:root{
  --bg:#ffffff;
  --card:#ffffff;
  --text:#0f172a;
  --muted:#475569;
  --link:#0b5cff;
  --border:rgba(15,23,42,.12);
  --max: 1040px;
  --shadow: 0 10px 30px rgba(2,6,23,.08);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  background: var(--bg);
  color:var(--text);
  line-height:1.7;
}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:var(--max);margin:0 auto;padding:22px}
.header{
  position:sticky;top:0;
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--border);
  z-index:10;
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.2px}
.brand span:first-child{font-size:16px}
.badge{font-size:12px;padding:2px 8px;border:1px solid var(--border);border-radius:999px;color:var(--muted)}
.menu{display:flex;gap:12px;flex-wrap:wrap}
.menu a{padding:8px 10px;border-radius:10px;color:var(--text)}
.menu a:hover{background:rgba(2,6,23,.05);text-decoration:none}

.hero{padding:22px 0 8px}
.hero h1{font-size:38px;line-height:1.15;margin:0 0 10px}
.hero p{margin:0;color:var(--muted);max-width:78ch}

.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:14px;margin:18px 0 26px}
.card{grid-column:span 12;background:var(--card);border:1px solid var(--border);border-radius:16px;padding:16px;box-shadow: var(--shadow)}
.card h2{margin:0 0 6px;font-size:18px}
.card p{margin:0;color:var(--muted)}
@media (min-width: 860px){
  .card.span6{grid-column:span 6}
  .card.span4{grid-column:span 4}
}

.kicker{color:var(--muted);font-size:13px}
.section-title{display:flex;align-items:baseline;justify-content:space-between;gap:10px}
.section-title h2{margin:0;font-size:20px}
.section-title a{font-size:14px}

.post-list{display:grid;grid-template-columns:1fr;gap:12px;margin-top:10px}
.post{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:14px;box-shadow: var(--shadow)}
.post .meta{font-size:13px;color:var(--muted)}
.post h3{margin:6px 0 6px;font-size:18px}
.post p{margin:0;color:var(--muted)}

.content{max-width:78ch}
.content h1{line-height:1.15}
.content h2{margin-top:22px}
.content ul,.content ol{padding-left:20px}
.content li{margin:6px 0}
.content table{width:100%;border-collapse:collapse;margin:14px 0;background:#fff}
.content th,.content td{border:1px solid var(--border);padding:10px;text-align:left;vertical-align:top}
.content th{background:rgba(2,6,23,.03)}

.hr{height:1px;background:var(--border);margin:20px 0}
.footer{border-top:1px solid var(--border);padding:18px 0;color:var(--muted);font-size:13px}
.footer a{color:var(--muted)}

.notice{font-size:13px;color:var(--muted);border:1px dashed var(--border);padding:12px;border-radius:14px;background:rgba(2,6,23,.02)}
.callout{font-size:14px;border:1px solid var(--border);padding:12px;border-radius:14px;background:#fff;box-shadow: var(--shadow)}
.byline{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:13px;color:var(--muted);margin:10px 0 14px}
.byline strong{color:var(--text)}
.tag{display:inline-block;font-size:12px;padding:2px 8px;border:1px solid var(--border);border-radius:999px;background:rgba(2,6,23,.02)}

.btn{display:inline-block;padding:10px 12px;border:1px solid var(--border);border-radius:12px;background:#fff;color:var(--text);box-shadow: var(--shadow)}
.btn:hover{text-decoration:none;background:rgba(2,6,23,.03)}
.small{font-size:13px;color:var(--muted)}