:root {
  --bg: #0b0b0b;
  --surface: #111111;
  --surface-2: #161616;
  --ink: #f5f5f5;
  --muted: #b9b9b9;
  --line: #2a2a2a;
  --line-strong: #3a3a3a;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
  line-height: 1.55;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% -10%, #1a1a1a 0, transparent 35%),
    radial-gradient(circle at 90% -20%, #171717 0, transparent 32%),
    var(--bg);
}

a {
  color: inherit;
}

.site-header {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.1rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.site-header nav {
  display: flex;
  gap: 1rem;
}

.site-header nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
}

.brand {
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.02em;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1rem 4rem;
}

.hero {
  padding: 4.5rem 0 2rem;
}

.eyebrow {
  color: #d6d6d6;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 650;
  margin: 0;
  font-size: 0.78rem;
}

h1 {
  font-size: clamp(2.05rem, 5vw, 3.65rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0.7rem 0 1rem;
  max-width: 18ch;
}

h2 {
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  letter-spacing: -0.01em;
  margin: 0 0 1rem;
}

.section {
  padding: 2.5rem 0;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface) 0%, #0f0f0f 100%);
  border-radius: 6px;
  padding: 1.2rem;
}

.card h3 {
  margin-top: 0;
}

.card-head {
  margin-bottom: 0.9rem;
}

.app-icon {
  width: 68px;
  height: 68px;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid var(--line-strong);
  background: #0f0f0f;
  display: block;
}

.app-icon-large {
  width: 98px;
  height: 98px;
}

.card ul {
  padding-left: 1.1rem;
  margin-bottom: 0;
}

.tagline {
  color: var(--muted);
}

.actions {
  margin-top: 1rem;
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  background: #f0f0f0;
  color: #080808;
  border: 1px solid transparent;
  text-decoration: none;
  border-radius: 4px;
  padding: 0.62rem 1rem;
  font-weight: 650;
  font-size: 0.95rem;
}

.btn.secondary {
  background: transparent;
  color: #f0f0f0;
  border-color: var(--line-strong);
}

.split {
  display: grid;
  grid-template-columns: 1.7fr 1fr;
  gap: 1rem;
}

.callout {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1rem;
}

.site-footer {
  text-align: center;
  padding: 2rem 1rem 4rem;
  border-top: 1px solid var(--line);
  color: #dddddd;
}

.app-hero {
  padding: 4rem 0 1.5rem;
}

.app-hero-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.2rem 0 2rem;
}

.meta {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1rem;
}

.back-link {
  margin-top: 1rem;
  display: inline-block;
  color: #d1d1d1;
}

@media (hover: hover) {
  .site-header nav a:hover,
  .back-link:hover {
    color: #ffffff;
  }

  .btn:hover {
    background: #ffffff;
  }

  .btn.secondary:hover {
    background: #1c1c1c;
    border-color: #4a4a4a;
  }
}

@media (max-width: 900px) {
  .cards,
  .split,
  .app-hero-grid,
  .meta-grid {
    grid-template-columns: 1fr;
  }

  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.65rem;
  }
}