/* roulang page: index */
:root {
    --primary: #0f2a43;
    --primary-light: #163a5c;
    --primary-dark: #081a2c;
    --accent: #ff6b4a;
    --accent-hover: #e85a3a;
    --accent-light: #fff1ec;
    --bg: #f6f8fc;
    --bg-white: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 8px rgba(15, 42, 67, 0.06);
    --shadow-md: 0 8px 24px rgba(15, 42, 67, 0.08);
    --shadow-lg: 0 16px 40px rgba(15, 42, 67, 0.12);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  /* ===== Reset / Base ===== */
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
  }
  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
  }
  img {
    max-width: 100%;
    height: auto;
    display: block;
  }
  a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
  }
  button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    outline: none;
    border: none;
    background: none;
  }
  ul, ol {
    list-style: none;
  }
  h1, h2, h3, h4, h5, h6 {
    line-height: 1.25;
    font-weight: 700;
    color: var(--primary);
  }
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
  }

  /* ===== Utility ===== */
  .section {
    padding: 88px 0;
  }
  .section-sm {
    padding: 56px 0;
  }
  .section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 52px;
  }
  .section-header .eyebrow {
    display: inline-block;
    background: var(--accent-light);
    color: var(--accent);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.05em;
    padding: 6px 16px;
    border-radius: 999px;
    margin-bottom: 14px;
  }
  .section-header h2 {
    font-size: clamp(28px, 4vw, 40px);
    margin-bottom: 16px;
  }
  .section-header p {
    color: var(--text-muted);
    font-size: 16px;
    line-height: 1.7;
  }

  /* ===== Buttons ===== */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    font-size: 15px;
    border-radius: var(--radius-md);
    padding: 12px 28px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    white-space: nowrap;
  }
  .btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 14px rgba(255, 107, 74, 0.35);
  }
  .btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 74, 0.45);
  }
  .btn-secondary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(15, 42, 67, 0.25);
  }
  .btn-secondary:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
  }
  .btn-outline {
    background: transparent;
    color: #fff;
    border-color: rgba(255,255,255,0.7);
  }
  .btn-outline:hover {
    background: rgba(255,255,255,0.15);
    border-color: #fff;
    transform: translateY(-2px);
  }
  .btn-light {
    background: #fff;
    color: var(--primary);
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  }
  .btn-light:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  }
  .btn:focus-visible {
    outline: 3px solid rgba(255, 107, 74, 0.5);
    outline-offset: 2px;
  }

  /* ===== Header / Nav ===== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(226,232,240,0.7);
    transition: var(--transition);
  }
  .site-header .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 20px;
  }
  .brand {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
  }
  .brand-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    font-weight: 800;
    box-shadow: 0 4px 12px rgba(15,42,67,0.25);
  }
  .brand-text {
    font-size: 18px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.01em;
    white-space: nowrap;
  }
  .brand-text span {
    color: var(--accent);
  }
  .main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
  }
  .main-nav a {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-muted);
    transition: var(--transition);
  }
  .main-nav a:hover {
    color: var(--primary);
    background: #f1f5f9;
  }
  .main-nav a.active {
    color: var(--primary);
    font-weight: 600;
    background: rgba(15,42,67,0.06);
  }
  .main-nav a.active::after {
    content: '';
    display: block;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
    margin-top: 2px;
  }
  .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .search-box {
    position: relative;
    display: flex;
    align-items: center;
  }
  .search-box input {
    width: 200px;
    height: 42px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: #f1f5f9;
    padding: 0 42px 0 18px;
    font-size: 14px;
    color: var(--text);
    transition: var(--transition);
  }
  .search-box input:focus {
    width: 240px;
    background: #fff;
    border-color: rgba(255,107,74,0.4);
    box-shadow: 0 0 0 4px rgba(255,107,74,0.1);
  }
  .search-box i {
    position: absolute;
    right: 16px;
    color: var(--text-muted);
    font-size: 14px;
    pointer-events: none;
  }
  .header-cta {
    height: 42px;
    padding: 0 24px;
    font-size: 14px;
    border-radius: 999px;
  }
  .menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: var(--accent-light);
    color: var(--accent);
    align-items: center;
    justify-content: center;
    font-size: 20px;
    cursor: pointer;
    transition: var(--transition);
  }
  .menu-toggle:hover {
    background: rgba(255,107,74,0.15);
  }

  /* ===== Hero ===== */
  .hero {
    position: relative;
    min-height: 640px;
    display: flex;
    align-items: center;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    overflow: hidden;
  }
  .hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg, rgba(8,26,44,0.95) 0%, rgba(15,42,67,0.82) 45%, rgba(15,42,67,0.55) 100%);
  }
  .hero::after {
    content: '';
    position: absolute;
    right: -120px;
    top: -120px;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(255,107,74,0.25) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
  }
  .hero .container {
    position: relative;
    z-index: 2;
    padding-top: 120px;
    padding-bottom: 120px;
  }
  .hero-content {
    max-width: 680px;
  }
  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    padding: 8px 18px;
    border-radius: 999px;
    margin-bottom: 28px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }
  .hero-badge i {
    color: var(--accent);
  }
  .hero h1 {
    font-size: clamp(36px, 5.5vw, 58px);
    color: #fff;
    line-height: 1.15;
    margin-bottom: 22px;
    letter-spacing: -0.02em;
    font-weight: 800;
  }
  .hero h1 .highlight {
    color: var(--accent);
    position: relative;
  }
  .hero p {
    font-size: 17px;
    color: rgba(255,255,255,0.85);
    line-height: 1.8;
    margin-bottom: 36px;
    max-width: 560px;
  }
  .hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 52px;
  }
  .hero-stats {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
    border-top: 1px solid rgba(255,255,255,0.2);
    padding-top: 36px;
    max-width: 560px;
  }
  .hero-stats .stat {
    flex: 1;
    min-width: 100px;
  }
  .hero-stats .stat-value {
    font-size: 30px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
  }
  .hero-stats .stat-value em {
    color: var(--accent);
    font-style: normal;
  }
  .hero-stats .stat-label {
    font-size: 14px;
    color: rgba(255,255,255,0.75);
    margin-top: 4px;
  }

  /* ===== Card ===== */
  .card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
  }
  .card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
  }

  /* ===== Feature ===== */
  .feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
  }
  .feature-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    padding: 36px 30px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
  }
  .feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), transparent);
    border-radius: 3px;
    opacity: 0;
    transition: var(--transition);
  }
  .feature-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
  }
  .feature-card:hover::before {
    opacity: 1;
  }
  .feature-card .feature-icon {
    width: 52px;
    height: 52px;
    background: var(--accent-light);
    color: var(--accent);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 20px;
    transition: var(--transition);
  }
  .feature-card:hover .feature-icon {
    background: var(--accent);
    color: #fff;
    transform: rotate(-8deg);
  }
  .feature-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
  }
  .feature-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.65;
  }

  /* ===== Category ===== */
  .category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
  }
  .category-card {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
  }
  .category-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
  }
  .category-card .cat-img {
    position: relative;
    overflow: hidden;
    height: 220px;
    background-color: #e8edf3;
  }
  .category-card .cat-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
  }
  .category-card:hover .cat-img img {
    transform: scale(1.06);
  }
  .category-card .cat-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(8,26,44,0.55));
  }
  .category-card .cat-body {
    padding: 28px 28px 32px;
    flex: 1;
    display: flex;
    flex-direction: column;
  }
  .category-card .cat-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-light);
    padding: 4px 12px;
    border-radius: 999px;
    align-self: flex-start;
    margin-bottom: 14px;
  }
  .category-card .cat-body h3 {
    font-size: 20px;
    margin-bottom: 10px;
  }
  .category-card .cat-body p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    flex: 1;
    margin-bottom: 18px;
  }
  .category-card .cat-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
  }
  .category-card .cat-link i {
    transition: transform 0.3s ease;
  }
  .category-card:hover .cat-link i {
    transform: translateX(4px);
  }

  /* ===== News List ===== */
  .news-section {
    background: #fff;
  }
  .news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .news-card {
    display: flex;
    gap: 20px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
  }
  .news-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
    border-color: rgba(255,107,74,0.3);
  }
  .news-card .news-img {
    width: 140px;
    height: 100px;
    border-radius: var(--radius-md);
    overflow: hidden;
    flex-shrink: 0;
    background-color: #e8edf3;
  }
  .news-card .news-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
  }
  .news-card:hover .news-img img {
    transform: scale(1.05);
  }
  .news-card .news-content {
    flex: 1;
    min-width: 0;
  }
  .news-card .news-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 8px;
  }
  .news-card .news-meta .tag {
    background: var(--accent-light);
    color: var(--accent);
    padding: 2px 10px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 12px;
  }
  .news-card .news-content h3 {
    font-size: 17px;
    margin-bottom: 6px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .news-card .news-content p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .news-section .empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 48px 0;
    color: var(--text-muted);
    background: var(--bg);
    border-radius: var(--radius-lg);
    border: 2px dashed var(--border);
  }

  /* ===== Process ===== */
  .process-section {
    background: var(--primary);
    color: #fff;
  }
  .process-section .section-header h2 {
    color: #fff;
  }
  .process-section .section-header p {
    color: rgba(255,255,255,0.7);
  }
  .process-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    position: relative;
  }
  .process-grid::before {
    content: '';
    position: absolute;
    top: 52px;
    left: 16%;
    right: 16%;
    height: 2px;
    background: linear-gradient(90deg, rgba(255,107,74,0.6), rgba(255,255,255,0.2));
    border-radius: 2px;
  }
  .process-step {
    text-align: center;
    padding: 0 16px;
    position: relative;
  }
  .process-step .step-num {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    background: var(--accent);
    color: #fff;
    font-size: 22px;
    font-weight: 800;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(255,107,74,0.35);
    position: relative;
    z-index: 2;
    border: 4px solid rgba(255,255,255,0.2);
  }
  .process-step h3 {
    color: #fff;
    font-size: 20px;
    margin-bottom: 12px;
  }
  .process-step p {
    color: rgba(255,255,255,0.7);
    font-size: 15px;
    line-height: 1.7;
  }

  /* ===== Showcase ===== */
  .showcase-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
  }
  .showcase-media {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
  }
  .showcase-media img {
    width: 100%;
    height: 420px;
    object-fit: cover;
  }
  .showcase-media::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(8,26,44,0.4));
  }
  .showcase-badge {
    position: absolute;
    left: 20px;
    bottom: 20px;
    z-index: 2;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-md);
    padding: 12px 18px;
    font-weight: 600;
    color: var(--primary);
    font-size: 14px;
    box-shadow: var(--shadow-md);
  }
  .showcase-content h2 {
    font-size: clamp(26px, 3.5vw, 36px);
    margin-bottom: 20px;
  }
  .showcase-content > p {
    color: var(--text-muted);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 32px;
  }
  .showcase-list {
    display: grid;
    gap: 16px;
  }
  .showcase-list li {
    display: flex;
    align-items: flex-start;
    gap: 14px;
  }
  .showcase-list li i {
    width: 28px;
    height: 28px;
    background: var(--accent-light);
    color: var(--accent);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    flex-shrink: 0;
    margin-top: 2px;
  }
  .showcase-list li span {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text);
  }
  .showcase-list li strong {
    display: block;
    font-size: 16px;
    color: var(--primary);
    margin-bottom: 2px;
  }

  /* ===== FAQ ===== */
  .faq-list {
    max-width: 860px;
    margin: 0 auto;
    display: grid;
    gap: 16px;
  }
  .faq-item {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: var(--transition);
  }
  .faq-item:hover {
    box-shadow: var(--shadow-md);
    border-color: rgba(255,107,74,0.2);
  }
  .faq-item h3 {
    font-size: 17px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .faq-item h3::before {
    content: 'Q';
    width: 26px;
    height: 26px;
    background: var(--primary);
    color: #fff;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }
  .faq-item p {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.7;
    padding-left: 36px;
  }

  /* ===== CTA ===== */
  .cta-section {
    position: relative;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    padding: 100px 0;
    text-align: center;
    overflow: hidden;
  }
  .cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(8,26,44,0.95), rgba(15,42,67,0.85));
  }
  .cta-section .container {
    position: relative;
    z-index: 2;
  }
  .cta-section h2 {
    color: #fff;
    font-size: clamp(28px, 4vw, 42px);
    margin-bottom: 16px;
  }
  .cta-section p {
    color: rgba(255,255,255,0.8);
    font-size: 17px;
    max-width: 560px;
    margin: 0 auto 36px;
  }
  .cta-section .btn {
    margin: 0 8px;
  }

  /* ===== Footer ===== */
  .site-footer {
    background: var(--primary-dark);
    color: rgba(255,255,255,0.75);
  }
  .site-footer .footer-main {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding: 68px 0 48px;
  }
  .site-footer h3 {
    color: #fff;
    font-size: 18px;
    margin-bottom: 16px;
  }
  .site-footer .footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    max-width: 260px;
    margin-top: 12px;
  }
  .site-footer h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 16px;
  }
  .site-footer ul {
    display: grid;
    gap: 10px;
  }
  .site-footer ul a {
    font-size: 14px;
    color: rgba(255,255,255,0.65);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
  }
  .site-footer ul a:hover {
    color: var(--accent);
    transform: translateX(4px);
  }
  .site-footer ul a i {
    font-size: 12px;
  }
  .footer-contact p {
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255,255,255,0.65);
    margin-bottom: 10px;
  }
  .footer-contact p i {
    color: var(--accent);
    width: 16px;
    text-align: center;
  }
  .footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.12);
    padding: 24px 0;
    text-align: center;
    font-size: 14px;
    color: rgba(255,255,255,0.45);
  }

  /* ===== Responsive ===== */
  @media (max-width: 1024px) {
    .feature-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .category-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .showcase-grid {
      grid-template-columns: 1fr;
      gap: 40px;
    }
    .showcase-media img {
      height: 340px;
    }
    .site-footer .footer-main {
      grid-template-columns: repeat(2, 1fr);
    }
    .search-box {
      display: none;
    }
  }
  @media (max-width: 768px) {
    .section {
      padding: 64px 0;
    }
    .main-nav {
      display: none;
      position: absolute;
      top: 72px;
      left: 0;
      right: 0;
      background: #fff;
      border-bottom: 1px solid var(--border);
      box-shadow: var(--shadow-md);
      flex-direction: column;
      padding: 16px 24px;
      gap: 6px;
      align-items: stretch;
    }
    .main-nav.open {
      display: flex;
    }
    .main-nav a {
      padding: 14px 18px;
      border-radius: 10px;
    }
    .menu-toggle {
      display: flex;
    }
    .header-cta {
      display: none;
    }
    .hero {
      min-height: 520px;
    }
    .hero .container {
      padding-top: 96px;
      padding-bottom: 96px;
    }
    .hero-stats {
      gap: 24px;
    }
    .category-grid {
      grid-template-columns: 1fr;
    }
    .news-grid {
      grid-template-columns: 1fr;
    }
    .news-card {
      flex-direction: column;
    }
    .news-card .news-img {
      width: 100%;
      height: 180px;
    }
    .process-grid {
      grid-template-columns: 1fr;
      gap: 48px;
    }
    .process-grid::before {
      display: none;
    }
    .faq-item p {
      padding-left: 0;
      margin-top: 8px;
    }
    .site-footer .footer-main {
      grid-template-columns: 1fr;
      gap: 32px;
      padding: 48px 0 32px;
    }
  }
  @media (max-width: 520px) {
    .container {
      padding: 0 18px;
    }
    .brand-text {
      font-size: 15px;
    }
    .feature-grid {
      grid-template-columns: 1fr;
    }
    .hero h1 {
      font-size: 32px;
    }
    .hero p {
      font-size: 15px;
    }
    .hero-stats {
      flex-direction: column;
      gap: 16px;
    }
    .hero-actions .btn {
      width: 100%;
    }
    .btn {
      padding: 12px 22px;
      font-size: 14px;
    }
    .category-card .cat-img {
      height: 180px;
    }
  }

/* roulang page: category1 */
/* ============ 设计变量 ============ */
  :root {
    --primary: #0c1b33;
    --primary-light: #142a4d;
    --primary-lighter: #1d3a6b;
    --secondary: #ffb800;
    --accent: #ff8a00;
    --bg: #f4f6fb;
    --bg-dark: #0c1b33;
    --bg-light: #f8f9fd;
    --card-bg: #ffffff;
    --text: #161b2d;
    --text-muted: #6a7285;
    --text-light: #9aa3b5;
    --border: #e8ebf2;
    --radius-sm: 10px;
    --radius: 16px;
    --radius-lg: 24px;
    --shadow-sm: 0 4px 16px rgba(12, 27, 51, 0.06);
    --shadow: 0 12px 40px rgba(12, 27, 51, 0.08);
    --shadow-lg: 0 24px 70px rgba(12, 27, 51, 0.14);
    --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    --transition: all 0.3s ease;
    --header-h: 76px;
  }

  /* ============ 基础 Reset ============ */
  *,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
  }
  body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
  }
  body.nav-open {
    overflow: hidden;
  }
  img {
    max-width: 100%;
    height: auto;
    display: block;
  }
  a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
  }
  button,
  input {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
    background: none;
  }
  ul,
  ol {
    list-style: none;
  }
  h1,
  h2,
  h3,
  h4 {
    line-height: 1.3;
    font-weight: 700;
  }

  /* ============ 容器 ============ */
  .container {
    width: min(1200px, 92%);
    margin: 0 auto;
  }

  /* ============ 页头导航 ============ */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(12, 27, 51, 0.92);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    transition: var(--transition);
  }
  .header-inner {
    display: flex;
    align-items: center;
    gap: 28px;
    height: var(--header-h);
  }
  .brand {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }
  .brand-icon {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    color: #0c1b33;
    font-size: 18px;
    font-weight: 900;
    border-radius: 12px;
    box-shadow: 0 4px 14px rgba(255, 184, 0, 0.35);
  }
  .brand-text {
    color: #fff;
    font-size: 17px;
    font-weight: 700;
    letter-spacing: 0.3px;
    white-space: nowrap;
  }
  .brand-text span {
    color: var(--secondary);
  }
  .main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
    flex-wrap: wrap;
  }
  .main-nav a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #b7c1d4;
    font-size: 14px;
    font-weight: 500;
    padding: 9px 16px;
    border-radius: 999px;
    transition: var(--transition);
    white-space: nowrap;
  }
  .main-nav a i {
    font-size: 12px;
    opacity: 0.75;
  }
  .main-nav a:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
  }
  .main-nav a.active {
    color: #0c1b33;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    box-shadow: 0 4px 16px rgba(255, 184, 0, 0.32);
    font-weight: 600;
  }
  .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 8px 14px;
    border-radius: 999px;
    color: #b7c1d4;
    transition: var(--transition);
  }
  .search-box:focus-within {
    border-color: var(--secondary);
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 0 0 3px rgba(255, 184, 0, 0.15);
  }
  .search-box input {
    width: 130px;
    color: #fff;
    font-size: 13px;
    background: transparent;
    transition: width 0.3s;
  }
  .search-box input::placeholder {
    color: #7d8aa0;
  }
  .search-box input:focus {
    width: 170px;
  }
  .search-kbd {
    font-size: 11px;
    color: #7d8aa0;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 6px;
    padding: 1px 6px;
    font-family: inherit;
  }
  .header-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    color: #0c1b33;
    font-size: 13px;
    font-weight: 700;
    padding: 9px 20px;
    border-radius: 999px;
    box-shadow: 0 4px 18px rgba(255, 184, 0, 0.3);
    transition: var(--transition);
    white-space: nowrap;
  }
  .header-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(255, 184, 0, 0.45);
  }
  .nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.06);
    cursor: pointer;
  }
  .nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: var(--transition);
  }

  /* ============ 移动端导航 ============ */
  @media (max-width: 1024px) {
    .main-nav {
      position: fixed;
      top: var(--header-h);
      left: 0;
      right: 0;
      background: #101e38;
      flex-direction: column;
      align-items: stretch;
      padding: 16px 24px 28px;
      gap: 6px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
      transform: translateY(-140%);
      opacity: 0;
      visibility: hidden;
      transition: var(--transition);
      z-index: 99;
    }
    .main-nav.open {
      transform: translateY(0);
      opacity: 1;
      visibility: visible;
    }
    .main-nav a {
      padding: 13px 16px;
      font-size: 15px;
      border-radius: 12px;
      justify-content: flex-start;
    }
    .nav-toggle {
      display: inline-flex;
    }
    .search-box {
      display: none;
    }
    .header-cta {
      display: none;
    }
  }
  @media (max-width: 520px) {
    :root {
      --header-h: 68px;
    }
    .header-inner {
      gap: 12px;
    }
    .brand-text {
      font-size: 14px;
    }
    .brand-icon {
      width: 34px;
      height: 34px;
      font-size: 16px;
      border-radius: 10px;
    }
  }

  /* ============ 页面 Hero ============ */
  .page-hero {
    position: relative;
    padding: 100px 0 80px;
    background: linear-gradient(135deg, rgba(12, 27, 51, 0.93), rgba(20, 42, 77, 0.88)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    color: #fff;
    overflow: hidden;
  }
  .page-hero::after {
    content: '';
    position: absolute;
    right: -120px;
    top: 20%;
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(255, 184, 0, 0.16), transparent 70%);
    pointer-events: none;
  }
  .hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 50px;
    align-items: center;
  }
  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 184, 0, 0.12);
    border: 1px solid rgba(255, 184, 0, 0.35);
    color: var(--secondary);
    font-size: 13px;
    font-weight: 600;
    padding: 7px 18px;
    border-radius: 999px;
    margin-bottom: 22px;
    backdrop-filter: blur(6px);
  }
  .hero-badge i {
    font-size: 11px;
  }
  .page-hero h1 {
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
  }
  .page-hero h1 span {
    color: var(--secondary);
  }
  .hero-desc {
    font-size: 17px;
    color: #b7c1d4;
    max-width: 560px;
    margin-bottom: 32px;
    line-height: 1.8;
  }
  .hero-btns {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: center;
  }
  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    color: #0c1b33;
    font-weight: 700;
    font-size: 15px;
    padding: 14px 32px;
    border-radius: 999px;
    box-shadow: 0 8px 28px rgba(255, 184, 0, 0.35);
    transition: var(--transition);
  }
  .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 40px rgba(255, 184, 0, 0.45);
  }
  .btn-text {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #e9edf5;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.25);
    padding: 14px 28px;
    border-radius: 999px;
    transition: var(--transition);
    backdrop-filter: blur(4px);
  }
  .btn-text:hover {
    border-color: var(--secondary);
    color: var(--secondary);
  }
  .hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: 28px;
    backdrop-filter: blur(10px);
  }
  .hero-stats .stat-value {
    font-size: 30px;
    font-weight: 800;
    color: var(--secondary);
  }
  .hero-stats .stat-label {
    font-size: 13px;
    color: #b7c1d4;
    margin-top: 4px;
  }

  /* ============ 通用板块 ============ */
  .section {
    padding: 84px 0;
  }
  .section-alt {
    background: var(--bg-light);
  }
  .section-dark {
    background: var(--bg-dark);
    color: #fff;
  }
  .section-head {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 56px;
  }
  .section-head .tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    background: rgba(255, 138, 0, 0.08);
    border: 1px solid rgba(255, 138, 0, 0.2);
    padding: 6px 18px;
    border-radius: 999px;
    margin-bottom: 14px;
  }
  .section-head h2 {
    font-size: clamp(28px, 3.6vw, 38px);
    font-weight: 800;
    color: #0c1b33;
    line-height: 1.3;
    margin-bottom: 14px;
  }
  .section-dark .section-head h2 {
    color: #fff;
  }
  .section-head p {
    color: var(--text-muted);
    font-size: 16px;
    line-height: 1.8;
  }
  .section-dark .section-head p {
    color: #9aa3b5;
  }

  /* ============ 登录前准备 ============ */
  .prepare-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }
  .feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px 30px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
  }
  .feature-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
  }
  .feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
    border-color: rgba(255, 184, 0, 0.25);
  }
  .feature-card:hover::before {
    transform: scaleX(1);
  }
  .feature-icon {
    width: 52px;
    height: 52px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(255, 184, 0, 0.15), rgba(255, 138, 0, 0.12));
    color: var(--accent);
    font-size: 20px;
    border-radius: 16px;
    margin-bottom: 20px;
  }
  .feature-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
  }
  .feature-card p {
    color: var(--text-muted);
    font-size: 14.5px;
    line-height: 1.8;
  }

  /* ============ 登录流程 ============ */
  .flow-section {
    background: var(--bg-dark);
    color: #fff;
    position: relative;
    overflow: hidden;
  }
  .flow-section::before {
    content: '';
    position: absolute;
    left: -80px;
    bottom: -120px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 184, 0, 0.08), transparent 70%);
    pointer-events: none;
  }
  .flow-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 26px;
    counter-reset: step;
  }
  .step-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: 32px 26px;
    position: relative;
    transition: var(--transition);
  }
  .step-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 184, 0, 0.3);
    transform: translateY(-4px);
  }
  .step-card .step-num {
    font-size: 44px;
    font-weight: 900;
    color: rgba(255, 184, 0, 0.25);
    line-height: 1;
    margin-bottom: 16px;
    font-family: "Arial Black", sans-serif;
  }
  .step-card h3 {
    font-size: 17px;
    margin-bottom: 10px;
    color: #fff;
  }
  .step-card p {
    color: #9aa3b5;
    font-size: 14px;
    line-height: 1.8;
  }
  .step-card .step-tag {
    display: inline-block;
    margin-top: 14px;
    background: rgba(255, 184, 0, 0.15);
    color: var(--secondary);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 999px;
    letter-spacing: 0.5px;
  }

  /* ============ 登录方式 ============ */
  .methods-wrapper {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 50px;
    align-items: center;
  }
  .methods-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
  }
  .methods-image img {
    width: 100%;
    height: 460px;
    object-fit: cover;
    transition: transform 0.6s ease;
  }
  .methods-image:hover img {
    transform: scale(1.03);
  }
  .methods-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 55%, rgba(12, 27, 51, 0.5));
    pointer-events: none;
  }
  .methods-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .method-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px 22px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
  }
  .method-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-4px);
    border-color: rgba(255, 184, 0, 0.3);
  }
  .method-card .method-icon {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    color: #0c1b33;
    font-size: 17px;
    margin-bottom: 16px;
  }
  .method-card h3 {
    font-size: 16px;
    margin-bottom: 6px;
  }
  .method-card p {
    color: var(--text-muted);
    font-size: 13.5px;
    line-height: 1.7;
  }
  .method-card .method-badge {
    display: inline-block;
    background: rgba(255, 138, 0, 0.08);
    color: var(--accent);
    font-size: 11px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 999px;
    margin-top: 10px;
  }

  /* ============ 安全体系 ============ */
  .security-section {
    background: var(--bg-light);
  }
  .security-wrapper {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 50px;
    align-items: center;
  }
  .security-content h2 {
    font-size: clamp(26px, 3vw, 34px);
    font-weight: 800;
    margin-bottom: 14px;
    color: #0c1b33;
  }
  .security-content > p {
    color: var(--text-muted);
    font-size: 15.5px;
    line-height: 1.8;
    margin-bottom: 28px;
  }
  .security-list {
    display: flex;
    flex-direction: column;
    gap: 18px;
  }
  .security-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    transition: var(--transition);
  }
  .security-item:hover {
    box-shadow: var(--shadow-sm);
  }
  .security-item .sec-icon {
    flex-shrink: 0;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 184, 0, 0.12);
    color: var(--accent);
    font-size: 15px;
  }
  .security-item .sec-text h4 {
    font-size: 15.5px;
    margin-bottom: 4px;
  }
  .security-item .sec-text p {
    font-size: 13.5px;
    color: var(--text-muted);
    line-height: 1.6;
  }
  .security-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    position: relative;
  }
  .security-image img {
    width: 100%;
    height: 480px;
    object-fit: cover;
  }
  .security-image .image-badge {
    position: absolute;
    left: 20px;
    bottom: 20px;
    right: 20px;
    background: rgba(12, 27, 51, 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius);
    padding: 18px 22px;
    color: #fff;
  }
  .security-image .image-badge strong {
    color: var(--secondary);
    display: block;
    font-size: 16px;
    margin-bottom: 4px;
  }
  .security-image .image-badge span {
    font-size: 13px;
    color: #b7c1d4;
  }

  /* ============ 异常排查 ============ */
  .trouble-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .trouble-card {
    display: flex;
    gap: 18px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px;
    transition: var(--transition);
  }
  .trouble-card:hover {
    box-shadow: var(--shadow);
    border-color: rgba(255, 138, 0, 0.2);
    transform: translateY(-3px);
  }
  .trouble-card .trouble-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(255, 184, 0, 0.14), rgba(255, 138, 0, 0.1));
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 17px;
  }
  .trouble-card h3 {
    font-size: 16px;
    margin-bottom: 6px;
  }
  .trouble-card p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.7;
  }
  .trouble-card .trouble-solution {
    display: inline-block;
    background: rgba(12, 27, 51, 0.04);
    color: var(--primary);
    font-size: 12.5px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 999px;
    margin-top: 10px;
  }

  /* ============ FAQ ============ */
  .faq-wrap {
    max-width: 860px;
    margin: 0 auto;
  }
  .faq-item {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--transition);
  }
  .faq-item.open {
    border-color: rgba(255, 184, 0, 0.3);
    box-shadow: var(--shadow-sm);
  }
  .faq-item button {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
    text-align: left;
    padding: 20px 24px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
  }
  .faq-item button .faq-icon {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: rgba(255, 184, 0, 0.12);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 13px;
    transition: transform 0.3s;
  }
  .faq-item.open button .faq-icon {
    transform: rotate(45deg);
  }
  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
  }
  .faq-answer div {
    padding: 0 24px 22px;
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.85;
    border-top: 1px solid var(--border);
    padding-top: 18px;
    margin: 0 24px 0 24px;
    padding-left: 0;
    padding-right: 0;
  }

  /* ============ CTA ============ */
  .cta-section {
    background: linear-gradient(135deg, #0c1b33, #142a4d);
    position: relative;
    overflow: hidden;
  }
  .cta-section::before {
    content: '';
    position: absolute;
    right: -100px;
    top: -100px;
    width: 340px;
    height: 340px;
    background: radial-gradient(circle, rgba(255, 184, 0, 0.18), transparent 70%);
  }
  .cta-box {
    position: relative;
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
    padding: 40px 0;
  }
  .cta-box h2 {
    font-size: clamp(28px, 3.4vw, 38px);
    color: #fff;
    font-weight: 800;
    margin-bottom: 14px;
  }
  .cta-box p {
    color: #b7c1d4;
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 32px;
  }
  .cta-btns {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
  }
  .cta-btns .btn-primary {
    font-size: 15px;
    padding: 15px 36px;
  }
  .cta-phone {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 999px;
    padding: 14px 30px;
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
  }
  .cta-phone:hover {
    border-color: var(--secondary);
    color: var(--secondary);
  }

  /* ============ 页脚 ============ */
  .site-footer {
    background: #091427;
    color: #8a94a7;
    padding: 70px 0 0;
  }
  .footer-main {
    display: grid;
    grid-template-columns: 1.3fr 1fr 1fr 1.1fr;
    gap: 40px;
    padding-bottom: 48px;
  }
  .footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    margin-top: 14px;
    color: #7d8aa0;
  }
  .footer-main h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 18px;
    font-weight: 600;
  }
  .footer-main ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }
  .footer-main ul a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #8a94a7;
    font-size: 14px;
    transition: var(--transition);
  }
  .footer-main ul a i {
    font-size: 11px;
    color: var(--accent);
    opacity: 0.7;
  }
  .footer-main ul a:hover {
    color: var(--secondary);
    padding-left: 4px;
  }
  .footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    margin-bottom: 12px;
    color: #8a94a7;
  }
  .footer-contact p i {
    color: var(--secondary);
    width: 16px;
    text-align: center;
  }
  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 22px 0;
    text-align: center;
    font-size: 13px;
    color: #5d6b80;
  }

  /* ============ 响应式断点 ============ */
  @media (max-width: 1024px) {
    .hero-grid {
      grid-template-columns: 1fr;
      gap: 36px;
    }
    .prepare-grid {
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .flow-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .methods-wrapper {
      grid-template-columns: 1fr;
    }
    .methods-image img {
      height: 380px;
    }
    .security-wrapper {
      grid-template-columns: 1fr;
    }
    .security-image img {
      height: 400px;
    }
    .footer-main {
      grid-template-columns: 1fr 1fr;
      gap: 28px;
    }
    .container {
      width: 94%;
    }
  }
  @media (max-width: 768px) {
    .section {
      padding: 64px 0;
    }
    .prepare-grid {
      grid-template-columns: 1fr;
    }
    .hero-stats {
      grid-template-columns: repeat(3, 1fr);
      padding: 20px;
    }
    .hero-stats .stat-value {
      font-size: 22px;
    }
    .trouble-grid {
      grid-template-columns: 1fr;
    }
    .methods-list {
      grid-template-columns: 1fr;
    }
    .footer-main {
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .footer-contact {
      grid-column: 1 / -1;
    }
  }
  @media (max-width: 520px) {
    .page-hero {
      padding: 64px 0 50px;
    }
    .section {
      padding: 52px 0;
    }
    .page-hero h1 {
      font-size: 30px;
    }
    .hero-stats {
      grid-template-columns: 1fr 1fr 1fr;
      gap: 10px;
      padding: 16px;
    }
    .hero-stats .stat-value {
      font-size: 19px;
    }
    .flow-grid {
      grid-template-columns: 1fr;
    }
    .footer-main {
      grid-template-columns: 1fr;
    }
    .footer-contact {
      grid-column: auto;
    }
    .brand-text {
      font-size: 13px;
    }
    .hero-btns .btn-primary,
    .hero-btns .btn-text {
      width: 100%;
      justify-content: center;
    }
  }

  /* 可访问性 */
  a:focus-visible,
  button:focus-visible {
    outline: 3px solid rgba(255, 184, 0, 0.5);
    outline-offset: 3px;
  }
  .section-dark .section-head h2 {
    color: #fff;
  }

/* roulang page: article */
:root {
  --primary: #1a5cff;
  --primary-dark: #0f3fd6;
  --accent: #f5a623;
  --accent-dark: #df8c0a;
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1a2233;
  --text-weak: #6b7a90;
  --border: #e8ecf2;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 6px 24px rgba(26,34,51,.08);
  --shadow-lg: 0 16px 40px rgba(26,34,51,.12);
  --container: 1200px;
  --transition: .25s ease;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  margin: 0;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: var(--primary); transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.site-header {
  background: rgba(255,255,255,.93);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 12px rgba(26,34,51,.04);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 74px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-weight: 800;
  font-size: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(26,92,255,.3);
}
.brand-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: .5px;
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}
.main-nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  transition: all var(--transition);
  white-space: nowrap;
}
.main-nav a i { font-size: 12px; opacity: .8; }
.main-nav a:hover { background: #f1f5fe; color: var(--primary); }
.main-nav a.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(26,92,255,.28);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.search-box {
  display: flex;
  align-items: center;
  background: #f3f5f9;
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 7px 14px;
  width: 180px;
  transition: all .35s;
}
.search-box:focus-within {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(26,92,255,.12);
  width: 210px;
}
.search-box i { color: var(--text-weak); font-size: 13px; margin-right: 7px; }
.search-box input {
  border: none;
  outline: none;
  background: transparent;
  font-size: 13px;
  width: 100%;
  color: var(--text);
}
.nav-toggle {
  display: none;
  background: #f3f5f9;
  border: 1px solid var(--border);
  width: 38px;
  height: 38px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text);
  font-size: 15px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.4;
  text-align: center;
}
.btn-primary {
  background: var(--primary);
  color: #fff !important;
  box-shadow: 0 4px 16px rgba(26,92,255,.25);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(26,92,255,.35);
}
.btn-accent {
  background: var(--accent);
  color: #1a2233 !important;
  box-shadow: 0 4px 16px rgba(245,166,35,.25);
}
.btn-accent:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245,166,35,.35);
}
.btn-light {
  background: #fff;
  color: var(--primary) !important;
  border-color: #e3e8f0;
}
.btn-light:hover { background: #f1f5fe; transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: rgba(26,92,255,.08); }
.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-lg { padding: 14px 32px; font-size: 16px; }
.btn-block { width: 100%; }
.article-hero {
  position: relative;
  padding: 72px 0 52px;
  background-size: cover;
  background-position: center;
  color: #fff;
  border-bottom: 4px solid var(--primary);
  background-color: #0a1220;
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,18,45,.9), rgba(26,92,255,.74));
}
.article-hero .container { position: relative; z-index: 1; }
.article-hero h1 {
  font-size: 36px;
  line-height: 1.3;
  max-width: 920px;
  font-weight: 800;
  margin: 18px 0 14px;
  text-shadow: 0 2px 20px rgba(0,0,0,.15);
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 14px;
  opacity: .92;
}
.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(255,255,255,.12);
  backdrop-filter: blur(8px);
  padding: 5px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.15);
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  opacity: .88;
  margin-bottom: 6px;
}
.breadcrumb a { color: #fff; opacity: .68; transition: all .3s; }
.breadcrumb a:hover { opacity: 1; color: var(--accent); }
.breadcrumb i { font-size: 11px; opacity: .6; }
.page-hero {
  background: linear-gradient(135deg, #0a1220, #173a7a);
  padding: 80px 0;
  color: #fff;
  text-align: center;
  border-bottom: 4px solid var(--primary);
}
.page-hero h1 { font-size: 34px; font-weight: 800; margin: 0 0 8px; }
.page-hero p { font-size: 16px; opacity: .8; margin: 0; }
.article-section {
  padding: 56px 0 48px;
  background: var(--bg);
}
.article-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 40px;
  align-items: start;
}
.article-main { min-width: 0; }
.article-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 44px;
  border: 1px solid var(--border);
}
.article-content {
  font-size: 16px;
  line-height: 1.9;
  color: #33404f;
}
.article-content h2,
.article-content h3,
.article-content h4 {
  color: var(--text);
  font-weight: 700;
  margin: 30px 0 14px;
  line-height: 1.4;
}
.article-content h2 {
  font-size: 24px;
  border-left: 4px solid var(--primary);
  padding-left: 14px;
  border-radius: 0 4px 4px 0;
  background: linear-gradient(to right, rgba(26,92,255,.05), transparent);
}
.article-content h3 { font-size: 20px; }
.article-content p { margin: 14px 0; }
.article-content ul, .article-content ol { margin: 14px 0; padding-left: 24px; }
.article-content ul li, .article-content ol li { margin: 6px 0; }
.article-content a { text-decoration: underline; text-underline-offset: 3px; }
.article-content blockquote {
  border-left: 4px solid var(--accent);
  background: #fff9f0;
  padding: 16px 20px;
  border-radius: 0 12px 12px 0;
  margin: 22px 0;
  color: #6a5b3c;
  font-size: 15px;
}
.article-content img {
  border-radius: 12px;
  margin: 22px 0;
  box-shadow: var(--shadow);
  height: auto;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 14px;
}
.article-content table th,
.article-content table td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}
.article-content table th { background: #f1f5fe; font-weight: 600; }
.article-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 36px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
}
.tag-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-weak);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-right: 4px;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #f1f5fe;
  color: var(--primary);
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid #dbe5fe;
  cursor: default;
  transition: all var(--transition);
}
.tag:hover {
  background: #e3ecfe;
  border-color: var(--primary);
  transform: translateY(-1px);
}
.not-found-box {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  padding: 68px 40px;
  border: 1px solid var(--border);
}
.not-found-box i {
  color: var(--primary);
  opacity: .35;
  margin-bottom: 18px;
}
.not-found-box h2 {
  font-size: 28px;
  font-weight: 800;
  margin: 0 0 10px;
}
.not-found-box p {
  color: var(--text-weak);
  margin-bottom: 24px;
  font-size: 15px;
}
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.sidebar-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 26px;
  border: 1px solid var(--border);
}
.sidebar-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-card h3 i { color: var(--primary); font-size: 16px; }
.sidebar-info-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 7px 0;
  font-size: 14px;
  border-bottom: 1px dashed var(--border);
}
.sidebar-info-item:last-child { border-bottom: none; }
.sidebar-info-item .label { color: var(--text-weak); }
.sidebar-info-item .value { font-weight: 600; color: var(--text); }
.sidebar-platform p {
  font-size: 14px;
  line-height: 1.85;
  color: #465467;
  margin: 0;
}
.sidebar-platform .sidebar-cta { margin-top: 18px; }
.sidebar-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.sidebar-list li { margin-bottom: 2px; }
.sidebar-list li a {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 0;
  font-size: 14px;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
  line-height: 1.5;
}
.sidebar-list li a:hover { color: var(--primary); padding-left: 6px; }
.sidebar-list li a i { color: var(--primary); font-size: 12px; margin-top: 5px; flex-shrink: 0; }
.sidebar-list li:last-child a { border-bottom: none; }
.related-section {
  padding: 64px 0 40px;
  background: #fff;
  border-top: 1px solid var(--border);
}
.section-head {
  text-align: center;
  margin-bottom: 40px;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 800;
  margin: 0 0 8px;
  color: var(--text);
}
.section-head p {
  color: var(--text-weak);
  font-size: 16px;
  margin: 0;
}
.section-head .section-bar {
  width: 56px;
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  margin: 14px auto 0;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.related-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform .3s ease, box-shadow .3s ease;
  display: flex;
  flex-direction: column;
}
.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(26,92,255,.25);
}
.related-cover {
  height: 170px;
  background-size: cover;
  background-position: center;
  position: relative;
}
.related-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.32), transparent 60%);
}
.related-cat {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(255,255,255,.92);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  z-index: 2;
  backdrop-filter: blur(6px);
}
.related-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.related-body h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
  margin: 0 0 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 51px;
}
.related-body h3:hover { color: var(--primary); }
.related-body p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  margin: 0 0 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-date {
  font-size: 13px;
  color: var(--text-weak);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
}
.related-empty {
  text-align: center;
  padding: 40px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
  color: var(--text-weak);
}
.faq-section {
  padding: 64px 0;
  background: var(--bg);
}
.faq-grid {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0 22px;
  overflow: hidden;
  transition: all var(--transition);
  box-shadow: 0 2px 10px rgba(26,34,51,.03);
}
.faq-item:hover { border-color: rgba(26,92,255,.4); box-shadow: var(--shadow); }
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 16px;
  color: var(--text);
  padding: 18px 0;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.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: 13px;
  color: var(--primary);
  transition: transform var(--transition), color var(--transition);
}
.faq-item[open] summary { border-bottom: 1px solid var(--border); }
.faq-item[open] summary::after { transform: rotate(180deg); color: var(--accent); }
.faq-item p {
  padding: 10px 0 18px;
  margin: 0;
  font-size: 15px;
  color: #465467;
  line-height: 1.85;
}
.cta-section {
  position: relative;
  padding: 80px 0;
  background-size: cover;
  background-position: center;
  text-align: center;
  color: #fff;
  background-color: #0a1220;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,18,45,.92), rgba(26,92,255,.78));
}
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 {
  font-size: 34px;
  font-weight: 800;
  margin: 0 0 14px;
  line-height: 1.3;
}
.cta-section p {
  font-size: 17px;
  opacity: .9;
  max-width: 620px;
  margin: 0 auto 34px;
  line-height: 1.7;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.site-footer {
  background: #0a1220;
  color: #9aa7b8;
  padding: 56px 0 0;
}
.site-footer .footer-main {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 36px;
}
.site-footer h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.site-footer h4::before {
  content: '';
  width: 18px;
  height: 3px;
  border-radius: 2px;
  background: var(--accent);
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer ul li { margin-bottom: 10px; }
.site-footer ul li a {
  color: #9aa7b8;
  font-size: 14px;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.site-footer ul li a i { font-size: 12px; color: var(--accent); }
.site-footer ul li a:hover { color: #fff; padding-left: 4px; }
.site-footer p {
  font-size: 14px;
  margin: 8px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.site-footer p i { color: var(--accent); width: 18px; text-align: center; }
.site-footer .footer-brand p {
  margin-top: 12px;
  line-height: 1.8;
  opacity: .85;
  padding-right: 12px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 18px 0;
  text-align: center;
  font-size: 13px;
  color: #6f7d90;
}
@media (max-width: 1024px) {
  .article-grid { grid-template-columns: 1fr; gap: 28px; }
  .article-sidebar { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .site-footer .footer-main { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 10px;
    padding: 12px 16px;
    min-height: auto;
  }
  .main-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    background: #fff;
    border-top: 1px solid var(--border);
    padding: 12px 0;
    order: 4;
  }
  .main-nav.open { display: flex; }
  .main-nav a { border-radius: 10px; padding: 12px 16px; justify-content: flex-start; }
  .nav-toggle { display: inline-flex; }
  .search-box { display: none; }
  .header-actions .btn-primary { display: none; }
  .article-hero { padding: 52px 0 38px; }
  .article-hero h1 { font-size: 27px; }
  .article-card { padding: 26px 22px; }
  .article-sidebar { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .related-cover { height: 160px; }
  .faq-grid { padding: 0 4px; }
  .cta-section h2 { font-size: 28px; }
  .site-footer .footer-main { grid-template-columns: 1fr 1fr; gap: 26px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .brand-text { font-size: 17px; }
  .brand-icon { width: 34px; height: 34px; font-size: 16px; }
  .article-hero h1 { font-size: 23px; }
  .article-meta { gap: 10px; font-size: 13px; }
  .article-card { padding: 20px 16px; }
  .article-content { font-size: 15px; line-height: 1.85; }
  .article-content h2 { font-size: 20px; }
  .section-head h2 { font-size: 24px; }
  .cta-section { padding: 56px 0; }
  .cta-section h2 { font-size: 24px; }
  .cta-section p { font-size: 15px; }
  .cta-actions { flex-direction: column; align-items: stretch; }
  .cta-actions .btn { width: 100%; }
  .site-footer .footer-main { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { font-size: 12px; padding: 16px 12px; }
}

/* roulang page: category2 */
:root {
    --primary: #1756d9;
    --primary-dark: #0f3f9e;
    --accent: #08bd80;
    --bg: #f5f8fd;
    --bg-deep: #0b1530;
    --card-bg: #ffffff;
    --text: #0b1530;
    --text-light: #5a6b8c;
    --border: #e3eaf5;
    --radius: 18px;
    --radius-sm: 12px;
    --shadow: 0 12px 40px rgba(9, 30, 66, 0.08);
    --shadow-hover: 0 20px 48px rgba(9, 30, 66, 0.14);
    --maxw: 1200px;
    --transition: all .3s cubic-bezier(.4,0,.2,1);
  }
  
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
  
  body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
  }
  
  img { max-width: 100%; display: block; }
  a { text-decoration: none; color: inherit; transition: var(--transition); }
  ul, ol { list-style: none; }
  
  .container {
    width: 100%;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 24px;
  }
  
  /* ===== Header ===== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(227, 234, 245, 0.9);
    transition: var(--transition);
  }
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    height: 72px;
  }
  .brand {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }
  .brand-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    font-size: 20px;
    font-weight: 800;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(23, 86, 217, 0.35);
  }
  .brand-text {
    font-size: 19px;
    font-weight: 800;
    letter-spacing: 0.5px;
    color: var(--text);
    white-space: nowrap;
  }
  .brand-text .accent { color: var(--accent); }
  
  .main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
    justify-content: center;
    overflow-x: auto;
    scrollbar-width: none;
    padding: 0 8px;
  }
  .main-nav::-webkit-scrollbar { display: none; }
  .main-nav a {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 16px;
    border-radius: 999px;
    color: var(--text-light);
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    border: 1px solid transparent;
    transition: var(--transition);
  }
  .main-nav a i { font-size: 12px; opacity: 0.85; }
  .main-nav a:hover {
    background: rgba(23, 86, 217, 0.08);
    color: var(--primary);
    border-color: rgba(23, 86, 217, 0.18);
  }
  .main-nav a.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 8px 20px rgba(23, 86, 217, 0.3);
  }
  
  .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
  }
  .search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #f1f5fb;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 8px 14px;
    width: 190px;
    transition: var(--transition);
  }
  .search-box:focus-within {
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(23, 86, 217, 0.1);
  }
  .search-box i { color: var(--text-light); font-size: 14px; }
  .search-box input {
    border: none;
    outline: none;
    background: transparent;
    font-size: 13px;
    width: 100%;
    color: var(--text);
  }
  .search-box input::placeholder { color: #9aa8c3; }
  
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    font-size: 14px;
    border-radius: 12px;
    padding: 11px 22px;
    border: 1px solid transparent;
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition);
  }
  .btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 8px 22px rgba(23, 86, 217, 0.3);
  }
  .btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(23, 86, 217, 0.38);
  }
  .btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: rgba(23, 86, 217, 0.3);
  }
  .btn-outline:hover {
    background: rgba(23, 86, 217, 0.06);
    border-color: var(--primary);
  }
  .btn-accent {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 8px 22px rgba(8, 189, 128, 0.3);
  }
  .btn-accent:hover {
    background: #079c6a;
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(8, 189, 128, 0.38);
  }
  .btn-lg { padding: 15px 34px; font-size: 16px; border-radius: 14px; }
  .btn-sm { padding: 9px 16px; font-size: 13px; border-radius: 10px; }
  
  .nav-toggle {
    display: none;
    background: #f1f5fb;
    border: 1px solid var(--border);
    border-radius: 10px;
    width: 42px;
    height: 42px;
    color: var(--text);
    font-size: 17px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
  }
  .nav-toggle:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
  
  /* ===== Page Banner ===== */
  .category-banner {
    position: relative;
    padding: 80px 0 64px;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    overflow: hidden;
  }
  .category-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(110deg, rgba(7, 16, 38, 0.94) 20%, rgba(11, 21, 48, 0.78) 50%, rgba(11, 21, 48, 0.45));
  }
  .category-banner .container { position: relative; z-index: 2; }
  
  .breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
  }
  .breadcrumb a { color: rgba(255, 255, 255, 0.85); }
  .breadcrumb a:hover { color: #fff; }
  .breadcrumb i { font-size: 11px; }
  
  /* ===== Cards ===== */
  .section { padding: 72px 0; }
  .section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 36px;
  }
  .section-head .tag-line {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(23, 86, 217, 0.08);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 999px;
    margin-bottom: 10px;
  }
  .section-title {
    font-size: 28px;
    font-weight: 800;
    line-height: 1.35;
    letter-spacing: 0.3px;
    color: var(--text);
  }
  .section-desc { color: var(--text-light); font-size: 15px; margin-top: 10px; max-width: 680px; }
  
  .match-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
  }
  .match-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(23, 86, 217, 0.25);
  }
  .match-card .cover {
    position: relative;
    height: 168px;
    overflow: hidden;
  }
  .match-card .cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
  }
  .match-card:hover .cover img { transform: scale(1.06); }
  .match-card .cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(11, 21, 48, 0.55), transparent 70%);
  }
  .match-status {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 2;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(4px);
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 999px;
  }
  .match-status.hot { color: #e5484d; }
  .match-status.soon { color: var(--accent); }
  
  .match-body { padding: 20px 20px 18px; display: flex; flex-direction: column; flex: 1; }
  .match-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; line-height: 1.45; }
  .match-meta { display: flex; flex-direction: column; gap: 6px; margin: 10px 0 16px; }
  .match-meta span { display: flex; align-items: center; gap: 8px; color: var(--text-light); font-size: 13px; }
  .match-meta span i { color: var(--primary); font-size: 12px; width: 14px; text-align: center; }
  .match-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid #f0f4fa;
  }
  .match-foot .price { font-size: 16px; font-weight: 800; color: var(--primary); }
  .match-foot .price small { color: var(--text-light); font-size: 12px; font-weight: 500; margin-left: 2px; }
  
  /* ===== Stats dark ===== */
  .stats-section {
    background: var(--bg-deep);
    position: relative;
    overflow: hidden;
    padding: 72px 0;
  }
  .stats-section::before {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(23, 86, 217, 0.3), transparent 70%);
    top: -120px;
    right: -100px;
    border-radius: 50%;
  }
  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
  }
  .stat-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    padding: 28px 20px;
    text-align: center;
    backdrop-filter: blur(8px);
    transition: var(--transition);
  }
  .stat-item:hover { background: rgba(255, 255, 255, 0.09); transform: translateY(-4px); }
  .stat-item .num {
    font-size: 34px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
  }
  .stat-item .num span { color: var(--accent); }
  .stat-item .label { color: rgba(255, 255, 255, 0.65); font-size: 14px; margin-top: 8px; }
  
  /* ===== Steps ===== */
  .steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    counter-reset: step;
  }
  .step-item {
    position: relative;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 22px 22px;
    transition: var(--transition);
  }
  .step-item:hover {
    box-shadow: var(--shadow-hover);
    border-color: rgba(23, 86, 217, 0.2);
    transform: translateY(-4px);
  }
  .step-item::before {
    counter-increment: step;
    content: "0" counter(step);
    font-size: 32px;
    font-weight: 800;
    color: rgba(23, 86, 217, 0.14);
    line-height: 1;
    display: block;
    margin-bottom: 14px;
    font-family: 'Helvetica Neue', sans-serif;
  }
  .step-item h4 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
  .step-item p { color: var(--text-light); font-size: 13.5px; line-height: 1.7; }
  
  /* ===== FAQ ===== */
  .faq-list { max-width: 860px; margin: 0 auto; }
  .faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 14px;
    overflow: hidden;
    transition: var(--transition);
  }
  .faq-item:hover { border-color: rgba(23, 86, 217, 0.3); }
  .faq-item summary {
    padding: 20px 24px;
    font-weight: 600;
    font-size: 15.5px;
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    transition: var(--transition);
  }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-item summary::after {
    content: '\f107';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--primary);
    transition: transform .3s ease;
    flex-shrink: 0;
  }
  .faq-item[open] summary::after { transform: rotate(180deg); }
  .faq-item[open] { box-shadow: var(--shadow); }
  .faq-item .faq-body {
    padding: 0 24px 20px;
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.75;
    border-top: 1px solid #f0f4fa;
    padding-top: 16px;
  }
  
  /* ===== Tags ===== */
  .sport-tags { display: flex; flex-wrap: wrap; gap: 10px; }
  .sport-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 20px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
  }
  .sport-tag i { color: var(--primary); font-size: 13px; }
  .sport-tag:hover, .sport-tag.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 6px 18px rgba(23, 86, 217, 0.25);
  }
  .sport-tag:hover i, .sport-tag.active i { color: #fff; }
  
  /* ===== CTA ===== */
  .cta-box {
    background: linear-gradient(135deg, var(--primary) 0%, #1f6fe0 55%, var(--accent) 130%);
    border-radius: 24px;
    padding: 52px 48px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
  }
  .cta-box::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(255,255,255,0.14) 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.5;
  }
  .cta-box > * { position: relative; z-index: 2; }
  .cta-box h2 { font-size: 26px; color: #fff; font-weight: 800; margin-bottom: 8px; }
  .cta-box p { color: rgba(255, 255, 255, 0.9); font-size: 15px; }
  
  /* ===== Footer ===== */
  .site-footer {
    background: var(--bg-deep);
    color: rgba(255, 255, 255, 0.75);
    padding: 56px 0 0;
    margin-top: 0;
  }
  .site-footer .footer-main {
    display: grid;
    grid-template-columns: 1.4fr 0.7fr 0.9fr 1fr;
    gap: 40px;
    padding-bottom: 36px;
  }
  .site-footer .footer-brand p { font-size: 13.5px; color: rgba(255,255,255,0.55); line-height: 1.75; margin-top: 12px; }
  .site-footer h4 {
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 18px;
    letter-spacing: 0.5px;
  }
  .site-footer ul li { margin-bottom: 10px; }
  .site-footer ul li a {
    font-size: 13.5px;
    color: rgba(255, 255, 255, 0.6);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
  }
  .site-footer ul li a i { color: var(--accent); font-size: 11px; }
  .site-footer ul li a:hover { color: #fff; padding-left: 4px; }
  .site-footer .footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13.5px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 10px;
  }
  .site-footer .footer-contact p i { color: var(--accent); width: 16px; }
  .site-footer .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 18px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
  }
  
  /* ===== Responsive ===== */
  @media (max-width: 1024px) {
    .header-inner { gap: 16px; }
    .header-actions .search-box { display: none; }
    .main-nav { justify-content: flex-start; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .steps-grid { grid-template-columns: repeat(2, 1fr); }
    .site-footer .footer-main { grid-template-columns: 1fr 1fr; }
  }
  
  @media (max-width: 768px) {
    .site-header { padding: 0; }
    .header-inner { flex-wrap: wrap; height: auto; padding: 12px 0; }
    .header-actions { margin-left: auto; }
    .main-nav {
      flex: 0 0 100%;
      justify-content: flex-start;
      padding: 8px 0 4px;
      border-top: 1px solid #f0f4fa;
      display: flex;
    }
    .main-nav a { padding: 7px 12px; font-size: 13px; }
    .nav-toggle { display: none; }
    .category-banner { padding: 56px 0 40px; }
    .section { padding: 48px 0; }
    .section-head { flex-direction: column; align-items: flex-start; }
    .section-title { font-size: 22px; }
    .cta-box { flex-direction: column; padding: 36px 24px; text-align: center; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .stat-item .num { font-size: 26px; }
    .site-footer .footer-main { grid-template-columns: 1fr; gap: 28px; }
  }
  
  @media (max-width: 520px) {
    .container { padding: 0 16px; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .stat-item { padding: 20px 12px; }
    .stat-item .num { font-size: 24px; }
    .steps-grid { grid-template-columns: 1fr; gap: 14px; }
    .match-card .cover { height: 150px; }
    .cta-box h2 { font-size: 20px; }
    .header-actions .btn { display: none; }
    .brand-text { font-size: 16px; }
    .footer-contact p { font-size: 12.5px; }
  }

/* roulang page: category3 */
@layer base {
        *,
        ::before,
        ::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: theme('fontFamily.sans');
            background-color: #ffffff;
            color: theme('colors.ink');
            line-height: 1.7;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: inline-block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid theme('colors.accent.DEFAULT');
            outline-offset: 3px;
            border-radius: 4px;
        }
        ul,
        ol {
            padding: 0;
            margin: 0;
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4 {
            line-height: 1.3;
            margin: 0 0 .5em;
            font-weight: 700;
        }
        p {
            margin: 0 0 1rem;
        }
        input,
        button {
            font-family: inherit;
        }
    }
    @layer components {
        .container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        .section {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }
        .section-head {
            max-width: 720px;
            margin-bottom: 3rem;
        }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            font-size: .78rem;
            font-weight: 600;
            letter-spacing: .12em;
            text-transform: uppercase;
            color: theme('colors.accent.hover');
            background: theme('colors.accent.soft');
            padding: .3rem .8rem;
            border-radius: 999px;
            margin-bottom: 1rem;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            font-weight: 600;
            border-radius: 999px;
            padding: .7rem 1.4rem;
            font-size: .9rem;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all .2s ease;
            white-space: nowrap;
        }
        .btn-accent {
            background: theme('colors.accent.DEFAULT');
            color: #0f172a;
            box-shadow: 0 2px 10px rgba(234, 179, 8, .28);
        }
        .btn-accent:hover {
            background: theme('colors.accent.hover');
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(234, 179, 8, .36);
        }
        .btn-dark {
            background: theme('colors.brand.900');
            color: #fff;
        }
        .btn-dark:hover {
            background: #0a1e3f;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(10, 30, 63, .25);
        }
        .btn-line {
            background: transparent;
            border-color: rgba(255, 255, 255, .35);
            color: #fff;
        }
        .btn-line:hover {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(255, 255, 255, .6);
        }
        .card {
            background: #fff;
            border-radius: 1rem;
            border: 1px solid theme('colors.line');
            box-shadow: theme('boxShadow.card');
            transition: transform .25s ease, box-shadow .25s ease, border-color .2s ease;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: theme('boxShadow.lift');
            border-color: #cbd5e1;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            font-size: .75rem;
            font-weight: 600;
            padding: .24rem .6rem;
            border-radius: 999px;
            background: theme('colors.mist');
            color: theme('colors.soft');
            border: 1px solid theme('colors.line');
        }
        .badge-primary {
            background: rgba(30, 90, 168, .1);
            color: theme('colors.brand.500');
            border-color: rgba(30, 90, 168, .15);
        }
        .badge-accent {
            background: theme('colors.accent.soft');
            color: #b45309;
            border-color: rgba(234, 179, 8, .2);
        }
        .icon-circle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 3rem;
            height: 3rem;
            border-radius: 1rem;
            font-size: 1.2rem;
            background: rgba(30, 90, 168, .08);
            color: theme('colors.brand.500');
        }
        .faq-item {
            border: 1px solid theme('colors.line');
            border-radius: 1rem;
            background: #fff;
            transition: box-shadow .2s;
            overflow: hidden;
        }
        .faq-item+.faq-item {
            margin-top: .9rem;
        }
        .faq-summary {
            cursor: pointer;
            padding: 1.1rem 1.4rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: .96rem;
            gap: 1rem;
        }
        .faq-summary i {
            color: theme('colors.soft');
            transition: transform .25s;
            font-size: .85rem;
        }
        details[open] .faq-summary i {
            transform: rotate(180deg);
            color: theme('colors.accent.hover');
        }
        .faq-body {
            padding: 0 1.4rem 1.2rem;
            color: theme('colors.soft');
            font-size: .9rem;
        }
    }