/* roulang page: index */
:root {
      --color-brand: #00C853;
      --color-brand-emerald: #10B981;
      --color-accent: #FF6D00;
      --color-bg-dark: #0F172A;
      --color-bg-light: #F8FAFC;
      --color-text-main: #0F172A;
      --color-text-body: #334155;
      --color-text-muted: #64748B;
      --color-border: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
      -webkit-font-smoothing: antialiased;
    }
    body {
      background-color: var(--color-bg-light);
      color: var(--color-text-body);
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
    }
    .hero-skew-cut {
      clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
    }
    @media (max-width: 768px) {
      .hero-skew-cut {
        clip-path: polygon(0 0, 100% 0, 100% 96%, 0 100%);
      }
    }
    .custom-card-hover {
      transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-card-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 32px -8px rgba(0, 200, 83, 0.12), 0 8px 16px -6px rgba(15, 23, 42, 0.08);
      border-color: rgba(16, 185, 129, 0.35);
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    .pulse-btn {
      box-shadow: 0 0 0 0 rgba(255, 109, 0, 0.6);
      animation: pulse-ring 2.2s infinite cubic-bezier(0.66, 0, 0, 1);
    }
    @keyframes pulse-ring {
      to {
        box-shadow: 0 0 0 14px rgba(255, 109, 0, 0);
      }
    }
    .stat-glow {
      background: radial-gradient(circle at 50% 50%, rgba(16, 185, 129, 0.08) 0%, transparent 70%);
    }