/* ===== Tokens ===== */
:root{
  --bg: #F7F4EE;
  --ink: #1F2A24;
  --ink-soft: #4A554D;
  --primary: #1B4332;
  --primary-light: #2F5D46;
  --gold: #D4AF37;
  --gold-deep: #B8952A;
  --mist: #E7EEE8;
  --line: #DAD4C6;
  --paper: #FFFFFF;

  --serif: "Fraunces", Georgia, serif;
  --sans: "Public Sans", -apple-system, BlinkMacSystemFont, sans-serif;

  --radius: 14px;
  --shadow: 0 4px 24px rgba(27, 67, 50, 0.06);
  --shadow-lg: 0 14px 44px rgba(27, 67, 50, 0.10);
  --max-w: 840px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;}
img{max-width:100%;display:block;}
:focus-visible{outline:2px solid var(--gold-deep);outline-offset:2px;}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.01ms !important;transition-duration:0.01ms !important;scroll-behavior:auto !important;}
}

/* ===== Disclosure bar ===== */
.disclosure-bar{
  background:var(--primary);
  color:#EDEBE3;
  padding:8px 20px;
  text-align:center;
}
.disclosure-bar p{margin:0;font-size:0.78rem;letter-spacing:0.01em;}

/* ===== Masthead ===== */
.masthead{background:var(--paper);position:sticky;top:0;z-index:20;}
.masthead-inner{
  max-width:1040px;margin:0 auto;
  display:flex;align-items:center;gap:16px;
  padding:16px 20px;
}
.wordmark{
  font-family:var(--serif);font-weight:600;font-size:1.25rem;
  text-decoration:none;color:var(--primary);
}
.kicker{
  font-size:0.7rem;text-transform:uppercase;letter-spacing:0.12em;
  color:var(--gold-deep);border:1px solid var(--gold);
  padding:3px 8px;border-radius:100px;
}
.masthead-nav{margin-left:auto;display:flex;gap:24px;}
.masthead-nav a{
  text-decoration:none;color:var(--ink-soft);font-size:0.9rem;font-weight:500;
}
.masthead-nav a:hover{color:var(--primary);}
.hairline{height:1px;background:var(--line);}

@media (max-width:640px){
  .masthead-nav{display:none;}
}

/* ===== Hero ===== */
.hero{
  max-width:1040px;margin:0 auto;
  display:grid;grid-template-columns:1.1fr 0.9fr;gap:48px;
  align-items:center;
  padding:64px 20px 56px;
}
.eyebrow{
  font-size:0.78rem;text-transform:uppercase;letter-spacing:0.14em;
  color:var(--gold-deep);font-weight:600;margin:0 0 14px;
}
.hero h1{
  font-family:var(--serif);font-weight:500;
  font-size:clamp(2rem, 4vw, 2.9rem);
  line-height:1.15;margin:0 0 20px;color:var(--primary);
}
.hero h1 span{display:block;color:var(--ink);font-weight:400;}
.hero-sub{
  font-size:1.05rem;color:var(--ink-soft);max-width:46ch;margin:0 0 28px;
}
.hero-visual{position:relative;aspect-ratio:4/3;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg);}
.hero-photo{width:100%;height:100%;object-fit:cover;}
.fog-overlay{
  position:absolute;inset:0;
  backdrop-filter:blur(4px) saturate(0.92);
  background:rgba(247,244,238,0.08);
  transition:backdrop-filter 1.1s ease, background 1.1s ease;
  pointer-events:none;
}
.hero-visual.is-clear .fog-overlay{backdrop-filter:blur(0px) saturate(1);background:rgba(247,244,238,0);}

/* Supporting editorial photos within sections */
.science-visual{
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  margin-bottom:32px;
}
.science-visual img{width:100%;height:auto;object-fit:cover;aspect-ratio:3/2;}
.visual-caption{
  font-size:0.85rem;color:var(--ink-soft);font-style:italic;
  padding:14px 18px;margin:0;background:var(--paper);
}

.approach-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;margin-bottom:20px;
}
.approach-visual{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);}
.approach-visual img{width:100%;height:auto;object-fit:cover;aspect-ratio:3/2;}
@media (max-width:760px){
  .approach-grid{grid-template-columns:1fr;}
  .approach-visual{order:-1;}
}

@media (max-width:800px){
  .hero{grid-template-columns:1fr;padding-top:40px;}
  .hero-visual{order:-1;max-width:280px;margin:0 auto;}
}

/* ===== Buttons ===== */
.btn{
  display:inline-block;text-decoration:none;font-weight:600;
  padding:14px 28px;border-radius:10px;font-size:0.98rem;
  transition:transform 0.15s ease, box-shadow 0.15s ease;
}
.btn-primary{
  background:var(--gold);color:#22200F;box-shadow:var(--shadow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.btn-ghost{
  color:var(--primary);border:1.5px solid var(--primary);padding:12px 24px;
}
.btn-ghost:hover{background:var(--primary);color:#fff;}
.btn-large{padding:18px 36px;font-size:1.05rem;}
.btn-block{display:block;text-align:center;width:100%;}

/* ===== Article sections ===== */
.article-section{
  max-width:var(--max-w);margin:0 auto;padding:96px 20px;
}
.article-section.band{
  max-width:none;background:var(--mist);
}
.article-section.band > *{max-width:var(--max-w);margin-left:auto;margin-right:auto;}
.section-eyebrow{
  font-size:0.78rem;text-transform:uppercase;letter-spacing:0.14em;
  color:var(--gold-deep);font-weight:600;margin:0 0 10px;
}
.article-section h2{
  font-family:var(--serif);font-weight:500;font-size:clamp(1.5rem,3vw,2rem);
  color:var(--primary);margin:0 0 16px;
}
.lede{font-size:1.08rem;color:var(--ink-soft);margin:0 0 32px;}

/* Card grid */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.info-card{
  background:var(--paper);border-radius:var(--radius);padding:26px;
  box-shadow:var(--shadow);
}
.info-card h3{font-family:var(--serif);margin:0 0 10px;color:var(--primary);font-size:1.15rem;}
.info-card p{margin:0;color:var(--ink-soft);font-size:0.95rem;}
@media (max-width:760px){.card-grid{grid-template-columns:1fr;}}

/* Science rows */
.science-list{display:flex;flex-direction:column;gap:22px;margin-bottom:36px;}
.science-row{display:grid;grid-template-columns:170px 1fr;gap:20px;align-items:start;}
.science-tag{
  font-family:var(--serif);color:var(--primary);font-weight:600;font-size:1.02rem;
  border-left:3px solid var(--gold);padding-left:14px;
}
.science-row p{margin:0;color:var(--ink-soft);}
@media (max-width:640px){.science-row{grid-template-columns:1fr;}.science-tag{border-left:none;border-top:3px solid var(--gold);padding-left:0;padding-top:8px;}}

.pull-stat{
  background:var(--paper);border-radius:var(--radius);padding:28px 30px;
  box-shadow:var(--shadow);border-left:4px solid var(--gold);
}
.pull-stat p{margin:0;font-family:var(--serif);font-size:1.15rem;color:var(--primary);}

/* Benefits */
.benefit-list{list-style:none;padding:0;margin:0 0 24px;display:flex;flex-direction:column;gap:14px;}
.benefit-list li{
  position:relative;padding-left:30px;color:var(--ink);font-size:1.02rem;
}
.benefit-list li::before{
  content:"";position:absolute;left:0;top:7px;width:16px;height:16px;
  border-radius:50%;background:var(--gold);
}
.fine-note{font-size:0.78rem;color:var(--ink-soft);opacity:0.85;font-style:italic;margin:10px 0 32px;line-height:1.5;}

.cta-block{
  background:var(--primary);color:#fff;border-radius:var(--radius);
  padding:32px;text-align:center;
}
.cta-block-title{font-family:var(--serif);font-size:1.2rem;margin:0 0 18px;}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--paper);border-radius:10px;padding:18px 22px;box-shadow:var(--shadow);
}
.faq-item summary{
  cursor:pointer;font-weight:600;color:var(--primary);font-size:1.02rem;
  list-style:none;display:flex;justify-content:space-between;align-items:center;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:1.3rem;color:var(--gold-deep);}
.faq-item[open] summary::after{content:"–";}
.faq-item p{margin:14px 0 0;color:var(--ink-soft);}

/* Final CTA */
.final-cta{
  text-align:center;padding:72px 20px 96px;max-width:600px;margin:0 auto;
}
.final-cta h2{font-family:var(--serif);color:var(--primary);font-size:clamp(1.6rem,3vw,2.1rem);margin:0 0 14px;}
.final-cta p{color:var(--ink-soft);margin:0 0 28px;}

/* Footer */
.site-footer{background:var(--primary);color:#CFE0D6;padding:48px 20px 100px;}
.footer-inner{max-width:760px;margin:0 auto;}
.footer-disclaimer{font-size:0.8rem;line-height:1.6;margin:0 0 14px;color:#CFE0D6;}
.footer-links{display:flex;gap:20px;margin:24px 0 16px;flex-wrap:wrap;}
.footer-links a{font-size:0.85rem;text-decoration:underline;color:#EDEBE3;}
.footer-copy{font-size:0.78rem;color:#9CB6A8;margin:0;}

/* Sticky mobile CTA */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:30;
  background:var(--paper);padding:12px 16px;
  box-shadow:0 -6px 20px rgba(0,0,0,0.1);
  transform:translateY(100%);transition:transform 0.3s ease;
}
.sticky-cta.visible{transform:translateY(0);}
@media (min-width:900px){.sticky-cta{display:none;}}

/* ===== Reading progress bar ===== */
.progress-bar{
  position:fixed;top:0;left:0;height:3px;width:0%;
  background:var(--gold);z-index:40;transition:width 0.1s linear;
}

/* ===== Unified photo color grading ===== */
.photo-grade{
  filter:sepia(0.08) saturate(1.05) brightness(0.98) contrast(1.02);
  transition:transform 0.4s ease;
}
.brain-photo{
  filter:sepia(0.05) saturate(0.7) brightness(0.92) contrast(1.05);
}
.science-visual, .approach-visual, .hero-visual, .final-cta-visual{overflow:hidden;}
.science-visual img:hover, .approach-visual img:hover, .final-cta-visual img:hover{
  transform:scale(1.03);
}

/* ===== Scroll reveal ===== */
.reveal{opacity:0;transform:translateY(18px);transition:opacity 0.7s ease, transform 0.7s ease;}
.reveal.in-view{opacity:1;transform:translateY(0);}

/* ===== Tag pills (science section) ===== */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 28px;}
.pill{
  font-size:0.8rem;font-weight:600;color:var(--primary);
  background:var(--paper);border:1px solid var(--gold);
  padding:6px 14px;border-radius:100px;
}

/* ===== Trust badges ===== */
.badges-row{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0;}
.badge{
  font-size:0.85rem;font-weight:600;color:var(--primary);
  background:var(--mist);padding:8px 16px;border-radius:8px;
}

/* ===== Mid-page CTA ===== */
.mid-cta{
  max-width:var(--max-w);margin:0 auto;padding:0 20px 40px;
  text-align:center;
}
.mid-cta p{color:var(--ink-soft);margin:0 0 16px;font-size:1rem;}

.final-cta-visual{
  width:140px;height:140px;border-radius:50%;overflow:hidden;
  margin:0 auto 24px;box-shadow:var(--shadow);
}
.final-cta-visual img{width:100%;height:100%;object-fit:cover;}