/* roulang page: index */
:root {
            --primary: #0f172a;
            --primary-light: #1e293b;
            --secondary: #f97316;
            --secondary-dark: #ea580c;
            --accent: #06b6d4;
            --bg: #f8fafc;
            --card-bg: #ffffff;
            --text: #0f172a;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
        }
        .nav-left {
            justify-content: flex-start;
        }
        .nav-right {
            justify-content: flex-end;
        }
        .nav-link {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-weak);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--secondary);
            background: rgba(249, 115, 22, 0.08);
        }
        .nav-link.active {
            color: var(--secondary);
            background: rgba(249, 115, 22, 0.12);
            font-weight: 600;
        }
        .logo-wrap {
            flex-shrink: 0;
            text-align: center;
            padding: 0 12px;
        }
        .logo-text {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--primary);
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }
        .logo-sub {
            display: block;
            font-size: 0.6rem;
            font-weight: 400;
            letter-spacing: 0.3em;
            color: var(--text-weak);
            -webkit-text-fill-color: var(--text-weak);
            background: none;
            margin-top: -2px;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .hamburger:hover {
            background: rgba(0, 0, 0, 0.05);
        }
        .mobile-menu {
            display: none;
            padding: 12px 16px 20px;
            background: var(--card-bg);
            border-top: 1px solid var(--border);
        }
        .mobile-menu .nav-link {
            display: block;
            padding: 12px 16px;
            border-radius: 12px;
            font-size: 1.05rem;
        }
        .mobile-menu .nav-link+.nav-link {
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .header-inner {
                height: 64px;
            }
            .logo-text {
                font-size: 1.25rem;
            }
            .mobile-menu.open {
                display: block;
            }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.85), rgba(30, 41, 59, 0.75)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            padding: 60px 24px;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(249, 115, 22, 0.15), transparent 70%);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            background: rgba(249, 115, 22, 0.2);
            border: 1px solid rgba(249, 115, 22, 0.3);
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.05em;
            color: #fbd38d;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: 3.8rem;
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .hero-title span {
            background: linear-gradient(135deg, #f97316, #fbbf24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: #fff;
            box-shadow: 0 4px 20px rgba(249, 115, 22, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(249, 115, 22, 0.45);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 12px rgba(249, 115, 22, 0.3);
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(4px);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.22);
            border-color: rgba(255, 255, 255, 0.4);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-sm {
            padding: 10px 22px;
            font-size: 0.9rem;
        }
        .btn-outline {
            background: transparent;
            color: var(--secondary);
            border: 2px solid var(--secondary);
        }
        .btn-outline:hover {
            background: var(--secondary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(249, 115, 22, 0.25);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 40px;
            margin-top: 48px;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
        }
        .hero-stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .hero {
                min-height: 70vh;
                padding: 40px 16px;
            }
            .hero-title {
                font-size: 2.4rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
                padding-top: 28px;
                margin-top: 32px;
            }
            .hero-stat-num {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
        }

        /* ===== Section ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--card-bg);
        }
        .section-dark {
            background: var(--primary);
            color: #fff;
        }
        .section-sm {
            padding: 56px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-label {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(249, 115, 22, 0.1);
            color: var(--secondary);
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 2.4rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 12px;
        }
        .section-title span {
            color: var(--secondary);
        }
        .section-desc {
            font-size: 1.1rem;
            color: var(--text-weak);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-dark .section-desc {
            color: rgba(255, 255, 255, 0.65);
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .section-desc {
                font-size: 1rem;
            }
            .section-header {
                margin-bottom: 36px;
            }
        }

        /* ===== Cards ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .card-grid-2 {
            grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
        }
        .card-grid-4 {
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        }
        .card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--border);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-image {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 20px 24px 24px;
        }
        .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(6, 182, 212, 0.1);
            color: var(--accent);
            margin-bottom: 8px;
        }
        .card-tag.orange {
            background: rgba(249, 115, 22, 0.1);
            color: var(--secondary);
        }
        .card-tag.purple {
            background: rgba(139, 92, 246, 0.1);
            color: #8b5cf6;
        }
        .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-text {
            font-size: 0.95rem;
            color: var(--text-weak);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 14px;
            font-size: 0.85rem;
            color: var(--text-weak);
        }
        .card-link {
            color: var(--secondary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 12px;
            transition: gap var(--transition);
        }
        .card-link:hover {
            gap: 10px;
        }
        @media (max-width: 520px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
            .card-grid-2 {
                grid-template-columns: 1fr;
            }
            .card-grid-4 {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* ===== Features ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 28px;
        }
        .feature-card {
            text-align: center;
            padding: 36px 20px 28px;
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.8rem;
            color: #fff;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
        }
        .feature-icon.blue {
            background: linear-gradient(135deg, #06b6d4, #0891b2);
        }
        .feature-icon.purple {
            background: linear-gradient(135deg, #8b5cf6, #7c3aed);
        }
        .feature-icon.green {
            background: linear-gradient(135deg, #10b981, #059669);
        }
        .feature-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .feature-text {
            font-size: 0.95rem;
            color: var(--text-weak);
            line-height: 1.6;
        }

        /* ===== Category cards ===== */
        .cat-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            aspect-ratio: 4/3;
            display: flex;
            align-items: flex-end;
            padding: 24px;
            color: #fff;
            transition: all var(--transition);
            cursor: pointer;
        }
        .cat-card:hover {
            transform: scale(1.02);
            box-shadow: var(--shadow-lg);
        }
        .cat-card-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            transition: transform 0.5s ease;
        }
        .cat-card:hover .cat-card-bg {
            transform: scale(1.08);
        }
        .cat-card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.75) 0%, rgba(0, 0, 0, 0.15) 70%);
        }
        .cat-card-content {
            position: relative;
            z-index: 2;
        }
        .cat-card-title {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .cat-card-desc {
            font-size: 0.9rem;
            opacity: 0.85;
            line-height: 1.5;
        }
        .cat-card .btn {
            margin-top: 12px;
        }

        /* ===== Timeline / Process ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 32px;
            counter-reset: step;
        }
        .process-step {
            text-align: center;
            padding: 32px 16px;
            position: relative;
            counter-increment: step;
        }
        .process-step::before {
            content: counter(step);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--secondary);
            color: #fff;
            font-size: 1.3rem;
            font-weight: 800;
            margin: 0 auto 16px;
        }
        .process-step-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .process-step-text {
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.6;
        }
        .process-step+.process-step::after {
            content: '→';
            position: absolute;
            left: -20px;
            top: 48px;
            font-size: 1.6rem;
            color: var(--secondary);
            opacity: 0.4;
            font-weight: 300;
        }
        @media (max-width: 768px) {
            .process-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .process-step+.process-step::after {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .process-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 18px 24px;
            font-size: 1.05rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            gap: 16px;
            user-select: none;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: rgba(0, 0, 0, 0.02);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 1.2rem;
            color: var(--secondary);
            transition: transform var(--transition);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-weak);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        @media (max-width: 520px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.9rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), #1a2a6c), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            background-blend-mode: overlay;
            color: #fff;
            text-align: center;
            padding: 80px 24px;
            border-radius: var(--radius-lg);
            margin: 0 24px;
        }
        .cta-section .section-title {
            color: #fff;
        }
        .cta-section .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 56px 20px;
                margin: 0 16px;
                border-radius: var(--radius-md);
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-text {
            font-size: 1.4rem;
            display: inline-block;
            margin-bottom: 8px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col-title {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.5);
            transition: all var(--transition);
            font-size: 1rem;
        }
        .footer-social a:hover {
            background: var(--secondary);
            color: #fff;
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Utility ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--secondary), #fbbf24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .gap-2 {
            gap: 8px;
        }
        .gap-4 {
            gap: 16px;
        }
        .mt-8 {
            margin-top: 32px;
        }
        .mb-8 {
            margin-bottom: 32px;
        }
        .text-center {
            text-align: center;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

        /* ===== Posts list ===== */
        .post-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            align-items: flex-start;
        }
        .post-item:last-child {
            border-bottom: none;
        }
        .post-thumb {
            width: 120px;
            height: 80px;
            border-radius: 10px;
            object-fit: cover;
            flex-shrink: 0;
            background: #e2e8f0;
        }
        .post-info {
            flex: 1;
            min-width: 0;
        }
        .post-title {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-title a {
            color: var(--text);
            transition: color var(--transition);
        }
        .post-title a:hover {
            color: var(--secondary);
        }
        .post-excerpt {
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 6px;
        }
        .post-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-weak);
        }
        .post-meta .category {
            color: var(--secondary);
            font-weight: 600;
        }
        @media (max-width: 520px) {
            .post-item {
                flex-direction: column;
                gap: 12px;
            }
            .post-thumb {
                width: 100%;
                height: 160px;
            }
        }

        /* ===== Empty state ===== */
        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-weak);
            font-size: 1rem;
            background: rgba(0, 0, 0, 0.02);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border);
        }
        .empty-state i {
            font-size: 2.4rem;
            color: var(--border);
            margin-bottom: 12px;
            display: block;
        }

        /* ===== Focus visible ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Scroll animation helper ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --accent-glow: rgba(244, 162, 97, 0.3);
            --bg-dark: #0b0f1a;
            --bg-dark2: #111827;
            --bg-card: #1a1f2e;
            --bg-card-hover: #232a3d;
            --bg-surface: #1e2538;
            --text-light: #f1f5f9;
            --text-muted: #94a3b8;
            --text-soft: #cbd5e1;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-light: rgba(255, 255, 255, 0.15);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(230, 57, 70, 0.15);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-light);
        }
        p {
            color: var(--text-muted);
            margin-bottom: 0.75rem;
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(11, 15, 26, 0.92);
            backdrop-filter: blur(18px) saturate(1.3);
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(11, 15, 26, 0.98);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
            gap: 16px;
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-left .nav-link,
        .nav-right .nav-link {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-soft);
            transition: background var(--transition), color var(--transition);
            letter-spacing: 0.3px;
            position: relative;
        }
        .nav-left .nav-link:hover,
        .nav-right .nav-link:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-left .nav-link.active,
        .nav-right .nav-link.active {
            color: var(--primary-light);
            background: rgba(230, 57, 70, 0.12);
        }
        .nav-left .nav-link.active::after,
        .nav-right .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 4px;
            background: var(--primary);
        }
        .logo-wrap {
            display: flex;
            flex-direction: column;
            align-items: center;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 1.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: 0.5px;
            line-height: 1.2;
        }
        .logo-sub {
            font-size: 0.6rem;
            font-weight: 600;
            letter-spacing: 3px;
            color: var(--text-muted);
            text-transform: uppercase;
            margin-top: -2px;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text-light);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            background: var(--bg-dark2);
            border-top: 1px solid var(--border-color);
            padding: 12px 24px 20px;
            gap: 6px;
            position: absolute;
            top: var(--header-h);
            left: 0;
            right: 0;
            box-shadow: var(--shadow-lg);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-link {
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-soft);
            transition: background var(--transition), color var(--transition);
        }
        .mobile-menu .nav-link:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-light);
        }
        .mobile-menu .nav-link.active {
            color: var(--primary-light);
            background: rgba(230, 57, 70, 0.12);
        }

        @media (max-width: 768px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .logo-text {
                font-size: 1.25rem;
            }
        }
        @media (min-width: 769px) {
            .mobile-menu {
                display: none !important;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            padding-top: calc(var(--header-h) + 24px);
            padding-bottom: 12px;
            background: var(--bg-dark);
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb-wrap .container {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .breadcrumb-wrap a {
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .breadcrumb-wrap a:hover {
            color: var(--primary-light);
        }
        .breadcrumb-wrap .sep {
            color: var(--border-light);
            font-size: 0.7rem;
        }
        .breadcrumb-wrap .current {
            color: var(--text-soft);
            font-weight: 500;
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 60px 0 80px;
            background: var(--bg-dark2);
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.25;
            mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), transparent 90%);
            -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), transparent 90%);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff 40%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-banner p {
            font-size: 1.15rem;
            color: var(--text-soft);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .banner-stats {
            display: flex;
            justify-content: center;
            gap: 40px 60px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .banner-stat-item {
            text-align: center;
        }
        .banner-stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-light);
            display: block;
        }
        .banner-stat-item .label {
            font-size: 0.85rem;
            color: var(--text-muted);
            letter-spacing: 0.5px;
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 40px 0 50px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner p {
                font-size: 0.95rem;
            }
            .banner-stats {
                gap: 20px 30px;
            }
            .banner-stat-item .num {
                font-size: 1.5rem;
            }
        }

        /* ===== Section Common ===== */
        .section {
            padding: 70px 0;
        }
        .section-heading {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-heading h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .section-heading p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto;
        }
        .section-heading .badge-title {
            display: inline-block;
            background: rgba(230, 57, 70, 0.15);
            color: var(--primary-light);
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            border: 1px solid rgba(230, 57, 70, 0.2);
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-heading h2 {
                font-size: 1.6rem;
            }
            .section-heading p {
                font-size: 0.95rem;
            }
        }

        /* ===== Filter / Tab Bar ===== */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 40px;
        }
        .filter-btn {
            padding: 8px 22px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
            background: var(--bg-card);
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            cursor: pointer;
            transition: all var(--transition);
        }
        .filter-btn:hover {
            background: var(--bg-card-hover);
            color: var(--text-soft);
            border-color: var(--border-light);
        }
        .filter-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }

        /* ===== Event Card ===== */
        .event-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .event-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-md), var(--shadow-glow);
            background: var(--bg-card-hover);
        }
        .event-card .card-img {
            position: relative;
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-dark2);
        }
        .event-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .event-card:hover .card-img img {
            transform: scale(1.05);
        }
        .event-card .card-img .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            box-shadow: 0 2px 10px rgba(230, 57, 70, 0.4);
        }
        .event-card .card-img .card-badge.outline {
            background: rgba(0, 0, 0, 0.55);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            box-shadow: none;
        }
        .event-card .card-img .live-tag {
            position: absolute;
            top: 12px;
            right: 12px;
            background: rgba(230, 57, 70, 0.9);
            color: #fff;
            padding: 4px 12px;
            border-radius: 40px;
            font-size: 0.65rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 6px;
            animation: pulse-live 1.8s infinite;
        }
        .event-card .card-img .live-tag i {
            font-size: 0.5rem;
        }
        @keyframes pulse-live {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.7;
                transform: scale(0.96);
            }
        }
        .event-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .event-card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .event-card .card-body .card-meta i {
            margin-right: 4px;
            font-size: 0.65rem;
        }
        .event-card .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-light);
            line-height: 1.3;
        }
        .event-card .card-body h3 a {
            color: inherit;
            transition: color var(--transition);
        }
        .event-card .card-body h3 a:hover {
            color: var(--primary-light);
        }
        .event-card .card-body .card-excerpt {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }
        .event-card .card-body .card-footer-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
            margin-top: auto;
        }
        .event-card .card-body .card-footer-row .tag-group {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .event-card .card-body .card-footer-row .tag {
            font-size: 0.65rem;
            padding: 2px 12px;
            border-radius: 40px;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            font-weight: 500;
        }
        .event-card .card-body .card-footer-row .tag.hot {
            color: var(--accent);
            border-color: rgba(244, 162, 97, 0.3);
            background: rgba(244, 162, 97, 0.08);
        }
        .event-card .card-body .card-footer-row .read-link {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary-light);
            display: flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }
        .event-card .card-body .card-footer-row .read-link:hover {
            gap: 12px;
            color: var(--accent);
        }

        @media (max-width: 768px) {
            .event-card .card-body {
                padding: 16px 18px 18px;
            }
            .event-card .card-body h3 {
                font-size: 1rem;
            }
        }

        /* ===== Featured Event (large) ===== */
        .featured-event {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            margin-bottom: 48px;
            transition: all var(--transition);
        }
        .featured-event:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-md);
        }
        .featured-event .feat-img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
            background: var(--bg-dark2);
        }
        .featured-event .feat-body {
            padding: 32px 36px 36px 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-event .feat-body .feat-label {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            width: fit-content;
        }
        .featured-event .feat-body h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .featured-event .feat-body p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .featured-event .feat-body .btn-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        @media (max-width: 768px) {
            .featured-event {
                grid-template-columns: 1fr;
                gap: 0;
            }
            .featured-event .feat-img {
                aspect-ratio: 16/9;
            }
            .featured-event .feat-body {
                padding: 24px 20px 28px;
            }
            .featured-event .feat-body h2 {
                font-size: 1.4rem;
            }
        }

        /* ===== Button ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 30px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            line-height: 1.2;
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(230, 57, 70, 0.4);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--text-soft);
            border: 1.5px solid var(--border-light);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--text-muted);
            color: var(--text-light);
            transform: translateY(-2px);
        }
        .btn-secondary {
            background: var(--secondary);
            color: #fff;
        }
        .btn-secondary:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.8rem;
        }
        .btn i {
            font-size: 0.85rem;
        }

        /* ===== Stats / Data Section ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin: 48px 0 16px;
        }
        .stat-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .stat-card:hover {
            border-color: var(--border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-sm);
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--primary-light);
            margin-bottom: 10px;
        }
        .stat-card .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card {
                padding: 20px 16px;
            }
            .stat-card .stat-num {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* ===== Schedule / Timeline ===== */
        .schedule-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .schedule-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 18px 24px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .schedule-item:hover {
            border-color: var(--border-light);
            background: var(--bg-card-hover);
            transform: translateX(4px);
        }
        .schedule-item .s-time {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-muted);
            min-width: 60px;
            flex-shrink: 0;
        }
        .schedule-item .s-info {
            flex: 1;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 20px;
        }
        .schedule-item .s-info .s-league {
            font-size: 0.7rem;
            color: var(--text-muted);
            padding: 2px 12px;
            border-radius: 40px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
        }
        .schedule-item .s-info .s-match {
            font-weight: 600;
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .schedule-item .s-info .s-match span {
            color: var(--text-muted);
            font-weight: 400;
            margin: 0 6px;
        }
        .schedule-item .s-status {
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 40px;
            flex-shrink: 0;
        }
        .schedule-item .s-status.upcoming {
            background: rgba(69, 123, 157, 0.15);
            color: var(--secondary-light);
            border: 1px solid rgba(69, 123, 157, 0.25);
        }
        .schedule-item .s-status.live {
            background: rgba(230, 57, 70, 0.15);
            color: var(--primary-light);
            border: 1px solid rgba(230, 57, 70, 0.25);
            animation: pulse-live 1.8s infinite;
        }
        .schedule-item .s-status.finished {
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-muted);
            border: 1px solid var(--border-color);
        }
        @media (max-width: 640px) {
            .schedule-item {
                flex-wrap: wrap;
                padding: 14px 16px;
                gap: 10px;
            }
            .schedule-item .s-time {
                min-width: 48px;
                font-size: 0.75rem;
            }
            .schedule-item .s-info .s-match {
                font-size: 0.85rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-item summary {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-light);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: color var(--transition);
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.75rem;
            color: var(--text-muted);
            transition: transform 0.3s ease;
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item summary:hover {
            color: var(--primary-light);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        @media (max-width: 640px) {
            .faq-item summary {
                padding: 16px 18px;
                font-size: 0.92rem;
            }
            .faq-item .faq-answer {
                padding: 0 18px 16px;
                font-size: 0.85rem;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark2);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.1;
            mask-image: linear-gradient(to right, transparent, rgba(0, 0, 0, 0.5), transparent);
            -webkit-mask-image: linear-gradient(to right, transparent, rgba(0, 0, 0, 0.5), transparent);
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 540px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark2);
            border-top: 1px solid var(--border-color);
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 40px;
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-top: 8px;
        }
        .footer-col-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: color var(--transition), padding-left var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .footer-links a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-links a i {
            font-size: 0.75rem;
            width: 16px;
            text-align: center;
            color: var(--text-muted);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            font-size: 0.9rem;
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px 20px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .w-full {
            width: 100%;
        }

        /* ===== Responsive fine-tune ===== */
        @media (max-width: 1024px) {
            .container {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.7rem;
            }
            .section-heading h2 {
                font-size: 1.4rem;
            }
            .btn {
                padding: 10px 22px;
                font-size: 0.82rem;
            }
            .filter-bar {
                gap: 6px;
            }
            .filter-btn {
                padding: 6px 16px;
                font-size: 0.75rem;
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-light);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

        /* ===== Focus visible ===== */
        :focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
    --primary: #E84D3D;
    --primary-dark: #C0392B;
    --primary-light: #F26B5E;
    --accent: #F5A623;
    --accent-dark: #D4891A;
    --bg-dark: #0F0F1A;
    --bg-card: #1A1A2E;
    --bg-card-hover: #222244;
    --bg-section: #12122A;
    --bg-soft: #1E1E3A;
    --text-white: #FFFFFF;
    --text-main: rgba(255,255,255,0.92);
    --text-secondary: rgba(255,255,255,0.7);
    --text-muted: rgba(255,255,255,0.5);
    --border-light: rgba(255,255,255,0.08);
    --border-hover: rgba(255,255,255,0.18);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.25);
    --shadow-md: 0 6px 24px rgba(0,0,0,0.35);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.45);
    --shadow-primary: 0 4px 20px rgba(232,77,61,0.35);
    --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --container: 1200px;
    --header-h: 72px;
}
/* ===== Reset / Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-sans);background:var(--bg-dark);color:var(--text-main);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary-light);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--accent)}
button,input,textarea{font-family:inherit;font-size:inherit;outline:none;border:none}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{line-height:1.3;font-weight:700;color:var(--text-white)}
h1{font-size:clamp(1.8rem,4.5vw,3.2rem)}
h2{font-size:clamp(1.4rem,3.2vw,2.2rem)}
h3{font-size:clamp(1.1rem,2.2vw,1.5rem)}
h4{font-size:1.1rem}
p{margin-bottom:1rem;color:var(--text-secondary)}
/* ===== 容器 ===== */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
/* ===== 导航 ===== */
.site-header{position:fixed;top:0;left:0;width:100%;height:var(--header-h);background:rgba(15,15,26,0.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border-light);z-index:1000;transition:var(--transition)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);position:relative}
.nav-left,.nav-right{display:flex;align-items:center;gap:24px}
.nav-left .nav-link,.nav-right .nav-link{color:var(--text-secondary);font-size:0.95rem;font-weight:500;padding:6px 0;position:relative;transition:var(--transition);letter-spacing:0.3px}
.nav-left .nav-link::after,.nav-right .nav-link::after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:2px;background:var(--primary);transition:var(--transition);border-radius:2px}
.nav-left .nav-link:hover,.nav-right .nav-link:hover{color:var(--text-white)}
.nav-left .nav-link:hover::after,.nav-right .nav-link:hover::after{width:100%}
.nav-left .nav-link.active,.nav-right .nav-link.active{color:var(--primary-light)}
.nav-left .nav-link.active::after,.nav-right .nav-link.active::after{width:100%;background:var(--primary-light)}
.logo-wrap{display:flex;flex-direction:column;align-items:center;justify-content:center;position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);text-align:center}
.logo-text{font-size:1.5rem;font-weight:800;color:var(--text-white);letter-spacing:0.5px;transition:var(--transition);line-height:1.2}
.logo-text:hover{color:var(--primary-light)}
.logo-sub{font-size:0.65rem;color:var(--text-muted);letter-spacing:2px;text-transform:uppercase;margin-top:1px;display:block}
.hamburger{display:none;background:none;color:var(--text-white);font-size:1.5rem;cursor:pointer;padding:8px;border-radius:var(--radius-sm);transition:var(--transition);position:absolute;right:0;top:50%;transform:translateY(-50%)}
.hamburger:hover{background:var(--bg-card);color:var(--primary-light)}
.mobile-menu{display:none;position:fixed;top:var(--header-h);left:0;width:100%;background:rgba(15,15,26,0.98);backdrop-filter:blur(20px);padding:16px 20px 24px;border-bottom:1px solid var(--border-light);z-index:999;flex-direction:column;gap:12px}
.mobile-menu .nav-link{color:var(--text-secondary);font-size:1.05rem;font-weight:500;padding:10px 0;border-bottom:1px solid var(--border-light);transition:var(--transition);display:block}
.mobile-menu .nav-link:hover,.mobile-menu .nav-link.active{color:var(--primary-light);border-color:var(--primary-light)}
/* ===== 文章 Banner ===== */
.article-banner{position:relative;padding:140px 0 60px;background:linear-gradient(135deg,#0F0F1A 0%,#1A1A2E 50%,#0F0F1A 100%);overflow:hidden;margin-top:0}
.article-banner::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:0.18;z-index:0}
.article-banner::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,15,26,0.88) 0%,rgba(15,15,26,0.5) 50%,rgba(15,15,26,0.92) 100%);z-index:1}
.article-banner .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:20px;font-size:0.85rem;color:var(--text-muted)}
.breadcrumb a{color:var(--text-muted);transition:var(--transition)}
.breadcrumb a:hover{color:var(--primary-light)}
.breadcrumb .sep{color:var(--text-muted);font-size:0.7rem}
.breadcrumb .current{color:var(--text-secondary)}
.article-banner .post-category{display:inline-block;background:var(--primary);color:#fff;font-size:0.75rem;font-weight:600;padding:4px 14px;border-radius:20px;letter-spacing:0.5px;margin-bottom:16px;text-transform:uppercase}
.article-banner h1{font-size:clamp(1.5rem,4vw,2.8rem);font-weight:800;line-height:1.25;margin-bottom:16px;max-width:900px;color:var(--text-white)}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:16px;font-size:0.9rem;color:var(--text-muted)}
.article-meta .meta-item{display:flex;align-items:center;gap:6px}
.article-meta .meta-item i{font-size:0.85rem;color:var(--primary-light)}
.article-meta .badge-hot{background:rgba(245,166,35,0.2);color:var(--accent);font-size:0.7rem;font-weight:600;padding:2px 12px;border-radius:20px;border:1px solid rgba(245,166,35,0.3)}
/* ===== 文章正文 ===== */
.article-main{padding:48px 0 60px}
.article-body{max-width:820px;margin:0 auto}
.article-content{background:var(--bg-card);border-radius:var(--radius-lg);padding:clamp(24px,4vw,48px);border:1px solid var(--border-light);box-shadow:var(--shadow-md)}
.article-content p{font-size:1.05rem;line-height:1.85;margin-bottom:1.2rem;color:var(--text-secondary)}
.article-content h2,.article-content h3,.article-content h4{margin-top:1.8em;margin-bottom:0.8em;color:var(--text-white)}
.article-content h2{font-size:1.6rem;border-left:4px solid var(--primary);padding-left:16px}
.article-content h3{font-size:1.25rem}
.article-content ul,.article-content ol{padding-left:24px;margin-bottom:1.2rem;color:var(--text-secondary)}
.article-content ul li{list-style:disc;margin-bottom:6px}
.article-content ol li{list-style:decimal;margin-bottom:6px}
.article-content img{border-radius:var(--radius-md);margin:1.5rem auto;box-shadow:var(--shadow-sm)}
.article-content blockquote{border-left:4px solid var(--primary);padding:16px 20px;margin:1.5rem 0;background:rgba(232,77,61,0.06);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-secondary);font-style:italic}
.article-content a{color:var(--primary-light);text-decoration:underline;text-underline-offset:3px}
.article-content a:hover{color:var(--accent)}
.article-content code{background:var(--bg-soft);padding:2px 8px;border-radius:4px;font-size:0.9em;color:var(--accent)}
.article-footer-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;margin-top:36px;padding-top:24px;border-top:1px solid var(--border-light);gap:16px}
.article-tags{display:flex;flex-wrap:wrap;gap:8px}
.article-tags .tag{display:inline-block;background:var(--bg-soft);color:var(--text-secondary);font-size:0.78rem;padding:4px 14px;border-radius:20px;border:1px solid var(--border-light);transition:var(--transition)}
.article-tags .tag:hover{background:var(--primary);color:#fff;border-color:var(--primary);transform:translateY(-2px)}
.article-share{display:flex;align-items:center;gap:12px}
.article-share span{font-size:0.85rem;color:var(--text-muted)}
.article-share .share-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:var(--bg-soft);color:var(--text-secondary);border:1px solid var(--border-light);transition:var(--transition);font-size:0.95rem}
.article-share .share-btn:hover{background:var(--primary);color:#fff;border-color:var(--primary);transform:translateY(-3px);box-shadow:var(--shadow-primary)}
/* ===== 文章不存在 ===== */
.not-found-wrap{text-align:center;padding:80px 20px;min-height:50vh;display:flex;flex-direction:column;align-items:center;justify-content:center}
.not-found-wrap .nf-icon{font-size:4rem;color:var(--text-muted);margin-bottom:20px;opacity:0.5}
.not-found-wrap h2{font-size:1.8rem;margin-bottom:12px}
.not-found-wrap p{font-size:1.05rem;color:var(--text-muted);margin-bottom:24px;max-width:480px}
.not-found-wrap .btn-home{display:inline-flex;align-items:center;gap:8px;padding:12px 32px;background:var(--primary);color:#fff;border-radius:var(--radius-md);font-weight:600;transition:var(--transition)}
.not-found-wrap .btn-home:hover{background:var(--primary-dark);transform:translateY(-3px);box-shadow:var(--shadow-primary)}
/* ===== 相关文章 ===== */
.related-section{padding:60px 0;background:var(--bg-section);border-top:1px solid var(--border-light)}
.related-section .section-title{text-align:center;margin-bottom:40px}
.related-section .section-title h2{font-size:clamp(1.3rem,2.8vw,2rem);position:relative;display:inline-block;padding-bottom:12px}
.related-section .section-title h2::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:60px;height:3px;background:var(--primary);border-radius:4px}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.related-card{background:var(--bg-card);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border-light);transition:var(--transition)}
.related-card:hover{transform:translateY(-6px);border-color:var(--border-hover);box-shadow:var(--shadow-lg)}
.related-card .card-img{width:100%;height:180px;object-fit:cover;transition:var(--transition)}
.related-card:hover .card-img{transform:scale(1.03)}
.related-card .card-body{padding:18px 20px 22px}
.related-card .card-cat{display:inline-block;font-size:0.7rem;font-weight:600;color:var(--primary-light);text-transform:uppercase;letter-spacing:0.5px;margin-bottom:8px}
.related-card .card-title{font-size:1rem;font-weight:600;line-height:1.4;margin-bottom:8px;color:var(--text-white);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-card .card-title a{color:var(--text-white);transition:var(--transition)}
.related-card .card-title a:hover{color:var(--primary-light)}
.related-card .card-meta{font-size:0.8rem;color:var(--text-muted);display:flex;align-items:center;gap:12px}
.related-card .card-meta i{font-size:0.75rem;color:var(--primary-light)}
.no-posts-msg{text-align:center;padding:40px 20px;color:var(--text-muted);font-size:1rem;grid-column:1/-1}
/* ===== CTA ===== */
.cta-section{padding:60px 0;background:linear-gradient(135deg,#1A1A2E 0%,#0F0F1A 100%);border-top:1px solid var(--border-light)}
.cta-box{background:linear-gradient(135deg,rgba(232,77,61,0.12) 0%,rgba(245,166,35,0.08) 100%);border:1px solid rgba(232,77,61,0.2);border-radius:var(--radius-xl);padding:clamp(32px,5vw,64px);text-align:center;position:relative;overflow:hidden}
.cta-box::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;opacity:0.06;z-index:0}
.cta-box .container{position:relative;z-index:1}
.cta-box h2{font-size:clamp(1.3rem,3vw,2rem);margin-bottom:12px}
.cta-box p{font-size:1.05rem;color:var(--text-secondary);max-width:600px;margin:0 auto 24px}
.cta-box .btn-cta{display:inline-flex;align-items:center;gap:8px;padding:14px 40px;background:var(--primary);color:#fff;font-size:1rem;font-weight:700;border-radius:var(--radius-md);transition:var(--transition);border:2px solid transparent}
.cta-box .btn-cta:hover{background:var(--primary-dark);transform:translateY(-3px);box-shadow:var(--shadow-primary);border-color:var(--primary-light)}
.cta-box .btn-cta i{font-size:1.1rem}
/* ===== 页脚 ===== */
.site-footer{background:#0A0A14;border-top:1px solid var(--border-light);padding:48px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand .logo-text{font-size:1.4rem;font-weight:800;color:var(--text-white);display:inline-block;margin-bottom:8px}
.footer-brand .logo-text:hover{color:var(--primary-light)}
.footer-brand .logo-sub{display:block;margin-bottom:12px;color:rgba(255,255,255,0.4);font-size:0.65rem;letter-spacing:2px;text-transform:uppercase}
.footer-brand p{font-size:0.9rem;color:var(--text-muted);line-height:1.7;max-width:360px}
.footer-col-title{font-size:1rem;font-weight:600;color:var(--text-white);margin-bottom:16px;position:relative;padding-bottom:8px}
.footer-col-title::after{content:'';position:absolute;bottom:0;left:0;width:32px;height:2px;background:var(--primary);border-radius:2px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links li a{color:var(--text-muted);font-size:0.9rem;transition:var(--transition);display:flex;align-items:center;gap:8px}
.footer-links li a:hover{color:var(--primary-light);transform:translateX(4px)}
.footer-links li a i{width:18px;font-size:0.9rem;color:var(--primary-light)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;padding-top:24px;border-top:1px solid var(--border-light);font-size:0.85rem;color:var(--text-muted);gap:16px}
.footer-social{display:flex;gap:12px}
.footer-social a{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:var(--bg-card);color:var(--text-muted);border:1px solid var(--border-light);transition:var(--transition);font-size:1rem}
.footer-social a:hover{background:var(--primary);color:#fff;border-color:var(--primary);transform:translateY(-3px)}
/* ===== 按钮通用 ===== */
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 24px;border-radius:var(--radius-md);font-weight:600;font-size:0.95rem;transition:var(--transition);cursor:pointer;border:2px solid transparent}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-primary)}
.btn-outline{background:transparent;color:var(--text-white);border-color:var(--border-hover)}
.btn-outline:hover{background:var(--bg-card);border-color:var(--primary-light);color:var(--primary-light);transform:translateY(-2px)}
/* ===== 响应式 ===== */
@media(max-width:1024px){
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
    .related-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
}
@media(max-width:768px){
    :root{--header-h:64px}
    .nav-left,.nav-right{display:none}
    .hamburger{display:block}
    .mobile-menu.open{display:flex}
    .logo-wrap{position:relative;left:auto;top:auto;transform:none;margin:0 auto}
    .logo-text{font-size:1.25rem}
    .logo-sub{font-size:0.55rem}
    .article-banner{padding:100px 0 40px}
    .article-banner h1{font-size:1.5rem}
    .article-content{padding:20px}
    .article-content p{font-size:0.98rem;line-height:1.75}
    .article-footer-bar{flex-direction:column;align-items:flex-start}
    .article-share{margin-top:8px}
    .footer-grid{grid-template-columns:1fr;gap:24px}
    .footer-bottom{flex-direction:column;text-align:center}
    .related-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:520px){
    .container{padding:0 14px}
    .article-banner h1{font-size:1.3rem}
    .article-content{padding:16px}
    .article-meta{flex-wrap:wrap;gap:10px;font-size:0.8rem}
    .related-grid{grid-template-columns:1fr}
    .related-card .card-img{height:160px}
    .cta-box{padding:24px 16px}
    .cta-box h2{font-size:1.2rem}
    .btn-cta{padding:12px 24px;font-size:0.9rem}
    .footer-grid{gap:20px}
    .footer-links li a{font-size:0.85rem}
}