.ai-stack-section{padding:70px 0;background:#f4f7fc;border-top:1px solid #dde5f0;color:#14243b;overflow:hidden}
.ai-stack-layout{display:grid;grid-template-columns:1.15fr 1fr;gap:60px;align-items:center}
.ai-stack-copy h2{font-size:clamp(30px,3.5vw,46px);line-height:1.12;letter-spacing:-1.4px;margin:20px 0;max-width:590px}
.ai-stack-intro{font-size:16px;line-height:1.8;color:#465c76;max-width:610px;margin-bottom:22px}
.ai-stack-orbit{position:relative;width:340px;height:340px;margin:16px auto;isolation:isolate}
.ai-stack-ring{position:absolute;inset:35px;border:1px dashed #b8cbe7;border-radius:50%}
.ai-stack-ring:after{content:"";position:absolute;inset:-3px;border:3px solid transparent;border-top-color:#386fe5;border-radius:50%;animation:ai-stack-spin 22s linear infinite}
.ai-stack-core{position:absolute;inset:104px 89px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:6px;border-radius:28px;background:#1853df;color:white;box-shadow:0 12px 35px #1853df30}
.ai-stack-core strong{font-size:21px;color:white!important}.ai-stack-core span{font-size:10px;color:#e6eeff}.ai-stack-core img{object-fit:contain}
.ai-stack-node{position:absolute;display:grid;place-items:center;width:96px;height:48px;border:1px solid #d6e0ee;border-radius:13px;background:white;box-shadow:0 5px 16px #1936590a;font-size:14px;font-weight:650;color:#203b60}
.ai-stack-node-0{top:0;left:122px}.ai-stack-node-1{top:73px;right:0}.ai-stack-node-2{bottom:73px;right:0}.ai-stack-node-3{bottom:0;left:122px}.ai-stack-node-4{bottom:73px;left:0}.ai-stack-node-5{top:73px;left:0}
.ai-stack-features{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:35px;border-top:1px solid #d5e0ef;padding-top:28px}.ai-stack-number{color:#1853df;font-size:12px;font-weight:700}.ai-stack-features h3{font-size:18px;margin:10px 0}.ai-stack-features p{font-size:14px;line-height:1.7;color:#465c76}.ai-stack-note{font-size:12px;color:#5a6e87;margin-top:23px}
[data-theme=dark] .ai-stack-section{background:#101d2d;border-color:#33445b;color:#edf2fa}[data-theme=dark] .ai-stack-node{background:#1d3048;border-color:#3f5675;color:#e6efff}[data-theme=dark] .ai-stack-ring{border-color:#425d80}[data-theme=dark] .ai-stack-features{border-color:#33445b}[data-theme=dark] :is(.ai-stack-intro,.ai-stack-features p,.ai-stack-note){color:#bdcadb}[data-theme=dark] .ai-stack-number{color:#91b6ff}
@keyframes ai-stack-spin{to{transform:rotate(360deg)}}
@media(max-width:800px){.ai-stack-layout{grid-template-columns:1fr;gap:28px}.ai-stack-section{padding:45px 0}.ai-stack-features{gap:20px}.ai-stack-copy h2{max-width:600px}}
@media(max-width:480px){.ai-stack-orbit{width:290px;height:300px}.ai-stack-node{width:83px;font-size:12px}.ai-stack-node-0,.ai-stack-node-3{left:103px}.ai-stack-node-1,.ai-stack-node-5{top:65px}.ai-stack-node-2,.ai-stack-node-4{bottom:65px}.ai-stack-core{inset:92px 78px;border-radius:22px}.ai-stack-core span{font-size:9px}.ai-stack-core strong{font-size:19px}.ai-stack-ring{inset:30px 24px}.ai-stack-features{grid-template-columns:1fr}.ai-stack-intro{font-size:15px}.ai-stack-copy h2{letter-spacing:-.8px}}
@media(prefers-reduced-motion:reduce){.ai-stack-ring:after{animation:none}}

.ai-stack-node{height:64px;gap:4px;padding:7px 5px;font-size:11px}.ai-stack-node img{display:block;width:30px;height:30px;object-fit:contain}.ai-stack-node:has(img){background:#fff;color:#203b60}.ai-stack-node-5{height:48px}
[data-theme=dark] .ai-stack-node:has(img){background:#fff;color:#203b60}

.proof-track{animation-duration:90s;will-change:transform}.proof-group{flex-shrink:0}.proof-group img{flex-shrink:0}
@media(prefers-reduced-motion:reduce){.proof-track{will-change:auto}}