body {
  font-family: Arial, sans-serif;
  max-width: 980px;
  margin: 28px auto;
  padding: 0 16px 32px;
  line-height: 1.6;
  color: #1d2a35;
  background: #ffffff;
}

h1,
h2 {
  color: #123b6d;
}

a {
  color: #0f5a93;
}

nav {
  margin-bottom: 14px;
}

nav a {
  margin-right: 14px;
}

.hero {
  margin: 10px 0 16px;
  border: 1px solid #d8e5ef;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 20px rgba(18, 59, 109, 0.08);
}

.hero img {
  display: block;
  width: 100%;
  height: auto;
}

.box {
  background: #f7fbff;
  border: 1px solid #d7e6f3;
  border-radius: 10px;
  padding: 14px;
}

.muted {
  color: #4f6478;
}