/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    :root {
      --primary: #E43D30;
      --primary-dark: #C43126;
      --secondary: #1A2744;
      --accent: #00C48C;
      --bg: #F7F5F2;
      --card-bg: #FFFFFF;
      --text: #1A2744;
      --text-weak: #5E6A7A;
      --border: #E8E6E1;
      --radius-card: 16px;
      --radius-btn: 8px;
      --shadow-card: 0 4px 24px rgba(26,39,68,0.06);
      --shadow-card-hover: 0 12px 32px rgba(26,39,68,0.12);
      --font-heading: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
      --font-body: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    }
    * {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      font-family: var(--font-body);
      background-color: var(--bg);
      color: var(--text);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      color: inherit;
      text-decoration: none;
    }
    button, input, textarea {
      font-family: inherit;
    }
    .container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    @media (max-width: 768px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
    }

    /* 导航 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 50;
      transition: background 0.3s, box-shadow 0.3s;
      background: transparent;
    }
    .navbar.scrolled {
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(12px);
      box-shadow: 0 2px 20px rgba(0,0,0,0.04);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }
    .logo {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 1.5rem;
      color: #fff;
      transition: color 0.3s;
      letter-spacing: -0.3px;
    }
    .navbar.scrolled .logo {
      color: var(--secondary);
    }
    .nav-links {
      display: flex;
      gap: 2rem;
      align-items: center;
      font-weight: 500;
      font-size: 0.95rem;
      color: rgba(255,255,255,0.9);
    }
    .navbar.scrolled .nav-links {
      color: var(--secondary);
    }
    .nav-links a {
      transition: color 0.2s;
    }
    .nav-links a:hover {
      color: var(--primary);
    }
    .mega-trigger {
      background: rgba(255,255,255,0.15);
      backdrop-filter: blur(4px);
      padding: 0.5rem 1.2rem;
      border-radius: 30px;
      color: white;
      font-weight: 600;
      font-size: 0.9rem;
      cursor: pointer;
      transition: background 0.2s;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .navbar.scrolled .mega-trigger {
      background: var(--secondary);
      color: white;
    }
    .mega-trigger:hover {
      background: var(--primary);
    }
    .mega-panel {
      position: absolute;
      top: 70px;
      right: 24px;
      width: 380px;
      background: white;
      border-radius: 20px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.2);
      padding: 1.8rem;
      opacity: 0;
      visibility: hidden;
      transform: translateY(10px);
      transition: 0.25s ease;
      display: grid;
      gap: 1.5rem;
      color: var(--text);
    }
    .mega-panel.active {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .tag {
      background: #F0EDE8;
      padding: 0.3rem 0.9rem;
      border-radius: 20px;
      font-size: 0.8rem;
      font-weight: 500;
    }
    .hamburger {
      display: none;
      font-size: 1.6rem;
      color: white;
      cursor: pointer;
    }
    .navbar.scrolled .hamburger {
      color: var(--secondary);
    }
    @media (max-width: 768px) {
      .nav-links, .mega-trigger {
        display: none;
      }
      .hamburger {
        display: block;
      }
      .mobile-menu {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(26,39,68,0.98);
        backdrop-filter: blur(10px);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2rem;
        font-size: 1.5rem;
        color: white;
        transform: translateX(100%);
        transition: 0.3s;
        z-index: 60;
      }
      .mobile-menu.active {
        transform: translateX(0);
      }
    }

    /* 按钮 */
    .btn-primary {
      background: var(--primary);
      color: white;
      font-weight: 600;
      padding: 0.8rem 2rem;
      border-radius: var(--radius-btn);
      display: inline-block;
      transition: background 0.2s;
      border: none;
      cursor: pointer;
    }
    .btn-primary:hover {
      background: var(--primary-dark);
    }
    .btn-outline {
      border: 2px solid var(--secondary);
      color: var(--secondary);
      font-weight: 600;
      padding: 0.7rem 1.8rem;
      border-radius: var(--radius-btn);
      display: inline-block;
      transition: 0.2s;
    }
    .btn-outline:hover {
      background: var(--secondary);
      color: white;
    }

    /* hero */
    .hero {
      min-height: 90vh;
      display: flex;
      align-items: center;
      background: linear-gradient(135deg, rgba(26,39,68,0.82) 0%, rgba(26,39,68,0.45) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      color: white;
    }
    .data-badge {
      background: rgba(255,255,255,0.1);
      backdrop-filter: blur(8px);
      padding: 0.5rem 1rem;
      border-radius: 30px;
      font-size: 0.9rem;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    /* 卡片 */
    .card {
      background: var(--card-bg);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      transition: all 0.25s ease;
      overflow: hidden;
    }
    .card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-card-hover);
    }
    .stat-number {
      font-size: 56px;
      font-weight: 800;
      font-feature-settings: "tnum";
      color: var(--accent);
      line-height: 1.2;
    }

    /* FAQ */
    .faq-item {
      border-bottom: 1px solid var(--border);
    }
    .faq-question {
      cursor: pointer;
      padding: 1.2rem 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background: #FAF9F7;
      border-radius: 8px;
    }
    .faq-answer.open {
      max-height: 200px;
      padding: 1rem;
    }

    footer {
      background: var(--secondary);
      color: white;
    }