:root{--bg:#ffffff;--panel:#ffffff;--text:#0f172a;--muted:#475569;--border:rgba(15,23,42,.14);--link:#0b57d0;--accent:#6d28d9;--shadow:0 10px 30px rgba(2,6,23,.06)}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:radial-gradient(900px 600px at 15% 0%, rgba(109,40,217,.10), transparent 60%),radial-gradient(900px 600px at 85% 10%, rgba(11,87,208,.10), transparent 55%),var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans JP",sans-serif;line-height:1.75}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:980px;margin:0 auto;padding:28px 18px 40px}
.header{display:flex;gap:18px;align-items:flex-start;justify-content:space-between;margin:10px 0 20px}
.nav{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end}
.kicker{color:var(--muted);font-size:13px}
.h1{font-size:34px;letter-spacing:.2px;margin:6px 0 0}
.h2{font-size:18px;margin:0}
.lead{color:var(--muted);margin:8px 0 0;max-width:60ch}
.panel{background:rgba(255,255,255,.78);border:1px solid var(--border);border-radius:16px;padding:16px 16px;margin:14px 0;box-shadow:var(--shadow);backdrop-filter: blur(8px)}
.panel-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:10px}
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.card{display:block;border:1px solid var(--border);border-radius:14px;padding:14px;background:#fff;box-shadow:0 6px 20px rgba(2,6,23,.05)}
.card:hover{border-color:rgba(109,40,217,.28);text-decoration:none}
.card-title{font-weight:700;margin:0 0 6px}
.card-body{color:var(--muted);font-size:14px;margin-top:6px}
.meta{color:var(--muted);font-size:13px}
.list{margin:10px 0 0;padding-left:18px;color:var(--muted)}
.list-cards{display:flex;flex-direction:column;gap:10px}
.row{display:flex;align-items:baseline;justify-content:space-between;gap:12px;border:1px solid var(--border);border-radius:14px;padding:12px 14px;background:#fff;box-shadow:0 6px 20px rgba(2,6,23,.05)}
.row:hover{border-color:rgba(11,87,208,.28);text-decoration:none}
.row-title{font-weight:650}
.prose p{color:var(--muted)}
.prose h2{margin:18px 0 6px;font-size:16px}
.prose code{background:rgba(2,6,23,.04);padding:2px 6px;border-radius:8px;border:1px solid var(--border)}
.footer{margin-top:16px}
.muted{color:var(--muted)}
@media (max-width:860px){.cards{grid-template-columns:1fr}.header{flex-direction:column}.nav{justify-content:flex-start}}