:root{--bg:#f5f6f8;--surface:#fff;--surface-muted:#f3f4f6;--border:#e3e5e9;--border-strong:#cdd1d7;--text:#16181d;--text-muted:#5b6270;--text-dim:#7c8390;--accent:#2563eb;--accent-hover:#1d4fd7;--accent-soft:#eaf0fe;--success:#15803d;--success-strong:#16a34a;--success-hover:#128a3e;--success-soft:#e9f7ee;--danger:#c92a2a;--danger-soft:#fdecec;--warning:#b45309;--warning-soft:#fdf3e3;--code-bg:#111827;--code-gutter:#6b7280;--code-text:#e5e7eb;--radius:8px;--radius-lg:12px;--shadow:0 1px 2px #1018280f;--shadow-lg:0 16px 40px #1018282e;--font-ui:"Segoe UI Variable Text", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, Tahoma, Arial, sans-serif;--font-code:"Cascadia Code", "Cascadia Mono", Consolas, Menlo, Monaco, "Roboto Mono", "Courier New", monospace}*{box-sizing:border-box;scrollbar-width:thin;scrollbar-color:#c4c8cf 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