:root{--primary:#dc2626;--text:#333;--bg:#fff;--gray:#f5f5f5}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;line-height:1.6;color:var(--text);background:var(--bg)}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{margin-bottom:1rem}
.btn{display:inline-block;padding:12px 24px;background:var(--primary);color:#fff;border-radius:8px;text-decoration:none}
.btn:hover{opacity:0.9;text-decoration:none}
nav{padding:20px 0;border-bottom:1px solid #eee}
footer{padding:40px 0;background:var(--gray);margin-top:60px;text-align:center}
.hero{padding:80px 0;text-align:center}
.hero h1{font-size:3em;margin-bottom:20px}
.grid{display:grid;gap:25px}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.card{padding:25px;border:1px solid #eee;border-radius:12px}
@media(max-width:768px){.hero h1{font-size:2em}.container{padding:0 15px}}