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p:first-of-type:first-letter{float:left;color:var(--text-primary);margin-right:.5rem;font-size:4.5rem;font-weight:700;line-height:1}.chapter-content-no-drop-cap p:first-of-type:first-letter,.chapter-content-preface p:first-of-type:first-letter,.preface-title-line:first-letter{float:none;font-size:inherit;line-height:inherit;font-weight:inherit;color:inherit;margin-right:0}.section-break{text-align:center;font-size:var(--font-size-3xl);color:var(--text-secondary);margin:var(--space-12) 0;opacity:.5}.chapter-audio-panel{border:1px solid var(--border-color);background:var(--card-bg);box-shadow:var(--shadow-soft);flex-direction:column;gap:.85rem;margin-bottom:2rem;padding:1rem 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1fr;display:grid}.fc-stats-pie-chart{justify-self:center;position:relative}.fc-stats-pie-center-label{font-size:var(--font-size-lg);color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;pointer-events:none;justify-content:center;align-items:center;font-weight:600;display:flex;position:absolute;inset:0}.fc-stats-pie-legend{gap:var(--space-3);flex-direction:column;display:flex}.fc-stats-pie-legend-item{align-items:center;gap:var(--space-2);display:flex}.fc-stats-pie-legend-label{font-size:var(--font-size-sm);color:var(--text-secondary);flex:1}.fc-stats-pie-legend-value{font-size:var(--font-size-sm);color:var(--text-primary);font-weight:600}.fc-stats-pie-dot{border-radius:50%;flex-shrink:0;width:8px;height:8px;display:inline-block}.fc-stats-pie-dot--learned{background-color:var(--accent-color)}.fc-stats-pie-dot--remaining{background-color:var(--border-color,#e0e0e0)}.fc-stats-forecast-empty{font-size:var(--font-size-sm);color:var(--text-secondary);margin:0}.fc-stats-chart{width:100%;overflow:hidden}.fc-stats-guest{gap:var(--space-3);padding:var(--space-4);border:1px solid var(--border-color);border-radius:var(--radius-md,8px);background-color:var(--card-bg);flex-direction:column;display:flex}.fc-stats-guest-count{font-size:var(--font-size-base);color:var(--text-primary);margin:0;font-weight:600}.fc-stats-guest-prompt{font-size:var(--font-size-sm);color:var(--text-secondary);margin:0}.fc-stats-skeleton-bar{background-color:var(--border-color);border-radius:5px;height:10px;animation:1.4s ease-in-out infinite fc-stats-pulse}.fc-stats-skeleton-bar--short{width:60%;animation-delay:.15s}.fc-stats-skeleton-section-title{width:42%;margin-bottom:var(--space-1)}.fc-stats-skeleton-legend{gap:var(--space-3);flex-direction:column;display:flex}.fc-stats-skeleton-pie{border:22px solid var(--border-color);box-sizing:border-box;border-radius:50%;flex-shrink:0;justify-self:center;width:120px;height:120px;animation:1.4s ease-in-out .1s infinite fc-stats-pulse}.fc-stats-skeleton-chart{border-bottom:1px solid var(--border-color);height:150px;padding:0 2px var(--space-2);align-items:flex-end;gap:8%;display:flex}.fc-stats-skeleton-col{background:var(--border-color);border-radius:3px 3px 0 0;flex:1;min-height:6px;animation:1.4s ease-in-out infinite fc-stats-pulse}@keyframes fc-stats-pulse{0%,to{opacity:1}50%{opacity:.4}}@media (width<=768px){.fc-stats{background:0 0;border:none;grid-template-columns:1fr;padding:0}}.flashcard-view{background:var(--bg-primary);height:100%;min-height:0;padding:var(--page-padding-y) var(--page-padding-x);flex:1;overflow-y:auto}.flashcard-panel{width:100%;max-width:var(--content-width-exercise);box-sizing:border-box;padding:var(--surface-card-padding);border-radius:var(--radius-none);background:var(--card-bg);box-shadow:var(--surface-shadow-card);margin:0 auto;position:relative}.flashcard-compact-header{gap:var(--space-2);padding-bottom:var(--space-5);margin-bottom:var(--space-5);flex-direction:column;display:flex}.flashcard-header-row{justify-content:space-between;align-items:center;display:flex}.flashcard-header-done-label{display:none}.flashcard-header-start{align-items:center;gap:var(--space-4);display:flex}.flashcard-nav-button{box-sizing:border-box;width:var(--control-size-md);min-width:var(--control-size-md);height:var(--control-size-md);border:1px solid var(--border-color);border-radius:var(--radius-none);background:var(--bg-primary);color:var(--text-primary);font:inherit;font-size:var(--font-size-lg);cursor:pointer;flex:none;justify-content:center;align-items:center;padding:0;line-height:1;text-decoration:none;display:inline-flex}.flashcard-nav-button:hover,.flashcard-nav-button:focus-visible{border-color:var(--accent-color)}.flashcard-nav-button:focus-visible{outline:var(--focus-outline-width) solid var(--accent-color);outline-offset:var(--focus-outline-offset-md)}.flashcard-nav-icon{display:inline-block;transform:translateY(-1px)}.flashcard-header-title{font-family:var(--font-family-display);font-size:var(--font-size-3xl);font-weight:var(--font-weight-heavy);color:var(--text-primary);text-transform:uppercase;letter-spacing:var(--letter-spacing-wide)}.flashcard-header-subtitle{margin:var(--space-2) 0 0;font-size:var(--font-size-base);font-weight:var(--font-weight-semibold);color:var(--text-secondary)}.flashcard-action-row{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;column-gap:.75rem;min-height:3.75rem;display:grid}.flashcard-action-row .flashcard-card-counter{justify-self:end}.flashcard-card-counter{font-size:var(--font-size-sm);color:var(--text-secondary)}.flashcard-guest-hint{justify-content:center;align-items:center;gap:var(--space-3);margin:var(--space-6) auto 0;padding:var(--space-4);border:1px solid var(--border-color);background:var(--hover-bg);color:var(--text-secondary);border-radius:0;flex-wrap:wrap;display:flex}.flashcard-sync-toast-layer{pointer-events:none;z-index:3;position:absolute;top:clamp(1rem,2vw,1.5rem);right:clamp(1rem,2vw,1.5rem)}.flashcard-sync-toast{border:1px solid color-mix(in srgb, var(--accent-color) 32%, var(--border-color));background:color-mix(in srgb, var(--card-bg) 88%, var(--accent-color));max-width:min(26rem,100vw - 5rem);color:var(--text-primary);font-size:var(--font-size-sm);box-shadow:var(--surface-shadow-lifted-sm);margin:0;padding:.8rem 1rem;animation:2.6s forwards flashcard-sync-toast-fade}.flashcard-sync-toast-warning{border-color:color-mix(in srgb, var(--state-warning-text) 38%, var(--border-color));background:color-mix(in srgb, var(--state-warning-bg) 78%, var(--card-bg))}@keyframes flashcard-sync-toast-fade{0%{opacity:0;transform:translateY(-.4rem)}12%{opacity:1;transform:translateY(0)}76%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-.3rem)}}.flashcard-guest-hint button,.flashcard-primary-action,.flashcard-rating-button{border:1px solid var(--border-color);cursor:pointer;font:inherit;font-weight:var(--font-weight-semibold);border-radius:0}.flashcard-guest-hint button{background:var(--accent-color);color:var(--text-ink-strong);padding:.45rem .9rem}.flashcard-deck-grid{gap:var(--space-4);grid-template-columns:1fr;display:grid}.flashcard-deck-tile-wrapper{position:relative}.flashcard-deck-tile{gap:var(--space-2);min-height:0;padding:var(--space-4);border:1px solid var(--border-color);background:var(--bg-primary);color:var(--text-primary);border-radius:0;text-decoration:none;display:grid}.flashcard-deck-tile-actions{top:var(--space-3);right:var(--space-3);z-index:1;position:absolute}.flashcard-deck-menu-btn{width:1.75rem;height:1.75rem;color:var(--text-secondary);letter-spacing:-.05em;cursor:pointer;background:0 0;border:1px solid #0000;border-radius:0;justify-content:center;align-items:center;padding:0;font-size:1rem;line-height:1;display:inline-flex}.flashcard-deck-menu-btn:hover,.flashcard-deck-menu-btn:focus-visible{border-color:var(--border-color);color:var(--text-primary);background:var(--hover-bg)}.flashcard-deck-menu-btn:focus-visible{outline:2px solid var(--accent-color);outline-offset:2px}.flashcard-deck-menu-dropdown{border:1px solid var(--border-color);background:var(--card-bg);z-index:10;min-width:11rem;position:absolute;top:calc(100% + .25rem);right:0;box-shadow:0 4px 12px #0000001f}.flashcard-deck-menu-item{width:100%;color:var(--text-primary);font:inherit;font-size:var(--font-size-sm);text-align:left;cursor:pointer;background:0 0;border:none;padding:.6rem .9rem;display:block}.flashcard-deck-menu-item:hover,.flashcard-deck-menu-item:focus-visible{background:var(--hover-bg)}.flashcard-deck-menu-item:focus-visible{outline:2px solid var(--accent-color);outline-offset:-2px}.flashcard-deck-menu-confirm{font-size:var(--font-size-sm);color:var(--text-secondary);align-items:center;gap:.5rem;padding:.6rem .9rem;display:flex}.flashcard-deck-menu-confirm button{border:1px solid var(--border-color);color:var(--text-primary);font:inherit;font-size:var(--font-size-sm);cursor:pointer;background:0 0;padding:.2rem .55rem}.flashcard-deck-menu-confirm button:hover{border-color:var(--accent-color);color:var(--accent-color)}.flashcard-deck-copy{gap:.2rem;display:grid}.flashcard-deck-tile strong{font-size:var(--font-size-lg)}.flashcard-deck-tile span{color:var(--text-secondary)}.flashcard-deck-metrics{color:var(--text-secondary);font-size:var(--font-size-sm);flex-wrap:wrap;gap:.6rem 1rem;display:flex}.flashcard-deck-metrics span{color:inherit}.flashcard-deck-tile em{color:var(--text-secondary);font-style:normal;font-size:var(--font-size-sm);margin-top:.15rem}.flashcard-deck-tile-disabled{opacity:.7;position:relative;overflow:hidden}.flashcard-deck-lock-overlay{pointer-events:none;background:linear-gradient(180deg, color-mix(in srgb, var(--card-bg) 54%, transparent), color-mix(in srgb, var(--card-bg) 82%, transparent));-webkit-backdrop-filter:blur(1.5px);backdrop-filter:blur(1.5px);justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.flashcard-deck-lock-icon{border:2px solid color-mix(in srgb, var(--text-secondary) 40%, transparent);background:color-mix(in srgb, var(--card-bg) 88%, transparent);width:2.4rem;height:2.4rem;color:var(--text-primary);box-shadow:var(--shadow-offset);justify-content:center;align-items:center;display:inline-flex}.flashcard-deck-lock-icon svg{width:1.15rem;height:1.15rem}.flashcard-deck-empty{margin-bottom:var(--space-5)}.flashcard-summary-practiced{margin:0 0 var(--space-3)}.flashcard-summary-practiced div{padding:var(--space-4) var(--space-5);background:var(--hover-bg);border:1px solid var(--border-color);justify-content:space-between;align-items:center;display:flex}.flashcard-summary-practiced dt{color:var(--text-secondary);font-size:var(--font-size-sm)}.flashcard-summary-practiced dd{color:var(--text-primary);font-size:var(--font-size-xl);font-weight:var(--font-weight-heavy);margin:0}.flashcard-summary-ratings{gap:var(--space-3);margin:0 0 var(--space-8);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.flashcard-summary-ratings div{padding:var(--space-4);border:1px solid var(--border-color);text-align:center}.flashcard-summary-ratings dt{font-size:var(--font-size-sm)}.flashcard-summary-ratings dd{margin:var(--space-1) 0 0;font-size:var(--font-size-xl);font-weight:var(--font-weight-heavy)}.flashcard-summary-known{border-color:color-mix(in srgb, var(--state-success-text) 72%, var(--border-color));background:color-mix(in srgb, var(--state-success-bg) 70%, var(--card-bg));color:var(--state-success-text)}.flashcard-summary-shaky{background:color-mix(in srgb, var(--state-warning-bg) 70%, var(--card-bg));color:var(--state-warning-text)}.flashcard-summary-again{background:color-mix(in srgb, var(--state-danger-bg) 70%, var(--card-bg));color:var(--state-danger-text)}.flashcard-stats{gap:var(--space-4);padding:var(--space-5);border:1px solid color-mix(in srgb, var(--border-color) 92%, transparent);background:var(--bg-primary);grid-template-columns:repeat(3,minmax(0,1fr));margin:0;display:grid}.flashcard-stats div{gap:var(--space-1);text-align:center;display:grid}.flashcard-stats dt{color:var(--text-secondary);font-size:var(--font-size-sm)}.flashcard-stat-tooltip-trigger{cursor:help;align-items:center;display:inline-flex}.flashcard-stat-tooltip-trigger span{border-bottom:1px dotted color-mix(in srgb, var(--text-secondary) 78%, transparent)}.flashcard-stat-tooltip-trigger:focus-visible{outline:2px solid var(--accent-color);outline-offset:3px}.flashcard-stat-tooltip{max-width:min(22rem,100vw - 24px)}.flashcard-stats dd{color:var(--text-primary);font-size:clamp(1.05rem,2vw,1.3rem);font-weight:var(--font-weight-bold);margin:0}.flashcard-stats-bottom{margin:var(--space-8) 0 0}.flashcard-error{padding:var(--space-4);border:1px solid color-mix(in srgb, var(--state-danger-text) 30%, transparent);background:var(--state-danger-bg);color:var(--state-danger-text);border-radius:0}.flashcard-empty{text-align:center;color:var(--text-secondary)}.flashcard-deck-tile-skeleton{pointer-events:none}.flashcard-card-skeleton{gap:var(--space-5);cursor:default;pointer-events:none;align-content:start;display:grid}.flashcard-card-skeleton:hover{border-color:var(--border-color)}.flashcard-skeleton-header-title{width:8rem;height:1em}.flashcard-skeleton-word{width:52%;height:3rem}.flashcard-skeleton-support{width:74%;height:1.1em;animation-delay:.1s}.flashcard-skeleton-example{width:88%;height:.9em;animation-delay:.2s}.flashcard-skeleton-button{width:10rem;height:2.75rem;animation-delay:.15s}.flashcard-skeleton-line{background:var(--border-color);border-radius:3px;animation:1.4s ease-in-out infinite flashcard-skeleton-pulse}.flashcard-skeleton-line-title{width:45%;height:1.1em}.flashcard-skeleton-line-meta{width:70%;height:.85em;margin-top:.3rem}@keyframes flashcard-skeleton-pulse{0%,to{opacity:1}50%{opacity:.45}}.flashcard-empty h2{color:var(--text-primary);font-family:var(--font-family-display);font-size:var(--font-size-2xl)}.flashcard-trainer{gap:var(--space-5);display:grid}.flashcard-progress-row{color:var(--text-secondary);justify-content:space-between;display:flex}.flashcard-card{border:1px solid var(--border-color);background:var(--bg-primary);min-height:18rem;box-shadow:none;color:var(--text-primary);cursor:pointer;text-align:left;border-radius:0;padding:clamp(1.5rem,5vw,3rem);transition:border-color .18s,background-color .18s}.flashcard-card:hover{border-color:var(--accent-color)}.flashcard-card-stack{display:grid}.flashcard-card-side{gap:var(--space-5);grid-area:1/1;grid-template-rows:auto auto minmax(1.5rem,auto);align-content:start;display:grid}.flashcard-card-side-hidden{visibility:hidden;pointer-events:none}.flashcard-card strong{font-family:var(--font-family-display);font-size:clamp(2rem,8vw,4rem);line-height:1.05}.flashcard-card-support{font-size:var(--font-size-lg);line-height:var(--line-height-relaxed)}.flashcard-meaning-line{display:block}.flashcard-card-pos{font-size:var(--font-size-sm);color:var(--text-secondary);margin-block-start:-.25rem;font-style:italic}.flashcard-card-flipped{background:color-mix(in srgb, var(--accent-color) 10%, var(--bg-primary))}.flashcard-example{color:var(--text-secondary);font-size:var(--font-size-base);line-height:var(--line-height-relaxed)}.flashcard-card-placeholder{visibility:hidden}.flashcard-primary-action{background:var(--card-bg);min-width:10rem;min-height:2.75rem;color:var(--text-primary);justify-self:center;padding:.85rem 1.5rem;transition:border-color .2s,color .2s,background-color .2s}.flashcard-primary-action:hover,.flashcard-primary-action:focus-visible{border-color:var(--accent-color);color:var(--accent-color)}.flashcard-primary-action:focus-visible{outline:2px solid var(--accent-color);outline-offset:3px}.flashcard-rating-actions{gap:var(--space-3);grid-template-columns:repeat(3,minmax(0,1fr));align-items:stretch;min-height:3.75rem;display:grid}.flashcard-rating-actions--guest{grid-template-columns:minmax(0,1fr);max-width:12rem;margin:0 auto}.flashcard-rating-button{background:var(--hover-bg);color:var(--text-primary);white-space:nowrap;padding:.85rem 1rem;transition:border-color .2s,color .2s,background-color .2s,box-shadow .2s}.flashcard-rating-button:hover,.flashcard-rating-button:focus-visible{border-color:var(--accent-color)}.flashcard-rating-button:focus-visible{outline:2px solid var(--accent-color);outline-offset:3px}.flashcard-rating-again{background:color-mix(in srgb, var(--state-danger-bg) 70%, var(--card-bg));color:var(--state-danger-text)}.flashcard-rating-shaky{background:color-mix(in srgb, var(--state-warning-bg) 70%, var(--card-bg));color:var(--state-warning-text)}.flashcard-rating-known{border-color:color-mix(in srgb, var(--state-success-text) 72%, var(--border-color));background:color-mix(in srgb, var(--state-success-bg) 70%, var(--card-bg));color:var(--state-success-text);box-shadow:0 0 0 1px color-mix(in srgb, var(--state-success-text) 18%, transparent), 0 0 1rem color-mix(in srgb, var(--state-success-text) 16%, transparent)}.flashcard-rating-known:hover,.flashcard-rating-known:focus-visible{border-color:var(--state-success-text);background:color-mix(in srgb, var(--state-success-bg) 78%, var(--card-bg));color:var(--state-success-text);box-shadow:0 0 0 1px color-mix(in srgb, var(--state-success-text) 28%, transparent), 0 0 1.2rem color-mix(in srgb, var(--state-success-text) 24%, transparent)}.flashcard-rating-button:disabled{cursor:progress;opacity:.7}.flashcard-hub-mobile-header{display:none}.flashcard-hub-nav-btn{box-sizing:border-box;width:var(--control-size-md);height:var(--control-size-md);border:1px solid var(--border-color);border-radius:var(--radius-none);background:var(--card-bg);color:var(--text-primary);font:inherit;cursor:pointer;flex:none;justify-content:center;align-items:center;padding:0;text-decoration:none;display:inline-flex}.flashcard-hub-nav-btn:hover,.flashcard-hub-nav-btn:focus-visible{color:var(--accent-color)}.flashcard-hub-nav-btn:focus-visible{outline:var(--focus-outline-width) solid var(--accent-color);outline-offset:var(--focus-outline-offset-md)}.flashcard-hub-chevron{border-top:2px solid;border-right:2px solid;flex:none;width:8px;height:8px;display:block}.flashcard-hub-chevron-left{transform:rotate(-135deg)}.flashcard-hub-chevron-right{transform:rotate(45deg)}.flashcard-hub-nav-placeholder{flex:none;width:34px;height:34px;display:inline-flex}.flashcard-session-mobile-header{display:none}@media (width<=768px){.flashcard-view{background:var(--card-bg);padding:1rem 1rem 2rem}.flashcard-panel{box-shadow:none;background:0 0;border-radius:0;max-width:none;padding:0}.flashcard-hub-panel{padding:0}.flashcard-hub-panel .flashcard-compact-header{margin-bottom:0;padding-bottom:0}.flashcard-compact-header .flashcard-header-title{display:none}.flashcard-header-done-label{text-align:center;min-width:0;font-family:var(--font-family-display);font-size:var(--font-size-2xl);color:var(--text-primary);flex:auto;margin:0;display:block}[data-testid=flashcard-summary] h2{display:none}.flashcard-compact-header:has(.flashcard-header-done-label){margin-bottom:0}.flashcard-hub-header-desktop,.flashcard-hub-subtitle-desktop{display:none}.flashcard-hub-mobile-header{justify-content:space-between;align-items:center;margin-bottom:.8rem;padding:0;display:flex}.flashcard-hub-mobile-header .flashcard-hub-nav-btn{min-width:0;min-height:2.7rem;padding:.55rem}.flashcard-hub-mobile-subtitle{text-align:center;min-width:0;font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);color:var(--text-secondary);flex:auto;margin:0}.flashcard-hub-panel .flashcard-deck-grid{padding:1.5rem 1rem 0}.flashcard-hub-panel .flashcard-error{padding:0 1rem}.flashcard-hub-panel .flashcard-deck-empty{padding:var(--space-4) 1rem}.flashcard-session-header .flashcard-header-row{display:none}.flashcard-session-mobile-header{margin-bottom:.8rem;padding:0;display:block}.flashcard-session-mobile-header .exercise-result-button{background:var(--card-bg);border:1px solid var(--border-color);color:var(--text-primary);font:inherit;cursor:pointer;justify-content:center;align-items:center;font-weight:600;text-decoration:none;transition:border-color .2s,color .2s,background-color .2s;display:inline-flex}.flashcard-session-mobile-header .exercise-result-button:hover:not(:disabled),.flashcard-session-mobile-header .exercise-result-button:focus-visible:not(:disabled){border-color:var(--accent-color)}.flashcard-session-mobile-header .exercise-result-button:focus-visible:not(:disabled){outline:var(--focus-outline-width) solid var(--accent-color);outline-offset:var(--focus-outline-offset-md)}.flashcard-session-mobile-header .exercise-result-button:disabled{opacity:.45;cursor:not-allowed}.flashcard-session-mobile-header .mobile-sentence-pagination{grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:.65rem;display:grid}.flashcard-session-mobile-header .mobile-sentence-pagination-leading,.flashcard-session-mobile-header .mobile-sentence-pagination-trailing{align-items:center;gap:.65rem;min-width:0;display:inline-flex}.flashcard-session-mobile-header .mobile-sentence-pagination-trailing{justify-content:flex-end}.flashcard-session-mobile-header .mobile-sentence-pagination-status{flex-wrap:wrap;justify-content:center;gap:.45rem;min-width:0;display:flex}.flashcard-session-mobile-header .flashcard-none-due-text{color:var(--text-primary);text-align:center;font-size:.88rem;font-weight:700;line-height:1}.flashcard-session-mobile-header .flashcard-loading-chip{background:0 0;border:0;justify-content:center;align-items:center;min-height:1.95rem;padding:.34rem .68rem;display:inline-flex}.flashcard-session-mobile-header .mobile-sentence-progress-chip{border:1px solid color-mix(in srgb, var(--text-primary) 18%, transparent);background:var(--card-bg);min-height:1.95rem;color:color-mix(in srgb, var(--card-bg) 10%, var(--text-primary));white-space:nowrap;justify-content:center;align-items:center;padding:.34rem .68rem;font-size:.88rem;font-weight:700;line-height:1;display:inline-flex}.flashcard-session-mobile-header .mobile-sentence-icon-button{min-width:0;min-height:2.7rem;padding:.55rem}.flashcard-session-mobile-header .mobile-sentence-button-icon{flex:none;width:1.15rem;height:1.15rem;display:block}.flashcard-action-row .flashcard-card-counter{display:none}.flashcard-empty-none-due{background:0 0;padding:0}.flashcard-empty-none-due .fc-stats,.flashcard-empty-none-due .fc-stats-guest{background:0 0;border:0;padding:0}}@media (width<=640px){.flashcard-panel{padding:0}.flashcard-sync-toast-layer{top:var(--space-4);right:var(--space-4);left:var(--space-4)}.flashcard-sync-toast{max-width:none}.flashcard-deck-grid,.flashcard-stats,.flashcard-summary-ratings{grid-template-columns:1fr}.flashcard-rating-actions{gap:var(--space-2);grid-template-columns:repeat(3,minmax(0,1fr))}.flashcard-rating-button{font-size:var(--font-size-sm);padding:.8rem .55rem}.flashcard-card{min-height:15rem}.flashcard-trainer{flex-direction:column;min-height:26rem;display:flex}.flashcard-trainer .flashcard-action-row,.flashcard-trainer .flashcard-rating-actions{margin-top:auto}}:root[data-theme=dark] .flashcard-guest-hint{background:color-mix(in srgb, var(--border-color) 30%, var(--card-bg))}:root[data-theme=dark] .flashcard-sync-toast{border-color:var(--border-color);background:color-mix(in srgb, var(--border-color) 30%, var(--card-bg))}:root[data-theme=dark] .flashcard-sync-toast-warning{border-color:color-mix(in srgb, var(--state-warning-border) 40%, var(--border-color));background:color-mix(in srgb, var(--state-warning-border) 14%, var(--card-bg))}:root[data-theme=dark] .flashcard-deck-menu-btn:hover,:root[data-theme=dark] .flashcard-deck-menu-btn:focus-visible,:root[data-theme=dark] .flashcard-deck-menu-item:hover,:root[data-theme=dark] .flashcard-deck-menu-item:focus-visible,:root[data-theme=dark] .flashcard-deck-menu-confirm 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var(--accent-color) 12%, var(--card-bg));color:var(--text-primary)}.glossary-letter-button:disabled{opacity:.45;cursor:not-allowed}.glossary-entry-list{gap:var(--space-4);flex-direction:column;display:flex}.glossary-entry-card{gap:var(--space-3);padding:var(--space-5);scroll-margin-top:var(--space-4);border:1px solid var(--border-color);background:color-mix(in srgb, var(--card-bg) 94%, var(--bg-primary));box-shadow:var(--surface-shadow-card);flex-direction:column;display:flex}.glossary-entry-meta{font-size:var(--font-size-xs);font-weight:var(--font-weight-heavy);letter-spacing:var(--letter-spacing-caps);text-transform:uppercase;color:var(--text-secondary)}.glossary-entry-card 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transparent);flex-direction:column;display:flex}.glossary-entry-section h4,.glossary-entry-section p,.glossary-entry-examples{margin:0}.glossary-entry-section h4{font-size:var(--font-size-base);color:var(--text-secondary)}.glossary-entry-section p,.glossary-entry-examples li{color:var(--text-secondary);line-height:var(--line-height-relaxed)}.glossary-entry-examples{padding-left:var(--space-5)}.glossary-example-highlight{font-weight:var(--font-weight-heavy);color:var(--accent-color)}.glossary-transformation-table{gap:var(--space-2);flex-direction:column;display:flex}.glossary-transformation-header,.glossary-example-transformation{gap:var(--space-3);grid-template-columns:minmax(0,1fr) auto 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a:focus-visible{color:var(--text-primary)}.glossary-conjugation-table-stack{gap:var(--space-3);flex-direction:column;display:flex}.glossary-conjugation-table-wrapper{overflow-x:auto}.glossary-conjugation-table{border-collapse:collapse;table-layout:fixed;border:1px solid color-mix(in srgb, var(--border-color) 78%, transparent);width:100%}.glossary-conjugation-col-label{width:9.5rem}.glossary-conjugation-col-value{width:calc(50% - 4.75rem)}.glossary-conjugation-table th,.glossary-conjugation-table td{border:1px solid color-mix(in srgb, var(--border-color) 68%, transparent);text-align:left;padding:.65rem .75rem}.glossary-conjugation-table th{font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);color:var(--text-secondary);background:color-mix(in srgb, var(--bg-primary) 55%, var(--card-bg))}.glossary-conjugation-table td{color:var(--text-primary);background:color-mix(in srgb, var(--card-bg) 96%, var(--bg-primary))}.glossary-conjugation-table tbody th{font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);color:var(--text-secondary);background:color-mix(in srgb, var(--bg-primary) 42%, var(--card-bg))}.glossary-empty-state{gap:var(--space-2);padding:var(--space-5);border:1px dashed color-mix(in srgb, var(--border-color) 82%, transparent);background:color-mix(in srgb, var(--card-bg) 74%, var(--bg-primary));flex-direction:column;display:flex}@media (width<=768px){.glossary-shell{width:100%;max-width:none;padding:var(--space-3) 0 var(--page-padding-mobile-y)}.glossary-card{gap:calc(var(--space-8) + var(--space-1))}.glossary-toolbar{display:none}.glossary-header h2{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.glossary-section+.glossary-section{padding-top:calc(var(--space-6) + var(--space-1));border-top:none;position:relative}.glossary-section+.glossary-section:before{content:"";top:0;left:calc(-1 * var(--page-padding-mobile-x));right:calc(-1 * var(--page-padding-mobile-x));background:var(--glossary-divider-color);height:1px;position:absolute}.glossary-entry-card,.glossary-empty-state{margin-inline:calc(-1 * var(--page-padding-mobile-x));padding-left:var(--page-padding-mobile-x);padding-right:var(--page-padding-mobile-x);box-shadow:none;border-left:none;border-right:none}.glossary-transformation-header,.glossary-example-transformation{grid-template-columns:minmax(0,1fr)}.glossary-transformation-header{display:none}.glossary-transformation-body{gap:var(--space-4)}.glossary-example-transformation{gap:var(--space-2);padding:var(--space-3) 0;border-top:1px solid color-mix(in srgb, var(--border-color) 72%, transparent)}.glossary-example-transformation:first-child{border-top:none;padding-top:0}.glossary-example-text{gap:var(--space-1);padding:var(--space-3);border:1px solid color-mix(in srgb, var(--border-color) 78%, transparent);background:color-mix(in srgb, var(--card-bg) 96%, var(--bg-primary));flex-direction:column;display:flex}.glossary-example-text:before{content:attr(data-mobile-label);font-size:var(--font-size-xs);font-weight:var(--font-weight-heavy);letter-spacing:var(--letter-spacing-caps);text-transform:uppercase;color:var(--text-secondary)}.glossary-example-transform-spacer{display:none}.glossary-example-transform-icon{place-self:center;transform:rotate(90deg)}}.user-view{--user-section-divider-color:color-mix(in srgb, var(--divider-strong) 32%, transparent);--user-settings-panel-bg:color-mix(in srgb, var(--card-bg) 96%, var(--bg-primary));--user-settings-row-bg:var(--card-bg);--user-settings-row-hover-bg:color-mix(in srgb, var(--card-bg) 92%, var(--bg-primary));--user-settings-row-active-border:color-mix(in srgb, var(--accent-color) 52%, var(--border-color));--user-settings-row-active-bg:color-mix(in srgb, var(--card-bg) 88%, var(--bg-primary))}:root[data-theme=dark] .user-view{--user-section-divider-color:color-mix(in srgb, #f3c26b 18%, var(--border-color));--user-settings-panel-bg:color-mix(in srgb, #18263b 88%, var(--bg-primary));--user-settings-row-bg:#172235;--user-settings-row-hover-bg:color-mix(in srgb, #1b2a40 58%, var(--card-bg));--user-settings-row-active-border:color-mix(in srgb, #ff9a1f 44%, var(--border-color));--user-settings-row-active-bg:color-mix(in srgb, #1b2a40 74%, var(--card-bg))}.user-overview-shell{width:min(100%, var(--content-width-legal));padding:var(--page-padding-y) 0;margin:0 auto}.user-overview-card{gap:var(--space-8)}.user-view .user-overview-card.empty-content{margin:0 auto;padding-top:0}.user-overview-header{gap:var(--space-3);text-align:left;flex-direction:column;display:flex}.user-overview-header-top{justify-content:space-between;align-items:flex-start;gap:var(--space-4);display:flex}.user-overview-header h2,.user-overview-header p,.user-overview-state h3,.user-overview-state p,.user-progress-card h3,.user-progress-card p{margin:0}.user-overview-header h2{font-size:var(--font-size-2xl)}.user-overview-header p,.user-overview-state p,.user-progress-empty{color:var(--text-secondary);line-height:var(--line-height-relaxed)}.user-overview-section{gap:var(--space-4);flex-direction:column;display:flex}.user-overview-section:first-of-type{gap:var(--space-1)}.user-overview-section+.user-overview-section{padding-top:var(--space-6);border-top:1px solid var(--user-section-divider-color);margin-top:0}.user-overview-section-header{gap:var(--space-1);flex-direction:column;display:flex}.user-overview-section-header h3{font-size:var(--font-size-lg);color:var(--text-primary);text-align:left;align-self:flex-start;margin:0}.user-overview-section-card{gap:var(--space-3);padding:var(--space-4);border:1px solid var(--border-color);background:color-mix(in srgb, var(--card-bg) 94%, var(--bg-primary));text-align:left;flex-direction:column;display:flex}.user-overview-detail-line{gap:var(--space-2);color:var(--text-primary);flex-wrap:wrap;margin:0;display:flex}.user-overview-detail-label{font-weight:var(--font-weight-heavy)}.user-overview-settings-card{gap:var(--space-3);background:0 0;border:none;padding:0;overflow:visible}.user-overview-danger-card{gap:var(--space-4);border-color:color-mix(in srgb, var(--danger-text,#8c2d2d) 24%, var(--border-color));background:color-mix(in srgb, var(--card-bg) 88%, #fff0ec)}.user-overview-danger-copy,.user-overview-danger-actions,.user-overview-danger-confirm,.user-overview-danger-field{flex-direction:column;display:flex}.user-overview-danger-copy,.user-overview-danger-confirm{gap:var(--space-2)}.user-overview-danger-title,.user-overview-danger-description,.user-overview-danger-status,.user-overview-danger-error{margin:0}.user-overview-danger-title{font-weight:var(--font-weight-heavy);color:var(--text-primary)}.user-overview-danger-description,.user-overview-danger-status{color:var(--text-secondary);line-height:var(--line-height-relaxed)}.user-overview-danger-status{color:var(--danger-text,#8c2d2d)}.user-overview-danger-actions{gap:var(--space-3)}.user-overview-danger-trigger,.user-overview-danger-confirm-actions button{border:1px solid color-mix(in srgb, var(--danger-text,#8c2d2d) 34%, var(--border-color));background:color-mix(in srgb, var(--bg-primary) 82%, white);color:var(--text-primary);font:inherit}.user-overview-danger-trigger,.user-overview-danger-confirm-actions button:first-child{background:color-mix(in srgb, var(--danger-text,#8c2d2d) 12%, var(--bg-primary))}:root[data-theme=dark] .user-overview-danger-trigger,:root[data-theme=dark] .user-overview-danger-confirm-actions button:first-child{background:color-mix(in srgb, var(--state-danger-border) 42%, #000)}.user-overview-danger-trigger{cursor:pointer;align-self:flex-start;padding:.75rem 1rem}.user-overview-danger-field{gap:var(--space-1);color:var(--text-primary);font-weight:var(--font-weight-semibold)}.user-overview-danger-field input{border:1px solid color-mix(in srgb, var(--border-color) 86%, transparent);background:var(--card-bg);color:var(--text-primary);font:inherit;padding:.7rem .85rem}.user-overview-danger-error{color:var(--danger-text,#8c2d2d);font-size:var(--font-size-sm);line-height:var(--line-height-relaxed)}.user-overview-danger-confirm-actions{gap:var(--space-2);flex-wrap:wrap;display:flex}.user-overview-danger-confirm-actions button{cursor:pointer;padding:.7rem .95rem}.user-overview-danger-trigger:disabled,.user-overview-danger-confirm-actions button:disabled{opacity:.6;cursor:wait}.user-overview-setting-row{justify-content:space-between;align-items:center;gap:var(--space-4);padding:var(--space-4) calc(var(--space-4) + .9rem) var(--space-4) var(--space-4);border:1px solid color-mix(in srgb, var(--border-color) 86%, transparent);background:var(--user-settings-row-bg);color:var(--text-primary);cursor:pointer;transition:border-color var(--motion-duration-fast) ease, background var(--motion-duration-fast) ease;display:flex;position:relative}.user-overview-setting-row:hover{border-color:color-mix(in srgb, var(--accent-color) 30%, var(--border-color));background:var(--user-settings-row-hover-bg)}:is(.user-overview-setting-row:has(input:disabled),.user-overview-setting-row:has(select:disabled)){opacity:.7}.user-overview-setting-row:has(input:disabled){cursor:not-allowed}.user-overview-setting-row:has(select:disabled) .user-overview-setting-copy{opacity:.9}:is(.user-overview-setting-row:has(input:disabled):hover,.user-overview-setting-row:has(select:disabled):hover){border-color:color-mix(in srgb, var(--border-color) 86%, transparent);background:var(--user-settings-row-bg)}.user-overview-setting-row:last-child{margin-bottom:var(--space-3)}.user-overview-setting-row:has(input:checked){box-shadow:inset 0 0 0 1px var(--user-settings-row-active-border);background:var(--user-settings-row-active-bg)}.user-overview-setting-copy{gap:var(--space-1);flex-direction:column;min-width:0;display:flex}.user-overview-setting-title{font-weight:var(--font-weight-semibold)}.user-overview-setting-description{color:var(--text-secondary);line-height:var(--line-height-relaxed)}.user-overview-setting-actions{margin-top:calc(var(--space-2) * -1);justify-content:flex-end;display:flex}.user-overview-setting-button{border:1px solid color-mix(in srgb, var(--border-color) 82%, transparent);background:color-mix(in srgb, var(--card-bg) 90%, var(--bg-primary));color:var(--text-primary);font:inherit;font-size:var(--font-size-sm);cursor:pointer;padding:.5rem .75rem}.user-overview-setting-button:hover{border-color:color-mix(in srgb, var(--accent-color) 30%, var(--border-color))}.user-overview-setting-button:disabled{border-color:color-mix(in srgb, var(--border-color) 72%, transparent);background:color-mix(in srgb, var(--card-bg) 72%, var(--bg-primary));color:var(--text-secondary);opacity:.7;cursor:not-allowed}.user-overview-setting-button:disabled:hover{border-color:color-mix(in srgb, var(--border-color) 72%, transparent)}.user-overview-setting-row input[type=checkbox]{top:50%;right:calc(var(--space-4) + .35rem);opacity:0;cursor:pointer;z-index:2;block-size:1.95rem;inline-size:3.35rem;margin:0;position:absolute;transform:translateY(-50%)}.user-overview-setting-row-number{cursor:default}.user-overview-setting-number-input{border:1px solid color-mix(in srgb, var(--border-color) 86%, transparent);background:var(--card-bg);inline-size:6.5rem;color:var(--text-primary);font:inherit;flex:none;padding:.7rem .85rem}.user-overview-setting-row-select{cursor:default}.user-overview-setting-select{border:1px solid color-mix(in srgb, var(--border-color) 86%, transparent);background:var(--card-bg);color:var(--text-primary);font:inherit;font-size:var(--font-size-sm);border-radius:0;flex:none;padding:.5rem 1rem .5rem .75rem}.user-overview-setting-select:disabled,.user-overview-setting-number-input:disabled{cursor:not-allowed;opacity:.75;background:color-mix(in srgb, var(--card-bg) 84%, var(--bg-primary))}.user-overview-setting-switch{border:1px solid color-mix(in srgb, var(--border-color) 85%, transparent);background:color-mix(in srgb, var(--border-color) 75%, var(--bg-primary));pointer-events:none;block-size:1.95rem;inline-size:3.35rem;transition:background var(--motion-duration-fast) ease, border-color var(--motion-duration-fast) ease;border-radius:999px;flex:none;position:relative}.user-overview-setting-switch-thumb{block-size:1.45rem;inline-size:1.45rem;transition:transform var(--motion-duration-fast) ease, background var(--motion-duration-fast) ease;background:#fff;border-radius:50%;position:absolute;top:.16rem;left:.16rem;box-shadow:0 .2rem .45rem #00000029,inset 0 1px #ffffff80}.user-overview-setting-row:has(input:checked) .user-overview-setting-switch{background:linear-gradient(90deg, color-mix(in srgb, var(--accent-color) 82%, white), var(--accent-color));border-color:color-mix(in srgb, var(--accent-color) 60%, transparent)}.user-overview-setting-row:has(input:checked) .user-overview-setting-switch-thumb{transform:translate(1.38rem)}.user-overview-setting-row:has(input:disabled) .user-overview-setting-switch{border-color:color-mix(in srgb, var(--border-color) 72%, transparent);background:color-mix(in srgb, var(--border-color) 58%, var(--bg-primary))}.user-overview-setting-row:has(input:disabled) .user-overview-setting-switch-thumb{background:color-mix(in srgb, white 82%, var(--bg-primary))}.user-overview-setting-row:has(input:focus-visible){outline:var(--focus-outline-width) solid var(--accent-color);outline-offset:var(--focus-outline-offset-md)}.user-overview-state{align-items:flex-start;gap:var(--space-3);flex-direction:column;display:flex}.user-progress-list{gap:var(--space-5);flex-direction:column;display:flex}.user-progress-card{gap:var(--space-4);padding:var(--space-5);border:1px solid var(--border-color);background:color-mix(in srgb, var(--card-bg) 92%, var(--bg-primary));box-shadow:var(--surface-shadow-card);text-align:left;flex-direction:column;display:flex}.user-progress-card-skeleton{pointer-events:none}.user-progress-card-header{justify-content:space-between;align-items:flex-start;gap:var(--space-4);display:flex}.user-progress-card-copy{align-items:flex-start;gap:var(--space-1);flex-direction:column;min-width:0;display:flex}.user-progress-card-kicker,.user-progress-breakdown-label,.user-progress-summary-label{font-size:var(--font-size-xs);font-weight:var(--font-weight-heavy);letter-spacing:var(--letter-spacing-caps);text-transform:uppercase;color:var(--text-secondary)}.user-progress-card h3{font-size:var(--font-size-xl);line-height:var(--line-height-snug);color:var(--text-primary)}.user-progress-card-actions{align-items:flex-start;gap:var(--space-2);flex:none;display:flex}.user-progress-card-menu{flex:none;position:relative}.user-progress-card-menu-btn,.user-progress-toggle{border:1px solid var(--border-color);background:var(--bg-primary);min-width:2.25rem;min-height:2.25rem;color:var(--text-primary);font:inherit;font-size:var(--font-size-xl);cursor:pointer;flex:none;line-height:1}.user-progress-card-menu-btn:hover:not(:disabled),.user-progress-toggle:hover:not(:disabled){border-color:color-mix(in srgb, var(--accent-color) 34%, var(--border-color));background:color-mix(in srgb, var(--bg-primary) 84%, var(--card-bg))}.user-progress-card-menu-btn:disabled,.user-progress-toggle:disabled{opacity:.6;cursor:wait}.user-progress-toggle:focus-visible,.user-progress-card-menu-btn:focus-visible,.user-progress-exercise-row:focus-visible,.user-progress-card-menu-dropdown button:focus-visible{outline:var(--focus-outline-width) solid var(--accent-color);outline-offset:var(--focus-outline-offset-md)}.user-progress-card-menu-dropdown{top:calc(100% + var(--space-2));z-index:3;min-inline-size:13rem;max-inline-size:min(18rem,100vw - 2rem);padding:var(--space-2);border:1px solid color-mix(in srgb, var(--border-color) 86%, transparent);background:color-mix(in srgb, var(--card-bg) 98%, var(--bg-primary));box-shadow:var(--surface-shadow-card);position:absolute;right:0}.user-progress-card-menu-item,.user-progress-card-menu-confirm button{border:1px solid color-mix(in srgb, var(--border-color) 85%, transparent);background:var(--bg-primary);width:100%;color:var(--text-primary);font:inherit;text-align:left}.user-progress-card-menu-item{cursor:pointer;padding:.7rem .85rem}.user-progress-card-menu-item:hover{border-color:color-mix(in srgb, var(--accent-color) 36%, var(--border-color))}.user-progress-card-menu-confirm{gap:var(--space-2);flex-direction:column;display:flex}.user-progress-card-menu-confirm span{color:var(--text-primary);font-size:var(--font-size-sm);line-height:var(--line-height-relaxed)}.user-progress-card-menu-confirm button{cursor:pointer;padding:.7rem .85rem}.user-progress-card-menu-confirm button:first-of-type{border-color:color-mix(in srgb, var(--accent-color) 40%, var(--border-color));background:color-mix(in srgb, var(--accent-color) 14%, var(--bg-primary))}.user-progress-card-menu-confirm button:disabled{opacity:.6;cursor:wait}.user-progress-card-error{color:var(--danger-text,#8c2d2d);font-size:var(--font-size-sm);line-height:var(--line-height-relaxed)}.user-progress-summary{gap:var(--space-2);padding:var(--space-4);border:1px solid color-mix(in srgb, var(--border-color) 78%, transparent);background:color-mix(in srgb, var(--bg-primary) 75%, var(--card-bg));flex-direction:column;display:flex}.user-progress-summary-topline,.user-progress-exercise-topline,.user-progress-summary-scoreline,.user-progress-exercise-scoreline{justify-content:space-between;align-items:center;gap:var(--space-3);display:flex}.user-progress-summary-percent,.user-progress-exercise-percent{font-weight:var(--font-weight-heavy);color:var(--text-primary)}.user-progress-summary-scoreline,.user-progress-exercise-scoreline{font-weight:var(--font-weight-bold);color:var(--text-primary);justify-content:flex-start}.user-progress-summary-bar,.user-progress-exercise-bar{background:color-mix(in srgb, var(--border-color) 70%, var(--bg-primary));width:100%;height:.78rem;overflow:hidden}.user-progress-summary-bar-fill,.user-progress-exercise-bar-fill{background:linear-gradient(90deg, color-mix(in srgb, var(--accent-color) 82%, white), var(--accent-color));height:100%;display:block}.user-progress-breakdown{gap:var(--space-3);padding-top:var(--space-4);border-top:1px solid var(--user-section-divider-color);flex-direction:column;display:flex}.user-progress-exercise-row{gap:var(--space-2);width:100%;padding:var(--space-3) var(--space-4);border:1px solid color-mix(in srgb, var(--border-color) 82%, transparent);background:var(--bg-primary);color:inherit;font:inherit;text-align:left;cursor:pointer;flex-direction:column;align-items:stretch;display:flex}.user-progress-exercise-row:hover{border-color:var(--accent-color)}.user-progress-exercise-title{font-weight:var(--font-weight-semibold);color:var(--text-primary)}.user-progress-skeleton-kicker{width:5.5rem;height:.8rem}.user-progress-skeleton-title{width:min(22rem,100%);height:1.7rem}.user-progress-skeleton-toggle{flex:none;width:2.25rem;height:2.25rem}.user-progress-skeleton-label{width:8rem;height:.8rem}.user-progress-skeleton-percent{width:3rem;height:1rem}.user-progress-skeleton-score{width:4.5rem;height:1.2rem}.user-progress-skeleton-bar{width:100%;height:.78rem}@media (width<=768px){.user-overview-header{display:none}.user-overview-shell{width:100%;max-width:none;padding:var(--page-padding-mobile-y) 0}.user-overview-card{gap:calc(var(--space-8) + var(--space-1))}.user-overview-section{gap:var(--space-5)}.user-overview-section+.user-overview-section{padding-top:calc(var(--space-6) + var(--space-1));border-top:none;margin-top:0;position:relative}.user-overview-section+.user-overview-section:before{content:"";top:0;left:calc(-1 * var(--page-padding-mobile-x));right:calc(-1 * var(--page-padding-mobile-x));background:var(--user-section-divider-color);height:1px;position:absolute}.user-overview-section-card,.user-progress-card,.user-progress-summary,.user-progress-exercise-row{margin-inline:calc(-1 * var(--page-padding-mobile-x))}.user-overview-section-card,.user-progress-card{padding:var(--space-4) var(--page-padding-mobile-x);box-shadow:none;background:0 0;border:none}.user-overview-settings-card{gap:var(--space-3);background:0 0;border:none;margin-inline:0;padding:0}.user-overview-danger-card{margin-inline:calc(-1 * var(--page-padding-mobile-x));background:color-mix(in srgb, var(--bg-primary) 90%, #fff0ec);border-left:none;border-right:none}.user-overview-setting-row{align-items:flex-start;gap:var(--space-4);border:1px solid color-mix(in srgb, var(--border-color) 86%, transparent);background:var(--user-settings-row-bg);padding:.5rem 1rem .5rem .75rem}.user-overview-setting-row:hover{background:var(--user-settings-row-hover-bg)}.user-overview-setting-row:has(input:checked){background:var(--user-settings-row-active-bg)}.user-overview-setting-row input[type=checkbox]{top:0;right:.5rem;transform:none}.user-overview-setting-description{display:none}.user-progress-summary,.user-progress-exercise-row{padding-left:var(--page-padding-mobile-x);padding-right:var(--page-padding-mobile-x)}.user-progress-card-actions{gap:.45rem}.user-progress-card-menu-btn,.user-progress-toggle{min-width:2.5rem;min-height:2.5rem}.user-progress-card-menu-dropdown{min-inline-size:min(14rem, calc(100vw - (var(--page-padding-mobile-x) * 2)));max-inline-size:calc(100vw - (var(--page-padding-mobile-x) * 2));right:0}.user-progress-summary{padding-top:var(--space-4);padding-bottom:var(--space-4);border-top:1px solid var(--user-section-divider-color);border-bottom:1px solid var(--user-section-divider-color);background:color-mix(in srgb, var(--bg-primary) 82%, var(--card-bg));border-left:none;border-right:none}.user-progress-exercise-row{padding-top:var(--space-3);padding-bottom:var(--space-3);border-bottom:none;border-left:none;border-right:none}}.theme-toggle{width:var(--control-size-xl);height:var(--control-size-xl);color:var(--text-primary);cursor:pointer;transition:color var(--duration-base) var(--easing-standard), transform var(--duration-base) var(--easing-standard), background-color var(--duration-base) var(--easing-standard);background:0 0;border:0;justify-content:center;align-items:center;padding:0;display:inline-flex}.theme-toggle:hover{background:color-mix(in srgb, var(--text-primary) 8%, transparent)}.theme-toggle:active{transform:scale(.96)}.theme-toggle:focus-visible{outline:var(--focus-outline-width) solid var(--accent-color);outline-offset:var(--focus-outline-offset-md)}.theme-toggle-icon-shell{width:var(--icon-size-md);height:var(--icon-size-md);display:inline-flex;position:relative}.theme-toggle-icon{transition:opacity var(--duration-base) var(--easing-standard), transform var(--duration-base) var(--easing-standard), color var(--duration-base) var(--easing-standard);justify-content:center;align-items:center;display:inline-flex;position:absolute;inset:0}.theme-toggle-svg{width:100%;height:100%;display:block}.theme-toggle-light .theme-toggle-icon-sun{opacity:1;color:var(--theme-toggle-sun-color);transform:rotate(0)scale(1)}.theme-toggle-light .theme-toggle-icon-moon{opacity:0;color:var(--text-primary);transform:rotate(28deg)scale(.72)}.theme-toggle-dark .theme-toggle-icon-sun{opacity:0;color:var(--text-primary);transform:rotate(-28deg)scale(.72)}.theme-toggle-dark .theme-toggle-icon-moon{opacity:1;color:var(--theme-toggle-moon-color);transform:rotate(0)scale(1)}.theme-toggle-compact{width:var(--control-size-lg);height:var(--control-size-lg)}.theme-toggle-compact .theme-toggle-icon-shell{width:var(--icon-size-sm);height:var(--icon-size-sm)}.sidebar{--sidebar-scale-compensation:calc(1 / var(--text-scale,1));--sidebar-width-stable:calc(var(--sidebar-width) * var(--sidebar-scale-compensation));--sidebar-width-collapsed-stable:calc(var(--sidebar-width-collapsed) * var(--sidebar-scale-compensation));--sidebar-width-mobile-stable:min(calc(21rem * var(--sidebar-scale-compensation)), 86vw);width:var(--sidebar-width-stable);background:var(--sidebar-bg);border-right:1px solid var(--border-sidebar);font-size:calc(1rem * var(--sidebar-scale-compensation));height:100vh;transition:width var(--duration-slow) var(--easing-standard);flex-direction:column;display:flex;position:sticky;top:0;overflow:hidden}.sidebar.sidebar-collapsed{width:var(--sidebar-width-collapsed-stable)}.sidebar-header{padding:calc(var(--space-8) * var(--sidebar-scale-compensation)) calc(var(--space-6) * var(--sidebar-scale-compensation));border-bottom:1px solid var(--border-section)}.sidebar-header-top{justify-content:space-between;align-items:flex-start;gap:calc(.9rem * var(--sidebar-scale-compensation));display:flex}.sidebar-header-copy{flex:1;min-width:0}.sidebar-title-row{justify-content:space-between;align-items:center;gap:calc(.75rem * var(--sidebar-scale-compensation));display:flex}.sidebar-header-controls{align-items:center;gap:calc(.6rem * var(--sidebar-scale-compensation));display:inline-flex}.sidebar-title-row h2{font-family:var(--font-family-display);font-size:calc(var(--font-size-2xl) * var(--sidebar-scale-compensation));color:var(--text-ink-warm);font-weight:var(--font-weight-heavy);letter-spacing:var(--letter-spacing-tight);margin:0}.lang-select-shell{background:var(--text-secondary);clip-path:polygon(12% 0,88% 0,100% 50%,88% 100%,12% 100%,0 50%);justify-content:center;align-items:center;padding:2px;display:inline-flex}.lang-select{appearance:none;background:var(--sidebar-bg);border-radius:var(--radius-none);color:var(--text-secondary);font-size:calc(var(--font-size-sm) * var(--sidebar-scale-compensation));font-weight:var(--font-weight-bold);padding:calc(var(--space-2) * var(--sidebar-scale-compensation)) calc(var(--space-4) * var(--sidebar-scale-compensation));cursor:pointer;transition:all var(--duration-base) var(--easing-standard);clip-path:polygon(12% 0,88% 0,100% 50%,88% 100%,12% 100%,0 50%);border:0}.lang-select-collapsed{font-size:calc(var(--font-size-xs) * var(--sidebar-scale-compensation));padding:calc(var(--space-1-5) * var(--sidebar-scale-compensation)) calc(var(--space-2-5) * var(--sidebar-scale-compensation))}.lang-select-shell:hover,.lang-select-shell:focus-within{background:var(--text-primary)}.lang-select:hover,.lang-select:focus{color:var(--text-primary);outline:none}.subtitle{margin:calc(var(--space-2) * var(--sidebar-scale-compensation)) 0 0;font-size:calc(var(--font-size-sm) * var(--sidebar-scale-compensation));color:var(--text-secondary);font-weight:var(--font-weight-semibold);text-transform:uppercase;letter-spacing:var(--letter-spacing-caps)}.sidebar-close{min-width:calc(var(--control-size-lg) * var(--sidebar-scale-compensation));min-height:calc(var(--control-size-lg) * var(--sidebar-scale-compensation));border:1px solid var(--border-color);background:var(--card-bg);color:var(--text-primary);font:inherit;font-size:calc(var(--font-size-base) * var(--sidebar-scale-compensation));font-weight:var(--font-weight-heavy);cursor:pointer;flex:none;justify-content:center;align-items:center;display:none}.sidebar-close:focus-visible{outline:var(--focus-outline-width) solid var(--accent-color);outline-offset:var(--focus-outline-offset-md)}.sidebar.sidebar-collapsed .sidebar-header{padding:calc((var(--space-5) + var(--space-0-5)) * var(--sidebar-scale-compensation)) calc(var(--space-3) * var(--sidebar-scale-compensation)) calc(var(--space-4) * var(--sidebar-scale-compensation))}.sidebar.sidebar-collapsed .sidebar-header-top,.sidebar.sidebar-collapsed .sidebar-title-row{justify-content:center}.sidebar.sidebar-collapsed .sidebar-header-copy{justify-content:center;display:flex}.sidebar.sidebar-collapsed .sidebar-header-controls{justify-content:center}.sidebar.sidebar-collapsed .sidebar-title-row h2{font-size:calc(var(--font-size-base) * var(--sidebar-scale-compensation));letter-spacing:var(--letter-spacing-caps)}.sidebar-nav{--sidebar-nav-padding-top:calc(1.5rem * var(--sidebar-scale-compensation));--sidebar-nav-right-mask:calc(2rem * var(--sidebar-scale-compensation));justify-content:flex-start;gap:calc(1.4rem * var(--sidebar-scale-compensation));min-height:0;padding:var(--sidebar-nav-padding-top) calc(1rem * var(--sidebar-scale-compensation)) calc(2rem * var(--sidebar-scale-compensation));isolation:isolate;scrollbar-gutter:stable;scrollbar-width:thin;scrollbar-color:color-mix(in srgb, var(--text-secondary) 24%, var(--sidebar-bg)) color-mix(in srgb, var(--sidebar-bg) 92%, white);flex-direction:column;flex:1;display:flex;position:relative;overflow:hidden auto}.sidebar-nav:before{content:"";top:0;left:0;right:calc(-1 * var(--sidebar-nav-right-mask));height:var(--sidebar-nav-padding-top);background:var(--sidebar-bg);pointer-events:none;z-index:7;position:absolute}[data-theme=dark] .sidebar-nav{scrollbar-color:color-mix(in srgb, var(--text-primary) 52%, var(--border-color)) color-mix(in srgb, var(--sidebar-bg) 78%, #0b1220)}.sidebar-nav::-webkit-scrollbar{width:.72rem}.sidebar-nav::-webkit-scrollbar-track{background:color-mix(in srgb, var(--sidebar-bg) 92%, white)}.sidebar-nav::-webkit-scrollbar-thumb{background:color-mix(in srgb, var(--text-secondary) 24%, var(--sidebar-bg));border:.16rem solid color-mix(in srgb, var(--sidebar-bg) 92%, white)}.sidebar-nav::-webkit-scrollbar-thumb:hover{background:color-mix(in srgb, var(--text-secondary) 38%, var(--sidebar-bg))}[data-theme=dark] .sidebar-nav::-webkit-scrollbar-track{background:color-mix(in srgb, var(--sidebar-bg) 78%, #0b1220)}[data-theme=dark] .sidebar-nav::-webkit-scrollbar-thumb{background:color-mix(in srgb, var(--text-primary) 52%, var(--border-color));border-color:color-mix(in srgb, var(--sidebar-bg) 78%, #0b1220)}[data-theme=dark] .sidebar-nav::-webkit-scrollbar-thumb:hover{background:color-mix(in srgb, var(--text-primary) 68%, var(--border-color))}.sidebar-nav-list{flex:none}.sidebar-aux-links{font-size:calc(.8rem * var(--sidebar-scale-compensation));color:var(--text-muted);justify-content:center;align-items:center;gap:calc(.35rem * var(--sidebar-scale-compensation));padding:calc(.1rem * var(--sidebar-scale-compensation)) calc(1rem * var(--sidebar-scale-compensation)) calc(.4rem * var(--sidebar-scale-compensation));flex-direction:row;display:flex}.sidebar-aux-links button{color:inherit;font:inherit;cursor:pointer;text-align:left;background:0 0;border:0;margin:0;padding:0;text-decoration:none}.sidebar-aux-links button:hover,.sidebar-aux-links button:focus-visible{text-decoration:underline}.sidebar-aux-links button.active{color:var(--text-ink-strong);text-underline-offset:.16em;text-decoration:underline;text-decoration-thickness:.08em}.sidebar.sidebar-collapsed .sidebar-aux-links{flex-direction:column;align-items:center}.sidebar-aux-separator{display:inline-block}.sidebar.sidebar-collapsed .sidebar-aux-separator{display:none}.sidebar.sidebar-collapsed .sidebar-nav{--sidebar-nav-padding-top:calc(1rem * var(--sidebar-scale-compensation));padding:var(--sidebar-nav-padding-top) calc(.6rem * var(--sidebar-scale-compensation)) calc(.5rem * var(--sidebar-scale-compensation))}.sidebar-nav ul{margin:0;padding:0;list-style:none}.nav-item-group{margin-bottom:calc(.5rem * var(--sidebar-scale-compensation));position:relative}.sidebar-nav-sticky-user{z-index:10;margin-right:calc(-1 * var(--sidebar-nav-right-mask));padding-right:var(--sidebar-nav-right-mask);padding-top:calc(.1rem * var(--sidebar-scale-compensation));padding-bottom:calc(.4rem * var(--sidebar-scale-compensation));background:var(--sidebar-bg);isolation:isolate;position:sticky;top:0}.sidebar-nav-sticky-user:before{content:"";left:0;right:0;top:calc(-1.5rem * var(--sidebar-scale-compensation));height:calc(1.5rem * var(--sidebar-scale-compensation));background:var(--sidebar-bg);pointer-events:none;position:absolute}.sidebar.sidebar-collapsed .sidebar-nav-sticky-user:before{top:calc(-1rem * var(--sidebar-scale-compensation));height:calc(1rem * var(--sidebar-scale-compensation))}.sidebar-user-btn{box-shadow:var(--shadow-offset-strong)}.chapter-btn{text-align:left;background:var(--sidebar-bg);border:2px solid var(--text-secondary);width:100%;padding:calc(1rem * var(--sidebar-scale-compensation)) calc(1.15rem * var(--sidebar-scale-compensation)) calc(1.05rem * var(--sidebar-scale-compensation));color:var(--text-primary);font-size:calc(1rem * var(--sidebar-scale-compensation));cursor:pointer;align-items:flex-start;gap:calc(.25rem * var(--sidebar-scale-compensation));box-shadow:var(--shadow-offset);border-radius:0;flex-direction:column;font-weight:600;transition:all .2s;display:flex;position:relative;overflow:hidden}.chapter-btn:hover{background:var(--sidebar-bg);border-color:var(--text-ink-strong)}.chapter-btn.active{background:var(--sidebar-bg);border-color:var(--text-ink-strong);color:var(--text-ink-strong);box-shadow:var(--shadow-offset-strong)}.chapter-btn-expanded{border-color:var(--text-ink-strong)}.chapter-btn-expanded .chapter-btn-label{color:var(--text-ink-strong)}.chapter-btn-label{font-size:calc(1rem * var(--sidebar-scale-compensation));color:var(--text-secondary);letter-spacing:-.02em;font-weight:800}.chapter-btn-title{font-size:calc(.82rem * var(--sidebar-scale-compensation));color:var(--text-secondary);font-weight:600;line-height:1.3}.chapter-btn-title-active{color:var(--text-ink-strong)}.sub-nav{border-left:2px solid var(--text-secondary);transform-origin:top;transition:max-height .2s ease-out,opacity .16s ease-out,margin-top .2s ease-out,transform .2s ease-out,border-color .16s ease-out;overflow:hidden;margin-top:calc(.6rem * var(--sidebar-scale-compensation))!important;margin-left:calc(1rem * var(--sidebar-scale-compensation))!important;padding-left:calc(.85rem * var(--sidebar-scale-compensation))!important}.sub-nav li{margin-bottom:calc(.12rem * var(--sidebar-scale-compensation))}.sub-nav-expanded{max-height:calc((var(--sub-nav-item-count,1) * 2.8rem * var(--sidebar-scale-compensation)) + (.75rem * var(--sidebar-scale-compensation)));opacity:1;transform:translateY(0)}.sub-nav-collapsed-state{opacity:0;max-height:0;transform:translateY(calc(-.35rem * var(--sidebar-scale-compensation)));pointer-events:none;border-color:#0000;margin-top:0!important}.sub-nav-collapsed{justify-content:stretch;justify-items:center;gap:calc(.35rem * var(--sidebar-scale-compensation));transform-origin:top;grid-template-columns:repeat(2,minmax(0,1fr));transition:max-height .18s ease-out,opacity .14s ease-out,margin-top .18s ease-out,transform .18s ease-out;display:grid;overflow:hidden;margin-top:calc(.45rem * var(--sidebar-scale-compensation))!important}.sub-nav-collapsed li{justify-content:center;width:100%;min-width:0;margin:0;display:flex}.sub-nav-collapsed-expanded{max-height:calc((var(--sub-nav-item-count,1) * 2.35rem * var(--sidebar-scale-compensation)) + (.4rem * var(--sidebar-scale-compensation)));opacity:1;transform:translateY(0)}.sub-nav-collapsed-state{opacity:0;max-height:0;transform:translateY(calc(-.25rem * var(--sidebar-scale-compensation)));pointer-events:none;margin-top:0!important}.sub-btn{text-align:left;width:100%;padding:calc(.42rem * var(--sidebar-scale-compensation)) calc(.8rem * var(--sidebar-scale-compensation));color:var(--text-secondary);font-size:calc(.9rem * var(--sidebar-scale-compensation));cursor:pointer;background:0 0;border:0;border-radius:0;font-weight:600;transition:all .2s}.sub-btn:hover{color:var(--text-primary);background-color:#0000}.sub-btn.active{color:var(--text-ink-strong);text-underline-offset:.16em;background:0 0;font-weight:700;text-decoration:underline;text-decoration-thickness:.08em}.sub-btn-collapsed{aspect-ratio:1;border:2px solid var(--text-secondary);background:var(--sidebar-bg);width:100%;min-width:0;max-width:100%;color:var(--text-secondary);font-size:calc(.72rem * var(--sidebar-scale-compensation));letter-spacing:.02em;cursor:pointer;border-radius:0;justify-content:center;align-items:center;padding:0;line-height:1;transition:border-color .2s,color .2s;display:inline-flex}.sub-btn-collapsed:hover{border-color:var(--text-ink-strong);color:var(--text-primary)}.sub-btn-collapsed.active{border-color:var(--text-ink-strong);color:var(--text-ink-strong)}.chapter-btn.current .chapter-btn-label{color:var(--text-ink-strong)}.nav-item-group-locked{isolation:isolate}.chapter-btn-locked{cursor:not-allowed;filter:saturate(.75)}.chapter-btn-locked:hover{border-color:var(--text-secondary);background:var(--sidebar-bg)}.chapter-btn-locked .chapter-btn-label,.chapter-btn-locked .chapter-btn-title{opacity:.52;filter:blur(.6px)}.chapter-lock-overlay{background:linear-gradient(180deg, color-mix(in srgb, var(--sidebar-bg) 54%, transparent), color-mix(in srgb, var(--sidebar-bg) 82%, transparent));-webkit-backdrop-filter:blur(1.5px);backdrop-filter:blur(1.5px);pointer-events:none;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.chapter-lock-icon{width:calc(2.4rem * var(--sidebar-scale-compensation));height:calc(2.4rem * var(--sidebar-scale-compensation));border:2px solid color-mix(in srgb, var(--text-secondary) 80%, transparent);background:color-mix(in srgb, var(--sidebar-bg) 88%, transparent);color:var(--text-ink-strong);box-shadow:var(--shadow-offset);justify-content:center;align-items:center;display:inline-flex}.chapter-lock-icon svg{width:calc(1.15rem * var(--sidebar-scale-compensation));height:calc(1.15rem * var(--sidebar-scale-compensation))}.sidebar.sidebar-collapsed .chapter-btn{padding:calc(.95rem * var(--sidebar-scale-compensation)) calc(.4rem * var(--sidebar-scale-compensation));text-align:center;box-shadow:0 3px 8px color-mix(in srgb, var(--text-ink-strong) 12%, transparent);justify-content:center;align-items:center}.sidebar.sidebar-collapsed .chapter-btn-label{font-size:calc(1.05rem * var(--sidebar-scale-compensation))}.sidebar.sidebar-collapsed .nav-item-group{margin-bottom:calc(.85rem * var(--sidebar-scale-compensation))}.sidebar-skeleton-list{flex-direction:column;gap:.9rem;display:flex}.sidebar-skeleton-group{flex-direction:column;gap:.55rem;display:flex}.sidebar-skeleton-chapter{border-radius:0;width:100%;height:4.25rem}.sidebar-skeleton-subnav{border-left:2px solid color-mix(in srgb, var(--border-color) 82%, transparent);flex-direction:column;gap:.5rem;margin-left:1rem;padding-left:.85rem;display:flex}.sidebar-skeleton-exercise{border-radius:.5rem;width:88%;height:.9rem}.sidebar-skeleton-exercise-short{width:66%}.sidebar-skeleton-subnav-collapsed{justify-content:center;gap:.35rem;display:flex}.sidebar-skeleton-pill{border-radius:0;width:2rem;height:2rem}.sidebar-footer{border-top:1px solid var(--border-section);padding:calc(.7rem * var(--sidebar-scale-compensation)) calc(.8rem * var(--sidebar-scale-compensation)) calc(.9rem * var(--sidebar-scale-compensation));justify-content:flex-start;align-items:stretch;gap:calc(.45rem * var(--sidebar-scale-compensation));flex-direction:column;display:flex}.sidebar-footer-controls{justify-content:flex-start;align-items:center;gap:calc(.6rem * var(--sidebar-scale-compensation));display:flex}.sidebar-account-trigger{flex:auto}.sidebar.sidebar-collapsed .sidebar-footer{align-items:center}.sidebar.sidebar-collapsed .sidebar-account-trigger{flex:none}.sidebar-collapse-toggle{width:auto;min-width:calc(2rem * var(--sidebar-scale-compensation));min-height:calc(2rem * var(--sidebar-scale-compensation));color:var(--text-primary);cursor:pointer;padding:calc(.2rem * var(--sidebar-scale-compensation));background:0 0;border:0;justify-content:center;align-items:center;display:inline-flex}.sidebar-collapse-toggle:focus-visible{outline:2px solid var(--accent-color);outline-offset:3px}.sidebar-collapse-icon{width:calc(.75rem * var(--sidebar-scale-compensation));height:calc(.75rem * var(--sidebar-scale-compensation));position:relative;transform:rotate(135deg)}.sidebar-collapse-icon:before,.sidebar-collapse-icon:after{content:"";border-bottom:2px solid;border-right:2px solid;position:absolute;inset:0}.sidebar-collapse-icon:after{transform:translate(calc(-.32rem * var(--sidebar-scale-compensation)), calc(-.32rem * var(--sidebar-scale-compensation)))}.sidebar-collapse-icon-expand{transform:rotate(-45deg)}.sidebar-collapse-icon-expand:after{transform:translate(calc(.32rem * var(--sidebar-scale-compensation)), calc(.32rem * var(--sidebar-scale-compensation)))}.sidebar-footer-links{font-size:calc(.75rem * var(--sidebar-scale-compensation));color:var(--text-muted);line-height:1.2}.sidebar-footer-links a{color:inherit;text-decoration:none}.sidebar-footer-links a:hover,.sidebar-footer-links a:focus-visible{text-decoration:underline}.sidebar.sidebar-collapsed .sidebar-footer-links{text-align:center}@media (width<=768px){.sidebar{width:var(--sidebar-width-mobile-stable);z-index:1200;height:100dvh;transition:transform var(--duration-slow) var(--easing-standard), box-shadow var(--duration-slow) var(--easing-standard);box-shadow:none;touch-action:pan-y;will-change:transform;border-right-width:1px;position:fixed;inset:0 auto 0 0;transform:translate(-100%)}.sidebar.sidebar-collapsed{width:var(--sidebar-width-mobile-stable)}.sidebar.sidebar-open{box-shadow:var(--sidebar-mobile-shadow);transform:translate(0)}.sidebar-header{padding:calc((var(--space-4) * var(--sidebar-scale-compensation)) + env(safe-area-inset-top,0px)) calc(var(--space-4) * var(--sidebar-scale-compensation)) calc(var(--space-4) * var(--sidebar-scale-compensation))}.sidebar-header-top{align-items:flex-start}.sidebar-close{align-self:center;display:inline-flex}.sidebar-nav{--sidebar-nav-padding-top:calc(var(--space-4) * var(--sidebar-scale-compensation));gap:calc(var(--space-4) * var(--sidebar-scale-compensation));padding:var(--sidebar-nav-padding-top) calc(var(--space-3-5) * var(--sidebar-scale-compensation)) calc(var(--space-6) * var(--sidebar-scale-compensation))}.chapter-btn{padding:calc((var(--space-3) + var(--space-0-5)) * var(--sidebar-scale-compensation)) calc((var(--space-3) + var(--space-1)) * var(--sidebar-scale-compensation));box-shadow:var(--surface-shadow-lifted-sm)}.chapter-btn.active{box-shadow:var(--surface-shadow-lifted-md)}.sub-nav{margin-left:calc(.7rem * var(--sidebar-scale-compensation))!important;padding-left:calc(.7rem * var(--sidebar-scale-compensation))!important}.sidebar-footer{padding:calc(var(--space-3) * var(--sidebar-scale-compensation)) calc(var(--space-3-5) * var(--sidebar-scale-compensation)) calc((var(--space-3) * var(--sidebar-scale-compensation)) + env(safe-area-inset-bottom,0px))}.sidebar-footer-controls,.sidebar-collapse-toggle{display:none}}.app-container{background:var(--bg-primary);width:100%;height:100vh;min-height:100vh;display:flex}.app-main-shell{flex-direction:column;flex:1;min-width:0;height:100vh;display:flex}.app-main-shell-sidebar-collapsed{flex-basis:0}.app-main-content{flex:1;min-height:0}.app-main-content-sidebar-collapsed{width:100%}.app-status-card{flex-direction:column;gap:1rem;display:flex}.app-status-card h2,.app-status-card p{margin:0}.shell-view .empty-content{max-width:var(--content-width-legal);width:100%;margin:var(--space-12) auto;box-shadow:none;border-radius:var(--radius-none);padding:var(--space-10) var(--space-7) var(--space-12);background:0 0}.legal-card,.legal-copy{text-align:left}.legal-card h2{font-size:var(--font-size-2xl)}.legal-copy h3{margin-top:var(--space-6);margin-bottom:var(--space-2);font-size:var(--font-size-lg)}.legal-copy p{margin-bottom:var(--space-3);font-size:var(--font-size-base);line-height:var(--line-height-relaxed)}.legal-copy ul{padding-left:var(--space-5);margin-bottom:var(--space-3)}.app-status-detail{font-size:var(--font-size-sm);line-height:var(--line-height-normal);color:var(--text-secondary)}.app-status-action{min-width:12rem;padding:var(--space-3) var(--space-4);border:1px solid var(--border-color);background:var(--bg-primary);color:var(--text-primary);font:inherit;font-weight:var(--font-weight-bold);cursor:pointer;transition:border-color var(--duration-base) var(--easing-standard), background-color var(--duration-base) var(--easing-standard), color var(--duration-base) var(--easing-standard);align-self:center}.app-status-action:hover,.app-status-action:focus-visible{border-color:var(--accent-color)}.app-status-action:focus-visible{outline:var(--focus-outline-width) solid var(--accent-color);outline-offset:var(--focus-outline-offset-md)}.app-sidebar-backdrop,.mobile-topbar{display:none}.mobile-topbar-actions{align-items:center;gap:.6rem;display:inline-flex}.mobile-account-button{border-color:var(--border-color);background:var(--card-bg)}.skeleton-block{border-radius:var(--radius-none);background:color-mix(in srgb, var(--border-color) 58%, var(--card-bg));position:relative;overflow:hidden}.skeleton-block:after{content:"";animation:skeleton-shimmer var(--duration-skeleton) var(--easing-emphasized) infinite;background:linear-gradient(90deg,#0000 0%,#ffffff57 50%,#0000 100%);position:absolute;inset:0;transform:translate(-100%)}.app-content-skeleton-view{min-height:100%;display:block}.app-content-skeleton-shell{max-width:var(--content-width-shell);padding:var(--page-padding-y) var(--page-padding-x);gap:var(--space-8);box-sizing:border-box;grid-template-columns:minmax(0,1fr);min-height:100%;margin:0 auto;display:grid}.app-content-skeleton-card{max-width:var(--content-width-skeleton-card);width:100%;padding:var(--surface-card-padding);background:var(--card-bg);box-shadow:var(--surface-shadow-card);box-sizing:border-box;min-height:100%;margin:0 auto}.app-content-skeleton-header{flex-direction:column;align-items:center;gap:.9rem;margin-bottom:2rem;display:flex}.app-content-skeleton-kicker{width:6.5rem;height:.85rem}.app-content-skeleton-title{border-radius:1rem;width:min(30rem,88%);height:2.6rem}.app-content-skeleton-title-secondary{width:min(18rem,62%);height:1rem}.app-content-skeleton-audio{border:1px solid var(--border-color);flex-direction:column;gap:.8rem;margin-bottom:1.75rem;padding:1rem 1.1rem;display:flex}.app-content-skeleton-audio-label{width:5rem;height:.8rem}.app-content-skeleton-audio-bar{border-radius:.9rem;width:100%;height:2.75rem}.app-content-skeleton-copy{flex-direction:column;gap:.9rem;display:flex}.app-content-skeleton-copy-secondary{margin-top:1.75rem}.app-content-skeleton-exercise-content{flex-direction:column;gap:1rem;display:flex}.app-content-skeleton-exercise-heading{justify-content:space-between;align-items:center;gap:.75rem;display:flex}.app-content-skeleton-exercise-badge{border-radius:.7rem;width:7rem;height:1rem}.app-content-skeleton-exercise-meta{border-radius:.7rem;width:4.5rem;height:.95rem}.app-content-skeleton-exercise-title{border-radius:.8rem;width:min(24rem,92%);height:1.45rem}.app-content-skeleton-exercise-panel{border:1px solid var(--border-color);flex-direction:column;gap:.8rem;padding:1rem;display:flex}.app-content-skeleton-exercise-panel-secondary{margin-top:.2rem}.app-content-skeleton-exercise-actions{flex-wrap:wrap;gap:.7rem;display:flex}.app-content-skeleton-exercise-action{border-radius:.8rem;width:min(8.5rem,48%);min-width:6.5rem;height:2.4rem}.app-content-skeleton-exercise-action-secondary{width:min(10.5rem,56%)}.app-content-skeleton-line{border-radius:.7rem;width:100%;height:1rem}.app-content-skeleton-line-short{width:72%}@keyframes skeleton-shimmer{to{transform:translate(100%)}}@media (width<=768px){.shell-view .empty-content{margin:0 auto}.app-container{height:100dvh;min-height:100dvh;position:relative;overflow:hidden}.app-main-shell{height:100dvh}.app-sidebar-backdrop{background:var(--overlay-scrim);opacity:0;pointer-events:none;transition:opacity var(--duration-base) var(--easing-standard);z-index:1100;will-change:opacity;border:0;padding:0;display:block;position:fixed;inset:0}.app-sidebar-backdrop.visible{opacity:1;pointer-events:auto}.mobile-topbar{padding:calc(.85rem + env(safe-area-inset-top,0px)) calc(1rem + env(safe-area-inset-right,0px)) .85rem calc(1rem + env(safe-area-inset-left,0px));border-bottom:1px solid var(--border-section);background:var(--mobile-topbar-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);align-items:center;gap:.7rem;display:flex}.mobile-menu-button{min-height:var(--control-size-xl);min-width:var(--control-size-xl);padding:var(--space-2-5);border:1px solid var(--border-color);background:var(--card-bg);color:var(--text-primary);font:inherit;font-weight:var(--font-weight-bold);cursor:pointer;flex:none;justify-content:center;align-items:center;display:inline-flex}.mobile-menu-button:focus-visible{outline:var(--focus-outline-width) solid var(--accent-color);outline-offset:var(--focus-outline-offset-md)}.mobile-menu-icon{flex-direction:column;gap:.24rem;display:inline-flex}.mobile-menu-icon span{background:currentColor;width:1rem;height:2px;display:block}.mobile-menu-label{display:none}.mobile-topbar-copy{flex-direction:column;flex:1;gap:.15rem;min-width:0;display:flex}.mobile-topbar-kicker,.mobile-topbar-title{margin:0}.mobile-topbar-kicker{font-size:var(--font-size-xs);font-weight:var(--font-weight-heavy);letter-spacing:var(--letter-spacing-caps);text-transform:uppercase;color:var(--text-secondary);line-height:1.1}.mobile-topbar-title{color:var(--text-primary);font-size:.95rem;font-weight:700;line-height:1.2}.mobile-topbar-actions{flex:none}.legal-view{padding:var(--space-3) var(--page-padding-mobile-x) calc(var(--page-padding-mobile-y) + var(--space-4))}.legal-view .legal-card.empty-content{margin:0 auto;padding-top:0}.app-content-skeleton-shell{padding:var(--page-padding-mobile-y) var(--page-padding-mobile-x) calc(var(--page-padding-mobile-y) + var(--space-4));gap:var(--space-5)}.app-content-skeleton-card{padding:var(--surface-card-padding-mobile)}.app-content-skeleton-header{align-items:flex-start;margin-bottom:1.4rem}.app-content-skeleton-title{width:min(18rem,100%);height:2rem}.app-content-skeleton-title-secondary{width:min(11rem,80%)}.app-content-skeleton-exercise-heading{flex-direction:column;align-items:flex-start}.app-content-skeleton-exercise-badge{width:6rem}.app-content-skeleton-exercise-meta{width:5.5rem}.app-content-skeleton-exercise-title{width:min(16rem,100%)}.app-content-skeleton-exercise-action,.app-content-skeleton-exercise-action-secondary{width:100%}}