:root {
  color-scheme: light;
  --bg: #eef4f8;
  --surface: rgba(255, 255, 255, 0.88);
  --surface-strong: #ffffff;
  --line: rgba(28, 53, 88, 0.14);
  --ink: #14253d;
  --muted: #5b6d80;
  --navy: #1e3760;
  --blue: #2563eb;
  --sky: #cfe7f7;
  --gold: #e0a11a;
  --red: #c31414;
  --shadow: 0 18px 40px rgba(21, 41, 66, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(238, 244, 248, 0.98)),
    linear-gradient(135deg, rgba(207, 231, 247, 0.52), rgba(255, 255, 255, 0) 42%),
    var(--bg);
  font-family:
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC",
    sans-serif;
  line-height: 1.6;
}

img {
  display: block;
  width: 100%;
  height: auto;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(20, 37, 61, 0.08);
  background: rgba(247, 250, 252, 0.82);
  backdrop-filter: blur(16px);
}

.topbar {
  width: min(1240px, calc(100% - 32px));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 700;
  white-space: nowrap;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 74px;
  height: 36px;
  padding: 0 12px;
  border-radius: 8px;
  background: var(--navy);
  color: #fff;
  font-size: 14px;
  letter-spacing: 0;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand-copy strong {
  font-size: 15px;
}

.brand-copy small {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-left: auto;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a {
  text-decoration: none;
  font-weight: 650;
}

.nav-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 8px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 750;
  white-space: nowrap;
}

.nav-cta {
  background: var(--navy);
  color: #fff;
}

.button.primary {
  background: var(--navy);
  color: #fff;
}

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

.section-shell {
  width: min(1240px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  min-height: calc(100vh - 72px);
  padding: 34px 0 48px;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 0.8fr);
  gap: 40px;
  align-items: center;
}

.hero-copy {
  max-width: 700px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 16px;
  font-size: clamp(40px, 5.8vw, 72px);
  line-height: 1.06;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 12px;
  font-size: clamp(28px, 3.8vw, 44px);
  line-height: 1.16;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.3;
}

.hero-text,
.section-lead,
.info-card p,
.mini-card p,
.tech-card p,
.scene-card p,
.business-card p,
.team-card p {
  color: var(--muted);
}

.hero-text {
  max-width: 640px;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 16px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-points span {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  border: 1px solid rgba(30, 55, 96, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.76);
  color: var(--navy);
  font-size: 14px;
  font-weight: 700;
}

.hero-visual {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--surface-strong);
  box-shadow: var(--shadow);
}

.metrics {
  padding: 2px 0 16px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.metrics article,
.info-card,
.mini-card,
.tech-card,
.scene-card,
.business-card,
.team-card,
.wide-figure,
.quote-strip,
.vision-banner {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.metrics article {
  padding: 22px;
  min-height: 112px;
}

.metrics strong {
  display: block;
  color: var(--navy);
  font-size: 30px;
  line-height: 1.1;
}

.metrics span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.band,
.product-block,
.compare-band,
.tech-block,
.scene-block,
.business-block,
.team-block {
  padding: 68px 0;
}

.band-head,
.section-head {
  display: grid;
  gap: 10px;
  margin-bottom: 22px;
}

.section-head {
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.9fr);
  align-items: end;
}

.section-lead {
  margin: 0;
  font-size: 17px;
}

.why-grid,
.product-layout,
.tech-grid,
.scene-grid,
.business-grid,
.team-grid {
  display: grid;
  gap: 16px;
}

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

.info-card {
  padding: 22px;
  min-height: 180px;
}

.card-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 10px;
  border-radius: 6px;
  background: rgba(30, 55, 96, 0.08);
  color: var(--navy);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.quote-strip {
  margin-top: 16px;
  padding: 18px 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  color: var(--navy);
  font-weight: 750;
}

.quote-strip span {
  padding: 6px 0;
}

.product-layout {
  grid-template-columns: minmax(0, 1.08fr) minmax(300px, 0.92fr);
  align-items: stretch;
}

.feature-visual,
.wide-figure {
  margin: 0;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fff;
}

.feature-visual img,
.wide-figure img {
  height: 100%;
  object-fit: cover;
}

.feature-stack {
  display: grid;
  gap: 14px;
}

.mini-card {
  padding: 22px;
}

.compare-band .wide-figure {
  margin-top: 8px;
}

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

.tech-card,
.scene-card,
.business-card,
.team-card {
  overflow: hidden;
  background: var(--surface-strong);
}

.tech-card img,
.scene-card img,
.business-card img,
.team-card img {
  height: 260px;
  object-fit: cover;
}

.tech-card div,
.scene-card div,
.business-card div,
.team-card div {
  padding: 20px 22px 22px;
}

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

.scene-card img,
.business-card img,
.team-card img {
  height: 245px;
}

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

.vision-banner {
  margin-top: 16px;
}

.vision-banner img {
  height: auto;
  object-fit: cover;
}

.site-footer {
  width: min(1240px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  color: var(--muted);
  border-top: 1px solid rgba(20, 37, 61, 0.08);
}

.site-footer strong {
  display: block;
  color: var(--ink);
}

.site-footer span {
  display: block;
  margin-top: 4px;
}

.js .section-shell,
.js .hero,
.js .metrics,
.js .why-grid,
.js .product-layout,
.js .tech-grid,
.js .scene-grid,
.js .business-grid,
.js .team-grid,
.js .site-footer {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 540ms ease,
    transform 540ms ease;
}

.js .is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1060px) {
  .topbar {
    flex-wrap: wrap;
    padding: 12px 0;
  }

  .nav-links {
    width: 100%;
    margin-left: 0;
    order: 3;
  }

  .hero,
  .section-head,
  .product-layout,
  .business-grid,
  .team-grid {
    grid-template-columns: 1fr;
  }

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

  .hero {
    min-height: auto;
    padding-top: 18px;
  }
}

@media (max-width: 720px) {
  .topbar {
    gap: 12px;
  }

  .brand {
    width: 100%;
  }

  .nav-cta {
    width: 100%;
  }

  .metrics,
  .why-grid,
  .tech-grid,
  .scene-grid,
  .business-grid,
  .team-grid {
    grid-template-columns: 1fr;
  }

  .metrics article {
    min-height: auto;
  }

  h1 {
    font-size: 38px;
  }

  .hero-text,
  .section-lead {
    font-size: 16px;
  }

  .band,
  .product-block,
  .compare-band,
  .tech-block,
  .scene-block,
  .business-block,
  .team-block {
    padding: 52px 0;
  }

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