/* ============================================================
   NEUROTYDE — styles.css
   Design: Medical Premium Dark (Deep Navy + Electric Cyan + Gold)
   Fonts: Montserrat (headings) + Open Sans (body)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700;800;900&family=Open+Sans:wght@400;500;600&display=swap');

/* ── CSS Variables ─────────────────────────────────────── */
:root {
  --navy:      #0B1120;
  --navy-2:    #0F172A;
  --navy-3:    #1E293B;
  --cyan:      #06B6D4;
  --cyan-2:    #22D3EE;
  --gold:      #F59E0B;
  --gold-2:    #FBBF24;
  --white:     #FFFFFF;
  --gray-100:  #F1F5F9;
  --gray-200:  #E2E8F0;
  --gray-400:  #94A3B8;
  --gray-600:  #475569;
  --green:     #10B981;
  --red:       #EF4444;
  --radius:    12px;
  --radius-lg: 20px;
  --shadow:    0 4px 24px rgba(6,182,212,.18);
  --shadow-lg: 0 8px 48px rgba(6,182,212,.25);
  --transition: .3s cubic-bezier(.4,0,.2,1);
}

/* ── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}
body {
  font-family: 'Open Sans', sans-serif;
  background: var(--navy);
  color: var(--white);
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}
* { -webkit-tap-highlight-color: transparent; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ── Utility ───────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.section-title {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: clamp(22px, 4vw, 38px);
  text-align: center;
  margin-bottom: 12px;
  line-height: 1.2;
}
.section-title span { color: var(--cyan); }
.section-sub {
  text-align: center;
  color: var(--gray-400);
  font-size: clamp(15px, 2vw, 17px);
  margin-bottom: 48px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 52px;
  padding: 14px 32px;
  border-radius: 50px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  border: none;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  text-align: center;
  line-height: 1.2;
}
.btn:hover   { transform: scale(1.05); box-shadow: var(--shadow-lg); }
.btn:active  { transform: scale(0.97); }
.btn-primary {
  background: linear-gradient(135deg, var(--cyan) 0%, #0891B2 100%);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(6,182,212,.4);
}
.btn-gold {
  background: linear-gradient(135deg, var(--gold) 0%, #D97706 100%);
  color: var(--navy);
  box-shadow: 0 4px 20px rgba(245,158,11,.4);
}
.btn-lg {
  font-size: 18px;
  min-height: 60px;
  padding: 16px 44px;
}
.btn-full { width: 100%; }

/* fade-in on scroll */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s ease, transform .7s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }
.fade-in-delay-1 { transition-delay: .1s; }
.fade-in-delay-2 { transition-delay: .2s; }
.fade-in-delay-3 { transition-delay: .3s; }
.fade-in-delay-4 { transition-delay: .4s; }

@media (prefers-reduced-motion: reduce) {
  .fade-in, .fade-in-delay-1, .fade-in-delay-2,
  .fade-in-delay-3, .fade-in-delay-4 {
    opacity: 1; transform: none; transition: none;
  }
}

/* ── 1. NAVIGATION ──────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(11,17,32,.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(6,182,212,.15);
  transition: background var(--transition), box-shadow var(--transition);
}
#navbar.scrolled {
  background: rgba(11,17,32,.97);
  box-shadow: 0 2px 24px rgba(0,0,0,.4);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 20px;
}
.nav-logo {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 22px;
  color: var(--cyan);
  letter-spacing: -0.5px;
  flex-shrink: 0;
}
.nav-logo span { color: var(--gold); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 14px;
  color: var(--gray-200);
  letter-spacing: .5px;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--cyan); }
.nav-cta { padding: 10px 24px; font-size: 14px; min-height: 40px; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 0;
  background: var(--navy-2);
  border-top: 1px solid rgba(6,182,212,.15);
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
}
.mobile-menu.open { max-height: 400px; }
.mobile-menu a {
  display: block;
  padding: 16px 24px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 15px;
  color: var(--gray-200);
  border-bottom: 1px solid rgba(255,255,255,.06);
  transition: color var(--transition), background var(--transition);
}
.mobile-menu a:hover { color: var(--cyan); background: rgba(6,182,212,.06); }
.mobile-menu .btn { margin: 16px 24px 20px; width: calc(100% - 48px); }

@media (max-width: 767px) {
  .nav-links { display: none; }
  .nav-cta.desktop-cta { display: none; }
  .hamburger { display: flex; }
  .mobile-menu { display: flex; }
}

/* ── 2. HERO ─────────────────────────────────────────────── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 100px 0 60px;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse 80% 60% at 60% 40%, rgba(6,182,212,.12) 0%, transparent 70%),
              radial-gradient(ellipse 60% 50% at 20% 80%, rgba(245,158,11,.07) 0%, transparent 60%),
              var(--navy);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
}
.hero-image-wrap {
  position: relative;
  display: flex;
  justify-content: center;
}
.hero-img-glow {
  position: absolute;
  inset: -20px;
  background: radial-gradient(circle, rgba(6,182,212,.3) 0%, transparent 70%);
  border-radius: 50%;
  animation: pulseGlow 3s ease-in-out infinite;
  pointer-events: none;
}
@keyframes pulseGlow {
  0%, 100% { opacity: .6; transform: scale(1); }
  50%       { opacity: 1;  transform: scale(1.08); }
}
.hero-bottle {
  width: 100%;
  max-width: 400px;
  animation: floatBottle 4s ease-in-out infinite;
  filter: drop-shadow(0 20px 60px rgba(6,182,212,.4));
  position: relative;
  z-index: 1;
}
@keyframes floatBottle {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50%       { transform: translateY(-20px) rotate(2deg); }
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(6,182,212,.12);
  border: 1px solid rgba(6,182,212,.35);
  border-radius: 50px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: .5px;
  margin-bottom: 20px;
  font-family: 'Montserrat', sans-serif;
}
.hero-badge::before { content: '⚡'; }
.hero h1 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: clamp(26px, 4.5vw, 52px);
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: -1px;
}
.hero h1 .highlight {
  background: linear-gradient(135deg, var(--cyan), var(--cyan-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: clamp(15px, 2vw, 17px);
  line-height: 1.75;
  color: var(--gray-400);
  margin-bottom: 28px;
}
.hero-stars {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}
.stars-icons { color: var(--gold); font-size: 18px; letter-spacing: 2px; }
.stars-text {
  font-size: 14px;
  color: var(--gray-400);
  font-weight: 600;
}
.hero-cta-wrap { display: flex; flex-direction: column; gap: 12px; }
.hero-cta-note {
  font-size: 13px;
  color: var(--gray-400);
  text-align: center;
}
.hero-cta-note span { color: var(--green); font-weight: 700; }

@media (max-width: 767px) {
  #hero { padding: 90px 0 50px; }
  .hero-grid { grid-template-columns: 1fr; gap: 30px; }
  .hero-image-wrap { order: -1; }
  .hero-bottle { max-width: 260px; }
}

/* ── 3. WHY CHOOSE ────────────────────────────────────── */
#why {
  padding: 80px 0;
  background: var(--navy-2);
}
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.why-card {
  background: var(--navy-3);
  border: 1px solid rgba(6,182,212,.15);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.why-card:hover {
  transform: translateY(-6px) rotate(1deg);
  box-shadow: var(--shadow-lg);
  border-color: rgba(6,182,212,.4);
}
.why-card img {
  width: 72px;
  height: 72px;
  object-fit: contain;
  margin: 0 auto 18px;
}
.why-card-title {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 14px;
  color: var(--cyan);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.why-card p { font-size: 14px; color: var(--gray-400); line-height: 1.65; }

@media (max-width: 991px) { .why-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px)  { .why-grid { grid-template-columns: 1fr; } }

/* ── 4. WHAT IS ───────────────────────────────────────── */
#what {
  padding: 80px 0;
  background: var(--navy);
}
.what-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.what-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.what-img-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(6,182,212,.15), transparent);
  z-index: 1;
  pointer-events: none;
}
.what-img-wrap img { width: 100%; border-radius: var(--radius-lg); }
.what-content h2 { text-align: left; margin-bottom: 20px; }
.what-content p {
  color: var(--gray-400);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 18px;
}
.what-content p strong { color: var(--white); }

@media (max-width: 767px) {
  .what-grid { grid-template-columns: 1fr; gap: 36px; }
  .what-content h2 { text-align: center; }
}

/* ── 5. HOW IT WORKS ─────────────────────────────────── */
#how {
  padding: 80px 0;
  background: var(--navy-2);
}
.accordion { display: flex; flex-direction: column; gap: 12px; max-width: 860px; margin: 0 auto; }
.accordion-item {
  background: var(--navy-3);
  border: 1px solid rgba(6,182,212,.18);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}
.accordion-item.open { border-color: var(--cyan); }
.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  min-height: 60px;
  user-select: none;
  gap: 12px;
}
.accordion-header-left {
  display: flex;
  align-items: center;
  gap: 14px;
}
.acc-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(6,182,212,.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.accordion-header h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: clamp(15px, 2vw, 17px);
  color: var(--white);
}
.accordion-chevron {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(6,182,212,.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition);
  color: var(--cyan);
  font-size: 14px;
}
.accordion-item.open .accordion-chevron { transform: rotate(180deg); }
.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease, padding .3s ease;
  padding: 0 24px;
}
.accordion-item.open .accordion-body { max-height: 500px; padding: 0 24px 24px; }
.accordion-body p {
  color: var(--gray-400);
  font-size: 15px;
  line-height: 1.8;
}

/* ── 6. REVIEWS ──────────────────────────────────────── */
#reviews {
  padding: 80px 0;
  background: var(--navy);
}
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: var(--navy-3);
  border: 1px solid rgba(6,182,212,.12);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition);
}
.review-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}
.review-card::before {
  content: '"';
  position: absolute;
  top: 16px;
  right: 24px;
  font-size: 80px;
  color: rgba(6,182,212,.1);
  font-family: Georgia, serif;
  line-height: 1;
}
.review-top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}
.review-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--cyan);
  flex-shrink: 0;
}
.review-name {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 15px;
}
.review-location { font-size: 13px; color: var(--gray-400); margin-top: 2px; }
.review-stars { color: var(--gold); font-size: 16px; letter-spacing: 2px; margin-bottom: 12px; }
.review-text { font-size: 15px; color: var(--gray-400); line-height: 1.75; }

@media (max-width: 767px) {
  .reviews-grid { grid-template-columns: 1fr; }
}
@media (min-width: 576px) and (max-width: 767px) {
  .reviews-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── 7 & 13. PRICING ─────────────────────────────────── */
.pricing-section {
  padding: 80px 0;
  background: var(--navy-2);
}
.countdown-wrap {
  text-align: center;
  margin-bottom: 40px;
}
.countdown-label {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 14px;
  color: var(--red);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.countdown-timer {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: rgba(239,68,68,.1);
  border: 1px solid rgba(239,68,68,.3);
  border-radius: var(--radius);
  padding: 16px 28px;
}
.cd-block { text-align: center; }
.cd-num {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: clamp(32px, 6vw, 54px);
  color: var(--red);
  line-height: 1;
  min-width: 60px;
}
.cd-label {
  font-size: 11px;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 4px;
}
.cd-sep {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 40px;
  color: var(--red);
  line-height: 1;
  animation: blink 1s step-end infinite;
}
@keyframes blink { 0%,100%{opacity:1;} 50%{opacity:0;} }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}
.pricing-card {
  background: var(--navy-3);
  border: 1px solid rgba(6,182,212,.18);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  text-align: center;
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition);
}
.pricing-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.pricing-card.popular {
  border-color: var(--cyan);
  background: linear-gradient(160deg, rgba(6,182,212,.12) 0%, var(--navy-3) 100%);
  transform: scale(1.03);
}
.pricing-card.popular:hover { transform: scale(1.03) translateY(-6px); }
.pricing-label {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 50px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 14px;
  background: rgba(6,182,212,.15);
  color: var(--cyan);
  border: 1px solid rgba(6,182,212,.3);
}
.pricing-card.popular .pricing-label {
  background: var(--cyan);
  color: var(--navy);
}
.pricing-bottles {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 4px;
}
.pricing-supply {
  font-size: 13px;
  color: var(--gray-400);
  margin-bottom: 16px;
}
.pricing-img {
  width: 120px;
  height: 140px;
  object-fit: contain;
  margin: 0 auto 16px;
}
.pricing-price-main {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: clamp(30px, 4vw, 42px);
  color: var(--cyan);
  line-height: 1;
}
.pricing-per { font-size: 14px; color: var(--gray-400); margin-bottom: 6px; }
.pricing-total {
  font-size: 15px;
  margin-bottom: 16px;
}
.pricing-total s { color: var(--gray-400); }
.pricing-total strong { color: var(--green); }
.pricing-badges { display: flex; flex-direction: column; gap: 6px; margin-bottom: 18px; }
.pricing-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: rgba(16,185,129,.15);
  border: 1px solid rgba(16,185,129,.3);
  border-radius: 50px;
  padding: 4px 14px;
  font-size: 12px;
  font-weight: 700;
  color: var(--green);
  font-family: 'Montserrat', sans-serif;
}
.pricing-card .btn { width: 100%; margin-bottom: 14px; }
.payment-icons img { max-width: 200px; margin: 0 auto; }
.stars-row { text-align: center; margin-top: 24px; }
.stars-row img { max-width: 200px; margin: 0 auto; }

@media (max-width: 767px) {
  .pricing-grid { grid-template-columns: 1fr; }
  .pricing-card.popular { transform: scale(1); }
  .pricing-card.popular:hover { transform: translateY(-4px); }
}
@media (min-width: 576px) and (max-width: 767px) {
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── 8. BONUS ─────────────────────────────────────────── */
#bonus {
  padding: 80px 0;
  background: var(--navy);
}
.bonus-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  max-width: 780px;
  margin: 0 auto;
}
.bonus-card {
  background: var(--navy-3);
  border: 1px solid rgba(245,158,11,.25);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}
.bonus-card:hover { transform: translateY(-5px); box-shadow: 0 8px 40px rgba(245,158,11,.2); }
.bonus-num {
  display: inline-block;
  background: var(--gold);
  color: var(--navy);
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 50px;
  margin-bottom: 14px;
  letter-spacing: 1px;
}
.bonus-card img {
  width: 160px;
  height: 180px;
  object-fit: contain;
  margin: 0 auto 16px;
}
.bonus-card h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 17px;
  color: var(--gold);
  line-height: 1.35;
}

@media (max-width: 575px) { .bonus-grid { grid-template-columns: 1fr; } }

/* ── 9. INGREDIENTS ──────────────────────────────────── */
#ingredients {
  padding: 80px 0;
  background: var(--navy-2);
}
.ingredients-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.ingredient-card {
  background: var(--navy-3);
  border: 1px solid rgba(6,182,212,.15);
  border-radius: var(--radius);
  padding: 22px 20px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  transition: border-color var(--transition), transform var(--transition);
}
.ingredient-card:hover {
  border-color: rgba(6,182,212,.4);
  transform: translateX(4px);
}
.ing-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(6,182,212,.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.ing-content h4 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 15px;
  color: var(--cyan);
  margin-bottom: 6px;
}
.ing-content p { font-size: 14px; color: var(--gray-400); line-height: 1.65; }

@media (max-width: 767px) { .ingredients-grid { grid-template-columns: 1fr; } }

/* ── 10. SCIENCE ──────────────────────────────────────── */
#science {
  padding: 80px 0;
  background: var(--navy);
}
.science-inner { max-width: 860px; margin: 0 auto; }
.science-block {
  background: var(--navy-3);
  border: 1px solid rgba(6,182,212,.12);
  border-radius: var(--radius);
  padding: 28px 24px;
  margin-bottom: 18px;
}
.science-block h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 17px;
  color: var(--cyan);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.science-block h3::before {
  content: '🔬';
  font-size: 18px;
}
.science-block p {
  font-size: 15px;
  color: var(--gray-400);
  line-height: 1.8;
  margin-bottom: 10px;
}
.science-block p:last-child { margin-bottom: 0; }
.science-cite {
  font-size: 13px;
  color: var(--gray-600);
  font-style: italic;
  border-top: 1px solid rgba(255,255,255,.06);
  padding-top: 10px;
  margin-top: 10px;
}

/* ── 11. GUARANTEE ───────────────────────────────────── */
#guarantee {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--navy-2) 0%, rgba(16,185,129,.06) 100%);
  border-top: 1px solid rgba(16,185,129,.2);
}
.guarantee-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 60px;
  align-items: center;
}
.guarantee-img {
  width: 220px;
  flex-shrink: 0;
}
.guarantee-content h2 { text-align: left; margin-bottom: 16px; }
.guarantee-content .section-sub { text-align: left; margin: 0 0 24px; }
.guarantee-points { display: flex; flex-direction: column; gap: 16px; }
.guarantee-point {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.gp-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(16,185,129,.15);
  border: 1px solid rgba(16,185,129,.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.gp-text h4 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 15px;
  color: var(--green);
  margin-bottom: 5px;
}
.gp-text p { font-size: 14px; color: var(--gray-400); line-height: 1.65; }

@media (max-width: 767px) {
  .guarantee-grid { grid-template-columns: 1fr; gap: 30px; }
  .guarantee-img { width: 160px; margin: 0 auto; }
  .guarantee-content h2 { text-align: center; }
  .guarantee-content .section-sub { text-align: center; }
}

/* ── 12. BENEFITS ───────────────────────────────────── */
#benefits {
  padding: 80px 0;
  background: var(--navy-2);
}
.benefits-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  max-width: 800px;
  margin: 0 auto;
}
.benefit-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--navy-3);
  border: 1px solid rgba(6,182,212,.12);
  border-radius: var(--radius);
  padding: 18px;
  transition: border-color var(--transition), transform var(--transition);
}
.benefit-item:hover { border-color: rgba(6,182,212,.4); transform: translateX(4px); }
.benefit-check {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(16,185,129,.15);
  border: 1px solid var(--green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  color: var(--green);
}
.benefit-item span {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 15px;
  line-height: 1.4;
}

@media (max-width: 575px) { .benefits-wrap { grid-template-columns: 1fr; } }

/* ── 14. FAQ ──────────────────────────────────────────── */
#faq {
  padding: 80px 0;
  background: var(--navy);
}

/* ── 15. FINAL CTA ───────────────────────────────────── */
#final-cta {
  padding: 80px 0 60px;
  background: radial-gradient(ellipse 80% 60% at 50% 50%, rgba(6,182,212,.15) 0%, transparent 70%),
              var(--navy-2);
  text-align: center;
  overflow: hidden;
  position: relative;
}
.final-cta-img {
  max-width: 320px;
  margin: 0 auto 30px;
  filter: drop-shadow(0 20px 50px rgba(6,182,212,.4));
  animation: floatBottle 4s ease-in-out infinite;
}
.final-cta-old-price {
  font-size: 20px;
  color: var(--gray-400);
  margin-bottom: 6px;
}
.final-cta-old-price s { text-decoration: line-through; }
.final-cta-price {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: clamp(28px, 5vw, 48px);
  color: var(--cyan);
  margin-bottom: 28px;
}
.final-cta h2 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: clamp(22px, 4vw, 38px);
  margin-bottom: 20px;
  line-height: 1.2;
}
.final-cta h2 span { color: var(--gold); }

/* ── 16. FOOTER ───────────────────────────────────────── */
footer {
  background: #060B16;
  border-top: 1px solid rgba(6,182,212,.12);
  padding: 48px 0 24px;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}
.footer-logo {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 24px;
  color: var(--cyan);
}
.footer-logo span { color: var(--gold); }
.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 24px;
}
.footer-links a {
  font-size: 14px;
  color: var(--gray-400);
  transition: color var(--transition);
  font-weight: 500;
}
.footer-links a:hover { color: var(--cyan); }
.footer-social {
  display: flex;
  gap: 14px;
  justify-content: center;
}
.social-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--navy-3);
  border: 1px solid rgba(6,182,212,.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
  cursor: pointer;
}
.social-btn:hover {
  background: rgba(6,182,212,.15);
  border-color: var(--cyan);
  transform: translateY(-3px);
}
.footer-disclaimer {
  font-size: 12px;
  color: var(--gray-600);
  max-width: 760px;
  line-height: 1.7;
  text-align: center;
}
.footer-copy {
  font-size: 13px;
  color: var(--gray-600);
}

/* ── PURCHASE POPUP ──────────────────────────────────── */
#purchase-popup {
  position: fixed;
  bottom: 24px;
  left: 24px;
  z-index: 9990;
  background: var(--navy-3);
  border: 1px solid rgba(16,185,129,.4);
  border-radius: var(--radius);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 320px;
  box-shadow: 0 8px 32px rgba(0,0,0,.5);
  transform: translateX(-120%);
  transition: transform .5s cubic-bezier(.34,1.56,.64,1);
}
#purchase-popup.show { transform: translateX(0); }
.popup-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--cyan-2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.popup-text { flex: 1; }
.popup-name {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 14px;
  color: var(--white);
}
.popup-msg { font-size: 12px; color: var(--gray-400); margin-top: 2px; }
.popup-close {
  background: none;
  border: none;
  color: var(--gray-400);
  font-size: 16px;
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
  transition: color var(--transition);
}
.popup-close:hover { color: var(--white); }

@media (max-width: 480px) {
  #purchase-popup {
    left: 12px;
    right: 12px;
    bottom: 12px;
    max-width: calc(100vw - 24px);
  }
}

/* ── EXIT POPUP ───────────────────────────────────────── */
#exit-popup {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0,0,0,.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s;
  padding: 20px;
}
#exit-popup.show { opacity: 1; pointer-events: all; }
.exit-popup-box {
  background: var(--navy-2);
  border: 1px solid var(--cyan);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  max-width: 480px;
  width: 100%;
  text-align: center;
  position: relative;
  box-shadow: 0 20px 80px rgba(0,0,0,.6);
}
.exit-popup-close {
  position: absolute;
  top: 14px;
  right: 16px;
  background: none;
  border: none;
  color: var(--gray-400);
  font-size: 22px;
  cursor: pointer;
  transition: color var(--transition);
  line-height: 1;
}
.exit-popup-close:hover { color: var(--white); }
.exit-popup-emoji { font-size: 48px; margin-bottom: 16px; }
.exit-popup-box h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: clamp(18px, 4vw, 24px);
  margin-bottom: 12px;
  line-height: 1.2;
}
.exit-popup-box h3 span { color: var(--gold); }
.exit-popup-box p { font-size: 15px; color: var(--gray-400); margin-bottom: 24px; line-height: 1.7; }

@media (max-width: 480px) {
  .exit-popup-box { padding: 28px 20px; }
}

/* ── SCROLL-TO-TOP ───────────────────────────────────── */
#scroll-top {
  position: fixed;
  bottom: 28px;
  right: 24px;
  z-index: 9000;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), #0891B2);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  box-shadow: 0 4px 20px rgba(6,182,212,.4);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity var(--transition), transform var(--transition);
  color: var(--white);
}
#scroll-top.show { opacity: 1; pointer-events: all; transform: translateY(0); }
#scroll-top:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
#scroll-top:active { transform: scale(0.95); }

/* ── SECTION DIVIDER ─────────────────────────────────── */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(6,182,212,.3), transparent);
}