:root {
  --bg: #0b0b0d;
  --panel: #141418;
  --line: #232327;
  --text: #ffffff;
  --muted: #a1a1aa;
  --accent: #22c55e;
  --accent-2: #16a34a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(34, 197, 94, 0.2), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(22, 163, 74, 0.15), transparent 60%),
    var(--bg);
  font-family: "Space Grotesk", sans-serif;
}

.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  opacity: 0.02;
  background-image: repeating-radial-gradient(circle at 0 0, #fff, #fff 1px, transparent 1px, transparent 3px);
}

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  background: rgba(11, 11, 13, 0.7);
}

.brand {
  font-family: "Sora", sans-serif;
  font-weight: 800;
  font-size: 22px;
}

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

.nav nav {
  display: flex;
  gap: 16px;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}

main { padding: 24px 20px 40px; max-width: 1040px; margin: 0 auto; }

.hero {
  padding: 40px 0 20px;
}

.eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.12em;
  font-weight: 700;
}

h1, h2, h3 { font-family: "Sora", sans-serif; margin: 0; }

h1 {
  font-size: clamp(42px, 8vw, 80px);
  line-height: 0.95;
  margin-top: 8px;
}

.sub {
  margin-top: 18px;
  color: var(--muted);
  max-width: 700px;
  font-size: 18px;
}

.cta-row {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 20px;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 700;
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  color: #09130d;
}

.btn-ghost {
  background: var(--panel);
  border-color: var(--line);
  color: var(--text);
}

.hero-cards {
  margin-top: 26px;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.hero-cards article,
.panel,
.stack-card {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 18px;
  padding: 16px;
}

.hero-cards p,
.panel p { color: var(--muted); margin: 8px 0 0; }

.section { margin-top: 40px; }

.section h2 { font-size: clamp(28px, 4vw, 40px); }

.grid {
  margin-top: 14px;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.split {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 16px;
  align-items: center;
}

ol { color: var(--muted); margin: 14px 0 0; padding-left: 18px; display: grid; gap: 8px; }

.card-stack { position: relative; height: 220px; }
.stack-card { position: absolute; width: 100%; }
.stack-1 { top: 0; transform: rotate(-4deg); }
.stack-2 { top: 64px; transform: rotate(1deg); }
.stack-3 { top: 128px; transform: rotate(4deg); border-color: rgba(34, 197, 94, 0.7); }

.download {
  margin-top: 46px;
  text-align: center;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(20, 20, 24, 0.95), rgba(20, 20, 24, 0.75));
}

.download p { color: var(--muted); }
.center { justify-content: center; }

footer {
  border-top: 1px solid var(--line);
  margin-top: 48px;
  padding: 20px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 760px) {
  .nav nav { display: none; }
  .split { grid-template-columns: 1fr; }
  .card-stack { margin-top: 8px; }
}