/* roulang page: index */
:root {
      --primary: #00D084;
      --primary-hover: #00B371;
      --accent: #3B82F6;
      --dark-bg: #0A0F1D;
      --card-dark: #131B2E;
      --page-bg: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
    }

    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

    body {
      background-color: var(--page-bg);
      color: #334155;
      overflow-x: hidden;
      line-height: 1.75;
    }

    .glass-nav {
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      background: rgba(255, 255, 255, 0.92);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    }

    .badge-chip {
      background: rgba(0, 208, 132, 0.12);
      color: #008753;
      border: 1px solid rgba(0, 208, 132, 0.3);
    }

    .radar-grid {
      background-size: 28px 28px;
      background-image: 
        linear-gradient(to right, rgba(0, 208, 132, 0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0, 208, 132, 0.05) 1px, transparent 1px);
    }

    details summary::-webkit-details-marker {
      display: none;
    }

    details[open] summary .faq-icon {
      transform: rotate(180deg);
    }

    .hero-glow {
      position: absolute;
      width: 480px;
      height: 480px;
      background: radial-gradient(circle, rgba(0, 208, 132, 0.15) 0%, rgba(59, 130, 246, 0.05) 60%, transparent 80%);
      top: -100px;
      right: -80px;
      pointer-events: none;
      z-index: 0;
    }