/* roulang page: index */
:root {
      --primary: #0D7A5F;
      --primary-hover: #0A624C;
      --accent: #D97706;
      --bg-light: #F8FAF9;
      --text-main: #0F172A;
      --text-muted: #334155;
      --text-sub: #64748B;
      --border-color: #E2E8F0;
    }
    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: var(--bg-light);
      overflow-x: hidden;
      line-height: 1.75;
    }
    .clip-hero {
      clip-path: polygon(0 0, 100% 0, 100% 95%, 0 100%);
    }
    .card-shadow {
      box-shadow: 0 4px 20px -2px rgba(13, 122, 95, 0.08);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-shadow:hover {
      box-shadow: 0 14px 30px -4px rgba(13, 122, 95, 0.16);
      transform: translateY(-4px);
    }