/* Scroll-driven, illustrative BIM coordination sequence for InnoTech. */
.assembly-track{height:520vh;background:#081820;color:#f3f8f5;position:relative}
.assembly-sticky{height:100svh;min-height:640px;position:sticky;top:0;overflow:hidden;display:flex;align-items:center;background:radial-gradient(ellipse at 81% 45%,#183b49 0%,#0c2330 43%,#071721 78%)}
.assembly-sticky:before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.18;background-image:linear-gradient(#55737a 1px,transparent 1px),linear-gradient(90deg,#55737a 1px,transparent 1px);background-size:68px 68px;mask-image:linear-gradient(to right,transparent 15%,#000 95%)}
.assembly-sticky:after{content:"";position:absolute;inset:auto -15% -50% 30%;height:75%;border-radius:50%;background:#8db9b8;filter:blur(110px);opacity:.045;pointer-events:none}
.assembly-layout{position:relative;z-index:1;display:grid;grid-template-columns:minmax(320px,42%) minmax(0,58%);align-items:center;gap:12px;height:100%;padding-top:30px;padding-bottom:42px}
.assembly-content{position:relative;z-index:2;max-width:520px}
.assembly-kicker{color:#b9d0d1;margin-bottom:22px}
.assembly-title{font:500 clamp(41px,5.1vw,70px)/1.04 'Space Grotesk',sans-serif;letter-spacing:-.065em;margin:0 0 22px}
.assembly-title em{font-style:normal;color:var(--lime)}
.assembly-intro{color:#a5b9bf;font-size:15px;line-height:1.72;max-width:410px;margin:0}
.assembly-stage-display{position:relative;min-height:146px;margin-top:37px;border-left:1px solid #4c6b70;padding-left:24px}
.assembly-stage-display:before{content:"";position:absolute;left:-2px;top:0;width:3px;height:43px;background:var(--lime);transition:transform .35s ease}
.assembly-stage-entry{position:absolute;top:0;left:24px;right:0;opacity:0;visibility:hidden;transform:translateY(13px);pointer-events:none;transition:opacity .3s ease,transform .4s ease}
.assembly-stage-entry.is-active{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
.assembly-stage-entry .mono{color:var(--stage-color,#d5fa69);letter-spacing:.14em}
.assembly-stage-entry h3{font:500 27px/1.15 'Space Grotesk',sans-serif;letter-spacing:-.04em;margin:11px 0 8px}
.assembly-stage-entry p{color:#99b2b8;font-size:13px;line-height:1.65;margin:0;max-width:390px}
.assembly-steps{list-style:none;display:grid;grid-template-columns:repeat(5,1fr);padding:0;margin:38px 0 0;max-width:480px;gap:10px}
.assembly-steps li{border-top:2px solid #36505a;padding-top:12px;opacity:.43;transition:opacity .3s,border-color .3s}
.assembly-steps li.is-active{opacity:1;border-color:var(--system-color)}
.assembly-steps li.is-complete{opacity:.82;border-color:var(--system-color)}
.assembly-steps .mono{display:block;color:var(--system-color);font-size:10px;margin-bottom:3px}
.assembly-steps span:last-child{display:block;font-size:11px;font-weight:600;letter-spacing:.005em}
.assembly-visual{position:relative;align-self:center;min-width:0;display:flex;align-items:center;justify-content:center;isolation:isolate}
.assembly-svg{display:block;max-width:none;width:114%;height:auto;overflow:visible;filter:drop-shadow(0 15px 36px rgba(0,0,0,.25))}
.assembly-visual:before{content:"";position:absolute;width:72%;height:70%;border:1px solid rgba(182,220,228,.09);border-radius:50%;transform:rotate(-25deg)}
.assembly-visual:after{content:"";position:absolute;width:55%;height:52%;border:1px solid rgba(182,220,228,.1);border-radius:50%;transform:rotate(-25deg)}
.assembly-status{position:absolute;right:0;top:8%;font:500 10px/1.5 'IBM Plex Mono',monospace;color:#bad0d5;letter-spacing:.08em;text-align:right}
.assembly-status:before{content:"";display:inline-block;vertical-align:middle;width:7px;height:7px;margin-right:9px;background:var(--lime);border-radius:50%;box-shadow:0 0 0 5px rgba(213,250,105,.12)}
.assembly-caption{position:absolute;right:0;bottom:6%;font:500 10px/1.5 'IBM Plex Mono',monospace;color:#90aab0;letter-spacing:.06em;text-transform:uppercase}
.assembly-progress{position:absolute;left:0;right:0;bottom:0;height:4px;background:#243c45;z-index:4}
.assembly-progress-bar{height:100%;width:100%;background:linear-gradient(90deg,#57aaf4,#79d8a6,#f1d35a,#d6a176,#d5fa69);transform:scaleX(0);transform-origin:left center;will-change:transform}
.assembly-scroll-hint{position:absolute;bottom:24px;left:max(38px,calc((100vw - 1240px)/2));font:500 10px 'IBM Plex Mono',monospace;letter-spacing:.12em;color:#89a8ac;z-index:3}
.assembly-scroll-hint span{color:var(--lime);margin-right:10px}
.reveal-on-scroll{opacity:0;transform:translateY(25px);transition:opacity .65s ease,transform .7s cubic-bezier(.16,1,.3,1)}
.reveal-on-scroll.in-view{opacity:1;transform:translateY(0)}
@media(max-width:1100px){.assembly-layout{grid-template-columns:44% 56%}.assembly-title{font-size:clamp(39px,5.2vw,58px)}.assembly-svg{width:120%}.assembly-stage-entry h3{font-size:23px}.assembly-content{max-width:450px}}
@media(max-width:760px){
  .assembly-track{height:470vh}
  .assembly-sticky{min-height:590px}
  .assembly-layout{display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;padding-top:79px;padding-bottom:24px;gap:0}
  .assembly-content{max-width:none}
  .assembly-kicker{margin-bottom:8px;font-size:9px}
  .assembly-title{font-size:clamp(35px,8vw,47px);line-height:1.06;margin:0 0 8px}
  .assembly-intro{display:none}
  .assembly-stage-display{min-height:100px;margin-top:13px;padding-left:15px}
  .assembly-stage-display:before{height:27px}
  .assembly-stage-entry{left:15px}
  .assembly-stage-entry h3{font-size:21px;margin:5px 0}
  .assembly-stage-entry p{font-size:12px;line-height:1.45;max-width:100%}
  .assembly-steps{margin-top:10px;max-width:none;gap:6px}
  .assembly-steps li{padding-top:4px}
  .assembly-steps li span:last-child{font-size:9px}
  .assembly-visual{flex:1;min-height:230px;margin-top:-2px;align-self:stretch}
  .assembly-svg{width:min(112%,630px);height:auto;max-height:45svh}
  .assembly-status{top:6%;right:0;font-size:8px}
  .assembly-caption,.assembly-scroll-hint{display:none}
}
@media(max-width:410px){.assembly-title{font-size:33px}.assembly-steps li span:last-child{font-size:8px}.assembly-stage-entry h3{font-size:19px}.assembly-svg{width:118%;max-height:41svh}.assembly-layout{padding-top:76px}}
@media(max-height:710px) and (min-width:761px){.assembly-layout{padding-top:70px}.assembly-title{font-size:44px}.assembly-intro{font-size:13px}.assembly-stage-display{margin-top:22px;min-height:120px}.assembly-steps{margin-top:20px}.assembly-svg{max-height:83svh;width:auto}.assembly-scroll-hint{display:none}}
@media(prefers-reduced-motion:reduce){
  .assembly-track{height:auto}
  .assembly-sticky{position:relative;height:auto;min-height:710px;padding:60px 0}
  .assembly-layout{min-height:600px;height:auto;padding-top:20px;padding-bottom:20px}
  .assembly-stage-entry,.assembly-steps li,.reveal-on-scroll{transition:none;transform:none}
  .reveal-on-scroll{opacity:1}
  .assembly-progress-bar{transform:scaleX(1)}
}