/* roulang page: index */
:root {
      --primary-color: #059669;
      --accent-color: #00C4DF;
      --bg-light: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #475569;
      --border-color: #E2E8F0;
    }
    body {
      font-family: 'PingFang SC', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      color: var(--text-main);
      background-color: #FFFFFF;
      overflow-x: hidden;
      line-height: 1.7;
    }
    .code-terminal {
      background-color: #090D16;
      border: 1px solid #1E293B;
      font-family: 'JetBrains Mono', monospace;
    }
    .bg-grid-pattern {
      background-size: 32px 32px;
      background-image: 
        linear-gradient(to right, rgba(226, 232, 240, 0.4) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(226, 232, 240, 0.4) 1px, transparent 1px);
    }
    .bg-grid-dark {
      background-size: 32px 32px;
      background-image: 
        linear-gradient(to right, rgba(30, 41, 59, 0.5) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(30, 41, 59, 0.5) 1px, transparent 1px);
    }
    .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: pulseGreen 2s infinite;
    }
    @keyframes pulseGreen {
      0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
      }
      70% {
        transform: scale(1);
        box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
      }
      100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
      }
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out, opacity 0.25s ease-out;
      opacity: 0;
    }
    .faq-item.active .faq-answer {
      max-height: 500px;
      opacity: 1;
    }
    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
    }