*{box-sizing:border-box}html,body{margin:0;padding:0}
body{font-family:'Hiragino Kaku Gothic ProN','Yu Gothic',Meiryo,sans-serif;background:#f4f6fa;color:#1c2740;line-height:1.75}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
header.site{background:#0c1830;position:sticky;top:0;z-index:20}
.hd{display:flex;align-items:center;gap:18px;height:62px}
.logo{display:flex;align-items:center;gap:8px;text-decoration:none;color:#fff;font-weight:800;letter-spacing:.5px}
.logo img{border-radius:6px}
nav.main{display:flex;gap:4px;margin-left:auto;align-items:center;flex-wrap:wrap}
nav.main a{color:#c9d6ee;text-decoration:none;font-size:.92rem;padding:8px 12px;border-radius:8px}
nav.main a:hover{background:#16284a;color:#eebe3c}
.btn{display:inline-block;background:#eebe3c;color:#0c1830;font-weight:700;text-decoration:none;padding:11px 22px;border-radius:6px}
.btn:hover{filter:brightness(1.06)}
.btn.sm{padding:8px 14px;font-size:.9rem}
.btn.ghost{background:#fff;border:1px solid #c3cee2;color:#0c1830}
.nav-toggle{display:none;background:none;border:0;color:#fff;font-size:22px;margin-left:auto}
.hero{padding:76px 0;background:linear-gradient(160deg,#0c1830,#16305c);color:#fff}
.eyebrow{color:#eebe3c;font-weight:700;letter-spacing:1px;text-transform:uppercase;font-size:.82rem}
h1{font-size:clamp(2rem,5vw,3.3rem);margin:.3rem 0 1rem}
.sub{color:#d5def0;font-size:1.05rem;max-width:680px}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:22px}
.blk{padding:54px 0}
.blk.alt{background:#fff;border-top:1px solid #dfe6f1;border-bottom:1px solid #dfe6f1}
.sec{font-size:1.7rem;margin:0 0 .5rem;color:#0c1830}
.sec-sub{color:#5c6a85;margin:0 0 26px}
.grid{display:grid;gap:18px}.g3{grid-template-columns:repeat(3,1fr)}.g2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid #dfe6f1;border-radius:10px;padding:22px;box-shadow:0 2px 8px rgba(12,24,48,.05);border-top:3px solid #eebe3c}
.card h3{margin:0 0 .5rem;color:#0c1830}.card p{margin:0;color:#5c6a85;font-size:.95rem}
.split{display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:start}
.panel{background:#0c1830;border-radius:10px;padding:20px;color:#fff}
.ph-line{padding:10px 0;border-bottom:1px solid #1e3356}.ph-line:last-child{border-bottom:0}
.ph-line b{color:#eebe3c;display:block}.ph-line span{color:#c9d6ee;font-size:.92rem}
.note{background:#fff;border-left:3px solid #eebe3c;padding:12px 16px;border-radius:6px;color:#5c6a85;font-size:.92rem;margin-top:24px;border-top:1px solid #dfe6f1;border-right:1px solid #dfe6f1}
.note a{color:#0c1830;font-weight:600}
.page-hero{padding:50px 0;background:linear-gradient(160deg,#0c1830,#16305c);color:#fff}
.page-hero .eyebrow{color:#eebe3c}
.page-hero h1{color:#fff}
.page-hero .sub{color:#d5def0}
.steps{display:grid;gap:14px}
.step{background:#fff;border:1px solid #dfe6f1;border-radius:10px;padding:18px 20px}
.step strong{color:#0c1830}.step p{color:#5c6a85;margin:.3rem 0 0;font-size:.93rem}
.qa{background:#fff;border:1px solid #dfe6f1;border-radius:10px;padding:18px 20px;margin-bottom:14px}
.qa h3{color:#0c1830;margin:0 0 .4rem}.qa p{margin:0;color:#5c6a85}
footer.site{background:#0c1830;padding:34px 0;color:#8da0c0}
.ft{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.ft a{color:#c9d6ee;text-decoration:none;margin-right:16px;font-size:.9rem}
.narrow{max-width:760px}
@media(max-width:860px){.g3{grid-template-columns:1fr 1fr}.split{grid-template-columns:1fr}}
@media(max-width:560px){.g3,.g2{grid-template-columns:1fr}.nav-toggle{display:block}.main{display:none;flex-direction:column;width:100%;background:#0c1830;padding:10px 0}.main.open{display:flex}}