/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #d4262b;
            --primary-dark: #b01e22;
            --primary-light: #fbe5e5;
            --secondary: #1a1f36;
            --secondary-light: #2a3050;
            --accent: #f5a623;
            --bg: #f8f9fc;
            --bg-alt: #ffffff;
            --bg-dark: #0f111a;
            --text: #1e2235;
            --text-weak: #6b7280;
            --text-inverse: #ffffff;
            --border: #e5e7eb;
            --border-light: #f0f1f5;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 8px 30px rgba(0,0,0,0.06);
            --shadow-hover: 0 16px 48px rgba(0,0,0,0.10);
            --shadow-btn: 0 4px 14px rgba(212,38,43,0.25);
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
            --spacer: 80px;
            --spacer-sm: 48px;
        }

        /* ===== 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);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text);
            background: var(--bg);
        }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: 1rem; outline: none; border: none; }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--secondary); }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.0rem; margin-bottom: 0.5em; }
        h3 { font-size: 1.35rem; }
        p { margin-bottom: 1em; color: var(--text-weak); }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section { padding: var(--spacer) 0; }
        .section-title {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        .section-title h2 {
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 48px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-title p {
            max-width: 560px;
            margin: 12px auto 0;
            font-size: 1.05rem;
        }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary);
            letter-spacing: 0.3px;
        }
        .badge-outline {
            background: transparent;
            border: 1.5px solid var(--border);
            color: var(--text-weak);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212,38,43,0.35);
            color: #fff;
        }
        .btn-primary:active { transform: translateY(0); }
        .btn-secondary {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-secondary:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-light {
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(4px);
            color: #fff;
            border-color: rgba(255,255,255,0.3);
        }
        .btn-light:hover {
            background: rgba(255,255,255,0.25);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn:focus-visible { outline: 3px solid var(--primary); outline-offset: 3px; }
        .text-center { text-align: center; }
        .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
        .grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            z-index: 1000;
            transition: background var(--transition);
        }
        .site-header.scrolled { background: rgba(255,255,255,0.98); box-shadow: 0 2px 20px rgba(0,0,0,0.06); }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i { color: var(--primary); font-size: 1.6rem; }
        .logo span { color: var(--primary); }
        .nav-links { display: flex; align-items: center; gap: 8px; }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.92rem;
            color: var(--text-weak);
            transition: all var(--transition);
            position: relative;
        }
        .nav-links a:hover { color: var(--primary); background: var(--primary-light); }
        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav-cta {
            margin-left: 12px;
        }
        .nav-cta .btn {
            padding: 9px 24px;
            font-size: 0.88rem;
        }
        .mobile-toggle {
            display: none;
            font-size: 1.6rem;
            color: var(--secondary);
            padding: 4px 8px;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .mobile-toggle:hover { background: var(--primary-light); }
        .mobile-toggle:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }

        /* ===== Hero ===== */
        .hero {
            min-height: 90vh;
            display: flex;
            align-items: center;
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            margin-top: var(--nav-height);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,17,26,0.78) 0%, rgba(15,17,26,0.35) 70%, rgba(15,17,26,0.15) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .hero-content { max-width: 680px; }
        .hero-content .badge {
            background: rgba(212,38,43,0.2);
            color: #ffb3b5;
            border: 1px solid rgba(212,38,43,0.3);
            margin-bottom: 20px;
        }
        .hero-content h1 {
            color: #fff;
            font-size: 3.2rem;
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.15;
            margin-bottom: 20px;
        }
        .hero-content h1 span { color: var(--accent); }
        .hero-content p {
            color: rgba(255,255,255,0.8);
            font-size: 1.15rem;
            max-width: 520px;
            margin-bottom: 32px;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-stats {
            display: flex;
            gap: 48px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.12);
        }
        .hero-stats .stat-num { font-size: 2.0rem; font-weight: 800; color: #fff; }
        .hero-stats .stat-label { font-size: 0.85rem; color: rgba(255,255,255,0.6); }

        /* ===== Intro ===== */
        .intro-block {
            background: var(--bg-alt);
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .intro-image img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .intro-image:hover img { transform: scale(1.03); }
        .intro-text h2 { font-size: 2.0rem; }
        .intro-text p { font-size: 1.05rem; }
        .intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 20px; }
        .intro-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text);
        }
        .intro-features li i { color: var(--primary); font-size: 1.1rem; }

        /* ===== Categories ===== */
        .categories-block { background: var(--bg); }
        .cat-card {
            background: var(--bg-alt);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .cat-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .cat-card-body { padding: 24px; }
        .cat-card-body h3 { margin-bottom: 8px; }
        .cat-card-body p { font-size: 0.92rem; margin-bottom: 16px; }
        .cat-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 16px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.78rem;
            font-weight: 600;
        }

        /* ===== Latest News (CMS) ===== */
        .news-block { background: var(--bg-alt); }
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .news-card {
            display: flex;
            gap: 20px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            padding: 20px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .news-card img {
            width: 140px;
            min-height: 100px;
            border-radius: var(--radius-xs);
            object-fit: cover;
            flex-shrink: 0;
        }
        .news-card-content { flex: 1; }
        .news-card-content .meta {
            display: flex;
            gap: 12px;
            font-size: 0.80rem;
            color: var(--text-weak);
            margin-bottom: 6px;
        }
        .news-card-content .meta .cat { color: var(--primary); font-weight: 600; }
        .news-card-content h3 { font-size: 1.05rem; margin-bottom: 6px; }
        .news-card-content h3 a:hover { color: var(--primary); }
        .news-card-content p { font-size: 0.88rem; margin-bottom: 0; }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
            color: var(--text-weak);
        }
        .news-empty i { font-size: 2.4rem; margin-bottom: 12px; color: var(--border); }

        /* ===== Stats Counter ===== */
        .stats-block {
            background: var(--bg-dark);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .stats-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .stats-block .container { position: relative; z-index: 1; }
        .stats-block .section-title h2 { color: #fff; }
        .stats-block .section-title h2::after { background: var(--accent); }
        .stats-block .section-title p { color: rgba(255,255,255,0.6); }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4,1fr);
            gap: 32px;
            text-align: center;
        }
        .stat-item {
            padding: 24px 12px;
            background: rgba(255,255,255,0.04);
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255,255,255,0.06);
            transition: background var(--transition);
        }
        .stat-item:hover { background: rgba(255,255,255,0.08); }
        .stat-item .num { font-size: 2.6rem; font-weight: 800; color: var(--accent); line-height: 1.2; }
        .stat-item .label { font-size: 0.92rem; color: rgba(255,255,255,0.6); margin-top: 6px; }

        /* ===== Flow / Steps ===== */
        .flow-block { background: var(--bg); }
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(3,1fr);
            gap: 32px;
            counter-reset: step;
        }
        .flow-step {
            background: var(--bg-alt);
            border-radius: var(--radius);
            padding: 32px 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            position: relative;
        }
        .flow-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .flow-step::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -12px;
            right: 20px;
            font-size: 3.6rem;
            font-weight: 900;
            color: var(--primary-light);
            line-height: 1;
            opacity: 0.5;
        }
        .flow-step .icon { font-size: 2.0rem; color: var(--primary); margin-bottom: 16px; }
        .flow-step h3 { margin-bottom: 8px; }
        .flow-step p { font-size: 0.92rem; margin-bottom: 0; }

        /* ===== Features ===== */
        .features-block { background: var(--bg-alt); }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3,1fr);
            gap: 28px;
        }
        .feature-item {
            padding: 28px 24px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            background: var(--bg);
            transition: all var(--transition);
        }
        .feature-item:hover {
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }
        .feature-item i { font-size: 1.8rem; color: var(--primary); margin-bottom: 14px; }
        .feature-item h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .feature-item p { font-size: 0.90rem; margin-bottom: 0; }

        /* ===== FAQ ===== */
        .faq-block { background: var(--bg); }
        .faq-list { max-width: 780px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-alt);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow); }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1.0rem;
            color: var(--secondary);
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover { background: var(--primary-light); }
        .faq-question:focus-visible { outline: 3px solid var(--primary); outline-offset: -3px; }
        .faq-question i { color: var(--primary); transition: transform var(--transition); }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-weak);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-block .container { position: relative; z-index: 1; text-align: center; }
        .cta-block h2 { color: #fff; font-size: 2.2rem; }
        .cta-block p { color: rgba(255,255,255,0.7); max-width: 520px; margin: 12px auto 28px; }
        .cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--secondary);
            color: rgba(255,255,255,0.7);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .logo { color: #fff; margin-bottom: 12px; }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand p { font-size: 0.90rem; color: rgba(255,255,255,0.5); max-width: 280px; }
        .footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 16px; }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.55);
            transition: color var(--transition);
        }
        .footer-col a:hover { color: var(--accent); }
        .footer-col .social-links { display: flex; gap: 12px; margin-top: 8px; }
        .footer-col .social-links a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.5);
            font-size: 1.1rem;
            transition: all var(--transition);
        }
        .footer-col .social-links a:hover { background: var(--primary); color: #fff; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.35);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: 1fr 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            :root { --spacer: 48px; --spacer-sm: 32px; }
            h1 { font-size: 2.0rem; }
            h2 { font-size: 1.6rem; }
            .hero { min-height: 70vh; }
            .hero-content h1 { font-size: 2.2rem; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stats .stat-num { font-size: 1.6rem; }
            .intro-grid { grid-template-columns: 1fr; }
            .intro-features { grid-template-columns: 1fr; }
            .grid-2, .grid-3, .news-grid { grid-template-columns: 1fr; }
            .flow-grid { grid-template-columns: 1fr; }
            .features-grid { grid-template-columns: 1fr 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .news-card { flex-direction: column; }
            .news-card img { width: 100%; height: 180px; }

            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: 0 20px 40px rgba(0,0,0,0.06);
            }
            .nav-links.open { display: flex; }
            .nav-links a { padding: 12px 16px; width: 100%; }
            .nav-cta { margin-left: 0; margin-top: 8px; width: 100%; }
            .nav-cta .btn { width: 100%; justify-content: center; }
            .mobile-toggle { display: block; }
        }
        @media (max-width: 520px) {
            .hero-content h1 { font-size: 1.7rem; }
            .hero-actions { flex-direction: column; }
            .hero-actions .btn { width: 100%; justify-content: center; }
            .features-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-item .num { font-size: 1.8rem; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 480px) {
            .container { padding: 0 16px; }
            .section-title h2 { font-size: 1.4rem; }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2a4a7f;
            --accent: #f4a261;
            --accent-light: #f8c78a;
            --bg-body: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #0d1b2a;
            --bg-card: #ffffff;
            --text-primary: #1a1a2e;
            --text-body: #2d3436;
            --text-muted: #636e72;
            --text-light: #b2bec3;
            --text-white: #f8f9fa;
            --border-color: #e9ecef;
            --border-light: #f0f0f0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
            --shadow-hover: 0 12px 36px rgba(230,57,70,0.18);
            --transition: all 0.30s cubic-bezier(0.25,0.46,0.45,0.94);
            --font-body: '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; }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 {
            color: var(--text-primary);
            line-height: 1.3;
            font-weight: 700;
            letter-spacing: -0.02em;
        }
        h1 { font-size: 2.4rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.2rem; }
        p { margin-bottom: 1rem; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            border: none;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(230,57,70,0.35);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 8px 28px rgba(230,57,70,0.45);
            transform: translateY(-2px);
        }
        .btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(230,57,70,0.3); }
        .btn-secondary {
            background: var(--secondary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(29,53,87,0.3);
        }
        .btn-secondary:hover {
            background: var(--secondary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(29,53,87,0.4);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm { padding: 6px 18px; font-size: 0.85rem; border-radius: var(--radius-sm); }
        .btn-lg { padding: 14px 38px; font-size: 1.1rem; border-radius: var(--radius-lg); }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 2px 20px rgba(0,0,0,0.04);
            height: var(--header-height);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.03em;
            flex-shrink: 0;
        }
        .logo i { color: var(--primary); font-size: 1.6rem; }
        .logo span { color: var(--primary); }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            color: var(--text-body);
            font-weight: 500;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            font-size: 0.95rem;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(230,57,70,0.06);
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
            background: rgba(230,57,70,0.10);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-cta { margin-left: 12px; }
        .nav-cta .btn { padding: 8px 22px; font-size: 0.9rem; border-radius: var(--radius-md); }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            background: none;
            border: none;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 3px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px,6px); }
        .nav-toggle.active span:nth-child(2) { opacity: 0; }
        .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-6px); }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 60px 0 40px;
            background: var(--bg-dark);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .article-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 1;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
            color: var(--text-white);
            width: 100%;
        }
        .article-hero .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 20px;
        }
        .article-hero .breadcrumb a {
            color: rgba(255,255,255,0.8);
        }
        .article-hero .breadcrumb a:hover { color: #fff; }
        .article-hero .breadcrumb .sep { color: rgba(255,255,255,0.4); }
        .article-hero h1 {
            color: #fff;
            font-size: 2.6rem;
            max-width: 900px;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            font-size: 0.92rem;
            color: rgba(255,255,255,0.75);
        }
        .article-meta .tag {
            display: inline-block;
            padding: 3px 14px;
            background: var(--primary);
            color: #fff;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .article-meta i { margin-right: 5px; opacity: 0.8; }
        .article-meta .meta-item { display: flex; align-items: center; gap: 4px; }

        /* ===== Article Body ===== */
        .article-section {
            padding: 50px 0 70px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-main {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px 44px;
            border: 1px solid var(--border-color);
        }
        .article-main .article-thumb {
            width: 100%;
            border-radius: var(--radius-md);
            margin-bottom: 32px;
            max-height: 480px;
            object-fit: cover;
            box-shadow: var(--shadow-sm);
        }
        .article-content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-body);
        }
        .article-content h2, .article-content h3, .article-content h4 {
            margin-top: 2rem;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }
        .article-content p {
            margin-bottom: 1.2rem;
        }
        .article-content ul, .article-content ol {
            margin-bottom: 1.2rem;
            padding-left: 1.6rem;
        }
        .article-content ul { list-style: disc; }
        .article-content ol { list-style: decimal; }
        .article-content li { margin-bottom: 0.4rem; }
        .article-content a { color: var(--primary); text-decoration: underline; }
        .article-content a:hover { color: var(--primary-dark); }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(230,57,70,0.05);
            padding: 16px 24px;
            margin: 1.6rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-muted);
        }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 1.6rem 0;
            box-shadow: var(--shadow-sm);
        }
        .article-content .wp-caption, .article-content figcaption {
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: -0.8rem;
            margin-bottom: 1.6rem;
        }

        .article-nav {
            display: flex;
            justify-content: space-between;
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border-color);
        }
        .article-nav a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            background: var(--bg-body);
            transition: var(--transition);
        }
        .article-nav a:hover {
            background: rgba(230,57,70,0.08);
            color: var(--primary);
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary);
            display: inline-block;
        }
        .sidebar-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .sidebar-list a {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            color: var(--text-body);
            padding: 8px 0;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .sidebar-list a:last-child { border-bottom: none; }
        .sidebar-list a:hover { color: var(--primary); }
        .sidebar-list img {
            width: 72px;
            height: 52px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .sidebar-list .info {
            flex: 1;
            min-width: 0;
        }
        .sidebar-list .info h4 {
            font-size: 0.88rem;
            font-weight: 600;
            margin-bottom: 4px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .sidebar-list .info span {
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tags a {
            display: inline-block;
            padding: 4px 14px;
            background: var(--bg-body);
            color: var(--text-muted);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .sidebar-tags a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found-box i { font-size: 4rem; color: var(--text-light); margin-bottom: 20px; }
        .not-found-box h2 { font-size: 1.8rem; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-muted); max-width: 480px; margin: 0 auto 24px; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.75);
            padding: 60px 0 30px;
            border-top: 4px solid var(--primary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 1.4rem;
            margin-bottom: 16px;
        }
        .footer-brand .logo i { color: var(--primary); }
        .footer-brand .logo span { color: var(--primary); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.6); max-width: 360px; }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.6);
            padding: 4px 0;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--primary); padding-left: 4px; }
        .social-links {
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }
        .social-links a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.7);
            font-size: 1.1rem;
            transition: var(--transition);
            padding: 0;
        }
        .social-links a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
            padding: 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.4);
        }

        /* ===== Article Error State ===== */
        .article-error {
            min-height: 50vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 60px 24px;
        }
        .article-error .error-box {
            text-align: center;
            max-width: 520px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }
        .article-error .error-box i {
            font-size: 4rem;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .article-error .error-box h2 {
            font-size: 1.8rem;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .article-error .error-box p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .article-hero h1 { font-size: 2.2rem; }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 20px 24px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
                gap: 4px;
            }
            .nav-links.open { display: flex; }
            .nav-links a { padding: 12px 16px; width: 100%; border-radius: var(--radius-sm); }
            .nav-links a.active::after { display: none; }
            .nav-cta { margin-left: 0; margin-top: 8px; width: 100%; }
            .nav-cta .btn { width: 100%; justify-content: center; }
            .nav-toggle { display: flex; }
            .article-hero { padding: 40px 0 32px; min-height: 240px; }
            .article-hero h1 { font-size: 1.8rem; }
            .article-main { padding: 24px 20px; }
            .article-meta { gap: 12px; font-size: 0.82rem; }
            .article-sidebar { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .article-nav { flex-direction: column; gap: 12px; }
            .article-content { font-size: 1rem; }
        }
        @media (max-width: 520px) {
            .header-inner { padding: 0 16px; }
            .container { padding: 0 16px; }
            .logo { font-size: 1.2rem; }
            .logo i { font-size: 1.3rem; }
            .article-hero h1 { font-size: 1.5rem; }
            .article-hero { padding: 28px 0 24px; min-height: 200px; }
            .article-main { padding: 18px 14px; }
            .btn { padding: 8px 20px; font-size: 0.85rem; }
            .btn-lg { padding: 12px 28px; font-size: 1rem; }
            .sidebar-card { padding: 18px 16px; }
            .not-found-box { padding: 36px 14px; }
            .not-found-box i { font-size: 3rem; }
            .article-error .error-box { padding: 32px 20px; }
        }
        @media (max-width: 480px) {
            .article-hero h1 { font-size: 1.3rem; }
            .article-meta { flex-direction: column; gap: 8px; align-items: flex-start; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
    --primary: #1a56db;
    --primary-dark: #0f3a8e;
    --primary-light: #3b82f6;
    --primary-bg: #eff6ff;
    --accent: #f59e0b;
    --accent-dark: #d97706;
    --accent-light: #fbbf24;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --bg-dark: #0f172a;
    --text: #1e293b;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --text-white: #f1f5f9;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --nav-height: 72px;
    --max-width: 1200px;
    --gap: 24px;
    --gap-sm: 16px;
    --gap-lg: 40px;
}
/* ===== 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); color: var(--text); background: var(--bg); line-height: 1.7; font-size: 16px; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
a:focus-visible { outline: 2px solid var(--primary-light); outline-offset: 2px; border-radius: 4px; }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
/* ===== Container ===== */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--gap); }
/* ===== Header / Nav ===== */
.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,0.96); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); height: var(--nav-height); display: flex; align-items: center; }
.site-header .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.logo { display: flex; align-items: center; gap: 8px; font-size: 24px; font-weight: 800; color: var(--text); white-space: nowrap; }
.logo i { color: var(--primary); font-size: 28px; }
.logo span { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a { padding: 8px 18px; border-radius: var(--radius-sm); font-weight: 500; color: var(--text-light); transition: all var(--transition); position: relative; font-size: 15px; }
.nav-links a:hover { color: var(--primary); background: var(--primary-bg); }
.nav-links a.active { color: var(--primary); background: var(--primary-bg); font-weight: 600; }
.nav-links a.active::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; background: var(--primary); border-radius: 2px; }
.nav-cta { margin-left: 12px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 24px; border-radius: var(--radius-sm); font-weight: 600; font-size: 15px; border: none; cursor: pointer; transition: all var(--transition); line-height: 1.4; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 2px 8px rgba(26,86,219,0.3); }
.btn-primary:hover { background: var(--primary-dark); color: #fff; box-shadow: 0 4px 16px rgba(26,86,219,0.4); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 1px 4px rgba(26,86,219,0.3); }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 2px 8px rgba(245,158,11,0.3); }
.btn-accent:hover { background: var(--accent-dark); color: #fff; box-shadow: 0 4px 16px rgba(245,158,11,0.4); transform: translateY(-1px); }
.btn-lg { padding: 14px 36px; font-size: 17px; border-radius: var(--radius); }
.nav-toggle { display: none; background: none; border: none; font-size: 28px; color: var(--text); cursor: pointer; padding: 4px; }
/* ===== Hero / Banner ===== */
.page-hero { position: relative; min-height: 280px; display: flex; align-items: center; justify-content: center; text-align: center; padding: 80px 0 60px; background: var(--bg-dark); overflow: hidden; }
.page-hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat; opacity: 0.3; transform: scale(1.05); }
.page-hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,23,42,0.85) 0%, rgba(26,86,219,0.5) 100%); }
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: 44px; font-weight: 800; color: #fff; margin-bottom: 16px; letter-spacing: -0.5px; text-shadow: 0 2px 12px rgba(0,0,0,0.2); }
.page-hero p { font-size: 18px; color: var(--text-white); max-width: 680px; margin: 0 auto 24px; opacity: 0.9; }
.page-hero .hero-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 8px; }
.tag { display: inline-block; padding: 6px 16px; border-radius: 20px; font-size: 13px; font-weight: 500; background: rgba(255,255,255,0.15); color: #fff; backdrop-filter: blur(4px); border: 1px solid rgba(255,255,255,0.2); transition: all var(--transition); }
.tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.tag.tag-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.tag.tag-accent { background: var(--accent); color: #fff; border-color: var(--accent); }
/* ===== Section ===== */
.section { padding: 70px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--bg-dark); color: var(--text-white); }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-dark .text-muted { color: var(--text-muted); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 { font-size: 32px; font-weight: 700; margin-bottom: 12px; }
.section-header .subtitle { font-size: 17px; color: var(--text-light); max-width: 600px; margin: 0 auto; }
.section-header .divider { width: 48px; height: 4px; background: var(--primary); border-radius: 2px; margin: 16px auto 0; }
/* ===== Card Grid ===== */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.card { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--border); transition: all var(--transition); display: flex; flex-direction: column; }
.card:hover { box-shadow: var(--shadow); transform: translateY(-4px); border-color: var(--primary-light); }
.card-img { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--bg-alt); }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.card:hover .card-img img { transform: scale(1.05); }
.card-img .card-tag { position: absolute; top: 12px; left: 12px; background: var(--primary); color: #fff; padding: 4px 12px; border-radius: 4px; font-size: 12px; font-weight: 600; }
.card-img .card-date { position: absolute; bottom: 12px; right: 12px; background: rgba(0,0,0,0.65); color: #fff; padding: 4px 12px; border-radius: 4px; font-size: 12px; backdrop-filter: blur(4px); }
.card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.card-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; line-height: 1.35; }
.card-body h3 a { color: var(--text); }
.card-body h3 a:hover { color: var(--primary); }
.card-body p { font-size: 14px; color: var(--text-light); line-height: 1.6; margin-bottom: 12px; flex: 1; }
.card-body .card-meta { display: flex; align-items: center; gap: 16px; font-size: 13px; color: var(--text-muted); padding-top: 12px; border-top: 1px solid var(--border-light); }
.card-body .card-meta i { margin-right: 4px; }
.card-featured { grid-column: span 2; display: grid; grid-template-columns: 1fr 1fr; }
.card-featured .card-img { aspect-ratio: 16 / 9; }
.card-featured .card-body { padding: 28px; }
.card-featured .card-body h3 { font-size: 22px; }
.card-featured .card-body p { font-size: 15px; }
/* ===== Filter Tabs ===== */
.filter-tabs { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 36px; }
.filter-tab { padding: 8px 20px; border-radius: 20px; font-size: 14px; font-weight: 500; background: #fff; border: 1px solid var(--border); color: var(--text-light); cursor: pointer; transition: all var(--transition); }
.filter-tab:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-bg); }
.filter-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); box-shadow: 0 2px 8px rgba(26,86,219,0.25); }
/* ===== Featured Big Card ===== */
.featured-card { display: grid; grid-template-columns: 1fr 1fr; background: #fff; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border); }
.featured-card .fc-img { aspect-ratio: 16 / 10; overflow: hidden; background: var(--bg-alt); }
.featured-card .fc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.featured-card:hover .fc-img img { transform: scale(1.03); }
.featured-card .fc-body { padding: 32px; display: flex; flex-direction: column; justify-content: center; }
.featured-card .fc-body .fc-tag { display: inline-block; padding: 4px 14px; border-radius: 4px; font-size: 12px; font-weight: 600; background: var(--accent); color: #fff; margin-bottom: 12px; width: fit-content; }
.featured-card .fc-body h3 { font-size: 24px; font-weight: 700; margin-bottom: 12px; }
.featured-card .fc-body p { font-size: 15px; color: var(--text-light); line-height: 1.7; margin-bottom: 16px; }
.featured-card .fc-body .fc-meta { font-size: 13px; color: var(--text-muted); display: flex; gap: 20px; }
.featured-card .fc-body .fc-meta i { margin-right: 4px; }
/* ===== Stats / Data ===== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap); }
.stat-card { text-align: center; background: #fff; border-radius: var(--radius); padding: 32px 20px; box-shadow: var(--shadow-sm); border: 1px solid var(--border); transition: all var(--transition); }
.stat-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.stat-number { font-size: 42px; font-weight: 800; color: var(--primary); line-height: 1.2; }
.stat-label { font-size: 15px; color: var(--text-light); margin-top: 6px; font-weight: 500; }
.stat-card .stat-icon { font-size: 28px; color: var(--primary-light); margin-bottom: 8px; }
/* ===== Timeline ===== */
.timeline { position: relative; padding: 0; }
.timeline::before { content: ''; position: absolute; left: 24px; top: 0; bottom: 0; width: 3px; background: var(--border); border-radius: 2px; }
.timeline-item { position: relative; padding-left: 60px; padding-bottom: 32px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before { content: ''; position: absolute; left: 16px; top: 6px; width: 16px; height: 16px; border-radius: 50%; background: var(--primary); border: 3px solid #fff; box-shadow: 0 0 0 3px var(--primary-light); }
.timeline-item .tl-date { font-size: 13px; color: var(--primary); font-weight: 600; margin-bottom: 4px; }
.timeline-item .tl-title { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.timeline-item .tl-desc { font-size: 14px; color: var(--text-light); }
/* ===== FAQ ===== */
.faq-grid { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: #fff; border-radius: var(--radius); border: 1px solid var(--border); overflow: hidden; transition: all var(--transition); }
.faq-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow-sm); }
.faq-q { padding: 18px 24px; font-weight: 600; font-size: 16px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 12px; user-select: none; transition: background var(--transition); }
.faq-q:hover { background: var(--primary-bg); }
.faq-q i { transition: transform var(--transition); color: var(--text-muted); font-size: 14px; }
.faq-item.open .faq-q i { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding 0.3s ease; padding: 0 24px; font-size: 15px; color: var(--text-light); line-height: 1.7; }
.faq-item.open .faq-a { max-height: 300px; padding: 0 24px 20px; }
/* ===== CTA ===== */
.cta-section { background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%); padding: 70px 0; text-align: center; position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat; opacity: 0.08; }
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { font-size: 34px; font-weight: 800; color: #fff; margin-bottom: 12px; }
.cta-section p { font-size: 17px; color: rgba(255,255,255,0.85); max-width: 600px; margin: 0 auto 28px; }
.cta-section .btn { background: var(--accent); color: #fff; box-shadow: 0 4px 20px rgba(245,158,11,0.35); }
.cta-section .btn:hover { background: var(--accent-dark); box-shadow: 0 6px 28px rgba(245,158,11,0.45); transform: translateY(-2px); }
/* ===== Footer ===== */
.site-footer { background: var(--bg-dark); color: var(--text-white); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: var(--gap-lg); margin-bottom: 40px; }
.footer-brand .logo { color: #fff; margin-bottom: 12px; }
.footer-brand .logo i { color: var(--primary-light); }
.footer-brand .logo span { color: var(--primary-light); }
.footer-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.7; max-width: 320px; }
.footer-col h4 { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-col a { display: block; font-size: 14px; color: var(--text-muted); padding: 4px 0; transition: color var(--transition); }
.footer-col a:hover { color: var(--primary-light); }
.social-links { display: flex; gap: 12px; }
.social-links a { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.06); color: var(--text-muted); font-size: 18px; transition: all var(--transition); }
.social-links a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 20px 0; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--text-muted); }
/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .card-grid { grid-template-columns: repeat(2, 1fr); }
    .card-featured { grid-column: span 2; grid-template-columns: 1fr 1fr; }
    .featured-card { grid-template-columns: 1fr 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .nav-links { display: none; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); padding: 12px 24px 20px; box-shadow: var(--shadow-lg); gap: 6px; }
    .nav-links.open { display: flex; }
    .nav-links a { padding: 10px 16px; width: 100%; }
    .nav-links a.active::after { display: none; }
    .nav-links a.active { background: var(--primary-bg); }
    .nav-cta { margin-left: 0; margin-top: 4px; width: 100%; }
    .nav-cta .btn { width: 100%; justify-content: center; }
    .nav-toggle { display: block; }
    .page-hero { min-height: 200px; padding: 60px 0 40px; }
    .page-hero h1 { font-size: 30px; }
    .page-hero p { font-size: 16px; }
    .section { padding: 50px 0; }
    .section-header h2 { font-size: 26px; }
    .card-grid { grid-template-columns: 1fr; gap: var(--gap-sm); }
    .card-featured { grid-column: span 1; grid-template-columns: 1fr; }
    .card-featured .card-img { aspect-ratio: 16 / 10; }
    .card-featured .card-body { padding: 18px; }
    .card-featured .card-body h3 { font-size: 18px; }
    .featured-card { grid-template-columns: 1fr; }
    .featured-card .fc-body { padding: 20px; }
    .featured-card .fc-body h3 { font-size: 20px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--gap-sm); }
    .stat-number { font-size: 32px; }
    .stat-card { padding: 20px 12px; }
    .timeline::before { left: 16px; }
    .timeline-item { padding-left: 44px; }
    .timeline-item::before { left: 8px; }
    .footer-grid { grid-template-columns: 1fr; gap: var(--gap); }
    .footer-bottom { flex-direction: column; text-align: center; }
    .filter-tabs { gap: 6px; }
    .filter-tab { padding: 6px 14px; font-size: 13px; }
}
@media (max-width: 520px) {
    .container { padding: 0 14px; }
    .page-hero h1 { font-size: 24px; }
    .page-hero p { font-size: 14px; }
    .section-header h2 { font-size: 22px; }
    .card-body h3 { font-size: 16px; }
    .stat-number { font-size: 26px; }
    .stat-label { font-size: 13px; }
    .featured-card .fc-body h3 { font-size: 17px; }
    .cta-section h2 { font-size: 24px; }
    .btn-lg { padding: 12px 24px; font-size: 15px; }
    .logo { font-size: 20px; }
    .logo i { font-size: 22px; }
}