/* ————— Modern archival: Synonym, thirds grid, color-flood ————— */
@font-face{
  font-family:'Synonym';
  src:url('/fonts/Synonym-Variable.ttf') format('truetype');
  font-weight:100 700;font-display:swap;
}
:root{
  --bone:#e4decc; --bone-2:#dcd5bf; --ink:#1b1813; --ink-soft:#57503f;
  --accent:#c05b33; --dark:#211d16; --dark-2:#2b2620;
  --line:rgba(27,24,19,.16); --line-inv:rgba(228,222,204,.18);
  --bg:var(--bone); --card:var(--bone); --third:33.333%;
  --ease:cubic-bezier(.22,1,.36,1);
}
html.flooded{--bg:var(--accent); --card:var(--accent); --line:rgba(27,24,19,.22)}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth}
body{
  font-family:'Synonym',Helvetica,Arial,sans-serif;color:var(--ink);
  background:var(--bg);line-height:1.55;font-size:1rem;
  -webkit-font-smoothing:antialiased;
  transition:background-color .5s var(--ease);
}
h1,h2,h3{font-weight:600;line-height:1.02;letter-spacing:-.02em}
a{color:inherit}
.hidden{display:none}

/* Full-height third lines (blend flips them on dark bands) */
.lines{position:fixed;inset:0;pointer-events:none;z-index:40;mix-blend-mode:difference;
  background:
    linear-gradient(90deg,rgba(235,230,215,.14) 1px,transparent 1px) no-repeat left var(--third) top/1px 100%,
    linear-gradient(90deg,rgba(235,230,215,.14) 1px,transparent 1px) no-repeat left 66.666% top/1px 100%;
}

/* Color-flood cue: sits on the 2/3 line */
.accent-cue{position:fixed;left:66.666%;top:62vh;transform:translateX(-50%);z-index:60;
  width:18px;height:18px;border:0;padding:0;background:var(--accent);cursor:pointer;
  transition:background-color .5s var(--ease),transform .25s var(--ease)}
.accent-cue:hover{transform:translateX(-50%) scale(1.15)}
html.flooded .accent-cue{background:var(--bone)}
.accent-cue:focus-visible{outline:2px solid var(--ink);outline-offset:3px}

/* Header */
.site-header{
  display:flex;justify-content:space-between;align-items:center;gap:2rem;
  padding:1.1rem clamp(1.25rem,3vw,2.5rem);border-bottom:1px solid var(--line);
  position:sticky;top:0;background:var(--bg);z-index:50;
  transition:background-color .5s var(--ease);
}
.wordmark{font-size:1.15rem;font-weight:600;letter-spacing:-.02em;text-decoration:none;display:flex;flex-direction:column;line-height:1.2}
.wordmark-sub{font-size:.58rem;font-weight:500;letter-spacing:.28em;text-transform:uppercase;color:var(--accent);transition:color .5s var(--ease)}
html.flooded .wordmark-sub{color:var(--ink)}
.site-nav{display:flex;gap:2rem;align-items:center;
  font-size:.72rem;font-weight:500;letter-spacing:.22em;text-transform:uppercase}
.site-nav a{text-decoration:none;color:var(--ink-soft)}
html.flooded .site-nav a{color:var(--ink)}
.site-nav a:hover{color:var(--ink)}
.nav-cta{border:1px solid var(--ink);padding:.55rem 1.1rem;color:var(--ink)!important;transition:.2s}
.nav-cta:hover{background:var(--ink);color:var(--bone)!important}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:.5rem}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--ink);margin:5px 0}

/* Thirds grid primitive */
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr}

/* Hero — headline anchored low-left across two thirds, meta on right third */
.hero{min-height:calc(100vh - 4.5rem);align-content:end;padding-bottom:3.5rem}
.eyebrow{font-size:.68rem;font-weight:500;letter-spacing:.28em;text-transform:uppercase;color:var(--accent);transition:color .5s var(--ease)}
html.flooded .eyebrow{color:var(--ink)}
.hero .eyebrow{grid-column:1/-1;padding:2.5rem clamp(1.25rem,3vw,2.5rem) 0}
.hero h1{grid-column:1/3;align-self:end;padding:2rem clamp(1.25rem,3vw,2.5rem);
  font-size:clamp(3rem,7.5vw,7rem);font-weight:700;text-transform:uppercase;letter-spacing:-.03em;line-height:.94}
.hero h1 em{font-style:normal;color:var(--accent);transition:color .5s var(--ease)}
html.flooded .hero h1 em{color:var(--bone)}
.hero-side{grid-column:3;align-self:end;padding:2rem clamp(1.25rem,3vw,2.5rem)}
.lede{color:var(--ink-soft);font-size:1.05rem;max-width:34rem}
html.flooded .lede{color:var(--ink)}
.hero-actions{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:1.8rem}
.btn{font-size:.72rem;font-weight:500;letter-spacing:.18em;text-transform:uppercase;text-decoration:none;
  padding:.85rem 1.5rem;border:1px solid var(--ink);transition:.2s;cursor:pointer;font-family:inherit;background:none;color:var(--ink)}
.btn-solid{background:var(--ink);color:var(--bone)}
.btn-solid:hover{background:var(--accent);border-color:var(--accent);color:var(--bone)}
html.flooded .btn-solid:hover{background:var(--dark);border-color:var(--dark)}
.btn-ghost:hover{background:var(--ink);color:var(--bone)}
.btn-solid-invert{background:var(--bone);color:var(--ink);border-color:var(--bone)}
.btn-solid-invert:hover{background:var(--accent);color:var(--bone);border-color:var(--accent)}
.btn-ghost-invert{color:var(--bone);border-color:var(--line-inv)}
.btn-ghost-invert:hover{border-color:var(--bone)}

/* Ticker strip */
.strip{display:flex;gap:1.5rem;justify-content:center;flex-wrap:wrap;padding:1rem;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  font-size:.68rem;font-weight:500;letter-spacing:.24em;text-transform:uppercase;color:var(--ink-soft)}
html.flooded .strip{color:var(--ink)}
.strip i{color:var(--accent);font-style:normal}
html.flooded .strip i{color:var(--ink)}

/* Split sections: label third + content two-thirds */
.section{padding:clamp(3.5rem,7vw,6rem) 0}
.split{display:grid;grid-template-columns:var(--third) 1fr}
.split>aside{padding:0 clamp(1.25rem,3vw,2.5rem)}
.split>aside h2{font-size:clamp(1.8rem,3.4vw,2.6rem);margin-top:1rem;text-transform:uppercase;letter-spacing:-.02em}
.split>aside .lede{margin-top:1rem}
.split-body{padding:0 clamp(1.25rem,3vw,2.5rem)}

.cards{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line)}
.service{background:var(--card);padding:1.8rem 1.5rem;transition:background-color .5s var(--ease)}
.service:hover{background:var(--bone-2)}
html.flooded .service:hover{background:var(--accent)}
.cat-no{font-size:.62rem;font-weight:500;letter-spacing:.26em;color:var(--accent);display:block;margin-bottom:.9rem;transition:color .5s var(--ease)}
html.flooded .cat-no{color:var(--ink)}
.service h3{font-size:1.2rem;margin-bottom:.6rem}
.service p{font-size:.9rem;color:var(--ink-soft)}
html.flooded .service p{color:var(--ink)}

/* Dark case-study band */
.section-dark{background:var(--dark);color:var(--bone)}
.section-dark .section-head{grid-column:1/-1;padding:0 clamp(1.25rem,3vw,2.5rem);margin-bottom:3rem}
.section-dark .eyebrow{color:var(--accent)}
.section-dark h2{font-size:clamp(1.9rem,3.6vw,2.8rem);margin-top:1rem;text-transform:uppercase;max-width:24ch}
.case-copy{grid-column:1/3;padding:0 clamp(1.25rem,3vw,2.5rem)}
.case-copy p{color:#c9c2ae;margin-bottom:1.1rem;max-width:38rem}
.case-copy em{color:var(--bone)}
.case-stats{list-style:none;padding:1.3rem 0;margin:1rem 0 1.4rem;border-top:1px solid var(--line-inv);border-bottom:1px solid var(--line-inv);
  display:flex;gap:2.5rem;flex-wrap:wrap}
.case-stats strong{font-size:1.25rem;font-weight:600;display:block}
.case-stats span{font-size:.72rem;letter-spacing:.08em;color:#96907e}
.footnote{font-size:.78rem;color:#96907e;margin-top:1.2rem}
.case-visual{grid-column:3;position:relative;min-height:22rem;margin:0 clamp(1.25rem,3vw,2.5rem)}
.frame{position:absolute;border:1px solid var(--line-inv);background:var(--dark-2);padding:.5rem}
.plate-no{font-size:.62rem;letter-spacing:.22em;color:var(--accent)}
.frame .plate-no{position:absolute;bottom:.6rem;left:.7rem}
.frame-a{width:64%;aspect-ratio:4/5;top:0;left:0}
.frame-b{width:58%;aspect-ratio:4/5;top:18%;right:0;box-shadow:6px 6px 0 var(--accent)}
.audio-chip{position:absolute;bottom:4%;left:4%;background:var(--bone);color:var(--ink);font-size:.74rem;font-weight:500;
  padding:.55rem 1rem;box-shadow:0 4px 14px rgba(0,0,0,.4)}

/* Process */
.steps{display:grid;grid-template-columns:1fr 1fr;gap:2.2rem 2rem;list-style:none;padding:0}
.steps h3{font-size:1.15rem;margin-bottom:.5rem}
.steps p{font-size:.9rem;color:var(--ink-soft)}
html.flooded .steps p{color:var(--ink)}
.steps .cat-no{border-top:2px solid var(--ink);padding-top:.8rem;font-size:.72rem}

/* Contact */
.contact-form{display:flex;flex-direction:column;gap:1.2rem;max-width:40rem}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem}
.contact-form label{display:flex;flex-direction:column;gap:.45rem;
  font-size:.66rem;font-weight:500;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-soft)}
html.flooded .contact-form label{color:var(--ink)}
.contact-form input,.contact-form textarea{
  font:1rem 'Synonym',sans-serif;padding:.8rem 1rem;border:1px solid var(--line);
  background:rgba(255,255,255,.55);color:var(--ink)}
.contact-form input:focus,.contact-form textarea:focus{outline:2px solid var(--accent);outline-offset:1px}
html.flooded .contact-form input:focus,html.flooded .contact-form textarea:focus{outline-color:var(--ink)}
.contact-form .btn{align-self:flex-start}

/* Footer */
.site-footer{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  padding:1.4rem clamp(1.25rem,3vw,2.5rem);border-top:1px solid var(--line);
  font-size:.68rem;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-soft)}
html.flooded .site-footer{color:var(--ink)}

/* Reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.1s}.d2{transition-delay:.2s}.d3{transition-delay:.3s}.d4{transition-delay:.4s}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}
  body,.site-header,.accent-cue{transition:none}
}

/* Case-study page */
.cs-hero{padding:clamp(3rem,6vw,5rem) 0 2rem}
.cs-hero .eyebrow{grid-column:1/-1;padding:0 clamp(1.25rem,3vw,2.5rem)}
.cs-hero h1{grid-column:1/3;padding:1.2rem clamp(1.25rem,3vw,2.5rem) 0;
  font-size:clamp(2.4rem,5.5vw,4.6rem);font-weight:700;text-transform:uppercase;letter-spacing:-.03em;line-height:.96}
.cs-hero h1 em{font-style:normal;color:var(--accent);transition:color .5s var(--ease)}
html.flooded .cs-hero h1 em{color:var(--bone)}
.cs-meta{grid-column:1/-1;display:flex;gap:2.5rem;flex-wrap:wrap;margin:2.2rem clamp(1.25rem,3vw,2.5rem) 0;
  padding-top:1.4rem;border-top:1px solid var(--line)}
.cs-meta div{font-size:.85rem;color:var(--ink-soft)}
html.flooded .cs-meta div{color:var(--ink)}
.cs-meta strong{display:block;font-size:.62rem;letter-spacing:.24em;text-transform:uppercase;color:var(--accent);margin-bottom:.3rem;font-weight:500;transition:color .5s var(--ease)}
html.flooded .cs-meta strong{color:var(--ink)}
.prose{display:grid;grid-template-columns:var(--third) 1fr;padding:2rem 0 4rem}
.prose>*{grid-column:2;max-width:44rem;padding:0 clamp(1.25rem,3vw,2.5rem)}
.prose h2{font-size:1.5rem;text-transform:uppercase;margin:2.4rem 0 .9rem}
.prose p{margin-bottom:1.1rem;color:var(--ink-soft)}
html.flooded .prose p{color:var(--ink)}
.prose p strong{color:var(--ink);font-weight:600}
.prose blockquote{border-left:3px solid var(--accent);padding:.4rem 0 .4rem 1.4rem;margin:1.8rem 0 1.8rem;
  font-size:1.3rem;font-weight:600;letter-spacing:-.01em;color:var(--ink);margin-left:clamp(1.25rem,3vw,2.5rem);max-width:40rem}
.back-link{font-size:.8rem;font-weight:500;letter-spacing:.1em;text-decoration:none;color:var(--accent);text-transform:uppercase;transition:color .5s var(--ease)}
html.flooded .back-link{color:var(--ink)}

/* Responsive */
@media(max-width:56rem){
  .grid3,.split,.prose{grid-template-columns:1fr}
  .hero{min-height:0;padding-top:1.5rem}
  .hero h1,.hero-side,.case-copy,.case-visual,.cs-hero h1,.prose>*{grid-column:1}
  .split>aside{margin-bottom:2rem}
  .case-visual{margin-top:2.5rem;max-width:24rem}
  .lines{background:linear-gradient(90deg,rgba(235,230,215,.14) 1px,transparent 1px) no-repeat left 50% top/1px 100%}
  .accent-cue{left:auto;right:1.25rem;top:auto;bottom:1.5rem;transform:none}
  .accent-cue:hover{transform:scale(1.15)}
}
@media(max-width:44rem){
  .nav-toggle{display:block}
  .site-nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);
    flex-direction:column;padding:1.5rem;gap:1.2rem}
  .site-nav.open{display:flex}
  .form-row,.cards,.steps{grid-template-columns:1fr}
}