:root {
  --accent: #0d9488;
  --accent-strong: #0b7a70;
  --text: #111;
  --muted: #5d6563;
  --background: #fff;
  --card: #f2f5f4;
  --line: #e1e7e5;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #2dd4bf;
    --accent-strong: #5eead4;
    --text: #f2f5f4;
    --muted: #a3adab;
    --background: #0c1110;
    --card: #17201f;
    --line: #26302e;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

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

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

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

header.top {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

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

header.top img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
}

nav {
  margin-left: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  font-size: 15px;
}

nav a {
  text-decoration: none;
}

main {
  padding: 32px 0 48px;
}

h1 {
  font-size: 34px;
  line-height: 1.15;
  margin: 0 0 12px;
}

h2 {
  font-size: 22px;
  margin: 36px 0 8px;
}

h3 {
  font-size: 18px;
  margin: 24px 0 6px;
}

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

.hero {
  text-align: center;
  padding: 24px 0 8px;
}

.hero img {
  width: 128px;
  height: 128px;
  border-radius: 28px;
  box-shadow: 0 12px 32px rgb(13 148 136 / 0.25);
}

.hero .tagline {
  font-size: 21px;
  color: var(--muted);
  margin: 0 0 24px;
}

.badge {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--card);
  color: var(--muted);
  font-size: 15px;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin: 36px 0;
  padding: 0;
  list-style: none;
}

.features li {
  background: var(--card);
  border-radius: 16px;
  padding: 16px;
}

.features strong {
  display: block;
  margin-bottom: 4px;
}

.note {
  background: var(--card);
  border-radius: 16px;
  padding: 16px 20px;
}

footer {
  border-top: 1px solid var(--line);
  padding: 20px 0 40px;
  font-size: 14px;
  color: var(--muted);
}

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