:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#1f1f1f;background:#b7f7e8;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:linear-gradient(135deg,#ffe45ee6,#b7f7e8bf),#b7f7e8}button{font:inherit}.app-shell{width:min(100%,760px);min-height:100vh;margin:0 auto;padding:18px;display:flex;flex-direction:column;gap:16px}.game-header{display:flex;align-items:center;justify-content:space-between;gap:12px}.brand{background:#fe5f55;color:#fff;border:2px solid #1f1f1f;border-radius:8px;box-shadow:3px 3px #1f1f1f;padding:10px 12px;font-weight:900;letter-spacing:0}.stats{display:flex;align-items:center;justify-content:flex-end;gap:10px;flex-wrap:wrap;font-weight:800}.lives{display:inline-flex;gap:2px;color:#fe5f55}.question-card,.feedback-panel,.game-over-panel,.intro-panel,.leaderboard-panel{background:#fff;border:2px solid #1f1f1f;border-radius:8px;box-shadow:5px 5px #1f1f1f;padding:clamp(18px,4rem,30px)}.intro-layout,.game-over-layout{display:grid;gap:16px}.intro-panel p{max-width:58ch}.player-form{display:grid;gap:10px;margin-top:22px}.player-form label{font-weight:900}.input-row{min-height:54px;display:grid;grid-template-columns:24px 1fr;align-items:center;gap:8px;border:2px solid #1f1f1f;border-radius:8px;background:#fff;box-shadow:3px 3px #1f1f1f;padding:0 12px}.input-row input{width:100%;min-width:0;border:0;outline:0;font:inherit;font-weight:800;background:transparent}.form-error,.notice{color:#b91c1c;font-weight:800}.muted{color:#555;font-weight:700}.panel-title{display:flex;align-items:center;gap:8px;margin-bottom:12px}.panel-title h2{margin:0}.leaderboard-list{display:grid;gap:8px;padding:0;margin:0;list-style:none}.leaderboard-list li{min-height:42px;display:grid;grid-template-columns:54px minmax(0,1fr) auto;align-items:center;gap:8px;border:2px solid #1f1f1f;border-radius:8px;background:#f8fafc;padding:8px 10px;font-weight:800}.leaderboard-list li.is-current-player{background:#ffe45e}.rank{color:#555}.player-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.eyebrow{margin:0 0 10px;color:#555;font-size:.9rem;font-weight:800;text-transform:uppercase;letter-spacing:0}h1,h2,p{margin-top:0}h1{font-size:clamp(1.65rem,2.2rem,2.7rem);line-height:1.08;letter-spacing:0}.choice-grid{display:grid;gap:10px;margin-top:22px}.choice-button,.icon-button{min-height:54px;border:2px solid #1f1f1f;border-radius:8px;background:#ffe45e;box-shadow:3px 3px #1f1f1f;color:#1f1f1f;cursor:pointer;font-weight:800;letter-spacing:0}.choice-button{display:grid;grid-template-columns:36px 1fr;align-items:center;gap:10px;padding:10px 12px;text-align:left}.choice-button:nth-child(2){background:#00bbf9}.choice-button:nth-child(3){background:#9b5de5;color:#fff}.choice-button:nth-child(4){background:#f15bb5;color:#fff}.choice-button:disabled{cursor:not-allowed;opacity:.7}.choice-button:focus-visible,.icon-button:focus-visible{outline:3px solid #1f1f1f;outline-offset:3px}.icon-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 18px;background:#1f1f1f;color:#fff}.feedback-panel{background:#fff4d6}.feedback-panel.is-correct h2{color:#168a4a}.feedback-panel.is-wrong h2{color:#d63230}.game-over-panel{text-align:center;background:#f3e8ff}.rank-message{font-weight:900}@media(min-width:680px){.app-shell{padding:28px}.choice-grid{grid-template-columns:1fr 1fr}.intro-layout,.game-over-layout{grid-template-columns:minmax(0,1.35fr) minmax(260px,.8fr);align-items:start}}@media(max-width:460px){.game-header{align-items:flex-start;flex-direction:column}.stats{justify-content:flex-start}}