:root{--red:#dc3545;--blue:#0d6efd}body{background:#eef0f3;color:#212529}main{width:100%;max-width:440px;margin:0 auto;min-height:100dvh;background:#f8f9fa;padding:24px 16px max(16px,env(safe-area-inset-bottom));}h1,h2,button{letter-spacing:-.025em}.btc-logo{display:grid;place-items:center;background:#212529;color:#fff;width:38px;height:38px;border-radius:10px;font-size:26px;font-weight:700}.card{border-color:#dee2e6;border-radius:10px;box-shadow:none}.btn{min-height:42px}.btn-sm{min-height:32px}.answer-up,.answer-down{min-height:54px;font-size:17px;font-weight:600}.answer-up{background:#fce8eb;color:#b02a37;border-color:#f5c2c7}.answer-up:hover,.answer-up:focus-visible{background:#dc3545;color:white}.answer-down{background:#e7f0ff;color:#0a58ca;border-color:#b6d4fe}.answer-down:hover,.answer-down:focus-visible{background:#0d6efd;color:white}.chart-wrap{height:308px;width:100%}canvas{display:block;width:100%;height:100%;touch-action:pan-y}.legend{display:flex;flex-wrap:wrap;gap:12px;font-size:10px;color:#6c757d}.legend span{display:flex;gap:4px;align-items:center}.legend i{width:8px;height:8px;border-radius:2px}.red{background:#dc3545}.blue{background:#0d6efd}.orange{background:#e79527}.stat{flex:1;padding:10px 4px;text-align:center;background:#fff;border:1px solid #dee2e6;border-radius:8px}.stat strong{display:block;font-size:18px}.stat span{font-size:11px;color:#6c757d}#inspect{font-size:10px!important;min-height:28px;font-variant-numeric:tabular-nums}.form-select{min-height:34px;font-size:12px}.alert{font-size:13px;margin-bottom:0}.small{line-height:1.6}summary{cursor:pointer}button:disabled{cursor:default}.badge{font-size:10px}#pool{font-size:11px}#question,#price{font-size:11px}@media(max-width:360px){main{padding:20px 10px}.legend{gap:8px}.chart-wrap{height:280px}}

/* Keep the existing mobile flow; only wide screens use columns. */
.practice-layout,.practice-controls,.practice-actions,.learning-layout{display:contents}
#feedback:empty{display:none}
@media(min-width:992px){
 main.quiz-page{max-width:1200px;padding:32px}
 .practice-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;grid-template-areas:"chart controls" "chart actions";grid-template-rows:auto 1fr;column-gap:24px;margin-bottom:16px;align-items:start}
 .practice-controls{display:block;grid-area:controls;min-width:0}
 .practice-actions{display:block;grid-area:actions;min-width:0}
 .practice-chart{grid-area:chart;align-self:start;display:flex;flex-direction:column;min-width:0;min-height:520px;margin-bottom:0!important}
 .practice-chart .chart-wrap{height:clamp(360px,48vh,520px);min-height:360px;flex:1}
 .learning-layout{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
 .practice-chart #inspect{font-size:12px!important}
 .practice-chart .legend{font-size:12px;gap:16px}
 .practice-chart #question,.practice-chart #price{font-size:12px}
}