.spinner{display:inline-flex;color:var(--color-text-muted)}.spinner svg{width:100%;height:100%;animation:spinner-turn .8s linear infinite}.spinner--sm{width:1rem;height:1rem}.spinner--md{width:1.5rem;height:1.5rem}.spinner--lg{width:2.5rem;height:2.5rem}.spinner__track,.spinner__arc{fill:none;stroke-width:3}.spinner__track{stroke:currentColor;opacity:.2}.spinner__arc{stroke:currentColor;stroke-linecap:round;stroke-dasharray:18 60}@keyframes spinner-turn{to{transform:rotate(360deg)}}@media (prefers-reduced-motion: reduce){.spinner svg{animation:spinner-turn 2.4s linear infinite!important}}.button{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);min-height:var(--tap-target);padding:0 var(--space-5);border:1px solid transparent;border-radius:var(--radius-md);font-size:var(--text-base);font-weight:var(--weight-medium);line-height:1;cursor:pointer;transition:background var(--transition),border-color var(--transition),color var(--transition),transform var(--transition)}.button--sm{min-height:2.25rem;padding:0 var(--space-4);font-size:var(--text-sm)}.button--full{display:flex;width:100%}.button--primary{background:var(--color-accent);color:var(--color-on-accent)}.button--primary:hover:not(:disabled){background:var(--color-accent-hover)}.button--secondary{background:var(--color-accent-soft);color:var(--color-text)}.button--secondary:hover:not(:disabled){background:var(--color-border)}.button--ghost{background:transparent;color:var(--color-text)}.button--ghost:hover:not(:disabled){background:var(--color-accent-soft)}.button--danger{background:var(--color-danger);color:#fff}.button--danger:hover:not(:disabled){filter:brightness(.92)}.button:active:not(:disabled){transform:translateY(1px)}.button:disabled{cursor:not-allowed;opacity:.45}.button--loading{cursor:progress;opacity:.85}.button--loading .spinner{color:currentColor}.dialog{width:min(28rem,calc(100% - var(--space-5)));max-height:calc(100% - var(--space-5));padding:0;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-3);color:var(--color-text)}.dialog::backdrop{background:var(--color-scrim)}.dialog[open]{animation:dialog-in .16s ease-out}.dialog__panel{display:grid;gap:var(--space-4);padding:var(--space-5)}.dialog__title{font-size:var(--text-xl)}.dialog__body{color:var(--color-text-muted);line-height:var(--leading-relaxed)}.dialog__actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:var(--space-3);padding-top:var(--space-2)}@media (max-width: 30rem){.dialog__actions>*{flex:1 1 100%}}@keyframes dialog-in{0%{opacity:0;transform:translateY(8px)}}.toast-region{position:fixed;right:var(--space-4);bottom:var(--space-4);left:var(--space-4);z-index:100;display:grid;justify-items:end;gap:var(--space-2);margin:0;padding:0;list-style:none;pointer-events:none}.toast{display:flex;align-items:flex-start;gap:var(--space-3);width:min(26rem,100%);padding:var(--space-3);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-2);pointer-events:auto;animation:toast-in .18s ease-out}.toast:before{flex:none;width:.5rem;height:.5rem;margin-top:.85rem;border-radius:50%;background:var(--color-text-muted);content:""}.toast--success:before{background:var(--color-success)}.toast--error:before{background:var(--color-danger)}.toast__message{flex:1;padding-top:.45rem;font-size:var(--text-sm);line-height:var(--leading-normal)}.toast__close{display:grid;flex:none;place-items:center;width:2rem;height:2rem;background:transparent;border:0;border-radius:var(--radius-sm);color:var(--color-text-muted);cursor:pointer;transition:background var(--transition),color var(--transition)}.toast__close:hover{background:var(--color-surface-sunken);color:var(--color-text)}.toast__close svg{width:1rem;height:1rem;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round}@keyframes toast-in{0%{opacity:0;transform:translateY(8px)}}.checkbox{position:relative;display:inline-flex;align-items:center;gap:var(--space-3);min-height:var(--tap-target);cursor:pointer}.checkbox__input{position:absolute;width:1.25rem;height:1.25rem;margin:0;opacity:0;cursor:inherit}.checkbox__box{display:grid;flex:none;place-items:center;width:1.25rem;height:1.25rem;background:var(--color-surface);border:1.5px solid var(--color-border-strong);border-radius:var(--radius-sm);transition:background var(--transition),border-color var(--transition),box-shadow var(--transition)}.checkbox__box svg{width:.875rem;height:.875rem;fill:none;stroke:var(--color-on-accent);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;opacity:0}.checkbox:hover .checkbox__input:not(:disabled)+.checkbox__box{border-color:var(--color-text-muted)}.checkbox__input:checked+.checkbox__box{background:var(--color-accent);border-color:var(--color-accent)}.checkbox__input:checked+.checkbox__box svg{opacity:1}.checkbox__input:focus-visible+.checkbox__box{outline:2px solid var(--color-focus);outline-offset:2px}.checkbox__input[aria-invalid=true]+.checkbox__box{border-color:var(--color-danger)}.checkbox__input:disabled+.checkbox__box{background:var(--color-surface-sunken);border-color:var(--color-border)}.checkbox__input:disabled:checked+.checkbox__box{background:var(--color-border-strong)}.checkbox__input:disabled~.checkbox__label{color:var(--color-text-muted)}.checkbox:has(.checkbox__input:disabled){cursor:not-allowed}.telegram-login{display:flex;flex-direction:column;gap:var(--space-3);margin-bottom:var(--space-5)}.telegram-login__error{margin:0;color:var(--color-danger);font-size:var(--text-sm)}.telegram-icon{flex:none}._shell_1ecrd_1{display:flex;flex-direction:column;min-height:100vh;min-height:100dvh}._shellSigned_1ecrd_8{display:grid;grid-template-columns:var(--sidebar-width) minmax(0,1fr)}._column_1ecrd_13{display:flex;flex-direction:column;min-width:0;min-height:100vh;min-height:100dvh}._sidebar_1ecrd_21{position:sticky;top:0;display:flex;flex-direction:column;gap:var(--space-6);height:100vh;height:100dvh;padding:var(--space-5) var(--space-3);border-right:1px solid var(--color-border)}._sidebar_1ecrd_21 ._logo_1ecrd_33{padding:0 var(--space-3)}._sideNav_1ecrd_37{display:grid;gap:2px}._header_1ecrd_42{display:flex;align-items:center;justify-content:space-between;gap:var(--space-4);width:100%;max-width:calc(var(--content-width) + var(--space-6) * 2);height:var(--bar-height);margin:0 auto;padding:0 var(--space-6)}._shellSigned_1ecrd_8 ._header_1ecrd_42{display:none}._logo_1ecrd_33{text-decoration:none}._navLink_1ecrd_62{display:flex;align-items:center;min-height:2.25rem;padding:0 var(--space-3);border-radius:var(--radius-md);color:var(--color-text-muted);font-size:var(--text-base);text-decoration:none;transition:background var(--transition),color var(--transition)}._navLink_1ecrd_62:hover{color:var(--color-text)}._navLinkActive_1ecrd_78,._navLinkActive_1ecrd_78:hover{background:var(--color-accent-soft);color:var(--color-text);font-weight:var(--weight-medium)}._user_1ecrd_85{display:grid;gap:var(--space-1);margin-top:auto;padding:0 var(--space-3);font-size:var(--text-sm)}._userName_1ecrd_93{overflow:hidden;font-weight:var(--weight-medium);text-overflow:ellipsis;white-space:nowrap}._textButton_1ecrd_100{justify-self:start;padding:0;border:0;background:none;color:var(--color-text-muted);cursor:pointer;font-size:var(--text-sm);text-decoration:none}._textButton_1ecrd_100:hover{color:var(--color-text);text-decoration:underline}._main_1ecrd_116{flex:1;width:100%;max-width:calc(var(--content-width) + var(--space-6) * 2);margin:0 auto;padding:var(--space-6) var(--space-6) var(--space-7)}._footer_1ecrd_124{width:100%;max-width:calc(var(--content-width) + var(--space-6) * 2);margin:0 auto;padding:0 var(--space-6);color:var(--color-text-muted);font-size:var(--text-sm)}._footerInner_1ecrd_133{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--space-3);padding:var(--space-4) 0 var(--space-5);border-top:1px solid var(--color-border)}._legalLinks_1ecrd_143{display:flex;flex-wrap:wrap;gap:var(--space-2) var(--space-4);margin:0;padding:0;list-style:none}._legalLinks_1ecrd_143 a{color:inherit;text-decoration:none}._legalLinks_1ecrd_143 a:hover{color:var(--color-text);text-decoration:underline}._bottomNav_1ecrd_162{display:none}@media (max-width: 860px){._shellSigned_1ecrd_8{display:flex;padding-bottom:calc(var(--bar-height) + env(safe-area-inset-bottom))}._sidebar_1ecrd_21{display:none}._shellSigned_1ecrd_8 ._header_1ecrd_42{display:flex}._header_1ecrd_42{padding:0 var(--space-4)}._main_1ecrd_116{padding:var(--space-4) var(--space-4) var(--space-6)}._footer_1ecrd_124{padding:0 var(--space-4)}._bottomNav_1ecrd_162{position:fixed;right:0;bottom:0;left:0;z-index:10;display:flex;padding-bottom:env(safe-area-inset-bottom);background:var(--color-surface);border-top:1px solid var(--color-border)}._bottomNav_1ecrd_162 ._navLink_1ecrd_62{flex:1 1 0;justify-content:center;min-width:0;padding:0 var(--space-1);font-size:var(--text-sm);white-space:nowrap;height:var(--bar-height);border-radius:0}._bottomNav_1ecrd_162 ._navLinkActive_1ecrd_78,._bottomNav_1ecrd_162 ._navLinkActive_1ecrd_78:hover{background:transparent;box-shadow:inset 0 2px 0 var(--color-text)}}.cookie-notice{position:fixed;right:var(--space-4);bottom:var(--space-4);left:var(--space-4);z-index:20;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--space-3) var(--space-5);max-width:44rem;margin:0 auto;padding:var(--space-3) var(--space-4);background:var(--color-surface);border:1px solid var(--color-border-strong);border-radius:var(--radius-lg);box-shadow:var(--shadow-2);font-size:var(--text-sm)}.cookie-notice__text{flex:1 1 18rem}@media (max-width: 860px){.cookie-notice{bottom:calc(var(--bar-height) + var(--space-3) + env(safe-area-inset-bottom))}}.tabs{display:grid;gap:var(--space-4)}.tabs__list{display:flex;gap:var(--space-1);overflow-x:auto;border-bottom:1px solid var(--color-border);scrollbar-width:none}.tabs__tab{flex:none;min-height:var(--tap-target);padding:0 var(--space-4);margin-bottom:-1px;background:transparent;border:0;border-bottom:2px solid transparent;color:var(--color-text-muted);font-weight:var(--weight-medium);cursor:pointer;transition:color var(--transition),border-color var(--transition),background var(--transition)}.tabs__tab:hover{color:var(--color-text);background:var(--color-surface-sunken)}.tabs__tab[aria-selected=true]{color:var(--color-text);border-bottom-color:var(--color-text)}.tabs__tab:focus-visible{outline-offset:-2px}.tabs__panel{line-height:var(--leading-relaxed)}.field{display:grid;gap:var(--space-2)}.field__label{font-size:var(--text-sm);font-weight:var(--weight-medium)}.field__hint,.field__error{font-size:var(--text-sm);line-height:var(--leading-normal)}.field__hint{color:var(--color-text-muted)}.field__error{color:var(--color-danger)}.progress{display:grid;gap:var(--space-2)}.progress__head{display:flex;align-items:baseline;justify-content:space-between;gap:var(--space-3);font-size:var(--text-sm)}.progress__label{font-weight:var(--weight-medium)}.progress__value{font-variant-numeric:tabular-nums;color:var(--color-text-muted)}.progress__track{position:relative;height:.375rem;overflow:hidden;background:var(--color-surface-sunken);border-radius:var(--radius-pill)}.progress__bar{height:100%;background:var(--color-data);border-radius:var(--radius-pill);transition:width .24s ease}.progress__track--indeterminate .progress__bar{position:absolute;width:40%;animation:progress-slide 1.2s ease-in-out infinite}@keyframes progress-slide{0%{left:-40%}to{left:100%}}.input{width:100%;min-height:var(--tap-target);padding:0 var(--space-4);background:var(--color-surface);border:1px solid var(--color-border-strong);border-radius:var(--radius-md);color:var(--color-text);font:inherit;transition:border-color var(--transition),box-shadow var(--transition),background var(--transition)}.input::placeholder{color:var(--color-text-muted);opacity:.8}.input:hover:not(:disabled){border-color:var(--color-text-muted)}.input:focus-visible{outline:none;border-color:var(--color-text);box-shadow:0 0 0 3px var(--color-accent-soft)}.input[aria-invalid=true]{border-color:var(--color-danger)}.input[aria-invalid=true]:focus-visible{box-shadow:0 0 0 3px color-mix(in srgb,var(--color-danger) 25%,transparent)}.input:disabled{background:var(--color-surface-sunken);border-color:var(--color-border);color:var(--color-text-muted);cursor:not-allowed}.add-lecture{color:var(--color-text);line-height:var(--leading-normal)}.add-lecture__form,.add-lecture__upload{display:grid;gap:var(--space-4)}.add-lecture__drop{position:relative;display:grid;gap:var(--space-1);align-content:center;min-height:7.5rem;padding:var(--space-5);background:var(--color-surface-sunken);border:1px solid var(--color-border-strong);border-radius:var(--radius-lg);cursor:pointer;transition:border-color var(--transition),background var(--transition)}.add-lecture__drop:hover,.add-lecture__drop--active{border-color:var(--color-border-strong)}.add-lecture__drop--active{background:var(--color-data-soft);border-color:var(--color-data)}.add-lecture__drop:focus-within{border-color:var(--color-focus)}.add-lecture__input{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;opacity:0;cursor:pointer}.add-lecture__input[aria-invalid=true]+.add-lecture__drop-title{color:var(--color-danger)}.add-lecture__drop-title{font-size:var(--text-lg);font-weight:var(--weight-semibold);overflow-wrap:anywhere}.add-lecture__drop-hint{color:var(--color-text-muted);font-size:var(--text-sm)}.add-lecture__file-name{font-weight:var(--weight-semibold);overflow-wrap:anywhere}.add-lecture__note{color:var(--color-text-muted);font-size:var(--text-sm)}.add-lecture__error{color:var(--color-danger);font-size:var(--text-sm)}.add-lecture__course{display:grid;gap:var(--space-2)}.add-lecture__select{-webkit-appearance:auto;-moz-appearance:auto;appearance:auto;cursor:pointer}.add-lecture__text-button{padding:0;background:none;border:0;color:var(--color-text);font:inherit;text-decoration:underline;cursor:pointer}.add-lecture__audio-only{display:flex;align-items:center;gap:var(--space-2)}.quota-plan{display:grid;gap:var(--space-4);color:var(--color-text);line-height:var(--leading-normal)}.quota-plan__lead strong{font-weight:var(--weight-semibold);font-variant-numeric:tabular-nums}.quota-plan__status{display:flex;flex-wrap:wrap;align-items:center;gap:var(--space-3);color:var(--color-text-muted)}.quota-plan__alert{color:var(--color-danger)}.quota-plan__empty{display:grid;gap:var(--space-2)}.quota-plan__empty p{color:var(--color-text-muted)}.quota-plan__meter{display:grid;gap:var(--space-2);font-size:var(--text-sm)}.quota-plan__meter-head{display:flex;flex-wrap:wrap;justify-content:space-between;gap:var(--space-1) var(--space-3);font-variant-numeric:tabular-nums;font-weight:var(--weight-medium)}.quota-plan__meter-note{color:var(--color-text-muted);font-weight:var(--weight-regular)}.quota-plan__meter--over .quota-plan__meter-note{color:var(--color-danger);font-weight:var(--weight-medium)}.quota-plan__track{height:.5rem;overflow:hidden;background:var(--color-surface-sunken);border-radius:var(--radius-pill)}.quota-plan__fill{height:100%;background:var(--color-data);border-radius:var(--radius-pill);transition:width .2s ease,background var(--transition)}.quota-plan__meter--over .quota-plan__fill{background:var(--color-danger)}.quota-plan__list{display:grid;gap:2px;max-height:min(18rem,40vh);margin:0;padding:0;overflow-y:auto;list-style:none}.quota-plan__row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:var(--space-2);padding:0 var(--space-3) 0 var(--space-1);background:var(--color-surface-sunken);border-radius:var(--radius-md);transition:background var(--transition),box-shadow var(--transition)}.quota-plan__row--selected{background:var(--color-data-soft)}.quota-plan__row--dragging{position:relative;z-index:1;box-shadow:var(--shadow-2)}.quota-plan__handle{display:grid;place-items:center;width:2rem;height:var(--tap-target);padding:0;border:0;border-radius:var(--radius-sm);background:none;color:var(--color-text-muted);cursor:grab;touch-action:none}.quota-plan__row--dragging .quota-plan__handle{cursor:grabbing}.quota-plan__handle:hover:not(:disabled){color:var(--color-text)}.quota-plan__handle:focus-visible{outline:2px solid var(--color-focus);outline-offset:-2px}.quota-plan__handle:disabled{cursor:default;opacity:.5}.quota-plan__handle svg{width:1rem;height:1rem;fill:currentColor}.quota-plan__check{min-width:0;padding:var(--space-2) 0}.quota-plan__text{display:grid;min-width:0}.quota-plan__title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.quota-plan__state{color:var(--color-text-muted);font-size:var(--text-sm)}.quota-plan__duration{font-variant-numeric:tabular-nums;font-size:var(--text-sm);text-align:right}.quota-plan__sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.quota-plan__options{display:grid;gap:var(--space-3);padding-top:var(--space-2)}.quota-plan__options h3{font-size:var(--text-base)}.quota-plan__options ul{display:grid;gap:var(--space-3);margin:0;padding:0;list-style:none;font-size:var(--text-sm)}.quota-plan__options li{display:grid;gap:2px;color:var(--color-text-muted)}.quota-plan__option-title{color:var(--color-text);font-weight:var(--weight-medium)}.quota-plan__options a{justify-self:start;margin-top:var(--space-1);font-weight:var(--weight-medium)}.quota-plan__options .quota-plan__local{gap:var(--space-1);margin-top:var(--space-1)}.quota-plan__local a{display:inline-block;margin-top:0;padding-block:var(--space-1);overflow-wrap:anywhere}.waiting-notice{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--space-3);margin-bottom:var(--space-5);padding:var(--space-3) var(--space-4);background:var(--color-surface-sunken);border-radius:var(--radius-lg)}.waiting-notice strong{font-weight:var(--weight-semibold)}@media (max-width: 30rem){.waiting-notice .button{flex:1 1 100%}.quota-plan__row{grid-template-columns:auto minmax(0,1fr)}.quota-plan__duration{grid-column:2;padding:0 0 var(--space-2) calc(1.25rem + var(--space-3));text-align:left}}.logo{display:inline-flex;align-items:center;gap:.5em;font-weight:var(--weight-semibold);letter-spacing:-.03em;line-height:1;color:var(--color-text)}.logo--md{font-size:var(--text-xl)}.logo--lg{font-size:var(--text-3xl)}.logo__mark{width:1em;height:1em;flex:none}.logo__mark rect{fill:var(--color-text)}.logo__mark .logo__accent{fill:var(--color-data)}.theme-toggle{display:inline-flex;padding:3px;gap:2px;background:var(--color-surface-sunken);border-radius:var(--radius-md)}.theme-toggle__option{min-height:2rem;padding:0 var(--space-3);background:transparent;border:0;border-radius:var(--radius-sm);color:var(--color-text-muted);font-size:var(--text-sm);font-weight:var(--weight-medium);cursor:pointer;transition:background var(--transition),color var(--transition)}.theme-toggle__option:hover{color:var(--color-text)}.theme-toggle__option[aria-checked=true]{background:var(--color-surface);color:var(--color-text)}.auth-page{display:grid;grid-template-columns:minmax(0,26rem) minmax(0,1fr);gap:var(--space-8);align-items:start;padding-top:var(--space-6)}.auth{padding-bottom:var(--space-7)}.auth-sample{display:grid;gap:var(--space-3);padding:var(--space-5);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg)}.auth-sample__title{font-weight:var(--weight-semibold)}.auth-sample__list{display:grid;gap:var(--space-1);margin:0;padding:0;list-style:none}.auth-sample__line{display:grid;grid-template-columns:3rem minmax(0,1fr);gap:var(--space-3);padding:var(--space-2) var(--space-3);border-radius:var(--radius-md);font-size:var(--text-sm)}.auth-sample__line--current{background:var(--color-data-soft)}.auth-sample__time{color:var(--color-text-muted);font-variant-numeric:tabular-nums;text-align:right}.auth-sample__line--current .auth-sample__time{color:var(--color-data);font-weight:var(--weight-semibold)}@media (max-width: 860px){.auth-page{grid-template-columns:minmax(0,1fr);gap:var(--space-5);padding-top:var(--space-4)}.auth-sample{display:none}}.auth__title{font-size:var(--text-2xl)}.auth__lead{margin-top:var(--space-2);color:var(--color-text-muted)}.auth__form{display:grid;gap:var(--space-4);margin-top:var(--space-5)}.auth__alert{padding:var(--space-3) var(--space-4);border-radius:var(--radius-md);color:var(--color-danger);background:color-mix(in srgb,var(--color-danger) 10%,transparent);font-size:var(--text-sm)}.auth__row{display:flex;align-items:baseline;justify-content:space-between;gap:var(--space-3);font-size:var(--text-sm)}.auth__divider{display:flex;align-items:center;gap:var(--space-3);margin:var(--space-5) 0 var(--space-4);color:var(--color-text-muted);font-size:var(--text-sm)}.auth__divider:before,.auth__divider:after{flex:1;height:1px;background:var(--color-border);content:""}.auth-social{display:flex;flex-direction:column;gap:var(--space-3)}.auth-telegram{display:flex;justify-content:center;min-height:40px}.auth__footer{margin-top:var(--space-5);color:var(--color-text-muted);font-size:var(--text-sm)}.auth__status{display:flex;align-items:center;gap:var(--space-3);margin-top:var(--space-5)}.auth__actions{display:flex;flex-wrap:wrap;gap:var(--space-3);margin-top:var(--space-5)}.auth__consents{display:grid;gap:var(--space-3)}.empty-state{display:grid;justify-items:start;gap:var(--space-3);padding:var(--space-6);background:var(--color-surface);border:1px solid 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var(--space-2)}.video-player__track{position:relative;height:var(--space-5)}.video-player__rail{position:absolute;top:50%;right:0;left:0;height:4px;overflow:hidden;border-radius:var(--radius-pill);background:var(--color-surface-sunken);transform:translateY(-50%);transition:height var(--transition)}.video-player__track:hover .video-player__rail,.video-player__track:focus-within .video-player__rail{height:6px}.video-player__fill{width:100%;height:100%;background:var(--color-accent);transform-origin:left center}.video-player__seek{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;margin:0;background:transparent;cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none}.video-player__seek:disabled{cursor:default}.video-player__seek::-webkit-slider-runnable-track{height:100%;background:transparent}.video-player__seek::-moz-range-track{background:transparent}.video-player__seek::-webkit-slider-thumb{width:14px;height:14px;margin-top:3px;border:0;border-radius:50%;background:var(--color-accent);-webkit-appearance:none;-moz-appearance:none;appearance:none}.video-player__seek::-moz-range-thumb{width:14px;height:14px;border:0;border-radius:50%;background:var(--color-accent)}.video-player__seek:disabled::-webkit-slider-thumb{visibility:hidden}.video-player__seek:disabled::-moz-range-thumb{visibility:hidden}.video-player__seek:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px;border-radius:var(--radius-sm)}.video-player__bar{display:flex;align-items:center;gap:var(--space-1)}.video-player__button{display:inline-grid;place-items:center;width:var(--tap-target);height:var(--tap-target);padding:0;border:0;border-radius:var(--radius-md);background:transparent;color:var(--color-text);cursor:pointer;transition:background var(--transition)}.video-player__button:hover:not(:disabled){background:var(--color-surface-sunken)}.video-player__button:active:not(:disabled){transform:scale(.94)}.video-player__button:focus-visible{outline:2px solid var(--color-focus);outline-offset:-2px}.video-player__button:disabled{color:var(--color-text-muted);cursor:default}.video-player__time{margin-right:auto;padding-left:var(--space-2);font-size:var(--text-sm);font-variant-numeric:tabular-nums;white-space:nowrap}.video-player__duration{color:var(--color-text-muted)}.video-player__rate{display:inline-flex;align-items:center;gap:var(--space-2);font-size:var(--text-sm)}.video-player__rate-label{color:var(--color-text-muted)}.video-player__rate select{min-height:2.25rem;padding:0 var(--space-2);border:1px solid var(--color-border-strong);border-radius:var(--radius-md);background:var(--color-surface);color:var(--color-text);font:inherit;font-variant-numeric:tabular-nums;cursor:pointer}.video-player__rate select:focus-visible{outline:2px solid var(--color-focus);outline-offset:1px}.video-player--fullscreen{border:0;border-radius:0}.video-player--fullscreen .video-player__screen{flex:1;aspect-ratio:auto;min-height:0}@media (max-width: 480px){.video-player__rate-label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}}@media (prefers-reduced-motion: reduce){.video-player__rail,.video-player__button{transition:none}}.lecture{display:grid;gap:var(--space-5)}.lecture__header{display:grid;gap:var(--space-2)}.lecture__back{justify-self:start;color:var(--color-text-muted);font-size:var(--text-sm);text-decoration:none}.lecture__back:hover{color:var(--color-text);text-decoration:underline}.lecture__title{max-width:42rem;min-width:0;font-size:var(--text-2xl);overflow-wrap:anywhere}.lecture__title-actions{display:flex;flex:0 0 auto;align-items:center;gap:var(--space-2)}.lecture__meta{margin:0;color:var(--color-text-muted);font-size:var(--text-sm);font-variant-numeric:tabular-nums}.lecture__body{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,2fr);align-items:start;gap:var(--space-5)}.lecture__media{position:sticky;top:calc(var(--bar-height) + var(--space-4))}.lecture__panel{display:flex;flex-direction:column;height:min(36rem,calc(100dvh - var(--bar-height) - var(--space-6)));min-height:20rem;overflow:hidden;border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface)}.lecture__panel--empty{height:auto;min-height:0}.lecture__panel .tabs{flex:1;grid-template-rows:auto minmax(0,1fr);gap:0;min-height:0}.lecture__panel .tabs__list{padding:0 var(--space-2)}.lecture__panel .tabs__panel{display:flex;flex-direction:column;min-height:0;overflow:hidden}.lecture__panel .tabs__panel:focus-visible{outline:2px solid var(--color-focus);outline-offset:-2px}.lecture__scroll{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain}.lecture__export{display:flex;flex-wrap:wrap;align-items:center;gap:var(--space-2);margin-top:var(--space-2)}.lecture__export-label{margin-right:var(--space-1);color:var(--color-text-muted);font-size:var(--text-sm)}.processing{display:grid;gap:var(--space-3);max-width:40rem;padding:var(--space-4);border-radius:var(--radius-lg);background:var(--color-surface-sunken)}.processing--failed{background:color-mix(in srgb,var(--color-danger) 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p{margin:0;font-size:var(--text-sm);line-height:var(--leading-normal)}.local-release__description{margin:0;line-height:var(--leading-normal)}.public{display:grid;gap:var(--space-4)}.public__meta{display:flex;flex-wrap:wrap;align-items:center;gap:var(--space-1) var(--space-3);color:var(--color-text-muted);font-size:var(--text-sm);font-variant-numeric:tabular-nums}.public__badge{display:inline-flex;align-items:center;min-height:1.375rem;padding:0 var(--space-2);border-radius:var(--radius-pill);background:var(--color-data-soft);color:var(--color-data);font-size:var(--text-xs);font-weight:var(--weight-medium);white-space:nowrap}.public__report{flex:0 0 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