*,*:before,*:after{box-sizing:border-box}html{margin:0;min-height:100%;background:#fff;color:#1a1a1a;font-family:Segoe UI,system-ui,sans-serif;overflow-x:clip;scroll-behavior:auto;scrollbar-width:none}html::-webkit-scrollbar{width:0;height:0;display:none}body{margin:0;min-height:100%;overflow-x:clip;scrollbar-width:none}body::-webkit-scrollbar{width:0;height:0;display:none}#app{position:relative}.intro-hero{position:relative;z-index:10;min-height:170vh;padding:0;background:#fff;text-align:center}.intro-hero__inner{position:sticky;top:0;height:100vh;width:100%;max-width:48rem;margin:0 auto;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem 1.5rem 4rem;box-sizing:border-box}.intro-hero__title{margin:0 0 1.5rem;display:flex;flex-direction:column;align-items:center;gap:.05em}.intro-line{display:block;will-change:transform,opacity,filter}.intro-line--brand{font-size:clamp(2.75rem,11vw,6.5rem);font-weight:800;letter-spacing:-.04em;line-height:.95;color:#1a1a1a}.intro-line--product{font-size:clamp(2.25rem,8vw,5rem);font-weight:800;letter-spacing:-.03em;line-height:1;color:#1a1a1a}.intro-hero__tagline{margin:0 auto;max-width:30rem}.intro-line--tag{font-size:clamp(1.05rem,2.4vw,1.35rem);line-height:1.55;color:#444;font-weight:400}.intro-scroll-hint,.intro-line--hint{position:absolute;bottom:1.5rem;left:50%;margin:0;font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:#888}.product-section{position:relative}.stage{position:relative;height:100vh;width:100%;overflow:hidden;background:#fff}.model-pane{position:absolute;inset:0;width:100%;height:100%;opacity:0}.stage--revealed .model-pane{opacity:1}#webgl{position:absolute;left:0;top:0;display:block}.callout-lines{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:2}.callout-labels{position:absolute;inset:0;pointer-events:none;z-index:3}.callout{position:absolute;max-width:200px;opacity:0;transform:translateY(4px);transition:opacity .25s ease,transform .25s ease}.callout.is-active{opacity:1;transform:translateY(0)}.callout-dot{position:absolute;width:10px;height:10px;border-radius:50%;background:#1a1a1a;border:2px solid rgba(255,255,255,.9);box-shadow:0 0 0 1px #0003;transform:translate(-50%,-50%);opacity:0;transition:opacity .25s ease}.callout-dot.is-active{opacity:1}.callout-card{padding:.35rem .15rem;background:transparent;border:none;font-size:.8rem;line-height:1.35;letter-spacing:.01em;color:#1a1a1a;text-shadow:0 0 8px #fff,0 0 14px #fff,0 1px 0 rgba(255,255,255,.9)}.callout-card strong{display:block;font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:.2rem}.callout-line{stroke:#1a1a1a;stroke-width:1.25;fill:none;opacity:0;transition:opacity .25s ease}.callout-line.is-active{opacity:.75}.copy-rail{position:absolute;left:50%;bottom:0;transform:translate(-50%);width:min(36rem,calc(100% - 2.5rem));padding:1rem 1rem 2.5rem;z-index:4;pointer-events:none;text-align:center;background:transparent;min-height:9.5rem;opacity:0;display:flex;align-items:center;justify-content:center}.stage--revealed .copy-rail{opacity:1}.copy-block{opacity:0;transform:translateY(12px);transition:opacity .35s ease,transform .35s ease;position:absolute;left:0;right:0;bottom:2.5rem;margin:0 auto;max-width:34rem;background:transparent}.copy-block.is-active{opacity:1;transform:translateY(0)}.copy-block h2{margin:0 0 .65rem;font-size:clamp(1.45rem,3.2vw,2.05rem);font-weight:600;letter-spacing:-.02em;line-height:1.15;color:#1a1a1a;text-shadow:0 0 10px #fff,0 0 18px #fff,0 1px 0 rgba(255,255,255,.95)}.copy-block p{margin:0 auto;font-size:clamp(.95rem,1.6vw,1.05rem);line-height:1.55;color:#333;max-width:32rem;text-shadow:0 0 10px #fff,0 0 18px #fff,0 1px 0 rgba(255,255,255,.95)}.scroll-hint{position:absolute;bottom:.75rem;left:50%;transform:translate(-50%);margin:0;font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:#888;z-index:5;pointer-events:none;opacity:0;text-shadow:0 0 8px #fff,0 0 12px #fff}.stage--revealed .scroll-hint{opacity:1}@media(max-width:800px){.copy-rail{width:calc(100% - 1.5rem);min-height:10rem;padding:1rem .75rem 2.4rem}}