/* =========================================================
   TARAGONA CIRCLE — DESIGN SYSTEM
   Research Archive × Engineering Institution × Intellectual Society
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600&display=swap');

:root{
  /* -- surfaces -- */
  --bg-void:        #0a0b0c;
  --bg-graphite:    #0d0f10;
  --bg-charcoal:    #131615;
  --bg-charcoal-2:  #171b19;
  --bg-panel:       #15181a;

  /* -- accent : deep forest green, used sparingly -- */
  --accent:         #1f4a3a;
  --accent-mid:     #2f6b52;
  --accent-bright:  #4fae82;
  --accent-signal:  #6fd9a3;

  /* -- text -- */
  --ink:            #eeece5;
  --ink-dim:        #b9bab3;
  --ink-mute:       #74786f;
  --ink-faint:      #494d47;

  /* -- lines -- */
  --line:           rgba(238,236,229,0.09);
  --line-strong:    rgba(238,236,229,0.16);
  --line-accent:    rgba(111,217,163,0.35);

  /* -- type -- */
  --f-display:      'Space Grotesk', sans-serif;
  --f-body:         'Inter', sans-serif;

  /* -- layout -- */
  --edge:           clamp(20px, 5vw, 72px);
  --max:            1320px;
  --nav-h:          84px;
  --nav-h-scrolled: 62px;

  --ease:           cubic-bezier(.16,.84,.44,1);
  --ease-soft:      cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after{ box-sizing:border-box; }

html{
  background:var(--bg-void);
  scroll-behavior:smooth;
}
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; }
}

body{
  margin:0;
  background:var(--bg-void);
  color:var(--ink);
  font-family:var(--f-body);
  font-weight:400;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  position:relative;
}

/* subtle film grain, fixed, extremely low opacity */
body::before{
  content:"";
  position:fixed; inset:0;
  z-index:2;
  pointer-events:none;
  opacity:0.035;
  mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

h1,h2,h3,h4,h5,h6{ font-family:var(--f-display); font-weight:500; margin:0; letter-spacing:-0.01em; }
p{ margin:0; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family:inherit; background:none; border:none; color:inherit; cursor:pointer; }
img,svg{ display:block; max-width:100%; }

.container{ max-width:var(--max); margin:0 auto; padding-left:var(--edge); padding-right:var(--edge); }

.eyebrow{
  font-family:var(--f-display);
  font-size:12px;
  letter-spacing:0.22em;
  text-transform:uppercase;
  color:var(--accent-signal);
  display:flex; align-items:center; gap:10px;
}
.eyebrow::before{
  content:"";
  width:14px; height:1px;
  background:var(--accent-signal);
}

.mono-num{ font-family:var(--f-display); font-variant-numeric:tabular-nums; letter-spacing:0.05em; color:var(--ink-mute); }

/* ---------- buttons ---------- */
.btn{
  font-family:var(--f-display);
  font-size:13px;
  letter-spacing:0.06em;
  text-transform:uppercase;
  display:inline-flex; align-items:center; gap:10px;
  padding:15px 26px;
  border:1px solid var(--line-strong);
  border-radius:2px;
  color:var(--ink);
  position:relative;
  overflow:hidden;
  transition:border-color .4s var(--ease), color .4s var(--ease);
  white-space:nowrap;
}
.btn::before{
  content:"";
  position:absolute; inset:0;
  background:var(--accent);
  transform:translateY(101%);
  transition:transform .45s var(--ease);
  z-index:-1;
}
.btn:hover{ border-color:var(--accent-bright); }
.btn:hover::before{ transform:translateY(0); }
.btn-solid{
  background:var(--accent);
  border-color:var(--accent);
}
.btn-solid::before{ background:var(--accent-bright); }
.btn-ghost{ border-color:transparent; padding-left:0; padding-right:0; }
.btn-ghost::before{ display:none; }
.btn-ghost:hover{ color:var(--accent-signal); }
.btn-ghost .arrow{ transition:transform .35s var(--ease); }
.btn-ghost:hover .arrow{ transform:translateX(6px); }

/* =========================================================
   NAVIGATION
   ========================================================= */
.site-nav{
  position:fixed; top:0; left:0; right:0; z-index:100;
  height:var(--nav-h);
  display:flex; align-items:center;
  background:linear-gradient(to bottom, rgba(10,11,12,0.86), rgba(10,11,12,0));
  backdrop-filter:blur(6px);
  transition:height .4s var(--ease-soft), background .4s var(--ease-soft), border-color .4s var(--ease-soft);
  border-bottom:1px solid transparent;
}
.site-nav.scrolled{
  height:var(--nav-h-scrolled);
  background:rgba(10,11,12,0.92);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  width:100%;
  display:flex; align-items:center; justify-content:space-between;
}
.nav-mark{
  font-family:var(--f-display);
  font-size:15px;
  font-weight:600;
  letter-spacing:0.12em;
  display:flex; align-items:center; gap:10px;
}
.nav-mark .dot{
  width:7px; height:7px; border-radius:50%;
  background:var(--accent-signal);
  box-shadow:0 0 8px 1px var(--accent-signal);
}
.nav-links{ display:flex; align-items:center; gap:38px; }
.nav-links a{
  font-family:var(--f-display);
  font-size:12.5px;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--ink-dim);
  position:relative;
  padding:6px 0;
  transition:color .3s;
}
.nav-links a::after{
  content:"";
  position:absolute; left:0; bottom:0; height:1px; width:0;
  background:var(--accent-signal);
  transition:width .35s var(--ease);
}
.nav-links a:hover{ color:var(--ink); }
.nav-links a:hover::after{ width:100%; }
.nav-links a.active{ color:var(--ink); }
.nav-links a.active::after{ width:100%; }

.nav-cta{
  font-family:var(--f-display);
  font-size:12px;
  letter-spacing:0.1em;
  text-transform:uppercase;
  border:1px solid var(--line-strong);
  padding:10px 18px;
  display:flex; align-items:center; gap:8px;
  transition:border-color .3s, background .3s;
}
.nav-cta:hover{ border-color:var(--accent-bright); background:rgba(79,174,130,0.08); }

.nav-burger{
  display:none;
  flex-direction:column; gap:5px;
  width:26px; padding:4px 0;
}
.nav-burger span{ height:1px; width:100%; background:var(--ink); transition:transform .35s var(--ease), opacity .3s; }

.mobile-menu{
  position:fixed; inset:0; z-index:99;
  background:var(--bg-graphite);
  display:flex; flex-direction:column; justify-content:center;
  padding:var(--edge);
  transform:translateY(-100%);
  transition:transform .55s var(--ease);
  opacity:0;
}
.mobile-menu.open{ transform:translateY(0); opacity:1; }
.mobile-menu a{
  font-family:var(--f-display);
  font-size:clamp(28px,7vw,44px);
  padding:14px 0;
  border-bottom:1px solid var(--line);
  color:var(--ink-dim);
}
.mobile-menu .nav-cta{ margin-top:30px; align-self:flex-start; }

@media (max-width: 880px){
  .nav-links{ display:none; }
  .nav-cta{ display:none; }
  .nav-burger{ display:flex; }
}

/* =========================================================
   HERO — THE SIGNAL
   ========================================================= */
.hero{
  position:relative;
  min-height:100vh;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  text-align:center;
  overflow:hidden;
  background:radial-gradient(ellipse at 50% 30%, #0f1412 0%, var(--bg-void) 62%);
}
#signal-canvas{
  position:absolute; inset:0;
  width:100%; height:100%;
  z-index:0;
}
.hero-content{ position:relative; z-index:2; padding:0 var(--edge); max-width:980px; }
.hero-sequence{
  font-family:var(--f-display);
  font-size:clamp(14px, 2vw, 18px);
  letter-spacing:0.08em;
  color:var(--ink-dim);
  min-height:1.6em;
  margin-bottom:34px;
  opacity:0;
  animation:fadeUp 1.2s var(--ease) 0.3s forwards;
}
.hero-sequence span{ display:block; opacity:0.4; }
.hero-sequence span.lit{ color:var(--accent-signal); opacity:1; text-shadow:0 0 18px rgba(111,217,163,0.4); }

.hero-title{
  font-size:clamp(42px, 9vw, 108px);
  line-height:0.98;
  letter-spacing:-0.02em;
  font-weight:600;
  opacity:0;
  animation:fadeUp 1.1s var(--ease) 1.6s forwards;
}
.hero-sub{
  margin-top:26px;
  font-family:var(--f-display);
  font-size:clamp(14px,1.6vw,17px);
  letter-spacing:0.03em;
  color:var(--accent-signal);
  opacity:0;
  animation:fadeUp 1.1s var(--ease) 2s forwards;
}
.hero-desc{
  margin:18px auto 0;
  max-width:560px;
  color:var(--ink-dim);
  font-size:16px;
  font-style:italic;
  opacity:0;
  animation:fadeUp 1.1s var(--ease) 2.25s forwards;
}
.hero-buttons{
  margin-top:46px;
  display:flex; gap:20px; justify-content:center; flex-wrap:wrap;
  opacity:0;
  animation:fadeUp 1.1s var(--ease) 2.5s forwards;
}
.hero-scroll-cue{
  position:absolute; bottom:34px; left:50%; transform:translateX(-50%);
  z-index:2;
  display:flex; flex-direction:column; align-items:center; gap:8px;
  font-family:var(--f-display); font-size:10.5px; letter-spacing:0.2em; text-transform:uppercase;
  color:var(--ink-mute);
  opacity:0;
  animation:fadeUp 1s var(--ease) 3s forwards;
}
.hero-scroll-cue .line{ width:1px; height:34px; background:linear-gradient(var(--accent-signal), transparent); animation:pulseLine 2.4s ease-in-out infinite; }

@keyframes fadeUp{ from{ opacity:0; transform:translateY(18px);} to{ opacity:1; transform:translateY(0);} }
@keyframes pulseLine{ 0%,100%{ opacity:0.3;} 50%{ opacity:1;} }

/* =========================================================
   SECTION SCAFFOLDING
   ========================================================= */
.section{ position:relative; padding:150px 0; }
.section-tight{ padding:100px 0; }
.section-border-top{ border-top:1px solid var(--line); }
.section-charcoal{ background:var(--bg-charcoal); }

.section-head{ max-width:760px; margin-bottom:64px; }
.section-head h2{ font-size:clamp(30px,4.6vw,54px); margin-top:18px; letter-spacing:-0.015em; }
.section-head .lede{ margin-top:20px; color:var(--ink-dim); font-size:17px; max-width:600px; font-style:italic; }

.reveal{ opacity:0; transform:translateY(28px); transition:opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.in{ opacity:1; transform:translateY(0); }
.reveal-stagger > *{ opacity:0; transform:translateY(24px); transition:opacity .8s var(--ease), transform .8s var(--ease); }
.reveal-stagger.in > *{ opacity:1; transform:translateY(0); }
.reveal-stagger.in > *:nth-child(1){ transition-delay:.05s; }
.reveal-stagger.in > *:nth-child(2){ transition-delay:.15s; }
.reveal-stagger.in > *:nth-child(3){ transition-delay:.25s; }
.reveal-stagger.in > *:nth-child(4){ transition-delay:.35s; }
.reveal-stagger.in > *:nth-child(5){ transition-delay:.45s; }
.reveal-stagger.in > *:nth-child(6){ transition-delay:.55s; }
.reveal-stagger.in > *:nth-child(7){ transition-delay:.65s; }
.reveal-stagger.in > *:nth-child(8){ transition-delay:.75s; }

/* =========================================================
   ORIGIN — three nodes
   ========================================================= */
.origin-grid{ display:grid; grid-template-columns:1fr 1fr; gap:70px; align-items:center; }
.origin-nodes{ position:relative; aspect-ratio:1/1; max-width:460px; }
.origin-nodes svg{ width:100%; height:100%; }
.origin-node-label{
  font-family:var(--f-display); font-size:12px; letter-spacing:0.1em; text-transform:uppercase; fill:var(--ink-dim);
}
.origin-text .lede{ font-style:italic; color:var(--ink-dim); font-size:18px; line-height:1.75; margin-bottom:34px; }

@media (max-width:880px){
  .origin-grid{ grid-template-columns:1fr; gap:50px; }
  .origin-nodes{ margin:0 auto; max-width:340px; }
}

/* =========================================================
   ECOSYSTEM DIAGRAM
   ========================================================= */
.ecosystem-wrap{ position:relative; }
.ecosystem-diagram{
  position:relative;
  width:100%;
  max-width:920px;
  aspect-ratio:1/1;
  margin:0 auto;
}
.eco-svg{ width:100%; height:100%; overflow:visible; }
.eco-orbit{ fill:none; stroke:var(--line); stroke-width:1; }
.eco-center-circle{ fill:var(--bg-charcoal-2); stroke:var(--line-accent); stroke-width:1; }
.eco-center-label{
  font-family:var(--f-display); font-size:15px; letter-spacing:0.05em; fill:var(--ink); text-anchor:middle;
}
.eco-node{ cursor:pointer; }
.eco-node circle.node-dot{ fill:var(--bg-panel); stroke:var(--line-strong); stroke-width:1; transition:stroke .3s, fill .3s; }
.eco-node:hover circle.node-dot, .eco-node.active circle.node-dot{ stroke:var(--accent-signal); fill:var(--accent); }
.eco-node text{ font-family:var(--f-display); pointer-events:none; }
.eco-node .node-num{ font-size:10px; fill:var(--ink-mute); letter-spacing:0.05em; }
.eco-node .node-name{ font-size:12.5px; fill:var(--ink-dim); transition:fill .3s; }
.eco-node:hover .node-name, .eco-node.active .node-name{ fill:var(--ink); }
.eco-line{ stroke:var(--line); stroke-width:1; transition:stroke .3s, stroke-width .3s; }
.eco-node:hover ~ .eco-line, .eco-line.active{ stroke:var(--accent-signal); }

.eco-preview{
  margin-top:40px;
  border:1px solid var(--line);
  background:var(--bg-panel);
  padding:30px 34px;
  display:flex; justify-content:space-between; align-items:flex-end; gap:30px; flex-wrap:wrap;
  opacity:0; max-height:0; overflow:hidden;
  transition:opacity .4s var(--ease), max-height .4s var(--ease), padding .4s var(--ease), margin .4s var(--ease);
}
.eco-preview.show{ opacity:1; max-height:260px; }
.eco-preview .eco-preview-num{ font-size:13px; color:var(--ink-mute); }
.eco-preview h4{ font-size:22px; margin-top:6px; }
.eco-preview .eco-preview-cat{ font-family:var(--f-display); font-size:11.5px; letter-spacing:0.1em; text-transform:uppercase; color:var(--accent-signal); margin-top:4px; }
.eco-preview p{ color:var(--ink-dim); font-size:14.5px; max-width:420px; margin-top:10px; }

/* =========================================================
   DEPARTMENT PREVIEW BLOCKS (homepage)
   ========================================================= */
.dept-block{
  display:grid; grid-template-columns:0.9fr 1.1fr;
  gap:60px;
  padding:70px 0;
  border-top:1px solid var(--line);
  align-items:center;
}
.dept-block:nth-child(even) .dept-visual{ order:2; }
.dept-num{ font-family:var(--f-display); font-size:15px; color:var(--ink-mute); letter-spacing:0.1em; }
.dept-cat{ font-family:var(--f-display); font-size:12px; letter-spacing:0.14em; text-transform:uppercase; color:var(--accent-signal); margin-top:14px; }
.dept-title{ font-size:clamp(30px,4vw,46px); margin-top:12px; }
.dept-status{ display:inline-block; margin-top:14px; font-family:var(--f-display); font-size:10.5px; letter-spacing:0.14em; text-transform:uppercase; color:var(--ink-mute); border:1px solid var(--line); padding:5px 10px; }
.dept-desc{ margin-top:22px; color:var(--ink-dim); font-size:16px; max-width:480px; }
.dept-keywords{ display:flex; gap:10px; margin-top:26px; flex-wrap:wrap; }
.dept-keywords span{
  font-family:var(--f-display); font-size:11px; letter-spacing:0.08em; text-transform:uppercase;
  color:var(--ink-mute); border:1px solid var(--line); padding:7px 12px;
}
.dept-block .btn{ margin-top:32px; }
.dept-visual{ position:relative; aspect-ratio:4/3; }
.dept-visual svg{ width:100%; height:100%; }

@media (max-width:900px){
  .dept-block{ grid-template-columns:1fr; }
  .dept-block:nth-child(even) .dept-visual{ order:0; }
}

/* =========================================================
   TIMELINE
   ========================================================= */
.timeline{ position:relative; margin-top:20px; }
.timeline-track{
  display:flex; gap:0; overflow-x:auto; padding-bottom:30px; scrollbar-width:thin;
  scroll-snap-type:x proximity;
}
.timeline-track::-webkit-scrollbar{ height:4px; }
.timeline-track::-webkit-scrollbar-thumb{ background:var(--line-strong); }
.timeline-item{
  min-width:230px; flex:0 0 auto;
  padding:26px 28px 26px 0;
  border-left:1px solid var(--line);
  padding-left:26px;
  position:relative;
  scroll-snap-align:start;
  cursor:pointer;
}
.timeline-item::before{
  content:""; position:absolute; left:-4.5px; top:0;
  width:8px; height:8px; border-radius:50%;
  background:var(--bg-void); border:1px solid var(--line-strong);
  transition:background .3s, border-color .3s, box-shadow .3s;
}
.timeline-item:hover::before, .timeline-item.active::before{
  background:var(--accent-signal); border-color:var(--accent-signal); box-shadow:0 0 10px 1px rgba(111,217,163,0.5);
}
.timeline-year{ font-family:var(--f-display); font-size:13px; color:var(--ink-mute); letter-spacing:0.08em; }
.timeline-title{ font-family:var(--f-display); font-size:19px; margin-top:10px; color:var(--ink); }
.timeline-desc{ margin-top:10px; font-size:14px; color:var(--ink-dim); line-height:1.6; }

/* =========================================================
   CONNECTION DIAGRAM
   ========================================================= */
.connection-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line); margin-top:20px; }
.connection-cell{ background:var(--bg-void); padding:44px 34px; display:flex; flex-direction:column; gap:16px; min-height:220px; }
.connection-node{ display:flex; flex-direction:column; gap:4px; }
.connection-node .cn-name{ font-family:var(--f-display); font-size:17px; }
.connection-node .cn-cat{ font-size:12px; color:var(--ink-mute); }
.connection-arrow{ color:var(--accent-signal); font-size:18px; align-self:center; }
@media (max-width:880px){ .connection-grid{ grid-template-columns:1fr; } }

/* =========================================================
   JOIN CTA
   ========================================================= */
.join-cta{
  text-align:center;
  padding:0;
}
.join-cta .lede{ max-width:640px; margin:26px auto 0; color:var(--ink-dim); font-style:italic; font-size:17px; }
.join-statement{ margin-top:58px; }
.join-statement h3{ font-size:clamp(28px,6vw,52px); line-height:1.15; }
.join-statement h3 .fade{ color:var(--ink-mute); }

/* =========================================================
   FORM
   ========================================================= */
.app-form{ max-width:760px; margin:60px auto 0; text-align:left; }
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:22px; }
.form-field{ margin-bottom:26px; }
.form-field label{ display:block; font-family:var(--f-display); font-size:11.5px; letter-spacing:0.1em; text-transform:uppercase; color:var(--ink-mute); margin-bottom:10px; }
.form-field input, .form-field textarea{
  width:100%;
  background:transparent;
  border:none; border-bottom:1px solid var(--line-strong);
  color:var(--ink); font-family:var(--f-body); font-size:15px;
  padding:10px 2px;
  transition:border-color .3s;
}
.form-field input:focus, .form-field textarea:focus{ outline:none; border-color:var(--accent-signal); }
.form-field textarea{ resize:vertical; min-height:100px; }
.form-submit{ margin-top:10px; display:flex; align-items:center; gap:20px; }
.form-note{ font-size:12.5px; color:var(--ink-mute); }
.form-success{ display:none; margin-top:26px; padding:20px; border:1px solid var(--line-accent); color:var(--accent-signal); font-size:14px; }
.form-success.show{ display:block; }
@media (max-width:640px){ .form-row{ grid-template-columns:1fr; } }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer{ border-top:1px solid var(--line); padding:80px 0 40px; }
.footer-top{ display:flex; justify-content:space-between; gap:40px; flex-wrap:wrap; padding-bottom:60px; border-bottom:1px solid var(--line); }
.footer-mark{ font-family:var(--f-display); font-size:22px; letter-spacing:0.06em; }
.footer-motto{ margin-top:12px; color:var(--ink-mute); font-size:13.5px; letter-spacing:0.02em; max-width:280px; }
.footer-links{ display:flex; gap:70px; flex-wrap:wrap; }
.footer-col h5{ font-family:var(--f-display); font-size:11px; letter-spacing:0.14em; text-transform:uppercase; color:var(--ink-mute); margin-bottom:18px; }
.footer-col a{ display:block; font-size:14.5px; color:var(--ink-dim); padding:6px 0; transition:color .3s; }
.footer-col a:hover{ color:var(--accent-signal); }
.footer-bottom{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:14px; padding-top:30px; font-size:12.5px; color:var(--ink-mute); }
.footer-bottom .honor{ font-style:italic; }

/* =========================================================
   PAGE HERO (secondary pages)
   ========================================================= */
.page-hero{
  padding:calc(var(--nav-h) + 90px) 0 90px;
  border-bottom:1px solid var(--line);
}
.page-hero .eyebrow{ margin-bottom:22px; }
.page-hero h1{ font-size:clamp(38px,7vw,84px); letter-spacing:-0.02em; }
.page-hero .sub{ margin-top:22px; font-size:17px; color:var(--ink-dim); max-width:600px; font-style:italic; }
.page-hero .meta-row{ display:flex; gap:40px; margin-top:36px; flex-wrap:wrap; }
.page-hero .meta-item .k{ font-family:var(--f-display); font-size:10.5px; letter-spacing:0.14em; text-transform:uppercase; color:var(--ink-mute); }
.page-hero .meta-item .v{ font-family:var(--f-display); font-size:16px; margin-top:6px; color:var(--ink); }

/* =========================================================
   DEPARTMENT DETAIL PAGE COMPONENTS
   ========================================================= */
.dept-detail-grid{ display:grid; grid-template-columns:220px 1fr; gap:70px; }
.dept-toc{ position:sticky; top:calc(var(--nav-h) + 30px); align-self:start; }
.dept-toc a{ display:block; font-size:13px; color:var(--ink-mute); padding:9px 0 9px 16px; border-left:1px solid var(--line); transition:color .3s, border-color .3s; }
.dept-toc a:hover, .dept-toc a.active{ color:var(--accent-signal); border-color:var(--accent-signal); }
.dept-section{ padding-bottom:80px; margin-bottom:80px; border-bottom:1px solid var(--line); scroll-margin-top:120px; }
.dept-section:last-child{ border-bottom:none; margin-bottom:0; }
.dept-section h3{ font-size:clamp(24px,3vw,34px); margin-bottom:24px; }
.dept-section p{ color:var(--ink-dim); font-size:16px; max-width:680px; margin-bottom:16px; }
.tag-list{ display:flex; flex-wrap:wrap; gap:10px; margin-top:10px; }
.tag-list span{ font-family:var(--f-display); font-size:12px; letter-spacing:0.05em; border:1px solid var(--line); padding:8px 14px; color:var(--ink-dim); }
.archive-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--line); border:1px solid var(--line); margin-top:10px; }
.archive-item{ background:var(--bg-void); padding:28px 26px; }
.archive-item .a-k{ font-family:var(--f-display); font-size:11px; color:var(--ink-mute); letter-spacing:0.1em; text-transform:uppercase; }
.archive-item .a-v{ font-family:var(--f-display); font-size:16px; margin-top:10px; color:var(--ink-faint); }
.related-row{ display:flex; gap:16px; flex-wrap:wrap; margin-top:10px; }
.related-chip{ border:1px solid var(--line); padding:14px 20px; font-family:var(--f-display); font-size:13px; display:flex; align-items:center; gap:10px; transition:border-color .3s, color .3s; color:var(--ink-dim); }
.related-chip:hover{ border-color:var(--accent-bright); color:var(--ink); }
@media (max-width:880px){ .dept-detail-grid{ grid-template-columns:1fr; } .dept-toc{ display:none; } .archive-grid{ grid-template-columns:1fr; } }

/* =========================================================
   LEADERSHIP
   ========================================================= */
.tier-block{ margin-bottom:110px; }
.tier-label{ display:flex; align-items:baseline; gap:18px; margin-bottom:50px; }
.tier-label .tn{ font-family:var(--f-display); font-size:64px; color:var(--ink-faint); line-height:1; }
.leader-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line); }
.leader-cell{ background:var(--bg-void); padding:50px 34px; position:relative; overflow:hidden; }
.leader-cell .l-index{ font-family:var(--f-display); font-size:12px; color:var(--ink-mute); }
.leader-cell .l-name{ font-family:var(--f-display); font-size:26px; margin-top:26px; }
.leader-cell .l-role{ margin-top:10px; font-size:13px; color:var(--ink-mute); letter-spacing:0.03em; }
.leader-cell .l-ring{ position:absolute; right:-40px; bottom:-40px; width:140px; height:140px; border:1px solid var(--line); border-radius:50%; }
@media (max-width:880px){ .leader-grid{ grid-template-columns:1fr; } }

/* =========================================================
   RESEARCH PAGE
   ========================================================= */
.filter-row{ display:flex; gap:10px; flex-wrap:wrap; margin-bottom:50px; }
.filter-btn{
  font-family:var(--f-display); font-size:12px; letter-spacing:0.08em; text-transform:uppercase;
  border:1px solid var(--line); padding:10px 18px; color:var(--ink-mute); transition:all .3s;
}
.filter-btn.active, .filter-btn:hover{ color:var(--ink); border-color:var(--accent-bright); background:rgba(79,174,130,0.07); }
.research-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line); }
.research-empty{ display:none; text-align:center; color:var(--ink-mute); font-size:14.5px; padding:60px 0; }
.research-card{ background:var(--bg-void); padding:38px 30px; display:flex; flex-direction:column; gap:14px; transition:background .3s; }
.research-card:hover{ background:var(--bg-charcoal); }
.research-card .rc-cat{ font-family:var(--f-display); font-size:11px; letter-spacing:0.1em; text-transform:uppercase; color:var(--accent-signal); }
.research-card .rc-title{ font-size:19px; }
.research-card .rc-status{ margin-top:auto; font-family:var(--f-display); font-size:10.5px; letter-spacing:0.1em; text-transform:uppercase; color:var(--ink-mute); }
@media (max-width:900px){ .research-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:600px){ .research-grid{ grid-template-columns:1fr; } }

/* =========================================================
   HISTORY PAGE
   ========================================================= */
.history-entry{ display:grid; grid-template-columns:180px 1fr; gap:50px; padding:60px 0; border-top:1px solid var(--line); }
.history-entry .h-year{ font-family:var(--f-display); font-size:clamp(34px,4vw,52px); color:var(--ink-faint); }
.history-entry h3{ font-size:24px; margin-bottom:14px; }
.history-entry p{ color:var(--ink-dim); font-size:16px; max-width:640px; }
@media (max-width:700px){ .history-entry{ grid-template-columns:1fr; gap:14px; } }

/* =========================================================
   UTILITY
   ========================================================= */
.text-center{ text-align:center; }
.mt-lg{ margin-top:60px; }
.mt-sm{ margin-top:18px; }
.divider{ height:1px; background:var(--line); width:100%; margin:80px 0; }
.coming-soon{ font-family:var(--f-display); font-size:11px; letter-spacing:0.12em; text-transform:uppercase; color:var(--ink-mute); border:1px dashed var(--line-strong); padding:6px 12px; display:inline-block; }

::selection{ background:var(--accent); color:var(--ink); }

:focus-visible{ outline:1.5px solid var(--accent-signal); outline-offset:3px; }

/* =========================================================
   WHO WE ARE — PILLARS
   ========================================================= */
.pillar-grid{ display:grid; grid-template-columns:repeat(5,1fr); gap:1px; background:var(--line); border:1px solid var(--line); margin-top:10px; }
.pillar-cell{ background:var(--bg-void); padding:40px 26px; display:flex; flex-direction:column; gap:14px; min-height:210px; }
.pillar-cell .p-num{ font-family:var(--f-display); font-size:11px; color:var(--ink-mute); letter-spacing:0.1em; }
.pillar-cell .p-title{ font-family:var(--f-display); font-size:17px; letter-spacing:0.04em; color:var(--accent-signal); margin-top:auto; }
.pillar-cell .p-desc{ font-size:13.5px; color:var(--ink-dim); line-height:1.6; }
@media (max-width:980px){ .pillar-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:560px){ .pillar-grid{ grid-template-columns:1fr; } }

/* =========================================================
   STATUS BADGES
   ========================================================= */
.status-badge{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--f-display); font-size:10.5px; letter-spacing:0.14em; text-transform:uppercase;
  padding:7px 13px; border:1px solid var(--line-strong);
}
.status-badge::before{ content:""; width:6px; height:6px; border-radius:50%; }
.status-badge.status-active{ color:var(--accent-signal); border-color:var(--line-accent); }
.status-badge.status-active::before{ background:var(--accent-signal); box-shadow:0 0 6px 1px rgba(111,217,163,0.5); }
.status-badge.status-developing{ color:#d7b876; border-color:rgba(215,184,118,0.35); }
.status-badge.status-developing::before{ background:#d7b876; }
.status-badge.status-experimental{ color:#8fb3c9; border-color:rgba(143,179,201,0.35); }
.status-badge.status-experimental::before{ background:#8fb3c9; }
.status-badge.status-planned{ color:var(--ink-mute); border-color:var(--line); border-style:dashed; }
.status-badge.status-planned::before{ background:var(--ink-mute); }

/* =========================================================
   ECOSYSTEM CONNECTS — grouped cluster diagram
   ========================================================= */
.connect-hub{ text-align:center; margin-bottom:50px; }
.connect-hub .hub-mark{
  display:inline-flex; align-items:center; gap:12px;
  font-family:var(--f-display); font-size:15px; letter-spacing:0.14em;
  padding:16px 28px; border:1px solid var(--line-accent); color:var(--ink);
}
.connect-hub .hub-mark .dot{ width:7px; height:7px; border-radius:50%; background:var(--accent-signal); box-shadow:0 0 8px 1px var(--accent-signal); }
.connect-clusters{ display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--line); border:1px solid var(--line); }
.connect-cluster{ background:var(--bg-void); padding:36px 28px; display:flex; flex-direction:column; gap:0; }
.connect-cluster .cluster-label{ font-family:var(--f-display); font-size:10.5px; letter-spacing:0.12em; text-transform:uppercase; color:var(--ink-mute); margin-bottom:18px; }
.cluster-chain{ display:flex; flex-direction:column; }
.cluster-chain a{ font-family:var(--f-display); font-size:15px; color:var(--ink); padding:10px 0; border-bottom:1px solid var(--line); transition:color .3s, padding-left .3s; }
.cluster-chain a:hover{ color:var(--accent-signal); padding-left:6px; }
.cluster-chain a:last-child{ border-bottom:none; }
.cluster-chain .chain-arrow{ text-align:center; color:var(--accent-signal); font-size:13px; padding:2px 0; }
.connect-cluster .cluster-back{ margin-top:20px; font-size:11px; color:var(--ink-faint); letter-spacing:0.06em; }
@media (max-width:980px){ .connect-clusters{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:600px){ .connect-clusters{ grid-template-columns:1fr; } }

/* =========================================================
   DEPARTMENTS INDEX PAGE
   ========================================================= */
.deptindex-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--line); border:1px solid var(--line); margin-top:10px; }
.deptindex-card{ background:var(--bg-void); padding:44px 38px; display:flex; flex-direction:column; gap:16px; transition:background .3s; }
.deptindex-card:hover{ background:var(--bg-charcoal); }
.deptindex-top{ display:flex; justify-content:space-between; align-items:flex-start; gap:14px; }
.deptindex-num{ font-family:var(--f-display); font-size:13px; color:var(--ink-mute); letter-spacing:0.08em; }
.deptindex-card h3{ font-size:24px; margin-top:14px; }
.deptindex-cat{ font-family:var(--f-display); font-size:11.5px; letter-spacing:0.1em; text-transform:uppercase; color:var(--accent-signal); margin-top:6px; }
.deptindex-desc{ color:var(--ink-dim); font-size:14.5px; line-height:1.65; }
.deptindex-card .dept-keywords{ margin-top:2px; }
.deptindex-card .btn{ margin-top:auto; align-self:flex-start; }
@media (max-width:900px){ .deptindex-grid{ grid-template-columns:1fr; } }

/* =========================================================
   FORM VALIDATION STATES
   ========================================================= */
.form-field.has-error input,
.form-field.has-error textarea{ border-color:#c2685a; }
.field-error{
  display:none;
  margin-top:8px;
  font-size:12px;
  color:#d98d7e;
  font-family:var(--f-body);
}
.form-field.has-error .field-error{ display:block; }
.form-field label .req{ color:var(--accent-signal); margin-left:3px; }

.btn-solid.is-loading{ opacity:0.7; pointer-events:none; }
.btn-solid .btn-label-default{ display:inline; }
.btn-solid .btn-label-loading{ display:none; }
.btn-solid.is-loading .btn-label-default{ display:none; }
.btn-solid.is-loading .btn-label-loading{ display:inline; }

.form-success{ border-color:var(--line-accent); line-height:1.6; }
.form-error-banner{
  display:none;
  margin-top:26px; padding:18px 20px;
  border:1px solid #c2685a; color:#d98d7e; font-size:14px;
}
.form-error-banner.show{ display:block; }

/* ---------- clickable card accessibility ---------- */
.dept-block, .deptindex-card{ cursor:pointer; }
.dept-block:focus-visible, .deptindex-card:focus-visible{ outline:2px solid var(--accent-signal); outline-offset:5px; }