:root{--bg:#fafaf8;--fg:#1c1c1a;--sub:#6a6a64;--line:#e4e4de;--card:#fff;--accent:#2f5bea;--notice:#fff6e0;--notice-line:#f0d9a0}
@media(prefers-color-scheme:dark){:root{--bg:#141413;--fg:#ececea;--sub:#a0a09a;--line:#2c2c29;--card:#1c1c1a;--accent:#8aa6ff;--notice:#2a2412;--notice-line:#5a4a1c;color-scheme:dark}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.85 system-ui,-apple-system,"Hiragino Sans","Yu Gothic UI","Noto Sans JP",Meiryo,sans-serif}
a{color:var(--accent);text-underline-offset:3px}
.wrap{max-width:680px;margin:0 auto;padding:0 20px 56px}
header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:22px 0;margin-bottom:8px}
.logo{font-weight:800;font-size:1.15rem;letter-spacing:-.01em;color:var(--fg);text-decoration:none}
nav{display:flex;gap:4px}
nav a{color:var(--sub);text-decoration:none;font-size:.9rem;padding:6px 12px;border-radius:999px}
nav a:hover{color:var(--fg)}
nav a[aria-current]{background:var(--fg);color:var(--bg)}
.notice{background:var(--notice);border:1px solid var(--notice-line);border-radius:12px;padding:12px 16px;font-size:.92rem;margin:0 0 40px}
.notice strong{display:block}
h1{font-size:2.1rem;line-height:1.35;letter-spacing:-.02em;margin:0 0 16px;text-wrap:balance}
h2{font-size:1.25rem;margin:2.6rem 0 .6rem;letter-spacing:-.01em}
h4{font-size:1rem;margin:1.8rem 0 0}
p{margin:.8rem 0}
.lead{font-size:1.05rem;color:var(--sub);margin:0 0 28px}
.btn{display:inline-block;background:var(--fg);color:var(--bg);font-weight:700;text-decoration:none;padding:13px 24px;border-radius:999px}
.btn:hover{opacity:.85}
.cta{display:flex;flex-wrap:wrap;gap:12px 20px;align-items:center;margin:0 0 40px}
.btn-sub{color:var(--sub)}
.links{list-style:none;margin:.8rem 0;padding:0;border:1px solid var(--line);border-radius:14px;background:var(--card);overflow:hidden}
.links li+li{border-top:1px solid var(--line)}
.links a{display:block;padding:14px 18px;text-decoration:none;color:var(--fg)}
.links a:hover{background:var(--bg)}
.links a:after{content:"\2192";float:right;color:var(--sub)}
.media{margin-top:48px;padding-top:20px;border-top:1px solid var(--line);font-size:.85rem;color:var(--sub)}
.media img{margin:8px 10px 0 0;vertical-align:middle}
footer{margin-top:56px;padding-top:18px;border-top:1px solid var(--line);font-size:.85rem;color:var(--sub)}
footer a{color:var(--sub)}
@media(max-width:520px){h1{font-size:1.65rem}}