:root{--bg:#fafafa;--fg:#18181b;--muted:#52525b;--line:#e4e4e7;--card:#fff}
@media (prefers-color-scheme:dark){:root{--bg:#09090b;--fg:#fafafa;--muted:#a1a1aa;--line:#27272a;--card:#111113}}
*{box-sizing:border-box;margin:0}
body{background:var(--bg);color:var(--fg);font:16px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif}
a{color:inherit;text-underline-offset:3px}
.wrap{max-width:760px;margin:0 auto;padding:0 16px}
header{border-bottom:1px solid var(--line)}
header .wrap{display:flex;justify-content:space-between;align-items:center;height:60px;gap:16px}
.logo{font-weight:700;text-decoration:none;letter-spacing:-.01em}
nav{display:flex;gap:18px;font-size:14px;color:var(--muted);flex-wrap:wrap}
nav a{text-decoration:none}nav a:hover{color:var(--fg)}
main{padding:56px 0 72px}
.hero h1{font-size:clamp(2rem,6vw,2.75rem);line-height:1.15;letter-spacing:-.025em;margin-bottom:16px}
.hero p{color:var(--muted);font-size:1.075rem;max-width:600px}
section{margin-top:56px}
h2{font-size:1.25rem;margin-bottom:12px;letter-spacing:-.01em}
h3{font-size:1rem;margin:20px 0 6px}
p,li{color:var(--muted)}p+p{margin-top:12px}
ul{padding-left:20px}li+li{margin-top:6px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:18px}
.card h3{margin:0 0 6px;color:var(--fg)}.card p{font-size:15px}
dl{display:grid;grid-template-columns:max-content 1fr;gap:6px 20px}
dt{color:var(--fg);font-weight:500}dd{color:var(--muted)}
.en{border-top:1px solid var(--line);padding-top:40px}
.small{font-size:14px}
footer{border-top:1px solid var(--line);padding:24px 0;font-size:14px;color:var(--muted)}
footer .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}