:root {
  color-scheme: light;
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, system-ui, sans-serif;
  color: #172a40;
  background: #f3f1e9;
  line-height: 1.85;
  font-synthesis: none;
}
* { box-sizing: border-box; }
body { margin: 0; }
a { color: #12588b; text-decoration-thickness: .08em; text-underline-offset: .18em; }
a:focus-visible { outline: 3px solid #b78634; outline-offset: 3px; }
.page { width: min(100% - 32px, 820px); margin-inline: auto; }
.masthead { padding: 18px 0; border-bottom: 1px solid #d5d2c8; }
.masthead a { color: #17344e; font-weight: 700; text-decoration: none; }
.crumbs { margin: 22px 0 8px; color: #536174; font-size: .9rem; }
main { padding: 10px 0 52px; }
.eyebrow { margin: 0 0 6px; color: #8b6423; font-size: .78rem; font-weight: 800; letter-spacing: .12em; }
h1, h2, h3 { color: #142c43; line-height: 1.4; }
h1 { margin: 0 0 14px; font-size: clamp(1.8rem, 5vw, 2.7rem); }
h2 { margin-top: 2.2em; font-size: 1.35rem; }
h3 { margin-top: 1.6em; font-size: 1.08rem; }
.dek { color: #43566a; font-size: 1.08rem; }
.meta { color: #596779; font-size: .88rem; }
.panel { margin: 22px 0; padding: 18px 20px; border: 1px solid #d5d2c8; border-radius: 12px; background: #fffdf8; }
.panel > :first-child { margin-top: 0; }
.panel > :last-child { margin-bottom: 0; }
.notice { border-left: 4px solid #aa7a2b; }
.steps { padding-left: 1.4em; }
.steps li { padding: 0 0 8px 4px; }
.table-wrap { overflow-x: auto; margin: 18px 0; }
table { width: 100%; border-collapse: collapse; background: #fffdf8; }
th, td { padding: 10px 12px; border: 1px solid #d8d7d0; text-align: left; vertical-align: top; }
th { background: #e8edf0; }
code, kbd { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
code { padding: .08em .3em; border-radius: 4px; background: #e9edf0; overflow-wrap: anywhere; }
.math { padding: 12px 14px; border-radius: 8px; background: #e8edf0; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; overflow-wrap: anywhere; }
.card-list { display: grid; gap: 12px; padding: 0; list-style: none; }
.card-list li { padding: 16px 18px; border: 1px solid #d5d2c8; border-radius: 10px; background: #fffdf8; }
.card-list p { margin: 5px 0 0; }
.related { margin-top: 34px; padding-top: 20px; border-top: 1px solid #d5d2c8; }
footer { padding: 22px 0 34px; border-top: 1px solid #d5d2c8; color: #536174; font-size: .9rem; }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 18px; }
@media (max-width: 520px) {
  .page { width: min(100% - 24px, 820px); }
  .panel { padding: 15px; }
  th, td { padding: 8px; }
}