.study-workspace .lecture-media-shell.study-media-player{max-width:min(100%,calc((100dvh - 230px) * 1.77778))}.study-workspace .video-js.vjs-theme-study{--player-controls-height:92px;font:14px/1.4 Gilroy,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--lecture-text);background:#000;user-select:none}.study-workspace .lecture-media-shell .vjs-theme-study iframe.vjs-tech,.study-workspace .vjs-theme-study .vjs-poster,.study-workspace .vjs-theme-study .vjs-tech{height:100%!important}.study-workspace .vjs-theme-study .vjs-text-track-display{bottom:var(--player-controls-height)}.study-workspace .vjs-theme-study .vjs-control-bar{display:flex;align-items:center;height:var(--player-controls-height);padding:40px 12px 8px;gap:2px;background:linear-gradient(to top,rgb(3 7 16 / .88),rgb(3 7 16 / .5) 60%,transparent);border:0;border-radius:0 0 12px 12px;opacity:1;visibility:visible;transition:opacity 180ms ease-out,transform 180ms ease-out;font-size:14px;z-index:2}.study-workspace .vjs-theme-study.vjs-user-inactive.vjs-playing .vjs-control-bar{opacity:1;visibility:visible}.study-workspace .vjs-theme-study.vjs-user-inactive.vjs-playing .vjs-control-bar:not(:hover):not(:has(:focus-visible)):not(:has(.vjs-lock-showing)){opacity:0;transform:translateY(6px);pointer-events:none}.study-workspace .vjs-theme-study.vjs-user-inactive.vjs-playing .vjs-text-track-display{bottom:12px}.study-workspace .vjs-theme-study.vjs-user-inactive.vjs-playing:has(.vjs-control-bar:hover,.vjs-control-bar :focus-visible,.vjs-lock-showing) .vjs-text-track-display{bottom:var(--player-controls-height)}.study-workspace .vjs-theme-study.vjs-user-inactive:has(.vjs-control-bar:hover,.vjs-control-bar :focus-visible,.vjs-lock-showing){cursor:auto}.study-workspace .vjs-theme-study .vjs-control{width:44px;height:44px;flex:0 0 auto}.study-workspace .vjs-theme-study button{border:1px solid transparent;border-radius:8px;color:#fff;background:0 0;outline:0;box-shadow:none;text-shadow:0 1px 3px rgb(0 0 0 / .6);-webkit-tap-highlight-color:transparent;transition:background-color var(--lecture-motion),color var(--lecture-motion),border-color var(--lecture-motion)}.study-workspace .vjs-theme-study button:hover{background:rgb(255 255 255 / .14);color:#fff}.study-workspace .vjs-theme-study .vjs-menu-item:focus-visible,.study-workspace .vjs-theme-study [role=slider]:focus-visible,.study-workspace .vjs-theme-study button:focus-visible{outline:0;box-shadow:inset 0 0 0 1px var(--lecture-focus)}.study-workspace .vjs-theme-study button:active{background:var(--lecture-selected)}.study-workspace .vjs-theme-study button:disabled{opacity:.45;cursor:not-allowed}.study-workspace .vjs-theme-study .vjs-icon-placeholder{display:grid;place-items:center;height:100%}.video-js .study-player-icon::before{display:none}.study-player-icon svg{width:24px;height:24px;display:block;pointer-events:none}.study-workspace .vjs-theme-study .study-player-contract,.study-workspace .vjs-theme-study .study-player-muted,.study-workspace .vjs-theme-study .study-player-pause,.study-workspace .vjs-theme-study .study-player-replay{display:none}.study-workspace .vjs-theme-study .vjs-playing .study-player-play,.study-workspace .vjs-theme-study.vjs-ended .vjs-play-control .study-player-play{display:none}.study-workspace .vjs-theme-study .vjs-playing .study-player-pause,.study-workspace .vjs-theme-study.vjs-ended .vjs-play-control .study-player-replay{display:block}.study-workspace .vjs-theme-study .vjs-vol-0 .study-player-volume,.study-workspace .vjs-theme-study.vjs-fullscreen .study-player-expand{display:none}.study-workspace .vjs-theme-study .vjs-vol-0 .study-player-muted,.study-workspace .vjs-theme-study.vjs-fullscreen .study-player-contract{display:block}.study-workspace .vjs-theme-study .study-player-time{display:flex;align-items:center;gap:5px;padding:0 6px;font-variant-numeric:tabular-nums;white-space:nowrap;text-shadow:0 1px 3px rgb(0 0 0 / .75)}.study-workspace .vjs-theme-study .vjs-time-control{display:block;width:auto;height:auto;min-width:0;padding:0;font-size:13px;line-height:1.4}.study-workspace .vjs-theme-study .vjs-current-time{color:var(--lecture-text);font-weight:700}.study-workspace .vjs-theme-study :is(.vjs-duration,.vjs-time-divider){color:#e0e4ef}.study-workspace .vjs-theme-study .vjs-picture-in-picture-control,.study-workspace .vjs-theme-study .vjs-remaining-time{display:none}.study-workspace .vjs-theme-study .vjs-custom-control-spacer{display:block;flex:1 1 auto;width:auto;min-width:0}.study-workspace .vjs-theme-study .vjs-volume-panel{width:44px;height:44px;margin:0}.study-workspace .vjs-theme-study .vjs-volume-panel.vjs-volume-panel-horizontal:focus-within,.study-workspace .vjs-theme-study .vjs-volume-panel.vjs-volume-panel-horizontal:hover{width:124px}.study-workspace .vjs-theme-study .vjs-volume-control.vjs-volume-horizontal{height:44px}.study-workspace .vjs-theme-study .vjs-volume-bar{margin:20px 6px;width:64px;height:4px}.study-workspace .vjs-theme-study .vjs-volume-level{background:var(--lecture-accent);height:4px}.study-workspace .vjs-theme-study .vjs-volume-level::before{content:"";width:10px;height:10px;border-radius:50%;background:var(--lecture-text);top:50%;right:-5px;transform:translateY(-50%)}.study-workspace .vjs-theme-study .vjs-progress-control{position:absolute;inset:14px 16px auto;height:28px;width:auto}.study-workspace .vjs-theme-study .vjs-progress-holder{margin:0;height:4px;border-radius:4px;background:rgb(255 255 255 / .3)}.study-workspace .vjs-theme-study .vjs-progress-control:focus-within .vjs-progress-holder,.study-workspace .vjs-theme-study .vjs-progress-control:hover .vjs-progress-holder{height:6px;font-size:inherit}.study-workspace .vjs-theme-study .vjs-load-progress{background:var(--lecture-text-muted);opacity:.35;border-radius:inherit}.study-workspace .vjs-theme-study .vjs-load-progress div{background:0 0}.study-workspace .vjs-theme-study .vjs-play-progress{background:var(--lecture-accent);border-radius:inherit}.study-workspace .vjs-theme-study .vjs-play-progress::before{content:"";width:10px;height:10px;border-radius:50%;background:var(--lecture-text);top:50%;right:-5px;transform:translateY(-50%)}.study-workspace .vjs-theme-study .vjs-time-tooltip{background:var(--lecture-surface-raised);color:var(--lecture-text);font:700 12px/1.4 Gilroy,sans-serif;padding:5px 7px}.study-workspace .vjs-theme-study .vjs-progress-control .vjs-play-progress .vjs-time-tooltip{display:none}.study-workspace .vjs-theme-study .vjs-playback-rate-value{font-size:14px;font-weight:700;line-height:44px}.study-workspace .vjs-theme-study .vjs-menu-button-popup .vjs-menu{bottom:100%;margin:0;padding-bottom:8px;height:auto;left:auto;right:0;width:132px;font-size:14px}.study-workspace .vjs-theme-study .vjs-menu-button-popup .vjs-menu-content{position:relative;bottom:auto;max-height:min(320px,40vh);border:0;border-radius:12px;background:rgb(12 16 29 / .96);box-shadow:0 8px 24px rgb(0 0 0 / .3);padding:5px}.study-workspace .vjs-theme-study .vjs-menu-item{font-size:14px;line-height:1.4;padding:9px 12px;min-height:38px;border-radius:8px;text-align:left;color:var(--lecture-text-soft);text-transform:none}.study-workspace .vjs-theme-study .vjs-menu-item:hover{background:var(--lecture-surface-raised);color:var(--lecture-text)}.study-workspace .vjs-theme-study .vjs-menu-item.vjs-selected{background:var(--lecture-selected);color:var(--lecture-selected-text);font-weight:700}.study-workspace .vjs-theme-study .vjs-youtube-captions-toggle[aria-pressed=true]{color:var(--lecture-accent);background:var(--lecture-accent-dark)}.study-workspace .vjs-theme-study .vjs-youtube-captions-toggle[aria-busy=true]{border-color:var(--lecture-selected-border);color:var(--lecture-selected-text)}.study-workspace .vjs-theme-study .vjs-youtube-captions-toggle[aria-pressed=true]::after{content:"";position:absolute;width:4px;height:4px;border-radius:50%;bottom:3px;left:calc(50% - 2px);background:currentColor}.study-workspace .lecture-media-shell .vjs-theme-study .vjs-big-play-button,.study-workspace .lecture-media-shell .vjs-theme-study:hover .vjs-big-play-button{left:50%;top:50%;width:68px;height:68px;margin:-34px 0 0 -34px;border:1px solid rgb(255 255 255 / .4);border-radius:50%;background:rgb(3 7 16 / .55)!important;color:#fff!important;box-shadow:0 4px 16px rgb(0 0 0 / .2);transform:none!important;z-index:3}.study-workspace .vjs-theme-study .vjs-big-play-button:hover{border-color:var(--lecture-focus)}.study-workspace .vjs-theme-study .vjs-loading-spinner{top:50%;width:40px;height:40px;margin:-20px 0 0 -20px;border-width:3px}.study-workspace .vjs-theme-study .vjs-loading-spinner::after,.study-workspace .vjs-theme-study .vjs-loading-spinner::before{border-top-color:var(--lecture-accent)}.study-workspace .vjs-theme-study .study-youtube-surface{position:absolute;inset:0;visibility:visible;z-index:1;cursor:inherit}.study-workspace .vjs-theme-study .vjs-iframe-blocker{display:none!important}.study-workspace .vjs-theme-study.vjs-controls-disabled .study-youtube-surface,.study-workspace .vjs-theme-study.vjs-error .study-youtube-surface{display:none}.study-workspace .vjs-theme-study .vjs-error-display{z-index:4}@media (max-width:639px){.study-workspace .lecture-media-shell.study-media-player{max-width:100%}.study-workspace .vjs-theme-study .vjs-control-bar{padding-inline:6px;gap:0}.study-workspace .vjs-theme-study .vjs-volume-panel.vjs-volume-panel-horizontal:focus-within,.study-workspace .vjs-theme-study .vjs-volume-panel.vjs-volume-panel-horizontal:hover{width:44px}.study-workspace .vjs-theme-study .vjs-volume-control.vjs-volume-horizontal{position:absolute;left:0;bottom:44px;background:var(--lecture-bg-deep);border-radius:8px}.study-workspace .vjs-theme-study .study-player-time{flex-direction:column;align-items:flex-start;gap:0;padding-inline:4px;min-width:70px}.study-workspace .vjs-theme-study .vjs-time-divider{display:none}.study-workspace .vjs-theme-study .vjs-progress-control{inset-inline:12px}.study-workspace .vjs-theme-study .vjs-menu-button-popup .vjs-menu-content{max-height:min(160px,32vw)}}@media (max-width:359px){.study-workspace .vjs-theme-study .vjs-control-bar{padding-inline:4px}.study-workspace .vjs-theme-study .study-player-time{min-width:60px;padding-inline:2px}}@media (prefers-reduced-motion:reduce){.study-workspace .vjs-theme-study *{transition:none!important;animation:none!important}}@media (forced-colors:active){.study-workspace .vjs-theme-study button:focus-visible{outline:2px solid Highlight}.study-workspace .vjs-theme-study .vjs-play-progress{background:Highlight}}.study-workspace .vjs-theme-study.no_video{background:var(--lecture-bg-deep)!important}.study-workspace .vjs-theme-study .procesing_con{position:absolute;inset:0;display:grid;place-items:center;text-align:center;padding:24px}.study-workspace .vjs-theme-study .procesing_con p{font-size:15px}
