/* roulang page: index */
:root {
      --primary: #0A2540;
      --accent: #00D4B2;
      --bg-light: #F8FAFC;
      --bg-dark: #071524;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --radius-lg: 16px;
      --radius-md: 12px;
      --shadow-soft: 0 10px 30px -5px rgba(10, 37, 64, 0.08);
    }
    
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    
    body {
      color: var(--text-main);
      background-color: #ffffff;
      line-height: 1.65;
      overflow-x: hidden;
    }

    /* 容器基准 */
    .app-container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }

    /* 交互动效 */
    .btn-glow {
      background: #00D4B2;
      color: #0A2540;
      font-weight: 600;
      transition: all 0.25s ease;
    }
    .btn-glow:hover {
      background: #00be9f;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(0, 212, 178, 0.35);
    }

    .btn-navy {
      background: #0A2540;
      color: #ffffff;
      font-weight: 600;
      transition: all 0.25s ease;
    }
    .btn-navy:hover {
      background: #14385e;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(10, 37, 64, 0.25);
    }

    .card-hover-box {
      background: #ffffff;
      border: 1px solid #E2E8F0;
      border-radius: var(--radius-md);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-hover-box:hover {
      border-color: #00D4B2;
      transform: translateY(-4px);
      box-shadow: 0 16px 32px rgba(10, 37, 64, 0.08);
    }

    /* 手风琴隐藏细节 */
    details > summary {
      list-style: none;
    }
    details > summary::-webkit-details-marker {
      display: none;
    }
    details[open] summary svg {
      transform: rotate(180deg);
    }