*,:before,:after{box-sizing:border-box}:root{--primary:#667eea;--primary-dark:#764ba2;--bg:#fff;--bg-gray:#f7f7f8;--text:#333;--text-light:#6b7280;--border:#e5e7eb;color:var(--text);background:var(--bg);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:16px;line-height:1.5}body{margin:0;padding:0;overflow:hidden}#app{width:100%;min-height:100vh}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#9ca3af}