body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: #f6f7fb;
  color: #161b2d;
  line-height: 1.55;
}

main {
  max-width: 860px;
  margin: 32px auto;
  padding: 28px;
  background: #ffffff;
  border: 1px solid #d7dced;
  border-radius: 16px;
  box-shadow: 0 12px 34px rgba(20, 35, 80, 0.08);
}

h1 {
  margin: 0 0 8px;
  font-size: 1.8rem;
}

h2 {
  margin-top: 24px;
  font-size: 1.15rem;
}

p,
li {
  color: #2a3355;
}

ul {
  padding-left: 20px;
}

a {
  color: #1d4ed8;
}

.meta {
  margin: 0;
  font-size: 0.92rem;
  color: #5a678f;
}

.nav {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.nav a {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid #c7d0ee;
  text-decoration: none;
  background: #f3f6ff;
}

code {
  background: #eef2ff;
  padding: 2px 6px;
  border-radius: 6px;
}