:root{
  --bg:#f3f6fb;--panel:#fff;--navy:#0a1730;--text:#13213a;--muted:#65738a;
  --line:#d8e0ec;--blue:#3f5eea;--blue2:#2e49c7;--green:#17864c;--red:#d33f49;
  --amber:#9b6200;--shadow:0 8px 24px rgba(15,23,42,.06)
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}
.topbar{height:64px;background:var(--navy);display:flex;align-items:center;gap:12px;padding:0 28px}
.brand{color:#fff;text-decoration:none;font-size:22px;font-weight:800}
.beta{background:#f4b740;color:#332000;border-radius:999px;font-size:11px;font-weight:800;padding:5px 9px}
.page{max-width:1560px;margin:auto;padding:24px}
.hero{margin-bottom:18px}
.eyebrow{text-transform:uppercase;letter-spacing:.12em;color:var(--blue2);font-size:12px;font-weight:800;margin:0 0 8px}
h1{font-size:38px;margin:0 0 8px}
h2{font-size:18px;margin:0 0 12px}
.lead{margin:0;color:var(--muted);font-size:17px}
.layout{display:grid;grid-template-columns:370px 1fr;gap:18px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow)}
.controls{align-self:start;position:sticky;top:14px;max-height:calc(100vh - 28px);overflow:auto}
.step{padding:0 0 16px;margin:0 0 16px;border-bottom:1px solid var(--line)}
.step:last-of-type{border-bottom:0}
label{display:block;font-size:13px;font-weight:700;margin-top:10px}
input,select,textarea{width:100%;margin-top:6px;border:1px solid var(--line);border-radius:9px;padding:10px;font:inherit;background:#fff}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.hint{font-size:12px;color:var(--muted);line-height:1.45}
.curve-tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.curve-tab{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:#fff;padding:10px;border-radius:9px;font-weight:700;cursor:pointer;text-align:left}
.curve-tab.active{background:#eef2ff;border-color:#7287eb}
.dot{width:11px;height:11px;border-radius:50%;display:inline-block;flex:0 0 auto}
.btn{border:0;border-radius:9px;padding:10px 13px;font-weight:800;cursor:pointer}
.btn.primary{background:var(--blue);color:#fff}
.btn.primary:hover{background:var(--blue2)}
.btn.secondary{background:#e9edff;color:#2943bd}
.btn.ghost{background:#fff;border:1px solid var(--line);color:var(--text)}
.btn.full{width:100%}
.button-row,.report-actions{display:flex;gap:9px;flex-wrap:wrap}
.status{border-radius:10px;padding:11px 12px;font-size:13px;margin-top:10px}
.success{background:#eafaf0;border:1px solid #b7e8c7;color:#166534}
.warning{background:#fff7e7;border:1px solid #efd39b;color:#765000}
.hidden{display:none}
.workspace{display:flex;flex-direction:column;gap:18px;min-width:0}
.viewer-panel{padding:0;overflow:hidden}
.viewer-toolbar{padding:12px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.canvas-wrap{height:760px;background:#e7edf6;position:relative;overflow:hidden}
#mainCanvas{width:100%;height:760px;display:block;cursor:crosshair}
#mainCanvas.panning{cursor:grabbing}
.empty-state{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--muted);text-align:center;pointer-events:none}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse}
th,td{text-align:left;border-bottom:1px solid var(--line);padding:9px;font-size:13px}
.preview-stack{display:flex;flex-direction:column;gap:14px}
.preview-stack canvas{display:block;width:100%;background:#fff;border:1px solid var(--line);border-radius:10px}
.curve-status-row{display:flex;justify-content:space-between;gap:8px;padding:7px 0;border-bottom:1px solid var(--line);font-size:12px}
.report-settings textarea{resize:vertical}
footer{max-width:1560px;margin:auto;padding:20px 24px 34px;color:var(--muted);display:flex;justify-content:space-between;font-size:12px}
@media(max-width:1050px){
  .layout{grid-template-columns:1fr}.controls{position:static;max-height:none}.grid3{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .page{padding:14px}.grid3,.grid2{grid-template-columns:1fr}.curve-tabs{grid-template-columns:1fr}
  .canvas-wrap,#mainCanvas{height:560px}.topbar{padding:0 16px}
}

footer a{color:inherit;text-decoration:none;font-weight:700}footer a:hover{text-decoration:underline}

/* V67 support link */
.digitizer-support-link{margin-left:auto;display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border-radius:9px;background:#111827;color:#fff;text-decoration:none;font-weight:800;font-size:14px;border:1px solid #374151}
.digitizer-support-link span:first-child{color:#f59e0b;font-size:18px}.digitizer-support-link:hover{background:#263244}