/* ═══ FONTS — self-hosted, latin subset, OFL ═════════════════════════ */
@font-face{
  font-family:"Inter Tight";font-style:normal;font-weight:400 600;font-display:swap;
  src:url("/assets/fonts/InterTight-400-600-latin.woff2") format("woff2");
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
@font-face{
  font-family:"JetBrains Mono";font-style:normal;font-weight:400;font-display:swap;
  src:url("/assets/fonts/JetBrainsMono-400-latin.woff2") format("woff2");
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}

/* ═══ TOKENS ═══════════════════════════════════════════════════════════ */
:root{
  --bg:#0A0B0D;
  --bg-raised:#111317;
  --bg-inverse:#F4F5F7;
  --line:#1E2126;
  --line-inverse:#DCDFE3;
  --text:#E8EAED;
  --text-body:#C3C8CE;
  --text-muted:#8A9099;          /* 6.1:1 on --bg — passes AA */
  --text-inverse:#0A0B0D;
  --text-inverse-muted:#5B636D;
  --accent:#4ADE9B;              /* 11.5:1 on --bg */
  --accent-ink:#0E9F6E;          /* accent for use on --bg-inverse */
  --accent-dim:rgba(74,222,155,.12);

  --sans:"Inter Tight",-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;

  --maxw:1240px;
  --gutter:clamp(20px,5vw,72px);
  --pad-y:clamp(96px,12vh,176px);
  --ease:cubic-bezier(.16,1,.3,1);
}

/* ═══ BASE ═════════════════════════════════════════════════════════════ */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:18px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3{margin:0;font-weight:600;letter-spacing:-.02em;line-height:1.08}
h1{font-size:clamp(44px,5.5vw,76px)}
h2{font-size:clamp(30px,3.4vw,44px);line-height:1.12}
h3{font-size:21px;letter-spacing:-.015em;line-height:1.3}
p{margin:0 0 18px}
ul{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}

:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
.inverse :focus-visible{outline-color:var(--accent-ink)}

.skip{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--bg-raised);color:var(--text);
  padding:12px 20px;border:1px solid var(--line);
}
.skip:focus{left:var(--gutter);top:12px}

/* ═══ SHARED PRIMITIVES ════════════════════════════════════════════════ */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
.sec{padding:var(--pad-y) 0;border-top:1px solid var(--line)}
section[id]{scroll-margin-top:96px}   /* clear the 76px sticky nav on anchor jumps */
.sec--flush{border-top:0}

.lbl{
  font-family:var(--mono);font-size:11px;font-weight:400;
  letter-spacing:.12em;text-transform:uppercase;color:var(--text-muted);
}
.secnum{display:block;margin-bottom:34px}
.lede{font-size:19px;color:var(--text-body);max-width:62ch}
.body{color:var(--text-body)}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* buttons */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--sans);font-size:15px;font-weight:500;
  padding:13px 22px;border-radius:2px;cursor:pointer;
  border:1px solid var(--accent);color:var(--accent);
  background:transparent;transition:background .15s ease,border-color .15s ease;
}
.btn:hover{background:var(--accent-dim)}
.btn--ghost{
  border-color:transparent;color:var(--text);padding-left:0;padding-right:0;
}
.btn--ghost:hover{background:transparent;color:var(--accent)}
.btn--ghost .arw{transition:transform .15s ease}
.btn--ghost:hover .arw{transform:translateX(4px)}
.inverse .btn{border-color:var(--accent-ink);color:var(--accent-ink)}

/* capability list — hairline rows, mono index left */
.caps{border-top:1px solid var(--line)}
.caps li{
  display:grid;grid-template-columns:44px 1fr;gap:0 20px;
  padding:22px 0;border-bottom:1px solid var(--line);align-items:baseline;
}
.caps .ix{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--text-muted)}
.caps h3{margin-bottom:6px}
.caps p{margin:0;font-size:16px;color:var(--text-body)}

/* ═══ NAV ══════════════════════════════════════════════════════════════ */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:100;
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.nav.stuck{background:rgba(10,11,13,.86);backdrop-filter:blur(14px);border-bottom-color:var(--line)}
.nav__in{
  max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter);
  height:76px;display:flex;align-items:center;gap:28px;
}
.mark{display:flex;align-items:center;gap:11px;flex-shrink:0}
.mark svg{display:block;color:var(--text)}
.mark__w{font-size:17px;font-weight:600;letter-spacing:-.015em;line-height:1}
.mark__a{
  font-family:var(--mono);font-size:9px;letter-spacing:.26em;
  color:var(--text-muted);margin-left:-3px;position:relative;top:-1px;
}
.nav__links{display:flex;gap:26px;margin-left:auto}
.nav__links a{
  font-size:14.5px;color:var(--text-muted);
  transition:color .15s ease;padding:6px 0;
}
.nav__links a:hover,.nav__links a.on{color:var(--text)}
.nav .btn{padding:10px 18px;font-size:14px}
.nav__cta{flex-shrink:0}
.burger{display:none;margin-left:auto;background:none;border:0;padding:10px;cursor:pointer}
.burger span{display:block;width:22px;height:1.5px;background:var(--text);margin:5px 0;transition:transform .2s ease,opacity .2s ease}
.nav.open .burger span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav.open .burger span:nth-child(2){opacity:0}
.nav.open .burger span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

.menu{
  position:fixed;inset:76px 0 0 0;z-index:99;background:var(--bg);
  padding:40px var(--gutter);display:none;flex-direction:column;gap:6px;
}
.menu.show{display:flex}
.menu a{font-size:28px;font-weight:500;letter-spacing:-.02em;padding:14px 0;border-bottom:1px solid var(--line)}
.menu .btn{margin-top:28px;align-self:flex-start;font-size:15px;font-weight:500;padding:13px 22px;border-bottom:1px solid var(--accent)}

/* ═══ 01 HERO ══════════════════════════════════════════════════════════ */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;overflow:hidden}
.hero__bg{
  position:absolute;inset:0;z-index:0;
  background:radial-gradient(120% 90% at 72% 46%,#14181D 0%,var(--bg) 62%);
}
.hero__bg canvas{position:absolute;inset:0;width:100%;height:100%}
.hero .wrap{position:relative;z-index:1;width:100%;padding-top:140px;padding-bottom:80px}
.hero__c{max-width:min(58%,760px)}
.hero .lbl{display:block;margin-bottom:22px}
.hero h1{margin-bottom:28px}
.hero__sub{font-size:20px;color:var(--text-body);max-width:56ch;margin-bottom:40px}
.hero__cta{display:flex;align-items:center;gap:28px;flex-wrap:wrap}
.hero__foot{
  /* absolute children resolve against .wrap's padding box, so inset by the gutter */
  position:absolute;left:var(--gutter);right:var(--gutter);bottom:34px;z-index:1;
  display:flex;justify-content:space-between;gap:20px;
}

/* ═══ 02 THESIS ════════════════════════════════════════════════════════ */
.thesis__grid{
  display:grid;grid-template-columns:1fr 1fr;
  border-top:1px solid var(--line);margin-top:44px;
}
.thesis__grid li{
  padding:34px 40px 34px 0;border-bottom:1px solid var(--line);
}
.thesis__grid li:nth-child(odd){border-right:1px solid var(--line);padding-right:40px}
.thesis__grid li:nth-child(even){padding-left:40px}
.thesis__grid .ix{display:block;margin-bottom:14px}
.thesis__grid h3{margin-bottom:8px}
.thesis__grid p{margin:0;font-size:16.5px;color:var(--text-body)}
.thesis__close{
  margin-top:48px;padding-top:34px;border-top:1px solid var(--line);
  font-size:clamp(22px,2.4vw,30px);font-weight:500;letter-spacing:-.02em;
  line-height:1.3;max-width:22ch;
}

/* ═══ 03 APPROACH ══════════════════════════════════════════════════════ */
.appr__head,.plat__head{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:end}
.appr__cols{
  display:grid;grid-template-columns:repeat(3,1fr);gap:0;
  margin-top:64px;border-top:1px solid var(--line);
}
.appr__cols>div{padding:32px 32px 0 0}
.appr__cols>div+div{border-left:1px solid var(--line);padding-left:32px}
.appr__cols .lbl{display:block;margin-bottom:16px;color:var(--accent)}
.appr__cols h3{margin-bottom:10px}
.appr__cols p{font-size:16px;color:var(--text-body);margin:0}
.appr__viz{margin-top:56px;display:flex;justify-content:center;opacity:.85}

/* ═══ 04 PLATFORM ══════════════════════════════════════════════════════ */
/* two rows: each capability group paired with its own figure */
.plat{
  display:grid;grid-template-columns:minmax(300px,420px) 1fr;
  gap:88px 64px;align-items:start;margin-top:56px;
}
.plat__group>.lbl{display:block;margin-bottom:16px;color:var(--accent)}
.frame{
  border:1px solid var(--line);border-radius:4px;background:var(--bg-raised);
  overflow:hidden;
}
.frame__bar{
  display:flex;align-items:center;gap:8px;
  padding:11px 14px;border-bottom:1px solid var(--line);
}
.frame__dot{width:8px;height:8px;border-radius:50%;background:#22262C}
.frame__t{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;color:var(--text-muted);margin-left:10px;white-space:nowrap}
.frame__tag{
  margin-left:auto;font-family:var(--mono);font-size:9px;letter-spacing:.14em;
  color:var(--text-muted);border:1px solid var(--line);border-radius:2px;padding:2px 7px;
}
.frame__body{display:block;width:100%;height:auto}
.frame__cap{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;
  color:var(--text-muted);margin-top:14px;
}

/* ═══ 05 ENGAGE ════════════════════════════════════════════════════════ */
.eng{display:grid;grid-template-columns:1fr 1fr;margin-top:48px;border-top:1px solid var(--line)}
.eng__col{padding:44px 48px 44px 0}
.eng__col+.eng__col{border-left:1px solid var(--line);padding-left:48px;padding-right:0}
.eng__col .lbl{display:block;margin-bottom:18px;color:var(--accent)}
.eng__col h3{font-size:26px;margin-bottom:16px}
.eng__col p{color:var(--text-body);font-size:16.5px}

/* ═══ 06 WHY NOW ═══════════════════════════════════════════════════════ */
.why{display:grid;grid-template-columns:1fr .92fr;gap:72px;margin-top:48px;align-items:start}
.why__list{border-top:1px solid var(--line)}
.why__list li{padding:26px 0;border-bottom:1px solid var(--line)}
.why__list h3{margin-bottom:6px}
.why__list p{margin:0;font-size:16px;color:var(--text-body)}
.panel{
  background:var(--bg-inverse);color:var(--text-inverse);
  border-radius:4px;padding:44px 40px;
}
.panel .lbl{color:var(--text-inverse-muted);display:block;margin-bottom:22px}
.panel blockquote{
  margin:0 0 26px;font-size:21px;line-height:1.45;
  font-weight:500;letter-spacing:-.015em;
}
.panel .meta{
  font-size:14.5px;color:var(--text-inverse-muted);margin:0;
  padding-top:22px;border-top:1px solid var(--line-inverse);
}

/* ═══ 07 CONTACT ═══════════════════════════════════════════════════════ */
.contact{display:grid;grid-template-columns:1.15fr .85fr;gap:72px;margin-top:48px;align-items:start}
.field{margin-bottom:28px}
.field label{display:block;margin-bottom:10px}
.field input,.field select,.field textarea{
  width:100%;background:transparent;color:var(--text);
  font-family:var(--sans);font-size:16.5px;
  border:0;border-bottom:1px solid var(--line);border-radius:0;
  padding:8px 0;transition:border-color .15s ease;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-bottom-color:var(--accent);
}
.field select{appearance:none;cursor:pointer}
.field select option{background:var(--bg-raised);color:var(--text)}
.field textarea{resize:vertical;min-height:80px}
.f2{display:grid;grid-template-columns:1fr 1fr;gap:0 32px}
.contact__aside dl{margin:0;border-top:1px solid var(--line)}
.contact__aside dt{margin-top:0;padding:20px 0 4px}
.contact__aside dd{margin:0 0 20px;font-size:16px;color:var(--text-body)}
.contact__aside dd+dt{border-top:1px solid var(--line)}

/* ═══ FOOTER ═══════════════════════════════════════════════════════════ */
.foot{border-top:1px solid var(--line);padding:56px 0 44px}
.disc{
  font-size:13.5px;line-height:1.65;color:var(--text-muted);
  max-width:88ch;margin:0 0 44px;
}
.foot__row{display:flex;align-items:center;gap:32px;flex-wrap:wrap;padding-top:32px;border-top:1px solid var(--line)}
.foot__links{display:flex;gap:24px;margin-left:auto;flex-wrap:wrap}
.foot__links a,.foot__c{font-size:14px;color:var(--text-muted);transition:color .15s ease}
.foot__links a:hover{color:var(--text)}

/* ═══ REVEAL ═══════════════════════════════════════════════════════════ */
.rv{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.rv.in{opacity:1;transform:none}

/* ═══ RESPONSIVE ═══════════════════════════════════════════════════════ */
@media (max-width:1100px){
  .plat{grid-template-columns:1fr;gap:44px}
  .why{grid-template-columns:1fr;gap:44px}
  .contact{grid-template-columns:1fr;gap:48px}
}
@media (max-width:860px){
  body{font-size:17px}
  h1{font-size:clamp(32px,8vw,44px)}
  :root{--pad-y:clamp(64px,9vh,96px)}
  .nav__links,.nav__cta{display:none}
  .burger{display:block}
  .hero__c{max-width:100%}
  .hero__foot{position:static;margin-top:56px;flex-direction:column;gap:8px}
  .hero .wrap{padding-top:120px}
  .thesis__grid,.appr__cols,.eng,.f2{grid-template-columns:1fr}
  .thesis__grid li,.thesis__grid li:nth-child(odd),.thesis__grid li:nth-child(even){
    padding:26px 0;border-right:0;
  }
  .appr__head,.plat__head{grid-template-columns:1fr;gap:24px}
  .appr__cols>div{padding:26px 0 0}
  .appr__cols>div+div{border-left:0;border-top:1px solid var(--line);padding-left:0}
  .eng__col,.eng__col+.eng__col{padding:32px 0;border-left:0}
  .eng__col+.eng__col{border-top:1px solid var(--line)}
  .foot__links{margin-left:0;width:100%}
}
@media (max-width:560px){
  .frame__t{display:none}   /* title bar would wrap and double the chrome height */
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .rv{opacity:1;transform:none}
}

/* ═══ PRODUCTION ADDITIONS ═════════════════════════════════════════════ */
.svgdefs{position:absolute;width:0;height:0}
.appr__viz svg{max-width:100%;height:auto}
.hp{display:none}

/* secondary pages: legal, privacy, disclosures, thanks, 404 */
.nav--solid{background:var(--bg);border-bottom-color:var(--line)}
.nav__back{margin-left:auto;font-size:14.5px;color:var(--text-muted);transition:color .15s ease}
.nav__back:hover{color:var(--text)}
.page{padding:150px 0 var(--pad-y);min-height:70vh}
.page h1{font-size:clamp(34px,4vw,52px);margin-bottom:12px}
.page .updated{display:block;margin-bottom:36px}
.prose{max-width:72ch;color:var(--text-body);font-size:17px}
.prose h2{font-size:21px;letter-spacing:-.015em;line-height:1.3;color:var(--text);margin:40px 0 12px}
.prose p{margin:0 0 16px}
.prose ul{list-style:disc;padding-left:22px;margin:0 0 16px}
.prose li{margin-bottom:6px}
.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.prose strong{color:var(--text);font-weight:600}