:root{
  --violet:#4f46e5;
  --violet-dark:#4338ca;
  --ink:#111827;
  --muted:#6b7280;
  --bg:#ffffff;
  --soft:#f9fafb;
  --border:#e5e7eb;
  --radius:14px;
  --max:1100px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:'Segoe UI',system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;font-size:17px}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
a{color:var(--violet);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
h1,h2,h3,h4{line-height:1.25;color:var(--ink)}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand-mark{display:inline-grid;place-items:center;width:32px;height:32px;background:var(--violet);color:#fff;border-radius:9px;font-weight:800}
.main-nav{display:flex;gap:22px;align-items:center}
.main-nav a{color:#374151;font-weight:500;font-size:15px}
.main-nav a:hover{color:var(--violet);text-decoration:none}
.nav-toggle{display:none;background:none;border:0;font-size:24px;cursor:pointer;color:var(--ink)}

/* Hero */
.hero{background:linear-gradient(135deg,var(--violet),#7c3aed);color:#fff;padding:72px 0}
.hero h1{font-size:44px;margin:0 0 16px;color:#fff;max-width:780px}
.hero p{font-size:20px;opacity:.95;max-width:680px;margin:0 0 28px}
.btn{display:inline-block;background:#fff;color:var(--violet);font-weight:700;padding:13px 26px;border-radius:999px}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.6);margin-left:10px}

/* Sections */
section{padding:56px 0}
.section-title{font-size:30px;margin:0 0 8px;text-align:center}
.section-sub{text-align:center;color:var(--muted);margin:0 0 36px}

/* Category cards */
.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{display:block;background:var(--soft);border:1px solid var(--border);border-radius:var(--radius);padding:26px 22px;transition:.2s;color:var(--ink)}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(79,70,229,.12);text-decoration:none;border-color:var(--violet)}
.card .ico{font-size:30px;margin-bottom:12px}
.card h3{margin:0 0 8px;font-size:19px}
.card p{margin:0;color:var(--muted);font-size:15px}

/* Article cards (lists) */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:.2s}
.post-card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(0,0,0,.08);text-decoration:none}
.post-card .pc-body{padding:22px}
.post-card .pc-cat{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--violet)}
.post-card h3{margin:8px 0 10px;font-size:18px;color:var(--ink)}
.post-card p{margin:0;color:var(--muted);font-size:15px}

/* Article page */
.article{max-width:760px;margin:0 auto;padding:48px 20px}
.article .crumb{font-size:14px;color:var(--muted);margin-bottom:14px}
.article h1{font-size:38px;margin:0 0 18px}
.article .lead{font-size:20px;color:#374151;margin-bottom:8px}
.article h2{font-size:27px;margin:42px 0 14px;padding-top:8px}
.article h3{font-size:21px;margin:28px 0 10px}
.article p{margin:0 0 18px}
.article ul,.article ol{margin:0 0 18px;padding-left:24px}
.article li{margin-bottom:8px}
.article table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article th,.article td{border:1px solid var(--border);padding:11px 13px;text-align:left}
.article th{background:var(--soft);font-weight:700}
.article figure{margin:24px 0}

/* Ad zones */
.ad-zone{margin:30px 0;padding:14px;background:var(--soft);border:1px dashed var(--border);border-radius:10px;text-align:center}
.ad-label{display:block;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#9ca3af;margin-bottom:6px}

/* Affiliate box (kept) */
.afil,[style*="eef2ff"]{background:#eef2ff!important;border-radius:10px;padding:14px 18px!important}

/* CTA */
.cta{background:var(--ink);color:#fff;text-align:center;padding:64px 20px;border-radius:0}
.cta h2{color:#fff;font-size:30px;margin:0 0 12px}
.cta p{color:#d1d5db;max-width:560px;margin:0 auto 26px}

/* Footer */
.site-footer{background:var(--ink);color:#cbd5e1;margin-top:40px;padding-top:48px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px;padding-bottom:36px}
.footer-brand{color:#fff;font-size:20px;margin-bottom:12px}
.footer-tag{color:#9ca3af;font-size:15px;max-width:320px}
.site-footer h4{color:#fff;font-size:15px;margin:0 0 14px}
.site-footer a{display:block;color:#cbd5e1;font-size:14px;margin-bottom:8px}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid #374151;padding:18px 20px;text-align:center}
.footer-bottom p{font-size:13px;color:#9ca3af;margin:0}
.footer-bottom a{color:#9ca3af;display:inline}

/* Category page header */
.cat-head{background:var(--soft);border-bottom:1px solid var(--border);padding:48px 0;text-align:center}
.cat-head h1{font-size:36px;margin:0 0 8px}
.cat-head p{color:var(--muted);margin:0}

/* Responsive */
@media(max-width:900px){
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .post-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:680px){
  .hero h1{font-size:32px}.hero p{font-size:17px}
  .section-title{font-size:24px}
  .card-grid,.post-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .nav-toggle{display:block}
  .main-nav{position:fixed;inset:64px 0 auto 0;background:#fff;flex-direction:column;gap:0;padding:10px 0;border-bottom:1px solid var(--border);display:none}
  body.nav-open .main-nav{display:flex}
  .main-nav a{padding:12px 20px;width:100%}
  .btn-outline{margin-left:0;margin-top:10px}
}