/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    :root {
      --primary-blue: #0A6EFF;
      --primary-blue-hover: #0055CC;
      --accent-orange: #FF6B35;
      --accent-orange-hover: #E55A2B;
      --bg-cool-gray: #F7F9FC;
      --card-white: #FFFFFF;
      --text-dark: #1E293B;
      --text-mid: #64748B;
      --text-light: #94A3B8;
      --border-light: #E2E8F0;
      --shadow-card: 0 4px 24px rgba(0,0,0,0.06);
      --shadow-hover: 0 8px 32px rgba(0,0,0,0.10);
      --radius-card: 16px;
      --radius-btn: 8px;
      --transition: 0.25s ease;
      --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg-cool-gray);
      color: var(--text-dark);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }
    /* 导航 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 50;
      background: rgba(255,255,255,0.85);
      backdrop-filter: blur(12px);
      transition: background 0.3s, box-shadow 0.3s;
    }
    .navbar.scrolled {
      background: rgba(255,255,255,0.98);
      box-shadow: 0 2px 12px rgba(0,0,0,0.05);
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 700;
      font-size: 1.5rem;
      color: var(--primary-blue);
      letter-spacing: -0.3px;
    }
    .nav-brand i {
      font-size: 1.8rem;
      color: var(--accent-orange);
    }
    .nav-link {
      font-weight: 500;
      color: var(--text-mid);
      transition: color 0.2s;
      position: relative;
      padding: 6px 0;
      white-space: nowrap;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary-blue);
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary-blue);
      border-radius: 2px;
    }
    .tag-hot {
      background: #F0F6FF;
      color: var(--primary-blue);
      border-radius: 20px;
      padding: 4px 12px;
      font-size: 0.8rem;
      font-weight: 500;
      cursor: default;
    }
    /* 按钮 */
    .btn-primary {
      background: var(--primary-blue);
      color: white;
      border-radius: var(--radius-btn);
      padding: 14px 32px;
      font-weight: 600;
      transition: background 0.2s, transform 0.1s;
      display: inline-block;
    }
    .btn-primary:hover { background: var(--primary-blue-hover); transform: translateY(-1px); }
    .btn-outline {
      border: 1.5px solid var(--primary-blue);
      color: var(--primary-blue);
      background: transparent;
      border-radius: var(--radius-btn);
      padding: 14px 32px;
      font-weight: 600;
      transition: all 0.2s;
      display: inline-block;
    }
    .btn-outline:hover { background: #E8F2FF; border-color: var(--primary-blue-hover); color: var(--primary-blue-hover); }
    .btn-orange {
      background: var(--accent-orange);
      color: white;
      border-radius: var(--radius-btn);
      padding: 14px 28px;
      font-weight: 600;
      transition: background 0.2s;
      width: 100%;
    }
    .btn-orange:hover { background: var(--accent-orange-hover); }
    /* 卡片 */
    .card {
      background: var(--card-white);
      border-radius: var(--radius-card);
      padding: 28px;
      box-shadow: var(--shadow-card);
      transition: var(--transition);
      height: 100%;
    }
    .card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-2px);
    }
    .icon-circle {
      width: 48px;
      height: 48px;
      background: #F0F6FF;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--primary-blue);
      font-size: 1.4rem;
    }
    /* 对比表 */
    .compare-table th, .compare-table td {
      padding: 14px 16px;
      border-bottom: 1px solid var(--border-light);
      font-size: 0.95rem;
    }
    .check-icon {
      color: var(--accent-orange);
      margin-right: 4px;
    }
    /* FAQ */
    .faq-item {
      border-bottom: 1px solid var(--border-light);
      padding: 18px 0;
      cursor: pointer;
    }
    .faq-question {
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: var(--text-dark);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
      color: var(--text-mid);
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      margin-top: 12px;
    }
    .faq-item.active .faq-question {
      color: var(--primary-blue);
    }
    /* 表单 */
    .input-field {
      width: 100%;
      padding: 14px 16px;
      background: white;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-btn);
      font-size: 1rem;
      transition: border 0.2s;
    }
    .input-field:focus {
      outline: none;
      border-color: var(--primary-blue);
      box-shadow: 0 0 0 3px rgba(10,110,255,0.1);
    }
    /* 移动菜单 */
    .mobile-menu {
      position: fixed;
      top: 0;
      right: -100%;
      width: 75%;
      max-width: 320px;
      height: 100vh;
      background: white;
      box-shadow: -5px 0 25px rgba(0,0,0,0.1);
      transition: right 0.3s ease;
      z-index: 100;
      padding: 30px 24px;
    }
    .mobile-menu.open { right: 0; }
    .overlay {
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.4);
      z-index: 90;
      display: none;
    }
    .overlay.active { display: block; }
    @media (max-width: 768px) {
      .hero-title { font-size: 2rem !important; }
      .container { padding: 0 16px; }
    }