:root {
  --bg: #f6f6f8;
  --surface: #ffffff;
  --text: #17171c;
  --muted: #5d5f6b;
  --border: #dfe0e6;
  --accent: #6d4aff;
  --accent-text: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121217;
    --surface: #1b1b22;
    --text: #ececf1;
    --muted: #9c9eab;
    --border: #2c2c36;
    --accent: #9179ff;
    --accent-text: #121217;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main,
header,
footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 16px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  padding-bottom: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
}

.brand img {
  width: 32px;
  height: 32px;
}

nav a {
  margin-left: 16px;
  color: var(--muted);
  text-decoration: none;
}

nav a:hover,
a {
  color: var(--accent);
}

.hero {
  padding: 40px 0 24px;
  text-align: center;
}

.hero img {
  width: 96px;
  height: 96px;
}

h1 {
  margin: 12px 0 8px;
  font-size: 2rem;
  line-height: 1.2;
}

h2 {
  margin: 36px 0 8px;
  font-size: 1.2rem;
}

.lead {
  margin: 0 auto 24px;
  max-width: 560px;
  color: var(--muted);
  font-size: 1.1rem;
}

.button {
  display: inline-block;
  margin: 4px;
  padding: 10px 20px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-text);
  font-weight: 600;
  text-decoration: none;
}

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

.note {
  color: var(--muted);
  font-size: 0.9rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin: 16px 0;
  padding: 0;
  list-style: none;
}

.grid li {
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
}

.grid strong {
  display: block;
  margin-bottom: 2px;
}

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

footer {
  margin-top: 48px;
  padding-top: 20px;
  padding-bottom: 32px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}