:root{--bg: #14110e;--panel: #221d18;--ink: #f2ece3;--muted: #a89a89;--accent: #c0843a;--line: #3a3128}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.wrap{max-width:520px;margin:0 auto;padding:16px 16px 40px}header{display:flex;align-items:center;justify-content:space-between;gap:12px}h1{font-size:22px;margin:6px 0 12px;letter-spacing:.5px;color:var(--accent)}.seg{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}.seg button{background:var(--panel);color:var(--muted);border:0;padding:6px 12px;font-size:13px;cursor:pointer}.seg button.on{background:var(--accent);color:#1a130a;font-weight:600}.swatches{display:flex;gap:14px;margin:8px 0}.swatches figure{margin:0;flex:1;text-align:center}.swatches figcaption{font-size:12px;color:var(--muted);margin-bottom:4px}.swatch.big{height:96px;border-radius:10px;border:2px solid var(--line);box-shadow:inset 0 0 0 1px #0006}.status{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:10px 12px;font-size:14px;margin:10px 0;min-height:20px}.muted{color:var(--muted);font-size:12px}canvas#cv{width:100%;height:auto;border-radius:10px;border:1px solid var(--line);display:block;margin:6px 0 12px;background:#1d1a17}.tubes{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:12px}.tube{display:flex;flex-direction:column;align-items:center;gap:4px;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:10px 6px;cursor:pointer;color:var(--ink)}.tube:hover:not(:disabled){border-color:var(--accent)}.tube:disabled{opacity:.4;cursor:not-allowed}.chip{width:34px;height:34px;border-radius:50%;border:2px solid rgba(0,0,0,.4)}.tname{font-size:13px}.tqty{font-size:18px;font-weight:700;color:var(--accent)}.brush{display:flex;align-items:center;gap:8px;margin-bottom:12px;font-size:13px;background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:8px 10px}.residue{font-weight:600}.residue.clean{color:#6fae6f}.residue.dirty{color:#d98b4a}.brush button{margin-left:auto}.actions{display:flex;gap:8px;flex-wrap:wrap}button{background:var(--panel);color:var(--ink);border:1px solid var(--line);border-radius:8px;padding:9px 14px;font-size:14px;cursor:pointer}button:hover:not(:disabled){border-color:var(--accent)}button:disabled{opacity:.45;cursor:not-allowed}button.primary{background:var(--accent);color:#1a130a;font-weight:700;border-color:var(--accent)}.hidden{display:none}.hint{font-size:12px;color:var(--muted);line-height:1.5;margin-top:16px}