/* Shared, lightweight exercise UI. No animation or icon dependency. */
[hidden]{display:none!important}.exercise-input{min-width:0}.exercise-feedback:not(:empty){padding:16px;margin:18px 0;line-height:1.65;font-size:15px}.feedback-good{background:#edf1e8;color:#314b2a}.feedback-wrong{background:#fae9e9;color:#843043}.answers button{display:flex;align-items:center;gap:12px;min-height:52px;padding:16px;text-align:left;border:1px solid var(--line);background:transparent;color:var(--ink);font-size:16px;line-height:1.45;cursor:pointer;white-space:normal;overflow-wrap:anywhere}.answers button>span{min-width:0}.answers button:disabled{opacity:1;cursor:default}.answers button.correct{background:#edf1e8;color:#314b2a;border-color:#849777}.answers button.incorrect{background:#fae9e9;color:#843043;border-color:#c98392}.answer-dot{width:16px;height:16px;flex:0 0 16px;border:1px solid currentColor;border-radius:50%}.correct .answer-dot{background:currentColor}.fill-answer label,.match-answer label{display:grid;gap:10px;color:var(--ink);font-size:16px;line-height:1.5}.fill-answer input,.match-answer select{width:100%;min-width:0;max-width:100%;min-height:48px;margin:0;padding:12px;font-size:16px;border:1px solid var(--line);border-radius:0;background:white;color:var(--ink)}.match-answer{display:grid;gap:16px}.match-answer label{grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);align-items:center;gap:14px}.learn-primary{background:var(--accent);color:white;border:1px solid var(--accent);padding:16px 20px;min-height:48px;font-size:16px;cursor:pointer;margin-top:14px}.visual-answers{grid-template-columns:repeat(3,minmax(0,1fr))}.visual-answers button{display:flex;flex-direction:column;justify-content:space-between;min-width:0;padding:8px}.visual-answers figure{margin:0;padding:4px;border:0}.visual-answers figcaption{display:none}.visual-answers img{height:130px!important;object-fit:contain}.visual-answers .plane-diagram{max-height:170px}.plane-diagram{display:block;width:100%;height:auto;max-height:260px;margin:auto}.exercise-media{background:#fff;border:1px solid var(--line);padding:12px;margin:18px 0}.exercise-media p{font-size:13px;line-height:1.5}.pointer-plate{position:relative;max-width:650px;margin:auto}.pointer-plate>img{display:block;width:100%;height:auto;max-height:none!important}.pointer-plate>svg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.lesson-figure{margin:18px 0;padding:14px;background:white;border:1px solid var(--line)}.lesson-figure>img{display:block;width:100%;max-height:300px;object-fit:contain}.lesson-figure figcaption{font-size:12px;line-height:1.5;color:#656158;margin-top:10px}.history-visual{padding:22px;border-block:1px solid var(--line)}.history-visual>span{font-size:12px;letter-spacing:1px}.history-visual strong{display:block;font-size:64px;color:var(--accent);line-height:1.25}.history-visual p{font-size:15px}.study-links{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0}.study-links a{display:inline-flex;align-items:center;min-height:44px;padding:9px 12px;border:1px solid var(--line);font-size:14px;color:var(--accent);line-height:1.4}.study-links a:hover{background:#f2e7e4}.lesson-reading{border-bottom:1px solid var(--line);margin-bottom:20px}.lesson-reading summary{padding:16px 0;cursor:pointer;font-weight:600}.lesson-reading dt{font-weight:600;margin-top:16px}.lesson-reading dd{margin:6px 0 16px;color:#625e55;font-size:16px;line-height:1.6}.study-session-note{font-size:13px;line-height:1.5;color:#706b62}.study-audio{display:flex;justify-content:flex-end;margin:0 0 18px}.study-audio button{min-height:44px}.atlas-topic-note{border-left:3px solid var(--accent);padding:18px 22px;background:#efece4;margin-bottom:24px;line-height:1.6}.atlas-topic-note p{margin:8px 0}.practice-header{align-items:flex-start;flex-wrap:wrap;gap:16px}.practice-header>label{min-width:0;max-width:100%;display:grid;gap:8px;font-size:14px}.practice-header select{max-width:100%;margin:0;min-height:44px;font-size:16px}.practice-shell{min-width:0}.flashcard{height:auto!important;min-height:260px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:20px;padding:30px!important;font-size:clamp(20px,2.7vw,30px);line-height:1.45;overflow-wrap:anywhere}.flashcard small{display:block;position:static!important;font-size:12px}.flashcard.flipped{background:#eeece5;color:var(--ink)}.card-buttons button{min-height:48px}.card-visual-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;text-align:center}.card-visual-grid figure{padding:4px}.card-visual-grid figcaption{font-size:11px}.card-visual-grid img{max-height:140px}.clinical-card .answers{margin-top:16px}.clinical-card h2{font-size:23px;line-height:1.4}.clinical-card{min-width:0}.card-figure .lesson-figure{margin:0;border:0;min-height:100%;padding:10px}.card-figure .lesson-figure img{height:180px}.card-figure figcaption{display:none}.card-figure .history-visual{min-height:200px}.card-figure .history-visual>span{font-size:11px}.card-figure .history-visual p{font-size:13px}.study-links a:focus-visible,.answers button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
@keyframes study-enter{from{opacity:.25;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}@keyframes study-correct{50%{transform:translateY(-2px)}}@keyframes study-retry{30%{transform:translateX(-3px)}65%{transform:translateX(3px)}}.exercise-input,.view.active,.flashcard,.lesson-reading[open]{animation:study-enter .22s ease-out}.answer-success .exercise-feedback{animation:study-correct .28s ease}.answer-retry .exercise-feedback{animation:study-retry .25s ease}.quarter.ready,.unit-star:not(:disabled){animation:study-enter .3s ease-out}.answers button,.study-links a,.home-primary,.home-secondary{transition:background-color .18s,border-color .18s,transform .18s}.answers button:not(:disabled):active,.home-primary:active{transform:scale(.99)}progress::-webkit-progress-value{transition:width .28s ease}.progress>span{transition:width .28s ease}
@media(max-width:820px){.practice-header{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.practice-header>.eyebrow{grid-column:1/-1}.clinical-grid{grid-template-columns:1fr}.study-links{gap:6px}}
@media(max-width:430px){.practice-header{grid-template-columns:minmax(0,1fr)}.match-answer label{grid-template-columns:1fr;gap:8px}.visual-answers{grid-template-columns:1fr}.visual-answers button{display:grid;grid-template-columns:130px 1fr;align-items:center;text-align:center;padding:8px}.visual-answers img{height:100px!important}.visual-answers .plane-diagram{max-height:130px}.card-visual-grid{grid-template-columns:1fr}.card-visual-grid>div{display:grid;grid-template-columns:1fr 36px;align-items:center}.card-visual-grid .plane-diagram{max-height:170px}.flashcard{min-height:220px;padding:20px!important}.study-links a{flex:1 1 calc(50% - 8px);justify-content:center;text-align:center;font-size:13px}.lesson-figure{padding:8px}.clinical-card{padding:20px}.clinical-card h2{font-size:21px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}.confetti{display:none!important}}
/* Unit-first practice: progressive selection, one exercise at a time. */
.unit-workspace{max-width:1040px;margin:0 auto 64px}.unit-picker-heading{padding:12px 0 32px}.unit-picker-heading h2{font:700 clamp(28px,3.1vw,42px)/1.17 Manrope,sans-serif;letter-spacing:-1.2px;margin:14px 0}.unit-picker-heading p{max-width:650px;font-size:16px;color:#68645d}.practice-unit-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}.practice-unit-card{display:flex;flex-direction:column;text-align:left;border:1px solid var(--line);background:transparent;padding:0;overflow:hidden;transition:border-color .2s,transform .2s;min-width:0;color:var(--ink)}.practice-unit-card:hover{border-color:var(--accent);transform:translateY(-3px)}.practice-unit-card:focus-visible{outline:2px solid var(--accent);outline-offset:4px}.practice-unit-image{height:220px;position:relative;background:#fff;border-bottom:1px solid var(--line);width:100%;overflow:hidden}.practice-unit-image .lesson-figure{margin:0;padding:18px 30px;border:0;height:100%;background:white}.practice-unit-image .lesson-figure img{height:100%;width:100%;max-height:100%;object-fit:contain}.practice-unit-image figcaption{display:none}.unit-image-brand{position:absolute;bottom:12px;right:16px;font:bold 21px Manrope,sans-serif;letter-spacing:-1px;color:var(--accent);background:#fff;padding:3px 6px}.unit-image-brand>span{font-size:11px;letter-spacing:0;font-weight:400;margin-left:2px}.practice-unit-copy{padding:26px;width:100%;display:flex;flex:1;flex-direction:column;align-items:flex-start}.practice-unit-copy h3{font:700 25px/1.25 Manrope,sans-serif;letter-spacing:-.65px;margin:14px 0 8px}.practice-unit-copy p{font-size:16px;margin:0 0 24px;line-height:1.6}.unit-card-meta{font-size:14px;color:#68645d;margin-top:auto}.unit-card-action{display:block;padding-top:18px;margin-top:18px;border-top:1px solid var(--line);width:100%;color:var(--accent);font-size:15px;font-weight:600}.practice-extras{display:flex;gap:24px;flex-wrap:wrap;padding:24px 0}.text-button{padding:10px 0;min-height:44px;text-align:left;text-decoration:underline;text-underline-offset:5px;font-size:14px;color:var(--accent);background:none;border:0}.quiz-setup{max-width:820px;border-top:1px solid var(--line);padding-top:28px}.quiz-setup fieldset{border:0;padding:0;margin:0 0 30px;min-width:0}.quiz-setup legend{font-weight:600;font-size:16px;padding:0;margin-bottom:16px}.topic-chips{display:flex;flex-wrap:wrap;gap:10px}.topic-chips button{border:1px solid var(--line);min-height:44px;padding:12px 16px;font-size:14px;background:transparent;line-height:1.4;text-align:left}.topic-chips button[aria-pressed=true]{background:#f7e9e9;color:#a80027;border-color:var(--accent)}.quiz-length{display:flex;gap:16px;flex-wrap:wrap}.quiz-length label{display:flex;gap:12px;align-items:center;border:1px solid var(--line);padding:18px;flex:1;min-width:min(100%,240px);cursor:pointer}.quiz-length label:has(input:checked){border-color:var(--accent);background:#f5efea}.quiz-length input{width:18px;height:18px;accent-color:var(--accent);flex-shrink:0}.quiz-length b,.quiz-length small{display:block}.quiz-length b{font-size:16px;font-weight:600}.quiz-length small{font-size:13px;color:#68645d;margin-top:6px}.start-practice{min-height:50px;padding:15px 32px!important}.clean-session{max-width:760px!important;margin:0 auto 60px;padding:28px 36px!important;border:1px solid var(--line);background:#fffdf9}.session-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:26px}.session-toolbar>span{font-size:13px;color:#68645d}.clean-session .question{font-size:clamp(23px,2.6vw,31px);line-height:1.35;letter-spacing:-.6px;margin:26px 0}.clean-session .question-meta{font-size:13px}.clean-session .study-session-note{font-size:12px;margin:28px 0 0}.clean-session #next-question{width:100%;margin-top:18px}.clean-session .result .primary,.clean-session .result .secondary{margin:8px 4px;padding:13px 20px}.case-list{display:grid;border-top:1px solid var(--line)}.case-list-item{display:grid;grid-template-columns:44px minmax(0,1fr) auto;gap:20px;align-items:center;padding:24px 16px;text-align:left;border-bottom:1px solid var(--line);background:transparent;color:var(--ink)}.case-list-item:hover{background:#f0ede6}.case-number{font-size:20px;color:var(--accent);font-weight:600}.case-list-item b{display:block;font-size:18px;font-weight:600}.case-list-item small{display:block;font-size:14px;line-height:1.6;color:#68645d;margin-top:8px;max-width:650px}.case-list-action{font-size:14px;color:var(--accent);white-space:nowrap}.clinical-single{max-width:760px;margin:0 auto;border:1px solid var(--line);padding:30px 36px;background:#fffdf9}.clinical-single>.eyebrow{display:block;margin:16px 0}.clinical-single h2{font:600 clamp(23px,2.7vw,31px)/1.4 Manrope,sans-serif;letter-spacing:-.6px;margin:18px 0 26px}.clinical-single details{border-top:1px solid var(--line);margin-top:24px;padding:16px 0}.clinical-single summary{cursor:pointer;font-size:15px;font-weight:600;padding:8px 0}.clinical-single details a{display:inline-block;min-height:44px;padding-top:12px;font-size:14px}.clinical-single #case-next{width:100%;margin-top:16px;min-height:48px}.clinical-single .answers{display:grid;gap:12px}.clinical-single .concept p{font-size:16px}.unit-workspace .eyebrow{line-height:1.5}body[data-study-view=quiz] .page-heading,body[data-study-view=clinical] .page-heading{display:none}
@media(max-width:700px){.practice-unit-grid{gap:16px}.practice-unit-image{height:180px}.practice-unit-copy{padding:20px}.practice-unit-copy h3{font-size:23px}.unit-workspace{margin-bottom:40px}.clean-session,.clinical-single{padding:22px 20px!important}.case-list-item{grid-template-columns:30px minmax(0,1fr);gap:14px;padding:22px 4px}.case-list-action{grid-column:2}.unit-picker-heading{padding-bottom:24px}.quiz-length label{min-width:100%}.practice-extras{gap:8px 24px}}
@media(max-width:540px){.practice-unit-grid{grid-template-columns:1fr}.practice-unit-image{height:200px}.practice-unit-copy h3{font-size:25px}.practice-unit-copy p{margin-bottom:18px}.unit-picker-heading h2{font-size:30px;letter-spacing:-.9px}.topic-chips button{flex:1 1 auto}.clean-session,.clinical-single{padding:20px 16px!important}.session-toolbar{gap:8px}.practice-unit-image .lesson-figure{padding:16px 24px}.start-practice{width:100%}}
@media(prefers-reduced-motion:reduce){.practice-unit-card{transition:none}.practice-unit-card:hover{transform:none}}