:root{--bg:#f6f8fb;--card:#fff;--ink:#1c2430;--mut:#5b6677;--brand:#1f5eff;--brand2:#0b2a6f;--line:#e2e7ef}
@media (prefers-color-scheme:dark){:root{--bg:#10151d;--card:#18202b;--ink:#e8edf5;--mut:#a4afc0;--brand:#6c9bff;--brand2:#9db8ff;--line:#2a3544}}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.7}
a{color:var(--brand)}img{max-width:100%;height:auto;display:block}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header.site{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;padding-top:12px;padding-bottom:12px}
.logo{font-weight:800;font-size:1.25rem;color:var(--ink);text-decoration:none}.logo span{color:var(--brand)}
nav a{margin-left:16px;text-decoration:none;color:var(--mut);font-weight:600;font-size:.95rem}nav a:hover{color:var(--brand)}
.hero{padding:56px 0 36px}.hero h1{font-size:2.3rem;line-height:1.2;margin:0 0 12px}.hero p{color:var(--mut);max-width:680px;font-size:1.1rem}
.notice{background:#fff7e0;border:1px solid #f0d58a;color:#4a3b05;padding:14px 16px;border-radius:10px;font-size:.93rem;margin:18px 0}
@media (prefers-color-scheme:dark){.notice{background:#2c2610;border-color:#6b5a1b;color:#f3e3a4}}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:20px;margin:24px 0 48px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;flex-direction:column}
.card .b{padding:16px 18px 20px}.card h3{margin:0 0 8px;font-size:1.1rem;line-height:1.35}.card h3 a{color:var(--ink);text-decoration:none}.card p{margin:0;color:var(--mut);font-size:.95rem}
article.post{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:28px;margin:28px 0 48px}
article.post h1{font-size:2rem;line-height:1.25;margin-top:0}article.post h2{margin-top:2rem;font-size:1.4rem;color:var(--brand2)}
.meta{color:var(--mut);font-size:.9rem;margin-bottom:14px}
.page{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:28px;margin:28px 0 48px}
.page h1{margin-top:0}.page h2{margin-top:1.8rem;font-size:1.25rem}
footer.site{background:var(--card);border-top:1px solid var(--line);padding:28px 0;color:var(--mut);font-size:.9rem}
footer.site a{color:var(--mut);margin-right:14px}
label{display:block;font-weight:600;margin:14px 0 6px}input,textarea{width:100%;padding:11px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);font:inherit}
button,.btn{background:var(--brand);color:#fff;border:0;padding:12px 22px;border-radius:8px;font-weight:700;cursor:pointer;margin-top:16px;text-decoration:none;display:inline-block}
.related{margin-top:2rem;padding-top:1rem;border-top:1px solid var(--line)}
#cc{position:fixed;left:12px;right:12px;bottom:12px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;display:none;z-index:9;box-shadow:0 6px 24px rgba(0,0,0,.18);max-width:720px;margin:auto;font-size:.9rem}
#cc button{margin-top:8px;padding:8px 16px}
@media(max-width:600px){.hero h1{font-size:1.7rem}article.post,.page{padding:18px}nav a{margin-left:10px;font-size:.88rem}}