:root{--bg:#f7f3ec;--paper:#fffdf9;--ink:#2a2a31;--sub:#66636d;--line:#e5ddcf;--accent:#2f3e63;--accent2:#b5523b;--soft:#eef0f6;--on:#fff}
@media (prefers-color-scheme:dark){:root{--bg:#16171c;--paper:#1f2027;--ink:#ecebef;--sub:#a3a1ab;--line:#34353e;--accent:#9fb0e0;--accent2:#e08a73;--soft:#262836;--on:#14161c}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.85 "Hiragino Sans","Yu Gothic UI","Noto Sans JP",sans-serif}
a{color:var(--accent)}img{max-width:100%}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:var(--paper);padding:6px}
header.site{background:var(--paper);border-bottom:1px solid var(--line)}
.bar{max-width:980px;margin:0 auto;padding:10px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.logo{font-family:"Hiragino Mincho ProN","Yu Mincho","Noto Serif JP",serif;font-size:20px;color:var(--ink);text-decoration:none;letter-spacing:.06em}
nav ul{list-style:none;margin:0;padding:0;display:flex;gap:14px;flex-wrap:wrap;font-size:14px}nav a{text-decoration:none;color:var(--ink)}
.hero{padding:56px 16px 40px;text-align:center;background:linear-gradient(var(--soft),var(--bg))}
.hero h1{font-family:"Hiragino Mincho ProN","Yu Mincho","Noto Serif JP",serif;font-size:28px;line-height:1.5;margin:0 0 12px}
main{max-width:820px;margin:0 auto;padding:0 16px 64px}
h2{font-family:"Hiragino Mincho ProN","Yu Mincho","Noto Serif JP",serif;font-size:22px;margin:44px 0 12px;padding-bottom:6px;border-bottom:1px solid var(--line)}
h3{font-size:17px;margin:20px 0 6px}
.cta{display:inline-block;margin:16px auto;padding:14px 28px;border-radius:999px;background:var(--accent2);color:var(--on);text-decoration:none;font-weight:700}
.cta.sub{background:transparent;color:var(--accent);border:1.5px solid var(--accent)}
.center{text-align:center}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:16px}
table{width:100%;border-collapse:collapse;background:var(--paper)}th,td{border-bottom:1px solid var(--line);padding:10px;text-align:left;vertical-align:top}th{width:8em;color:var(--sub);font-weight:600}
details{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:10px 14px;margin:8px 0}summary{cursor:pointer;font-weight:600}
ol.steps{padding-left:1.4em}ol.steps li{margin:6px 0}
.crumb{font-size:13px;color:var(--sub);margin:16px 0 0}.crumb a{color:var(--sub)}
.note{font-size:12px;color:var(--sub)}
.banner{display:block;background:var(--accent);color:var(--on);border-radius:12px;padding:18px;text-decoration:none;margin:20px 0}
.banner b{font-size:18px}
footer.site{border-top:1px solid var(--line);background:var(--paper);padding:24px 16px;font-size:13px;color:var(--sub)}
footer.site .in{max-width:980px;margin:0 auto}
@media (max-width:600px){.hero h1{font-size:23px}nav ul{gap:10px}}