/* =========================================================
   Applied Intelligence Collective — site styles
   Palette B (Sky & Graphite), institutional / minimal.
   Graphite + white dominant; Sky a quiet accent; Sand minimal.
   ========================================================= */

:root{
  --paper:#FFFFFF;
  --mist:#DCE9F5;
  --mist-2:#F4F8FC;
  --sky:#5C9CE0;
  --sky-dark:#3F7DC0;
  --graphite:#1E2A33;
  --sand:#E8B04B;
  --muted:#5A6B7B;
  --faint:#8A98A5;
  --line:#E6EBF0;
  --maxw:1120px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:"Inter",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--graphite);
  background:var(--paper);
  line-height:1.7;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
::selection{background:var(--sky);color:#fff}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

h1,h2,h3,.brand,.brand-name,.eyebrow,.section-kicker,.nav a,.link-arrow,.btn{
  font-family:"Space Grotesk","Inter",sans-serif;
}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;width:100%}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.82);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:11px;font-weight:600;letter-spacing:-.01em}
.mark{font-family:"Space Grotesk",sans-serif;font-weight:600;color:var(--graphite);letter-spacing:0;font-size:21px}
.mark span{color:var(--sky);margin:0 .12em;font-weight:700}
.brand-name{font-size:17px;color:var(--graphite)}
.nav{display:flex;align-items:center;gap:30px}
.nav a{font-size:13.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:500;transition:color .15s}
.nav a:hover{color:var(--graphite)}
.nav a[aria-current="page"]{color:var(--graphite)}
.nav .nav-apply{
  color:var(--graphite);border:1px solid var(--line);
  padding:9px 18px;border-radius:9px;transition:.15s;
}
.nav .nav-apply:hover{border-color:var(--sky);color:var(--sky-dark)}

/* ---------- generic ---------- */
.eyebrow,.section-kicker{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--faint);font-weight:500;
}
.dot{width:8px;height:8px;border-radius:50%;background:var(--sand);
  box-shadow:0 0 0 4px rgba(232,176,75,.18)}
.muted{color:var(--muted)}
.divider{border:0;border-top:1px solid var(--line)}

.link-arrow{
  display:inline-flex;align-items:center;gap:9px;
  font-weight:600;font-size:16px;color:var(--graphite);
  transition:gap .15s,color .15s;
}
.link-arrow span{color:var(--sky);transition:transform .15s}
.link-arrow:hover{color:var(--sky-dark)}
.link-arrow:hover span{transform:translateX(4px)}
.link-arrow.subtle{color:var(--muted);font-weight:500}
.link-arrow.subtle:hover{color:var(--graphite)}

.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-weight:600;font-size:15.5px;
  padding:14px 26px;border-radius:11px;cursor:pointer;
  border:1px solid transparent;transition:.15s;
}
.btn-primary{background:var(--sky);color:#fff}
.btn-primary:hover{background:var(--sky-dark)}
.btn-light{background:#fff;color:var(--graphite)}
.btn-light:hover{background:var(--mist)}

/* ---------- hero (editorial split) ---------- */
.hero{padding:92px 0 74px}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:60px;align-items:center}
.hero-lead-col .eyebrow{margin-bottom:24px}
.hero-lead em{color:var(--sky-dark);font-style:normal;font-weight:500}

/* right-side "what we study" panel */
.hero-panel{
  background:var(--mist-2);border:1px solid var(--line);border-radius:16px;
  padding:28px 30px 20px;box-shadow:0 1px 2px rgba(30,42,51,.03);
}
.panel-kicker{
  font-family:"Space Grotesk",sans-serif;font-size:12px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--faint);font-weight:500;margin-bottom:4px;
}
.panel-list{list-style:none}
.panel-list li{
  display:grid;grid-template-columns:34px 1fr;align-items:baseline;
  padding:17px 0;border-top:1px solid var(--line);
}
.panel-list li:first-of-type{border-top:0}
.panel-list .pn{font-family:"Space Grotesk",sans-serif;font-weight:600;color:var(--sky);
  font-size:13.5px;font-variant-numeric:tabular-nums}
.panel-list .pl{grid-column:2;font-family:"Space Grotesk",sans-serif;font-weight:600;
  font-size:18px;letter-spacing:-.01em;color:var(--graphite)}
.panel-list .pd{grid-column:2;color:var(--muted);font-size:14px;margin-top:3px}
/* hero panel — label/value facts variant (Research page) */
.panel-facts{list-style:none}
.panel-facts > div{
  display:grid;grid-template-columns:88px 1fr;align-items:baseline;
  padding:15px 0;border-top:1px solid var(--line);
}
.panel-facts > div:first-of-type{border-top:0}
.panel-facts dt{
  font-family:"Space Grotesk",sans-serif;font-size:11.5px;letter-spacing:.06em;
  text-transform:uppercase;color:var(--faint);font-weight:500;
}
.panel-facts dd{
  font-family:"Space Grotesk",sans-serif;font-weight:600;font-size:15.5px;
  letter-spacing:-.01em;color:var(--graphite);
}
.panel-meta{
  display:flex;justify-content:space-between;align-items:center;gap:14px;
  margin-top:12px;padding-top:15px;border-top:1px solid var(--line);
  font-family:"Space Grotesk",sans-serif;font-size:11.5px;letter-spacing:.05em;
  color:var(--faint);font-variant-numeric:tabular-nums;
}

/* opening animation — staged fade-up reveal of the hero */
@keyframes pcRise{
  from{opacity:0;transform:translateY(18px)}
  to{opacity:1;transform:none}
}
.hero .wrap > *{opacity:0;animation:pcRise .7s cubic-bezier(.2,.7,.2,1) forwards}
.hero .wrap > *:nth-child(1){animation-delay:.05s}
.hero .wrap > *:nth-child(2){animation-delay:.12s}
.hero .wrap > *:nth-child(3){animation-delay:.19s}
.hero .wrap > *:nth-child(4){animation-delay:.26s}
.hero .wrap > *:nth-child(5){animation-delay:.33s}
.hero .wrap > *:nth-child(6){animation-delay:.40s}
.hero .wrap > *:nth-child(7){animation-delay:.47s}
.hero .wrap > *:nth-child(8){animation-delay:.54s}
@media (prefers-reduced-motion:reduce){
  .hero .wrap > *{opacity:1;animation:none}
}

/* full-screen opening intro — plays on open / refresh only (gated in intro.js) */
.pc-intro{
  position:fixed;inset:0;z-index:1000;background:var(--graphite);
  display:flex;align-items:center;justify-content:center;text-align:center;
  will-change:transform;
}
.pc-intro-inner{display:flex;flex-direction:column;align-items:center}
.pc-intro-mark{
  font-family:"Space Grotesk",sans-serif;font-weight:700;line-height:1;
  font-size:clamp(64px,12vw,132px);letter-spacing:0;color:#fff;
}
.pc-intro-mark span{display:inline-block;opacity:0}
.pc-intro-mark .br-l{font-weight:600;animation:pcBrL .5s cubic-bezier(.22,1,.36,1) .05s forwards}
.pc-intro-mark .br-r{font-weight:600;animation:pcBrR .5s cubic-bezier(.22,1,.36,1) .05s forwards}
.pc-intro-mark .p{color:var(--sky);margin:0 .07em;animation:pcPop .6s cubic-bezier(.34,1.12,.4,1) .18s forwards}
/* name: mask reveal — text rises up from behind a clipping line */
.pc-intro-name{
  overflow:hidden;display:inline-block;margin-top:22px;line-height:1.3;
  font-family:"Space Grotesk",sans-serif;font-weight:500;
  color:#9FB0BD;font-size:clamp(12px,2vw,15px);letter-spacing:.28em;text-transform:uppercase;
}
.pc-intro-name span{display:inline-block;transform:translateY(120%);
  animation:pcReveal .62s cubic-bezier(.22,1,.36,1) .34s forwards}
/* thin sky underline drawing out */
.pc-intro-line{
  width:52px;height:2px;border-radius:2px;background:var(--sky);margin-top:20px;
  transform:scaleX(0);opacity:0;animation:pcLine .55s cubic-bezier(.22,1,.36,1) .54s forwards;
}
@keyframes pcBrL{from{opacity:0;transform:translateX(-22px) scale(.96)}to{opacity:1;transform:none}}
@keyframes pcBrR{from{opacity:0;transform:translateX(22px) scale(.96)}to{opacity:1;transform:none}}
@keyframes pcPop{from{opacity:0;transform:scale(.72)}to{opacity:1;transform:none}}
@keyframes pcReveal{to{transform:none}}
@keyframes pcLine{to{transform:scaleX(1);opacity:1}}
/* exit: a smooth zoom-through dissolve — the mark scales up + soft-blurs while the whole
   panel fades, as if the camera pushes through it to reveal the site (no hard slide). */
.pc-intro.pc-leaving .pc-intro-inner{animation:pcInnerThrough .78s cubic-bezier(.4,0,.2,1) forwards}
.pc-intro.pc-leaving{animation:pcDissolve .78s cubic-bezier(.4,0,.2,1) forwards}
@keyframes pcInnerThrough{40%{opacity:1}to{opacity:0;transform:scale(1.14);filter:blur(7px)}}
@keyframes pcDissolve{from{opacity:1;transform:scale(1)}to{opacity:0;transform:scale(1.025)}}
@media (prefers-reduced-motion:reduce){.pc-intro{display:none}}
.hero-title{
  font-weight:600;letter-spacing:-.035em;line-height:1.04;
  font-size:clamp(38px,5vw,62px);color:var(--graphite);
}
.hero-lead{max-width:540px;margin-top:24px;color:var(--muted);font-size:18px}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:28px;margin-top:36px}
.clock{font-size:13px;letter-spacing:.08em;color:var(--faint);
  font-variant-numeric:tabular-nums}

/* ---------- sections ---------- */
.section{padding:74px 0}
.section.tint{background:var(--mist-2);border-block:1px solid var(--line)}
.section-kicker{margin-bottom:26px}

.statement{
  font-family:"Space Grotesk",sans-serif;font-weight:500;
  font-size:clamp(24px,3.4vw,38px);line-height:1.32;letter-spacing:-.02em;
  max-width:920px;color:var(--graphite);
}
.statement em{color:var(--sky-dark);font-style:normal}

/* numbered pillars */
.pillars{list-style:none}
.pillars li{
  display:grid;grid-template-columns:64px 1fr;gap:24px;
  padding:30px 0;border-top:1px solid var(--line);
}
.pillars li:last-child{border-bottom:1px solid var(--line)}
.pillars .num{font-family:"Space Grotesk",sans-serif;font-weight:600;
  color:var(--sky);font-size:18px;padding-top:3px}
.pillars h3{font-size:22px;font-weight:600;letter-spacing:-.01em;margin-bottom:7px}
.pillars p{color:var(--muted);max-width:640px;font-size:16.5px}

/* who list */
.who{display:grid;grid-template-columns:1.1fr 1fr;gap:54px;align-items:start}
.who h2{font-size:clamp(26px,3.4vw,40px);font-weight:600;letter-spacing:-.02em;line-height:1.15}
.checks{list-style:none;display:flex;flex-direction:column;gap:16px}
.checks li{display:grid;grid-template-columns:24px 1fr;gap:12px;color:var(--graphite)}
.checks li::before{content:"→";color:var(--sky);font-weight:700}

/* research tracks (2-col list) */
.tracks-head{font-family:"Space Grotesk","Inter",sans-serif;font-weight:600;letter-spacing:-.02em;
  font-size:clamp(26px,3.4vw,38px);line-height:1.15;max-width:760px}
.tracks-lead{max-width:680px;margin-top:14px}
.tracks{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:0 52px;margin-top:10px}
.tracks li{display:grid;grid-template-columns:38px 1fr;gap:12px;
  padding:20px 0;border-top:1px solid var(--line)}
.tracks .tnum{font-family:"Space Grotesk","Inter",sans-serif;font-weight:600;
  color:var(--sky);font-size:15px;font-variant-numeric:tabular-nums;padding-top:2px}
.tracks h3{font-size:17px;font-weight:600;letter-spacing:-.01em;margin-bottom:3px}
.tracks p{color:var(--muted);font-size:14.5px;line-height:1.5}
@media (max-width:760px){.tracks{grid-template-columns:1fr;gap:0}}

/* document / deck link */
.doc-link{display:inline-flex;align-items:center;gap:10px;margin-bottom:10px;
  font-family:"Space Grotesk","Inter",sans-serif;font-weight:600;font-size:15.5px;color:var(--graphite);
  border:1px solid var(--line);border-radius:11px;padding:12px 18px;transition:.15s}
.doc-link:hover{border-color:var(--sky);color:var(--sky-dark)}
.doc-link .tag{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--faint);font-weight:500}

/* cta band */
.cta-band{background:var(--graphite);color:#fff;padding:78px 0}
.cta-band h2{font-family:"Space Grotesk",sans-serif;font-weight:600;
  font-size:clamp(28px,4vw,46px);letter-spacing:-.02em;line-height:1.1;max-width:760px}
.cta-band p{color:#A9B7C2;margin-top:16px;max-width:560px}
.cta-band .actions{margin-top:34px}
.cta-band .mark span{color:var(--sky)}

/* ---------- form ---------- */
.form-wrap{max-width:660px}
.form-intro{color:var(--muted);margin-bottom:40px}
.field{margin-bottom:22px}
.field label{display:block;font-size:14.5px;font-weight:600;
  margin-bottom:8px;color:var(--graphite)}
.field .req{color:var(--sky)}
.field .hint{font-weight:400;color:var(--faint);font-size:13px;margin-left:6px}
.input,select,textarea{
  width:100%;font-family:"Inter",sans-serif;font-size:16px;color:var(--graphite);
  background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:13px 15px;transition:border-color .15s,box-shadow .15s;
}
textarea{min-height:130px;resize:vertical;line-height:1.6}
.input:focus,select:focus,textarea:focus{
  outline:none;border-color:var(--sky);box-shadow:0 0 0 3px rgba(92,156,224,.18);
}
.input::placeholder,textarea::placeholder{color:#A9B4BF}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
input[type=file]{font-size:14px;color:var(--muted)}
.form-submit{margin-top:14px}
.form-fine{color:var(--faint);font-size:13px;margin-top:18px}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);padding:54px 0;margin-top:10px}
.footer-inner{display:flex;flex-direction:column;gap:20px}
.footer-brand{display:flex;align-items:center;gap:11px;font-family:"Space Grotesk",sans-serif;
  font-weight:600;color:var(--graphite)}
.footer-note{color:var(--muted);font-size:14.5px;max-width:560px}
.footer-meta{display:flex;flex-wrap:wrap;align-items:center;gap:22px;
  padding-top:18px;border-top:1px solid var(--line);
  color:var(--faint);font-size:13px}
.footer-nav{display:flex;gap:20px;margin-right:auto}
.footer-nav a{color:var(--muted);transition:color .15s}
.footer-nav a:hover{color:var(--graphite)}

/* ---------- responsive ---------- */
@media (max-width:760px){
  body{font-size:16px}
  .brand-name{display:none}
  .nav{gap:18px}
  .hero{padding:56px 0 50px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-foot{margin-top:54px}
  .section{padding:54px 0}
  .who{grid-template-columns:1fr;gap:30px}
  .form-row{grid-template-columns:1fr}
  .pillars li{grid-template-columns:44px 1fr;gap:14px}
}