:root{
  --ink:#1d1b26; --muted:#5c586e; --brand:#7c5cd6; --brand-dark:#5f3fc4;
  --line:#e3e0ee; --bg:#faf9fc; --panel:#fff; --cut:#ff2d78;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg)}
.wrap{max-width:1180px;margin:0 auto;padding:0 16px}
.site-header{background:var(--ink);color:#fff}
.header-inner{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;flex-wrap:wrap;gap:6px}
.logo{font-weight:800;font-size:19px}
.logo span{color:#c9b8ff}
.header-note{font-size:13px;color:#bdb8cf}
.hero{padding:26px 0 6px}
.hero h1{font-size:32px;margin:0 0 8px}
.lead{font-size:17px;color:var(--muted);max-width:760px;line-height:1.55;margin:0}
.tool-grid{display:grid;grid-template-columns:360px 1fr;gap:18px;margin:20px 0 8px;align-items:start}
@media(max-width:900px){.tool-grid{grid-template-columns:1fr}}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px}
.panel h2{font-size:16px;margin:14px 0 10px}
.panel h2:first-child{margin-top:0}
.field{display:block;margin-bottom:11px}
.field span{display:block;font-size:13px;color:var(--muted);margin-bottom:5px}
.field input[type=number],.field input[type=text],.field select{
  width:100%;padding:9px 10px;border:1px solid var(--line);border-radius:9px;font-size:15px;background:#fff;color:var(--ink)}
.field input[type=color]{width:100%;height:38px;border:1px solid var(--line);border-radius:9px;background:#fff;padding:3px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.unit-toggle{display:flex;gap:6px;margin-bottom:11px}
.unit-toggle button{flex:1;padding:7px;border:1px solid var(--line);background:#fff;border-radius:8px;cursor:pointer;font-size:13px}
.unit-toggle button.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.check{display:flex;gap:8px;align-items:center;font-size:14px;margin:4px 0 6px;cursor:pointer}
.file-field input{font-size:14px}
.artwork-row{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);margin:-2px 0 10px}
.artwork-row button{border:1px solid var(--line);background:#fff;border-radius:7px;padding:4px 9px;cursor:pointer}
.export-row{display:flex;gap:8px;flex-wrap:wrap}
.btn{padding:10px 14px;border-radius:9px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:14.5px;font-weight:600}
.btn:hover{border-color:var(--brand)}
.btn.primary{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn.primary:hover{background:var(--brand-dark)}
.hint{font-size:12.5px;color:var(--muted);line-height:1.5}
.info-table{margin-top:12px;border-top:1px solid var(--line)}
.info-row{display:flex;justify-content:space-between;gap:10px;padding:7px 0;border-bottom:1px solid var(--line);font-size:13.5px}
.info-row span{color:var(--muted)}
.canvas-box{border:1px dashed var(--line);border-radius:10px;padding:10px;overflow:auto;background:
  repeating-conic-gradient(#f3f1f9 0% 25%, #fff 0% 50%) 0 0/22px 22px;text-align:center}
.canvas-box.center{text-align:center}
.legend{font-size:12.5px;color:var(--muted)}
.swatch{display:inline-block;width:22px;height:0;border-top:3px solid;vertical-align:middle}
.swatch.cut{border-color:var(--cut)}
.swatch.design{border-color:rgba(20,120,255,.85);border-top-style:dashed}
.swatch.seam{border-color:rgba(0,160,80,.9);border-top-style:dashed}
.content{max-width:820px;margin:26px 0 10px;line-height:1.65}
.content h2{font-size:21px;margin:24px 0 8px}
.content ol{padding-left:20px}
.content li{margin-bottom:6px}
.table-scroll{overflow-x:auto}
.size-table{border-collapse:collapse;width:100%;font-size:14px;background:#fff}
.size-table th,.size-table td{border:1px solid var(--line);padding:8px 10px;text-align:left}
.size-table th{background:#f3f1f9}
details{border:1px solid var(--line);border-radius:10px;background:#fff;padding:10px 14px;margin-bottom:8px}
details summary{cursor:pointer;font-weight:600}
details p{margin:8px 0 2px;color:var(--muted)}
.site-footer{color:var(--muted);font-size:13px;padding:16px 0 34px;border-top:1px solid var(--line);margin-top:22px}
.site-footer a{color:var(--brand)}
.ad-unit{margin:18px 0;text-align:center;overflow:hidden}
.ad-top{min-height:90px}
.ad-side{margin:16px 0 2px}
.ad-inarticle{margin:20px 0 4px}
.ad-bottom{margin:22px 0 4px}