:root {
  color-scheme: light dark;
  --bg: #f8fafc;
  --surface: #ffffff;
  --ink: #172033;
  --muted: #657084;
  --line: #dbe3ee;
  --brand: #0b1720;
  --accent: #fbbf24;
  --link: #0f766e;
  --link-hover: #115e59;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1118;
    --surface: #111b26;
    --ink: #f8fafc;
    --muted: #a7b4c6;
    --line: #253241;
    --brand: #0b1720;
    --link: #5eead4;
    --link-hover: #99f6e4;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.6;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  color: var(--link-hover);
  text-decoration: underline;
}

.shell {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 88%, transparent);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-weight: 700;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--brand);
  color: #f8fafc;
  font-weight: 800;
  letter-spacing: 0;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
}

.nav-links {
  display: flex;
  gap: 18px;
  font-size: 0.95rem;
}

.hero,
.section {
  padding: 56px 0;
}

.hero {
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 180px;
  gap: 40px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(2.25rem, 5vw, 4rem);
  line-height: 1.06;
}

h2 {
  margin-bottom: 18px;
  font-size: 1.75rem;
  line-height: 1.2;
}

h3 {
  margin-bottom: 8px;
  font-size: 1rem;
}

.lead {
  max-width: 680px;
  color: var(--muted);
  font-size: 1.15rem;
}

.app-icon {
  width: 180px;
  height: 180px;
  border-radius: 36px;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.24);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--ink);
  color: var(--bg);
  font-weight: 700;
}

.button:hover {
  color: var(--bg);
  text-decoration: none;
}

.button.secondary {
  background: transparent;
  color: var(--ink);
}

.button.secondary:hover {
  color: var(--ink);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 22px;
}

.card p,
.faq p {
  color: var(--muted);
}

.list {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

.faq {
  display: grid;
  gap: 14px;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 28px 0;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 720px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }

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

  .app-icon {
    width: 132px;
    height: 132px;
  }

  .hero,
  .section {
    padding: 40px 0;
  }
}