:root {
  --bg: #071018;
  --panel: #0d1a24;
  --panel-2: #102331;
  --text: #f3f8fb;
  --muted: #9db0bd;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #35d6a4;
  --accent-2: #63a8ff;
  --white: #fff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    Inter, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial,
    sans-serif;
  line-height: 1.6;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 6vw;
  background: rgba(7, 16, 24, 0.9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 700;
}

.brand-mark {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid rgba(53, 214, 164, 0.65);
  border-radius: 8px;
  background: #0e2a2a;
  color: var(--accent);
}

.nav {
  display: flex;
  gap: 28px;
  color: var(--muted);
  font-size: 15px;
}

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

.section {
  width: min(1180px, 88vw);
  margin: 0 auto;
  padding: 86px 0;
}

section[id] {
  scroll-margin-top: 92px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.72fr);
  gap: 48px;
  align-items: center;
  min-height: calc(100vh - 72px);
}

.eyebrow,
.tag {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(42px, 5.2vw, 66px);
  line-height: 1.12;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.18;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.28;
}

p {
  color: var(--muted);
}

.hero-text {
  max-width: 760px;
  margin-bottom: 34px;
  font-size: 19px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 8px;
  font-weight: 700;
}

.button.primary {
  background: var(--accent);
  color: #03110d;
}

.button.secondary {
  border: 1px solid var(--line);
  color: var(--white);
}

.hero-panel {
  position: relative;
  overflow: hidden;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(99, 168, 255, 0.14), transparent 38%),
    linear-gradient(180deg, var(--panel-2), var(--panel));
}

.hero-panel::after {
  content: "";
  position: absolute;
  inset: auto -20% -30% 20%;
  height: 220px;
  background: radial-gradient(circle, rgba(53, 214, 164, 0.28), transparent 68%);
  pointer-events: none;
}

.panel-chip {
  position: relative;
  z-index: 1;
  display: inline-flex;
  margin-bottom: 26px;
  padding: 8px 12px;
  border: 1px solid rgba(53, 214, 164, 0.32);
  border-radius: 999px;
  color: var(--accent);
  font-weight: 700;
}

.metric {
  position: relative;
  z-index: 1;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
}

.metric span {
  display: block;
  color: var(--white);
  font-size: 24px;
  font-weight: 800;
  line-height: 1.2;
  overflow-wrap: anywhere;
}

.metric small {
  color: var(--muted);
}

.metric.strong {
  margin-bottom: 14px;
  padding: 26px;
}

.metric.strong span {
  font-size: 54px;
}

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

.metric-grid .metric span {
  font-size: 20px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.value-grid,
.scenario-grid,
.ecosystem-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.value-grid article,
.scenario-grid article,
.ecosystem-grid > div {
  min-height: 220px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.035);
}

.index {
  display: inline-block;
  margin-bottom: 34px;
  color: var(--accent-2);
  font-weight: 800;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.product-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0d1922;
}

.product-card > div:last-child {
  padding: 22px;
}

.solution-card {
  grid-column: span 1;
}

.product-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 230px;
  padding: 28px;
  background:
    radial-gradient(circle at 50% 45%, rgba(53, 214, 164, 0.14), transparent 48%),
    linear-gradient(145deg, rgba(99, 168, 255, 0.1), transparent 45%),
    #09141d;
}

.product-visual img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 22px 22px rgba(0, 0, 0, 0.32));
}

.workstation-visual img {
  width: auto;
  max-width: 86%;
}

.server-visual img {
  max-width: 92%;
  max-height: 78%;
}

.ecosystem {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 48px;
  align-items: center;
}

.email-link {
  display: inline-flex;
  margin-top: 10px;
  color: var(--accent);
  font-size: 24px;
  font-weight: 800;
}

.qr-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  color: #071018;
  text-align: center;
}

.qr-card p {
  margin: 12px 0 0;
  color: #25313a;
  font-weight: 700;
}

.qr-image {
  width: 100%;
  border-radius: 6px;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  padding: 26px 6vw 34px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.site-footer a:hover {
  color: var(--white);
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
    padding: 16px 6vw;
  }

  .nav {
    width: 100%;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 2px;
    white-space: nowrap;
  }

  .hero,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 0;
    padding-top: 64px;
  }

  .value-grid,
  .product-grid,
  .scenario-grid,
  .ecosystem-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-section {
    align-items: start;
  }
}

@media (max-width: 680px) {
  .section {
    width: min(100% - 32px, 1180px);
    padding: 58px 0;
  }

  h1 {
    font-size: 44px;
  }

  .hero-text {
    font-size: 17px;
  }

  .metric-grid,
  .value-grid,
  .product-grid,
  .scenario-grid,
  .ecosystem-grid {
    grid-template-columns: 1fr;
  }

  .metric.strong span {
    font-size: 42px;
  }

  .product-visual {
    height: 210px;
  }

  .email-link {
    font-size: 20px;
  }
}