.teaching-slide.slide-helicopter{padding:8px 0;overflow:hidden;container-type:size}
.helicopter-cinema{position:relative;isolation:isolate;flex:1;min-height:0;width:100%;overflow:hidden;border-radius:12px;border:1px solid #a48a51;background:#6b705b}
.helicopter-cinema video{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.helicopter-cinema .helicopter-background{z-index:0;object-fit:cover;filter:blur(30px) opacity(.6);transform:scale(1.12)}
.helicopter-cinema .helicopter-foreground{z-index:1;object-fit:contain;background:transparent}
.helicopter-shade{position:absolute;inset:0;z-index:2;pointer-events:none;background:linear-gradient(to top,#030906ed 0%,#0309069c 18%,#03090622 45%,transparent 70%)}
.teaching-slide.slide-helicopter .helicopter-cinema h2{position:absolute;left:4%;right:90px;bottom:5%;margin:0;z-index:3;color:#fff0c2;font:900 clamp(22px,min(3vw,7cqh),50px)/1.3 var(--sans);letter-spacing:.025em;text-transform:uppercase;text-shadow:0 2px 10px #000c;opacity:0;transform:translateY(12px);transition:opacity 1.3s ease,transform 1.3s ease;pointer-events:none}
.teaching-slide.slide-helicopter .helicopter-cinema.has-started h2{opacity:1;transform:translateY(0)}
.helicopter-retry{position:absolute;left:50%;top:40%;transform:translate(-50%,-50%);z-index:4;border:1px solid #d5be80;border-radius:7px;padding:12px 20px;background:#17241deb;color:#fff0c2;font:600 18px/1.4 var(--sans);cursor:pointer}
.helicopter-mute{position:absolute;right:20px;bottom:20px;z-index:4;display:grid;place-items:center;width:46px;height:46px;padding:0;border:1px solid #ead7a988;border-radius:50%;background:#101e18b8;color:#fff0c2;cursor:pointer;backdrop-filter:blur(8px)}
.helicopter-mute svg{display:block;width:24px;height:24px;pointer-events:none}
.helicopter-mute:hover{background:#354335df;border-color:#fff0c2}
.helicopter-mute:focus-visible{outline:2px solid #fff0c2;outline-offset:3px}
.helicopter-retry[hidden]{display:none}
@media(max-width:600px){.teaching-slide.slide-helicopter .helicopter-cinema h2{font-size:clamp(17px,4.2vw,24px);left:5%;right:75px}.helicopter-mute{right:14px;bottom:16px}}
@media(prefers-reduced-motion:reduce){.teaching-slide.slide-helicopter .helicopter-cinema h2{transition:none;transform:none}}