* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #0f172a;
  color: #f8fafc;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "YuGothic", "Meiryo", sans-serif;
  line-height: 1.8;
}

.page {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 64px;
}

header {
  padding: 28px;
  background: #1e293b;
  border: 1px solid rgba(148, 163, 184, 0.24);
  border-radius: 12px;
  margin-bottom: 24px;
}

h1 {
  font-size: 30px;
  line-height: 1.3;
  margin: 0 0 8px;
}

h2 {
  font-size: 20px;
  margin: 28px 0 8px;
  color: #7dd3fc;
}

p,
li {
  color: #dbe4f0;
  font-size: 15px;
}

a {
  color: #f0abfc;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

nav a,
.button {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 8px;
  background: rgba(125, 211, 252, 0.12);
  color: #7dd3fc;
  font-weight: 700;
  text-decoration: none;
}

section {
  padding: 20px 24px;
  background: rgba(30, 41, 59, 0.82);
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 10px;
  margin: 16px 0;
}

.updated {
  color: #cbd5e1;
  font-size: 14px;
  font-weight: 700;
}

footer {
  color: #94a3b8;
  font-size: 13px;
  margin-top: 28px;
}