@import url('https://fonts.googleapis.com/css2?family=Bodoni+Moda:ital,opsz,wght@0,6..96,400;0,6..96,500;0,6..96,600;1,6..96,400&family=Inter:wght@400;500;600&display=swap');

/* ============================================================
   Temp°IQ Library — Design system
   Cool architectural (Dezeen / AD): crisp white, near-black,
   single sharp accent, grotesque sans display, tight grid.
   ============================================================ */

/* ---------- Participate: form, pop-up, footer CTA ---------- */
.eform{max-width:640px;}
.eform label{display:block;font-family:var(--ui);font-size:.68rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint);margin:0 0 8px;}
.eform input,.eform select,.eform textarea{width:100%;font-family:var(--ui);font-size:.95rem;color:var(--ink);background:var(--white);border:1px solid var(--hair-strong);border-radius:9px;padding:.78em .9em;margin-bottom:20px;transition:border-color .15s,box-shadow .15s;}
.eform input::placeholder,.eform textarea::placeholder{color:var(--ink-faint);}
.eform input:focus,.eform select:focus,.eform textarea:focus{outline:none;border-color:var(--clay);box-shadow:0 0 0 3px rgba(22,49,79,.08);}
.eform textarea{min-height:112px;resize:vertical;line-height:1.55;}
.eform .two{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.eform .check{display:flex;gap:11px;align-items:flex-start;font-family:var(--ui);font-size:.83rem;color:var(--ink-soft);line-height:1.55;margin:.4rem 0 1.5rem;}
.eform .check input{width:auto;margin:3px 0 0;}
.eform-done{border:1px solid var(--hair-strong);border-radius:14px;padding:32px;font-family:var(--ui);box-shadow:0 1px 2px rgba(21,23,26,.03),0 22px 46px -32px rgba(21,23,26,.2);}
.eform-done h3{font-family:var(--display);}
@media(max-width:620px){ .eform .two{grid-template-columns:1fr;} }

/* nav CTA (Participate) */
.nav-links a.nav-cta{color:var(--clay);font-weight:600;}
.nav-links a.nav-cta:hover{color:var(--clay-deep);}

/* floating Participate shortcut — pill with icon + attention pulse */
.engage-fab{position:fixed;right:22px;top:calc(var(--navh) + 130px);z-index:65;display:inline-flex;align-items:center;gap:9px;
  background:var(--pop);color:#fff;font-family:var(--ui);font-size:.7rem;font-weight:600;letter-spacing:.13em;
  text-transform:uppercase;border:none;border-radius:999px;padding:.92em 1.3em;cursor:pointer;
  box-shadow:0 8px 26px -8px rgba(14,34,64,.55);transition:transform .2s,background .2s,box-shadow .2s;}
.engage-fab svg{display:block;}
.engage-fab:hover{background:var(--pop-deep);transform:translateY(-2px);box-shadow:0 12px 32px -8px rgba(14,34,64,.65);}
.engage-fab::after{content:"";position:absolute;inset:-2px;border-radius:999px;border:2px solid var(--pop);
  opacity:0;animation:fabPulse 2.8s ease-out infinite;pointer-events:none;}
@keyframes fabPulse{0%{transform:scale(1);opacity:.55}70%{transform:scale(1.35);opacity:0}100%{opacity:0}}
@media(prefers-reduced-motion:reduce){.engage-fab::after{animation:none;}}
@media(max-width:620px){ .engage-fab span{display:none;} .engage-fab{padding:1em;border-radius:50%;} }
.engage-scrim{display:none;position:fixed;inset:0;background:rgba(18,20,23,.45);z-index:95;}
.engage-scrim.open{display:flex;align-items:center;justify-content:center;padding:24px;}
.engage-card{background:var(--paper);max-width:430px;width:100%;border-radius:3px;padding:32px 30px;box-shadow:var(--shadow);}
.engage-card .x{float:right;background:none;border:none;font-size:1.3rem;line-height:1;color:var(--ink-faint);cursor:pointer;}
.engage-card h3{margin:.2rem 0 .5rem;}
.engage-card p{color:var(--ink-soft);font-size:.95rem;margin:0 0 2px;}
.engage-card select{width:100%;font-family:var(--ui);font-size:1rem;color:var(--ink);background:var(--white);
  border:1px solid var(--hair-strong);border-radius:2px;padding:.74em .85em;margin:16px 0 18px;}
.engage-card .btn{width:100%;justify-content:center;}

/* footer engage band */
.foot-cta{background:var(--clay-deep);}
.foot-cta-inner{max-width:var(--maxw);margin:0 auto;padding:46px 32px;display:flex;justify-content:space-between;align-items:flex-end;gap:30px;flex-wrap:wrap;}
.foot-cta h3{font-family:var(--display);font-weight:400;font-size:clamp(1.6rem,2.4vw,2.2rem);max-width:18ch;margin:0;color:#fff;}
.foot-cta p{font-family:var(--ui);font-size:.95rem;color:rgba(255,255,255,.72);margin:.6rem 0 0;max-width:46ch;}
.foot-cta .acts{display:flex;gap:12px;flex-wrap:wrap;}
.foot-cta .btn.clay{background:#fff;border-color:#fff;color:var(--clay-deep);}
.foot-cta .btn.clay:hover{background:rgba(255,255,255,.86);border-color:rgba(255,255,255,.86);color:var(--clay-deep);}
.foot-cta .btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.foot-cta .btn.ghost:hover{background:#fff;color:var(--clay-deep);border-color:#fff;}
/* continue-exploring link columns */
.xcol h4{margin:0 0 .4rem;}
.xlink{display:block;font-family:var(--ui);font-size:.95rem;color:var(--ink);padding:.55rem 0;border-bottom:1px solid var(--hair);}
.xlink:hover{color:var(--clay);}
.xlink .n{color:var(--clay);font-variant-numeric:tabular-nums;font-size:.85em;margin-right:.5em;}

:root{
  --paper:#FFFFFF;          /* crisp white */
  --paper-2:#F5F6F8;        /* cool light grey panel */
  --paper-3:#EBEDF1;        /* card / inset */
  --band:#EBEFF4;           /* cool-grey tonal band — visible but elegant (no cream) */
  --ink:#121418;            /* near-black */
  --ink-soft:#1E252D;       /* secondary text — deep charcoal */
  --ink-faint:#434952;      /* captions / meta — charcoal */
  --clay:#384C61;           /* Clydesdale slate-navy — matched to the device body */
  --clay-deep:#283747;      /* hover — the device's deeper shadow navy */
  --pop:#384C61;            /* pop = the device navy + imagery */
  --pop-deep:#283747;
  --gold:#9A7B4F;           /* RL antique-gold whisper (sparingly) */
  --bronze:#9A7B4F;         /* (retired warm accent) */
  --bronze-deep:#6E5430;
  --bronze-wash:#F5F6F8;    /* cool light grey (no cream) */
  --brass:#3A506A;          /* (retired) */
  --sage:#3A506A;           /* status: complete/live */
  --hair:#E6E8EC;           /* cool whisper-thin hairlines */
  --hair-strong:#CFD3D9;
  --white:#FFFFFF;
  --shadow:0 1px 2px rgba(21,23,26,.04), 0 24px 50px -34px rgba(21,23,26,.22);
  --serif:'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --display:'Bodoni Moda', Georgia, serif;
  --display-alt:'Bodoni Moda', Georgia, serif;
  --ui:'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --read-serif:'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --maxw:1200px;
  --readw:720px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
/* calm, composed page entrance (luxury feel; motion-safe) */
/* opacity-only: a transform on <body> becomes the containing block for the
   position:fixed Participate FAB, making it scroll away — so keep body flat. */
@keyframes pageIn{from{opacity:0}to{opacity:1}}
body{animation:pageIn .6s ease both;}
/* signature hero imagery: one slow, composed scale-in */
@keyframes heroImgIn{from{opacity:0;transform:scale(1.05)}to{opacity:1;transform:none}}
.hero .hero-img,.thero-device{animation:heroImgIn 1.2s cubic-bezier(.16,1,.3,1) both;}
@media(prefers-reduced-motion:reduce){body,.hero .hero-img,.thero-device{animation:none;}}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--serif);
  font-size:18px;
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
  font-feature-settings:"kern" 1, "liga" 1, "calt" 1;
  font-kerning:normal;
}
img{max-width:100%;display:block;}
/* reading refinements — fewer orphans/rivers, kinder line breaks */
p,li{text-wrap:pretty;}
p{hyphens:none;}
a{color:var(--clay);text-decoration:none;}
a:hover{color:var(--clay-deep);}
hr{border:none;border-top:1px solid var(--hair);margin:3rem 0;}
::selection{background:rgba(58,80,106,.16);}

/* ---------- Typographic scale ---------- */
/* Modular type scale — ratio ~1.25 on an 18px (1.125rem) body.
   body 1.125 · lede/h3 1.4 · h2 2.55 · h1 3.8 (fluid, controlled) */
h1,h2,h3,h4{font-family:var(--display);font-weight:400;letter-spacing:0;color:var(--ink);margin:0 0 .5em;line-height:1.12;text-wrap:balance;font-optical-sizing:auto;}
h1{font-size:clamp(2.4rem, 1.55rem + 3.6vw, 3.8rem);letter-spacing:-.01em;line-height:1.06;}
h2{font-size:clamp(1.95rem, 1.45rem + 2.1vw, 2.55rem);line-height:1.12;}
h3{font-size:1.4rem;font-weight:500;line-height:1.2;}
/* sans label-headers (card titles, role labels) — never smaller than body */
h4{font-size:1rem;font-family:var(--ui);font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--ink);line-height:1.3;}
.sans{font-family:var(--ui)!important;font-weight:500;letter-spacing:-.01em;text-transform:none;}
p{margin:0 0 1.15em;}

.eyebrow{
  font-family:var(--ui);font-size:.66rem;font-weight:600;
  letter-spacing:.24em;text-transform:uppercase;color:var(--clay);
  margin:0 0 1.4rem;
}
.eyebrow.muted{color:var(--ink-faint);}
.lede{font-family:var(--read-serif);font-size:clamp(1.08rem,1rem + .35vw,1.22rem);line-height:1.55;color:var(--ink-soft);font-weight:400;max-width:56ch;}
/* hero subtitle (the descriptor under the display headline) — released from the
   headline's tight leading so it shares the same calm rhythm as the lede/body */
.hero h1 .sans,.hero-sub{
  display:block;font-family:var(--ui);font-weight:400;
  font-size:clamp(1.08rem,1rem + .4vw,1.2rem);line-height:1.55;
  letter-spacing:0;color:var(--ink-soft);margin-top:1.2rem;max-width:50ch;text-wrap:pretty;
}
/* on the gated entry, the descriptor sits with the gate's own (smaller) lede */
.gate-art h1 .sans{
  display:block;font-family:var(--ui);font-weight:400;
  font-size:.92rem;line-height:1.55;
  letter-spacing:.01em;color:var(--ink-faint);margin-top:1.1rem;max-width:56ch;text-wrap:balance;
}
.meta{font-family:var(--ui);font-size:.8rem;color:var(--ink-faint);letter-spacing:.02em;}
.drop::first-letter{
  font-family:var(--display);font-weight:400;float:left;font-size:3.3rem;
  line-height:.82;padding:.02em .1em 0 0;color:var(--pop);
}

/* ---------- Layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px;}
.read{max-width:var(--readw);margin:0 auto;padding:0 32px;font-family:var(--read-serif);font-size:1.12rem;line-height:1.75;color:var(--ink-soft);hanging-punctuation:first last;}
.read a:not(.cite){color:var(--clay);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;text-decoration-color:var(--hair-strong);}
.read a:not(.cite):hover{text-decoration-color:var(--clay);}
.read p{margin:0 0 1.32em;}
.read .eyebrow,.read .meta,.read .chip,.read .btn,.read .link-arrow{font-family:var(--ui);}

/* ---------- Editorial touches (white-paper readers) ---------- */
/* lead-in: the opening paragraph reads a step larger */
.article .read > p:first-of-type{font-size:1.24rem;line-height:1.6;color:var(--ink);}
/* drop cap on the opening paragraph */
.article .read > p:first-of-type::first-letter{
  font-family:var(--display);font-weight:500;float:left;font-size:3.6rem;line-height:.78;
  padding:.04em .14em 0 0;color:var(--clay);
}
/* auto-numbered section headings — 01 / 02 / 03 editorial cadence */
.article .read{counter-reset:sec;}
.article .read h2{position:relative;padding-top:1.4rem;border-top:1px solid var(--hair);}
.article .read h2::before{
  counter-increment:sec;content:counter(sec,decimal-leading-zero);
  display:block;font-family:var(--ui);font-size:.7rem;font-weight:600;letter-spacing:.18em;
  color:var(--clay);margin-bottom:.5rem;
}
/* pull-quote — the strongest line, set large and quiet */
.pull{font-family:var(--display);font-weight:400;font-size:clamp(1.5rem,1.1rem + 1.6vw,2rem);
  line-height:1.25;color:var(--ink);max-width:var(--readw);margin:2.4rem auto;padding:0 32px;
  border-left:2px solid var(--clay);padding-left:1.1rem;}
section{padding:clamp(2.75rem,5vw,5rem) 0;}
.rule-top{border-top:1px solid var(--hair);}
/* let the hero flow into the first section without a hard divider */
header.hero + .rule-top{border-top:none;}
/* ── Tonal rhythm: whisper cool-grey bands break up the white, framed by hairline
   keylines top & bottom (the deck's combo: grey trays + keyline). No cream. ── */
main > section:nth-of-type(even),
body > section:nth-of-type(even){
  background:var(--band);
  border-top:1px solid var(--hair-strong);
  border-bottom:1px solid var(--hair-strong);
}
/* white panels/cards lift off the grey as clean trays */
section:nth-of-type(even) .panel,
section:nth-of-type(even) .io-card,
section:nth-of-type(even) .engage-card,
section:nth-of-type(even) .thread{background:var(--white);}

/* ---------- Top navigation (SITE navigation) ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:70;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--hair);
}
.nav-inner{max-width:1320px;margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:26px;height:var(--navh);}
.brand{font-family:var(--display);font-weight:500;font-size:1.42rem;letter-spacing:0;color:var(--ink);white-space:nowrap;display:inline-flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:4px;line-height:1;}
.brand-cap{font-family:var(--ui);font-weight:600;font-size:.6rem;letter-spacing:.17em;text-transform:uppercase;color:var(--ink-faint);}
.brand-row{display:inline-flex;align-items:center;gap:.62rem;flex-wrap:nowrap;}
.brand-lab{font-family:var(--display);font-weight:400;font-size:1.5rem;line-height:1;letter-spacing:-.005em;color:var(--ink-soft);white-space:nowrap;display:inline-flex;align-items:center;}
.brand-lab .pipe{color:var(--ink-faint);font-weight:400;font-size:1.55em;line-height:1;margin-right:.32em;transform:translateY(-.03em);}
.brand b{font-weight:600;}
.brand .lib{font-family:var(--ui);font-weight:500;font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-faint);border-left:1px solid var(--hair-strong);margin-left:.8em;padding-left:.8em;}
.brand-logo{height:34px;width:auto;display:block;}
/* nudge the serif "| LAB" down a touch to sit on the wordmark's baseline (nav only) */
.nav .brand-lab{transform:translateY(3px);}
.gate-art .brand{margin-bottom:0;flex-direction:row;align-items:center;gap:clamp(.5rem,1.4vw,1rem);}
.gate-art .brand .brand-logo{height:clamp(66px,7.5vw,108px);}
.gate-art .brand-lab{font-family:var(--display);font-weight:400;font-size:clamp(2.2rem,4.6vw,3.5rem);line-height:1;letter-spacing:-.01em;color:var(--ink-soft);white-space:nowrap;display:inline-flex;align-items:center;}
.gate-art .brand-lab .pipe{color:var(--ink-faint);font-weight:400;font-size:1.45em;line-height:1;margin-right:.26em;transform:translateY(-.03em);}
.foot-brand{display:inline-block;margin-bottom:1.1rem;}
.foot .brand-logo{height:30px;}
.foot-brand .brand-lab{transform:translateY(4px);}
.foot-platform{display:block;margin-top:1.5rem;border:1px solid var(--hair-strong);border-radius:12px;padding:14px 16px;text-decoration:none;transition:.2s;}
.foot-platform:hover{background:var(--paper-2);border-color:var(--ink-faint);}
.foot-platform .k{display:block;font-family:var(--ui);font-size:.62rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:5px;}
.foot-platform .t{font-family:var(--display);font-size:1.05rem;color:var(--ink);}
.foot-platform .ar{margin-left:.25em;}
@media(max-width:620px){.brand-logo{height:24px;} .brand-cap{font-size:.5rem;letter-spacing:.12em;}}
.nav-links{display:flex;gap:22px;margin-left:auto;align-items:center;}
.nav-links a{
  font-family:var(--ui);font-size:.96rem;font-weight:500;letter-spacing:.01em;
  color:var(--ink-soft);text-transform:none;
}
.nav-links a .nn{color:var(--clay);font-variant-numeric:tabular-nums;font-size:.82em;}
.nav-links a:hover,.nav-links a.active{color:var(--ink);}
.acc-link .nn{color:var(--clay);font-variant-numeric:tabular-nums;font-size:.84em;margin-right:5px;}
.acc-link.active .nn{color:var(--clay);}

/* ---------- Numbered index / catalogue (Uriu-style) ---------- */
.index-group{margin-top:3.2rem;}
.index-group:first-of-type{margin-top:1rem;}
.index-label{font-family:var(--ui);font-size:.66rem;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-faint);padding-bottom:.9rem;border-bottom:1px solid var(--ink);}
.index-row{display:grid;grid-template-columns:78px 1fr 132px;gap:24px;padding:18px 4px;border-bottom:1px solid var(--hair);align-items:baseline;text-decoration:none;}
a.index-row:hover{background:var(--paper-2);}
.index-row .no{font-family:var(--ui);font-size:.8rem;color:var(--clay);font-variant-numeric:tabular-nums;letter-spacing:.06em;line-height:1.6;}
.index-row .ti{display:block;font-family:var(--ui);font-size:1.05rem;font-weight:600;letter-spacing:-.005em;color:var(--ink);line-height:1.35;}
a.index-row:hover .ti{color:var(--clay);}
.index-row .de{display:block;font-family:var(--ui);font-size:.86rem;color:var(--ink-soft);margin-top:5px;max-width:58ch;line-height:1.5;}
.index-row .tag{justify-self:end;align-self:baseline;font-family:var(--ui);font-size:.6rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);white-space:nowrap;}
.index-row.muted .ti{color:var(--ink-faint);}
.index-row.sub .ti{font-weight:500;color:var(--ink-soft);}
.index-row.sub .no{color:var(--ink-faint);}
@media(max-width:620px){
  .index-row{grid-template-columns:52px 1fr;gap:14px;}
  .index-row .tag{display:none;}
}
/* luxury: underline that draws in on hover / active (desktop) */
@media(min-width:981px){
  .nav-item > a{background-image:linear-gradient(currentColor,currentColor);background-repeat:no-repeat;
    background-position:0 100%;background-size:0% 1.5px;transition:background-size .32s cubic-bezier(.16,1,.3,1),color .2s;padding-bottom:3px;}
  .nav-item:hover > a,.nav-item:focus-within > a,.nav-item > a.active{background-size:100% 1.5px;}
}
.nav-signout{font-family:var(--ui);font-size:.88rem;color:var(--ink-faint);border:1px solid var(--hair-strong);padding:7px 15px;border-radius:999px;}
.nav-signout:hover{color:var(--ink);border-color:var(--ink-faint);}
.nav-toggle{display:none;}

/* ---------- Top-nav dropdowns ---------- */
.nav-item{position:relative;display:inline-flex;align-items:center;}
.nav-car{font-size:.58em;margin-left:.4em;color:var(--ink-faint);transition:transform .2s,color .2s;}
.nav-item.has-drop:hover .nav-car,.nav-item.has-drop:focus-within .nav-car{transform:translateY(1px);color:var(--clay);}
.nav-drop{position:absolute;top:100%;left:50%;transform:translateX(-50%);min-width:236px;
  background:var(--white);border:1px solid var(--hair-strong);border-radius:14px;
  box-shadow:0 1px 2px rgba(21,23,26,.05),0 22px 50px -20px rgba(21,23,26,.32);
  padding:18px 8px 8px;display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateX(-50%) translateY(4px);transition:opacity .18s ease,transform .18s ease;z-index:80;}
.nav-item.has-drop:hover .nav-drop,.nav-item.has-drop:focus-within .nav-drop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);}
.nav-drop a{font-family:var(--ui);font-size:.9rem;font-weight:500;color:var(--ink-soft);padding:10px 14px;border-radius:9px;white-space:nowrap;text-transform:none;letter-spacing:0;}
.nav-drop a:hover{background:var(--paper-2);color:var(--ink);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5em;
  font-family:var(--ui);font-size:.92rem;font-weight:600;letter-spacing:0;text-transform:none;
  padding:.82em 1.5em;border-radius:999px;border:1px solid var(--clay);
  background:var(--clay);color:var(--white);cursor:pointer;transition:.2s ease;
}
.btn:hover{background:var(--clay-deep);border-color:var(--clay-deep);color:var(--white);}
.btn.ghost{background:var(--white);color:var(--ink);border-color:var(--hair-strong);}
.btn.ghost:hover{background:var(--clay);border-color:var(--clay);color:var(--white);}
.btn.clay{background:var(--clay);border-color:var(--clay);color:var(--white);}
.btn.clay:hover{background:var(--clay-deep);border-color:var(--clay-deep);}
.link-arrow{font-family:var(--ui);font-size:.86rem;font-weight:500;display:inline-flex;align-items:center;gap:.45em;}
.link-arrow .ar{transition:transform .18s;}
.link-arrow:hover .ar{transform:translateX(4px);}

/* ---------- Tags / chips ---------- */
.chip{
  display:inline-block;font-family:var(--ui);font-size:.68rem;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;padding:.34em .85em;border-radius:999px;
  background:transparent;color:var(--ink-soft);border:1px solid var(--hair-strong);
}
.chip.featured{background:transparent;color:var(--clay);border-color:var(--clay);}
.chip.draft{background:transparent;border:1px dashed var(--hair-strong);color:var(--ink-faint);}
.chip.live{background:transparent;color:var(--clay);border-color:var(--clay);}
.chip.soon{background:transparent;color:var(--ink-faint);border:1px solid var(--hair-strong);}

/* ---------- Hero ---------- */
.hero{padding-top:clamp(3rem,6vw,5rem);}
.hero h1{max-width:14ch;}
.hero .lede{max-width:46ch;margin-top:1.4rem;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:2.2rem;}

/* ---------- Grids / cards ---------- */
.grid{display:grid;gap:34px;}
.grid.cols-3{grid-template-columns:repeat(3,1fr);}
.grid.cols-2{grid-template-columns:repeat(2,1fr);}
.card{
  background:var(--white);border:1px solid var(--hair);border-radius:14px;
  padding:30px;display:flex;flex-direction:column;gap:14px;transition:.2s;
}
a.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--hair-strong);}
.card .num{font-family:var(--display);font-size:.95rem;color:var(--clay);font-weight:500;}
.card h3{margin:0;}
.card p{margin:0;color:var(--ink-soft);font-size:1rem;line-height:1.5;}
.card .spine{font-family:var(--ui);font-size:.74rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint);margin-top:auto;}

/* elevated research-program feature cards */
.prog-grid{gap:24px;}
.prog{position:relative;overflow:hidden;padding:34px 30px 24px;
  box-shadow:0 1px 2px rgba(21,23,26,.03), 0 18px 40px -30px rgba(21,23,26,.24);}
.prog::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--clay);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;}
.prog:hover::before{transform:scaleX(1);}
a.prog:hover{transform:translateY(-4px);border-color:var(--hair-strong);box-shadow:0 1px 2px rgba(21,23,26,.04), 0 28px 55px -28px rgba(21,23,26,.32);}
.prog .num{font-family:var(--display);font-size:1.2rem;color:var(--clay);display:flex;align-items:center;}
.prog h3{font-size:1.5rem;margin:.1rem 0 0;}
.prog-foot{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:16px;border-top:1px solid var(--hair);}
.prog-foot .spine{font-family:var(--ui);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint);}
.prog-foot .link-arrow .ar{color:var(--clay);font-size:1.1rem;}
a.prog:hover .prog-foot .ar{transform:translateX(4px);}
.prog.feat{background:var(--clay-deep);border-color:var(--clay-deep);
  box-shadow:0 1px 2px rgba(21,23,26,.05), 0 26px 54px -24px rgba(22,49,79,.55);}
.prog.feat h3,.prog.feat .num{color:#fff;}
.prog.feat p{color:rgba(255,255,255,.82);}
.prog.feat .prog-foot{border-top-color:rgba(255,255,255,.18);}
.prog.feat .prog-foot .spine{color:rgba(255,255,255,.6);}
.prog.feat .prog-foot .ar{color:#fff;}
.prog.feat .chip.featured{color:#fff;border-color:rgba(255,255,255,.5);}
.prog.feat::before{background:rgba(255,255,255,.45);transform:scaleX(1);}

/* feature / editorial split */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center;}
.panel{background:var(--white);border:1px solid var(--hair-strong);border-radius:14px;padding:clamp(28px,4vw,52px);
  box-shadow:0 1px 2px rgba(21,23,26,.03), 0 22px 46px -32px rgba(21,23,26,.20);}
.panel .eyebrow{color:var(--pop);}
.panel.wash{background:var(--paper-2);border-color:var(--hair-strong);}
.figure{background:var(--paper-2);border:1px solid var(--hair-strong);border-radius:14px;min-height:340px;display:flex;align-items:center;justify-content:center;padding:40px;}

/* ---------- Section header block ---------- */
.section-head{max-width:var(--readw);}
.section-head .lede{margin-top:1rem;}
.spine-row{display:flex;gap:28px;flex-wrap:wrap;margin-top:1.6rem;}
.spine-row .s{font-family:var(--ui);font-size:.8rem;color:var(--ink-soft);}
.spine-row .s b{display:block;font-family:var(--display);font-size:1.05rem;color:var(--ink);font-weight:500;}

/* audience / job callout */
.callout{
  border-left:3px solid var(--pop);padding:6px 0 6px 22px;margin:0 0 2rem;
  font-family:var(--ui);font-size:.86rem;color:var(--ink-soft);line-height:1.7;
}
.callout b{color:var(--ink);font-weight:600;}
.callout.feature{border-left:none;background:var(--clay-deep);color:rgba(255,255,255,.82);
  border-radius:14px;padding:26px 30px;margin:0 0 2.4rem;
  box-shadow:0 1px 2px rgba(21,23,26,.05), 0 22px 46px -28px rgba(22,49,79,.5);}
.callout.feature b{color:#fff;}

/* sticky flips to a light pill over dark bands */
.engage-fab.on-dark{background:var(--white);color:var(--clay-deep);box-shadow:0 8px 26px -8px rgba(0,0,0,.4);}
.engage-fab.on-dark::after{border-color:var(--white);}
.engage-fab.on-dark:hover{background:var(--paper-2);color:var(--clay-deep);}

/* imagery */
.hero-img{display:block;width:100%;height:auto;border-radius:14px;border:1px solid var(--hair);margin-top:.5rem;}
.hero-split{display:grid;grid-template-columns:1fr 1.08fr;gap:clamp(32px,4vw,56px);align-items:stretch;}
.hero-split.media-first{grid-template-columns:1.08fr 1fr;}
.hero-split.media-first .hero-media{overflow:hidden;background:#fff;}
.hero-split.media-first .hero-img{object-fit:cover;object-position:center;transform:none;padding:0;}
@media(max-width:860px){ .hero-split.media-first{grid-template-columns:1fr;} .hero-split.media-first .hero-media{order:2;} }
/* elegant hero CTAs — outline primary that fills on hover, like the gate */
.hero-actions .btn.clay{background:var(--white);color:var(--clay-deep);border-color:var(--clay-deep);}
.hero-actions .btn.clay:hover{background:var(--clay-deep);color:var(--white);border-color:var(--clay-deep);}
.hero-split .hero-media{display:flex;border:1px solid var(--hair);border-radius:14px;overflow:hidden;}
.hero-split .hero-img{margin-top:0;width:100%;height:100%;min-height:360px;object-fit:cover;object-position:center;border:none;border-radius:0;}
.hero-split .hero-media.device{background:linear-gradient(160deg,var(--paper-2),var(--paper-3));align-items:center;justify-content:center;}
.hero-split .hero-media.device .hero-img{object-fit:contain;padding:clamp(26px,4vw,52px);}
.hero-split h1{max-width:none;}
@media(max-width:860px){ .hero-split{grid-template-columns:1fr;gap:26px;} .hero-split .hero-img{min-height:240px;} }
.hero-duo{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.hero-duo .hero-img{margin-top:0;}
@media(max-width:620px){ .hero-duo{grid-template-columns:1fr;} }
/* device + app stacked panels */
.device-stack{display:flex;flex-direction:column;gap:18px;margin-top:.5rem;}
.device-panel{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center;justify-items:center;border:1px solid var(--hair);border-radius:14px;padding:28px;background:var(--white);box-shadow:0 1px 2px rgba(21,23,26,.03),0 18px 40px -32px rgba(21,23,26,.2);}
.device-panel img,.device-panel video{display:block;max-height:320px;width:auto;max-width:100%;border-radius:10px;}
.device-panel .dp-app{max-height:340px;}
@media(max-width:620px){ .device-panel{grid-template-columns:1fr;} }
/* thermotherapy hero: device between header & copy, app phone on the right */
.thero{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(18px,2.4vw,38px);align-items:center;}
.thero-text{max-width:46ch;}
.thero-text .eyebrow{margin-bottom:1.1rem;}
.thero-text h1{max-width:24ch;text-wrap:balance;font-size:clamp(2.2rem,1.5rem+2.6vw,3.2rem);margin-bottom:0;}
.thero-device{display:block;width:100%;max-width:320px;height:auto;border-radius:14px;margin:1.5rem 0 1.6rem;}
.thero-text .lede{margin-top:0;}
.thero-app{display:flex;align-items:center;justify-content:flex-start;padding-right:clamp(40px,8vw,140px);}
.thero-app .app-link{display:flex;flex-direction:column;align-items:center;gap:18px;text-decoration:none;}
.thero-app video{display:block;width:100%;max-width:252px;height:auto;border-radius:22px;box-shadow:0 1px 2px rgba(21,23,26,.05),0 30px 60px -24px rgba(22,49,79,.5);transition:transform .35s cubic-bezier(.2,.7,.2,1),box-shadow .35s;}
.thero-app .app-link:hover video{transform:translateY(-6px) scale(1.012);box-shadow:0 1px 2px rgba(21,23,26,.05),0 44px 80px -26px rgba(22,49,79,.55);}
.thero-app .app-cap{font-family:var(--ui);font-size:.64rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-faint);display:inline-flex;align-items:center;gap:.7em;transition:color .25s;}
.thero-app .app-cap .ar{color:var(--clay);transition:transform .25s;display:inline-block;}
.thero-app .app-link:hover .app-cap{color:var(--ink-soft);}
.thero-app .app-link:hover .app-cap .ar{transform:translate(2px,-2px);}
/* embedded interactive app prototype (Figma) — sits in the phone slot */
.thero-app .app-embed{display:flex;flex-direction:column;align-items:center;gap:18px;width:100%;}
.thero-app .app-frame{display:block;width:100%;max-width:340px;height:min(76vh,680px);border:1px solid var(--hair-strong);border-radius:22px;background:var(--ink);box-shadow:0 1px 2px rgba(21,23,26,.05),0 30px 60px -24px rgba(22,49,79,.5);}
@media(max-width:860px){ .thero{grid-template-columns:1fr;gap:24px;} .thero-app{justify-content:center;padding-right:0;} .thero-app video{max-width:240px;} .thero-app .app-frame{max-width:280px;} }

/* Tier key — three tiers of cooling (Science of Cool) */
.tier-block{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(28px,4vw,56px);align-items:center;margin-top:1.6rem;}
.tier-figure{display:flex;justify-content:center;}
.tier-figure img{width:100%;max-width:330px;height:auto;}
.tier-key{display:flex;flex-direction:column;}
.tier{display:flex;gap:16px;align-items:flex-start;padding:16px 0;border-top:1px solid var(--hair);}
.tier:first-of-type{border-top:none;padding-top:0;}
.tier .dot{flex:none;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-family:var(--ui);font-weight:700;font-size:.82rem;color:var(--white);margin-top:2px;}
.tier.t1 .dot{background:#9FB6CE;color:var(--clay-deep);}
.tier.t2 .dot{background:#3E6FA1;}
.tier.t3 .dot{background:#21468A;}
.tier h4{margin:0 0 .25rem;font-family:var(--ui);font-size:.95rem;letter-spacing:.01em;}
.tier h4 .tlabel{color:var(--ink-faint);font-weight:600;text-transform:uppercase;letter-spacing:.12em;font-size:.7rem;margin-left:.5rem;}
.tier p{margin:0;font-size:.9rem;color:var(--ink-soft);line-height:1.55;}
@media(max-width:860px){ .tier-block{grid-template-columns:1fr;gap:28px;} }

/* Engage feature — Inputs / Tiered output cards */
.io-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:2rem;align-items:stretch;}
.io-card{background:var(--white);border:1px solid var(--hair-strong);border-radius:14px;padding:clamp(22px,2.4vw,30px);box-shadow:0 1px 2px rgba(21,23,26,.04),0 18px 40px -28px rgba(22,49,79,.4);}
.io-card .io-eyebrow{font-family:var(--ui);font-weight:700;text-transform:uppercase;letter-spacing:.14em;font-size:.7rem;color:var(--clay);margin:0 0 1rem;display:flex;align-items:center;gap:9px;}
.io-card .io-eyebrow::before{content:"";width:22px;height:1px;background:var(--clay);opacity:.5;}
.io-card p{margin:0 0 .7rem;font-size:.95rem;color:var(--ink-soft);line-height:1.6;}
.io-card p:last-child{margin-bottom:0;}
@media(max-width:720px){ .io-grid{grid-template-columns:1fr;} }

/* reasoned list — clean editorial bullets */
.reasons{list-style:none;padding:0;margin:1.4rem 0;}
.reasons li{position:relative;padding:0 0 1rem 1.5rem;line-height:1.6;}
.reasons li::before{content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:50%;background:var(--clay);}
.reasons li:last-child{padding-bottom:0;}
.figure.figure-img{padding:0;overflow:hidden;border-color:var(--hair-strong);}
.figure.figure-img img{display:block;width:100%;height:100%;min-height:360px;object-fit:cover;}

/* section reveal-on-scroll (motion-safe, JS-gated) */
.reveal-on section.reveal{opacity:0;transform:translateY(22px);transition:opacity .8s cubic-bezier(.16,1,.3,1), transform .8s cubic-bezier(.16,1,.3,1);}
.reveal-on section.reveal.in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){
  .reveal-on section.reveal{opacity:1;transform:none;transition:none;}
}

/* ---------- Reading article ---------- */
.article{padding-top:clamp(2.5rem,5vw,4rem);}
.article .read h2{margin-top:2.4em;font-size:1.7rem;}
.article .read h3{margin-top:1.8em;}
.article .read ul,.article .read ol{padding-left:1.3em;margin:0 0 1.3em;}
.article .read li{margin-bottom:.5em;}
.article .read blockquote{
  margin:2em 0;padding:1.1em 1.4em;background:var(--paper-2);
  border-left:2px solid var(--hair-strong);border-radius:4px;
  font-size:.96rem;color:var(--ink-soft);
}
.article .read table{width:100%;border-collapse:collapse;margin:2em 0;font-size:.92rem;}
.article .read th,.article .read td{text-align:left;padding:.7em .8em;border-bottom:1px solid var(--hair);vertical-align:top;}
.article .read th{font-family:var(--ui);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint);}
.article .read em{font-style:italic;}
.flag{display:inline;background:transparent;color:var(--pop);border:1px solid var(--pop);font-family:var(--ui);font-size:.74rem;padding:.05em .45em;border-radius:999px;}

/* inline citations + per-page sources */
.cite{font-family:var(--ui);font-size:.62em;font-weight:600;vertical-align:super;line-height:0;color:var(--clay);text-decoration:none;}
.cite:hover{text-decoration:underline;}
.sources{margin-top:2.4rem;border-top:1px solid var(--hair);padding-top:1.1rem;font-family:var(--ui);font-size:.82rem;line-height:1.7;color:var(--ink-faint);}
.sources .lbl{display:block;font-size:.64rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:.5rem;}
.sources ol{margin:0;padding-left:1.4em;}
.sources li{margin-bottom:.3em;}
.sources a{color:var(--clay);}
.refs{font-size:.9rem;color:var(--ink-soft);}
.refs ol{padding-left:1.4em;}
.title-block{max-width:var(--readw);margin:0 auto 2.6rem;padding:0 32px;}
.title-block h1{font-size:clamp(2.1rem,4.5vw,3.4rem);font-weight:300;}
.title-block .sub{font-family:var(--display);font-style:italic;color:var(--ink-soft);font-size:1.2rem;}
.byline{font-family:var(--ui);font-size:.82rem;color:var(--ink-faint);margin-top:1.1rem;display:flex;gap:14px;flex-wrap:wrap;align-items:center;}

/* ---------- Forum ---------- */
.forum-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;}
.cats{display:flex;gap:10px;flex-wrap:wrap;margin:1.8rem 0 2.6rem;}
.cat{font-family:var(--ui);font-size:.8rem;font-weight:500;padding:.5em 1em;border-radius:2px;border:1px solid var(--hair-strong);color:var(--ink-soft);cursor:pointer;background:transparent;}
.cat.active,.cat:hover{background:var(--clay);color:var(--white);border-color:var(--clay);}
.thread{
  display:grid;grid-template-columns:auto 1fr auto;gap:20px;align-items:center;
  padding:22px 4px;border-bottom:1px solid var(--hair);
}
.thread .av{width:42px;height:42px;border-radius:50%;background:var(--paper-3);display:flex;align-items:center;justify-content:center;font-family:var(--ui);font-weight:600;color:var(--clay);font-size:.95rem;border:1px solid var(--hair);}
.thread .body h3{font-family:var(--ui);font-weight:600;letter-spacing:-.005em;font-size:1.06rem;line-height:1.35;margin:0 0 5px;}
.thread .body h3 a{color:var(--ink);}
.thread .body h3 a:hover{color:var(--clay);}
.thread .body .sub{font-family:var(--ui);font-size:.82rem;color:var(--ink-faint);}
.thread .stat{text-align:center;font-family:var(--ui);min-width:62px;}
.thread .stat b{display:block;font-family:var(--ui);font-weight:700;font-size:1.18rem;color:var(--ink);}
.thread .stat span{font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint);}
.composer{background:var(--white);border:1px solid var(--hair);border-radius:2px;padding:24px;margin-bottom:2.4rem;}
.composer input,.composer textarea,.composer select{
  width:100%;font-family:var(--serif);font-size:1rem;color:var(--ink);
  background:var(--paper);border:1px solid var(--hair-strong);border-radius:5px;
  padding:.7em .85em;margin-bottom:12px;
}
.composer textarea{min-height:90px;resize:vertical;}
.composer label{font-family:var(--ui);font-size:.74rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint);display:block;margin-bottom:6px;}
.composer .row{display:flex;gap:14px;}
.composer .row>div{flex:1;}

/* reply / thread view */
.post{display:grid;grid-template-columns:52px 1fr;gap:18px;padding:24px 0;border-bottom:1px solid var(--hair);}
.post .av{width:52px;height:52px;}
.post .who{font-family:var(--ui);font-size:.86rem;color:var(--ink);font-weight:600;}
.post .who span{color:var(--ink-faint);font-weight:400;margin-left:8px;font-size:.8rem;}
.post p{margin:.5em 0 0;font-size:1rem;}

/* ---------- Gate ---------- */
.gate{min-height:100vh;display:grid;grid-template-columns:1.1fr .9fr;background:var(--paper);}
.gate-art{background:var(--paper);color:var(--ink);padding:clamp(48px,6vw,88px);display:flex;flex-direction:column;justify-content:center;gap:clamp(1.75rem,4vh,3rem);border-right:1px solid var(--hair);}
.gate-art .brand{color:var(--ink);}
.gate-art .lib{color:var(--ink-faint);}
.gate-art .eyebrow{margin-bottom:1rem;}
.gate-art h1{color:var(--ink);font-weight:400;letter-spacing:-.005em;font-size:clamp(2.5rem,3.8vw,3.7rem);line-height:1.06;margin-bottom:1.3rem;}
.gate-art .lede{color:var(--ink-soft);margin-top:0;font-size:1rem;line-height:1.6;max-width:none;}
.gate-art h1 .sans{max-width:none;}
/* frame the entrance copy in a skinny hairline panel (desktop + mobile) */
.gate-art .gate-copy{border:1px solid var(--hair-strong);border-radius:18px;padding:clamp(30px,2.8vw,46px) clamp(30px,2.8vw,46px) clamp(32px,3vw,48px);}
.gate-art .gate-copy .lede{margin-bottom:0;}
.gate-art .foot{font-family:var(--ui);font-size:.76rem;color:var(--ink-faint);letter-spacing:.02em;line-height:1.7;background:transparent!important;border:none;border-top:1px solid var(--hair);padding:1.1rem 0 0;}
.gate-form{display:flex;flex-direction:column;justify-content:center;padding:clamp(84px,12vh,148px) clamp(36px,5vw,72px);}
.gate-form .box{max-width:380px;width:100%;margin:0 auto;}
.gate-form .box.join + .box{margin-top:40px;padding-top:36px;border-top:1px solid var(--hair-strong);}
.gate-form input{
  width:100%;font-family:var(--serif);font-size:1.05rem;color:var(--ink);
  background:var(--white);border:1px solid var(--hair-strong);border-radius:2px;
  padding:.85em 1em;margin-bottom:14px;
}
.gate-form input:focus{outline:none;border-color:var(--clay);}
.gate-form .btn{width:100%;justify-content:center;}
.gate-form .btn.clay{background:var(--white);color:var(--clay-deep);border-color:var(--clay-deep);}
.gate-form .btn.clay:hover{background:var(--clay-deep);color:var(--white);border-color:var(--clay-deep);}
.hint{font-family:var(--ui);font-size:.78rem;color:var(--ink-faint);background:transparent;border:1px solid var(--hair-strong);border-radius:2px;padding:13px 15px;margin-top:18px;line-height:1.6;}
.err{font-family:var(--ui);font-size:.82rem;color:#a23b2b;margin-bottom:10px;min-height:1.2em;}

/* ---------- Footer ---------- */
.foot{border-top:1px solid var(--hair);background:var(--paper);}
.foot-inner{max-width:var(--maxw);margin:0 auto;padding:46px 32px;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;}
.foot .brand{color:var(--ink);}
.foot h4{color:var(--ink);}
.foot a{display:block;font-family:var(--ui);font-size:.86rem;color:var(--ink-soft);margin-bottom:9px;}
.foot a:hover{color:var(--clay);}
.foot .gov{font-family:var(--ui);font-size:.78rem;color:var(--ink-faint);line-height:1.7;max-width:40ch;}
.foot-base{border-top:1.5px solid var(--clay-deep);font-family:var(--ui);font-size:.76rem;color:var(--ink-faint);}
.foot-base .wrap{padding-top:20px;padding-bottom:20px;display:flex;justify-content:space-between;gap:16px 28px;flex-wrap:wrap;align-items:baseline;}
.foot-base .foot-copy{color:var(--ink-faint);}
/* legal links: a tidy inline row, not stacked blocks */
.foot-legal{display:flex;gap:22px;align-items:baseline;flex-wrap:wrap;}
.foot-base a{display:inline;margin:0;font-family:var(--ui);font-size:.76rem;color:var(--ink-soft);text-decoration:underline;text-underline-offset:2px;text-decoration-color:var(--hair-strong);}
.foot-base a:hover{color:var(--clay);text-decoration-color:var(--clay);}
/* disclaimer sits on its own quiet line beneath */
.foot-base .foot-note-row{padding-top:0;}
.foot-note{margin:0;color:var(--ink-faint);font-size:.72rem;line-height:1.55;max-width:88ch;}

/* confidential banner note (prototype) */
.proto-note{font-family:var(--ui);font-size:.72rem;letter-spacing:.04em;text-align:center;color:var(--ink-faint);background:var(--paper-3);padding:7px 16px;border-bottom:1px solid var(--hair);}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .grid.cols-3{grid-template-columns:1fr 1fr;}
  .split{grid-template-columns:1fr;gap:34px;}
  .gate{grid-template-columns:1fr;}
  .gate-art{min-height:auto;}
  .foot-inner{grid-template-columns:1fr 1fr;}
  .nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);
    flex-direction:column;padding:18px 32px;border-bottom:1px solid var(--hair);gap:16px;}
  .nav-links.open{display:flex;}
  .nav-links a.active{border:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;background:none;border:1px solid var(--hair-strong);
    border-radius:2px;padding:8px 10px;font-family:var(--ui);font-size:.8rem;cursor:pointer;color:var(--ink);}
}
@media(max-width:620px){
  body{font-size:17px;}
  .grid.cols-3,.grid.cols-2{grid-template-columns:1fr;}
  .thread{grid-template-columns:auto 1fr;}
  .thread .stat{display:none;}
  .foot-inner{grid-template-columns:1fr;}
}

/* ============================================================
   Navigation chrome
   TOP nav = site navigation (full-width, fixed).
   SIDE nav = on-page navigation ("On this page" accordion).
   ============================================================ */
:root{ --navh:76px; --side-w:256px; }
[id]{scroll-margin-top:calc(var(--navh) + 18px);}

/* layout offsets: top for the fixed site-nav, left for the on-page TOC */
body.has-side{ padding-top:var(--navh); }
@media(min-width:981px){ body.has-side{ padding-left:var(--side-w); } }

/* on-page side menu */
.side{
  position:fixed;top:var(--navh);left:0;bottom:0;width:var(--side-w);z-index:60;
  background:var(--paper);border-right:1px solid var(--hair);
  display:flex;flex-direction:column;overflow:hidden;
}
.side-head{font-family:var(--ui);font-size:.66rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-faint);padding:20px 20px 6px;}
.side-nav{flex:1;overflow-y:auto;padding:4px 12px 24px;}
.side-foot{padding:13px 18px;border-top:1px solid var(--hair);display:flex;align-items:center;gap:8px;}
.side-foot .dot{width:7px;height:7px;border-radius:50%;background:var(--sage);display:inline-block;}
.side-foot span{font-family:var(--ui);font-size:.74rem;color:var(--ink-faint);}

.acc{}
.acc-top{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  font-family:var(--ui);font-size:.82rem;font-weight:600;letter-spacing:.02em;color:var(--ink);
  padding:8px 10px;display:flex;justify-content:space-between;align-items:center;gap:8px;
}
.acc-top:hover{color:var(--clay);}
.acc-top .pm{color:var(--ink-faint);font-size:.62rem;transition:transform .2s;}
.acc.open>.acc-top .pm{transform:rotate(90deg);}
.acc-body{display:none;padding:2px 0 8px;}
.acc.open>.acc-body{display:block;}
.acc-link{
  display:flex;gap:7px;align-items:baseline;font-family:var(--ui);font-size:.9rem;color:var(--ink-soft);
  padding:8px 12px 8px 14px;border-left:2px solid var(--hair);line-height:1.4;
}
.acc-link .nn{flex:none;}
.acc-link:hover{color:var(--ink);background:var(--paper-2);border-left-color:var(--hair-strong);}
.acc-link.active{color:var(--clay);border-left-color:var(--clay);font-weight:600;background:var(--paper-2);}

.proto-strip{
  font-family:var(--ui);font-size:.68rem;letter-spacing:.04em;text-align:center;color:var(--ink-faint);
  background:var(--paper-2);padding:7px 16px;border-bottom:1px solid var(--hair);
}
.side-scrim{display:none;}

/* mobile bar controls — hidden on desktop */
.browse-toggle,.nav-toggle{display:none;}
.browse-menu{display:none;}
.browse-toggle,.nav-toggle{
  align-items:center;background:none;border:1px solid var(--hair-strong);border-radius:1px;
  padding:9px 13px;font-family:var(--ui);font-size:.64rem;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;cursor:pointer;color:var(--ink);
}
.browse-toggle[aria-expanded="true"],.nav-toggle[aria-expanded="true"]{background:var(--clay);color:var(--white);border-color:var(--clay);}

@media(max-width:980px){
  .side{display:none;}
  .nav-inner{gap:12px;}
  .nav-links{display:none;position:fixed;top:var(--navh);left:0;right:0;background:var(--paper);
    flex-direction:column;padding:14px 28px 20px;border-bottom:1px solid var(--hair);gap:2px;z-index:70;box-shadow:var(--shadow);max-height:74vh;overflow:auto;}
  .nav-links.open{display:flex;}
  .nav-links a{padding:12px 0;border-bottom:1px solid var(--hair);font-size:.95rem;}
  .nav-links a:last-child{border-bottom:none;}
  .nav-links a.active{border-bottom:1px solid var(--hair);color:var(--clay);}
  .nav-signout{align-self:flex-start;margin-top:10px;}
  /* dropdowns become indented static lists in the mobile menu */
  .nav-item{display:block;width:100%;}
  .nav-car{display:none;}
  .nav-drop{position:static;opacity:1;visibility:visible;transform:none;border:none;box-shadow:none;
    background:transparent;padding:0 0 8px 16px;min-width:0;border-radius:0;}
  .nav-drop a{font-size:.86rem;color:var(--ink-faint);padding:9px 0;border-bottom:1px solid var(--hair);border-radius:0;}
  .nav-drop a:hover{background:transparent;color:var(--ink);}
  .browse-toggle{display:inline-flex;margin-left:auto;}
  .nav-toggle{display:inline-flex;}
  .browse-menu.open{display:block;position:fixed;top:var(--navh);left:0;right:0;background:var(--paper);
    border-bottom:1px solid var(--hair);max-height:74vh;overflow:auto;z-index:70;padding:6px 0 14px;box-shadow:var(--shadow);}
  .browse-menu .browse-head{font-family:var(--ui);font-size:.6rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-faint);padding:16px 28px 8px;}
  .browse-menu .acc-link{display:block;font-family:var(--ui);font-size:.92rem;color:var(--ink-soft);padding:11px 28px;border-left:none;border-bottom:1px solid var(--hair);}
  .browse-menu .acc-link.active{color:var(--clay);background:var(--paper-2);}
}

/* ---------- Mobile typography & spacing hierarchy ---------- */
@media(max-width:640px){
  body{font-size:16px;}
  section{padding:2.6rem 0;}
  .wrap{padding:0 22px;}
  .hero{padding-top:1.6rem;}
  .eyebrow{font-size:.62rem;letter-spacing:.2em;margin:0 0 1rem;}
  h1{font-size:2.1rem;line-height:1.12;letter-spacing:-.01em;margin-bottom:.5em;}
  h2{font-size:1.6rem;line-height:1.16;}
  h3{font-size:1.25rem;}
  .lede{font-size:1.06rem;line-height:1.5;margin-top:1rem;}
  /* hero sub-line sits as a clear second tier under the headline */
  .hero h1 .sans,.gate-art h1 .sans{font-size:1.05rem!important;margin-top:.85rem!important;}
  .hero-actions{margin-top:1.6rem;gap:10px;}
  /* gate: tighten the entry panel and headline so it reads on a phone */
  .gate-art{padding:26px 22px 8px;gap:1.2rem;}
  /* mobile only: frame the entrance copy in a skinny hairline panel */
  .gate-art .gate-copy{border:1px solid var(--hair-strong);border-radius:16px;padding:26px 22px 28px;}
  .gate-art h1{font-size:2.1rem;line-height:1.12;}
  .gate-form{padding:6px 22px 52px;}
  .brand{font-size:1.24rem;}
  .brand .lib{font-size:.6rem;letter-spacing:.14em;margin-left:.55em;padding-left:.55em;}
  .split{gap:26px;}
}

/* ---- elevate index / forum / participate to library treatment ---- */
.eform{max-width:680px;background:var(--white);border:1px solid var(--hair-strong);border-radius:14px;padding:clamp(24px,3vw,40px);box-shadow:0 1px 2px rgba(21,23,26,.03),0 22px 46px -32px rgba(21,23,26,.2);}
.composer{border:1px solid var(--hair-strong);border-radius:14px;box-shadow:0 1px 2px rgba(21,23,26,.03),0 22px 46px -32px rgba(21,23,26,.2);padding:clamp(22px,3vw,32px);}
#thread-list{display:flex;flex-direction:column;gap:14px;}
.thread{border:1px solid var(--hair);border-bottom:1px solid var(--hair);border-radius:14px;padding:20px 22px;box-shadow:0 1px 2px rgba(21,23,26,.03),0 16px 36px -32px rgba(21,23,26,.18);transition:transform .2s,box-shadow .2s,border-color .2s;}
.thread:hover{transform:translateY(-3px);border-color:var(--hair-strong);box-shadow:0 1px 2px rgba(21,23,26,.04),0 26px 50px -28px rgba(21,23,26,.28);}
.index-group{margin-top:1.8rem;background:var(--white);border:1px solid var(--hair-strong);border-radius:14px;padding:6px 26px 16px;box-shadow:0 1px 2px rgba(21,23,26,.03),0 18px 40px -34px rgba(21,23,26,.18);}
.index-group:first-of-type{margin-top:1rem;}

/* breadcrumb — shows a child page's parent program and a path back up */
.crumb{font-family:var(--ui);font-size:.74rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint);margin:0 0 1.1rem;display:flex;align-items:center;gap:.6em;flex-wrap:wrap;}
.crumb a{color:var(--clay);text-decoration:none;display:inline-flex;align-items:center;gap:.45em;}
.crumb a:hover{color:var(--clay-deep);}
.crumb .sep{color:var(--hair-strong);}
.crumb .here{color:var(--ink-faint);}

/* ---------- Accessibility ---------- */
.skip-link{position:fixed;top:-60px;left:12px;z-index:200;background:var(--clay);color:#fff;
  padding:10px 16px;border-radius:9px;font-family:var(--ui);font-size:.85rem;font-weight:600;
  text-decoration:none;transition:top .16s ease;}
.skip-link:focus{top:12px;outline:2px solid #fff;outline-offset:2px;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,
.btn:focus-visible,.card.prog:focus-visible,.acc-link:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--clay);outline-offset:3px;border-radius:4px;}

/* ===================== Elevated polish (luxury pass) ===================== */
:root{ --ease:cubic-bezier(.16,1,.3,1); }
/* fixed-nav offset so in-page anchors (e.g. Participate → #interest) land clean */
html{scroll-padding-top:92px;}
[id]{scroll-margin-top:92px;}
/* buttons: deliberate motion + quiet, architectural depth */
.btn{transition:background .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);}
.btn.clay{box-shadow:0 1px 2px rgba(20,30,41,.06),0 14px 30px -18px rgba(40,55,71,.5);}
.btn.clay:hover{transform:translateY(-1px);box-shadow:0 2px 5px rgba(20,30,41,.08),0 22px 40px -16px rgba(40,55,71,.55);}
.btn.ghost:hover{transform:translateY(-1px);}
/* link-arrow: the arrow eases forward, an editorial "read on" cue */
.link-arrow .ar{display:inline-block;transition:transform .25s var(--ease);}
.link-arrow:hover .ar{transform:translateX(4px);}
.foot-platform .ar,.foot-cta .ar{display:inline-block;transition:transform .25s var(--ease);}
.foot-platform:hover .ar{transform:translate(3px,-3px);}
/* cards lift with a softer, deeper gallery shadow */
.card{transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);}
.card:hover{transform:translateY(-3px);box-shadow:0 2px 4px rgba(21,23,26,.04),0 30px 60px -36px rgba(22,49,79,.45);}
/* the study-context banner on Participate shares the tray treatment */
#study-context b{color:var(--ink);font-weight:600;}