:root {
  color-scheme: light;
  --ink: #102328;
  --muted: #5d6d73;
  --line: #dce5e8;
  --panel: #ffffff;
  --soft: #f4f8f9;
  --aqua: #0b7f8f;
  --aqua-dark: #075b67;
  --gold: #c28a36;
  --shadow: 0 24px 80px rgba(16, 35, 40, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #fbfdfd;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 5vw, 64px);
  background: rgba(251, 253, 253, 0.9);
  border-bottom: 1px solid rgba(220, 229, 232, 0.9);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand img {
  width: 46px;
  height: 46px;
  object-fit: contain;
}

nav {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

nav a {
  padding: 10px 12px;
  border-radius: 8px;
}

nav a:hover {
  background: var(--soft);
  color: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  min-height: calc(100vh - 74px);
  padding: clamp(46px, 7vw, 92px) clamp(18px, 6vw, 84px) clamp(32px, 5vw, 64px);
  background:
    linear-gradient(115deg, rgba(11, 127, 143, 0.08), rgba(255, 255, 255, 0) 44%),
    radial-gradient(circle at 82% 18%, rgba(194, 138, 54, 0.16), rgba(255, 255, 255, 0) 28%);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--aqua-dark);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 20px;
  font-size: clamp(44px, 7vw, 84px);
  line-height: 0.96;
  letter-spacing: 0;
}

.lede {
  max-width: 650px;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: clamp(18px, 2.4vw, 23px);
}

.hero-actions,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 900;
  line-height: 1;
}

.button.primary {
  background: var(--aqua);
  color: #fff;
  box-shadow: 0 12px 24px rgba(11, 127, 143, 0.24);
}

.button.primary:hover {
  background: var(--aqua-dark);
}

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

.wide {
  width: 100%;
}

.hero-visual {
  position: relative;
}

.product-stage {
  display: grid;
  min-height: 480px;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(155deg, #ffffff, #edf6f7);
  box-shadow: var(--shadow);
}

.product-stage img {
  width: min(82%, 460px);
  filter: drop-shadow(0 24px 28px rgba(16, 35, 40, 0.22));
}

.metric-strip {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  width: min(92%, 520px);
  margin: -46px auto 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
  box-shadow: 0 18px 44px rgba(16, 35, 40, 0.12);
}

.metric-strip div {
  padding: 18px 14px;
  background: #fff;
  text-align: center;
}

.metric-strip strong {
  display: block;
  font-size: clamp(20px, 2.5vw, 30px);
  line-height: 1;
}

.metric-strip span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.trust-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-block: 1px solid var(--line);
  background: var(--ink);
  color: #eaf5f6;
}

.trust-band span {
  padding: 18px;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 13px;
  font-weight: 900;
  text-align: center;
  text-transform: uppercase;
}

.product-section,
.specs-section {
  padding: clamp(56px, 8vw, 104px) clamp(18px, 6vw, 84px);
}

.section-heading {
  max-width: 780px;
  margin-bottom: 34px;
}

.section-heading h2,
.inquiry h2 {
  margin-bottom: 12px;
  font-size: clamp(32px, 4.8vw, 58px);
  line-height: 1;
}

.section-heading p:not(.eyebrow),
.inquiry p {
  color: var(--muted);
  font-size: 18px;
}

.compact {
  max-width: 620px;
}

.product-detail {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr) minmax(320px, 440px);
  gap: 22px;
  align-items: stretch;
}

.gallery {
  display: grid;
  align-content: start;
  gap: 12px;
}

.thumb {
  display: grid;
  aspect-ratio: 1;
  place-items: center;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
}

.thumb.active {
  border-color: var(--aqua);
  box-shadow: 0 0 0 3px rgba(11, 127, 143, 0.12);
}

.main-image,
.buy-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 54px rgba(16, 35, 40, 0.08);
}

.main-image {
  display: grid;
  min-height: 540px;
  place-items: center;
  padding: clamp(22px, 4vw, 54px);
  background: linear-gradient(145deg, #ffffff, #f0f7f8);
}

.main-image img {
  max-height: 460px;
  object-fit: contain;
  filter: drop-shadow(0 18px 22px rgba(16, 35, 40, 0.18));
}

.buy-panel {
  padding: 28px;
}

.label {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.buy-panel h3 {
  margin-bottom: 4px;
  font-size: 42px;
  line-height: 1;
}

.price {
  margin-bottom: 18px;
  color: var(--aqua-dark);
  font-size: 28px;
  font-weight: 950;
}

.summary,
.note {
  color: var(--muted);
}

.quantity-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: 24px 0;
  font-weight: 900;
}

.stepper {
  display: grid;
  grid-template-columns: 42px 62px 42px;
  min-height: 42px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.stepper button,
.stepper input {
  border: 0;
  background: #fff;
  color: var(--ink);
  font: inherit;
  text-align: center;
}

.stepper button {
  cursor: pointer;
  font-size: 18px;
  font-weight: 900;
}

.stepper button:hover {
  background: var(--soft);
}

.stepper input {
  border-inline: 1px solid var(--line);
  font-weight: 900;
}

.note {
  margin: 14px 0 0;
  font-size: 14px;
}

.specs-section {
  background: var(--soft);
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.spec {
  min-height: 126px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.spec span {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.spec strong {
  display: block;
  font-size: 20px;
  line-height: 1.15;
}

.inquiry {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: clamp(42px, 6vw, 78px) clamp(18px, 6vw, 84px);
  background: var(--aqua-dark);
  color: #fff;
}

.inquiry .eyebrow,
.inquiry p {
  color: #d1eef2;
}

.inquiry .button.primary {
  flex: 0 0 auto;
  background: #fff;
  color: var(--aqua-dark);
  box-shadow: none;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 28px clamp(18px, 6vw, 84px);
  border-top: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
}

.site-footer > div:first-child {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
}

.site-footer img {
  width: 38px;
  height: 38px;
  object-fit: contain;
}

.site-footer p {
  margin: 0;
}

.footer-links a {
  font-weight: 800;
}

@media (max-width: 1000px) {
  .hero,
  .product-detail {
    grid-template-columns: 1fr;
  }

  .gallery {
    grid-template-columns: repeat(2, 78px);
    order: 2;
  }

  .main-image {
    min-height: 420px;
  }

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

@media (max-width: 720px) {
  .site-header,
  .site-footer,
  .inquiry {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    width: 100%;
    justify-content: space-between;
  }

  nav a {
    padding-inline: 8px;
  }

  .hero {
    min-height: auto;
  }

  .product-stage {
    min-height: 340px;
  }

  .metric-strip,
  .trust-band,
  .spec-grid {
    grid-template-columns: 1fr;
  }

  .metric-strip {
    margin-top: -26px;
  }

  .trust-band span {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  }

  .buy-panel {
    padding: 22px;
  }

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