:root{--night:#0f1b2d;--snow:#fff;--red:#d93025;--gold:#ffd84a;color:var(--snow);background:var(--night);-webkit-font-smoothing:antialiased;font:16px/1.4 system-ui,Segoe UI,Roboto,sans-serif}html,body,#root{overscroll-behavior:none;height:100%;margin:0;overflow:hidden}.stage{background:var(--night);-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;width:100vw;height:100dvh;position:relative;overflow:hidden}canvas{touch-action:none;width:100%;height:100%;display:block}.overlay{text-align:center;background:#0f1b2db8;flex-direction:column;justify-content:center;align-items:center;gap:14px;padding:24px;display:flex;position:absolute;inset:0}h1,h2,p,ul,dl,dd{margin:0}h1{letter-spacing:-1px;text-shadow:0 4px 0 var(--red), 0 8px 18px #00000080;font-size:clamp(40px,9dvh,64px);font-weight:900;line-height:.95}h2{font-size:30px;font-weight:800}.how{color:#d5e2f5;gap:6px;padding:0;font-size:15px;list-style:none;display:grid}.score{color:var(--gold);font-size:56px;font-weight:900;line-height:1}.best{color:#d5e2f5;font-size:15px}.stats{gap:18px;display:flex}.stats dt{text-transform:uppercase;letter-spacing:.6px;color:#a9bcd8;font-size:12px}.stats dd{font-size:22px;font-weight:800}button{font:inherit;color:inherit;cursor:pointer;background:0 0;border:0}.primary{background:var(--red);border:3px solid var(--snow);border-radius:999px;min-width:190px;padding:14px 28px;font-size:20px;font-weight:800;box-shadow:0 6px #00000059}.primary:active{transform:translateY(3px);box-shadow:0 3px #00000059}.link{color:#d5e2f5;padding:8px 12px;font-size:15px;text-decoration:underline}.icon-button{top:max(10px, env(safe-area-inset-top));right:max(10px, env(safe-area-inset-right));letter-spacing:1px;background:#0c18308c;border:2px solid #fffc;border-radius:50%;width:40px;height:40px;font-size:14px;font-weight:900;position:absolute}.level{right:max(18px, env(safe-area-inset-right));bottom:max(22px, env(safe-area-inset-bottom));aspect-ratio:1;letter-spacing:1px;background:var(--red);border:4px solid var(--snow);touch-action:none;border-radius:50%;place-content:center;width:clamp(84px,24vmin,128px);font-size:clamp(13px,3.6vmin,18px);font-weight:900;line-height:1.1;display:grid;position:absolute;box-shadow:0 7px #0006}.level span{font-size:1.9em}.level:active{transform:translateY(4px);box-shadow:0 3px #0006}.lesson{box-sizing:border-box;text-align:center;background:#0c1830c7;border:2px solid #ffffff59;border-radius:14px;width:min(86vw,420px);padding:12px 16px 4px;font-size:17px;font-weight:700;position:absolute;top:88px;left:50%;transform:translate(-50%)}@media (orientation:landscape){.lesson{left:max(16px, env(safe-area-inset-left));top:auto;bottom:max(16px, env(safe-area-inset-bottom));width:min(42vw,380px);transform:none}}button:focus-visible{outline:3px solid var(--gold);outline-offset:2px}