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html{scroll-padding-top:0}
#filmDialog{width:min(1100px,94vw,calc(120svh + 68px))}
@media(max-width:700px){#productCanvas{top:0;left:0;width:100%;height:100%}}
@media(min-width:701px){.chapter-copy,.design-stage[data-chapter="1"] .chapter-copy,.design-stage[data-chapter="2"] .chapter-copy,.design-stage[data-chapter="3"] .chapter-copy{top:9%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.js .reveal:not(.revealed){opacity:1;transform:none}.hero-aircraft img{transform:none}}

/* Continuous orbit: a stable copy anchor, continuous frames, no layout jump. */
.chapter-copy,.design-stage[data-chapter="1"] .chapter-copy,.design-stage[data-chapter="2"] .chapter-copy,.design-stage[data-chapter="3"] .chapter-copy{left:var(--space);right:auto;top:10%;text-align:left;transition:none}
.design-stage[data-chapter="1"] .chapter-copy>p:last-child,.design-stage[data-chapter="3"] .chapter-copy>p:last-child{margin-left:0}
.platform-image>.platform-transition-image{position:absolute;left:5%;top:0;width:90%;height:100%;margin:0;pointer-events:none}
.platform-info{min-height:146px;align-content:start}
.platform-info>p{min-height:6em}
.chapter-controls button,.platform-selector button{transition:color .2s}
.tech-details details{box-sizing:border-box}
dialog[open]{animation:dialog-enter .22s cubic-bezier(.2,.7,.2,1)}
@keyframes dialog-enter{from{opacity:0;transform:translateY(10px) scale(.985)}to{opacity:1;transform:none}}
@media(max-width:700px){.chapter-copy,.design-stage[data-chapter="1"] .chapter-copy,.design-stage[data-chapter="2"] .chapter-copy,.design-stage[data-chapter="3"] .chapter-copy{top:15%}.platform-image>.platform-transition-image{left:0;width:100%}.platform-info{min-height:210px}}
@media(prefers-reduced-motion:reduce){dialog[open]{animation:none}}

/* One continuous viewer, two native aircraft families. */
.story-view{position:absolute;inset:0;z-index:2;pointer-events:none}
.video-fallback:not(.video-ready) #productVideo{opacity:0}
.video-fallback:not(.video-ready):not(.sequence-ready) .stage-poster{display:block}
.story-model-snapshot{position:absolute;inset:0;width:100%;height:100%;z-index:3;pointer-events:none}
.story-platform-switch{position:absolute;z-index:6;top:74px;right:var(--space);width:310px}
.story-platform-tabs{display:flex;justify-content:space-between;border-bottom:1px solid #d9e2e4;gap:20px}
.story-platform-tabs button{position:relative;padding:10px 0 13px;font-size:11px;color:#7c8d95;white-space:nowrap;transition:color .18s}
.story-platform-tabs button>span{font:8px Arial,sans-serif;margin-right:7px;letter-spacing:.05em}
.story-platform-tabs button:after{content:'';position:absolute;left:0;right:0;bottom:-1px;height:1px;background:transparent}
.story-platform-tabs button[aria-selected="true"]{color:#1d4559}
.story-platform-tabs button[aria-selected="true"]:after{background:#315e73}
.story-platform-tabs button:focus-visible,.story-platform-caption button:focus-visible{outline:2px solid #376f89;outline-offset:5px}
.story-platform-caption{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:10px;font-size:8px;color:#7a909b}
.story-platform-caption button{font-size:9px;color:#315f75;padding:4px 0}
.platform-explore{display:inline-flex;gap:17px;font-size:10px;line-height:1.6;color:#315f75;margin-top:16px;padding-bottom:5px;border-bottom:1px solid #aebfc5}
@media(min-width:1900px){.story-platform-switch{top:90px;width:390px}.story-platform-tabs button{font-size:14px}.story-platform-caption{font-size:11px}.story-platform-caption button{font-size:11px}.platform-explore{font-size:12px}}
@media(max-width:700px){.story-platform-switch{top:53px;left:24px;right:24px;width:auto}.story-platform-tabs{gap:22px}.story-platform-tabs button{font-size:10px;padding:8px 0 10px}.story-platform-tabs button>span{font-size:7px}.story-platform-caption{margin-top:5px;font-size:7px}.story-platform-caption button{font-size:8px;padding:3px 0}.platform-explore{font-size:9px;margin-top:12px}.design-stage .chapter-copy,.design-stage[data-chapter="1"] .chapter-copy,.design-stage[data-chapter="2"] .chapter-copy,.design-stage[data-chapter="3"] .chapter-copy{top:max(124px,15%)}}
@media(prefers-reduced-motion:reduce){.story-platform-tabs button{transition:none}}