*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--bg-base:#f0f2f5;--bg-surface:#ffffff;--bg-elevated:#f7f8fa;--bg-hover:#eef0f4;--bg-active:#e8eaf0;--border:#e2e5ea;--border-light:#eaecf0;--text-primary:#1a1d23;--text-secondary:#4b5263;--text-muted:#8b92a0;--text-disabled:#c2c8d4;--green:#16a34a;--blue:#2563eb;--purple:#7c3aed;--amber:#d97706;--red:#dc2626;--teal:#0d9488;--sidebar-w:220px;--mono:"ui-monospace","Cascadia Code","Fira Code",monospace}body,html{height:100%;background:var(--bg-base);color:var(--text-primary);font-family:Inter,Segoe UI,system-ui,sans-serif;font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-disabled)}input,select,textarea{background:var(--bg-surface);border:1px solid var(--border);border-radius:8px;color:var(--text-primary);font-family:inherit;font-size:13px;outline:none;transition:border-color .15s}input:focus,select:focus,textarea:focus{border-color:var(--blue)}button{font-family:inherit;cursor:pointer;transition:opacity .15s,background .15s}button:disabled{opacity:.45;cursor:not-allowed}code,pre{font-family:var(--mono)}