:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;color:#142033;font-synthesis:none;text-rendering:optimizelegibility;background:#f5f7fb;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0}button{font:inherit}.app-shell{width:min(1120px,100%);margin:0 auto;padding:24px}.hero{padding:12px 0 24px}.eyebrow{color:#0f766e;letter-spacing:0;text-transform:uppercase;margin:0 0 8px;font-size:.78rem;font-weight:800}h1,h2,p{margin-top:0}h1{margin-bottom:10px;font-size:clamp(2rem,5vw,4rem);line-height:1}h2{margin-bottom:12px;font-size:1rem}.hero-copy{color:#4b5563;max-width:720px;margin-bottom:0;font-size:1rem;line-height:1.7}.status-strip{grid-template-columns:minmax(132px,1fr);gap:10px;display:grid}.status-item{background:#fff;border:1px solid #d8dee9;border-radius:8px;min-height:72px;padding:12px}.status-label{color:#64748b;margin-bottom:6px;font-size:.8rem;font-weight:700;display:block}.status-item strong{color:#334155;font-size:1rem}#detectionStatus[data-state=detected]{color:#047857}#detectionStatus[data-state=missing]{color:#b91c1c}#detectionStatus[data-state=error]{color:#b45309}.workspace{grid-template-columns:minmax(0,1fr) 320px;align-items:start;gap:20px;display:grid}.camera-panel,.controls-panel{background:#fff;border:1px solid #d8dee9;border-radius:8px;box-shadow:0 16px 40px #0f172a14}.camera-panel{overflow:hidden}.video-frame{aspect-ratio:16/10;background:#111827;min-height:280px;position:relative}video{object-fit:cover;width:100%;height:100%;display:block}.video-placeholder{color:#e5e7eb;text-align:center;place-items:center;padding:20px;display:grid;position:absolute;inset:0}.message{color:#374151;border-top:1px solid #e5e7eb;min-height:52px;padding:14px 16px;line-height:1.5}.controls-panel{gap:20px;padding:20px;display:grid}.control-group{gap:10px;display:grid}.heart-rate-options{grid-template-columns:repeat(5,minmax(0,1fr));gap:6px;display:grid}.heart-rate-button,.primary-button,.secondary-button{cursor:pointer;border:1px solid #cbd5e1;border-radius:8px;min-height:48px;font-weight:800}.heart-rate-button{color:#1f2937;background:#f8fafc;min-height:44px;padding:0 4px}.heart-rate-button.is-active{color:#134e4a;background:#ccfbf1;border-color:#0f766e}.button-row{grid-template-columns:1fr 1fr;gap:10px;display:grid}.primary-button{color:#fff;background:#0f766e;border-color:#0f766e}.secondary-button{color:#334155;background:#fff}button:disabled{cursor:not-allowed;opacity:.55}button:focus-visible{outline-offset:3px;outline:3px solid #f59e0b}@media (width<=860px){.workspace{grid-template-columns:1fr}.status-strip{grid-template-columns:minmax(0,1fr)}}@media (width<=520px){.app-shell{padding:16px}h1{font-size:2.25rem}.status-strip,.button-row{grid-template-columns:1fr}.video-frame{min-height:220px}}