:root{
  --brand:#2A4680;
  --brand-dark:#1c3160;
  --tint:#f4f6fb;
  --white:#ffffff;
  --ink:#000000;
  --gold:#c9962c;
  --green:#2e7d4f;
  --red:#b3261e;
  --border:#e2e6f0;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--white);
  color:var(--ink);
  font-family:'Inter',Arial,sans-serif;
  font-size:19px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{text-decoration:none;color:inherit;}
ul,ol{padding-left:22px;}
.container{max-width:1180px;margin:0 auto;padding:0 20px;}
h1,h2,h3,h4{font-family:'Playfair Display',Georgia,serif;color:var(--brand);line-height:1.25;}
h1{font-size:2.3rem;font-weight:800;}
h2{font-size:1.9rem;font-weight:700;}
h3{font-size:1.35rem;font-weight:700;}
h4{font-size:1.05rem;font-weight:600;}
p{margin-bottom:16px;}
.section{padding:56px 0;}
.section-tint{background:var(--tint);}
.center{text-align:center;}
.btn{
  display:inline-block;
  background:var(--gold);
  color:#fff;
  font-weight:700;
  font-family:'Inter',sans-serif;
  padding:16px 38px;
  border-radius:50px;
  font-size:1.05rem;
  letter-spacing:.3px;
  border:none;
  cursor:pointer;
  box-shadow:0 6px 18px rgba(0,0,0,.18);
  transition:transform .15s ease, box-shadow .15s ease;
  text-align:center;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(0,0,0,.22);}
.btn-outline{
  display:inline-block;background:transparent;border:2px solid var(--brand);
  color:var(--brand);font-weight:700;padding:14px 34px;border-radius:50px;
}

/* ===== TOP BAR ===== */
.topbar{background:var(--brand);width:100%;color:#fff;}
.topbar-inner{
  max-width:1180px;margin:0 auto;padding:16px 20px;
  display:flex;align-items:center;justify-content:space-between;
}
.logo{font-family:'Playfair Display',serif;font-size:1.6rem;font-weight:800;color:#fff;}
.logo span{color:var(--gold);}
.nav-links{display:flex;align-items:center;gap:24px;}
.nav-links a{color:#fff;font-weight:600;font-size:.95rem;}
.nav-links a:hover{color:var(--gold);}
.topbar .btn{padding:11px 24px;font-size:.95rem;}
.hamburger{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  background:none;border:none;cursor:pointer;padding:6px;
}
.hamburger span{width:26px;height:3px;background:#fff;border-radius:2px;}
.mobile-menu{display:none;background:var(--brand-dark);}
.mobile-menu.open{display:block;}
.mobile-menu a{
  display:block;color:#fff;padding:14px 20px;font-weight:600;
  border-top:1px solid rgba(255,255,255,.15);
}
.mobile-menu .btn{margin:16px 20px;display:block;text-align:center;}

/* ===== BREADCRUMB / H1 BAND ===== */
.h1-band{width:100%;background:var(--white);padding:34px 0 10px;}
.breadcrumb{font-size:.88rem;color:#666;margin-bottom:10px;}
.breadcrumb a{color:var(--brand);font-weight:600;}
.h1-band h1{max-width:900px;}
.h1-band .subtag{color:#333;font-size:1.1rem;max-width:760px;margin-top:12px;}

/* ===== QUESTION BAND (full width bg) ===== */
.qband{width:100%;background:var(--brand);color:#fff;padding:24px 0;}
.qband h2{color:#fff;margin:0;}

/* ===== CARDS / GRIDS ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:30px;}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:30px;}
.card{
  background:#fff;border:1px solid var(--border);border-radius:14px;padding:26px 24px;
  box-shadow:0 4px 14px rgba(0,0,0,.05);
}
.card h3{font-size:1.1rem;margin-bottom:8px;}
.card p{font-size:.96rem;color:#333;margin-bottom:0;}
.icon{font-size:1.8rem;margin-bottom:10px;}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:30px;}
.step-card{text-align:center;padding:10px;}
.step-num{
  width:50px;height:50px;border-radius:50%;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.15rem;
  margin:0 auto 12px;font-family:'Playfair Display',serif;
}
.step-card h3{font-size:1rem;}
.step-card p{font-size:.9rem;color:#333;}

.checklist{list-style:none;padding:0;margin-top:20px;}
.checklist li{padding-left:32px;position:relative;margin-bottom:12px;font-size:1rem;}
.checklist li::before{content:"✔";position:absolute;left:0;color:var(--green);font-weight:800;}

.ingredient-card{
  background:#fff;border:1px solid var(--border);border-radius:14px;padding:24px 26px;
  margin-bottom:20px;box-shadow:0 4px 14px rgba(0,0,0,.05);
}
.ingredient-head{display:flex;align-items:center;gap:12px;margin-bottom:8px;}
.research-note{
  background:var(--tint);border-left:4px solid var(--brand);padding:14px 18px;border-radius:0 8px 8px 0;margin-top:10px;
}
.research-note h4{margin-bottom:6px;font-size:.98rem;}
.research-note p{margin-bottom:0;font-size:.93rem;color:#333;}

/* ===== FAQ ===== */
.faq-item{border-bottom:1px solid var(--border);padding:4px 0;}
.faq-item summary{
  cursor:pointer;font-weight:700;color:var(--brand);padding:14px 4px;font-size:1.02rem;
  list-style:none;position:relative;padding-right:30px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:4px;top:12px;font-size:1.3rem;color:var(--brand);font-weight:700;
}
.faq-item[open] summary::after{content:"–";}
.faq-item p{padding:0 4px 14px;color:#333;font-size:.96rem;margin:0;}

/* ===== FINAL CTA ===== */
.final-cta{background:var(--brand);color:#fff;padding:58px 0;text-align:center;}
.final-cta h2{color:#fff;}
.final-cta p{color:#e7ecf7;max-width:640px;margin:0 auto 20px;}
.final-cta img{max-width:320px;margin:0 auto 24px;}
.final-cta .btn{font-size:1.1rem;padding:17px 42px;}

/* ===== AI CITATION STRIP ===== */
.cite-strip{background:#eef1f8;padding:30px 0;}
.cite-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:center;}
.cite-grid h4{margin-bottom:6px;}
.cite-grid p{margin-bottom:0;font-size:.93rem;color:#333;}
.cite-links{display:flex;gap:16px;flex-wrap:wrap;justify-content:flex-end;}
.cite-links a{font-size:.9rem;font-weight:600;color:var(--brand);}

/* ===== FOOTER ===== */
footer{background:#141c33;color:#cfd6e8;padding:40px 0 22px;}
.footer-grid{display:grid;grid-template-columns:1fr 1fr 1.2fr;gap:28px;margin-bottom:24px;}
footer h4{color:#fff;margin-bottom:12px;font-size:.98rem;}
footer a{color:#cfd6e8;font-size:.9rem;}
footer ul{list-style:none;padding:0;}
footer li{margin-bottom:9px;}
.footer-disclaimer{font-size:.79rem;color:#8f97ac;line-height:1.6;border-top:1px solid #2a334f;padding-top:20px;margin-top:8px;}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:.83rem;
  color:#8f97ac;margin-top:18px;
}

/* ===== RESPONSIVE ===== */
@media(max-width:900px){
  .nav-links{display:none;}
  .hamburger{display:flex;}
  .grid-3{grid-template-columns:1fr 1fr;}
  .grid-2{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cite-grid{grid-template-columns:1fr;}
  .cite-links{justify-content:flex-start;}
  h1{font-size:1.75rem;}
  h2{font-size:1.45rem;}
  body{font-size:18px;}
}
@media(max-width:520px){
  .grid-3{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
}