*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: #0d0f18;
  color: #d4d8e8;
  font-family: system-ui, -apple-system, sans-serif;
  line-height: 1.6;
}
a { color: #4d7fff; }
header {
  background: #12151f;
  border-bottom: 1px solid #1e2235;
  padding: 13px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
header .brand { font-size: 1.05rem; font-weight: 700; color: #fff; letter-spacing: .02em; }
main {
  max-width: 640px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}
main > h1 { font-size: 1.6rem; color: #fff; margin-bottom: 6px; }
.updated { color: #7d87af; font-size: .85rem; margin-bottom: 28px; }
h2 { color: #fff; font-size: 1.05rem; margin: 28px 0 10px; }
p { margin-bottom: 12px; color: #b7bdd6; }
ul { margin: 0 0 12px 20px; color: #b7bdd6; }
li { margin-bottom: 8px; }
strong { color: #d4d8e8; }
footer {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 24px 32px;
  color: #555;
  font-size: .75rem;
}