:root{
  --primary:#111827;
  --text:#111827;
  --muted:#E5E7EB;
  --soft:#F9FAFB;
  --white:#FFFFFF;
  --radius:14px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:#FFFFFF;color:var(--text);font-family:Arial,Helvetica,sans-serif}
a{color:var(--primary);text-decoration:none}
.container{width:min(1100px,92%);margin:0 auto}

header{border-bottom:1px solid var(--muted);background:#fff;position:sticky;top:0;z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.nav .brand{display:flex;align-items:center;gap:12px}
.nav .menu{display:flex;align-items:center;gap:18px}
.nav .menu a{font-weight:600}
.nav .menu a.btn{border:1px solid var(--primary);padding:8px 14px;border-radius:999px}
.nav-toggle{display:none;border:1px solid var(--muted);background:#fff;border-radius:10px;padding:8px 10px}

@media(max-width:860px){
  .nav .menu{display:none;position:absolute;top:64px;left:4%;right:4%;background:#fff;border:1px solid var(--muted);border-radius:12px;padding:12px;flex-direction:column}
  .nav .menu.open{display:flex}
  .nav-toggle{display:inline-flex;align-items:center;gap:8px;cursor:pointer}
}

main{padding:22px 0 40px}

.hero{display:grid;grid-template-columns:1.1fr 0.9fr;gap:22px;align-items:center;margin:10px 0 18px}
.hero .intro h1{font-size:clamp(28px,4vw,42px);line-height:1.15;margin:0 0 8px}
.hero .intro p{margin:0 0 10px;line-height:1.65}
.hero .actions{display:flex;gap:10px;margin-top:6px}
.hero .btn{border:1px solid var(--primary);padding:10px 14px;border-radius:10px;font-weight:700}
.hero .btn.secondary{border-color:var(--muted)}

@media(max-width:860px){
  .hero{grid-template-columns:1fr}
}

.hero-media img{width:100%;height:auto;border-radius:var(--radius)}

.section{padding:22px 0}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(max-width:900px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.grid-3,.grid-2{grid-template-columns:1fr}}

.card{border:1px solid var(--muted);border-radius:var(--radius);padding:16px;background:#fff}
.card h3{margin:0 0 6px}

.footer{border-top:1px solid var(--muted);padding:18px 0;margin-top:28px;font-size:14px;color:#4b5563}
.footer .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:700px){.footer .grid-3{grid-template-columns:1fr}}
.small{font-size:13px;color:#6b7280}
img.responsive{width:100%;height:auto;display:block}