:root{--bg:#FBFAF7;--ink:#1E2A26;--sub:#3E4B46;--muted:#56635E;--green:#2E6A4C;--line:#E3E0D8;--pale:#EAF2EC}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:'Noto Sans JP',system-ui,sans-serif;line-height:1.8;font-size:16px}
a{color:var(--green)}a:hover{color:#1F4A35}
img{max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.narrow{max-width:760px;margin:0 auto;padding:0 20px}
.serif{font-family:'Zen Old Mincho',serif}
.logo{font-family:'Zen Old Mincho',serif;font-size:22px;font-weight:700;letter-spacing:.04em;color:var(--ink);text-decoration:none}
.logo span{color:var(--green)}
header.site{border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;flex-wrap:nowrap;gap:12px;align-items:center;justify-content:space-between;padding-top:14px;padding-bottom:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 26px;border-radius:999px;background:var(--green);color:#fff;font-weight:700;text-decoration:none}
.btn:hover{background:#1F4A35;color:#fff}
.btn.sm{min-height:44px;padding:0 18px;font-size:14px}
.btn.ghost{background:transparent;border:1.5px solid var(--green);color:var(--green)}
.eyebrow{margin:0 0 8px;font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--green)}
h1,h2,h3{line-height:1.45}
h2.sec{font-family:'Zen Old Mincho',serif;font-size:clamp(26px,3.6vw,36px);margin:0 0 16px}
section{padding:72px 0}
section.white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
section.pale{background:var(--pale)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px}
.card h3{margin:6px 0 8px;font-size:18px}
.card p{margin:0;color:var(--sub);font-size:15px}
.num{font-family:'Zen Old Mincho',serif;font-size:28px;color:var(--green)}
.row{display:flex;flex-wrap:wrap;gap:40px;align-items:center}
.row>.a{flex:1 1 340px;min-width:0}
.row>.b{flex:999 1 480px;min-width:0}
.lead{font-size:17px;color:var(--sub)}
details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 20px}
details summary{cursor:pointer;font-weight:700;list-style:none}
details summary::-webkit-details-marker{display:none}
details p{margin:10px 0 0;color:var(--sub)}
footer.site{border-top:1px solid var(--line);padding:32px 0 40px;font-size:13px;color:var(--muted)}
footer.site nav{display:flex;flex-wrap:wrap;gap:8px 24px;margin-bottom:16px;font-size:14px}
/* legal pages */
.doc{padding:48px 0 72px}
.doc h1{font-family:'Zen Old Mincho',serif;font-size:clamp(26px,3.6vw,34px);margin:0 0 8px}
.doc h2{font-size:19px;margin:36px 0 8px}
.doc p,.doc li{color:var(--sub)}
.doc table{width:100%;border-collapse:collapse;margin-top:20px;background:#fff}
.doc th,.doc td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top;font-size:15px}
.doc th{width:30%;background:#F4F2EC;color:var(--ink);font-weight:700}
.note{font-size:13px;color:var(--muted)}
@media (max-width:600px){.doc th{width:38%}}
.logo,.btn{white-space:nowrap}
@media (max-width:420px){.btn.sm{padding:0 14px;font-size:13px}.logo{font-size:20px}}