:root{
  --bg:#f5f7fa; --card:#ffffff; --ink:#1f2933; --muted:#62707f;
  --line:#e1e7ec; --accent:#1f6feb; --accent-ink:#ffffff; --ok:#1a7f37;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Noto Sans CJK SC","Noto Sans KR","Noto Sans JP",sans-serif;background:var(--bg);color:var(--ink);line-height:1.5}
.topbar{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:18px 22px;background:var(--card);border-bottom:1px solid var(--line)}
.brand h1{margin:0;font-size:20px}
.subtitle{margin:2px 0 0;color:var(--muted);font-size:13px}
.langbox{display:flex;align-items:center;gap:8px;font-size:14px}
.langbox select{padding:6px 8px;border:1px solid var(--line);border-radius:6px;background:#fff;font-size:14px;min-width:140px}
.topbar-links{display:flex;align-items:center;gap:10px;font-size:14px;margin-left:auto}
.tlink{display:inline-flex;align-items:center;padding:6px 12px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--accent);text-decoration:none;font-weight:600;white-space:nowrap}
.tlink:hover{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
@media (max-width:720px){.topbar-links{margin-left:0;width:100%;justify-content:flex-start}}

.module-nav{display:flex;flex-wrap:wrap;gap:6px;padding:10px 22px;background:var(--card);border-bottom:1px solid var(--line)}
.modbtn{border:1px solid var(--line);background:#fff;padding:7px 14px;border-radius:6px;cursor:pointer;font-size:14px}
.modbtn.active{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}

.content{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:16px;padding:22px;align-items:start}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px 18px}
.card h2{margin:0 0 12px;font-size:15px;border-bottom:1px solid var(--line);padding-bottom:8px}

fieldset{border:1px solid var(--line);border-radius:8px;margin:0 0 14px;padding:6px 14px 12px}
legend{font-size:13px;font-weight:600;color:var(--muted);padding:0 6px}
.row{display:flex;align-items:center;gap:10px;padding:5px 0}
.row label{flex:1;color:var(--muted);font-size:14px}
.row input[type=number]{width:130px;padding:5px 8px;border:1px solid var(--line);border-radius:6px;font-size:14px;text-align:right}
.row select{padding:5px 8px;border:1px solid var(--line);border-radius:6px;font-size:14px;min-width:130px;max-width:180px}
.row .unit{width:56px;color:var(--muted);font-size:13px;text-align:left}

.result-empty{color:var(--muted);font-size:14px;padding:8px 0}
.result{display:flex;justify-content:space-between;gap:12px;padding:6px 0;border-bottom:1px dashed var(--line);font-size:14px}
.result:last-of-type{border-bottom:0}
.result-label{color:var(--muted)}
.result-val{font-variant-numeric:tabular-nums;text-align:right;font-weight:600}
.result.highlight{background:#eef5ff;border-radius:6px;padding:6px 8px;margin:2px 0}
.note{font-size:13px;padding:6px 10px;border-radius:6px;margin-top:8px}
.note.warning{background:#fff6e6;color:#9a6700;border:1px solid #f0d59a}
.note.info{background:#eef5ff;color:#1f4f8b;border:1px solid #c9ddff}
.note.critical{background:#fdecea;color:#b71c1c;border:1px solid #f5b0b0;font-weight:700}
.note.critical::before{content:'\26A0  ';font-weight:900}
/* Prominent out-of-envelope banner shown at the top of results when the
   benchmark-envelope gate pruned candidate designs during optimization. */
.bench-banner{background:#fdecea;color:#b71c1c;border:1px solid #f5b0b0;border-left:6px solid #e53935;
  padding:11px 13px;border-radius:7px;margin-bottom:12px;font-weight:800;font-size:14px;
  box-shadow:0 1px 4px rgba(229,57,53,.18)}

.chartbox{margin-top:14px;border:1px solid var(--line);border-radius:8px;padding:10px 12px}
.chartcap{font-size:13px;font-weight:600;color:var(--muted);margin-bottom:6px}
.chartcanvas{width:100%;display:block}

.actions{display:flex;flex-wrap:wrap;gap:10px;padding:0 22px 22px}
.btn{border:1px solid var(--line);background:#fff;padding:9px 18px;border-radius:7px;cursor:pointer;font-size:14px}
#exSelect{padding:9px 8px;border:1px solid var(--line);border-radius:7px;background:#fff;font-size:14px;max-width:220px}
.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.msg{margin:0 22px 22px;padding:10px 14px;border-radius:7px;font-size:14px;min-height:1px}
.msg.ok{background:#e7f6ec;color:var(--ok);border:1px solid #b7e3c4}
.msg.err{background:#fdecec;color:#b3261e;border:1px solid #f3b9b3}
.foot{padding:0 22px 22px;color:var(--muted);font-size:12px;display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.disclaimer{margin-left:auto;max-width:560px;text-align:right}

.sens-grid{display:grid;grid-template-columns:160px 1fr;gap:8px 12px;align-items:center;margin-bottom:12px}
.sens-grid label{color:var(--muted);font-size:14px}
.sens-grid select,.sens-grid input[type=number]{padding:5px 8px;border:1px solid var(--line);border-radius:6px;font-size:14px;max-width:240px;width:100%}

/* ---- benchmark / 对标 deviation panel ---- */
.benchTable{border-collapse:collapse;width:100%;margin:6px 0 4px;font-size:14px;font-variant-numeric:tabular-nums}
.benchTable th,.benchTable td{border:1px solid var(--line);padding:6px 10px;text-align:left;vertical-align:top}
.benchTable th{background:#f5f7fa;color:var(--muted);font-weight:600}
.benchTable td.dev-good{color:#1a7f37;font-weight:700}
.benchTable td.dev-warn{color:#9a6700;font-weight:700}
.benchTable td.dev-bad{color:#b3261e;font-weight:700}
.benchTable td.bench-src{color:var(--muted);font-size:12px;max-width:280px}