:root {
  color-scheme: light;
  --ink: #102a33;
  --muted: #5b6f76;
  --line: #d8e1e4;
  --surface: #f5f8f8;
  --water: #006b78;
  --water-dark: #004954;
  --accent: #e9b949;
  --white: #ffffff;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.55;
}

a {
  color: inherit;
}

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

.container {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
}

.nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  color: var(--water-dark);
  font-size: 21px;
  font-weight: 800;
  text-decoration: none;
}

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

.nav-links a {
  text-decoration: none;
}

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  color: var(--white);
  background: var(--water);
  border: 1px solid var(--water);
  border-radius: 6px;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
}

.button:hover {
  background: var(--water-dark);
  border-color: var(--water-dark);
}

.button.secondary {
  color: var(--water-dark);
  background: var(--white);
  border-color: var(--line);
}

.hero {
  min-height: 560px;
  display: grid;
  align-items: end;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(0, 31, 38, 0.9), rgba(0, 48, 58, 0.3)),
    url("https://ueeshop.ly200-cdn.com/u_file/UPAZ/UPAZ121/2509/05/products/43.png") center/cover no-repeat;
}

.hero-content {
  max-width: 670px;
  padding: 96px 0 86px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.12;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(38px, 6vw, 68px);
}

h2 {
  margin-bottom: 14px;
  font-size: 32px;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.hero p {
  max-width: 590px;
  margin: 0 0 28px;
  color: #e2eef0;
  font-size: 18px;
}

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

.section {
  padding: 72px 0;
}

.section.alt {
  background: var(--surface);
}

.section-heading {
  max-width: 680px;
  margin-bottom: 32px;
}

.section-heading p,
.muted {
  color: var(--muted);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.product-card {
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.product-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  background: #f8fafb;
}

.product-card-body {
  padding: 20px;
}

.product-card p {
  min-height: 72px;
  color: var(--muted);
}

.price {
  color: var(--water-dark);
  font-size: 20px;
  font-weight: 800;
}

.use-grid,
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.use-item,
.feature-item {
  padding: 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.use-item strong,
.feature-item strong {
  display: block;
  margin-bottom: 6px;
}

.product-hero {
  padding: 64px 0;
  background: var(--surface);
}

.product-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 56px;
}

.product-hero img {
  width: 100%;
  max-height: 520px;
  object-fit: contain;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.product-hero h1 {
  font-size: clamp(36px, 5vw, 58px);
}

.feature-list {
  padding-left: 20px;
}

.feature-list li {
  margin-bottom: 9px;
}

.spec-table,
.compare-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
}

.spec-table th,
.spec-table td,
.compare-table th,
.compare-table td {
  padding: 14px 16px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.spec-table th,
.compare-table th {
  color: var(--water-dark);
  background: #eef4f4;
}

.table-wrap {
  overflow-x: auto;
}

.notice {
  padding: 16px 18px;
  color: #654d08;
  background: #fff8df;
  border: 1px solid #ecd58c;
  border-radius: 6px;
}

.lp-hero {
  padding: 76px 0;
  background: linear-gradient(180deg, #eef7f7 0%, #ffffff 100%);
}

.lp-hero-grid,
.lp-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 56px;
}

.lp-lead {
  max-width: 640px;
  color: var(--muted);
  font-size: 19px;
}

.lp-visual {
  position: relative;
  padding: 34px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.lp-visual img {
  width: 100%;
  max-height: 500px;
  object-fit: contain;
}

.lp-price {
  position: absolute;
  right: 22px;
  bottom: 22px;
  padding: 10px 14px;
  color: var(--water-dark);
  background: #fff8df;
  border: 1px solid #ecd58c;
  border-radius: 6px;
  font-size: 22px;
  font-weight: 800;
}

.lp-proof-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

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

.faq-list details {
  padding: 18px 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.faq-list summary {
  color: var(--water-dark);
  cursor: pointer;
  font-weight: 800;
}

.faq-list p {
  margin-bottom: 0;
  color: var(--muted);
}

.lp-cta {
  padding: 56px 0;
  color: var(--white);
  background: #082d35;
}

.lp-cta .eyebrow,
.lp-cta p {
  color: #dbe9eb;
}

.lp-cta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-footer {
  padding: 36px 0;
  color: #c9d8db;
  background: #082d35;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
}

.footer-row a {
  color: var(--white);
}

@media (max-width: 900px) {
  .product-grid,
  .use-grid,
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .lp-hero-grid,
  .lp-split,
  .lp-proof-grid {
    grid-template-columns: 1fr;
  }

  .lp-cta-row {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .nav-links a:not(.button) {
    display: none;
  }

  .hero {
    min-height: 510px;
  }

  .hero-content {
    padding: 72px 0 62px;
  }

  h1 {
    font-size: 40px;
  }

  h2 {
    font-size: 27px;
  }

  .section {
    padding: 52px 0;
  }

  .product-grid,
  .use-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .product-card p {
    min-height: auto;
  }

  .footer-row {
    display: block;
  }
}