:root {
  --bg-top: #24c6b6;
  --bg-bottom: #065c56;
  --card: rgba(255, 255, 255, 0.96);
  --text: #0f172a;
  --muted: #475569;
  --link: #0d9488;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(160deg, var(--bg-top), var(--bg-bottom));
  line-height: 1.6;
}
.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}
.card {
  background: var(--card);
  border-radius: 20px;
  padding: 28px 24px 32px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.18);
}
h1 { margin: 0 0 8px; font-size: 1.75rem; }
.meta { color: var(--muted); margin-bottom: 24px; font-size: 0.95rem; }
h2 {
  margin: 28px 0 10px;
  font-size: 1.15rem;
  color: #115e59;
}
p, li { font-size: 1rem; }
ul { padding-left: 1.25rem; }
a { color: var(--link); }
nav {
  margin-bottom: 18px;
  font-size: 0.95rem;
}
nav a {
  color: white;
  text-decoration: none;
  font-weight: 600;
  margin-right: 16px;
}
nav a:hover { text-decoration: underline; }
footer {
  margin-top: 24px;
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
  text-align: center;
}