/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    
    :root {
      --primary: #0A0F0A;
      --accent: #C8FF00;
      --bg-light: #F4F4F0;
      --card-bg: #1C241C;
      --text-primary: #0A0F0A;
      --text-secondary: #5A605A;
      --text-light: #B0B5B0;
      --border-light: rgba(10, 15, 10, 0.08);
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-input: 6px;
      --shadow-sm: 0 4px 12px rgba(0,0,0,0.04);
      --shadow-md: 0 8px 30px rgba(0,0,0,0.06);
      --transition-base: 0.2s ease;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
      background-color: var(--bg-light);
      color: var(--text-primary);
      line-height: 1.8;
      margin: 0;
      -webkit-font-smoothing: antialiased;
    }

    /* 自定义滚动条 */
    ::-webkit-scrollbar {
      width: 6px;
    }
    ::-webkit-scrollbar-track {
      background: transparent;
    }
    ::-webkit-scrollbar-thumb {
      background: rgba(10,15,10,0.2);
      border-radius: 12px;
    }

    .container-custom {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 导航毛玻璃效果 */
    .nav-glass {
      background: rgba(244, 244, 240, 0.8);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      transition: background 0.3s ease, box-shadow 0.3s ease;
    }
    .nav-scrolled {
      background: rgba(244, 244, 240, 0.95);
      box-shadow: 0 4px 20px rgba(0,0,0,0.04);
    }

    /* 导航链接下划线动画 */
    .nav-link {
      position: relative;
      transition: color var(--transition-base);
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--accent);
      transition: width var(--transition-base);
    }
    .nav-link:hover::after,
    .nav-link.active::after {
      width: 100%;
    }

    /* 蜂鸟轨迹动画 */
    @keyframes hummingbird-flight {
      0% { stroke-dashoffset: 1000; opacity: 0.4; }
      40% { opacity: 0.9; }
      100% { stroke-dashoffset: 0; opacity: 0.5; }
    }
    .flight-path {
      stroke-dasharray: 1000;
      animation: hummingbird-flight 4s ease-in-out infinite alternate;
    }

    /* 卡片hover效果 */
    .card-hover {
      transition: transform var(--transition-base), box-shadow var(--transition-base);
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    /* FAQ手风琴动画 */
    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .faq-toggle:checked ~ .faq-content {
      max-height: 300px;
    }
    .faq-icon {
      transition: transform 0.3s ease;
    }
    .faq-toggle:checked ~ .faq-header .faq-icon {
      transform: rotate(45deg);
    }

    /* 移动端底部Tab */
    .mobile-tab {
      transition: color 0.2s, background 0.2s;
    }
    .mobile-tab.active {
      color: var(--accent);
    }

    @media (max-width: 767px) {
      .container-custom {
        padding-left: 20px;
        padding-right: 20px;
      }
      .desktop-nav {
        display: none !important;
      }
      .mobile-bottom-nav {
        display: flex;
      }
    }
    @media (min-width: 768px) {
      .mobile-bottom-nav {
        display: none !important;
      }
      .desktop-nav {
        display: flex;
      }
      .mobile-menu-btn {
        display: none;
      }
    }