button.topic-video-button {display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:35px;padding:8px 12px;border:1px solid #83c5d76b;border-radius:7px;background:linear-gradient(120deg,#214c60d9,#122e40e6);color:#d6f3fa;font-size:11px;line-height:1.5;white-space:nowrap;pointer-events:auto;}
button.topic-video-button svg {width:14px;height:14px;flex:none;fill:none;stroke:currentColor;stroke-width:1.5;}
button.topic-video-button:hover {background:#2a566b;border-color:#a9e5ee;color:#fff;}
button.topic-video-button:focus-visible,.topic-video-dialog :is(button,a):focus-visible {outline:2px solid #abdfed;outline-offset:3px;}
button.topic-video-button[hidden] {display:none!important;}
.facts-content .topic-video-facts {display:none;}
.constellation-card-body>.topic-video-button {margin:0 0 16px;}
#black-hole-card-content>.topic-video-button {margin:0 0 18px;}
.topic-video-dialog {padding:0 0 8px;color:#d6e9f4;scrollbar-width:thin;scrollbar-color:#43687b #071423;}
.topic-video-heading {display:flex;align-items:center;justify-content:space-between;gap:20px;padding:6px 0 15px;}
.topic-video-heading h2 {min-width:0;margin:0;font-size:22px;font-weight:500;line-height:1.4;overflow-wrap:anywhere;}
.topic-video-heading>button {flex:none;width:44px;height:44px;background:#11283b;border:1px solid #759fb65c;border-radius:10px;color:#c9e8f3;}
.topic-video-heading>button svg {width:18px;height:18px;}
.topic-video-screen {overflow:hidden;border:1px solid #83b3d343;border-radius:14px;background:#02060c;aspect-ratio:16/9;width:100%;}
.topic-video-screen iframe {display:block;width:100%;height:100%;border:0;}
.topic-video-playlist {display:flex;gap:8px;overflow-x:auto;padding:2px 2px 12px;scrollbar-width:thin;}
.topic-video-playlist[hidden] {display:none;}
.topic-video-playlist button {flex:0 0 auto;max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-height:36px;padding:8px 12px;border-radius:6px;border:1px solid #799eb339;color:#a8c6d6;background:#0a1b2d;}
.topic-video-playlist button[aria-pressed="true"] {border-color:#92d5e581;background:#214357;color:#e4f8fc;}
@media (max-width:760px), (max-width:1000px) and (max-height:600px) and (hover:none) and (pointer:coarse) {
  .facts-content button.topic-video-facts {display:inline-flex;margin:0 0 16px;}
  button.topic-video-button {min-height:44px;font-size:13px;padding:10px 14px;}
  .topic-video-dialog {width:calc(100vw - 24px);max-height:calc(100dvh - 24px - env(safe-area-inset-top,0px) - env(safe-area-inset-bottom,0px));}
  .topic-video-heading {gap:10px;padding-bottom:12px;}
  .topic-video-heading h2 {font-size:18px;}
  .topic-video-screen {border-radius:10px;}
  .topic-video-playlist button {min-height:44px;max-width:220px;}
}