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6px);color:var(--text);cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border:0;border-radius:8px;justify-content:center;align-items:center;margin:0;padding:0;transition:background .14s;display:inline-flex}.ex-reader-print-btn{width:var(--ex-bar-control-h);height:var(--ex-bar-control-h);color:var(--text);cursor:pointer;-webkit-tap-highlight-color:transparent;background:#ececec;border:0;border-radius:10px;justify-content:center;align-items:center;margin:0;padding:0;transition:background .14s;display:inline-flex}.ex-reader-print-btn svg{width:var(--ex-bar-icon);height:var(--ex-bar-icon);stroke-width:2.25px}.ex-reader-print-btn:hover{background:#e2e2e2}.ex-reader-print-btn:active{background:#d8d8d8}.ex-reader-text-size-btn svg{width:calc(var(--ex-bar-icon) - .2rem);height:calc(var(--ex-bar-icon) - .2rem);stroke-width:2.4px}.ex-reader-text-size-btn:hover:not(:disabled){background:#fff}.ex-reader-text-size-btn:active:not(:disabled){background:#e2e2e2}.ex-reader-text-size-btn:disabled{opacity:.32;cursor:default}.ex-reader-text-size-value{text-align:center;min-width:2.55rem;color:color-mix(in srgb, var(--text) 72%, transparent);padding-inline:4px;font-size:.76rem;font-weight:750}.ex-reader-kicker{display:none}.ex-reader-title-wrap{width:100%;min-width:0;height:var(--ex-bar-control-h);box-sizing:border-box;background:#ececec;border-radius:10px;flex:auto;align-items:center;padding:0 12px;display:flex}.ex-reader-title{max-width:100%;font-size:var(--ex-bar-title-size);letter-spacing:-.01em;white-space:nowrap;text-overflow:ellipsis;margin:0;font-weight:550;line-height:2;overflow:hidden}.ex-view-switch{height:var(--ex-bar-control-h);background:#ececec;border:0;border-radius:10px;align-items:center;padding:3px;display:inline-flex}.ex-view-btn{min-height:calc(var(--ex-bar-control-h) - 6px);color:color-mix(in srgb, var(--text) 52%, transparent);font:inherit;white-space:nowrap;cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border:0;border-radius:8px;justify-content:center;align-items:center;margin:0;padding:0 11px;font-size:.76rem;font-weight:750;line-height:1;transition:background .14s,color .14s,box-shadow .14s;display:inline-flex}.ex-view-btn:hover{color:var(--text)}.ex-view-btn:active{background:#e2e2e2}.ex-view-btn.is-active{color:var(--text);box-shadow:0 1px 2px color-mix(in srgb, var(--text) 8%, transparent);background:#fff}.ex-image-expand{z-index:210}.ex-image-expand-toolbar{top:max(14px, env(safe-area-inset-top,0px));z-index:5;direction:ltr;flex-direction:row;align-items:center;gap:8px;display:flex;position:absolute;left:auto;right:14px}.ex-image-expand-rotate{order:1;display:none}.ex-image-expand-close{order:2}.ex-image-expand-btn{color:#fff;cursor:pointer;-webkit-backdrop-filter:blur(10px);background:#141414c7;border:1px solid #242424;border-radius:10px;justify-content:center;align-items:center;width:40px;height:40px;margin:0;padding:0;display:inline-flex}.ex-image-expand-btn svg{stroke-width:2.35px;width:20px;height:20px}.ex-image-expand-btn:hover{background:#141414e0}.ex-image-expand-btn:active{background:#0a0a0aeb}.ex-image-expand-rotate.is-active{background:#0a0a0af0;border-color:#3d3d3d}.ex-image-expand-stage{z-index:1;touch-action:none;-webkit-user-select:none;user-select:none;cursor:default;justify-content:center;align-items:center;display:flex;position:absolute;inset:56px 20px 24px;overflow:visible}.ex-image-expand-frame{transform-origin:50%;will-change:transform;backface-visibility:hidden;flex:none;max-width:min(92vw,1100px);max-height:min(78vh,920px)}.ex-image-expand.is-rounded .ex-image-expand-frame{border-radius:12px;overflow:hidden}.ex-image-expand-stage.is-zoomed{cursor:grab}.ex-image-expand-stage.is-grabbing{cursor:grabbing}.ex-image-expand-img{object-fit:contain;-webkit-user-select:none;user-select:none;-webkit-user-drag:none;pointer-events:none;opacity:0;width:auto;max-width:min(92vw,1100px);height:auto;max-height:min(78vh,920px);transition:opacity .14s;display:block}.ex-image-expand.is-rounded .ex-image-expand-img{border-radius:12px}.ex-image-expand-img.is-loaded{opacity:1}.ex-image-expand-skeleton{background:linear-gradient(90deg,#ffffff14 25%,#ffffff29 50%,#ffffff14 75%) 0 0/200% 100%;border-radius:8px;width:min(72vw,420px);height:min(48vh,320px);animation:1.2s linear infinite shimmer;position:absolute}@media (aspect-ratio<=11/10){.ex-image-expand-rotate{display:inline-flex}.ex-reader-bar{--ex-bar-control-h:2.5rem;--ex-bar-pad-y:15px;--ex-bar-pad-x:12px;--ex-bar-gap:6px;--ex-bar-icon:1.1rem;--ex-bar-title-size:.95rem;z-index:25;min-height:calc(var(--ex-bar-control-h) + var(--ex-bar-pad-y) * 2);padding:var(--ex-bar-pad-y) var(--ex-bar-pad-x);padding-top:max(var(--ex-bar-pad-y), env(safe-area-inset-top,0px));background:color-mix(in srgb, var(--bg) 94%, #fff);flex-shrink:0}.qz-play-bar{z-index:25;padding-top:max(10px, env(safe-area-inset-top,0px));background:color-mix(in srgb, var(--bg) 94%, #fff);flex-shrink:0}.ex-reader-title-wrap{border-radius:12px}.ex-reader-bar-actions{gap:4px}.ex-view-btn{padding:0 9px;font-size:.72rem}.ex-reader-text-size{padding:4px}.ex-reader-text-size-btn{width:calc(var(--ex-bar-control-h) - 8px);height:calc(var(--ex-bar-control-h) - 8px)}.ex-reader-text-size-btn svg{stroke-width:2.5px}.ex-reader-text-size-value{min-width:2.85rem;font-size:.82rem;font-weight:750}.ex-reader-back,.ex-reader-toc-toggle,.ex-reader-text-size,.ex-view-switch{border-radius:12px}.ex-read:has(.ex-reader){padding-block:0;padding-right:4px}.ex-reader-read-scroll{padding:18px 18px 28px 12px}}.lessons-loading{box-sizing:border-box;justify-content:center;align-items:center;width:100%;min-height:220px;padding:48px 24px;display:flex}@media (aspect-ratio<=11/10){.ex-grid,.qz-grid{grid-template-columns:repeat(auto-fill,minmax(min(100%,168px),1fr));gap:14px}.ex-grid{padding-bottom:16px}.qz-grid{padding-bottom:20px}.ex-card{border-radius:16px;gap:8px;min-height:172px;padding:18px 18px 16px}.ex-card-kicker{font-size:.82rem}.ex-card-num{font-size:2.45rem}.ex-stars-sm .ex-star{width:1rem;height:1rem}.qz-card{border-radius:18px;gap:10px;min-height:176px;padding:18px 18px 16px}.qz-card-title{font-size:1.14rem;line-height:1.4}.qz-card-kicker,.qz-card-meta,.qz-card-score{font-size:.86rem}}.quizzes-page{flex-direction:column;flex:auto;min-height:0;display:flex}.quizzes-page .browse-hero{flex:none;padding-bottom:0}.quizzes-page .browse-heading{margin-bottom:0}.quizzes-page .lessons-welcome{flex:auto}.qz-read{flex-direction:column;min-height:0;display:flex}.qz-read:has(.qz-play){padding-block:0;padding-right:0}.qz-toolbar{flex-direction:column;flex:none;align-items:flex-start;gap:4px;padding:10px 26px 10px 24px;display:flex}.qz-toolbar-title{letter-spacing:-.02em;max-width:100%;color:var(--text);white-space:nowrap;text-overflow:ellipsis;margin:0;font-size:1.35rem;font-weight:700;line-height:1.3;overflow:hidden}.qz-toolbar-sub{color:color-mix(in srgb, var(--text) 48%, transparent);margin:0;font-size:.84rem;font-weight:500;line-height:1.4}.qz-grid{box-sizing:border-box;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;width:100%;margin:0;padding:4px 0 20px;list-style:none;display:grid}.qz-card{width:100%;min-height:148px;color:var(--text);font:inherit;text-align:start;cursor:pointer;background:#f1f1f1;border:0;border-radius:16px;flex-direction:column;align-items:stretch;gap:10px;margin:0;padding:16px 16px 14px;transition:background .15s,transform .15s;display:flex;position:relative;overflow:hidden}.qz-card:hover{background:#e8e8e8;transform:translateY(-1px)}.qz-card:active{transform:translateY(0)scale(.99)}.qz-card.is-done{background:#dfebe4}.qz-card.is-done:hover{background:#cfe0d5}.qz-card-top{justify-content:space-between;align-items:center;gap:8px;min-height:14px;display:flex}.qz-card-kicker{letter-spacing:.03em;color:color-mix(in srgb, var(--text) 45%, transparent);-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;font-size:.72rem;font-weight:700;line-height:1.35;display:-webkit-box;overflow:hidden}.qz-card-done{color:#15803d;font-size:.7rem;font-weight:700}.qz-card-title{letter-spacing:-.02em;flex:auto;margin:0;font-size:1.05rem;font-weight:700;line-height:1.35}.qz-card-foot{justify-content:space-between;align-items:center;gap:10px;margin-top:auto;display:flex}.qz-card-meta{color:color-mix(in srgb, var(--text) 48%, transparent);font-size:.78rem;font-weight:600}.qz-card-cta{color:var(--text);opacity:.72;font-size:.78rem;font-weight:700}.qz-card-score{font-variant-numeric:tabular-nums;color:#15803d;font-size:.84rem;font-weight:750}.qz-card-bar{background:color-mix(in srgb, var(--text) 8%, transparent);height:3px;position:absolute;bottom:0;left:0;right:0}.qz-card-bar-fill{background:#22c55e;height:100%;display:block}@media (aspect-ratio>=11/10){.app-shell:not(.is-mobile-nav) .ex-grid,.app-shell:not(.is-mobile-nav) .qz-grid{grid-template-columns:repeat(auto-fill,minmax(128px,1fr));gap:14px}.app-shell:not(.is-mobile-nav) .ex-card{border-radius:15px;gap:7px;min-height:158px;padding:16px 16px 14px}.app-shell:not(.is-mobile-nav) .ex-card-kicker{font-size:.78rem}.app-shell:not(.is-mobile-nav) .ex-card-num{font-size:2.2rem}.app-shell:not(.is-mobile-nav) .ex-stars-sm .ex-star{width:.92rem;height:.92rem}.app-shell:not(.is-mobile-nav) .qz-card{border-radius:16px;gap:8px;min-height:162px;padding:16px 16px 14px}.app-shell:not(.is-mobile-nav) .qz-card-title{font-size:1.06rem;line-height:1.35}.app-shell:not(.is-mobile-nav) .qz-card-kicker,.app-shell:not(.is-mobile-nav) .qz-card-meta,.app-shell:not(.is-mobile-nav) .qz-card-score{font-size:.8rem}}.qz-play{box-sizing:border-box;flex-direction:column;flex:auto;width:100%;min-height:0;display:flex}.qz-play-bar{z-index:3;border-bottom:1px solid var(--border-subtle);background:color-mix(in srgb, var(--bg) 92%, #fff);flex-wrap:wrap;flex:none;align-items:center;gap:10px 14px;min-height:52px;padding:10px 18px 12px;display:flex}.qz-play-bar-mid{flex-direction:column;flex:auto;gap:1px;min-width:0;display:flex}.qz-play-kicker{letter-spacing:.01em;color:color-mix(in srgb, var(--text) 45%, transparent);font-size:.7rem;font-weight:700;line-height:1.2}.qz-back{width:2.25rem;height:2.25rem;color:var(--text);cursor:pointer;background:0 0;border:0;border-radius:10px;flex:none;place-items:center;margin:0;padding:0;display:inline-grid}.qz-back svg{stroke-width:2.2px;width:1.25rem;height:1.25rem}.qz-back:hover{background:var(--hover)}.qz-play-title{letter-spacing:-.01em;white-space:nowrap;text-overflow:ellipsis;max-width:100%;margin:0;font-size:.95rem;font-weight:700;line-height:1.25;overflow:hidden}.qz-progress{background:#ececec;border-radius:999px;flex:100%;height:5px;overflow:hidden}.qz-progress-fill{border-radius:inherit;background:#065fd4;height:100%;transition:width .25s;display:block}.qz-play-stage{background:0 0;flex-direction:column;flex:auto;min-height:0;display:flex;position:relative}.qz-play-scroll{flex:auto;height:100%;min-height:0}.qz-play-scroll .simplebar-content{box-sizing:border-box;min-height:100%}.qz-play-body{box-sizing:border-box;flex-direction:column;gap:14px;width:100%;max-width:40rem;min-height:100%;margin:0 auto;padding:20px 22px 36px;display:flex}.qz-question{box-shadow:none;background:#f1f1f1;border-radius:14px;padding:18px 18px 16px}.qz-q-prompt{font-size:1.05rem;font-weight:650;line-height:1.65}.qz-choices{flex-direction:column;gap:8px;display:flex}.qz-choice{width:100%;color:var(--text);font:inherit;text-align:start;cursor:pointer;box-shadow:none;background:#f1f1f1;border:0;border-radius:14px;align-items:flex-start;gap:12px;margin:0;padding:14px 16px;transition:background .15s,transform .12s;display:flex}.qz-choice:hover:not(:disabled){background:#e8e8e8}.qz-choice:disabled{cursor:default}.qz-choice.is-selected{background:color-mix(in srgb, var(--text) 8%, #f1f1f1)}.qz-choice.is-correct{background:#d4ebdc}.qz-choice.is-wrong{background:#f1dcdc}.qz-choice-badge{background:color-mix(in srgb, var(--text) 10%, #fff);width:1.7rem;height:1.7rem;color:color-mix(in srgb, var(--text) 72%, transparent);box-sizing:border-box;border-radius:.45rem;flex:none;place-items:center;margin-top:1px;display:inline-grid}.qz-choice-badge.is-selected{background:color-mix(in srgb, var(--text) 18%, #fff);color:var(--text)}.qz-choice-badge.is-correct{color:#fff;background:#22c55e}.qz-choice-badge.is-wrong{color:#fff;background:#ef4444}.qz-choice-badge-letter{font-size:.78rem;font-weight:750;line-height:1}.qz-choice-badge-icon{stroke-width:2.8px;width:1rem;height:1rem}.qz-choice-text{flex:auto;min-width:0;font-size:.98rem;font-weight:550;line-height:1.55}.qz-explain{box-shadow:none;color:var(--text);background:#e4edfa;border-radius:14px;flex-direction:column;gap:8px;padding:16px 18px;font-size:.95rem;line-height:1.6;display:flex}.qz-explain-label{letter-spacing:-.02em;color:#1a4480;font-size:1.05rem;font-weight:750;line-height:1.25}.qz-play-foot{justify-content:stretch;margin-top:auto;padding-top:6px;display:flex}.qz-hint{text-align:center;width:100%;color:color-mix(in srgb, var(--text) 45%, transparent);background:0 0;border-radius:12px;margin:0;padding:12px;font-size:.88rem;font-weight:550}.qz-btn{color:var(--text);font:inherit;cursor:pointer;box-shadow:none;background:#f1f1f1;border:0;border-radius:12px;justify-content:center;align-items:center;gap:8px;margin:0;padding:12px 18px;font-size:.95rem;font-weight:700;display:inline-flex}.qz-btn svg{stroke-width:2.3px;width:16px;height:16px}.qz-btn:hover{background:#e8e8e8}.qz-btn.is-primary{color:#fff;background:#065fd4}.qz-btn.is-primary:hover{opacity:1;background:#0556bf}.qz-btn.is-wide{width:100%}.qz-results{box-sizing:border-box;text-align:center;flex-direction:column;flex:auto;justify-content:center;align-items:stretch;gap:28px;width:100%;max-width:28rem;min-height:0;margin:0 auto;padding:28px 20px 24px;display:flex}.qz-results-main{flex-direction:column;align-items:center;gap:8px;display:flex}.qz-results-kicker{color:var(--muted);margin:0;font-size:.82rem;font-weight:650}.qz-results-score{font-variant-numeric:tabular-nums;justify-content:center;align-items:baseline;gap:6px;margin:4px 0 0;line-height:1;display:inline-flex}.qz-results-num{letter-spacing:-.04em;color:var(--text);font-size:clamp(2.6rem,10vw,3.4rem);font-weight:800}.qz-results-sep,.qz-results-den{color:var(--muted);font-size:clamp(1.25rem,4.5vw,1.55rem);font-weight:700}.qz-results-pct{color:var(--muted);margin:4px 0 0;font-size:.98rem;font-weight:600}.qz-results-actions{flex-direction:column;gap:10px;width:100%;display:flex}.qz-results-actions .qz-btn{width:100%;min-height:3rem;padding:14px 16px}@media (aspect-ratio>=11/10){.qz-results{justify-content:center;gap:32px;padding:40px 24px 32px}.qz-results-actions{flex-flow:wrap;justify-content:center}.qz-results-actions .qz-btn{flex:auto;width:auto;min-width:10.5rem}}@media (aspect-ratio<=11/10){.qz-toolbar{padding-inline:16px}.qz-play-bar{padding:8px 12px 10px}.qz-play-body{padding:14px 12px 12px}.qz-question{padding:16px}.qz-q-prompt{font-size:1rem}.qz-choice{padding:13px 14px}.qz-choice-text{font-size:.95rem}.qz-results{padding:20px 16px max(20px, env(safe-area-inset-bottom,0px));justify-content:space-between;gap:26px}.qz-results-main{flex:auto;justify-content:center;gap:12px;padding-block:16px}.qz-results-kicker{font-size:.92rem}.qz-results-num{font-size:clamp(3.1rem,14vw,3.8rem)}.qz-results-sep,.qz-results-den{font-size:clamp(1.45rem,5.5vw,1.75rem)}.qz-results-pct{font-size:1.08rem}.qz-results-actions{flex:none;gap:10px;padding-top:4px}.qz-results-actions .qz-btn{min-height:3.25rem;padding:15px 16px;font-size:1rem}}.summaries-page{flex-direction:column;flex:auto;min-height:0;display:flex}.summaries-page .browse-hero{flex:none;padding-bottom:0}.summaries-page .browse-heading{margin-bottom:0}.summaries-page .lessons-welcome{flex:auto}.sm-read{flex-direction:column;min-height:0;display:flex}.sm-toolbar{flex-direction:column;flex:none;align-items:flex-start;gap:4px;padding:10px 26px 10px 24px;display:flex}.sm-toolbar-title{letter-spacing:-.02em;max-width:100%;color:var(--text);white-space:nowrap;text-overflow:ellipsis;margin:0;font-size:1.35rem;font-weight:700;line-height:1.3;overflow:hidden}.sm-grid{box-sizing:border-box;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:14px;width:100%;margin:0;padding:4px 0 20px;list-style:none;display:grid}.sm-filter-row{box-sizing:border-box;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:14px;width:100%;padding:4px 0 14px;display:grid}.sm-filter-row .sm-module-filter{flex:none;width:100%;min-width:0;max-width:none}.sm-filter-row+.sm-grid{padding-top:0}.sm-module-filter .select-filter-trigger{width:100%}.sm-module-filter .select-filter-value{font-size:.85rem}.sm-module-menu .select-filter-option,.sm-module-menu .select-filter-option span{font-size:.82rem}.sm-card-desc{-webkit-line-clamp:4;line-clamp:4;max-height:6em}.sm-card{width:100%;min-height:148px;color:var(--text);font:inherit;text-align:start;cursor:pointer;background:#f1f1f1;border:0;border-radius:16px;flex-direction:column;align-items:stretch;gap:10px;margin:0;padding:16px 16px 14px;transition:background .15s,transform .15s;display:flex}.sm-card:hover{background:#e8e8e8;transform:translateY(-1px)}.sm-card:active{transform:translateY(0)scale(.99)}.sm-card-top{justify-content:space-between;align-items:center;gap:8px;min-width:0;display:flex}.sm-card-kicker{letter-spacing:.03em;color:color-mix(in srgb, var(--text) 45%, transparent);white-space:nowrap;text-overflow:ellipsis;flex:auto;min-width:0;font-size:.72rem;font-weight:700;line-height:1.35;overflow:hidden}.sm-card-title{letter-spacing:-.02em;margin:0;font-size:1.05rem;font-weight:700;line-height:1.35}.sm-card-desc{color:color-mix(in srgb, var(--text) 52%, transparent);-webkit-line-clamp:3;line-clamp:3;text-overflow:ellipsis;-webkit-box-orient:vertical;flex:0 auto;max-height:4.5em;margin:0;font-size:.74rem;font-weight:500;line-height:1.5;display:-webkit-box;overflow:hidden}.sm-card-foot{justify-content:flex-start;align-items:center;gap:10px;margin-top:auto;display:flex}.sm-card-meta{color:color-mix(in srgb, var(--text) 42%, transparent);flex:none;font-size:.76rem;font-weight:650}@media (aspect-ratio<=11/10){.sm-grid{grid-template-columns:1fr}.sm-toolbar{padding-inline:16px}}.lessons-read-scale{--read-size-multiplier:1;min-width:0;width:min(100%, calc(var(--read-column-width) * var(--read-size-multiplier,1) + 1.5rem));max-width:calc(var(--read-column-width) * var(--read-size-multiplier,1) + 1.5rem);box-sizing:border-box;font-family:Zain,Segoe UI,Tahoma,sans-serif;font-size:calc(var(--read-base-size) * 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0;border:0;border-radius:8px;flex:none;margin:0;padding:0;font-size:1.1rem;line-height:1}.browse-search-clear:hover{color:var(--text);background:var(--hover)}.select-filter{z-index:5;flex:160px;width:auto;min-width:140px;max-width:280px;margin-top:0;position:relative}.select-filter.is-open{z-index:20}.select-filter-type{flex:none;width:auto;min-width:0;max-width:none}.select-filter-type .select-filter-trigger{width:auto;min-width:9.5rem}.select-filter-type .select-filter-menu{width:max(100%,14rem);min-width:14rem}.select-filter-module{flex:auto;min-width:0;max-width:none}.select-filter-module .select-filter-trigger{width:100%}.select-filter-trigger{background:var(--control);width:100%;color:var(--text);cursor:pointer;font:inherit;text-align:start;border:0;border-radius:10px;justify-content:space-between;align-items:center;gap:10px;margin:0;padding:9px 12px;transition:background .15s;display:flex}.select-filter-trigger:hover,.select-filter.is-open .select-filter-trigger{background:var(--control-hover)}.select-filter-trigger.has-value{background:var(--control)}.select-filter-trigger.has-value:hover,.select-filter.is-open .select-filter-trigger.has-value{background:var(--control-hover)}.select-filter-value{white-space:nowrap;text-overflow:ellipsis;align-items:center;gap:7px;min-width:0;font-size:.9rem;font-weight:600;line-height:1.25;display:inline-flex;overflow:hidden}.select-filter-value-icon,.select-filter-option-icon{stroke-width:2.25px;flex:none;width:15px;height:15px}.select-filter-chevron{fill:none;width:16px;height:16px;stroke:var(--muted);stroke-width:2.2px;stroke-linecap:round;stroke-linejoin:round;flex:none;transition:transform .15s}.select-filter.is-open .select-filter-chevron{transform:rotate(180deg)}.select-filter-menu{inset-inline-start:0;background:var(--elevated);width:min(100vw - 40px,380px);max-width:100%;box-shadow:var(--elevated-shadow);border:0;border-radius:14px;position:absolute;top:calc(100% + 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12px;font-size:.86rem}.filter-sheet-portal{z-index:60;flex-direction:column;justify-content:flex-end;display:flex;position:fixed;inset:0}.video-history-portal{z-index:70;flex-direction:column;justify-content:flex-end;display:flex;position:fixed;inset:0}.video-history-backdrop{cursor:pointer;background:#0000006b;border:0;margin:0;padding:0;position:absolute;inset:0}.video-history-sheet{z-index:1;background:var(--elevated,var(--bg));max-height:min(78vh,640px);box-shadow:var(--elevated-shadow,0 -8px 32px #0000002e);padding-bottom:env(safe-area-inset-bottom,0px);border-radius:18px 18px 0 0;flex-direction:column;animation:.24s cubic-bezier(.4,0,.2,1) filter-sheet-in;display:flex;position:relative}.video-history-head{border-bottom:1px solid var(--border-subtle);justify-content:space-between;align-items:center;gap:12px;padding:14px 16px 10px;display:flex}.video-history-head-title{align-items:center;gap:8px;min-width:0;display:inline-flex}.video-history-head-title svg{width:1.15rem;height:1.15rem;color:var(--muted);stroke-width:2.2px}.video-history-head-title h2{letter-spacing:-.02em;margin:0;font-size:1.05rem;font-weight:750}.video-history-close{background:var(--control);width:2.25rem;height:2.25rem;color:var(--muted);cursor:pointer;border:0;border-radius:10px;justify-content:center;align-items:center;margin:0;padding:0;display:inline-flex}.video-history-close svg{stroke-width:2.2px;width:1.1rem;height:1.1rem}.video-history-close:hover{background:var(--hover-strong);color:var(--text)}.video-history-body{flex:auto;min-height:0;max-height:min(62vh,520px)}.video-history-body .simplebar-offset{inset:0!important}.video-history-body.simplebar-scrollable-y .simplebar-offset{inset:0 0 0 10px!important}.video-history-body .simplebar-track.simplebar-vertical{inset-inline:auto;width:8px;left:0;right:auto}.video-history-body .simplebar-track.simplebar-horizontal{display:none}.video-history-body .simplebar-content{padding:8px 10px 16px}.video-history-list{flex-direction:column;gap:4px;display:flex}.video-history-row{width:100%;color:var(--text);text-align:start;cursor:pointer;font:inherit;background:0 0;border:0;border-radius:12px;align-items:center;gap:12px;margin:0;padding:8px;display:flex}.video-history-row:hover{background:var(--hover)}.video-history-thumb{aspect-ratio:16/9;background:color-mix(in srgb, var(--text) 8%, var(--bg));isolation:isolate;border-radius:10px;flex:none;width:7.5rem;position:relative;overflow:hidden}.video-history-thumb img{object-fit:cover;z-index:0;width:100%;height:100%;display:block;position:relative}.video-history-progress{z-index:2;pointer-events:none;background:#ffffff59;height:4px;position:absolute;bottom:0;left:0;right:0}.video-history-progress>span{background:#e53935;width:0;height:100%;display:block}.video-history-copy{flex-direction:column;flex:auto;gap:4px;min-width:0;display:flex}.video-history-title{-webkit-line-clamp:2;line-clamp:2;word-break:break-word;-webkit-box-orient:vertical;font-size:.9rem;font-weight:700;line-height:1.35;display:-webkit-box;overflow:hidden}.video-history-meta{min-width:0;color:var(--muted);flex-wrap:wrap;align-items:center;gap:6px 10px;font-size:.75rem;font-weight:600;display:flex}.video-history-channel{text-overflow:ellipsis;white-space:nowrap;min-width:0;max-width:100%;overflow:hidden}.video-history-watched{white-space:nowrap;flex:none}.video-history-empty{color:var(--muted);text-align:center;margin:0;padding:28px 12px;font-size:.9rem;font-weight:600}@media (aspect-ratio<=10/11),(width<=720px){.video-history-watched{display:none}.video-history-thumb{width:6.75rem}.video-history-progress{height:4px}}@media (aspect-ratio>=11/10){.video-history-portal{justify-content:center;align-items:center;padding:24px}.video-history-sheet{border-radius:18px;width:min(520px,100%);max-height:min(72vh,640px)}}@keyframes premium-modal-backdrop-in{0%{opacity:0}to{opacity:1}}@keyframes premium-modal-in{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}.premium-modal-portal{z-index:80;--premium-ink:#1a4480;--premium-accent:#065fd4;--premium-wash:#ebf1fd;flex-direction:column;justify-content:flex-end;display:flex;position:fixed;inset:0}.premium-modal-backdrop{cursor:pointer;background:#0f172a73;border:0;margin:0;padding:0;animation:.24s both premium-modal-backdrop-in;position:absolute;inset:0}.premium-modal{z-index:1;width:100%;max-height:min(90vh,680px);color:var(--premium-ink);padding-bottom:env(safe-area-inset-bottom,0px);background:#fff;border-radius:20px 20px 0 0;flex-direction:column;margin:0;animation:.32s cubic-bezier(.22,1,.36,1) both premium-modal-in;display:flex;position:relative;overflow:hidden}.premium-modal-head{isolation:isolate;z-index:2;text-align:center;background:radial-gradient(80% 70% at 70% 20%,#5b9cff47,#0000 60%),radial-gradient(70% 60% at 15% 85%,#20c4a538,#0000 55%),linear-gradient(160deg,#071a2e 0%,#0b2742 28%,#123a63 62%,#1a4480 100%);border-bottom:0;flex:none;justify-content:center;align-items:center;min-height:156px;padding:36px 20px 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16px;display:flex}.premium-modal-cta{background:var(--premium-accent);color:#fff;width:100%;min-height:3.1rem;font:inherit;cursor:pointer;border:0;border-radius:12px;justify-content:center;align-items:center;margin:0;padding:14px 18px;font-size:1rem;font-weight:750;display:inline-flex}.premium-modal-cta:hover{background:#0556bf}.premium-modal-cta:active{transform:scale(.985)}.premium-modal-dismiss{width:100%;min-height:2.4rem;color:var(--muted);font:inherit;cursor:pointer;background:0 0;border:0;border-radius:10px;justify-content:center;align-items:center;margin:0;padding:8px 12px;font-size:.88rem;font-weight:650;display:inline-flex}.premium-modal-dismiss:hover{color:var(--text)}.premium-modal-back{top:14px;z-index:2;color:#fff;cursor:pointer;background:#ffffff24;border:0;border-radius:999px;justify-content:center;align-items:center;width:2.25rem;height:2.25rem;margin:0;padding:0;display:inline-flex;position:absolute;inset-inline-start:12px}.premium-modal-back:hover{background:#ffffff38}.premium-modal-back svg{width:1.15rem;height:1.15rem}.premium-modal-logo-ar.is-plans{letter-spacing:-.04em;font-size:clamp(2.4rem,9vw,3.05rem);font-weight:500}.premium-modal-logo-latin.is-plans{letter-spacing:0;text-transform:none;color:#fff;font-family:IBM Plex Sans Arabic,Zain,sans-serif;font-size:clamp(1.05rem,3.6vw,1.35rem);font-weight:200}.premium-modal.is-plans .premium-modal-head{min-height:156px;padding:36px 20px 34px}.premium-plan-list{flex-direction:column;gap:10px;padding:14px 16px 28px;display:flex}.premium-plan-card{background:color-mix(in srgb, var(--text) 5.5%, #fff);width:100%;color:var(--text);text-align:start;cursor:pointer;font:inherit;border:0;border-radius:14px;flex-direction:column;align-items:flex-start;gap:0;margin:0;padding:16px 14px;transition:background .15s;display:flex;position:relative}.premium-plan-card.is-active{background:var(--premium-wash,#ebf1fd)}.premium-plan-top{align-items:center;gap:10px;width:100%;display:flex}.premium-plan-copy{flex-direction:column;flex:auto;align-items:flex-start;gap:2px;min-width:0;display:flex}.premium-plan-title{color:var(--text);font-size:.95rem;font-weight:750;line-height:1.25}.premium-plan-card.is-active .premium-plan-title{color:var(--premium-ink)}.premium-plan-note{color:var(--muted);font-size:.75rem;font-weight:550;line-height:1.3}.premium-plan-check{color:#0000;background:color-mix(in srgb, var(--text) 10%, #fff);border:0;border-radius:999px;flex:none;justify-content:center;align-items:center;width:1.25rem;height:1.25rem;display:inline-flex}.premium-plan-check svg{stroke-width:3px;width:.75rem;height:.75rem}.premium-plan-card.is-active .premium-plan-check{background:var(--premium-accent);color:#fff}.premium-plan-price{flex:none;align-items:baseline;gap:.28em;margin:0;display:inline-flex}.premium-plan-amount{letter-spacing:-.03em;color:var(--text);font-variant-numeric:tabular-nums;font-size:1.15rem;font-weight:800}.premium-plan-unit{color:var(--muted);font-size:.78rem;font-weight:650}.premium-modal-foot-hint{text-align:center;color:var(--muted);margin:0 0 2px;font-size:.8rem;font-weight:600}.premium-contact-row{grid-template-columns:1fr 1fr;gap:8px;display:grid}.premium-contact-btn{color:#fff;min-height:3rem;font:inherit;cursor:pointer;border:0;border-radius:12px;justify-content:center;align-items:center;gap:.45rem;margin:0;padding:12px 14px;font-size:.95rem;font-weight:750;display:inline-flex}.premium-contact-btn svg{flex-shrink:0;width:1.15rem;height:1.15rem;translate:0 -.08em}.premium-contact-btn.is-whatsapp{background:#128c7e}.premium-contact-btn.is-whatsapp:hover{background:#0f7a6e}.premium-contact-btn.is-telegram{background:#229ed9}.premium-contact-btn.is-telegram:hover{background:#1b8fc6}.premium-contact-btn:active{transform:scale(.985)}@media (aspect-ratio>=11/10){.premium-modal-portal{justify-content:center;align-items:center;padding:28px}.premium-modal{border-radius:18px;width:min(420px,100%);max-height:min(86vh,640px);box-shadow:0 24px 56px #0f172a38}.premium-modal-head,.premium-modal.is-plans .premium-modal-head{min-height:118px;padding:24px 20px 22px}.premium-modal-logo-ar,.premium-modal-logo-ar.is-plans{font-size:2.2rem}.premium-modal-logo-latin,.premium-modal-logo-latin.is-plans{font-size:.95rem}.premium-plan-list{padding:14px 18px 28px}.premium-modal-list{padding:10px 18px 6px}.premium-modal-foot{padding:12px 18px 18px}}.filter-sheet-backdrop{cursor:pointer;background:#0000006b;border:0;margin:0;padding:0;position:absolute;inset:0}.filter-sheet{z-index:1;--filter-sheet-inset:16px;background:var(--elevated);max-height:min(78vh,640px);box-shadow:var(--elevated-shadow);padding-bottom:env(safe-area-inset-bottom,0px);border-radius:18px 18px 0 0;flex-direction:column;animation:.24s cubic-bezier(.4,0,.2,1) filter-sheet-in;display:flex;position:relative}@keyframes filter-sheet-in{0%{transform:translateY(100%)}to{transform:translate(0,0)}}.filter-sheet-head{padding:16px var(--filter-sheet-inset) 12px;border-bottom:1px solid var(--border-subtle);flex:none;justify-content:space-between;align-items:center;gap:12px;display:flex}.filter-sheet-title{margin:0;font-size:1.05rem;font-weight:750;line-height:1.25}.filter-sheet-close{background:var(--control);width:2.25rem;height:2.25rem;color:var(--text);cursor:pointer;border:0;border-radius:10px;flex:none;place-items:center;margin:0;padding:0;display:inline-grid}.filter-sheet-close:active{background:var(--control-hover)}.filter-sheet-search{padding-inline:var(--filter-sheet-inset);flex:none}.filter-sheet-list{min-height:8rem;padding-inline:var(--filter-sheet-inset);box-sizing:border-box;flex:auto;margin-top:.5rem}.filter-sheet-list .simplebar-offset{inset:0!important}.filter-sheet-list.simplebar-scrollable-y .simplebar-offset{inset:0 5px!important}.filter-sheet-list .simplebar-track.simplebar-vertical{inset-inline:auto;left:-4 px;width:8px;right:auto}.filter-sheet-list .simplebar-content{box-sizing:border-box;flex-direction:column;gap:4px;padding:0 0 16px;display:flex}.filter-sheet-option{width:100%;max-width:100%;color:var(--text);cursor:pointer;font:inherit;text-align:start;box-sizing:border-box;background:0 0;border:0;border-radius:12px;justify-content:space-between;align-items:center;gap:12px;margin:0;padding:14px .5rem;font-size:1.05rem;font-weight:650;line-height:1.4;display:flex}.filter-sheet-option:hover{background:var(--hover)}.filter-sheet-option.is-active{background:color-mix(in srgb, var(--link) 10%, var(--control))}.filter-sheet-option-main{flex:auto;align-items:center;gap:8px;min-width:0;display:inline-flex}.filter-sheet-option-label{white-space:nowrap;text-overflow:ellipsis;min-width:0;overflow:hidden}.filter-sheet-list .select-filter-empty{padding:18px .5rem;font-size:.94rem}.filter-sheet-option .select-filter-option-icon,.filter-sheet-option .select-filter-check{flex:none}.filter-sheet.is-subject .filter-sheet-option-main{gap:10px}.filter-sheet.is-subject .filter-sheet-option .select-filter-option-icon{width:1.35rem;height:1.35rem;color:var(--sf-accent,var(--text));box-sizing:border-box;background:0 0;border-radius:0;padding:0}.filter-sheet.is-subject .filter-sheet-option.is-active{background:linear-gradient(90deg, color-mix(in srgb, var(--sf-accent,var(--text)) 18%, var(--control)), color-mix(in srgb, var(--sf-accent,var(--text)) 10%, var(--control)));color:var(--text);font-weight:600}.filter-sheet.is-subject .filter-sheet-option.is-active .select-filter-option-icon{color:var(--sf-accent,var(--text))}.filter-sheet.is-subject .filter-sheet-option.is-active .select-filter-check{stroke:var(--sf-accent,var(--text))}.select-filter.select-filter-subject{z-index:40;flex:none;width:auto;min-width:0;max-width:min(100%,17rem)}.select-filter.select-filter-subject.is-open{z-index:50}.select-filter-subject .select-filter-trigger{background:var(--control);width:auto;min-width:0;max-width:100%;height:auto;min-height:2rem;box-shadow:none;border:0;border-radius:10px;gap:8px;padding:7px 11px}.select-filter-subject .select-filter-trigger.has-value{background:var(--control)}.select-filter-subject .select-filter-trigger:hover,.select-filter-subject.is-open .select-filter-trigger,.select-filter-subject .select-filter-trigger.has-value:hover,.select-filter-subject.is-open .select-filter-trigger.has-value{background:var(--control-hover)}.select-filter-subject .select-filter-value{color:color-mix(in srgb, var(--text) 62%, transparent);font-size:1.05rem;font-weight:650;line-height:1}.select-filter-subject .select-filter-trigger.has-value .select-filter-value,.select-filter-subject .select-filter-trigger:hover .select-filter-value,.select-filter-subject.is-open .select-filter-value{color:var(--text)}.select-filter-subject .select-filter-value-icon,.select-filter-subject .select-filter-option-icon{color:var(--sf-accent,var(--text));box-sizing:border-box}.select-filter-subject .select-filter-value-icon{opacity:1;background:0 0;border-radius:0;width:1em;height:1em;padding:0}.select-filter-subject .select-filter-option-icon{background:0 0;border-radius:0;flex:none;width:1.25rem;height:1.25rem;padding:0}.select-filter-subject .select-filter-chevron{opacity:.45;width:13px;height:13px}.select-filter-subject .select-filter-trigger:hover .select-filter-chevron,.select-filter-subject.is-open .select-filter-chevron{opacity:.75}.select-filter-subject .select-filter-menu{inset-inline:0 auto;border:1px solid var(--border-subtle);background:var(--elevated);width:17.5rem;min-width:17.5rem;max-width:min(17.5rem,100vw - 24px);box-shadow:0 4px 8px #0000000a, var(--elevated-shadow);box-sizing:border-box;border-radius:14px;padding:2px;top:calc(100% + 6px);overflow:hidden}.select-filter-subject .select-filter-search{border-bottom:1px solid var(--border-subtle);padding:10px 12px 8px}.select-filter-subject .select-filter-list{max-height:min(340px,52vh)}.select-filter-subject .select-filter-option{border-radius:10px;gap:12px;padding:8px 10px;font-size:.9rem;font-weight:500}.select-filter-subject .select-filter-option-main{gap:10px}.select-filter-subject .select-filter-option:hover{background:var(--hover);color:var(--text)}.select-filter-subject .select-filter-option.active{background:linear-gradient(90deg, color-mix(in srgb, var(--sf-accent,var(--text)) 18%, var(--control)), color-mix(in srgb, var(--sf-accent,var(--text)) 10%, var(--control)));color:var(--text);font-weight:600}.select-filter-subject .select-filter-option.active .select-filter-option-icon{color:var(--sf-accent,var(--text))}.select-filter-subject .select-filter-check{width:15px;height:15px;stroke:var(--sf-accent,var(--text))}.channel-tile{width:90px;color:var(--muted);cursor:pointer;font:inherit;background:0 0;border:0;flex-direction:column;flex:none;align-items:center;gap:12px;padding:4px;transition:color .15s,transform .15s;display:flex}.channel-tile:hover{color:var(--text);transform:translateY(-1px)}.channel-tile-avatar,.channel-tile-all{object-fit:cover;background:var(--thumb-bg);width:56px;height:56px;box-shadow:0 0 0 1px var(--border-subtle);border-radius:50%}.channel-tile-all{color:var(--option);background:linear-gradient(145deg, var(--avatar-all-from), var(--avatar-all-to));place-items:center;font-size:.82rem;font-weight:700;display:grid}.channel-tile.active{color:var(--text)}.channel-tile.active .channel-tile-avatar,.channel-tile.active .channel-tile-all{border:1px solid #000}.channel-tile-name{text-align:center;white-space:nowrap;text-overflow:ellipsis;max-width:100%;font-size:.7rem;font-weight:600;line-height:1.25;overflow:hidden}.content{padding:8px 20px 40px}.feed-error{color:#b42318;margin:0 0 14px;font-size:.9rem}.feed-pager{border-top:1px solid var(--border-subtle);flex-direction:column;align-items:center;gap:14px;margin-top:36px;padding:22px 18px 8px;display:flex}.feed-pager-controls{flex-wrap:wrap;justify-content:center;align-items:center;gap:8px 10px;display:flex}.feed-pager-nav{border:1px solid var(--border-subtle);background:var(--control);color:var(--text);cursor:pointer;font:inherit;border-radius:10px;align-items:center;gap:4px;margin:0;padding:8px 12px;font-size:.88rem;font-weight:600;line-height:1;transition:background .15s,border-color .15s;display:inline-flex}.feed-pager-nav:hover:not(:disabled){background:var(--control-hover);border-color:var(--border)}.feed-pager-nav:disabled{opacity:.35;cursor:default}.feed-pager-nav-icon{stroke-width:2.25px;flex:none;width:16px;height:16px}.feed-pager-pages{flex-wrap:wrap;justify-content:center;align-items:center;gap:4px;display:inline-flex}.feed-pager-page-wrap{align-items:center;gap:4px;display:inline-flex}.feed-pager-page{min-width:2.15rem;height:2.15rem;color:var(--muted);cursor:pointer;font:inherit;background:0 0;border:0;border-radius:10px;margin:0;padding:0 8px;font-size:.9rem;font-weight:600;line-height:1;transition:background .12s,color .12s}.feed-pager-page:hover{background:var(--hover);color:var(--text)}.feed-pager-page.is-active{background:var(--chip-active);color:var(--chip-active-text)}.feed-pager-ellipsis{min-width:1.1rem;color:var(--muted);text-align:center;-webkit-user-select:none;user-select:none;font-size:.95rem}.feed-pager-fallback{color:var(--muted);padding:0 6px;font-size:.9rem;font-weight:600}.status-row{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;display:flex}.status{color:var(--muted);font-size:.9rem}.pager{align-items:center;gap:10px;display:flex}.pager.bottom{justify-content:center;margin-top:28px}.pager-btn{border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;border-radius:8px;padding:8px 14px}.pager-btn:disabled{opacity:.4;cursor:default}.pager-label{color:var(--muted);text-align:center;min-width:7rem;font-size:.9rem}.empty{color:var(--muted);text-align:center;padding:48px 0}.video-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));align-items:start;gap:28px 18px;display:grid}.video-grid.is-loading{opacity:.55;transition:opacity .15s}.skeleton-card{aspect-ratio:16/12.2;background:linear-gradient(90deg, var(--skeleton-a) 25%, var(--skeleton-b) 50%, var(--skeleton-a) 75%);background-size:200% 100%;border-radius:12px;animation:1.2s linear infinite shimmer}@keyframes shimmer{to{background-position:-200% 0}}.video-card{width:100%;min-height:100%;color:inherit;text-align:start;cursor:pointer;font:inherit;background:0 0;border:0;flex-direction:column;margin:0;padding:0;display:flex}.video-card:hover .video-title{color:var(--text)}.watch-page{max-width:1280px;margin:0 auto;padding:12px 24px 40px}.app:has(>.watch-page)>.browse-hero{padding-bottom:0}.app:has(>.watch-page)>.browse-hero .browse-heading{margin-bottom:0;padding-bottom:12px}.app-shell:not(.is-mobile-nav) .watch-page{direction:ltr;grid-template-columns:minmax(0,1fr);align-items:start;gap:16px 24px;max-width:1600px;padding-top:8px;display:grid}.app-shell:not(.is-mobile-nav) .watch-primary,.app-shell:not(.is-mobile-nav) .watch-related{direction:rtl}.app-shell:not(.is-mobile-nav) .watch-related{width:100%;min-width:0;max-width:none;margin-top:8px;position:static}.app-shell:not(.is-mobile-nav) .related-list{flex-direction:column;gap:12px;margin-top:2px;display:flex}.app-shell:not(.is-mobile-nav) .related-card{text-align:start;direction:rtl;flex-direction:row;flex:none;align-items:flex-start;gap:10px;width:100%;max-width:100%}.app-shell:not(.is-mobile-nav) .related-card-media{border-radius:10px;flex:0 0 42%;width:42%;max-width:168px}.app-shell:not(.is-mobile-nav) .related-card-body{text-align:start;direction:rtl;flex:auto;min-width:0;padding-top:1px}.app-shell:not(.is-mobile-nav) .related-title{-webkit-line-clamp:3;line-clamp:3;font-size:.84rem;font-weight:650}.app-shell:not(.is-mobile-nav) .related-channel,.app-shell:not(.is-mobile-nav) .related-date{font-size:.74rem}.app-shell:not(.is-mobile-nav) .related-card:hover .related-card-img,.app-shell:not(.is-mobile-nav) .related-card:focus-visible .related-card-img{transform:none}@media (width>=1001px){.app-shell:not(.is-mobile-nav) .watch-page{grid-template-columns:minmax(0,1fr) clamp(260px,28vw,400px)}.app-shell:not(.is-mobile-nav) .watch-related{margin-top:0;position:sticky;top:12px}.app-shell:not(.is-mobile-nav) .related-list{gap:10px;margin-top:0}.app-shell:not(.is-mobile-nav) .related-card{direction:ltr;gap:8px}.app-shell:not(.is-mobile-nav) .related-card-media{flex:0 0 clamp(120px,14vw,200px);width:clamp(120px,14vw,200px);max-width:48%}.app-shell:not(.is-mobile-nav) .related-channel,.app-shell:not(.is-mobile-nav) .related-date{font-size:.72rem}}.watch-primary{width:100%}.player-frame{aspect-ratio:16/9;background:#000;border-radius:12px;position:relative;overflow:hidden}.player-frame iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.yt-player{flex-direction:column;gap:0;width:100%;display:flex}.yt-player-frame{aspect-ratio:16/9;background:#0a0a0a;border-radius:12px;position:relative;overflow:hidden}.yt-player.is-fullscreen,.yt-player.is-fullscreen .yt-player-frame{border-radius:0}.yt-player.is-fullscreen{background:#000;width:100%;height:100%}.yt-player.is-fullscreen.is-fs-rotate{transform-origin:50%;width:100dvh;max-width:none;height:100dvw;max-height:none;position:fixed;inset:50% auto auto 50%;transform:translate(-50%,-50%)rotate(90deg)}.yt-player.is-fullscreen .yt-player-frame{aspect-ratio:auto;flex:auto;width:100%;height:auto;min-height:0}.yt-player-host,.yt-player-frame iframe{pointer-events:none;border:0;width:100%;height:100%;position:absolute;inset:0}.yt-player-hit{z-index:2;cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border:0;margin:0;padding:0;position:absolute;inset:0}.yt-player-bar{--yt-ctrl-size:1.45rem;--yt-ctrl-gap:10px;opacity:0;pointer-events:none;flex-direction:column;align-items:stretch;gap:2px;max-height:0;margin-top:0;padding:0 2px;transition:max-height .24s,opacity .2s,margin-top .24s,padding .24s,transform .2s;display:flex;overflow:hidden;transform:translateY(-4px)}.yt-player.is-controls .yt-player-bar{opacity:1;pointer-events:auto;max-height:64px;margin-top:10px;padding:0 2px;overflow:visible;transform:translateY(0)}.yt-player.is-fullscreen.is-controls .yt-player-bar{background:#0a0a0a;margin-top:0;padding:8px 12px 12px}.yt-player-scrub{touch-action:none;cursor:pointer;outline:none;align-items:center;min-width:0;height:18px;display:flex;position:relative;overflow:visible}.yt-player-track,.yt-player-fill{inset-inline:0;border-radius:999px;height:4px;position:absolute;top:50%;transform:translateY(-50%)}.yt-player-track{background:#ececec}.yt-player.is-fullscreen .yt-player-track{background:#ffffff47}.yt-player-fill{transform-origin:0;background:var(--text);transform:translateY(-50%) scaleX(var(--yt-progress,0));will-change:transform}.yt-player.is-fullscreen .yt-player-fill,.yt-player.is-fullscreen .yt-player-thumb{background:#fff}.yt-player.is-fullscreen .yt-player-thumb{box-shadow:none}.yt-player-thumb{--yt-thumb-size:12px;z-index:3;width:var(--yt-thumb-size);height:var(--yt-thumb-size);background:var(--text);top:50%;transform-origin:50%;box-shadow:none;opacity:.88;pointer-events:none;border-radius:999px;transition:transform .15s,opacity .15s;position:absolute;inset-inline-start:calc(var(--yt-progress,0) * (100% - var(--yt-thumb-size)));transform:translateY(-50%)scale(.85)}.yt-player-scrub:hover .yt-player-thumb,.yt-player-scrub:focus-visible .yt-player-thumb,.yt-player-scrub:active .yt-player-thumb{opacity:1;transform:translateY(-50%)scale(1)}.yt-player-scrub:hover .yt-player-track,.yt-player-scrub:focus-visible .yt-player-track,.yt-player-scrub:hover .yt-player-segments,.yt-player-scrub:focus-visible .yt-player-segments{height:5px}.yt-player-segments{inset-inline:0;pointer-events:none;align-items:stretch;gap:0;height:4px;display:flex;position:absolute;top:50%;transform:translateY(-50%)}.yt-player-segment{background:#ececec;border-radius:999px;min-width:0;height:100%;position:relative;overflow:hidden}.yt-player.is-fullscreen .yt-player-segment{background:#ffffff47}.yt-player-segment-fill{border-radius:inherit;background:var(--text);transform:scaleX(var(--yt-seg-fill,0));transform-origin:0;will-change:transform;position:absolute;inset:0}.yt-player.is-fullscreen .yt-player-segment-fill{background:#fff}.yt-player-controls{align-items:center;gap:var(--yt-ctrl-gap);width:100%;min-width:0;min-height:var(--yt-ctrl-size);display:flex}.yt-player-meta{align-items:center;gap:var(--yt-ctrl-gap);flex:auto;min-width:0;display:flex}.yt-player-toggle,.yt-player-fs{width:var(--yt-ctrl-size);height:var(--yt-ctrl-size);color:var(--text);cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border:0;border-radius:0;flex:none;place-items:center;margin:0;padding:0;display:grid}.yt-player-toggle{margin:-.5rem}.yt-player.is-fullscreen .yt-player-toggle,.yt-player.is-fullscreen .yt-player-fs{color:#fff;background:0 0}.yt-player-toggle:hover,.yt-player-fs:hover,.yt-player.is-fullscreen .yt-player-toggle:hover,.yt-player.is-fullscreen .yt-player-fs:hover{opacity:.78;background:0 0}.yt-player-toggle:active,.yt-player-fs:active{transform:scale(.96)}.yt-player-toggle-icon,.yt-player-fs-icon{color:inherit;font-size:1.45rem;line-height:1}.yt-player-fs-icon{font-size:1.28rem}.yt-player-time{white-space:nowrap;font-variant-numeric:tabular-nums;letter-spacing:.01em;min-width:0;color:color-mix(in srgb, var(--text) 62%, transparent);-webkit-user-select:none;user-select:none;flex:none;align-items:baseline;gap:3px;font-size:.72rem;font-weight:650;display:flex}.yt-player.is-fullscreen .yt-player-time{color:#ffffffdb}.yt-player-time-sep{opacity:.5}.yt-player-chapter{text-overflow:ellipsis;white-space:nowrap;min-width:0;color:color-mix(in srgb, var(--text) 58%, transparent);font-size:.72rem;font-weight:650;line-height:1.2;overflow:hidden}.yt-player.is-fullscreen .yt-player-chapter{color:#ffffffb8}.app-shell.is-mobile-nav .yt-player-frame{border-radius:10px}.app-shell.is-mobile-nav .yt-player.is-controls .yt-player-bar{--yt-ctrl-size:1.55rem;--yt-ctrl-gap:8px;margin-top:8px}.app-shell.is-mobile-nav .yt-player-toggle-icon{font-size:1.55rem}.app-shell.is-mobile-nav .yt-player-fs-icon{font-size:1.35rem}.app-shell.is-mobile-nav .yt-player-meta{gap:8px}.app-shell.is-mobile-nav .yt-player-time,.app-shell.is-mobile-nav .yt-player-chapter{font-size:.7rem}.watch-info{padding-top:14px}.watch-title{margin:0 0 6px;font-size:1.25rem;font-weight:700;line-height:1.45}.watch-title-meta{color:#065fd4;letter-spacing:-.01em;margin:0 0 12px;font-size:.78rem;font-weight:700;line-height:1.3}.watch-channel{grid-template-columns:36px 1fr;align-items:start;gap:10px;display:grid}.watch-desc-box{background:var(--panel);border-radius:12px;margin-top:14px;padding:12px 14px;position:relative}.watch-links{flex-wrap:wrap;gap:10px 14px;display:flex}.watch-description{white-space:pre-wrap;word-break:break-word;color:var(--muted);font-size:.9rem;line-height:1.6}.watch-desc-box.is-clamped .watch-description{max-height:4.8em;overflow:hidden}.watch-desc-box.is-expanded .watch-description{max-height:none}.watch-desc-text{white-space:pre-wrap}.watch-desc-link{border:1px solid var(--panel-border);color:var(--link);font:inherit;cursor:pointer;vertical-align:middle;word-break:break-word;background:0 0;border-radius:15px;align-items:center;gap:6px;margin:2px 4px 2px 0;padding:3px 10px;font-weight:500;line-height:1.4;text-decoration:none;display:inline-flex}.watch-desc-favicon{object-fit:contain;border-radius:3px;flex:0 0 14px;width:14px;height:14px}.watch-desc-yt{color:var(--link);font:inherit;font-weight:500;line-height:inherit;cursor:pointer;vertical-align:baseline;word-break:break-word;background:0 0;border:0;margin:0;padding:0;text-decoration:none;display:inline}.watch-desc-ts{color:inherit;font:inherit;text-align:start;cursor:pointer;background:0 0;border:0;border-radius:15px;align-items:baseline;gap:0;margin:8px 0;padding:0;display:flex}.watch-desc-ts:hover{background:var(--control)}.watch-desc-ts-time{min-width:3.2em;color:var(--link);border:solid 1px var(--panel-border);font-variant-numeric:tabular-nums;border-left:none;border-radius:0 15px 15px 0;flex:none;padding:3px 10px;font-weight:700}.watch-desc-ts-title{color:var(--panel-muted);text-align:start;border:solid 1px var(--panel-border);border-radius:15px 0 0 15px;padding:3px 10px}.watch-desc-ts:hover .watch-desc-ts-title{color:var(--text)}.watch-desc-link:hover,.watch-desc-yt:hover{color:var(--link-hover);text-decoration:underline}.watch-desc-link:hover{border-color:color-mix(in srgb, var(--text) 45%, var(--panel-border));text-decoration:none}.watch-desc-fade{inset-inline:0;cursor:pointer;width:100%;height:3.4em;color:var(--text);font:inherit;text-align:start;background:linear-gradient(to bottom, color-mix(in srgb, var(--panel) 0%, transparent) 0%, color-mix(in srgb, var(--panel) 72%, transparent) 42%, color-mix(in srgb, var(--panel) 96%, transparent) 100%);border:0;border-radius:0 0 12px 12px;justify-content:flex-start;align-items:flex-end;margin:0;padding:0 14px 10px;font-size:.86rem;font-weight:700;display:flex;position:absolute;bottom:0}.watch-desc-fade:hover{color:var(--text)}.watch-desc-more{width:100%;color:var(--text);font:inherit;cursor:pointer;text-align:start;background:0 0;border:0;margin-top:8px;padding:6px 0 0;font-size:.86rem;font-weight:700;display:block}.watch-desc-more:hover{color:var(--text)}.watch-related{margin-top:28px}.related-chips-rail{margin:0 0 14px}.related-chips-rail .h-rail{padding-bottom:0}.related-chips-rail .h-rail-track{align-items:center;gap:12px;min-width:0;padding:2px 0}.related-chips-rail .h-rail-arrow{width:28px}.related-chip{background:var(--control);color:var(--muted);font:inherit;white-space:nowrap;cursor:pointer;-webkit-tap-highlight-color:transparent;border:0;border-radius:10px;flex:none;margin:0;padding:8px 14px;font-size:.86rem;font-weight:650;line-height:1.25;transition:background .15s,color .15s}.related-chip:hover{background:var(--control-hover);color:var(--text)}.related-chip.is-active{background:color-mix(in srgb, var(--link) 10%, var(--control));color:var(--link)}.related-chip.is-active:hover{background:color-mix(in srgb, var(--link) 14%, var(--control))}.related-heading{margin:0 0 12px;font-size:1rem;font-weight:700}.related-status{color:var(--muted);margin:0;font-size:.9rem}.related-list{flex-direction:column;gap:12px;display:flex}.related-carousel .h-rail-track{gap:12px;padding-bottom:2px}.related-card{color:inherit;cursor:pointer;font:inherit;text-align:start;background:0 0;border:0;flex-direction:column;flex:0 0 clamp(180px,22vw,260px);gap:8px;margin:0;padding:0;display:flex}.related-card-media{aspect-ratio:16/9;background:var(--thumb-bg);border-radius:12px;position:relative;overflow:hidden}.related-card-img{object-fit:cover;width:100%;height:100%;transition:transform .25s;display:block}.related-duration{transition:opacity .2s}.related-card-body{flex-direction:column;gap:3px;min-width:0;display:flex}.related-title{color:var(--text);-webkit-line-clamp:2;line-clamp:2;word-break:break-word;direction:rtl;-webkit-box-orient:vertical;margin:0;font-size:.75rem;font-weight:600;line-height:1.35;display:-webkit-box;overflow:hidden}.related-channel,.related-date{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;margin:0;font-size:.72rem;font-weight:400;line-height:1.25;overflow:hidden}.related-card:hover .related-card-img,.related-card:focus-visible .related-card-img{transform:scale(1.04)}.related-card:hover .related-title,.related-card:focus-visible 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.browse-title{max-width:42rem;font-size:clamp(1.35rem,2.2vw,1.7rem)}.playlist-head-meta{color:var(--muted);flex-wrap:wrap;align-items:center;gap:8px;font-size:.9rem;display:flex}.playlist-head-meta .channel-logo{width:26px;height:26px;margin-top:0}.playlist-head-meta .playlist-count{font-size:inherit}.related-card.is-active .related-title{color:var(--text)}.related-card.is-active .related-card-media{box-shadow:inset 0 0 0 2px var(--ring)}.meta{flex:1;grid-template-columns:36px 1fr;gap:10px;padding-top:10px;display:grid}.video-card.is-title-only .meta{grid-template-columns:1fr;gap:0}.video-card.is-title-only 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(aspect-ratio<=11/10){.app-shell.is-mobile-nav{--mobile-page-gutter:16px;--ex-bar-control-h:2.5rem;--ex-bar-icon:1.1rem}.browse-heading-title{font-size:1.05rem}.browse-heading{gap:8px 10px;margin-bottom:16px;padding-bottom:12px}.browse-heading-sep{display:none}.select-filter-subject{max-width:min(100%,14.5rem)}.select-filter-subject .select-filter-trigger{height:auto}.select-filter-subject .select-filter-value{font-size:1rem}.select-filter-subject .select-filter-menu{width:min(17.5rem,100vw - 24px);min-width:0}.channel-tile{gap:10px;width:92px;padding:6px 4px}.channel-tile-avatar,.channel-tile-all{width:68px;height:68px}.channel-tile-all{font-size:.95rem}.channel-tile-name{font-size:.82rem;font-weight:650;line-height:1.3}.browse-filters,.browse-filters-bar{gap:8px}.browse-video-head{flex-direction:column;gap:0;display:flex}.browse-video-head .browse-search-mobile{flex:auto;order:1;width:auto;max-width:none;min-height:2.75rem;margin:0}.browse-video-head .browse-search-mobile 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.select-filter-trigger{box-sizing:border-box;width:100%;height:100%;min-height:2.75rem;padding:10px 12px}.browse-video-toolbar .browse-filters-meta{flex-wrap:nowrap;align-items:stretch;gap:8px;width:100%;display:flex}.browse-video-toolbar .browse-filters-meta .select-filter{flex-direction:column;flex:1 1 0;width:auto;min-width:0;max-width:none;min-height:2.75rem;margin-top:8px;display:flex}.browse-video-toolbar .browse-filters-meta .select-filter-trigger{box-sizing:border-box;width:100%;height:100%;min-height:2.75rem;padding:10px 12px}.browse-video-toolbar .browse-filters-meta .select-filter-type .select-filter-trigger{min-width:0}.browse-search-group{flex:100%;max-width:none}.select-filter{flex:calc(50% - 4px);max-width:none}.select-filter-type{flex:none}.video-grid{grid-template-columns:repeat(auto-fill,minmax(min(100%,240px),1fr));gap:20px 12px}.related-card{flex-basis:clamp(150px,55vw,200px)}.related-title{font-size:.75rem}.app-shell.is-mobile-nav .related-list{gap:12px;margin-top:2px}.app-shell.is-mobile-nav .related-card{text-align:start;flex-direction:row;flex:none;align-items:flex-start;gap:10px;width:100%}.app-shell.is-mobile-nav .related-card-media{border-radius:10px;flex:0 0 42%;width:42%;max-width:168px}.app-shell.is-mobile-nav .related-card-body{flex:auto;min-width:0;padding-top:1px}.app-shell.is-mobile-nav .related-title{-webkit-line-clamp:3;line-clamp:3;font-size:.84rem}.app-shell.is-mobile-nav .related-channel,.app-shell.is-mobile-nav .related-date{font-size:.74rem}.app-shell.is-mobile-nav .watch-related{margin-top:18px}.app-shell.is-mobile-nav .app-main{min-height:0;padding-bottom:calc(80px + env(safe-area-inset-bottom,0px));flex-direction:column;display:flex;overflow:hidden}.app-shell.is-mobile-nav .mobile-page-head-root{flex:none}.app-shell.is-mobile-nav .app-scroll{flex:auto;height:auto;min-height:0;max-height:none}:is(.app-shell.is-mobile-nav:has(.is-reading) 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.mobile-page-head-extra .ex-mode-switch{width:100%;margin:0 0 10px}.app-shell.is-mobile-nav .lessons-sidebar .ex-mode-switch,.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .browse-controls .ex-mode-switch,.app-shell.is-mobile-nav .lessons-body.is-mobile-inline .browse-controls .ex-mode-switch{width:100%;max-width:none;margin:0 0 10px}.app-shell.is-mobile-nav .browse-hero:not(.browse-hero-mobile){padding:16px var(--mobile-page-gutter) 12px;padding-bottom:0}.app-shell.is-mobile-nav .content,.app-shell.is-mobile-nav .watch-page{padding-top:1rem}.app-shell.is-mobile-nav .select-filter-subject .select-filter-menu{width:min(17.5rem, calc(100vw - 2 * var(--mobile-page-gutter)))}.app-shell.is-mobile-nav .practice-mobile-head .browse-controls,.app-shell.is-mobile-nav .practice-mobile-filters{padding-inline:0}.app-shell.is-mobile-nav .practice-mobile-head,.app-shell.is-mobile-nav .lessons-body.is-mobile-browse 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.mobile-nav-item{border-radius:12px;gap:4px;min-height:60px;padding:8px 4px 6px}.app-shell.is-mobile-nav .mobile-nav-symbol{font-size:2rem}.app-shell.is-mobile-nav .mobile-nav-item.is-home .mobile-nav-symbol{font-size:2.1rem}.app-shell.is-mobile-nav .mobile-nav-label{font-size:.76rem}.app-shell.is-mobile-nav .mobile-subhead{padding:10px 16px 12px}.app-shell.is-mobile-nav .mobile-subhead-kicker{font-size:.8rem}.app-shell.is-mobile-nav .mobile-subhead-title{font-size:1.12rem}.app-shell.is-mobile-nav .mobile-subhead-back,.app-shell.is-mobile-nav .ex-reader-back,.app-shell.is-mobile-nav .ex-reader-toc-toggle,.app-shell.is-mobile-nav .qz-back{width:var(--ex-bar-control-h);height:var(--ex-bar-control-h)}.app-shell.is-mobile-nav .mobile-subhead-back svg,.app-shell.is-mobile-nav .ex-reader-back svg,.app-shell.is-mobile-nav .ex-reader-toc-toggle svg,.app-shell.is-mobile-nav .qz-back svg{width:var(--ex-bar-icon);height:var(--ex-bar-icon)}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .lessons-tree,.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .ex-toc{gap:8px;padding-block:0 16px}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .ex-toc-mod{color:var(--text);background:#f5f5f5;padding:12px 14px}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .ex-toc-mod-title{font-size:.92rem;font-weight:700}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .ex-toc-mod-meta{color:var(--nav);font-size:.76rem}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .lessons-tree-mod{background:#f5f5f5;border-radius:12px;padding:.2rem;overflow:hidden}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .lessons-tree-mod-thumb{aspect-ratio:16/9;cursor:pointer;background:#ebebeb;border:0;border-radius:10px;flex:none;width:calc(100% - .8rem);margin:0 .4rem;padding:0;overflow:hidden}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .lessons-tree-mod-thumb img{object-fit:cover;width:100%;height:100%;display:block}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .lessons-tree-mod-head{align-items:center;gap:8px;padding:12px 14px}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .lessons-tree-mod-btn{color:var(--text);background:0 0;border-radius:0;padding:0;font-size:.92rem;font-weight:700}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .lessons-tree-mod-card-btn.is-bare{width:auto;height:auto;color:var(--text);background:0 0;border-radius:0;padding:0}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .lessons-tree-mod-card-btn.is-bare:hover{background:0 0}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .lessons-tree-mod-card-icon{font-size:1.35rem}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .lessons-tree-lesson-list{flex-direction:column;padding:0 15px 5px;display:flex}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .lessons-tree-lesson{color:var(--nav);background:0 0;border-bottom:2px solid #dfdfdf;border-radius:0;padding:10px 0;font-size:.9rem;font-weight:550;transition:color .18s,background .18s}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .ex-toc-mod.is-active{color:var(--text);background:0 0}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .ex-toc-mod.is-active .ex-toc-mod-title{color:var(--link)}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .ex-toc-mod.is-active .ex-toc-mod-meta{color:var(--nav)}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .lessons-tree-mod.is-current .lessons-tree-mod-btn{color:var(--text);background:0 0}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .lessons-tree-lessons-inner{gap:8px;padding:0}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .lessons-tree-lesson-list .lessons-tree-lesson:last-of-type{border-bottom:none}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .toc-nav-thumb{display:none}.app-shell.is-mobile-nav .lessons-body.is-mobile-browse .lessons-tree-chevron{color:var(--text);opacity:.72}.app-shell.is-mobile-nav .lessons-tree-empty{font-size:.88rem}.app-shell.is-mobile-nav .ex-card-num{font-size:2.45rem}.app-shell.is-mobile-nav .ex-card-kicker{font-size:.82rem}.app-shell.is-mobile-nav .qz-card-title{font-size:1.14rem}.app-shell.is-mobile-nav .qz-card-meta,.app-shell.is-mobile-nav .qz-card-cta{font-size:.86rem}.app-shell.is-mobile-nav .ex-reader-kicker,.app-shell.is-mobile-nav .qz-play-kicker{font-size:.78rem}.app-shell.is-mobile-nav .qz-play-title{font-size:1.05rem}.app-shell.is-mobile-nav .home-hero-card{border-radius:18px;min-height:12.5rem;padding:24px 18px 20px}.app-shell.is-mobile-nav .home-hero-slide{padding:24px 18px 20px}.app-shell.is-mobile-nav .home-hero-visual{width:5rem;height:5rem;top:1.5rem;left:1.5rem}.app-shell.is-mobile-nav .home-hero-title{font-size:1.4rem}.app-shell.is-mobile-nav .home-hero-desc{font-size:.84rem}.app-shell.is-mobile-nav .home-continue-caption{max-height:calc(21px + 2.214rem);padding:11px 11px 10px}.app-shell.is-mobile-nav .home-continue-title{font-size:.82rem}.app-shell.is-mobile-nav .home-continue-card{flex-basis:208px;width:208px}.app-shell.is-mobile-nav .home-shortcuts{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.app-shell.is-mobile-nav .home-premium-banner{width:100%;display:block}.app-shell.is-mobile-nav .home-premium-banner .sidebar-premium{gap:7px;width:100%;padding:16px 14px 14px}.app-shell.is-mobile-nav .home-premium-banner .sidebar-premium-kicker{font-size:.88rem}.app-shell.is-mobile-nav .home-premium-banner .sidebar-premium-title{font-size:1.08rem}.app-shell.is-mobile-nav .home-premium-banner .sidebar-premium-desc{font-size:.84rem}.app-shell.is-mobile-nav .home-premium-banner .sidebar-premium-cta{padding:11px 14px;font-size:.9rem}.app-shell.is-mobile-nav .home-shortcut-card{min-height:4.5rem;padding-inline:16px}.home-shortcut-copy{gap:3px!important}.app-shell.is-mobile-nav .home-shortcut-card .home-shortcut-title{font-size:1.05rem}.app-shell.is-mobile-nav .home-shortcut-card .home-shortcut-desc{font-size:.7rem}.home-shortcut-icon{font-size:2.35rem!important}.app-shell.is-mobile-nav .home-module-card{flex-basis:min(72vw,260px);width:min(72vw,260px)}.app-shell.is-mobile-nav .select-filter:not(.select-filter-subject) .select-filter-trigger{padding:10px 14px}.app-shell.is-mobile-nav .select-filter-value{font-size:.96rem;font-weight:600}.app-shell.is-mobile-nav .qz-q-prompt{font-size:1.06rem}.app-shell.is-mobile-nav .qz-choice{padding:14px 16px}.app-shell.is-mobile-nav .qz-choice-text{font-size:1rem}}.mobile-bottom-nav{inset-inline:0;z-index:40;padding-bottom:env(safe-area-inset-bottom,0px);background:var(--bg);border-top:1px solid var(--border-subtle);position:fixed;bottom:0}.mobile-bottom-nav-inner{grid-template-columns:repeat(5,minmax(0,1fr));align-items:stretch;width:100%;padding:4px 6px 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transparent)}.home-module-title{letter-spacing:0;-webkit-line-clamp:1;line-clamp:1;unicode-bidi:plaintext;-webkit-box-orient:vertical;font-size:.85rem;font-weight:600;line-height:1.4;display:-webkit-box;overflow:hidden}.module-sheet-portal{z-index:60;flex-direction:column;justify-content:flex-end;display:flex;position:fixed;inset:0}.module-sheet-backdrop{cursor:pointer;background:#0000006b;border:0;margin:0;padding:0;position:absolute;inset:0}.module-sheet{z-index:1;--module-sheet-inset:16px;background:var(--elevated);max-height:min(88vh,760px);box-shadow:var(--elevated-shadow);padding-bottom:env(safe-area-inset-bottom,0px);border-radius:18px 18px 0 0;flex-direction:column;animation:.24s cubic-bezier(.4,0,.2,1) module-sheet-in;display:flex;position:relative}@keyframes module-sheet-in{0%{transform:translateY(100%)}to{transform:translate(0,0)}}.module-sheet-head{padding:16px var(--module-sheet-inset) 12px;flex:none;justify-content:space-between;align-items:center;gap:12px;display:flex}.module-sheet-title{letter-spacing:-.02em;min-width:0;margin:0;font-size:1.05rem;font-weight:800;line-height:1.3}.module-sheet-close{background:color-mix(in srgb, var(--text) 7%, transparent);width:34px;height:34px;color:var(--text);cursor:pointer;border:0;border-radius:999px;flex:none;place-items:center;margin:0;padding:0;display:grid}.module-sheet-close:active{transform:scale(.96)}.module-sheet-close svg{width:18px;height:18px}.module-sheet-body{min-height:0;padding-inline:var(--module-sheet-inset);flex:auto;padding-bottom:18px}.module-sheet-body .simplebar-content{flex-direction:column;gap:14px;padding-bottom:4px;display:flex}.module-sheet-thumb{aspect-ratio:16/9;background:color-mix(in srgb, var(--text) 6%, var(--bg));border-radius:14px;place-items:center;width:100%;display:grid;overflow:hidden}.module-sheet-thumb img{object-fit:cover;width:100%;height:100%;display:block}.module-sheet-thumb-fallback{width:1.6rem;height:1.6rem;color:color-mix(in srgb, var(--text) 38%, transparent)}.module-sheet-full-title{color:color-mix(in srgb, var(--text) 62%, transparent);margin:0;font-size:.84rem;font-weight:600;line-height:1.45}.module-sheet-intro{color:color-mix(in srgb, var(--text) 78%, transparent);margin:0;font-size:.92rem;font-weight:500;line-height:1.7}.module-sheet-section-title{letter-spacing:-.02em;margin:0 0 .55em;font-size:.95rem;font-weight:800;line-height:1.3}.module-sheet-lessons,.module-sheet-shortcuts{margin:0}.module-sheet-lesson-list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.module-sheet-lesson{width:100%;color:var(--home-shortcut-ink,#1a4480);text-align:start;cursor:pointer;font:inherit;background:#ebf1fd;border:0;border-radius:12px;align-items:center;margin:0;padding:11px 12px;font-size:.88rem;font-weight:600;line-height:1.35;transition:background .15s;display:flex}.module-sheet-lesson>span{flex:auto;min-width:0}.module-sheet-lesson-crown,.lessons-tree-lesson-crown{color:#d99a14;flex:none;margin-inline-start:auto}.module-sheet-lesson:hover{background:#dfe8fc}.module-sheet-lesson:active{transform:scale(.99)}.module-sheet-empty{color:color-mix(in srgb, var(--text) 48%, transparent);margin:0;font-size:.84rem;font-weight:600}.module-sheet-lessons-skel{flex-direction:column;gap:6px;display:flex}.module-sheet-lesson-skel{background:linear-gradient(90deg, var(--skeleton-a) 25%, var(--skeleton-b) 50%, var(--skeleton-a) 75%);background-size:200% 100%;border-radius:12px;height:42px}.module-sheet-shortcut-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.module-sheet-shortcut{min-height:3.35rem;color:var(--home-shortcut-ink,#1a4480);text-align:start;cursor:pointer;font:inherit;-webkit-tap-highlight-color:transparent;background:#ebf1fd;border:0;border-radius:14px;flex-direction:row;align-items:center;gap:10px;margin:0;padding:8px 12px;transition:background .15s,transform .15s;display:flex}.module-sheet-shortcut:hover{background:#dfe8fc}.module-sheet-shortcut:active{transform:scale(.985)}.module-sheet-shortcut-icon{color:inherit;flex:none;font-size:1.7rem;line-height:1;font-variation-settings:"FILL" 0, "wght" 300, "GRAD" 0, "opsz" 15!important}.module-sheet-shortcut-copy{flex-direction:column;gap:2px;min-width:0;display:flex}.module-sheet-shortcut-title{letter-spacing:-.02em;font-size:.86rem;font-weight:800;line-height:1.15}.module-sheet-shortcut-desc{opacity:.78;font-size:.64rem;font-weight:600;line-height:1.15}@media (width>=720px){.module-sheet-portal{justify-content:center;align-items:center;padding:24px}.module-sheet{border-radius:18px;width:min(100%,460px);max-height:min(86vh,720px);animation:.22s cubic-bezier(.4,0,.2,1) module-sheet-in-center}@keyframes module-sheet-in-center{0%{opacity:0;transform:translateY(12px)scale(.98)}to{opacity:1;transform:translate(0,0)scale(1)}}}.home-video-rail .video-card{flex:0 0 min(72vw,260px);width:min(72vw,260px);min-height:0}.home-rail-skeletons{gap:12px;display:flex;overflow:hidden}.home-module-skel,.home-video-skel{background:linear-gradient(90deg, var(--skeleton-a) 25%, var(--skeleton-b) 50%, var(--skeleton-a) 75%);background-size:200% 100%;border-radius:14px;flex:none;width:min(72vw,260px);height:168px;animation:1.2s linear infinite shimmer}[data-theme=dark] .home-shortcut-card{background:color-mix(in srgb, var(--home-accent) 12%, var(--bg))}[data-theme=dark] .home-shortcut-card:hover{background:color-mix(in srgb, var(--home-accent) 16%, var(--bg))}[data-theme=dark] .home-subject-card{background:color-mix(in srgb, #93c5fd 14%, var(--bg))}[data-theme=dark] .home-subject-card:hover{background:color-mix(in srgb, #93c5fd 20%, var(--bg))}.app-shell:not(.is-mobile-nav) .home-body{gap:26px;max-width:none;margin-inline:0;padding-top:14px}.app-shell:not(.is-mobile-nav) .home-hero-card{min-height:13.25rem;padding:32px 28px 26px}.app-shell:not(.is-mobile-nav) .home-hero-slide{padding:32px 28px 26px}.app-shell:not(.is-mobile-nav) .home-hero-visual{width:5.8rem;height:5.8rem;top:1.6rem;left:1.6rem}.app-shell:not(.is-mobile-nav) .home-hero-title{font-size:1.72rem}.app-shell:not(.is-mobile-nav) .home-shortcut-card{min-height:4.7rem;padding-inline:28px;font-size:.82rem}[data-theme=dark] .home-shortcut-card{--home-shortcut-ink:#bfdbfe}.app-shell:not(.is-mobile-nav) .home-module-card{flex-basis:260px;width:260px}.app-shell:not(.is-mobile-nav) .home-subject-card{flex-basis:200px;width:200px}.app-shell:not(.is-mobile-nav) .home-continue-card{flex-basis:228px;width:228px}.app-shell:not(.is-mobile-nav) .home-module-skel{width:260px;height:168px}.app-shell:not(.is-mobile-nav) .home-video-rail .video-card{flex-basis:260px;width:260px}.profile-body{flex-direction:column;gap:14px;padding-bottom:28px;display:flex}.profile-identity-panel{color:var(--text);background:#f1f1f1;border-radius:18px;flex-direction:row;justify-content:space-between;align-items:stretch;gap:16px;padding:16px 18px;display:flex}.profile-identity-copy{flex-direction:column;justify-content:center;gap:2px;min-width:0;display:flex}.profile-name{color:var(--text);letter-spacing:-.03em;text-overflow:ellipsis;white-space:nowrap;margin:0;font-size:clamp(1.2rem,2.6vw,1.4rem);font-weight:750;line-height:1.2;overflow:hidden}.profile-plan-status{min-width:0;color:color-mix(in srgb, var(--text) 48%, transparent);letter-spacing:-.01em;align-items:center;gap:.35em;font-size:.82rem;font-weight:600;line-height:1.2;display:inline-flex}.profile-plan-status svg{stroke-width:2.2px;flex:none;width:.95em;height:.95em}.profile-identity-panel.is-premium .profile-plan-status{color:var(--profile-ink);font-weight:700}.profile-upgrade{background:var(--profile-ink);color:#fff;width:auto;font:inherit;letter-spacing:-.01em;cursor:pointer;box-sizing:border-box;white-space:nowrap;border:0;border-radius:12px;flex:none;align-self:stretch;align-items:center;gap:8px;margin:0;padding:0 22px;font-size:.86rem;font-weight:700;line-height:1.2;transition:background .15s;display:inline-flex}.profile-upgrade>svg:first-child{stroke-width:2.2px;flex:none;width:1.05rem;height:1.05rem}.profile-upgrade span{text-align:start;flex:0 auto}.profile-upgrade-arrow{stroke-width:2.4px;opacity:.85;flex:none;width:1rem;height:1rem;transition:transform .15s,opacity .15s}.profile-upgrade:hover{background:color-mix(in srgb, var(--profile-ink) 86%, #000)}.profile-upgrade:hover .profile-upgrade-arrow{opacity:1;transform:translate(-2px)}.profile-upgrade:active{background:color-mix(in srgb, var(--profile-ink) 78%, #000)}@media (width<=560px){.profile-identity-panel{flex-direction:column;align-items:stretch;gap:14px;padding:16px}.profile-identity-copy{gap:6px}.profile-upgrade{align-self:stretch;width:100%;padding:12px 16px}.profile-upgrade span{flex:auto}}.profile-analytics{flex-direction:column;gap:0;padding:0;display:flex}.profile-analytics-panel{color:var(--text);background:#f1f1f1;border-radius:18px;flex-direction:column;gap:18px;padding:16px;display:flex}.profile-analytics-toolbar{flex-direction:column;align-items:stretch;gap:12px;display:flex}.profile-analytics-heading{color:var(--text);letter-spacing:-.02em;margin:0;font-size:1.05rem;font-weight:750}.profile-analytics-filters{flex-wrap:wrap;align-items:center;gap:8px;width:100%;min-width:0;display:flex}.profile-analytics-filter,.profile-analytics .select-filter:not(.select-filter-subject){flex:auto;min-width:0}.profile-analytics-filter .select-filter-trigger,.profile-analytics .select-filter:not(.select-filter-subject) .select-filter-trigger{width:100%;color:var(--text);background:#fff}.profile-analytics-empty{color:color-mix(in srgb, var(--text) 45%, transparent);margin:0;font-size:.84rem;font-weight:550}.profile-stat{background:#fff;border-radius:14px;flex-direction:column;gap:8px;min-width:0;padding:12px 14px;display:flex}.profile-stat-label{color:color-mix(in srgb, var(--text) 46%, transparent);letter-spacing:-.01em;font-size:.72rem;font-weight:650;line-height:1.2}.profile-stat-value{color:var(--text);letter-spacing:-.03em;font-variant-numeric:tabular-nums;font-size:clamp(1rem,2.2vw,1.18rem);font-weight:750;line-height:1.1}.profile-chart-bar.is-empty{background:color-mix(in srgb, var(--text) 8%, transparent);border-radius:2px;max-width:36px;height:2px}.profile-chart-xlabel,.profile-chart-tip,.profile-chart-month-label{color:color-mix(in srgb, var(--text) 55%, transparent)}.profile-theme{box-sizing:border-box;background:#f1f1f1;border-radius:14px;justify-content:space-between;align-items:center;gap:12px;width:100%;margin:0;padding:7px 16px;display:flex}.profile-theme-label{color:var(--text);font-size:.9rem;font-weight:700}.profile-theme .profile-theme-switch{flex:0 16rem;min-width:0;margin:0}.profile-support{width:100%;color:var(--text);font:inherit;cursor:pointer;box-sizing:border-box;background:#f1f1f1;border:0;border-radius:14px;align-items:center;gap:8px;margin:0;padding:13px 16px;font-size:.9rem;font-weight:700;text-decoration:none;display:inline-flex}.profile-support:hover{background:color-mix(in srgb, var(--text) 6%, #f1f1f1)}.profile-support svg{flex:none;width:1.05rem;height:1.05rem}.profile-support span{text-align:start;flex:auto}.profile-support-arrow{opacity:.55}.profile-signout{color:#9f1f14;width:100%;font:inherit;cursor:pointer;background:#f8e9e8;border:0;border-radius:14px;justify-content:center;align-items:center;gap:8px;margin:0;padding:13px 16px;font-size:.9rem;font-weight:700;display:inline-flex}.profile-signout:hover{background:#f3dcda}.profile-confirm-cancel{background:var(--profile-surface);color:var(--profile-ink)}.profile-confirm-cancel:hover{background:color-mix(in srgb, var(--profile-ink) 8%, var(--profile-surface))}.profile-signout svg{width:1.05rem;height:1.05rem}.profile-signout:disabled{opacity:.6;cursor:default}.profile-analytics-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid}.profile-stat-value-num{font-feature-settings:"tnum"}@media (width<=640px){.profile-analytics-stats{gap:6px}.profile-stat{border-radius:12px;padding:10px 12px}.profile-stat-value{font-size:.98rem}}.profile-chart{flex-direction:column;gap:8px;width:100%;display:flex}.profile-chart-bars{align-items:stretch;gap:clamp(4px,1.2vw,12px);height:180px;margin-top:18px;display:flex;position:relative;overflow:visible}.profile-chart-avg{z-index:2;pointer-events:none;border-top:1px dashed color-mix(in srgb, var(--profile-accent,#065fd4) 40%, transparent);height:0;position:absolute;left:0;right:0}.profile-chart-avg span{background:color-mix(in srgb, #fff 90%, var(--profile-accent,#065fd4));color:color-mix(in srgb, var(--profile-accent,#065fd4) 82%, #000);white-space:nowrap;border-radius:999px;padding:1px 6px;font-size:.65rem;font-weight:700;line-height:1.2;position:absolute;top:0;left:2px;transform:translateY(-50%)}.profile-chart-col{flex-direction:column;flex:1 1 0;min-width:0;height:100%;display:flex}.profile-chart-bar-slot{flex:auto;justify-content:center;align-items:flex-end;width:100%;height:100%;min-height:0;display:flex}.profile-chart-bar{background:linear-gradient(180deg, color-mix(in srgb, var(--profile-accent,#065fd4) 82%, #fff), var(--profile-accent,#065fd4));border-radius:10px 10px 4px 4px;width:100%;max-width:15rem;margin-inline:auto;transition:height .45s cubic-bezier(.22,1,.36,1);position:relative}.profile-chart-tip{white-space:nowrap;pointer-events:none;direction:ltr;unicode-bidi:isolate;font-size:.68rem;font-weight:700;position:absolute;bottom:calc(100% + 6px);left:50%;transform:translate(-50%)}.profile-time{direction:ltr;unicode-bidi:isolate;align-items:baseline;gap:.28em;display:inline-flex}.profile-time-part{direction:ltr;unicode-bidi:isolate;display:inline-block}.profile-chart-axis{flex-direction:column;gap:6px;display:flex}.profile-chart-labels{gap:clamp(4px,1.2vw,12px);display:flex}.profile-chart-xlabel{text-align:center;flex-direction:column;flex:1 1 0;justify-content:flex-start;align-items:center;gap:1px;min-width:0;font-size:.72rem;font-weight:650;line-height:1.2;display:flex}.profile-chart-xlabel-line{text-overflow:ellipsis;white-space:nowrap;max-width:100%;display:block;overflow:hidden}.profile-chart-months{border-top:1px solid color-mix(in srgb, var(--profile-ink) 14%, transparent);gap:clamp(4px,1.2vw,12px);padding-top:6px;display:flex}.profile-chart-month{justify-content:center;align-items:center;min-width:0;display:flex;position:relative}.profile-chart-month+.profile-chart-month:before{content:"";background:color-mix(in srgb, var(--profile-ink) 14%, transparent);width:1px;position:absolute;top:10%;bottom:10%;left:0}.profile-chart-month-label{letter-spacing:-.01em;text-align:center;text-overflow:ellipsis;white-space:nowrap;max-width:100%;padding:0 4px;font-size:.7rem;font-weight:700;overflow:hidden}.profile-chart.is-dense .profile-chart-bars,.profile-chart.is-dense .profile-chart-labels,.profile-chart.is-dense .profile-chart-months{gap:3px}.profile-chart.is-dense .profile-chart-bar{border-radius:6px 6px 3px 3px}.profile-chart.is-dense .profile-chart-xlabel{font-size:.64rem}.profile-chart.is-weekly .profile-chart-xlabel{font-size:.7rem}@media (width<=640px){.profile-chart-bars{gap:4px;height:160px}.profile-chart-labels{gap:4px}.profile-chart-tip{font-size:.58rem}}.profile-chart.is-dense .profile-chart-tip{font-size:.58rem}.profile-confirm-portal{z-index:80;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.profile-confirm-backdrop{cursor:pointer;background:#0000006b;border:0;margin:0;padding:0;position:absolute;inset:0}.profile-confirm-backdrop:disabled{cursor:default}.profile-confirm{z-index:1;background:#fff;border-radius:18px;flex-direction:column;gap:10px;width:min(100%,20rem);padding:18px;display:flex;position:relative;box-shadow:0 18px 40px #0000002e}.profile-confirm-title{color:var(--profile-ink,#065fd4);letter-spacing:-.02em;margin:0;font-size:1.05rem;font-weight:750;line-height:1.25}.profile-confirm-text{color:color-mix(in srgb, var(--profile-ink,#065fd4) 68%, transparent);margin:0 0 6px;font-size:.86rem;font-weight:550;line-height:1.45}.profile-confirm-actions{grid-template-columns:1fr 1fr;gap:8px;display:grid}.profile-confirm-cancel,.profile-confirm-danger{font:inherit;cursor:pointer;border:0;border-radius:12px;margin:0;padding:11px 12px;font-size:.86rem;font-weight:700}.profile-confirm-danger{color:#fff;background:#b42318}.profile-confirm-danger:hover{background:#9f1f14}.profile-confirm-cancel:disabled,.profile-confirm-danger:disabled{opacity:.6;cursor:default}.profile-auth-error{color:#b42318;text-align:center;margin:0;font-size:.78rem;font-weight:650}.profile-auth-info{color:#1a4480;margin:0;font-size:.78rem;font-weight:650}.lessons-body.is-mobile-browse{flex-direction:column}.lessons-body.is-mobile-inline{flex:auto;min-height:0}.lessons-body.is-mobile-inline .lessons-sidebar{display:none}.lessons-body.is-mobile-inline .lessons-read{flex-direction:column;flex:auto;min-height:0;padding-block:0;display:flex}.lessons-body.is-mobile-inline .lessons-read-scroll{flex:auto;min-height:0;padding:0}.lessons-body.is-mobile-inline.is-reading .lessons-read-scroll,.lessons-body.is-mobile-inline.is-reading .ex-reader-read-scroll{padding-top:8px}.practice-mobile-head{padding:8px var(--mobile-page-gutter,16px) 0;border-bottom:1px solid var(--border-subtle);flex-direction:column;flex:none;gap:8px;padding-top:0;display:flex}.practice-mobile-head .browse-controls{padding:0}.practice-mobile-head .ex-mode-switch{width:100%;margin:0}.practice-mobile-filters{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);align-items:stretch;gap:8px;padding:0 0 10px;display:grid}.practice-mobile-filters .select-filter{flex-direction:column;width:100%;min-width:0;min-height:2.75rem;display:flex}.practice-mobile-filters .select-filter-module,.practice-mobile-filters .select-filter-type{flex:none;width:100%;min-width:0;max-width:none}.practice-mobile-filters .select-filter-module:only-child,.practice-mobile-filters .select-filter:only-child{grid-column:1/-1}.practice-mobile-filters .practice-filter-trigger,.practice-mobile-filters .select-filter-trigger{background:var(--control);width:100%;min-width:0;height:100%;min-height:2.75rem;color:var(--text);cursor:pointer;font:inherit;text-align:start;box-sizing:border-box;border:0;border-radius:10px;flex:auto;justify-content:space-between;align-items:center;margin:0;padding:10px 12px;transition:background .15s;display:flex}.practice-mobile-filters .practice-filter-trigger:hover,.practice-mobile-filters .select-filter-trigger:hover,.practice-mobile-filters .select-filter.is-open .select-filter-trigger{background:var(--control-hover)}.practice-mobile-filters .select-filter-type .select-filter-trigger{width:100%;min-width:0}.practice-mobile-filters .select-filter-value{font-size:.88rem;font-weight:750;line-height:1.25}.app-shell.is-mobile-nav .practice-mobile-filters .select-filter-trigger,.app-shell.is-mobile-nav .practice-mobile-filters .practice-filter-trigger{padding:10px 12px}.app-shell.is-mobile-nav .practice-mobile-filters .select-filter-value{font-size:.88rem}.lessons-body.is-mobile-browse:not(.is-mobile-inline):not(.is-module-view):not(.is-reading) .lessons-read,.lessons-body.is-mobile-browse.is-module-view .lessons-sidebar,.lessons-body.is-mobile-browse.is-reading .lessons-sidebar{display:none}.lessons-body.is-mobile-browse:not(.is-mobile-inline) .lessons-sidebar{border-inline-end:0;border-bottom:0;flex:auto;width:100%;min-height:0;max-height:none;padding-top:0}.lessons-body.is-mobile-browse .lessons-tree-scroll{flex:auto;min-height:0}.app-shell.is-mobile-nav .browse-controls{padding:0 var(--mobile-page-gutter,16px) 8px;flex-direction:column;flex:none;gap:8px;display:flex}.app-shell.is-mobile-nav .browse-controls .ex-mode-switch{width:100%;max-width:none;margin:0 0 10px}.app-shell.is-mobile-nav .browse-controls .browse-sort{width:100%;max-width:none}.lessons-tree-lesson.is-static{cursor:default;pointer-events:none}.lessons-tree-lesson.is-done{color:color-mix(in srgb, #16a34a 75%, 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input[readonly]{background:var(--c-pale);color:var(--c-text)}.auth-otp{text-align:center;letter-spacing:.36em!important;font-size:1.5rem!important;font-weight:700!important}.auth-submit{color:#fff;cursor:pointer;background:linear-gradient(#4a8cf9,#2259cf);border:0;border-radius:999px;min-height:3.3rem;margin-top:6px;padding:.55rem 1.35rem;font-family:IBM Plex Sans Arabic,Zain,sans-serif;font-size:1.1rem;font-weight:800;transition:translate .2s,filter .2s}.auth-submit:hover:not(:disabled){filter:brightness(1.06)}.auth-submit:active:not(:disabled){translate:0 .1rem}.auth-submit:disabled,.auth-google:disabled,.auth-link:disabled,.auth-tab:disabled{opacity:.6;cursor:default}.auth-or{color:var(--c-text);grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;margin:24px 0 20px;font-size:.9rem;font-weight:600;display:grid}.auth-or:before,.auth-or:after{content:"";background:var(--c-pale-line);height:1px}.auth-google{width:100%;min-height:3.3rem;color:var(--c-ink);cursor:pointer;background:linear-gradient(#f6f9ff,#dfe9fb);border:1.5px solid #b7cbee;border-radius:999px;justify-content:center;align-items:center;gap:10px;padding:.5rem 1.2rem;font-family:IBM Plex Sans Arabic,Zain,sans-serif;font-size:1.05rem;font-weight:800;transition:translate .2s,box-shadow .2s,filter .2s;display:flex;box-shadow:0 .2rem #b7cbee}.auth-google:hover:not(:disabled){filter:brightness(.98);translate:0 -2px}.auth-google:active:not(:disabled){translate:0 .1rem;box-shadow:0 .1rem #b7cbee}.auth-google-mark{flex:none;width:1.4rem;height:1.4rem}.auth-link{width:100%;color:var(--c-blue-deep);font:inherit;cursor:pointer;text-align:center;background:0 0;border:0;margin-top:8px;padding:10px;font-size:1rem;font-weight:700;display:block}.auth-link:hover:not(:disabled){color:var(--c-blue)}.auth-submit:focus-visible,.auth-google:focus-visible,.auth-link:focus-visible,.auth-tab:focus-visible,.auth-logo:focus-visible{outline:2px solid var(--c-blue);outline-offset:3px}.auth-error,.auth-info{border-radius:.9rem;margin:0;padding:10px 14px;font-size:.95rem;font-weight:600;line-height:1.5}.auth-error{color:#b42318;background:#fdecea;border-inline-start:4px solid #e5584a}.auth-info{background:var(--c-pale);color:var(--c-blue-deep);border-inline-start:4px solid var(--c-blue)}@keyframes auth-rise{0%{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}@media (prefers-reduced-motion:reduce){.auth-hero-inner,.auth-panel-inner,.auth-submit,.auth-google,.auth-spinner,.app-boot-spinner{transition:none!important;animation:none!important}.auth-spinner{opacity:.7;border-color:#2f6fe4}.app-boot-spinner{opacity:.7;border-color:#1a4480}}#print-root{display:none}#print-root[data-print-measure="1"]{visibility:hidden!important;pointer-events:none!important;z-index:-1!important;background:#fff!important;width:210mm!important;max-width:210mm!important;display:block!important;position:fixed!important;top:0!important;left:0!important}#print-root[data-print-measure="1"]>.print-page-frame>tbody>tr>td{padding:0 12mm!important}#print-root[data-print-measure="1"] .print-katex-block{width:100%!important;max-width:100%!important}@media print{@page{margin:0}html,body{color:#000!important;background:#fff!important;height:auto!important;margin:0!important;padding:0!important;overflow:visible!important}body>:not(#print-root){display:none!important}#print-root{box-sizing:border-box!important;color:#000!important;background:#fff!important;width:100%!important;margin:0!important;padding:0!important;font-size:.9em!important;display:block!important;position:static!important;inset:auto!important}#print-root .print-page-watermark{z-index:2147483646!important;pointer-events:none!important;-webkit-print-color-adjust:exact!important;print-color-adjust:exact!important;background:0 0!important;justify-content:center!important;align-items:center!important;display:flex!important;position:fixed!important;inset:0!important}#print-root .print-page-watermark-brand{color:#111!important;opacity:.075!important;flex-direction:column!important;justify-content:center!important;align-items:center!important;gap:.4em!important;width:96%!important;max-width:96%!important;line-height:1!important;display:flex!important;transform:rotate(-28deg)!important}#print-root .print-page-watermark-ar{letter-spacing:-.04em!important;text-align:center!important;width:100%!important;font-family:IBM Plex Sans Arabic,Zain,sans-serif!important;font-size:min(22vw,52mm)!important;font-weight:500!important;line-height:1.05!important;display:block!important}#print-root .print-page-watermark-latin{letter-spacing:.08em!important;text-align:center!important;text-transform:lowercase!important;width:100%!important;font-family:Gugi,Arial,sans-serif!important;font-size:min(8.5vw,20mm)!important;font-weight:200!important;line-height:1!important;display:block!important}#print-root>.print-page-frame{z-index:1!important;border-collapse:collapse!important;border-spacing:0!important;table-layout:fixed!important;background:0 0!important;width:100%!important;display:table!important;position:relative!important}#print-root>.print-page-frame>thead{display:table-header-group!important}#print-root>.print-page-frame>tfoot{display:table-footer-group!important}#print-root>.print-page-frame>tbody{display:table-row-group!important}#print-root>.print-page-frame>thead>tr,#print-root>.print-page-frame>tfoot>tr,#print-root>.print-page-frame>tbody>tr{page-break-inside:auto;break-inside:auto}#print-root>.print-page-frame>thead td,#print-root>.print-page-frame>tfoot td{vertical-align:middle!important;-webkit-print-color-adjust:exact!important;print-color-adjust:exact!important;background:#fff!important;border:0!important;padding:0 12mm!important}#print-root>.print-page-frame>thead td{height:20mm!important}#print-root>.print-page-frame>tfoot td{height:11mm!important}#print-root .print-page-chrome{box-sizing:border-box!important;align-items:center!important;width:100%!important;display:flex!important}#print-root .print-page-chrome.is-header{justify-content:space-between!important;min-height:20mm!important}#print-root .print-page-chrome.is-footer{justify-content:center!important;min-height:11mm!important}#print-root .print-page-brand{color:#111!important;-webkit-print-color-adjust:exact!important;print-color-adjust:exact!important;flex-direction:column!important;justify-content:center!important;align-items:flex-end!important;gap:2px!important;height:14mm!important;line-height:1!important;display:flex!important}#print-root .print-page-brand-ar{letter-spacing:-.04em!important;font-family:IBM Plex Sans Arabic,Zain,sans-serif!important;font-size:20pt!important;font-weight:500!important;line-height:1.05!important}#print-root .print-page-brand-latin{letter-spacing:.08em!important;text-transform:uppercase!important;font-family:Gugi,sans-serif!important;font-size:11pt!important;font-weight:200!important;line-height:1!important}#print-root .print-page-qr{flex:none!important;justify-content:center!important;align-items:center!important;height:14mm!important;display:flex!important}#print-root .print-page-qr img,#print-root .print-page-qr svg{-webkit-print-color-adjust:exact!important;print-color-adjust:exact!important;width:14mm!important;max-width:14mm!important;height:14mm!important;display:block!important}#print-root .print-page-footer-row{color:#222!important;flex-wrap:wrap!important;justify-content:center!important;align-items:center!important;gap:12px 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0;margin:0;padding:0}.print-sheet-title{color:#000;margin:0 0 .85rem;font-family:Zain,IBM Plex Sans Arabic,sans-serif;font-size:1.35rem;font-weight:700;line-height:1.35}#print-root .lessons-read-scale,#print-root .extract-read{width:100%!important;max-width:none!important;box-shadow:none!important;background:0 0!important;margin:0!important;padding:0!important;overflow:visible!important}#print-root .extract-render,#print-root .extract-table-wrap,#print-root .markdown-bidi-container{overflow:visible!important}#print-root h1,#print-root h2,#print-root h3,#print-root h4,#print-root h5,#print-root h6,#print-root .print-sheet-title{break-after:avoid;page-break-after:avoid;font-size:1.3em;font-weight:700;line-height:1.35}#print-root p{orphans:3;widows:3}#print-root img,#print-root picture,#print-root figure,#print-root .lesson-embed,#print-root .extract-image-center,#print-root .extract-image-side-row,#print-root .extract-image-side-row-middle,#print-root .extract-image-float,#print-root .extract-image-flow,#print-root .extract-image-slot,#print-root .extract-image-wing,#print-root .extract-table-wrap,#print-root pre,#print-root blockquote{break-inside:avoid!important;page-break-inside:avoid!important}#print-root .print-sheet img,#print-root .lessons-read-scale img,#print-root .extract-read img,#print-root .print-image-block>img{object-fit:contain!important;break-inside:avoid!important;page-break-inside:avoid!important;width:auto!important;max-width:100%!important;height:auto!important;max-height:100mm!important;margin-block:.55rem!important;margin-inline:auto!important;display:block!important}#print-root .print-image-block,#print-root .extract-image-center,#print-root .extract-image-slot,#print-root figure,#print-root 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.katex,#print-root .katex-scroll-body .katex-html,#print-root .katex-scroll-body .katex .base{white-space:nowrap!important;max-width:none!important;display:inline-block!important}#print-root .katex .katex-html{white-space:nowrap!important;max-width:none!important;overflow:visible!important}#print-root .print-table-wrap{background:0 0!important;border:0!important;width:100%!important;max-width:100%!important;margin:.75rem 0!important;padding:0!important;display:block!important;overflow:visible!important}#print-root .print-table-wrap table,#print-root .print-sheet table{page-break-inside:auto;break-inside:auto;-webkit-box-decoration-break:clone;box-decoration-break:clone;table-layout:auto!important;border-collapse:separate!important;border-spacing:0!important;background:#fff!important;border:0!important;border-radius:10px!important;width:100%!important;min-width:0!important;max-width:100%!important;margin:0!important;font-size:.8em!important;line-height:1.35!important;display:table!important;overflow:visible!important}#print-root .lessons-md-table-wrap,#print-root .extract-table-wrap,#print-root .lessons-md-table-shell,#print-root .lessons-md-table-stack,#print-root .lessons-md-table-tools,#print-root .simplebar-track{display:none!important}#print-root .print-simplebar-flat{width:100%!important;height:auto!important;max-height:none!important;display:block!important;overflow:visible!important}#print-root .print-sheet thead{display:table-header-group}#print-root .print-sheet 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10px!important}#print-root .print-sheet th:first-child,#print-root .print-sheet td:first-child{border-inline-start-width:1px!important}#print-root .print-sheet thead th,#print-root .print-sheet thead td,#print-root .print-sheet tbody:first-child tr:first-child>th,#print-root .print-sheet tbody:first-child tr:first-child>td,#print-root .print-sheet table>tr:first-child>th,#print-root .print-sheet table>tr:first-child>td{border-top-width:1px!important}#print-root .print-sheet thead:first-child tr:first-child>:first-child,#print-root .print-sheet tbody:first-child tr:first-child>:first-child,#print-root .print-sheet table>tr:first-child>:first-child{border-start-start-radius:10px!important}#print-root .print-sheet thead:first-child tr:first-child>:last-child,#print-root .print-sheet tbody:first-child tr:first-child>:last-child,#print-root .print-sheet table>tr:first-child>:last-child{border-start-end-radius:10px!important}#print-root .print-sheet thead th,#print-root .print-sheet thead 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tr:last-child>td,#print-root .print-sheet table.is-single-row tr:last-child>th,#print-root .print-sheet table.is-single-row tr:last-child>td{border-bottom-width:1px!important}#print-root .lessons-md-cell,#print-root .lessons-md-cell *{word-break:keep-all!important;overflow-wrap:normal!important;word-wrap:normal!important;-webkit-hyphens:none!important;hyphens:none!important;line-break:strict!important}#print-root .lessons-md-cell{white-space:normal!important;width:100%!important;max-width:none!important;font-size:inherit!important;padding:0!important;display:block!important;overflow:visible!important}#print-root .lesson-callout{background:0 0!important;border:0!important;border-radius:0!important;gap:.45rem!important;padding:0!important}#print-root .lesson-callout-head{break-after:avoid;page-break-after:avoid;font-size:1.3em;font-weight:700;line-height:1.35;color:#000!important;display:block!important}#print-root .lesson-callout-head .material-symbol.lesson-callout-symbol{display:none!important}#print-root .lesson-callout-title,#print-root .lesson-callout-title .lesson-md-text,#print-root .lesson-callout-title p{color:#000!important;font-size:inherit!important;font-weight:inherit!important;line-height:inherit!important;letter-spacing:normal!important;margin:0!important}}.lesson-acc-slot{--acc-ink:#0e2a57;--acc:#065fd4;isolation:isolate;background:color-mix(in srgb, var(--acc) 10%, var(--surface,#fff));color:var(--acc-ink);break-inside:avoid;border:0;border-radius:20px;flex-direction:column;align-items:flex-start;gap:14px;margin:1.6rem 0;padding:20px 22px;display:flex;position:relative;overflow:hidden}.lesson-acc-slot:before{content:"";z-index:-1;pointer-events:none;background-image:linear-gradient(to right, color-mix(in srgb, var(--acc-ink) 16%, transparent) 1px, transparent 1px), linear-gradient(to bottom, color-mix(in srgb, var(--acc-ink) 16%, transparent) 1px, transparent 1px);background-position:0 100%;background-size:2.2rem 2.2rem;position:absolute;inset:0;-webkit-mask-image:radial-gradient(110% 100% at 0 100%,#000 0% 25%,#0000 70%);mask-image:radial-gradient(110% 100% at 0 100%,#000 0% 25%,#0000 70%)}.lesson-acc-badge{top:14px;background:color-mix(in srgb, var(--acc-ink) 12%, transparent);width:26px;height:26px;color:var(--acc-ink);border-radius:999px;place-items:center;display:inline-grid;position:absolute;inset-inline-end:16px}.lesson-acc-text{color:#0b1f44;margin:0;padding-inline-end:34px;font-size:.92em;font-weight:700;line-height:1.7}.lesson-acc-cta{color:#fff;font:inherit;white-space:nowrap;cursor:pointer;box-shadow:none;background:#0b2c7a;border:0;border-radius:999px;align-items:center;gap:8px;margin:0;padding:7px 14px;font-size:.86em;font-weight:700;transition:transform .15s,filter .15s;display:inline-flex}.lesson-acc-cta:hover:not(:disabled){filter:brightness(1.07);transform:translateY(-1px)}.lesson-acc-cta:active:not(:disabled){transform:scale(.98)}.lesson-acc-cta:disabled{opacity:.55;cursor:default}.lesson-acc-cta .material-symbol{color:#fff;font-size:19px}.lesson-acc-cta .lesson-acc-cta-arrow{margin-inline-start:2px;font-size:18px}.lesson-diagram{--dg-deep:#0b2c7a;--dg-light:#5e96e6;--dg-tint:#e6eefb;--dg-tint2:#c9dbf6;--dg-white:#fff;--dg-accent:#e8871e;--dg-accentbg:#fdefdd;--dg-yes:#1e8e5a;--dg-no:#c0392b;cursor:zoom-in;break-inside:avoid;background:#e6effb;border-radius:1rem;margin:1.6rem 0;padding-block:.5rem;padding-inline:0;container-type:inline-size}[data-theme=dark] .lesson-diagram{--dg-deep:#dce8ff;--dg-light:#8db4f2;--dg-tint:#1c2a47;--dg-tint2:#2a3c63;--dg-white:#141b2c;--dg-accent:#f29a3a;--dg-accentbg:#3a2a17;--dg-yes:#4cc38a;--dg-no:#f0766a;background:#1c2a47}.lesson-diagram svg{width:100%;height:auto;margin:0 auto;font-family:Noto Kufi 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transparent);border-radius:999px;flex:none;place-items:center;width:34px;height:34px;display:inline-grid}.lesson-map-label{flex:auto}.lesson-map-hint{opacity:.7;flex:none;font-size:.82em;font-weight:600}.lesson-map-chevron{flex:none;transition:transform .18s}.lesson-map.is-open .lesson-map-chevron{transform:rotate(180deg)}.lesson-map-body .lesson-diagram{background:0 0;border-radius:0;margin:0;padding-block:0 .75rem}@media print{.lesson-map-head{display:none}}.diagram-zoom{z-index:1200;background:#06122ed1;place-items:center;padding:18px;display:grid;position:fixed;inset:0;overflow:auto}.diagram-zoom-body{background:var(--surface,#f8faff);cursor:default;border-radius:18px;width:min(1200px,100%);margin:0;padding:14px}.diagram-zoom-body 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.fc-front{background:#ddeae2}.fc-face-label{letter-spacing:.04em;color:color-mix(in srgb, var(--text) 45%, transparent);font-size:.72rem;font-weight:700}.fc-face-hint{color:color-mix(in srgb, var(--text) 40%, transparent);margin-top:auto;font-size:.75rem;font-weight:500}.fc-text{max-width:100%;font-size:1.15rem;font-weight:600;line-height:1.8}.fc-text p{margin:0 0 .4em}.fc-actions{justify-content:center;align-items:center;gap:12px;min-height:44px;display:flex}.fc-actions .qz-btn{justify-content:center;min-width:8.5rem}.fc-btn-known{color:#fff;background:#16a34a;border-color:#16a34a}.fc-nav{justify-content:center;align-items:center;gap:14px;display:flex}.fc-nav-count{text-align:center;min-width:4.5rem;color:color-mix(in srgb, var(--text) 55%, transparent);font-size:.85rem;font-weight:700}.fc-nav .qz-back:disabled{opacity:.35;cursor:default}.fc-shuffle{margin-inline-start:auto}@media (width<=640px){.fc-text{font-size:1.05rem}.lesson-acc-slot{padding:18px 16px}}@media print{#print-root 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.lessons-read-scroll>.simplebar-wrapper>.simplebar-mask>.simplebar-offset>.simplebar-content-wrapper{background:var(--bg)}[data-theme=dark] .lessons-md{background:var(--surface,#141b2c)}.lessons-md h1,.lessons-md h2,.lessons-md h3,.lessons-md h4,.lessons-md h5,.lessons-md h6,.lesson-section-body h1,.lesson-section-body h2,.lesson-section-body h3,.lesson-section-body h4{color:#0b2c7a}[data-theme=dark] .lessons-md h1,[data-theme=dark] .lessons-md h2,[data-theme=dark] .lessons-md h3,[data-theme=dark] .lessons-md h4,[data-theme=dark] .lessons-md h5,[data-theme=dark] .lessons-md h6,[data-theme=dark] .lesson-section-body h1,[data-theme=dark] .lesson-section-body h2,[data-theme=dark] .lesson-section-body h3,[data-theme=dark] .lesson-section-body h4{color:#dce8ff}.lessons-md{--tbl-head:#e6effb;--tbl-head-ink:#0b2c7a;--tbl-line:#c9dbf6;--tbl-band:#f5f8fd}[data-theme=dark] .lessons-md{--tbl-head:#1c2a47;--tbl-head-ink:#dce8ff;--tbl-line:#2a3c63;--tbl-band:#172238}.lessons-md 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.lesson-plot{filter:invert()hue-rotate(180deg)}.lesson-plot-panels{grid-template-columns:1fr;gap:.75rem;display:grid}.lesson-plot-panels .plot-view{width:100%;max-width:100%}@media (width>=760px){.lesson-plot-panels.is-row{grid-template-columns:repeat(var(--plot-cols,2), minmax(0, 1fr))}}.lesson-plot-loading{width:100%;min-height:16rem}.lesson-plot{min-height:12rem}.lesson-plot .MafsView{--mafs-bg:transparent;--mafs-fg:#000;--mafs-origin-color:#000;--grid-line-color:#0b2c7a21;--grid-line-subdivision-color:#0b2c7a12;--mafs-line-color:#0b2c7a29;--mafs-axis-stroke-width:1.5px}.lesson-plot .MafsView svg line[stroke*=grid-line]{stroke-width:1px}.lesson-plot .MafsView text,.lesson-plot .MafsView .mafs-shadow{font-family:Noto Kufi Arabic,Tahoma,sans-serif}.lesson-plot .plot-view{--plot-label-bg:var(--plot-bg)}.lesson-plot .plot-view .plot-chip .katex{background:var(--plot-label-bg);border-radius:4px;padding:0 2px;line-height:.85}.lesson-plot .plot-view 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code{color:inherit;font-family:inherit;font-size:inherit;font-weight:inherit;line-height:inherit;white-space:normal;text-underline-offset:3px;background:0 0;border:0;border-radius:0;padding:0;text-decoration:underline;text-decoration-thickness:1.5px}.lessons-md pre,.lesson-callout-body pre,.lesson-table-expand-panel pre,#print-root .lessons-read-scale pre,#print-root .print-sheet pre{border:1.5px solid color-mix(in srgb, var(--text,#111) 28%, var(--border,#ddd));color:inherit;font-family:inherit;font-size:inherit;white-space:pre-wrap;background:0 0;border-radius:12px;margin:0 0 16px;padding:12px 16px;line-height:1.7;overflow-x:visible}.lessons-md pre code,.lesson-callout-body pre code,.lesson-table-expand-panel pre code,#print-root .lessons-read-scale pre code,#print-root .print-sheet pre code{white-space:pre-wrap;line-height:inherit;text-decoration:none}.lessons-md p code,.lessons-md li code,.lessons-md td code,.lessons-md th code,.lessons-md pre code,.lesson-callout-body pre code,.lesson-table-expand-panel pre code,#print-root .lessons-read-scale pre code,#print-root .print-sheet pre code{font-family:inherit;font-size:inherit;line-height:inherit;background:0 0;border-radius:0;padding:0}.lessons-md p code,.lessons-md li code,.lessons-md td code,.lessons-md th code{white-space:normal}.fc-body{gap:16px}.fc-card{max-width:680px;margin-bottom:0;position:relative}.fc-card-inner{z-index:1;min-height:clamp(290px,46vh,450px)}.fc-face{gap:14px;padding:52px 26px 44px}.fc-face-label{top:16px;color:#0b2c7a;letter-spacing:.02em;background:#065fd421;border-radius:999px;padding:4px 13px;font-size:.72rem;font-weight:750;position:absolute;inset-inline-start:50%;transform:translate(-50%)}[dir=rtl] .fc-face-label,.fc-face[dir=rtl] .fc-face-label{transform:translate(50%)}.fc-face-hint{bottom:14px;text-align:center;color:color-mix(in srgb, var(--text) 38%, transparent);margin:0;font-size:.74rem;font-weight:600;position:absolute;inset-inline:0}.fc-back{color:#fff;background:#0b2c7a}.fc-back .fc-face-label{color:#fff;background:#ffffff29}.fc-back .fc-text,.fc-back .fc-text *{color:#fff}.fc-text{font-size:1.28rem;font-weight:700;line-height:1.85}.fc-back .fc-text{font-weight:600}.fc-known-chip{top:14px;color:#15803d;background:#16a34a26;border-radius:999px;align-items:center;gap:4px;padding:4px 10px 4px 8px;font-size:.72rem;font-weight:750;display:inline-flex;position:absolute;inset-inline-end:14px}.fc-known-chip svg{stroke-width:3px;width:13px;height:13px}.fc-actions{grid-template-columns:1fr 1fr;gap:12px;width:100%;max-width:680px;display:grid}.fc-actions .qz-btn{border-radius:14px;justify-content:center;min-width:0;min-height:52px;font-size:.98rem;font-weight:750}.fc-reveal{grid-column:1/-1}.fc-btn-review{color:#b91c1c;background:#fce9e9;border-color:#0000}.fc-btn-review:hover{background:#f9dcdc}@media (width<=640px){.fc-text{font-size:1.12rem}.fc-face{padding:50px 18px 42px}}.fc-actions .fc-btn-known{color:#fff;background:#16a34a;border-color:#0000}.fc-actions .fc-btn-known:hover{background:#15803d}.fc-text ul,.fc-text ol{text-align:start;margin:0;padding-inline-start:1.3em;display:inline-block}.fc-text li{margin:.15em 0}.fc-meta{align-items:center;gap:5px;display:inline-flex}.fc-meta-icon{color:color-mix(in srgb, var(--text) 48%, transparent);font-size:16px;line-height:1;display:inline-block;transform:translateY(-1.5px)}.tmac{box-sizing:border-box;text-align:center;min-height:100dvh;color:var(--text);flex-direction:column;justify-content:center;align-items:center;gap:14px;padding:24px;display:flex}.tmac-title{margin:0;font-size:1.25rem;font-weight:750;line-height:1.5}.tmac-text{max-width:24rem;color:color-mix(in srgb, var(--text) 65%, transparent);margin:0;font-size:.95rem;line-height:1.8}.tmac-btn{color:#fff;background:#0b2c7a;border-radius:14px;justify-content:center;align-items:center;min-height:48px;padding:0 28px;font-weight:750;text-decoration:none;display:inline-flex}.tmac-link{color:color-mix(in srgb, var(--text) 55%, transparent);font:inherit;cursor:pointer;background:0 0;border:0;font-size:.9rem}.tmac-spinner{border:3px solid color-mix(in srgb, var(--text) 14%, transparent);border-top-color:#0b2c7a;border-radius:50%;width:34px;height:34px;animation:.8s linear infinite tmac-spin}@keyframes tmac-spin{to{transform:rotate(360deg)}}.tmac-banner{z-index:9999;color:#fff;background:#0b2c7a;justify-content:space-between;align-items:center;gap:12px;padding:10px 16px;font-size:.88rem;font-weight:650;line-height:1.6;display:flex;position:fixed;top:0;left:0;right:0}.tmac-banner-x{color:#fff;font:inherit;cursor:pointer;background:#ffffff29;border:0;border-radius:999px;flex:none;padding:4px 12px;font-size:.8rem}body.has-tmac-banner #root{box-sizing:border-box;padding-top:84px}[data-theme=dark]{--tint:#16233b;--tint-hover:#1c2d4d;--tint-ink:#a9c6f0}[data-theme=dark] .lesson-inline-practice,[data-theme=dark] .ex-card,[data-theme=dark] .qz-card,[data-theme=dark] .qz-question,[data-theme=dark] .qz-choice,[data-theme=dark] .qz-btn,[data-theme=dark] .sm-card,[data-theme=dark] .profile-identity-panel,[data-theme=dark] .profile-analytics-panel,[data-theme=dark] .profile-theme,[data-theme=dark] .profile-support{background:var(--surface)}[data-theme=dark] .ex-card:hover,[data-theme=dark] .qz-card:hover,[data-theme=dark] .qz-choice:hover:not(:disabled),[data-theme=dark] .qz-btn:hover,[data-theme=dark] .sm-card:hover,[data-theme=dark] .profile-support:hover{background:color-mix(in srgb, var(--surface) 88%, #fff)}[data-theme=dark] .qz-choice.is-selected{background:color-mix(in srgb, var(--text) 10%, var(--surface))}[data-theme=dark] .qz-choice-badge{background:color-mix(in srgb, var(--text) 12%, var(--surface))}[data-theme=dark] .qz-choice-badge.is-selected{background:color-mix(in srgb, var(--text) 22%, var(--surface))}[data-theme=dark] .lesson-practice-sol-body{background:color-mix(in srgb, var(--surface) 70%, var(--bg))}[data-theme=dark] .lesson-quiz-choice{background:color-mix(in srgb, var(--surface) 72%, var(--bg))}[data-theme=dark] .lesson-quiz-choice:hover:not(:disabled){background:color-mix(in srgb, var(--surface) 88%, #fff)}[data-theme=dark] .lesson-quiz-explain{background:color-mix(in srgb, var(--surface) 78%, var(--bg))}[data-theme=dark] .ex-reader-back,[data-theme=dark] .ex-reader-toc-toggle,[data-theme=dark] .ex-reader-text-size,[data-theme=dark] .ex-reader-print-btn,[data-theme=dark] .ex-reader-title-wrap,[data-theme=dark] .ex-view-switch,[data-theme=dark] .qz-progress,[data-theme=dark] .yt-player-track,[data-theme=dark] .yt-player-segment,[data-theme=dark] .mobile-drill-back,[data-theme=dark] .lessons-md-table-stack-nav{background:var(--chip)}[data-theme=dark] .ex-reader-back:hover,[data-theme=dark] .ex-reader-toc-toggle:hover,[data-theme=dark] .ex-reader-print-btn:hover,[data-theme=dark] .ex-reader-text-size-btn:hover:not(:disabled),[data-theme=dark] .lessons-md-table-stack-nav-btn{background:color-mix(in srgb, var(--chip) 84%, #fff)}[data-theme=dark] .ex-reader-back:active,[data-theme=dark] .ex-reader-toc-toggle:active,[data-theme=dark] .ex-reader-print-btn:active,[data-theme=dark] .ex-reader-text-size-btn:active:not(:disabled),[data-theme=dark] .ex-view-btn:active{background:color-mix(in srgb, var(--chip) 74%, #fff)}[data-theme=dark] .ex-view-btn.is-active{background:color-mix(in srgb, var(--chip) 70%, #fff)}[data-theme=dark] .lessons-toc-thumb-more,[data-theme=dark] .profile-analytics-filter .select-filter-trigger,[data-theme=dark] .profile-analytics .select-filter:not(.select-filter-subject) .select-filter-trigger{background:var(--surface)}[data-theme=dark] .lessons-toc-thumb-more:hover{background:color-mix(in srgb, var(--surface) 88%, #fff)}[data-theme=dark] .profile-stat{background:color-mix(in srgb, var(--surface) 82%, #fff)}[data-theme=dark] .profile-confirm,[data-theme=dark] .app-error-modal,[data-theme=dark] .premium-modal,[data-theme=dark] .premium-modal-foot{background:var(--elevated)}[data-theme=dark] .app-boot{background:var(--bg)}[data-theme=dark] .lessons-toc-thumb,[data-theme=dark] .app-shell.is-mobile-nav .lessons-body.is-mobile-browse .lessons-tree-mod-thumb{background:var(--thumb-bg)}[data-theme=dark] .app-shell.is-mobile-nav .lessons-body.is-mobile-browse .ex-toc-mod,[data-theme=dark] .app-shell.is-mobile-nav .lessons-body.is-mobile-browse .lessons-tree-mod{background:var(--surface)}[data-theme=dark] .app-shell.is-mobile-nav .lessons-body.is-mobile-browse .lessons-tree-lesson{border-bottom-color:var(--border)}[data-theme=dark] .sidebar-premium{background:var(--tint);color:var(--tint-ink)}[data-theme=dark] .sidebar-premium-kicker{color:color-mix(in srgb, var(--tint-ink) 72%, transparent)}[data-theme=dark] .sidebar-premium-desc{color:color-mix(in srgb, var(--tint-ink) 78%, transparent)}[data-theme=dark] .home-hero-card{--hero-tone:#16233b!important;--hero-ink:#a9c6f0!important}[data-theme=dark] .home-hero-desc{color:var(--muted)}[data-theme=dark] .home-count{background:var(--tint);color:var(--tint-ink)}[data-theme=dark] .home-count:before{background-image:linear-gradient(to right, color-mix(in srgb, var(--tint-ink) 14%, transparent) 1px, transparent 1px), linear-gradient(to bottom, color-mix(in srgb, var(--tint-ink) 14%, transparent) 1px, transparent 1px)}[data-theme=dark] .home-count-arc-track{stroke:#2a3d5c}[data-theme=dark] .home-count-arc-fill{stroke:var(--tint-ink)}[data-theme=dark] button.home-count-gauge:focus-visible{outline-color:var(--tint-ink)}[data-theme=dark] .home-subject-card,[data-theme=dark] .home-subject-icon{color:#bfdbfe}[data-theme=dark] .module-sheet-lesson,[data-theme=dark] .module-sheet-shortcut{background:var(--tint);color:var(--tint-ink)}[data-theme=dark] .module-sheet-lesson:hover,[data-theme=dark] .module-sheet-shortcut:hover{background:var(--tint-hover)}[data-theme=dark] .qz-explain{background:var(--tint)}[data-theme=dark] .qz-explain-label{color:var(--tint-ink)}[data-theme=dark] .premium-plan-card{background:color-mix(in srgb, var(--text) 5.5%, var(--surface))}[data-theme=dark] .premium-plan-card.is-active{background:color-mix(in srgb, var(--premium-accent,var(--link)) 16%, var(--surface))}[data-theme=dark] .premium-plan-check{background:color-mix(in srgb, var(--text) 10%, var(--surface))}[data-theme=dark] .premium-modal-check{background:color-mix(in srgb, var(--premium-accent,var(--link)) 18%, var(--surface))}[data-theme=dark] .profile-chart-avg span{background:color-mix(in srgb, var(--profile-accent,#5aa9f0) 22%, var(--surface));color:color-mix(in srgb, var(--profile-accent,#5aa9f0) 55%, #fff)}[data-theme=dark] .profile-confirm{--profile-ink:#9cc0f5}[data-theme=dark] .premium-required-cta,[data-theme=dark] .app-error-modal-retry,[data-theme=dark] .watch-title-meta{color:var(--link)}[data-theme=dark] .app-error-modal-title{color:var(--text)}[data-theme=dark] .ex-badge.is-premium{color:#fbbf24}[data-theme=dark] .qz-card-done,[data-theme=dark] .qz-card-score{color:#4ade80}[data-theme=dark] .lessons-md-intro .lesson-intro-list-inner li{color:#5aa9f0}[data-theme=dark] .lessons-md-intro .lesson-intro-list-inner li::marker{color:#5aa9f0}[data-theme=dark] .lessons-md-intro .lesson-intro-list-inner li:hover{color:#7ebcf3}[data-theme=dark] .feed-error,[data-theme=dark] .profile-auth-error{color:#f87171}[data-theme=dark] .profile-auth-info{color:#bfdbfe}[data-theme=dark] .profile-signout{background:color-mix(in srgb, #ef4444 14%, var(--surface));color:#f87171}[data-theme=dark] .profile-signout:hover{background:color-mix(in srgb, #ef4444 22%, var(--surface))}[data-theme=dark] .ex-reader .extract-text,[data-theme=dark] .ex-reader .extract-render,[data-theme=dark] .extract-text,[data-theme=dark] .extract-render{background:var(--surface);color:var(--text);border-color:var(--border)}[data-theme=dark] .extract-render-exercise .extract-part{border-bottom-color:var(--border);color:var(--text)}[data-theme=dark] .extract-render h1,[data-theme=dark] .extract-render h2,[data-theme=dark] .extract-render h3,[data-theme=dark] .extract-render h4,[data-theme=dark] .extract-render h5,[data-theme=dark] .extract-render h6,[data-theme=dark] .extract-read .extract-render h1,[data-theme=dark] .extract-read .extract-render h2,[data-theme=dark] .extract-read .extract-render h3,[data-theme=dark] .extract-read .extract-render h4,[data-theme=dark] .extract-read .extract-render h5,[data-theme=dark] .extract-read .extract-render h6{color:var(--text)}[data-theme=dark] .extract-render .extract-list-marker{color:var(--muted)}[data-theme=dark] .extract-render .extract-question-has-ref>.extract-list-marker.extract-question-ref{background:var(--chip)}[data-theme=dark] .extract-render th,[data-theme=dark] .extract-render td{border-color:var(--border);color:var(--text)}[data-theme=dark] .auth-page{--c-ink:#e6edfb;--c-text:#b4c2dc;--c-pale:#1b2a45;--c-pale-line:#2f4268;--c-shadow:#0f1b33;background:#12306b}[data-theme=dark] .auth-panel-inner{background:#142039}[data-theme=dark] .auth-tabs,[data-theme=dark] .auth-field input,[data-theme=dark] .auth-field input:focus{background:#1b2a45}[data-theme=dark] .auth-google{background:linear-gradient(#243759,#1b2a45);border-color:#2f4268;box-shadow:0 .2rem #0f1b33}[data-theme=dark] .auth-google:active:not(:disabled){box-shadow:0 .1rem #0f1b33}[data-theme=dark] .auth-error{color:#fca5a5;background:#3a1d1d}[data-theme=dark] .auth-info,[data-theme=dark] .auth-link{color:#9cc0f5}[data-theme=dark] .fc-face,[data-theme=dark] .acc-locked-card{background:var(--surface)}[data-theme=dark] .fc-card.is-known .fc-front{background:color-mix(in srgb, #16a34a 14%, var(--surface))}[data-theme=dark] .lesson-acc-slot{--acc-ink:#c9ddfb;background:color-mix(in srgb, var(--acc) 10%, var(--surface))}[data-theme=dark] .lesson-acc-cta{box-shadow:none}[data-theme=dark] .fc-face-label{color:#a9c6f0;background:#1c2d4d}[data-theme=dark] .fc-back{background:#17336b}[data-theme=dark] .fc-btn-review{background:color-mix(in srgb, #f0766a 16%, var(--surface));color:#f0766a}[data-theme=dark] .fc-actions .fc-btn-known{color:#fff;background:#16a34a;border-color:#0000}[data-theme=dark] .fc-actions .fc-btn-known:hover{background:#15803d}