/* roulang page: index */
:root {
    --brand-50: #eef2ff;
    --brand-100: #e0e7ff;
    --brand-600: #4f46e5;
    --brand-700: #4338ca;
    --brand-800: #3730a3;
    --accent-400: #fbbf24;
    --accent-500: #f59e0b;
    --accent-600: #d97706;
    --ink-900: #0f172a;
    --ink-700: #334155;
    --ink-500: #64748b;
    --paper-50: #f8fafc;
    --paper-100: #f1f5f9;
    --white: #ffffff;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
    --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.07);
    --shadow-lg: 0 12px 36px rgba(15, 23, 42, 0.12);
    --transition: all 0.25s ease;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.65;
    color: var(--ink-900);
    background: var(--paper-50);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
  }

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

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

  ul, li {
    list-style: none;
  }

  button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
  }

  input, textarea {
    font-family: inherit;
  }

  .container {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
  }

  /* ===== 悬浮胶囊导航 ===== */
  .site-header {
    position: relative;
    z-index: 200;
  }

  .site-nav {
    position: fixed;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 32px);
    max-width: 1140px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.65);
    box-shadow: 0 6px 24px rgba(15, 23, 42, 0.08);
    border-radius: 999px;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: box-shadow 0.3s;
  }

  .site-nav.scrolled {
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.12);
  }

  .nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 16px;
  }

  .logo-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }

  .logo-badge {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, #6366f1 0%, #4338ca 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 800;
    font-size: 15px;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.35);
  }

  .logo-text {
    font-weight: 800;
    font-size: 17px;
    color: var(--ink-900);
    letter-spacing: 0.3px;
    white-space: nowrap;
  }

  .nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
  }

  .nav-link {
    padding: 8px 18px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    color: var(--ink-700);
    transition: all 0.25s ease;
    white-space: nowrap;
  }

  .nav-link:hover {
    background: var(--brand-50);
    color: var(--brand-700);
  }

  .nav-link.active {
    background: var(--brand-600);
    color: #fff;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
  }

  .nav-cta {
    padding: 9px 20px;
    border-radius: 999px;
    background: var(--accent-500);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
    transition: all 0.25s ease;
  }

  .nav-cta:hover {
    background: var(--accent-600);
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(245, 158, 11, 0.4);
  }

  .nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    background: var(--paper-100);
    transition: background 0.25s;
  }

  .nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--ink-700);
    border-radius: 2px;
    transition: all 0.3s ease;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* ===== Hero 首屏 ===== */
  .hero-section {
    position: relative;
    background:
      linear-gradient(105deg, rgba(15, 23, 42, 0.94) 0%, rgba(49, 46, 129, 0.82) 50%, rgba(67, 56, 202, 0.7) 100%),
      url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    padding: 190px 0 120px;
    color: #fff;
    overflow: hidden;
  }

  .hero-section::after {
    content: '';
    position: absolute;
    right: -120px;
    top: 60px;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.2);
    filter: blur(80px);
    pointer-events: none;
  }

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

  .hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.25);
    padding: 6px 16px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 24px;
    backdrop-filter: blur(6px);
    letter-spacing: 0.5px;
  }

  .hero-title {
    font-size: clamp(34px, 5vw, 64px);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 18px;
    max-width: 760px;
  }

  .hero-title span {
    color: #a5b4fc;
  }

  .hero-desc {
    font-size: 17px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.85);
    max-width: 600px;
    margin-bottom: 32px;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 30px;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 28px;
    border-radius: 999px;
    background: var(--brand-600);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
    transition: all 0.25s ease;
  }

  .btn-primary:hover {
    background: var(--brand-700);
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(79, 70, 229, 0.5);
  }

  .btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 28px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: #fff;
    font-size: 15px;
    font-weight: 500;
    backdrop-filter: blur(6px);
    transition: all 0.25s ease;
  }

  .btn-ghost:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.6);
  }

  .hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .hero-tags li {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.75);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.18);
    padding: 5px 14px;
    border-radius: 999px;
  }

  .hero-notice {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.18);
    padding: 10px 18px;
    border-radius: 12px;
    margin-top: 36px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
    max-width: 620px;
    backdrop-filter: blur(4px);
  }

  .hero-notice i {
    color: var(--accent-400);
  }

  /* ===== 板块 ===== */
  .section {
    padding: 88px 0;
  }

  .section-alt {
    background: var(--paper-100);
  }

  .section-dark {
    background: linear-gradient(135deg, #0f172a, #1e1b4b);
    color: #fff;
  }

  .section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 52px;
  }

  .section-eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--brand-600);
    margin-bottom: 10px;
    padding: 4px 14px;
    border-radius: 999px;
    background: var(--brand-50);
    border: 1px solid var(--brand-100);
  }

  .section-head h2 {
    font-size: clamp(28px, 3.5vw, 36px);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.5px;
    margin-bottom: 12px;
    color: var(--ink-900);
  }

  .section-head p {
    font-size: 16px;
    color: var(--ink-500);
    line-height: 1.7;
  }

  .section-dark .section-head h2 {
    color: #fff;
  }

  .section-dark .section-head p {
    color: rgba(255, 255, 255, 0.7);
  }

  .section-dark .section-eyebrow {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.12);
    color: #a5b4fc;
  }

  /* ===== 分类卡片 ===== */
  .category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .category-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--white);
    border-radius: 20px;
    border: 1px solid var(--paper-200);
    overflow: hidden;
    transition: all 0.35s ease;
    box-shadow: var(--shadow-sm);
  }

  .category-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--brand-100);
  }

  .category-card img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    transition: transform 0.45s ease;
  }

  .category-card:hover img {
    transform: scale(1.03);
  }

  .category-card-body {
    padding: 26px;
    flex: 1;
    display: flex;
    flex-direction: column;
  }

  .badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 14px;
    border-radius: 999px;
    background: var(--brand-50);
    color: var(--brand-700);
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
    align-self: flex-start;
  }

  .badge-accent {
    background: #fef3c7;
    color: #b45309;
  }

  .category-card h3 {
    font-size: 21px;
    font-weight: 700;
    color: var(--ink-900);
    line-height: 1.4;
    margin-bottom: 10px;
  }

  .category-card p {
    font-size: 14px;
    color: var(--ink-500);
    line-height: 1.7;
    margin-bottom: 18px;
  }

  .link-text {
    font-size: 14px;
    font-weight: 600;
    color: var(--brand-600);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: auto;
    transition: gap 0.3s;
  }

  .category-card:hover .link-text {
    gap: 12px;
    color: var(--brand-700);
  }

  /* ===== 特色卡片 ===== */
  .feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }

  .feature-card {
    background: var(--white);
    border-radius: 18px;
    padding: 28px 24px;
    border: 1px solid var(--paper-200);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    text-align: center;
  }

  .feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--brand-100);
  }

  .feature-icon {
    width: 54px;
    height: 54px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--brand-50), var(--brand-100));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    color: var(--brand-700);
    font-size: 22px;
    transition: all 0.3s;
  }

  .feature-card:hover .feature-icon {
    background: linear-gradient(135deg, var(--brand-600), var(--brand-800));
    color: #fff;
    transform: scale(1.05);
  }

  .feature-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--ink-900);
  }

  .feature-card p {
    font-size: 14px;
    color: var(--ink-500);
    line-height: 1.65;
  }

  /* ===== 资讯列表 ===== */
  .post-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .post-item {
    background: var(--white);
    border: 1px solid var(--paper-200);
    border-radius: 16px;
    transition: all 0.3s ease;
    overflow: hidden;
  }

  .post-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--brand-100);
  }

  .post-item .post-link {
    display: block;
    padding: 22px 26px;
  }

  .post-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 8px;
  }

  .post-category {
    display: inline-flex;
    align-items: center;
    padding: 3px 12px;
    border-radius: 999px;
    background: var(--brand-50);
    color: var(--brand-700);
    font-size: 12px;
    font-weight: 600;
  }

  .post-meta time {
    font-size: 12px;
    color: var(--ink-500);
  }

  .post-item h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--ink-900);
    line-height: 1.5;
    margin-bottom: 6px;
    transition: color 0.25s;
  }

  .post-item:hover h3 {
    color: var(--brand-700);
  }

  .post-item p {
    font-size: 14px;
    color: var(--ink-500);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .post-more {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: 12px;
    font-size: 14px;
    font-weight: 600;
    color: var(--brand-600);
    transition: gap 0.3s;
  }

  .post-item:hover .post-more {
    gap: 10px;
  }

  .empty-tip {
    text-align: center;
    padding: 48px 20px;
    background: var(--white);
    border: 1px dashed var(--paper-200);
    border-radius: 16px;
    color: var(--ink-500);
    font-size: 16px;
  }

  /* ===== 数据区块 ===== */
  .stats-section {
    position: relative;
    background:
      linear-gradient(120deg, rgba(15, 23, 42, 0.92), rgba(55, 48, 163, 0.85)),
      url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    padding: 76px 0;
    color: #fff;
  }

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

  .stat-item {
    text-align: center;
    padding: 24px 12px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 18px;
    backdrop-filter: blur(4px);
    transition: all 0.3s;
  }

  .stat-item:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-4px);
  }

  .stat-number {
    display: block;
    font-size: 38px;
    font-weight: 800;
    letter-spacing: -1px;
    color: #fff;
    margin-bottom: 6px;
  }

  .stat-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.75);
  }

  /* ===== 流程 ===== */
  .process-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .process-step {
    position: relative;
    background: var(--white);
    border: 1px solid var(--paper-200);
    border-radius: 20px;
    padding: 36px 28px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
  }

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

  .step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--brand-600), var(--brand-800));
    color: #fff;
    font-weight: 800;
    font-size: 18px;
    margin-bottom: 18px;
    box-shadow: 0 6px 16px rgba(79, 70, 229, 0.3);
  }

  .process-step h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--ink-900);
  }

  .process-step p {
    font-size: 14px;
    color: var(--ink-500);
    line-height: 1.65;
  }

  /* ===== FAQ ===== */
  .faq-list {
    max-width: 860px;
    margin: 0 auto;
  }

  .faq-item {
    background: var(--white);
    border: 1px solid var(--paper-200);
    border-radius: 16px;
    margin-bottom: 12px;
    overflow: hidden;
    transition: all 0.3s;
  }

  .faq-item summary {
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--ink-900);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    list-style: none;
    transition: color 0.25s;
  }

  .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: 14px;
    color: var(--brand-500);
    transition: transform 0.3s;
    flex-shrink: 0;
  }

  .faq-item[open] summary::after {
    transform: rotate(180deg);
  }

  .faq-item[open] summary {
    color: var(--brand-700);
  }

  .faq-item[open] {
    border-color: var(--brand-100);
    box-shadow: var(--shadow-sm);
  }

  .faq-body {
    padding: 0 24px 22px;
    color: var(--ink-500);
    font-size: 15px;
    line-height: 1.75;
  }

  .faq-body p {
    margin-bottom: 8px;
  }

  /* ===== CTA ===== */
  .cta-section {
    position: relative;
    background:
      linear-gradient(115deg, rgba(15, 23, 42, 0.95), rgba(79, 70, 229, 0.8)),
      url('/assets/images/backpic/back-3.png');
    background-size: cover;
    background-position: center;
    padding: 90px 0;
    color: #fff;
    text-align: center;
  }

  .cta-inner {
    max-width: 720px;
    margin: 0 auto;
  }

  .cta-inner h2 {
    font-size: 34px;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 14px;
    letter-spacing: -0.5px;
  }

  .cta-inner p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
  }

  .cta-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
  }

  .btn-primary-light {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 999px;
    background: #fff;
    color: var(--brand-700);
    font-size: 15px;
    font-weight: 700;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    transition: all 0.25s ease;
  }

  .btn-primary-light:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
  }

  .btn-ghost-light {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: #fff;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.25s ease;
  }

  .btn-ghost-light:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: #fff;
  }

  /* ===== 页脚 ===== */
  .site-footer {
    background: #0f172a;
    color: rgba(255, 255, 255, 0.75);
    padding: 56px 0 24px;
  }

  .footer-top {
    display: flex;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
    margin-bottom: 40px;
  }

  .footer-brand {
    max-width: 320px;
  }

  .footer-logo-text {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 19px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
  }

  .footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.6);
  }

  .footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
  }

  .footer-col a {
    display: block;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
    padding: 5px 0;
    transition: color 0.25s, padding-left 0.25s;
  }

  .footer-col a:hover {
    color: #a5b4fc;
    padding-left: 4px;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 22px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
  }

  .footer-bottom a {
    color: rgba(255, 255, 255, 0.6);
  }

  .footer-bottom a:hover {
    color: #fff;
  }

  /* ===== 响应式 ===== */
  @media (max-width: 1024px) {
    .feature-grid {
      grid-template-columns: repeat(2, 1fr);
    }

    .category-grid {
      gap: 20px;
    }

    .category-card img {
      height: 210px;
    }

    .stats-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }

    .hero-section {
      padding: 170px 0 100px;
    }
  }

  @media (max-width: 768px) {
    .section {
      padding: 64px 0;
    }

    .site-nav {
      border-radius: 16px;
    }

    .nav-links {
      display: none;
      position: absolute;
      top: calc(100% + 12px);
      left: 0;
      right: 0;
      background: #fff;
      border-radius: 16px;
      box-shadow: 0 20px 50px rgba(15, 23, 42, 0.18);
      padding: 12px;
      flex-direction: column;
      gap: 6px;
    }

    .nav-links.open {
      display: flex;
    }

    .nav-link {
      padding: 12px 18px;
      font-size: 15px;
      border-radius: 12px;
      width: 100%;
      text-align: center;
    }

    .nav-cta {
      display: none;
    }

    .nav-toggle {
      display: flex;
    }

    .hero-title {
      font-size: 34px;
    }

    .hero-desc {
      font-size: 15px;
    }

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

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

    .footer-top {
      flex-direction: column;
      gap: 28px;
    }

    .cta-inner h2 {
      font-size: 28px;
    }

    .hero-tags {
      gap: 8px;
    }
  }

  @media (max-width: 520px) {
    .container {
      padding: 0 18px;
    }

    .site-nav {
      width: calc(100% - 20px);
      padding: 8px 14px;
    }

    .logo-text {
      font-size: 15px;
    }

    .logo-badge {
      width: 34px;
      height: 34px;
      font-size: 13px;
    }

    .hero-section {
      padding: 150px 0 78px;
    }

    .hero-title br {
      display: none;
    }

    .feature-grid {
      grid-template-columns: 1fr;
      gap: 14px;
    }

    .stats-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
    }

    .stat-number {
      font-size: 30px;
    }

    .category-card img {
      height: 180px;
    }

    .category-card-body {
      padding: 20px;
    }

    .hero-actions {
      flex-direction: column;
    }

    .hero-actions .btn-primary,
    .hero-actions .btn-ghost {
      width: 100%;
      justify-content: center;
    }

    .cta-actions {
      flex-direction: column;
      align-items: center;
    }

    .cta-actions a {
      width: 100%;
      justify-content: center;
    }
  }

  /* ===== 可访问性 ===== */
  a:focus-visible,
  button:focus-visible,
  summary:focus-visible {
    outline: 3px solid rgba(99, 102, 241, 0.6);
    outline-offset: 2px;
    border-radius: 6px;
  }

/* roulang page: category1 */
:root {
    --brand-500: #6366f1;
    --brand-600: #4f46e5;
    --brand-700: #4338ca;
    --accent-400: #fbbf24;
    --accent-500: #f59e0b;
    --ink-50: #f8fafc;
    --ink-100: #f1f5f9;
    --ink-200: #e2e8f0;
    --ink-600: #475569;
    --ink-700: #334155;
    --ink-800: #1e293b;
    --ink-900: #0f172a;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;
    --shadow-card: 0 1px 3px rgba(15,23,42,0.06), 0 4px 16px rgba(15,23,42,0.04);
    --shadow-hover: 0 4px 12px rgba(15,23,42,0.08), 0 12px 32px rgba(79,70,229,0.10);
  }

  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, sans-serif;
    background-color: var(--ink-50);
    color: var(--ink-800);
    line-height: 1.6;
    margin: 0;
    -webkit-font-smoothing: antialiased;
  }
  img { max-width: 100%; display: block; }
  a { text-decoration: none; color: inherit; transition: color .2s ease; }
  button { font-family: inherit; cursor: pointer; }

  /* ===== 悬浮胶囊导航 ===== */
  .site-header { position: sticky; top: 16px; z-index: 100; padding: 0 20px; }
  .site-nav {
    max-width: 1200px;
    margin: 0 auto;
    background: rgba(255,255,255,0.86);
    backdrop-filter: blur(18px) saturate(160%);
    -webkit-backdrop-filter: blur(18px) saturate(160%);
    border-radius: 70px;
    border: 1px solid rgba(226,232,240,0.7);
    box-shadow: var(--shadow-nav, 0 4px 24px rgba(15,23,42,0.07));
    transition: box-shadow .3s ease;
  }
  .site-nav:hover { box-shadow: 0 6px 30px rgba(15,23,42,0.10); }
  .nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 10px 12px 10px 22px; }
  .logo-wrap { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
  .logo-badge {
    width: 36px; height: 36px; border-radius: 12px;
    background: linear-gradient(135deg, #6366f1, #4f46e5);
    color: #fff; font-size: 15px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    letter-spacing: -0.5px;
    box-shadow: 0 4px 12px rgba(79,70,229,0.35);
  }
  .logo-text { font-size: 16px; font-weight: 600; color: var(--ink-800); letter-spacing: 0.2px; white-space: nowrap; }
  .nav-links { display: flex; align-items: center; gap: 6px; }
  .nav-link {
    padding: 8px 18px; border-radius: 999px;
    font-size: 14px; font-weight: 500; color: var(--ink-600);
    transition: all .2s ease;
  }
  .nav-link:hover { color: var(--brand-600); background: #eef2ff; }
  .nav-link.active { color: #fff; background: linear-gradient(135deg, #6366f1, #4f46e5); box-shadow: 0 4px 14px rgba(79,70,229,0.3); }
  .nav-cta {
    padding: 9px 22px; border-radius: 999px;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #fff; font-size: 14px; font-weight: 600;
    box-shadow: 0 4px 16px rgba(245,158,11,0.35);
    transition: all .25s ease;
    white-space: nowrap;
  }
  .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,158,11,0.45); }
  .nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 8px; }
  .nav-toggle span { width: 22px; height: 2px; background: var(--ink-800); border-radius: 2px; transition: all .3s ease; }
  .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .nav-toggle.active span:nth-child(2) { opacity: 0; }
  .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  /* ===== 通用容器 ===== */
  .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

  /* ===== Hero 区块 ===== */
  .category-hero {
    position: relative;
    margin-top: 16px;
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #312e81 100%);
    border-radius: 28px;
    overflow: hidden;
    min-height: 380px;
    display: flex;
    align-items: center;
  }
  .category-hero::before {
    content: '';
    position: absolute; inset: 0;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    opacity: 0.18;
  }
  .category-hero::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(90deg, rgba(15,23,42,0.85) 0%, rgba(15,23,42,0.4) 60%, rgba(15,23,42,0.1) 100%);
  }
  .hero-content { position: relative; z-index: 2; padding: 60px 56px; max-width: 680px; }
  .hero-tag {
    display: inline-flex; align-items: center; gap: 6px;
    background: rgba(99,102,241,0.2);
    border: 1px solid rgba(165,180,252,0.35);
    color: #c7d2fe;
    padding: 5px 14px; border-radius: 999px;
    font-size: 13px; font-weight: 500;
    letter-spacing: 0.3px;
    margin-bottom: 20px;
    backdrop-filter: blur(4px);
  }
  .hero-content h1 {
    font-size: 40px; line-height: 1.2;
    color: #ffffff; font-weight: 700;
    margin: 0 0 16px 0;
    letter-spacing: 0.5px;
  }
  .hero-content h1 span { color: #a5b4fc; }
  .hero-content p { font-size: 16px; line-height: 1.8; color: rgba(226,232,240,0.85); margin: 0 0 28px 0; }
  .hero-buttons { display: flex; gap: 12px; flex-wrap: wrap; }
  .btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 28px; border-radius: 999px;
    font-size: 15px; font-weight: 600;
    transition: all .3s ease;
    border: none;
  }
  .btn-primary { background: linear-gradient(135deg, #6366f1, #4f46e5); color: #fff; box-shadow: 0 6px 20px rgba(79,70,229,0.35); }
  .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(79,70,229,0.45); }
  .btn-secondary { background: rgba(255,255,255,0.12); color: #e2e8f0; border: 1px solid rgba(255,255,255,0.25); backdrop-filter: blur(8px); }
  .btn-secondary:hover { background: rgba(255,255,255,0.22); transform: translateY(-2px); }

  /* ===== 更新条 ===== */
  .update-bar {
    background: #fff;
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    padding: 16px 24px;
    border: 1px solid var(--ink-100);
    display: flex; align-items: center; gap: 14px;
    margin: 24px 0 40px;
  }
  .update-dot { width: 10px; height: 10px; border-radius: 50%; background: #f59e0b; flex-shrink: 0; box-shadow: 0 0 0 4px rgba(245,158,11,0.18); }
  .update-bar span { font-size: 14px; color: var(--ink-600); }
  .update-bar strong { color: var(--ink-800); font-weight: 600; }
  .update-tags { margin-left: auto; display: flex; gap: 8px; flex-wrap: wrap; }
  .mini-tag { padding: 3px 10px; background: #eef2ff; color: #4f46e5; border-radius: 999px; font-size: 12px; font-weight: 500; }

  /* ===== 板块 ===== */
  .section { padding: 48px 0; }
  .section-header { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 32px; gap: 20px; }
  .section-label { font-size: 13px; font-weight: 600; color: #6366f1; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 8px; display: block; }
  .section-title { font-size: 28px; font-weight: 700; color: var(--ink-900); margin: 0; line-height: 1.3; }
  .section-sub { font-size: 15px; color: var(--ink-600); margin-top: 8px; max-width: 520px; }
  .section-link { font-size: 14px; font-weight: 500; color: #6366f1; display: inline-flex; align-items: center; gap: 6px; }
  .section-link i { transition: transform .2s ease; }
  .section-link:hover i { transform: translateX(4px); }

  /* ===== 分类卡片 ===== */
  .card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 24px; }
  .entry-card {
    background: #fff;
    border-radius: 20px;
    border: 1px solid var(--ink-100);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: all .3s ease;
    display: flex; flex-direction: column;
  }
  .entry-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: #e0e7ff; }
  .card-cover { height: 164px; overflow: hidden; position: relative; }
  .card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
  .entry-card:hover .card-cover img { transform: scale(1.04); }
  .card-body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
  .card-badge { position: absolute; top: 12px; left: 12px; width: auto; padding: 4px 12px; background: rgba(15,23,42,0.72); color: #fff; border-radius: 999px; font-size: 12px; font-weight: 500; backdrop-filter: blur(6px); }
  .card-badge.hot { background: rgba(245,158,11,0.9); }
  .card-title { font-size: 18px; font-weight: 600; color: var(--ink-900); margin: 0 0 10px 0; line-height: 1.4; }
  .card-desc { font-size: 14px; color: var(--ink-600); line-height: 1.7; margin: 0 0 16px 0; flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
  .card-meta { display: flex; align-items: center; gap: 12px; font-size: 13px; color: #94a3b8; border-top: 1px solid var(--ink-100); padding-top: 14px; }
  .card-meta i { margin-right: 4px; }

  /* ===== 流程步骤 ===== */
  .steps-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; }
  .step-item { position: relative; background: #fff; border-radius: 20px; padding: 30px 24px; border: 1px solid var(--ink-100); box-shadow: var(--shadow-card); transition: all .3s ease; }
  .step-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
  .step-num { width: 42px; height: 42px; border-radius: 14px; background: linear-gradient(135deg, #6366f1, #4f46e5); color: #fff; font-weight: 700; font-size: 17px; display: flex; align-items: center; justify-content: center; margin-bottom: 16px; box-shadow: 0 4px 14px rgba(79,70,229,0.3); }
  .step-item h3 { font-size: 16px; font-weight: 600; color: var(--ink-900); margin: 0 0 8px 0; }
  .step-item p { font-size: 14px; color: var(--ink-600); line-height: 1.7; margin: 0; }

  /* ===== 排行榜单 ===== */
  .rank-list { background: #fff; border-radius: 20px; border: 1px solid var(--ink-100); box-shadow: var(--shadow-card); overflow: hidden; }
  .rank-item { display: flex; align-items: center; gap: 18px; padding: 18px 24px; transition: background .2s ease; border-bottom: 1px solid var(--ink-100); }
  .rank-item:last-child { border-bottom: none; }
  .rank-item:hover { background: #f8fafc; }
  .rank-index { width: 34px; height: 34px; border-radius: 10px; background: #f1f5f9; color: var(--ink-600); font-weight: 700; font-size: 15px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
  .rank-item:first-child .rank-index { background: linear-gradient(135deg, #f59e0b, #fbbf24); color: #fff; box-shadow: 0 4px 10px rgba(245,158,11,0.3); }
  .rank-item:nth-child(2) .rank-index { background: linear-gradient(135deg, #94a3b8, #cbd5e1); color: #fff; }
  .rank-item:nth-child(3) .rank-index { background: linear-gradient(135deg, #b45309, #d97706); color: #fff; }
  .rank-main { flex: 1; min-width: 0; }
  .rank-title { font-size: 15px; font-weight: 600; color: var(--ink-800); margin: 0 0 4px 0; }
  .rank-desc { font-size: 13px; color: #94a3b8; margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .rank-status { font-size: 13px; font-weight: 600; padding: 4px 14px; border-radius: 999px; white-space: nowrap; }
  .status-ok { background: #ecfdf5; color: #059669; }
  .status-warn { background: #fffbeb; color: #d97706; }

  /* ===== 标签筛选 ===== */
  .filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 28px; }
  .filter-btn { padding: 7px 18px; border-radius: 999px; font-size: 13px; font-weight: 500; border: 1px solid var(--ink-200); background: #fff; color: var(--ink-600); transition: all .2s ease; }
  .filter-btn:hover { border-color: #c7d2fe; color: #4f46e5; background: #eef2ff; }
  .filter-btn.active { background: var(--brand-600); border-color: var(--brand-600); color: #fff; box-shadow: 0 4px 12px rgba(79,70,229,0.25); }

  /* ===== FAQ ===== */
  .faq-list { max-width: 800px; margin: 0 auto; }
  .faq-item { background: #fff; border-radius: 16px; border: 1px solid var(--ink-100); box-shadow: var(--shadow-card); margin-bottom: 14px; overflow: hidden; transition: all .3s ease; }
  .faq-item:hover { border-color: #e0e7ff; }
  .faq-question { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; cursor: pointer; font-size: 15px; font-weight: 600; color: var(--ink-800); background: none; border: none; width: 100%; text-align: left; gap: 16px; }
  .faq-question i { color: var(--brand-500); flex-shrink: 0; transition: transform .3s ease; font-size: 14px; }
  .faq-item.open .faq-question i { transform: rotate(180deg); }
  .faq-answer { padding: 0 24px; max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .35s ease; color: var(--ink-600); font-size: 14px; line-height: 1.8; }
  .faq-item.open .faq-answer { padding: 0 24px 20px; max-height: 300px; }

  /* ===== CTA ===== */
  .cta-section { background: linear-gradient(135deg, #0f172a, #312e81 70%, #4f46e5); border-radius: 28px; padding: 56px 48px; position: relative; overflow: hidden; text-align: center; }
  .cta-section::before { content: ''; position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center; opacity: 0.12; }
  .cta-inner { position: relative; z-index: 1; }
  .cta-inner h2 { color: #fff; font-size: 30px; font-weight: 700; margin: 0 0 12px 0; }
  .cta-inner p { color: rgba(226,232,240,0.85); font-size: 16px; max-width: 520px; margin: 0 auto 28px; line-height: 1.7; }

  /* ===== 页脚 ===== */
  .site-footer { margin-top: 60px; background: linear-gradient(180deg, #0f172a, #1e1b4b); padding: 60px 0 24px; }
  .footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
  .footer-brand p { color: #94a3b8; font-size: 14px; line-height: 1.9; margin: 14px 0 0; max-width: 320px; }
  .footer-logo-text { font-size: 17px; font-weight: 600; color: #fff; display: flex; align-items: center; gap: 10px; }
  .footer-col h4 { font-size: 14px; font-weight: 600; color: #e2e8f0; margin: 0 0 16px 0; }
  .footer-col a { display: block; color: #94a3b8; font-size: 14px; padding: 5px 0; transition: color .2s ease; }
  .footer-col a:hover { color: #a5b4fc; }
  .footer-bottom { border-top: 1px solid rgba(148,163,184,0.15); padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
  .footer-bottom p { color: #94a3b8; font-size: 13px; margin: 0; }

  /* ===== 响应式 ===== */
  @media (max-width: 1024px) {
    .footer-top { grid-template-columns: 1fr 1fr; gap: 30px; }
    .category-hero { min-height: 340px; }
    .hero-content { padding: 48px 40px; }
    .hero-content h1 { font-size: 32px; }
  }
  @media (max-width: 768px) {
    .site-header { padding: 0 14px; top: 10px; }
    .nav-cta { display: none; }
    .nav-links { display: none; position: absolute; top: calc(100% + 10px); left: 0; right: 0; background: #fff; border-radius: 18px; border: 1px solid var(--ink-100); box-shadow: 0 12px 32px rgba(15,23,42,0.1); padding: 14px; flex-direction: column; align-items: stretch; }
    .nav-links.open { display: flex; }
    .nav-link { text-align: center; padding: 12px 16px; }
    .nav-toggle { display: flex; }
    .category-hero { min-height: auto; border-radius: 20px; margin-top: 10px; }
    .hero-content { padding: 36px 28px; }
    .hero-content h1 { font-size: 27px; }
    .section { padding: 36px 0; }
    .section-title { font-size: 23px; }
    .section-header { flex-direction: column; align-items: flex-start; gap: 10px; margin-bottom: 24px; }
    .update-bar { flex-wrap: wrap; padding: 14px 18px; }
    .update-tags { margin-left: 0; }
    .footer-top { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { flex-direction: column; }
    .cta-section { padding: 40px 24px; }
    .cta-inner h2 { font-size: 24px; }
    .card-grid { grid-template-columns: 1fr; }
    .steps-grid { grid-template-columns: 1fr; }
    .rank-item { flex-wrap: wrap; padding: 16px; }
  }
  @media (max-width: 520px) {
    .container { padding: 0 16px; }
    .logo-text { font-size: 14px; }
    .logo-badge { width: 32px; height: 32px; font-size: 13px; }
    .hero-content h1 { font-size: 23px; }
    .hero-content p { font-size: 14px; }
    .btn { padding: 11px 20px; font-size: 14px; }
    .section-title { font-size: 20px; }
    .rank-main .rank-desc { white-space: normal; }
    .faq-question { padding: 16px 18px; font-size: 14px; }
    .faq-answer { font-size: 13px; }
  }

/* roulang page: article */
:root {
  --primary: #1e3a8a;
  --primary-light: #3b82f6;
  --accent: #f59e0b;
  --bg: #f1f5f9;
  --text: #0f172a;
  --text-weak: #64748b;
  --border: #e2e8f0;
  --radius: 20px;
  --radius-sm: 12px;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.12);
  --transition: all .25s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* ===== 顶部悬浮胶囊导航 ===== */
.site-header {
  position: sticky;
  top: 16px;
  z-index: 100;
  padding: 0 16px;
  margin-bottom: -76px;
}
.site-nav {
  max-width: 1180px;
  margin: 0 auto;
  background: rgba(255,255,255,0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-radius: 999px;
  border: 1px solid rgba(226,232,240,0.8);
  box-shadow: 0 6px 30px rgba(15,23,42,0.07);
  padding: 10px 14px 10px 20px;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  color: var(--text);
  white-space: nowrap;
}
.logo-badge {
  background: linear-gradient(135deg,#1e3a8a,#3b82f6);
  color: #fff;
  border-radius: 9px;
  padding: 4px 9px;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .3px;
  box-shadow: 0 2px 8px rgba(30,58,138,0.25);
}
.logo-text {
  background: linear-gradient(90deg,#0f172a,#1e3a8a);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-weak);
  transition: var(--transition);
  border: 1px solid transparent;
}
.nav-link:hover {
  color: var(--primary);
  background: rgba(30,58,138,0.07);
  border-color: rgba(30,58,138,0.08);
}
.nav-link.active {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 4px 14px rgba(30,58,138,0.28);
}
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 20px;
  border-radius: 999px;
  background: linear-gradient(135deg,#f59e0b,#fbbf24);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(245,158,11,0.3);
  transition: var(--transition);
  white-space: nowrap;
}
.nav-cta i { font-size: 12px; }
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(245,158,11,0.4);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
  border-radius: 50%;
  transition: var(--transition);
}
.nav-toggle:hover { background: rgba(15,23,42,0.05); }
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== 文章 Hero ===== */
.article-hero {
  position: relative;
  padding: 140px 0 72px;
  background: linear-gradient(135deg,#0f172a 0%,#1e3a8a 100%);
  color: #fff;
  overflow: hidden;
  border-radius: 0 0 32px 32px;
}
.article-hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.28;
}
.article-hero::after {
  content: '';
  position: absolute;
  bottom: -60px;
  right: -60px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle,rgba(59,130,246,0.25),transparent 70%);
  border-radius: 50%;
}
.article-hero .container { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  margin-bottom: 24px;
}
.breadcrumb a { color: rgba(255,255,255,0.85); transition: var(--transition); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { color: rgba(255,255,255,0.4); }
.article-hero h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 18px;
  max-width: 860px;
}
.article-hero-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
}
.article-hero-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.12);
  padding: 6px 14px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
}
.article-hero-meta .meta-item i { font-size: 13px; color: #fbbf24; }
.article-hero-meta .cat-badge {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 13px;
}

/* ===== 文章正文 ===== */
.article-body-section {
  padding: 64px 0 48px;
}
.article-layout {
  max-width: 900px;
  margin: 0 auto;
}
.article-card {
  background: #fff;
  border-radius: 24px;
  padding: clamp(24px, 5vw, 56px);
  box-shadow: var(--shadow);
  border: 1px solid rgba(226,232,240,0.6);
}
.article-content {
  font-size: 16px;
  line-height: 1.9;
  color: #334155;
}
.article-content h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin: 36px 0 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid #eff6ff;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin: 28px 0 12px;
}
.article-content h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin: 22px 0 10px;
}
.article-content p {
  margin-bottom: 18px;
  color: #475569;
}
.article-content a {
  color: var(--primary);
  border-bottom: 1px solid rgba(30,58,138,0.3);
  transition: var(--transition);
}
.article-content a:hover {
  color: var(--primary-light);
  border-bottom-color: var(--primary-light);
}
.article-content ul, .article-content ol {
  margin: 16px 0 20px;
  padding-left: 24px;
  color: #475569;
}
.article-content li {
  margin-bottom: 8px;
}
.article-content ul li::marker { color: var(--accent); }
.article-content ol li::marker { color: var(--primary); font-weight: 600; }
.article-content blockquote {
  border-left: 4px solid var(--accent);
  background: #fffbeb;
  padding: 16px 20px;
  border-radius: 0 12px 12px 0;
  margin: 20px 0;
  color: #78350f;
  font-style: italic;
}
.article-content img {
  border-radius: 14px;
  margin: 24px 0;
  box-shadow: 0 6px 24px rgba(15,23,42,0.08);
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}
.article-content th {
  background: #f8fafc;
  color: var(--text);
  font-weight: 600;
  padding: 12px 16px;
  border: 1px solid var(--border);
}
.article-content td {
  padding: 12px 16px;
  border: 1px solid var(--border);
  color: #475569;
}
.article-content code {
  background: #f1f5f9;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 14px;
  color: #be123c;
}
.article-footer-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  background: linear-gradient(135deg,#1e3a8a,#3b82f6);
  color: #fff !important;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 6px 20px rgba(30,58,138,0.3);
  transition: var(--transition);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(30,58,138,0.4);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  background: #fff;
  color: var(--text) !important;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary) !important;
  background: #f8fafc;
  transform: translateY(-2px);
}
.btn-accent {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 999px;
  background: linear-gradient(135deg,#f59e0b,#fbbf24);
  color: #fff !important;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 6px 20px rgba(245,158,11,0.35);
  transition: var(--transition);
}
.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(245,158,11,0.45);
}

/* ===== 未找到 ===== */
.not-found {
  background: #fff;
  border-radius: 24px;
  padding: 64px 32px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid rgba(226,232,240,0.6);
  max-width: 640px;
  margin: 0 auto;
}
.not-found-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  background: #fef3c7;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  color: #d97706;
}
.not-found h2 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 8px;
}
.not-found p {
  color: var(--text-weak);
  margin-bottom: 24px;
}

/* ===== 延伸阅读 ===== */
.rel-section {
  padding: 48px 0;
}
.section-head {
  text-align: center;
  margin-bottom: 40px;
}
.section-head .sub-title {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  background: #fffbeb;
  padding: 5px 16px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  color: var(--text);
}
.section-head p {
  color: var(--text-weak);
  margin-top: 8px;
}
.rel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.rel-card {
  background: #fff;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid rgba(226,232,240,0.6);
  transition: var(--transition);
  display: block;
}
.rel-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.rel-card-img {
  position: relative;
  height: 180px;
  overflow: hidden;
}
.rel-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.rel-card:hover .rel-card-img img {
  transform: scale(1.04);
}
.rel-card-body {
  padding: 20px 22px 24px;
}
.rel-card-body h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}
.rel-card-body p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.6;
}
.rel-card-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: #eff6ff;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

/* ===== 分类入口 ===== */
.cat-section {
  padding: 48px 0 64px;
}
.cat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.cat-card {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  min-height: 260px;
  display: flex;
  align-items: flex-end;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid rgba(226,232,240,0.6);
}
.cat-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.cat-card-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform .5s ease;
}
.cat-card:hover .cat-card-bg {
  transform: scale(1.05);
}
.cat-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15,23,42,0.1) 0%, rgba(15,23,42,0.75) 100%);
}
.cat-card-body {
  position: relative;
  z-index: 2;
  padding: 28px;
  color: #fff;
  width: 100%;
}
.cat-card-body h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 6px;
}
.cat-card-body p {
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255,255,255,0.85);
  margin-bottom: 12px;
}
.cat-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: #fbbf24;
  transition: var(--transition);
}
.cat-card:hover .cat-card-link {
  gap: 10px;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 64px 0;
  background: linear-gradient(180deg,#f8fafc 0%,#f1f5f9 100%);
}
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: #fff;
  border-radius: 16px;
  padding: 24px 28px;
  box-shadow: 0 2px 12px rgba(15,23,42,0.04);
  border: 1px solid rgba(226,232,240,0.5);
  transition: var(--transition);
}
.faq-item:hover {
  box-shadow: 0 8px 24px rgba(15,23,42,0.08);
  border-color: rgba(30,58,138,0.15);
}
.faq-item h3 {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.faq-item h3 i {
  color: var(--accent);
  font-size: 18px;
  margin-top: 3px;
}
.faq-item p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.8;
  padding-left: 30px;
}

/* ===== CTA ===== */
.cta-section {
  padding: 64px 0 80px;
}
.cta-box {
  position: relative;
  border-radius: 28px;
  background: linear-gradient(135deg,#0f172a,#1e3a8a);
  overflow: hidden;
  padding: 64px 48px;
  text-align: center;
  color: #fff;
  box-shadow: 0 20px 60px rgba(15,23,42,0.25);
}
.cta-box::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle,rgba(59,130,246,0.3),transparent 70%);
  border-radius: 50%;
}
.cta-box::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -60px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle,rgba(245,158,11,0.2),transparent 70%);
  border-radius: 50%;
}
.cta-box .container { position: relative; z-index: 2; }
.cta-box h2 {
  font-size: clamp(24px,3vw,32px);
  font-weight: 800;
  margin-bottom: 12px;
}
.cta-box p {
  color: rgba(255,255,255,0.75);
  margin-bottom: 28px;
  font-size: 15px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 64px 0 32px;
  margin-top: 24px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-logo-text {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: #94a3b8;
  max-width: 360px;
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  color: #94a3b8;
  font-size: 14px;
  padding: 6px 0;
  transition: var(--transition);
}
.footer-col a:hover {
  color: #fff;
  padding-left: 6px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: #64748b;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .rel-grid { grid-template-columns: repeat(2, 1fr); }
  .cat-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
}
@media (max-width: 768px) {
  .site-header { padding: 0 12px; }
  .site-nav { border-radius: 24px; padding: 12px 16px; }
  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: 12px;
    right: 12px;
    background: #fff;
    border-radius: 20px;
    padding: 12px;
    flex-direction: column;
    gap: 4px;
    box-shadow: 0 16px 40px rgba(15,23,42,0.15);
    border: 1px solid rgba(226,232,240,0.6);
  }
  .nav-links.open { display: flex; }
  .nav-link {
    width: 100%;
    text-align: center;
    padding: 12px;
    font-size: 15px;
  }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .article-hero { padding: 120px 0 48px; border-radius: 0 0 24px 24px; }
  .article-card { padding: 24px 18px; }
  .article-footer-nav { flex-direction: column; align-items: flex-start; }
  .cat-grid { grid-template-columns: 1fr; }
  .cat-card { min-height: 220px; }
  .rel-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .cta-box { padding: 48px 24px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .article-hero h1 { font-size: 26px; }
  .article-hero-meta .meta-item:not(.cat-badge) { display: none; }
  .breadcrumb { font-size: 12px; }
  .faq-item { padding: 18px; }
  .cta-box { border-radius: 20px; padding: 40px 20px; }
  .cta-box h2 { font-size: 22px; }
  .btn-accent { width: 100%; justify-content: center; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: category2 */
/* ==================================================
     设计变量与基础 Reset
  ================================================== */
  :root {
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #EEF2FF;
    --accent: #F59E0B;
    --accent-light: #FEF3C7;
    --bg-soft: #F8FAFC;
    --bg-white: #FFFFFF;
    --text: #1E293B;
    --text-muted: #64748B;
    --border: #E2E8F0;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 12px 40px rgba(79, 70, 229, 0.12);
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  }

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

  html {
    scroll-behavior: smooth;
  }

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

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

  a {
    text-decoration: none;
    color: inherit;
    transition: color 0.25s ease;
  }

  button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
  }

  input,
  textarea {
    font-family: inherit;
  }

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

  .section-pad {
    padding: 72px 0;
  }

  .section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 48px;
  }

  .section-eyebrow {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.05em;
    padding: 6px 16px;
    border-radius: 999px;
    margin-bottom: 16px;
  }

  .section-title {
    font-size: 34px;
    font-weight: 800;
    line-height: 1.25;
    color: var(--text);
    letter-spacing: -0.02em;
    margin-bottom: 12px;
  }

  .section-sub {
    font-size: 16px;
    color: var(--text-muted);
    line-height: 1.7;
  }

  /* ==================================================
     导航栏
  ================================================== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    padding: 14px 24px 0;
  }

  .site-nav {
    max-width: 1200px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: 999px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    padding: 0 8px;
  }

  .nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
  }

  .logo-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-left: 8px;
    flex-shrink: 0;
  }

  .logo-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    padding: 0 8px;
    background: linear-gradient(135deg, var(--primary) 0%, #7C3AED 100%);
    color: #fff;
    font-size: 14px;
    font-weight: 800;
    border-radius: 10px;
    letter-spacing: 0.02em;
  }

  .logo-text {
    font-size: 17px;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.01em;
    white-space: nowrap;
  }

  .nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
  }

  .nav-link {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    transition: all 0.25s ease;
  }

  .nav-link:hover {
    color: var(--primary);
    background: var(--primary-light);
  }

  .nav-link.active {
    background: var(--primary);
    color: #fff;
    font-weight: 600;
  }

  .nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    border: 1.5px solid var(--primary);
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    padding: 8px 18px;
    border-radius: 999px;
    transition: all 0.25s ease;
    margin-right: 8px;
    flex-shrink: 0;
  }

  .nav-cta:hover {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 16px rgba(79, 70, 229, 0.25);
    transform: translateY(-1px);
  }

  .nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    border-radius: 8px;
    margin-right: 4px;
  }

  .nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all 0.3s ease;
  }

  /* ==================================================
     Hero 区
  ================================================== */
  .hero {
    position: relative;
    background: linear-gradient(rgba(30, 41, 59, 0.78), rgba(30, 41, 59, 0.82)),
      url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    padding: 96px 0 88px;
    text-align: center;
    color: #fff;
  }

  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.35);
    backdrop-filter: blur(8px);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.04em;
    padding: 7px 18px;
    border-radius: 999px;
    margin-bottom: 20px;
  }

  .hero-badge i {
    color: var(--accent);
  }

  .hero h1 {
    font-size: 46px;
    font-weight: 900;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 18px;
  }

  .hero h1 span {
    background: linear-gradient(90deg, #A78BFA, #F59E0B);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .hero-desc {
    font-size: 17px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.82);
    max-width: 640px;
    margin: 0 auto 32px;
  }

  .hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    padding: 13px 28px;
    border-radius: 999px;
    box-shadow: 0 4px 20px rgba(79, 70, 229, 0.35);
    transition: all 0.3s ease;
  }

  .btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(79, 70, 229, 0.4);
  }

  .btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    padding: 13px 28px;
    border: 1.5px solid rgba(255, 255, 255, 0.5);
    border-radius: 999px;
    transition: all 0.3s ease;
  }

  .btn-outline:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: #fff;
    transform: translateY(-2px);
  }

  .hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 48px;
    margin-top: 48px;
    flex-wrap: wrap;
  }

  .hero-stat {
    text-align: center;
  }

  .hero-stat .num {
    font-size: 32px;
    font-weight: 800;
    color: #fff;
  }

  .hero-stat .label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.65);
    margin-top: 4px;
  }

  /* ==================================================
     更新条
  ================================================== */
  .update-bar {
    background: #fff;
    border-bottom: 1px solid var(--border);
  }

  .update-bar .container {
    display: flex;
    align-items: center;
    gap: 16px;
    padding-top: 12px;
    padding-bottom: 12px;
    overflow: hidden;
  }

  .update-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    background: var(--primary-light);
    padding: 4px 12px;
    border-radius: 999px;
    flex-shrink: 0;
  }

  .update-text {
    font-size: 14px;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .update-text a {
    color: var(--text);
    font-weight: 500;
  }

  .update-text a:hover {
    color: var(--primary);
  }

  /* ==================================================
     卡片通用
  ================================================== */
  .card {
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: all 0.3s ease;
  }

  .card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
    border-color: rgba(79, 70, 229, 0.25);
  }

  .card-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 999px;
  }

  .card-tag.accent {
    background: var(--accent-light);
    color: #b45309;
  }

  .card-tag.green {
    background: #ECFDF5;
    color: #059669;
  }

  /* ==================================================
     策略卡片
  ================================================== */
  .strategy-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .strategy-card .card-cover {
    position: relative;
    height: 180px;
    overflow: hidden;
  }

  .strategy-card .card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
  }

  .strategy-card:hover .card-cover img {
    transform: scale(1.05);
  }

  .strategy-card .cover-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.5) 0%, transparent 50%);
    display: flex;
    align-items: flex-end;
    padding: 14px;
  }

  .strategy-card .card-body {
    padding: 20px;
  }

  .strategy-card .card-title {
    font-size: 16px;
    font-weight: 700;
    line-height: 1.45;
    color: var(--text);
    margin: 12px 0 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .strategy-card .card-title a:hover {
    color: var(--primary);
  }

  .strategy-card .card-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 14px;
  }

  .card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: var(--text-muted);
  }

  .card-meta i {
    font-size: 12px;
    color: #cbd5e1;
  }

  /* ==================================================
     分类入口卡
  ================================================== */
  .cat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }

  .cat-card {
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 28px 24px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-card);
  }

  .cat-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
    border-color: rgba(79, 70, 229, 0.25);
  }

  .cat-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    border-radius: 18px;
    color: #fff;
  }

  .cat-icon.indigo {
    background: linear-gradient(135deg, #6366F1, #4338CA);
  }

  .cat-icon.amber {
    background: linear-gradient(135deg, #F59E0B, #D97706);
  }

  .cat-icon.emerald {
    background: linear-gradient(135deg, #10B981, #059669);
  }

  .cat-icon.rose {
    background: linear-gradient(135deg, #F43F5E, #E11D48);
  }

  .cat-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
  }

  .cat-card p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
  }

  /* ==================================================
     排行榜
  ================================================== */
  .ranking-section {
    background: #fff;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .ranking-list {
    max-width: 800px;
    margin: 0 auto;
  }

  .rank-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 20px;
    border-radius: 14px;
    transition: all 0.25s ease;
  }

  .rank-item:hover {
    background: var(--bg-soft);
  }

  .rank-num {
    font-size: 22px;
    font-weight: 900;
    width: 44px;
    text-align: center;
    flex-shrink: 0;
    font-style: italic;
    color: #cbd5e1;
  }

  .rank-item:nth-child(1) .rank-num {
    color: #F59E0B;
  }
  .rank-item:nth-child(2) .rank-num {
    color: #94A3B8;
  }
  .rank-item:nth-child(3) .rank-num {
    color: #D97706;
  }

  .rank-info {
    flex: 1;
    min-width: 0;
  }

  .rank-info h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .rank-info h4 a:hover {
    color: var(--primary);
  }

  .rank-info .rank-desc {
    font-size: 13px;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .rank-badge {
    flex-shrink: 0;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 999px;
    background: var(--primary-light);
    color: var(--primary);
  }

  .rank-badge.hot {
    background: #FEF3C7;
    color: #b45309;
  }

  /* ==================================================
     流程步骤
  ================================================== */
  .steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
  }

  .step-card {
    position: relative;
    text-align: center;
    padding: 32px 20px 20px;
  }

  .step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    margin-bottom: 18px;
    box-shadow: 0 4px 16px rgba(79, 70, 229, 0.3);
  }

  .step-card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
  }

  .step-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
  }

  /* ==================================================
     FAQ
  ================================================== */
  .faq-list {
    max-width: 800px;
    margin: 0 auto;
  }

  .faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    margin-bottom: 14px;
    overflow: hidden;
    transition: all 0.25s ease;
  }

  .faq-item:hover {
    border-color: rgba(79, 70, 229, 0.3);
  }

  .faq-question {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 24px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    transition: background 0.25s ease;
  }

  .faq-question:hover {
    background: var(--bg-soft);
  }

  .faq-question .faq-icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 50%;
    font-size: 12px;
    flex-shrink: 0;
    transition: transform 0.3s ease;
  }

  .faq-question.open .faq-icon {
    transform: rotate(180deg);
    background: var(--primary);
    color: #fff;
  }

  .faq-answer {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
  }

  .faq-answer p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    padding-bottom: 18px;
  }

  /* ==================================================
     CTA
  ================================================== */
  .cta-section {
    position: relative;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.9), rgba(124, 58, 237, 0.88)),
      url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    padding: 72px 0;
    text-align: center;
    color: #fff;
  }

  .cta-title {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 12px;
    line-height: 1.3;
  }

  .cta-desc {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.85);
    max-width: 560px;
    margin: 0 auto 28px;
    line-height: 1.6;
  }

  .cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: #fff;
    color: var(--primary);
    font-size: 15px;
    font-weight: 700;
    padding: 14px 32px;
    border-radius: 999px;
    transition: all 0.3s ease;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
  }

  .cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.2);
  }

  /* ==================================================
     页脚
  ================================================== */
  .site-footer {
    background: #0F172A;
    color: #94A3B8;
    padding: 56px 0 32px;
  }

  .footer-top {
    display: flex;
    gap: 48px;
    margin-bottom: 40px;
    flex-wrap: wrap;
  }

  .footer-brand {
    flex: 1;
    min-width: 260px;
  }

  .footer-logo-text {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    color: #F1F5F9;
    margin-bottom: 12px;
  }

  .footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    max-width: 340px;
  }

  .footer-col {
    min-width: 160px;
  }

  .footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: #F1F5F9;
    margin-bottom: 16px;
  }

  .footer-col a {
    display: block;
    font-size: 14px;
    color: #94A3B8;
    padding: 6px 0;
    transition: color 0.25s ease, padding-left 0.25s ease;
  }

  .footer-col a:hover {
    color: #A78BFA;
    padding-left: 4px;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
  }

  /* ==================================================
     响应式
  ================================================== */
  @media (max-width: 1024px) {
    .strategy-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .cat-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .steps-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }
    .hero h1 {
      font-size: 36px;
    }
  }

  @media (max-width: 768px) {
    .section-pad {
      padding: 56px 0;
    }
    .section-title {
      font-size: 26px;
    }

    .nav-links {
      position: absolute;
      top: 64px;
      left: 16px;
      right: 16px;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 20px;
      box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
      padding: 16px;
      display: flex;
      flex-direction: column;
      gap: 4px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(-10px);
      transition: all 0.3s ease;
    }

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

    .nav-link {
      padding: 12px 16px;
      border-radius: 12px;
      font-size: 15px;
    }

    .nav-cta {
      display: none;
    }

    .nav-toggle {
      display: flex;
    }

    .site-nav {
      border-radius: 24px;
    }

    .hero {
      padding: 64px 0;
    }
    .hero h1 {
      font-size: 30px;
    }
    .hero-desc {
      font-size: 15px;
    }
    .hero-stats {
      gap: 24px;
    }
    .hero-stat .num {
      font-size: 24px;
    }
  }

  @media (max-width: 520px) {
    .container {
      padding: 0 16px;
    }

    .strategy-grid,
    .cat-grid,
    .steps-grid {
      grid-template-columns: 1fr;
    }

    .hero h1 {
      font-size: 26px;
    }

    .hero-actions {
      flex-direction: column;
      gap: 12px;
    }

    .hero-actions .btn-primary,
    .hero-actions .btn-outline {
      width: 100%;
      justify-content: center;
    }

    .hero-stats {
      gap: 16px;
    }

    .hero-stat .num {
      font-size: 20px;
    }

    .update-bar .container {
      flex-direction: column;
      align-items: flex-start;
      gap: 6px;
    }

    .rank-item {
      padding: 14px;
      gap: 10px;
    }

    .rank-info h4 {
      font-size: 14px;
    }

    .rank-desc {
      display: none;
    }

    .rank-badge {
      font-size: 11px;
      padding: 3px 10px;
    }

    .footer-top {
      flex-direction: column;
      gap: 28px;
    }

    .cta-title {
      font-size: 24px;
    }
  }