:root {
  --bg: #ffffff;
  --bg-muted: #f5f5f7;
  --bg-dark: #000000;
  --surface: #ffffff;
  --line: #d2d2d7;
  --text: #1d1d1f;
  --text-muted: #6e6e73;
  --text-light: #f5f5f7;
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --shadow-soft: 0 20px 44px rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "SF Pro Display", "PingFang SC", "Helvetica Neue", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  line-height: 1.55;
}

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

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(180%) blur(20px);
  background: rgba(255, 255, 255, 0.8);
  border-bottom: 1px solid rgba(210, 210, 215, 0.7);
}

.nav-wrap {
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
}

.brand img {
  width: 24px;
  height: 24px;
  border-radius: 6px;
}

.nav-links {
  display: inline-flex;
  gap: 22px;
  font-size: 13px;
  color: #424245;
}

.nav-links a:hover {
  color: #000;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.hero {
  padding: 88px 0 96px;
  background:
    radial-gradient(circle at 50% 18%, rgba(0, 113, 227, 0.18), transparent 48%),
    var(--bg-dark);
  color: var(--text-light);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: #a1a1a6;
}

h1 {
  font-size: clamp(38px, 5.5vw, 74px);
  font-weight: 700;
}

.hero-lead {
  margin: 18px 0 0;
  max-width: 640px;
  font-size: clamp(19px, 2.2vw, 28px);
  color: #c8c8cd;
}

.hero-actions {
  margin-top: 28px;
}

.hero-card {
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: #101012;
  padding: 10px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
}

.hero-card img {
  width: 100%;
  display: block;
  border-radius: 22px;
}

.section {
  padding: 100px 0;
}

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

.section-title {
  text-align: center;
  margin-bottom: 34px;
}

h2 {
  font-size: clamp(36px, 4.2vw, 66px);
  font-weight: 700;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.product-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.product-image {
  background: #f1f1f4;
  border-bottom: 1px solid var(--line);
}

.product-image img {
  width: 100%;
  display: block;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.product-body {
  padding: 24px 24px 26px;
}

.product-type {
  margin: 0 0 8px;
  color: #6e6e73;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

.product-body h3 {
  font-size: clamp(28px, 2.1vw, 34px);
  font-weight: 650;
}

.product-body > p {
  margin: 12px 0 0;
  color: var(--text-muted);
  font-size: 17px;
}

.product-actions {
  margin-top: 18px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.company-plain {
  padding: 8px 0 0;
}

.company-head {
  text-align: center;
}

.company-head p {
  margin: 12px auto 0;
  color: var(--text-muted);
  max-width: 760px;
  font-size: 18px;
}

.company-meta {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

.company-meta-item {
  padding: 0 6px;
}

.company-meta-item h3 {
  font-size: 18px;
  font-weight: 550;
  letter-spacing: -0.01em;
}

.company-meta-item p {
  margin: 10px 0 0;
  color: var(--text-muted);
  font-size: 16px;
}

.company-meta-item a {
  color: var(--accent);
}

.company-meta-item a:hover {
  color: var(--accent-hover);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 999px;
  padding: 0 22px;
  font-size: 16px;
  font-weight: 500;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-link {
  color: var(--accent);
}

.btn-link:hover {
  color: var(--accent-hover);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg-muted);
  padding: 18px 0 20px;
}

.footer-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--text-muted);
  font-size: 12px;
}

.footer-wrap p {
  margin: 0;
}

.footer-links {
  display: inline-flex;
  gap: 16px;
}

.footer-links a:hover,
.footer-wrap a:hover {
  color: var(--text);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (max-width: 1024px) {
  .hero-grid,
  .product-grid,
  .company-meta {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    text-align: center;
  }

  .hero-lead {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    display: flex;
    justify-content: center;
  }
}

@media (max-width: 740px) {
  .nav-links {
    display: none;
  }

  .hero {
    padding-top: 62px;
  }

  .section {
    padding: 78px 0;
  }

  .company-plain {
    padding-top: 2px;
  }

  .company-meta {
    gap: 18px;
    padding-top: 18px;
  }

  .footer-wrap {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}