/* ============================================================
   AEQUUS — design system
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,340..600&family=Fraunces:ital,opsz,wght@1,9..144,400..500&family=Inter:wght@400;500;600&display=swap');

:root{
  --ink:        #14181c;
  --ink-soft:   #444d55;
  --paper:      #f7f5ef;
  --paper-2:    #efece2;
  --line:       #dcd8cb;
  --teal:       #60183d;
  --teal-deep:  #430f2a;
  --copper:     #756f59;
  --copper-tint:#b3ab8f;
  --white:      #fffdf9;

  --serif: 'Fraunces', Georgia, 'Times New Roman', serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --maxw: 1180px;
  --pad: clamp(20px, 5vw, 64px);

  color-scheme: light;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

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

a{ color:inherit; text-decoration:none; }

.wrap{
  max-width:var(--maxw);
  margin:0 auto;
  padding-left:var(--pad);
  padding-right:var(--pad);
}

h1,h2,h3,h4{
  font-family:var(--serif);
  font-weight:560;
  letter-spacing:-0.01em;
  line-height:1.12;
  margin:0 0 0.5em;
  color:var(--ink);
}
h1{ font-size:clamp(2.4rem, 5vw, 4.1rem); font-weight:520; }
h2{ font-size:clamp(1.7rem, 3.2vw, 2.5rem); }
h3{ font-size:clamp(1.25rem, 2vw, 1.55rem); }

p{ margin:0 0 1.1em; color:var(--ink-soft); }
p.lead{ font-size:1.2rem; color:var(--ink); line-height:1.55; }

.eyebrow{
  font-family:var(--sans);
  font-size:0.76rem;
  font-weight:600;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--teal);
  display:inline-flex;
  align-items:center;
  gap:0.5em;
  margin-bottom:1em;
}
.eyebrow::before{
  content:"";
  width:22px; height:1px;
  background:var(--copper);
  display:inline-block;
}

/* ---------- header ---------- */
header.site{
  position:sticky; top:0; z-index:50;
  background:rgba(247,245,239,0.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
header.site .bar{
  display:flex; align-items:center; justify-content:space-between;
  padding-top:18px; padding-bottom:18px;
  flex-wrap:wrap; gap:14px;
}
.brand{
  font-family:var(--serif);
  font-size:1.35rem;
  font-weight:560;
  letter-spacing:0.01em;
  color:var(--ink);
  display:flex; align-items:center; gap:12px;
}
.brand-logo{
  height:34px; width:auto; display:block;
}
.brand small{
  font-family:var(--sans);
  font-size:0.62rem;
  font-weight:600;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--ink-soft);
  border-left:1px solid var(--line);
  padding-left:12px;
}
nav.primary{ display:flex; align-items:center; gap:34px; }
nav.primary a{
  font-size:0.86rem; font-weight:500; color:var(--ink-soft);
  position:relative; padding:4px 0;
}
nav.primary a:hover{ color:var(--ink); }
nav.primary a.current{ color:var(--ink); }
nav.primary a.current::after{
  content:""; position:absolute; left:0; right:0; bottom:-3px; height:2px; background:var(--copper);
}
.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:11px 20px;
  border-radius:2px;
  font-size:0.84rem; font-weight:600;
  border:1px solid var(--ink);
  transition:background .15s ease, color .15s ease, border-color .15s ease;
}
.btn.primary{ background:var(--ink); color:var(--white); }
.btn.primary:hover{ background:var(--teal-deep); border-color:var(--teal-deep); }
.btn.ghost{ background:transparent; color:var(--ink); }
.btn.ghost:hover{ background:var(--ink); color:var(--white); }
.btn.mri{
  border-color:var(--copper); color:var(--copper);
}
.btn.mri:hover{ background:var(--copper); color:var(--white); }

/* ---------- hero ---------- */
.hero{
  padding:96px 0 76px;
  border-bottom:1px solid var(--line);
  position:relative;
  overflow:hidden;
}
.hero::after{
  content:"";
  position:absolute;
  top:-60px; right:-60px;
  width:420px; height:420px;
  background:url('../assets/aequus-symbol.png') center/contain no-repeat;
  opacity:0.05;
  pointer-events:none;
}
.hero .grid{
  display:grid; grid-template-columns:1.25fr 0.85fr; gap:56px; align-items:end;
}
.hero h1{ max-width:15ch; }
.hero .lead{ max-width:46ch; }
.hero-stats{ display:flex; flex-direction:column; gap:20px; }
.hero-stat{ border-top:1px solid var(--line); padding-top:14px; }
.hero-stat .num{ font-family:var(--serif); font-size:2rem; color:var(--teal); display:block; }
.hero-stat .cap{ font-size:0.82rem; color:var(--ink-soft); }

/* ---------- pillars / 3-up ---------- */
.pillars{ padding:78px 0; border-bottom:1px solid var(--line); }
.pillars .head{ max-width:56ch; margin-bottom:48px; }
.pillar-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:36px; }
.pillar{ border-top:2px solid var(--ink); padding-top:20px; }
.pillar .idx{ font-family:var(--serif); font-size:0.95rem; color:var(--copper); display:block; margin-bottom:10px; }
.pillar h3{ margin-bottom:10px; }
.pillar p{ font-size:0.95rem; }

/* ---------- case grid ---------- */
.section{ padding:80px 0; }
.section.alt{ background:var(--paper-2); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.section-head{ display:flex; justify-content:space-between; align-items:flex-end; gap:24px; margin-bottom:44px; flex-wrap:wrap; }
.section-head .head-text{ max-width:60ch; }

.case-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line); }
.case-grid.case-grid-2{ margin-top:28px; }
.case-card{
  background:var(--paper);
  padding:32px 28px;
  display:flex; flex-direction:column; gap:14px; min-height:300px;
}
.case-card:hover{ background:var(--white); }
.case-card .sector{ font-size:0.72rem; font-weight:600; letter-spacing:0.1em; text-transform:uppercase; color:var(--teal); }
.case-card h3{ font-size:1.28rem; margin-bottom:4px; }
.case-card p{ font-size:0.9rem; flex:1; }
.case-card .result{ display:flex; align-items:baseline; gap:8px; border-top:1px solid var(--line); padding-top:14px; }
.case-card .result .num{ font-family:var(--serif); font-size:1.5rem; color:var(--ink); }
.case-card .result .cap{ font-size:0.78rem; color:var(--ink-soft); }
.case-card .go{ font-size:0.82rem; font-weight:600; color:var(--ink); }
.case-card .go::after{ content:" →"; }

/* ---------- framework diagram (cycle) ---------- */
.cycle{ display:grid; grid-template-columns:repeat(4,1fr); gap:0; margin-top:10px; }
.cycle .step{ position:relative; padding:26px 22px 22px; border-left:1px solid var(--line); }
.cycle .step:first-child{ border-left:none; }
.cycle .step .n{ font-family:var(--serif); font-size:1.6rem; color:var(--copper); display:block; margin-bottom:10px; }
.cycle .step h4{ font-family:var(--sans); font-weight:600; font-size:0.98rem; text-transform:uppercase; letter-spacing:0.03em; margin-bottom:8px; color:var(--ink);}
.cycle .step p{ font-size:0.88rem; margin:0; }

/* ---------- domains pentagon list ---------- */
.domains{ display:grid; grid-template-columns:repeat(5,1fr); gap:1px; background:var(--line); border:1px solid var(--line); margin-top:10px;}
.domain{ background:var(--white); padding:22px 18px; }
.domain .n{ font-family:var(--serif); color:var(--teal); font-size:1.1rem; display:block; margin-bottom:8px;}
.domain h4{ font-family:var(--sans); font-weight:600; font-size:0.86rem; margin:0 0 6px; }
.domain p{ font-size:0.8rem; margin:0; }

/* ---------- quote ---------- */
.quote-block{
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  padding:64px 0; text-align:center;
}
.quote-block blockquote{
  font-family:var(--serif); font-style:italic; font-weight:400;
  font-size:clamp(1.35rem,2.6vw,1.9rem);
  max-width:44ch; margin:0 auto 20px; color:var(--ink); line-height:1.4;
}
.quote-block cite{ font-style:normal; font-size:0.82rem; color:var(--ink-soft); font-weight:500; letter-spacing:0.02em;}

/* ---------- MRI bridge ---------- */
.bridge{
  background:var(--ink); color:var(--paper);
  padding:84px 0;
}
.bridge .grid{ display:grid; grid-template-columns:1.1fr 0.9fr; gap:56px; align-items:center; }
.bridge .eyebrow{ color:var(--copper-tint); }
.bridge .eyebrow::before{ background:var(--copper-tint); }
.bridge h2{ color:var(--white); }
.bridge p{ color:#c7cdd2; }
.bridge .panel{
  border:1px solid #33393f; padding:32px; background:#1b2126;
}
.bridge .panel .kicker{ font-size:0.76rem; text-transform:uppercase; letter-spacing:0.12em; color:var(--copper-tint); font-weight:600; margin-bottom:14px; display:block;}
.bridge .panel h3{ color:var(--white); margin-bottom:12px; }
.bridge .panel p{ color:#c7cdd2; font-size:0.93rem; }

/* ---------- footer ---------- */
footer.site{ padding:56px 0 40px; border-top:1px solid var(--line); }
footer.site .grid{ display:grid; grid-template-columns:1.3fr 1fr 1fr; gap:40px; }
footer.site h4{ font-family:var(--sans); font-size:0.78rem; text-transform:uppercase; letter-spacing:0.1em; font-weight:600; color:var(--ink); margin-bottom:14px; }
footer.site ul{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:9px; }
footer.site a{ font-size:0.9rem; color:var(--ink-soft); }
footer.site a:hover{ color:var(--teal); }
footer.site .bottom{
  margin-top:48px; padding-top:20px; border-top:1px solid var(--line);
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px;
  font-size:0.78rem; color:var(--ink-soft);
}

/* ============================================================
   CASE STUDY PAGE
   ============================================================ */
.case-hero{ padding:64px 0 56px; border-bottom:1px solid var(--line); position:relative; overflow:hidden; }
.case-hero::after{
  content:"";
  position:absolute;
  top:-50px; right:-50px;
  width:320px; height:320px;
  background:url('../assets/aequus-symbol.png') center/contain no-repeat;
  opacity:0.05;
  pointer-events:none;
}
.case-hero .tags{ display:flex; gap:10px; margin-bottom:20px; flex-wrap:wrap;}
.tag{
  font-size:0.72rem; font-weight:600; letter-spacing:0.08em; text-transform:uppercase;
  padding:6px 12px; border:1px solid var(--line); color:var(--ink-soft);
}
.case-hero h1{ max-width:22ch; margin-bottom:18px; }
.case-hero p.lead{ max-width:60ch; }

.case-stats{
  display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
  background:var(--line); border:1px solid var(--line); margin-top:40px;
}
.case-stat{ background:var(--paper); padding:24px 20px; }
.case-stat .num{ font-family:var(--serif); font-size:2.1rem; color:var(--teal); display:block; }
.case-stat .cap{ font-size:0.8rem; color:var(--ink-soft); margin-top:4px; }

.case-body{ padding:72px 0; }
.case-columns{ display:grid; grid-template-columns:220px 1fr; gap:56px; }
.case-columns .rail{ position:sticky; top:100px; align-self:start; }
.rail-item{ display:block; font-size:0.86rem; color:var(--ink-soft); padding:8px 0; border-left:2px solid var(--line); padding-left:14px; margin-bottom:2px;}
.rail-item.current, .rail-item:hover{ color:var(--ink); border-left-color:var(--copper); }

.case-columns article section{ margin-bottom:56px; scroll-margin-top:100px; }
.case-columns article h2{ font-size:1.55rem; margin-bottom:18px; }
.case-columns article ul{ padding-left:1.15em; color:var(--ink-soft); }
.case-columns article li{ margin-bottom:10px; }

.callout{
  background:var(--paper-2); border-left:3px solid var(--teal);
  padding:22px 26px; margin:28px 0;
}
.callout p{ margin:0; color:var(--ink); font-size:0.95rem; }
.callout .k{ font-size:0.74rem; font-weight:600; letter-spacing:0.1em; text-transform:uppercase; color:var(--teal); display:block; margin-bottom:8px;}

.mini-cycle{ display:flex; gap:0; margin:24px 0; flex-wrap:wrap; }
.mini-cycle .s{ flex:1; min-width:130px; border-top:2px solid var(--ink); padding:14px 16px 0 0; }
.mini-cycle .s b{ display:block; font-size:0.85rem; margin-bottom:4px; }
.mini-cycle .s span{ font-size:0.82rem; color:var(--ink-soft); }

.outcome-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:20px; margin-top:20px;}
.outcome-card{ border:1px solid var(--line); padding:22px 24px; background:var(--white); }
.outcome-card .num{ font-family:var(--serif); font-size:1.7rem; color:var(--teal); }
.outcome-card p{ font-size:0.9rem; margin:6px 0 0; }

.case-quote{
  font-family:var(--serif); font-style:italic; font-size:1.35rem; line-height:1.5;
  border-left:2px solid var(--copper); padding-left:24px; margin:32px 0; color:var(--ink);
}

.next-case{
  border-top:1px solid var(--line); padding:56px 0; display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:20px;
}
.next-case .lbl{ font-size:0.76rem; text-transform:uppercase; letter-spacing:0.1em; color:var(--ink-soft); font-weight:600; margin-bottom:6px; display:block;}
.next-case h3{ margin:0; }

/* ---------- responsive ---------- */
@media (max-width: 920px){
  header.site .bar{ justify-content:center; text-align:center; }
  nav.primary{
    width:100%; justify-content:center; flex-wrap:wrap; gap:16px 22px;
    padding-top:2px;
  }
  .hero .grid{ grid-template-columns:1fr; }
  .pillar-grid{ grid-template-columns:1fr; gap:28px; }
  .case-grid, .case-grid.case-grid-2{ grid-template-columns:1fr; }
  .cycle{ grid-template-columns:1fr 1fr; }
  .domains{ grid-template-columns:repeat(2,1fr); }
  .bridge .grid{ grid-template-columns:1fr; }
  footer.site .grid{ grid-template-columns:1fr; gap:28px; }
  .case-columns{ grid-template-columns:1fr; }
  .case-columns .rail{ position:static; display:flex; gap:16px; overflow-x:auto; padding-bottom:8px; }
  .rail-item{ border-left:none; border-bottom:2px solid var(--line); padding:0 0 8px; white-space:nowrap; }
  .rail-item.current, .rail-item:hover{ border-bottom-color:var(--copper); }
  .case-stats{ grid-template-columns:1fr 1fr; }
  .outcome-grid{ grid-template-columns:1fr; }
}