/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a2a6c;
            --primary-dark: #0f1b4a;
            --primary-light: #2a3f8a;
            --accent: #e63946;
            --accent-hover: #c92f3a;
            --accent-light: #ff6b6b;
            --gold: #f4a261;
            --gold-light: #f8c291;
            --bg-light: #f8f9fc;
            --bg-dark: #0f1b4a;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-body: #2d3436;
            --text-muted: #636e72;
            --text-light: #b2bec3;
            --border-color: #e9ecef;
            --border-light: #f0f2f5;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 48px rgba(0,0,0,0.12);
            --shadow-xl: 0 32px 64px rgba(0,0,0,0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
            --spacing-section: 5rem;
            --spacing-block: 3rem;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        ul, ol { list-style: none; }

        /* ===== Container ===== */
        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }

        @media (max-width: 768px) {
            .container-custom { padding: 0 1rem; }
        }

        /* ===== Typography ===== */
        .heading-1 {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-dark);
            letter-spacing: -0.02em;
        }
        .heading-2 {
            font-size: 2.4rem;
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-dark);
            letter-spacing: -0.01em;
        }
        .heading-3 {
            font-size: 1.6rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-dark);
        }
        .heading-4 {
            font-size: 1.2rem;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-dark);
        }
        .text-lead {
            font-size: 1.15rem;
            color: var(--text-muted);
            line-height: 1.8;
        }

        @media (max-width: 768px) {
            .heading-1 { font-size: 2rem; }
            .heading-2 { font-size: 1.6rem; }
            .heading-3 { font-size: 1.25rem; }
            .text-lead { font-size: 1rem; }
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            position: relative;
        }

        .nav-left, .nav-right {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .nav-left { flex: 1; justify-content: flex-start; }
        .nav-right { flex: 1; justify-content: flex-end; }

        .nav-center {
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
            z-index: 2;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary-dark);
            white-space: nowrap;
            letter-spacing: -0.01em;
        }
        .site-logo i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .site-logo:hover { color: var(--primary-dark); }

        .nav-link-custom {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1rem;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .nav-link-custom:hover {
            color: var(--accent);
            background: rgba(230,57,70,0.06);
        }
        .nav-link-custom.active {
            color: var(--accent);
            font-weight: 600;
        }
        .nav-link-custom.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 1rem;
            right: 1rem;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1.25rem;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            border: none;
        }
        .nav-cta:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(230,57,70,0.35);
        }

        /* Mobile toggle */
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text-dark);
            padding: 0.25rem 0.5rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .navbar-toggler-custom:hover { color: var(--accent); }

        /* Mobile menu */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255,255,255,0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            z-index: 1040;
            padding: 2rem 1.5rem;
            flex-direction: column;
            gap: 1rem;
            overflow-y: auto;
            opacity: 0;
            transform: translateY(-10px);
            transition: opacity 0.3s ease, transform 0.3s ease;
        }
        .mobile-menu.open {
            display: flex;
            opacity: 1;
            transform: translateY(0);
        }
        .mobile-menu .nav-link-custom {
            font-size: 1.2rem;
            padding: 0.75rem 1rem;
            border-bottom: 1px solid var(--border-light);
        }
        .mobile-menu .nav-cta {
            justify-content: center;
            margin-top: 1rem;
            padding: 0.75rem 1.5rem;
        }

        @media (max-width: 768px) {
            .nav-left, .nav-right { display: none; }
            .navbar-toggler-custom { display: block; }
            .nav-center { position: static; transform: none; }
            .nav-wrapper { height: 64px; }
            .site-logo { font-size: 1.2rem; }
        }

        /* ===== Hero Section ===== */
        .hero-section {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,27,74,0.88) 0%, rgba(26,42,108,0.72) 50%, rgba(15,27,74,0.88) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 4rem 0;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.4rem 1.2rem;
            background: rgba(230,57,70,0.2);
            border: 1px solid rgba(230,57,70,0.3);
            border-radius: 50px;
            color: var(--gold-light);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1.5rem;
            backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: 3.6rem;
            font-weight: 800;
            line-height: 1.15;
            color: #fff;
            letter-spacing: -0.02em;
            max-width: 760px;
        }
        .hero-title .highlight {
            color: var(--accent);
            position: relative;
        }
        .hero-title .highlight::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 0;
            right: 0;
            height: 6px;
            background: rgba(230,57,70,0.3);
            border-radius: 3px;
        }
        .hero-desc {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            margin-top: 1.5rem;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 2.5rem;
        }
        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.9rem 2.2rem;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition);
        }
        .btn-hero-primary:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(230,57,70,0.4);
        }
        .btn-hero-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.9rem 2.2rem;
            background: rgba(255,255,255,0.12);
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1.05rem;
            border: 1px solid rgba(255,255,255,0.25);
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }
        .btn-hero-secondary:hover {
            background: rgba(255,255,255,0.2);
            color: #fff;
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 2.5rem;
            margin-top: 3.5rem;
            padding-top: 2.5rem;
            border-top: 1px solid rgba(255,255,255,0.12);
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
            margin-top: 0.25rem;
        }

        @media (max-width: 768px) {
            .hero-section { min-height: 80vh; }
            .hero-title { font-size: 2rem; }
            .hero-desc { font-size: 1rem; }
            .hero-stats { gap: 1.5rem; }
            .hero-stat-number { font-size: 1.8rem; }
        }
        @media (max-width: 520px) {
            .hero-title { font-size: 1.7rem; }
            .hero-actions { flex-direction: column; }
            .btn-hero-primary, .btn-hero-secondary { width: 100%; justify-content: center; }
            .hero-stats { justify-content: space-around; }
        }

        /* ===== Section Common ===== */
        .section-padding {
            padding: var(--spacing-section) 0;
        }
        .section-title-wrap {
            text-align: center;
            max-width: 720px;
            margin: 0 auto var(--spacing-block);
        }
        .section-title-wrap .section-subtitle {
            display: inline-block;
            padding: 0.3rem 1.2rem;
            background: rgba(230,57,70,0.1);
            color: var(--accent);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
            letter-spacing: 0.02em;
        }
        .section-title-wrap .heading-2 {
            margin-bottom: 0.75rem;
        }
        .section-title-wrap .text-lead {
            max-width: 560px;
            margin: 0 auto;
        }

        @media (max-width: 768px) {
            .section-padding { --spacing-section: 3rem; }
        }

        /* ===== Features / Core Service ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .feature-icon {
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(230,57,70,0.08);
            border-radius: var(--radius-md);
            font-size: 1.8rem;
            color: var(--accent);
            margin-bottom: 1.25rem;
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--accent);
            color: #fff;
        }
        .feature-card .heading-4 {
            margin-bottom: 0.6rem;
        }
        .feature-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .feature-tag {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            background: rgba(26,42,108,0.06);
            color: var(--primary);
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 500;
            margin-top: 0.75rem;
        }

        @media (max-width: 992px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 576px) {
            .features-grid { grid-template-columns: 1fr; }
        }

        /* ===== Category / Classification ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            min-height: 260px;
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .category-card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .category-card-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(15,27,74,0.6) 0%, transparent 60%);
        }
        .category-card-body {
            padding: 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card-body .heading-4 {
            margin-bottom: 0.4rem;
        }
        .category-card-body p {
            color: var(--text-muted);
            font-size: 0.92rem;
            flex: 1;
        }
        .category-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 1.5rem 1.25rem;
            border-top: 1px solid var(--border-light);
        }
        .category-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            padding: 0.25rem 1rem;
            background: rgba(230,57,70,0.08);
            color: var(--accent);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
        }
        .category-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .category-link:hover { color: var(--accent); }

        @media (max-width: 768px) {
            .category-grid { grid-template-columns: 1fr; }
        }

        /* ===== Latest News / CMS List ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .news-card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .news-card-body {
            padding: 1.25rem 1.25rem 1.5rem;
        }
        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 0.6rem;
        }
        .news-card-meta .badge-custom {
            padding: 0.15rem 0.6rem;
            background: rgba(26,42,108,0.08);
            color: var(--primary);
            border-radius: 4px;
            font-weight: 500;
        }
        .news-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 0.4rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-title a {
            color: var(--text-dark);
        }
        .news-card-title a:hover { color: var(--accent); }
        .news-card-excerpt {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 3rem 1rem;
            color: var(--text-muted);
            font-size: 1.05rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }

        @media (max-width: 992px) {
            .news-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 576px) {
            .news-grid { grid-template-columns: 1fr; }
        }

        /* ===== Stats / Data Block ===== */
        .stats-section {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            position: relative;
        }
        .stats-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,27,74,0.92) 0%, rgba(26,42,108,0.85) 100%);
        }
        .stats-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
        }
        .stat-item {
            text-align: center;
            padding: 2rem 1rem;
            background: rgba(255,255,255,0.06);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255,255,255,0.08);
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255,255,255,0.10);
            transform: translateY(-3px);
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stat-number .suffix {
            font-size: 1.6rem;
            color: var(--gold);
        }
        .stat-label {
            font-size: 1rem;
            color: rgba(255,255,255,0.7);
            margin-top: 0.5rem;
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
            .stat-number { font-size: 2rem; }
        }
        @media (max-width: 520px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
        }

        /* ===== Process / Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2.5rem;
            counter-reset: step;
        }
        .step-card {
            text-align: center;
            padding: 2.5rem 1.5rem;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            position: relative;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .step-number {
            width: 50px;
            height: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--accent);
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            border-radius: 50%;
            margin: 0 auto 1.25rem;
            position: relative;
        }
        .step-number::after {
            content: '';
            position: absolute;
            inset: -4px;
            border-radius: 50%;
            border: 2px dashed rgba(230,57,70,0.3);
        }
        .step-card .heading-4 {
            margin-bottom: 0.5rem;
        }
        .step-card p {
            color: var(--text-muted);
            font-size: 0.92rem;
        }

        @media (max-width: 768px) {
            .steps-grid { grid-template-columns: 1fr; gap: 1.5rem; }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(230,57,70,0.2);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 1.25rem 1.5rem;
            background: none;
            border: none;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            text-align: left;
            cursor: pointer;
            transition: var(--transition);
            gap: 1rem;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question .faq-icon {
            font-size: 1.2rem;
            color: var(--accent);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"] .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 1.5rem 1.25rem;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }
        .faq-answer p {
            margin-bottom: 0.5rem;
        }
        .faq-answer p:last-child { margin-bottom: 0; }

        @media (max-width: 768px) {
            .faq-question { font-size: 0.95rem; padding: 1rem 1.25rem; }
            .faq-answer { padding: 0 1.25rem 1rem; font-size: 0.9rem; }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,27,74,0.88) 0%, rgba(26,42,108,0.78) 100%);
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 3rem 0;
        }
        .cta-content .heading-2 {
            color: #fff;
            margin-bottom: 1rem;
        }
        .cta-content .text-lead {
            color: rgba(255,255,255,0.75);
            max-width: 560px;
            margin: 0 auto 2rem;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: center;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 3rem 0 1.5rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-brand .site-logo {
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.55);
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .footer-col ul li {
            margin-bottom: 0.4rem;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.45);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.55);
        }
        .footer-bottom a:hover { color: var(--accent); }
        .footer-social {
            display: flex;
            gap: 0.75rem;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: #fff;
        }

        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== Utility Classes ===== */
        .bg-white { background: #fff; }
        .bg-light-custom { background: var(--bg-light); }
        .text-center { text-align: center; }
        .mt-1 { margin-top: 0.5rem; }
        .mt-2 { margin-top: 1rem; }
        .mt-3 { margin-top: 1.5rem; }
        .mt-4 { margin-top: 2rem; }
        .mb-1 { margin-bottom: 0.5rem; }
        .mb-2 { margin-bottom: 1rem; }
        .mb-3 { margin-bottom: 1.5rem; }
        .mb-4 { margin-bottom: 2rem; }
        .gap-1 { gap: 0.5rem; }
        .gap-2 { gap: 1rem; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-wrap { flex-wrap: wrap; }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--bg-light); }
        ::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

        /* ===== Focus & Accessibility ===== */
        :focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .btn:focus-visible, .nav-link-custom:focus-visible, .faq-question:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== Responsive fine-tune ===== */
        @media (max-width: 992px) {
            .container-custom { max-width: 100%; }
        }
        @media (max-width: 576px) {
            :root { --spacing-section: 2.5rem; }
            .section-title-wrap { margin-bottom: 2rem; }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --color-primary: #dc2626;
            --color-primary-dark: #b91c1c;
            --color-primary-light: #fca5a5;
            --color-accent: #f59e0b;
            --color-accent-dark: #d97706;
            --color-bg: #f8fafc;
            --color-bg-alt: #f1f5f9;
            --color-bg-dark: #0f172a;
            --color-bg-card: #ffffff;
            --color-text: #1e293b;
            --color-text-light: #64748b;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-white: #ffffff;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --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), 0 2px 8px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12), 0 4px 16px rgba(0,0,0,0.06);
            --shadow-xl: 0 24px 60px rgba(0,0,0,0.16);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-base: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-base);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--color-primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--color-primary-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
        button, input, textarea { font-family: inherit; }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.25; color: var(--color-text); margin-bottom: 0.5rem; }
        p { margin-bottom: 1rem; color: var(--color-text-light); }

        /* ===== Container ===== */
        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container-custom { padding: 0 16px; }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: var(--color-bg-dark);
            position: sticky;
            top: 0;
            z-index: 1050;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            box-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            position: relative;
        }
        .nav-left, .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-center {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--color-white);
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: 0.5px;
            text-decoration: none;
            transition: var(--transition);
        }
        .site-logo i {
            color: var(--color-primary);
            font-size: 1.75rem;
        }
        .site-logo span {
            background: linear-gradient(135deg, #fff 60%, var(--color-primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo:hover { opacity: 0.9; transform: scale(1.02); }
        .nav-link-custom {
            color: rgba(255,255,255,0.75);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            text-decoration: none;
        }
        .nav-link-custom:hover {
            color: var(--color-white);
            background: rgba(255,255,255,0.08);
        }
        .nav-link-custom.active {
            color: var(--color-white);
            background: var(--color-primary);
        }
        .nav-cta {
            background: var(--color-primary);
            color: var(--color-white);
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .nav-cta:hover {
            background: var(--color-primary-dark);
            color: var(--color-white);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(220,38,38,0.35);
        }
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            color: var(--color-white);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .navbar-toggler-custom:hover { background: rgba(255,255,255,0.08); }
        .mobile-menu {
            display: none;
            flex-direction: column;
            background: var(--color-bg-dark);
            border-top: 1px solid rgba(255,255,255,0.06);
            padding: 16px 24px 24px;
            gap: 8px;
        }
        .mobile-menu .nav-link-custom,
        .mobile-menu .nav-cta {
            width: 100%;
            text-align: center;
            padding: 12px;
        }
        .mobile-menu.open { display: flex; }

        @media (max-width: 992px) {
            .nav-left, .nav-right { display: none; }
            .navbar-toggler-custom { display: block; }
            .nav-center { position: static; transform: none; }
            .nav-wrapper { justify-content: space-between; }
        }
        @media (min-width: 993px) {
            .mobile-menu { display: none !important; }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1e293b 100%);
            overflow: hidden;
            min-height: 300px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15;
            z-index: 1;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.85) 0%, rgba(30,41,59,0.7) 100%);
            z-index: 2;
        }
        .page-banner .container-custom { position: relative; z-index: 3; }
        .page-banner .breadcrumb {
            background: transparent;
            padding: 0;
            margin-bottom: 16px;
            font-size: 0.85rem;
        }
        .page-banner .breadcrumb-item,
        .page-banner .breadcrumb-item a {
            color: rgba(255,255,255,0.6);
        }
        .page-banner .breadcrumb-item.active { color: var(--color-accent); }
        .page-banner .breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,0.3); }
        .page-banner .banner-category {
            display: inline-block;
            background: var(--color-primary);
            color: var(--color-white);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .page-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-white);
            max-width: 800px;
            line-height: 1.2;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .page-banner .banner-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
        }
        .page-banner .banner-meta i { margin-right: 6px; color: var(--color-accent); }

        @media (max-width: 768px) {
            .page-banner { padding: 70px 0 50px; min-height: 220px; }
            .page-banner h1 { font-size: 1.8rem; }
            .page-banner .banner-meta { gap: 12px; font-size: 0.8rem; }
        }
        @media (max-width: 520px) {
            .page-banner h1 { font-size: 1.5rem; }
            .page-banner { padding: 60px 0 40px; }
        }

        /* ===== Article Content ===== */
        .article-section {
            padding: 60px 0 40px;
        }
        .article-main {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 48px;
            margin-bottom: 40px;
        }
        .article-meta-top {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 32px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--color-border);
            font-size: 0.9rem;
            color: var(--color-text-light);
        }
        .article-meta-top i { margin-right: 6px; color: var(--color-primary); }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--color-text);
        }
        .article-body p {
            margin-bottom: 1.5rem;
            color: var(--color-text);
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 2rem auto;
            box-shadow: var(--shadow-md);
        }
        .article-body h2, .article-body h3 {
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            color: var(--color-text);
        }
        .article-body blockquote {
            border-left: 4px solid var(--color-primary);
            background: var(--color-bg-alt);
            padding: 20px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 2rem 0;
            font-style: italic;
            color: var(--color-text-light);
        }
        .article-body ul, .article-body ol {
            list-style: disc;
            padding-left: 1.5rem;
            margin-bottom: 1.5rem;
            color: var(--color-text);
        }
        .article-body ul li, .article-body ol li { margin-bottom: 0.5rem; }
        .article-body a { color: var(--color-primary); text-decoration: underline; }
        .article-body a:hover { color: var(--color-primary-dark); }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--color-border);
        }
        .article-tags .tag {
            background: var(--color-bg-alt);
            color: var(--color-text-light);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .article-tags .tag:hover {
            background: var(--color-primary);
            color: var(--color-white);
        }

        /* ===== Article Navigation ===== */
        .article-nav {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 48px;
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--color-bg-card);
            padding: 16px 24px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            color: var(--color-text);
            font-weight: 500;
            font-size: 0.9rem;
            max-width: 48%;
            flex: 1;
        }
        .article-nav a:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            color: var(--color-primary);
        }
        .article-nav a i { font-size: 1.1rem; color: var(--color-primary); }
        .article-nav a.nav-next { text-align: right; justify-content: flex-end; }

        @media (max-width: 640px) {
            .article-nav a { max-width: 100%; flex: 1 1 100%; }
            .article-nav a.nav-next { text-align: left; justify-content: flex-start; }
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 40px 0 60px;
            background: var(--color-bg-alt);
        }
        .related-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 32px;
            position: relative;
            display: inline-block;
        }
        .related-section h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--color-primary);
            border-radius: 2px;
            margin-top: 8px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }
        .related-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 20px;
        }
        .related-card .card-category {
            display: inline-block;
            background: var(--color-primary-light);
            color: var(--color-primary-dark);
            font-size: 0.7rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 12px;
            margin-bottom: 10px;
        }
        .related-card .card-title {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .related-card .card-title a { color: var(--color-text); }
        .related-card .card-title a:hover { color: var(--color-primary); }
        .related-card .card-meta {
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }

        @media (max-width: 992px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 640px) {
            .related-grid { grid-template-columns: 1fr; }
            .related-card .card-img { height: 180px; }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1a1a2e 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            z-index: 1;
        }
        .cta-section .container-custom { position: relative; z-index: 2; }
        .cta-section .cta-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 16px;
        }
        .cta-section .cta-text {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.7);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--color-primary);
            color: var(--color-white);
            padding: 16px 40px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .cta-section .btn-cta:hover {
            background: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(220,38,38,0.4);
            color: var(--color-white);
        }
        .cta-section .btn-outline-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: var(--color-white);
            padding: 16px 40px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.05rem;
            border: 2px solid rgba(255,255,255,0.25);
            transition: var(--transition);
            cursor: pointer;
            margin-left: 16px;
        }
        .cta-section .btn-outline-cta:hover {
            border-color: var(--color-white);
            background: rgba(255,255,255,0.06);
            transform: translateY(-2px);
            color: var(--color-white);
        }

        @media (max-width: 640px) {
            .cta-section { padding: 60px 0; text-align: center; }
            .cta-section .cta-title { font-size: 1.5rem; }
            .cta-section .btn-cta, .cta-section .btn-outline-cta { width: 100%; margin: 8px 0; justify-content: center; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .site-footer .footer-brand .site-logo {
            font-size: 1.3rem;
            margin-bottom: 16px;
            display: inline-flex;
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.5);
            max-width: 360px;
            line-height: 1.7;
        }
        .site-footer h5 {
            color: var(--color-white);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .site-footer ul li { margin-bottom: 12px; }
        .site-footer ul li a {
            color: rgba(255,255,255,0.5);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .site-footer ul li a:hover {
            color: var(--color-white);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.06);
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-social { display: flex; gap: 16px; }
        .footer-social a {
            color: rgba(255,255,255,0.4);
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .footer-social a:hover { color: var(--color-primary); transform: scale(1.15); }

        @media (max-width: 992px) {
            .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 640px) {
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
        }
        .not-found-box i {
            font-size: 4rem;
            color: var(--color-text-muted);
            margin-bottom: 24px;
        }
        .not-found-box h2 {
            font-size: 1.8rem;
            margin-bottom: 16px;
        }
        .not-found-box p {
            color: var(--color-text-light);
            margin-bottom: 24px;
        }
        .not-found-box .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary);
            color: var(--color-white);
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-box .btn-home:hover {
            background: var(--color-primary-dark);
            transform: translateY(-2px);
            color: var(--color-white);
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 0.5rem; }
        .mb-2 { margin-bottom: 1rem; }
        .mb-3 { margin-bottom: 1.5rem; }
        .mb-4 { margin-bottom: 2rem; }
        .mt-2 { margin-top: 1rem; }
        .mt-3 { margin-top: 1.5rem; }
        .mt-4 { margin-top: 2rem; }
        .gap-2 { gap: 0.75rem; }
        .gap-3 { gap: 1rem; }

        /* ===== Responsive Article ===== */
        @media (max-width: 768px) {
            .article-main { padding: 24px; }
            .article-body { font-size: 1rem; }
        }
        @media (max-width: 520px) {
            .article-main { padding: 16px; border-radius: var(--radius-md); }
            .article-body { font-size: 0.95rem; }
            .article-meta-top { flex-direction: column; gap: 8px; }
        }

        /* ===== Smooth fade in ===== */
        .fade-in { animation: fadeIn 0.6s ease forwards; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --dark: #0b1a2e;
            --dark-bg: #0f1f3a;
            --bg-light: #f8f9fa;
            --bg-card: #ffffff;
            --text-primary: #1a1a2e;
            --text-body: #333333;
            --text-muted: #6c757d;
            --text-light: #f1f1f1;
            --border-color: #e0e0e0;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 50px rgba(0,0,0,0.15);
            --shadow-hover: 0 16px 40px rgba(230,57,70,0.18);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container-w: 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);
            color: var(--text-body);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        button, input, textarea { font-family: inherit; outline: none; }
        ul { list-style: none; padding: 0; margin: 0; }

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

        /* ========== Header / Nav ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-h);
            background: rgba(15, 31, 58, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            z-index: 1050;
            display: flex;
            align-items: center;
        }

        .nav-wrapper {
            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: 6px;
        }

        .nav-center {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
        }
        .site-logo i { color: var(--primary); font-size: 1.8rem; }
        .site-logo span { background: linear-gradient(135deg, #fff 60%, var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .site-logo:hover { color: #fff; opacity: 0.9; }

        .nav-link-custom {
            color: rgba(255,255,255,0.75);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .nav-link-custom:hover { color: #fff; background: rgba(255,255,255,0.08); }
        .nav-link-custom.active { color: #fff; background: rgba(230,57,70,0.2); }
        .nav-link-custom.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        .nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .nav-cta:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(230,57,70,0.35); }

        .navbar-toggler-custom {
            display: none;
            background: none;
            border: 2px solid rgba(255,255,255,0.2);
            color: #fff;
            font-size: 1.4rem;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
        }
        .navbar-toggler-custom:hover { border-color: var(--primary); color: var(--primary); }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            background: rgba(15, 31, 58, 0.98);
            backdrop-filter: blur(12px);
            padding: 20px 24px;
            flex-direction: column;
            gap: 12px;
            border-bottom: 2px solid rgba(230,57,70,0.3);
            z-index: 1040;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }
        .mobile-menu.open {
            max-height: 500px;
            padding: 20px 24px;
            display: flex;
        }
        .mobile-menu .nav-link-custom,
        .mobile-menu .nav-cta {
            width: 100%;
            text-align: center;
            padding: 12px;
        }

        /* ========== Hero ========== */
        .hero-section {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, var(--dark-bg) 0%, #162a4a 100%);
            position: relative;
            overflow: hidden;
            min-height: 480px;
            display: flex;
            align-items: center;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(45deg, rgba(230,57,70,0.15) 0%, transparent 60%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 860px;
            margin: 0 auto;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(230,57,70,0.2);
            color: var(--primary-light);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 20px;
            border-radius: 50px;
            border: 1px solid rgba(230,57,70,0.3);
            margin-bottom: 20px;
            letter-spacing: 1px;
        }
        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 18px;
        }
        .hero-title span { color: var(--primary-light); }
        .hero-sub {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.75);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 14px 34px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 8px 24px rgba(230,57,70,0.3);
        }
        .btn-primary-custom:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 12px 32px rgba(230,57,70,0.4); }
        .btn-outline-custom {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.3);
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-custom:hover { border-color: var(--primary); color: var(--primary-light); background: rgba(230,57,70,0.1); transform: translateY(-2px); }

        /* ========== Section通用 ========== */
        .section-title {
            font-size: 2.0rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-sub {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 600px;
            margin-bottom: 40px;
        }
        .section-padding { padding: 80px 0; }
        .bg-white { background: #fff; }
        .bg-light-custom { background: var(--bg-light); }

        /* ========== 赛事分类标签 ========== */
        .category-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 40px;
        }
        .category-tab {
            padding: 10px 26px;
            border-radius: 50px;
            background: #fff;
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.92rem;
            border: 2px solid var(--border-color);
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .category-tab:hover { border-color: var(--primary); color: var(--primary); background: rgba(230,57,70,0.04); }
        .category-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); box-shadow: 0 6px 20px rgba(230,57,70,0.25); }
        .category-tab i { font-size: 1.0rem; }

        /* ========== 赛事卡片 ========== */
        .event-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            border: 1px solid rgba(0,0,0,0.04);
        }
        .event-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
        .event-card-img {
            position: relative;
            height: 200px;
            overflow: hidden;
            background: var(--dark-bg);
        }
        .event-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .event-card:hover .event-card-img img { transform: scale(1.05); }
        .event-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            z-index: 2;
        }
        .event-card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .event-card-body h5 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .event-card-body p {
            color: var(--text-muted);
            font-size: 0.88rem;
            margin-bottom: 14px;
            flex: 1;
        }
        .event-meta {
            display: flex;
            align-items: center;
            gap: 18px;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 14px;
            flex-wrap: wrap;
        }
        .event-meta i { color: var(--primary); width: 16px; }
        .event-card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 12px;
            border-top: 1px solid var(--border-color);
        }
        .event-tag {
            display: inline-block;
            background: rgba(230,57,70,0.08);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 50px;
        }
        .event-link {
            color: var(--secondary);
            font-weight: 600;
            font-size: 0.85rem;
        }
        .event-link:hover { color: var(--primary); }

        /* ========== 赛事日程 ========== */
        .schedule-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .schedule-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: #fff;
            padding: 18px 24px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border-left: 4px solid var(--primary);
            cursor: default;
        }
        .schedule-item:hover { box-shadow: var(--shadow-md); transform: translateX(4px); }
        .schedule-date {
            min-width: 80px;
            text-align: center;
            font-weight: 700;
            color: var(--primary);
        }
        .schedule-date .day { font-size: 1.6rem; line-height: 1; display: block; }
        .schedule-date .month { font-size: 0.8rem; color: var(--text-muted); font-weight: 500; }
        .schedule-info { flex: 1; }
        .schedule-info h6 { font-size: 1.0rem; font-weight: 600; margin-bottom: 2px; color: var(--text-primary); }
        .schedule-info span { font-size: 0.85rem; color: var(--text-muted); }
        .schedule-status {
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(69, 123, 157, 0.12);
            color: var(--secondary-light);
        }
        .schedule-status.live { background: rgba(230,57,70,0.12); color: var(--primary); }

        /* ========== 数据统计 ========== */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }
        .stat-card:hover { background: rgba(255,255,255,0.10); transform: translateY(-4px); border-color: rgba(230,57,70,0.3); }
        .stat-card .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stat-card .num i { color: var(--primary-light); font-size: 1.6rem; margin-right: 6px; }
        .stat-card .label {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.65);
            margin-top: 6px;
        }

        /* ========== FAQ ========== */
        .faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.0rem;
            background: #fff;
            transition: var(--transition);
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { transition: transform 0.3s ease; color: var(--primary); font-size: 1.1rem; }
        .faq-question.open i { transform: rotate(45deg); }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.8;
            display: none;
        }
        .faq-answer.open { display: block; }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--dark-bg), #1a2f4e);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-content { position: relative; z-index: 2; }
        .cta-content h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .cta-content p {
            color: rgba(255,255,255,0.7);
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 30px;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--dark);
            color: rgba(255,255,255,0.7);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo { font-size: 1.5rem; margin-bottom: 14px; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.8; max-width: 320px; color: rgba(255,255,255,0.6); }
        .footer-col h5 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h5::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
        }
        .footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
            font-size: 0.85rem;
        }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            color: rgba(255,255,255,0.5);
            font-size: 1.2rem;
            transition: var(--transition);
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255,255,255,0.05);
        }
        .footer-social a:hover { color: #fff; background: var(--primary); transform: translateY(-2px); }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .hero-title { font-size: 2.6rem; }
            .stat-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            :root { --header-h: 64px; }
            .nav-left, .nav-right { display: none; }
            .navbar-toggler-custom { display: block; }
            .nav-center { position: static; transform: none; }
            .nav-wrapper { justify-content: space-between; }
            .hero-section { padding: 110px 0 60px; min-height: 380px; }
            .hero-title { font-size: 2.0rem; }
            .hero-sub { font-size: 1.0rem; }
            .section-title { font-size: 1.6rem; }
            .section-padding { padding: 56px 0; }
            .event-card-img { height: 170px; }
            .schedule-item { flex-wrap: wrap; gap: 12px; padding: 16px 18px; }
            .schedule-date { min-width: 60px; }
            .schedule-date .day { font-size: 1.3rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-card { padding: 24px 16px; }
        }

        @media (max-width: 520px) {
            .container-custom { padding: 0 16px; }
            .hero-title { font-size: 1.6rem; }
            .hero-sub { font-size: 0.92rem; }
            .btn-primary-custom, .btn-outline-custom { padding: 10px 22px; font-size: 0.9rem; }
            .category-tab { padding: 8px 18px; font-size: 0.82rem; }
            .event-card-img { height: 150px; }
            .event-card-body { padding: 16px 18px; }
            .stat-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-card .num { font-size: 1.8rem; }
            .cta-content h2 { font-size: 1.5rem; }
            .footer-grid { gap: 24px; }
        }

        /* ========== 辅助 ========== */
        .text-primary-custom { color: var(--primary); }
        .bg-dark-custom { background: var(--dark-bg); }
        .rounded-custom { border-radius: var(--radius-md); }
        .shadow-custom { box-shadow: var(--shadow-sm); }
        .mb-20 { margin-bottom: 20px; }
        .mt-20 { margin-top: 20px; }
        .gap-16 { gap: 16px; }

        /* ========== Bootstrap 覆盖 ========== */
        .btn { border-radius: 50px; font-weight: 600; padding: 10px 24px; transition: var(--transition); }
        .btn-primary { background: var(--primary); border-color: var(--primary); }
        .btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(230,57,70,0.3); }
        .btn-outline-primary { color: var(--primary); border-color: var(--primary); }
        .btn-outline-primary:hover { background: var(--primary); border-color: var(--primary); color: #fff; }
        .card { border-radius: var(--radius-md); border: none; box-shadow: var(--shadow-sm); transition: var(--transition); }
        .card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .badge { font-weight: 600; padding: 6px 14px; border-radius: 50px; }
        .badge.bg-danger { background: var(--primary) !important; }
        .list-group-item { border-color: var(--border-color); padding: 14px 20px; }