .section-pad {
                padding: 64px 0;
            }

            .hero-section {
                padding: 96px 0 80px;
            }

            .hero-metrics {
                gap: 22px;
            }

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

            .stats-section {
                padding: 40px 0;
            }
        }

        @media (max-width: 520px) {
            .hero-section h1 {
                font-size: 34px;
            }

            .brand-text small {
                display: none;
            }

            .section-head h2 {
                font-size: 26px;
            }

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

            .hero-metrics {
                gap: 16px;
                justify-content: space-between;
            }

            .btn-lg {
                padding: 12px 24px;
                font-size: 15px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #6c5ce7;
            --primary-light: #a29bfe;
            --primary-dark: #4834d4;
            --accent: #00d2d3;
            --accent-2: #fdcb6e;
            --dark-bg: #080c1a;
            --dark-panel: #101830;
            --dark-panel-2: #0c1428;
            --text-main: #f0f3ff;
            --text-muted: #8a93b2;
            --border-color: rgba(255, 255, 255, 0.09);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-main: 0 20px 50px rgba(0, 0, 0, 0.45);
            --shadow-card: 0 15px 40px rgba(0, 0, 0, 0.3);
            --transition: all 0.3s ease;
            --body-bg: #080c1a;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--body-bg);
            color: var(--text-main);
            line-height: 1.7;
            padding-bottom: 70px;
            -webkit-font-smoothing: antialiased;
        }

        @media (min-width: 992px) {
            body {
                padding-bottom: 0;
            }
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: #fff;
        }

        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-md);
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding: 80px 0;
        }

        @media (max-width: 767px) {
            .section {
                padding: 50px 0;
            }
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(108, 92, 231, 0.12);
            border: 1px solid rgba(108, 92, 231, 0.3);
            color: var(--primary-light);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            padding: 6px 18px;
            border-radius: 40px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        @media (max-width: 767px) {
            .section-title {
                font-size: 24px;
            }
        }

        .section-subtext {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 640px;
        }

        /* ===== Header ===== */
        .navbar-custom {
            background: rgba(8, 12, 26, 0.9);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
        }

        .navbar-custom .navbar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, #6c5ce7, #00d2d3);
            border-radius: 12px;
            font-weight: 900;
            font-size: 16px;
            color: #fff;
            letter-spacing: -0.5px;
            box-shadow: 0 8px 20px rgba(108, 92, 231, 0.4);
        }

        .brand-text strong {
            display: block;
            font-size: 17px;
            font-weight: 800;
            line-height: 1.3;
            color: #fff;
            letter-spacing: 0.3px;
        }

        .brand-text small {
            display: block;
            font-size: 11px;
            color: var(--text-muted);
            letter-spacing: 1px;
        }

        .navbar-custom .nav-link {
            color: var(--text-muted);
            font-weight: 500;
            font-size: 15px;
            padding: 9px 18px;
            border-radius: 40px;
            transition: var(--transition);
        }

        .navbar-custom .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
        }

        .navbar-custom .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 6px 20px rgba(108, 92, 231, 0.35);
        }

        .btn-glow {
            background: linear-gradient(135deg, #6c5ce7, #4834d4);
            color: #fff;
            border: none;
            border-radius: 40px;
            font-weight: 600;
            padding: 10px 24px;
            box-shadow: 0 8px 25px rgba(108, 92, 231, 0.35);
            transition: var(--transition);
        }

        .btn-glow:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(108, 92, 231, 0.5);
            color: #fff;
        }

        .btn-outline-light-custom {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #fff;
            border-radius: 40px;
            padding: 10px 24px;
            font-weight: 500;
            transition: var(--transition);
        }

        .btn-outline-light-custom:hover {
            border-color: var(--primary-light);
            color: var(--primary-light);
            background: rgba(108, 92, 231, 0.1);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            background-image: linear-gradient(rgba(8, 12, 26, 0.8), rgba(8, 12, 26, 0.92)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 90px 0 70px;
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: 50%;
            transform: translateX(-50%);
            width: 90%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(108, 92, 231, 0.6), transparent);
        }

        .page-hero .breadcrumb {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            display: inline-flex;
            padding: 8px 20px;
            border-radius: 40px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .page-hero .breadcrumb a {
            color: var(--primary-light);
        }

        .page-hero h1 {
            font-size: 42px;
            font-weight: 900;
            letter-spacing: -1px;
            line-height: 1.2;
            margin-bottom: 16px;
        }

        @media (max-width: 767px) {
            .page-hero h1 {
                font-size: 28px;
            }
        }

        .page-hero .lead-text {
            color: var(--text-muted);
            font-size: 17px;
            max-width: 680px;
            margin-bottom: 0;
        }

        .hero-badges {
            margin-top: 28px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .hero-badges .badge-custom {
            background: rgba(0, 210, 211, 0.12);
            border: 1px solid rgba(0, 210, 211, 0.3);
            color: #00d2d3;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* ===== Quick Card ===== */
        .quick-card {
            background: var(--dark-panel);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .quick-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

        .quick-card:hover {
            transform: translateY(-6px);
            background: var(--dark-panel-2);
            box-shadow: var(--shadow-card);
            border-color: rgba(108, 92, 231, 0.3);
        }

        .quick-card:hover::before {
            opacity: 1;
        }

        .quick-card .icon-wrap {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.2), rgba(0, 210, 211, 0.2));
            color: var(--accent);
            margin-bottom: 18px;
        }

        .quick-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }

        .quick-card p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ===== Steps ===== */
        .steps-section {
            background: var(--dark-panel-2);
            border-radius: var(--radius-lg);
            padding: 45px;
            margin: 30px 0;
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        @media (max-width: 767px) {
            .steps-section {
                padding: 30px 20px;
            }
        }

        .step-item {
            position: relative;
            padding-left: 28px;
        }

        .step-item::before {
            content: '';
            position: absolute;
            left: 6px;
            top: 10px;
            bottom: -10px;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), rgba(108, 92, 231, 0.1));
        }

        .step-item:last-child::before {
            display: none;
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            border-radius: 50%;
            font-weight: 800;
            font-size: 15px;
            margin-bottom: 14px;
            box-shadow: 0 6px 18px rgba(108, 92, 231, 0.4);
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .step-item p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.65;
        }

        /* ===== Feature Cards ===== */
        .feature-card {
            background: var(--dark-panel);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-8px);
            border-color: rgba(108, 92, 231, 0.35);
            box-shadow: var(--shadow-card);
        }

        .feature-card .feature-img {
            height: 190px;
            overflow: hidden;
            position: relative;
        }

        .feature-card .feature-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .feature-card:hover .feature-img img {
            transform: scale(1.05);
        }

        .feature-card .feature-img::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 60px;
            background: linear-gradient(180deg, transparent, rgba(16, 24, 48, 0.95));
        }

        .feature-card .feature-body {
            padding: 26px;
        }

        .feature-card .feature-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .feature-card .feature-body p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 14px;
        }

        .feature-card .feature-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            background: rgba(0, 210, 211, 0.1);
            color: var(--accent);
            border: 1px solid rgba(0, 210, 211, 0.25);
            padding: 4px 12px;
            border-radius: 30px;
        }

        /* ===== Safety Panel ===== */
        .safety-panel {
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.12), rgba(0, 210, 211, 0.06));
            border: 1px solid rgba(108, 92, 231, 0.25);
            border-radius: var(--radius-lg);
            padding: 34px;
            height: 100%;
        }

        @media (max-width: 767px) {
            .safety-panel {
                padding: 24px 20px;
            }
        }

        .safety-panel .icon-lg {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            font-size: 18px;
            background: linear-gradient(135deg, var(--accent-2), #e17055);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
        }

        .safety-panel h3 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .safety-panel p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 0;
            line-height: 1.65;
        }

        .safety-list {
            list-style: none;
            padding: 0;
            margin: 20px 0 0;
        }

        .safety-list li {
            padding: 9px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            color: var(--text-muted);
            font-size: 14px;
            display: flex;
            gap: 10px;
            align-items: flex-start;
        }

        .safety-list li:last-child {
            border-bottom: none;
        }

        .safety-list li i {
            color: var(--accent);
            margin-top: 4px;
        }

        /* ===== News List ===== */
        .news-item {
            display: flex;
            gap: 20px;
            background: var(--dark-panel);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            margin-bottom: 14px;
            transition: var(--transition);
        }

        .news-item:hover {
            border-color: rgba(108, 92, 231, 0.4);
            background: var(--dark-panel-2);
            transform: translateX(4px);
        }

        .news-item .news-icon {
            width: 44px;
            height: 44px;
            min-width: 44px;
            border-radius: 12px;
            background: rgba(108, 92, 231, 0.15);
            color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
        }

        .news-item .news-content h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 4px;
            color: #fff;
        }

        .news-item .news-content p {
            color: var(--text-muted);
            font-size: 13px;
            margin-bottom: 6px;
        }

        .news-item .news-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            gap: 14px;
        }

        .news-item .news-meta i {
            color: var(--accent);
            margin-right: 4px;
        }

        /* ===== FAQ ===== */
        .faq-section .accordion-item {
            background: var(--dark-panel);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
        }

        .faq-section .accordion-button {
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            padding: 18px 22px;
            box-shadow: none;
            border: none;
        }

        .faq-section .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23a29bfe'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
        }

        .faq-section .accordion-button:not(.collapsed) {
            background: rgba(108, 92, 231, 0.08);
            color: var(--primary-light);
        }

        .faq-section .accordion-body {
            color: var(--text-muted);
            font-size: 14px;
            padding: 0 22px 20px;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(120deg, rgba(108, 92, 231, 0.15), rgba(0, 210, 211, 0.1));
            border: 1px solid rgba(108, 92, 231, 0.3);
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        @media (max-width: 767px) {
            .cta-section {
                padding: 36px 20px;
            }
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(108, 92, 231, 0.25), transparent 70%);
            border-radius: 50%;
        }

        .cta-section h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 14px;
            position: relative;
        }

        @media (max-width: 767px) {
            .cta-section h2 {
                font-size: 22px;
            }
        }

        .cta-section p {
            color: var(--text-muted);
            max-width: 500px;
            margin: 0 auto 24px;
            font-size: 15px;
            position: relative;
        }

        /* ===== Footer ===== */
        .footer {
            background: #05070f;
            border-top: 1px solid var(--border-color);
            padding: 70px 0 40px;
            margin-top: 30px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand .brand-mark {
            width: 38px;
            height: 38px;
            font-size: 14px;
        }

        .footer p.text-muted {
            font-size: 14px;
            line-height: 1.7;
            max-width: 360px;
            color: var(--text-muted) !important;
        }

        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            color: var(--text-muted);
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            margin-top: 40px;
            padding-top: 24px;
            text-align: center;
        }

        .footer-bottom p {
            color: var(--text-muted);
            font-size: 13px;
            margin-bottom: 0;
        }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-bottom-tab {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1040;
            background: rgba(8, 12, 26, 0.96);
            backdrop-filter: blur(16px);
            border-top: 1px solid var(--border-color);
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding: 8px 10px 10px;
        }

        @media (min-width: 992px) {
            .mobile-bottom-tab {
                display: none;
            }
        }

        .mobile-bottom-tab .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            font-size: 11px;
            color: var(--text-muted);
            padding: 6px 12px;
            border-radius: 12px;
            transition: var(--transition);
        }

        .mobile-bottom-tab .tab-item i {
            font-size: 18px;
        }

        .mobile-bottom-tab .tab-item:hover,
        .mobile-bottom-tab .tab-item.active {
            color: var(--primary-light);
            background: rgba(108, 92, 231, 0.1);
        }

        .mobile-bottom-tab .tab-item.active i {
            color: var(--accent);
        }

        .mobile-bottom-tab .tab-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff !important;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 12px;
            font-weight: 600;
            flex-direction: row;
            gap: 6px;
            box-shadow: 0 6px 18px rgba(108, 92, 231, 0.35);
        }

        /* ===== Utilities ===== */
        .text-gradient {
            background: linear-gradient(120deg, #a29bfe, #00d2d3);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .bg-panel {
            background: var(--dark-panel);
        }

        .divide-line {
            width: 50px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            margin-bottom: 20px;
        }

        section[id] {
            scroll-margin-top: 90px;
        }

        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        @media (max-width: 991px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 600px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
        }

        .row.g-4 > [class*="col-"] {
            margin-bottom: 0;
        }

        @media (max-width: 767px) {
            .row.g-4 > [class*="col-"] {
                margin-bottom: 0;
            }
        }

        .btn:focus,
        a:focus {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .navbar-custom .btn:focus {
            outline-color: var(--primary-light);
        }

/* roulang page: article */
:root {
            --primary: #7c3aed;
            --primary-light: #a78bfa;
            --primary-dark: #5b21b6;
            --accent: #d946ef;
            --accent-light: #f0abfc;
            --bg-dark: #0a0a1a;
            --bg-darker: #060612;
            --bg-card: #12122a;
            --bg-card-light: #1a1a3a;
            --border-dark: #2d2d5e;
            --text-light: #f5f3ff;
            --text-muted: #a1a1c0;
            --text-dim: #7171a0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 30px rgba(124, 58, 237, 0.25);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 100px;
        }

        body {
            font-family: 'Noto Sans SC', 'Inter', sans-serif;
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.8;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        img {
            max-width: 100%;
            height: auto;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            padding: 0 24px;
        }

        .navbar-custom {
            background: rgba(10, 10, 26, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: 80px;
            padding: 0 0;
        }

        .navbar-custom .container {
            height: 100%;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            min-width: max-content;
        }

        .brand-mark {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 12px;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 16px;
            letter-spacing: -1px;
            color: #fff;
            box-shadow: 0 0 25px rgba(124, 58, 237, 0.4);
        }

        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .brand-text strong {
            font-size: 18px;
            font-weight: 800;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .brand-text small {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 1px;
        }

        .nav-link {
            color: var(--text-muted) !important;
            font-weight: 500;
            padding: 8px 16px !important;
            border-radius: 50px;
            font-size: 14px;
            position: relative;
            transition: var(--transition);
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--text-light) !important;
            background: rgba(124, 58, 237, 0.15);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
        }

        .btn-glow {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            color: #fff !important;
            border: none;
            border-radius: 50px;
            font-weight: 600;
            padding: 10px 25px;
            box-shadow: 0 4px 20px rgba(124, 58, 237, 0.4);
            transition: var(--transition);
            white-space: nowrap;
            font-size: 14px;
        }

        .btn-glow:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 35px rgba(124, 58, 237, 0.6);
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--accent) 100%);
        }

        .btn-glow:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.5);
        }

        .btn-outline-glow {
            background: transparent;
            color: var(--text-light);
            border: 1px solid rgba(124, 58, 237, 0.5);
            border-radius: 50px;
            padding: 10px 25px;
            font-weight: 500;
            transition: var(--transition);
        }

        .btn-outline-glow:hover {
            background: rgba(124, 58, 237, 0.15);
            border-color: var(--primary-light);
            box-shadow: 0 0 20px rgba(124, 58, 237, 0.2);
        }

        .page-banner {
            background: linear-gradient(rgba(10, 10, 26, 0.75), rgba(6, 6, 18, 0.9)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 80px 0 60px;
            position: relative;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at top right, rgba(124, 58, 237, 0.15), transparent 60%);
        }

        .page-banner h1 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .page-banner .breadcrumb {
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50px;
            padding: 8px 20px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            position: relative;
            z-index: 1;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .page-banner .breadcrumb a {
            color: var(--text-muted);
            transition: var(--transition);
        }

        .page-banner .breadcrumb a:hover {
            color: var(--primary-light);
        }

        .page-banner .breadcrumb .separator {
            font-size: 12px;
            color: var(--text-dim);
        }

        .page-banner .breadcrumb .current {
            color: var(--text-light);
            font-weight: 500;
        }

        .article-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-dark);
            padding: 30px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .article-card:hover {
            border-color: rgba(124, 58, 237, 0.4);
            box-shadow: var(--shadow-glow);
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 20px;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.03);
            border-radius: 50px;
            padding: 5px 15px;
            border: 1px solid rgba(255, 255, 255, 0.04);
        }

        .meta-item i {
            color: var(--primary-light);
            font-size: 13px;
        }

        .article-content {
            font-size: 16px;
            line-height: 2;
            color: #d0d0e8;
        }

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-light);
            margin: 40px 0 20px;
            padding-left: 15px;
            border-left: 3px solid var(--primary);
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-light);
            margin: 30px 0 15px;
        }

        .article-content p {
            margin-bottom: 16px;
        }

        .article-content img {
            border-radius: var(--radius);
            margin: 20px 0;
            box-shadow: var(--shadow);
        }

        .article-content iframe {
            border-radius: var(--radius);
            width: 100%;
            min-height: 400px;
            border: none;
            margin: 20px 0;
        }

        .article-content ul,
        .article-content ol {
            padding-left: 20px;
            margin-bottom: 16px;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            padding: 15px 20px;
            background: rgba(124, 58, 237, 0.1);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 20px 0;
            color: var(--text-muted);
        }

        .article-content a {
            color: var(--primary-light);
            border-bottom: 1px solid transparent;
        }

        .article-content a:hover {
            border-bottom-color: var(--primary-light);
        }

        .related-section {
            padding: 60px 0;
            background: var(--bg-darker);
            border-top: 1px solid rgba(255, 255, 255, 0.03);
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--primary-light);
            font-weight: 600;
            background: rgba(124, 58, 237, 0.1);
            padding: 5px 15px;
            border-radius: 50px;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 8px;
            letter-spacing: -0.5px;
        }

        .article-card-small {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-dark);
            padding: 20px;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .article-card-small:hover {
            border-color: rgba(124, 58, 237, 0.3);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
            transform: translateY(-5px);
        }

        .article-card-small img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 8px;
            margin-bottom: 15px;
        }

        .article-card-small h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 10px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card-small p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }

        .article-card-small .btn {
            align-self: flex-start;
            font-size: 14px;
        }

        .cta-section {
            padding: 80px 0;
            background: linear-gradient(rgba(6, 6, 18, 0.85), rgba(6, 6, 18, 0.95)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            position: relative;
            border-top: 1px solid rgba(255, 255, 255, 0.03);
            border-bottom: 1px solid rgba(255, 255, 255, 0.03);
        }

        .cta-wrapper {
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.15), rgba(217, 70, 239, 0.1));
            border: 1px solid rgba(124, 58, 237, 0.3);
            border-radius: 24px;
            padding: 50px 40px;
            text-align: center;
            backdrop-filter: blur(10px);
            position: relative;
            overflow: hidden;
        }

        .cta-wrapper::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 200px;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--primary-light), transparent);
        }

        .cta-wrapper h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 15px;
        }

        .cta-wrapper p {
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 30px;
        }

        .footer {
            background: var(--bg-darker);
            padding: 60px 0 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.03);
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 15px;
        }

        .footer-brand .brand-mark {
            width: 38px;
            height: 38px;
            font-size: 14px;
        }

        .footer-brand strong {
            color: var(--text-light);
            font-size: 16px;
            font-weight: 700;
            white-space: nowrap;
        }

        .footer p {
            color: var(--text-dim);
            font-size: 14px;
            line-height: 1.7;
        }

        .footer-title {
            color: var(--text-light);
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 15px;
            letter-spacing: 0.5px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: var(--text-dim);
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--primary-light);
            transform: translateX(4px);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 20px;
            margin-top: 40px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-dim);
        }

        .not-found {
            text-align: center;
            padding: 100px 20px;
        }

        .not-found i {
            font-size: 60px;
            color: var(--primary);
            margin-bottom: 20px;
            display: block;
        }

        .not-found h2 {
            font-size: 1.8rem;
            margin-bottom: 15px;
        }

        .not-found p {
            color: var(--text-muted);
            margin-bottom: 25px;
        }

        .bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: rgba(10, 10, 26, 0.95);
            backdrop-filter: blur(20px);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            z-index: 999;
            padding: 8px 0 calc(8px + env(safe-area-inset-bottom));
        }

        .bottom-nav .container {
            display: flex;
            justify-content: space-around;
            align-items: center;
        }

        .bottom-nav .bottom-nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            color: var(--text-muted);
            font-size: 11px;
            padding: 5px 15px;
            border-radius: 12px;
            transition: var(--transition);
        }

        .bottom-nav .bottom-nav-item i {
            font-size: 20px;
        }

        .bottom-nav .bottom-nav-item:hover,
        .bottom-nav .bottom-nav-item.active {
            color: var(--primary-light);
            background: rgba(124, 58, 237, 0.1);
        }

        .article-inner-card {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius);
            padding: 20px;
            margin-top: 20px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }

        .article-inner-card h5 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-light);
        }

        .article-inner-card h5 i {
            color: var(--primary);
        }

        .article-inner-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .article-inner-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .article-inner-card ul li:last-child {
            border-bottom: none;
        }

        .article-inner-card ul li a {
            color: var(--text-muted);
            font-size: 14px;
            transition: var(--transition);
            display: block;
        }

        .article-inner-card ul li a:hover {
            color: var(--primary-light);
            padding-left: 6px;
        }

        .article-sidebar-card {
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.15), rgba(217, 70, 239, 0.08));
            border: 1px solid rgba(124, 58, 237, 0.25);
            border-radius: var(--radius);
            padding: 25px;
            margin-top: 20px;
        }

        .article-sidebar-card h5 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text-light);
        }

        .article-sidebar-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        @media (max-width: 992px) {
            .navbar-custom {
                height: 70px;
            }

            .navbar-brand .brand-text strong {
                font-size: 16px;
            }

            .navbar-brand .brand-text small {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 50px 0 40px;
            }

            .page-banner h1 {
                font-size: 1.5rem;
            }

            .article-card {
                padding: 20px;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .cta-wrapper {
                padding: 30px 20px;
            }

            .cta-wrapper h2 {
                font-size: 1.5rem;
            }

            .navbar-custom {
                display: none;
            }

            .bottom-nav {
                display: block;
            }

            .footer {
                padding-bottom: 80px;
            }

            .article-content iframe {
                min-height: 250px;
            }

            body {
                padding-bottom: 60px;
            }
        }

        @media (max-width: 576px) {
            .container {
                padding: 0 16px;
            }

            .page-banner {
                padding: 40px 0 30px;
            }

            .page-banner h1 {
                font-size: 1.25rem;
            }

            .article-card {
                padding: 16px;
            }

            .article-meta {
                gap: 8px;
            }

            .meta-item {
                font-size: 12px;
                padding: 4px 10px;
            }

            .article-content {
                font-size: 15px;
            }

            .article-content h2 {
                font-size: 1.25rem;
            }
        }