:root{
  --bg:#0c1412;
  --bg-alt:#101a17;
  --surface:#152220;
  --surface-line:rgba(236,243,239,0.10);
  --ink:#ecf3ef;
  --muted:#93a9a0;
  --muted-dim:#5f7169;
  --cobalt:#5b82ff;
  --cobalt-dim:#3d5bcf;
  --rust:#e2793f;
  --font-display:'Space Grotesk', sans-serif;
  --font-body:'Source Serif 4', Georgia, serif;
  --font-mono:'IBM Plex Mono', monospace;
  --wrap:1180px;
  --wrap-narrow:820px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important;}
}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

a{color:inherit;}
img{max-width:100%; display:block;}

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

::selection{background:var(--cobalt-dim); color:#fff;}

a:focus-visible, button:focus-visible{
  outline:2px solid var(--cobalt);
  outline-offset:3px;
  border-radius:2px;
}

/* ---------- background field-line texture ---------- */
.field-bg{
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  overflow:hidden;
}
.field-bg svg{width:100%; height:100%; display:block;}

.helix{
  animation:helix-drift 22s linear infinite;
  animation-delay:var(--helix-delay, 0s);
  will-change:transform;
}
@keyframes helix-drift{
  from{transform:translateY(0);}
  to{transform:translateY(-140px);} /* one wavelength: loops seamlessly */
}

.helix-core path{
  fill:none;
  stroke-width:1.4;
  stroke-linecap:round;
}
.helix-rungs line{
  stroke-width:1;
  opacity:0.5;
}
.helix-glow path{
  fill:none;
  stroke-width:3.5;
  filter:url(#dna-glow);
  animation:helix-glow-pulse 5s ease-in-out infinite alternate;
  animation-delay:var(--helix-delay, 0s);
}

.helix-cobalt .helix-core path{stroke:var(--cobalt); opacity:0.55;}
.helix-cobalt .helix-rungs line{stroke:var(--cobalt);}
.helix-cobalt .helix-glow path{stroke:var(--cobalt);}

.helix-rust .helix-core path{stroke:var(--rust); opacity:0.5;}
.helix-rust .helix-rungs line{stroke:var(--rust);}
.helix-rust .helix-glow path{stroke:var(--rust);}

@keyframes helix-glow-pulse{
  from{opacity:0.25;}
  to{opacity:0.65;}
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:40;
  background:rgba(12,20,18,0.82);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--surface-line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:16px;
  padding-bottom:16px;
}
.wordmark{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  font-family:var(--font-mono);
  letter-spacing:0.02em;
}
.wordmark img{height:26px; width:auto;}
.primary-nav{
  display:flex;
  flex-wrap:wrap;
  justify-content:flex-end;
  gap:2px;
}
.primary-nav a{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:0.06em;
  text-transform:uppercase;
  text-decoration:none;
  color:var(--muted);
  padding:9px 14px;
  border-radius:3px;
  transition:color 0.15s ease, background 0.15s ease;
}
.primary-nav a:hover{color:var(--ink); background:var(--surface);}
.primary-nav a.active{color:var(--ink);}

.nav-toggle{
  display:none;
  background:none;
  border:1px solid var(--surface-line);
  border-radius:4px;
  width:38px;
  height:38px;
  color:var(--ink);
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.nav-toggle svg{width:18px; height:18px;}

@media (max-width: 760px){
  .primary-nav{
    display:none;
    position:absolute;
    top:100%;
    left:0;
    right:0;
    flex-direction:column;
    background:var(--bg-alt);
    border-bottom:1px solid var(--surface-line);
    padding:8px 28px 18px;
    gap:2px;
  }
  .primary-nav.open{display:flex;}
  .primary-nav a{padding:12px 4px; border-bottom:1px solid var(--surface-line); border-radius:0;}
  .nav-toggle{
    display:flex;
    position:fixed;
    top:10px;
    left:50%;
    transform:translateX(-50%);
    z-index:41;
  }
}

/* ---------- hero (home) ---------- */
.hero{
  position:relative;
  z-index:1;
  padding:96px 0 84px;
  border-bottom:1px solid var(--surface-line);
}
.eyebrow{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--cobalt);
  margin:0 0 22px;
  display:flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{
  content:"";
  width:22px;
  height:1px;
  background:var(--cobalt);
  display:inline-block;
}
.hero h1{
  font-family:var(--font-display);
  font-weight:600;
  font-size:clamp(2.1rem, 4.6vw, 3.6rem);
  line-height:1.08;
  letter-spacing:-0.01em;
  margin:0 0 26px;
  max-width:16ch;
}
.hero-sub{
  font-size:1.13rem;
  color:var(--muted);
  max-width:56ch;
  margin:0 0 40px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.btn{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:0.06em;
  text-transform:uppercase;
  text-decoration:none;
  padding:13px 22px;
  border-radius:3px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  transition:transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
  border:1px solid transparent;
  cursor:pointer;
  font-weight:500;
}
.btn-primary{background:var(--cobalt); color:#0a1210;}
.btn-primary:hover{background:#7695ff; transform:translateY(-1px);}
.btn-ghost{border-color:var(--surface-line); color:var(--ink); background:none;}
.btn-ghost:hover{border-color:var(--cobalt); transform:translateY(-1px);}

/* ---------- page hero (sub-pages) ---------- */
.page-hero{
  position:relative;
  z-index:1;
  padding:64px 0 46px;
  border-bottom:1px solid var(--surface-line);
}
.page-hero h1{
  font-family:var(--font-display);
  font-weight:600;
  font-size:clamp(1.9rem, 3.6vw, 2.7rem);
  line-height:1.12;
  letter-spacing:-0.01em;
  margin:0 0 16px;
  max-width:22ch;
}
.page-hero p{
  color:var(--muted);
  max-width:62ch;
  margin:0;
  font-size:1.05rem;
}

/* ---------- section shell ---------- */
section{position:relative; z-index:1;}
.section-inner{padding:72px 0;}
.section-inner-tight{padding:56px 0;}
.section-head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:20px;
  margin-bottom:40px;
  border-bottom:1px solid var(--surface-line);
  padding-bottom:22px;
}
.section-head h2{
  font-family:var(--font-display);
  font-weight:600;
  font-size:1.5rem;
  margin:0;
  letter-spacing:-0.01em;
}
.section-head .eyebrow{margin:0;}
.section-link{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:0.04em;
  text-decoration:none;
  color:var(--muted);
  white-space:nowrap;
  transition:color 0.15s ease;
}
.section-link:hover{color:var(--cobalt);}
.bordered{border-bottom:1px solid var(--surface-line);}

/* ---------- platform grid (home) ---------- */
.platform-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:1px;
  background:var(--surface-line);
  border:1px solid var(--surface-line);
}
.platform-card{
  background:var(--bg);
  padding:32px 28px 36px;
}
.platform-card .tag{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:0.1em;
  text-transform:uppercase;
  color:var(--rust);
  display:block;
  margin-bottom:16px;
}
.platform-card h3{
  font-family:var(--font-display);
  font-size:1.15rem;
  font-weight:600;
  margin:0 0 12px;
}
.platform-card p{
  color:var(--muted);
  font-size:0.98rem;
  margin:0;
}
@media (max-width: 760px){
  .platform-grid{grid-template-columns:1fr;}
}

/* ---------- doc / citation list (research, patronage docs) ---------- */
.cite-list{list-style:none; margin:0; padding:0;}
.cite-item{
  border-top:1px solid var(--surface-line);
  padding:24px 0;
  display:grid;
  grid-template-columns:100px 1fr auto;
  gap:24px;
  align-items:start;
  text-decoration:none;
  color:inherit;
  transition:background 0.15s ease;
}
.cite-item:last-child{border-bottom:1px solid var(--surface-line);}
.cite-item:hover{background:var(--surface);}
.cite-item:hover .cite-title{color:var(--cobalt);}
.cite-kind{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--muted-dim);
  padding-top:3px;
}
.cite-title{
  font-family:var(--font-body);
  font-size:1.02rem;
  line-height:1.45;
  transition:color 0.15s ease;
}
.cite-meta{
  font-family:var(--font-body);
  font-size:0.92rem;
  color:var(--muted);
  margin-top:6px;
  line-height:1.5;
}
.cite-action{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--cobalt);
  white-space:nowrap;
  padding-top:3px;
}
@media (max-width: 640px){
  .cite-item{grid-template-columns:1fr; gap:4px;}
  .cite-action{
    display:block;
    color:var(--cobalt);
    margin-top:2px;
  }
}

/* ---------- video block (news & media) ---------- */
.video-wrap{
  border:1px solid var(--surface-line);
  border-radius:4px;
  overflow:hidden;
  background:#000;
}
.video-wrap video{
  width:100%;
  display:block;
  max-height:70vh;
}
.video-caption{
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--muted);
  margin:14px 0 0;
  letter-spacing:0.02em;
}

/* ---------- news list ---------- */
.news-list{list-style:none; margin:0; padding:0;}
.news-item{
  border-top:1px solid var(--surface-line);
  padding:22px 0;
  display:flex;
  justify-content:space-between;
  gap:20px;
  align-items:baseline;
  text-decoration:none;
  color:inherit;
  transition:background 0.15s ease;
}
.news-item:last-child{border-bottom:1px solid var(--surface-line);}
.news-item:hover{background:var(--surface);}
.news-item:hover .news-title{color:var(--cobalt);}
.news-title{font-size:1.02rem; transition:color 0.15s ease;}
.news-date{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--cobalt);
  white-space:nowrap;
}

/* ---------- closing band (home) ---------- */
.band{
  border-bottom:1px solid var(--surface-line);
  background:var(--bg-alt);
}
.band-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:1px;
  background:var(--surface-line);
  border:1px solid var(--surface-line);
}
.band-card{
  background:var(--bg-alt);
  padding:30px 28px;
  text-decoration:none;
  color:inherit;
  transition:background 0.15s ease;
}
.band-card:hover{background:var(--surface);}
.band-card .tag{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:0.1em;
  text-transform:uppercase;
  color:var(--cobalt);
  display:block;
  margin-bottom:10px;
}
.band-card h3{
  font-family:var(--font-display);
  font-size:1.05rem;
  margin:0 0 8px;
}
.band-card p{color:var(--muted); font-size:0.95rem; margin:0;}
.band-action{
  display:block;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--cobalt);
  margin-top:14px;
}
@media (max-width: 640px){
  .band-grid{grid-template-columns:1fr;}
}

/* ---------- prose block (patronage intro, restricted notice) ---------- */
.prose{
  font-size:1.05rem;
  color:var(--ink);
  max-width:70ch;
}
.prose p{margin:0 0 18px;}
.prose p:last-child{margin-bottom:0;}

/* ---------- photo grid ---------- */
.photo-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
}
.photo-grid figure{
  margin:0;
  border:1px solid var(--surface-line);
  overflow:hidden;
  border-radius:2px;
}
.photo-grid img{width:100%; height:100%; object-fit:cover;}
@media (max-width: 640px){
  .photo-grid{grid-template-columns:1fr;}
}

/* ---------- restricted / gated card ---------- */
.gate-card{
  border:1px solid var(--surface-line);
  background:var(--surface);
  border-radius:4px;
  padding:44px 36px;
  text-align:left;
  max-width:520px;
}
.gate-card .lock-icon{
  width:34px;
  height:34px;
  color:var(--cobalt);
  margin-bottom:22px;
}
.gate-card h2{
  font-family:var(--font-display);
  font-size:1.35rem;
  margin:0 0 14px;
}
.gate-card p{
  color:var(--muted);
  margin:0 0 26px;
  font-size:0.98rem;
}
.gate-form{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.gate-form label{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--muted-dim);
}
.gate-form input{
  background:var(--bg);
  border:1px solid var(--surface-line);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:0.98rem;
  padding:11px 12px;
  border-radius:3px;
  margin-bottom:12px;
}
.gate-form input:focus-visible{outline:2px solid var(--cobalt); outline-offset:2px;}

/* ---------- footer ---------- */
footer{padding:40px 0 56px; position:relative; z-index:1;}
.footer-inner{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:16px;
}
.footer-word{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:0.04em;
  color:var(--muted);
}
.footer-nav{
  display:flex;
  gap:18px;
  flex-wrap:wrap;
}
.footer-nav a{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:0.04em;
  text-decoration:none;
  color:var(--muted-dim);
  transition:color 0.15s ease;
}
.footer-nav a:hover{color:var(--ink);}