:root{
  color-scheme:dark;
  --bg:#02070d;--panel:rgba(4,15,25,.82);--panel2:rgba(7,24,38,.72);
  --line:rgba(92,207,255,.34);--line2:rgba(92,207,255,.14);--cyan:#83ddff;
  --ice:#d8f5ff;--muted:#8faab8;--gold:#f4b85d;--active:#8ce8ff;
}
*{box-sizing:border-box}html{background:var(--bg);scroll-behavior:smooth}body{margin:0;min-width:320px;color:#eefaff;background:
radial-gradient(circle at 78% 62%,rgba(36,144,196,.16),transparent 28rem),
linear-gradient(rgba(79,190,239,.035) 1px,transparent 1px),
linear-gradient(90deg,rgba(79,190,239,.035) 1px,transparent 1px),var(--bg);
background-size:auto,42px 42px,42px 42px,auto;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
body:before{content:"";position:fixed;inset:0;pointer-events:none;background:linear-gradient(180deg,transparent 55%,rgba(13,91,126,.08)),radial-gradient(ellipse at 50% 100%,rgba(35,166,221,.11),transparent 46%);z-index:-1}
a{color:inherit}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:16px;top:16px;z-index:100;padding:12px;background:#fff;color:#000}
.blueprint-shell{width:min(1580px,calc(100% - 32px));margin:auto;padding:32px 0 48px}
.blueprint-header{display:grid;grid-template-columns:1fr auto;gap:32px;align-items:start;padding:18px 18px 28px;border-top:1px solid var(--line2)}
.brand-link{font-size:.76rem;letter-spacing:.17em;text-decoration:none;color:var(--cyan)}
.kicker{margin:20px 0 4px;font-size:clamp(1.7rem,3vw,3.8rem);letter-spacing:.08em;line-height:1;color:#fff}
.blueprint-header h1{margin:0;font-size:clamp(.78rem,1.3vw,1.12rem);font-weight:500;letter-spacing:.29em;color:#b4cfdd}
.lede{max-width:880px;color:var(--muted);line-height:1.65}
.status-stack{min-width:220px;text-align:right;padding:14px;border:1px solid var(--line2);background:rgba(3,12,20,.58)}
.status-stack span,.section-heading span,.trace-console span,.surface-card>span{display:block;font-size:.66rem;letter-spacing:.18em;color:var(--cyan)}
.status-stack strong{display:block;margin:8px 0;font-size:1rem;letter-spacing:.12em}.status-stack small{color:var(--muted)}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;padding:0 18px}
.product-card,.surface-card,.proof-loop article,.contract-section,.runtime-section,.trace-console{position:relative;border:1px solid var(--line2);background:linear-gradient(180deg,rgba(7,23,36,.91),rgba(2,10,17,.86));box-shadow:inset 0 0 35px rgba(59,185,238,.035)}
.product-card{min-height:285px;padding:22px;display:flex;flex-direction:column;overflow:hidden;transition:.22s ease}
.product-card:after{content:"";position:absolute;inset:auto 0 0;height:1px;background:linear-gradient(90deg,transparent,var(--cyan),transparent);opacity:.28}
.product-card.is-active,.trace-node.is-traced{border-color:rgba(124,226,255,.72);box-shadow:0 0 28px rgba(62,188,236,.12),inset 0 0 42px rgba(61,190,241,.08)}
.product-card.is-active{transform:translateY(-4px)}
.product-meta{display:flex;justify-content:space-between;gap:12px;color:var(--muted)}.product-meta span{color:var(--cyan)}
.product-card h2{font-size:clamp(1.45rem,2vw,2rem);letter-spacing:.06em;margin:26px 0 8px}.product-card p{color:var(--muted);line-height:1.55;flex:1}
.product-card nav{display:flex;gap:10px;flex-wrap:wrap}.product-card nav a{font-size:.75rem;color:#c8e8f7;text-underline-offset:3px}
.product-card button{margin-top:18px;align-self:flex-start;border:1px solid var(--line);background:#06121d;color:var(--cyan);padding:9px 12px;font:600 .68rem/1 inherit;letter-spacing:.14em;cursor:pointer}
.product-card button:hover,.product-card button:focus-visible{background:rgba(91,207,255,.12);outline:none}
.future-card{background:linear-gradient(180deg,rgba(6,17,26,.58),rgba(2,8,13,.82))}
.contract-section,.runtime-section{margin:28px 18px 0;padding:22px}
.section-heading{display:grid;grid-template-columns:150px 1fr 1.2fr;gap:18px;align-items:end}.section-heading h2{margin:0;font-size:1.35rem;letter-spacing:.05em}.section-heading p{margin:0;color:var(--muted);line-height:1.5}
.contract-rail,.runtime-grid{margin-top:18px;display:grid;grid-template-columns:repeat(10,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.contract-rail span,.runtime-grid div{min-height:56px;display:grid;place-items:center;text-align:center;padding:8px;border-right:1px solid var(--line2);font-size:.64rem;letter-spacing:.08em;color:#c9ebf8}
.contract-rail span:last-child,.runtime-grid div:last-child{border-right:0}.contract-section:before,.runtime-section:before{content:"";position:absolute;left:50%;top:-29px;height:29px;border-left:1px solid var(--line)}
.runtime-section{margin-top:26px}.runtime-section:before{top:-27px;height:27px}.section-heading.compact{grid-template-columns:150px 1fr 1.2fr}
.runtime-grid{grid-template-columns:repeat(10,1fr)}.runtime-grid div{min-height:74px;font-size:.62rem}
.surface-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:24px 18px 0}.surface-card{min-height:190px;padding:20px}.surface-card h3{margin:10px 0;font-size:1.18rem}.surface-card p{color:var(--muted);line-height:1.55}.surface-card a,.surface-card small{font-size:.75rem;color:#cdebf7}
.proof-loop{display:grid;grid-template-columns:1fr auto 1fr auto 1fr auto 1fr auto 1fr;gap:8px;align-items:center;margin:24px 18px 0}.proof-loop article{min-height:118px;padding:16px}.proof-loop b{color:var(--cyan);font-size:.67rem}.proof-loop h3{font-size:.82rem;letter-spacing:.09em;margin:13px 0 6px}.proof-loop p{margin:0;color:var(--muted);font-size:.78rem;line-height:1.45}.flow-arrow{color:var(--cyan);opacity:.7}
.trace-console{margin:24px 18px 0;padding:18px;display:grid;grid-template-columns:120px 140px 1fr;gap:12px;align-items:center}.trace-console strong{letter-spacing:.1em}.trace-console p{margin:0;color:var(--muted)}.trace-path{grid-column:2/-1;padding-top:12px;border-top:1px solid var(--line2);font:600 .7rem/1.5 ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--cyan);letter-spacing:.06em}
footer{display:flex;justify-content:space-between;gap:24px;align-items:center;margin:28px 18px 0;padding:18px 0;border-top:1px solid var(--line2);color:var(--muted);font-size:.77rem}footer nav{display:flex;gap:15px;flex-wrap:wrap}
@media(max-width:1100px){.product-grid,.surface-grid{grid-template-columns:repeat(2,1fr)}.contract-rail,.runtime-grid{grid-template-columns:repeat(5,1fr)}.proof-loop{grid-template-columns:1fr 1fr 1fr;}.flow-arrow{display:none}.trace-console{grid-template-columns:1fr 1fr}.trace-console p,.trace-path{grid-column:1/-1}}
@media(max-width:680px){.blueprint-shell{width:min(100% - 18px,1580px)}.blueprint-header{grid-template-columns:1fr}.status-stack{text-align:left}.product-grid,.surface-grid{grid-template-columns:1fr;padding:0}.contract-section,.runtime-section,.proof-loop,.trace-console,footer{margin-left:0;margin-right:0}.section-heading,.section-heading.compact{grid-template-columns:1fr}.contract-rail,.runtime-grid{grid-template-columns:repeat(2,1fr)}.proof-loop{grid-template-columns:1fr}.trace-console{grid-template-columns:1fr}.trace-path{grid-column:1}.kicker{font-size:1.65rem}footer{align-items:flex-start;flex-direction:column}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}