:root{--navy:#14304f;--ink:#1f2a36;--sub:#5d6b78;--line:#e3e8ee;--bg:#f5f7fa;--accent:#2a6db0}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:'Noto Sans JP',system-ui,sans-serif;line-height:1.8;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:880px;margin:0 auto;padding:0 20px}
header{background:var(--navy);color:#fff}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{font-weight:900;font-size:20px;letter-spacing:.04em;color:#fff}
.logo:hover{text-decoration:none}
header nav a{color:#cfe0f2;font-size:13px;margin-left:18px}
.hero{background:linear-gradient(180deg,var(--navy),#1f4670);color:#fff;padding:48px 0 52px}
.hero h1{font-size:26px;margin:0 0 10px;line-height:1.5}
.hero p{margin:0;opacity:.88;font-size:14px}
main{padding:36px 0 48px}
h2{font-size:18px;margin:0 0 16px;padding-left:10px;border-left:4px solid var(--navy)}
.sites{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-bottom:40px}
.site{display:block;background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;color:var(--ink);transition:box-shadow .15s}
.site:hover{text-decoration:none;box-shadow:0 4px 16px rgba(20,48,79,.12)}
.site .cat{display:inline-block;font-size:11px;font-weight:700;color:var(--navy);background:#e6eef6;border-radius:4px;padding:2px 8px}
.site h3{font-size:16px;margin:10px 0 6px}
.site p{font-size:13px;color:var(--sub);margin:0 0 10px}
.site .url{font-size:12px;color:var(--accent)}
.box{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px 24px;margin-bottom:28px;font-size:14px}
.box dl{margin:0;display:grid;grid-template-columns:120px 1fr;gap:8px 16px}
.box dt{color:var(--sub);font-weight:700}
.box dd{margin:0}
.doc h3{font-size:15px;margin:22px 0 6px}
.doc p,.doc li{font-size:14px}
footer{border-top:1px solid var(--line);background:#fff;padding:20px 0;font-size:12px;color:var(--sub)}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
@media(max-width:600px){.hero h1{font-size:21px}.box dl{grid-template-columns:1fr}header nav a{margin-left:12px}}