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var(--accent);outline-offset:2px}.quiz-choice input{opacity:0;pointer-events:none;position:absolute}.quiz-choice-key{border:1px solid var(--border-strong);width:24px;height:24px;font-family:var(--font-mono);color:var(--text-muted);border-radius:6px;flex:none;place-items:center;margin-top:1px;font-size:13px;display:inline-grid}.quiz-choice.is-on .quiz-choice-key{border-color:var(--accent);background:var(--accent);color:var(--accent-ink)}.quiz-foot{border-top:1px solid var(--border);justify-content:space-between;gap:12px;padding:12px 24px 16px;display:flex}.quiz-foot .primary-button:only-child{margin-left:auto}.quiz-error{border-left:3px solid var(--danger);color:var(--danger);background:#f8717114;border-radius:0 8px 8px 0;margin:0 0 12px;padding:10px 14px;font-size:14px}.quiz-results h2{outline:none;margin:0 0 4px;font-size:28px;line-height:1.3}.quiz-results h2.is-pass{color:var(--success)}.quiz-results h2.is-fail{color:var(--danger)}.quiz-verdict{color:var(--text-muted);margin:0 0 14px}.quiz-review{margin:0;padding:0;list-style:none}.quiz-review>li{border-top:1px solid var(--border);padding:18px 0 4px}.quiz-review-title{align-items:center;gap:8px;margin:0 0 8px;font-weight:600;display:flex}.is-correct .quiz-review-title svg{color:var(--success)}.is-wrong .quiz-review-title svg{color:var(--danger)}.quiz-review dl{grid-template-columns:auto 1fr;gap:4px 12px;margin:0 0 12px;font-size:15px;display:grid}.quiz-review dt{color:var(--text-muted)}.quiz-review dd{margin:0}.quiz-review .markdown{font-size:15px}.quiz-card-actions{gap:8px;display:grid}.quiz-history{justify-content:center;gap:8px}.quiz-attempts{flex-wrap:wrap;gap:6px;margin:0 0 16px;display:flex}.quiz-attempt{border:1px solid var(--border-strong);min-height:40px;color:var(--text-muted);cursor:pointer;transition:background .15s var(--ease), border-color .15s var(--ease), color .15s var(--ease);background:0 0;border-radius:999px;align-items:center;gap:6px;padding:0 12px;font-size:14px;display:inline-flex}.quiz-attempt:before{content:"";background:var(--danger);border-radius:50%;width:7px;height:7px}.quiz-attempt.is-pass:before{background:var(--success)}.quiz-attempt:hover{border-color:var(--text-dim);color:var(--text)}.quiz-attempt[aria-pressed=true]{border-color:var(--accent);color:var(--text);background:#22d3ee14}.quiz-attempt-score{font-family:var(--font-mono);font-size:13px}.quiz-attempt-date{color:var(--text-dim);margin:0 0 6px;font-size:14px}.quiz-reread{text-align:left;gap:8px;margin:0 0 14px;padding:8px 12px;line-height:1.4}.quiz-reread svg{color:var(--accent);flex:none}.quiz-reread-heading{font-weight:600}.quiz-reread.is-read{border-color:var(--border);color:var(--text-muted)}.quiz-reread-done{color:var(--success);flex:none;align-items:center;gap:4px;margin-left:4px;font-size:13px;display:inline-flex}.quiz-reread-done svg{color:inherit}.quiz-right{margin-top:16px}.quiz-right>summary{min-height:44px;color:var(--text-muted);cursor:pointer;align-items:center;gap:6px;list-style:none;display:flex}.quiz-right>summary::-webkit-details-marker{display:none}.quiz-right>summary svg{transition:transform .15s var(--ease)}.quiz-right[open]>summary svg{transform:rotate(90deg)}.quiz-right>summary:hover{color:var(--text)}.quiz-return{z-index:2;border:1px solid var(--border-strong);border-left:3px solid var(--branch);background:var(--surface-raised);animation:quiz-return-in .22s var(--ease);border-radius:12px;align-items:center;gap:4px;padding:4px 4px 4px 0;display:flex;position:absolute;bottom:16px;left:16px;right:16px;box-shadow:0 16px 40px #00000080}@keyframes quiz-return-in{0%{opacity:0;transform:translateY(12px)}}.quiz-return-main{min-height:48px;color:var(--text);font:inherit;text-align:left;cursor:pointer;transition:background .15s var(--ease);background:0 0;border:0;border-radius:10px;flex:auto;align-items:center;gap:12px;padding:6px 14px;display:flex}.quiz-return-main:hover{background:var(--surface-solid)}.quiz-return-main svg{color:var(--branch);flex:none}.quiz-return-main strong{font-size:15px;font-weight:600;display:block}.quiz-return-meta{color:var(--text-muted);font-size:13px;display:block}.panel.has-quiz-return .panel-scroll{padding-bottom:112px}.markdown .is-quiz-target{animation:quiz-target 2.4s var(--ease);border-radius:6px;outline:none}@keyframes quiz-target{0%,50%{background:color-mix(in srgb, var(--branch) 22%, transparent);box-shadow:0 0 0 8px color-mix(in srgb, var(--branch) 22%, transparent)}}.markdown :is(h2,h3,h4)[tabindex="-1"]:focus{outline:none}@media (width<=959px){.topbar{gap:12px;padding:0 8px 0 16px}.brand em,.meter-hours{display:none}.meter{flex:auto}.topbar-actions .text-button{padding:0 10px}.sidebar{width:auto;inset:auto 76px 8px 8px}.legend{display:none}.nextup{padding:8px}.nextup h2{display:none}.nextup ul{scrollbar-width:none;gap:4px;display:flex;overflow-x:auto}.nextup-item{white-space:nowrap;background:var(--surface-raised);width:auto}.nextup-more{display:none}.zoom-controls{bottom:8px;right:8px}.app.has-panel .zoom-controls{right:8px}.panel{border-left:0;width:100%;top:64px}.panel-scroll{padding:16px 16px 40px}.panel h2{font-size:24px}.intro{padding:24px 20px}}@media (width>=960px) and (height<=780px){.legend-branches{display:none}.legend-states{border-bottom:0!important;margin-bottom:0!important;padding-bottom:0!important}}@media (width<=420px){.brand span{display:none}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}