/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #C9A84C;
            --primary-dark: #A8892E;
            --primary-light: #E8D48B;
            --secondary: #8B1A1A;
            --secondary-dark: #6B0F0F;
            --accent: #D4A017;
            --bg-dark: #1A1000;
            --bg-mid: #2C1810;
            --bg-light: #F8F6F0;
            --bg-white: #FFFFFF;
            --text-dark: #1A1000;
            --text-main: #2C1810;
            --text-light: #6B5A4A;
            --text-white: #FFFFFF;
            --border-light: #E8E0D0;
            --border-gold: #C9A84C;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --radius-full: 9999px;
            --font-main: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --gap-section: 80px;
            --gap-block: 40px;
            --max-width: 1200px;
            --nav-height: 72px;
            --transition: 0.30s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== 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-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-light);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; transition: var(--transition); }
        input, textarea { font-family: inherit; outline: none; transition: var(--transition); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text-dark); }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Typography ===== */
        .section-title {
            font-size: 36px;
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-subtitle {
            font-size: 18px;
            color: var(--text-light);
            text-align: center;
            max-width: 640px;
            margin: 0 auto var(--gap-block);
        }
        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: var(--radius-full);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-full);
            transition: var(--transition);
            border: 2px solid transparent;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: var(--text-dark);
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(201, 168, 76, 0.35);
        }
        .btn-primary:active { transform: translateY(0); box-shadow: none; }
        .btn-secondary {
            background: transparent;
            color: var(--text-white);
            border-color: var(--text-white);
        }
        .btn-secondary:hover {
            background: var(--text-white);
            color: var(--text-dark);
            transform: translateY(-2px);
        }
        .btn-ghost {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-ghost:hover {
            background: var(--primary);
            color: var(--text-dark);
            transform: translateY(-2px);
        }
        .btn-lg { padding: 16px 40px; font-size: 17px; }
        .btn-sm { padding: 8px 20px; font-size: 13px; }
        .btn .fa-arrow-right { font-size: 14px; }

        /* ===== Header & Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
            height: var(--nav-height);
            transition: var(--transition);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.3px;
        }
        .header-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-dark);
            font-size: 20px;
            font-weight: 900;
        }
        .header-logo .logo-text {
            background: linear-gradient(135deg, var(--primary-dark), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .header-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
            position: relative;
        }
        .header-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: var(--transition);
        }
        .header-nav a:hover { color: var(--text-dark); }
        .header-nav a:hover::after { width: 100%; }
        .header-nav a.active { color: var(--text-dark); font-weight: 600; }
        .header-nav a.active::after { width: 100%; background: var(--primary); }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: var(--radius-full);
            padding: 0 16px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(201, 168, 76, 0.15);
        }
        .header-search input {
            border: none;
            background: transparent;
            padding: 8px 12px;
            font-size: 14px;
            width: 160px;
            color: var(--text-dark);
        }
        .header-search input::placeholder { color: var(--text-light); }
        .header-search button {
            color: var(--text-light);
            font-size: 14px;
            padding: 4px;
        }
        .header-search button:hover { color: var(--primary); }

        .header-cta {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: var(--text-dark);
            padding: 10px 24px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 14px;
            border: none;
        }
        .header-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(201, 168, 76, 0.35);
        }

        /* Mobile nav toggle */
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--text-dark);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .nav-toggle.active span:nth-child(2) { opacity: 0; }
        .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* ===== Hero ===== */
        .hero {
            margin-top: var(--nav-height);
            min-height: 620px;
            display: flex;
            align-items: center;
            position: relative;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.55;
            transform: scale(1.05);
            animation: heroZoom 20s ease-in-out infinite alternate;
        }
        @keyframes heroZoom { 0% { transform: scale(1.05); } 100% { transform: scale(1.15); } }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26,16,0,0.85) 0%, rgba(44,24,16,0.65) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding: 80px 0;
            max-width: 720px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(201, 168, 76, 0.2);
            border: 1px solid rgba(201, 168, 76, 0.3);
            color: var(--primary-light);
            padding: 6px 20px;
            border-radius: var(--radius-full);
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }
        .hero-badge .live-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            background: #FF4444;
            border-radius: 50%;
            animation: pulse 1.5s ease-in-out infinite;
        }
        @keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }
        .hero-title {
            font-size: 52px;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 18px;
            color: rgba(255,255,255,0.8);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.12);
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-item .num {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .hero-stat-item .label {
            font-size: 13px;
            color: rgba(255,255,255,0.6);
            margin-top: 4px;
        }

        /* ===== Section Base ===== */
        section { padding: var(--gap-section) 0; }
        .section-bg-light { background: var(--bg-light); }
        .section-bg-white { background: var(--bg-white); }
        .section-bg-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-bg-dark .section-title { color: var(--text-white); }
        .section-bg-dark .section-subtitle { color: rgba(255,255,255,0.7); }

        /* ===== Features / 核心说明 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 20px;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-gold);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--text-dark);
        }
        .feature-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== Category / 分类入口 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .category-card {
            display: flex;
            align-items: center;
            gap: 24px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 32px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-gold);
        }
        .category-card .cat-img {
            width: 100px;
            height: 100px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .category-card .cat-info { flex: 1; }
        .category-card .cat-info h3 {
            font-size: 20px;
            margin-bottom: 8px;
        }
        .category-card .cat-info p {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 12px;
        }
        .category-card .cat-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary-dark);
            background: var(--primary-light);
            padding: 2px 14px;
            border-radius: var(--radius-full);
        }

        /* ===== News / 资讯列表 (CMS) ===== */
        .news-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-gold);
        }
        .news-card .news-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .news-card .news-body {
            padding: 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .news-card .news-meta .cat {
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 2px 12px;
            border-radius: var(--radius-full);
            font-weight: 500;
        }
        .news-card .news-body h3 {
            font-size: 18px;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .news-card .news-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            flex: 1;
        }
        .news-card .news-body .read-more {
            margin-top: 16px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-dark);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .news-card .news-body .read-more:hover { gap: 10px; }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-light);
            color: var(--text-light);
            font-size: 16px;
        }

        /* ===== Data / 数据统计 ===== */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .data-card {
            text-align: center;
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.10);
            border-radius: var(--radius-md);
            padding: 36px 20px;
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }
        .data-card:hover {
            background: rgba(255,255,255,0.10);
            transform: translateY(-4px);
        }
        .data-card .num {
            font-size: 44px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .data-card .num-suffix {
            font-size: 20px;
            font-weight: 600;
        }
        .data-card .label {
            font-size: 15px;
            color: rgba(255,255,255,0.7);
            margin-top: 8px;
        }

        /* ===== Process / 流程 ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light), var(--primary));
            opacity: 0.3;
        }
        .step-item {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .step-number {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-dark);
            box-shadow: 0 4px 16px rgba(201, 168, 76, 0.3);
        }
        .step-item h4 {
            font-size: 18px;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }
        .section-bg-dark .step-item p { color: rgba(255,255,255,0.7); }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--border-gold); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            gap: 16px;
        }
        .faq-question .fa-chevron-down {
            color: var(--text-light);
            font-size: 14px;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .fa-chevron-down { transform: rotate(180deg); color: var(--primary); }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-box {
            background: linear-gradient(135deg, var(--bg-dark), var(--bg-mid));
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.10;
            z-index: 0;
        }
        .cta-box > * { position: relative; z-index: 1; }
        .cta-box h2 {
            font-size: 36px;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-box p {
            font-size: 17px;
            color: rgba(255,255,255,0.8);
            max-width: 520px;
            margin: 0 auto 32px;
        }
        .cta-box .btn { font-size: 16px; padding: 16px 40px; }

        /* ===== Countdown Bar ===== */
        .countdown-bar {
            background: linear-gradient(90deg, var(--secondary), var(--secondary-dark));
            padding: 12px 0;
            color: var(--text-white);
            font-size: 14px;
            text-align: center;
        }
        .countdown-bar .container {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
        }
        .countdown-bar .label { font-weight: 500; opacity: 0.9; }
        .countdown-bar .time {
            font-weight: 700;
            font-size: 18px;
            letter-spacing: 1px;
        }
        .countdown-bar .time span {
            background: rgba(255,255,255,0.15);
            padding: 4px 10px;
            border-radius: 6px;
            margin: 0 2px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 32px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .footer-logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand .footer-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-dark);
            font-weight: 900;
        }
        .footer-brand p { font-size: 14px; line-height: 1.7; max-width: 320px; }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            padding: 5px 0;
        }
        .footer-col a:hover { color: var(--primary); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--primary); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            :root { --gap-section: 60px; --gap-block: 32px; }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .data-grid { grid-template-columns: repeat(2, 1fr); }
            .process-steps { grid-template-columns: repeat(2, 1fr); }
            .process-steps::before { display: none; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
            .hero-title { font-size: 40px; }
            .section-title { font-size: 30px; }
        }

        @media (max-width: 768px) {
            :root { --gap-section: 48px; --gap-block: 28px; --nav-height: 64px; }
            .header-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 20px 24px;
                gap: 16px;
                box-shadow: var(--shadow-md);
                transform: translateY(-110%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 1px solid var(--border-light);
                z-index: 999;
            }
            .header-nav.open {
                transform: translateY(0);
                opacity: 1;
            }
            .header-nav a { font-size: 16px; padding: 8px 0; }
            .header-actions .header-search { display: none; }
            .header-actions .btn-sm { padding: 8px 16px; font-size: 12px; }
            .nav-toggle { display: flex; }

            .hero { min-height: 480px; }
            .hero-title { font-size: 32px; }
            .hero-desc { font-size: 16px; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stat-item .num { font-size: 26px; }

            .features-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .news-list { grid-template-columns: 1fr; }
            .data-grid { grid-template-columns: repeat(2, 1fr); }
            .process-steps { grid-template-columns: 1fr; gap: 32px; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-box { padding: 40px 24px; }
            .cta-box h2 { font-size: 28px; }
            .section-title { font-size: 26px; }
            .section-subtitle { font-size: 16px; }
        }

        @media (max-width: 520px) {
            .hero-title { font-size: 26px; }
            .hero-actions { flex-direction: column; }
            .hero-actions .btn { width: 100%; }
            .data-grid { grid-template-columns: 1fr; }
            .header-logo { font-size: 18px; }
            .header-logo .logo-icon { width: 32px; height: 32px; font-size: 16px; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 16px; }
        .mt-2 { margin-top: 32px; }
        .mb-1 { margin-bottom: 16px; }
        .mb-2 { margin-bottom: 32px; }
        .gap-sm { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* ===== Focus accessibility ===== */
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --accent: #d4a843;
            --accent-hover: #c49a3a;
            --accent-light: #f0e0b8;
            --bg-light: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #1a1a2e;
            --text-dark: #1e293b;
            --text-body: #334155;
            --text-light: #64748b;
            --text-white: #f1f5f9;
            --border-color: #e2e8f0;
            --border-light: #f1f5f9;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.15);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', 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;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
        }

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        /* focus accessibility */
        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            z-index: 1000;
            transition: var(--transition);
        }

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

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: var(--accent);
            font-size: 22px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        @media (max-width: 600px) {
            .logo-text {
                font-size: 16px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 18px;
            }
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            margin: 0 16px;
        }

        .header-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .header-nav a:hover {
            color: var(--primary);
            background: rgba(26, 58, 92, 0.06);
        }

        .header-nav a.active {
            color: var(--primary);
            background: rgba(26, 58, 92, 0.08);
            font-weight: 600;
        }

        .header-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: 24px;
            padding: 0 14px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .header-search:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(212, 168, 67, 0.15);
        }

        .header-search input {
            background: transparent;
            padding: 8px 10px 8px 0;
            font-size: 14px;
            color: var(--text-dark);
            min-width: 140px;
            border: none;
        }

        .header-search input::placeholder {
            color: var(--text-light);
        }

        .header-search button {
            color: var(--text-light);
            font-size: 14px;
            padding: 6px 0 6px 8px;
            transition: var(--transition);
        }
        .header-search button:hover {
            color: var(--accent);
        }

        .header-cta {
            padding: 8px 22px;
            font-size: 14px;
            font-weight: 600;
            border-radius: 24px;
            background: var(--accent);
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
            transition: var(--transition);
            border: none;
        }

        .header-cta:hover {
            background: var(--accent-hover);
            color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(212, 168, 67, 0.35);
        }

        .header-cta i {
            font-size: 13px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--primary);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-toggle:hover span {
            background: var(--accent);
        }

        /* Mobile nav */
        @media (max-width: 820px) {
            .header-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                z-index: 999;
                margin: 0;
            }

            .header-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .header-nav a {
                padding: 12px 16px;
                font-size: 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }

            .header-nav a.active::after {
                display: none;
            }

            .header-nav a.active {
                background: rgba(26, 58, 92, 0.08);
                border-left: 3px solid var(--accent);
            }

            .nav-toggle {
                display: flex;
            }

            .header-search {
                display: none;
            }

            .header-cta .btn-text-short {
                display: none;
            }

            .header-cta {
                padding: 8px 16px;
                font-size: 13px;
            }
        }

        @media (max-width: 480px) {
            .header-cta span {
                display: none;
            }
            .header-cta i {
                margin: 0;
            }
            .header-cta {
                padding: 8px 14px;
            }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            margin-top: var(--header-height);
            padding: 80px 0 60px;
            background: var(--primary);
            background-image: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
            min-height: 260px;
            display: flex;
            align-items: center;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-light), transparent);
            pointer-events: none;
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .page-banner h1 {
            font-size: 40px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 1px;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
        }

        .page-banner p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .page-banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-bottom: 20px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }

        .page-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
        }
        .page-banner .breadcrumb a:hover {
            color: var(--accent);
        }
        .page-banner .breadcrumb span {
            color: var(--accent);
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 60px 0 48px;
                min-height: 200px;
            }
            .page-banner h1 {
                font-size: 28px;
            }
            .page-banner p {
                font-size: 16px;
            }
        }

        @media (max-width: 480px) {
            .page-banner h1 {
                font-size: 24px;
            }
            .page-banner p {
                font-size: 14px;
            }
        }

        /* ===== Section Common ===== */
        .section {
            padding: 72px 0;
        }

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

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header .tag {
            display: inline-block;
            padding: 4px 16px;
            background: var(--accent-light);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 600;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .section-header p {
            color: var(--text-light);
            font-size: 17px;
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .section {
                padding: 52px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .section-header p {
                font-size: 15px;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        @media (max-width: 480px) {
            .section-header h2 {
                font-size: 22px;
            }
        }

        /* ===== Cards ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 28px;
        }

        .card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 28px 24px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent-light);
        }

        .card .card-icon {
            width: 52px;
            height: 52px;
            background: var(--accent-light);
            color: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 16px;
            transition: var(--transition);
        }

        .card:hover .card-icon {
            background: var(--accent);
            color: var(--primary-dark);
        }

        .card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .card p {
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .card .card-link {
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
        }
        .card .card-link:hover {
            color: var(--accent);
        }
        .card .card-link i {
            font-size: 12px;
            transition: var(--transition);
        }
        .card .card-link:hover i {
            transform: translateX(4px);
        }

        @media (max-width: 600px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .card {
                padding: 22px 18px;
            }
        }

        /* ===== Cover Cards (with image) ===== */
        .cover-card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 28px;
        }

        .cover-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .cover-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent-light);
        }

        .cover-card .cover-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            transition: var(--transition);
        }

        .cover-card:hover .cover-img {
            transform: scale(1.03);
        }

        .cover-card .cover-body {
            padding: 22px 22px 26px;
        }

        .cover-card .cover-tag {
            display: inline-block;
            padding: 2px 12px;
            background: var(--accent-light);
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 600;
            border-radius: 12px;
            margin-bottom: 10px;
        }

        .cover-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .cover-card p {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .cover-card .cover-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-light);
        }
        .cover-card .cover-meta i {
            margin-right: 4px;
        }

        @media (max-width: 640px) {
            .cover-card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .cover-card .cover-img {
                height: 170px;
            }
        }

        /* ===== List / Steps ===== */
        .step-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 32px;
            counter-reset: step;
        }

        .step-item {
            text-align: center;
            padding: 28px 20px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
        }

        .step-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }

        .step-item::before {
            counter-increment: step;
            content: counter(step);
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: var(--accent);
            font-size: 20px;
            font-weight: 700;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            transition: var(--transition);
        }

        .step-item:hover::before {
            background: var(--accent);
            color: var(--primary-dark);
        }

        .step-item h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .step-item p {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.7;
        }

        @media (max-width: 600px) {
            .step-list {
                grid-template-columns: 1fr 1fr;
                gap: 18px;
            }
            .step-item {
                padding: 20px 14px;
            }
            .step-item h4 {
                font-size: 16px;
            }
        }

        @media (max-width: 400px) {
            .step-list {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--accent-light);
        }

        .faq-question {
            width: 100%;
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            background: transparent;
            border: none;
            cursor: pointer;
            text-align: left;
            transition: var(--transition);
            gap: 12px;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            background: var(--bg-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-item.active .faq-question .faq-icon {
            background: var(--accent);
            color: var(--primary-dark);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            max-height: 240px;
            padding: 0 24px 20px;
        }

        @media (max-width: 600px) {
            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 18px;
                font-size: 14px;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            background-image: linear-gradient(135deg, var(--primary-dark), var(--primary), var(--primary-light));
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }

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

        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 18px;
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        .cta-section .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .cta-section .btn-primary {
            padding: 14px 36px;
            border-radius: 30px;
            font-size: 16px;
            font-weight: 600;
            background: var(--accent);
            color: var(--primary-dark);
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .cta-section .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 168, 67, 0.4);
        }

        .cta-section .btn-outline {
            padding: 13px 36px;
            border-radius: 30px;
            font-size: 16px;
            font-weight: 600;
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .cta-section .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
            background: rgba(255, 255, 255, 0.05);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 52px 0;
            }
            .cta-section h2 {
                font-size: 28px;
            }
            .cta-section p {
                font-size: 16px;
            }
            .cta-section .btn-primary,
            .cta-section .btn-outline {
                padding: 12px 28px;
                font-size: 15px;
            }
        }

        @media (max-width: 480px) {
            .cta-section .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 32px;
        }

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

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-brand .footer-logo .logo-icon {
            width: 38px;
            height: 38px;
            font-size: 20px;
        }

        .footer-brand .footer-logo span:last-child {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-white);
        }

        .footer-brand p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            padding: 4px 0;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 600px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer {
                padding: 40px 0 24px;
            }
            .footer .container {
                padding: 0 16px;
            }
        }

        /* ===== Extra: Data block ===== */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 24px;
        }

        .data-item {
            text-align: center;
            padding: 24px 16px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .data-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent-light);
        }

        .data-item .number {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .data-item .label {
            font-size: 15px;
            color: var(--text-light);
            font-weight: 500;
        }

        @media (max-width: 600px) {
            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .data-item .number {
                font-size: 28px;
            }
        }

        @media (max-width: 380px) {
            .data-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Content Article Style ===== */
        .content-body {
            max-width: 800px;
            margin: 0 auto;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
        }

        .content-body h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 32px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent-light);
        }

        .content-body h2:first-child {
            margin-top: 0;
        }

        .content-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 24px 0 12px;
        }

        .content-body p {
            margin-bottom: 16px;
            color: var(--text-body);
            line-height: 1.8;
        }

        .content-body ul {
            list-style: disc;
            padding-left: 24px;
            margin-bottom: 16px;
        }

        .content-body ul li {
            margin-bottom: 6px;
            color: var(--text-body);
        }

        .content-body .highlight-box {
            background: var(--accent-light);
            border-left: 4px solid var(--accent);
            padding: 18px 22px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin-bottom: 20px;
        }

        .content-body .highlight-box p {
            margin-bottom: 0;
            color: var(--primary-dark);
        }

        @media (max-width: 768px) {
            .content-body {
                padding: 24px 20px;
            }
            .content-body h2 {
                font-size: 22px;
            }
            .content-body h3 {
                font-size: 18px;
            }
        }

        @media (max-width: 480px) {
            .content-body {
                padding: 18px 14px;
            }
        }

        /* ===== Button base ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            border-radius: 24px;
            padding: 10px 24px;
            font-size: 15px;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(212, 168, 67, 0.35);
        }

        .btn-outline-primary {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline-primary:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 6px 16px;
            font-size: 13px;
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== Responsive fine-tune ===== */
        @media (max-width: 768px) {
            .page-banner .breadcrumb {
                font-size: 13px;
                flex-wrap: wrap;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a4a;
            --primary-dark: #0f1a30;
            --primary-light: #2a3a5a;
            --accent: #c9a855;
            --accent-light: #e8c86a;
            --accent-dark: #a88835;
            --bg: #ffffff;
            --bg-alt: #f5f7fa;
            --bg-dark: #1a2a4a;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-white: #ffffff;
            --border: #e5e7eb;
            --shadow: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-hover: 0 8px 30px rgba(0,0,0,0.12);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --transition: 0.3s ease;
            --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --header-height: 70px;
        }

        /* ===== Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            padding-top: var(--header-height);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        a:hover { color: var(--accent); }
        input, button, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--primary); }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== Header ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
            transition: var(--transition);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: var(--accent-light);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            box-shadow: 0 2px 8px rgba(26,42,74,0.25);
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .header-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            position: relative;
            padding: 6px 0;
            transition: var(--transition);
        }
        .header-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transition: var(--transition);
        }
        .header-nav a:hover { color: var(--primary); }
        .header-nav a:hover::after { width: 100%; }
        .header-nav a.active { color: var(--primary); font-weight: 600; }
        .header-nav a.active::after { width: 100%; background: var(--accent); }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-alt);
            border-radius: 24px;
            padding: 0 16px;
            border: 1px solid transparent;
            transition: var(--transition);
            height: 40px;
        }
        .header-search:focus-within {
            border-color: var(--accent);
            background: var(--bg);
            box-shadow: 0 0 0 3px rgba(201,168,85,0.15);
        }
        .header-search input {
            background: transparent;
            border: none;
            padding: 8px 0;
            min-width: 140px;
            font-size: 14px;
            color: var(--text);
        }
        .header-search input::placeholder { color: var(--text-light); }
        .header-search button {
            color: var(--text-light);
            font-size: 16px;
            padding: 4px 0 4px 10px;
            transition: var(--transition);
        }
        .header-search button:hover { color: var(--accent); }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            cursor: pointer;
        }
        .nav-toggle span {
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* ===== Button ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            border: 2px solid transparent;
            cursor: pointer;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: var(--primary-dark);
            border-color: var(--accent);
            box-shadow: 0 4px 14px rgba(201,168,85,0.35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(201,168,85,0.45);
            color: var(--primary-dark);
        }
        .btn-primary:active { transform: translateY(0); }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border-color: rgba(255,255,255,0.6);
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.12);
            border-color: var(--text-white);
            color: var(--text-white);
        }
        .btn-sm { padding: 8px 20px; font-size: 14px; border-radius: 24px; }
        .btn-lg { padding: 16px 36px; font-size: 17px; }

        /* ===== Banner ===== */
        .article-banner {
            position: relative;
            padding: 80px 0 60px;
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            color: var(--text-white);
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,48,0.88) 0%, rgba(26,42,74,0.72) 100%);
            z-index: 1;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
        }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255,255,255,0.65);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .article-banner .breadcrumb a { color: rgba(255,255,255,0.65); }
        .article-banner .breadcrumb a:hover { color: var(--accent-light); }
        .article-banner .breadcrumb span { color: rgba(255,255,255,0.4); }
        .article-banner .breadcrumb .current { color: var(--accent-light); }
        .article-banner h1 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-white);
            max-width: 800px;
            line-height: 1.25;
            margin-bottom: 20px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
            font-size: 14px;
            color: rgba(255,255,255,0.75);
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .meta-item i { color: var(--accent-light); }
        .article-meta .category-tag {
            display: inline-block;
            padding: 2px 14px;
            border-radius: 20px;
            background: rgba(201,168,85,0.2);
            color: var(--accent-light);
            font-size: 13px;
            font-weight: 500;
            border: 1px solid rgba(201,168,85,0.3);
        }

        /* ===== 文章正文 ===== */
        .article-main {
            padding: 60px 0 40px;
            background: var(--bg);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .article-content {
            background: var(--bg);
            border-radius: var(--radius);
            overflow: hidden;
        }
        .article-featured-image {
            width: 100%;
            border-radius: var(--radius);
            overflow: hidden;
            margin-bottom: 32px;
            box-shadow: var(--shadow);
        }
        .article-featured-image img {
            width: 100%;
            height: auto;
            max-height: 480px;
            object-fit: cover;
        }
        .article-body {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text);
        }
        .article-body p {
            margin-bottom: 1.2em;
        }
        .article-body h2, .article-body h3, .article-body h4 {
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            color: var(--primary);
        }
        .article-body h2 { font-size: 24px; }
        .article-body h3 { font-size: 20px; }
        .article-body ul, .article-body ol {
            margin-bottom: 1.2em;
            padding-left: 24px;
        }
        .article-body ul li { list-style: disc; margin-bottom: 6px; }
        .article-body ol li { list-style: decimal; margin-bottom: 6px; }
        .article-body a { color: var(--accent-dark); text-decoration: underline; }
        .article-body a:hover { color: var(--accent); }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            padding: 16px 20px;
            margin: 1.2em 0;
            background: var(--bg-alt);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-body img {
            border-radius: var(--radius-sm);
            margin: 1.2em 0;
            box-shadow: var(--shadow);
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.2em 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }
        .article-body th, .article-body td {
            padding: 12px 16px;
            border: 1px solid var(--border);
            text-align: left;
        }
        .article-body th {
            background: var(--primary);
            color: var(--text-white);
            font-weight: 600;
        }
        .article-body td { background: var(--bg); }
        .article-body code {
            background: var(--bg-alt);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 14px;
            color: var(--accent-dark);
        }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--accent);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i { color: var(--accent); }
        .sidebar-list { display: flex; flex-direction: column; gap: 12px; }
        .sidebar-list a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            background: var(--bg-alt);
            transition: var(--transition);
            font-size: 14px;
            line-height: 1.5;
            color: var(--text);
        }
        .sidebar-list a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateX(4px);
        }
        .sidebar-list a .list-num {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
        }
        .sidebar-list a:hover .list-num {
            background: var(--primary-dark);
        }
        .sidebar-cta {
            text-align: center;
        }
        .sidebar-cta p {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .sidebar-cta .btn { width: 100%; }

        /* ===== 内容未找到 ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg);
        }
        .not-found-box .not-found-icon {
            font-size: 64px;
            color: var(--accent);
            margin-bottom: 24px;
            opacity: 0.5;
        }
        .not-found-box h2 {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-light);
            margin-bottom: 24px;
            font-size: 16px;
        }
        .not-found-box .btn { display: inline-flex; }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 60px 0 40px;
            background: var(--bg-alt);
        }
        .related-section .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 32px;
            text-align: center;
            position: relative;
        }
        .related-section .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--accent);
            margin: 12px auto 0;
            border-radius: 2px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }
        .related-card {
            background: var(--bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .related-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .related-card .card-body {
            padding: 20px 18px 18px;
        }
        .related-card .card-body h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body p {
            font-size: 14px;
            color: var(--text-light);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .related-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-light);
        }
        .related-card .card-meta .cat {
            padding: 2px 12px;
            border-radius: 12px;
            background: rgba(201,168,85,0.12);
            color: var(--accent-dark);
            font-size: 12px;
            font-weight: 500;
        }

        /* ===== CTA ===== */
        .article-cta {
            padding: 60px 0;
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }
        .article-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,48,0.9), rgba(26,42,74,0.75));
            z-index: 1;
        }
        .article-cta .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .article-cta h2 {
            font-size: 30px;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .article-cta p {
            font-size: 16px;
            color: rgba(255,255,255,0.75);
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .article-cta .btn-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.8);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .footer-brand .footer-logo .logo-icon {
            width: 36px;
            height: 36px;
            font-size: 18px;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: var(--primary-dark);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--accent);
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--accent-light); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent-light); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
        }
        @media (max-width: 768px) {
            .header-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--bg);
                flex-direction: column;
                padding: 24px 20px 32px;
                gap: 16px;
                box-shadow: 0 12px 30px rgba(0,0,0,0.1);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 2px solid var(--accent);
            }
            .header-nav.open {
                transform: translateY(0);
                opacity: 1;
            }
            .header-nav a { font-size: 16px; padding: 8px 0; width: 100%; }
            .header-nav a::after { display: none; }
            .nav-toggle { display: flex; }
            .header-search input { min-width: 100px; }
            .header-cta .btn-text { display: none; }
            .article-banner { padding: 60px 0 40px; }
            .article-banner h1 { font-size: 26px; }
            .article-meta { gap: 14px; font-size: 13px; }
            .article-sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; align-items: flex-start; }
            .article-cta h2 { font-size: 24px; }
            .not-found-box { padding: 60px 20px; }
            .not-found-box .not-found-icon { font-size: 48px; }
        }
        @media (max-width: 520px) {
            .logo-text { font-size: 16px; }
            .header-search input { min-width: 80px; }
            .article-banner h1 { font-size: 22px; }
            .related-grid { grid-template-columns: 1fr; }
            .article-cta .btn-group { flex-direction: column; width: 100%; }
            .article-cta .btn-group .btn { width: 100%; }
            .footer-brand p { max-width: 100%; }
        }

        /* ===== 辅助 ===== */
        .text-accent { color: var(--accent); }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-12 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }