*{box-sizing:border-box}
body{font-family:"Yu Gothic","Meiryo","Hiragino Kaku Gothic ProN",sans-serif;color:#1a2230;background:#f4f7fb;margin:0;line-height:1.85;font-size:16px}
.wrap{max-width:760px;margin:0 auto;padding:18px}
.nav{font-size:13px;color:#5a6b85;margin:6px 0 14px}
.nav a{color:#1d4e89;text-decoration:none}
header.hero{background:linear-gradient(135deg,#0f2a4a,#1d4e89);color:#fff;padding:26px 22px;border-radius:14px;margin-bottom:18px}
header.hero h1{margin:0 0 8px;font-size:24px;line-height:1.5}
header.hero p{margin:0;font-size:14px;opacity:.92}
article{background:#fff;border-radius:14px;padding:24px 22px;box-shadow:0 1px 5px rgba(15,42,74,.08)}
article h2{font-size:20px;color:#0f2a4a;border-left:5px solid #1d4e89;padding-left:12px;margin:30px 0 12px}
article h3{font-size:17px;color:#1d4e89;margin:22px 0 8px}
article p{margin:12px 0}
article ul,article ol{margin:12px 0;padding-left:1.4em}
article li{margin:5px 0}
article strong{color:#0b3d6b}
table{border-collapse:collapse;width:100%;margin:16px 0;font-size:14.5px}
th,td{border:1px solid #d4dbe6;padding:8px 10px;text-align:left}
th{background:#eef3fa;color:#0f2a4a}
.toc{background:#f5f8fd;border:1px solid #dbe5f1;border-radius:10px;padding:14px 18px;font-size:14px}
.toc a{color:#1d4e89;text-decoration:none}
.cta{background:linear-gradient(135deg,#0f2a4a,#1d4e89);color:#fff;border-radius:12px;padding:22px;margin:26px 0;text-align:center}
.cta h3{margin:0 0 8px;color:#ffd76a;font-size:18px;border:none;padding:0}
.cta p{font-size:14px;opacity:.95;margin:6px 0}
.cta a.btn{display:inline-block;margin-top:10px;background:#e8552d;color:#fff;padding:13px 24px;border-radius:9px;font-weight:800;text-decoration:none}
.cta a.btn:hover{background:#d2461f}
.related{background:#fff;border-radius:12px;padding:18px 22px;margin-top:16px;box-shadow:0 1px 5px rgba(15,42,74,.08)}
.related h3{margin:0 0 8px;font-size:16px;color:#0f2a4a}
.related a{display:block;color:#1d4e89;text-decoration:none;padding:5px 0;border-bottom:1px dashed #e2e8f1}
footer{text-align:center;font-size:12px;color:#7a8699;margin:24px 0;line-height:1.7}
footer a{color:#5a6b85}
.card-link{display:block;background:#fff;border-radius:12px;padding:18px 20px;margin-bottom:12px;box-shadow:0 1px 5px rgba(15,42,74,.08);text-decoration:none;color:inherit}
.card-link:hover{box-shadow:0 2px 10px rgba(15,42,74,.15)}
.card-link h2{font-size:18px;color:#0f2a4a;margin:0 0 6px;border:none;padding:0}
.card-link p{font-size:14px;color:#556;margin:0}
.note-official{font-size:12px;color:#9aa7b8;margin-top:14px}