:root {
  --primary: #2563eb;
  --primary-light: #3b82f6;
  --primary-dark: #1d4ed8;
  --primary-bg: #eff6ff;
  --accent: #f59e0b;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --bg-card: #ffffff;
  --text: #0f172a;
  --text-secondary: #64748b;
  --text-tertiary: #94a3b8;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-full: 50px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "SF Mono", "Consolas", monospace;
  --max-width: 1200px;
  --nav-height: 64px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --footer-bg: #0f172a;
  --footer-text: #cbd5e1;
  --footer-link: #64748b;
  --footer-link-hover: #fff;
  --footer-border: #1e293b;
  --footer-sep: #334155;
  --footer-social-color: #94a3b8;
  --footer-social-hover-bg: rgba(255,255,255,0.08);
  --footer-manage-link: #64748b;
  --comment-awaiting-color: #f59e0b;
  --cancel-reply-color: #ef4444;
  --success-color: #22c55e;
  --error-color: #ef4444;
  --qrcode-close-bg: #ef4444;
  --qrcode-close-shadow: rgba(239, 68, 68, 0.4);
  --qrcode-content-bg: #fff;
  --code-bg: #1e1e1e;
  --code-color: #d4d4d4;
  --code-scrollbar-track: #1e1e1e;
  --code-scrollbar-thumb: #555;
  --ad-footer-bg: #1e293b;
  --ad-footer-before-color: #475569;
  --focus-ring: rgba(37, 99, 235, 0.1);
}

[data-theme="dark"] {
  --primary: #569cd6;
  --primary-light: #75beff;
  --primary-dark: #3b82f6;
  --primary-bg: #1a1a2e;
  --bg: #000000;
  --bg-alt: #0a0a0a;
  --bg-card: #0d0d0d;
  --text: #d4d4d4;
  --text-secondary: #858585;
  --text-tertiary: #6e6e6e;
  --border: #2a2a2a;
  --border-light: #1a1a1a;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow: 0 1px 3px rgba(0,0,0,0.5), 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.6);
  --footer-bg: #000000;
  --footer-border: #1a1a1a;
  --qrcode-content-bg: #1a1a1a;
  --ad-footer-bg: #000000;
  --focus-ring: rgba(86, 156, 214, 0.15);
}