:root{--bg:#f9fafb;--panel:#ffffff;--ink:#111827;--muted:#6b7280;--tertiary:#9ca3af;--line:#e5e7eb;--primary:#06b6d4;--primary-light:#67e8f9;--primary-soft:rgba(103,232,249,0.22);--primary-dark:#0891b2;--secondary:#fbbf24;--secondary-soft:#fef3c7;--red:#ef4444;--red-soft:#fee2e2;--info:#3b82f6;--info-soft:#dbeafe;--purple:#8b5cf6;--purple-soft:#ede9fe;--gray-50:#f9fafb;--gray-100:#f3f4f6;--gray-200:#e5e7eb;--gray-400:#9ca3af;--gray-600:#4b5563;--shadow:0 2px 8px rgba(0,0,0,0.1);--shadow-strong:0 4px 12px rgba(0,0,0,0.1)}*{box-sizing:border-box}body{margin:0;min-height:100vh;color:var(--ink);background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans SC,PingFang SC,Microsoft YaHei,sans-serif}button,input,select{font:inherit}code{padding:.12rem 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