:root{
  --bg:#fbf1e6;
  --card:#fff7ee;
  --line:rgba(121,93,72,.20);
  --text:#3a2f26;
  --muted:#7b6a5d;
}

*{box-sizing:border-box}
body{
  margin:0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  background:
    radial-gradient(900px 480px at 20% 0%, rgba(255,214,179,.55), transparent 60%),
    radial-gradient(700px 420px at 85% 20%, rgba(255,187,167,.45), transparent 65%),
    var(--bg);
  color:var(--text);
}
.wrap{
  max-width:1100px;
  margin:0 auto;
  padding:16px;
  background:rgba(255,248,240,.9);
}
.hdr{
  position:static;
  z-index:auto;
  backdrop-filter: blur(10px);
  background: rgba(255,248,240,.92);
  border-bottom:1px solid rgba(121,93,72,.25);
  color:#3a2f26;
}
.hdr p{color:#7b6a5d}
.hdr .logo{
  background: rgba(255,255,255,.65);
  border:1px solid rgba(121,93,72,.25);
  color:#3a2f26;
}

.ttl{display:flex;gap:12px;align-items:center}
.logo{
  width:44px;height:44px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background: rgba(255,255,255,.06);
  border:1px solid rgba(38,48,77,.7);
  font-weight:900;
  font-size:12px;
}
h1{margin:0;font-size:16px}
p{margin:3px 0 0;color:var(--muted);font-size:12px}

.ctrl{
  margin-top:12px;
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:12px;
  align-items:end;
}
@media (max-width:860px){ .ctrl{grid-template-columns:1fr;} }

.row label{display:block;color:var(--muted);font-size:12px;margin-bottom:6px}
.row small{display:block;color:var(--muted);font-size:11px;margin-top:6px}
select,input{
  width:100%;
  padding:10px 12px;
  border-radius:14px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.75);
  color:var(--text);
}

.btns{display:flex;gap:10px;flex-wrap:wrap}
button{
  cursor:pointer;
  padding:10px 12px;
  border-radius:14px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.75);
  color:var(--text);
  font-weight:900;
}
button:hover{filter:brightness(1.06)}
.note{grid-column:1 / -1; color:var(--muted); font-size:12px; line-height:1.55}

.main{
  padding-top:18px;
  padding-bottom:40px;
  background:linear-gradient(180deg, rgba(255,244,232,.9), rgba(255,236,220,.85));
}
.pane{
  border-radius:18px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.7);
  box-shadow: 0 12px 34px rgba(122,84,58,.18);
  padding:14px;
}
.paneHead{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
.muted{color:var(--muted);font-size:12px}
.canvasBox{
  margin-top:10px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.85);
  overflow:hidden;
  max-width:420px;
  margin-left:auto;
  margin-right:auto;
}
canvas{display:block;width:100%;height:auto}
.hidden{display:none !important}