:root{--bg:#ffffff;--fg:#1a1d24;--muted:#5b6270;--brand:#2b59c3;--line:#e5e8ee;--card:#f7f8fb}
@media (prefers-color-scheme:dark){:root{--bg:#12141a;--fg:#e8eaf0;--muted:#a0a6b4;--brand:#7aa2ff;--line:#262a33;--card:#1a1d25}}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--fg);line-height:1.65}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:960px;margin:0 auto;padding:0 16px}
header{border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--bg);z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{font-weight:700;font-size:1.2rem;color:var(--fg)}
.menu{display:flex;gap:20px;list-style:none;margin:0;padding:0}
.menu a{color:var(--muted);font-weight:500}.menu a.active,.menu a:hover{color:var(--brand);text-decoration:none}
.toggle{display:none;background:none;border:1px solid var(--line);color:var(--fg);border-radius:6px;padding:6px 10px;cursor:pointer}
@media (max-width:640px){.toggle{display:block}.menu{display:none;position:absolute;top:60px;left:0;right:0;flex-direction:column;gap:0;background:var(--bg);border-bottom:1px solid var(--line)}.menu.open{display:flex}.menu li a{display:block;padding:12px 16px}}
.hero{padding:64px 0 40px;text-align:center}
.hero h1{font-size:clamp(1.8rem,5vw,2.8rem);margin:0 0 12px}
.hero p{color:var(--muted);max-width:600px;margin:0 auto 24px}
.btn{display:inline-block;background:var(--brand);color:#fff;padding:10px 20px;border-radius:8px;font-weight:600;border:0;cursor:pointer;font-size:1rem}
.btn:hover{text-decoration:none;opacity:.9}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;margin:24px 0 48px}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:20px}
.card h3{margin:6px 0 8px;font-size:1.1rem}.card h3 a{color:var(--fg)}
.meta{color:var(--muted);font-size:.85rem}
main{min-height:60vh}
.page{padding:40px 0 56px;max-width:720px}
.page h1{margin-top:0}
article img{max-width:100%;border-radius:8px}
.breadcrumb{font-size:.85rem;color:var(--muted);margin-bottom:12px}
form{display:grid;gap:14px;max-width:520px}
label{font-weight:600;font-size:.9rem}
input,textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--fg);font:inherit}
textarea{min-height:140px;resize:vertical}
.notice{padding:12px 14px;border-radius:8px;background:var(--card);border:1px solid var(--line);display:none}
footer{border-top:1px solid var(--line);padding:24px 0;color:var(--muted);font-size:.9rem}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}
footer a{color:var(--muted)}