:root{
  --bg:#f7f8fc;
  --card:#ffffff;
  --text:#1f2937;
  --muted:#6b7280;
  --accent:#5b5bd6;
  --accent2:#7c3aed;
  --line:#e5e7eb;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
}
.wrap{max-width:960px;margin:0 auto;padding:28px 20px 56px}
header{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding:10px 0 28px;
}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--text)}
.logo{
  width:46px;height:46px;border-radius:13px;
  display:grid;place-items:center;color:#fff;font-weight:800;font-size:22px;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  box-shadow:0 8px 24px rgba(91,91,214,.22);
}
.brand b{font-size:22px}
nav{display:flex;gap:18px;flex-wrap:wrap}
nav a,.links a{color:var(--accent);text-decoration:none}
nav a:hover,.links a:hover{text-decoration:underline}
.hero{
  background:linear-gradient(135deg,#ffffff,#f1efff);
  border:1px solid var(--line);border-radius:24px;padding:44px;
  box-shadow:0 18px 50px rgba(31,41,55,.06)
}
h1{font-size:44px;line-height:1.1;margin:0 0 16px}
h2{font-size:28px;margin-top:36px}
h3{font-size:20px;margin-top:26px}
p{margin:12px 0}
.lead{font-size:20px;color:#4b5563;max-width:760px}
.badges{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.btn{
  display:inline-block;padding:12px 18px;border-radius:12px;
  text-decoration:none;font-weight:650;border:1px solid var(--line);
  background:#fff;color:var(--text)
}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:26px}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px}
.small{color:var(--muted);font-size:14px}
footer{border-top:1px solid var(--line);margin-top:42px;padding-top:22px;color:var(--muted);font-size:14px}
article{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:34px;
}
ul{padding-left:22px}
code{background:#f3f4f6;padding:2px 6px;border-radius:6px}
@media(max-width:700px){
  header{align-items:flex-start;flex-direction:column}
  .hero{padding:28px 22px}
  h1{font-size:36px}
  .grid{grid-template-columns:1fr}
}