:root{--primary:#6366f1;--primary-light:#818cf8;--primary-bg:#6366f114;--primary-border:#6366f14d;--surface:#fff;--surface-hover:#f8f9fa;--bg:#f5f3f0;--text:#374151;--text-secondary:#6b7280;--text-muted:#9ca3af;--border:#e5e7eb;--border-light:#f0f0f0;--success:#10b981;--warning:#f59e0b;--danger:#ef4444;--shadow-sm:0 1px 2px #0000000d;--shadow:0 1px 3px #0000001a, 0 1px 2px #0000000f;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -2px #0000000d;--radius:8px;--radius-lg:12px;--radius-xl:16px;--font-sans:"Inter", "Noto Sans SC", system-ui, -apple-system, sans-serif;--font-serif:"Noto Serif SC", "Source Han Serif CN", Georgia, serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background:var(--bg);color:var(--text);min-height:100vh;line-height:1.6}#root{min-height:100vh}.app{flex-direction:column;min-height:100vh;display:flex}.app-header{background:var(--surface);border-bottom:1px solid 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