:root {
  color-scheme: light;
  --bg-primary: #f8f9fb;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f3f6;
  --bg-elevated: #ffffff;
  --surface-glass: #ffffff;
  --surface-glow: rgba(37, 99, 235, 0.08);
  --text-primary: #1a1f36;
  --text-secondary: #4a5568;
  --text-muted: #8492a6;
  --accent-primary: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-glow: rgba(37, 99, 235, 0.12);
  --stage-a: #d97706;
  --stage-b: #059669;
  --stage-c: #4f46e5;
  --stage-d: #db2777;
  --success: #16a34a;
  --warning: #d97706;
  --error: #dc2626;
  --info: #0284c7;
  --border-default: #e2e8f0;
  --border-hover: #cbd5e1;
  --shadow-soft: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-strong: 0 10px 30px rgba(15, 23, 42, 0.10);
  --radius-xl: 12px;
  --radius-lg: 10px;
  --radius-md: 8px;
  --radius-sm: 6px;
  --font-heading: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "Consolas", monospace;
  --container-width: min(1440px, calc(100vw - 32px));
  --page-gap: 18px;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body.portal-body { position: relative; color: var(--text-primary); font-family: var(--font-body); background: var(--bg-primary); }
body.portal-body::before, body.portal-body::after { display: none; }
a { color: inherit; }