/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f172a;
            --primary-light: #1e3a5f;
            --primary-mid: #2563eb;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #06b6d4;
            --bg: #ffffff;
            --bg-alt: #f1f5f9;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-light: #64748b;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 12px 48px rgba(15, 23, 42, 0.14);
            --shadow-btn: 0 4px 16px rgba(37, 99, 235, 0.30);
            --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --section-gap: 5rem;
            --container-pad: 1.5rem;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary-mid);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        ul,
        ol {
            padding-left: 1.25rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin-top: 0;
            font-weight: 700;
            line-height: 1.3;
            color: var(--primary);
        }
        p {
            margin-top: 0;
            margin-bottom: 1rem;
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--container-pad);
        }
        .container-fluid {
            width: 100%;
            padding: 0 var(--container-pad);
        }

        /* ===== Section Spacing ===== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: var(--text-white);
        }
        .section-title {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-title h2 {
            font-size: 2.25rem;
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }
        .section-title p {
            font-size: 1.125rem;
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto;
        }
        .section-dark .section-title p {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--secondary);
            border-radius: 4px;
            margin: 0.75rem auto 1.5rem;
        }
        .section-dark .section-divider {
            background: var(--secondary-light);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(15, 23, 42, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 0.6rem;
            padding-bottom: 0.6rem;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.03em;
            white-space: nowrap;
        }
        .site-logo i {
            color: var(--secondary);
            font-size: 1.5rem;
        }
        .site-logo:hover {
            color: var(--secondary);
        }
        .site-logo span {
            background: linear-gradient(135deg, #fff 60%, var(--secondary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-list .nav-item {
            margin: 0;
        }
        .nav-list .nav-link {
            display: block;
            padding: 0.5rem 1.1rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.8);
            border-radius: var(--radius-xs);
            transition: var(--transition);
        }
        .nav-list .nav-link:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-list .nav-link.active {
            color: var(--text-white);
            background: var(--primary-mid);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.55rem 1.5rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--primary);
            background: var(--secondary);
            border-radius: 50px;
            border: none;
            transition: var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .nav-cta:hover {
            background: var(--secondary-light);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
        }
        .nav-cta i {
            font-size: 0.85rem;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.5rem;
            padding: 0.25rem;
            cursor: pointer;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
            overflow: hidden;
            padding: 4rem 0;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 40%, rgba(15, 23, 42, 0.50) 80%, transparent 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 720px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.35rem 1.2rem;
            background: rgba(245, 158, 11, 0.18);
            color: var(--secondary-light);
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: 50px;
            border: 1px solid rgba(245, 158, 11, 0.25);
            margin-bottom: 1.5rem;
            backdrop-filter: blur(4px);
        }
        .hero-content h1 {
            font-size: 3.5rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 1.25rem;
        }
        .hero-content h1 .highlight {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin-bottom: 2rem;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.85rem 2.2rem;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--primary);
            background: var(--secondary);
            border: none;
            border-radius: 50px;
            transition: var(--transition);
            cursor: pointer;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary-custom:hover {
            background: var(--secondary-light);
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(245, 158, 11, 0.40);
            color: var(--primary);
        }
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.85rem 2.2rem;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-white);
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.25);
            border-radius: 50px;
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-outline-custom:hover {
            border-color: var(--secondary);
            color: var(--secondary);
            background: rgba(245, 158, 11, 0.10);
            transform: translateY(-3px);
        }
        .hero-stats {
            display: flex;
            gap: 2.5rem;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.10);
        }
        .hero-stat-item {
            text-align: left;
        }
        .hero-stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--secondary);
            display: block;
            line-height: 1.2;
        }
        .hero-stat-item .label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            font-weight: 400;
        }

        /* ===== Cards ===== */
        .card-modern {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 2rem;
            transition: var(--transition);
            box-shadow: var(--shadow);
            height: 100%;
        }
        .card-modern:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-mid);
        }
        .card-modern .icon-wrap {
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            background: rgba(37, 99, 235, 0.10);
            color: var(--primary-mid);
            font-size: 1.5rem;
            margin-bottom: 1.25rem;
            transition: var(--transition);
        }
        .card-modern:hover .icon-wrap {
            background: var(--primary-mid);
            color: var(--text-white);
        }
        .card-modern h3 {
            font-size: 1.25rem;
            margin-bottom: 0.75rem;
        }
        .card-modern p {
            color: var(--text-light);
            font-size: 0.95rem;
            margin-bottom: 0;
        }

        /* ===== Cover Cards ===== */
        .cover-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            height: 100%;
            min-height: 320px;
            display: flex;
            align-items: flex-end;
            background: var(--bg-dark);
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .cover-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .cover-card:hover img {
            transform: scale(1.06);
        }
        .cover-card .overlay {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 2rem 1.5rem 1.5rem;
            background: linear-gradient(transparent, rgba(15, 23, 42, 0.92));
            color: var(--text-white);
        }
        .cover-card .overlay h3 {
            color: var(--text-white);
            font-size: 1.2rem;
            margin-bottom: 0.35rem;
        }
        .cover-card .overlay p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 0.5rem;
        }
        .cover-card .overlay .tag {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--secondary);
            color: var(--primary);
            border-radius: 50px;
        }

        /* ===== News / List ===== */
        .news-card {
            display: flex;
            flex-direction: column;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow);
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-mid);
        }
        .news-card .news-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .news-card .news-body {
            padding: 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .news-cat {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(37, 99, 235, 0.10);
            color: var(--primary-mid);
            border-radius: 50px;
            margin-bottom: 0.6rem;
            align-self: flex-start;
        }
        .news-card .news-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.5rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-title a {
            color: inherit;
        }
        .news-card .news-title a:hover {
            color: var(--primary-mid);
        }
        .news-card .news-excerpt {
            font-size: 0.9rem;
            color: var(--text-light);
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 0.75rem;
        }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.8rem;
            color: var(--text-light);
            border-top: 1px solid var(--border);
            padding-top: 0.75rem;
        }
        .news-card .news-meta i {
            margin-right: 0.25rem;
        }
        .news-empty {
            text-align: center;
            padding: 3rem 1rem;
            color: var(--text-light);
            background: var(--bg-alt);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        .news-empty i {
            font-size: 2.5rem;
            color: var(--text-light);
            margin-bottom: 1rem;
            display: block;
        }

        /* ===== Stats ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            text-align: center;
        }
        .stat-item {
            padding: 2rem 1rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-4px);
        }
        .stat-item .num {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--secondary);
            display: block;
            line-height: 1.2;
        }
        .stat-item .label {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 0.5rem;
            display: block;
        }

        /* ===== Process ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            position: relative;
        }
        .process-step {
            text-align: center;
            padding: 2rem 1rem;
            position: relative;
        }
        .process-step .step-num {
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            background: var(--primary-mid);
            color: var(--text-white);
            font-size: 1.4rem;
            font-weight: 700;
            border-radius: 50%;
            transition: var(--transition);
        }
        .process-step:hover .step-num {
            background: var(--secondary);
            color: var(--primary);
            transform: scale(1.08);
        }
        .process-step h4 {
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
        }
        .process-step p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 0;
        }
        .process-step::after {
            content: '→';
            position: absolute;
            right: -1rem;
            top: 2.4rem;
            font-size: 1.8rem;
            color: var(--text-light);
            opacity: 0.4;
            font-weight: 300;
        }
        .process-step:last-child::after {
            display: none;
        }

        /* ===== FAQ ===== */
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 0.75rem;
            overflow: hidden;
            background: var(--bg);
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-mid);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.1rem 1.5rem;
            font-weight: 600;
            font-size: 1rem;
            color: var(--primary);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary-mid);
        }
        .faq-question i {
            transition: var(--transition);
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
            color: var(--primary-mid);
        }
        .faq-answer {
            padding: 0 1.5rem 1.2rem;
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show {
            display: block;
        }
        .faq-item.active .faq-question {
            color: var(--primary-mid);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius);
            padding: 3.5rem 3rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: rgba(245, 158, 11, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h2 {
            color: var(--text-white);
            font-size: 2rem;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 1.75rem;
        }
        .cta-section .btn-primary-custom {
            font-size: 1.1rem;
            padding: 1rem 2.5rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 3.5rem 0 1.5rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .site-footer .footer-brand .site-logo {
            font-size: 1.2rem;
            margin-bottom: 0.75rem;
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            max-width: 300px;
        }
        .site-footer h5 {
            color: var(--text-white);
            font-size: 1rem;
            margin-bottom: 1rem;
            font-weight: 600;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 0.5rem;
        }
        .site-footer ul a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .site-footer ul a:hover {
            color: var(--secondary);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.75rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--secondary);
        }
        .footer-social {
            display: flex;
            gap: 0.75rem;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--secondary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            :root {
                --section-gap: 3.5rem;
            }
            .hero-content h1 {
                font-size: 2.8rem;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-step::after {
                display: none;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 2.5rem;
                --container-pad: 1rem;
            }
            .nav-list {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(15, 23, 42, 0.98);
                flex-direction: column;
                padding: 1rem 1.5rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                gap: 0.25rem;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .nav-cta {
                padding: 0.45rem 1.2rem;
                font-size: 0.85rem;
            }
            .hero {
                min-height: 70vh;
                padding: 3rem 0;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .hero-content p {
                font-size: 1rem;
            }
            .hero-stats {
                flex-wrap: wrap;
                gap: 1.5rem;
            }
            .hero-stat-item .num {
                font-size: 1.5rem;
            }
            .section-title h2 {
                font-size: 1.7rem;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .stat-item .num {
                font-size: 2rem;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .cta-section {
                padding: 2.5rem 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-actions .btn-primary-custom,
            .hero-actions .btn-outline-custom {
                width: 100%;
                justify-content: center;
            }
            .cover-card {
                min-height: 260px;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.7rem;
            }
            .hero-stats {
                flex-direction: column;
                gap: 0.75rem;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }
            .stat-item {
                padding: 1.25rem 0.75rem;
            }
            .stat-item .num {
                font-size: 1.6rem;
            }
            .site-logo {
                font-size: 1.1rem;
            }
            .section-title h2 {
                font-size: 1.4rem;
            }
            .news-card .news-img {
                height: 160px;
            }
        }

        /* ===== Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: 2px;
        }
        .btn-primary-custom:focus-visible,
        .btn-outline-custom:focus-visible,
        .nav-cta:focus-visible {
            outline: 3px solid var(--secondary-light);
            outline-offset: 2px;
        }

        /* ===== Smooth scroll offset ===== */
        .scroll-offset {
            scroll-margin-top: 80px;
        }

        /* ===== Utility ===== */
        .text-gold {
            color: var(--secondary);
        }
        .bg-gold-soft {
            background: rgba(245, 158, 11, 0.08);
        }
        .rounded-custom {
            border-radius: var(--radius);
        }

        /* Bootstrap 覆盖 */
        .row.g-4 {
            --bs-gutter-y: 1.5rem;
        }
        .row.g-3 {
            --bs-gutter-y: 1rem;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #f1faee;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-light: #f8f9fa;
            --bg-dark: #1a1a2e;
            --text-dark: #212529;
            --text-body: #343a40;
            --text-muted: #6c757d;
            --text-white: #ffffff;
            --border-color: #dee2e6;
            --border-light: #e9ecef;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-body: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            --font-heading: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg-light);
        }

        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 4px; }

        ul, ol { list-style: none; }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow var(--transition);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0,0,0,0.06);
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-dark);
            text-decoration: none;
            letter-spacing: -0.5px;
        }

        .site-logo i {
            color: var(--primary);
            font-size: 28px;
            transition: transform var(--transition);
        }

        .site-logo:hover i {
            transform: rotate(-10deg) scale(1.1);
        }

        .site-logo:hover {
            color: var(--text-dark);
        }

        .site-logo span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 26px;
            color: var(--text-dark);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .nav-toggle:hover {
            background: var(--bg-light);
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-item {
            position: relative;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            text-decoration: none;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.06);
        }

        .nav-link.active {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.10);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-white);
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 50px;
            text-decoration: none;
            box-shadow: 0 4px 15px rgba(230, 57, 70, 0.35);
            transition: all var(--transition);
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(230, 57, 70, 0.45);
            color: var(--text-white);
        }

        .nav-cta i {
            font-size: 14px;
            transition: transform var(--transition);
        }

        .nav-cta:hover i {
            transform: translateX(4px);
        }

        /* ===== Article Detail ===== */
        .article-hero {
            padding-top: calc(var(--header-height) + 48px);
            padding-bottom: 48px;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15;
            z-index: 1;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-light), transparent);
            z-index: 2;
        }

        .article-hero .container {
            position: relative;
            z-index: 3;
            width: 100%;
        }

        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .article-hero .breadcrumb a {
            color: rgba(255,255,255,0.8);
            text-decoration: none;
            transition: color var(--transition);
        }

        .article-hero .breadcrumb a:hover {
            color: var(--text-white);
        }

        .article-hero .breadcrumb span {
            color: rgba(255,255,255,0.5);
        }

        .article-hero .breadcrumb .fa-chevron-right {
            font-size: 10px;
            opacity: 0.5;
        }

        .article-hero h1 {
            font-size: clamp(28px, 4.5vw, 48px);
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.25;
            max-width: 900px;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 32px;
            align-items: center;
            color: rgba(255,255,255,0.75);
            font-size: 14px;
        }

        .article-meta .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            background: rgba(230, 57, 70, 0.85);
            color: var(--text-white);
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }

        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta .meta-item i {
            font-size: 14px;
            opacity: 0.7;
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: 48px 0 64px;
            background: var(--bg-light);
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }

        .article-content {
            background: var(--text-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            padding: 40px;
            overflow: hidden;
        }

        .article-content .featured-image {
            width: 100%;
            border-radius: var(--radius-sm);
            margin-bottom: 32px;
            object-fit: cover;
            max-height: 480px;
            box-shadow: var(--shadow-sm);
        }

        .article-body {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-body);
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 40px 0 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-light);
        }

        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 32px 0 12px;
        }

        .article-body p {
            margin-bottom: 20px;
        }

        .article-body ul, .article-body ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }

        .article-body ul li {
            list-style: disc;
            margin-bottom: 8px;
        }

        .article-body ol li {
            list-style: decimal;
            margin-bottom: 8px;
        }

        .article-body blockquote {
            margin: 24px 0;
            padding: 20px 24px;
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-dark);
            font-style: italic;
        }

        .article-body img {
            border-radius: var(--radius-sm);
            margin: 24px auto;
            box-shadow: var(--shadow-sm);
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .article-body a:hover {
            color: var(--primary-dark);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
        }

        .article-tags .tag {
            display: inline-block;
            padding: 6px 16px;
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            font-size: 13px;
            color: var(--text-muted);
            text-decoration: none;
            transition: all var(--transition);
        }

        .article-tags .tag:hover {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
        }

        .article-nav {
            display: flex;
            justify-content: space-between;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
            gap: 16px;
            flex-wrap: wrap;
        }

        .article-nav a {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 10px 20px;
            background: var(--bg-light);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text-body);
            text-decoration: none;
            transition: all var(--transition);
            max-width: 45%;
        }

        .article-nav a:hover {
            background: var(--text-white);
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .article-nav a i {
            font-size: 12px;
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .sidebar-card {
            background: var(--text-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
        }

        .sidebar-card h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h4 i {
            color: var(--primary);
        }

        .sidebar-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .sidebar-list li a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 8px 0;
            color: var(--text-body);
            text-decoration: none;
            transition: all var(--transition);
            border-bottom: 1px solid transparent;
        }

        .sidebar-list li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .sidebar-list li a .fa-chevron-right {
            font-size: 10px;
            margin-top: 6px;
            color: var(--primary);
            flex-shrink: 0;
        }

        .sidebar-list li a .title {
            font-size: 14px;
            line-height: 1.5;
        }

        .sidebar-list li a .date {
            font-size: 12px;
            color: var(--text-muted);
            display: block;
            margin-top: 2px;
        }

        .sidebar-cta {
            background: linear-gradient(135deg, var(--secondary), #0f3460);
            color: var(--text-white);
            padding: 28px 24px;
            border-radius: var(--radius);
            text-align: center;
        }

        .sidebar-cta h4 {
            color: var(--text-white);
            border-bottom-color: rgba(255,255,255,0.2);
        }

        .sidebar-cta p {
            font-size: 14px;
            opacity: 0.85;
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .sidebar-cta .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            text-decoration: none;
            transition: all var(--transition);
            box-shadow: 0 4px 15px rgba(230, 57, 70, 0.4);
        }

        .sidebar-cta .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(230, 57, 70, 0.5);
            color: var(--text-white);
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: var(--text-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
        }

        .not-found-box i {
            font-size: 64px;
            color: var(--text-muted);
            opacity: 0.3;
            margin-bottom: 20px;
        }

        .not-found-box h2 {
            font-size: 28px;
            color: var(--text-dark);
            margin-bottom: 12px;
        }

        .not-found-box p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .not-found-box a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition);
        }

        .not-found-box a:hover {
            background: var(--primary-dark);
            color: var(--text-white);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.85);
            padding: 56px 0 0;
            margin-top: 48px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }

        .footer-brand .site-logo {
            color: var(--text-white);
            margin-bottom: 16px;
            display: inline-flex;
        }

        .footer-brand .site-logo span {
            background: linear-gradient(135deg, #f1faee, #a8dadc);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            opacity: 0.7;
            max-width: 360px;
        }

        .site-footer h5 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .site-footer ul li {
            margin-bottom: 10px;
        }

        .site-footer ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 14px;
            text-decoration: none;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .site-footer ul li a:hover {
            color: var(--text-white);
            padding-left: 4px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 12px;
        }

        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.7);
            font-size: 18px;
            transition: all var(--transition);
            text-decoration: none;
        }

        .footer-social a:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-3px);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(255,255,255,0.4);
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom a {
            color: rgba(255,255,255,0.5);
            text-decoration: none;
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: rgba(255,255,255,0.8);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }

            .nav-toggle {
                display: block;
            }

            .nav-list {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow);
            }

            .nav-list.open {
                display: flex;
            }

            .nav-link {
                width: 100%;
                padding: 12px 16px;
                font-size: 16px;
            }

            .nav-link.active::after {
                display: none;
            }

            .nav-cta {
                width: 100%;
                justify-content: center;
                margin-top: 8px;
                padding: 12px 24px;
            }

            .article-hero {
                min-height: 240px;
                padding-top: calc(var(--header-height) + 32px);
                padding-bottom: 32px;
            }

            .article-hero h1 {
                font-size: 26px;
            }

            .article-content {
                padding: 24px 20px;
            }

            .article-sidebar {
                grid-template-columns: 1fr;
            }

            .article-nav a {
                max-width: 100%;
                flex: 1;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .article-hero h1 {
                font-size: 22px;
            }

            .article-content {
                padding: 16px;
            }

            .article-meta {
                flex-direction: column;
                gap: 10px;
                align-items: flex-start;
            }

            .sidebar-card {
                padding: 20px 16px;
            }
        }

        /* ===== Print ===== */
        @media print {
            .site-header, .site-footer, .article-sidebar, .article-nav {
                display: none;
            }
            .article-hero {
                padding: 24px 0;
                background: #fff !important;
                min-height: auto;
            }
            .article-hero h1 {
                color: #000;
            }
            .article-meta {
                color: #666;
            }
            .article-content {
                box-shadow: none;
                padding: 0;
            }
            .article-main {
                padding: 16px 0;
            }
            body {
                background: #fff;
            }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e11d48;
            --primary-dark: #be123c;
            --primary-light: #fda4af;
            --secondary: #0f172a;
            --secondary-light: #1e293b;
            --accent: #f59e0b;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-dark: #0f172a;
            --text: #0f172a;
            --text-light: #475569;
            --text-muted: #94a3b8;
            --text-on-dark: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
            --shadow-hover: 0 20px 50px rgba(15, 23, 42, 0.16);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
            --space-section: 5rem;
            --space-section-sm: 3rem;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: var(--transition);
        }
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 6px;
        }
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 0.75rem 1rem;
            transition: var(--transition);
            background: var(--bg);
            color: var(--text);
        }
        input:focus,
        textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(225, 29, 72, 0.12);
        }
        input::placeholder,
        textarea::placeholder {
            color: var(--text-muted);
        }
        ul {
            list-style: none;
            padding: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }
        h1 {
            font-size: 2.8rem;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 2.2rem;
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.2rem;
        }
        h5 {
            font-size: 1rem;
            font-weight: 600;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--header-h);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition);
        }
        .site-header:hover {
            box-shadow: 0 2px 20px rgba(15, 23, 42, 0.06);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 0.625rem;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.02em;
        }
        .site-logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo:hover {
            color: var(--text);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .nav-item {
            position: relative;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1.2rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-light);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(225, 29, 72, 0.06);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(225, 29, 72, 0.08);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 1.2rem;
            right: 1.2rem;
            height: 3px;
            background: var(--primary);
            border-radius: 3px 3px 0 0;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.6rem 1.6rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            background: var(--primary);
            color: #fff !important;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(225, 29, 72, 0.3);
            white-space: nowrap;
        }
        .nav-cta i {
            font-size: 0.8rem;
            transition: transform var(--transition);
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 24px rgba(225, 29, 72, 0.4);
            transform: translateY(-1px);
        }
        .nav-cta:hover i {
            transform: translateX(3px);
        }
        .nav-cta:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(225, 29, 72, 0.3);
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 0.4rem 0.6rem;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(15, 23, 42, 0.06);
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            margin-top: var(--header-h);
            padding: 6rem 0 4rem;
            position: relative;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            isolation: isolate;
            min-height: 380px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 30%, rgba(15, 23, 42, 0.55) 80%);
            z-index: 1;
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .category-hero h1 {
            color: #fff;
            font-size: 3.2rem;
            margin-bottom: 0.75rem;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .category-hero p {
            color: var(--text-on-dark);
            font-size: 1.2rem;
            max-width: 680px;
            margin: 0 auto 1.8rem;
            opacity: 0.9;
            line-height: 1.8;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.35rem 1.2rem;
            border-radius: 50px;
            background: rgba(225, 29, 72, 0.25);
            color: var(--primary-light);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1rem;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(225, 29, 72, 0.3);
        }
        .category-hero .hero-badge i {
            font-size: 0.75rem;
        }
        .hero-search {
            display: flex;
            max-width: 520px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.15);
            border-radius: var(--radius);
            padding: 0.35rem;
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .hero-search input {
            flex: 1;
            border: none;
            background: transparent;
            color: #fff;
            padding: 0.7rem 1.2rem;
            font-size: 0.95rem;
        }
        .hero-search input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        .hero-search input:focus {
            box-shadow: none;
            border-color: transparent;
        }
        .hero-search button {
            padding: 0.7rem 1.6rem;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .hero-search button:hover {
            background: var(--primary-dark);
        }

        /* ===== Section Shared ===== */
        .section {
            padding: var(--space-section) 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-on-dark);
        }
        .section-dark h2,
        .section-dark h3 {
            color: #fff;
        }
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 3.5rem;
        }
        .section-header h2 {
            margin-bottom: 0.75rem;
        }
        .section-header p {
            color: var(--text-light);
            font-size: 1.1rem;
        }
        .section-dark .section-header p {
            color: var(--text-muted);
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.25rem 1rem;
            border-radius: 50px;
            background: rgba(225, 29, 72, 0.08);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 0.75rem;
        }
        .section-dark .section-label {
            background: rgba(225, 29, 72, 0.2);
            color: var(--primary-light);
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.8rem;
        }
        .card-grid-3 {
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        }
        .card-grid-4 {
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        }

        /* ===== Card ===== */
        .card {
            background: var(--bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
            border-radius: 0;
        }
        .card-body {
            padding: 1.5rem;
        }
        .card-body h3 {
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
        }
        .card-body h3 a {
            color: var(--text);
        }
        .card-body h3 a:hover {
            color: var(--primary);
        }
        .card-body p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 0.75rem;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 0.5rem;
        }
        .card-meta i {
            margin-right: 0.25rem;
        }
        .card-tag {
            display: inline-block;
            padding: 0.15rem 0.7rem;
            border-radius: 50px;
            background: rgba(225, 29, 72, 0.06);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 500;
        }
        .card-footer {
            padding: 0 1.5rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .card-footer .btn-sm {
            font-size: 0.85rem;
            padding: 0.4rem 1.2rem;
        }

        /* ===== Feature Cards ===== */
        .feature-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 2rem 1.8rem;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .feature-card .icon {
            width: 60px;
            height: 60px;
            margin: 0 auto 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            background: rgba(225, 29, 72, 0.08);
            color: var(--primary);
            font-size: 1.6rem;
            transition: var(--transition);
        }
        .feature-card:hover .icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 1.15rem;
            margin-bottom: 0.5rem;
        }
        .feature-card p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 2rem;
            text-align: center;
        }
        .stat-item {
            padding: 1.5rem 1rem;
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .stat-label {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-top: 0.3rem;
        }
        .section-dark .stat-number {
            color: var(--primary-light);
        }
        .section-dark .stat-label {
            color: var(--text-muted);
        }

        /* ===== Tags / Topics ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            justify-content: center;
        }
        .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1.4rem;
            border-radius: 50px;
            background: var(--bg);
            border: 1px solid var(--border);
            color: var(--text-light);
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .tag-item:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(225, 29, 72, 0.25);
        }
        .tag-item i {
            font-size: 0.75rem;
        }
        .section-dark .tag-item {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.12);
            color: var(--text-on-dark);
        }
        .section-dark .tag-item:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .faq-item {
            background: var(--bg);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.2rem 1.5rem;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            background: transparent;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: transform var(--transition);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
            animation: fadeIn 0.3s ease;
        }
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-6px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .section-dark .faq-item {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.1);
        }
        .section-dark .faq-question {
            color: var(--text-on-dark);
        }
        .section-dark .faq-question:hover {
            color: var(--primary-light);
        }
        .section-dark .faq-answer {
            color: var(--text-muted);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 4.5rem 0;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            position: relative;
            isolation: isolate;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.9) 40%, rgba(15, 23, 42, 0.65) 80%);
            z-index: 1;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2.4rem;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            color: var(--text-on-dark);
            font-size: 1.1rem;
            max-width: 580px;
            margin: 0 auto 2rem;
            opacity: 0.85;
        }
        .cta-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff !important;
            box-shadow: 0 4px 16px rgba(225, 29, 72, 0.35);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 8px 28px rgba(225, 29, 72, 0.45);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(225, 29, 72, 0.3);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff !important;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }
        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }

        /* ===== Featured Post ===== */
        .featured-post {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            align-items: center;
            background: var(--bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .featured-post:hover {
            box-shadow: var(--shadow-hover);
        }
        .featured-post .post-img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            border-radius: 0;
        }
        .featured-post .post-content {
            padding: 2rem 2.5rem 2rem 0;
        }
        .featured-post .post-content .badge {
            display: inline-block;
            padding: 0.2rem 0.9rem;
            border-radius: 50px;
            background: rgba(225, 29, 72, 0.08);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
        }
        .featured-post .post-content h3 {
            font-size: 1.6rem;
            margin-bottom: 0.75rem;
        }
        .featured-post .post-content p {
            color: var(--text-light);
            font-size: 0.98rem;
            line-height: 1.8;
            margin-bottom: 1.2rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--secondary);
            color: var(--text-on-dark);
            padding: 4rem 0 2rem;
        }
        .site-footer .site-logo {
            color: #fff;
            margin-bottom: 1rem;
        }
        .site-footer .site-logo span {
            background: linear-gradient(135deg, var(--primary-light), #fff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-footer p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            margin-bottom: 2rem;
        }
        .footer-grid h5 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 1.2rem;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }
        .footer-grid ul li {
            margin-bottom: 0.5rem;
        }
        .footer-grid ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-grid ul li a:hover {
            color: var(--primary-light);
            padding-left: 3px;
        }
        .footer-social {
            display: flex;
            gap: 0.75rem;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .featured-post {
                grid-template-columns: 1fr;
            }
            .featured-post .post-content {
                padding: 0 1.8rem 1.8rem;
            }
            .featured-post .post-img {
                height: 240px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --space-section: 3.5rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .category-hero {
                padding: 4.5rem 0 3rem;
                min-height: 300px;
            }
            .category-hero h1 {
                font-size: 2.2rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
            .nav-toggle {
                display: block;
            }
            .nav-list {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 1rem 1.5rem 1.8rem;
                gap: 0.25rem;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 40px rgba(15, 23, 42, 0.1);
                border-radius: 0 0 var(--radius) var(--radius);
            }
            .nav-list.open {
                display: flex;
            }
            .nav-link {
                padding: 0.75rem 1rem;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-link.active::after {
                display: none;
            }
            .nav-link.active {
                background: rgba(225, 29, 72, 0.08);
            }
            .nav-cta {
                margin-top: 0.5rem;
                justify-content: center;
                width: 100%;
                padding: 0.75rem 1.6rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .card-grid-3,
            .card-grid-4 {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .hero-search {
                flex-direction: column;
                background: transparent;
                border: none;
                padding: 0;
                gap: 0.75rem;
            }
            .hero-search input {
                background: rgba(255, 255, 255, 0.12);
                border-radius: var(--radius-sm);
                padding: 0.7rem 1.2rem;
                border: 1px solid rgba(255, 255, 255, 0.15);
            }
            .hero-search button {
                width: 100%;
                padding: 0.75rem;
            }
            .section-header {
                margin-bottom: 2.5rem;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
                max-width: 320px;
            }
            .featured-post .post-content h3 {
                font-size: 1.3rem;
            }
            .faq-question {
                font-size: 0.95rem;
                padding: 1rem 1.2rem;
            }
            .faq-answer {
                padding: 0 1.2rem 1rem;
                font-size: 0.9rem;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 1rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero p {
                font-size: 0.92rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .stat-number {
                font-size: 1.9rem;
            }
            .tag-item {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
            .feature-card {
                padding: 1.5rem 1.2rem;
            }
            .card-body {
                padding: 1.2rem;
            }
            .featured-post .post-content {
                padding: 0 1.2rem 1.2rem;
            }
            .site-logo span {
                font-size: 1.1rem;
            }
            .site-logo i {
                font-size: 1.3rem;
            }
        }