/* roulang page: index */
:root {
      --deep-black: #0A0E17;
      --bamboo-green: #4ADE80;
      --warm-amber: #F59E0B;
      --glass-bg: rgba(255, 255, 255, 0.03);
      --glass-border: rgba(255, 255, 255, 0.08);
      --glass-border-hover: rgba(255, 255, 255, 0.15);
      --text-primary: #FFFFFF;
      --text-secondary: #CBD5E1;
      --text-muted: #94A3B8;
      --radius-lg: 16px;
      --radius-md: 12px;
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
      --glow-green: 0 0 20px rgba(74, 222, 128, 0.4);
      --glow-green-strong: 0 0 30px rgba(74, 222, 128, 0.7);
    }

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

    body {
      background-color: var(--deep-black);
      color: var(--text-secondary);
      font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    /* 自定义玻璃拟态工具类 */
    .glass-panel {
      background: rgba(10, 14, 23, 0.55);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-card);
    }

    .glass-card {
      background: rgba(255, 255, 255, 0.03);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-md);
      transition: all 300ms ease;
    }

    .glass-card:hover {
      border-color: var(--glass-border-hover);
      background: rgba(255, 255, 255, 0.06);
      transform: translateY(-2px);
      box-shadow: 0 12px 28px rgba(0,0,0,0.5);
    }

    /* 发光按钮 */
    .btn-glow {
      background-color: var(--bamboo-green);
      color: var(--deep-black);
      font-weight: 600;
      padding: 12px 28px;
      border-radius: 999px;
      border: none;
      box-shadow: var(--glow-green);
      transition: all 300ms ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      letter-spacing: 0.3px;
    }

    .btn-glow:hover {
      box-shadow: var(--glow-green-strong);
      background-color: #6ee799;
      transform: scale(1.02);
    }

    .btn-ghost {
      background: transparent;
      border: 1px solid var(--bamboo-green);
      color: var(--bamboo-green);
      font-weight: 600;
      padding: 12px 28px;
      border-radius: 999px;
      transition: all 300ms ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
    }

    .btn-ghost:hover {
      background: rgba(74, 222, 128, 0.1);
      border-color: #6ee799;
      color: #6ee799;
    }

    /* 导航浮动Dock */
    .nav-dock {
      background: rgba(10, 14, 23, 0.65);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border: 1px solid rgba(255, 255, 255, 0.06);
      border-radius: 999px;
      transition: background 300ms ease, backdrop-filter 300ms ease;
    }

    .nav-dock.scrolled {
      background: rgba(10, 14, 23, 0.85);
      backdrop-filter: blur(24px);
    }

    /* 数字闪烁动画 */
    @keyframes pulse-amber {
      0% { color: var(--warm-amber); text-shadow: 0 0 8px rgba(245, 158, 11, 0.5); }
      50% { color: #FCD34D; text-shadow: 0 0 16px rgba(245, 158, 11, 0.8); }
      100% { color: var(--warm-amber); text-shadow: 0 0 8px rgba(245, 158, 11, 0.5); }
    }

    .live-number {
      animation: pulse-amber 2s infinite;
      font-family: 'Inter', 'SF Mono', monospace;
      font-weight: 700;
    }

    /* FAQ手风琴 */
    .faq-item {
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .faq-question {
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 0;
      font-weight: 600;
      color: white;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.3s ease;
      color: #CBD5E1;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding-bottom: 16px;
    }
    .faq-icon {
      transition: transform 0.3s ease;
      font-size: 1.5rem;
      color: var(--bamboo-green);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* 表单聚焦发光 */
    .form-input {
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: 12px;
      padding: 14px 18px;
      color: white;
      transition: all 0.2s ease;
      width: 100%;
      outline: none;
    }
    .form-input:focus {
      border-color: var(--bamboo-green);
      box-shadow: 0 0 0 3px rgba(74, 222, 128, 0.25);
    }

    /* 自定义滚动条 */
    ::-webkit-scrollbar {
      width: 6px;
    }
    ::-webkit-scrollbar-track {
      background: #0A0E17;
    }
    ::-webkit-scrollbar-thumb {
      background: #2D3748;
      border-radius: 3px;
    }

    /* 移动端底部导航适配 */
    @media (max-width: 768px) {
      .nav-dock {
        border-radius: 40px;
        bottom: 16px;
        top: auto !important;
        width: 92%;
        left: 4%;
        padding: 8px 16px;
      }
      .desktop-logo-text {
        display: none;
      }
      .mobile-logo-icon {
        display: block;
      }
    }
    @media (min-width: 769px) {
      .mobile-logo-icon {
        display: none;
      }
    }