:root {
  color-scheme: dark;
  --bg: #071019;
  --bg-2: #0b1624;
  --panel: rgba(15, 29, 46, 0.78);
  --panel-strong: #0f1d2e;
  --text: #eef6ff;
  --muted: #90a5ba;
  --line: rgba(142, 166, 190, 0.18);
  --brand: #7dd3fc;
  --brand-2: #a78bfa;
  --ok: #34d399;
  --warn: #fbbf24;
  --bad: #fb7185;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.32);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 0%, rgba(125, 211, 252, 0.22), transparent 32rem),
    radial-gradient(circle at 90% 8%, rgba(167, 139, 250, 0.16), transparent 34rem),
    linear-gradient(180deg, #071019 0%, #09111c 48%, #060b12 100%);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black, transparent 80%);
}

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

.shell {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 16, 25, 0.76);
  backdrop-filter: blur(18px);
}

.nav {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand,
.nav-links,
.trust-row,
.panel-top,
.card-title,
.deploy-actions,
.footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  color: #04111d;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  box-shadow: 0 10px 30px rgba(125, 211, 252, 0.24);
}

.nav-links {
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a:hover,
.nav-cta:hover {
  color: var(--text);
}

.nav-cta,
.button {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 700;
}

.nav-cta {
  color: var(--brand);
  background: rgba(125, 211, 252, 0.08);
}

.hero {
  min-height: 720px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 48px;
  padding: 84px 0 64px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 720px;
  margin-bottom: 22px;
  font-size: clamp(46px, 7vw, 82px);
  line-height: 0.96;
  letter-spacing: -0.07em;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.05;
  letter-spacing: -0.05em;
}

h3 {
  margin-bottom: 10px;
  font-size: 18px;
  letter-spacing: -0.03em;
}

.hero-text,
.section-heading p,
.split-section p,
.security-band p,
.deploy-card p,
.feature-card p {
  color: var(--muted);
  line-height: 1.78;
}

.hero-text {
  max-width: 620px;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 34px 0 26px;
}

.button.primary {
  color: #04111d;
  background: linear-gradient(135deg, var(--brand), #c4b5fd);
  border-color: transparent;
  box-shadow: 0 18px 44px rgba(125, 211, 252, 0.22);
}

.button.ghost {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.trust-row {
  flex-wrap: wrap;
  gap: 10px;
}

.trust-row span,
.security-grid span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
  font-size: 13px;
}

.hero-panel,
.feature-card,
.dash-card,
.code-card,
.security-band,
.deploy-card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(15, 29, 46, 0.92), rgba(9, 18, 30, 0.82));
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-panel {
  border-radius: 32px;
  padding: 24px;
  transform: perspective(900px) rotateY(-4deg) rotateX(2deg);
}

.panel-top {
  gap: 10px;
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 18px;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--ok);
  box-shadow: 0 0 0 8px rgba(52, 211, 153, 0.1), 0 0 30px rgba(52, 211, 153, 0.8);
}

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

.metric-card,
.route-card {
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.045);
}

.metric-card small,
.route-card small,
.card-title span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.metric-card strong {
  display: block;
  margin: 8px 0 2px;
  font-size: 30px;
  letter-spacing: -0.06em;
}

.metric-card span,
.route-card code {
  color: var(--muted);
  font-size: 13px;
}

.metric-card .up {
  color: var(--ok);
}

.route-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 14px;
}

.route-card strong {
  display: block;
  margin-top: 6px;
}

.section {
  padding: 86px 0;
}

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

.section-heading.compact {
  max-width: 660px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.feature-card {
  border-radius: 26px;
  padding: 24px;
}

.icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 28px;
  border-radius: 14px;
  color: #04111d;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  font-weight: 800;
}

.dashboard {
  display: grid;
  grid-template-columns: 1.3fr 0.85fr 0.85fr;
  gap: 18px;
}

.dash-card {
  border-radius: 28px;
  padding: 22px;
}

.card-title {
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.card-title h3 {
  margin: 0;
}

.key-list {
  display: grid;
  gap: 12px;
}

.key-row {
  display: grid;
  grid-template-columns: 70px 1fr 52px 88px;
  align-items: center;
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.035);
}

.key-row meter {
  width: 100%;
  height: 10px;
}

.key-row strong {
  font-size: 14px;
}

.key-row em {
  font-style: normal;
  font-size: 12px;
  color: var(--muted);
}

.key-row.healthy em {
  color: var(--ok);
}

.key-row.warn em {
  color: var(--warn);
}

.key-row.cooling em {
  color: var(--bad);
}

.plain-list,
.check-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
}

.plain-list li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
}

.plain-list strong {
  color: var(--ok);
}

.check-list li {
  position: relative;
  padding-left: 24px;
  color: var(--muted);
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--brand);
  box-shadow: 0 0 16px rgba(125, 211, 252, 0.8);
}

.split-section {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 28px;
  align-items: center;
}

.code-card {
  overflow-x: auto;
  border-radius: 28px;
  padding: 24px;
  color: #d9f99d;
  line-height: 1.65;
}

.code-card code,
.deploy-actions code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.security-band,
.deploy-card {
  border-radius: 34px;
  padding: 34px;
}

.security-band {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}

.security-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: flex-end;
}

.deploy-card {
  text-align: center;
}

.deploy-card p {
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.deploy-actions {
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 24px;
}

.deploy-actions code {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 14px;
  color: var(--brand);
  background: rgba(255, 255, 255, 0.05);
}

.footer {
  justify-content: space-between;
  gap: 16px;
  padding: 34px 0 46px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }

  .hero,
  .split-section,
  .security-band {
    grid-template-columns: 1fr;
  }

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

  .hero-panel {
    transform: none;
  }

  .feature-grid,
  .dashboard {
    grid-template-columns: 1fr 1fr;
  }

  .dash-card.wide {
    grid-column: 1 / -1;
  }

  .security-grid {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .shell {
    width: min(100% - 28px, 1160px);
  }

  .nav-cta {
    display: none;
  }

  .metric-grid,
  .feature-grid,
  .dashboard {
    grid-template-columns: 1fr;
  }

  .route-card,
  .footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .key-row {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 44px;
  }
}