/* ===== NEUROZEN STYLES.CSS ===== */
/* Design: Medical Premium - Navy/Teal/Gold */
/* Fonts: Montserrat (headings) + Open Sans (body) */

/* ===== CSS VARIABLES ===== */
:root {
  --primary: #0a3a6e;
  --primary-light: #1a5298;
  --accent: #00b4d8;
  --accent-dark: #0096b7;
  --gold: #d4a017;
  --gold-light: #f0c040;
  --green: #16a34a;
  --danger: #dc2626;
  --white: #ffffff;
  --bg: #f0f7ff;
  --bg-alt: #e8f4fd;
  --bg-dark: #071e3d;
  --text: #1a2a3a;
  --text-light: #4a5568;
  --text-muted: #718096;
  --border: #c7dff7;
  --shadow: 0 4px 24px rgba(10,58,110,0.12);
  --shadow-lg: 0 12px 48px rgba(10,58,110,0.18);
  --radius: 16px;
  --radius-sm: 8px;
  --radius-lg: 24px;
  --gradient: linear-gradient(135deg, #0a3a6e 0%, #00b4d8 100%);
  --gradient-gold: linear-gradient(135deg, #d4a017 0%, #f0c040 100%);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* ===== RESET & BASE ===== */
*, *::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;
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
  line-height: 1.7;
  -webkit-tap-highlight-color: transparent;
}

* { -webkit-tap-highlight-color: transparent; }

img { max-width: 100%; height: auto; display: block; }

a { text-decoration: none; color: inherit; }

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  line-height: 1.25;
  color: var(--primary);
}

h1 { font-size: clamp(26px, 6vw, 52px); font-weight: 900; }
h2 { font-size: clamp(22px, 4vw, 38px); font-weight: 800; }
h3 { font-size: clamp(18px, 3vw, 24px); font-weight: 700; }

p { font-size: 16px; line-height: 1.8; color: var(--text-light); }

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== UTILITIES ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-pad { padding: 80px 0; }

.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header h2 { margin-bottom: 12px; }
.section-sub { font-size: 17px; color: var(--text-muted); max-width: 600px; margin: 0 auto; }

.section-tag {
  display: inline-block;
  background: var(--gradient);
  color: white;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 5px 16px;
  border-radius: 50px;
  margin-bottom: 14px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 16px;
  padding: 16px 32px;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  min-height: 54px;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.15);
  opacity: 0;
  transition: opacity 0.2s;
}
.btn:hover::after { opacity: 1; }
.btn:hover { transform: scale(1.05); box-shadow: 0 8px 32px rgba(0,180,216,0.35); }
.btn:active { transform: scale(0.98); }

.btn-primary {
  background: var(--gradient);
  color: white;
  box-shadow: 0 4px 20px rgba(0,180,216,0.25);
}
.btn-hero {
  background: var(--gradient-gold);
  color: var(--primary);
  font-size: 18px;
  padding: 20px 40px;
  box-shadow: 0 6px 28px rgba(212,160,23,0.4);
  width: 100%;
  max-width: 460px;
}
.btn-nav {
  background: var(--gradient);
  color: white;
  padding: 12px 28px;
  font-size: 14px;
  min-height: 44px;
}
.btn-price {
  background: var(--gradient);
  color: white;
  width: 100%;
  font-size: 15px;
  padding: 15px 20px;
}
.btn-price-pop { background: var(--gradient-gold); color: var(--primary); }
.btn-final {
  background: var(--gradient-gold);
  color: var(--primary);
  font-size: 18px;
  padding: 22px 48px;
  box-shadow: 0 8px 36px rgba(212,160,23,0.5);
  width: 100%;
  max-width: 480px;
  font-size: 17px;
}
.btn-arrow { font-size: 20px; }

.btn-exit {
  background: var(--gradient-gold);
  color: var(--primary);
  width: 100%;
  font-size: 16px;
  padding: 16px;
}

.atc-img { width: 24px; height: 24px; object-fit: contain; }
.cards-img { width: 100%; max-width: 200px; margin: 10px auto 0; opacity: 0.8; }

/* ===== ANIMATIONS ===== */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-left.visible { opacity: 1; transform: translateX(0); }
.fade-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-right.visible { opacity: 1; transform: translateX(0); }

@media (prefers-reduced-motion: reduce) {
  .fade-up, .fade-left, .fade-right {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.navbar.scrolled {
  box-shadow: var(--shadow);
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
  gap: 16px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-img { width: 36px; height: 36px; object-fit: contain; border-radius: 8px; }
.logo-text {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 22px;
  color: var(--primary);
}
.logo-accent { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 14px;
  color: var(--text);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover { color: var(--accent); background: var(--bg); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: var(--primary);
  border-radius: 2px;
  transition: all 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10,58,110,0.4);
  z-index: 998;
}
.nav-overlay.active { display: block; }

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  background: linear-gradient(160deg, #071e3d 0%, #0a3a6e 50%, #00b4d8 100%);
  padding-top: 100px;
  padding-bottom: 60px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
.particle {
  position: absolute;
  border-radius: 50%;
  background: rgba(0,180,216,0.15);
  animation: floatParticle linear infinite;
}

@keyframes floatParticle {
  0% { transform: translateY(0) rotate(0deg); opacity: 0.5; }
  50% { opacity: 1; }
  100% { transform: translateY(-100vh) rotate(360deg); opacity: 0; }
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
  position: relative;
  z-index: 2;
}

.hero-image-wrap {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-glow {
  position: absolute;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(0,180,216,0.35) 0%, transparent 70%);
  border-radius: 50%;
  animation: glowPulse 3s ease-in-out infinite;
}
@keyframes glowPulse {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.15); opacity: 1; }
}
.hero-bottle {
  position: relative;
  z-index: 2;
  max-height: 460px;
  width: auto;
  max-width: 100%;
  filter: drop-shadow(0 20px 60px rgba(0,180,216,0.4));
  animation: bottleFloat 4s ease-in-out infinite;
}
@keyframes bottleFloat {
  0%, 100% { transform: translateY(0px) rotate(-2deg); }
  50% { transform: translateY(-20px) rotate(2deg); }
}
.hero-badge-float {
  position: absolute;
  top: 5%;
  right: 5%;
  background: var(--gradient-gold);
  color: var(--primary);
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 12px;
  padding: 8px 16px;
  border-radius: 50px;
  z-index: 3;
  animation: badgePop 2s ease-in-out infinite;
  box-shadow: 0 4px 16px rgba(212,160,23,0.4);
}
@keyframes badgePop {
  0%, 100% { transform: scale(1) rotate(-3deg); }
  50% { transform: scale(1.08) rotate(3deg); }
}

.hero-content { color: white; }
.hero-eyebrow {
  display: inline-block;
  background: rgba(0,180,216,0.25);
  border: 1px solid rgba(0,180,216,0.5);
  color: var(--accent);
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 20px;
  backdrop-filter: blur(8px);
}
.hero-h1 {
  color: white;
  margin-bottom: 24px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.hero-h1 .gradient-text {
  background: linear-gradient(135deg, #00b4d8 0%, #f0c040 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  color: rgba(255,255,255,0.85);
  margin-bottom: 16px;
  font-size: 16px;
}
.hero-stars {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  color: var(--gold-light);
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 15px;
}
.hero-stars span { color: rgba(255,255,255,0.7); font-weight: 400; font-size: 14px; }
.hero-guarantee {
  color: rgba(255,255,255,0.65);
  font-size: 14px;
  margin-top: 14px;
  text-align: center;
  max-width: 460px;
}

.hero-wave {
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  z-index: 3;
}
.hero-wave svg { width: 100%; display: block; }

/* ===== WHY CHOOSE ===== */
.why-section { background: var(--bg); }
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.why-card {
  background: white;
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  border: 1.5px solid var(--border);
  transition: all var(--transition);
  cursor: default;
}
.why-card:hover {
  transform: scale(1.05) rotate(1deg);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}
.why-icon-wrap {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  overflow: hidden;
}
.why-icon-wrap img { width: 56px; height: 56px; object-fit: contain; }
.why-badge {
  display: inline-block;
  background: var(--gradient);
  color: white;
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 10px;
  letter-spacing: 1px;
  padding: 4px 12px;
  border-radius: 50px;
  margin-bottom: 12px;
}
.why-badge-green { background: linear-gradient(135deg, #16a34a, #22c55e); }
.why-badge-gold { background: var(--gradient-gold); color: var(--primary); }
.why-badge-blue { background: linear-gradient(135deg, #1a5298, #3b82f6); }
.why-card h3 { font-size: 16px; margin-bottom: 10px; }
.why-card p { font-size: 14px; line-height: 1.7; }

/* ===== WHAT IS ===== */
.what-section { background: white; }
.what-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: center;
}
.what-image {
  position: relative;
  display: flex;
  justify-content: center;
}
.what-img-glow {
  position: absolute;
  inset: -30px;
  background: radial-gradient(circle at center, rgba(0,180,216,0.15) 0%, transparent 70%);
  border-radius: 50%;
}
.what-image img {
  max-height: 460px;
  width: auto;
  filter: drop-shadow(0 16px 48px rgba(10,58,110,0.18));
  position: relative;
  z-index: 2;
  border-radius: var(--radius);
}
.what-content .section-tag { display: inline-block; margin-bottom: 14px; }
.what-content h2 { margin-bottom: 20px; }
.what-content p { margin-bottom: 16px; }

/* ===== HOW IT WORKS ===== */
.how-section { background: var(--bg); }
.accordion-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.accordion-item {
  background: white;
  border-radius: var(--radius);
  border: 1.5px solid var(--border);
  overflow: hidden;
  transition: border-color var(--transition);
}
.accordion-item.active { border-color: var(--accent); box-shadow: 0 4px 20px rgba(0,180,216,0.12); }
.accordion-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 22px 24px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  min-height: 64px;
  transition: background var(--transition);
}
.accordion-btn:hover { background: var(--bg); }
.acc-icon { font-size: 24px; flex-shrink: 0; }
.acc-title {
  flex: 1;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 16px;
  color: var(--primary);
}
.acc-arrow {
  font-size: 20px;
  color: var(--accent);
  transition: transform 0.3s;
  flex-shrink: 0;
}
.accordion-item.active .acc-arrow { transform: rotate(180deg); }
.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s;
  padding: 0 24px;
}
.accordion-item.active .accordion-body {
  max-height: 400px;
  padding: 0 24px 22px;
}
.accordion-body p { font-size: 15px; }

/* ===== REVIEWS ===== */
.reviews-section { background: linear-gradient(160deg, #071e3d 0%, #0a3a6e 100%); }
.reviews-section .section-tag { background: rgba(0,180,216,0.25); border: 1px solid rgba(0,180,216,0.4); color: var(--accent); }
.reviews-section h2 { color: white; }
.reviews-section .section-sub { color: rgba(255,255,255,0.65); }
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}
.review-card {
  background: rgba(255,255,255,0.07);
  border: 1.5px solid rgba(0,180,216,0.25);
  border-radius: var(--radius);
  padding: 28px;
  backdrop-filter: blur(8px);
  transition: all var(--transition);
}
.review-card:hover { transform: translateY(-6px); box-shadow: 0 16px 48px rgba(0,180,216,0.2); border-color: var(--accent); }
.review-stars { font-size: 20px; margin-bottom: 14px; }
.review-text { color: rgba(255,255,255,0.88); font-size: 15px; line-height: 1.8; margin-bottom: 20px; }
.reviewer {
  display: flex;
  align-items: center;
  gap: 14px;
}
.reviewer img {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent);
}
.reviewer strong { display: block; color: white; font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 15px; }
.reviewer span { color: rgba(255,255,255,0.5); font-size: 13px; }
.reviews-overall {
  text-align: center;
  color: white;
}
.reviews-overall img { margin: 0 auto 10px; max-height: 36px; }
.reviews-overall p { color: rgba(255,255,255,0.75); font-size: 16px; }

/* ===== PRICING ===== */
.pricing-section { background: var(--white); }
.countdown-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.cd-label {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--danger);
}
.countdown {
  display: flex;
  align-items: center;
  gap: 8px;
}
.cd-block {
  background: var(--primary);
  color: white;
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  text-align: center;
  min-width: 70px;
}
.cd-block span {
  display: block;
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 32px;
  line-height: 1;
}
.cd-block small { font-size: 11px; letter-spacing: 1px; opacity: 0.7; }
.cd-colon {
  font-size: 32px;
  font-weight: 900;
  color: var(--primary);
  animation: colonBlink 1s step-end infinite;
}
@keyframes colonBlink { 0%, 100% { opacity: 1; } 50% { opacity: 0.2; } }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
  margin-bottom: 40px;
}
.price-card {
  background: white;
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  text-align: center;
  position: relative;
  transition: all var(--transition);
}
.price-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.price-card img { max-height: 180px; margin: 16px auto; object-fit: contain; }
.price-popular {
  border-color: var(--gold);
  box-shadow: 0 8px 40px rgba(212,160,23,0.2);
  transform: scale(1.04);
}
.price-popular:hover { transform: scale(1.06) translateY(-6px); }
.popular-badge {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-gold);
  color: var(--primary);
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 12px;
  padding: 6px 20px;
  border-radius: 50px;
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(212,160,23,0.35);
}
.price-label {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 14px;
  letter-spacing: 2px;
  color: var(--primary);
  text-transform: uppercase;
}
.price-supply {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 22px;
  color: var(--primary);
  margin: 6px 0 2px;
}
.price-days { color: var(--text-muted); font-size: 14px; }
.price-amount {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 10px;
  margin: 16px 0 4px;
}
.price-old { text-decoration: line-through; color: var(--text-muted); font-size: 18px; }
.price-new {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 38px;
  color: var(--danger);
}
.price-per { color: var(--text-muted); font-size: 14px; margin-bottom: 14px; }
.price-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-bottom: 18px;
}
.pbadge {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--primary);
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 50px;
}
.pbadge-green { background: #f0fdf4; border-color: #86efac; color: var(--green); }

.pricing-stars { text-align: center; }
.pricing-stars img { max-height: 32px; margin: 0 auto 8px; }
.pricing-stars p { color: var(--text-muted); font-size: 15px; }

/* ===== BONUS ===== */
.bonus-section { background: linear-gradient(160deg, #f0f7ff 0%, #e8f4fd 100%); }
.bonus-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}
.bonus-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  text-align: center;
  border: 2px solid var(--border);
  transition: all var(--transition);
  box-shadow: var(--shadow);
}
.bonus-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
.bonus-num {
  display: inline-block;
  background: var(--gradient);
  color: white;
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 2px;
  padding: 4px 14px;
  border-radius: 50px;
  margin-bottom: 16px;
}
.bonus-card img {
  max-height: 200px;
  margin: 0 auto 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.bonus-card h3 { font-size: 20px; margin-bottom: 12px; }
.bonus-card p { font-size: 15px; }
.bonus-value {
  margin-top: 16px;
  display: inline-block;
  background: #fef3cd;
  color: #8a6100;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 13px;
  padding: 5px 14px;
  border-radius: 50px;
  border: 1px solid #f0c040;
}
.bonus-cta { text-align: center; }

/* ===== INGREDIENTS ===== */
.ingredients-section { background: white; }
.ing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.ing-card {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  transition: all var(--transition);
}
.ing-card:hover { border-color: var(--accent); box-shadow: var(--shadow); transform: translateY(-4px); }
.ing-icon { font-size: 32px; display: block; margin-bottom: 12px; }
.ing-card h3 { font-size: 17px; margin-bottom: 10px; color: var(--primary); }
.ing-card p { font-size: 14px; line-height: 1.7; }

/* ===== SCIENCE ===== */
.science-section { background: var(--bg); }
.science-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.science-card {
  background: white;
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1.5px solid var(--border);
  transition: all var(--transition);
}
.science-card:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.sci-icon { font-size: 40px; margin-bottom: 14px; }
.science-card h3 { font-size: 18px; margin-bottom: 10px; }
.science-card p { font-size: 15px; }
.sci-tag {
  display: inline-block;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 50px;
  margin-top: 14px;
}

/* ===== GUARANTEE ===== */
.guarantee-section { background: white; }
.guarantee-container {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 70px;
  align-items: center;
}
.guarantee-image img {
  max-width: 320px;
  margin: 0 auto;
  filter: drop-shadow(0 12px 36px rgba(10,58,110,0.15));
  border-radius: 50%;
}
.guarantee-content h2 { margin-bottom: 28px; }
.guarantee-item {
  display: flex;
  gap: 18px;
  margin-bottom: 24px;
  align-items: flex-start;
}
.g-icon {
  font-size: 32px;
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}
.guarantee-item h3 { font-size: 17px; margin-bottom: 8px; }
.guarantee-item p { font-size: 15px; }

/* ===== BENEFITS ===== */
.benefits-section { background: var(--bg); }
.benefits-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.benefit-item {
  display: flex;
  gap: 16px;
  background: white;
  border-radius: var(--radius);
  padding: 24px 20px;
  border: 1.5px solid var(--border);
  transition: all var(--transition);
}
.benefit-item:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.benefit-check {
  font-size: 22px;
  flex-shrink: 0;
  margin-top: 2px;
}
.benefit-item h3 { font-size: 16px; margin-bottom: 8px; }
.benefit-item p { font-size: 14px; }

/* ===== FAQ ===== */
.faq-section { background: white; }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.active { border-color: var(--accent); box-shadow: 0 4px 20px rgba(0,180,216,0.1); }
.faq-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 20px 24px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  min-height: 60px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 16px;
  color: var(--primary);
  transition: background var(--transition);
}
.faq-btn:hover { background: var(--bg); }
.faq-arrow { font-size: 18px; color: var(--accent); transition: transform 0.3s; flex-shrink: 0; }
.faq-item.active .faq-arrow { transform: rotate(180deg); }
.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s;
  padding: 0 24px;
}
.faq-item.active .faq-body {
  max-height: 400px;
  padding: 0 24px 20px;
}
.faq-body p { font-size: 15px; }

/* ===== FINAL CTA ===== */
.final-cta-section {
  background: linear-gradient(160deg, #071e3d 0%, #0a3a6e 60%, #00b4d8 100%);
  position: relative;
  overflow: hidden;
}
.final-cta-glow {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,180,216,0.2) 0%, transparent 70%);
  pointer-events: none;
}
.final-cta-container {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 70px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.final-img-wrap {
  position: relative;
  display: flex;
  justify-content: center;
}
.final-img-ring {
  position: absolute;
  inset: -20px;
  border: 2px dashed rgba(0,180,216,0.4);
  border-radius: 50%;
  animation: ringRotate 12s linear infinite;
}
@keyframes ringRotate { to { transform: rotate(360deg); } }
#finalBottle {
  max-height: 420px;
  width: auto;
  position: relative;
  z-index: 2;
  filter: drop-shadow(0 20px 60px rgba(0,180,216,0.4));
  animation: bottleFloat 4s ease-in-out infinite;
}
.final-content .section-tag { background: rgba(0,180,216,0.25); border: 1px solid rgba(0,180,216,0.4); color: var(--accent); display: inline-block; margin-bottom: 14px; }
.final-content h2 { color: white; margin-bottom: 24px; }
.final-content .gradient-text {
  background: linear-gradient(135deg, #00b4d8 0%, #f0c040 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.final-price {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 24px;
}
.final-old { color: rgba(255,255,255,0.5); font-size: 16px; font-family: 'Montserrat', sans-serif; }
.final-new {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 32px;
  color: var(--gold-light);
}
.final-features {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 30px;
}
.final-features span {
  background: rgba(0,180,216,0.15);
  border: 1px solid rgba(0,180,216,0.3);
  color: rgba(255,255,255,0.85);
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 50px;
}
.final-stars { color: var(--gold-light); font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 15px; margin: 14px 0 8px; }
.final-secure { color: rgba(255,255,255,0.5); font-size: 13px; }

/* Pulse animation */
.pulse-btn {
  animation: pulseCta 2.5s ease-in-out infinite;
}
@keyframes pulseCta {
  0%, 100% { box-shadow: 0 8px 36px rgba(212,160,23,0.5); }
  50% { box-shadow: 0 8px 60px rgba(212,160,23,0.8), 0 0 0 10px rgba(212,160,23,0.15); }
}

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.75);
  padding: 60px 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand .logo-text { font-size: 24px; display: block; margin-bottom: 12px; }
.footer-brand p { color: rgba(255,255,255,0.55); font-size: 14px; line-height: 1.7; max-width: 280px; }
.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}
.footer-social a {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.65);
  transition: all var(--transition);
}
.footer-social a:hover { background: var(--accent); border-color: var(--accent); color: white; transform: translateY(-2px); }
.footer-social svg { width: 16px; height: 16px; }
.footer-links-col h4 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: white;
  margin-bottom: 16px;
}
.footer-links-col a {
  display: block;
  color: rgba(255,255,255,0.55);
  font-size: 14px;
  padding: 5px 0;
  transition: color var(--transition);
}
.footer-links-col a:hover { color: var(--accent); }
.footer-order {
  display: inline-block;
  margin-top: 8px;
  background: var(--gradient);
  color: white !important;
  padding: 8px 20px;
  border-radius: 50px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 13px;
}
.footer-legal-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.legal-link { color: rgba(255,255,255,0.55); font-size: 14px; transition: color var(--transition); padding: 4px 0; }
.legal-link:hover { color: var(--accent); }
.footer-disclaimer {
  border-top: 1px solid rgba(255,255,255,0.1);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  padding: 24px 0;
  margin-bottom: 24px;
}
.footer-disclaimer p { font-size: 13px; color: rgba(255,255,255,0.4); line-height: 1.7; }
.footer-bottom {
  padding-bottom: 28px;
  text-align: center;
}
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.35); }
.footer-bottom a { color: var(--accent); }

/* ===== SCROLL TO TOP ===== */
.scroll-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  background: var(--gradient);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(10,58,110,0.3);
  opacity: 0;
  transform: translateY(20px) scale(0.8);
  transition: all var(--transition);
  z-index: 900;
}
.scroll-top.visible { opacity: 1; transform: translateY(0) scale(1); }
.scroll-top:hover { transform: scale(1.1); box-shadow: 0 8px 32px rgba(0,180,216,0.4); }

/* ===== PURCHASE NOTIFICATION ===== */
.notif-popup {
  position: fixed;
  bottom: 20px;
  left: 20px;
  background: white;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-lg);
  z-index: 9000;
  max-width: 300px;
  transform: translateX(-400px);
  transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1);
}
.notif-popup.visible { transform: translateX(0); }
.notif-img { font-size: 28px; flex-shrink: 0; }
.notif-text { font-size: 13px; flex: 1; line-height: 1.5; }
.notif-text strong { color: var(--primary); font-family: 'Montserrat', sans-serif; }
.notif-close {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-muted);
  padding: 4px;
  flex-shrink: 0;
}
.notif-close:hover { color: var(--danger); }

/* ===== EXIT POPUP ===== */
.exit-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10,58,110,0.65);
  z-index: 9900;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}
.exit-overlay.active { display: flex; }
.exit-popup {
  background: white;
  border-radius: var(--radius-lg);
  padding: 44px 36px;
  max-width: 460px;
  width: 90%;
  text-align: center;
  position: relative;
  animation: popupSlide 0.4s cubic-bezier(0.34,1.56,0.64,1);
  box-shadow: 0 24px 80px rgba(10,58,110,0.25);
}
@keyframes popupSlide { from { transform: scale(0.7); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.exit-close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--bg);
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}
.exit-close:hover { background: var(--border); }
.exit-close a { color: inherit; }
.exit-emoji { font-size: 52px; margin-bottom: 16px; }
.exit-popup h3 { font-size: 22px; margin-bottom: 14px; color: var(--primary); }
.exit-popup p { font-size: 16px; margin-bottom: 20px; }
.exit-price {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 24px;
  font-family: 'Montserrat', sans-serif;
}
.exit-price s { font-size: 20px; color: var(--text-muted); }
.exit-price strong { font-size: 32px; color: var(--danger); }
.exit-sub { margin-top: 16px; font-size: 13px; color: var(--text-muted); }

/* ===== MOBILE RESPONSIVE ===== */
@media (max-width: 1024px) {
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .ing-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-container { gap: 40px; }
}

@media (max-width: 768px) {
  .section-pad { padding: 56px 0; }
  
  /* Nav Mobile */
  .hamburger { display: flex; }
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: white;
    flex-direction: column;
    align-items: flex-start;
    padding: 80px 28px 28px;
    gap: 8px;
    z-index: 999;
    box-shadow: -8px 0 40px rgba(10,58,110,0.15);
    transition: right 0.35s cubic-bezier(0.4,0,0.2,1);
    overflow-y: auto;
  }
  .nav-links.open { right: 0; }
  .nav-link { font-size: 17px; padding: 13px 16px; width: 100%; border-radius: var(--radius-sm); }
  .btn-nav { width: 100%; justify-content: center; margin-top: 8px; }
  
  /* Hero Mobile */
  .hero-container { grid-template-columns: 1fr; gap: 28px; text-align: center; }
  .hero-image-wrap { order: -1; }
  .hero-bottle { max-height: 320px; }
  .hero-glow { width: 240px; height: 240px; }
  .hero-h1 { font-size: 28px; }
  .hero-stars { justify-content: center; }
  .hero-guarantee { margin: 14px auto 0; }
  .btn-hero { font-size: 16px; padding: 18px 28px; }
  
  /* Sections */
  .why-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .what-container { grid-template-columns: 1fr; gap: 32px; }
  .what-image { order: -1; }
  .reviews-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 380px; margin: 0 auto 40px; }
  .price-popular { transform: scale(1); }
  .price-popular:hover { transform: scale(1.02) translateY(-6px); }
  .bonus-grid { grid-template-columns: 1fr; }
  .ing-grid { grid-template-columns: 1fr; }
  .science-grid { grid-template-columns: 1fr; }
  .guarantee-container { grid-template-columns: 1fr; gap: 32px; }
  .guarantee-image { order: -1; }
  .benefits-grid { grid-template-columns: 1fr; }
  .final-cta-container { grid-template-columns: 1fr; gap: 36px; text-align: center; }
  .final-img-wrap { order: -1; }
  .final-features { justify-content: center; }
  .final-price { align-items: center; }
  .footer-top { grid-template-columns: 1fr; gap: 36px; text-align: center; }
  .footer-brand p { max-width: 100%; }
  .footer-social { justify-content: center; }
  .footer-legal-links { align-items: center; }
  .footer-links-col { text-align: center; }
  .footer-order { display: block; text-align: center; margin: 8px auto 0; }
}

@media (max-width: 576px) {
  .why-grid { grid-template-columns: 1fr; }
  h1 { font-size: 24px; }
  h2 { font-size: 22px; }
  .hero-h1 { font-size: 26px; }
  .cd-block span { font-size: 26px; }
  .cd-block { min-width: 58px; padding: 10px 14px; }
  .exit-popup { padding: 36px 24px; }
  .notif-popup { max-width: calc(100vw - 40px); }
  .scroll-top { bottom: 16px; right: 16px; }
}

@media (max-width: 320px) {
  .container { padding: 0 14px; }
  h1 { font-size: 22px; }
  h2 { font-size: 20px; }
  .btn-hero { font-size: 14px; padding: 16px 20px; }
}