:root{
  --brand:#00828B;
  --brand-dark:#00646b;
  --footer-dark:#062b2e;
  --text:#000000;
  --tint:#f4faf9;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  background:#ffffff;
  color:var(--text);
  font-family:'Inter',Arial,sans-serif;
  font-size:19px;
  line-height:1.65;
  overflow-x:hidden;
}
h1,h2,h3,h4{
  font-family:'Playfair Display',Georgia,serif;
  color:var(--brand);
  line-height:1.25;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
.container{max-width:1140px;margin:0 auto;padding:0 20px;}
ul{list-style:none;}

/* ---------- TOP BAR ---------- */
.topbar{background:var(--brand);width:100%;color:#fff;}
.topbar-inner{max-width:1140px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;}
.logo{font-family:'Playfair Display',serif;font-size:28px;font-weight:800;color:#fff;}
.nav-links{display:flex;gap:26px;list-style:none;}
.nav-links a{color:#fff;font-weight:600;font-size:16px;}
.nav-links a:hover{text-decoration:underline;}
.order-now-btn{background:#fff;color:var(--brand);font-weight:700;padding:10px 20px;border-radius:30px;font-size:15px;white-space:nowrap;}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px;}
.hamburger span{width:26px;height:3px;background:#fff;border-radius:2px;}
.mobile-nav{display:none;background:var(--brand-dark);flex-direction:column;width:100%;}
.mobile-nav.open{display:flex;}
.mobile-nav a{color:#fff;padding:14px 20px;font-weight:600;border-top:1px solid rgba(255,255,255,0.15);}

/* ---------- BREADCRUMB ---------- */
.breadcrumb{
  background:var(--tint);
  padding:14px 0;
  font-size:15px;
}
.breadcrumb a{color:var(--brand-dark);font-weight:600;}
.breadcrumb span{color:#777;margin:0 6px;}

/* ---------- H1 BAND ---------- */
.h1-band{width:100%;background:#ffffff;padding:34px 0 10px;text-align:center;}
h1{font-size:32px;max-width:900px;margin:0 auto;padding:0 20px;}
.h1-sub{max-width:760px;margin:14px auto 0;padding:0 20px;font-size:19px;color:#333;}

/* ---------- TOC ---------- */
.toc{
  background:var(--tint);
  border:1px solid #dfefee;
  border-radius:12px;
  padding:22px 26px;
  margin:30px auto 10px;
  max-width:900px;
}
.toc h2{font-size:19px;margin-bottom:12px;}
.toc ol{list-style:decimal;padding-left:22px;}
.toc li{margin-bottom:8px;}
.toc a{color:var(--brand-dark);font-weight:600;}
.toc a:hover{text-decoration:underline;}

/* ---------- SECTION HEADER BAND (question-style H2) ---------- */
.band{width:100%;background:var(--brand);padding:38px 0;text-align:center;color:#fff;}
.band h2{color:#fff;font-size:28px;}
.band p.band-sub{color:#eaf7f7;max-width:720px;margin:12px auto 0;font-size:17px;}

section{padding:50px 0;}
.tint{background:var(--tint);}
.content-wrap{max-width:900px;margin:0 auto;}
.content-wrap p{margin-bottom:18px;}
.content-wrap h2{font-size:27px;margin:36px 0 16px;}
.content-wrap h3{font-size:22px;margin:26px 0 12px;}
.content-wrap ul{list-style:disc;padding-left:24px;margin-bottom:18px;}
.content-wrap ul li{margin-bottom:10px;}

h2.section-heading{font-size:28px;text-align:center;margin-bottom:30px;}

/* ---------- CARD GRIDS (reused across pages) ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:10px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:10px;}
.info-card{background:#fff;border:1px solid #e4f1f1;border-radius:12px;padding:24px;}
.info-card h3{font-size:20px;margin-bottom:8px;}
.icon-lg{font-size:28px;margin-bottom:10px;display:block;}

.ingredient-card{background:#fff;border:1px solid #e4f1f1;border-radius:12px;padding:26px;margin-bottom:20px;}
.ingredient-title{display:flex;align-items:center;gap:12px;margin-bottom:10px;}
.ingredient-title .icon{font-size:26px;}
.ingredient-title h3{font-size:22px;margin:0;}
.research-note{margin-top:12px;background:var(--tint);border-radius:8px;padding:14px 16px;}
.research-note h4{font-size:15px;text-transform:uppercase;letter-spacing:0.5px;color:var(--brand-dark);margin-bottom:6px;}

.step-card{text-align:center;background:#fff;border-radius:12px;padding:26px 18px;box-shadow:0 6px 16px rgba(0,0,0,0.06);}
.step-num{width:44px;height:44px;background:var(--brand);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;margin:0 auto 14px;font-family:'Playfair Display',serif;}

/* ---------- BUTTONS ---------- */
.btn-primary{display:inline-block;background:var(--brand);color:#fff !important;font-weight:700;padding:16px 34px;border-radius:8px;font-size:17px;text-transform:uppercase;letter-spacing:0.5px;box-shadow:0 8px 20px rgba(0,130,139,0.28);}
.btn-primary:hover{background:var(--brand-dark);}

/* ---------- FAQ ---------- */
details{background:#fff;border:1px solid #e4f1f1;border-radius:10px;padding:16px 20px;margin-bottom:14px;}
summary{font-weight:700;cursor:pointer;font-size:18px;color:var(--brand-dark);list-style:none;}
summary::-webkit-details-marker{display:none;}
summary:after{content:"+";float:right;font-size:22px;color:var(--brand);}
details[open] summary:after{content:"−";}
details p{margin-top:12px;color:#333;}

/* ---------- FINAL CTA ---------- */
.final-cta{background:var(--brand);color:#fff;text-align:center;padding:56px 0;}
.final-cta h2{color:#fff;font-size:28px;margin-bottom:14px;}
.final-cta p{color:#eaf7f7;max-width:700px;margin:0 auto 26px;}
.final-cta img{max-width:260px;margin:0 auto 26px;}
.final-cta .btn-primary{background:#fff;color:var(--brand) !important;font-size:19px;padding:18px 40px;}
.final-cta .btn-primary:hover{background:#eaf7f7;}

/* ---------- AI CITATION STRIP ---------- */
.ai-strip{background:#f4faf9;padding:30px 0;border-top:1px solid #e0efee;}
.ai-strip .flex{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;}
.ai-strip h3{font-size:19px;margin-bottom:6px;}
.ai-strip p{font-size:16px;color:#333;max-width:500px;}
.ai-links{display:flex;gap:20px;flex-wrap:wrap;}
.ai-links a{font-size:15px;font-weight:600;color:var(--brand-dark);}

/* ---------- FOOTER ---------- */
footer{background:var(--footer-dark);color:#cfe8e6;padding:44px 0 20px;font-size:15px;}
.footer-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:30px;margin-bottom:26px;}
footer h4{color:#fff;font-family:'Inter',sans-serif;font-size:16px;margin-bottom:14px;}
footer a{color:#cfe8e6;}
footer ul li{margin-bottom:10px;}
footer a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.12);padding-top:18px;font-size:13px;color:#9fc4c1;line-height:1.7;}

/* ---------- BACK TO TOP ---------- */
#backToTop{position:fixed;bottom:26px;right:22px;background:var(--brand);color:#fff;width:48px;height:48px;border-radius:50%;border:none;font-size:22px;cursor:pointer;display:none;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(0,0,0,0.25);z-index:999;}
#backToTop.show{display:flex;}

/* ---------- RESPONSIVE ---------- */
@media(max-width:900px){
  .grid-2,.grid-3,.footer-grid{grid-template-columns:1fr;}
  .nav-links{display:none;}
  .hamburger{display:flex;}
  h1{font-size:25px;}
  .band h2{font-size:23px;}
  .footer-grid{gap:22px;}
}
@media(max-width:600px){
  body{font-size:17px;}
}