* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.65;
  color: #1a1a1a;
  background: #f7f8fa;
  padding: 24px 16px 48px;
}
.wrap { max-width: 820px; margin: 0 auto; background: #fff; border-radius: 12px; padding: 32px 28px; box-shadow: 0 2px 12px rgba(0,0,0,.06); }
header { border-bottom: 1px solid #e8eaed; padding-bottom: 20px; margin-bottom: 28px; }
.brand { font-size: 13px; font-weight: 600; color: #2563eb; text-transform: uppercase; letter-spacing: .04em; }
h1 { font-size: 1.75rem; margin: 8px 0 6px; color: #111; }
.meta { font-size: 14px; color: #666; }
h2 { font-size: 1.15rem; margin: 28px 0 10px; color: #111; }
p, li { margin-bottom: 10px; font-size: 15px; }
ul, ol { padding-left: 22px; margin-bottom: 14px; }
a { color: #2563eb; }
.note { background: #eff6ff; border-left: 4px solid #2563eb; padding: 12px 14px; margin: 16px 0; font-size: 14px; border-radius: 0 8px 8px 0; }
footer { margin-top: 36px; padding-top: 20px; border-top: 1px solid #e8eaed; font-size: 13px; color: #666; }
@media (max-width: 600px) {
  .wrap { padding: 22px 18px; }
  h1 { font-size: 1.45rem; }
}