body {
  margin: 0;
  background: #f8fafc;
  color: #0f172a;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
}

.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 40px 22px 64px;
}

.card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 18px;
  padding: 30px;
  box-shadow: 0 14px 40px rgba(15, 23, 42, 0.06);
}

h1 {
  margin: 0 0 10px;
  font-size: 34px;
  line-height: 1.15;
}

h2 {
  margin-top: 34px;
  padding-top: 18px;
  border-top: 1px solid #e2e8f0;
  font-size: 22px;
}

h3 {
  margin-top: 24px;
  font-size: 18px;
}

p, li {
  font-size: 16px;
}

.meta {
  color: #64748b;
  margin-bottom: 28px;
}

a {
  color: #0d9488;
  text-decoration: none;
  font-weight: 600;
}

a:hover {
  text-decoration: underline;
}

code {
  background: #f1f5f9;
  border-radius: 6px;
  padding: 2px 6px;
}

.notice {
  background: #f0fdfa;
  border: 1px solid #99f6e4;
  border-radius: 14px;
  padding: 16px;
}

.footer {
  margin-top: 28px;
  color: #94a3b8;
  font-size: 14px;
}