/* =========================================================
   FlowStrong — Shared Stylesheet
   Palette: cream base, deep forest green, sage, soft yellow CTA
   Type: Fraunces (display) + Inter (body) + JetBrains Mono (data)
   ========================================================= */

:root{
  --cream:        #F8FBFE;
  --cream-2:      #EEF5FA;
  --panel:        #FFFFFF;
  --forest:       #123B63;
  --forest-deep:  #082D4E;
  --sage:         #2B7DB7;
  --sage-light:   #DCECF8;
  --yellow:       #F3C449;
  --yellow-dark:  #D9A916;
  --ink:          #102A43;
  --ink-soft:     #53687A;
  --line:         #D9E4EC;
  --white-strip:  #FFFFFF;
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-soft: 0 10px 30px -12px rgba(18,48,40,0.18);
  --shadow-card: 0 4px 18px -6px rgba(18,48,40,0.12);
  --maxw: 1180px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
  font-size: 18px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3,h4{
  font-family: "Fraunces", Georgia, "Times New Roman", serif;
  color: var(--forest-deep);
  line-height: 1.15;
  margin: 0 0 0.5em;
  font-weight: 600;
}
h1{ font-size: clamp(2.4rem, 5vw, 3.6rem); font-weight: 650; }
h2{ font-size: clamp(1.8rem, 3.4vw, 2.5rem); }
h3{ font-size: 1.3rem; }
p{ margin: 0 0 1.1em; color: var(--ink-soft); font-size: 1.08rem; }
a{ color: var(--forest); }
img{ max-width: 100%; display: block; }
.container{ max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
.section{ padding: 84px 0; }
.section.tight{ padding: 56px 0; }
.section-alt{ background: var(--cream-2); }
.eyebrow{
  font-family: "JetBrains Mono", "Courier New", monospace;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  color: var(--sage);
  font-weight: 600;
  display:block;
  margin-bottom: 10px;
}
.lede{ font-size: 1.2rem; max-width: 62ch; }
.center{ text-align: center; margin-left:auto; margin-right:auto; }

/* ---------- Header ---------- */
.site-header{
  position: sticky; top:0; z-index: 100;
  background: rgba(250,248,241,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .25s ease, padding .25s ease;
}
.site-header.scrolled{ box-shadow: var(--shadow-soft); }
.header-inner{
  max-width: var(--maxw); margin:0 auto; padding: 16px 28px;
  display:flex; align-items:center; justify-content:space-between; gap: 20px;
}
.brand{ font-family:"Fraunces",serif; font-weight:700; font-size:1.5rem; color:var(--forest-deep); text-decoration:none; letter-spacing:-0.01em; }
.brand span{ color: var(--sage); }
.main-nav{ display:flex; align-items:center; gap: 30px; }
.main-nav ul{ list-style:none; display:flex; gap:26px; margin:0; padding:0; }
.main-nav a{
  text-decoration:none; color: var(--ink); font-size:0.98rem; font-weight:500;
  position:relative; padding: 4px 0;
}
.main-nav a::after{
  content:""; position:absolute; left:0; bottom:-2px; width:0; height:2px; background: var(--forest);
  transition: width .25s ease;
}
.main-nav a:hover::after{ width:100%; }
.menu-toggle{ display:none; background:none; border:none; cursor:pointer; padding:8px; }
.menu-toggle span{ display:block; width:24px; height:2px; background:var(--forest-deep); margin:5px 0; transition:.2s; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-family:"Inter",sans-serif; font-weight:700; font-size:1rem;
  padding: 15px 30px; border-radius: 999px; text-decoration:none;
  border: 2px solid transparent; cursor:pointer;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
  white-space: nowrap;
}
.btn-cta{
  background: linear-gradient(180deg, var(--yellow) 0%, var(--yellow-dark) 100%);
  color: var(--forest-deep);
  box-shadow: 0 8px 22px -8px rgba(217,169,22,0.65);
}
.btn-cta:hover{ transform: translateY(-3px) scale(1.02); box-shadow: 0 14px 28px -8px rgba(217,169,22,0.75); }
.btn-cta:active{ transform: translateY(-1px) scale(0.99); }
.btn-outline{
  background: transparent; border-color: var(--forest); color: var(--forest);
}
.btn-outline:hover{ background: var(--forest); color:#fff; transform: translateY(-2px); }
.btn-small{ padding: 10px 20px; font-size: 0.9rem; }
.btn-large{ padding: 20px 40px; font-size: 1.15rem; }
.header-cta{ font-size:0.92rem; padding:12px 24px; }

/* ---------- Hero / Intro ---------- */
.hero{ padding: 56px 0 84px; overflow:hidden; background: radial-gradient(circle at 82% 18%, rgba(61,157,219,.14), transparent 30%), linear-gradient(135deg, #F7FBFF 0%, #EAF5FC 52%, #DCEEF9 100%); border-bottom:1px solid #D6E6F0;}
.hero-grid{
  display:grid; grid-template-columns: 0.9fr 1.1fr; gap: 60px; align-items:center;
}
.hero-media{
  position:relative;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,.72);
  border:1px solid rgba(20,82,123,.10);
  box-shadow: 0 18px 42px -20px rgba(22,75,110,.25);
  padding: 30px;
  display:flex; align-items:center; justify-content:center;
  animation: floatIn 1s ease both;
}
.hero-media img{ border-radius: var(--radius-md); animation: gentleFloat 5s ease-in-out infinite; }
@keyframes floatIn{ from{ opacity:0; transform: translateY(24px);} to{ opacity:1; transform:translateY(0);} }
@keyframes gentleFloat{ 0%,100%{ transform: translateY(0);} 50%{ transform: translateY(-10px);} }
.hero-copy{ animation: fadeUp .9s ease .1s both; }
@keyframes fadeUp{ from{opacity:0; transform:translateY(18px);} to{opacity:1; transform:translateY(0);} }
.hero-copy h2{ color: #2B78AD; font-size: 1.3rem; font-weight:500; margin-bottom: 22px; font-family:"Inter",sans-serif;}
.hero-actions{ display:flex; gap:16px; margin-top: 30px; flex-wrap:wrap; }
.hero-note{ margin-top:18px; font-size:0.85rem; color: #53687A; opacity:0.9; }

/* ---------- Stat strip ---------- */
.strip{
  background: var(--white-strip);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.strip-grid{
  display:grid; grid-template-columns: repeat(5,1fr);
}
.strip-item{
  text-align:center; padding: 30px 14px; border-left: 1px solid var(--line);
}
.strip-item:first-child{ border-left:none; }
.strip-num{ font-family:"Fraunces",serif; font-size:2.1rem; color:var(--forest); font-weight:700; }
.strip-label{ font-size:0.85rem; color: var(--ink-soft); margin-top:4px; }

/* ---------- Cards / grids ---------- */
.grid-2{ display:grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items:center; }
.grid-3{ display:grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
.card{
  background: var(--panel); border-radius: var(--radius-md); padding: 30px;
  box-shadow: var(--shadow-card); border: 1px solid var(--line);
  transition: transform .22s ease, box-shadow .22s ease;
}
.card:hover{ transform: translateY(-6px); box-shadow: var(--shadow-soft); }
.card .num{ font-family:"JetBrains Mono",monospace; color:var(--sage); font-weight:700; font-size:0.85rem; }

/* ---------- Tables ---------- */
.table-wrap{ overflow-x:auto; border-radius: var(--radius-md); box-shadow: var(--shadow-card); border:1px solid var(--line); }
table{ width:100%; border-collapse:collapse; background:var(--panel); min-width: 640px; }
caption{ caption-side: top; text-align:left; font-family:"Fraunces",serif; font-size:1.1rem; padding: 16px 20px; color:var(--forest-deep); background:var(--sage-light); }
th,td{ text-align:left; padding: 14px 18px; border-bottom: 1px solid var(--line); font-size:0.96rem; vertical-align: top; }
th{ background: var(--forest); color:#fff; font-weight:600; font-family:"Inter",sans-serif; }
tr:nth-child(even) td{ background: var(--cream-2); }
tr:hover td{ background: var(--sage-light); }

/* ---------- Ingredient image band ---------- */
.ingredient-band{ display:grid; grid-template-columns: repeat(9,1fr); gap:10px; margin-bottom: 34px; }
.ingredient-band figure{ margin:0; text-align:center; }
.ingredient-band img{
  border-radius: var(--radius-sm); aspect-ratio: 1/1; object-fit: cover;
  transition: transform .25s ease; border: 1px solid var(--line);
}
.ingredient-band img:hover{ transform: scale(1.06); }
.ingredient-band figcaption{ font-size:0.72rem; color:var(--ink-soft); margin-top:6px; }

/* ---------- Pricing image ---------- */
.pricing-frame{
  max-width: 780px; margin: 0 auto; text-align:center;
}
.pricing-frame a{ display:block; border-radius: var(--radius-lg); overflow:hidden; box-shadow: var(--shadow-soft); transition: transform .2s ease; }
.pricing-frame a:hover{ transform: translateY(-4px); }
.pricing-frame img{ width:100%; }

/* ---------- Discount callout ---------- */
.discount-box{
  display:grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items:center;
  background: var(--forest); color:#fff; border-radius: var(--radius-lg); padding: 44px; margin-top: 30px;
}
.discount-box h3{ color:#fff; }
.price-row{ display:flex; align-items:baseline; gap:18px; margin: 18px 0 24px; flex-wrap:wrap; }
.price-old{ font-family:"JetBrains Mono",monospace; text-decoration: line-through; opacity:0.6; font-size:1.2rem; }
.price-new{ font-family:"Fraunces",serif; font-size:2.6rem; color: var(--yellow); font-weight:700; }
.discount-box img{ border-radius: var(--radius-md); }

/* ---------- Reviews ---------- */
.review-images{ display:grid; grid-template-columns: repeat(3,1fr); gap: 22px; margin-top: 34px; }
.review-images img{ border-radius: var(--radius-md); box-shadow: var(--shadow-card); border:1px solid var(--line); transition: transform .2s ease; }
.review-images img:hover{ transform: translateY(-5px); }


/* ---------- Compact Customer Stories ---------- */
.customer-stories{ padding-top: 48px; padding-bottom: 48px; }
.stories-intro{ text-align:center; max-width:620px; margin: 8px auto 24px; color:var(--ink-soft); font-size:.95rem; }
.neuro-reviews{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; margin-top:24px; }
.review-card{ display:flex; align-items:center; gap:16px; padding:18px; }
.review-photo{ width:88px; height:88px; flex:0 0 88px; object-fit:cover; border-radius:50%; border:2px solid var(--sage-light); box-shadow:var(--shadow-card); }
.review-content h3{ margin:0 0 4px; font-size:1rem; }
.review-content p{ margin:8px 0 0; font-size:.88rem; line-height:1.55; color:var(--ink-soft); }
.verified{ font-size:.72rem; color:var(--sage); font-weight:600; }
.verified span{ display:inline-flex; width:16px; height:16px; align-items:center; justify-content:center; border-radius:50%; background:var(--sage); color:#fff; margin-right:4px; }
@media(max-width:960px){ .neuro-reviews{grid-template-columns:1fr;} .review-card{max-width:760px;margin:0 auto;width:100%;} }
@media(max-width:600px){ .customer-stories{padding-top:36px;padding-bottom:36px;} .review-card{align-items:flex-start;padding:16px;} .review-photo{width:70px;height:70px;flex-basis:70px;} .review-content p{font-size:.84rem;} }

/* ---------- FAQ ---------- */
.faq-item{ border-bottom: 1px solid var(--line); }
.faq-q{
  width:100%; text-align:left; background:none; border:none; cursor:pointer;
  padding: 22px 4px; display:flex; justify-content:space-between; align-items:center;
  font-family:"Fraunces",serif; font-size:1.12rem; color: var(--forest-deep); gap: 20px;
}
.faq-q .plus{ font-size:1.4rem; color:var(--sage); transition: transform .25s ease; flex-shrink:0; }
.faq-item.open .plus{ transform: rotate(45deg); }
.faq-a{ max-height:0; overflow:hidden; transition: max-height .3s ease; }
.faq-a p{ padding: 0 4px 20px; }
.faq-item.open .faq-a{ max-height: 500px; }

/* ---------- Callout / caution box ---------- */
.caution{
  background: #FFF8E6; border-left: 5px solid var(--yellow-dark); border-radius: var(--radius-sm);
  padding: 22px 26px; margin: 30px 0;
}
.caution p:last-child{ margin-bottom:0; }

/* ---------- Back to top ---------- */
.back-to-top{
  position: fixed; right: 24px; bottom: 24px; width:52px; height:52px; border-radius:50%;
  background: var(--forest); color:#fff; border:none; cursor:pointer; font-size:1.3rem;
  display:flex; align-items:center; justify-content:center; opacity:0; pointer-events:none;
  transform: translateY(12px); transition: opacity .25s ease, transform .25s ease, background .2s ease;
  box-shadow: var(--shadow-soft); z-index: 90;
}
.back-to-top.visible{ opacity:1; pointer-events:auto; transform: translateY(0); }
.back-to-top:hover{ background: var(--forest-deep); }

/* ---------- Back to home (education pages) ---------- */
.back-home-wrap{ text-align:center; padding: 40px 0 10px; }
.btn-home{ font-size:1.2rem; padding: 22px 48px; }

/* ---------- Footer ---------- */
footer{ background: var(--forest-deep); color: #E4EBE4; padding: 60px 0 30px; }
.footer-grid{ display:grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
footer h4{ color:#fff; font-size:1rem; font-family:"Inter",sans-serif; font-weight:700; }
footer a{ color:#C9D6C9; text-decoration:none; display:block; margin-bottom:10px; font-size:0.95rem; }
footer a:hover{ color:#fff; }
.fda-box{ border-top: 1px solid rgba(255,255,255,0.15); padding-top: 26px; font-size: 0.85rem; color:#B8C7D9; line-height:1.7; }

/* ---------- Utility ---------- */
.mt-lg{ margin-top: 40px; }
.tac{ text-align:center; }

/* ---------- Responsive ---------- */
@media (max-width: 960px){
  .hero-grid, .grid-2, .discount-box{ grid-template-columns: 1fr; }
  .strip-grid{ grid-template-columns: repeat(3,1fr); }
  .strip-item:nth-child(4){ border-left:none; }
  .grid-3{ grid-template-columns: 1fr 1fr; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .ingredient-band{ grid-template-columns: repeat(5,1fr); }
  .review-images{ grid-template-columns: 1fr; }
}
@media (max-width: 720px){
  .main-nav ul{
    position:absolute; top:100%; left:0; right:0; flex-direction:column; background: var(--cream);
    border-bottom:1px solid var(--line); padding: 14px 28px; gap:14px;
    display:none;
  }
  .main-nav.open ul{ display:flex; }
  .menu-toggle{ display:block; }
  .grid-3{ grid-template-columns: 1fr; }
  .strip-grid{ grid-template-columns: repeat(2,1fr); }
  .footer-grid{ grid-template-columns: 1fr; }
  .ingredient-band{ grid-template-columns: repeat(3,1fr); }
  body{ font-size:17px; }
}

/* focus visibility */
a:focus-visible, button:focus-visible{ outline: 3px solid var(--forest); outline-offset: 2px; }

.ingredient-band{grid-template-columns:repeat(6,1fr)}
.ingredient-icon{width:92px;height:92px;margin:0 auto;border-radius:50%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#0b5b8a,#38bdf8);color:#fff;font-weight:700;font-size:1.35rem;box-shadow:0 8px 20px rgba(11,91,138,.18)}
@media(max-width:900px){.ingredient-band{grid-template-columns:repeat(3,1fr)}}
@media(max-width:600px){.ingredient-band{grid-template-columns:repeat(2,1fr)}.ingredient-icon{width:72px;height:72px;font-size:1.1rem}}


/* ---------- FlowStrong compact offer cards ---------- */
.flow-pricing-section{background:#fff;padding-top:56px;padding-bottom:64px;}
.flow-pricing-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px;align-items:stretch;margin-top:32px;}
.flow-price-card{background:#eaf4fc;border:1px solid #cbd5df;border-radius:20px;overflow:hidden;box-shadow:0 8px 24px rgba(15,46,78,.10);text-align:center;position:relative;}
.flow-price-card.flow-popular{background:#fff5e8;border:2px solid #b89a18;transform:translateY(-18px);box-shadow:0 12px 32px rgba(15,46,78,.16);}
.flow-price-head{height:52px;background:#112f4c;color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;letter-spacing:.5px;}
.flow-popular .flow-price-head{height:62px;background:linear-gradient(180deg,#e1c782,#c6a75d);color:#08284a;font-size:22px;}
.flow-price-body{padding:22px 28px 24px;}
.flow-price-body h3{margin:0;color:#0c3154;font-size:38px;line-height:1.05;font-weight:900;}
.flow-supply{margin:8px 0 10px;color:#6f7d89;font-size:21px;font-weight:500;}
.flow-product-img{height:205px;display:flex;align-items:center;justify-content:center;position:relative;margin:2px 0 0;}
.flow-product-img img{max-width:88%;max-height:190px;width:auto;height:auto;object-fit:contain;}
.flow-product-large{height:220px;}
.flow-product-large img{max-width:100%;max-height:205px;}
.flow-price{display:flex;align-items:baseline;justify-content:center;gap:7px;margin:4px 0 12px;color:#0b2e50;}
.flow-price span{font-size:64px;line-height:1;font-weight:900;letter-spacing:-2px;}
.flow-price small{font-size:21px;color:#6d7780;}
.flow-features{list-style:none;margin:0 0 14px;padding:0;display:grid;gap:8px;}
.flow-features li{background:#fff;border-radius:8px;min-height:48px;display:flex;align-items:center;text-align:left;padding:7px 12px;color:#536b7f;font-size:17px;line-height:1.2;}
.flow-features i{font-style:normal;flex:0 0 29px;width:29px;height:29px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;margin-right:9px;color:#fff;font-size:22px;font-weight:800;background:#3e9e39;}
.flow-features .flow-x{background:#ef3e42;}
.flow-features .flow-gold{background:#e4bd2e;}
.flow-buy-btn{display:flex;align-items:center;justify-content:space-between;gap:10px;background:linear-gradient(180deg,#ffe63d,#ffd426);border:3px solid #f3c927;border-radius:18px;min-height:104px;padding:0 18px 0 28px;color:#071d36!important;font-size:38px;font-weight:900;letter-spacing:.5px;text-decoration:none;box-shadow:inset 0 -2px 0 rgba(255,255,255,.35);}
.flow-buy-btn span{width:70px;height:70px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:#031b47;color:#fff;font-size:34px;}
.flow-payments{font-size:10px;color:#667685;margin:9px 0 7px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.flow-total{font-size:25px;color:#667685;font-weight:500;}
.flow-total s{color:#6f7275;margin:0 3px;}
.flow-total strong{color:#0b3153;font-size:28px;}
.flow-shipping-badge{position:absolute;left:2px;top:20px;background:#ffe02e;color:#123c65;font-size:13px;line-height:1.0;font-weight:900;padding:6px 8px 5px;border-radius:3px;transform:rotate(-7deg);z-index:2;box-shadow:0 2px 4px rgba(0,0,0,.14);}
.flow-save-badge{position:absolute;right:1px;top:112px;width:61px;height:61px;border-radius:50%;display:flex;align-items:center;justify-content:center;text-align:center;background:#f22635;color:#fff;font-size:10px;line-height:1.05;font-weight:900;z-index:2;}
@media(max-width:1000px){.flow-pricing-grid{grid-template-columns:1fr;max-width:520px;margin-left:auto;margin-right:auto;gap:24px}.flow-price-card.flow-popular{transform:none}.flow-price-body{padding-left:24px;padding-right:24px}.flow-product-img{height:210px}.flow-price-body h3{font-size:34px}.flow-price span{font-size:58px}.flow-buy-btn{min-height:90px;font-size:32px}.flow-buy-btn span{width:62px;height:62px;font-size:29px}}
@media(max-width:520px){.flow-pricing-section{padding-left:10px;padding-right:10px}.flow-price-body{padding:18px 16px 20px}.flow-price-head{font-size:18px}.flow-popular .flow-price-head{font-size:20px}.flow-price-body h3{font-size:31px}.flow-supply{font-size:18px}.flow-price span{font-size:52px}.flow-features li{font-size:15px}.flow-buy-btn{font-size:29px;min-height:82px;padding-left:20px}.flow-buy-btn span{width:56px;height:56px;font-size:25px}.flow-product-img{height:185px}.flow-product-img img{max-height:175px}.flow-product-large{height:195px}}

/* Reference-site hero treatment: light blue/white background with deep navy copy. */
.hero h1, .hero h2, .hero h3 { color: #082D4E; }
.hero p { color: #53687A; }
.hero .eyebrow { color: #2679B0; }
.hero .btn-cta { color: #082D4E; }