:root{--blue:#1565c0;--green:#4caf50;--red:#f44336;--ink:#2c3e50;--bg:#f2f4f8}*{box-sizing:border-box}body{margin:0;padding:20px 10px;background:var(--bg);font-family:'Segoe UI',Roboto,Arial,sans-serif;text-align:center;color:#333}main{max-width:760px;margin:auto}h1{color:var(--blue);font-size:2.2rem}h1:before{content:'♫ ';color:var(--green)}h2,h3{color:var(--ink)}.section{background:#fff;border-radius:12px;padding:18px;box-shadow:0 2px 8px #0002}.screen{display:none}.screen.show{display:block}button{border:0;border-radius:7px;background:var(--green);color:#fff;padding:12px 22px;margin:6px;font-size:17px;font-weight:650;cursor:pointer}button.red{background:var(--red)}button.gray{background:#607d8b}button:disabled{opacity:.5}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:16px 0}.card{border:2px solid var(--green);background:#e8f5e9;border-radius:10px;padding:14px;cursor:pointer}.card.selected{border-color:#2196f3;background:#e3f2fd}.card strong{display:block;font-size:18px}.topbar,.hud{display:flex;justify-content:space-between;align-items:center;gap:10px}.pill{padding:7px 11px;background:#eef2f6;border-radius:999px;font-weight:700}.progress{height:11px;background:#e5e7eb;flex:1;border-radius:99px;overflow:hidden}.progress span{display:block;height:100%;background:var(--green);width:0}.staff{height:155px;margin:22px auto 8px;position:relative;border-left:6px solid var(--ink);border-right:3px solid var(--ink);background:repeating-linear-gradient(to bottom,transparent 0,transparent 25px,#7d8792 26px,#7d8792 28px);background-size:100% 112px;background-position:center 20px;overflow:hidden}.rhythm{height:100%;display:flex;align-items:center;justify-content:space-evenly;font-size:42px;padding:15px}.cursor{position:absolute;top:15px;bottom:15px;width:5px;background:var(--red);left:0;opacity:0;box-shadow:0 0 7px #f44336}.cursor.run{opacity:.8;animation:travel var(--duration) linear forwards}@keyframes travel{from{left:0}to{left:calc(100% - 5px)}}.tap{width:180px;height:90px;border-radius:18px;background:#2196f3;font-size:25px;touch-action:manipulation;user-select:none}.tap.active{transform:scale(.95);background:#0d47a1}.feedback{min-height:58px;font-size:19px;font-weight:700;padding:10px}.ok{color:#25823a}.no{color:#d32f2f}.hidden{display:none!important}.result{font-size:54px;font-weight:800;color:var(--blue)}.mini{color:#667085}.hits{display:flex;height:36px;align-items:center;justify-content:center;gap:5px}.hit{width:10px;height:10px;border-radius:50%;background:#cbd2d9}.hit.good{background:var(--green)}.hit.bad{background:var(--red)}@media(max-width:560px){body{padding:8px}.grid{grid-template-columns:1fr}h1{font-size:1.75rem}.section{padding:12px}.rhythm{font-size:30px}.hud{flex-wrap:wrap}.progress{flex-basis:100%;order:3}}