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p{max-width:36rem;color:var(--muted)}.ui-empty-symbol{color:var(--accent);font-size:2rem}.ui-empty-action{margin-block-start:var(--space-2)}.ui-notice{padding:var(--space-4);border:1px solid var(--border);border-inline-start:4px solid var(--accent);border-radius:var(--radius-md);background:var(--surface)}.ui-notice-warning{border-inline-start-color:var(--warning)}.ui-notice-error{border-inline-start-color:var(--danger);color:var(--danger)}.ui-notice-success{border-inline-start-color:var(--success)}.ui-skeleton{border-radius:var(--radius-lg);background:var(--border);height:12rem;animation:1.5s ease-in-out infinite alternate ui-pulse}.ui-skeleton-heading{max-width:28rem;height:2.5rem;margin-block:var(--space-6)}.ui-spinner-status{gap:var(--space-3);align-items:center;display:inline-flex}.ui-spinner{border:2px solid var(--border);border-block-start-color:var(--accent);border-radius:50%;flex-shrink:0;width:1.2rem;height:1.2rem;animation:.8s linear infinite 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var(--space-2)}.book-cover{min-height:9rem;position:relative}.book-cover>span{font-size:3.5rem;line-height:1.2}.book-card-open{box-shadow:var(--shadow-sm)}.book-card-open:hover{border-color:var(--accent)}.book-resume-action{margin-block-start:var(--space-6)}.upcoming-lessons{margin-block-start:var(--space-8)}.lesson-row-locked{color:var(--muted);background:var(--background)}.learning-steps{gap:var(--space-3);margin:0 0 var(--space-8);padding:0;list-style:none;display:flex}.learning-steps li{align-items:center;gap:var(--space-2);color:var(--muted);font-size:var(--text-sm);display:flex}.learning-steps li>span{border:1px solid var(--border);border-radius:50%;flex-shrink:0;place-items:center;width:2rem;height:2rem;display:grid}.learning-steps [aria-current=step]{color:var(--accent-dark);font-weight:800}.learning-steps [aria-current=step]>span{color:var(--primary-foreground);background:var(--accent);border-color:var(--accent)}.lesson-page+.lesson-page{border-block-start:1px solid var(--border)}.lesson-paragraph{line-height:1.85}.lesson-content{box-shadow:var(--shadow-sm)}.exercise-card{min-width:0;box-shadow:var(--shadow-sm);padding-block-start:var(--space-4)}.exercise-card legend{float:inline-start;margin-block-end:var(--space-4)}.exercise-card>:not(legend){clear:both}.exercise-text-input,.matching-grid select{color:var(--foreground);min-width:0;max-width:100%}.exercise-card .option-card:has(input:focus-visible){outline:var(--focus-width) solid var(--focus-color);outline-offset:var(--focus-offset)}.exercise-options bdi{font-weight:700}.exercise-result-summary h1{font-size:clamp(1.8rem,4vw,2.75rem)}.exercise-result-summary .result-percentage{color:var(--accent-dark);margin-block:var(--space-4);font-size:clamp(3rem,8vw,5rem);font-weight:800;line-height:1.3}.result-navigation .button{margin-block-start:0}.result-navigation .text-link{display:inline-flex}.loading-grid{gap:var(--space-4);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.hero-path{gap:var(--space-3);margin-block:var(--space-6);color:var(--accent-dark);padding-inline-start:1.5rem;display:grid}.hero-path li::marker{font-weight:800}.landing-cta{justify-items:center;gap:var(--space-4);text-align:center;border:1px solid var(--border);border-radius:var(--radius-xl);background:var(--accent-soft);padding-inline:var(--space-6);margin-block-end:var(--space-12);display:grid}@media (max-width:52rem){.app-shell-content>main{width:min(100% - 2rem,68rem)}.dashboard-learning-card{padding:var(--space-6)}.exercise-submit-panel{position:static}}@media (max-width:35rem){.ui-section-header,.catalog-toolbar{flex-direction:column;align-items:flex-start}.profile-details>div,.loading-grid{gap:var(--space-2);grid-template-columns:1fr}.learning-steps{gap:var(--space-2);justify-content:space-between}.learning-steps li{font-size:var(--text-xs);flex-direction:column}.app-topbar{flex-wrap:wrap}.app-topbar-main{flex:10rem}.app-topbar-title{white-space:normal;max-width:none;overflow:visible}.lesson-list-heading{flex-direction:column;align-items:flex-start}.dashboard-path-action{align-items:flex-start}.result-navigation{flex-direction:column;align-items:stretch}.result-navigation>a{justify-content:center}.dashboard-learning-card{padding:var(--space-4)}.hero-visual{padding-inline:0}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}html[data-reduce-motion=true] *,html[data-reduce-motion=true] :before,html[data-reduce-motion=true] :after{scroll-behavior:auto!important;transition:none!important;animation:none!important}html[data-reduce-motion=true]{scroll-behavior:auto}.dialog-description{margin-block:var(--space-4) var(--space-6);color:var(--muted)}@media (max-width:35rem){.header-inner{padding-block:var(--space-3);flex-wrap:wrap}.header-actions{flex-shrink:0}.progress-card-header,.progress-meta{flex-wrap:wrap}.book-preview{padding:var(--space-4);flex-wrap:wrap}.hero-visual .progress-card{padding:var(--space-4)}.hero-visual .book-icon{width:3rem;height:3rem}}.app-topbar-main>div{min-width:0}.app-topbar-title{max-width:100%}.ui-notice-error{color:var(--danger)}.book-locked-status{color:var(--muted);border-color:var(--border);box-shadow:none;cursor:default;background:#e6e9e5}.status-alert{align-items:flex-start;gap:var(--space-3);min-width:0;max-width:100%;padding:var(--space-4);margin-block:var(--space-3);border-radius:var(--radius-md);font-size:var(--text-md);overflow-wrap:anywhere;text-align:start;border:2px solid;line-height:1.6;display:flex}.status-alert-error{color:var(--status-error-text);background:var(--status-error-bg);border-color:var(--status-error-border);font-weight:700}.status-alert-warning{color:var(--status-warning-text);background:var(--status-warning-bg);border-color:var(--status-warning-border);font-weight:700}.status-alert-success{color:var(--status-success-text);background:var(--status-success-bg);border-color:var(--status-success-border)}.status-alert-info{color:var(--status-info-text);background:var(--status-info-bg);border-color:var(--status-info-border);font-weight:400}.status-alert-icon{flex:0 0 1.5rem;width:1.5rem;height:1.5rem;margin-block-start:.15rem}.status-alert-content{flex:1;min-width:0}.status-alert-title{font-weight:700;display:block}.status-alert-action{margin-block-start:var(--space-2)}.status-alert p{color:inherit;margin-block:0}.status-alert a{color:inherit;text-decoration:underline}@media (max-width:35rem){.status-alert{padding:var(--space-3);gap:var(--space-2)}}@media (forced-colors:active){.status-alert{border-color:canvastext}}:is(input:user-invalid,textarea:user-invalid,select:user-invalid){border-color:var(--status-error-border);outline:2px solid var(--status-error-border);outline-offset:2px}.ui-button,.button{justify-content:center;align-items:center;gap:var(--space-2);min-height:var(--target-height);border:2px solid var(--primary);border-radius:var(--button-radius);max-width:100%;color:var(--primary-foreground);background:var(--primary);font:inherit;text-align:center;white-space:normal;overflow-wrap:anywhere;box-shadow:var(--shadow-sm);cursor:pointer;transition:background var(--motion-fast),border-color var(--motion-fast),transform var(--motion-fast);padding:.65rem 1rem;font-weight:700;line-height:1.4;text-decoration:none;display:inline-flex}.ui-button-secondary,.button-secondary{color:var(--accent-dark);background:var(--surface);border-color:var(--control-border);box-shadow:none}.ui-button-tertiary,.ui-button-ghost{color:var(--accent-dark);box-shadow:none;text-underline-offset:.2em;background:0 0;border-color:#0000;text-decoration:underline}.ui-button-danger{color:var(--primary-foreground);background:var(--danger);border-color:var(--danger)}.ui-button-sm{font-size:var(--text-sm);padding:.45rem .75rem}.ui-button-lg{padding:.85rem 1.25rem}.ui-button:not(:disabled):hover,.button:not(:disabled):not(.button-disabled):not([aria-disabled=true]):hover{color:var(--primary-foreground);background:var(--accent-dark);border-color:var(--accent-dark);filter:none;transform:none}.ui-button-secondary:not(:disabled):hover,.button-secondary:not(:disabled):hover,.ui-button-tertiary:not(:disabled):hover,.ui-button-ghost:not(:disabled):hover{color:var(--accent-dark);background:var(--accent-soft);border-color:var(--accent-dark)}.ui-button-danger:not(:disabled):hover{background:var(--status-error-text);border-color:var(--status-error-text);box-shadow:0 0 0 2px var(--status-error-bg)}.ui-button:active:not(:disabled),.button:active:not(:disabled):not(.button-disabled):not([aria-disabled=true]){filter:brightness(.94);transform:translateY(1px)}.ui-button:focus-visible,.button:focus-visible,a:focus-visible,button:focus-visible{outline:var(--focus-width) solid var(--focus-color);outline-offset:var(--focus-offset)}.ui-button:disabled,.button:disabled,.button-disabled,[aria-disabled=true].button{color:var(--button-disabled-text);background:var(--button-disabled-bg);border-color:var(--control-border);box-shadow:none;opacity:1;cursor:not-allowed;transform:none}.ui-button-hint{color:var(--muted);font-size:var(--text-sm);overflow-wrap:anywhere;flex-basis:100%;line-height:1.5;display:block}.text-link{color:var(--link-color);text-underline-offset:.2em;text-decoration:underline}main a:not(.ui-button):not(.button):hover{color:var(--accent-dark);text-decoration-thickness:.16em}.app-nav-item,.app-mobile-nav-item,.main-navigation a{min-height:var(--target-height);border-radius:var(--button-radius);text-decoration:none}.app-nav-item[aria-current=page],.app-mobile-nav-item[aria-current=page]{box-shadow:inset 3px 0 var(--accent-dark);text-underline-offset:.2em;text-decoration:underline}a[class*=card]:hover,a[class*=card]:focus-visible,.book-card-open:focus-within{box-shadow:0 0 0 2px var(--accent)}.cms-queue-items,.cms-history-items{gap:var(--space-4);padding-inline-start:0;list-style:none;display:grid}.cms-queue-items>li,.cms-history-items>li{padding:var(--space-4);border:1px solid var(--control-border);border-radius:var(--radius-md);background:var(--surface);min-width:0}@media (prefers-reduced-motion:reduce){.ui-button,.button{transition:none}}.button-disabled:hover,.button-disabled:focus-visible{color:var(--button-disabled-text);background:var(--button-disabled-bg);border-color:var(--control-border);transform:none}.app-menu-button,.app-mobile-close{min-width:var(--target-height);min-height:var(--target-height);border:2px solid var(--control-border);border-radius:var(--button-radius)}.app-menu-button:hover,.app-mobile-close:hover{background:var(--accent-soft)}.app-menu-button:active,.app-mobile-close:active{transform:translateY(1px)}.ui-button:focus-visible,.button:focus-visible{transform:none}