:root{--navy:#251a63;--green:#0b8f14;--bg:#f2f3f7;--card:#fff;--ink:#14132a;--line:#dcdcea;--mut:#5b5b78;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
@media (prefers-color-scheme:dark){:root{--bg:#0e0c1a;--card:#1a1730;--ink:#efeefa;--line:#34305a;--mut:#a7a5c8;--navy:#b3aaff;--green:#3fd04a}}
*{box-sizing:border-box}html{scroll-padding-top:env(safe-area-inset-top,0px)}body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.75 'DM Sans','Zen Kaku Gothic New',sans-serif}
.w{max-width:880px;margin:0 auto;padding:0 18px}header{position:sticky;top:env(safe-area-inset-top,0px);background:var(--card);border-bottom:1px solid var(--line);z-index:5}
header .w{display:flex;align-items:center;gap:12px;height:56px}header img{width:34px;height:34px}header b{font-family:'Fraunces',serif;color:var(--navy)}header a{text-decoration:none}
.btn{margin-left:auto;background:var(--green);color:#fff!important;padding:9px 18px;border-radius:10px;font-weight:700;text-decoration:none}
.crumb{font-size:14px;color:var(--mut);padding-top:16px}.crumb a{color:var(--mut)}
h1{font-family:'Fraunces','Zen Kaku Gothic New',serif;font-size:clamp(30px,5vw,46px);line-height:1.15;color:var(--navy);margin:8px 0 14px}
h2{font-family:'Fraunces','Zen Kaku Gothic New',serif;color:var(--navy);font-size:25px;margin:0 0 12px}section{padding:24px 0;border-top:1px solid var(--line)}
p{max-width:40em}a{color:var(--green)}ul.l{padding:0;list-style:none;display:grid;gap:8px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}ul.l li{background:var(--card);border-left:4px solid var(--green);padding:9px 13px}
details{border-bottom:1px solid var(--line);padding:11px 0}summary{cursor:pointer;font-weight:700}a:focus-visible,summary:focus-visible{outline:3px solid var(--navy);outline-offset:2px}
.cta{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;margin:26px 0}.cta .btn{display:inline-block;margin:0}footer{padding:22px 0;font-size:14px;color:var(--mut)}