:root {
  color-scheme: light;
  --ink: #18212f;
  --muted: #5b6575;
  --line: #d8dee8;
  --paper: #ffffff;
  --soft: #f4f7fb;
  --teal: #0f7c78;
  --teal-dark: #095c5a;
  --coral: #c9553f;
  --gold: #b98217;
  --indigo: #4054a6;
  --shadow: 0 18px 45px rgba(24, 33, 47, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  font-family: Arial, Helvetica, sans-serif;
  background: var(--paper);
  color: var(--ink);
}

body {
  margin: 0;
  min-width: 320px;
}

a {
  color: inherit;
  text-decoration-color: rgba(15, 124, 120, 0.35);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--teal-dark);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 0 40px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

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

.site-nav a[aria-current="page"] {
  color: var(--teal-dark);
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  gap: 52px;
  align-items: center;
  width: min(1160px, calc(100% - 48px));
  min-height: calc(100vh - 160px);
  margin: 0 auto;
  padding: 56px 0 28px;
}

.intro-copy {
  max-width: 570px;
}

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

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(38px, 7vw, 68px);
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.05;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 21px;
  line-height: 1.2;
}

.lead {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

.intro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  background: var(--teal);
  color: white;
}

.button.primary:hover {
  background: var(--teal-dark);
  color: white;
}

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

.intro-media {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.catalog-preview,
.page {
  width: min(1160px, calc(100% - 48px));
  margin: 0 auto;
  padding: 56px 0;
}

.page.narrow {
  width: min(780px, calc(100% - 48px));
}

.section-heading,
.page-heading {
  max-width: 760px;
  margin-bottom: 32px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

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

.product-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.product-body {
  padding: 20px;
}

.product-type {
  margin-bottom: 8px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.product-body p:not(.product-type):not(.price) {
  color: var(--muted);
  line-height: 1.55;
}

.price,
.detail-price {
  margin: 12px 0 0;
  color: var(--ink);
  font-size: 22px;
  font-weight: 800;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(320px, 1.2fr);
  gap: 48px;
  width: min(1160px, calc(100% - 48px));
  margin: 16px auto 64px;
  padding: 48px 0;
  border-top: 1px solid var(--line);
}

.plain-list {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.65;
}

.breadcrumb {
  display: flex;
  gap: 10px;
  margin-bottom: 24px;
  color: var(--muted);
  font-size: 14px;
}

.breadcrumb span::before {
  content: "/";
  margin-right: 10px;
  color: var(--line);
}

.product-detail {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(0, 1fr);
  gap: 44px;
  align-items: center;
  margin-bottom: 52px;
}

.product-detail img {
  border: 1px solid var(--line);
  border-radius: 8px;
}

.detail-price {
  margin-bottom: 20px;
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.spec-grid > div,
.contact-panel,
.info-grid a,
.feature-list article,
.faq-list article,
.policy-list article {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  background: var(--soft);
}

.spec-grid h2,
.contact-panel h2,
.text-stack h2 {
  font-size: 22px;
}

.spec-grid ul {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.8;
}

.text-stack {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
}

.text-stack h2 {
  margin-top: 28px;
  color: var(--ink);
}

.contact-panel {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
}

.info-grid,
.feature-list,
.faq-list,
.policy-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.info-grid a {
  color: var(--muted);
  text-decoration: none;
}

.info-grid span {
  display: block;
  margin-bottom: 10px;
  color: var(--ink);
  font-size: 21px;
  font-weight: 800;
}

.info-grid p,
.feature-list p,
.faq-list p,
.policy-list p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.6;
}

.detail-section {
  margin-top: 52px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.site-footer p {
  margin-bottom: 0;
  font-weight: 800;
}

.site-footer nav {
  display: flex;
  gap: 18px;
}

@media (max-width: 860px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding: 18px 24px;
  }

  .site-nav {
    flex-wrap: wrap;
  }

  .intro,
  .split-section,
  .product-detail {
    grid-template-columns: 1fr;
  }

  .intro {
    min-height: 0;
    padding-top: 36px;
  }

  .product-grid,
  .spec-grid,
  .info-grid,
  .feature-list,
  .faq-list,
  .policy-list {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
    padding: 24px;
  }
}

@media (max-width: 520px) {
  .intro,
  .catalog-preview,
  .page,
  .page.narrow,
  .split-section {
    width: min(100% - 32px, 1160px);
  }

  h1 {
    font-size: 36px;
  }

  .lead {
    font-size: 16px;
  }
}