/* ===== FONTS (self-hosted, Latin subset) ===== */
@font-face{font-family:"Inter";font-weight:100 900;font-style:normal;font-display:swap;src:url("/fonts/inter-var.woff2") format("woff2")}
@font-face{font-family:"Newsreader";font-weight:700;font-style:normal;font-display:swap;src:url("/fonts/newsreader-700.woff2") format("woff2")}

/* ===== TOKENS ===== */
:root{
  --paper:#F5F3EE;--ink:#0B0B0B;--charcoal:#1A1A1A;--rule:#D9D5CC;--muted:#4A4A45;--amber:#F2A900;
  --paper-2:#ECE9E1;--amber-soft:#FBE7B0;
  --serif:"Newsreader","Source Serif 4",Georgia,serif;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  --gutter:16px;--sec:56px;--ease:160ms ease;
}
@media (min-width:768px){:root{--gutter:24px;--sec:80px}}
@media (min-width:1120px){:root{--sec:96px}}

/* ===== BASE ===== */
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth;scroll-padding-top:72px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.55}
@media (min-width:768px){body{font-size:18px}}
img,svg{max-width:100%}
svg{display:block;height:auto}
h1,h2{font-family:var(--serif);font-weight:700;letter-spacing:-.01em;margin:0}
h1{font-size:34px;line-height:1.1}
h2{font-size:28px;line-height:1.15;margin-top:8px}
h3{font-family:var(--sans);font-size:20px;line-height:1.3;font-weight:700;margin:32px 0 8px}
@media (min-width:768px){h1{font-size:56px;line-height:1.06}h2{font-size:40px;line-height:1.12}h3{font-size:24px}}
p{margin:0 0 16px;max-width:680px}
ul,ol{margin:0 0 16px;padding:0}
a{color:inherit;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;transition:text-decoration-thickness var(--ease)}
a:hover{text-decoration-thickness:2px}
small,.small{font-size:14px;line-height:1.5}
@media (min-width:768px){small,.small{font-size:15px}}
.muted{color:var(--muted)}
:focus-visible{outline:3px solid var(--ink);outline-offset:2px}
.on-dark :focus-visible,.dark :focus-visible{outline-color:var(--amber)}
.wrap{max-width:1120px;margin:0 auto;padding:0 var(--gutter)}
.text{max-width:680px}
.label{display:block;font-size:14px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
@media (min-width:768px){.label{font-size:15px}}
.dark .label{color:var(--paper)}
section{padding:var(--sec) 0;border-top:1px solid var(--rule)}
/* Below-the-fold sections skip rendering until near the viewport. Intrinsic heights are measured so anchor jumps land close. */
section:not(.hero){content-visibility:auto}
#problem{contain-intrinsic-size:auto 2192px}#approach{contain-intrinsic-size:auto 1225px}#nodes{contain-intrinsic-size:auto 2474px}#how{contain-intrinsic-size:auto 2317px}#bandwidth{contain-intrinsic-size:auto 3319px}#specs{contain-intrinsic-size:auto 2209px}#shared{contain-intrinsic-size:auto 1500px}#robotics{contain-intrinsic-size:auto 942px}#inclusion{contain-intrinsic-size:auto 811px}#runtime{contain-intrinsic-size:auto 4641px}#next{contain-intrinsic-size:auto 826px}#partner{contain-intrinsic-size:auto 1187px}#sources{contain-intrinsic-size:auto 2171px}#faq{contain-intrinsic-size:auto 559px}#contact{contain-intrinsic-size:auto 692px}
@media (min-width:768px){#problem{contain-intrinsic-size:auto 1244px}#approach{contain-intrinsic-size:auto 733px}#nodes{contain-intrinsic-size:auto 1193px}#how{contain-intrinsic-size:auto 1445px}#bandwidth{contain-intrinsic-size:auto 1854px}#specs{contain-intrinsic-size:auto 1121px}#shared{contain-intrinsic-size:auto 946px}#robotics{contain-intrinsic-size:auto 815px}#inclusion{contain-intrinsic-size:auto 640px}#runtime{contain-intrinsic-size:auto 2856px}#next{contain-intrinsic-size:auto 639px}#partner{contain-intrinsic-size:auto 882px}#sources{contain-intrinsic-size:auto 975px}#faq{contain-intrinsic-size:auto 557px}#contact{contain-intrinsic-size:auto 541px}}
@media (min-width:1120px){#problem{contain-intrinsic-size:auto 1188px}#approach{contain-intrinsic-size:auto 775px}#nodes{contain-intrinsic-size:auto 1079px}#how{contain-intrinsic-size:auto 1083px}#bandwidth{contain-intrinsic-size:auto 1912px}#specs{contain-intrinsic-size:auto 1065px}#shared{contain-intrinsic-size:auto 834px}#robotics{contain-intrinsic-size:auto 547px}#inclusion{contain-intrinsic-size:auto 592px}#runtime{contain-intrinsic-size:auto 2583px}#next{contain-intrinsic-size:auto 639px}#partner{contain-intrinsic-size:auto 743px}#sources{contain-intrinsic-size:auto 803px}#faq{contain-intrinsic-size:auto 557px}#contact{contain-intrinsic-size:auto 541px}}
section.alt{background:var(--paper-2)}
section.dark{background:var(--ink);color:var(--paper);border-top:0}
section.dark.charcoal{background:var(--charcoal)}
.skip{position:absolute;left:8px;top:-60px;background:var(--ink);color:var(--paper);padding:12px 16px;z-index:100;border-radius:8px}
.skip:focus{top:8px;outline-color:var(--amber)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ===== COMPONENT: buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:10px 24px;border-radius:999px;border:2px solid transparent;font:600 17px/1.25 var(--sans);text-decoration:none;text-align:center;max-width:100%;transition:background-color var(--ease),box-shadow var(--ease),transform var(--ease)}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--charcoal);box-shadow:inset 0 0 0 3px var(--amber)}
.btn-primary:active{transform:translateY(2px)}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--paper-2)}
.btn-outline:active{transform:translateY(2px)}
.dark .btn-primary,.btn-amber{background:var(--amber);color:var(--ink)}
.dark .btn-primary:hover,.btn-amber:hover{background:var(--amber);box-shadow:inset 0 0 0 3px var(--paper)}
.dark .btn-outline{border-color:var(--paper);color:var(--paper)}
.dark .btn-outline:hover{background:var(--charcoal)}
.btn-link{min-height:44px;padding:8px 0;border-radius:0;color:inherit;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;border:0}
.btn-link:hover{text-decoration:underline;text-decoration-thickness:2px}
.btn.is-disabled{background:transparent;color:var(--muted);border:2px dashed var(--muted);font-size:15px;font-weight:600;cursor:not-allowed;white-space:normal;line-height:1.3;min-height:44px}
.dark .btn.is-disabled{color:var(--paper);border-color:var(--paper)}
.btns{display:flex;flex-wrap:wrap;gap:12px 16px;align-items:center;margin:24px 0}
.btns>*{max-width:100%}

/* ===== COMPONENT: badges and tags ===== */
.badge{display:inline-flex;align-items:center;min-height:36px;padding:4px 16px;border:2px solid var(--amber);border-radius:999px;font-size:14px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--paper)}
.tag{display:inline-flex;align-items:center;min-height:32px;padding:2px 14px;border:2px solid var(--ink);border-radius:999px;font-size:14px;font-weight:600;background:var(--paper)}
.status{display:inline-flex;align-items:center;gap:10px;font-weight:600}
.status svg{flex:none}

/* ===== COMPONENT: header ===== */
.site-header{position:sticky;top:0;z-index:50;background:var(--paper);border-bottom:1px solid var(--rule);height:56px}
.site-header.scrolled{box-shadow:0 2px 10px rgba(11,11,11,.08)}
.site-header .bar{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:19px;text-decoration:none;min-height:44px}
.brand svg{width:32px;height:32px}
.nav-inline{display:none}
.menu summary{list-style:none;display:inline-flex;align-items:center;min-height:44px;padding:0 20px;border:2px solid var(--ink);border-radius:999px;font-weight:600;font-size:16px;cursor:pointer}
.menu summary::-webkit-details-marker{display:none}
.menu[open] summary{background:var(--ink);color:var(--paper)}
.menu-panel{position:fixed;left:0;right:0;top:56px;background:var(--paper);border-bottom:1px solid var(--rule);max-height:calc(100vh - 56px);overflow:auto;padding:8px var(--gutter) 16px}
.menu-panel ul{list-style:none;margin:0}
.menu-panel a{display:flex;align-items:center;min-height:48px;border-bottom:1px solid var(--rule);text-decoration:none;font-size:18px;font-weight:500}
@media (min-width:1120px){
  .site-header{height:64px}
  .menu{display:none}
  .nav-inline{display:flex;gap:4px}
  .nav-inline a{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;text-decoration:none;font-weight:500;font-size:16px;border-radius:999px}
  .nav-inline a:hover{background:var(--paper-2)}
}

/* ===== HERO ===== */
.hero{padding:48px 0 var(--sec)}
.hero .grid{display:grid;gap:40px}
.hero .sub{font-size:18px;max-width:560px}
.hero .meta{font-size:14px;color:var(--paper);max-width:560px}
.hero h1{margin:24px 0 20px}
.panel{background:var(--paper);color:var(--ink);border-radius:12px;padding:8px}
.panel svg{width:100%;max-width:560px;margin:0 auto}
@media (min-width:768px){.panel{padding:24px}.hero .meta{font-size:15px}}
@media (min-width:1120px){.hero .grid{grid-template-columns:1fr 1fr;align-items:center;gap:48px}}

/* ===== TILES ===== */
.tiles{display:grid;gap:16px;margin:40px 0 24px}
.tile{border:2px solid var(--ink);border-top:8px solid var(--amber);border-radius:12px;padding:24px;background:var(--paper);display:flex;flex-direction:column;gap:12px}
.tile .num{font-family:var(--serif);font-weight:700;font-size:64px;line-height:1}
.tile .reads{font-weight:600;font-size:18px;margin:0;line-height:1.35}
.tile .means{margin:0;font-size:14px;color:var(--muted)}
.tile svg{width:100%;max-width:360px}
@media (min-width:768px){.tiles{grid-template-columns:repeat(3,1fr);gap:24px}.tile .num{font-size:88px}.tile .means{font-size:15px}}
.serif-line{font-family:var(--serif);font-style:normal;font-weight:700;font-size:22px;line-height:1.3;margin:24px 0 8px;max-width:760px}
@media (min-width:768px){.serif-line{font-size:28px}}
.marks{list-style:none}
.marks li{position:relative;padding-left:28px;margin-bottom:12px;max-width:680px}
.marks li::before{content:"";position:absolute;left:0;top:.62em;width:12px;height:12px;background:var(--amber);border:2px solid var(--ink)}
.dark .marks li::before{border-color:var(--amber)}

/* ===== LAYOUT HELPERS ===== */
.cols-2{display:grid;gap:32px}
@media (min-width:768px){.cols-2{grid-template-columns:1fr 1fr;gap:48px}}
.cards-3{display:grid;gap:16px;margin:32px 0 16px}
@media (min-width:768px){.cards-3{grid-template-columns:repeat(3,1fr);gap:24px}}

/* ===== NODE CARDS ===== */
.node-card{position:relative;border:1px solid var(--rule);background:var(--paper);border-radius:12px;padding:20px;display:flex;flex-direction:column;gap:8px}
.node-card .tag{align-self:flex-end}
.node-card svg{width:100%;max-width:320px;margin:0 auto}
.node-card h3{margin:8px 0 0}
.node-card dl{margin:0}
.node-card dt{font-size:14px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-top:12px}
.node-card dd{margin:4px 0 0}
.shared-bar{background:var(--charcoal);color:var(--paper);border-radius:12px;padding:16px 20px;text-align:center;font-weight:700;font-size:18px;margin:0 0 16px;max-width:none}
@media (min-width:768px){.shared-bar{font-size:22px}}

/* ===== TABLES ===== */
.tbl{width:100%;border-collapse:collapse;font-size:17px;line-height:1.45;margin:16px 0}
.tbl caption{text-align:left;font-weight:700;padding-bottom:8px}
.tbl th,.tbl td{text-align:left;vertical-align:top;padding:12px 16px 12px 0;border-bottom:1px solid var(--rule)}
.tbl thead th{border-bottom:2px solid var(--ink);font-weight:700}
.tbl tbody th{font-weight:600;overflow-wrap:normal}
@media (min-width:768px){.tbl tbody th{min-width:150px}}
@media (max-width:767px){
  .tbl,.tbl tbody,.tbl tr,.tbl td,.tbl th{display:block}
  .tbl thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
  .tbl tr{border:1px solid var(--rule);border-radius:12px;padding:12px 16px;margin-bottom:12px;background:var(--paper)}
  .tbl th,.tbl td{border:0;padding:4px 0}
  .tbl tbody th{font-size:19px;font-weight:700;padding-bottom:8px}
  .tbl td[data-label]::before{content:attr(data-label);display:block;font-size:14px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
}
.only-desktop{display:none}
@media (min-width:768px){.only-desktop{display:table}.only-mobile{display:none!important}}

/* ===== SPEC CARDS (mobile) ===== */
.spec-card{border:1px solid var(--rule);border-radius:12px;padding:16px;margin-bottom:12px;background:var(--paper)}
.spec-card h3{margin:0 0 8px}
.spec-card div{display:flex;justify-content:space-between;gap:16px;border-top:1px solid var(--rule);padding:8px 0}
.spec-card dt{color:var(--muted)}
.spec-card dd{margin:0;text-align:right}
.spec-card dl{margin:0}

/* ===== FORMULA, STRIP, STEPS ===== */
.formula{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;margin:24px 0;max-width:none}
.chip{display:inline-flex;align-items:center;min-height:48px;padding:8px 16px;border:2px solid var(--ink);border-radius:12px;font-weight:700;font-size:18px;background:var(--paper)}
.chip.amber{background:var(--amber)}
.formula .op{font-size:26px;font-weight:700}
.power{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);margin:16px 0;max-width:420px;border:2px solid var(--ink);border-radius:12px;overflow:hidden}
.power li{padding:12px 8px;text-align:center;font-weight:600;border-left:2px solid var(--ink)}
.power li:first-child{border-left:0}
.power li:nth-child(2){background:var(--paper-2)}
.power li:nth-child(3){background:var(--amber)}
.steps{list-style:none;display:grid;gap:12px;margin:16px 0}
.steps li{border:1px solid var(--rule);border-radius:12px;padding:16px;background:var(--paper)}
.steps b{display:block;font-size:14px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.steps .res{font-weight:700;font-size:20px;margin-top:4px}
@media (min-width:768px){.steps{grid-template-columns:repeat(3,1fr)}}

/* ===== CHARTS ===== */
.charts{display:grid;gap:32px;margin:24px 0}
@media (min-width:768px){.charts{grid-template-columns:1fr 1fr}}
.chart{margin:0}
.chart h3{margin:0 0 8px;font-size:20px}
.chart svg{width:100%}
.pairs{display:grid;grid-template-columns:1fr 1fr;text-align:center;gap:8px;margin-top:4px;font-size:14px;line-height:1.4}
@media (min-width:768px){.pairs{font-size:15px}}
.pairs p{margin:0;max-width:none;text-wrap:balance}
.note-box{border:2px solid var(--muted);border-radius:12px;padding:16px 20px;max-width:680px}
.note-box p{margin:0}

/* ===== RESULTS SLOTS ===== */
.slots{display:grid;gap:16px;margin:24px 0}
@media (min-width:768px){.slots{grid-template-columns:1fr 1fr}}
.slot{margin:0}
.slot svg{width:100%}
.slot figcaption{font-size:14px;color:var(--muted);margin-top:4px}

/* ===== DEFINITION ROWS ===== */
.defs{display:grid;gap:16px;margin:24px 0}
@media (min-width:768px){.defs{grid-template-columns:1fr 1fr}}
.def{display:flex;gap:16px;border:1px solid var(--rule);border-radius:12px;padding:20px;background:var(--paper)}
.def svg{flex:none;width:44px;height:44px}
.def dt{font-weight:700}
.def dd{margin:4px 0 0}
dl{margin:0}

/* ===== HOW IT WORKS BLOCKS ===== */
.blocks{display:grid;gap:40px;margin-top:32px}
@media (min-width:768px){.blocks{grid-template-columns:1fr 1fr;gap:48px 56px}}
.block{display:grid;gap:12px;align-content:start}
.block svg{width:48px;height:48px}
.block h3{margin:0}
.block p,.block ul{margin-bottom:0}

/* ===== TIMELINE ===== */
.timeline{list-style:none;margin:24px 0;max-width:760px}
.timeline li{display:grid;grid-template-columns:28px 1fr;gap:4px 16px;padding:0 0 28px;position:relative}
.timeline li::before{content:"";position:absolute;left:13px;top:30px;bottom:0;border-left:2px solid var(--rule)}
.timeline li:last-child::before{display:none}
.timeline .st{display:flex}
.timeline h3{margin:0;font-size:20px}
.timeline p{margin:4px 0 0}

/* ===== INCLUSION ===== */
.pull{font-family:var(--serif);font-weight:700;font-size:28px;line-height:1.22;margin:24px 0;max-width:900px}
@media (min-width:768px){.pull{font-size:40px}}
.infra{font-size:20px;font-weight:600;max-width:680px;margin-bottom:32px}

/* ===== PARTNER ===== */
.talk{font-family:var(--serif);font-weight:700;font-size:34px;line-height:1.1;margin:40px 0 12px}
@media (min-width:768px){.talk{font-size:56px}}

/* ===== ACCORDION ===== */
.faq details{border-bottom:1px solid var(--rule)}
.faq details:first-child{border-top:1px solid var(--rule)}
.faq summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;padding:8px 0;font-weight:600;font-size:18px;cursor:pointer}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:none;width:20px;height:20px;background:linear-gradient(var(--ink),var(--ink)) center/20px 2px no-repeat,linear-gradient(var(--ink),var(--ink)) center/2px 20px no-repeat}
.faq details[open] summary::after{background:linear-gradient(var(--ink),var(--ink)) center/20px 2px no-repeat}
.faq .ans{padding:0 0 20px;max-width:680px}
.faq .ans p{margin:0}

/* ===== CONTACT, FOOTER, MISC ===== */
.contact{list-style:none;margin:16px 0;padding:0;display:grid;gap:4px}
.contact li{display:flex;flex-wrap:wrap;gap:4px 12px;align-items:center;min-height:44px;border-bottom:1px solid var(--rule);padding:4px 0}
.contact .k{min-width:96px;font-size:14px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.contact a{display:inline-flex;align-items:center;min-height:44px}
button.btn{cursor:pointer;font-family:var(--sans)}
.site-footer{background:var(--ink);color:var(--paper);padding:40px 0}
.site-footer .wrap{display:flex;gap:16px;align-items:flex-start}
.site-footer svg{flex:none;width:40px;height:40px}
.site-footer p{margin:0;font-size:15px;max-width:640px}
.to-top{position:fixed;right:16px;bottom:16px;width:44px;height:44px;border-radius:999px;background:var(--ink);color:var(--paper);display:flex;align-items:center;justify-content:center;z-index:40;text-decoration:none;border:2px solid var(--paper)}
.to-top[hidden]{display:none}
.src a{overflow-wrap:anywhere}
.tbl td{overflow-wrap:anywhere}


/* ===== SMALL LAYOUT CLASSES ===== */
.lead{margin-top:20px}
.gap-top{margin-top:24px}
.cols-2.top{align-items:start}
h3.first{margin-top:0}
.v5{display:none}
.v8{max-width:440px;width:100%}
.v2{align-self:center}
.v2 svg{max-width:360px;margin:0 auto}
.tag.inline{margin-left:8px;vertical-align:middle;font-size:14px}
.btn.is-disabled.raw{border:0;min-height:44px;padding:0 0 0 8px;font-size:15px}
.faq{margin-top:24px;max-width:820px}
.contact{max-width:680px}
#copy-email{min-height:44px;padding:6px 16px;font-size:15px}
@media (min-width:768px){.v5{display:block}}

/* ===== REDUCED MOTION, PRINT ===== */
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{
  section:not(.hero){content-visibility:visible}
  body{background:#fff;color:#000}
  .site-header,.to-top,.skip,.menu{display:none!important}
  section,section.alt,section.dark,section.dark.charcoal,.site-footer{background:#fff!important;color:#000!important;border-top:1px solid #999}
  .hero .btns,.btns{display:none}
  .panel,.tile,.node-card{border:1px solid #000}
}
.about{display:flex;flex-direction:column;gap:16px}
.portrait{margin:0;order:-1;width:120px}
.portrait img{display:block;width:100%;height:auto;border-radius:8px;border:1px solid var(--rule)}
@media (min-width:768px){.about{flex-direction:row;align-items:flex-start;justify-content:space-between;gap:40px}.about .contact{flex:1;max-width:680px}.portrait{order:1;width:200px;flex:none}}