:root {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: #172033;
  background: #f4f7fb;
  font-size: 16px;
  line-height: 1.68;
}
* { box-sizing: border-box; }
body { margin: 0; }
main { max-width: 840px; margin: 0 auto; padding: 38px 20px 72px; }
article { background: #fff; border: 1px solid #dce4ef; border-radius: 18px; padding: 42px; box-shadow: 0 14px 40px rgba(26, 68, 129, .08); }
.eyebrow { color: #1457c8; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
h1 { margin: 4px 0 4px; font-size: clamp(2rem, 6vw, 3rem); line-height: 1.12; color: #123d80; }
h2 { margin: 34px 0 10px; font-size: 1.3rem; color: #173c71; }
h3 { margin: 24px 0 8px; font-size: 1.05rem; }
p, li { color: #475569; }
li + li { margin-top: 8px; }
a { color: #1457c8; }
.meta { margin: 10px 0 30px; color: #718096; }
.notice { margin: 24px 0; padding: 16px 18px; border-left: 4px solid #2474ee; border-radius: 8px; background: #eef5ff; }
table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: .95rem; }
th, td { text-align: left; vertical-align: top; border: 1px solid #dce4ef; padding: 12px; }
th { background: #eef4ff; color: #173c71; }
footer { margin-top: 38px; padding-top: 22px; border-top: 1px solid #dce4ef; color: #718096; font-size: .9rem; }
@media (max-width: 620px) { article { padding: 26px 20px; } table, thead, tbody, th, td, tr { display: block; } th { border-bottom: 0; } td { margin-bottom: 10px; } }
@media (prefers-color-scheme: dark) {
  :root { color: #edf4ff; background: #101827; }
  article { background: #172236; border-color: #2d3c55; }
  h1, h2, h3 { color: #c9dcff; }
  p, li, .meta, footer { color: #b8c4d8; }
  a { color: #8fbcff; }
  .notice, th { background: #21385d; color: #dbe8ff; }
  th, td, footer { border-color: #34455f; }
}