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.main{background-image:linear-gradient(color-mix(in srgb, var(--accent-primary) 5%, transparent) 1px, transparent 1px), linear-gradient(90deg, color-mix(in srgb, var(--accent-primary) 5%, transparent) 1px, transparent 1px)}}[data-ui-theme=NIGHT_INSTRUMENT] .main{background-size:48px 48px}[data-ui-theme=NIGHT_INSTRUMENT] .focus-action{color:var(--accent-on-primary);background:var(--accent-primary)}[data-ui-theme=GRAPHITE_DAWN] .focus-card{color:var(--hero-text);background:var(--hero-surface)}[data-ui-theme=GRAPHITE_DAWN] .focus-action{color:var(--accent-on-primary);background:var(--accent-primary)}@media (min-width:2200px){.web-app-frame{grid-template-columns:286px minmax(0,1fr)}.web-app-frame .main{padding-inline:clamp(64px,5vw,118px)}.learning-dashboard{grid-template-columns:minmax(0,1.55fr) minmax(390px,.68fr)}}@media (max-width:1320px){.learning-dashboard{grid-template-columns:minmax(0,1.25fr) minmax(300px,.75fr)}.focus-metric{opacity:.48}.focus-card 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3px);place-items:center;font-weight:850;display:grid}.question-edit-option-content{min-width:0}.question-edit-answer{min-height:44px;color:var(--control-text);background:var(--control-surface);border:1px solid var(--control-border);border-radius:var(--radius-control);cursor:pointer;align-items:center;gap:9px;padding:9px 12px;font-size:13px;font-weight:750;display:flex}.question-edit-answer:focus-within{outline:3px solid var(--focus-ring);outline-offset:2px}.question-edit-answer input{width:18px;height:18px;accent-color:var(--accent-primary);margin:0}.question-edit-remove,.question-edit-add,.question-edit-submit{min-height:44px}.question-edit-add{justify-self:start}.question-edit-actions{justify-content:flex-end;display:flex}.question-edit-submit{min-width:150px}.question-edit-status{color:var(--text-secondary);margin:0}.question-edit-form :disabled{cursor:not-allowed;opacity:.68}.question-edit-form :focus-visible{outline:3px solid var(--focus-ring);outline-offset:2px}@media (max-width:900px){.question-edit-option{grid-template-columns:44px minmax(0,1fr);align-items:center}.question-edit-option-content,.question-edit-answer{grid-column:2}.question-edit-remove{grid-column:2;justify-self:start}}@media (max-width:640px){.question-edit-heading{align-items:flex-start}.question-edit-heading .btn{width:100%;min-height:44px}.question-edit-settings,.question-edit-option{grid-template-columns:1fr}.question-edit-option-key,.question-edit-option-content,.question-edit-answer,.question-edit-remove{grid-column:1}.question-edit-actions{bottom:calc(76px + env(safe-area-inset-bottom));position:sticky}.question-edit-submit{width:100%}}.nav .nav-link-module-active{color:var(--sidebar-text);border-left-color:var(--accent-primary)}@media (max-width:780px){.mobile-quick-actions.mobile-quick-actions-v2{grid-template-columns:repeat(4,minmax(0,1fr))}.mobile-nav a.mobile-nav-module-active{color:var(--accent-primary);background:var(--option-selected-surface)}}.web-app-frame{grid-template-columns:216px minmax(0,1fr)}.web-app-frame .main{min-width:0;padding:28px 38px 48px}.workspace-switcher{border:1px solid var(--border-default);background:var(--surface-panel);border-radius:9px;flex-wrap:wrap;gap:4px;margin:0 0 16px;padding:5px;display:flex}.workspace-switcher a{text-align:center;min-width:70px;color:var(--text-secondary);border-radius:5px;flex:1;padding:8px 4px;font-size:12px}.workspace-switcher a[aria-current]{background:var(--option-selected-surface);color:var(--accent-primary);font-weight:700}.topbar-appearance{color:var(--text-secondary);padding:8px;font-size:13px}.study-library-heading,.home-quiz-summary{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;display:flex}.study-library-heading{margin:28px 0 18px}.home-quiz-summary{margin-top:30px}.home-quiz-actions{flex-wrap:wrap;gap:8px;display:flex}.study-space-home .study-home-choices{grid-template-columns:repeat(2,minmax(0,1fr))}.study-space-home .study-project-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;display:grid}.study-space-home .study-project-card{flex-direction:column;align-items:stretch;padding:0;display:flex;overflow:hidden}.study-space-home .study-book{border-radius:0;justify-content:center;align-items:center;width:100%;min-height:116px;display:flex}.study-space-home .study-card-copy{padding:20px}.study-space-home .study-resume{background:var(--option-selected-surface);border-color:var(--option-selected-border);padding:28px}.content-entry-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.theme-preview-mist-cyan{background:#f2f8f9}.theme-preview-mist-cyan span:first-child{background:#087f92}.theme-preview-twilight-violet{background:#1b1925}.theme-preview-twilight-violet span:first-child{background:#c6a9ff}@media (max-width:1100px){.study-space-home .study-project-list{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:780px){.web-app-frame{display:block}.web-app-frame .main{padding:20px 16px calc(108px + env(safe-area-inset-bottom))}.topbar-actions{gap:4px}.study-space-home .study-project-list,.study-space-home .study-home-choices,.content-entry-grid{grid-template-columns:minmax(0,1fr)}.home-quiz-summary{align-items:flex-start}}.mobile-workspace-switch{display:none}.home-quiz-resume{border-top:1px solid var(--border-default);flex-basis:100%;padding-top:18px}.web-app-frame:has(.practice-workspace) .topbar{margin-bottom:16px}.web-app-frame:has(.practice-workspace) .workspace-label small{display:none}@media (max-width:780px){.mobile-workspace-switch{display:block}.mobile-workspace-switch .workspace-switcher{margin-bottom:22px}.web-app-frame:has(.practice-workspace) .mobile-workspace-switch{display:none}}.registration-fields{border:0;gap:18px;min-width:0;margin:0;padding:0;display:grid}.registration-fields legend{margin-bottom:14px;font-weight:700}.registration-code-row{grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:12px;display:grid}.registration-hint{margin:0;font-size:13px;line-height:1.7}.registration-check{align-items:center;gap:10px;line-height:1.6;display:flex}.registration-check input,.registration-policy-option input{width:18px;height:18px;accent-color:var(--accent-primary);flex-shrink:0}.registration-policy-option{border-bottom:1px solid var(--border-default);align-items:flex-start;gap:14px;padding:18px 0;display:flex}.registration-policy-option span{gap:6px;display:grid}.registration-policy-option small{color:var(--text-secondary);line-height:1.6}.registration-issued{background:var(--surface-page);border:1px solid var(--border-default);border-radius:var(--radius-control);gap:12px;padding:20px;display:grid}.registration-issued textarea{resize:vertical;font-family:monospace;font-size:14px}.registration-table-scroll{overflow-x:auto}.registration-table-scroll table{min-width:640px}.registration-settings-links{flex-wrap:wrap;gap:14px;display:flex}@media (max-width:480px){.registration-code-row{grid-template-columns:minmax(0,1fr)}.registration-code-row .btn{width:100%}}.study-home-secondary{margin:0 0 24px}.study-home-secondary .study-button{color:var(--text-secondary);border-color:var(--border-default);background:0 0}.account-safety-actions form{align-items:stretch}.account-safety-actions label{font-weight:650}.account-safety-actions .actions{flex-wrap:wrap;align-items:center}.account-safety-actions .input{flex:1;min-width:180px}.account-safety-actions .muted{margin:0;font-size:13px}@media (max-width:780px){.study-space-home .study-page-heading{padding:4px 0 12px}.study-space-home .study-page-heading h1{font-size:26px}.study-space-home .study-resume{margin-bottom:16px;padding:20px}.study-space-home .study-resume h2{font-size:21px}.study-home-secondary{margin-bottom:20px}.mobile-workspace-switch .workspace-switcher{margin-bottom:14px}}.practice-typography-root .question-stem{font-size:var(--practice-question-font-size,20px);overflow-wrap:anywhere}.practice-typography-root .memorize-option{font-size:var(--practice-option-font-size,16px);overflow-wrap:anywhere}.practice-typography-root .explanation,.learning-explanation{min-width:0;max-width:100%;font-size:var(--practice-explanation-font-size,17px);overflow-wrap:anywhere;line-height:1.75}.learning-explanation :is(p,li,blockquote,td,th,code),.explanation :is(p,li,blockquote,td,th,code){font-size:inherit}.learning-explanation h1{font-size:1.35em}.learning-explanation h2{font-size:1.2em}.learning-explanation h3{font-size:1.08em}.learning-explanation :is(table,pre,.katex-display),.explanation :is(table,pre,.katex-display){max-width:100%;display:block;overflow-x:auto}.practice-font-settings 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--tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-backdrop-blur{syntax:"*";inherits:false}@property --tw-backdrop-brightness{syntax:"*";inherits:false}@property --tw-backdrop-contrast{syntax:"*";inherits:false}@property --tw-backdrop-grayscale{syntax:"*";inherits:false}@property --tw-backdrop-hue-rotate{syntax:"*";inherits:false}@property --tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}