/* AgencyAI A14. Editorial, quiet, technical. Archivo (UI), Source Serif 4 (display), JetBrains Mono (labels). */
@font-face{font-family:"Archivo";src:url("/fonts/archivo-vf.woff2") format("woff2");font-weight:100 900;font-stretch:62% 125%;font-display:swap}
@font-face{font-family:"Source Serif 4";src:url("/fonts/source-serif-4-vf.woff2") format("woff2");font-weight:200 900;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url("/fonts/jetbrains-mono-vf.woff2") format("woff2");font-weight:100 800;font-display:swap}
:root{
  --paper:#FAF9F6; --paper-2:#F2F0EB; --ink:#111827; --ink-2:#0B1020; --text-2:#3A4150; --slate:#6B7280; --line:#E3E0D9;
  --cobalt:#1559F5; --cobalt-l:#5B8CFA; --night:#0B1020; --night-2:#121A2E; --night-line:rgba(255,255,255,.09); --night-text:#AEB7C7;
  --serif:"Source Serif 4",Georgia,"Times New Roman",serif; --sans:"Archivo",Helvetica,Arial,sans-serif; --mono:"JetBrains Mono",ui-monospace,Menlo,monospace;
  --gutter:clamp(20px,5vw,64px); --max:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.6;text-wrap:pretty;overflow-x:clip;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
p{margin:0}
h1,h2,h3{margin:0;font-family:var(--serif);font-weight:400;letter-spacing:-.018em;line-height:1.04;text-wrap:balance;font-optical-sizing:auto}
h1{font-size:clamp(46px,7.6vw,104px)}
h2{font-size:clamp(34px,4.6vw,60px)}
h3{font-size:clamp(24px,2.4vw,30px);line-height:1.15}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.mono{font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;text-transform:uppercase}
.label{font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--slate);display:inline-flex;align-items:center;gap:10px}
.label::before{content:"";width:14px;height:4px;background:var(--cobalt);border-radius:1px}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:16px;z-index:99;background:#fff;padding:8px 12px;border-radius:8px}
:focus-visible{outline:2px solid var(--cobalt);outline-offset:3px;border-radius:4px}

/* header */
.nav{position:sticky;top:0;z-index:50;background:rgba(250,249,246,.82);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid transparent;transition:border-color .2s}
.nav.scrolled{border-bottom-color:var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand svg{height:22px;width:auto;display:block}
.links{display:flex;align-items:center;gap:28px;font-size:15px;color:var(--text-2)}
.links a:hover{color:var(--ink)}
.links .cta{color:var(--ink);border:1px solid var(--ink);border-radius:999px;padding:7px 16px;font-weight:500}
.links .cta:hover{background:var(--ink);color:var(--paper)}
@media (max-width:760px){.links a:not(.cta){display:none}}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:10px;border-radius:999px;padding:13px 22px;font-size:15.5px;font-weight:500;transition:background .2s,color .2s,border-color .2s}
.btn.primary{background:var(--ink);color:var(--paper)}
.btn.primary:hover{background:var(--cobalt)}
.btn.ghost{border:1px solid var(--line);color:var(--ink)}
.btn.ghost:hover{border-color:var(--ink)}
.btn .arr{transition:transform .2s}.btn:hover .arr{transform:translateX(3px)}
.actions{display:flex;flex-wrap:wrap;gap:12px}

/* hero */
.hero{padding:clamp(72px,12vw,150px) 0 clamp(56px,8vw,96px)}
.hero h1{margin:26px 0 30px;max-width:13ch}
.hero h1 em{font-style:italic;color:var(--cobalt)}
.hero .lede{font-size:clamp(19px,1.7vw,22px);line-height:1.5;color:var(--text-2);max-width:40ch;margin-bottom:36px}
.facts{margin-top:clamp(56px,8vw,96px);border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(4,1fr)}
.facts div{padding:18px 18px 0 0}
.facts div+div{padding-left:18px;border-left:1px solid var(--line)}
.facts b{display:block;font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--slate);font-weight:400;margin-bottom:6px}
.facts span{font-size:15.5px}
@media (max-width:760px){.facts{grid-template-columns:1fr 1fr}.facts div:nth-child(3){padding-left:0;border-left:0}.facts div{padding-bottom:16px}}

/* sections */
section{padding:clamp(72px,10vw,128px) 0}
.rule{border-top:1px solid var(--line)}
.head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,5vw,72px);align-items:end;margin-bottom:clamp(40px,6vw,72px)}
.head h2{margin-top:18px}
.head p{color:var(--text-2);font-size:18px;max-width:46ch}
@media (max-width:860px){.head{grid-template-columns:1fr}}

/* agents grid */
.agents{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line)}
.agent{display:flex;flex-direction:column;gap:14px;padding:34px clamp(0px,3vw,40px) 40px 0;border-bottom:1px solid var(--line);min-height:300px;position:relative}
.agent:nth-child(even){padding-left:clamp(20px,3vw,40px);border-left:1px solid var(--line)}
.agent .n{font-family:var(--mono);font-size:12.5px;color:var(--slate);letter-spacing:.06em}
.agent p{color:var(--text-2);max-width:44ch}
.agent .more{margin-top:auto;font-size:15px;font-weight:500;display:inline-flex;gap:8px;align-items:center}
.agent .more .arr{transition:transform .2s}
.agent:hover .more .arr{transform:translateX(4px)}
.agent:hover h3{color:var(--cobalt)}
.agent h3{transition:color .2s}
@media (max-width:760px){.agents{grid-template-columns:1fr}.agent:nth-child(even){padding-left:0;border-left:0}.agent{min-height:0}}

/* loop */
.loop{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.loop li{list-style:none;padding:26px 24px 0 0}
.loop li+li{padding-left:24px;border-left:1px solid var(--line)}
.loop .n{font-family:var(--mono);font-size:12.5px;color:var(--cobalt);letter-spacing:.06em}
.loop h4{font-family:var(--serif);font-weight:400;font-size:26px;margin:10px 0 8px;letter-spacing:-.01em}
.loop p{color:var(--text-2);font-size:16px}
ol.loop{margin:0;padding:0}
@media (max-width:860px){.loop{grid-template-columns:1fr 1fr}.loop li:nth-child(3){padding-left:0;border-left:0}.loop li{padding-bottom:22px}}
@media (max-width:520px){.loop{grid-template-columns:1fr}.loop li+li{padding-left:0;border-left:0;border-top:1px solid var(--line)}}

/* security split */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(32px,6vw,96px)}
.split h2{margin:18px 0 22px}
.split .body{color:var(--text-2);font-size:18px;max-width:44ch}
.controls{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.controls li{display:flex;justify-content:space-between;gap:16px;padding:15px 0;border-bottom:1px solid var(--line);font-size:16.5px}
.controls li span:last-child{font-family:var(--mono);font-size:12px;color:var(--cobalt);letter-spacing:.06em;text-transform:uppercase;white-space:nowrap}
@media (max-width:860px){.split{grid-template-columns:1fr}}

/* night (engineering) */
.night{background:var(--night);color:#fff}
.night .label{color:var(--night-text)}
.night .head p{color:var(--night-text)}
.spec{display:grid;grid-template-columns:200px 1fr;border-top:1px solid var(--night-line);margin:0}
.spec dt,.spec dd{padding:24px 0;border-bottom:1px solid var(--night-line);margin:0}
.spec dt{font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--cobalt-l);padding-top:28px}
.spec dd{color:#D5DAE4;font-size:17px;max-width:70ch}
@media (max-width:700px){.spec{grid-template-columns:1fr}.spec dt{border-bottom:0;padding-bottom:0}}
.labs{display:flex;flex-wrap:wrap;gap:12px 34px;align-items:center;margin-top:clamp(48px,6vw,72px);padding-top:28px;border-top:1px solid var(--night-line);font-family:var(--serif);font-size:clamp(20px,2vw,26px);color:#fff}
.labs .mono{color:var(--night-text);font-family:var(--mono);font-size:12.5px;margin-right:6px}

/* team */
.team .pedigree{display:flex;flex-wrap:wrap;gap:10px 30px;margin-top:36px;font-family:var(--serif);font-size:clamp(22px,2.4vw,30px);color:var(--ink)}

/* openings */
.open{background:var(--paper-2)}
.open .inner{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:clamp(32px,6vw,96px);align-items:end}
.open h2{margin:18px 0 20px}
.open p{color:var(--text-2);font-size:18px;max-width:46ch}
.status{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--text-2);margin-bottom:18px}
.status i{width:8px;height:8px;border-radius:50%;background:#C2410C;box-shadow:0 0 0 4px rgba(194,65,12,.14)}
@media (max-width:860px){.open .inner{grid-template-columns:1fr}}

/* agent page */
.crumb{font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--slate)}
.crumb a:hover{color:var(--ink)}
.does{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line)}
.does div{padding:28px 32px 30px 0;border-bottom:1px solid var(--line)}
.does div:nth-child(even){padding-left:32px;border-left:1px solid var(--line)}
.does h3{font-size:24px;margin-bottom:10px}
.does p{color:var(--text-2)}
@media (max-width:760px){.does{grid-template-columns:1fr}.does div:nth-child(even){padding-left:0;border-left:0}}
.next{display:flex;justify-content:space-between;align-items:center;gap:20px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:30px 0}
.next a{font-family:var(--serif);font-size:clamp(26px,3vw,40px);letter-spacing:-.015em}
.next a:hover{color:var(--cobalt)}

/* footer */
footer{background:var(--night);color:var(--night-text);padding:64px 0 34px;font-size:15px}
footer .grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px}
footer svg{height:24px;width:auto;margin-bottom:18px}
footer h4{font-family:var(--mono);font-weight:400;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:#fff;margin:4px 0 14px}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
footer a:hover{color:#fff}
footer .legal{display:flex;justify-content:space-between;gap:16px;margin-top:56px;padding-top:22px;border-top:1px solid var(--night-line);font-family:var(--mono);font-size:12px;letter-spacing:.04em}
@media (max-width:760px){footer .grid{grid-template-columns:1fr 1fr}footer .grid>div:first-child{grid-column:1/-1}}

/* reveal */
.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .7s ease,transform .7s ease}
.js .reveal.in{opacity:1;transform:none}

/* ===== A15: lab-grade hero, live console, product cards ===== */
.nav.over{background:transparent;backdrop-filter:none;-webkit-backdrop-filter:none}
.nav.over .links{color:rgba(255,255,255,.72)}
.nav.over .links a:hover{color:#fff}
.nav.over .links .cta{color:#fff;border-color:rgba(255,255,255,.5)}
.nav.over .links .cta:hover{background:#fff;color:var(--ink)}
.brand .lg-dark{display:none}.nav.over .brand .lg-dark{display:block}.nav.over .brand .lg-light{display:none}
.stage{position:relative;background:#070B16;color:#fff;overflow:hidden;margin-top:-68px;padding-top:68px;isolation:isolate}
.stage::before{content:"";position:absolute;inset:-20% -10% auto -10%;height:120%;z-index:-2;
  background:radial-gradient(48% 42% at 72% 28%,rgba(21,89,245,.55),transparent 70%),radial-gradient(38% 36% at 18% 70%,rgba(91,140,250,.28),transparent 70%),radial-gradient(30% 30% at 90% 85%,rgba(120,80,255,.22),transparent 70%),linear-gradient(180deg,#070B16 0%,#0B1224 60%,#0B1020 100%);
  animation:drift 22s ease-in-out infinite alternate}
.stage::after{content:"";position:absolute;inset:0;z-index:-1;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:64px 64px;
  -webkit-mask-image:radial-gradient(70% 60% at 50% 30%,#000,transparent 80%);mask-image:radial-gradient(70% 60% at 50% 30%,#000,transparent 80%)}
@keyframes drift{0%{transform:translate3d(0,0,0) scale(1)}100%{transform:translate3d(-3%,2%,0) scale(1.08)}}
.stage .hero{padding:clamp(96px,13vw,170px) 0 0}
.stage .label{color:#AEB7C7}.stage .label::before{background:var(--cobalt-l)}
.stage h1{color:#fff;max-width:none}
.stage h1 em{color:var(--cobalt-l)}
.stage .lede{color:#C9D1DE}
.stage .btn.primary{background:#fff;color:var(--ink)}.stage .btn.primary:hover{background:var(--cobalt-l);color:#fff}
.stage .btn.ghost{border-color:rgba(255,255,255,.22);color:#fff}.stage .btn.ghost:hover{border-color:#fff}
.stage .facts{border-top-color:rgba(255,255,255,.12)}
.stage .facts div+div{border-left-color:rgba(255,255,255,.12)}
.stage .facts b{color:#8F9AB0}.stage .facts span{color:#E6EAF2}

/* console window */
.console{margin:clamp(56px,7vw,88px) auto 0;max-width:980px;border-radius:18px 18px 0 0;background:linear-gradient(180deg,rgba(23,31,54,.92),rgba(13,19,36,.96));border:1px solid rgba(255,255,255,.1);border-bottom:0;box-shadow:0 -1px 0 rgba(255,255,255,.06) inset,0 40px 120px rgba(21,89,245,.35);overflow:hidden;font-size:15px}
.console .bar{display:flex;align-items:center;gap:14px;padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.08)}
.console .dots{display:flex;gap:7px}.console .dots i{width:11px;height:11px;border-radius:50%;background:rgba(255,255,255,.16)}
.console .tabs{display:flex;gap:4px;margin-left:8px;overflow-x:auto;scrollbar-width:none}
.console .tabs button{all:unset;cursor:pointer;font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:#8F9AB0;padding:6px 11px;border-radius:8px;white-space:nowrap}
.console .tabs button[aria-selected="true"]{background:rgba(91,140,250,.16);color:#fff}
.console .live{margin-left:auto;display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11.5px;color:#8F9AB0;letter-spacing:.06em;text-transform:uppercase;white-space:nowrap}
.console .live i{width:7px;height:7px;border-radius:50%;background:#34D399;box-shadow:0 0 0 4px rgba(52,211,153,.15);animation:pulse 2s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 7px rgba(52,211,153,0)}}
.console .body{display:grid;grid-template-columns:1fr 300px;min-height:340px}
.console .feed{padding:22px 24px;display:flex;flex-direction:column;gap:10px;font-family:var(--mono);font-size:13px;color:#C9D1DE}
.console .step{display:flex;gap:12px;align-items:flex-start;opacity:0;transform:translateY(6px);transition:opacity .45s,transform .45s}
.console .step.on{opacity:1;transform:none}
.console .step .k{flex:0 0 74px;color:var(--cobalt-l);text-transform:uppercase;font-size:11.5px;letter-spacing:.06em;padding-top:1px}
.console .step .t{color:#E6EAF2}
.console .step .t s{text-decoration:none;color:#8F9AB0}
.console .side{border-left:1px solid rgba(255,255,255,.08);padding:22px 20px;display:flex;flex-direction:column;gap:14px;background:rgba(255,255,255,.02)}
.console .card{border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:14px;background:rgba(255,255,255,.03);opacity:0;transform:translateY(8px);transition:opacity .5s,transform .5s}
.console .card.on{opacity:1;transform:none}
.console .card .h{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:#8F9AB0;margin-bottom:8px}
.console .card p{font-size:14px;color:#E6EAF2;line-height:1.45}
.console .ask{display:flex;gap:8px;margin-top:12px}
.console .ask span{font-size:13px;padding:7px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.18);color:#C9D1DE}
.console .ask span.yes{background:#fff;color:var(--ink);border-color:#fff;box-shadow:0 0 0 0 rgba(255,255,255,.5);animation:glow 1.8s infinite}
@keyframes glow{50%{box-shadow:0 0 0 6px rgba(255,255,255,0)}}
.console .done{font-family:var(--mono);font-size:11.5px;color:#34D399;letter-spacing:.06em;text-transform:uppercase}
@media (max-width:820px){.console .body{grid-template-columns:1fr}.console .side{border-left:0;border-top:1px solid rgba(255,255,255,.08)}.console .step .k{flex-basis:62px}}

/* product screens on agent cards */
.agent .screen{border-radius:14px;background:linear-gradient(160deg,#0E1630,#0A1022);border:1px solid #1C2540;padding:14px;display:flex;flex-direction:column;gap:8px;margin-bottom:6px;box-shadow:0 18px 40px -24px rgba(11,16,32,.6);transition:transform .35s ease,box-shadow .35s ease}
.agent:hover .screen{transform:translateY(-4px);box-shadow:0 26px 50px -24px rgba(21,89,245,.55)}
.agent .row{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:9px 11px;border-radius:9px;background:rgba(255,255,255,.04);font-size:13.5px;color:#DDE3EE}
.agent .pill{font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;padding:3px 8px;border-radius:999px;white-space:nowrap}
.pill.blue{background:rgba(91,140,250,.18);color:#9DB8FF}.pill.amber{background:rgba(245,158,11,.16);color:#FBBF24}.pill.green{background:rgba(52,211,153,.14);color:#6EE7B7}.pill.ask{background:#fff;color:var(--ink)}

/* statement */
.statement{padding:clamp(96px,13vw,170px) 0}
.statement p{font-family:var(--serif);font-size:clamp(34px,5vw,68px);line-height:1.08;letter-spacing:-.02em;max-width:18ch;text-wrap:balance}
.statement p span{color:var(--slate)}

/* marquee of labs */
.marquee{overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);margin-top:clamp(48px,6vw,72px);padding-top:28px;border-top:1px solid var(--night-line)}
.marquee .track{display:flex;gap:64px;width:max-content;animation:roll 30s linear infinite;font-family:var(--serif);font-size:clamp(26px,3vw,40px);color:#fff}
.marquee .track span{opacity:.85}
@keyframes roll{to{transform:translateX(-50%)}}
.marquee-label{font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--night-text);margin-top:clamp(48px,6vw,72px)}
.marquee-label+.marquee{margin-top:18px}
.nav.over.scrolled{background:rgba(7,11,22,.74);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom-color:rgba(255,255,255,.08)}
.console .body{min-height:300px}

/* ===== A16: engineering lab ===== */
/* trace console */
.console .thead{display:grid;grid-template-columns:64px 56px 170px 1fr 64px;gap:12px;padding:9px 24px;border-bottom:1px solid rgba(255,255,255,.06);font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:#6F7A90}
.console .body{grid-template-columns:1fr 290px;min-height:330px}
.console .feed{gap:2px;padding:12px 24px 18px}
.console .tr{display:grid;grid-template-columns:64px 56px 170px 1fr 64px;gap:12px;align-items:baseline;padding:5px 0;font-family:var(--mono);font-size:12.5px;opacity:0;transform:translateY(4px);transition:opacity .35s,transform .35s;border-bottom:1px dashed rgba(255,255,255,.04)}
.console .tr.on{opacity:1;transform:none}
.console .tr .ts{color:#6F7A90}
.console .tr .kd{font-size:10.5px;letter-spacing:.06em;text-transform:uppercase}
.console .tr .nm{color:#fff}
.console .tr .ar{color:#9AA5BA;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.console .tr .du{color:#6F7A90;text-align:right}
.k-run .kd{color:#9AA5BA}.k-tool .kd{color:#5B8CFA}.k-model .kd{color:#B794F6}.k-find .kd{color:#FBBF24}.k-gate .kd{color:#34D399}
.k-gate .du{color:#FBBF24!important}
.console .card ul{margin:6px 0 0;padding:0 0 0 16px;font-size:13px;color:#E6EAF2;line-height:1.5}
.console .card .bind{font-family:var(--mono);font-size:11px;color:#6F7A90;margin-top:10px}
@media (max-width:820px){.console .thead{display:none}.console .tr{grid-template-columns:52px 1fr;row-gap:2px}.console .tr .kd{display:none}.console .tr .ar{grid-column:2;white-space:normal}.console .tr .du{grid-column:2;text-align:left}}

/* systems */
.systems{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.sys{display:flex;flex-direction:column;gap:14px;padding:28px;border:1px solid var(--line);border-radius:18px;background:#fff;transition:border-color .25s,box-shadow .25s,transform .25s}
.sys:hover{border-color:#C9CFDA;box-shadow:0 24px 60px -32px rgba(11,16,32,.35);transform:translateY(-2px)}
.sys-top{display:flex;justify-content:space-between;align-items:center}
.sys .n{font-family:var(--mono);font-size:12.5px;color:var(--slate)}
.tag{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--cobalt);background:rgba(21,89,245,.08);padding:4px 9px;border-radius:999px}
.sys p{color:var(--text-2)}
.sys .more{margin-top:auto;font-size:15px;font-weight:500;display:inline-flex;gap:8px}
.sys:hover .arr{transform:translateX(4px)}.sys .arr{transition:transform .2s}
@media (max-width:860px){.systems{grid-template-columns:1fr}}
.sheet{width:100%;border-collapse:collapse;font-size:14px;margin:6px 0}
.sheet caption{text-align:left;color:var(--slate);padding-bottom:8px;font-size:11px}
.sheet th{text-align:left;font-family:var(--mono);font-weight:400;font-size:11.5px;letter-spacing:.05em;text-transform:uppercase;color:var(--slate);padding:9px 14px 9px 0;border-top:1px solid var(--line);white-space:nowrap;vertical-align:top;width:1%}
.sheet td{padding:9px 0;border-top:1px solid var(--line);color:var(--ink)}
.sheet .ok{display:inline-block;width:7px;height:7px;border-radius:50%;background:#10B981;margin-right:8px;vertical-align:1px}

/* architecture */
.arch{margin:0;border:1px solid var(--night-line);border-radius:18px;background:linear-gradient(180deg,#0C1328,#0A1020);padding:clamp(12px,2vw,24px);overflow-x:auto}
.arch svg{display:block;width:100%;min-width:760px;height:auto}
.arch .box rect{fill:#111A33;stroke:rgba(255,255,255,.12)}
.arch .box.hot>rect{fill:#122046;stroke:rgba(91,140,250,.55)}
.arch .sub{fill:rgba(255,255,255,.04)!important;stroke:rgba(255,255,255,.08)!important}
.arch .h{fill:#8F9AB0;font-size:11px;letter-spacing:.08em}
.arch .bus rect{fill:rgba(52,211,153,.07);stroke:rgba(52,211,153,.3)}
.arch .bus .h{fill:#6EE7B7}
.arch figcaption{color:var(--night-text);margin-top:12px;font-size:11px}
.code{margin-top:28px;border:1px solid var(--night-line);border-radius:14px;background:#0A0F1E;overflow:hidden}
.code-bar{display:flex;align-items:center;gap:14px;padding:10px 14px;border-bottom:1px solid var(--night-line);color:var(--night-text)}
.code-bar .dots{display:flex;gap:7px}.code-bar .dots i{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.14)}
.code pre{margin:0;padding:20px 22px;overflow-x:auto;font-family:var(--mono);font-size:13.5px;line-height:1.7;color:#D5DAE4}
.code .c{color:#8F9AB0}.code .k{color:#B794F6}.code .s{color:#86EFAC}.code .f{color:#93C5FD}

/* invariants */
.inv{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line)}
.inv li{padding:26px 26px 28px 0;border-bottom:1px solid var(--line)}
.inv li:not(:nth-child(3n+1)){padding-left:26px;border-left:1px solid var(--line)}
.inv .id{font-family:var(--mono);font-size:12px;color:var(--cobalt);letter-spacing:.06em}
.inv h4{font-family:var(--serif);font-weight:400;font-size:25px;margin:10px 0 8px;letter-spacing:-.01em}
.inv p{color:var(--text-2);font-size:16px}
@media (max-width:900px){.inv{grid-template-columns:1fr 1fr}.inv li:not(:nth-child(3n+1)){padding-left:0;border-left:0}.inv li:nth-child(even){padding-left:24px;border-left:1px solid var(--line)}}
@media (max-width:560px){.inv{grid-template-columns:1fr}.inv li:nth-child(even){padding-left:0;border-left:0}}

/* research */
.research{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.rc{border:1px solid var(--line);border-radius:16px;padding:24px;background:#fff;display:flex;flex-direction:column;gap:14px}
.rc h3{font-size:23px}
.rc p{color:var(--text-2);font-size:15.5px}
@media (max-width:1000px){.research{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.research{grid-template-columns:1fr}}
.split h2{margin:18px 0 22px}
.ped{border-top:1px solid var(--line)}
.ped-row{display:grid;grid-template-columns:200px 1fr;gap:24px;align-items:center;padding:30px 0;border-bottom:1px solid var(--line)}
.ped-names{display:flex;flex-wrap:wrap;gap:12px 44px;font-family:var(--serif);font-size:clamp(28px,3.4vw,46px);letter-spacing:-.015em;line-height:1.1;color:var(--ink)}
@media (max-width:700px){.ped-row{grid-template-columns:1fr;gap:14px}}
.rc .tag,.sys .tag{align-self:flex-start}

/* ===== A17: dark lab, end to end ===== */
:root{--paper:#05070D;--paper-2:#0A0F1C;--ink:#F3F5F9;--text-2:#A9B3C6;--slate:#7C879C;--line:rgba(255,255,255,.08);--night:#070B16;--night-line:rgba(255,255,255,.08)}
html{color-scheme:dark}
body{background:var(--paper);color:var(--ink)}
::selection{background:rgba(91,140,250,.35)}
.nav,.nav.scrolled{background:rgba(5,7,13,.62);backdrop-filter:saturate(1.4) blur(16px);-webkit-backdrop-filter:saturate(1.4) blur(16px)}
.nav.over{background:transparent;backdrop-filter:none;-webkit-backdrop-filter:none}
.nav.over.scrolled,.nav.scrolled{border-bottom-color:rgba(255,255,255,.07)}
.brand .lg-light{display:none!important}.brand .lg-dark{display:block!important}
.links{color:rgba(255,255,255,.66)}.links a:hover{color:#fff}
.links .cta{color:#fff;border-color:rgba(255,255,255,.35)}.links .cta:hover{background:#fff;color:#05070D}
.btn.primary{background:#fff;color:#05070D}.btn.primary:hover{background:var(--cobalt-l);color:#fff}
.btn.ghost{border-color:rgba(255,255,255,.18);color:#fff}.btn.ghost:hover{border-color:#fff}
.label{color:var(--slate)}.label::before{background:var(--cobalt-l)}
section{position:relative;isolation:isolate}
.rule{border-top:1px solid var(--line)}
#systems::before,#invariants::before,#research::before,#safety::before,#team::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none}
#systems::before{background:radial-gradient(50% 45% at 85% 10%,rgba(21,89,245,.16),transparent 70%)}
#invariants::before{background:radial-gradient(45% 50% at 10% 30%,rgba(120,80,255,.10),transparent 70%)}
#research::before{background:radial-gradient(50% 50% at 90% 60%,rgba(21,89,245,.12),transparent 70%)}
#safety::before{background:radial-gradient(40% 50% at 15% 50%,rgba(52,211,153,.07),transparent 70%)}
#team::before{background:radial-gradient(55% 60% at 50% 100%,rgba(21,89,245,.14),transparent 70%)}
.night{background:linear-gradient(180deg,#070B16,#0A1022 50%,#070B16)}
.sys,.rc{background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.012));border:1px solid rgba(255,255,255,.09);backdrop-filter:blur(6px)}
.sys:hover,.rc:hover{border-color:rgba(91,140,250,.45);box-shadow:0 30px 80px -40px rgba(21,89,245,.6),inset 0 1px 0 rgba(255,255,255,.06);transform:translateY(-2px)}
.rc{transition:border-color .25s,box-shadow .25s,transform .25s}
.tag{background:rgba(91,140,250,.13);color:#A9C1FF}
.sheet td{color:var(--ink)}
.sheet th,.sheet td{border-top-color:rgba(255,255,255,.07)}
.controls li span:last-child{color:#A9C1FF}
.inv .id{color:#A9C1FF}
.open{background:radial-gradient(60% 120% at 85% 100%,rgba(21,89,245,.28),transparent 60%),linear-gradient(180deg,#0A0F1C,#070B16)}
footer{background:#03050A;border-top:1px solid rgba(255,255,255,.06)}
.ped-names{color:#fff}
.next a:hover,.sys:hover h3{color:var(--cobalt-l)}
.skip:focus{background:#05070D;color:#fff}
.stage{background:#05070D}
.stage + section{border-top:0}

/* ===== A18: security ===== */
.sec-grid{display:grid;grid-template-columns:1fr 1.25fr 1fr;gap:18px}
.panel{border:1px solid rgba(255,255,255,.09);border-radius:18px;padding:22px;background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.01))}
.panel-h{color:var(--slate);font-size:11.5px;margin-bottom:14px}
.threats,.fw{list-style:none;margin:0;padding:0}
.threats li{display:flex;gap:14px;align-items:baseline;padding:11px 0;border-top:1px solid rgba(255,255,255,.07);font-size:15.5px}
.threats .id,.threat-grid .id{font-family:var(--mono);font-size:11.5px;color:#FCA5A5;letter-spacing:.06em}
.threats b{font-weight:500}
.fw li{display:flex;flex-direction:column;gap:3px;padding:12px 0;border-top:1px solid rgba(255,255,255,.07)}
.fw b{font-weight:500}.fw span{font-family:var(--mono);font-size:11.5px;color:var(--slate)}
@media (max-width:1000px){.sec-grid{grid-template-columns:1fr}}
.threat-grid h3{margin:8px 0 8px}
.tbl{overflow-x:auto;border:1px solid rgba(255,255,255,.09);border-radius:16px;padding:6px 22px;background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.01))}
.sheet.wide{min-width:720px}
.sheet.wide thead th{font-size:11px;color:#6F7A90;border-top:0;padding-top:16px}
.sheet.wide td{padding:14px 18px 14px 0;vertical-align:top;color:#D5DAE4;line-height:1.55}
.sheet.wide th{padding:14px 18px 14px 0}
.sheet.wide tbody th{color:#A9C1FF}
.sheet.wide td.mono{font-size:11.5px;color:var(--slate);white-space:nowrap}
.sheet b{font-weight:500;color:#fff}
.stage .btn.primary,.btn.primary{color:#05070D}
.stage .btn.primary:hover,.btn.primary:hover{color:#fff}
.sheet th.cite{text-transform:none;letter-spacing:.02em}
.stage .hero .wrap>.actions:last-child{padding-bottom:clamp(72px,10vw,128px)}