:root{--bg:#f4f4f5;--fg:#18181b;--muted:#52525b;--line:#e4e4e7;--accent:#ff4b1f}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font-family:'Satoshi',system-ui,-apple-system,'Segoe UI',sans-serif;line-height:1.7;font-size:17px}
a{color:var(--fg);text-underline-offset:3px}
a:hover{color:var(--accent)}
.site-header{display:flex;align-items:center;justify-content:space-between;gap:16px;max-width:820px;margin:0 auto;padding:24px 20px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:700;letter-spacing:-.01em}
.brand img{border-radius:10px}
.back{font-size:15px;font-weight:500}
main{max-width:820px;margin:0 auto;padding:8px 20px 56px}
.card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:clamp(24px,5vw,56px)}
h1{font-size:clamp(2rem,6vw,3.2rem);line-height:1.1;letter-spacing:-.03em;margin:0 0 8px}
h2{font-size:1.35rem;letter-spacing:-.01em;margin:40px 0 8px}
p,li{color:var(--muted)}
ul{padding-left:1.2em}
.updated{font-size:14px;color:var(--muted);margin:0 0 24px}
.site-footer{max-width:820px;margin:0 auto;padding:0 20px 40px;font-size:14px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between}
.site-footer a{color:var(--muted)}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:4px}
@media (prefers-color-scheme:dark){:root{--bg:#111113;--fg:#f4f4f5;--muted:#a1a1aa;--line:#27272a}.card{background:#18181b}}
.dyd{display:flex;justify-content:center;padding:0 16px 40px}.dyd a{display:flex;align-items:center;gap:10px;background:#fff;border-radius:12px;padding:10px 20px;box-shadow:0 6px 18px rgba(0,0,0,.12);text-decoration:none;color:#6b7280;font-size:15px;font-weight:500}.dyd img{height:40px;width:auto}