:root {
  color-scheme: light;
  --ink: #182236;
  --muted: #657184;
  --line: #dbe8ef;
  --surface: #ffffff;
  --soft: #eff8fb;
  --blue: #6cbdd5;
  --blue-deep: #216b88;
  --green: #8abf8f;
  --gold: #caa766;
  --shadow: 0 18px 55px rgba(33, 107, 136, 0.16);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #f8fbfc;
  color: var(--ink);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(160px, 1fr) auto auto;
  align-items: center;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(219, 232, 239, 0.9);
  backdrop-filter: blur(16px);
}

.brand {
  display: grid;
  gap: 1px;
}

.brand-mark {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 26px;
  letter-spacing: 0;
}

.brand-sub {
  color: var(--muted);
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
}

.header-cta,
.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 700;
  white-space: nowrap;
}

.header-cta,
.primary-button {
  background: var(--blue-deep);
  color: white;
  box-shadow: 0 10px 28px rgba(33, 107, 136, 0.22);
}

.secondary-button {
  border: 1px solid var(--line);
  background: white;
  color: var(--blue-deep);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 520px);
  align-items: center;
  gap: clamp(28px, 5vw, 70px);
  min-height: calc(100vh - 74px);
  padding: clamp(34px, 6vw, 86px) clamp(18px, 5vw, 72px) 48px;
  background:
    radial-gradient(circle at 15% 20%, rgba(138, 191, 143, 0.18), transparent 30%),
    linear-gradient(135deg, #ffffff 0%, #eef8fb 58%, #f7fbff 100%);
}

.hero-copy {
  max-width: 690px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue-deep);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 20px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(44px, 7vw, 86px);
  font-weight: 500;
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(30px, 4vw, 52px);
  font-weight: 500;
  line-height: 1.06;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 18px;
  letter-spacing: 0;
}

.lead,
.section-copy p,
.offer-copy p,
.cert-section p,
.faq p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 22px;
}

.trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.trust-strip span {
  padding: 9px 12px;
  border: 1px solid rgba(33, 107, 136, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
  color: var(--blue-deep);
  font-size: 13px;
  font-weight: 700;
}

.hero-media {
  overflow: hidden;
  border: 1px solid rgba(219, 232, 239, 0.9);
  border-radius: 8px;
  background: white;
  box-shadow: var(--shadow);
}

.proof-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.proof-band article {
  display: grid;
  gap: 4px;
  min-height: 132px;
  align-content: center;
  padding: 24px clamp(18px, 4vw, 50px);
  background: white;
}

.proof-band strong {
  color: var(--blue-deep);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(34px, 5vw, 58px);
  font-weight: 500;
}

.proof-band span {
  color: var(--muted);
  font-size: 15px;
}

.split-section,
.offer,
.cert-section {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.8fr);
  align-items: center;
  gap: clamp(28px, 5vw, 68px);
  padding: clamp(58px, 7vw, 96px) clamp(18px, 5vw, 72px);
  background: white;
}

.image-panel,
.offer-media,
.cert-section figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
  box-shadow: var(--shadow);
}

.check-list {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  color: var(--ink);
  font-weight: 700;
}

.check-list li::before {
  position: absolute;
  left: 0;
  top: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--green);
  color: white;
  content: "✓";
  display: grid;
  place-items: center;
  font-size: 12px;
}

.ingredients,
.reviews,
.faq {
  padding: clamp(58px, 7vw, 96px) clamp(18px, 5vw, 72px);
}

.section-heading {
  max-width: 820px;
  margin-bottom: 28px;
}

.ingredient-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.ingredient-grid article {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: 0 8px 24px rgba(24, 34, 54, 0.06);
}

.ingredient-grid article h3,
.ingredient-grid article p {
  padding: 0 16px;
}

.ingredient-grid article h3 {
  margin-top: 16px;
}

.ingredient-grid article p {
  min-height: 86px;
  color: var(--muted);
  line-height: 1.6;
}

.reviews {
  background: #f2f8fb;
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.review-grid img {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: 0 12px 32px rgba(33, 107, 136, 0.12);
}

.offer {
  background:
    linear-gradient(120deg, rgba(33, 107, 136, 0.08), transparent 48%),
    white;
}

.price-box {
  display: inline-grid;
  gap: 4px;
  margin-top: 12px;
  padding: 16px 18px;
  border: 1px solid rgba(202, 167, 102, 0.38);
  border-radius: 8px;
  background: #fffaf0;
}

.price-box span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.price-box strong {
  color: #8b611d;
  font-size: 25px;
}

.cert-section {
  background: #f8fbfc;
}

.cert-section figure {
  max-width: 470px;
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 880px;
}

details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: 0 8px 20px rgba(24, 34, 54, 0.04);
}

summary {
  cursor: pointer;
  padding: 18px 20px;
  font-weight: 800;
}

details p {
  margin: 0;
  padding: 0 20px 20px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(18px, 5vw, 72px);
  background: var(--ink);
  color: white;
}

.site-footer div {
  display: grid;
  gap: 4px;
}

.site-footer span {
  color: rgba(255, 255, 255, 0.68);
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: minmax(120px, 1fr) auto;
  }

  .nav-links {
    display: none;
  }

  .hero,
  .split-section,
  .offer,
  .cert-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-media {
    max-width: 560px;
  }

  .ingredient-grid,
  .review-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .site-header {
    gap: 10px;
    padding: 12px 14px;
  }

  .brand-sub {
    display: none;
  }

  .header-cta {
    min-height: 40px;
    padding: 0 12px;
    font-size: 13px;
  }

  .hero {
    padding-top: 32px;
  }

  h1 {
    font-size: 42px;
  }

  .proof-band,
  .ingredient-grid,
  .review-grid {
    grid-template-columns: 1fr;
  }

  .proof-band article {
    min-height: 104px;
  }

  .site-footer {
    display: grid;
  }
}