.quiz{margin:32px 0 0;padding:16px 12px;background:var(--paper);border:4px solid var(--frame-wood-light);outline:2px solid var(--frame-wood-dark);outline-offset:-2px;box-shadow:var(--shadow-px-lg);max-width:var(--reading-width);scroll-margin-top:calc(var(--header-h, 120px) + 8px);font-family:var(--font-ui)}@media(min-width:640px){.quiz{padding:20px}}.quiz__header{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 16px;margin-bottom:16px}.quiz__title{margin:0;font-family:var(--font-pixel-cjk);font-size:20px;line-height:1.4;color:#a83c3c}.quiz__status{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.quiz__hp{display:flex;align-items:center;gap:8px}.quiz__hp-label{font-family:var(--font-pixel-en);font-size:8px}.quiz__meter{width:96px}.quiz__meter>span{transition:width .2s steps(4)}.quiz__timer{padding:2px 6px;background:var(--bg-dark);color:var(--accent-gold);border:2px solid var(--frame-wood-dark);min-width:72px;text-align:center}.quiz__timer.is-paused{color:#d9caa6}.quiz__empty{margin:0}.quiz__intro{display:grid;gap:16px;justify-items:start}.quiz__intro-box{width:100%}.quiz__intro-line{margin:0 0 8px;font-family:var(--font-pixel-cjk);font-size:16px}.quiz__intro-note{margin:4px 0 0;font-size:14px;color:#d9caa6}.quiz__md,.quiz__stem,.quiz__opt-text,.quiz__feedback{font-family:var(--font-legible);-webkit-font-smoothing:antialiased}.quiz__md{line-height:1.85;overflow-wrap:anywhere}.quiz__md p{margin:0 0 8px}.quiz__md p:last-child{margin-bottom:0}.quiz__md ul,.quiz__md ol{margin:4px 0 8px;padding-left:24px}.quiz__md table{border-collapse:collapse;display:block;overflow-x:auto;max-width:100%}.quiz__md th,.quiz__md td{border:2px solid var(--bg-dark);padding:4px 8px}.quiz__passage{position:sticky;top:calc(var(--header-h, 0px) + 4px);z-index:2;max-height:min(45vh,calc(100vh - var(--header-h, 120px) - 24px));overflow-y:auto;overscroll-behavior:contain;margin-bottom:16px;background:var(--bg-cream-deep);border:2px solid var(--bg-dark);box-shadow:var(--shadow-px)}.quiz__passage summary{min-height:44px;display:flex;align-items:center;padding:0 12px;cursor:pointer;font-family:var(--font-pixel-cjk);font-size:14px}.quiz__passage-body{padding:0 12px 12px;font-size:16px}.quiz__passage summary{position:sticky;top:0;background:var(--bg-cream-deep);z-index:1}.quiz__passage .quiz__fig{margin:0 12px 12px}.quiz__stem{font-size:17px;font-weight:600;margin-bottom:12px}.quiz__select{display:inline-block;margin-bottom:4px;color:#a83c3c;font-family:var(--font-pixel-cjk);font-weight:400}.quiz__fig{margin:0 0 16px}.quiz__fig-svg{background:#fff;border:2px solid var(--bg-dark);padding:4px}.quiz__fig-svg svg{display:block;width:100%;height:auto;max-height:60vh}.quiz__fig figcaption{margin-top:4px;font-size:13px;color:var(--ink-muted);line-height:1.6}.quiz__credit{display:block}.quiz__opts{display:grid;gap:10px}.quiz__opt{display:flex;align-items:flex-start;gap:10px;width:100%;min-height:48px;padding:10px 12px;text-align:left;font-family:var(--font-ui);font-size:16px;line-height:1.6;color:var(--ink);background:#fff;border:2px solid var(--bg-dark);box-shadow:var(--shadow-px);cursor:pointer;-webkit-tap-highlight-color:transparent}.quiz__opt:hover:not(:disabled){background:var(--bg-cream-deep)}.quiz__opt:active:not(:disabled){transform:translate(1px,1px);box-shadow:1px 1px 0 var(--bg-dark)}.quiz__opt:focus-visible{outline:3px solid var(--accent-gold);outline-offset:2px}.quiz__opt.is-on{background:#e3eef7;border-color:#2f5f86;box-shadow:2px 2px #2f5f86}.quiz__opt:disabled{cursor:default;color:var(--ink)}.quiz__opt.is-correct{background:#dfe9cc;border-color:#4f6b2e}.quiz__opt.is-wrong{background:#f2d6d0;border-color:#a83c3c}.quiz__opt.is-dim{color:var(--ink-muted)}.quiz__key{font-family:var(--font-pixel-cjk);flex:none;min-width:36px;white-space:nowrap}.quiz__opt-text{flex:1;min-width:0;overflow-wrap:anywhere}.quiz__mark{flex:none;font-size:12px;padding:0 4px;background:#4f6b2e;color:var(--on-dark)}.quiz__hint{margin:8px 0 0;font-size:14px;color:#a83c3c}.quiz__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:16px}.quiz__actions .btn{min-height:48px}.quiz__submit,.quiz__next,.quiz__start{min-width:160px}@media(max-width:479px){.quiz__submit,.quiz__next,.quiz__start{width:100%}}.quiz__feedback{margin-top:12px;padding:10px 12px;font-size:15px;border-left:8px solid var(--accent-leaf);background:#eef3e2}.quiz__feedback.mid{border-left-color:var(--accent-gold);background:#f7ecd2}.quiz__feedback.ng{border-left-color:var(--accent-rose);background:#f8e8e4}.quiz__feedback strong{display:block;margin-bottom:4px}.quiz__oos{margin:8px 0 0;font-size:13px;color:var(--ink-muted)}.quiz__result-box{margin-bottom:16px}.quiz__result-line{margin:0 0 8px;font-family:var(--font-pixel-cjk);font-size:16px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}.quiz__score-row{display:flex;flex-wrap:wrap;align-items:flex-end;gap:8px 16px}.quiz__score{font-size:96px;line-height:.9;color:var(--accent-gold)}.quiz__score-of{font-family:var(--font-pixel-num);font-size:28px;color:#d9caa6;margin-bottom:6px}.quiz__tier{display:inline-flex;flex-wrap:wrap;align-items:baseline;gap:4px 8px;padding:6px 10px;color:var(--ink);border:2px solid var(--on-dark);font-family:var(--font-pixel-cjk);font-size:20px;margin-bottom:6px}.quiz__tier-id{font-family:var(--font-pixel-en);font-size:12px}.quiz__tier-title{font-size:14px}.quiz__result-sub,.quiz__stats{margin:12px 0 0;font-size:14px;line-height:1.8}.quiz__stats{color:#d9caa6}.quiz__speed{color:var(--accent-gold)}.quiz__newbest{font-size:12px}.quiz__radars{display:grid;grid-template-columns:1fr;gap:12px}@media(min-width:560px){.quiz__radars{grid-template-columns:1fr 1fr}}.radar{margin:0;padding:8px;background:var(--bg-cream);border:2px solid var(--bg-dark)}.radar__title{font-family:var(--font-pixel-cjk);font-size:14px;text-align:center}.radar svg{display:block;width:100%;max-width:360px;height:auto;margin:0 auto}.radar__label{font-family:var(--font-ui);font-size:15px;fill:var(--ink)}.radar__val{font-family:var(--font-pixel-num);font-size:18px;fill:var(--ink-muted)}.quiz__grid-title{font-family:var(--font-pixel-cjk);font-size:16px;margin:20px 0 8px}.quiz__grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(48px,1fr));gap:6px}.quiz__cell a{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:48px;text-decoration:none;color:var(--ink);border:2px solid var(--bg-dark);font-family:var(--font-pixel-cjk);font-size:12px}.quiz__cell .num{font-size:18px}.quiz__cell.ok a{background:#dfe9cc}.quiz__cell.mid a{background:#f7ecd2}.quiz__cell.ng a{background:#f2d6d0}.quiz__canvas{display:none}.quiz__review{margin-top:20px;border:2px solid var(--bg-dark);background:#fff}.quiz__review>summary{min-height:44px;display:flex;align-items:center;padding:0 12px;cursor:pointer;font-family:var(--font-pixel-cjk);font-size:14px}.quiz__review>ol{list-style:none;margin:0;padding:0 12px 12px}.quiz__review-item{padding:12px 0;border-top:2px dashed var(--bg-cream-deep);scroll-margin-top:120px}.quiz__review-meta{margin:0 0 8px;font-size:13px;color:var(--ink-muted)}.quiz__review .quiz__passage{position:static}.arena__modes{list-style:none;margin:0;padding:0;display:grid;gap:16px;grid-template-columns:1fr}@media(min-width:720px){.arena__modes{grid-template-columns:1fr 1fr}}.arena__mode{display:grid;gap:6px;width:100%;min-height:88px;padding:12px 14px;text-align:left;color:var(--ink);background:var(--paper);border:2px solid var(--bg-dark);border-left:12px solid var(--accent-gold);box-shadow:var(--shadow-px-lg);cursor:pointer;font-family:var(--font-ui)}.arena__mode:hover:not(:disabled){background:#fff8e2}.arena__mode:active:not(:disabled){transform:translate(1px,1px);box-shadow:2px 2px 0 var(--bg-dark)}.arena__mode:disabled{cursor:not-allowed;color:var(--ink-muted)}.arena__mode-title{font-family:var(--font-pixel-cjk);font-size:18px}.arena__mode-desc{font-size:14px;line-height:1.6;color:var(--ink-muted)}.arena__mode-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px}.arena__best{padding:0 6px;border:2px solid var(--bg-dark);background:var(--bg-cream-deep)}.arena__best.is-clear{background:#4f6b2e;color:var(--on-dark)}.arena__back{margin-bottom:8px;min-height:44px}.arena__play .quiz{margin-top:8px}.quiz .btn--primary:disabled{background:var(--bg-cream-deep);color:var(--ink-muted);cursor:not-allowed}.quiz__fig-svg svg{min-width:var(--fig-min, 0);cursor:zoom-in}@media(min-width:1024px){.quiz:has(.quiz__body--split){width:min(1040px,calc(var(--quiz-vw, 100vw) - 48px));max-width:none;position:relative;z-index:1;left:50%;transform:translate(calc(-50% + var(--quiz-dx, 0px)))}.quiz__body--split{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:20px;align-items:start}.quiz__body--split .quiz__passage{margin-bottom:0;max-height:calc(100vh - var(--header-h, 64px) - 24px)}}.quiz__group-pos{margin-left:auto;padding-left:12px;font-family:var(--font-ui);font-size:13px;color:var(--ink-muted);white-space:nowrap}