:root {
  color-scheme: dark;
  --bg: #070b14;
  --panel: #0d1424;
  --panel-soft: #111a2e;
  --text: #f4f7fb;
  --muted: #a9b4c7;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #7dd3fc;
  --accent-strong: #38bdf8;
  --warning: #facc15;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.2), transparent 34rem),
    radial-gradient(circle at top right, rgba(125, 211, 252, 0.1), transparent 28rem),
    var(--bg);
}

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

.nav {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: #06111f;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.35);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

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

main {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  min-height: 74vh;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
  padding: 72px 0 88px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 740px;
  margin-bottom: 20px;
  font-size: clamp(3.1rem, 8vw, 6.6rem);
  line-height: 0.9;
  letter-spacing: -0.08em;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1;
  letter-spacing: -0.05em;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.15rem;
}

.hero-subtitle {
  margin-bottom: 18px;
  color: var(--text);
  font-size: clamp(1.2rem, 2vw, 1.65rem);
  font-weight: 700;
}

.hero-text,
.section p,
.card p,
.warning p {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.hero-text {
  max-width: 660px;
}

.cta-row {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  min-height: 48px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  color: #06111f;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  border-color: transparent;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.08);
}

.button.ghost {
  color: var(--muted);
}

.terminal-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgba(13, 20, 36, 0.78);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.terminal-top {
  padding: 18px;
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.terminal-top span {
  width: 11px;
  height: 11px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.35);
}

pre {
  margin: 0;
  padding: 28px;
  overflow-x: auto;
  color: #d8f3ff;
  font-size: 0.98rem;
  line-height: 1.7;
}

.section {
  padding: 86px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 32px;
}

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

.card,
.warning,
.roadmap,
.doc-grid a {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(13, 20, 36, 0.74);
}

.card {
  padding: 24px;
}

.split {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 44px;
  align-items: start;
}

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

.check-list li,
.roadmap li {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
}

.check-list li::before,
.roadmap li::before {
  content: ">";
  margin-right: 10px;
  color: var(--accent);
  font-weight: 900;
}

.warning {
  padding: 34px;
  border-color: rgba(250, 204, 21, 0.38);
  background: rgba(250, 204, 21, 0.07);
}

.warning .eyebrow {
  color: var(--warning);
}

.doc-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.doc-grid a {
  padding: 20px;
  color: var(--text);
  font-weight: 800;
  transition: transform 160ms ease, border-color 160ms ease;
}

.doc-grid a:hover {
  transform: translateY(-2px);
  border-color: rgba(125, 211, 252, 0.5);
}

.roadmap {
  padding: 34px;
}

.footer {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 34px 0 52px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 24px;
  color: var(--muted);
}

.footer div {
  display: flex;
  gap: 18px;
}

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

@media (max-width: 920px) {
  .hero,
  .split {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 48px;
  }

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

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

@media (max-width: 620px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    flex-wrap: wrap;
  }

  h1 {
    font-size: 3.2rem;
  }

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

  .footer {
    flex-direction: column;
  }
}

body.light {
  --bg: #f7f8fb;
  --panel: #ffffff;
  --panel-soft: #eef3f8;
  --text: #07111f;
  --muted: #4b5b70;
  --line: rgba(7, 17, 31, 0.14);
  --accent: #0284c7;
  --accent-strong: #0369a1;
  --warning: #a16207;
  --shadow: 0 24px 80px rgba(7, 17, 31, 0.12);
  background:
    radial-gradient(circle at top left, rgba(2, 132, 199, 0.16), transparent 34rem),
    radial-gradient(circle at top right, rgba(3, 105, 161, 0.1), transparent 28rem),
    var(--bg);
}

.theme-toggle {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 9px 13px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
}

body.light .theme-toggle {
  background: rgba(7, 17, 31, 0.04);
}

body.light .terminal-card,
body.light .card,
body.light .warning,
body.light .roadmap,
body.light .doc-grid a {
  background: rgba(255, 255, 255, 0.78);
}

body.light .terminal-top {
  background: rgba(7, 17, 31, 0.04);
}

body.light pre {
  color: #0f3347;
}