/* roulang page: index */
:root {
      --primary: #0F52BA;
      --primary-dark: #0A3B86;
      --secondary: #2563EB;
      --accent: #0284C7;
      --success: #10B981;
      --bg-page: #F8FAFC;
      --bg-card: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --border-subtle: #E2E8F0;
    }
    body {
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      overflow-x: hidden;
    }
    .shadow-soft {
      box-shadow: 0 1px 3px 0 rgb(15 23 42 / 0.05), 0 1px 2px -1px rgb(15 23 42 / 0.05);
    }
    .shadow-hover {
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .shadow-hover:hover {
      box-shadow: 0 12px 28px -5px rgb(15 82 186 / 0.12), 0 8px 10px -6px rgb(15 82 186 / 0.06);
      transform: translateY(-4px);
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    .clip-diagonal {
      clip-path: polygon(0 0, 100% 0, 100% 95%, 0 100%);
    }