/* ==========================================================================
   Serucell family shared template
   Single source of truth for serucell.bio · intelligentskinsignaling.com ·
   intelligentcellsignaling.com
   Edit HERE only. Run _template/build.sh to copy into each site's /assets/.
   ========================================================================== */

/* --- Tokens --------------------------------------------------------------- */
:root{
  --dur-fast:180ms; --dur-base:450ms; --dur-slow:650ms; --dur-crawl:900ms;
  --ease-out:cubic-bezier(.25,.46,.45,.94);
  --ease-spring:cubic-bezier(.34,1.56,.64,1);
  --ease-inout:cubic-bezier(.45,0,.55,1);
  --ease-linear:linear;
  --ease-primary:var(--ease-inout);

  --bg:#09090c; --bg-raised:#131210; --bg-card:#1b1916;
  --text-1:#ffffff; --text-2:#ccc5b8; --text-3:#78706a;
  --gold:#b89255; --gold-lift:#c9a97a;
  --gold-dim:rgba(184,146,85,.12);
  --border:rgba(255,255,255,.08); --border-g:rgba(184,146,85,.22);

  --serif:'EB Garamond',Georgia,serif;
  --sans:Inter,system-ui,-apple-system,sans-serif;

  --safe-left:env(safe-area-inset-left,0px);
  --safe-right:env(safe-area-inset-right,0px);
}

@media (prefers-reduced-motion:reduce){
  *,::after,::before{
    animation-duration:0s!important; animation-iteration-count:1!important;
    transition-duration:0s!important; transition-delay:0s!important;
  }
}

/* --- Base ----------------------------------------------------------------- */
*,::after,::before{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;overflow-x:hidden}
body{
  background:var(--bg); color:var(--text-1);
  font-family:var(--sans); font-size:16px; line-height:1.6;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
  -webkit-text-size-adjust:100%;
}
h1,h2{font-family:var(--serif);font-weight:400;line-height:1.15}
h1{font-size:clamp(2.4rem,7vw,5.5rem);letter-spacing:-.01em}
h2{font-size:clamp(1.7rem,5vw,3rem)}
h3{font-family:var(--sans);font-size:.68rem;font-weight:500;letter-spacing:.2em;
   text-transform:uppercase;color:var(--gold)}
p{color:var(--text-2);font-size:1rem;line-height:1.78;max-width:62ch}
.lead{font-size:1.1rem;line-height:1.7;color:var(--text-1);opacity:.82}
a{color:var(--gold);text-decoration:none}
a:hover{text-decoration:underline}
em{font-style:italic}
strong{font-weight:500;color:var(--text-1)}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}

/* --- Layout --------------------------------------------------------------- */
.container{
  max-width:1100px;margin:0 auto;
  padding-left:calc(1.5rem + var(--safe-left));
  padding-right:calc(1.5rem + var(--safe-right));
}
.section{padding:6rem 0;border-top:1px solid var(--border)}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:5rem;align-items:start}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}
.split{display:grid;grid-template-columns:1fr auto;gap:3rem;align-items:center}
.narrow{max-width:58ch}
.stack{margin-top:1.25rem}
.stack-lg{margin-top:1.5rem}

/* --- Motion --------------------------------------------------------------- */
.reveal{
  opacity:0;transform:translateY(20px);
  transition:opacity var(--dur-crawl) var(--ease-primary),
             transform var(--dur-crawl) var(--ease-primary);
}
.reveal.is-visible{opacity:1;transform:translateY(0)}
.stagger-group>*{
  opacity:0;transform:translateX(-12px);
  transition:opacity var(--dur-slow) var(--ease-primary),
             transform var(--dur-slow) var(--ease-primary);
  transition-delay:calc(var(--i) * 90ms);
}
.stagger-group.is-visible>*{opacity:1;transform:translateX(0)}
.line-draw{display:block;height:1px;background:var(--gold);width:0;opacity:.25;
  transition:width var(--dur-crawl) var(--ease-linear)}
.line-draw.is-visible{width:100%}
.fade-in{opacity:0;transition:opacity var(--dur-crawl) var(--ease-primary)}
.fade-in.is-visible{opacity:1}
.hero-eyebrow{transition-delay:0s}
.hero-heading{transition-delay:.2s}
.hero-body{transition-delay:.4s}
.hero-cta{transition-delay:.6s}
@keyframes pulse{0%,100%{opacity:.35}50%{opacity:1}}

/* --- Nav ------------------------------------------------------------------ */
/* .site-head is the fixed layer so an optional .ribbon can sit *under* the nav
   instead of behind it. */
.site-head{position:fixed;top:0;left:0;right:0;z-index:100}
nav{
  position:relative;
  padding:1.25rem 2rem;display:flex;align-items:center;justify-content:space-between;
  gap:1.5rem;
  background:linear-gradient(to bottom,rgba(9,9,12,.97) 0,rgba(9,9,12,0) 100%);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.nav-logo{
  font-family:var(--sans);font-size:.72rem;font-weight:500;letter-spacing:.22em;
  text-transform:uppercase;color:var(--text-1);text-decoration:none;flex:none;
}
.nav-logo:hover{text-decoration:none;color:var(--text-1)}
.nav-links{display:flex;gap:1.75rem;list-style:none;flex-wrap:nowrap}
.nav-links a{
  font-size:.78rem;letter-spacing:.06em;color:var(--text-3);text-decoration:none;
  white-space:nowrap;transition:color var(--dur-fast) var(--ease-out);
}
.nav-links a:hover{color:var(--text-1);text-decoration:none}
.nav-toggle{
  display:none;background:0 0;border:1px solid var(--border);color:var(--text-3);
  padding:.45rem .85rem;font-size:.68rem;font-family:var(--sans);letter-spacing:.12em;
  text-transform:uppercase;cursor:pointer;border-radius:1px;min-height:36px;
}
.nav-close{display:none}

/* Platform ribbon, sits directly under the nav inside .site-head */
.ribbon{
  text-align:center;padding:.5rem 2rem;font-size:.62rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--text-3);
  border-bottom:1px solid var(--border);
  background:rgba(9,9,12,.92);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
/* Pages that carry a ribbon start their hero below it */
.has-ribbon .hero{padding-top:3rem}

/* --- Hero ----------------------------------------------------------------- */
.hero-bg{
  position:fixed;inset:0;z-index:-1;
  background:
    radial-gradient(ellipse 60% 50% at 80% 20%,rgba(184,146,85,.05) 0,transparent 60%),
    radial-gradient(ellipse 40% 40% at 10% 80%,rgba(184,146,85,.03) 0,transparent 60%),
    var(--bg);
}
.hero{
  min-height:100vh;min-height:100svh;
  display:flex;flex-direction:column;justify-content:flex-end;
  padding-bottom:6rem;max-width:1100px;margin:0 auto;
}
.hero.hero-short{min-height:auto;padding-top:9rem}
.eyebrow{
  font-family:var(--sans);font-size:.68rem;font-weight:500;letter-spacing:.24em;
  text-transform:uppercase;color:var(--gold);margin-bottom:1.5rem;
}
.hero h1{margin-bottom:1.75rem;max-width:16ch;color:var(--text-1)}
.hero h1 em{font-style:italic;color:var(--gold)}
.hero-subtext{max-width:54ch;font-size:1.05rem;line-height:1.75;color:var(--text-2);
  margin-bottom:2.5rem}
.hero-note{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--text-3)}

/* --- Section label -------------------------------------------------------- */
.section-label{display:flex;align-items:center;gap:1rem;margin-bottom:3.5rem}
.section-label .sl{
  margin:0;white-space:nowrap;font-family:var(--sans);font-size:.68rem;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;color:var(--gold);
}
.label-line{flex:1;height:1px;background:var(--border);min-width:20px}
.label-num{font-size:.62rem;color:var(--text-3);letter-spacing:.1em;flex:none}

/* --- Text helpers --------------------------------------------------------- */
.kicker{
  display:block;font-family:var(--sans);font-size:.62rem;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;color:var(--gold);margin-bottom:1rem;
}
.kicker--muted{color:var(--text-3)}
.kicker--boxed{
  display:inline-block;border:1px solid var(--border-g);padding:.2rem .6rem;
  border-radius:1px;margin-bottom:.85rem;
}
.micro{font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--text-3)}
.card-title{
  font-family:var(--serif);font-size:1.35rem;font-weight:400;color:var(--text-1);
  margin-bottom:.75rem;letter-spacing:normal;text-transform:none;line-height:1.25;
}
.card-title.lg{font-size:1.8rem;margin-bottom:1.25rem}
.card-body{font-size:.88rem;color:var(--text-2);line-height:1.7;max-width:100%}
.card-body+.card-body{margin-top:1rem}
.fine{font-size:.78rem;color:var(--text-3);line-height:1.6;max-width:100%}
.quote{
  font-family:var(--serif);font-size:clamp(1.4rem,3vw,2.2rem);font-weight:400;
  line-height:1.3;color:var(--text-1);max-width:44ch;margin-bottom:1.5rem;
}
.quote em{color:var(--gold);font-style:italic}
.quote-sub{font-size:.8rem;color:var(--text-3);line-height:1.7;max-width:64ch}

/* --- Surfaces ------------------------------------------------------------- */
.card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:2px;
  padding:2.5rem;position:relative;
}
.card--rule::before{
  content:'';position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(to right,var(--gold),transparent);
}
.card--raised{background:var(--bg-raised)}
.card--top{border-top:2px solid var(--gold)}
.card+.card{margin-top:1.5rem}

/* Emphasis panel: leader blocks, paradigm blocks */
.panel{
  background:linear-gradient(135deg,var(--bg-card) 0,rgba(184,146,85,.05) 100%);
  border:1px solid var(--border-g);border-radius:2px;padding:3rem 2.5rem;
  position:relative;overflow:hidden;
}
.panel::before{
  content:'';position:absolute;top:-2px;left:0;right:0;height:2px;
  background:linear-gradient(to right,transparent,var(--gold) 50%,transparent);
}
.panel+.panel{margin-top:1.5rem}

/* Small reference / disclaimer box */
.note{
  background:var(--bg-raised);border:1px solid var(--border);border-radius:2px;
  padding:1.5rem 1.75rem;font-size:.78rem;color:var(--text-3);line-height:1.7;
  margin-top:1.5rem;
}
.note--dashed{border-style:dashed;max-width:820px;margin-top:3rem;padding:1.6rem 1.85rem}
.note strong{color:var(--text-2);font-weight:500}

/* Gold-tinted callout */
.callout{
  background:var(--gold-dim);border:1px solid var(--border-g);border-radius:2px;
  padding:1.25rem 1.5rem;font-size:.85rem;color:var(--text-2);line-height:1.65;
  margin-top:1.5rem;
}
.callout em{font-style:italic;color:var(--gold)}

/* --- Tiles (hairline-separated grid / stack) ------------------------------ */
.tile-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--border);
  border:1px solid var(--border);margin-top:3rem;
}
.tile-stack{
  display:flex;flex-direction:column;gap:1px;background:var(--border);margin-top:2rem;
}
.tile{
  background:var(--bg);padding:2rem 2.25rem;
  border-left:2px solid transparent;
  transition:border-color var(--dur-fast) var(--ease-out);
}
.tile-stack .tile{padding:1.75rem 2rem}
.tile-stack .tile:hover{border-left-color:var(--gold)}
.tile--is{border-left-color:var(--gold)}
.tile--muted{opacity:.6}
.tile--muted .kicker{color:var(--text-3)}
.tile .card-title{font-size:1.25rem}
.tile-link{
  display:inline-block;font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--gold);margin-top:.75rem;text-decoration:none;
}
.tile-link:hover{text-decoration:underline}

/* --- Link cards ----------------------------------------------------------- */
.card-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin-top:3rem}
.linkcard{
  background:var(--bg-card);border:1px solid var(--border);border-radius:2px;
  padding:2.5rem;text-decoration:none;display:block;position:relative;overflow:hidden;
  transition:border-color var(--dur-base) var(--ease-out);
}
.linkcard::after{
  content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse 80% 60% at 50% 100%,var(--gold-dim),transparent);
  opacity:0;transition:opacity var(--dur-base) var(--ease-out);pointer-events:none;
}
.linkcard:hover{border-color:var(--border-g);text-decoration:none}
.linkcard:hover::after{opacity:1}
.linkcard-num{
  font-family:var(--serif);font-size:3.5rem;color:rgba(184,146,85,.18);line-height:1;
  margin-bottom:1.25rem;
}
.linkcard-url{
  display:block;font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--text-3);margin-top:1.5rem;
}

/* --- Stats ---------------------------------------------------------------- */
.stat{
  background:var(--bg-card);border:1px solid var(--border);border-radius:2px;
  padding:2rem;position:relative;
}
.stat::after{content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:var(--gold);opacity:.4}
.stat-num{
  font-family:var(--serif);font-size:3.5rem;font-weight:400;color:var(--text-1);
  line-height:1;margin-bottom:.15rem;
}
.stat-num.md{font-size:2.5rem;color:var(--gold)}
.stat-num.sm{font-size:2rem}
.stat-unit{font-size:1rem;color:var(--gold)}
.stat-label{font-size:.85rem;color:var(--text-2);line-height:1.5;margin-top:.75rem;max-width:100%}
.stat-sub{font-size:.72rem;color:var(--text-3);line-height:1.5;margin-top:.35rem;max-width:100%}
.stat-source{font-size:.65rem;color:var(--text-3);margin-top:1rem;letter-spacing:.04em;max-width:100%}

/* Bare figure strip inside a card (no card chrome on each item) */
.stat-strip{
  background:var(--bg-raised);border:1px solid var(--border);border-radius:2px;
  padding:2rem;display:grid;grid-template-columns:repeat(3,1fr);
  gap:1.25rem;align-items:start;
}
.stat-strip .stat{background:0 0;border:0;padding:0}
.stat-strip .stat::after{display:none}
.stat-strip .stat-num{font-size:1.4rem}
.stat-strip .stat--hl{border:1px solid var(--border-g);padding:1rem;border-radius:1px}
.stat-strip .stat--hl .stat-num,.stat-strip .stat--hl .kicker{color:var(--gold)}

/* Wide row: prose left, figure right */
.stat-row{
  background:var(--bg-raised);border:1px solid var(--border);border-radius:2px;
  padding:2.5rem 3rem;display:flex;gap:3rem;align-items:center;flex-wrap:wrap;
}
.stat-row-text{flex:1;min-width:200px}
.stat-row-num{flex:none;text-align:center}

/* --- Fact strip ----------------------------------------------------------- */
.facts{
  display:flex;gap:2rem;flex-wrap:wrap;margin-top:2rem;padding-top:2rem;
  border-top:1px solid var(--border);
}
.fact{display:flex;flex-direction:column;gap:.3rem}
.fact-k{font-size:.75rem;color:var(--text-3);letter-spacing:.04em}
.fact-v{font-family:var(--serif);font-size:1.05rem;color:var(--text-2)}

/* --- Axis diagram (two populations in dialogue) --------------------------- */
.axis-diagram{
  background:var(--bg-card);border:1px solid var(--border);border-radius:2px;
  padding:2.5rem 2rem;position:relative;overflow:hidden;
}
.axis-diagram::before{
  content:'';position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse 60% 60% at 50% 50%,var(--gold-dim),transparent);
}
.axis-diagram>*{position:relative}
.axis-row{display:flex;align-items:stretch;gap:1.25rem;margin:1.5rem 0 .35rem}
.axis-node{
  flex:1;padding:1.25rem 1rem;border:1px solid var(--border-g);border-radius:2px;
  text-align:center;display:flex;flex-direction:column;justify-content:center;
}
.axis-node-name{font-size:.65rem;letter-spacing:.18em;text-transform:uppercase;
  color:var(--gold);margin-bottom:.4rem}
.axis-node-role{font-size:.78rem;color:var(--text-2);line-height:1.5;max-width:100%}
.axis-swap{
  flex:none;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:.3rem;color:var(--gold);
}
.axis-swap-line{
  width:40px;height:1px;
  background:linear-gradient(to right,var(--gold),rgba(184,146,85,0));
  animation:pulse 2s ease-in-out infinite;
}
.axis-swap-line.reverse{
  background:linear-gradient(to left,var(--gold),rgba(184,146,85,0));
  animation-delay:1s;
}
.axis-swap-label{font-size:.55rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--text-3)}
.axis-caption{font-size:.65rem;color:var(--text-3);letter-spacing:.08em;
  text-align:center;margin-bottom:1.5rem}
.axis-foot{border-top:1px solid var(--border);padding-top:1.5rem;margin-top:1.5rem}

/* --- Concept list --------------------------------------------------------- */
.concept{padding:2rem 0;border-top:1px solid var(--border)}
.concept:last-child{border-bottom:1px solid var(--border)}
.concept-title{font-family:var(--serif);font-size:1.5rem;font-weight:400;
  color:var(--text-1);margin-bottom:.75rem;line-height:1.25}
.concept ul{margin-top:.75rem;padding-left:1.25rem;color:var(--text-2);
  font-size:.9rem;line-height:1.8}
.concept--warn .kicker--boxed{
  background:rgba(255,80,80,.08);border-color:rgba(255,80,80,.25);color:#ff8080;
}
.concept--warn ul{color:var(--text-3)}

/* --- Tags ----------------------------------------------------------------- */
.tag-row{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.75rem}
.tag{font-size:.65rem;letter-spacing:.08em;color:var(--text-3);
  border:1px solid var(--border);padding:.3rem .65rem;border-radius:2px}
.tag--gold{color:var(--gold);background:var(--gold-dim);border-color:var(--border-g);
  font-size:.7rem;letter-spacing:.06em;padding:.35rem .8rem}
.badge{
  display:inline-block;font-size:.65rem;font-weight:500;letter-spacing:.18em;
  text-transform:uppercase;color:var(--gold);background:var(--gold-dim);
  border:1px solid var(--border-g);padding:.3rem .75rem;border-radius:2px;
  margin-bottom:.65rem;
}

/* --- Comparison table ----------------------------------------------------- */
.table-scroll{
  overflow-x:auto;-webkit-overflow-scrolling:touch;margin-top:2rem;
  border:1px solid var(--border);border-radius:2px;
}
.compare-table{width:100%;min-width:320px;border-collapse:collapse}
.compare-table th{
  font-size:.65rem;letter-spacing:.14em;text-transform:uppercase;color:var(--text-3);
  text-align:left;padding:1rem 1.25rem;border-bottom:1px solid var(--border);
  font-weight:400;white-space:nowrap;background:var(--bg-card);
}
.compare-table th.hl{color:var(--gold)}
.compare-table td{
  padding:.9rem 1.25rem;font-size:.88rem;color:var(--text-2);
  border-bottom:1px solid var(--border);vertical-align:top;line-height:1.5;
}
.compare-table td:first-child{color:var(--text-1);font-weight:500}
.compare-table td.hl{color:var(--gold)}
.compare-table tr:last-child td{border-bottom:none}

/* --- Bibliography --------------------------------------------------------- */
.bib-list{display:flex;flex-direction:column;margin-top:2rem}
.bib-item{
  display:grid;grid-template-columns:2.5rem 1fr;gap:1rem;padding:1.35rem 0;
  border-bottom:1px solid var(--border);align-items:start;
}
.bib-item:last-child{border-bottom:none}
.bib-num{font-family:var(--sans);font-weight:500;font-size:.68rem;color:var(--gold);
  letter-spacing:.12em;padding-top:.15rem}
.bib-title{font-size:.9rem;color:var(--text-1);line-height:1.55;margin-bottom:.3rem;
  max-width:100%}
.bib-meta{font-size:.78rem;color:var(--text-3);line-height:1.5;max-width:100%}

/* --- Buttons -------------------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  font-family:var(--sans);font-size:.75rem;font-weight:500;letter-spacing:.14em;
  text-transform:uppercase;color:var(--bg);background:var(--gold);
  padding:.9rem 2.25rem;min-height:48px;border:1px solid var(--gold);border-radius:1px;
  text-decoration:none;white-space:nowrap;cursor:pointer;text-align:center;
  transition:transform var(--dur-fast) var(--ease-spring),
             background var(--dur-fast) var(--ease-out),
             color var(--dur-fast) var(--ease-out);
}
.btn:hover{transform:translateY(-2px) scale(1.02);background:var(--gold-lift);
  border-color:var(--gold-lift);text-decoration:none;color:var(--bg)}
.btn:active{transform:scale(.97)}
.btn--ghost{background:0 0;color:var(--gold);border-color:var(--border-g)}
.btn--ghost:hover{background:var(--gold-dim);color:var(--gold);border-color:var(--gold)}
.btn-row{display:flex;gap:1rem;flex-wrap:wrap;justify-content:center}

/* --- Contact / inquiry block ---------------------------------------------- */
.contact-list{display:flex;flex-direction:column;gap:.4rem;margin-top:1.5rem}
.contact-list span{
  font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--text-3);
  display:flex;align-items:center;gap:.6rem;
}
.contact-list span::before{content:'—';color:var(--gold)}

/* --- Forms ---------------------------------------------------------------- */
.iform{display:flex;flex-direction:column;gap:1.1rem;max-width:540px;margin-top:2.5rem}
.iform .fld{display:flex;flex-direction:column;gap:.4rem}
.iform label{font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;color:var(--text-3)}
.iform input,.iform select{
  background:var(--bg-card);border:1px solid var(--border);color:var(--text-1);
  padding:.9rem 1rem;font-family:var(--sans);font-size:.95rem;border-radius:2px;width:100%;
}
.iform input::placeholder{color:var(--text-3)}
.iform input:focus,.iform select:focus{outline:none;border-color:var(--border-g)}
.checkrow{display:flex;gap:.65rem;align-items:flex-start;font-size:.82rem;
  color:var(--text-2);line-height:1.55}
.checkrow input{width:auto;margin-top:.25rem;flex:none}
.honeypot{position:absolute;left:-9999px}

/* --- Footer --------------------------------------------------------------- */
footer{
  border-top:1px solid var(--border);padding:4rem 0 3rem;
  padding-bottom:calc(3rem + env(safe-area-inset-bottom,0px));
}
.footer-inner{display:flex;flex-direction:column;align-items:center;text-align:center;
  gap:1.5rem}
.footer-name{font-size:.65rem;letter-spacing:.24em;text-transform:uppercase;
  color:var(--text-3)}
.footer-heading{font-family:var(--serif);font-size:2rem;font-weight:400;color:var(--text-1)}
.footer-body{font-size:.9rem;color:var(--text-2);max-width:52ch;line-height:1.7}
.footer-links{display:flex;gap:2rem;flex-wrap:wrap;justify-content:center}
.footer-links a{
  font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--text-3);
  text-decoration:none;transition:color var(--dur-fast) var(--ease-out);
}
.footer-links a:hover{color:var(--gold);text-decoration:none}
.footer-legal{
  font-size:.72rem;color:var(--text-3);max-width:62ch;line-height:1.6;margin-top:1.5rem;
  border-top:1px solid var(--border);padding-top:1.75rem;
}

/* --- Responsive ----------------------------------------------------------- */
@media (max-width:1080px){
  .nav-links{gap:1.25rem}
  .nav-links a{font-size:.72rem}
}
@media (max-width:900px){
  nav{padding:1rem 1.5rem}
  .nav-toggle{display:flex;align-items:center}
  .nav-links{
    display:none;position:fixed;top:0;left:0;right:0;
    background:rgba(9,9,12,.98);
    backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    padding:5rem 1.5rem 2rem;flex-direction:column;gap:1.75rem;
    border-bottom:1px solid var(--border);z-index:99;max-height:100svh;overflow-y:auto;
  }
  .nav-links.is-open{display:flex}
  .nav-links a{font-size:1rem;color:var(--text-1);padding:.5rem 0;white-space:normal}
  .nav-close{
    display:block;position:absolute;top:1rem;right:1.25rem;background:0 0;border:none;
    color:var(--text-2);font-size:1.3rem;cursor:pointer;padding:.5rem;
  }
}
@media (max-width:760px){
  .container{padding-left:1.25rem;padding-right:1.25rem}
  .section{padding:4rem 0}
  h1{font-size:clamp(2rem,9vw,2.8rem)}
  h2{font-size:clamp(1.6rem,6vw,2rem)}
  p{max-width:100%}
  .grid-2,.grid-3,.card-grid,.split{grid-template-columns:1fr;gap:2rem}
  .tile-grid{grid-template-columns:1fr}
  .hero{padding-bottom:5rem}
  .hero h1{max-width:100%}
  .card,.linkcard{padding:2rem 1.5rem}
  .panel{padding:2rem 1.5rem}
  .axis-diagram{padding:1.75rem 1.25rem}
  .axis-row{flex-direction:column;gap:.75rem;align-items:stretch}
  .axis-swap{flex-direction:row;padding:.25rem 0}
  .axis-swap-line{width:30px}
  .ribbon{padding:.45rem 1rem;font-size:.56rem;letter-spacing:.1em}
  .stat-strip{padding:1.5rem;grid-template-columns:1fr 1fr}
  .stat-row{padding:2rem 1.5rem;gap:2rem;flex-direction:column;align-items:flex-start}
  .stat-row-num{align-self:center}
  .stat-num{font-size:2.8rem}
  .facts{gap:1.25rem}
  .quote{font-size:1.4rem;max-width:100%}
  .footer-heading{font-size:1.5rem}
}
@media (max-width:420px){
  h1{font-size:1.9rem}
  h2{font-size:1.55rem}
  .stat-strip{grid-template-columns:1fr}
}