/* roulang page: index */
:root {
      --color-primary: #0284C7;
      --color-primary-hover: #0369A1;
      --color-bg-dark: #0F141C;
      --color-bg-light: #F8FAFC;
      --color-card-dark: #161F2E;
      --color-text-main: #0F172A;
      --color-text-muted: #64748B;
      --radius-standard: 12px;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      color: #334155;
      background-color: #FFFFFF;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
    }
    .custom-scroll::-webkit-scrollbar {
      height: 6px;
      width: 6px;
    }
    .custom-scroll::-webkit-scrollbar-thumb {
      background: rgba(148, 163, 184, 0.4);
      border-radius: 4px;
    }
    .pulse-dot {
      animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
    }
    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: .4; transform: scale(1.15); }
    }