:root{
  --ink:#0b1220; --muted:#5a6a85; --line:#e6ecf5; --accent:#2563eb; --accent2:#f97316; --bg:#ffffff;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.container{max-width:900px;margin:0 auto;padding:24px}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff;z-index:10}
.brand{font-weight:900}
.badge{border:1px solid var(--line);border-radius:999px;padding:6px 10px;color:var(--muted);margin-left:10px}
.btn{display:inline-flex;align-items:center;gap:10px;border:1px solid var(--line);background:var(--accent);color:#fff;font-weight:800;padding:10px 14px;border-radius:12px}
.btn.secondary{background:#fff;color:var(--ink)}
.block{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:0 8px 24px rgba(15,23,42,.06);margin:24px 0}
h1{font-size:clamp(34px,5vw,56px);line-height:1.05;margin:0 0 8px}
h2{font-size:clamp(22px,3vw,32px);margin:0 0 10px}
h3{font-size:20px;margin:0 0 8px}
.lead{color:#1e293b}
.tags{margin:10px 0}
.tag{display:inline-block;padding:6px 12px;border:1px solid var(--line);border-radius:999px;color:#334155;font-size:12px;margin-right:6px;background:#fff}
.quote{border-left:3px solid var(--accent2);padding:10px 14px;background:#fff3e9;border-radius:10px;color:#7a3b06;margin:12px 0 4px}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:860px){.grid{grid-template-columns:1fr}}
.card{border:1px solid var(--line);border-radius:16px;padding:16px;background:#fff;box-shadow:0 8px 24px rgba(15,23,42,.05)}
.muted{color:#5a6a85}
.footer{color:#5f6f8a;font-size:13px;margin:28px 0 16px;border-top:1px solid var(--line);padding-top:14px;display:flex;justify-content:space-between;flex-wrap:wrap}
.note{background:#f6faff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;color:#16355b;margin-top:8px}