:root {
  --ink: #111318;
  --muted: #5d6572;
  --line: #dce2ea;
  --surface: #f6f8fb;
  --white: #ffffff;
  --green: #19a974;
  --blue: #1463ff;
  --orange: #ff7a1a;
  --shadow: 0 24px 70px rgba(17, 19, 24, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--white);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 16px clamp(18px, 5vw, 64px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.brand,
.main-nav,
.hero-actions,
.trust-strip,
.footer-links {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 900;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: var(--white);
  border-radius: 8px;
  background: linear-gradient(135deg, var(--green), var(--blue));
  font-size: 13px;
}

.main-nav {
  gap: clamp(14px, 2vw, 28px);
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.main-nav a:hover,
.footer-links a:hover {
  color: var(--blue);
}

.header-action,
.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-weight: 800;
}

.header-action,
.button.primary {
  color: var(--white);
  background: var(--ink);
  box-shadow: 0 12px 26px rgba(17, 19, 24, 0.18);
}

.header-action {
  min-width: 104px;
  padding: 0 18px;
}

.button {
  padding: 0 22px;
}

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

.button.ghost {
  border: 1px solid rgba(255, 255, 255, 0.28);
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
}

.button.small {
  min-height: 40px;
  width: 100%;
  color: var(--white);
  background: var(--ink);
  font-size: 14px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.82fr);
  gap: clamp(32px, 5vw, 76px);
  align-items: center;
  min-height: calc(100vh - 74px);
  padding: clamp(42px, 7vw, 88px) clamp(18px, 5vw, 64px) 54px;
  background:
    linear-gradient(120deg, rgba(25, 169, 116, 0.13), transparent 36%),
    linear-gradient(300deg, rgba(20, 99, 255, 0.12), transparent 36%),
    var(--surface);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 900px;
  margin-bottom: 18px;
  font-size: clamp(42px, 6.8vw, 86px);
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.02;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 9px;
  font-size: 20px;
  line-height: 1.15;
}

.hero-text {
  max-width: 700px;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.6;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 12px;
  margin: 30px 0 24px;
}

.trust-strip {
  flex-wrap: wrap;
  gap: 10px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.trust-strip span {
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
}

.hero-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.hero-panel img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.hero-panel img:first-child {
  grid-row: span 2;
  align-self: center;
}

.section,
.feature-band,
.routine-band,
.cta {
  padding: clamp(54px, 7vw, 96px) clamp(18px, 5vw, 64px);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 30px;
}

.category-grid,
.product-grid,
.goal-grid,
.benefit-grid,
.mini-features {
  display: grid;
  gap: 16px;
}

.category-grid,
.product-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.category-card,
.product-card,
.goal-grid article,
.faq details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.category-card {
  padding: 14px;
}

.category-card img,
.product-image img {
  width: 100%;
  aspect-ratio: 1.06;
  object-fit: cover;
  border-radius: 6px;
  background: var(--surface);
}

.category-card h3,
.category-card p,
.category-card a {
  margin-left: 4px;
  margin-right: 4px;
}

.category-card h3 {
  margin-top: 18px;
}

.category-card p,
.product-info p,
.goal-grid p,
.routine-band p,
.site-footer p,
.faq p {
  color: var(--muted);
  line-height: 1.55;
}

.category-card a {
  color: var(--blue);
  font-weight: 900;
}

.feature-band {
  display: grid;
  grid-template-columns: 0.72fr 1fr;
  gap: 34px;
  align-items: start;
  color: var(--white);
  background: var(--ink);
}

.feature-band .eyebrow {
  color: #6ef0bb;
}

.benefit-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.benefit-grid span,
.mini-features span {
  min-height: 56px;
  display: flex;
  align-items: center;
  padding: 16px;
  border-radius: 8px;
  font-weight: 800;
}

.benefit-grid span {
  background: rgba(255, 255, 255, 0.1);
}

.goal-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.goal-grid article {
  min-height: 180px;
  padding: 24px;
}

.product-card {
  overflow: hidden;
}

.product-info {
  display: grid;
  gap: 12px;
  padding: 18px;
}

.product-info strong {
  font-size: 20px;
}

.routine-band {
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  gap: 34px;
  align-items: center;
  background: var(--surface);
}

.mini-features {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.mini-features span {
  border: 1px solid var(--line);
  background: var(--white);
}

.cta {
  text-align: center;
  color: var(--white);
  background: linear-gradient(135deg, #101217, #173e37 52%, #0d44a3);
}

.cta .eyebrow {
  color: #85f0c4;
}

.cta h2 {
  max-width: 780px;
  margin: 0 auto 26px;
}

.faq {
  max-width: 980px;
  margin: 0 auto;
}

.faq .section-heading {
  display: block;
}

.faq details {
  padding: 20px 22px;
}

.faq details + details {
  margin-top: 12px;
}

.faq summary {
  cursor: pointer;
  font-weight: 900;
}

.faq p {
  margin: 14px 0 0;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px clamp(18px, 5vw, 64px);
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 8px 0 0;
}

.product-page {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  padding: clamp(42px, 7vw, 90px) clamp(18px, 5vw, 64px);
  background: var(--surface);
}

.product-gallery img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.product-detail h1 {
  font-size: clamp(38px, 5vw, 70px);
}

.product-detail .price {
  display: block;
  margin: 18px 0;
  font-size: 32px;
  font-weight: 900;
}

.product-detail ul {
  display: grid;
  gap: 10px;
  margin: 24px 0;
  padding: 0;
  list-style: none;
}

.product-detail li {
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  color: var(--muted);
  font-weight: 700;
}

.product-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.related-products {
  padding: 0 clamp(18px, 5vw, 64px) clamp(54px, 7vw, 96px);
  background: var(--surface);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.breadcrumb a {
  color: var(--blue);
}

.product-kicker {
  display: inline-flex;
  margin-bottom: 12px;
  padding: 8px 10px;
  border-radius: 8px;
  color: #075f42;
  background: rgba(25, 169, 116, 0.12);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.product-copy {
  max-width: 720px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

.product-meta-grid,
.seo-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.product-meta-grid {
  margin-top: 26px;
}

.meta-box,
.content-box {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.meta-box {
  padding: 16px;
}

.meta-box span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.meta-box strong {
  font-size: 17px;
}

.product-content {
  padding: clamp(42px, 6vw, 76px) clamp(18px, 5vw, 64px);
}

.content-box {
  padding: 24px;
}

.content-box p,
.content-box li {
  color: var(--muted);
  line-height: 1.6;
}

.content-box ul {
  display: grid;
  gap: 10px;
  padding-left: 20px;
}

.product-faq {
  margin-top: 20px;
}

.related-products .category-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.footer-links {
  gap: 18px;
  color: var(--muted);
  font-weight: 800;
}

@media (max-width: 920px) {
  .main-nav {
    display: none;
  }

  .hero,
  .feature-band,
  .routine-band,
  .product-page {
    grid-template-columns: 1fr;
  }

  .category-grid,
  .product-grid,
  .goal-grid,
  .product-meta-grid,
  .seo-grid,
  .related-products .category-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .site-header {
    padding: 12px 16px;
  }

  .header-action {
    display: none;
  }

  .hero {
    min-height: auto;
  }

  .hero-panel {
    grid-template-columns: 1fr;
  }

  .category-grid,
  .product-grid,
  .goal-grid,
  .product-meta-grid,
  .seo-grid,
  .related-products .category-grid,
  .benefit-grid,
  .mini-features {
    grid-template-columns: 1fr;
  }

  .section-heading,
  .site-footer {
    display: block;
  }

  .footer-links {
    margin-top: 18px;
  }
}