:root {
  --bg: #fbfbfd;
  --surface: #ffffff;
  --text: #16181d;
  --muted: #5b6270;
  --line: #e3e6ec;
  --accent: #3d5afe;
  --accent-text: #ffffff;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --surface: #171a21;
    --text: #e9ecf2;
    --muted: #9aa3b2;
    --line: #262b36;
    --accent: #7c8dff;
    --accent-text: #0f1115;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

a {
  color: var(--accent);
}

.wrap {
  max-width: 46rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

header.site {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 0;
}

header.site .name {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  color: var(--text);
  text-decoration: none;
}

header.site nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
  font-size: 0.95rem;
}

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

header.site nav a:hover {
  color: var(--text);
}

.hero {
  padding: 3.5rem 0 2.5rem;
}

.hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2.2rem, 7vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.hero p {
  margin: 0;
  max-width: 34rem;
  font-size: 1.2rem;
  color: var(--muted);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.button {
  display: inline-block;
  padding: 0.7rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-text);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1rem;
  padding: 1.5rem 0 3rem;
}

.card {
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  background: var(--surface);
}

.card h2 {
  margin: 0 0 0.3rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.97rem;
}

main.text {
  padding: 1rem 0 3rem;
}

main.text h1 {
  font-size: 2rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

main.text h2 {
  margin-top: 2.2rem;
  font-size: 1.25rem;
}

main.text li {
  margin: 0.35rem 0;
}

.note {
  color: var(--muted);
  font-size: 0.95rem;
}

footer.site {
  padding: 1.5rem 0 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

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