:root{
  --bg:#f4f6f9; --ink:#0f1b2d; --muted:#54657a; --brand:#1d6fe0; --brand-d:#14meea;
  --line:#e1e7ef; --panel:#ffffff; --ok:#0a8f5b; --max:1000px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.65 "Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.narrow{max-width:740px}
header.site{background:var(--panel);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{font-weight:800;font-size:19px;letter-spacing:-.02em;color:var(--ink)}
.logo b{color:var(--brand)}
nav a{color:var(--muted);margin-left:24px;font-size:15px;font-weight:500}
nav a:hover{color:var(--ink);text-decoration:none}
.cta{background:var(--brand);color:#fff!important;padding:9px 16px;border-radius:8px}
.cta:hover{background:#155bbd;text-decoration:none}
.hero{background:linear-gradient(180deg,#fff, #f4f6f9);border-bottom:1px solid var(--line);padding:84px 0 64px}
.hero h1{font-size:clamp(30px,4.6vw,46px);line-height:1.12;letter-spacing:-.03em;margin:0 0 18px;max-width:740px}
.hero p{font-size:19px;color:var(--muted);max-width:600px;margin:0 0 26px}
.row{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;background:var(--brand);color:#fff;font-weight:600;padding:12px 22px;border-radius:9px}
.btn:hover{background:#155bbd;text-decoration:none}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
section.block{padding:56px 0}
section.block h2{font-size:28px;letter-spacing:-.02em;margin:0 0 28px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:24px}
.card h3{margin:0 0 8px;font-size:17px}
.card h3 a{color:var(--ink)}
.card p{margin:0;color:var(--muted);font-size:15px}
.card .ic{width:38px;height:38px;border-radius:9px;background:#e8f0fc;color:var(--brand);display:flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:14px}
article.post{padding:52px 0 64px}
article.post h1{font-size:clamp(28px,4vw,40px);letter-spacing:-.02em;line-height:1.15;margin:0 0 10px}
article.post .byline{color:var(--muted);font-size:14px;border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:30px}
article.post h2{font-size:23px;letter-spacing:-.01em;margin:34px 0 12px}
article.post p{margin:0 0 18px}
article.post ul{padding-left:22px}article.post li{margin:8px 0}
.note{background:#eaf2fd;border:1px solid #cfe0fa;border-radius:12px;padding:20px 22px;margin:26px 0}
.note strong{color:var(--ink)}
footer.site{background:#0f1b2d;color:#aeb9c7;font-size:14px;padding:40px 0;margin-top:30px}
footer.site .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px}
footer.site a{color:#cdd7e3}