/* ============================================
   DentaBiome - styles.css
   Design: Medical Professional + Modern Teal
   Primary: #0B6E6E | Accent: #00C6B2 | Gold: #F5A623
   Fonts: Montserrat (headings) + Open Sans (body)
   ============================================ */

/* ===== CSS VARIABLES ===== */
:root {
  --primary: #0B6E6E;
  --primary-dark: #084F4F;
  --accent: #00C6B2;
  --accent-light: #E0FAF8;
  --gold: #F5A623;
  --gold-dark: #E0921A;
  --red: #E53E3E;
  --white: #FFFFFF;
  --off-white: #F7FDFC;
  --light-gray: #F0F4F8;
  --mid-gray: #CBD5E0;
  --text-dark: #1A202C;
  --text-body: #4A5568;
  --text-muted: #718096;
  --shadow-sm: 0 2px 8px rgba(11,110,110,0.10);
  --shadow-md: 0 8px 30px rgba(11,110,110,0.15);
  --shadow-lg: 0 20px 60px rgba(11,110,110,0.20);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --transition: 0.3s ease;
  --font-head: 'Montserrat', sans-serif;
  --font-body: 'Open Sans', sans-serif;
}

/* ===== 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: var(--font-body);
  color: var(--text-body);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}
* { -webkit-tap-highlight-color: transparent; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
input, select, textarea { font-size: 16px; }

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

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.2;
}
h1 { font-size: clamp(26px, 5vw, 52px); font-weight: 800; }
h2 { font-size: clamp(22px, 4vw, 38px); }
h3 { font-size: clamp(18px, 3vw, 24px); }
h4 { font-size: clamp(16px, 2.5vw, 20px); }

.section-title {
  text-align: center;
  margin-bottom: 12px;
  font-size: clamp(24px, 4vw, 40px);
}
.section-sub {
  text-align: center;
  color: var(--text-muted);
  font-size: 16px;
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.7;
}
.eyebrow-label {
  display: inline-block;
  background: var(--accent-light);
  color: var(--primary);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 16px;
}
.eyebrow-label.centered { display: block; text-align: center; width: fit-content; margin: 0 auto 16px; }
.accent { color: var(--accent); }
.highlight-text {
  background: linear-gradient(135deg, var(--accent), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== BUTTONS ===== */
.btn-primary, .btn-hero, .btn-nav-cta, .btn-price, .btn-final-cta, .mob-nav-cta {
  font-family: var(--font-head);
  font-weight: 700;
  border: none;
  cursor: pointer;
  display: inline-block;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  min-height: 48px;
  line-height: 1.3;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--white);
  padding: 16px 32px;
  border-radius: var(--radius-sm);
  font-size: 16px;
}
.btn-primary:hover { transform: scale(1.05); box-shadow: var(--shadow-md); }
.btn-primary:active { transform: scale(0.98); }

.btn-hero {
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--white);
  padding: 18px 36px;
  border-radius: var(--radius-sm);
  font-size: 18px;
  display: block;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 8px 30px rgba(245,166,35,0.4);
  animation: pulse-btn 2s infinite;
}
.btn-hero:hover { transform: scale(1.05); box-shadow: 0 12px 40px rgba(245,166,35,0.5); }
.btn-hero:active { transform: scale(0.98); }

@keyframes pulse-btn {
  0%, 100% { box-shadow: 0 8px 30px rgba(245,166,35,0.4); }
  50% { box-shadow: 0 12px 50px rgba(245,166,35,0.65); }
}

.btn-nav-cta {
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--white);
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  white-space: nowrap;
}
.btn-nav-cta:hover { transform: scale(1.05); box-shadow: var(--shadow-sm); }

.btn-price {
  display: block;
  width: 100%;
  margin: 14px 0 10px;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.btn-price:hover { transform: scale(1.04); box-shadow: var(--shadow-md); }
.btn-price:active { transform: scale(0.98); }
.atc-img { width: 100%; max-width: 220px; margin: 0 auto; border-radius: var(--radius-sm); }
.cards-img { margin: 0 auto; max-width: 200px; }

.btn-final-cta {
  background: linear-gradient(135deg, var(--gold), #FF6B35);
  color: var(--white);
  padding: 20px 40px;
  border-radius: var(--radius-sm);
  font-size: 20px;
  display: block;
  width: 100%;
  max-width: 500px;
  box-shadow: 0 10px 40px rgba(245,166,35,0.45);
  animation: pulse-btn 2s infinite;
  margin: 0 auto;
  text-align: center;
}
.btn-final-cta:hover { transform: scale(1.05); box-shadow: 0 15px 50px rgba(245,166,35,0.6); }

/* ===== POPUP ===== */
.popup-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 10000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.popup-overlay.active { display: flex; }
.popup-box {
  background: var(--white);
  border-radius: var(--radius-lg);
  max-width: 480px;
  width: 100%;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  animation: popIn 0.4s cubic-bezier(0.34,1.56,0.64,1);
  position: relative;
}
@keyframes popIn {
  from { opacity: 0; transform: scale(0.7) translateY(30px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
.popup-close {
  display: block;
  background: var(--primary);
  color: var(--white);
  padding: 10px 20px;
  text-align: right;
  font-size: 13px;
  font-family: var(--font-head);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
}
.popup-close:hover { background: var(--primary-dark); }
.popup-content { padding: 28px 30px 32px; text-align: center; }
.popup-badge {
  background: var(--red);
  color: var(--white);
  display: inline-block;
  padding: 5px 14px;
  border-radius: 50px;
  font-size: 12px;
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.popup-content h3 { font-size: clamp(20px, 4vw, 28px); margin-bottom: 12px; color: var(--text-dark); }
.popup-content p { color: var(--text-body); margin-bottom: 20px; font-size: 16px; }
.popup-cta-btn {
  display: block;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--white);
  padding: 16px 24px;
  border-radius: var(--radius-sm);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  margin-bottom: 12px;
  transition: transform var(--transition), box-shadow var(--transition);
  animation: pulse-btn 2s infinite;
}
.popup-cta-btn:hover { transform: scale(1.04); }
.popup-note { font-size: 13px; color: var(--text-muted); margin: 0; }

/* ===== PURCHASE NOTIFICATION ===== */
.purchase-notify {
  position: fixed;
  bottom: 20px;
  left: 16px;
  background: var(--white);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 14px;
  box-shadow: var(--shadow-md);
  max-width: 280px;
  z-index: 9999;
  display: none;
  animation: slideInLeft 0.4s ease;
  font-family: var(--font-body);
}
.purchase-notify.show { display: block; }
@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-40px); }
  to { opacity: 1; transform: translateX(0); }
}
.purchase-notify strong { color: var(--primary); }

/* ===== SCROLL TO TOP ===== */
.scroll-top-btn {
  position: fixed;
  bottom: 24px;
  right: 20px;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--white);
  border: none;
  border-radius: 50%;
  font-size: 22px;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 9000;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition), opacity var(--transition);
  line-height: 1;
}
.scroll-top-btn.visible { display: flex; }
.scroll-top-btn:hover { transform: scale(1.1) translateY(-3px); }
.scroll-top-btn:active { transform: scale(0.95); }

/* ===== NAVIGATION ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 5000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
  transition: padding var(--transition), box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: 0 4px 30px rgba(11,110,110,0.12); }
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-img { width: 44px; height: 44px; border-radius: 10px; object-fit: cover; }
.logo-text {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 20px;
  color: var(--primary);
  white-space: nowrap;
}
.main-nav { flex: 1; display: flex; justify-content: center; }
.nav-links { display: flex; gap: 8px; align-items: center; }
.nav-link {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 14px;
  color: var(--text-dark);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}
.nav-link:hover { color: var(--primary); background: var(--accent-light); }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
  flex-shrink: 0;
}
.hamburger:hover { background: var(--accent-light); }
.hamburger span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: var(--primary);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.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); }

.mobile-menu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
  background: var(--white);
  border-top: 1px solid var(--mid-gray);
}
.mobile-menu.open { max-height: 400px; }
.mobile-menu ul { padding: 12px 20px 16px; }
.mobile-menu li { border-bottom: 1px solid var(--light-gray); }
.mob-nav-link {
  display: block;
  padding: 14px 8px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 16px;
  color: var(--text-dark);
  transition: color var(--transition);
}
.mob-nav-link:hover { color: var(--primary); }
.mob-nav-cta {
  display: block;
  margin: 16px 0 4px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--white);
  padding: 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  text-align: center;
  min-height: 48px;
  line-height: 1.5;
}

/* ===== HERO SECTION ===== */
.hero-section {
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
  background: linear-gradient(160deg, #E8FAF9 0%, #F0FBF9 40%, #FFFFFF 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
}
.hero-bg-anim {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.bubble {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,198,178,0.15), transparent);
  animation: floatBubble var(--dur, 6s) ease-in-out infinite var(--del, 0s);
}
.b1 { width: 300px; height: 300px; top: -60px; right: -80px; --dur: 7s; --del: 0s; }
.b2 { width: 200px; height: 200px; bottom: 10%; left: -60px; --dur: 9s; --del: -2s; }
.b3 { width: 150px; height: 150px; top: 40%; right: 10%; --dur: 8s; --del: -4s; }
.b4 { width: 100px; height: 100px; top: 20%; left: 25%; --dur: 6s; --del: -1s; }
@keyframes floatBubble {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.7; }
  50% { transform: translateY(-30px) scale(1.08); opacity: 1; }
}
.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-image-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-glow {
  position: absolute;
  width: 80%;
  height: 80%;
  background: radial-gradient(circle, rgba(0,198,178,0.3) 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-product-img {
  position: relative;
  z-index: 1;
  max-width: 400px;
  width: 100%;
  animation: heroFloat 4s ease-in-out infinite;
  filter: drop-shadow(0 20px 50px rgba(11,110,110,0.25));
}
@keyframes heroFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}
.hero-badge-float {
  position: absolute;
  bottom: 0;
  right: 0;
  background: var(--gold);
  color: var(--white);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 13px;
  padding: 8px 16px;
  border-radius: 50px;
  box-shadow: var(--shadow-md);
  z-index: 2;
  animation: badgePop 2s ease-in-out infinite;
}
@keyframes badgePop {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.06); }
}
.hero-eyebrow {
  background: var(--accent-light);
  color: var(--primary);
  display: inline-block;
  padding: 8px 18px;
  border-radius: 50px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.hero-h1 { margin-bottom: 20px; }
.hero-lead {
  font-size: 17px;
  color: var(--text-body);
  margin-bottom: 16px;
  line-height: 1.75;
}
.hero-sub {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 28px;
  line-height: 1.7;
}
.hero-stats {
  display: flex;
  gap: 28px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.stat strong {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
}
.stat span { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.hero-disclaimer {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 14px;
  line-height: 1.6;
}

/* ===== WHY CHOOSE US ===== */
.why-section {
  padding: 80px 0;
  background: var(--white);
}
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.why-card {
  background: var(--off-white);
  border: 1.5px solid var(--accent-light);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  cursor: default;
}
.why-card:hover {
  transform: scale(1.05) rotate(1deg);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}
.why-icon { margin-bottom: 16px; }
.why-icon img { width: 80px; height: 80px; margin: 0 auto; object-fit: contain; }
.why-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--white);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 1.5px;
  padding: 5px 14px;
  border-radius: 50px;
  margin-bottom: 12px;
}
.why-card h3 { font-size: 17px; margin-bottom: 10px; color: var(--text-dark); }
.why-card p { font-size: 14px; color: var(--text-body); line-height: 1.65; }

/* ===== WHAT IS ===== */
.what-section {
  padding: 80px 0;
  background: linear-gradient(160deg, var(--accent-light) 0%, var(--white) 100%);
}
.what-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.what-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
}
.what-content h2 { margin: 12px 0 20px; }
.what-content p { margin-bottom: 16px; font-size: 15px; line-height: 1.75; }

/* ===== HOW IT WORKS ===== */
.how-section {
  padding: 80px 0;
  background: var(--white);
}
.accordion-list, .science-accordion { max-width: 860px; margin: 0 auto; }
.accordion-item {
  border: 1.5px solid var(--mid-gray);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.accordion-item:hover { border-color: var(--accent); }
.accordion-header {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  background: var(--off-white);
  border: none;
  cursor: pointer;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 16px;
  color: var(--text-dark);
  text-align: left;
  transition: background var(--transition);
  min-height: 58px;
}
.accordion-header:hover { background: var(--accent-light); }
.accordion-header[aria-expanded="true"] { background: var(--accent-light); color: var(--primary); }
.acc-num {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  color: var(--accent);
  min-width: 40px;
  flex-shrink: 0;
}
.acc-title { flex: 1; }
.acc-icon {
  font-size: 22px;
  color: var(--primary);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  font-weight: 300;
}
.accordion-header[aria-expanded="true"] .acc-icon { transform: rotate(45deg); }
.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.accordion-body.open { max-height: 500px; }
.accordion-body p {
  padding: 20px 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-body);
  border-top: 1px solid var(--mid-gray);
}

/* ===== REVIEWS ===== */
.reviews-section {
  padding: 80px 0;
  background: var(--light-gray);
}
.stars-overall {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: center;
  margin-bottom: 48px;
}
.stars-overall span { font-size: 14px; color: var(--text-muted); font-family: var(--font-head); font-weight: 600; }
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.review-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  border: 1.5px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.review-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
.review-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}
.review-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 3px solid var(--accent);
}
.review-header strong { display: block; font-family: var(--font-head); font-size: 16px; color: var(--text-dark); }
.review-loc { font-size: 13px; color: var(--text-muted); }
.review-stars { color: var(--gold); font-size: 18px; letter-spacing: 2px; }
.review-text { font-size: 14px; line-height: 1.75; color: var(--text-body); }

/* ===== PRICING ===== */
.pricing-section {
  padding: 80px 0;
  background: linear-gradient(180deg, var(--primary-dark) 0%, var(--primary) 100%);
}
.pricing-section .section-title, .pricing-section .section-sub, .pricing-section .eyebrow-label { color: var(--white); }
.pricing-section .section-sub { color: rgba(255,255,255,0.8); }
.pricing-section .eyebrow-label { background: rgba(255,255,255,0.15); color: var(--white); }
.pricing-section-2 { background: linear-gradient(180deg, #0B4F4F 0%, var(--primary-dark) 100%); }

.countdown-wrap {
  text-align: center;
  margin: 0 auto 40px;
}
.countdown-label {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  color: rgba(255,255,255,0.9);
  margin-bottom: 16px;
}
.countdown {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,0,0,0.3);
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: var(--radius-md);
  padding: 16px 28px;
}
.cd-block { text-align: center; }
.cd-block span {
  display: block;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(36px, 8vw, 56px);
  color: var(--gold);
  line-height: 1;
  min-width: 60px;
}
.cd-block label {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: rgba(255,255,255,0.7);
  text-transform: uppercase;
}
.cd-sep {
  font-size: clamp(30px, 6vw, 48px);
  color: var(--gold);
  font-weight: 800;
  line-height: 1;
  animation: blink 1s step-start 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;
}
.price-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  position: relative;
  box-shadow: var(--shadow-lg);
  border: 2px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition);
}
.price-card:hover { transform: translateY(-8px); box-shadow: 0 30px 80px rgba(0,0,0,0.25); }
.price-card.popular {
  border-color: var(--gold);
  transform: scale(1.03);
  z-index: 2;
}
.price-card.popular:hover { transform: scale(1.03) translateY(-8px); }
.popular-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--white);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 12px;
  padding: 6px 18px;
  border-radius: 50px;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}
.price-label {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.price-bottles {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 22px;
  color: var(--text-dark);
}
.price-supply {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.price-img { margin: 0 auto 16px; max-width: 160px; }
.price-per {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 28px;
  color: var(--primary);
}
.per-unit { font-size: 14px; font-weight: 600; color: var(--text-muted); }
.price-total {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.price-total strong { color: var(--red); font-family: var(--font-head); font-weight: 800; font-size: 18px; }
.price-badge {
  display: inline-block;
  background: var(--accent-light);
  color: var(--primary);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 50px;
  margin: 4px 2px;
}
.price-badge.shipping { background: #FFF3E0; color: var(--gold-dark); }
.pricing-rating {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 20px;
}
.pricing-rating span { color: rgba(255,255,255,0.8); font-size: 14px; font-family: var(--font-head); }

/* ===== BONUSES ===== */
.bonus-section {
  padding: 80px 0;
  background: linear-gradient(160deg, #FFF8E7 0%, var(--white) 100%);
}
.bonus-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  margin-top: 48px;
}
.bonus-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  text-align: center;
  border: 2px solid var(--gold);
  box-shadow: var(--shadow-md);
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition);
}
.bonus-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.bonus-tag {
  position: absolute;
  top: -14px;
  left: 24px;
  background: var(--gold);
  color: var(--white);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 12px;
  padding: 6px 16px;
  border-radius: 50px;
}
.bonus-img { margin: 0 auto 20px; max-width: 200px; border-radius: var(--radius-sm); }
.bonus-card h3 { font-size: 20px; margin-bottom: 12px; color: var(--text-dark); }
.bonus-card p { font-size: 14px; color: var(--text-body); line-height: 1.7; }

/* ===== INGREDIENTS ===== */
.ingredients-section {
  padding: 80px 0;
  background: var(--off-white);
}
.ingredients-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 48px;
}
.ing-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  border: 1.5px solid var(--mid-gray);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.ing-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--accent); }
.ing-icon { font-size: 32px; margin-bottom: 12px; }
.ing-card h3 { font-size: 16px; margin-bottom: 10px; color: var(--primary); }
.ing-card p { font-size: 13.5px; color: var(--text-body); line-height: 1.7; margin-bottom: 12px; }
.ing-benefit {
  font-size: 12px;
  color: var(--accent);
  font-family: var(--font-head);
  font-weight: 600;
  border-top: 1px solid var(--mid-gray);
  padding-top: 10px;
  line-height: 1.5;
}

/* ===== SCIENCE ===== */
.science-section {
  padding: 80px 0;
  background: var(--white);
}

/* ===== GUARANTEE ===== */
.guarantee-section {
  padding: 80px 0;
  background: linear-gradient(160deg, var(--accent-light) 0%, var(--white) 100%);
}
.guarantee-container {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 60px;
  align-items: center;
}
.guarantee-image img {
  max-width: 280px;
  width: 100%;
  margin: 0 auto;
  filter: drop-shadow(var(--shadow-md));
}
.guarantee-content h2 { margin: 12px 0 16px; }
.guarantee-lead { font-size: 16px; color: var(--text-body); margin-bottom: 28px; }
.guarantee-points { display: flex; flex-direction: column; gap: 22px; margin-bottom: 32px; }
.g-point { display: flex; gap: 16px; align-items: flex-start; }
.g-icon { font-size: 28px; flex-shrink: 0; line-height: 1.4; }
.g-point h3 { font-size: 17px; margin-bottom: 6px; color: var(--primary); }
.g-point p { font-size: 14px; color: var(--text-body); line-height: 1.7; }

/* ===== BENEFITS ===== */
.benefits-section {
  padding: 80px 0;
  background: var(--light-gray);
}
.benefits-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 48px;
}
.benefit-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  border: 1.5px solid var(--mid-gray);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.benefit-item:hover { transform: translateX(6px); box-shadow: var(--shadow-md); border-color: var(--accent); }
.benefit-check { font-size: 22px; flex-shrink: 0; }
.benefit-text h3 { font-size: 16px; margin-bottom: 8px; color: var(--text-dark); }
.benefit-text p { font-size: 14px; color: var(--text-body); line-height: 1.7; }

/* ===== FAQ ===== */
.faq-section {
  padding: 80px 0;
  background: var(--off-white);
}
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item {
  border: 1.5px solid var(--mid-gray);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  background: var(--white);
  border: none;
  cursor: pointer;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 15px;
  color: var(--text-dark);
  text-align: left;
  gap: 12px;
  min-height: 58px;
  transition: background var(--transition), color var(--transition);
}
.faq-header:hover { background: var(--accent-light); color: var(--primary); }
.faq-header[aria-expanded="true"] { background: var(--accent-light); color: var(--primary); }
.faq-icon {
  font-size: 22px;
  color: var(--primary);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  font-weight: 300;
}
.faq-header[aria-expanded="true"] .faq-icon { transform: rotate(45deg); }
.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-body.open { max-height: 400px; }
.faq-body p {
  padding: 18px 22px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-body);
  border-top: 1px solid var(--mid-gray);
}

/* ===== FINAL CTA ===== */
.final-cta-section {
  padding: 80px 0;
  background: linear-gradient(160deg, #E8FAF9 0%, #D0F5F1 100%);
  position: relative;
  overflow: hidden;
}
.final-cta-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.fcta-bubble {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(11,110,110,0.12), transparent);
  animation: floatBubble var(--dur, 6s) ease-in-out infinite var(--del, 0s);
}
.fb1 { width: 400px; height: 400px; top: -100px; right: -120px; --dur: 8s; }
.fb2 { width: 250px; height: 250px; bottom: -60px; left: -80px; --dur: 10s; --del: -3s; }
.fb3 { width: 180px; height: 180px; top: 50%; left: 20%; --dur: 7s; --del: -5s; }
.final-cta-container {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.final-cta-image { position: relative; }
.final-product-img {
  max-width: 340px;
  width: 100%;
  margin: 0 auto;
  animation: heroFloat 5s ease-in-out infinite;
  filter: drop-shadow(0 20px 50px rgba(11,110,110,0.2));
}
.final-badge-float {
  position: absolute;
  top: 10px;
  right: 0;
  background: var(--red);
  color: var(--white);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 13px;
  padding: 8px 16px;
  border-radius: 50px;
  box-shadow: var(--shadow-md);
  animation: badgePop 2s ease-in-out infinite;
}
.final-h2 { font-size: clamp(26px, 4vw, 40px); margin-bottom: 8px; }
.final-sub-h { font-size: 18px; color: var(--text-body); margin-bottom: 24px; font-family: var(--font-head); font-weight: 600; }
.final-price-block {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}
.final-old-price { font-size: 16px; color: var(--text-muted); }
.final-new-price {
  font-family: var(--font-head);
  font-size: clamp(24px, 4vw, 34px);
  color: var(--red);
}
.final-new-price strong { font-weight: 800; }
.final-desc { font-size: 15px; color: var(--text-body); line-height: 1.75; margin-bottom: 20px; }
.final-cta-trust {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.final-cta-trust span {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 13px;
  color: var(--primary);
  background: var(--accent-light);
  padding: 6px 14px;
  border-radius: 50px;
}
.final-secure {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 14px;
  text-align: center;
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--text-dark);
  color: rgba(255,255,255,0.8);
}
.footer-container {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-top: 56px;
  padding-bottom: 40px;
}
.footer-brand img { margin-bottom: 10px; border-radius: 10px; }
.footer-logo-text {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 20px;
  color: var(--white);
  display: block;
  margin-bottom: 10px;
}
.footer-tagline { font-size: 13px; color: rgba(255,255,255,0.55); line-height: 1.6; }
.footer-links-col h4 {
  font-family: var(--font-head);
  font-size: 15px;
  color: var(--white);
  margin-bottom: 16px;
  font-weight: 700;
}
.footer-links-col ul li { margin-bottom: 8px; }
.footer-links-col ul li a {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  transition: color var(--transition);
}
.footer-links-col ul li a:hover { color: var(--accent); }
.footer-legal-links { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.legal-link { font-size: 13px; color: rgba(255,255,255,0.65); transition: color var(--transition); }
.legal-link:hover { color: var(--accent); }
.link-separator { color: rgba(255,255,255,0.3); }
.footer-social h4 {
  font-family: var(--font-head);
  font-size: 15px;
  color: var(--white);
  margin-bottom: 16px;
  font-weight: 700;
}
.social-icons { display: flex; gap: 12px; flex-wrap: wrap; }
.social-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  transition: background var(--transition), color var(--transition), transform var(--transition);
}
.social-icon:hover { background: var(--accent); color: var(--white); transform: translateY(-3px); }
.footer-disclaimer {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 28px 0;
  background: rgba(0,0,0,0.2);
}
.footer-disclaimer p { font-size: 12px; color: rgba(255,255,255,0.5); line-height: 1.7; margin-bottom: 10px; }
.footer-copy { font-size: 13px; color: rgba(255,255,255,0.4); }
.footer-copy a { color: var(--accent); }

/* ===== REVEAL ANIMATIONS ===== */
.reveal-up, .reveal-left, .reveal-right {
  opacity: 0;
  transition: opacity 0.6s ease, transform 0.6s ease;
  transition-delay: var(--delay, 0s);
}
.reveal-up { transform: translateY(40px); }
.reveal-left { transform: translateX(-40px); }
.reveal-right { transform: translateX(40px); }
.revealed { opacity: 1; transform: translate(0, 0); }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal-up, .reveal-left, .reveal-right { opacity: 1; transform: none; }
}

/* ===== RESPONSIVE: TABLET (max 991px) ===== */
@media (max-width: 991px) {
  .hero-container { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .hero-image-wrap { order: -1; }
  .hero-stats { justify-content: center; }
  .btn-hero { margin: 0 auto; }
  .hero-product-img { max-width: 280px; }

  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .what-container { grid-template-columns: 1fr; gap: 40px; }
  .what-image { order: -1; }

  .reviews-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto 40px; }
  .price-card.popular { transform: scale(1); }
  .price-card.popular:hover { transform: translateY(-6px); }

  .bonus-grid { grid-template-columns: 1fr; max-width: 500px; margin: 0 auto; }
  .ingredients-grid { grid-template-columns: repeat(2, 1fr); }
  .guarantee-container { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .guarantee-image { order: -1; }
  .g-point { flex-direction: column; align-items: center; text-align: center; }
  .benefits-grid { grid-template-columns: 1fr; }

  .final-cta-container { grid-template-columns: 1fr; text-align: center; }
  .final-cta-image { order: -1; }
  .final-cta-trust { justify-content: center; }
  .final-secure { text-align: center; }

  .footer-container { grid-template-columns: 1fr 1fr; gap: 32px; }
}

/* ===== RESPONSIVE: TABLET SMALL (max 768px) ===== */
@media (max-width: 768px) {
  .main-nav, .btn-nav-cta { display: none; }
  .hamburger { display: flex; }
  .hero-section { padding: 100px 0 60px; }
  .section-title { font-size: clamp(22px, 5vw, 32px); }
  .hero-stats { gap: 20px; }
  .stat strong { font-size: 20px; }
}

/* ===== RESPONSIVE: PHONE (max 576px) ===== */
@media (max-width: 576px) {
  .hero-section { padding: 88px 0 50px; }
  .hero-product-img { max-width: 220px; }
  .why-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .ingredients-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 14px; }
  .stat strong { font-size: 18px; }
  .footer-container { grid-template-columns: 1fr; text-align: center; }
  .footer-brand img { margin: 0 auto 10px; }
  .footer-legal-links { justify-content: center; }
  .social-icons { justify-content: center; }
  .final-cta-trust { flex-direction: column; align-items: center; }
  .popup-content { padding: 20px 16px 24px; }
  .popup-content h3 { font-size: 20px; }
  .countdown { padding: 12px 18px; }
  .cd-block span { font-size: clamp(30px, 8vw, 48px); }
  .btn-final-cta { font-size: 16px; padding: 16px 24px; }
  .purchase-notify { max-width: 240px; font-size: 12px; }
}

/* ===== RESPONSIVE: SMALL PHONE (max 380px) ===== */
@media (max-width: 380px) {
  .logo-text { font-size: 16px; }
  .hero-h1 { font-size: 22px; }
  .hero-stats { flex-direction: column; gap: 8px; align-items: center; }
  .cd-block span { font-size: 30px; min-width: 44px; }
}