/* roulang page: index */
:root {
        --color-primary: #1E40AF;
        --color-primary-hover: #1D4ED8;
        --color-accent: #D97706;
        --color-bg-base: #F8FAFC;
        --color-bg-card: #FFFFFF;
        --color-text-main: #0F172A;
        --color-text-muted: #475569;
        --color-border: #E2E8F0;
        --shadow-card: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
        --shadow-hover: 0 20px 25px -5px rgba(30, 64, 175, 0.1), 0 8px 10px -6px rgba(30, 64, 175, 0.05);
      }
      body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        background-color: var(--color-bg-base);
        color: var(--color-text-main);
      }
      .card-shadow {
        box-shadow: var(--shadow-card);
        transition: transform 0.25s ease, box-shadow 0.25s ease;
      }
      .card-shadow:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
      }
      .radar-wave {
        position: relative;
      }
      .radar-wave::after {
        content: '';
        position: absolute;
        width: 100%;
        height: 100%;
        top: 0;
        left: 0;
        border-radius: 9999px;
        background-color: rgba(217, 119, 6, 0.2);
        animation: radarPing 2s cubic-bezier(0, 0, 0.2, 1) infinite;
      }
      @keyframes radarPing {
        75%, 100% {
          transform: scale(2);
          opacity: 0;
        }
      }