:root{color-scheme:dark;--bg:#0a1420;--surface:#101f2f;--soft:#132639;--ink:#edf4fa;--muted:#a2b2c2;--line:#293e51;--accent:#70dace;--shadow:0 20px 45px #0003;--card:#102133;--diagram:#68869f}
:root[data-theme=light]{color-scheme:light;--bg:#f4f6f7;--surface:#fff;--soft:#eaf0f3;--ink:#172f42;--muted:#5b7283;--line:#d2dfe6;--accent:#0d7978;--shadow:0 20px 45px #26465e0d;--card:#fff;--diagram:#8aa5b8}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}a:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:5px}.skip-link{position:fixed;z-index:10;top:-60px;left:20px;padding:10px 18px;background:var(--surface)}.skip-link:focus{top:12px}.site-header{max-width:1440px;margin:auto;padding:23px 56px;display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line)}.brand{display:flex;gap:13px;align-items:center}.brand-symbol{font:500 34px/1 Georgia,serif;color:var(--accent)}.brand-symbol>span{color:#9aaaf2}.brand b{font-size:16px;letter-spacing:.08em}.brand small{display:block;font-size:9px;letter-spacing:.16em;color:var(--muted);margin-top:3px}.site-header nav{display:flex;align-items:center;gap:25px;font-size:12px;color:var(--muted)}.site-header nav>a:hover{color:var(--ink)}.site-header nav>a>span{margin-left:8px}.theme-toggle{background:var(--surface);border:1px solid var(--line);color:var(--ink);border-radius:30px;padding:7px 13px;display:flex;align-items:center;gap:7px;font-size:12px}.theme-icon{font-size:16px}main{max-width:1440px;margin:auto;padding:0 56px}.intro{padding:44px 0 37px;display:flex;justify-content:space-between;gap:40px;align-items:center;border-bottom:1px solid var(--line)}.intro-copy{max-width:790px}.eyebrow{font-size:10px;font-weight:600;letter-spacing:.18em;color:var(--accent);margin:0 0 14px}.intro .eyebrow{display:flex;align-items:center;gap:10px}.intro .eyebrow>span{width:6px;height:6px;background:var(--accent);border-radius:50%}h1{font-size:clamp(30px,3.4vw,47px);font-weight:600;letter-spacing:.025em;line-height:1.45;margin:0 0 22px}.intro-description{max-width:660px;color:var(--muted);font-size:15px;line-height:1.95;margin:0}.intro-diagram{flex:0 0 255px;color:var(--diagram);padding:8px}.intro-diagram svg{width:100%;height:auto}#platforms{padding:39px 0 46px;scroll-margin-top:24px}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:23px}.section-heading h2,.workflow h2{margin:0;font-size:23px;font-weight:550}.section-heading .eyebrow,.workflow .eyebrow{margin-bottom:7px}.section-heading>p{font-size:11px;color:var(--muted);margin:0 0 3px}.platform-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:23px}.platform{--tone:#71d4cf;display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:15px;overflow:hidden;box-shadow:var(--shadow);transition:transform .25s,border-color .25s}.platform:hover{transform:translateY(-5px);border-color:var(--tone)}.cold{--tone:#a6ca83}.sc{--tone:#a7acf2}.platform-preview{position:relative;aspect-ratio:1.65;background:#0b1925;border-bottom:1px solid var(--line);overflow:hidden}.platform-preview::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,#06111eb3 0%,transparent 32%,transparent 60%,#06111e9c 100%);pointer-events:none}.platform-preview img{display:block;width:100%;height:100%;object-fit:cover;object-position:50% 48%;transition:transform .5s}.ion .platform-preview img{object-position:50% 53%}.cold .platform-preview img{object-position:51% 48%}.platform:hover img{transform:scale(1.035)}.platform-number{z-index:1;position:absolute;left:18px;top:14px;color:#fff;font:500 12px/1.5 ui-monospace,monospace;display:flex;align-items:center;gap:12px}.platform-number>span{font:500 8px/1.5 system-ui;letter-spacing:.09em;color:#dce9f4}.preview-caption{position:absolute;z-index:1;bottom:12px;right:15px;color:#dfebf4;font-size:9px;letter-spacing:.08em}.platform-body{display:flex;flex:1;flex-direction:column;padding:24px 24px 20px}.platform-category{font-size:10px;letter-spacing:.03em;color:var(--tone);margin:0 0 9px}:root[data-theme=light] .platform-category{color:var(--accent)}h3{font-size:22px;font-weight:600;letter-spacing:.015em;line-height:1.5;margin:0 0 13px}.platform-description{color:var(--muted);font-size:13px;line-height:1.95;margin:0 0 20px}.topics{display:flex;flex-wrap:wrap;gap:7px;list-style:none;padding:0;margin:auto 0 24px}.topics li{border:1px solid var(--line);border-radius:5px;padding:3px 7px;font-size:10px;color:var(--muted)}.enter{display:flex;justify-content:space-between;align-items:center;padding-top:15px;border-top:1px solid var(--line);font-size:12px;font-weight:600}.enter>span:last-child{font-size:21px;font-weight:400;color:var(--tone)}.workflow{padding:31px 0 34px;border-top:1px solid var(--line);display:grid;grid-template-columns:.82fr 3fr;gap:35px}.workflow ol{list-style:none;padding:0;margin:3px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:26px}.workflow li{display:flex;align-items:flex-start;gap:12px}.workflow li>span{font:400 12px/1.5 ui-monospace,monospace;color:var(--accent);margin-top:2px}.workflow li h3{font-size:13px;font-weight:550;margin:0 0 8px}.workflow li p{font-size:11px;color:var(--muted);margin:0;line-height:1.9}.model-note{padding:21px 23px;margin:0 0 45px;border:1px solid var(--line);background:var(--soft);border-radius:9px;color:var(--muted);font-size:11px;line-height:1.9}footer{max-width:1328px;margin:0 auto;padding:21px 0 28px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:10px;letter-spacing:.03em}
@media(min-width:1550px){.intro{padding-top:85px;padding-bottom:69px}.intro-diagram{flex-basis:300px}.platform-body{padding:29px}.platform-description{font-size:13px}}
@media(max-width:1100px){.site-header{padding:20px 32px}main{padding:0 32px}footer{margin:0 32px}.intro{padding:48px 0 43px;gap:18px}.intro-diagram{flex-basis:200px}.platform-grid{gap:16px}.platform-body{padding:20px 18px 17px}h3{font-size:19px}.platform-description{font-size:12px}.platform-number{left:12px;gap:9px}.platform-number>span{font-size:7px}.workflow{grid-template-columns:1fr;gap:22px}}
@media(max-width:760px){.site-header{padding:18px 22px}.brand small{font-size:7px}.site-header nav{gap:12px}.site-header nav>a{font-size:10px}.theme-toggle{padding:6px 10px}.theme-toggle>span:last-child{display:none}main{padding:0 22px}.intro{padding:36px 0 33px}.intro-copy{max-width:100%}h1{font-size:32px}.intro-description{font-size:13px}.intro-diagram{display:none}.eyebrow{font-size:8px;letter-spacing:.13em}.section-heading{align-items:flex-start;flex-direction:column;gap:12px}.section-heading h2,.workflow h2{font-size:21px}.section-heading>p{font-size:10px}.platform-grid{grid-template-columns:1fr;gap:23px}.platform-preview{aspect-ratio:1.8}.platform-number{top:17px;left:20px;font-size:13px;gap:14px}.platform-number>span{font-size:9px}.platform-body{padding:25px}.platform-category{font-size:11px}h3{font-size:24px}.platform-description{font-size:13px}.topics li{font-size:10px}.enter{font-size:13px}.workflow{padding-top:25px}.workflow ol{grid-template-columns:1fr;gap:19px}.workflow li p{font-size:12px}.workflow li h3{font-size:14px}.model-note{font-size:11px;margin-bottom:30px}footer{margin:0 22px;flex-direction:column;gap:6px;padding-bottom:23px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}

footer{flex-wrap:wrap}.filing{display:flex;align-items:center;flex-wrap:wrap;gap:8px 16px;flex-basis:100%;font-size:10px}.filing a{color:var(--muted)}.filing a:hover{text-decoration:underline}.filing img{vertical-align:middle}

.access-note{font-size:12px;color:var(--muted);margin:-7px 0 18px}

.gates{--tone:#e9c47d}.platform-scope{margin:-5px 0 24px;max-width:1000px;color:var(--muted);font-size:13px;line-height:1.9}.platform-description{font-size:14px}.platform-preview{aspect-ratio:1.85}.gates .platform-preview img{object-position:center}.platform-body{padding:26px 28px 23px}@media(max-width:760px){.platform-scope{font-size:12px;margin-top:0}.platform-description{font-size:13px}.platform-body{padding:25px}.platform-preview{aspect-ratio:1.8}}

.platform-grid{grid-template-columns:minmax(0,1fr)!important}

/* Each platform occupies its own complete row, in the same order on every screen. */
@media(min-width:761px){
  .platform{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr)}
  .platform-preview{aspect-ratio:auto;min-height:285px;border-bottom:0;border-right:1px solid var(--line)}
  .platform-body{padding:28px 30px 25px}
  .platform h3{font-size:25px;line-height:1.5}
  .platform-description{font-size:14px}
}