:root{--navy:#10243f;--red:#b62236;--paper:#fff;--ink:#172033;--muted:#647084;--line:#dce2ea;--bg:#f4f6f9}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;line-height:1.8}
a{color:#0b5db7}.top{background:linear-gradient(135deg,var(--navy),#1e416d);color:#fff;padding:28px 20px}.top-inner,.wrap{max-width:900px;margin:auto}.brand{font-size:13px;letter-spacing:.12em;opacity:.8}.top h1{margin:8px 0 0;font-size:clamp(26px,5vw,42px);line-height:1.3}.crumb{margin-top:10px;font-size:13px}.crumb a{color:#fff}.wrap{padding:30px 18px 60px}.card{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:clamp(20px,4vw,38px);box-shadow:0 8px 24px rgba(16,36,63,.06)}h2{font-size:21px;margin:34px 0 10px;padding-left:12px;border-left:5px solid var(--red)}h2:first-child{margin-top:0}h3{font-size:17px;margin:24px 0 6px}p,li{font-size:15px}.lead{font-size:16px;color:#344158}.note{background:#f7f9fc;border:1px solid var(--line);border-radius:12px;padding:14px 16px;color:#48556a}.meta{font-size:13px;color:var(--muted);margin-top:28px}.contact{display:inline-block;background:var(--navy);color:#fff;text-decoration:none;font-weight:700;border-radius:10px;padding:11px 17px}.site-footer{text-align:center;padding:22px 18px 35px;color:#5b6678;font-size:12px}.legal-footer-links{display:flex;flex-wrap:wrap;gap:8px 16px;justify-content:center;margin-top:12px}.legal-footer-links a{color:inherit;text-decoration:none;border-bottom:1px solid currentColor}.toc{display:grid;gap:9px;margin:20px 0}.toc a{background:#f7f9fc;border:1px solid var(--line);border-radius:9px;padding:8px 12px;text-decoration:none}ul{padding-left:1.25em}