/* ===== BREATHIZEN — Light Mist / Clinical Blue Palette ===== */

/* ===== CSS VARIABLES ===== */
:root {
  --ink: #14313f;            /* headline + darkest text */
  --deep: #295265;           /* brand blue, from the brief */
  --deep-soft: #3a6d85;
  --teal: #1b8098;           /* primary CTA */
  --teal-dark: #136377;
  --sky: #8ec6d9;
  --mist: #dbe9f0;
  --header-bg: #e0e5e8;      /* header colour, from the brief */
  --tint: #f2f7fa;           /* pale blue section background */
  --tint-2: #e9f2f6;
  --gray: #5d707b;
  --gold: #b8873c;           /* savings + guarantee accents only */
  --gold-soft: #e8d3ae;
  --white: #ffffff;
  --ok: #2f8f63;
  --bad: #b4503a;
  --line: #cfdee6;

  --gradient-hero: linear-gradient(165deg, #1b3d4d 0%, #295265 46%, #5a8ba1 100%);
  --gradient-btn: linear-gradient(135deg, #1b8098 0%, #136377 100%);
  --gradient-gold: linear-gradient(135deg, #c99a52 0%, #a8752f 100%);

  --card-shadow: 0 4px 22px rgba(20, 49, 63, 0.08);
  --card-shadow-hover: 0 14px 40px rgba(20, 49, 63, 0.16);
  --radius: 16px;
  --radius-sm: 9px;
  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --font-heading: 'Outfit', system-ui, -apple-system, sans-serif;
  --font-body: 'Source Sans 3', system-ui, -apple-system, 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%;
}
* { -webkit-tap-highlight-color: transparent; }
body {
  font-family: var(--font-body);
  color: #22343d;
  background: var(--white);
  overflow-x: hidden;
  line-height: 1.7;
  /* same duration and easing as .promo-bar's max-height, so the page content
     moves in lockstep with the collapsing bar instead of lagging behind it */
  transition: padding-top 0.3s ease;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
:focus-visible { outline: 3px solid var(--teal); outline-offset: 3px; border-radius: 4px; }

/* ===== UTILITIES ===== */
.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.section-pad { padding: 78px 0; }
.bg-alt { background: var(--tint); }
.bg-package { background: var(--deep); color: var(--white); }
.bg-package .section-header h2 { color: var(--white); }
.bg-package .section-header p { color: #cfe2ea; }
.bg-package .pricing-note { color: #bcd6e0; }
.accent-text { color: var(--teal); }
.hero .accent-text { color: var(--sky); }
.bg-package .accent-text { color: var(--sky); }

.section-header { text-align: center; margin-bottom: 50px; }
.section-header h2 {
  font-family: var(--font-heading);
  font-size: clamp(25px, 4vw, 40px);
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin-bottom: 13px;
  line-height: 1.18;
}
.section-header p {
  font-size: clamp(15px, 2vw, 17.5px);
  color: var(--gray);
  max-width: 640px;
  margin: 0 auto;
}
.section-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--teal);
  background: var(--tint-2);
  border: 1px solid var(--mist);
  padding: 5px 14px;
  border-radius: 40px;
  margin-bottom: 14px;
}
.section-header .section-tag { margin-bottom: 16px; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: 600;
  text-align: center;
  border: none;
  cursor: pointer;
  border-radius: 50px;
  transition: var(--transition);
  line-height: 1.35;
}
.btn-primary {
  background: var(--gradient-btn);
  color: var(--white);
  padding: 14px 32px;
  font-size: 16px;
  box-shadow: 0 6px 18px rgba(19, 99, 119, 0.28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(19, 99, 119, 0.34); }
.btn-hero {
  background: var(--gradient-btn);
  color: var(--white);
  padding: 17px 40px;
  font-size: 17.5px;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.28);
}
.btn-hero:hover { transform: translateY(-2px); }
.btn-nav {
  background: var(--gradient-btn);
  color: var(--white);
  padding: 10px 24px;
  font-size: 15px;
}
.btn-nav:hover { transform: translateY(-1px); box-shadow: 0 8px 20px rgba(19, 99, 119, 0.3); }
.btn-order {
  display: block;
  width: 100%;
  background: var(--gradient-btn);
  color: var(--white);
  padding: 15px 20px;
  font-size: 17px;
  margin-top: 6px;
  box-shadow: 0 6px 18px rgba(19, 99, 119, 0.25);
}
.btn-order:hover { transform: translateY(-2px); }
.btn-popular { background: var(--gradient-gold); box-shadow: 0 6px 18px rgba(168, 117, 47, 0.32); }
.btn-final {
  background: var(--white);
  color: var(--deep);
  padding: 17px 42px;
  font-size: 17.5px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}
.btn-final:hover { transform: translateY(-2px); }

/* ===== SITE HEADER (promo bar + navbar as ONE fixed wrapper) ===== */
.site-header {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  z-index: 1000;
}
.promo-bar {
  background: var(--deep);
  color: #e5eff3;
  font-size: 13px;
  padding: 8px 16px;
  text-align: center;
  max-height: 200px;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}
.promo-bar strong { color: var(--sky); font-weight: 600; }
.promo-bar .promo-note { opacity: 0.72; font-size: 11.5px; margin-left: 5px; }
.site-header.header-hide-promo .promo-bar {
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
}

/* ===== NAVBAR (light header — dark text) ===== */
.navbar {
  background: var(--header-bg);
  border-bottom: 1px solid #cdd5da;
  transition: box-shadow 0.3s ease, background 0.3s ease;
}
.navbar.scrolled { box-shadow: 0 4px 18px rgba(20, 49, 63, 0.13); background: #e7ebee; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding-top: 11px; padding-bottom: 11px; }
.nav-logo { display: flex; align-items: center; gap: 9px; }
.logo-img { width: 34px; height: 34px; object-fit: contain; }
.logo-text {
  font-family: var(--font-heading);
  font-size: 23px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--deep);
}
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-link {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  position: relative;
  transition: color 0.25s ease;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0; bottom: -5px;
  width: 0; height: 2px;
  background: var(--teal);
  transition: width 0.25s ease;
}
.nav-link:hover { color: var(--teal); }
.nav-link:hover::after { width: 100%; }
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.hamburger span { width: 25px; height: 2.5px; background: var(--ink); border-radius: 2px; transition: var(--transition); }
.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 {
  position: fixed; inset: 0;
  background: rgba(20, 49, 63, 0.5);
  opacity: 0; visibility: hidden;
  transition: var(--transition);
  z-index: 998;
}
.nav-overlay.show { opacity: 1; visibility: visible; }

/* ===== HERO ===== */
.hero {
  position: relative;
  background: var(--gradient-hero);
  color: var(--white);
  padding: 74px 0 110px;
  overflow: hidden;
}
/* soft "breath" arcs — the one decorative motif on the page */
.hero::before {
  content: '';
  position: absolute;
  top: -22%; right: -14%;
  width: 680px; height: 680px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(142, 198, 217, 0.26) 0%, rgba(142, 198, 217, 0.09) 45%, transparent 68%);
  pointer-events: none;
}
.hero-particles { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.hero-particle {
  position: absolute;
  bottom: -60px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
  animation: floatUp linear infinite;
}
@keyframes floatUp {
  0%   { transform: translateY(0) scale(0.8); opacity: 0; }
  12%  { opacity: 0.7; }
  100% { transform: translateY(-105vh) scale(1.25); opacity: 0; }
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 46px;
  align-items: center;
}
.hero-tag {
  display: inline-block;
  background: rgba(255, 255, 255, 0.13);
  border: 1px solid rgba(255, 255, 255, 0.28);
  color: #e6f2f7;
  font-family: var(--font-heading);
  font-size: 13.5px;
  font-weight: 500;
  padding: 6px 16px;
  border-radius: 40px;
  margin-bottom: 20px;
}
.hero-h1 {
  font-family: var(--font-heading);
  font-size: clamp(31px, 5.1vw, 53px);
  font-weight: 600;
  letter-spacing: -0.022em;
  line-height: 1.12;
  margin-bottom: 20px;
}
.hero-p {
  font-size: clamp(15.5px, 2vw, 17.5px);
  color: #d7e6ed;
  margin-bottom: 28px;
  max-width: 600px;
}
.hero-guarantee {
  margin-top: 20px;
  font-size: 14px;
  color: #cadde5;
}
.hero-image-wrap { position: relative; display: flex; justify-content: center; }
.hero-glow {
  position: absolute;
  width: 78%; height: 78%;
  top: 11%; left: 11%;
  background: radial-gradient(circle, rgba(142, 198, 217, 0.4) 0%, transparent 66%);
  filter: blur(34px);
}
.hero-product-wrap { position: relative; z-index: 2; max-width: 430px; }
.hero-product-wrap img { border-radius: 20px; }
.hero-wave { position: absolute; bottom: -1px; left: 0; width: 100%; line-height: 0; z-index: 1; }
.hero-wave svg { width: 100%; height: 72px; display: block; }

/* ===== WHY US / TRUST BADGES ===== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(198px, 1fr));
  gap: 22px;
}
.why-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
}
.why-card:hover { transform: translateY(-4px); box-shadow: var(--card-shadow-hover); border-color: var(--sky); }
.why-icon { width: 74px; height: 74px; margin: 0 auto 15px; }
.why-icon img { width: 100%; height: 100%; object-fit: contain; }
.why-card h3 { font-family: var(--font-heading); font-size: 17px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.why-card p { font-size: 14.5px; color: var(--gray); }

/* ===== WHAT IS ===== */
.what-inner { display: grid; grid-template-columns: 0.92fr 1.08fr; gap: 50px; align-items: start; }
/* the image holds position while the longer text column scrolls past it.
   The offset tracks the live header height (--header-h is set in script.js)
   so it stays correct when the promo bar collapses. */
.what-image { position: sticky; top: calc(var(--header-h, 105px) + 28px); align-self: start; }
.what-image img { border-radius: var(--radius); }
.what-content h2 {
  font-family: var(--font-heading);
  font-size: clamp(25px, 4vw, 38px);
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ink);
  line-height: 1.18;
  margin-bottom: 18px;
}
.what-content p { margin-bottom: 16px; color: #3c4f59; }
.what-content .btn { margin-top: 8px; }

/* ===== ADVANTAGES ===== */
.advantages-intro { max-width: 760px; margin: 0 auto 34px; text-align: center; color: var(--gray); font-size: 16.5px; }
.advantages-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(330px, 1fr)); gap: 16px; }
.advantage-row {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--teal);
  border-radius: var(--radius-sm);
  padding: 17px 20px;
}
.advantage-check {
  flex-shrink: 0;
  width: 25px; height: 25px;
  background: var(--tint-2);
  color: var(--teal);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700;
  margin-top: 2px;
}
.advantage-row p { font-size: 15.3px; color: #3c4f59; }
.advantage-row strong { color: var(--ink); }

/* ===== INGREDIENTS ===== */
.ing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(262px, 1fr)); gap: 22px; margin-bottom: 44px; }
.ing-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: var(--transition);
}
.ing-card:hover { transform: translateY(-4px); box-shadow: var(--card-shadow-hover); border-color: var(--sky); }
.ing-icon { font-size: 30px; margin-bottom: 12px; }
.ing-card h3 { font-family: var(--font-heading); font-size: 19px; font-weight: 600; color: var(--ink); margin-bottom: 9px; }
.ing-card p { font-size: 15px; color: var(--gray); margin-bottom: 14px; }
.ing-benefit {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--teal-dark);
  background: var(--tint-2);
  padding: 4px 13px;
  border-radius: 40px;
}
.supplement-facts {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
  max-width: 780px;
  margin: 0 auto;
  box-shadow: var(--card-shadow);
}
.supplement-facts h3 { font-family: var(--font-heading); font-size: 19px; font-weight: 600; color: var(--ink); margin-bottom: 16px; }
.facts-table { width: 100%; border-collapse: collapse; font-size: 14.8px; }
.facts-table th {
  text-align: left;
  background: var(--deep);
  color: var(--white);
  font-family: var(--font-heading);
  font-weight: 600;
  padding: 11px 14px;
}
.facts-table th:first-child { border-radius: var(--radius-sm) 0 0 0; }
.facts-table th:last-child { border-radius: 0 var(--radius-sm) 0 0; }
.facts-table td { padding: 11px 14px; border-bottom: 1px solid var(--mist); color: #3c4f59; }
.facts-table tr:nth-child(even) td { background: var(--tint); }
.facts-note { font-size: 13.5px; color: var(--gray); margin-top: 14px; }

/* ===== PROS & CONS ===== */
.pros-cons-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.double-border { border: 2px solid var(--deep); border-radius: var(--radius); padding: 7px; background: var(--white); }
.double-border-inner { border: 1px solid var(--mist); border-radius: 10px; padding: 26px; height: 100%; }
.pros-col { border-color: var(--ok); }
.cons-col { border-color: var(--gold); }
.pros-cons-col h3 { font-family: var(--font-heading); font-size: 20px; font-weight: 600; color: var(--ink); margin-bottom: 16px; }
.pros-cons-col li { display: flex; gap: 11px; align-items: flex-start; margin-bottom: 12px; font-size: 15.2px; color: #3c4f59; }
.icon-pro, .icon-con {
  flex-shrink: 0;
  width: 21px; height: 21px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700;
  margin-top: 3px;
}
.icon-pro { background: #dcf0e6; color: var(--ok); }
.icon-con { background: #f6ecd9; color: var(--gold); }

/* ===== BENEFIT TILES ===== */
.tile-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 24px; }
.tile-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.tile-card:hover { transform: translateY(-4px); box-shadow: var(--card-shadow-hover); }
.tile-img-wrap { aspect-ratio: 1 / 1; overflow: hidden; }
.tile-img-wrap img { width: 100%; height: 100%; object-fit: cover; }
.tile-card > p { padding: 20px 22px; font-size: 15.2px; color: #3c4f59; }
.tile-cta { display: flex; align-items: center; justify-content: center; text-align: center; }
.tile-cta p { padding: 32px; }

/* ===== REVIEWS ===== */
.reviews-intro { max-width: 720px; margin: 0 auto 26px; text-align: center; font-size: 14.8px; color: var(--gray); }
.reviews-rating { display: flex; justify-content: center; margin-bottom: 30px; }
.reviews-rating img { max-width: 260px; }
.reviews-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.review-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--card-shadow);
}
.review-top { display: flex; gap: 14px; align-items: center; margin-bottom: 15px; }
.review-avatar { width: 58px; height: 58px; border-radius: 50%; object-fit: cover; border: 2px solid var(--mist); }
.review-top strong { display: block; font-family: var(--font-heading); font-size: 16px; color: var(--ink); }
.review-location { font-size: 13px; color: var(--gray); }
.stars { font-size: 13px; letter-spacing: 1px; }
.review-card > p { font-size: 15.2px; color: #3c4f59; font-style: italic; }

/* ===== PRICING ===== */
.pricing-note { max-width: 740px; margin: 0 auto 34px; text-align: center; font-size: 14.6px; }
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(276px, 1fr)); gap: 26px; align-items: start; }
.price-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px 24px 26px;
  text-align: center;
  color: #22343d;
  box-shadow: 0 8px 26px rgba(0, 0, 0, 0.16);
  position: relative;
  transition: var(--transition);
}
.price-card:hover { transform: translateY(-5px); }
.price-card.popular { border: 3px solid var(--gold); padding-top: 38px; }
.popular-badge {
  position: absolute;
  top: 0; left: 50%;
  transform: translate(-50%, -50%);
  background: var(--gradient-gold);
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 6px 20px;
  border-radius: 40px;
  white-space: nowrap;
}
.price-label { font-family: var(--font-heading); font-size: 13px; font-weight: 600; color: var(--teal); letter-spacing: 0.04em; margin-bottom: 4px; }
.price-bottles { font-family: var(--font-heading); font-size: 24px; font-weight: 600; color: var(--ink); }
.price-supply { font-size: 14.5px; color: var(--gray); margin-bottom: 12px; }
.price-img { max-height: 172px; width: auto; margin: 0 auto 14px; }
.price-amount { font-family: var(--font-heading); margin-bottom: 3px; }
.price-amount .strike { color: var(--gray); text-decoration: line-through; font-size: 17px; margin-right: 7px; }
.price-amount strong { font-size: 33px; font-weight: 600; color: var(--ink); }
.price-per { font-size: 15px; color: var(--teal-dark); font-weight: 600; margin-bottom: 6px; }
.price-save {
  display: inline-block;
  background: #f6ecd9;
  color: #8f6522;
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 40px;
  margin-bottom: 12px;
}
.price-badges { font-size: 13.5px; color: var(--gray); margin-bottom: 12px; }
.price-badges span { display: block; }
.cards-note { font-size: 12.5px; color: var(--gray); margin-top: 12px; }

/* ===== SCIENCE ACCORDION ===== */
.science-list { max-width: 880px; margin: 0 auto; }
.science-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  overflow: hidden;
}
.sci-header, .faq-header {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  text-align: left;
  padding: 18px 22px;
  font-family: var(--font-heading);
  font-size: 16.5px;
  font-weight: 600;
  color: var(--ink);
}
.acc-arrow { color: var(--teal); font-size: 13px; transition: transform 0.3s ease; flex-shrink: 0; }
.science-item.open .acc-arrow, .faq-item.open .acc-arrow { transform: rotate(180deg); }
.sci-body, .faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 22px;
}
.science-item.open .sci-body, .faq-item.open .faq-body { max-height: 900px; padding: 0 22px 20px; }
.sci-body p, .faq-body p { font-size: 15.3px; color: #3c4f59; margin-bottom: 12px; }
.sci-body p:last-child, .faq-body p:last-child { margin-bottom: 0; }
.sci-source { font-size: 13.3px !important; color: var(--gray) !important; }
.sci-source a { color: var(--teal-dark); text-decoration: underline; }
.science-disclaimer { max-width: 880px; margin: 26px auto 0; font-size: 14px; color: var(--gray); text-align: center; }

/* ===== GUARANTEE ===== */
.guarantee-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 36px;
  align-items: center;
  background: var(--tint);
  border: 1px solid var(--mist);
  border-radius: 22px;
  padding: 40px;
  max-width: 980px;
  margin: 0 auto;
}
.guarantee-badge img { max-width: 200px; margin: 0 auto; }
.guarantee-content h2 { font-family: var(--font-heading); font-size: clamp(23px, 3.4vw, 31px); font-weight: 600; color: var(--ink); margin-bottom: 18px; }
.guarantee-list li { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 14px; font-size: 15.3px; color: #3c4f59; }
.guarantee-list .check {
  flex-shrink: 0;
  width: 23px; height: 23px;
  background: var(--gold);
  color: var(--white);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px;
  margin-top: 2px;
}

/* ===== HOW TO TAKE ===== */
.section-banner {
  background: var(--deep);
  padding: 34px 20px;
  text-align: center;
}
.section-banner h2 {
  font-family: var(--font-heading);
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 600;
  color: var(--white);
}
.howto-list { max-width: 840px; margin: 0 auto; }
.howto-row { display: flex; gap: 20px; align-items: flex-start; margin-bottom: 24px; }
.howto-num {
  flex-shrink: 0;
  width: 42px; height: 42px;
  background: var(--gradient-btn);
  color: var(--white);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 600;
}
.howto-row h4 { font-family: var(--font-heading); font-size: 18px; font-weight: 600; color: var(--ink); margin-bottom: 5px; }
.howto-row p { font-size: 15.3px; color: #3c4f59; }

/* ===== REVIEWER / SAFETY PANEL ===== */
.reviewer-panel {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 44px;
  align-items: center;
  max-width: 1040px;
  margin: 46px auto 0;
  background: linear-gradient(145deg, #1b3d4d 0%, #295265 58%, #31647c 100%);
  border-radius: 22px;
  padding: 40px;
  box-shadow: 0 16px 44px rgba(20, 49, 63, 0.24);
}
.reviewer-photo img { border-radius: 16px; width: 100%; }
.reviewer-badge {
  display: inline-block;
  border: 1px solid rgba(232, 211, 174, 0.45);
  background: rgba(232, 211, 174, 0.10);
  color: var(--gold-soft);
  font-family: var(--font-heading);
  font-size: 13.5px;
  font-weight: 600;
  padding: 7px 18px;
  border-radius: 40px;
  margin-bottom: 20px;
}
.reviewer-quote {
  font-family: var(--font-heading);
  font-size: clamp(20px, 2.5vw, 29px);
  font-weight: 600;
  line-height: 1.26;
  letter-spacing: -0.015em;
  color: var(--white);
  margin-bottom: 20px;
}
.reviewer-name {
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 600;
  color: var(--gold-soft);
  margin-bottom: 2px;
}
.reviewer-role { font-size: 14.5px; color: #a9c6d3; margin-bottom: 18px; }
.reviewer-text { font-size: 15.2px; color: #cddfe7; margin-bottom: 14px; }
.reviewer-pills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.reviewer-pills span {
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.07);
  color: #dceaf0;
  font-family: var(--font-heading);
  font-size: 12.8px;
  font-weight: 500;
  padding: 7px 13px;
  border-radius: 40px;
  white-space: nowrap;
}

/* ===== BUYER'S GUIDE ===== */
.buyers-guide {
  max-width: 880px;
  margin: 0 auto;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px;
}
.buyers-guide h3 { font-family: var(--font-heading); font-size: 20px; font-weight: 600; color: var(--ink); margin: 28px 0 10px; }
.buyers-guide h3:first-child { margin-top: 0; }
.buyers-guide p { font-size: 15.4px; color: #3c4f59; margin-bottom: 8px; }

/* ===== FAQ ===== */
.faq-list { max-width: 880px; margin: 0 auto; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-item.open { border-color: var(--sky); }

/* ===== FINAL CTA ===== */
.final-cta { position: relative; background: var(--gradient-hero); color: var(--white); overflow: hidden; }
.final-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 44px; align-items: center; }
.final-content h2 { font-family: var(--font-heading); font-size: clamp(26px, 4vw, 40px); font-weight: 600; line-height: 1.16; margin-bottom: 14px; }
.final-content > p { color: #d3e4eb; margin-bottom: 20px; }
.final-price { margin-bottom: 22px; }
.final-special { font-family: var(--font-heading); font-size: clamp(20px, 3vw, 27px); font-weight: 600; color: var(--sky); }
.final-trust { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 22px; font-size: 14px; color: #cadde5; }
.final-img img { border-radius: var(--radius); }
.floating-shapes { position: absolute; inset: 0; pointer-events: none; }
.floating-shapes .shape { position: absolute; border-radius: 50%; background: rgba(255, 255, 255, 0.055); }
.shape.s1 { width: 220px; height: 220px; top: -60px; left: -50px; }
.shape.s2 { width: 150px; height: 150px; bottom: -40px; right: 12%; }
.shape.s3 { width: 96px; height: 96px; top: 32%; right: -30px; }

/* ===== FOOTER ===== */
.footer { background: var(--ink); color: #b9cbd4; padding: 58px 0 0; font-size: 14.6px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 36px; padding-bottom: 40px; }
.footer-brand .logo-text { color: var(--white); }
.footer-brand .nav-logo { margin-bottom: 14px; }
.footer-brand p { margin-bottom: 14px; }
.footer-credentials { font-size: 13.5px; color: #93aab6; }
.footer-credentials strong { color: #cfdde4; }
.footer-links-col h4 { font-family: var(--font-heading); font-size: 16px; font-weight: 600; color: var(--white); margin-bottom: 14px; }
.footer-links-col a { display: block; margin-bottom: 9px; transition: color 0.25s ease; }
.footer-links-col a:hover { color: var(--sky); }
.footer-disclaimer { border-top: 1px solid rgba(255, 255, 255, 0.11); padding-top: 22px; padding-bottom: 22px; }
.footer-disclaimer p { font-size: 12.8px; color: #8ba4b0; line-height: 1.75; }
.footer-copy { border-top: 1px solid rgba(255, 255, 255, 0.11); padding: 16px 0; }
.footer-copy p { font-size: 13px; color: #8ba4b0; text-align: center; }
.footer-copy a { color: var(--sky); }

/* ===== STICKY MOBILE CTA ===== */
.sticky-cta {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 995;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  background: var(--white);
  border-top: 1px solid var(--line);
  box-shadow: 0 -4px 18px rgba(20, 49, 63, 0.14);
  padding: 10px 16px;
  transform: translateY(105%);
  transition: transform 0.3s ease;
}
.sticky-cta.vis { transform: translateY(0); }
.sticky-cta-text { font-size: 13px; color: var(--gray); line-height: 1.35; }
.sticky-cta-text strong { display: block; font-family: var(--font-heading); font-size: 15.5px; color: var(--ink); }
.sticky-cta .btn { padding: 11px 20px; font-size: 15px; white-space: nowrap; }

/* ===== EXIT POPUP ===== */
.exit-overlay {
  position: fixed; inset: 0;
  background: rgba(20, 49, 63, 0.66);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  opacity: 0; visibility: hidden;
  transition: var(--transition);
  z-index: 2000;
}
.exit-overlay.show { opacity: 1; visibility: visible; }
.exit-popup {
  position: relative;
  background: var(--white);
  border-radius: 20px;
  padding: 40px 34px 32px;
  max-width: 460px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}
.exit-close {
  position: absolute; top: 12px; right: 14px;
  background: none; border: none; cursor: pointer;
  font-size: 19px; color: var(--gray); line-height: 1;
}
.exit-badge {
  display: inline-block;
  background: var(--tint-2);
  color: var(--teal-dark);
  font-family: var(--font-heading);
  font-size: 12.5px;
  font-weight: 600;
  padding: 5px 15px;
  border-radius: 40px;
  margin-bottom: 14px;
}
.exit-popup h3 { font-family: var(--font-heading); font-size: 25px; font-weight: 600; color: var(--ink); margin-bottom: 10px; }
.exit-popup p { font-size: 15.4px; color: #3c4f59; margin-bottom: 20px; }
.exit-cta {
  display: inline-block;
  background: var(--gradient-btn);
  color: var(--white);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 16px;
  padding: 14px 32px;
  border-radius: 50px;
}
.exit-small { font-size: 13px !important; color: var(--gray) !important; margin: 14px 0 0 !important; }

/* ===== SCROLL TOP ===== */
.scroll-top {
  position: fixed;
  bottom: 22px; right: 22px;
  width: 46px; height: 46px;
  background: var(--deep);
  color: var(--white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 19px;
  opacity: 0; visibility: hidden;
  transition: var(--transition);
  z-index: 990;
  box-shadow: 0 6px 18px rgba(20, 49, 63, 0.3);
}
.scroll-top.show { opacity: 1; visibility: visible; }
.scroll-top:hover { background: var(--teal); }

/* ===== STANDALONE CONTENT PAGES ===== */
.page-hero { background: var(--gradient-hero); color: var(--white); padding: 56px 0 46px; }
.page-breadcrumb { font-size: 13.5px; color: #b8d0da; margin-bottom: 14px; }
.page-breadcrumb a { color: var(--sky); }
.page-eyebrow {
  display: inline-block;
  background: rgba(255, 255, 255, 0.13);
  border: 1px solid rgba(255, 255, 255, 0.26);
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 500;
  padding: 5px 15px;
  border-radius: 40px;
  margin-bottom: 15px;
}
.page-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(27px, 4.4vw, 43px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.16;
  max-width: 900px;
  margin-bottom: 13px;
}
.page-byline { font-size: 14px; color: #bdd4de; }
.page-body { background: var(--tint); padding: 54px 0 70px; }
.page-content {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px;
  max-width: 840px;
  margin: 0 auto;
  box-shadow: var(--card-shadow);
}
.page-content h2 { font-family: var(--font-heading); font-size: clamp(20px, 3vw, 25px); font-weight: 600; color: var(--ink); margin: 32px 0 12px; }
.page-content h2:first-child { margin-top: 0; }
.page-content p { font-size: 16px; color: #3c4f59; margin-bottom: 15px; }
.page-content ul { margin: 0 0 16px 20px; list-style: disc; }
.page-content li { font-size: 16px; color: #3c4f59; margin-bottom: 9px; }
.page-content a { color: var(--teal-dark); text-decoration: underline; }
.page-content .src { font-size: 13.4px; color: var(--gray); }
.page-content .callout {
  background: var(--tint);
  border-left: 4px solid var(--teal);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
  margin: 22px 0;
  font-size: 15.3px;
}
.continue-reading { max-width: 840px; margin: 30px auto 0; text-align: center; }
.continue-reading h4 { font-family: var(--font-heading); font-size: 17px; font-weight: 600; color: var(--ink); margin-bottom: 14px; }
.continue-reading-links { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.continue-reading-links a {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 50px;
  padding: 9px 20px;
  font-size: 14.5px;
  color: var(--teal-dark);
  font-weight: 600;
  transition: var(--transition);
}
.continue-reading-links a:hover { border-color: var(--teal); background: var(--tint-2); }
.page-cta {
  max-width: 840px;
  margin: 34px auto 0;
  background: var(--deep);
  color: var(--white);
  border-radius: var(--radius);
  padding: 38px 30px;
  text-align: center;
}
.page-cta h3 { font-family: var(--font-heading); font-size: 25px; font-weight: 600; margin-bottom: 10px; }
.page-cta p { color: #cfe2ea; margin-bottom: 20px; }

/* ===== ANIMATIONS ===== */
.fade-up, .fade-left, .fade-right { opacity: 0; transition: opacity 0.65s ease, transform 0.65s ease; }
.fade-up { transform: translateY(26px); }
.fade-left { transform: translateX(-26px); }
.fade-right { transform: translateX(26px); }
.fade-up.visible, .fade-left.visible, .fade-right.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fade-up, .fade-left, .fade-right { opacity: 1; transform: none; transition: none; }
  .hero-particle { display: none; }
}

/* ===== RESPONSIVE — TABLET ===== */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; gap: 34px; }
  .hero-p { margin-left: auto; margin-right: auto; }
  .hero-product-wrap { max-width: 340px; }
  .what-inner { grid-template-columns: 1fr; gap: 30px; }
  /* stacked layout — sticking would pin the image over the text */
  .what-image { position: static; }
  .final-inner { grid-template-columns: 1fr; text-align: center; }
  .final-trust { justify-content: center; }
  .final-img { max-width: 330px; margin: 0 auto; }
  .guarantee-card { grid-template-columns: 1fr; text-align: center; padding: 32px 24px; }
  .guarantee-list li { text-align: left; }
  .reviewer-panel { grid-template-columns: 1fr; gap: 28px; padding: 32px 26px; text-align: center; }
  .reviewer-photo { max-width: 280px; margin: 0 auto; }
  .reviewer-pills { justify-content: center; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

/* ===== RESPONSIVE — MOBILE ===== */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0; right: 0;
    width: min(290px, 84vw);
    height: 100vh;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 86px 26px 26px;
    transform: translateX(105%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    box-shadow: -8px 0 28px rgba(20, 49, 63, 0.16);
    overflow-y: auto;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-link { width: 100%; padding: 12px 0; border-bottom: 1px solid var(--mist); font-size: 16px; }
  .nav-link::after { display: none; }
  .btn-nav { width: 100%; margin-top: 16px; }
  /* the drawer is positioned (z-index 999) and the hamburger is not, so without
     its own stacking context the close "X" paints underneath the open drawer */
  .hamburger { display: flex; position: relative; z-index: 1001; }
  .pros-cons-grid { grid-template-columns: 1fr; }
  .sticky-cta { display: flex; }
  .scroll-top { bottom: 84px; }
  .page-content, .buyers-guide, .supplement-facts { padding: 26px 22px; }
  .facts-table { font-size: 13.6px; }
  .facts-table th, .facts-table td { padding: 9px 10px; }
}

/* ===== RESPONSIVE — SMALL PHONES ===== */
@media (max-width: 480px) {
  .section-pad { padding: 52px 0; }
  .section-header { margin-bottom: 34px; }
  .hero { padding: 48px 0 80px; }
  .hero-h1 { font-size: 30px; }
  .hero-p { font-size: 15.3px; }
  .btn-hero { padding: 15px 28px; font-size: 16px; width: 100%; }
  .hero-guarantee { font-size: 13px; }
  .why-card, .ing-card, .review-card { padding: 22px 18px; }
  .advantage-row { padding: 14px 16px; }
  .advantage-row p { font-size: 14.8px; }
  .price-card { padding: 24px 18px; }
  .price-amount strong { font-size: 29px; }
  .howto-row { gap: 14px; margin-bottom: 20px; }
  .howto-num { width: 36px; height: 36px; font-size: 16px; }
  .reviewer-panel { padding: 26px 20px; margin-top: 34px; }
  .reviewer-quote { font-size: 20px; }
  .reviewer-text { font-size: 14.8px; }
  .sci-header, .faq-header { font-size: 15.4px; padding: 15px 17px; }
  .science-item.open .sci-body, .faq-item.open .faq-body { padding: 0 17px 17px; }
  .exit-popup { padding: 34px 22px 26px; }
  .exit-popup h3 { font-size: 21px; }
  .footer-inner { grid-template-columns: 1fr; gap: 26px; }
  .footer { padding-top: 44px; }
  .page-hero { padding: 40px 0 34px; }
  .page-cta { padding: 30px 20px; }
}