:root {
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-accent: #0d9488;
  --color-bg: #f6f8fb;
  --color-surface: #ffffff;
  --color-surface-muted: #f8fafc;
  --color-text-primary: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #64748b;
  --color-border: #dce6ef;
  --color-border-strong: #b6c7d8;
  --color-success: #0d9488;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #2563eb;

  --table-header-bg: #f8fafc;
  --table-header-text: #334155;
  --table-row-bg: #ffffff;
  --table-row-alt-bg: #f8fafc;
  --table-row-hover-bg: #eff6ff;
  --table-frozen-shadow: 6px 0 14px rgba(15, 23, 42, 0.14);

  --chart-revenue: #2563eb;
  --chart-tables: #0d9488;
  --chart-rise: #ef4444;
  --chart-fall: #3b82f6;
  --chart-neutral: #94a3b8;
  --chart-warning: #f59e0b;

  --sab-s-bg: #fee2e2;
  --sab-s-text: #b91c1c;
  --sab-s-accent: #ef4444;
  --sab-a-bg: #fef3c7;
  --sab-a-text: #a16207;
  --sab-a-accent: #facc15;
  --sab-b-bg: #dbeafe;
  --sab-b-text: #1d4ed8;
  --sab-b-accent: #3b82f6;
  --sab-unrated-bg: #e5e7eb;
  --sab-unrated-text: #374151;
  --sab-unrated-accent: #9ca3af;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  --font-number: DIN Alternate, "Roboto Mono", "SF Mono", Consolas, monospace;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-md: 15px;
  --font-size-lg: 17px;
  --font-size-xl: 20px;
  --font-size-display: 26px;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-tight: 1.2;
  --line-height-normal: 1.45;
  --line-height-relaxed: 1.65;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --mobile-page-padding: 14px;
  --mobile-section-gap: 12px;
  --mobile-bottom-nav-height: 72px;
  --pc-page-padding: 24px;
  --pc-panel-gap: 16px;

  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-pill: 999px;

  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.12);
  --shadow-bottom-nav: 0 -10px 26px rgba(15, 23, 42, 0.10);
}