/* roulang page: index */
:root {
      --primary-color: #10B981;
      --primary-hover: #059669;
      --accent-cyan: #06B6D4;
      --dark-bg: #0B0F19;
      --card-radius: 16px;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    }
    body {
      background-color: #F8FAFC;
      color: #1E293B;
      line-height: 1.75;
      overflow-x: hidden;
    }
    .hero-mask {
      background: linear-gradient(135deg, rgba(11, 15, 25, 0.92) 0%, rgba(15, 23, 42, 0.85) 60%, rgba(6, 182, 212, 0.4) 100%);
    }
    .custom-shadow {
      box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
    }
    .custom-shadow-hover:hover {
      box-shadow: 0 20px 30px -10px rgba(16, 185, 129, 0.15), 0 10px 15px -5px rgba(0, 0, 0, 0.04);
      transform: translateY(-4px);
    }
    /* 脉冲绿色指示灯 */
    .pulse-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: #10B981;
      box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
      animation: pulse 1.8s infinite cubic-bezier(0.66, 0, 0, 1);
    }
    @keyframes pulse {
      to {
        box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
      }
    }