:root {
  --blue: #0066cc;
  --blue-dark: #004f9f;
  --blue-on-dark: #2997ff;
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --soft: #f5f5f7;
  --pearl: #fafafc;
  --line: #e5e5ea;
  --dark: #050505;
  --tile: #272729;
  --white: #ffffff;
  color-scheme: light;
  font-family: "SF Pro Text", Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

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

.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 52px;
  background: rgba(0, 0, 0, 0.88);
  color: var(--white);
  backdrop-filter: blur(18px);
}

.nav-inner {
  width: min(1180px, calc(100% - 32px));
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-mark {
  width: 26px;
  height: 26px;
  border: 2px solid currentColor;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 11px;
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.84);
}

.nav-links a:hover {
  color: var(--white);
}

.language-switch {
  display: inline-flex;
  padding: 3px;
  gap: 2px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
}

.language-switch button {
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: rgba(255, 255, 255, 0.74);
  padding: 6px 10px;
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}

.language-switch button.is-active {
  background: var(--white);
  color: var(--ink);
}

.hero {
  min-height: calc(100vh - 52px);
  display: grid;
  place-items: center;
  background: var(--dark);
  color: var(--white);
  overflow: hidden;
}

.hero-inner {
  width: min(1180px, calc(100% - 32px));
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  align-items: center;
  gap: 56px;
  padding: 72px 0 56px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue-on-dark);
  font-size: 15px;
  font-weight: 600;
}

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

h1 {
  margin-bottom: 18px;
  font-family: "SF Pro Display", system-ui, -apple-system, sans-serif;
  font-size: clamp(44px, 7vw, 84px);
  line-height: 1.04;
  font-weight: 650;
  letter-spacing: 0;
}

.hero-copy {
  margin-bottom: 28px;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(18px, 2.2vw, 25px);
  line-height: 1.38;
}

.hero-media img,
.product-visual img {
  border-radius: 0;
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.35);
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
}

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

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

.button.secondary {
  color: var(--blue);
  background: var(--white);
}

.button.ghost {
  color: var(--blue);
  background: transparent;
}

.section {
  padding: 86px 0;
}

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

.section.dark {
  background: var(--tile);
  color: var(--white);
}

.container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.section-header {
  max-width: 780px;
  margin-bottom: 36px;
}

.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

h2 {
  margin-bottom: 14px;
  font-family: "SF Pro Display", system-ui, -apple-system, sans-serif;
  font-size: clamp(34px, 4.5vw, 58px);
  line-height: 1.08;
  font-weight: 650;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 24px;
  line-height: 1.18;
}

.lead {
  color: var(--muted);
  font-size: 20px;
  line-height: 1.5;
}

.dark .lead {
  color: rgba(255, 255, 255, 0.7);
}

.grid {
  display: grid;
  gap: 18px;
}

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

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

.tile {
  min-height: 260px;
  padding: 34px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
}

.tile.dark-tile {
  background: #08080a;
  color: var(--white);
  border: 0;
}

.tile p {
  color: var(--muted);
  line-height: 1.55;
}

.dark-tile p {
  color: rgba(255, 255, 255, 0.68);
}

.product-card {
  display: grid;
  grid-template-rows: auto 1fr;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
}

.product-card img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  object-position: center top;
}

.product-card-body {
  padding: 30px;
}

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

.spec-list li {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.spec-list strong {
  color: var(--ink);
}

.comparison {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  border-radius: 18px;
  overflow: hidden;
}

.comparison th,
.comparison td {
  padding: 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.comparison th {
  background: var(--soft);
  font-weight: 650;
}

.detail-hero {
  background: var(--dark);
  color: var(--white);
  padding: 76px 0 0;
}

.detail-hero .container {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  align-items: end;
  gap: 44px;
}

.detail-hero img {
  width: 100%;
  max-height: 720px;
  object-fit: cover;
  object-position: center top;
}

.feature-band {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  align-items: center;
  gap: 40px;
}

.feature-band img {
  width: 100%;
  border-radius: 18px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.stat {
  padding: 24px;
  background: var(--white);
  border-radius: 18px;
  border: 1px solid var(--line);
}

.stat strong {
  display: block;
  margin-bottom: 8px;
  font-size: 28px;
}

.footer {
  background: var(--soft);
  padding: 38px 0;
  color: var(--muted);
  font-size: 14px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

@media (max-width: 860px) {
  .site-nav {
    height: auto;
  }

  .nav-inner {
    min-height: 52px;
    flex-wrap: wrap;
    padding: 10px 0;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: 10px;
  }

  .hero-inner,
  .detail-hero .container,
  .feature-band {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    padding: 48px 0 38px;
    gap: 34px;
  }

  .grid.two,
  .grid.three,
  .stats {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 58px 0;
  }

  .tile {
    padding: 24px;
  }

  .product-card img {
    height: 280px;
  }

  .comparison {
    display: block;
    overflow-x: auto;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}