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var(--space-6) max(var(--space-6), var(--safe-left));margin:auto}.question-card{padding:var(--space-6)}.question-stem{font-size:var(--text-xl);line-height:1.8;font-weight:var(--weight-semibold);white-space:pre-wrap;overflow-wrap:anywhere;margin:var(--space-4) 0 var(--space-3)}.answer-hint{font-size:var(--text-xs);color:var(--muted);margin-bottom:var(--space-5)}.options{gap:var(--space-3);border:0;flex-direction:column;min-width:0;margin:0;padding:0;display:flex}.option{align-items:center;gap:var(--space-3);min-height:58px;padding:var(--space-4);background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);color:var(--ink);font-size:var(--text-base);cursor:pointer;display:flex;position:relative}.option input{width:18px;height:18px;accent-color:var(--selection);flex-shrink:0}.option input:disabled{opacity:1}.option-letter{color:var(--muted);font-weight:var(--weight-semibold);font-size:var(--text-sm)}.option-text{white-space:pre-wrap;overflow-wrap:anywhere;flex:1;min-width:0}.option.selected{border-color:var(--selection);background:var(--selection-bg)}.option.option-correct{border-color:var(--correct);background:var(--correct-bg)}.option.option-wrong{border-color:var(--error);background:var(--error-bg)}.option-correct input{accent-color:var(--correct)}.option-wrong input{accent-color:var(--error)}.option-correct>svg{color:var(--correct)}.option-wrong>svg{color:var(--error)}.submit-row{justify-content:space-between;align-items:center;gap:var(--space-3);margin-top:var(--space-5);padding-top:var(--space-4);border-top:1px solid var(--line);display:flex}.submit-row .muted{font-size:var(--text-xs)}.answer-result{margin-top:var(--space-4);border-top:1px solid var(--line);padding-top:var(--space-2)}.feedback-row{justify-content:space-between;align-items:center;column-gap:var(--space-3);flex-wrap:wrap;display:flex}.feedback-message{align-items:center;gap:var(--space-1);color:var(--muted);font-size:var(--text-sm);flex-wrap:wrap;display:flex}.feedback-message h3{align-items:center;gap:var(--space-1);color:var(--correct);font-size:var(--text-sm);display:flex}.incorrect .feedback-message h3{color:var(--error)}.feedback-message strong{color:var(--correct)}.feedback-row .text-button{font-size:var(--text-xs)}.explanation{border-top:1px solid var(--line);margin-top:var(--space-1)}.explanation p{padding:0 0 var(--space-3);line-height:1.8}.missing-explanation{color:var(--muted);font-size:var(--text-xs);padding:var(--space-1) 0}.pre-wrap{white-space:pre-wrap;overflow-wrap:anywhere}.practice-actions{background:var(--surface);border-top:1px solid var(--line);box-shadow:var(--shadow-bar);padding-bottom:var(--safe-bottom);padding-left:var(--safe-left);padding-right:var(--safe-right)}.practice-actions-inner{justify-content:space-between;align-items:center;gap:var(--space-4);max-width:calc(var(--reading-width) + 48px);padding:var(--space-3) var(--space-6);margin:auto;display:flex}.practice-actions .button{min-width:132px;min-height:48px}.practice-actions .subtle{font-size:var(--text-xs)}.session-summary{text-align:center;padding:var(--space-8) var(--space-5)}.success-symbol{padding:var(--space-4);color:var(--correct);background:var(--correct-bg);margin-bottom:var(--space-4);border-radius:50%;display:inline-flex}.summary-numbers{justify-content:center;gap:var(--space-8);margin:var(--space-6) 0;display:flex}.summary-numbers strong{font-size:var(--text-2xl);display:block}.summary-numbers span{color:var(--muted);font-size:var(--text-xs)}.session-summary .button{margin:var(--space-4) var(--space-1) 0}.summary-home{margin-top:var(--space-3);justify-content:center;display:flex}.completion-card,.data-card,.activity-card{padding:var(--space-6);margin-bottom:var(--space-6)}.subject-progress{border-top:1px solid var(--line);padding-top:var(--space-5);margin-top:var(--space-5)}.subject-progress .section-heading{font-size:var(--text-xs)}.chapter-progress{gap:var(--space-4);color:var(--muted);font-size:var(--text-xs);margin-top:var(--space-4);grid-template-columns:minmax(90px,1fr) 2fr 55px;align-items:center;display:grid}.chapter-progress>span:last-child{text-align:right}.settings-row{justify-content:space-between;align-items:center;gap:var(--space-5);padding:var(--space-5) 0;border-top:1px solid var(--line);flex-wrap:wrap;display:flex}.settings-row p{max-width:470px;margin-top:var(--space-1)}.file-button{position:relative;overflow:hidden}.file-button input{opacity:0;cursor:pointer;width:100%;position:absolute;top:0;bottom:0;left:0;right:0}.file-button:focus-within{outline:3px solid var(--focus);outline-offset:3px}.restore-preview{padding:var(--space-4);background:var(--tint);border-radius:var(--radius-sm);margin-bottom:var(--space-4)}.restore-preview p{margin:var(--space-2) 0 var(--space-3)}.metric-notes{color:var(--muted);font-size:var(--text-xs)}.metric-notes h2{font-size:var(--text-sm)}.metric-notes p{margin-top:var(--space-2)}.activity-chart{align-items:end;gap:var(--space-3);grid-template-columns:repeat(7,minmax(0,1fr));height:180px;display:grid}.activity-day{justify-content:flex-end;align-items:center;gap:var(--space-1);height:100%;color:var(--muted);font-size:var(--text-xs);flex-direction:column;display:flex}.activity-bar{border-radius:var(--radius-sm) var(--radius-sm) 0 0;background:var(--brand);width:min(100%,40px);min-height:2px}.skip-link{z-index:100;padding:var(--space-3);background:var(--surface);color:var(--brand);position:fixed;top:-100px}.skip-link:focus{top:var(--space-2)}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (max-width:1100px){.stats-grid{gap:var(--space-3)}.stat-card{padding:var(--space-4)}}@media (max-width:800px){.sidebar{width:100%;padding:0 var(--safe-right) var(--safe-bottom) var(--safe-left);border-right:0;border-top:1px solid var(--line);top:auto;bottom:0;left:0;right:0}.sidebar>.brand,.sidebar-label,.sidebar-bottom{display:none}.sidebar nav{flex-direction:row;justify-content:space-around;gap:0;min-height:64px}.sidebar nav a{justify-content:center;gap:var(--space-1);padding:var(--space-2) 2px;font-size:var(--text-xs);border-radius:0;flex-direction:column;flex:1}.sidebar nav a.active{background:0 0}.workspace{margin:0}.topbar{min-height:calc(60px + var(--safe-top));padding:var(--safe-top) var(--space-4) 0}.mobile-brand{font-size:var(--text-lg);font-weight:var(--weight-bold);color:var(--ink);display:inline}.desktop-only{display:none}main{padding:var(--space-5) max(var(--space-4), var(--safe-right)) calc(84px + var(--safe-bottom)) max(var(--space-4), var(--safe-left))}h1{font-size:var(--text-xl)}.page-heading{margin-bottom:var(--space-5);align-items:flex-start}.stats-grid{margin-bottom:var(--space-5);grid-template-columns:repeat(2,minmax(0,1fr))}.stat-value{font-size:var(--text-2xl)}.home-middle{gap:var(--space-4);margin-bottom:var(--space-5);grid-template-columns:1fr}.continue-card,.goal-card,.subject-card,.chapter-card{padding:var(--space-5)}.continue-card h2{font-size:var(--text-lg)}.quick-grid{gap:var(--space-3)}.quick-card{padding:var(--space-4);gap:var(--space-3)}.quick-card>svg:last-child{display:none}.filter-card{gap:var(--space-3);padding:var(--space-4);grid-template-columns:1fr}.filter-card label{grid-template-columns:60px minmax(0,1fr);align-items:center;display:grid}.filter-card select{margin:0}.practice-toolbar{margin:var(--space-4) 0}.practice-toolbar .actions{gap:var(--space-2)}.practice-toolbar .button{padding:var(--space-3)}.practice-header-inner{padding:var(--space-2) var(--space-4)}.practice-reading{padding:var(--space-4) max(var(--space-3), var(--safe-right)) var(--space-5) max(var(--space-3), var(--safe-left))}.question-card{padding:var(--space-4)}.question-stem{font-size:var(--text-lg);line-height:1.85}.option{padding:var(--space-3);gap:var(--space-2)}.submit-row{align-items:center}.practice-actions-inner{padding:var(--space-3) var(--space-4);gap:var(--space-3)}.practice-actions .button{flex:1;min-width:0}.practice-actions .subtle{display:none}.completion-card,.data-card,.activity-card{padding:var(--space-4)}.completion-card>.section-heading{align-items:flex-start;gap:var(--space-1);flex-direction:column}.chapter-progress{gap:var(--space-2);grid-template-columns:minmax(80px,1fr) 1.5fr 45px}.settings-row{align-items:flex-start;gap:var(--space-4)}.activity-chart{gap:var(--space-2)}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important}}