:root {
  --ground: #f7f6f2;
  --card: #ffffff;
  --ink: #16181d;
  --ink2: #2f333b;
  --line: #e3e1da;
  --accent: #1f6f5c;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ground: #15171b;
    --card: #1d2026;
    --ink: #eef0f4;
    --ink2: #d6dae1;
    --line: #2c3038;
    --accent: #7fd1b9;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font: 19px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
}
main { max-width: 680px; margin: 0 auto; padding: 48px 20px 72px; }
h1, h2, h3 { line-height: 1.25; text-wrap: balance; }
h1 { font-size: 36px; margin: 0 0 12px; }
h2 { font-size: 24px; margin: 40px 0 8px; }
p, li { color: var(--ink2); text-wrap: pretty; }
a { color: var(--accent); text-underline-offset: 3px; }
ul { padding-left: 22px; }
li { margin: 6px 0; }

.top { display: flex; align-items: center; gap: 12px; margin-bottom: 40px; font-weight: 600; }
.top a { color: var(--ink); text-decoration: none; }
.hero { text-align: center; margin-bottom: 32px; }
.hero img { width: 128px; height: 128px; border-radius: 28px; }
.hero p { font-size: 21px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px 22px;
  margin: 16px 0;
}
.card h2, .card h3 { margin-top: 0; }
.links { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.button {
  display: inline-block;
  padding: 14px 22px;
  border-radius: 14px;
  background: var(--accent);
  color: var(--ground);
  font-weight: 600;
  text-decoration: none;
}
footer { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--ink2); }