:root{--white:#F0F4F8;--navy:#1B2A38;--steel:#4A6B82;--aqua:#20B2AA;--text:#222B32;--border:#D0D8E2}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Noto Sans JP",sans-serif;color:var(--text);background:var(--white);line-height:1.8;font-size:16px}
h1,h2,h3{font-family:"Noto Serif JP",serif;color:var(--navy);line-height:1.5;font-weight:700}
a{color:var(--steel)}a:hover{color:var(--aqua)}
img{max-width:100%;display:block}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
header.site{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--navy);font-weight:700;letter-spacing:.22em;font-size:15px;white-space:nowrap}
.brand svg{width:38px;height:38px}
nav.main{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
nav.main a{text-decoration:none;color:var(--navy);font-size:14px;padding-top:6px;padding-bottom:6px;display:inline-block;min-height:24px}
nav.main a[aria-current=page]{border-bottom:2px solid var(--aqua)}
.btn{display:inline-block;padding:12px 24px;background:var(--aqua);color:#fff!important;text-decoration:none;font-weight:700;border-radius:2px;border:1px solid var(--aqua);font-size:15px}
.btn:hover{background:var(--steel);border-color:var(--steel)}
.btn.ghost{background:transparent;color:var(--navy)!important;border-color:var(--navy)}
.btn.ghost:hover{background:var(--navy);color:#fff!important}
nav.main .btn{padding:8px 16px;font-size:13px;color:#fff}
.menu-toggle{display:none;background:none;border:1px solid var(--navy);padding:8px 12px;color:var(--navy);cursor:pointer}
.hero{background:var(--navy);color:#fff}
.hero .wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center;padding-top:56px;padding-bottom:56px}
.hero h1{color:#fff;font-size:clamp(24px,3.2vw,36px);margin:.3em 0}
.hero p{color:#dbe4ec}
.hero img{border:1px solid var(--steel);aspect-ratio:16/10;object-fit:cover;width:100%}
.hero .actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.hero .btn.ghost{color:#fff!important;border-color:#fff}
.eyebrow{color:var(--aqua);letter-spacing:.2em;font-size:12px;font-weight:700;text-transform:uppercase}
.page-head{background:var(--navy);color:#fff}
.page-head .wrap{padding-top:48px;padding-bottom:48px}
.page-head h1{color:#fff;margin:.2em 0;font-size:clamp(24px,3vw,34px)}
.page-head p{color:#dbe4ec;max-width:760px;margin:0}
.crumb{font-size:12px;color:#9fb3c4}.crumb a{color:#9fb3c4}
section.block{padding:56px 0;border-bottom:1px solid var(--border)}
section.block.alt{background:#fff}
section.block h2{font-size:26px;margin:0 0 .6em;padding-left:14px;border-left:4px solid var(--aqua)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.two img,.fig img{width:100%;aspect-ratio:16/9;object-fit:cover;border:1px solid var(--border)}
.fig figcaption{font-size:12px;color:var(--steel);margin-top:6px}
.fig{margin:0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}
.card{background:#fff;border:1px solid var(--border);padding:22px;border-top:3px solid var(--steel)}
.card h3{font-size:17px;margin:.2em 0 .5em}
.card p{font-size:14.5px;margin:.4em 0}
.badge{display:inline-block;background:var(--steel);color:#fff;font-size:12px;padding:2px 10px;border-radius:2px}
.price{color:var(--navy);font-weight:700;font-size:18px}
table{border-collapse:collapse;width:100%;background:#fff;font-size:14.5px}
th,td{border:1px solid var(--border);padding:10px 14px;text-align:left;vertical-align:top}
th{background:var(--navy);color:#fff;font-weight:500}
.tbl{overflow-x:auto}
.notice{background:#fff;border-left:4px solid var(--steel);padding:16px 20px;font-size:14px;margin:24px 0}
.service{background:#fff;border:1px solid var(--border);padding:28px;margin-bottom:24px}
.service h3{margin-top:0;font-size:20px}
.service .num{color:var(--aqua);font-weight:700;letter-spacing:.1em}
.service dl{display:grid;grid-template-columns:110px 1fr;gap:6px 16px;margin:0}
.service dt{font-weight:700;color:var(--navy)}.service dd{margin:0}
article.post{background:#fff;border:1px solid var(--border);padding:32px;margin-bottom:28px}
article.post h3{font-size:22px;margin-top:0}
article.post .meta{font-size:12px;color:var(--steel)}
.toc{columns:2;font-size:14px}
.month{background:#fff;border:1px solid var(--border);padding:18px 20px}
.month h3{margin:0 0 .3em;font-size:17px}.month h3 span{color:var(--aqua);margin-right:8px}
form label{display:block;font-weight:700;margin-top:16px;color:var(--navy);font-size:14px}
form input,form select,form textarea{width:100%;padding:10px;border:1px solid var(--border);font:inherit;background:#fff}
ol.steps{counter-reset:s;list-style:none;padding:0}
ol.steps li{counter-increment:s;background:#fff;border:1px solid var(--border);padding:18px 20px 18px 70px;margin-bottom:12px;position:relative}
ol.steps li::before{content:counter(s);position:absolute;left:18px;top:14px;width:36px;height:36px;border-radius:50%;background:var(--aqua);color:#fff;text-align:center;line-height:36px;font-weight:700}
.legal h3{margin-top:1.6em;font-size:17px}
footer.site{background:var(--navy);color:#c9d6e2;padding:48px 0 24px;font-size:14px}
footer.site a{color:#c9d6e2}
footer.site .brand{color:#fff;margin-bottom:12px}
footer.site .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
footer.site h4{color:#fff;margin:0 0 .6em;font-size:14px;letter-spacing:.1em}
footer.site ul{list-style:none;padding:0;margin:0}
footer.site .copy{border-top:1px solid var(--steel);margin-top:28px;padding-top:16px;font-size:12px}
@media(max-width:860px){
.hero .wrap,.two{grid-template-columns:1fr}
.menu-toggle{display:block}
nav.main{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:flex-start;padding:16px 24px;border-bottom:1px solid var(--border)}
nav.main.open{display:flex}
footer.site .cols{grid-template-columns:1fr}.toc{columns:1}
.service dl{grid-template-columns:1fr}
}