/* roulang page: index */
:root {
      --primary: #00D084;
      --primary-dark: #00A86B;
      --secondary: #0A192F;
      --accent: #FF6B35;
      --surface-light: #F8FAFC;
      --surface-dark: #0B132B;
      --border-color: rgba(226, 232, 240, 0.8);
      --text-main: #0F172A;
      --text-muted: #64748B;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      color: var(--text-main);
      background-color: #FFFFFF;
      overflow-x: hidden;
      line-height: 1.75;
    }
    .custom-shadow {
      box-shadow: 0 10px 25px -5px rgba(10, 25, 47, 0.08), 0 8px 10px -6px rgba(10, 25, 47, 0.04);
    }
    .custom-shadow-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 30px -10px rgba(0, 208, 132, 0.2);
    }
    .btn-gradient {
      background: linear-gradient(135deg, #00D084 0%, #00B377 100%);
      transition: all 0.3s ease;
    }
    .btn-gradient:hover {
      box-shadow: 0 0 18px rgba(0, 208, 132, 0.45);
      transform: translateY(-1px);
    }
    .btn-accent {
      background: linear-gradient(135deg, #FF6B35 0%, #EA580C 100%);
      transition: all 0.3s ease;
    }
    .btn-accent:hover {
      box-shadow: 0 0 18px rgba(255, 107, 53, 0.4);
      transform: translateY(-1px);
    }