:root {
  color-scheme: dark;
  --bg: #06080c;
  --panel: #0f141f;
  --panel-strong: #151d2d;
  --text: #f6f8fb;
  --muted: #a5b1c2;
  --line: rgba(255,255,255,0.13);
  --accent: #f97316;
  --accent-2: #38bdf8;
  --gold: #facc15;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 20% 0%, rgba(249, 115, 22, 0.2), transparent 32rem),
    radial-gradient(circle at 90% 20%, rgba(56, 189, 248, 0.14), transparent 30rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a { color: inherit; }
code { color: var(--gold); }

.skip-link {
  position: absolute;
  left: -999px;
  top: 1rem;
  background: var(--accent);
  color: #140801;
  padding: 0.7rem 1rem;
  z-index: 20;
}

.skip-link:focus { left: 1rem; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.1rem clamp(1rem, 4vw, 4rem);
  border-bottom: 1px solid var(--line);
  background: rgba(6, 8, 12, 0.84);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  font-weight: 900;
  text-decoration: none;
  font-size: 1.25rem;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  justify-content: flex-end;
  color: var(--muted);
  font-size: 0.95rem;
}

nav a,
footer a,
.button {
  text-decoration: none;
}

nav a:hover,
footer a:hover {
  color: var(--accent);
}

.hero,
.band,
.split,
footer {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.hero {
  padding: clamp(5rem, 12vw, 9rem) 0 clamp(3rem, 7vw, 6rem);
}

.hero.compact {
  padding-bottom: 2rem;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1, h2, h3, p { letter-spacing: 0; }

h1 {
  max-width: 960px;
  margin: 0;
  font-size: clamp(2.6rem, 7vw, 6rem);
  line-height: 0.95;
}

h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.05;
}

h3 {
  margin: 0 0 0.65rem;
  font-size: 1.2rem;
}

.lede {
  max-width: 790px;
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: clamp(1.1rem, 2.2vw, 1.45rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.85rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  font-weight: 900;
}

.button.primary {
  background: var(--accent);
  color: #140801;
}

.button.secondary {
  background: rgba(255,255,255,0.06);
}

.band {
  padding: clamp(2rem, 6vw, 4rem) 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.5fr) minmax(0, 1fr);
  gap: 2rem;
  margin-bottom: 1.5rem;
}

.grid {
  display: grid;
  gap: 1rem;
}

.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card,
.terminal {
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, var(--panel-strong), var(--panel));
}

.card p,
.card li,
.prose p,
footer {
  color: var(--muted);
}

.card ul,
.card ol {
  padding-left: 1.25rem;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(1.5rem, 5vw, 4rem);
  padding: clamp(2rem, 6vw, 4rem) 0;
  border-top: 1px solid var(--line);
}

.terminal {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: #d9f99d;
}

.terminal span {
  color: var(--accent);
}

footer {
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--line);
}

@media (max-width: 860px) {
  .site-header,
  .section-heading,
  .split {
    display: block;
  }

  nav {
    justify-content: flex-start;
    margin-top: 0.8rem;
  }

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