:root{--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--bg:#f6f7f9;--surface:#ffffff;--surface-hover:#f1f3f6;--border:#e3e7ed;--border-strong:#c9d0db;--text:#16181d;--text-secondary:#5b6472;--text-muted:#8a92a0;--accent:#2f5fe0;--accent-hover:#2850c2;--accent-soft:#eaf0ff;--graphite:#3c4350;--success:#1a8a4a;--success-soft:#e6f6ec;--warning:#b5750a;--warning-soft:#fdf1df;--danger:#c23b3b;--danger-soft:#fbeaea;--radius-sm:6px;--radius:10px;--radius-lg:14px;--shadow-sm:0 1px 2px rgba(16,24,40,0.06);--shadow:0 2px 8px 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