:root{font:16px/1.5 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#243a49;background:#f5f7fb;color-scheme:light dark;--paper:#fff;--line:#dfe5ef;--muted:#65758a;--blue:#285acb}*{box-sizing:border-box}body{margin:0}header,footer{max-width:1150px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:28px}a{color:var(--blue);text-underline-offset:4px}.brand{display:flex;align-items:center;gap:12px;color:inherit;font-weight:650;text-decoration:none}.icon{display:inline-grid;place-items:center;width:40px;height:40px;background:var(--blue);color:white;border-radius:12px;font-size:28px}.download{font-size:14px;font-weight:600}main{max-width:900px;padding:34px 24px 60px;margin:auto}.intro{margin-bottom:32px}.eyebrow{font-size:11px;letter-spacing:2px;color:var(--blue);font-weight:750}h1{font-size:clamp(30px,5vw,48px);line-height:1.1;letter-spacing:-1.5px;margin:16px 0}h2{font-size:24px;margin:0}.intro>p:last-child,#details,.hint{color:var(--muted)}#choices{display:flex;align-items:end;gap:14px;margin-bottom:28px}label{display:grid;gap:7px;color:var(--muted);font-size:13px}input,select,button{font:inherit;border-radius:9px;padding:12px 14px;border:1px solid var(--line);background:var(--paper);color:inherit}button{cursor:pointer;font-weight:650;color:white;background:var(--blue);border-color:var(--blue)}button:disabled{opacity:.4;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #88aaff;outline-offset:3px}#message{padding:20px;background:var(--paper);border:1px solid var(--line);border-radius:12px}#message[hidden],[hidden]{display:none!important}#exercise{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 12px 40px #263b5810}.exercise-heading,.transport,.pages{display:flex;align-items:center;justify-content:space-between;gap:16px}#details{font-size:14px;margin:5px 0 0}#bar{color:var(--muted);font-size:13px}.transport{justify-content:flex-start;margin:24px 0 12px;flex-wrap:wrap}.check{display:flex;align-items:center;gap:8px}.check input{accent-color:var(--blue);width:18px;height:18px}#beat{margin-left:auto;font-weight:650;font-variant-numeric:tabular-nums}#pulse{height:5px;border-radius:4px;background:var(--line);margin-bottom:18px}#pulse.on{background:var(--blue)}.score{background:#fffdf6;border-radius:12px;overflow:hidden}#score{display:block;width:100%;height:auto}.pages{justify-content:center;margin:16px 0}.pages button{background:var(--paper);color:var(--blue);padding:8px 18px}.hint{font-size:12px;margin:18px 0 0}footer{font-size:12px;color:var(--muted);border-top:1px solid var(--line);flex-wrap:wrap}footer a{color:inherit}@media(max-width:600px){header{padding:20px 18px;align-items:start}.brand{font-size:14px}.brand .icon{flex-shrink:0}.download{font-size:12px;max-width:110px;text-align:right}main{padding:25px 14px 45px}#choices{gap:10px;flex-wrap:wrap}#choices label{flex:1;min-width:135px}#choices button{width:100%}#exercise{padding:16px 12px;border-radius:14px}.transport{gap:12px}.transport button{font-size:14px}.check{font-size:12px}h2{font-size:21px}.intro{padding:0 8px}}@media(prefers-color-scheme:dark){:root{color:#e3eaf5;background:#151c28;--paper:#202b3c;--line:#3a4659;--muted:#a6b4c7;--blue:#8babff}button{color:#172640}#pulse.on{background:#8babff}.icon{background:#2b59c5;color:white}}
