/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    
    :root {
      --primary: #0A1F2F;
      --primary-light: #132D40;
      --accent: #E65100;
      --accent-hover: #BF4400;
      --bg-light: #FAFAFA;
      --bg-card: #FFFFFF;
      --bg-warm: #FFF5F0;
      --text-main: #1a1a1a;
      --text-secondary: #555;
      --text-muted: #777;
      --border-light: #EEEEEE;
      --border-card: #EEEEEE;
      --shadow-card: 0 4px 20px rgba(0,0,0,0.04);
      --shadow-hover: 0 12px 32px rgba(10,31,47,0.08);
      --radius-card: 12px;
      --radius-btn: 8px;
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', 'Inter', sans-serif;
      --max-width: 1280px;
      --section-gap: 80px;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: var(--font-sans);
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

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

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s ease;
    }

    button, .btn {
      cursor: pointer;
      font-family: inherit;
      transition: all 0.25s ease;
    }

    .container {
      max-width: var(--max-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 导航 Mega Menu */
    .mega-trigger:hover .mega-panel,
    .mega-trigger:focus-within .mega-panel {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
      pointer-events: auto;
    }

    .mega-panel {
      opacity: 0;
      visibility: hidden;
      transform: translateY(8px);
      transition: all 0.25s ease;
      pointer-events: none;
      position: absolute;
      top: 100%;
      left: 0;
      width: 100%;
      background: white;
      border-radius: 0 0 16px 16px;
      box-shadow: 0 20px 35px rgba(0,0,0,0.08);
      z-index: 50;
      padding: 32px 0;
    }

    /* 移动端菜单checkbox hack */
    #menu-toggle {
      display: none;
    }

    .mobile-menu {
      display: none;
    }

    @media (max-width: 768px) {
      .desktop-nav {
        display: none;
      }
      .mobile-menu {
        display: block;
      }
      #menu-toggle:checked ~ .mobile-nav-panel {
        display: flex;
      }
      .mobile-nav-panel {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        box-shadow: 0 20px 30px rgba(0,0,0,0.1);
        padding: 24px;
        z-index: 60;
        border-radius: 0 0 20px 20px;
      }
      :root {
        --section-gap: 48px;
      }
    }

    /* 细节动画 */
    .hover-lift {
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .hover-lift:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    .faq-details summary {
      list-style: none;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-details summary::-webkit-details-marker {
      display: none;
    }
    .faq-details[open] .faq-arrow {
      transform: rotate(180deg);
    }
    .faq-arrow {
      transition: transform 0.25s ease;
    }

    /* 自定义文字间距 */
    .tight-letter {
      letter-spacing: -0.5px;
    }

    /* 按钮动效 */
    .btn-primary {
      background: var(--accent);
      color: white;
      border-radius: var(--radius-btn);
      padding: 14px 32px;
      font-weight: 600;
      display: inline-block;
      text-align: center;
      box-shadow: 0 4px 12px rgba(230,81,0,0.25);
    }
    .btn-primary:hover {
      background: var(--accent-hover);
      box-shadow: 0 8px 18px rgba(230,81,0,0.35);
      transform: scale(1.02);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--primary);
      color: var(--primary);
      border-radius: var(--radius-btn);
      padding: 14px 32px;
      font-weight: 600;
      display: inline-block;
      text-align: center;
    }
    .btn-outline:hover {
      background: rgba(10,31,47,0.05);
    }

    .btn-white {
      background: white;
      color: var(--accent);
      border-radius: var(--radius-btn);
      padding: 14px 36px;
      font-weight: 700;
      display: inline-block;
      box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    }
    .btn-white:hover {
      transform: scale(1.05);
      box-shadow: 0 12px 24px rgba(0,0,0,0.18);
    }