/* roulang page: index */
:root {
            --brand-primary: #f97316;
            --brand-primary-dark: #ea580c;
            --brand-primary-light: #fed7aa;
            --bg-light: #fafaf9;
            --bg-white: #ffffff;
            --text-dark: #1c1917;
            --text-muted: #78716c;
            --border-light: #e7e5e4;
            --radius-card: 1rem;
            --shadow-card: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
            --transition-base: all 0.3s ease;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'PingFang SC', 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.6;
        }
        a { text-decoration: none; color: inherit; transition: var(--transition-base); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; outline: none; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 1.25rem; }
        .container-wide { max-width: 1400px; margin: 0 auto; padding: 0 1.25rem; }
        .section-padding { padding: 5rem 0; }
        .section-title {
            font-size: 2.25rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 0.75rem;
            color: var(--text-dark);
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            font-size: 1.125rem;
            text-align: center;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 3rem auto;
        }
        .card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            background: var(--brand-primary);
            color: #fff;
            border-radius: 9999px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 4px 14px rgba(249,115,22,0.35);
        }
        .btn-primary:hover {
            background: var(--brand-primary-dark);
            box-shadow: 0 6px 24px rgba(249,115,22,0.45);
            transform: translateY(-2px);
        }
        .btn-primary:active { transform: scale(0.97); }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.75rem;
            background: transparent;
            color: var(--brand-primary);
            border: 2px solid var(--brand-primary);
            border-radius: 9999px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition-base);
        }
        .btn-outline:hover {
            background: var(--brand-primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .badge {
            display: inline-block;
            padding: 0.25rem 0.9rem;
            background: var(--brand-primary-light);
            color: var(--brand-primary-dark);
            border-radius: 9999px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .badge-neutral {
            background: #f5f5f4;
            color: #57534e;
        }
        .tag {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            background: #f5f5f4;
            color: #78716c;
            border-radius: 6px;
            font-size: 0.8rem;
            font-weight: 500;
            transition: var(--transition-base);
        }
        .tag:hover { background: var(--brand-primary-light); color: var(--brand-primary-dark); }
        .divider {
            width: 60px;
            height: 4px;
            background: var(--brand-primary);
            border-radius: 4px;
            margin: 0.75rem auto 1.5rem auto;
        }
        /* header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(231,229,228,0.6);
            transition: var(--transition-base);
        }
        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .site-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.03em;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .site-logo i { color: var(--brand-primary); font-size: 1.5rem; }
        .site-logo span { background: linear-gradient(135deg, var(--brand-primary), #d97706); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-desktop { display: flex; align-items: center; gap: 2rem; }
        .nav-desktop a {
            font-size: 0.95rem;
            font-weight: 500;
            color: #57534e;
            padding: 0.3rem 0;
            position: relative;
            transition: var(--transition-base);
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--brand-primary);
            border-radius: 2px;
            transition: var(--transition-base);
        }
        .nav-desktop a:hover { color: var(--text-dark); }
        .nav-desktop a:hover::after { width: 100%; }
        .nav-desktop a.active { color: var(--brand-primary-dark); font-weight: 600; }
        .nav-desktop a.active::after { width: 100%; }
        .nav-desktop .nav-cta {
            padding: 0.5rem 1.4rem;
            background: var(--brand-primary);
            color: #fff !important;
            border-radius: 9999px;
            font-weight: 600;
        }
        .nav-desktop .nav-cta::after { display: none; }
        .nav-desktop .nav-cta:hover { background: var(--brand-primary-dark); transform: translateY(-1px); }
        /* mobile bottom tab */
        .mobile-tab-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 200;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid var(--border-light);
            display: none;
            justify-content: space-around;
            align-items: center;
            height: 64px;
            padding: 0 0.5rem;
            box-shadow: 0 -4px 20px rgba(0,0,0,0.05);
        }
        .mobile-tab-bar .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            font-size: 0.7rem;
            color: #a8a29e;
            padding: 0.3rem 0.6rem;
            border-radius: 8px;
            transition: var(--transition-base);
            min-width: 60px;
        }
        .mobile-tab-bar .tab-item i { font-size: 1.3rem; transition: var(--transition-base); }
        .mobile-tab-bar .tab-item span { font-weight: 500; }
        .mobile-tab-bar .tab-item:hover { color: var(--brand-primary); }
        .mobile-tab-bar .tab-item.active { color: var(--brand-primary); }
        .mobile-tab-bar .tab-item.active i { transform: scale(1.05); }
        /* hero */
        .hero-section {
            min-height: 88vh;
            display: flex;
            align-items: center;
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            margin-top: 68px;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0.25) 100%);
        }
        .hero-content { position: relative; z-index: 2; padding: 5rem 0; }
        .hero-content .hero-badge {
            display: inline-block;
            padding: 0.3rem 1.2rem;
            background: rgba(249,115,22,0.2);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(249,115,22,0.3);
            color: #fff;
            border-radius: 9999px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1.5rem;
        }
        .hero-content h1 {
            font-size: 3.5rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            max-width: 720px;
            letter-spacing: -0.02em;
            text-shadow: 0 2px 20px rgba(0,0,0,0.2);
        }
        .hero-content h1 span { color: #fdba74; }
        .hero-content p {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.9);
            max-width: 540px;
            margin-top: 1.5rem;
            margin-bottom: 2.5rem;
            line-height: 1.7;
            text-shadow: 0 1px 8px rgba(0,0,0,0.15);
        }
        .hero-content .hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
        .hero-content .hero-actions .btn-primary { background: #fff; color: var(--brand-primary-dark); box-shadow: 0 4px 20px rgba(0,0,0,0.15); }
        .hero-content .hero-actions .btn-primary:hover { background: #f5f5f4; transform: translateY(-2px); }
        .hero-content .hero-actions .btn-outline { border-color: rgba(255,255,255,0.7); color: #fff; }
        .hero-content .hero-actions .btn-outline:hover { background: rgba(255,255,255,0.15); border-color: #fff; }
        /* intro */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        .intro-grid .intro-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            height: 380px;
            object-fit: cover;
            width: 100%;
        }
        .intro-grid .intro-text h2 { font-size: 2rem; font-weight: 700; margin-bottom: 1rem; }
        .intro-grid .intro-text p { color: var(--text-muted); margin-bottom: 1.2rem; font-size: 1.05rem; line-height: 1.8; }
        .intro-grid .intro-text .feature-list { display: flex; flex-wrap: wrap; gap: 0.8rem 1.8rem; margin-top: 1.5rem; }
        .intro-grid .intro-text .feature-list li { display: flex; align-items: center; gap: 0.5rem; font-weight: 500; color: #44403c; }
        .intro-grid .intro-text .feature-list li i { color: var(--brand-primary); }
        /* category cards */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            height: 320px;
            display: flex;
            align-items: flex-end;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
        }
        .category-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-6px); }
        .category-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
        .category-card .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.1) 70%);
            transition: var(--transition-base);
        }
        .category-card:hover .overlay { background: linear-gradient(0deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.2) 70%); }
        .category-card .cat-content {
            position: relative;
            z-index: 2;
            padding: 2rem 1.75rem;
            color: #fff;
            width: 100%;
        }
        .category-card .cat-content h3 { font-size: 1.5rem; font-weight: 700; margin-bottom: 0.4rem; }
        .category-card .cat-content p { font-size: 0.95rem; opacity: 0.85; margin-bottom: 1rem; }
        .category-card .cat-content .cat-link { display: inline-flex; align-items: center; gap: 0.4rem; font-weight: 600; font-size: 0.9rem; color: #fdba74; transition: var(--transition-base); }
        .category-card .cat-content .cat-link:hover { gap: 0.7rem; color: #fff; }
        /* features */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .feature-card {
            text-align: center;
            padding: 2.5rem 2rem;
        }
        .feature-card .icon-wrap {
            width: 68px;
            height: 68px;
            border-radius: 50%;
            background: var(--brand-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.25rem auto;
            font-size: 1.8rem;
            color: var(--brand-primary-dark);
            transition: var(--transition-base);
        }
        .feature-card:hover .icon-wrap { background: var(--brand-primary); color: #fff; transform: scale(1.05); }
        .feature-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 0.6rem; }
        .feature-card p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; }
        /* news list */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .news-card {
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--bg-white);
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
        }
        .news-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
        .news-card .news-img { width: 100%; height: 200px; object-fit: cover; }
        .news-card .news-body { padding: 1.25rem 1.5rem 1.5rem; }
        .news-card .news-body .news-meta { display: flex; align-items: center; gap: 0.8rem; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 0.5rem; }
        .news-card .news-body .news-meta .badge { font-size: 0.7rem; padding: 0.15rem 0.7rem; }
        .news-card .news-body h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 0.5rem; line-height: 1.5; }
        .news-card .news-body p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-card .news-body .read-more { display: inline-flex; align-items: center; gap: 0.3rem; margin-top: 0.8rem; font-weight: 600; font-size: 0.85rem; color: var(--brand-primary); }
        .news-card .news-body .read-more:hover { gap: 0.6rem; color: var(--brand-primary-dark); }
        /* stats */
        .stats-section {
            background: linear-gradient(135deg, #1c1917 0%, #292524 100%);
            color: #fff;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            text-align: center;
        }
        .stats-grid .stat-item h3 { font-size: 2.8rem; font-weight: 800; color: #fdba74; margin-bottom: 0.3rem; }
        .stats-grid .stat-item p { font-size: 1rem; color: rgba(255,255,255,0.7); font-weight: 500; }
        .stats-grid .stat-item .stat-icon { font-size: 2rem; color: rgba(249,115,22,0.4); margin-bottom: 0.5rem; }
        /* faq */
        .faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 1rem; }
        .faq-item {
            background: var(--bg-white);
            border-radius: 12px;
            padding: 1.25rem 1.75rem;
            box-shadow: 0 2px 10px rgba(0,0,0,0.04);
            border: 1px solid var(--border-light);
            transition: var(--transition-base);
            cursor: pointer;
        }
        .faq-item:hover { border-color: var(--brand-primary-light); }
        .faq-item .faq-q { display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 1.05rem; color: var(--text-dark); }
        .faq-item .faq-q i { color: var(--brand-primary); transition: var(--transition-base); font-size: 1.1rem; }
        .faq-item.active .faq-q i { transform: rotate(180deg); }
        .faq-item .faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding 0.35s ease; color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; }
        .faq-item.active .faq-a { max-height: 300px; padding-top: 1rem; }
        /* cta */
        .cta-section {
            position: relative;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            padding: 6rem 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(249,115,22,0.9) 0%, rgba(234,88,12,0.85) 100%);
        }
        .cta-content { position: relative; z-index: 2; text-align: center; color: #fff; }
        .cta-content h2 { font-size: 2.5rem; font-weight: 800; margin-bottom: 1rem; }
        .cta-content p { font-size: 1.15rem; opacity: 0.9; max-width: 560px; margin: 0 auto 2rem; }
        .cta-content .btn-primary { background: #fff; color: var(--brand-primary-dark); box-shadow: 0 4px 20px rgba(0,0,0,0.2); }
        .cta-content .btn-primary:hover { background: #f5f5f4; transform: translateY(-2px); }
        /* footer */
        .site-footer {
            background: #1c1917;
            color: rgba(255,255,255,0.7);
            padding: 3.5rem 0 2rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .site-footer .footer-grid h4 { color: #fff; font-size: 1.1rem; font-weight: 700; margin-bottom: 1rem; }
        .site-footer .footer-grid p, .site-footer .footer-grid a { font-size: 0.9rem; color: rgba(255,255,255,0.6); line-height: 2; }
        .site-footer .footer-grid a:hover { color: #fdba74; }
        .site-footer .footer-grid .footer-brand .site-logo { color: #fff; margin-bottom: 0.8rem; }
        .site-footer .footer-grid .footer-brand .site-logo span { -webkit-text-fill-color: #fff; background: none; }
        .site-footer .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 1.5rem; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; font-size: 0.85rem; color: rgba(255,255,255,0.4); }
        .site-footer .footer-bottom a { color: rgba(255,255,255,0.5); }
        .site-footer .footer-bottom a:hover { color: #fdba74; }
        /* mobile hamburger */
        .hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; background: none; border: none; }
        .hamburger span { display: block; width: 24px; height: 2px; background: var(--text-dark); border-radius: 2px; transition: var(--transition-base); }
        .mobile-menu-overlay {
            position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 90; opacity: 0; pointer-events: none; transition: opacity 0.35s ease;
        }
        .mobile-menu-overlay.open { opacity: 1; pointer-events: auto; }
        .mobile-drawer {
            position: fixed; top: 0; left: 0; bottom: 0; width: 280px; background: #fff; z-index: 110; transform: translateX(-100%); transition: transform 0.35s ease; padding: 2rem 1.5rem; box-shadow: 4px 0 30px rgba(0,0,0,0.1);
        }
        .mobile-drawer.open { transform: translateX(0); }
        .mobile-drawer a { display: block; padding: 0.8rem 0; font-size: 1.05rem; font-weight: 500; color: var(--text-dark); border-bottom: 1px solid var(--border-light); }
        .mobile-drawer a:last-child { border-bottom: none; }
        .mobile-drawer a.active { color: var(--brand-primary-dark); font-weight: 700; }
        .mobile-drawer .close-btn { float: right; background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--text-muted); }
        /* responsive */
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .news-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .site-footer .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .hamburger { display: flex; }
            .mobile-tab-bar { display: flex; }
            .site-header .header-inner { height: 60px; }
            .hero-section { min-height: 70vh; margin-top: 60px; }
            .hero-content h1 { font-size: 2.2rem; }
            .hero-content p { font-size: 1rem; }
            .section-title { font-size: 1.8rem; }
            .section-padding { padding: 3rem 0; }
            .intro-grid { grid-template-columns: 1fr; gap: 2rem; }
            .intro-grid .intro-image { height: 240px; }
            .category-grid { grid-template-columns: 1fr; gap: 1.5rem; }
            .category-card { height: 240px; }
            .features-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
            .stats-grid .stat-item h3 { font-size: 2rem; }
            .site-footer .footer-grid { grid-template-columns: 1fr; }
            .site-footer .footer-bottom { flex-direction: column; text-align: center; }
            .cta-content h2 { font-size: 1.8rem; }
            .faq-item { padding: 1rem 1.25rem; }
            body { padding-bottom: 64px; }
            .hero-content .hero-actions { flex-direction: column; align-items: flex-start; }
        }
        @media (max-width: 520px) {
            .hero-content h1 { font-size: 1.8rem; }
            .section-title { font-size: 1.5rem; }
            .container { padding: 0 1rem; }
            .intro-grid .intro-image { height: 200px; }
            .category-card { height: 200px; }
            .stats-grid .stat-item h3 { font-size: 1.6rem; }
            .cta-content h2 { font-size: 1.5rem; }
        }
        @media (min-width: 769px) {
            .mobile-tab-bar { display: none !important; }
            body { padding-bottom: 0 !important; }
            .mobile-menu-overlay, .mobile-drawer { display: none; }
        }
        /* focus accessibility */
        a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
        }
        /* skeleton empty state */
        .empty-state { text-align: center; padding: 3rem 1rem; color: var(--text-muted); }
        .empty-state i { font-size: 3rem; opacity: 0.3; margin-bottom: 1rem; display: block; }
        .empty-state p { font-size: 1rem; }

/* roulang page: article */
:root {
            --brand-50: #f0f9f4;
            --brand-100: #dcf0e5;
            --brand-200: #bae0cc;
            --brand-300: #8ac9aa;
            --brand-400: #5aad85;
            --brand-500: #3a9b6e;
            --brand-600: #2a7d58;
            --brand-700: #1f6346;
            --brand-800: #1a4f39;
            --brand-900: #16412f;
            --accent-400: #f09e33;
            --accent-500: #ed8715;
            --accent-600: #de6c0b;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8a8aaa;
            --border-light: #e8ecf0;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
        }

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

        body {
            font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
            color: var(--text-primary);
            line-height: 1.7;
            background: #fafcfe;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 1rem;
            }
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--brand-600);
        }

        .site-logo i {
            font-size: 1.6rem;
            color: var(--brand-500);
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        .nav-desktop a {
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all 0.25s;
            position: relative;
        }

        .nav-desktop a:hover {
            color: var(--brand-600);
            background: var(--brand-50);
        }

        .nav-desktop a.active {
            color: var(--brand-600);
            font-weight: 600;
        }

        .nav-desktop a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 1rem;
            right: 1rem;
            height: 3px;
            background: var(--brand-500);
            border-radius: 2px;
        }

        .nav-desktop .nav-cta {
            background: var(--brand-500);
            color: #fff;
            padding: 0.5rem 1.4rem;
            border-radius: 999px;
            font-weight: 600;
            margin-left: 0.5rem;
        }

        .nav-desktop .nav-cta:hover {
            background: var(--brand-600);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(58, 155, 110, 0.35);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            border-radius: 6px;
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 3px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: 0.3s;
        }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 200;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            border-top: 1px solid var(--border-light);
            box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.06);
            padding: 0.3rem 0 env(safe-area-inset-bottom, 0.3rem) 0;
            justify-content: space-around;
        }

        .mobile-bottom-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 0.4rem 0.6rem;
            font-size: 0.7rem;
            color: var(--text-muted);
            transition: color 0.2s;
            min-width: 56px;
        }

        .mobile-bottom-nav a i {
            font-size: 1.3rem;
        }

        .mobile-bottom-nav a.active {
            color: var(--brand-500);
            font-weight: 600;
        }

        .mobile-bottom-nav a.active i {
            color: var(--brand-500);
        }

        .mobile-bottom-nav .nav-cta-mobile {
            color: var(--brand-500);
            font-weight: 600;
        }

        /* ===== Hero Banner ===== */
        .article-hero {
            position: relative;
            padding: 4rem 0 3.5rem;
            background: linear-gradient(135deg, var(--brand-50) 0%, #e8f5f0 100%);
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(58, 155, 110, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
        }

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

        .article-hero .breadcrumb a:hover {
            color: var(--brand-500);
        }

        .article-hero .breadcrumb .sep {
            color: #ccc;
        }

        .article-hero h1 {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            max-width: 800px;
            margin-bottom: 1rem;
        }

        .article-hero .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            font-size: 0.9rem;
            color: var(--text-secondary);
            align-items: center;
        }

        .article-hero .meta .tag {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            background: var(--brand-100);
            color: var(--brand-700);
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 500;
        }

        /* ===== Article Content ===== */
        .article-content-wrap {
            padding: 3rem 0 4rem;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 3rem;
        }

        .article-body {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 2.5rem;
            border: 1px solid var(--border-light);
        }

        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-primary);
        }

        .article-body .content p {
            margin-bottom: 1.4rem;
        }

        .article-body .content h2,
        .article-body .content h3 {
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .article-body .content h2 {
            font-size: 1.5rem;
        }

        .article-body .content h3 {
            font-size: 1.2rem;
        }

        .article-body .content img {
            border-radius: var(--radius-md);
            margin: 1.5rem 0;
            box-shadow: var(--shadow-sm);
        }

        .article-body .content ul,
        .article-body .content ol {
            margin-bottom: 1.4rem;
            padding-left: 1.6rem;
        }

        .article-body .content li {
            margin-bottom: 0.4rem;
        }

        .article-body .content blockquote {
            border-left: 4px solid var(--brand-400);
            background: var(--brand-50);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: normal;
        }

        .article-body .content a {
            color: var(--brand-600);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .article-body .content a:hover {
            color: var(--accent-500);
        }

        .article-not-found {
            text-align: center;
            padding: 4rem 2rem;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }

        .article-not-found i {
            font-size: 3rem;
            color: var(--text-muted);
            margin-bottom: 1rem;
        }

        .article-not-found h2 {
            font-size: 1.6rem;
            color: var(--text-primary);
            margin-bottom: 0.6rem;
        }

        .article-not-found p {
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
        }

        .article-not-found .btn-back {
            display: inline-block;
            padding: 0.7rem 2rem;
            background: var(--brand-500);
            color: #fff;
            border-radius: 999px;
            font-weight: 600;
            transition: all 0.25s;
        }

        .article-not-found .btn-back:hover {
            background: var(--brand-600);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(58, 155, 110, 0.3);
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }

        .sidebar-card {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            padding: 1.5rem;
        }

        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
            padding-bottom: 0.6rem;
            border-bottom: 2px solid var(--brand-100);
        }

        .sidebar-card .related-item {
            display: flex;
            gap: 0.8rem;
            padding: 0.7rem 0;
            border-bottom: 1px solid var(--border-light);
            transition: background 0.2s;
        }

        .sidebar-card .related-item:last-child {
            border-bottom: none;
        }

        .sidebar-card .related-item:hover {
            background: var(--brand-50);
            margin: 0 -0.8rem;
            padding: 0.7rem 0.8rem;
            border-radius: var(--radius-sm);
        }

        .sidebar-card .related-item img {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }

        .sidebar-card .related-item .info {
            flex: 1;
            min-width: 0;
        }

        .sidebar-card .related-item .info .title {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
        }

        .sidebar-card .related-item .info .date {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }

        .sidebar-cta {
            background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
            color: #fff;
            padding: 1.8rem 1.5rem;
            border-radius: var(--radius-lg);
            text-align: center;
        }

        .sidebar-cta h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .sidebar-cta p {
            font-size: 0.9rem;
            opacity: 0.9;
            margin-bottom: 1.2rem;
        }

        .sidebar-cta .btn-white {
            display: inline-block;
            padding: 0.6rem 1.8rem;
            background: #fff;
            color: var(--brand-700);
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.25s;
        }

        .sidebar-cta .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f1a14;
            color: #c8d6d0;
            padding: 3.5rem 0 1.5rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }

        .footer-brand .site-logo {
            color: #fff;
        }

        .footer-brand .site-logo i {
            color: var(--brand-300);
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.6;
            color: #9aaea6;
        }

        .footer-brand .social-links {
            display: flex;
            gap: 1rem;
            margin-top: 1.2rem;
        }

        .footer-brand .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: #c8d6d0;
            font-size: 1.1rem;
            transition: all 0.25s;
        }

        .footer-brand .social-links a:hover {
            background: var(--brand-500);
            color: #fff;
            transform: translateY(-2px);
        }

        .footer-grid h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }

        .footer-grid a {
            display: inline-block;
            color: #9aaea6;
            font-size: 0.9rem;
            padding: 0.2rem 0;
            transition: color 0.2s;
        }

        .footer-grid a:hover {
            color: var(--brand-300);
        }

        .footer-grid p {
            font-size: 0.9rem;
            margin-bottom: 0.4rem;
            color: #9aaea6;
        }

        .footer-grid p i {
            width: 1.2rem;
            color: var(--brand-300);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem;
            font-size: 0.85rem;
            color: #6a7f77;
        }

        .footer-bottom a {
            color: #6a7f77;
        }

        .footer-bottom a:hover {
            color: var(--brand-300);
        }

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

            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .mobile-bottom-nav {
                display: flex;
            }

            .site-header {
                position: sticky;
                top: 0;
            }

            .article-hero h1 {
                font-size: 1.6rem;
            }

            .article-hero {
                padding: 2.5rem 0 2rem;
            }

            .article-body {
                padding: 1.5rem;
            }

            .article-body .content {
                font-size: 1rem;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

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

            body {
                padding-bottom: 64px;
            }
        }

        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 1.3rem;
            }

            .article-hero .meta {
                font-size: 0.8rem;
                gap: 0.8rem;
            }

            .article-body {
                padding: 1.2rem;
            }

            .sidebar-card {
                padding: 1.2rem;
            }
        }

        /* ===== Mobile Menu Overlay ===== */
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.4);
            z-index: 150;
            backdrop-filter: blur(4px);
        }

        .mobile-menu-overlay.open {
            display: block;
        }

        .mobile-menu-panel {
            position: fixed;
            top: 70px;
            left: 0;
            right: 0;
            background: #fff;
            padding: 1.2rem 1.5rem 2rem;
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-lg);
            transform: translateY(-110%);
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 151;
        }

        .mobile-menu-panel.open {
            transform: translateY(0);
        }

        .mobile-menu-panel a {
            display: block;
            padding: 0.8rem 0;
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-light);
        }

        .mobile-menu-panel a:last-child {
            border-bottom: none;
        }

        .mobile-menu-panel a.active {
            color: var(--brand-600);
            font-weight: 700;
        }

        .mobile-menu-panel .nav-cta-mobile-panel {
            display: inline-block;
            margin-top: 0.6rem;
            padding: 0.6rem 1.6rem;
            background: var(--brand-500);
            color: #fff;
            border-radius: 999px;
            font-weight: 600;
            text-align: center;
            border-bottom: none;
        }

        .mobile-menu-panel .nav-cta-mobile-panel:hover {
            background: var(--brand-600);
        }

/* roulang page: category1 */
:root {
            --primary: #3b8a67;
            --primary-dark: #2d6e53;
            --accent: #e8881a;
            --accent-dark: #c96f10;
            --bg-light: #f8f7f5;
            --bg-white: #ffffff;
            --text-dark: #1a1a1a;
            --text-body: #3d3d3d;
            --text-muted: #8a8a8a;
            --border-light: #e8e5e0;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.10);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
        }
        * { margin:0; padding:0; box-sizing:border-box; }
        html { scroll-behavior:smooth; }
        body { font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif; color:var(--text-body); background:var(--bg-white); line-height:1.7; -webkit-font-smoothing:antialiased; }
        img { max-width:100%; height:auto; display:block; }
        a { color:inherit; text-decoration:none; transition:var(--transition); }
        a:focus-visible { outline:2px solid var(--primary); outline-offset:4px; border-radius:4px; }
        button { cursor:pointer; font-family:inherit; }
        .container { max-width:1200px; margin:0 auto; padding:0 24px; }
        .section-title { font-size:2.2rem; font-weight:700; color:var(--text-dark); line-height:1.25; letter-spacing:-0.02em; }
        .section-subtitle { font-size:1.05rem; color:var(--text-muted); max-width:640px; line-height:1.6; }
        .badge { display:inline-block; font-size:0.75rem; font-weight:600; letter-spacing:0.04em; padding:0.3rem 1rem; border-radius:999px; background:rgba(59,138,103,0.12); color:var(--primary-dark); }
        .badge-accent { background:rgba(232,136,26,0.12); color:var(--accent-dark); }
        .btn { display:inline-flex; align-items:center; gap:0.5rem; padding:0.75rem 2rem; font-size:0.95rem; font-weight:600; border-radius:999px; border:none; transition:var(--transition); background:var(--primary); color:#fff; }
        .btn:hover { background:var(--primary-dark); transform:translateY(-2px); box-shadow:0 8px 24px rgba(59,138,103,0.3); }
        .btn-accent { background:var(--accent); }
        .btn-accent:hover { background:var(--accent-dark); box-shadow:0 8px 24px rgba(232,136,26,0.3); }
        .btn-outline { background:transparent; color:var(--primary); border:2px solid var(--primary); }
        .btn-outline:hover { background:var(--primary); color:#fff; transform:translateY(-2px); }
        .card { background:var(--bg-white); border-radius:var(--radius-md); box-shadow:var(--shadow-sm); border:1px solid var(--border-light); transition:var(--transition); overflow:hidden; }
        .card:hover { box-shadow:var(--shadow-md); transform:translateY(-4px); }
        .card-img { width:100%; aspect-ratio:16/10; object-fit:cover; }
        .divider { width:60px; height:3px; border-radius:4px; background:var(--primary); margin:1.2rem 0; }
        .divider-center { margin-left:auto; margin-right:auto; }
        .text-gradient { background:linear-gradient(135deg,var(--primary),var(--accent)); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
        /* Header */
        .site-header { position:sticky; top:0; z-index:100; background:rgba(255,255,255,0.92); backdrop-filter:blur(16px); -webkit-backdrop-filter:blur(16px); border-bottom:1px solid rgba(232,229,224,0.5); transition:var(--transition); }
        .header-inner { display:flex; align-items:center; justify-content:space-between; height:72px; }
        .site-logo { display:flex; align-items:center; gap:0.55rem; font-size:1.5rem; font-weight:800; color:var(--text-dark); letter-spacing:-0.02em; }
        .site-logo i { color:var(--primary); font-size:1.6rem; }
        .site-logo:hover { opacity:0.85; }
        .nav-desktop { display:flex; align-items:center; gap:0.25rem; }
        .nav-desktop a { padding:0.5rem 1.1rem; font-size:0.92rem; font-weight:500; color:var(--text-body); border-radius:999px; transition:var(--transition); position:relative; }
        .nav-desktop a:hover { color:var(--primary); background:rgba(59,138,103,0.06); }
        .nav-desktop a.active { color:#fff; background:var(--primary); font-weight:600; }
        .nav-desktop a.active:hover { background:var(--primary-dark); }
        .nav-desktop a.nav-cta { background:var(--accent); color:#fff; font-weight:600; padding:0.5rem 1.4rem; }
        .nav-desktop a.nav-cta:hover { background:var(--accent-dark); transform:translateY(-1px); box-shadow:0 4px 16px rgba(232,136,26,0.3); }
        .hamburger { display:none; flex-direction:column; gap:5px; background:transparent; border:none; padding:6px; border-radius:8px; }
        .hamburger span { display:block; width:26px; height:2.5px; background:var(--text-dark); border-radius:4px; transition:var(--transition); }
        .hamburger:hover span { background:var(--primary); }
        /* Mobile Menu */
        .mobile-menu { display:none; position:fixed; top:72px; left:0; width:100%; height:calc(100vh - 72px); background:rgba(255,255,255,0.98); backdrop-filter:blur(20px); flex-direction:column; padding:2rem 1.5rem; gap:0.6rem; z-index:99; overflow-y:auto; }
        .mobile-menu.open { display:flex; }
        .mobile-menu a { display:block; padding:0.9rem 1.2rem; font-size:1.1rem; font-weight:500; color:var(--text-body); border-radius:var(--radius-sm); transition:var(--transition); }
        .mobile-menu a:hover { background:rgba(59,138,103,0.06); color:var(--primary); }
        .mobile-menu a.active { background:var(--primary); color:#fff; font-weight:600; }
        .mobile-menu a.nav-cta { background:var(--accent); color:#fff; text-align:center; margin-top:0.6rem; }
        /* Mobile Bottom Tab */
        .mobile-bottom-tab { display:none; position:fixed; bottom:0; left:0; width:100%; background:rgba(255,255,255,0.96); backdrop-filter:blur(16px); border-top:1px solid var(--border-light); z-index:100; padding:0.3rem 0 env(safe-area-inset-bottom,0.3rem) 0; }
        .mobile-bottom-tab .tab-inner { display:flex; justify-content:space-around; align-items:center; max-width:480px; margin:0 auto; }
        .mobile-bottom-tab a { display:flex; flex-direction:column; align-items:center; gap:0.1rem; padding:0.4rem 0.6rem; font-size:0.65rem; font-weight:500; color:var(--text-muted); transition:var(--transition); border-radius:12px; min-width:56px; }
        .mobile-bottom-tab a i { font-size:1.2rem; }
        .mobile-bottom-tab a.active { color:var(--primary); font-weight:600; }
        .mobile-bottom-tab a.active i { color:var(--primary); }
        .mobile-bottom-tab a:hover { color:var(--primary); }
        /* Hero */
        .hero-brand { position:relative; min-height:52vh; display:flex; align-items:center; background:linear-gradient(135deg, #1a3b2d 0%, #255a43 40%, #2d6e53 100%); overflow:hidden; }
        .hero-brand::before { content:''; position:absolute; inset:0; background:url('/assets/images/backpic/back-1.png') center/cover no-repeat; opacity:0.15; mix-blend-mode:overlay; }
        .hero-brand .hero-pattern { position:absolute; inset:0; background:radial-gradient(circle at 20% 80%, rgba(232,136,26,0.15) 0%, transparent 60%), radial-gradient(circle at 80% 20%, rgba(59,138,103,0.2) 0%, transparent 50%); }
        .hero-brand .container { position:relative; z-index:2; padding-top:3rem; padding-bottom:3rem; }
        .hero-brand h1 { font-size:3.2rem; font-weight:900; color:#fff; line-height:1.15; letter-spacing:-0.03em; max-width:720px; }
        .hero-brand p { font-size:1.1rem; color:rgba(255,255,255,0.8); max-width:560px; margin-top:1.2rem; line-height:1.7; }
        .hero-brand .hero-badge { display:inline-flex; align-items:center; gap:0.4rem; background:rgba(255,255,255,0.12); backdrop-filter:blur(8px); padding:0.4rem 1.2rem; border-radius:999px; font-size:0.8rem; color:rgba(255,255,255,0.9); margin-bottom:1.5rem; border:1px solid rgba(255,255,255,0.08); }
        /* Timeline */
        .timeline { position:relative; padding-left:2.5rem; }
        .timeline::before { content:''; position:absolute; left:10px; top:0; bottom:0; width:2.5px; background:linear-gradient(to bottom, var(--primary), var(--accent)); border-radius:4px; }
        .timeline-item { position:relative; padding:0 0 2.5rem 1.8rem; border-left:2px solid transparent; }
        .timeline-item:last-child { padding-bottom:0; }
        .timeline-item::before { content:''; position:absolute; left:-2.5rem; top:0.3rem; width:20px; height:20px; border-radius:50%; background:var(--bg-white); border:3px solid var(--primary); box-shadow:0 0 0 4px rgba(59,138,103,0.12); z-index:2; }
        .timeline-item.accent::before { border-color:var(--accent); box-shadow:0 0 0 4px rgba(232,136,26,0.12); }
        .timeline-item .year { font-size:0.85rem; font-weight:700; color:var(--primary); letter-spacing:0.04em; }
        .timeline-item.accent .year { color:var(--accent); }
        .timeline-item h3 { font-size:1.2rem; font-weight:600; color:var(--text-dark); margin:0.2rem 0 0.4rem; }
        .timeline-item p { font-size:0.95rem; color:var(--text-muted); line-height:1.6; }
        /* Value Cards */
        .value-card { text-align:center; padding:2.5rem 1.8rem; border-radius:var(--radius-md); background:var(--bg-white); border:1px solid var(--border-light); transition:var(--transition); }
        .value-card:hover { box-shadow:var(--shadow-md); transform:translateY(-6px); }
        .value-card .icon-wrap { width:64px; height:64px; border-radius:16px; display:flex; align-items:center; justify-content:center; font-size:1.6rem; margin:0 auto 1.2rem; background:rgba(59,138,103,0.08); color:var(--primary); transition:var(--transition); }
        .value-card:hover .icon-wrap { background:var(--primary); color:#fff; }
        .value-card h3 { font-size:1.1rem; font-weight:600; color:var(--text-dark); }
        .value-card p { font-size:0.92rem; color:var(--text-muted); margin-top:0.5rem; line-height:1.6; }
        /* Team / Honor */
        .honor-card { padding:2rem; text-align:center; border-radius:var(--radius-md); background:var(--bg-white); border:1px solid var(--border-light); transition:var(--transition); }
        .honor-card:hover { box-shadow:var(--shadow-md); transform:translateY(-4px); }
        .honor-card .num { font-size:2.8rem; font-weight:800; color:var(--primary); line-height:1.2; }
        .honor-card .label { font-size:0.92rem; color:var(--text-muted); margin-top:0.3rem; }
        /* FAQ */
        .faq-item { border-bottom:1px solid var(--border-light); padding:1.2rem 0; }
        .faq-item:first-child { padding-top:0; }
        .faq-question { display:flex; justify-content:space-between; align-items:center; font-size:1rem; font-weight:600; color:var(--text-dark); cursor:pointer; padding:0.4rem 0; transition:var(--transition); background:transparent; border:none; width:100%; text-align:left; font-family:inherit; }
        .faq-question:hover { color:var(--primary); }
        .faq-question i { transition:var(--transition); font-size:0.9rem; color:var(--text-muted); }
        .faq-question.open i { transform:rotate(180deg); color:var(--primary); }
        .faq-answer { max-height:0; overflow:hidden; transition:max-height 0.4s ease, padding 0.3s ease; padding:0 0.4rem; }
        .faq-answer.open { max-height:300px; padding:0.6rem 0.4rem 0.8rem; }
        .faq-answer p { font-size:0.95rem; color:var(--text-muted); line-height:1.7; }
        /* CTA */
        .cta-section { background:linear-gradient(135deg, #1a3b2d 0%, #2d6e53 100%); position:relative; overflow:hidden; }
        .cta-section::before { content:''; position:absolute; inset:0; background:url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity:0.06; mix-blend-mode:overlay; }
        .cta-section .container { position:relative; z-index:2; }
        /* Footer */
        .site-footer { background:#1a1a1a; color:rgba(255,255,255,0.7); padding:4rem 0 0; }
        .site-footer .site-logo { color:#fff; }
        .site-footer .site-logo i { color:var(--accent); }
        .footer-grid { display:grid; grid-template-columns:1.6fr 1fr 1fr 1.2fr; gap:2.5rem; padding-bottom:2.5rem; border-bottom:1px solid rgba(255,255,255,0.06); }
        .footer-grid h4 { font-size:0.95rem; font-weight:600; color:#fff; margin-bottom:1rem; }
        .footer-grid a { display:inline-block; font-size:0.88rem; color:rgba(255,255,255,0.6); line-height:2.2; }
        .footer-grid a:hover { color:var(--accent); }
        .footer-brand p { font-size:0.88rem; color:rgba(255,255,255,0.5); max-width:320px; line-height:1.7; }
        .footer-brand .social a { display:inline-flex; align-items:center; justify-content:center; width:40px; height:40px; border-radius:50%; background:rgba(255,255,255,0.05); color:rgba(255,255,255,0.6); font-size:1.1rem; transition:var(--transition); }
        .footer-brand .social a:hover { background:var(--accent); color:#fff; transform:translateY(-2px); }
        .footer-bottom { display:flex; justify-content:space-between; align-items:center; padding:1.5rem 0; font-size:0.82rem; color:rgba(255,255,255,0.4); flex-wrap:wrap; gap:0.6rem; }
        .footer-bottom a { color:rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color:var(--accent); }
        /* Responsive */
        @media (max-width:1024px) {
            .footer-grid { grid-template-columns:1fr 1fr; }
            .section-title { font-size:1.9rem; }
            .hero-brand h1 { font-size:2.6rem; }
        }
        @media (max-width:768px) {
            .nav-desktop { display:none; }
            .hamburger { display:flex; }
            .mobile-bottom-tab { display:block; }
            .section-title { font-size:1.6rem; }
            .section-subtitle { font-size:0.95rem; }
            .hero-brand { min-height:40vh; }
            .hero-brand h1 { font-size:2rem; }
            .hero-brand p { font-size:0.95rem; }
            .footer-grid { grid-template-columns:1fr; gap:2rem; }
            .footer-bottom { flex-direction:column; text-align:center; }
            .timeline { padding-left:1.8rem; }
            .timeline-item { padding-left:1.2rem; }
            .timeline-item::before { left:-1.85rem; width:16px; height:16px; }
            .value-card { padding:1.8rem 1.2rem; }
            .honor-card .num { font-size:2.2rem; }
        }
        @media (max-width:520px) {
            .container { padding:0 16px; }
            .hero-brand h1 { font-size:1.7rem; }
            .header-inner { height:64px; }
            .mobile-menu { top:64px; height:calc(100vh - 64px); }
            .section-title { font-size:1.4rem; }
            .btn { padding:0.6rem 1.4rem; font-size:0.85rem; }
            .mobile-bottom-tab a { font-size:0.6rem; min-width:48px; }
            .mobile-bottom-tab a i { font-size:1rem; }
        }

/* roulang page: category2 */
:root {
            --brand: #3a8a3a;
            --brand-dark: #2d6e2d;
            --brand-light: #dcefdc;
            --accent: #f08c24;
            --accent-dark: #e0731a;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8a8aaa;
            --bg-light: #f8faf8;
            --bg-card: #ffffff;
            --border-light: #e8ede8;
            --radius: 1rem;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.10);
            --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            color: var(--text-primary);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 1rem;
            }
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0,0,0,0.04);
            box-shadow: 0 1px 12px rgba(0,0,0,0.04);
            transition: var(--transition);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--brand);
            letter-spacing: -0.01em;
        }
        .site-logo i {
            font-size: 1.8rem;
            color: var(--brand);
        }
        .site-logo span {
            color: var(--text-primary);
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 0.2rem;
        }
        .nav-desktop a {
            padding: 0.5rem 1rem;
            border-radius: 2rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-desktop a:hover {
            color: var(--brand);
            background: var(--brand-light);
        }
        .nav-desktop a.active {
            color: var(--brand);
            background: var(--brand-light);
            font-weight: 600;
        }
        .nav-desktop a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--brand);
        }
        .nav-desktop .nav-cta {
            background: var(--brand);
            color: #fff;
            padding: 0.5rem 1.6rem;
            border-radius: 2rem;
            font-weight: 600;
            margin-left: 0.6rem;
            box-shadow: 0 4px 12px rgba(58,138,58,0.25);
        }
        .nav-desktop .nav-cta:hover {
            background: var(--brand-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(58,138,58,0.35);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            border-radius: 8px;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger:hover span {
            background: var(--brand);
        }

        /* ===== Mobile Menu ===== */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255,255,255,0.98);
            backdrop-filter: blur(20px);
            z-index: 999;
            flex-direction: column;
            padding: 2rem 1.5rem;
            gap: 0.8rem;
            overflow-y: auto;
            animation: fadeInDown 0.3s ease;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            display: block;
            padding: 0.9rem 1.2rem;
            border-radius: 1rem;
            font-size: 1.1rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--brand-light);
            color: var(--brand);
        }
        .mobile-menu a.active {
            font-weight: 700;
        }
        .mobile-menu .nav-cta {
            background: var(--brand);
            color: #fff;
            text-align: center;
            margin-top: 0.6rem;
        }
        .mobile-menu .nav-cta:hover {
            background: var(--brand-dark);
            color: #fff;
        }

        /* ===== Bottom Tab (mobile) ===== */
        .bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(16px);
            border-top: 1px solid rgba(0,0,0,0.06);
            box-shadow: 0 -2px 16px rgba(0,0,0,0.04);
            padding: 0.3rem 0 env(safe-area-inset-bottom, 0.3rem) 0;
            justify-content: space-around;
            align-items: center;
        }
        .bottom-tab a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 0.4rem 0.6rem;
            font-size: 0.65rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: 0.8rem;
            transition: var(--transition);
            min-width: 56px;
        }
        .bottom-tab a i {
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .bottom-tab a:hover,
        .bottom-tab a.active {
            color: var(--brand);
        }
        .bottom-tab a.active i {
            color: var(--brand);
            transform: scale(1.05);
        }
        .bottom-tab a.active {
            font-weight: 600;
        }

        @keyframes fadeInDown {
            from {
                opacity: 0;
                transform: translateY(-12px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 8rem 1.5rem 4rem;
            background: linear-gradient(135deg, rgba(26,26,46,0.75) 0%, rgba(58,138,58,0.55) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-light), transparent);
        }
        .category-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 1rem;
            text-shadow: 0 4px 30px rgba(0,0,0,0.2);
        }
        .category-hero p {
            font-size: 1.2rem;
            max-width: 620px;
            margin: 0 auto;
            opacity: 0.92;
            line-height: 1.8;
        }
        .category-hero .hero-badge {
            display: inline-block;
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.2);
            padding: 0.3rem 1.2rem;
            border-radius: 2rem;
            font-size: 0.85rem;
            letter-spacing: 0.05em;
            margin-bottom: 1.2rem;
        }
        @media (max-width: 768px) {
            .category-hero {
                min-height: 320px;
                padding: 7rem 1rem 3rem;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.6rem;
            }
        }

        /* ===== Section spacing ===== */
        .section {
            padding: 5rem 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 0.6rem;
            color: var(--text-primary);
            letter-spacing: -0.01em;
        }
        .section-sub {
            text-align: center;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 3rem;
            font-size: 1.05rem;
        }
        @media (max-width: 768px) {
            .section {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-sub {
                font-size: 0.95rem;
                margin-bottom: 2rem;
            }
        }

        /* ===== Cards ===== */
        .product-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .product-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .product-card .card-img {
            height: 200px;
            background: var(--brand-light);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            position: relative;
        }
        .product-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .product-card:hover .card-img img {
            transform: scale(1.04);
        }
        .product-card .card-body {
            padding: 1.6rem 1.4rem 1.8rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .product-card .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text-primary);
        }
        .product-card .card-body p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            flex: 1;
            margin-bottom: 1rem;
        }
        .product-card .card-body .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            background: var(--brand-light);
            color: var(--brand);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.25rem 0.8rem;
            border-radius: 2rem;
            align-self: flex-start;
            margin-bottom: 0.6rem;
        }
        .product-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 1.4rem 1.4rem;
        }
        .product-card .card-footer .btn-outline {
            padding: 0.4rem 1.2rem;
            border: 1.5px solid var(--brand);
            color: var(--brand);
            border-radius: 2rem;
            font-size: 0.85rem;
            font-weight: 600;
            transition: var(--transition);
        }
        .product-card .card-footer .btn-outline:hover {
            background: var(--brand);
            color: #fff;
        }

        /* ===== Feature list ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 1.8rem;
        }
        .feature-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 2rem 1.6rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            text-align: center;
        }
        .feature-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .feature-item .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--brand-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            font-size: 1.6rem;
            color: var(--brand);
            transition: var(--transition);
        }
        .feature-item:hover .icon-wrap {
            background: var(--brand);
            color: #fff;
            transform: scale(1.06);
        }
        .feature-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
        }
        .feature-item p {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        /* ===== Process ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            counter-reset: step;
        }
        .process-step {
            text-align: center;
            position: relative;
            counter-increment: step;
        }
        .process-step .step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--brand);
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            box-shadow: 0 8px 24px rgba(58,138,58,0.25);
        }
        .process-step .step-num::before {
            content: counter(step);
        }
        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.3rem;
        }
        .process-step p {
            color: var(--text-secondary);
            font-size: 0.88rem;
            max-width: 200px;
            margin: 0 auto;
        }
        .process-step::after {
            content: '';
            position: absolute;
            top: 26px;
            right: -1rem;
            width: 2rem;
            height: 2px;
            background: var(--border-light);
        }
        .process-step:last-child::after {
            display: none;
        }
        @media (max-width: 768px) {
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .process-step::after {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Case cards ===== */
        .case-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .case-card .case-img {
            height: 180px;
            overflow: hidden;
        }
        .case-card .case-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .case-card:hover .case-img img {
            transform: scale(1.04);
        }
        .case-card .case-body {
            padding: 1.4rem 1.4rem 1.6rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .case-card .case-body .case-tag {
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--accent);
            background: var(--accent-50, #fef8ee);
            padding: 0.2rem 0.8rem;
            border-radius: 2rem;
            align-self: flex-start;
            margin-bottom: 0.5rem;
        }
        .case-card .case-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.3rem;
        }
        .case-card .case-body p {
            color: var(--text-secondary);
            font-size: 0.88rem;
            flex: 1;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: 1rem;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--brand-light);
        }
        .faq-item .faq-q {
            padding: 1.2rem 1.6rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            user-select: none;
            transition: var(--transition);
        }
        .faq-item .faq-q:hover {
            color: var(--brand);
        }
        .faq-item .faq-q i {
            transition: var(--transition);
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .faq-item .faq-a {
            padding: 0 1.6rem 1.2rem;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
            color: var(--brand);
        }
        .faq-item.open .faq-a {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
            color: #fff;
            text-align: center;
            padding: 4.5rem 1.5rem;
            border-radius: 2rem;
            margin: 2rem 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255,255,255,0.05);
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -15%;
            width: 250px;
            height: 250px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.9;
            max-width: 520px;
            margin: 0 auto 2rem;
            position: relative;
            z-index: 1;
        }
        .cta-section .btn-cta {
            display: inline-block;
            background: #fff;
            color: var(--brand);
            padding: 0.8rem 2.4rem;
            border-radius: 2rem;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 8px 30px rgba(0,0,0,0.12);
            position: relative;
            z-index: 1;
        }
        .cta-section .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(0,0,0,0.18);
            background: #f8f8f8;
        }
        .cta-section .btn-cta i {
            margin-right: 0.5rem;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 3rem 1rem;
                border-radius: 1.2rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1a1a2e;
            color: rgba(255,255,255,0.8);
            padding: 4rem 0 2rem;
            margin-top: 4rem;
        }
        .site-footer .site-logo {
            color: #fff;
        }
        .site-footer .site-logo span {
            color: #fff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 2.5rem;
        }
        .footer-grid h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: #fff;
        }
        .footer-grid a {
            color: rgba(255,255,255,0.65);
            font-size: 0.9rem;
            line-height: 2.2;
            transition: var(--transition);
        }
        .footer-grid a:hover {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
            line-height: 1.7;
            margin-top: 0.8rem;
        }
        .footer-brand .social-links {
            display: flex;
            gap: 1rem;
            margin-top: 1.2rem;
        }
        .footer-brand .social-links a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: rgba(255,255,255,0.7);
            transition: var(--transition);
        }
        .footer-brand .social-links a:hover {
            background: var(--brand);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            margin-top: 2.5rem;
            padding-top: 1.8rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
            flex-wrap: wrap;
            gap: 0.6rem;
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.55);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        .footer-bottom .footer-links a {
            margin: 0 0.4rem;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Responsive Nav ===== */
        @media (max-width: 868px) {
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .bottom-tab {
                display: flex;
            }
            .site-header {
                box-shadow: 0 1px 12px rgba(0,0,0,0.04);
            }
            body {
                padding-bottom: 64px;
            }
        }
        @media (min-width: 869px) {
            .mobile-menu {
                display: none !important;
            }
            .bottom-tab {
                display: none !important;
            }
            .hamburger {
                display: none !important;
            }
        }

        /* ===== Misc ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.8rem;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
        }
        .badge {
            display: inline-block;
            background: var(--brand-light);
            color: var(--brand);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.9rem;
            border-radius: 2rem;
        }
        .text-brand {
            color: var(--brand);
        }
        .bg-brand-soft {
            background: var(--brand-light);
        }
        .shadow-card {
            box-shadow: var(--shadow-sm);
        }
        .shadow-card:hover {
            box-shadow: var(--shadow-md);
        }
        .rounded-xl {
            border-radius: 1rem;
        }
        .transition-all {
            transition: var(--transition);
        }

        /* FAQ toggle via JS */
        .faq-toggle {
            cursor: pointer;
        }

        /* focus-visible for accessibility */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid var(--brand);
            outline-offset: 2px;
        }

/* roulang page: category3 */
:root {
            --primary: #0f766e;
            --primary-light: #14b8a6;
            --primary-dark: #0d5e57;
            --accent: #f59e0b;
            --bg-light: #f9fafb;
            --bg-white: #ffffff;
            --text-dark: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --radius: 1rem;
            --radius-sm: 0.6rem;
            --transition: all 0.25s ease;
        }
        * { margin:0; padding:0; box-sizing:border-box; }
        body { font-family:'Inter', system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif; background:var(--bg-light); color:var(--text-dark); line-height:1.6; }
        a { text-decoration:none; color:inherit; transition:var(--transition); }
        img { max-width:100%; height:auto; display:block; border-radius:var(--radius-sm); }
        .container { max-width:1200px; margin:0 auto; padding:0 1.5rem; }
        /* Header & Nav */
        .site-header { background:rgba(255,255,255,0.95); backdrop-filter:blur(12px); border-bottom:1px solid var(--border); position:sticky; top:0; z-index:100; }
        .header-inner { display:flex; align-items:center; justify-content:space-between; padding:0.8rem 0; }
        .site-logo { display:flex; align-items:center; gap:0.5rem; font-size:1.5rem; font-weight:700; color:var(--primary); }
        .site-logo i { font-size:1.6rem; color:var(--accent); }
        .site-logo span { background:linear-gradient(135deg,var(--primary),var(--primary-light)); -webkit-background-clip:text; -webkit-text-fill-color:transparent; }
        .nav-desktop { display:flex; align-items:center; gap:2rem; }
        .nav-desktop a { font-size:0.95rem; font-weight:500; color:var(--text-dark); padding:0.4rem 0; position:relative; transition:var(--transition); }
        .nav-desktop a::after { content:''; position:absolute; bottom:0; left:0; width:0; height:2px; background:var(--primary); border-radius:2px; transition:var(--transition); }
        .nav-desktop a:hover::after,
        .nav-desktop a.active::after { width:100%; }
        .nav-desktop a:hover { color:var(--primary); }
        .nav-desktop a.active { color:var(--primary); font-weight:600; }
        .nav-desktop .nav-cta { background:linear-gradient(135deg,var(--primary),var(--primary-light)); color:#fff!important; padding:0.5rem 1.4rem!important; border-radius:50px; font-weight:600; font-size:0.9rem; box-shadow:0 4px 12px rgba(15,118,110,0.35); transition:var(--transition); }
        .nav-desktop .nav-cta:hover { transform:translateY(-2px); box-shadow:0 8px 24px rgba(15,118,110,0.45); }
        .nav-desktop .nav-cta::after { display:none; }
        .hamburger { display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:4px; }
        .hamburger span { width:26px; height:2.5px; background:var(--text-dark); border-radius:4px; transition:var(--transition); }
        /* Mobile Menu */
        .mobile-menu { position:fixed; top:0; left:0; width:100%; height:100%; background:rgba(0,0,0,0.5); z-index:200; opacity:0; pointer-events:none; transition:var(--transition); }
        .mobile-menu.open { opacity:1; pointer-events:all; }
        .mobile-menu-inner { position:absolute; top:0; right:0; width:80%; max-width:340px; height:100%; background:var(--bg-white); padding:2rem 1.8rem; box-shadow:var(--shadow-lg); overflow-y:auto; transform:translateX(100%); transition:var(--transition); }
        .mobile-menu.open .mobile-menu-inner { transform:translateX(0); }
        .mobile-menu-close { position:absolute; top:1.2rem; right:1.4rem; font-size:1.6rem; background:none; border:none; cursor:pointer; color:var(--text-dark); }
        .mobile-menu a { display:block; padding:0.9rem 0; font-size:1.1rem; font-weight:500; color:var(--text-dark); border-bottom:1px solid var(--border); }
        .mobile-menu a.active { color:var(--primary); font-weight:600; }
        .mobile-menu .nav-cta-mobile { display:inline-block; margin-top:1.2rem; background:linear-gradient(135deg,var(--primary),var(--primary-light)); color:#fff!important; padding:0.7rem 2rem; border-radius:50px; font-weight:600; text-align:center; border:none; }
        /* Mobile Bottom Tab */
        .bottom-tab { display:none; position:fixed; bottom:0; left:0; width:100%; background:rgba(255,255,255,0.96); backdrop-filter:blur(12px); border-top:1px solid var(--border); z-index:90; padding:0.3rem 0; box-shadow:0 -4px 20px rgba(0,0,0,0.05); }
        .bottom-tab-inner { display:flex; justify-content:space-around; align-items:center; }
        .bottom-tab a { display:flex; flex-direction:column; align-items:center; padding:0.3rem 0.5rem; font-size:0.7rem; color:var(--text-muted); transition:var(--transition); min-width:0; }
        .bottom-tab a i { font-size:1.3rem; margin-bottom:2px; }
        .bottom-tab a.active { color:var(--primary); }
        .bottom-tab a.active i { color:var(--primary); }
        .bottom-tab .tab-cta { background:linear-gradient(135deg,var(--primary),var(--primary-light)); color:#fff!important; border-radius:50px; padding:0.2rem 0.8rem; }
        /* Hero */
        .hero-cat { position:relative; padding:4rem 0 3.5rem; background:linear-gradient(135deg,#0f766e,#0d5e57); color:#fff; overflow:hidden; min-height:280px; display:flex; align-items:center; }
        .hero-cat::before { content:''; position:absolute; inset:0; background:url('/assets/images/backpic/back-1.png') center/cover no-repeat; opacity:0.25; mix-blend-mode:overlay; }
        .hero-cat .container { position:relative; z-index:2; }
        .hero-cat h1 { font-size:2.8rem; font-weight:800; letter-spacing:-0.02em; line-height:1.2; margin-bottom:0.8rem; }
        .hero-cat p { font-size:1.1rem; opacity:0.9; max-width:640px; line-height:1.7; }
        .hero-cat .hero-tag { display:inline-block; background:rgba(255,255,255,0.18); padding:0.3rem 1rem; border-radius:50px; font-size:0.85rem; font-weight:500; margin-bottom:1.2rem; backdrop-filter:blur(4px); }
        /* Section */
        .section { padding:4rem 0; }
        .section-title { text-align:center; margin-bottom:2.8rem; }
        .section-title h2 { font-size:2rem; font-weight:700; color:var(--text-dark); margin-bottom:0.6rem; }
        .section-title p { color:var(--text-muted); max-width:560px; margin:0 auto; font-size:1rem; }
        /* Tags */
        .tag-group { display:flex; flex-wrap:wrap; gap:0.6rem; justify-content:center; margin-bottom:2rem; }
        .tag-btn { padding:0.45rem 1.2rem; border-radius:50px; font-size:0.85rem; font-weight:500; border:1px solid var(--border); background:var(--bg-white); color:var(--text-muted); cursor:pointer; transition:var(--transition); }
        .tag-btn.active { background:var(--primary); color:#fff; border-color:var(--primary); box-shadow:0 4px 12px rgba(15,118,110,0.3); }
        .tag-btn:hover { border-color:var(--primary); color:var(--primary); }
        .tag-btn.active:hover { color:#fff; }
        /* News Cards */
        .news-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:1.8rem; }
        .news-card { background:var(--bg-white); border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow-sm); transition:var(--transition); display:flex; flex-direction:column; border:1px solid transparent; }
        .news-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-md); border-color:var(--border); }
        .news-card .card-img { width:100%; height:200px; object-fit:cover; border-radius:0; }
        .news-card .card-body { padding:1.2rem 1.4rem 1.4rem; flex:1; display:flex; flex-direction:column; }
        .news-card .card-tag { display:inline-block; font-size:0.75rem; font-weight:600; color:var(--primary); background:rgba(15,118,110,0.08); padding:0.2rem 0.8rem; border-radius:50px; margin-bottom:0.5rem; width:fit-content; }
        .news-card h3 { font-size:1.1rem; font-weight:600; line-height:1.4; margin-bottom:0.5rem; color:var(--text-dark); }
        .news-card h3 a { color:inherit; }
        .news-card h3 a:hover { color:var(--primary); }
        .news-card .card-excerpt { font-size:0.9rem; color:var(--text-muted); line-height:1.6; flex:1; margin-bottom:0.8rem; }
        .news-card .card-meta { display:flex; align-items:center; gap:0.8rem; font-size:0.8rem; color:var(--text-light); border-top:1px solid var(--border); padding-top:0.8rem; }
        .news-card .card-meta i { margin-right:0.3rem; }
        /* Featured / Hot */
        .hot-news { background:var(--bg-white); border-radius:var(--radius); padding:1.8rem 2rem; box-shadow:var(--shadow-sm); margin-top:2rem; }
        .hot-news h3 { font-size:1.3rem; font-weight:700; margin-bottom:1.2rem; display:flex; align-items:center; gap:0.5rem; }
        .hot-news h3 i { color:var(--accent); }
        .hot-list { display:grid; grid-template-columns:repeat(2,1fr); gap:1rem; }
        .hot-item { display:flex; align-items:center; gap:1rem; padding:0.8rem 0; border-bottom:1px solid var(--border); }
        .hot-item:last-child { border-bottom:none; }
        .hot-item .hot-num { width:2rem; height:2rem; border-radius:50%; background:var(--bg-light); display:flex; align-items:center; justify-content:center; font-size:0.85rem; font-weight:700; color:var(--text-muted); flex-shrink:0; }
        .hot-item:nth-child(1) .hot-num { background:var(--accent); color:#fff; }
        .hot-item:nth-child(2) .hot-num { background:#f97316; color:#fff; }
        .hot-item:nth-child(3) .hot-num { background:#eab308; color:#fff; }
        .hot-item a { font-size:0.95rem; font-weight:500; color:var(--text-dark); line-height:1.4; }
        .hot-item a:hover { color:var(--primary); }
        .hot-item .hot-meta { font-size:0.75rem; color:var(--text-light); white-space:nowrap; }
        /* CTA Subscribe */
        .cta-subscribe { background:linear-gradient(135deg,#0f766e,#0d5e57); border-radius:var(--radius); padding:3rem 2.5rem; text-align:center; color:#fff; position:relative; overflow:hidden; }
        .cta-subscribe::before { content:''; position:absolute; inset:0; background:url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity:0.12; mix-blend-mode:overlay; }
        .cta-subscribe .container { position:relative; z-index:2; }
        .cta-subscribe h2 { font-size:1.8rem; font-weight:700; margin-bottom:0.6rem; }
        .cta-subscribe p { opacity:0.9; margin-bottom:1.5rem; font-size:1rem; max-width:480px; margin-left:auto; margin-right:auto; }
        .subscribe-form { display:flex; gap:0.8rem; max-width:480px; margin:0 auto; flex-wrap:wrap; justify-content:center; }
        .subscribe-form input { flex:1; min-width:180px; padding:0.7rem 1.2rem; border-radius:50px; border:none; font-size:0.95rem; outline:none; box-shadow:0 2px 8px rgba(0,0,0,0.08); }
        .subscribe-form button { background:var(--accent); color:#fff; border:none; padding:0.7rem 2rem; border-radius:50px; font-weight:600; font-size:0.95rem; cursor:pointer; transition:var(--transition); box-shadow:0 4px 12px rgba(245,158,11,0.4); }
        .subscribe-form button:hover { transform:translateY(-2px); box-shadow:0 8px 24px rgba(245,158,11,0.5); }
        /* FAQ */
        .faq-list { max-width:780px; margin:0 auto; }
        .faq-item { background:var(--bg-white); border-radius:var(--radius-sm); margin-bottom:0.8rem; box-shadow:var(--shadow-sm); overflow:hidden; transition:var(--transition); }
        .faq-item:hover { box-shadow:var(--shadow-md); }
        .faq-question { padding:1.2rem 1.5rem; font-weight:600; font-size:1rem; cursor:pointer; display:flex; justify-content:space-between; align-items:center; color:var(--text-dark); background:var(--bg-white); border:none; width:100%; text-align:left; transition:var(--transition); }
        .faq-question i { transition:transform 0.3s ease; color:var(--primary); font-size:0.9rem; }
        .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 1.5rem; color:var(--text-muted); line-height:1.7; font-size:0.95rem; }
        .faq-item.open .faq-answer { max-height:300px; padding:0 1.5rem 1.2rem; }
        /* Footer */
        .site-footer { background:#0f172a; color:rgba(255,255,255,0.85); padding:3.5rem 0 0; }
        .footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:2.5rem; padding-bottom:2rem; border-bottom:1px solid rgba(255,255,255,0.08); }
        .footer-brand .site-logo { color:#fff; font-size:1.4rem; }
        .footer-brand .site-logo span { -webkit-text-fill-color:#fff; }
        .footer-brand p { font-size:0.9rem; line-height:1.7; opacity:0.75; }
        .footer-brand a[aria-label] { color:rgba(255,255,255,0.7); font-size:1.2rem; transition:var(--transition); }
        .footer-brand a[aria-label]:hover { color:var(--accent); }
        .site-footer h4 { font-size:1rem; font-weight:600; margin-bottom:1rem; color:#fff; }
        .site-footer a { color:rgba(255,255,255,0.7); font-size:0.9rem; line-height:2; transition:var(--transition); }
        .site-footer a:hover { color:var(--accent); }
        .site-footer p { font-size:0.9rem; opacity:0.75; margin-bottom:0.3rem; }
        .footer-bottom { display:flex; justify-content:space-between; align-items:center; padding:1.5rem 0; font-size:0.85rem; opacity:0.6; flex-wrap:wrap; gap:0.5rem; }
        .footer-bottom a { color:rgba(255,255,255,0.7); }
        .footer-bottom a:hover { color:var(--accent); }
        /* Responsive */
        @media (max-width:1024px) {
            .news-grid { grid-template-columns:repeat(2,1fr); }
            .footer-grid { grid-template-columns:1fr 1fr; }
        }
        @media (max-width:768px) {
            .nav-desktop { display:none; }
            .hamburger { display:flex; }
            .bottom-tab { display:block; }
            .hero-cat { padding:3rem 0 2.5rem; min-height:220px; }
            .hero-cat h1 { font-size:2rem; }
            .hero-cat p { font-size:0.95rem; }
            .section { padding:2.5rem 0; }
            .section-title h2 { font-size:1.5rem; }
            .news-grid { grid-template-columns:1fr; gap:1.2rem; }
            .hot-list { grid-template-columns:1fr; }
            .hot-news { padding:1.2rem; }
            .cta-subscribe { padding:2rem 1.2rem; }
            .cta-subscribe h2 { font-size:1.3rem; }
            .subscribe-form input { min-width:140px; }
            .footer-grid { grid-template-columns:1fr; gap:1.5rem; }
            .footer-bottom { flex-direction:column; text-align:center; }
            .site-footer { padding-bottom:5rem; }
        }
        @media (max-width:520px) {
            .container { padding:0 1rem; }
            .hero-cat h1 { font-size:1.6rem; }
            .tag-btn { font-size:0.75rem; padding:0.3rem 0.9rem; }
            .news-card .card-img { height:160px; }
        }