/* roulang page: index */
:root {
            --primary: #c8102e;
            --primary-dark: #a00d24;
            --primary-light: #e8c4c9;
            --accent: #1a1a2e;
            --accent-light: #2d2d44;
            --bg: #f8f7f4;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-weak: #6b7280;
            --border: #e5e7eb;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(200,16,46,0.12);
            --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

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

        button, .btn {
            cursor: pointer;
            font-family: inherit;
            transition: var(--transition);
        }

        /* === Header / Nav === */
        .site-header {
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 0 24px;
        }

        .nav-panel {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1200px;
            margin: 0 auto;
            padding: 14px 0;
            gap: 20px;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            font-size: 1.4rem;
            color: var(--primary);
        }
        .logo span {
            color: var(--accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            background: var(--bg);
            padding: 4px;
            border-radius: 40px;
            border: 1px solid var(--border);
        }
        .nav-links li a {
            display: block;
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links li a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(200,16,46,0.25);
        }

        .nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 10px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 16px rgba(200,16,46,0.25);
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(200,16,46,0.35);
            color: #fff;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text);
            padding: 4px 8px;
            border-radius: 8px;
        }
        .mobile-toggle:hover {
            background: var(--bg);
        }

        /* === Hero === */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #1a1a2e 0%, #2d2d44 50%, #1a1a2e 100%);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.3;
            mix-blend-mode: overlay;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(200,16,46,0.15) 0%, transparent 70%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            padding: 80px 24px;
        }
        .hero-tag {
            display: inline-block;
            background: rgba(200,16,46,0.2);
            color: #fca5a5;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(200,16,46,0.3);
        }
        .hero h1 {
            font-size: 3.5rem;
            font-weight: 900;
            color: #fff;
            line-height: 1.15;
            letter-spacing: -1px;
            margin-bottom: 20px;
        }
        .hero h1 span {
            color: var(--primary);
            background: linear-gradient(135deg, #fca5a5, #ef4444);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.8);
            max-width: 560px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-btn-primary {
            background: var(--primary);
            color: #fff;
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 8px 28px rgba(200,16,46,0.35);
        }
        .hero-btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(200,16,46,0.45);
            color: #fff;
        }
        .hero-btn-secondary {
            background: rgba(255,255,255,0.1);
            color: #fff;
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid rgba(255,255,255,0.2);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            backdrop-filter: blur(4px);
        }
        .hero-btn-secondary:hover {
            background: rgba(255,255,255,0.2);
            transform: translateY(-3px);
            color: #fff;
        }

        /* === Section通用 === */
        .section {
            padding: 80px 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            text-align: center;
            margin-bottom: 12px;
            color: var(--accent);
        }
        .section-sub {
            text-align: center;
            color: var(--text-weak);
            max-width: 600px;
            margin: 0 auto 48px;
            font-size: 1.05rem;
        }
        .section-title-left {
            text-align: left;
        }
        .section-sub-left {
            margin: 0 0 40px;
            text-align: left;
        }

        /* === 卡片网格 === */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 32px 28px;
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 18px;
            background: var(--primary);
        }
        .card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--accent);
        }
        .card p {
            color: var(--text-weak);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary);
        }
        .card-link:hover {
            gap: 12px;
        }

        /* === 分类卡片（封面图） === */
        .cat-card {
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--bg-card);
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
            cursor: pointer;
        }
        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .cat-card-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .cat-card-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(0,0,0,0.5) 0%, transparent 60%);
        }
        .cat-card-body {
            padding: 20px 24px 24px;
        }
        .cat-card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--accent);
        }
        .cat-card-body p {
            color: var(--text-weak);
            font-size: 0.9rem;
            line-height: 1.5;
        }
        .cat-card-body .badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-top: 12px;
        }

        /* === 资讯列表 === */
        .post-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .post-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: var(--bg-card);
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .post-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }
        .post-thumb {
            width: 100px;
            height: 72px;
            border-radius: 8px;
            background-size: cover;
            background-position: center;
            flex-shrink: 0;
        }
        .post-info {
            flex: 1;
        }
        .post-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--accent);
        }
        .post-info h4 a {
            color: var(--accent);
        }
        .post-info h4 a:hover {
            color: var(--primary);
        }
        .post-meta {
            font-size: 0.8rem;
            color: var(--text-weak);
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .post-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .post-meta .cat-tag {
            background: var(--primary-light);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 12px;
            font-weight: 500;
            font-size: 0.7rem;
        }
        .post-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--text-weak);
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        .post-empty i {
            font-size: 2.5rem;
            color: var(--border);
            margin-bottom: 12px;
        }

        /* === 数据/流程 === */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            background: var(--bg-card);
            padding: 32px 16px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-weak);
            margin-top: 6px;
        }

        /* === 流程步骤 === */
        .step-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 28px 32px;
            border: 1px solid var(--border);
            position: relative;
            transition: var(--transition);
            counter-increment: step;
        }
        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .step-card::before {
            content: "0" counter(step);
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 3rem;
            font-weight: 900;
            color: var(--primary-light);
            line-height: 1;
            opacity: 0.5;
        }
        .step-card .step-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 18px;
        }
        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--accent);
        }
        .step-card p {
            color: var(--text-weak);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* === FAQ === */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--accent);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: inherit;
        }
        .faq-question i {
            transition: transform 0.3s;
            color: var(--primary);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-weak);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* === CTA === */
        .cta-section {
            background: linear-gradient(135deg, #1a1a2e 0%, #2d2d44 100%);
            border-radius: var(--radius);
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
            mix-blend-mode: overlay;
        }
        .cta-content {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.75);
            max-width: 520px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .cta-btn {
            background: var(--primary);
            color: #fff;
            padding: 16px 44px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 8px 28px rgba(200,16,46,0.35);
        }
        .cta-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(200,16,46,0.5);
            color: #fff;
        }

        /* === Footer === */
        .site-footer {
            background: var(--accent);
            color: rgba(255,255,255,0.7);
            padding: 48px 24px 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .footer-brand h3 {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand h3 span {
            color: var(--primary);
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h4 {
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            max-width: 1200px;
            margin: 32px auto 0;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.1);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }

        /* === 响应式 === */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .hero h1 { font-size: 2.8rem; }
        }

        @media (max-width: 768px) {
            .mobile-toggle { display: block; }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 12px;
                border-radius: 0 0 20px 20px;
                border: 1px solid var(--border);
                box-shadow: var(--shadow);
                gap: 4px;
            }
            .nav-links.open { display: flex; }
            .nav-links li a { padding: 12px 20px; width: 100%; text-align: center; }
            .nav-cta { display: none; }
            .nav-cta-mobile {
                display: block !important;
                margin-top: 8px;
                width: 100%;
                justify-content: center;
            }

            .hero { min-height: 70vh; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1rem; }
            .hero-content { padding: 60px 20px; }

            .section { padding: 56px 0; }
            .section-title { font-size: 1.6rem; }

            .grid-3 { grid-template-columns: 1fr; }
            .grid-2 { grid-template-columns: 1fr; }
            .grid-4 { grid-template-columns: 1fr; }
            .step-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; }

            .post-item { flex-direction: column; }
            .post-thumb { width: 100%; height: 140px; }

            .cta-section { padding: 40px 24px; }
            .cta-section h2 { font-size: 1.6rem; }

            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero h1 { font-size: 1.8rem; }
            .hero-actions { flex-direction: column; }
            .hero-btn-primary, .hero-btn-secondary { width: 100%; justify-content: center; }
            .grid-2 { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr; }
            .cat-card-img { height: 160px; }
        }

/* roulang page: category1 */
:root {
            --primary: #cc0000;
            --primary-light: #ff1a1a;
            --primary-dark: #990000;
            --primary-bg: #fff5f5;
            --secondary: #1a1a2e;
            --secondary-light: #2d2d44;
            --gold: #d4a843;
            --darkgold: #b8922e;
            --soft-bg: #f8f7f4;
            --card-bg: #ffffff;
            --border-color: #e8e6e1;
            --text-color: #2d2d2d;
            --text-light: #6b6b6b;
            --radius-xl: 1rem;
            --radius-2xl: 1.5rem;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-elevated: 0 12px 40px rgba(0, 0, 0, 0.10);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            background: var(--soft-bg);
            color: var(--text-color);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        @media (max-width: 640px) {
            .container-custom {
                padding: 0 1rem;
            }
        }
        /* header */
        .site-header {
            background: var(--secondary);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 2px solid rgba(212, 168, 67, 0.25);
        }
        .nav-panel {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.35rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
        }
        .logo i {
            color: var(--gold);
            font-size: 1.5rem;
        }
        .logo span {
            color: var(--gold);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: block;
            padding: 0.5rem 1rem;
            border-radius: 2rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.8);
            transition: all 0.25s ease;
        }
        .nav-links li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-links li a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 2px 12px rgba(204, 0, 0, 0.35);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.6rem 1.3rem;
            border-radius: 2rem;
            background: var(--gold);
            color: var(--secondary);
            font-weight: 700;
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }
        .nav-cta:hover {
            background: #e0b94d;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(212, 168, 67, 0.4);
        }
        .nav-cta i {
            font-size: 0.8rem;
        }
        .nav-cta-mobile {
            display: none !important;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.25rem;
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: var(--secondary);
                flex-direction: column;
                padding: 1rem 1.5rem 1.5rem;
                gap: 0.35rem;
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                z-index: 99;
                border-bottom: 2px solid rgba(212, 168, 67, 0.15);
                box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
                pointer-events: none;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links li a {
                padding: 0.7rem 1rem;
                font-size: 1rem;
                width: 100%;
                text-align: center;
            }
            .nav-cta {
                display: none !important;
            }
            .nav-cta-mobile {
                display: flex !important;
                margin-top: 0.5rem;
                justify-content: center;
                background: var(--gold);
                color: var(--secondary);
                padding: 0.7rem 1rem;
                border-radius: 2rem;
                font-weight: 700;
                width: 100%;
            }
            .md\:hidden {
                display: block !important;
            }
        }
        @media (min-width: 769px) {
            .md\:hidden {
                display: none !important;
            }
        }
        /* footer */
        .site-footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.85);
            padding: 4rem 1.5rem 1.5rem;
        }
        .footer-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
        }
        .footer-brand h3 {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            margin: 0 0 0.75rem;
        }
        .footer-brand h3 span {
            color: var(--gold);
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 1rem;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.25s ease;
        }
        .footer-col ul li a:hover {
            color: var(--gold);
        }
        .footer-bottom {
            max-width: 1200px;
            margin: 2.5rem auto 0;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
            flex-wrap: wrap;
            gap: 0.75rem;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.75rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        /* page specific */
        .page-hero {
            background: var(--secondary);
            position: relative;
            overflow: hidden;
            padding: 5rem 0 4rem;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .page-hero .container-custom {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(212, 168, 67, 0.2);
            color: var(--gold);
            padding: 0.3rem 1rem;
            border-radius: 2rem;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            border: 1px solid rgba(212, 168, 67, 0.25);
            margin-bottom: 1.25rem;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin: 0 0 0.5rem;
            color: var(--secondary);
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 600px;
            margin-bottom: 2.5rem;
        }
        .info-card {
            background: var(--card-bg);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
            padding: 1.75rem;
            transition: all 0.35s ease;
            border: 1px solid var(--border-color);
        }
        .info-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-elevated);
        }
        .info-card .icon-circle {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: #fff;
            margin-bottom: 1rem;
        }
        .tag {
            display: inline-block;
            padding: 0.2rem 0.75rem;
            border-radius: 2rem;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--primary-bg);
            color: var(--primary);
        }
        .tag-gold {
            background: rgba(212, 168, 67, 0.12);
            color: var(--darkgold);
        }
        .tag-blue {
            background: #eef2ff;
            color: #4f46e5;
        }
        .stat-card {
            background: var(--card-bg);
            border-radius: var(--radius-xl);
            padding: 2rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-top: 0.25rem;
        }
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius-xl);
            padding: 1.5rem 1.75rem;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            transition: all 0.25s ease;
        }
        .faq-item:hover {
            border-color: var(--gold);
        }
        .faq-q {
            font-weight: 700;
            font-size: 1.05rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
            color: var(--secondary);
        }
        .faq-q i {
            color: var(--gold);
            font-size: 1.1rem;
        }
        .faq-a {
            margin-top: 0.75rem;
            padding-left: 2rem;
            color: var(--text-light);
            line-height: 1.7;
        }
        .cta-section {
            background: var(--secondary);
            border-radius: var(--radius-2xl);
            padding: 3.5rem 3rem;
            text-align: center;
            background-image: radial-gradient(circle at 20% 50%, rgba(212, 168, 67, 0.08) 0%, transparent 60%);
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin: 0 0 0.75rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            max-width: 500px;
            margin: 0 auto 1.75rem;
            font-size: 1.05rem;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.85rem 2rem;
            border-radius: 2rem;
            background: var(--gold);
            color: var(--secondary);
            font-weight: 700;
            font-size: 1rem;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: #e0b94d;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(212, 168, 67, 0.35);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.75rem 1.75rem;
            border-radius: 2rem;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            background: transparent;
        }
        .btn-outline-light:hover {
            border-color: var(--gold);
            color: var(--gold);
            transform: translateY(-2px);
        }
        .article-row {
            display: flex;
            align-items: flex-start;
            gap: 1.25rem;
            padding: 1.25rem 0;
            border-bottom: 1px solid var(--border-color);
            transition: all 0.25s ease;
        }
        .article-row:last-child {
            border-bottom: none;
        }
        .article-row:hover {
            padding-left: 0.5rem;
        }
        .article-row .thumb {
            width: 80px;
            height: 80px;
            border-radius: 0.75rem;
            object-fit: cover;
            flex-shrink: 0;
            background: var(--border-color);
        }
        .article-row .info h4 {
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 0.3rem;
            color: var(--secondary);
        }
        .article-row .info p {
            font-size: 0.85rem;
            color: var(--text-light);
            margin: 0;
            line-height: 1.5;
        }
        .article-row .info .meta {
            font-size: 0.75rem;
            color: var(--text-light);
            margin-top: 0.35rem;
            display: flex;
            gap: 1rem;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .page-hero {
                padding: 3.5rem 0 2.5rem;
            }
            .cta-section {
                padding: 2.5rem 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .stat-number {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 520px) {
            .article-row .thumb {
                width: 60px;
                height: 60px;
            }
            .article-row .info h4 {
                font-size: 0.9rem;
            }
            .faq-item {
                padding: 1.25rem 1.25rem;
            }
            .faq-q {
                font-size: 0.95rem;
            }
        }

/* roulang page: article */
:root {
            --primary: #c8102e;
            --primary-dark: #a00d25;
            --primary-light: #e8c4c9;
            --primary-bg: #fef6f7;
            --accent: #1a1a2e;
            --accent-light: #2d2d44;
            --text: #1e1e2a;
            --text-soft: #4a4a5a;
            --text-light: #8888a0;
            --border: #e8e8f0;
            --bg: #ffffff;
            --bg-alt: #f7f7fc;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
            --shadow-nav: 0 2px 20px rgba(0,0,0,0.06);
            --transition: all 0.3s cubic-bezier(0.25,0.46,0.45,0.94);
            --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.7; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; outline: none; border: none; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        @media (max-width: 640px) { .container { padding: 0 16px; } }

        /* --- header / nav --- */
        .site-header {
            position: sticky; top: 0; z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-bottom: 1px solid rgba(232,232,240,0.6);
            box-shadow: var(--shadow-nav);
        }
        .nav-panel {
            max-width: 1200px; margin: 0 auto; padding: 0 24px;
            display: flex; align-items: center; justify-content: space-between;
            height: 72px; gap: 16px;
        }
        .logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.5rem; font-weight: 700; color: var(--accent); letter-spacing: -0.3px;
            flex-shrink: 0;
        }
        .logo i { color: var(--primary); font-size: 1.4rem; }
        .logo span { color: var(--primary); font-weight: 800; }
        .nav-links {
            display: flex; align-items: center; gap: 4px;
            list-style: none; margin: 0; padding: 0;
        }
        .nav-links li a {
            display: block; padding: 8px 18px; border-radius: var(--radius-sm);
            font-size: 0.95rem; font-weight: 500; color: var(--text-soft);
            transition: var(--transition); position: relative;
        }
        .nav-links li a:hover { color: var(--primary); background: var(--primary-bg); }
        .nav-links li a.active { color: var(--primary); font-weight: 600; background: var(--primary-bg); }
        .nav-links li a.active::after {
            content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
            width: 20px; height: 3px; background: var(--primary); border-radius: 2px;
        }
        .nav-cta {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 10px 24px; border-radius: var(--radius-sm);
            background: var(--primary); color: #fff !important;
            font-weight: 600; font-size: 0.9rem;
            transition: var(--transition); flex-shrink: 0;
        }
        .nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(200,16,46,0.25); }
        .nav-cta i { font-size: 0.8rem; transition: var(--transition); }
        .nav-cta:hover i { transform: translateX(3px); }
        .nav-cta-mobile { display: none; }
        .mobile-toggle { display: none; background: none; font-size: 1.5rem; color: var(--accent); cursor: pointer; padding: 8px; }
        @media (max-width: 768px) {
            .nav-panel { height: 64px; padding: 0 16px; }
            .logo { font-size: 1.25rem; }
            .mobile-toggle { display: block; }
            .nav-links {
                position: fixed; top: 64px; left: 0; right: 0;
                background: rgba(255,255,255,0.98); backdrop-filter: blur(12px);
                flex-direction: column; padding: 16px 24px 24px;
                gap: 2px; box-shadow: 0 20px 40px rgba(0,0,0,0.08);
                transform: translateY(-120%); opacity: 0; pointer-events: none;
                transition: var(--transition); border-bottom: 2px solid var(--primary-light);
            }
            .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-links li a { padding: 12px 16px; border-radius: var(--radius-xs); font-size: 1rem; }
            .nav-links li a.active::after { display: none; }
            .nav-cta { display: none; }
            .nav-cta-mobile { display: flex !important; margin-top: 8px; justify-content: center; }
            .md\:hidden { display: block !important; }
        }
        @media (min-width: 769px) { .md\:hidden { display: none !important; } }

        /* --- hero banner --- */
        .article-hero {
            position: relative; padding: 80px 0 60px;
            background: var(--accent);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover; background-position: center;
            overflow: hidden;
        }
        .article-hero::before {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(26,26,46,0.88) 0%, rgba(26,26,46,0.70) 100%);
        }
        .article-hero .container { position: relative; z-index: 2; }
        .article-hero .breadcrumb {
            display: flex; align-items: center; gap: 8px;
            font-size: 0.85rem; color: rgba(255,255,255,0.7); margin-bottom: 20px;
        }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.7); }
        .article-hero .breadcrumb a:hover { color: #fff; }
        .article-hero .breadcrumb i { font-size: 0.6rem; color: rgba(255,255,255,0.4); }
        .article-hero h1 {
            font-size: 2.6rem; font-weight: 800; color: #fff;
            line-height: 1.2; max-width: 800px; letter-spacing: -0.5px;
        }
        .article-hero .meta {
            display: flex; flex-wrap: wrap; gap: 20px; margin-top: 20px;
            color: rgba(255,255,255,0.8); font-size: 0.9rem;
        }
        .article-hero .meta span { display: flex; align-items: center; gap: 6px; }
        .article-hero .meta i { color: var(--primary-light); }
        .article-hero .category-badge {
            display: inline-block; padding: 4px 14px; border-radius: 20px;
            background: var(--primary); color: #fff; font-size: 0.75rem; font-weight: 600;
            letter-spacing: 0.3px; margin-right: 12px;
        }
        @media (max-width: 768px) {
            .article-hero { padding: 50px 0 40px; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-hero .meta { gap: 12px; font-size: 0.8rem; }
        }

        /* --- main content --- */
        .article-main {
            padding: 50px 0 80px;
            background: var(--bg);
        }
        .article-layout {
            display: grid; grid-template-columns: 1fr 320px; gap: 50px;
        }
        .article-body {
            background: #fff; border-radius: var(--radius);
            padding: 40px 44px; box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .article-body .featured-image {
            border-radius: var(--radius-sm); overflow: hidden; margin-bottom: 32px;
        }
        .article-body .featured-image img { width: 100%; height: auto; object-fit: cover; border-radius: var(--radius-sm); }
        .article-body .content {
            font-size: 1.05rem; line-height: 1.9; color: var(--text);
        }
        .article-body .content p { margin-bottom: 1.4em; }
        .article-body .content h2 { font-size: 1.5rem; font-weight: 700; margin: 1.8em 0 0.6em; color: var(--accent); }
        .article-body .content h3 { font-size: 1.2rem; font-weight: 600; margin: 1.5em 0 0.5em; color: var(--accent); }
        .article-body .content ul, .article-body .content ol { margin: 1em 0; padding-left: 24px; }
        .article-body .content li { margin-bottom: 0.5em; }
        .article-body .content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
        .article-body .content a:hover { color: var(--primary-dark); }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary); padding: 16px 24px; margin: 1.5em 0;
            background: var(--primary-bg); border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
            color: var(--text-soft); font-style: italic;
        }
        .article-body .content img { border-radius: var(--radius-sm); margin: 1.5em 0; }
        .article-body .content .tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 1.5em 0; }
        .article-body .content .tag-list span {
            padding: 4px 14px; border-radius: 20px; background: var(--primary-bg);
            color: var(--primary); font-size: 0.8rem; font-weight: 500;
        }
        .article-body .content table { width: 100%; border-collapse: collapse; margin: 1.5em 0; }
        .article-body .content th, .article-body .content td {
            padding: 12px 16px; border: 1px solid var(--border); text-align: left;
        }
        .article-body .content th { background: var(--bg-alt); font-weight: 600; }
        .article-footer-bar {
            margin-top: 36px; padding-top: 24px;
            border-top: 1px solid var(--border);
            display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px;
        }
        .article-footer-bar .share { display: flex; align-items: center; gap: 12px; }
        .article-footer-bar .share a {
            display: flex; align-items: center; justify-content: center;
            width: 38px; height: 38px; border-radius: 50%;
            background: var(--bg-alt); color: var(--text-soft);
            transition: var(--transition); font-size: 1rem;
        }
        .article-footer-bar .share a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .article-footer-bar .back-home {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 10px 20px; border-radius: var(--radius-sm);
            background: var(--bg-alt); color: var(--text-soft); font-weight: 500;
            transition: var(--transition);
        }
        .article-footer-bar .back-home:hover { background: var(--primary-bg); color: var(--primary); }
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; gap: 40px; }
        }
        @media (max-width: 768px) {
            .article-body { padding: 24px 20px; }
            .article-body .content { font-size: 0.95rem; }
            .article-footer-bar { flex-direction: column; align-items: flex-start; }
        }

        /* --- sidebar --- */
        .article-sidebar {
            display: flex; flex-direction: column; gap: 32px;
        }
        .sidebar-card {
            background: #fff; border-radius: var(--radius); padding: 28px;
            box-shadow: var(--shadow); border: 1px solid var(--border);
        }
        .sidebar-card h3 {
            font-size: 1.1rem; font-weight: 700; color: var(--accent);
            margin-bottom: 16px; padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-light);
            display: flex; align-items: center; gap: 8px;
        }
        .sidebar-card h3 i { color: var(--primary); }
        .sidebar-list { list-style: none; padding: 0; margin: 0; }
        .sidebar-list li { padding: 10px 0; border-bottom: 1px solid var(--border); }
        .sidebar-list li:last-child { border-bottom: none; }
        .sidebar-list li a {
            display: flex; justify-content: space-between; align-items: center;
            font-size: 0.9rem; color: var(--text-soft); transition: var(--transition);
        }
        .sidebar-list li a:hover { color: var(--primary); padding-left: 4px; }
        .sidebar-list li a span { font-size: 0.75rem; color: var(--text-light); background: var(--bg-alt); padding: 2px 10px; border-radius: 12px; }
        .sidebar-cta {
            display: block; text-align: center; padding: 16px 0;
            border-radius: var(--radius-sm); background: var(--primary); color: #fff;
            font-weight: 600; transition: var(--transition);
        }
        .sidebar-cta:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(200,16,46,0.2); }
        .sidebar-tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
        .sidebar-tag-cloud a {
            padding: 6px 16px; border-radius: 20px; background: var(--bg-alt);
            color: var(--text-soft); font-size: 0.8rem; font-weight: 500;
            transition: var(--transition);
        }
        .sidebar-tag-cloud a:hover { background: var(--primary); color: #fff; }
        @media (max-width: 1024px) {
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
        }
        @media (max-width: 640px) { .article-sidebar { grid-template-columns: 1fr; } }

        /* --- related posts --- */
        .related-section {
            padding: 60px 0; background: var(--bg-alt);
        }
        .related-section h2 {
            font-size: 1.8rem; font-weight: 700; color: var(--accent);
            margin-bottom: 32px; text-align: center;
        }
        .related-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
        }
        .related-card {
            background: #fff; border-radius: var(--radius); overflow: hidden;
            box-shadow: var(--shadow); border: 1px solid var(--border);
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .related-card img { width: 100%; height: 200px; object-fit: cover; }
        .related-card .card-body { padding: 20px; }
        .related-card .card-body h3 { font-size: 1rem; font-weight: 600; margin-bottom: 8px; }
        .related-card .card-body h3 a { color: var(--accent); }
        .related-card .card-body h3 a:hover { color: var(--primary); }
        .related-card .card-body p { font-size: 0.85rem; color: var(--text-soft); line-height: 1.6; }
        .related-card .card-body .meta { font-size: 0.75rem; color: var(--text-light); margin-top: 12px; display: flex; gap: 12px; }
        @media (max-width: 768px) {
            .related-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 520px) { .related-grid { grid-template-columns: 1fr; } }

        /* --- footer --- */
        .site-footer {
            background: var(--accent); color: rgba(255,255,255,0.85);
            padding: 60px 24px 0;
        }
        .footer-grid {
            max-width: 1200px; margin: 0 auto;
            display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px;
            padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand h3 { font-size: 1.4rem; font-weight: 700; color: #fff; margin-bottom: 12px; }
        .footer-brand h3 span { color: var(--primary-light); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.65); max-width: 340px; }
        .footer-col h4 { font-size: 0.95rem; font-weight: 600; color: #fff; margin-bottom: 16px; }
        .footer-col ul { list-style: none; padding: 0; margin: 0; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { font-size: 0.85rem; color: rgba(255,255,255,0.6); transition: var(--transition); }
        .footer-col ul li a:hover { color: #fff; padding-left: 4px; }
        .footer-bottom {
            max-width: 1200px; margin: 0 auto;
            display: flex; justify-content: space-between; align-items: center;
            padding: 20px 0; font-size: 0.8rem; color: rgba(255,255,255,0.4);
            flex-wrap: wrap; gap: 8px;
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }

        /* --- not found --- */
        .not-found-box {
            text-align: center; padding: 60px 20px;
        }
        .not-found-box i { font-size: 3rem; color: var(--text-light); margin-bottom: 20px; }
        .not-found-box h2 { font-size: 1.6rem; color: var(--accent); margin-bottom: 12px; }
        .not-found-box p { color: var(--text-soft); margin-bottom: 24px; }
        .not-found-box a {
            display: inline-block; padding: 12px 32px; border-radius: var(--radius-sm);
            background: var(--primary); color: #fff; font-weight: 600;
        }
        .not-found-box a:hover { background: var(--primary-dark); }

/* roulang page: category2 */
:root {
            --primary: #cc1f1f;
            --primary-light: #e53935;
            --primary-dark: #a51515;
            --primary-subtle: #fef2f2;
            --accent: #1a1a2e;
            --accent-light: #2d2d4e;
            --accent-soft: #f0f0f5;
            --bg-body: #fafafa;
            --text-body: #2d3436;
            --text-muted: #636e72;
            --border-light: #e8e8ec;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.10);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --max-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            color: var(--text-body);
            background: var(--bg-body);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input {
            font: inherit;
            outline: none;
        }

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

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

        .nav-panel {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--accent);
            flex-shrink: 0;
        }

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

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            flex: 1;
            justify-content: center;
        }

        .nav-links li a {
            padding: 10px 20px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            white-space: nowrap;
        }

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

        .nav-links li a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(204, 31, 31, 0.30);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 40px;
            background: var(--accent);
            color: #fff !important;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .nav-cta i {
            font-size: 0.85rem;
            transition: transform 0.3s;
        }

        .nav-cta:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 26, 46, 0.25);
        }

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

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--accent);
            cursor: pointer;
            padding: 6px;
            border-radius: 8px;
            transition: var(--transition);
        }

        .mobile-toggle:hover {
            background: var(--accent-soft);
        }

        .nav-cta-mobile {
            display: none !important;
        }

        /* Footer */
        .site-footer {
            background: var(--accent);
            color: #d0d0e0;
            padding: 60px 24px 30px;
        }

        .footer-grid {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
        }

        .footer-brand h3 {
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand h3 span {
            color: var(--primary-light);
        }

        .footer-brand p {
            font-size: 0.95rem;
            line-height: 1.7;
            color: #a0a0b8;
            max-width: 360px;
        }

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

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            color: #a0a0b8;
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            max-width: var(--max-width);
            margin: 40px auto 0;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: #707088;
        }

        /* Page Banner */
        .page-banner {
            background: linear-gradient(135deg, var(--accent) 0%, #2d2d4e 100%);
            padding: 80px 24px 60px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }

        .page-banner .container {
            position: relative;
            z-index: 1;
        }

        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .page-banner p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.80);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.60);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.70);
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb span {
            color: rgba(255, 255, 255, 0.40);
        }

        /* Section */
        .section-pad {
            padding: 80px 24px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 48px;
            line-height: 1.7;
        }

        /* Cards Grid */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 24px;
        }

        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .nav-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .nav-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }

        .nav-card .icon-box {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: var(--primary-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 18px;
            transition: var(--transition);
        }

        .nav-card:hover .icon-box {
            background: var(--primary);
            color: #fff;
        }

        .nav-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 8px;
        }

        .nav-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
        }

        .nav-card .card-link {
            margin-top: 16px;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
        }

        .nav-card .card-link i {
            transition: transform 0.3s;
        }

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

        /* Step List */
        .step-list {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 20px;
            counter-reset: step;
        }

        .step-item {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            position: relative;
            transition: var(--transition);
        }

        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .step-item::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary-subtle);
            line-height: 1;
            transition: var(--transition);
        }

        .step-item:hover::before {
            color: rgba(204, 31, 31, 0.12);
        }

        .step-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }

        .step-item p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
            position: relative;
            z-index: 1;
        }

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

        .faq-item {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--accent);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }

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

        .faq-question i {
            transition: transform 0.3s;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* CTA Banner */
        .cta-banner {
            background: linear-gradient(135deg, var(--primary) 0%, #b71c1c 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

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

        .cta-banner .cta-content {
            position: relative;
            z-index: 1;
        }

        .cta-banner h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-banner p {
            font-size: 1.1rem;
            opacity: 0.90;
            margin-bottom: 28px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-banner .btn-white {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 40px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
        }

        .cta-banner .btn-white:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
        }

        .cta-banner .btn-white i {
            transition: transform 0.3s;
        }

        .cta-banner .btn-white:hover i {
            transform: translateX(4px);
        }

        /* Tip Box */
        .tip-box {
            background: var(--primary-subtle);
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            padding: 20px 24px;
            margin-top: 24px;
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }

        .tip-box i {
            font-size: 1.3rem;
            color: var(--primary);
            flex-shrink: 0;
            margin-top: 2px;
        }

        .tip-box p {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
        }

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

            .step-list {
                grid-template-columns: 1fr 1fr;
            }

            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-panel {
                height: 64px;
                padding: 0 16px;
            }

            .mobile-toggle {
                display: block;
            }

            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 20px 24px;
                gap: 6px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.10);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
                border-bottom: 1px solid var(--border-light);
                z-index: 99;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                justify-content: flex-start;
            }

            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
            }

            .nav-links li a {
                padding: 12px 20px;
                width: 100%;
                border-radius: var(--radius-sm);
            }

            .nav-links .nav-cta-mobile {
                display: flex !important;
                margin-top: 8px;
                background: var(--primary);
                color: #fff;
                justify-content: center;
                border-radius: 40px;
                padding: 12px 24px;
            }

            .nav-cta:not(.nav-cta-mobile) {
                display: none !important;
            }

            .page-banner {
                padding: 60px 16px 48px;
            }

            .page-banner h1 {
                font-size: 2rem;
            }

            .page-banner p {
                font-size: 1rem;
            }

            .section-pad {
                padding: 48px 16px;
            }

            .section-title {
                font-size: 1.6rem;
            }

            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .step-list {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }

            .cta-banner {
                padding: 40px 24px;
            }

            .cta-banner h2 {
                font-size: 1.5rem;
            }

            .cta-banner p {
                font-size: 0.95rem;
            }

            .cta-banner .btn-white {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            .logo {
                font-size: 1.2rem;
            }

            .page-banner h1 {
                font-size: 1.6rem;
            }

            .nav-card {
                padding: 24px 20px;
            }

            .step-item {
                padding: 20px 18px;
            }

            .faq-question {
                padding: 14px 16px;
                font-size: 0.95rem;
            }

            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.9rem;
            }
        }