:root {
  --accent: #dbff4a;
  --accent-dim: rgba(219, 255, 74, 0.12);
  --bg: #0a0a0b;
  --surface: #141416;
  --border: rgba(255, 255, 255, 0.08);
  --fg: #f4f4f5;
  --muted: #a1a1aa;
  --faint: #71717a;
  --max: 72rem;
  --font: "Inter", system-ui, -apple-system, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  letter-spacing: -0.01em;
}

.ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.ambient::before {
  content: "";
  position: absolute;
  top: -20%;
  left: 50%;
  width: min(900px, 120vw);
  height: 60vh;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at center, var(--accent-dim) 0%, transparent 70%);
}

.shell {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--max);
  margin: 0 auto;
  width: 100%;
  padding: 1.25rem 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--fg);
}

.brand-mark {
  display: block;
  width: 2rem;
  height: 2rem;
  flex-shrink: 0;
}

.brand-name {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.header-note {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem 3rem;
}

.hero {
  width: 100%;
  max-width: 40rem;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 1.25rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.25rem, 6vw, 3.25rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.lede {
  margin: 0 auto;
  max-width: 32rem;
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--muted);
}

.inline-code {
  font-family: ui-monospace, monospace;
  font-size: 0.9em;
  color: var(--fg);
}

.features {
  display: grid;
  gap: 0.75rem;
  width: 100%;
  max-width: var(--max);
  margin: 3rem auto 0;
  padding: 0 1.5rem 2rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.feature {
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, transparent 100%);
}

.feature h2 {
  margin: 0 0 0.4rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg);
}

.feature p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--muted);
}

.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  width: 100%;
  padding: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.75rem;
  color: var(--faint);
}

.site-footer a {
  color: var(--muted);
  text-decoration: none;
}

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