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64px));opacity:1;pointer-events:auto;transform:none;transition:opacity .22s ease,transform .22s ease}.echo-story-scenarios .scenario-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:0}.echo-story-scenarios .scenario-item{min-height:168px;padding:22px;opacity:1;transform:none;transition:opacity .26s ease var(--scenario-delay),transform .26s ease var(--scenario-delay)}.echo-story-scenarios .scenario-item p{font-size:13px;line-height:1.58}.echo-story-scenarios .scenario-item-probe{grid-column:2}.echo-physical-world{position:relative;display:grid;justify-items:center;overflow:hidden;padding:0 clamp(24px,5vw,64px) clamp(88px,10vh,132px);background:radial-gradient(circle at 50% 25%,rgba(89,153,255,.12),transparent 34%),linear-gradient(180deg,#fff,#f6f9ff 60%,#fff)}.echo-physical-broadcast{position:relative;width:min(620px,calc(100vw - 48px));height:150px;overflow:hidden}.echo-broadcast-wave{position:absolute;bottom:0;left:50%;width:82px;height:38px;border:1.5px solid transparent;border-top-color:#376fd275;border-right-color:#376fd275;border-left-color:#376fd275;border-radius:999px 999px 0 0;opacity:0;transform:translate(-50%) scale(.5);transform-origin:center bottom;animation:echoPhysicalBroadcast 4.8s ease-out infinite}.echo-broadcast-wave.wave-two{animation-delay:1.6s}.echo-broadcast-wave.wave-three{animation-delay:3.2s}.echo-physical-copy{position:relative;z-index:2;max-width:860px;display:grid;justify-items:center;gap:14px;text-align:center}.echo-physical-copy>span{color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.08em}.echo-physical-copy h2{margin:0;color:#17151b;font-family:var(--font-sans);font-size:var(--type-home-section-title);font-weight:800;line-height:1.04;letter-spacing:-.045em}.echo-physical-copy p{max-width:760px;margin:6px 0 0;color:var(--muted);font-size:clamp(15px,1.45vw,18px);line-height:1.72}.echo-physical-device-card{width:min(920px,calc(100vw - 48px));margin-top:42px;margin-bottom:0;overflow:hidden;border:1px solid rgba(37,99,235,.13);border-radius:28px;background:#f8fbff;box-shadow:0 24px 64px #2c50871f}.echo-physical-device-card img{display:block;width:100%;height:auto}@keyframes echoPhysicalBroadcast{0%{opacity:0;transform:translate(-50%) translateY(0) scale(.45)}18%{opacity:.58}58%{opacity:.3}82%,to{opacity:0;transform:translate(-50%) translateY(-66px) scale(3.25)}}@media(prefers-reduced-motion:reduce){.echo-broadcast-wave{animation:none}}@media(max-width:900px){.echo-story-stage{padding:clamp(22px,4vh,40px) clamp(18px,5vw,34px)}.echo-story-heading{top:clamp(10px,2.6vh,24px);left:max(18px,calc((100vw - 760px)/2));width:min(760px,calc(100vw - 36px));gap:8px}.echo-story-scenarios{width:min(720px,calc(100vw - 36px))}.echo-story-scenarios .scenario-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.echo-story-scenarios .scenario-item{min-height:148px;padding:18px}}@media(max-width:640px){.echo-story-stage{place-items:start center;padding:20px 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cubic-bezier(.19,1,.22,1)}.story-app-panel{position:absolute;top:var(--app-card-top);right:0;bottom:12px;left:8px;display:grid;grid-template-rows:auto minmax(0,1fr);overflow:hidden;border:1px solid rgba(31,36,48,.12);border-radius:14px;background:#fff;box-shadow:0 10px 22px #1f24301a,0 3px 8px #1f24300f;opacity:.84;filter:saturate(.9) brightness(.98);transform:translate3d(26px,-18px,0) scale(.94);transform-origin:center top;transition:filter .9s ease,box-shadow .9s ease,transform 1.12s cubic-bezier(.19,1,.22,1);will-change:filter,transform}.story-app-panel.stack-front{z-index:6;opacity:1;filter:saturate(1) brightness(1);border-radius:14px 0 0 14px;box-shadow:0 0 0 1px #1f24300f,0 4px 10px #1f24300f;transform:translateZ(0) scale(1);animation:appSwitchToFront 1.12s cubic-bezier(.19,1,.22,1) both}.story-app-panel.stack-back-one{z-index:4;opacity:1;filter:saturate(.98) brightness(.99);transform:translate3d(28px,-18px,0) scale(.958);animation:appRetreatOne 1.12s cubic-bezier(.19,1,.22,1) 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