/* roulang page: index */
:root {
      --primary-color: #0f172a;
      --accent-color: #f59e0b;
      --secondary-emerald: #10b981;
      --action-orange: #f97316;
      --bg-light: #f8fafc;
      --bg-white: #ffffff;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --card-radius: 1rem;
      --glow-shadow: 0 10px 25px -5px rgba(245, 158, 11, 0.25);
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.75;
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .hero-glow-bg {
      background: radial-gradient(circle at 50% 30%, rgba(245, 158, 11, 0.12), rgba(15, 23, 42, 0.98) 75%), 
                  url('/assets/images/918d764bb9817beb.jpg') center/cover no-repeat;
    }
    .volleyball-court-grid {
      background-size: 40px 40px;
      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);
    }
    .dark-court-grid {
      background-size: 40px 40px;
      background-image: 
        linear-gradient(to right, rgba(51, 65, 85, 0.4) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(51, 65, 85, 0.4) 1px, transparent 1px);
    }
    .glass-card {
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(226, 232, 240, 0.8);
    }
    .glass-dark-card {
      background: rgba(30, 41, 59, 0.85);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(51, 65, 85, 0.8);
    }
    .cta-button-glow {
      box-shadow: 0 4px 20px -2px rgba(249, 115, 22, 0.45);
      transition: all 0.3s ease;
    }
    .cta-button-glow:hover {
      box-shadow: 0 8px 25px 0 rgba(249, 115, 22, 0.6);
      transform: translateY(-2px);
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
    }
    .accordion-open .accordion-content {
      max-height: 400px;
    }
    .accordion-open .chevron-icon {
      transform: rotate(180deg);
    }
    .metric-glow-text {
      text-shadow: 0 0 20px rgba(245, 158, 11, 0.3);
    }