/* ============================================================
   NuNerve (nunerrve.com) — site stylesheet
   Prefix: nn-
   ============================================================ */

:root{
  --nn-primary:#1659c7;
  --nn-primary-dark:#0b3a8a;
  --nn-primary-light:#eaf1ff;
  --nn-cyan:#1fb6d6;
  --nn-gold:#e3a435;
  --nn-gold-dark:#b9811f;
  --nn-text:#16202e;
  --nn-text-soft:#3c4a5c;
  --nn-bg:#ffffff;
  --nn-bg-alt:#f4f8ff;
  --nn-border:#dce6f5;
  --nn-success:#1f9d55;
  --nn-radius:16px;
  --nn-shadow:0 10px 30px rgba(11,58,138,0.10);
  --nn-max:1180px;
  --nn-font-body: 'Inter', -apple-system, Segoe UI, Roboto, sans-serif;
  --nn-font-head: 'Poppins', -apple-system, Segoe UI, Roboto, sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
html,body{max-width:100%;overflow-x:hidden;}
body{
  margin:0;
  font-family:var(--nn-font-body);
  color:var(--nn-text);
  font-size:20px;
  line-height:1.65;
  background:var(--nn-bg);
}
h1,h2,h3,h4{
  font-family:var(--nn-font-head);
  color:var(--nn-primary-dark);
  line-height:1.25;
  margin:0 0 16px;
  font-weight:700;
}
h1{font-size:32px;}
h2{font-size:28px;}
h3{font-size:22px;}
p{margin:0 0 16px;color:var(--nn-text);}
a{color:var(--nn-primary);text-decoration:none;}
a:hover{text-decoration:underline;}
img{max-width:100%;height:auto;display:block;}
ul{padding-left:22px;}
.nn-container{max-width:var(--nn-max);margin:0 auto;padding:0 20px;}
.nn-section{padding:64px 0;}
.nn-section-alt{background:var(--nn-bg-alt);}
.nn-center{text-align:center;}
.nn-kicker{
  display:inline-block;color:var(--nn-primary);font-weight:700;letter-spacing:.06em;
  text-transform:uppercase;font-size:14px;margin-bottom:10px;
}
.nn-lead{font-size:21px;color:var(--nn-text-soft);max-width:760px;margin:0 auto 28px;}

/* ---------- Buttons ---------- */
.nn-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:linear-gradient(135deg,var(--nn-gold),var(--nn-gold-dark));
  color:#241a00;font-weight:800;font-family:var(--nn-font-head);
  padding:16px 34px;border-radius:50px;border:none;cursor:pointer;
  font-size:19px;box-shadow:0 10px 24px rgba(227,164,53,.4);
  transition:transform .15s ease, box-shadow .15s ease;
}
.nn-btn:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(227,164,53,.5);text-decoration:none;}
.nn-btn-outline{
  background:#fff;color:var(--nn-primary);border:2px solid var(--nn-primary);
  padding:14px 30px;border-radius:50px;font-weight:700;display:inline-block;
}
.nn-secured{
  display:flex;align-items:center;gap:8px;justify-content:center;
  margin-top:12px;font-size:15px;color:var(--nn-text-soft);
}
.nn-secured svg{width:18px;height:18px;flex:none;}

/* ---------- Header ---------- */
.nn-header{
  position:sticky;top:0;z-index:999;background:#fff;
  border-bottom:1px solid var(--nn-border);
}
.nn-header-inner{
  max-width:var(--nn-max);margin:0 auto;padding:14px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.nn-logo{display:flex;align-items:center;gap:10px;font-family:var(--nn-font-head);font-weight:800;font-size:22px;color:var(--nn-primary-dark);}
.nn-logo span{color:var(--nn-cyan);}
.nn-nav{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.nn-nav a{color:var(--nn-text);font-weight:600;font-size:14.5px;white-space:nowrap;}
.nn-nav a:hover{color:var(--nn-primary);text-decoration:none;}
.nn-header-cta{display:flex;align-items:center;gap:16px;flex:none;}
.nn-header-cta .nn-btn{padding:11px 22px;font-size:15px;}
.nn-burger{display:none;background:none;border:none;cursor:pointer;padding:6px;}
.nn-burger span{display:block;width:26px;height:3px;background:var(--nn-primary-dark);margin:5px 0;border-radius:2px;}

@media(max-width:1300px) and (min-width:981px){
  .nn-nav{gap:12px;}
  .nn-nav a{font-size:13.5px;}
}
@media(max-width:980px){
  .nn-nav{
    position:fixed;top:0;right:-100%;height:100vh;width:78%;max-width:320px;
    background:#fff;flex-direction:column;align-items:flex-start;
    padding:90px 28px 28px;gap:22px;transition:right .25s ease;
    box-shadow:-10px 0 30px rgba(0,0,0,.15);overflow-y:auto;
  }
  .nn-nav.nn-open{right:0;}
  .nn-nav a{font-size:18px;}
  .nn-burger{display:block;}
  .nn-header-cta .nn-btn-text{display:none;}
}

/* ---------- Hero ---------- */
.nn-hero{
  background:#fff;
  padding:54px 0 40px;
  position:relative;
}
.nn-hero-grid{
  display:grid;grid-template-columns:1.1fr 0.9fr;gap:48px;align-items:center;
}
.nn-hero-badge{
  display:inline-flex;align-items:center;gap:8px;background:var(--nn-primary-light);
  color:var(--nn-primary-dark);padding:8px 16px;border-radius:50px;font-weight:700;
  font-size:14px;margin-bottom:18px;
}
.nn-hero h1{font-size:34px;margin-bottom:14px;}
.nn-hero h1 .nn-accent{color:var(--nn-cyan);}
.nn-hero-lead{font-size:20px;color:var(--nn-text-soft);margin-bottom:20px;}
.nn-hero-list{list-style:none;padding:0;margin:0 0 22px;display:grid;gap:10px;}
.nn-hero-list li{display:flex;gap:10px;align-items:flex-start;font-weight:600;color:var(--nn-text);}
.nn-hero-list .nn-check{
  flex:none;width:22px;height:22px;border-radius:50%;background:var(--nn-success);
  display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.nn-hero-list .nn-check svg{width:12px;height:12px;}
.nn-hero-numbered{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:0 0 20px;}
.nn-numbox{
  background:var(--nn-bg-alt);border:1px solid var(--nn-border);border-radius:12px;
  padding:14px 16px;display:flex;gap:10px;align-items:flex-start;
}
.nn-numbox .nn-num{
  flex:none;width:28px;height:28px;border-radius:50%;background:var(--nn-primary);
  color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:14px;
}
.nn-numbox span.nn-numtext{font-size:15px;font-weight:600;color:var(--nn-text);}
.nn-hero-table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:16px;}
.nn-hero-table th,.nn-hero-table td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--nn-border);}
.nn-hero-table th{color:var(--nn-primary-dark);font-family:var(--nn-font-head);}
.nn-hero-cta-wrap{margin-top:10px;}
.nn-hero-right{position:relative;}
.nn-hero-right img.nn-bottle-img{max-width:92%;margin:0 auto;filter:drop-shadow(0 25px 30px rgba(11,58,138,.18));}
.nn-hero-visual{margin-top:18px;}

@media(max-width:980px){
  .nn-hero-grid{grid-template-columns:1fr;}
  .nn-hero-right{order:-1;max-width:420px;margin:0 auto;}
}

/* Neuron pulse visual (dynamic, niche-specific) */
.nn-neuron-wrap{width:100%;max-width:460px;margin:0 auto;}
.nn-neuron-wrap svg{width:100%;height:auto;display:block;}
.nn-pulse{animation:nnPulse 2.6s ease-in-out infinite;}
.nn-pulse-delay{animation-delay:.9s;}
.nn-pulse-delay2{animation-delay:1.7s;}
@keyframes nnPulse{
  0%{opacity:.25;r:4;}
  50%{opacity:1;r:7;}
  100%{opacity:.25;r:4;}
}
.nn-line-flow{stroke-dasharray:6 10;animation:nnFlow 3.2s linear infinite;}
@keyframes nnFlow{to{stroke-dashoffset:-160;}}
@media(prefers-reduced-motion:reduce){
  .nn-pulse,.nn-line-flow{animation:none;}
}

/* ---------- Why choose / trust strip ---------- */
.nn-trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:36px;}
.nn-trust-card{
  background:#fff;border:1px solid var(--nn-border);border-radius:var(--nn-radius);
  padding:26px 20px;text-align:center;box-shadow:var(--nn-shadow);
}
.nn-trust-card img{height:60px;width:auto;margin:0 auto 14px;object-fit:contain;}
.nn-trust-card h3{font-size:18px;margin-bottom:6px;}
.nn-trust-card p{font-size:15px;margin:0;color:var(--nn-text-soft);}
@media(max-width:900px){.nn-trust-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:560px){.nn-trust-grid{grid-template-columns:1fr;}}

/* ---------- Wave CTA banner ---------- */
.nn-wave-cta{
  background:linear-gradient(120deg,var(--nn-primary),var(--nn-cyan));
  color:#fff;padding:46px 0;position:relative;overflow:hidden;
}
.nn-wave-cta h2{color:#fff;margin-bottom:10px;}
.nn-wave-cta p{color:#eaf6ff;margin-bottom:20px;}
.nn-wave-cta .nn-btn{background:#fff;color:var(--nn-primary-dark);box-shadow:0 10px 24px rgba(0,0,0,.18);}
.nn-wave-top{display:block;width:100%;margin-top:-2px;}

/* ---------- What is section / two column ---------- */
.nn-twocol{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center;}
.nn-twocol img{border-radius:var(--nn-radius);box-shadow:var(--nn-shadow);}
@media(max-width:900px){.nn-twocol{grid-template-columns:1fr;}}

/* ---------- Pricing ---------- */
.nn-stock-note{
  text-align:center;background:var(--nn-primary-light);color:var(--nn-primary-dark);
  font-weight:700;padding:10px 16px;border-radius:50px;display:inline-block;margin:0 auto 28px;
}
.nn-stock-wrap{text-align:center;}
.nn-pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;align-items:stretch;}
.nn-price-card{
  background:#fff;border:2px solid var(--nn-border);border-radius:var(--nn-radius);
  padding:28px 22px;text-align:center;position:relative;display:flex;flex-direction:column;
  box-shadow:var(--nn-shadow);
}
.nn-price-card.nn-popular{border-color:var(--nn-gold);transform:scale(1.04);}
.nn-badge-pop{
  position:absolute;top:-16px;left:50%;transform:translateX(-50%);
  background:var(--nn-gold);color:#241a00;font-weight:800;font-size:13px;
  padding:6px 16px;border-radius:50px;white-space:nowrap;
}
.nn-price-card img.nn-price-bottle{height:150px;width:auto;margin:10px auto 16px;object-fit:contain;}
.nn-price-card h3{margin-bottom:4px;}
.nn-save{color:var(--nn-success);font-weight:700;font-size:15px;margin-bottom:10px;}
.nn-price-row{display:flex;align-items:baseline;justify-content:center;gap:10px;margin-bottom:4px;}
.nn-price-old{text-decoration:line-through;color:#9aa7b8;font-size:17px;}
.nn-price-new{font-size:34px;font-weight:800;color:var(--nn-primary-dark);font-family:var(--nn-font-head);}
.nn-price-per{color:var(--nn-text-soft);font-size:15px;margin-bottom:14px;}
.nn-price-total{font-size:15px;color:var(--nn-text-soft);margin-bottom:16px;}
.nn-price-ship{font-size:13px;color:var(--nn-success);font-weight:700;margin-bottom:16px;}
.nn-price-card .nn-btn{width:100%;margin-top:auto;}
.nn-pay-badges{display:flex;justify-content:center;gap:10px;margin-top:16px;flex-wrap:wrap;}
.nn-pay-badges span{font-size:12px;background:var(--nn-bg-alt);padding:4px 10px;border-radius:6px;color:var(--nn-text-soft);font-weight:700;}
@media(max-width:900px){.nn-pricing-grid{grid-template-columns:1fr;}.nn-price-card.nn-popular{transform:none;}}

/* ---------- Guarantee ---------- */
.nn-guarantee{display:grid;grid-template-columns:260px 1fr;gap:40px;align-items:center;}
.nn-guarantee img{max-width:220px;margin:0 auto;}
@media(max-width:800px){.nn-guarantee{grid-template-columns:1fr;text-align:center;}.nn-guarantee img{margin:0 auto 20px;}}

/* ---------- Shipping banner ---------- */
.nn-shipping{background:var(--nn-primary-light);padding:30px 0;}
.nn-ship-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;text-align:center;}
.nn-ship-grid div h4{margin-bottom:4px;color:var(--nn-primary-dark);font-size:17px;}
.nn-ship-grid div p{margin:0;color:var(--nn-text-soft);font-size:15px;}
@media(max-width:800px){.nn-ship-grid{grid-template-columns:1fr;}}

/* ---------- Story ---------- */
.nn-story{max-width:820px;margin:0 auto;}

/* ---------- Ingredients ---------- */
.nn-ing-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.nn-ing-card{
  background:#fff;border:1px solid var(--nn-border);border-radius:var(--nn-radius);
  padding:24px;box-shadow:var(--nn-shadow);
}
.nn-ing-card h3{font-size:19px;margin-bottom:8px;display:flex;align-items:center;gap:10px;}
.nn-ing-num{
  flex:none;width:30px;height:30px;border-radius:50%;background:var(--nn-cyan);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;
}
.nn-ing-card p{font-size:16px;color:var(--nn-text-soft);margin-bottom:0;}
@media(max-width:800px){.nn-ing-grid{grid-template-columns:1fr;}}

/* ---------- Benefits ---------- */
.nn-benefit-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.nn-benefit-card{
  background:#fff;border:1px solid var(--nn-border);border-radius:var(--nn-radius);
  padding:26px;box-shadow:var(--nn-shadow);
}
.nn-benefit-card h3{font-size:20px;margin-bottom:8px;}
.nn-benefit-card .nn-key-ing{font-size:14px;color:var(--nn-primary);font-weight:700;margin-bottom:10px;display:block;}
@media(max-width:800px){.nn-benefit-grid{grid-template-columns:1fr;}}

/* ---------- Reviews ---------- */
.nn-review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.nn-review-card{
  background:#fff;border:1px solid var(--nn-border);border-radius:var(--nn-radius);
  padding:24px;box-shadow:var(--nn-shadow);
}
.nn-review-stars{color:var(--nn-gold);font-size:17px;margin-bottom:10px;}
.nn-review-name{font-weight:800;color:var(--nn-primary-dark);margin-top:10px;font-size:15px;}
.nn-review-verified{font-size:12px;color:var(--nn-success);font-weight:700;}
@media(max-width:900px){.nn-review-grid{grid-template-columns:1fr;}}

/* ---------- FAQ ---------- */
.nn-faq{max-width:840px;margin:0 auto;}
.nn-faq-item{border-bottom:1px solid var(--nn-border);padding:18px 0;}
.nn-faq-q{
  display:flex;align-items:center;justify-content:space-between;cursor:pointer;
  font-family:var(--nn-font-head);font-weight:700;font-size:18px;color:var(--nn-primary-dark);gap:16px;
}
.nn-faq-q::after{content:'+';font-size:26px;color:var(--nn-primary);flex:none;}
.nn-faq-item.nn-active .nn-faq-q::after{content:'−';}
.nn-faq-a{display:none;padding-top:12px;color:var(--nn-text-soft);}
.nn-faq-item.nn-active .nn-faq-a{display:block;}

/* ---------- Final CTA ---------- */
.nn-final-cta{
  background:linear-gradient(120deg,var(--nn-primary-dark),var(--nn-primary));
  color:#fff;text-align:center;padding:60px 0;
}
.nn-final-cta h2{color:#fff;}
.nn-final-cta p{color:#eaf6ff;}

/* ---------- Label section ---------- */
.nn-label{display:grid;grid-template-columns:260px 1fr;gap:40px;align-items:center;}
.nn-label img{max-width:220px;margin:0 auto;}
@media(max-width:800px){.nn-label{grid-template-columns:1fr;text-align:center;}.nn-label img{margin:0 auto 20px;}}

/* ---------- References ---------- */
.nn-refs ul{list-style:none;padding:0;display:grid;gap:10px;}
.nn-refs li{font-size:15px;color:var(--nn-text-soft);}

/* ---------- Footer ---------- */
.nn-footer{background:#0b3a8a;color:#dce9ff;padding:50px 0 24px;}
.nn-footer a{color:#dce9ff;}
.nn-footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px;}
.nn-footer h4{color:#fff;font-size:16px;margin-bottom:14px;}
.nn-footer ul{list-style:none;padding:0;margin:0;display:grid;gap:8px;font-size:14px;}
.nn-footer-logo{font-family:var(--nn-font-head);font-weight:800;font-size:22px;color:#fff;margin-bottom:10px;}
.nn-footer-logo span{color:var(--nn-cyan);}
.nn-footer-disc{font-size:13px;color:#aebfe0;line-height:1.6;}
.nn-footer-bottom{border-top:1px solid rgba(255,255,255,.15);padding-top:20px;font-size:13px;color:#aebfe0;text-align:center;}
@media(max-width:800px){.nn-footer-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:480px){.nn-footer-grid{grid-template-columns:1fr;}}

/* ---------- Sticky order bar (mobile) ---------- */
.nn-sticky-order{
  position:fixed;left:0;right:0;bottom:0;z-index:998;background:#fff;
  border-top:1px solid var(--nn-border);padding:12px 16px;display:none;
  box-shadow:0 -6px 20px rgba(0,0,0,.08);
}
.nn-sticky-order .nn-btn{width:100%;}
@media(max-width:980px){.nn-sticky-order{display:block;}body{padding-bottom:76px;}}

/* ---------- Blog ---------- */
.nn-blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.nn-blog-card{background:#fff;border:1px solid var(--nn-border);border-radius:var(--nn-radius);overflow:hidden;box-shadow:var(--nn-shadow);display:flex;flex-direction:column;}
.nn-blog-card img{width:100%;height:190px;object-fit:cover;}
.nn-blog-card .nn-blog-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.nn-blog-tag{color:var(--nn-primary);font-weight:700;font-size:13px;text-transform:uppercase;margin-bottom:8px;}
.nn-blog-card h3{font-size:18px;margin-bottom:10px;}
.nn-blog-card p{font-size:15px;color:var(--nn-text-soft);flex:1;}
@media(max-width:900px){.nn-blog-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:600px){.nn-blog-grid{grid-template-columns:1fr;}}

.nn-article{max-width:800px;margin:0 auto;}
.nn-article h2{margin-top:36px;}
.nn-article h3{margin-top:24px;}
.nn-article .nn-article-hero{border-radius:var(--nn-radius);margin-bottom:26px;box-shadow:var(--nn-shadow);width:100%;height:320px;object-fit:cover;}
.nn-breadcrumb{font-size:14px;color:var(--nn-text-soft);margin-bottom:18px;}
.nn-breadcrumb a{color:var(--nn-primary);}
.nn-related{margin-top:40px;padding-top:30px;border-top:1px solid var(--nn-border);}
.nn-related ul{list-style:none;padding:0;display:grid;gap:10px;}

/* ---------- Misc content image rules (bug-fix: don't blanket-stretch all images) ---------- */
.nn-section img:not(.nn-badge):not(.nn-icon){height:auto;}
.nn-icon{width:56px;height:56px;}
.nn-badge{height:60px;width:auto;}

/* Lifestyle / content photo aspect ratio guard */
.nn-photo{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--nn-radius);}

.nn-link-kw{border-bottom:1px dashed var(--nn-primary);font-weight:700;}