:root{
  --brand:#1f6feb; --brand-dark:#1a5fd0; --ink:#1a1f2b; --muted:#69707d;
  --line:#e7eaf0; --bg:#f6f8fb; --card:#fff; --radius:14px; --maxw:1140px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Malgun Gothic","Apple SD Gothic Neo",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.inner{max-width:var(--maxw);margin:0 auto;padding:0 18px}
.inner--narrow{max-width:760px}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.site-header .inner{display:flex;align-items:center;gap:16px;height:60px}
.logo{font-weight:900;font-size:22px;letter-spacing:-.5px;color:var(--ink)}
.logo span{color:var(--brand)}
.site-nav{margin-left:auto}
.site-nav ul{display:flex;gap:4px;list-style:none}
.site-nav a{display:block;padding:8px 12px;border-radius:8px;font-weight:600;font-size:15px;color:#3a4150}
.site-nav a:hover{background:var(--bg);color:var(--brand)}
.nav-toggle{display:none;margin-left:auto;width:40px;height:40px;background:none;border:0;cursor:pointer;flex-direction:column;justify-content:center;gap:5px}
.nav-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:.2s}

/* Main */
.site-main{padding:26px 0 40px;min-height:60vh}
.block{margin:34px 0}
.block:first-child{margin-top:8px}
.block-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--ink)}
.block-head h1,.block-head h2{font-size:20px;font-weight:800;letter-spacing:-.3px}
.block-head--page{border-bottom-width:2px}
.block-head--page h1{font-size:26px}
.block-head .more{font-size:14px;color:var(--muted);font-weight:600}
.block-head .more:hover{color:var(--brand)}

/* Card grid */
.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card-grid--compact{grid-template-columns:repeat(4,1fr);gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(20,30,60,.08)}
.card>a{display:flex;flex-direction:column;height:100%}
.card-thumb{display:block;aspect-ratio:16/10;background:#eef1f6;overflow:hidden}
.card-thumb img{width:100%;height:100%;object-fit:cover}
.card-thumb--empty{display:flex;align-items:center;justify-content:center;color:#9aa3b2;font-weight:800;font-size:15px;
  background:linear-gradient(135deg,#eef2f8,#e3e9f3)}
.card-body{display:flex;flex-direction:column;gap:6px;padding:13px 14px 15px}
.card-cat{font-size:12px;font-weight:700;color:var(--brand)}
.card-title{font-size:15.5px;font-weight:700;line-height:1.4;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-desc{font-size:13px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-date{font-size:12px;color:#9aa3b2;margin-top:auto}

/* Breadcrumb */
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:14px;display:flex;gap:7px;align-items:center;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--brand)}

/* Post */
.post{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px 30px 34px;margin-bottom:30px}
.post-title{font-size:29px;font-weight:800;line-height:1.35;letter-spacing:-.5px;margin-bottom:14px}
.post-meta{display:flex;gap:12px;align-items:center;flex-wrap:wrap;font-size:13px;color:var(--muted);
  padding-bottom:18px;margin-bottom:22px;border-bottom:1px solid var(--line)}
.post-cat{color:var(--brand);font-weight:700}
.post-hero{margin:0 0 22px;border-radius:10px;overflow:hidden}
.post-body{font-size:16.5px;line-height:1.85;color:#242a36;word-break:keep-all}
.post-body p{margin:0 0 18px}
.post-body h2{font-size:22px;font-weight:800;margin:32px 0 12px}
.post-body h3{font-size:18.5px;font-weight:700;margin:26px 0 10px}
.post-body ul,.post-body ol{margin:0 0 18px;padding-left:22px}
.post-body li{margin:6px 0}
.post-body img{border-radius:10px;margin:18px 0}
.post-body a{color:var(--brand);text-decoration:underline}
.post-body table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px}
.post-body th,.post-body td{border:1px solid var(--line);padding:9px 12px;text-align:left}
.post-body blockquote{border-left:3px solid var(--brand);padding:6px 16px;color:var(--muted);margin:18px 0;background:var(--bg)}
.post-body figure.chart{margin:22px 0;padding:18px 16px 12px;background:#fbfcfe;border:1px solid var(--line);border-radius:12px;text-align:center}
.post-body figure.chart svg{max-width:100%;height:auto}
.post-body figure.chart figcaption{font-size:13px;color:var(--muted);margin-top:8px}
.post-body .data-table-wrap{overflow-x:auto;margin:18px 0}
.post-body .keyfacts{background:#f2f7ff;border:1px solid #d3e3ff;border-radius:12px;padding:14px 18px;margin:18px 0}
.post-body .keyfacts li{margin:5px 0}
.post-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:26px}
.tag{font-size:13px;color:var(--muted);background:var(--bg);border:1px solid var(--line);padding:4px 10px;border-radius:999px}

/* Pagination */
.pagination{display:flex;gap:6px;justify-content:center;flex-wrap:wrap;margin:30px 0}
.pagination .page{min-width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;padding:0 12px;
  border:1px solid var(--line);border-radius:8px;background:#fff;font-size:14px;font-weight:600;color:#3a4150}
.pagination a.page:hover{border-color:var(--brand);color:var(--brand)}
.pagination .page.active{background:var(--brand);border-color:var(--brand);color:#fff}
.pagination .dots{border:0;background:none}

/* Ad slots */
.ad-slot{margin:22px 0}
.ad-placeholder{display:flex;align-items:center;justify-content:center;min-height:90px;border:1px dashed #c7cfdb;border-radius:10px;
  color:#a2abbb;font-size:13px;background:repeating-linear-gradient(45deg,#f2f5fa,#f2f5fa 10px,#eef2f8 10px,#eef2f8 20px)}

/* misc */
.empty{grid-column:1/-1;color:var(--muted);padding:30px 0;text-align:center}
.notfound{text-align:center;padding:70px 0}
.notfound h1{font-size:64px;font-weight:900;color:var(--brand)}
.notfound p{color:var(--muted);margin:8px 0 22px}
.btn{display:inline-block;background:var(--brand);color:#fff;padding:11px 22px;border-radius:9px;font-weight:700}
.btn:hover{background:var(--brand-dark)}

/* Footer */
.site-footer{background:#161b26;color:#c4ccdb;margin-top:40px;padding:34px 0}
.foot-brand{font-weight:900;font-size:20px;color:#fff;margin-bottom:12px}
.foot-brand span{color:var(--brand)}
.foot-nav{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:16px}
.foot-nav a{font-size:14px;color:#9aa6ba}
.foot-nav a:hover{color:#fff}
.foot-copy{font-size:13px;color:#69748a}

/* Responsive */
@media(max-width:900px){
  .card-grid,.card-grid--compact{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:640px){
  .nav-toggle{display:flex}
  .site-nav{position:fixed;inset:60px 0 auto 0;background:#fff;border-bottom:1px solid var(--line);
    transform:translateY(-120%);transition:transform .25s;box-shadow:0 12px 24px rgba(0,0,0,.08)}
  body.nav-open .site-nav{transform:translateY(0)}
  .site-nav ul{flex-direction:column;padding:8px}
  .site-nav a{padding:12px}
  .post{padding:22px 18px}
  .post-title{font-size:24px}
  .post-body{font-size:16px}
  .block-head--page h1{font-size:22px}
}
@media(max-width:420px){
  .card-grid,.card-grid--compact{grid-template-columns:1fr}
}