/* roulang page: index */
:root {
            --color-primary: #1a2744;
            --color-primary-light: #243356;
            --color-accent: #e8943a;
            --color-accent-hover: #d17f2f;
            --color-accent-light: #fdf0e2;
            --color-bg: #ffffff;
            --color-bg-alt: #f5f6f8;
            --color-bg-card: #ffffff;
            --color-text: #1a1a1a;
            --color-text-secondary: #5f6b7a;
            --color-text-light: #8b95a5;
            --color-border: #e2e6ea;
            --color-border-light: #eef0f3;
            --color-success: #2ecc71;
            --color-warning: #f39c12;
            --color-danger: #e74c3c;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 32px rgba(0,0,0,0.1), 0 4px 8px rgba(0,0,0,0.05);
            --shadow-xl: 0 20px 48px rgba(0,0,0,0.12), 0 8px 16px rgba(0,0,0,0.06);
            --radius-xs: 4px;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --transition-fast: 0.15s ease;
            --transition-normal: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 68px;
        }

        *, *::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-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--color-text);
            background: var(--color-bg);
            min-height: 100vh;
        }

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

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

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

        button {
            cursor: pointer;
            border: none;
            outline: none;
        }

        input {
            outline: none;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 10px 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(232,148,58,0.12);
        }

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

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-bg);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .header-logo i {
            font-size: 1.5rem;
            color: var(--color-accent);
        }
        .header-logo:hover {
            color: var(--color-primary);
            opacity: 0.85;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }
        .nav-links li a {
            display: block;
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links li a:hover {
            color: var(--color-accent);
            background: var(--color-accent-light);
        }
        .nav-links li a.active {
            color: var(--color-accent);
            background: var(--color-accent-light);
            font-weight: 600;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--color-bg-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-full);
            padding: 8px 16px;
            gap: 8px;
            transition: all var(--transition-fast);
        }
        .nav-search:focus-within {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(232,148,58,0.1);
            background: var(--color-bg);
        }
        .nav-search input {
            border: none;
            background: transparent;
            padding: 0;
            width: 140px;
            font-size: 0.9rem;
            color: var(--color-text);
        }
        .nav-search input:focus {
            box-shadow: none;
            outline: none;
        }
        .nav-search i {
            color: var(--color-text-light);
            font-size: 0.9rem;
        }
        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
            transition: all var(--transition-fast);
            letter-spacing: 0.01em;
        }
        .btn-nav-cta:hover {
            background: var(--color-accent-hover);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .btn-nav-cta:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text);
            padding: 8px;
            cursor: pointer;
            border-radius: var(--radius-xs);
            transition: background var(--transition-fast);
        }
        .mobile-menu-toggle:hover {
            background: var(--color-bg-alt);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--color-bg);
            z-index: 999;
            padding: 20px 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            display: block;
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--color-accent);
            background: var(--color-accent-light);
        }
        .mobile-menu .nav-search-mobile {
            display: flex;
            align-items: center;
            background: var(--color-bg-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-full);
            padding: 10px 18px;
            gap: 8px;
            margin-top: 8px;
        }
        .mobile-menu .nav-search-mobile input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 0;
        }
        .mobile-menu .nav-search-mobile input:focus {
            box-shadow: none;
        }
        .mobile-menu .btn-nav-cta {
            justify-content: center;
            margin-top: 12px;
            padding: 14px 22px;
            border-radius: var(--radius-full);
            font-size: 1rem;
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            min-height: 560px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #1a2744 0%, #1e3052 30%, #243a5e 60%, #1a2744 100%);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, transparent 30%, rgba(26,39,68,0.7) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 48px;
            padding-top: 60px;
            padding-bottom: 60px;
        }
        .hero-content {
            flex: 1;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(232,148,58,0.2);
            color: var(--color-accent);
            border: 1px solid rgba(232,148,58,0.35);
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }
        .hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }
        .hero h1 span {
            color: var(--color-accent);
        }
        .hero p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.8);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 540px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 16px rgba(232,148,58,0.35);
        }
        .btn-primary:hover {
            background: var(--color-accent-hover);
            color: #fff;
            box-shadow: 0 6px 24px rgba(232,148,58,0.45);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(232,148,58,0.3);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.4);
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.08);
            color: #fff;
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            gap: 36px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: center;
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.12);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            min-width: 120px;
            backdrop-filter: blur(4px);
            transition: all var(--transition-normal);
        }
        .hero-stat:hover {
            background: rgba(255,255,255,0.1);
            border-color: rgba(255,255,255,0.2);
            transform: translateY(-3px);
        }
        .hero-stat .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1;
            margin-bottom: 6px;
        }
        .hero-stat .stat-label {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            font-weight: 500;
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: 72px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-tag {
            display: inline-block;
            padding: 5px 14px;
            background: var(--color-accent-light);
            color: var(--color-accent);
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 10px;
            letter-spacing: 0.01em;
        }
        .section-header p {
            font-size: 1rem;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }

        /* ========== SERVICES GRID ========== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .service-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }
        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--color-accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-slow);
        }
        .service-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: transparent;
            transform: translateY(-4px);
        }
        .service-card:hover::before {
            transform: scaleX(1);
        }
        .service-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 20px;
            background: var(--color-accent-light);
            color: var(--color-accent);
            transition: all var(--transition-normal);
        }
        .service-card:hover .service-icon {
            background: var(--color-accent);
            color: #fff;
        }
        .service-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .service-card p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ========== CATEGORY ENTRY ========== */
        .category-entry-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            align-items: stretch;
        }
        .category-entry-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
        }
        .category-entry-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .category-entry-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .category-entry-body {
            padding: 24px 28px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .category-entry-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .category-entry-body p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .btn-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-accent);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
        }
        .btn-link:hover {
            gap: 10px;
            color: var(--color-accent-hover);
        }
        .btn-link i {
            transition: transform var(--transition-fast);
        }
        .btn-link:hover i {
            transform: translateX(3px);
        }

        /* ========== NEWS LIST ========== */
        .news-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .news-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            padding: 24px 26px;
            transition: all var(--transition-normal);
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .news-card:hover {
            box-shadow: var(--shadow-md);
            border-color: transparent;
            transform: translateY(-2px);
        }
        .news-card-thumb {
            width: 100px;
            height: 70px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--color-bg-alt);
        }
        .news-card-content {
            flex: 1;
            min-width: 0;
        }
        .news-card-content .news-tag {
            display: inline-block;
            padding: 3px 10px;
            background: var(--color-accent-light);
            color: var(--color-accent);
            border-radius: var(--radius-xs);
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .news-card-content h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 4px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-content .news-meta {
            font-size: 0.8rem;
            color: var(--color-text-light);
        }
        .news-card-content a:hover h4 {
            color: var(--color-accent);
        }
        .news-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--color-text-light);
            font-size: 0.95rem;
            grid-column: 1 / -1;
        }

        /* ========== STATS BAR ========== */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .stat-item .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1;
            margin-bottom: 8px;
        }
        .stat-item .stat-desc {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            font-weight: 500;
        }

        /* ========== STEPS ========== */
        .steps-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            position: relative;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 36px 28px 28px;
            transition: all var(--transition-normal);
            counter-increment: step;
        }
        .step-item::before {
            content: counter(step);
            position: absolute;
            top: -20px;
            left: 28px;
            width: 40px;
            height: 40px;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: var(--shadow-md);
        }
        .step-item:hover {
            box-shadow: var(--shadow-lg);
            border-color: transparent;
            transform: translateY(-3px);
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 6px;
            margin-top: 8px;
        }
        .step-item p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-border);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            background: none;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            text-align: left;
            gap: 12px;
            transition: all var(--transition-fast);
        }
        .faq-question:hover {
            background: var(--color-bg-alt);
        }
        .faq-question i {
            font-size: 0.8rem;
            color: var(--color-text-light);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: var(--color-primary);
            color: #fff;
            text-align: center;
            padding: 64px 0;
        }
        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }
        .cta-section p {
            font-size: 1rem;
            color: rgba(255,255,255,0.75);
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn-primary {
            box-shadow: 0 4px 20px rgba(232,148,58,0.5);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #141e30;
            color: rgba(255,255,255,0.7);
            padding: 48px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col p {
            font-size: 0.85rem;
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.45);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero .container {
                flex-direction: column;
                text-align: center;
            }
            .hero-stats {
                justify-content: center;
            }
            .hero p {
                max-width: 100%;
            }
            .hero-actions {
                justify-content: center;
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .nav-links {
                gap: 2px;
            }
            .nav-links li a {
                padding: 8px 12px;
                font-size: 0.85rem;
            }
            .nav-search input {
                width: 100px;
            }
            .hero h1 {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links, .nav-right .nav-search, .nav-right .btn-nav-cta {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .hero {
                min-height: 440px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .news-list {
                grid-template-columns: 1fr;
            }
            .category-entry-grid {
                grid-template-columns: 1fr;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .steps-list {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat {
                padding: 20px 24px;
                min-width: 90px;
            }
            .hero-stat .stat-number {
                font-size: 1.8rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero {
                min-height: 380px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero p {
                font-size: 0.95rem;
            }
            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }
            .btn-primary, .btn-outline {
                justify-content: center;
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .stats-bar {
                grid-template-columns: 1fr;
            }
            .stat-item .stat-num {
                font-size: 1.8rem;
            }
            .service-card {
                padding: 24px 20px;
            }
            .hero-stats {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-stat {
                display: flex;
                align-items: center;
                justify-content: space-between;
                padding: 16px 20px;
                text-align: left;
            }
            .hero-stat .stat-number {
                font-size: 1.5rem;
                margin-bottom: 0;
            }
            .category-entry-card img {
                height: 160px;
            }
        }

/* roulang page: article */
:root {
            --primary: #1e2d5b;
            --primary-light: #2c4178;
            --primary-dark: #151f40;
            --accent: #f0a030;
            --accent-hover: #e89218;
            --accent-light: #fef7ed;
            --danger: #e8553d;
            --danger-hover: #d14430;
            --bg: #f4f5f9;
            --bg-alt: #eef1f7;
            --card: #ffffff;
            --text: #1a1a2e;
            --text-secondary: #555b6e;
            --text-weak: #8a8fa0;
            --border: #e2e5ee;
            --border-light: #eef0f5;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 8px 36px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
            --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --max-width: 1240px;
            --nav-height: 68px;
        }

        *, *::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-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        ul, ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER & NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #ffffff;
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

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

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-size: 20px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .logo-text span {
            color: var(--accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.93rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }

        .nav-links a:hover {
            color: var(--primary);
            background: var(--bg-alt);
        }

        .nav-links a.active {
            color: #ffffff;
            background: var(--primary);
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }

        .nav-links a.active:hover {
            background: var(--primary-light);
            color: #ffffff;
        }

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

        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1.5px solid var(--border);
            border-radius: 22px;
            padding: 7px 14px;
            gap: 8px;
            transition: all var(--transition);
            width: 180px;
        }

        .nav-search:focus-within {
            border-color: var(--primary);
            background: #ffffff;
            box-shadow: 0 0 0 3px rgba(30, 45, 91, 0.06);
            width: 220px;
        }

        .nav-search i {
            color: var(--text-weak);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .nav-search input {
            width: 100%;
            font-size: 0.88rem;
            color: var(--text);
            background: transparent;
            padding: 0;
        }

        .nav-search input::placeholder {
            color: var(--text-weak);
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            background: var(--accent);
            color: #ffffff;
            font-weight: 600;
            font-size: 0.9rem;
            border-radius: 22px;
            white-space: nowrap;
            transition: all var(--transition);
            cursor: pointer;
            box-shadow: 0 2px 8px rgba(240, 160, 48, 0.25);
        }

        .btn-nav-cta:hover {
            background: var(--accent-hover);
            box-shadow: 0 4px 16px rgba(240, 160, 48, 0.35);
            transform: translateY(-1px);
            color: #ffffff;
        }

        .mobile-menu-toggle {
            display: none;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 1.3rem;
            color: var(--text);
            transition: all var(--transition);
            flex-shrink: 0;
        }

        .mobile-menu-toggle:hover {
            background: var(--bg-alt);
        }

        /* ========== ARTICLE BREADCRUMB BANNER ========== */
        .article-banner {
            background: linear-gradient(160deg, #1e2d5b 0%, #2c4178 40%, #1a2747 100%);
            position: relative;
            padding: 44px 0 52px;
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }

        .article-banner::after {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(240, 160, 48, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .article-banner .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 14px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: #ffffff;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.7rem;
        }

        .breadcrumb .current {
            color: #ffffff;
            font-weight: 500;
            pointer-events: none;
        }

        .article-meta-row {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        .article-category-tag {
            display: inline-flex;
            align-items: center;
            padding: 5px 14px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 500;
            color: #ffffff;
            backdrop-filter: blur(4px);
        }

        .article-publish-date {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.8);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-publish-date i {
            font-size: 0.8rem;
        }

        /* ========== MAIN CONTENT AREA ========== */
        .article-main {
            padding: 0 0 60px;
        }

        .article-main .container {
            max-width: 900px;
        }

        .article-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            margin-top: -28px;
            position: relative;
            z-index: 3;
            overflow: hidden;
        }

        .article-hero-image {
            width: 100%;
            aspect-ratio: 21 / 9;
            object-fit: cover;
            display: block;
            background: var(--bg-alt);
        }

        .article-body {
            padding: 36px 40px 44px;
        }

        .article-body h1 {
            font-size: 1.85rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.35;
            margin-bottom: 8px;
            letter-spacing: 0.01em;
        }

        .article-body .sub-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-weak);
            margin-bottom: 28px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-light);
        }

        .article-body .sub-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .article-content {
            font-size: 1.02rem;
            line-height: 1.85;
            color: var(--text);
        }

        .article-content h2 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            margin: 32px 0 14px;
            padding-left: 14px;
            border-left: 3px solid var(--accent);
        }

        .article-content h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text);
            margin: 24px 0 10px;
        }

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

        .article-content ul,
        .article-content ol {
            margin: 12px 0 16px 20px;
        }

        .article-content ul {
            list-style: disc;
        }

        .article-content ol {
            list-style: decimal;
        }

        .article-content li {
            margin-bottom: 8px;
            padding-left: 4px;
        }

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

        .article-content blockquote {
            margin: 20px 0;
            padding: 18px 22px;
            background: var(--accent-light);
            border-left: 4px solid var(--accent);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-secondary);
        }

        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            font-weight: 500;
        }

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

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

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 0.9rem;
        }

        .article-content th,
        .article-content td {
            padding: 10px 14px;
            border: 1px solid var(--border);
            text-align: left;
        }

        .article-content th {
            background: var(--bg-alt);
            font-weight: 600;
            color: var(--primary);
        }

        .article-tags {
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }

        .article-tags span.label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-secondary);
        }

        .article-tags .tag {
            display: inline-flex;
            padding: 5px 14px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            font-size: 0.82rem;
            color: var(--text-secondary);
            transition: all var(--transition);
            cursor: pointer;
        }

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

        /* ========== NOT FOUND STATE ========== */
        .not-found-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            margin-top: -28px;
            position: relative;
            z-index: 3;
            padding: 60px 40px;
            text-align: center;
        }

        .not-found-card .nf-icon {
            font-size: 4rem;
            color: var(--text-weak);
            margin-bottom: 20px;
            display: block;
        }

        .not-found-card h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .not-found-card p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 0.95rem;
        }

        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 26px;
            background: var(--primary);
            color: #ffffff;
            font-weight: 600;
            border-radius: 24px;
            transition: all var(--transition);
            cursor: pointer;
            font-size: 0.95rem;
        }

        .btn-back-home:hover {
            background: var(--primary-light);
            box-shadow: var(--shadow);
            transform: translateY(-2px);
            color: #ffffff;
        }

        /* ========== RELATED POSTS ========== */
        .related-section {
            padding: 50px 0 60px;
        }

        .related-section .container {
            max-width: var(--max-width);
        }

        .section-header {
            text-align: center;
            margin-bottom: 36px;
        }

        .section-header h2 {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            letter-spacing: 0.01em;
        }

        .section-header .divider {
            display: inline-block;
            width: 50px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
            margin-top: 4px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: var(--card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-xs);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .related-card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            background: var(--bg-alt);
            display: block;
        }

        .related-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .related-card-cat {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .related-card-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition);
        }

        .related-card:hover .related-card-title {
            color: var(--primary);
        }

        .related-card-date {
            font-size: 0.8rem;
            color: var(--text-weak);
            margin-top: auto;
            display: flex;
            align-items: center;
            gap: 5px;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 56px 0 64px;
            background: linear-gradient(160deg, var(--primary) 0%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.06;
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 700px;
        }

        .cta-section h2 {
            font-size: 1.65rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1rem;
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 32px;
            background: var(--accent);
            color: #ffffff;
            font-weight: 700;
            font-size: 1rem;
            border-radius: 26px;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 6px 22px rgba(240, 160, 48, 0.35);
        }

        .btn-cta-large:hover {
            background: #ffffff;
            color: var(--primary);
            box-shadow: 0 8px 28px rgba(255, 255, 255, 0.3);
            transform: translateY(-3px);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #141b2d;
            color: rgba(255, 255, 255, 0.75);
            padding: 50px 0 0;
        }

        .site-footer .container {
            max-width: var(--max-width);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-col h4 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer-col p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
        }

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

        .footer-col ul li a {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-col ul li a:hover {
            color: var(--accent);
            transform: translateX(3px);
        }

        .footer-col ul li a i {
            font-size: 0.8rem;
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 22px 0;
            font-size: 0.84rem;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .nav-search {
                width: 140px;
            }
            .nav-search:focus-within {
                width: 170px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .article-body {
                padding: 28px 28px 36px;
            }
            .article-body h1 {
                font-size: 1.55rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 60px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 16px 20px;
                gap: 2px;
                box-shadow: var(--shadow-lg);
                border-bottom: 2px solid var(--border-light);
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                justify-content: center;
            }
            .nav-search {
                display: none;
            }
            .btn-nav-cta {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .related-grid {
                grid-template-columns: 1fr;
                max-width: 440px;
                margin: 0 auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .article-body {
                padding: 22px 18px 28px;
            }
            .article-body h1 {
                font-size: 1.3rem;
            }
            .article-content {
                font-size: 0.95rem;
                line-height: 1.75;
            }
            .article-banner {
                padding: 30px 0 38px;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .logo-text {
                font-size: 1rem;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 17px;
            }
            .article-body {
                padding: 18px 14px 22px;
            }
            .article-body h1 {
                font-size: 1.15rem;
            }
            .article-body .sub-meta {
                gap: 8px;
                font-size: 0.78rem;
            }
            .article-content h2 {
                font-size: 1.15rem;
            }
            .article-content h3 {
                font-size: 1rem;
            }
            .not-found-card {
                padding: 40px 20px;
            }
            .not-found-card .nf-icon {
                font-size: 3rem;
            }
            .related-grid {
                max-width: 100%;
            }
            .article-hero-image {
                aspect-ratio: 16 / 10;
            }
            .btn-cta-large {
                padding: 11px 24px;
                font-size: 0.9rem;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1a3250;
            --color-primary-light: #243d5e;
            --color-primary-dark: #0f1f33;
            --color-accent: #d4942b;
            --color-accent-light: #e8b84f;
            --color-accent-dark: #b0771f;
            --color-cta: #e0453b;
            --color-cta-hover: #c0392f;
            --color-bg: #f4f5f7;
            --color-bg-alt: #eef0f4;
            --color-surface: #ffffff;
            --color-text: #1a1a2e;
            --color-text-secondary: #5a6070;
            --color-text-muted: #88909c;
            --color-border: #dde1e7;
            --color-border-light: #eef0f4;
            --color-tag-bg: #e8ecf2;
            --color-tag-text: #3d5068;
            --color-success: #27ae60;
            --color-warning: #f39c12;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.12);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --max-width: 1200px;
            --header-height: 68px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent);
        }
        a:focus-visible {
            outline: 3px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 3px;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible {
            outline: 3px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--color-text);
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ============ HEADER ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            width: 100%;
        }
        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.25rem;
            font-weight: 800;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: 0.5px;
        }
        .logo-text span {
            color: var(--color-accent);
        }
        .site-header .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .site-header .nav-links li {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .site-header .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
            position: relative;
        }
        .site-header .nav-links a:hover {
            color: var(--color-primary);
            background: var(--color-bg-alt);
        }
        .site-header .nav-links a.active {
            color: var(--color-primary);
            background: var(--color-bg-alt);
            font-weight: 600;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .btn-subscribe {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 9px 18px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.9rem;
            background: var(--color-cta);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }
        .btn-subscribe:hover {
            background: var(--color-cta-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .btn-subscribe:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        /* 移动端汉堡菜单 */
        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            z-index: 1001;
        }
        .mobile-menu-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all var(--transition-base);
        }
        .mobile-menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .mobile-menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .mobile-menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ============ BREADCRUMB ============ */
        .breadcrumb-bar {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            padding: 12px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-secondary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .breadcrumb .separator {
            color: var(--color-border);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ============ CATEGORY BANNER ============ */
        .category-banner {
            position: relative;
            background: var(--color-primary-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 64px 0;
            overflow: hidden;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 31, 51, 0.88) 0%, rgba(26, 50, 80, 0.78) 60%, rgba(212, 148, 43, 0.35) 100%);
            z-index: 1;
        }
        .category-banner .container {
            position: relative;
            z-index: 2;
        }
        .category-banner-content {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 700px;
        }
        .category-banner .category-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(6px);
            color: #fff;
            padding: 6px 14px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 500;
            width: fit-content;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .category-banner h1 {
            font-size: 2.5rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            line-height: 1.2;
        }
        .category-banner .banner-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.6;
        }
        .category-banner .banner-stats {
            display: flex;
            gap: 28px;
            margin-top: 8px;
            flex-wrap: wrap;
        }
        .banner-stat-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.95rem;
        }
        .banner-stat-item .stat-num {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-accent-light);
        }

        /* ============ MAIN LAYOUT ============ */
        .category-main {
            flex: 1;
            padding: 40px 0 60px;
        }
        .category-layout {
            display: flex;
            gap: 32px;
            align-items: flex-start;
        }
        .category-content {
            flex: 1;
            min-width: 0;
        }
        .category-sidebar {
            width: 320px;
            flex-shrink: 0;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        /* ============ FILTER BAR ============ */
        .filter-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            background: var(--color-surface);
            padding: 14px 20px;
            border-radius: var(--radius-md);
            margin-bottom: 24px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
        }
        .filter-tabs {
            display: flex;
            gap: 4px;
            flex-wrap: wrap;
        }
        .filter-tab {
            padding: 7px 15px;
            border-radius: var(--radius-full);
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            border: 1px solid transparent;
            background: transparent;
        }
        .filter-tab:hover {
            color: var(--color-primary);
            background: var(--color-bg-alt);
        }
        .filter-tab.active {
            color: #fff;
            background: var(--color-primary);
            font-weight: 600;
            border-color: var(--color-primary);
        }
        .filter-sort {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .filter-sort label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            white-space: nowrap;
        }
        .filter-sort select {
            padding: 7px 12px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            background: var(--color-surface);
            color: var(--color-text);
            font-size: 0.875rem;
            cursor: pointer;
            transition: border-color var(--transition-fast);
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235a6070' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'%3E%3C/path%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 10px center;
            padding-right: 32px;
        }
        .filter-sort select:focus {
            outline: none;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(212, 148, 43, 0.12);
        }

        /* ============ ARTICLE CARDS GRID ============ */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-bottom: 32px;
        }
        .article-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-xs);
        }
        .article-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-border);
        }
        .article-card-thumb {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--color-bg-alt);
        }
        .article-card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .article-card:hover .article-card-thumb img {
            transform: scale(1.04);
        }
        .article-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-accent);
            color: #fff;
            padding: 4px 10px;
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 600;
            z-index: 2;
            letter-spacing: 0.5px;
        }
        .article-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }
        .article-card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.45;
            color: var(--color-text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }
        .article-card:hover .article-card-body h3 {
            color: var(--color-primary);
        }
        .article-card-body .card-excerpt {
            font-size: 0.875rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .article-card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            padding-top: 4px;
            border-top: 1px solid var(--color-border-light);
        }
        .article-card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .article-card-meta i {
            font-size: 0.75rem;
        }

        /* ============ PAGINATION ============ */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 8px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            border: 1px solid var(--color-border);
            background: var(--color-surface);
            color: var(--color-text-secondary);
            cursor: pointer;
            text-decoration: none;
        }
        .pagination a:hover {
            background: var(--color-bg-alt);
            border-color: var(--color-accent);
            color: var(--color-accent);
        }
        .pagination .current {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            font-weight: 700;
            cursor: default;
        }
        .pagination .dots {
            border: none;
            background: transparent;
            cursor: default;
            color: var(--color-text-muted);
            min-width: auto;
            padding: 0 4px;
        }
        .pagination .prev-next {
            font-weight: 600;
        }

        /* ============ SIDEBAR ============ */
        .sidebar-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
        }
        .sidebar-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--color-accent);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i {
            color: var(--color-accent);
        }
        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tag {
            display: inline-block;
            padding: 6px 13px;
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--color-tag-bg);
            color: var(--color-tag-text);
            transition: all var(--transition-fast);
            cursor: pointer;
            border: 1px solid transparent;
            text-decoration: none;
        }
        .sidebar-tag:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }
        .sidebar-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .sidebar-list-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            text-decoration: none;
            color: inherit;
        }
        .sidebar-list-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .sidebar-list-item:hover .sidebar-list-title {
            color: var(--color-accent);
        }
        .sidebar-list-thumb {
            width: 72px;
            height: 48px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--color-bg-alt);
        }
        .sidebar-list-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .sidebar-list-info {
            flex: 1;
            min-width: 0;
        }
        .sidebar-list-title {
            font-size: 0.875rem;
            font-weight: 600;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }
        .sidebar-list-date {
            font-size: 0.75rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

        /* ============ NEWSLETTER CTA ============ */
        .newsletter-cta {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            margin-top: 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .newsletter-cta::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            z-index: 0;
        }
        .newsletter-cta::after {
            content: '';
            position: absolute;
            bottom: -30px;
            left: -30px;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            z-index: 0;
        }
        .newsletter-cta .container {
            position: relative;
            z-index: 1;
            max-width: 600px;
        }
        .newsletter-cta h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .newsletter-cta p {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 22px;
            font-size: 0.95rem;
        }
        .newsletter-form {
            display: flex;
            gap: 10px;
            max-width: 440px;
            margin: 0 auto;
        }
        .newsletter-form input {
            flex: 1;
            padding: 12px 18px;
            border-radius: var(--radius-full);
            border: 2px solid transparent;
            font-size: 0.95rem;
            background: #fff;
            color: var(--color-text);
            transition: all var(--transition-fast);
        }
        .newsletter-form input:focus {
            outline: none;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 4px rgba(212, 148, 43, 0.15);
        }
        .newsletter-form button {
            padding: 12px 24px;
            border-radius: var(--radius-full);
            background: var(--color-accent);
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .newsletter-form button:hover {
            background: var(--color-accent-light);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--color-primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 0;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-col p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
            text-decoration: none;
        }
        .footer-col ul li a:hover {
            color: var(--color-accent-light);
        }
        .footer-bottom {
            padding: 18px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .category-layout {
                flex-direction: column;
            }
            .category-sidebar {
                width: 100%;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 16px;
            }
            .category-sidebar .sidebar-card {
                flex: 1;
                min-width: 240px;
            }
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .category-banner h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
            }
            .header-actions {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .site-header .nav-links {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--color-surface);
                flex-direction: column;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition-base);
                z-index: 999;
            }
            .site-header .nav-links.open {
                transform: translateY(0);
                opacity: 1;
            }
            .site-header .nav-links a {
                width: 100%;
                padding: 10px 16px;
                border-radius: var(--radius-md);
                font-size: 0.95rem;
            }
            .article-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .category-banner {
                padding: 40px 0;
            }
            .category-banner h1 {
                font-size: 1.6rem;
            }
            .category-banner .banner-desc {
                font-size: 0.95rem;
            }
            .filter-bar {
                flex-direction: column;
                align-items: stretch;
                gap: 10px;
            }
            .filter-sort {
                justify-content: flex-end;
            }
            .newsletter-cta {
                padding: 32px 20px;
            }
            .newsletter-form {
                flex-direction: column;
                gap: 10px;
            }
            .newsletter-form button {
                width: 100%;
            }
            .category-sidebar {
                flex-direction: column;
                gap: 16px;
            }
            .category-sidebar .sidebar-card {
                min-width: auto;
            }
            .sidebar-list-thumb {
                width: 56px;
                height: 40px;
            }
            .pagination a,
            .pagination span {
                min-width: 32px;
                height: 32px;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .logo-text {
                font-size: 1rem;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1rem;
            }
            .category-banner {
                padding: 32px 0;
            }
            .category-banner h1 {
                font-size: 1.35rem;
            }
            .category-banner .banner-desc {
                font-size: 0.85rem;
            }
            .banner-stats {
                gap: 14px;
            }
            .banner-stat-item {
                font-size: 0.8rem;
            }
            .banner-stat-item .stat-num {
                font-size: 1.15rem;
            }
            .filter-tabs {
                gap: 2px;
            }
            .filter-tab {
                padding: 6px 11px;
                font-size: 0.78rem;
            }
            .article-card-body h3 {
                font-size: 0.95rem;
            }
            .article-card-body .card-excerpt {
                font-size: 0.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .newsletter-cta h3 {
                font-size: 1.25rem;
            }
            .pagination {
                gap: 3px;
            }
            .pagination a,
            .pagination span {
                min-width: 28px;
                height: 28px;
                font-size: 0.75rem;
            }
        }