:root{--brand:#921044;--ink:#23252b;--muted:#737985;--line:#e5e6ea;--bg:#f6f7f9}*{box-sizing:border-box}body{margin:0;font:14px/1.6 "Segoe UI","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);display:flex;min-height:100vh}aside{width:238px;position:fixed;inset:0 auto 0 0;background:white;border-right:1px solid var(--line);padding:26px 18px}.brand img{width:184px;height:74px;object-fit:contain}.company{font-size:12px;color:var(--muted);margin:10px 0 35px}nav{display:grid;gap:8px}button,a,select{font:inherit}button{cursor:pointer;border:1px solid var(--line);border-radius:7px;background:white;padding:8px 13px;color:var(--ink)}button:hover{border-color:var(--brand)}nav button,nav a{text-align:left;padding:12px;border:0;text-decoration:none;color:var(--muted);background:transparent}nav .selected{background:#f9edf2;color:var(--brand);font-weight:600}.aside-note{position:absolute;bottom:25px;font-size:12px;color:var(--muted)}main{margin-left:238px;padding:32px 38px;width:calc(100% - 238px);max-width:1800px}header{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}header span{font-size:11px;letter-spacing:1.5px;color:var(--brand)}h1{font-size:27px;line-height:1.3;margin:8px 0}h2{font-size:18px}#auth{font-size:12px;color:var(--muted)}.intro{max-width:900px;color:var(--muted);margin-bottom:25px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(235px,1fr));gap:16px}.card{padding:23px;border:1px solid var(--line);border-radius:10px;background:white;text-align:left;display:flex;flex-direction:column;align-items:flex-start}.card h3{font-size:17px;margin:0 0 12px}.card p{font-size:13px;color:var(--muted);margin:0 0 16px;flex:1}.card span{font-size:12px;color:var(--brand)}.group{margin-bottom:28px}.group h2{border-left:3px solid var(--brand);padding-left:12px}#notice:empty{display:none}#notice{background:#fff6e9;border:1px solid #ead4af;padding:12px;border-radius:8px;margin-bottom:16px}.cad-toolbar{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap}.cad-toolbar label{display:grid;gap:5px}select{padding:8px;border:1px solid var(--line);border-radius:6px;max-width:300px;min-width:170px}.primary{background:var(--brand);color:white}.hint{color:var(--muted);font-size:12px}.cad-layout{display:grid;grid-template-columns:minmax(280px,34%) 1fr;gap:18px}.editor,.preview{background:white;border:1px solid var(--line);border-radius:10px;padding:18px}.editor textarea{width:100%;height:430px;resize:vertical;margin-top:10px;background:#fafbfc;border:1px solid var(--line);padding:12px;border-radius:6px;font:12px/1.6 Consolas,monospace}.editor p,.import-label{font-size:12px;color:var(--muted)}input[type=file]{max-width:100%}.preview{position:relative;min-width:0}.preview-tabs{display:flex;align-items:center;gap:8px}.preview-tabs span{font-size:11px;color:var(--muted);margin-left:auto}#drawing,#model{width:100%;height:390px;background:linear-gradient(#fff,#f8f9fb)}#drawing{display:flex;align-items:center;justify-content:center}#drawing svg{width:100%;height:100%}#view-help{font-size:11px;color:var(--muted);margin:0}#downloads{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}a{color:var(--brand)}#downloads a{padding:4px 8px;border:1px solid var(--line);border-radius:5px;text-decoration:none;font-size:12px}.revision{display:flex;gap:14px;align-items:center;border-bottom:1px solid var(--line);padding:12px;font-size:12px}.revision span{flex:1}.revisions{background:white;border:1px solid var(--line);border-radius:8px}dialog{width:min(720px,90vw);border:1px solid var(--line);border-radius:14px;padding:28px}dialog::backdrop{background:#1c122244}dialog pre{white-space:pre-wrap;background:var(--bg);padding:15px;font:13px/1.8 inherit;max-height:45vh;overflow:auto}dialog a{margin:0 15px}[hidden]{display:none!important}@media(max-width:900px){aside{width:170px;padding:20px 12px}.brand img{width:145px}main{margin-left:170px;width:calc(100% - 170px);padding:23px 18px}.cad-layout{grid-template-columns:1fr}}@media(max-width:560px){body{display:block}aside{position:static;width:100%;padding:8px 14px}.brand img{width:140px;height:55px}.company,.aside-note{display:none}nav{display:flex;overflow:auto}nav button,nav a{white-space:nowrap;padding:7px;font-size:12px}main{width:100%;margin:0;padding:18px}header{align-items:flex-start}h1{font-size:23px}#model,#drawing{height:290px}.editor textarea{height:300px}}

#drawing img{width:100%;height:100%;object-fit:contain}

#parameters{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:14px 0}#parameters label{display:grid;font-size:12px;gap:4px}#parameters input{min-width:0;width:100%;border:1px solid var(--line);border-radius:5px;padding:8px;font:inherit}#parameters fieldset{grid-column:1/-1;border:1px solid var(--line);border-radius:7px;display:grid;grid-template-columns:1fr 1fr;gap:10px}#parameters fieldset button{grid-column:1/-1;font-size:11px}.editor details summary{cursor:pointer;color:var(--brand);font-size:12px}