/* 问渠电子 · 起草台：阻焊绿 + 铜色，像一块板子；AI 假设用铜色标出来 */
:root{
  --bg:#f4f5f1;--paper:#fff;--ink:#1c2925;--muted:#5a6863;--line:#d6dbd5;
  --mask:#1d6a46;--mask-ink:#fff;--copper:#a65c22;--copper-bg:#fbefe3;
  --pass:#1d6a46;--fail:#b3261e;--pend:#946200;--unk:#5a6863;--rule:#2d5f8a;
  --font:"Noto Sans CJK SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#101614;--paper:#161e1b;--ink:#e3ebe7;--muted:#9aaaa4;--line:#2b3733;
  --mask:#3fa577;--mask-ink:#08130e;--copper:#e2955a;--copper-bg:#33231a;
  --pass:#5fca94;--fail:#ff8a80;--pend:#e3b25a;--unk:#9aaaa4;--rule:#86b7e3}}
:root[data-theme="dark"]{--bg:#101614;--paper:#161e1b;--ink:#e3ebe7;--muted:#9aaaa4;--line:#2b3733;
  --mask:#3fa577;--mask-ink:#08130e;--copper:#e2955a;--copper-bg:#33231a;
  --pass:#5fca94;--fail:#ff8a80;--pend:#e3b25a;--unk:#9aaaa4;--rule:#86b7e3}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.65 var(--font)}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.bar{display:flex;justify-content:space-between;align-items:center;padding:10px 16px;border-bottom:1px solid var(--line);
  background:var(--paper)}
.brand{display:flex;align-items:center;gap:8px}.sep{color:var(--muted)}
.mark{width:14px;height:14px;border-radius:50%;border:3px solid var(--copper);background:var(--mask)}
nav{display:flex;gap:12px;align-items:center}nav a{color:var(--mask)}
button{font:inherit;border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:6px;padding:7px 14px;
  cursor:pointer}
button.primary{background:var(--mask);color:var(--mask-ink);border-color:var(--mask);font-weight:600}
button:disabled{opacity:.45;cursor:not-allowed}
button:focus-visible,a:focus-visible,textarea:focus-visible,input:focus-visible,select:focus-visible{
  outline:2px solid var(--copper);outline-offset:2px}
main{max-width:1080px;margin:0 auto;padding:24px 16px 72px}
h1{font-size:26px;margin:0 0 6px;letter-spacing:.01em}h2{font-size:18px;margin:32px 0 8px}
.lede{color:var(--muted);margin:0 0 14px;max-width:72ch}
textarea{width:100%;font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--paper);
  color:var(--ink);resize:vertical}
.row{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;margin-top:10px;flex-wrap:wrap}
.examples{display:flex;gap:8px;flex-wrap:wrap}
.examples button{font-size:13px;padding:4px 10px;border-style:dashed;color:var(--muted)}
.scope{font-size:13px;color:var(--muted);margin:10px 0 0}
.status{min-height:1.6em;color:var(--muted)}.status.err{color:var(--fail)}
.tally{display:flex;gap:20px;flex-wrap:wrap;font-size:15px;padding:12px 0;border-bottom:1px solid var(--line)}
.tally b{font-size:24px;margin-right:4px}
.pass{color:var(--pass)}.fail{color:var(--fail)}.pending{color:var(--pend)}.unknown{color:var(--unk)}
.box{border:1px solid var(--line);border-left:4px solid var(--copper);background:var(--paper);padding:10px 14px;margin:12px 0;
  border-radius:4px}.box h3{margin:0 0 4px;font-size:15px}.box ul{margin:4px 0 0;padding-left:20px}
.box.rej{border-left-color:var(--fail)}.box.ok{border-left-color:var(--mask)}
.wrap{overflow-x:auto}
table{border-collapse:collapse;width:100%;background:var(--paper);font-size:14px}
th,td{border:1px solid var(--line);padding:6px 8px;text-align:left;vertical-align:top}
th{color:var(--muted);font-weight:600}
td input,td select{font:inherit;width:9em;max-width:100%;padding:3px 6px;border:1px solid var(--line);border-radius:4px;
  background:var(--paper);color:var(--ink)}
td .unit{color:var(--muted);margin-left:4px}
tr.assume td{background:var(--copper-bg)}
.src{display:inline-block;font-size:12px;padding:1px 7px;border-radius:10px;border:1px solid currentColor;white-space:nowrap}
.src.requirement{color:var(--mask)}.src.rule{color:var(--rule)}.src.assumption{color:var(--copper);font-weight:700}
.src.person{color:var(--ink)}.src.template{color:var(--muted);border-style:dashed}
.why{display:block;color:var(--muted);font-size:13px;margin-top:2px}
details.unit{border:1px solid var(--line);border-radius:6px;background:var(--paper);margin:8px 0}
details.unit>summary{padding:8px 12px;cursor:pointer;font-weight:600}
details.unit table{border:0}
.actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin:22px 0 8px}
.confirm{display:flex;gap:6px;align-items:center}
#bookBox{margin-top:20px}#bookBox summary{cursor:pointer;font-weight:600}
iframe{width:100%;height:70vh;border:1px solid var(--line);border-radius:6px;background:#fff;margin-top:8px}
.hint{color:var(--muted);font-size:13px;margin:0 0 6px}
#boardT table{min-width:620px}#boardT td:first-child{min-width:12em}#boardT td:nth-child(2),#boardT td:nth-child(3){white-space:nowrap}
#boardT small{display:block;color:var(--muted)}
@media (max-width:600px){h1{font-size:22px}.tally{gap:12px}td input,td select{width:7em}}