/* roulang page: index */
:root {
      --primary: #0F2444;
      --primary-dark: #0B1528;
      --accent-cyan: #0084FF;
      --accent-emerald: #00B578;
      --warning-amber: #D97706;
      --bg-base: #F6F8FB;
      --text-main: #111827;
      --text-muted: #4B5563;
      --border-color: #E2E8F0;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }
    .custom-shadow {
      box-shadow: 0 1px 3px rgba(15, 36, 68, 0.05);
      transition: all 0.25s ease-in-out;
    }
    .custom-shadow:hover {
      box-shadow: 0 12px 30px -6px rgba(15, 36, 68, 0.12);
      transform: translateY(-2px);
    }
    .dark-card-glow {
      box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }
    /* 手风琴平滑动效 */
    details summary::-webkit-details-marker {
      display: none;
    }
    details[open] summary svg {
      transform: rotate(180deg);
    }
    /* 表单输入轮廓聚焦 */
    input:focus, select:focus, textarea:focus {
      outline: none;
      border-color: var(--accent-cyan);
      box-shadow: 0 0 0 3px rgba(0, 132, 255, 0.18);
    }