:root{--fg:#1f2328;--fg-muted:#57606a;--fg-subtle:#8b949e;--bg:#fff;--bg-subtle:#f6f8fa;--bg-inset:#eef1f4;--border:#d0d7de;--border-subtle:#f0f1f3;--accent:#0969da;--accent-bg:#ddf4ff;--accent-border:#54aeff;--success:#1f883d;--success-hover:#1a7f37;--warn-fg:#9a6700;--warn-body:#6a5300;--warn-bg:#fff8c5;--warn-border:#f0e2a0;--danger:#cf222e}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--fg);-webkit-font-smoothing:antialiased;margin:0;font:14px/1.5 -apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Segoe UI,sans-serif}button{border:1px solid var(--border);background:var(--bg-subtle);color:var(--fg);cursor:pointer;font:inherit;border-radius:6px;padding:5px 12px;font-size:13px}@media (hover:hover){button:hover:not(:disabled){background:var(--bg-inset)}}button:disabled{opacity:.5;cursor:default}button.primary{background:var(--success);border-color:var(--success);color:#fff}@media (hover:hover){button.primary:hover:not(:disabled){background:var(--success-hover)}}input[type=text],input[type=url]{font:inherit;color:var(--fg)}a.btn{border:1px solid var(--border);background:var(--bg-subtle);color:var(--fg);border-radius:6px;padding:7px 14px;font-size:14px;line-height:1.4;text-decoration:none;display:inline-block}@media (hover:hover){a.btn:hover{background:var(--bg-inset)}}@media (pointer:coarse),(width<=600px){button,a.btn{padding:9px 16px;font-size:15px}}a.btn.primary{background:var(--success);border-color:var(--success);color:#fff}@media (hover:hover){a.btn.primary:hover{background:var(--success-hover)}}.spinner{vertical-align:-2px;border:2px solid;border-right-color:#0000;border-radius:50%;width:14px;height:14px;animation:.8s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}@keyframes shimmer{0%{background-position:100% 0}to{background-position:0 0}}@media (prefers-reduced-motion:reduce){.spinner{animation-duration:1.6s}}