:root{
  --ink:#403a36; --muted:#766e68; --line:#ded4cb; --paper:#ffffff;
  --accent:#b85c67; --accent2:#f3e4e3; --panel:#f5f5f4;
}
*{box-sizing:border-box}
body{margin:0;background:#ffffff;color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
.kbd{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.wrap{max-width:1450px;margin:auto;padding:22px}
header{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:16px}
h1{font-size:25px;margin:0 0 5px;font-weight:650;letter-spacing:.01em}
.sub{color:var(--muted);font-size:14px}
button,input,select{font:inherit}
button{border:1px solid var(--line);background:white;color:var(--ink);border-radius:7px;padding:9px 12px;cursor:pointer}
button:hover{border-color:#b9aaa0;background:#fffaf6}
button.active{background:var(--accent2);border-color:var(--accent);color:#8f4650}
.toolbar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.tool{min-width:72px}
.layout{display:block}
.panel{background:var(--paper);border:1px solid var(--line);border-radius:10px;box-shadow:0 2px 10px rgba(0,0,0,.06)}
.canvasPanel{padding:16px;overflow:hidden;margin-bottom:16px}
.side{padding:16px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px}
.section{padding-bottom:16px;margin-bottom:16px;border-bottom:1px solid var(--line);min-width:0}
.section:last-child{border-bottom:0;margin-bottom:0}
.section h2{font-size:14px;text-transform:uppercase;letter-spacing:.08em;margin:0 0 11px}
.row{display:flex;gap:8px;align-items:center}
.row>*{min-width:0}
label{font-size:13px;color:var(--muted)}
input[type=number],input[type=text]{width:100%;border:1px solid var(--line);border-radius:7px;padding:8px;background:#fff}
.gridwrap{overflow:auto;background:#f3f4f5;border:1px solid var(--line);border-radius:8px;padding:22px;max-height:760px;width:100%}
#grid{display:grid;gap:2px;width:max-content;background:#cfc5bc;padding:2px}
.chart{position:relative;width:max-content;margin:auto;padding-top:24px;padding-left:34px}
.corner{position:absolute;left:0;top:0;width:30px;height:22px}
.colLabels{position:absolute;left:34px;top:0;display:grid;gap:2px}
.colLabel{height:22px;display:flex;align-items:center;justify-content:center;font-size:10px;color:var(--muted);font-weight:600}
.rowLabels{position:absolute;left:0;top:24px;display:grid;gap:2px}
.rowLabel{width:30px;height:26px;display:flex;align-items:center;justify-content:flex-end;padding-right:5px;font-size:10px;color:var(--muted);font-weight:600}
.cell{width:26px;height:26px;background:#fff;position:relative;cursor:pointer;border-radius:3px}
.cell::after{content:"";position:absolute;inset:3px;border-radius:6px;background:var(--c,transparent);box-shadow:inset 0 0 0 1px #00000012}
.cell.empty::after{background:#fff}
.cell:hover{outline:2px solid var(--accent);z-index:2}
.legend{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.swatch{width:30px;height:30px;border-radius:5px;border:2px solid transparent;cursor:pointer;position:relative}
.swatch.selected{border-color:var(--accent);box-shadow:0 0 0 2px white inset}
.swatch span{display:none}
.palette{display:grid;grid-template-columns:repeat(7,1fr);gap:6px;max-height:360px;overflow:auto;padding:2px}
.palette .swatch{width:auto;aspect-ratio:1}
.selectedBox{display:flex;gap:10px;align-items:center;background:var(--panel);padding:10px;border-radius:8px}
.bigSwatch{width:42px;height:42px;border-radius:7px;flex:0 0 42px;border:1px solid #0002}
.code{font-weight:650}
.meta{font-size:12px;color:var(--muted);line-height:1.4}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.stat{background:var(--panel);padding:10px;border-radius:8px}
.stat strong{display:block;font-size:18px}
.legendList{max-height:230px;overflow:auto}
.legendRow{display:grid;grid-template-columns:28px 1fr auto;gap:8px;align-items:center;padding:5px 0;font-size:13px}
.legendDot{width:22px;height:22px;border-radius:4px;border:1px solid #0002}
.help{font-size:12px;line-height:1.5;color:var(--muted)}
@media(max-width:900px){.side{grid-template-columns:1fr}.palette{max-height:220px}.gridwrap{max-height:600px}}
@media print{
  body{background:white}.wrap{padding:0}header,.toolbar,.side,.sub{display:none!important}
  .panel{border:0;box-shadow:none}.canvasPanel{padding:0}.gridwrap{border:0;background:white;padding:10px;max-height:none;overflow:visible}
  .cell{width:18px;height:18px}
  .chart{padding-top:20px;padding-left:28px}
  .colLabels{left:28px}
  .colLabel{height:18px;font-size:8px}
  .rowLabels{top:20px}
  .rowLabel{width:24px;height:18px;font-size:8px}
}