:root{--bg:#fbfaf7;--ink:#1a1a1a;--muted:#5f5f5f;--line:#e4e1da;--soft:#f1efe9;--red:#e5312b;--navy:#17213a;--max:980px}
@media(prefers-color-scheme:dark){:root{--bg:#121316;--ink:#f1f1f1;--muted:#a8a8a8;--line:#2a2c31;--soft:#1b1d22;--navy:#dfe4f2}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 -apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,"Hiragino Sans","Noto Sans JP",sans-serif}
a{color:inherit}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.site-header{border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:60px}
.brand{display:inline-flex;align-items:center;gap:8px;text-decoration:none;font-weight:800;font-size:22px;letter-spacing:.02em}
.brand .dot{width:.72em;height:.72em;border-radius:50%;background:var(--red);display:inline-block;margin:0 .04em}
.lang a{font-size:13px;text-decoration:none;color:var(--muted);margin-left:10px}
.lang a[aria-pressed=true]{color:var(--ink);font-weight:700;text-decoration:underline}
html[data-lang=ja] #en,html[data-lang=en] #ja{display:none}
.hero{padding:72px 0 48px}
.hero h1{font-size:clamp(30px,6vw,48px);line-height:1.2;margin:0 0 16px;letter-spacing:-.01em}
.hero .lead{font-size:18px;color:var(--muted);max-width:40em;margin:0 0 24px}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--red);font-weight:700;margin-bottom:12px}
.badges{display:flex;gap:12px;flex-wrap:wrap;margin:0;padding:0;list-style:none}
.badges li{border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:14px;background:var(--soft)}
section{padding:40px 0;border-top:1px solid var(--line)}
h2{font-size:24px;margin:0 0 16px}
h3{font-size:17px;margin:0 0 6px}
.grid{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.card{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:20px}
.card p{margin:0;color:var(--muted);font-size:15px}
.flow{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));margin:0;padding:0;list-style:none;counter-reset:s}
.flow li{position:relative;border:1px solid var(--line);border-radius:10px;padding:16px 14px 14px;font-size:14px;background:var(--bg)}
.flow li::before{counter-increment:s;content:counter(s);position:absolute;top:-10px;left:12px;background:var(--red);color:#fff;font-size:11px;font-weight:700;border-radius:999px;padding:0 8px;line-height:20px}
.note{font-size:14px;color:var(--muted)}
.cta{display:inline-block;background:var(--ink);color:var(--bg);text-decoration:none;padding:12px 20px;border-radius:10px;font-weight:700}
.cta.soon{opacity:.55;pointer-events:none}
footer{border-top:1px solid var(--line);padding:28px 0 40px;color:var(--muted);font-size:13px}
footer nav a{margin-right:14px}
article h2{margin-top:32px}
article ul{padding-left:1.2em}
dl dt{font-weight:700;margin-top:18px}
dl dd{margin:4px 0 0;color:var(--muted)}