/* roulang page: index */
:root {
      --primary: #06b6d4;
      --primary-dark: #0891b2;
      --bg-dark: #020617;
      --text-main: #0f172a;
      --text-muted: #475569;
    }
    body {
      font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', -apple-system, sans-serif;
      color: var(--text-main);
      background-color: #f8fafc;
    }
    .grid-mesh {
      background-image: radial-gradient(rgba(6, 182, 212, 0.12) 1px, transparent 1px), radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
      background-size: 28px 28px;
    }
    .tech-border {
      border: 1px solid rgba(226, 232, 240, 0.8);
      transition: all 0.25s ease-in-out;
    }
    .tech-border:hover {
      border-color: #06b6d4;
      box-shadow: 0 10px 25px -5px rgba(6, 182, 212, 0.12), 0 8px 10px -6px rgba(6, 182, 212, 0.08);
      transform: translateY(-2px);
    }
    /* 原生手风琴平滑旋转效果 */
    details[open] summary svg {
      transform: rotate(180deg);
    }