:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#161616;background:#f4f4f4;font-synthesis:none}*{box-sizing:border-box}body{margin:0;min-width:320px}button,input,textarea{font:inherit}.shell{width:min(760px,100%);margin:0 auto;padding:20px 16px 60px}.hero{text-align:center;padding:32px 10px 20px}.hero h1{font-size:clamp(2rem,8vw,3.2rem);margin:8px 0;line-height:1.05}.hero p{color:#666;font-size:1.05rem}.card{background:#fff;border:3px solid #c8c8c8;border-radius:28px;padding:22px;margin-bottom:18px;box-shadow:0 8px 20px #0000000a}.eyebrow{font-weight:800;font-size:.78rem;letter-spacing:.12em;color:#666}h2,h3{margin-top:6px}p{line-height:1.5}.stack{display:grid;gap:12px}input[type=email],input[type=password],textarea{width:100%;border:2px solid #d0d0d0;border-radius:18px;padding:16px;background:#fafafa;min-height:56px}textarea{min-height:120px;resize:vertical}button{border:0;border-radius:18px;background:#171717;color:#fff;padding:15px 18px;font-weight:800;cursor:pointer}button.secondary{background:#efefef;color:#222}.topbar,.rowBetween{display:flex;align-items:center;justify-content:space-between;gap:12px}.sessionRow{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px}.session{min-width:100px;background:#f2f2f2;color:#222;border:2px solid #ddd;display:grid;gap:4px}.session.active{border-color:#111;background:#fff}.session span{font-size:.8rem;font-weight:600}.activity{border:2px solid #e1e1e1;border-radius:22px;padding:18px;margin:16px 0;background:#fbfbfb}.sliderLabel{display:flex;justify-content:space-between;margin-bottom:8px}input[type=range]{width:100%}.emojiRow{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.emoji{background:#fff;color:#111;border:2px solid #ccc;font-size:1.6rem;padding:10px}.activeEmoji{background:#e8e8e8;border-color:#111}.status{margin-top:12px;font-weight:700}.grid{display:grid;gap:16px}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:14px 0}.metrics div{border:2px solid #e4e4e4;border-radius:16px;padding:12px 8px;text-align:center}.metrics strong{display:block;font-size:1.25rem}.metrics span,.muted{color:#777;font-size:.85rem}.floatingError{position:fixed;left:16px;right:16px;bottom:16px;background:#fff0f0;border:2px solid #bb4d4d;color:#721c1c;padding:14px;border-radius:14px}@media (max-width: 520px){.topbar{align-items:flex-start}.card{border-radius:24px;padding:18px}.emojiRow{grid-template-columns:repeat(5,minmax(0,1fr))}.emoji{padding:8px 4px;font-size:1.4rem}}