:root{--color-bg: #ffffff;--color-text-primary: #0a0a0a;--color-text-secondary: #6b7280;--color-text-tertiary: #9ca3af;--color-border: #e5e7eb;--color-border-strong: #d1d5db;--color-accent: #2563eb;--color-accent-hover: #1d4ed8;--color-accent-bg-soft: #eff6ff;--color-danger: #dc2626;--color-success: #10b981;--font-family-base: "PingFang SC", "Microsoft YaHei", Inter, system-ui, -apple-system, sans-serif;--font-mono: "JetBrains Mono", Menlo, Monaco, Consolas, monospace;--fs-h1: 20px;--fs-data: 16px;--fs-body: 14px;--fs-h2: 14px;--fs-label: 14px;--fs-small: 13px;--fw-regular: 400;--fw-medium: 500;--fw-semibold: 600;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--space-7: 48px;--radius-sm: 4px;--radius-md: 6px;--radius-lg: 8px;--radius-xl: 12px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .04);--shadow-md: 0 1px 3px 0 rgba(0, 0, 0, .06), 0 1px 2px 0 rgba(0, 0, 0, .04);--container-max-width: 500px}html,body{margin:0;padding:0;background:var(--color-bg);color:var(--color-text-primary);font-family:var(--font-family-base);font-size:var(--fs-body);font-weight:var(--fw-regular);line-height:1.5;-webkit-font-smoothing:antialiased;-webkit-font-feature-settings:"tnum" on;font-feature-settings:"tnum" on}*{-webkit-box-sizing:border-box;box-sizing:border-box}a{color:var(--color-accent);text-decoration:none}a:hover{color:var(--color-accent-hover)}input,textarea,button{font-family:inherit}