:root{
  --bg:#f5f6f8;--card:#fff;--ink:#1d2433;--muted:#6b7280;--line:#e3e6eb;
  --pri:#1f5fbf;--pri-soft:#e8f0fc;--ok:#1f8a4c;--ok-soft:#e6f4ec;--warn:#b45309;--warn-soft:#fdf2e3;--bad:#b42318;
  --ai:#f3f4f6;--me:#e8f0fc;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.6 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}
a{color:var(--pri);text-decoration:none}
.top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.brand{font-weight:700;font-size:17px;color:var(--ink)}
#nav{display:flex;gap:12px;align-items:center;font-size:14px;flex-wrap:wrap}
main{max-width:1100px;margin:0 auto;padding:16px}
h1{font-size:22px;margin:4px 0 12px}h2{font-size:18px;margin:18px 0 10px}h3{font-size:16px;margin:14px 0 8px}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px;margin-bottom:14px}
.muted{color:var(--muted)}.small{font-size:13px}.center{text-align:center}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.grow{flex:1;min-width:0}
input,textarea,select{width:100%;font:inherit;padding:9px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink)}
textarea{min-height:110px;resize:vertical}
label{display:block;font-size:13px;color:var(--muted);margin:10px 0 4px}
button,.btn{white-space:nowrap;font:inherit;border:1px solid var(--pri);background:var(--pri);color:#fff;padding:8px 14px;border-radius:8px;cursor:pointer;display:inline-block}
button.ghost,.btn.ghost{background:#fff;color:var(--pri)}
button.link{border:none;background:none;color:var(--pri);padding:0}
button:disabled{opacity:.5;cursor:default}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{border-bottom:1px solid var(--line);padding:8px 6px;text-align:left;vertical-align:top}
th{color:var(--muted);font-weight:500}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:14px;overflow-x:auto}
.tabs a{padding:8px 14px;color:var(--muted);border-bottom:2px solid transparent;white-space:nowrap}
.tabs a.on{color:var(--pri);border-color:var(--pri);font-weight:600}
.steps{display:grid;grid-template-columns:repeat(7,1fr);gap:6px;margin-bottom:14px}
.steps a{display:block;text-align:center;padding:8px 4px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);font-size:13px;line-height:1.3}
.steps a b{display:block;font-size:16px}
.steps a.done{background:var(--ok-soft);border-color:#b7dfc6}
.steps a.cur{outline:2px solid var(--pri)}
.steps a.on{background:var(--pri);color:#fff;border-color:var(--pri)}
.layout{display:grid;grid-template-columns:1.1fr 1fr;gap:14px}
.qs{margin:6px 0 0;padding-left:20px;color:#374151}
.tag{display:inline-block;font-size:12px;padding:1px 8px;border-radius:10px;background:var(--pri-soft);color:var(--pri)}
.tag.ok{background:var(--ok-soft);color:var(--ok)}.tag.warn{background:var(--warn-soft);color:var(--warn)}
.chat{display:flex;flex-direction:column;height:520px}
.msgs{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:8px;padding:4px 2px 10px}
.msg{max-width:88%;padding:8px 11px;border-radius:10px;white-space:pre-wrap;word-break:break-word}
.msg.assistant{background:var(--ai);align-self:flex-start}
.msg.user{background:var(--me);align-self:flex-end}
.msg .who{font-size:12px;color:var(--muted);margin-bottom:2px}
.chatin{display:flex;gap:8px}.chatin textarea{min-height:44px;height:44px}
.comment{background:var(--warn-soft);border-left:3px solid var(--warn);padding:8px 10px;border-radius:6px;margin:6px 0;white-space:pre-wrap}
.ver{border-left:3px solid var(--line);padding:4px 10px;margin:8px 0}
.ver pre,.pre{white-space:pre-wrap;word-break:break-word;font:inherit;margin:4px 0;background:#fafafa;padding:8px;border-radius:6px}
.log{border-bottom:1px solid var(--line);padding:10px 0}
.log img{max-width:100%;max-height:320px;border-radius:8px;margin-top:6px;display:block}
.radar text{font-size:12px;fill:var(--muted)}
#toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#111827;color:#fff;padding:9px 16px;border-radius:8px;opacity:0;transition:opacity .2s;pointer-events:none;z-index:9;max-width:90vw}
#toast.show{opacity:.95}
.login{max-width:380px;margin:40px auto}
.dims{display:grid;grid-template-columns:1fr 1fr;gap:6px 18px}
.dims input[type=range]{padding:0}
@media (max-width:820px){
  .layout{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(4,1fr)}
  .chat{height:440px}
  .dims{grid-template-columns:1fr}
  table.resp thead{display:none}
  table.resp td{display:block;border:none;padding:2px 0}
  table.resp tr{display:block;border-bottom:1px solid var(--line);padding:8px 0}
}
@media print{
  .top,.noprint,#toast{display:none!important}
  body{background:#fff}main{max-width:none;padding:0}
  .card{border:none;padding:0}
  .msg{max-width:100%}
}