:root{
      --bg:#eef2f7;--panel:#fff;--text:#17202a;--muted:#687385;--border:#dbe2ea;--accent:#2563eb;
    }
    *{box-sizing:border-box}
    html,body{height:100%}
    body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;overflow:hidden}
    .app{height:100vh;display:grid;grid-template-columns:360px 1fr;gap:18px;padding:18px;min-height:0}
    .sidebar{min-height:0;max-height:calc(100vh - 36px);overflow-y:auto;padding-right:4px;display:flex;flex-direction:column;gap:14px;scrollbar-gutter:stable}
    .panel{background:var(--panel);border:1px solid var(--border);border-radius:24px;box-shadow:0 10px 30px rgba(15,23,42,.06);padding:18px}

    .app-brand{display:flex;align-items:center;gap:13px;margin-bottom:12px}
    .app-logo{width:48px;height:48px;border-radius:15px;background:linear-gradient(135deg,#101827,#5b7080);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900;letter-spacing:.04em;box-shadow:0 8px 20px rgba(15,23,42,.18);overflow:hidden;border:1px solid rgba(255,255,255,.65);flex:0 0 auto}
    .app-logo img{width:100%;height:100%;object-fit:contain;display:none;background:#fff;padding:5px}.app-logo.has-image span{display:none}.app-logo.has-image img{display:block}
    .brand-kicker{font-size:10px;letter-spacing:.22em;font-weight:900;color:#7c8797;margin-bottom:3px}.brand-title{font-size:22px;line-height:1.1;font-weight:900;color:var(--text)}
    h1{font-size:22px;line-height:1.2;margin:0 0 6px}h2{font-size:15px;margin:0 0 14px}p{color:var(--muted);margin:0;font-size:13px;line-height:1.6}
    .field{margin:0 0 12px}.field:last-child{margin-bottom:0}label{display:block;font-size:12px;color:var(--muted);margin:0 0 6px}
    input[type="number"],input[type="text"],select{width:100%;height:40px;border:1px solid var(--border);border-radius:12px;background:#fff;color:var(--text);padding:0 12px;font-size:14px;outline:none}
    input[type="range"]{width:100%}input[type="color"]{width:100%;height:40px;border:1px solid var(--border);border-radius:12px;padding:3px;background:#fff}input[type="file"]{width:100%;font-size:13px}
    .grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px}
    .checkline{display:flex;align-items:center;gap:8px;color:var(--text);font-size:13px;margin-top:4px}
    .preview-wrap{height:calc(100vh - 36px);min-height:0;background:var(--panel);border:1px solid var(--border);border-radius:24px;box-shadow:0 10px 30px rgba(15,23,42,.06);padding:18px;display:flex;flex-direction:column;min-width:0}
    .toolbar{display:flex;flex-wrap:nowrap;justify-content:center;align-items:center;gap:18px;margin-bottom:14px}.toolbar-title{font-size:15px;color:var(--muted);font-weight:700;white-space:nowrap}.toolbar-tools{display:flex;align-items:center;gap:12px;flex-wrap:nowrap}.zoom-ui{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);white-space:nowrap}.zoom-ui input{width:130px}
    .buttons{display:flex;flex-wrap:wrap;gap:8px}button{height:40px;border:0;border-radius:12px;padding:0 14px;font-weight:700;cursor:pointer;background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(37,99,235,.22)}button.secondary{background:#101827;box-shadow:none}button.ghost{background:#eef2f7;color:#17202a;box-shadow:none}
    .canvas-shell{overflow:auto;flex:1;min-height:0;padding:10px;background:#f8fafc;border-radius:18px;border:1px solid var(--border);-webkit-overflow-scrolling:touch}
    .canvas-stage{width:max-content;height:max-content;margin:0 auto}
    canvas{display:block;border-radius:18px;box-shadow:0 16px 40px rgba(15,23,42,.16);background:#fff}
    .small-note{font-size:12px;color:var(--muted);line-height:1.6}.hint{font-size:12px;color:#7c8797;line-height:1.6;margin-top:8px}.control-hidden{display:none!important}.section-note{font-size:12px;color:#526176;line-height:1.6;background:#f8fafc;border:1px solid var(--border);border-radius:14px;padding:10px 12px;margin:0 0 12px}

    .help-panel{position:sticky;top:0;z-index:30;background:linear-gradient(135deg,#eff6ff,#ffffff);border-color:#bfdbfe;box-shadow:0 12px 32px rgba(37,99,235,.13)}
    .help-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:7px}
    .help-badge{font-size:11px;font-weight:900;color:#2563eb;letter-spacing:.08em}
    .help-current{font-size:14px;font-weight:900;color:#17202a}
    .help-text{font-size:12px;line-height:1.65;color:#526176}
    .field:focus-within label,.field:hover label{color:#2563eb}
    .is-help-target{outline:2px solid rgba(37,99,235,.22);outline-offset:2px}
    @media(max-width:980px){
      body{overflow:auto;min-height:100dvh}.app{display:flex;flex-direction:column;height:auto;min-height:100dvh;padding:10px;gap:10px}.sidebar{order:2;max-height:none;overflow:visible;padding-right:0;padding-bottom:28px}.preview-wrap{order:1;position:sticky;top:0;z-index:50;height:48dvh;min-height:300px;max-height:540px;padding:10px;border-radius:0 0 22px 22px;margin:-10px -10px 0;border-left:0;border-right:0;box-shadow:0 10px 28px rgba(15,23,42,.14)}.toolbar{margin-bottom:8px;gap:6px}.toolbar .small-note{display:none}.canvas-shell{padding:6px;border-radius:14px}.grid2,.grid3{grid-template-columns:1fr 1fr}button{height:42px}.zoom-ui input{width:96px}.help-panel{position:relative;top:auto}
    }
    @media(max-width:520px){.preview-wrap{height:45dvh;min-height:260px}.app{padding:8px}.preview-wrap{margin:-8px -8px 0}.grid2,.grid3{grid-template-columns:1fr}.buttons{width:100%}.buttons button{flex:1;min-width:0}.toolbar-tools{width:100%;justify-content:space-between}.zoom-ui{width:100%}.zoom-ui input{flex:1}}


.value-input{
  width:72px;
  height:28px;
  padding:3px 7px;
  margin:0 4px;
  border-radius:9px;
  border:1px solid #cbd5e1;
  background:#fff;
  color:#0f172a;
  font:700 12px/1 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  text-align:right;
  box-shadow:0 1px 0 rgba(15,23,42,.03);
}
.value-input.compact{
  width:62px;
}
.value-input:focus{
  outline:none;
  border-color:#2563eb;
  box-shadow:0 0 0 3px rgba(37,99,235,.18);
}

.build-version{
  margin-top:4px;
  font-size:10px;
  font-weight:900;
  letter-spacing:.08em;
  color:#94a3b8;
}


/* build v10: Lightroom-like compact numeric value fields */
.field label:has(.value-input),
.zoom-ui:has(.value-input){
  display:grid !important;
  grid-template-columns:1fr auto auto;
  align-items:center;
  gap:6px;
  width:100%;
}

.field label .value-input,
.toolbar .value-input,
.zoom-ui .value-input,
input.value-input{
  width:56px !important;
  min-width:0 !important;
  height:18px !important;
  padding:0 2px !important;
  margin:0 !important;
  border:0 !important;
  border-bottom:1px solid transparent !important;
  border-radius:0 !important;
  background:transparent !important;
  color:#334155 !important;
  box-shadow:none !important;
  font:700 11px/18px system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif !important;
  text-align:right !important;
  appearance:textfield;
  -moz-appearance:textfield;
}

.field label .value-input.compact,
.toolbar .value-input.compact,
.zoom-ui .value-input.compact{
  width:46px !important;
}

.field label .value-input::-webkit-outer-spin-button,
.field label .value-input::-webkit-inner-spin-button,
.toolbar .value-input::-webkit-outer-spin-button,
.toolbar .value-input::-webkit-inner-spin-button{
  -webkit-appearance:none;
  margin:0;
}

.field label .value-input:hover,
.toolbar .value-input:hover,
.zoom-ui .value-input:hover{
  color:#0f172a !important;
  border-bottom-color:rgba(100,116,139,.35) !important;
}

.field label .value-input:focus,
.toolbar .value-input:focus,
.zoom-ui .value-input:focus{
  outline:none !important;
  color:#0f172a !important;
  background:rgba(37,99,235,.08) !important;
  border-bottom-color:#2563eb !important;
  box-shadow:none !important;
}

.field input[type="range"],
.zoom-ui input[type="range"]{
  margin-top:2px;
}

@media (max-width: 780px){
  .field label .value-input,
  .toolbar .value-input,
  .zoom-ui .value-input{
    width:52px !important;
  }
}


/* build v11: reliable wide brand logo display */
.app-logo{
  width:96px !important;
  height:48px !important;
  border-radius:10px !important;
  background:transparent !important;
  color:#fff !important;
  border:0 !important;
  box-shadow:none !important;
  overflow:visible !important;
  padding:0 !important;
}
.app-logo img{
  width:100% !important;
  height:100% !important;
  object-fit:contain !important;
  display:block !important;
  background:transparent !important;
  padding:0 !important;
}
.app-logo span{
  width:48px;
  height:48px;
  border-radius:14px;
  background:linear-gradient(135deg,#101827,#5b7080);
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 8px 20px rgba(15,23,42,.18);
}
.app-logo.has-image span{
  display:none !important;
}
.app-logo:not(.has-image) img{
  display:none !important;
}

#fitPreviewBtn{white-space:nowrap}