/* roulang page: index */
:root {
      --brand-green: #00E575;
      --brand-green-hover: #05C46B;
      --brand-dark: #0F172A;
      --brand-surface: #0B1120;
      --brand-card: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #334155;
      --border-color: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
      font-family: Inter, -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    .custom-card-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
    }
    .hero-bg-overlay {
      background: linear-gradient(135deg, rgba(11, 17, 32, 0.94) 0%, rgba(15, 23, 42, 0.88) 100%);
    }
    .accent-glow {
      box-shadow: 0 0 25px -5px rgba(0, 229, 117, 0.3);
    }