/* roulang page: index */
:root {
      --primary: #0F766E;
      --primary-hover: #115E59;
      --bg-dark: #0B0F17;
      --text-main: #0F172A;
      --text-sub: #334155;
      --border-light: #E2E8F0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #F8FAFC;
    }
    .custom-card {
      background: #FFFFFF;
      border: 1px solid rgba(226, 232, 240, 0.8);
      border-radius: 14px;
      transition: all 0.25s ease-in-out;
    }
    .custom-card:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 30px -4px rgba(15, 23, 42, 0.06);
    }
    .hero-mask {
      background: linear-gradient(135deg, rgba(11, 15, 23, 0.88) 0%, rgba(15, 118, 110, 0.82) 100%);
    }