:root{
  --bg:#ffffff;
  --card:#ffffff;
  --text:#0f172a;
  --muted:#475569;
  --accent:#2563eb;
  --border:rgba(15,23,42,0.12);
  --r:16px;
  --shadow:0 18px 60px rgba(2,6,23,.12);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6}
a{color:inherit;text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:0 22px}
header{position:sticky;top:0;background:rgba(255,255,255,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--border);z-index:50}
.nav{display:flex;align-items:center;justify-content:space-between;padding:16px 0}
.brand{font-weight:900;letter-spacing:.2px;font-size:1.15rem}
.brand span{color:var(--accent)}
.nav a{color:var(--muted);font-weight:600;font-size:.92rem}
.nav-links{display:flex;gap:18px;align-items:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:12px 18px;border-radius:999px;font-weight:800;font-size:.92rem}
.btn-primary{background:linear-gradient(135deg,var(--accent),#06b6d4);box-shadow:0 10px 28px rgba(37,99,235,.25)}
.btn-outline{border:1px solid var(--border);color:var(--text)}
main{padding:56px 0}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--shadow);padding:26px}
.h1{font-size:clamp(2rem,4.5vw,3rem);line-height:1.1;margin-bottom:10px;font-weight:950}
.lead{color:var(--muted);max-width:70ch;margin-bottom:18px}
.grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:start}
.kvs{display:grid;gap:12px}
.kv{padding:14px;border-radius:14px;border:1px solid var(--border);background:rgba(2,6,23,.02)}
.kv b{display:block;margin-bottom:2px}
footer{border-top:1px solid var(--border);padding:28px 0;color:var(--muted);font-size:.9rem}
@media(max-width:900px){.grid{grid-template-columns:1fr}.nav-links{display:none}}