:root{--color-bg: #f4f6f8;--color-surface: #ffffff;--color-surface-muted: #f8fafc;--color-primary: #2b6cb0;--color-primary-hover: #245a92;--color-primary-soft: #eaf2fb;--color-text: #1a2330;--color-text-muted: #5b6472;--color-border: #e2e6eb;--color-danger: #c53030;--color-danger-soft: #fdecec;--color-success: #2f855a;--color-mark-bg: #fef3c7;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);--shadow-md: 0 8px 24px rgba(15, 23, 42, .08);--font-sans: system-ui, -apple-system, "Segoe UI", sans-serif}body{margin:0;background:var(--color-bg);color:var(--color-text);font-family:var(--font-sans)}