*{box-sizing:border-box}
:root{--bg:#f7f7f8;--side:#ffffff;--line:#e5e7eb;--txt:#1f2328;--mut:#6b7280;--pri:#2563eb;--pri2:#1d4ed8;--bad:#dc2626;--ok:#16a34a;--code:#0f172a}
html,body{margin:0;height:100%;background:var(--bg);color:var(--txt);font-family:-apple-system,"PingFang SC","Microsoft YaHei",Segoe UI,Roboto,sans-serif;font-size:15px}
button{font:inherit;cursor:pointer;border:1px solid var(--line);background:#fff;border-radius:8px;padding:7px 12px;color:var(--txt)}
button:hover{border-color:#c7cbd1}button.pri{background:var(--pri);border-color:var(--pri);color:#fff}button.pri:hover{background:var(--pri2)}
button.danger{color:var(--bad)}button:disabled{opacity:.5;cursor:not-allowed}
input,select,textarea{font:inherit;border:1px solid var(--line);border-radius:8px;padding:8px 10px;background:#fff;color:var(--txt);outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--pri)}
a{color:var(--pri)}
.mut{color:var(--mut)}.sm{font-size:12px}.err{color:var(--bad)}.ok{color:var(--ok)}
.toast{position:fixed;left:50%;top:18px;transform:translateX(-50%);background:#111827;color:#fff;padding:9px 16px;border-radius:8px;font-size:14px;z-index:99;display:none;max-width:90vw}
/* markdown */
.md p{margin:.5em 0;line-height:1.7}.md h1,.md h2,.md h3,.md h4{margin:.9em 0 .4em;line-height:1.35}.md h1{font-size:1.4em}.md h2{font-size:1.25em}.md h3{font-size:1.1em}
.md ul,.md ol{padding-left:1.6em;margin:.4em 0}.md li{margin:.2em 0;line-height:1.65}
.md code{background:#eef0f3;padding:1px 5px;border-radius:4px;font-family:Consolas,Menlo,monospace;font-size:.9em}
.md pre{background:var(--code);color:#e2e8f0;padding:12px 14px;border-radius:8px;overflow:auto;position:relative;margin:.6em 0}
.md pre code{background:none;padding:0;color:inherit;font-size:13px;line-height:1.55}
.md .cb-h{display:flex;justify-content:space-between;align-items:center;background:#1e293b;color:#94a3b8;font-size:12px;padding:5px 10px;border-radius:8px 8px 0 0;margin-top:.6em}
.md .cb-h+pre{margin-top:0;border-radius:0 0 8px 8px}
.md .cb-h button{background:none;border:0;color:#94a3b8;padding:0 4px;font-size:12px}.md .cb-h button:hover{color:#fff}
.md blockquote{border-left:3px solid #d1d5db;margin:.5em 0;padding:.1em .9em;color:#4b5563}
.md table{border-collapse:collapse;margin:.6em 0;display:block;overflow:auto}.md th,.md td{border:1px solid var(--line);padding:5px 10px}.md th{background:#f3f4f6}
.md hr{border:0;border-top:1px solid var(--line);margin:1em 0}