body {
  margin: 0;
  background: #f9fafb;
  color: #111827;
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  line-height: 1.6;
}
header, main, footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}
header { padding-top: 24px; }
.marca {
  font-weight: 800;
  font-size: 20px;
  color: #047857;
  text-decoration: none;
}
main {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 16px;
  margin-top: 20px;
  padding: 28px 28px 20px;
}
h1 { font-size: 28px; letter-spacing: -0.015em; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 28px 0 8px; }
.fecha { color: #6b7280; font-size: 14px; margin: 0 0 20px; }
p, li { font-size: 15px; }
ul { padding-left: 20px; }
a { color: #047857; font-weight: 600; }
footer {
  padding-top: 20px;
  padding-bottom: 40px;
  font-size: 14px;
  color: #6b7280;
}
@media (max-width: 520px) {
  main { padding: 22px 18px 14px; border-radius: 12px; }
  h1 { font-size: 24px; }
}