:root {
  --bg0: #0a1210;
  --bg1: #12201c;
  --ink: #e7f2ec;
  --muted: #8aa399;
  --accent: #c4f54a;
  --accent-dim: #7a9a2e;
  --line: rgba(231, 242, 236, 0.12);
  --font-display: "Bebas Neue", sans-serif;
  --font-body: "IBM Plex Sans", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 700px at 80% -10%, rgba(196, 245, 74, 0.14), transparent 55%),
    radial-gradient(900px 500px at -10% 40%, rgba(40, 120, 100, 0.35), transparent 50%),
    linear-gradient(165deg, var(--bg0), var(--bg1) 45%, #0d1814);
  line-height: 1.5;
}

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  opacity: 0.07;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 0;
}

.top, main, footer { position: relative; z-index: 1; }

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 4vw;
}
.wordmark {
  font-family: var(--font-display);
  letter-spacing: 0.08em;
  font-size: 1.5rem;
  color: var(--ink);
  text-decoration: none;
}
nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}
nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
}
nav a:hover { color: var(--ink); }
nav .gh { color: var(--accent); }

.hero {
  min-height: calc(100vh - 5rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 2rem 4vw 4rem;
  position: relative;
  overflow: hidden;
}
.brand-lock {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
}
.logo-hero {
  margin: 0.35rem 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(5.5rem, 18vw, 11rem);
  line-height: 0.9;
  letter-spacing: 0.04em;
  font-weight: 400;
}
.lede {
  max-width: 34rem;
  margin: 0;
  font-size: 1.15rem;
  color: var(--muted);
}
.cta-row {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.75rem;
  flex-wrap: wrap;
}
.cta {
  display: inline-flex;
  align-items: center;
  padding: 0.85rem 1.35rem;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}
.cta.primary {
  background: var(--accent);
  color: #10180c;
}
.cta.primary:hover { transform: translateY(-2px); }
.cta.ghost {
  border-color: var(--line);
  color: var(--ink);
}
.cta.ghost:hover { border-color: var(--accent-dim); }

.hero-plane {
  position: absolute;
  right: -8vw;
  bottom: 8vh;
  width: min(52vw, 640px);
  height: min(52vw, 640px);
  border-radius: 50%;
  background:
    conic-gradient(from 210deg, transparent, rgba(196, 245, 74, 0.2), transparent 40%),
    radial-gradient(circle at 40% 40%, rgba(196, 245, 74, 0.25), transparent 55%);
  filter: blur(2px);
  animation: drift 14s ease-in-out infinite alternate;
  pointer-events: none;
}
@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(-3%, 4%, 0) scale(1.05); }
}

.band {
  padding: 4.5rem 4vw;
  border-top: 1px solid var(--line);
}
.band h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: 0.04em;
  margin: 0 0 0.75rem;
  font-weight: 400;
}
.support {
  max-width: 40rem;
  color: var(--muted);
  margin: 0 0 1.5rem;
}
.support a { color: var(--accent); }
.support code, .code code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
  max-width: 40rem;
}
.steps li {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 0.75rem;
  align-items: baseline;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
}
.steps span {
  font-family: var(--font-display);
  color: var(--accent);
  letter-spacing: 0.06em;
}

.split {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
  align-items: start;
}
@media (max-width: 800px) {
  .split { grid-template-columns: 1fr; }
  .hero-plane { opacity: 0.45; }
}

.panel {
  border: 1px solid var(--line);
  padding: 1.25rem 1.5rem;
  background: rgba(10, 18, 16, 0.55);
  backdrop-filter: blur(8px);
}
.panel ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}
.panel li { margin: 0.55rem 0; }

.code {
  margin: 0;
  padding: 1.25rem 1.4rem;
  background: #060a09;
  border: 1px solid var(--line);
  overflow-x: auto;
  color: var(--accent);
  font-size: 0.92rem;
  line-height: 1.7;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 2rem 4vw 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}
footer a { color: var(--muted); }

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.in {
  opacity: 1;
  transform: none;
}