*{box-sizing:border-box}:root{--bg:#0f1216;--panel:#1a1f26;--panel-2:#232a33;--border:#333c47;--text:#e7ecf2;--muted:#9aa7b5;--accent:#4c9aff;--accent-2:#ffd54c;--good:#3ecf8e;--danger:#ff6b6b}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;min-height:100vh}h1{font-size:20px;margin:0}button{font:inherit;cursor:pointer;border:1px solid var(--border);background:var(--panel-2);color:var(--text);padding:8px 14px;border-radius:8px;transition:background .15s,border-color .15s}button:hover:not(:disabled){border-color:var(--accent)}button:disabled{opacity:.4;cursor:not-allowed}button.primary{background:var(--accent);border-color:var(--accent);color:#06101f;font-weight:600}button.ghost{background:transparent}input,select{font:inherit;background:var(--panel-2);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:7px 10px}input:focus,select:focus{outline:none;border-color:var(--accent)}.app{display:grid;grid-template-columns:320px 1fr;min-height:100vh}.sidebar{background:var(--panel);border-right:1px solid var(--border);padding:20px;display:flex;flex-direction:column;gap:18px;overflow-y:auto}.stage{padding:24px;display:flex;align-items:center;justify-content:center;overflow:auto}.card{background:var(--panel-2);border:1px solid var(--border);border-radius:10px;padding:14px;display:flex;flex-direction:column;gap:10px}.muted{color:var(--muted);font-size:13px;line-height:1.5}.steps{display:flex;flex-direction:column;gap:8px}.step{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:8px;border:1px solid transparent;font-size:14px}.step.active{background:var(--panel-2);border-color:var(--accent)}.step.done .badge{background:var(--good);color:#06101f}.badge{width:22px;height:22px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;background:var(--border);color:var(--text);flex-shrink:0}.step.active .badge{background:var(--accent);color:#06101f}.row{display:flex;gap:8px;align-items:center}.row.between{justify-content:space-between}.field{display:flex;flex-direction:column;gap:4px}.field label{font-size:12px;color:var(--muted)}.readout{font-size:26px;font-weight:700}.hint,.readout{color:var(--accent-2)}.hint{font-size:13px;background:rgba(255,213,76,.08);border:1px solid rgba(255,213,76,.25);border-radius:8px;padding:8px 10px}.canvas-wrap{position:relative;line-height:0;-webkit-user-select:none;-moz-user-select:none;user-select:none;touch-action:none}.canvas-wrap img{display:block;max-width:100%;max-height:78vh;border-radius:8px}.overlay{position:absolute;inset:0;width:100%;height:100%;cursor:crosshair}.empty{text-align:center;color:var(--muted);border:2px dashed var(--border);border-radius:14px;padding:60px 40px;max-width:460px}