:root {
  --green: #009e73;
  --green-dark: #006b4c;
  --gold: #f5c443;
  --ink: #1c1c1e;
  --ink-2: #5b5b60;
  --bg: #f6f6f3;
  --card: #ffffff;
  --line: #e4e3de;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f2f2f0;
    --ink-2: #b4b3ad;
    --bg: #141413;
    --card: #1f1f1d;
    --line: #34332f;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
}
header {
  background: linear-gradient(135deg, #00b888, var(--green-dark));
  color: #fff;
  padding: 48px 16px 40px;
  text-align: center;
}
header img { width: 96px; height: 96px; border-radius: 22px; box-shadow: 0 10px 30px rgba(0,0,0,.25); }
header h1 { margin: 16px 0 4px; font-size: 2rem; }
header p { margin: 0; opacity: .9; }
nav { display: flex; gap: 20px; justify-content: center; margin-top: 20px; flex-wrap: wrap; }
nav a { color: #fff; text-decoration: none; font-weight: 600; opacity: .9; }
nav a:hover { opacity: 1; text-decoration: underline; }
main { max-width: 720px; margin: 0 auto; padding: 32px 16px 64px; }
section {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px 24px;
  margin-bottom: 16px;
}
h2 { margin-top: 0; font-size: 1.25rem; }
p, li { color: var(--ink-2); }
a { color: var(--green); }
.features { display: grid; gap: 12px; padding: 0; list-style: none; }
.features li { padding-left: 28px; position: relative; }
.features li::before { content: "●"; color: var(--gold); position: absolute; left: 4px; }
footer { text-align: center; color: var(--ink-2); font-size: .85rem; padding: 0 16px 40px; }