:root {
  color-scheme: light dark;
  --accent: #0a806b;
  --ink: #171717;
  --muted: #6f7280;
  --surface: #f4f5f7;
  --card: #ffffff;
  --border: rgba(0, 0, 0, 0.09);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  color: var(--ink);
  background: var(--surface);
}

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

.site-header,
.site-main,
.site-footer {
  width: min(940px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 28px 0 18px;
}

.brand {
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

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

.hero,
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.hero {
  padding: 42px;
  margin: 18px 0;
}

h1,
h2,
h3 {
  line-height: 1.15;
  margin: 0 0 14px;
}

h1 {
  font-size: clamp(2.2rem, 6vw, 4.2rem);
  letter-spacing: 0;
}

h2 {
  font-size: 1.45rem;
  margin-top: 28px;
}

p {
  margin: 0 0 14px;
}

.lead {
  max-width: 720px;
  font-size: 1.15rem;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0;
}

.card {
  padding: 20px;
}

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

.button-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--ink);
  background: var(--card);
  font-weight: 650;
  text-decoration: none;
}

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

.legal {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 30px;
  margin: 18px 0;
}

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

.site-footer {
  color: var(--muted);
  font-size: 0.9rem;
  padding: 26px 0 40px;
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero,
  .legal {
    padding: 26px;
  }

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

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f5f5f7;
    --muted: #a7a7b1;
    --surface: #000000;
    --card: #1c1c1e;
    --border: rgba(255, 255, 255, 0.12);
  }
}