:root{--primary-color:#c33;--text-color:#333;--secondary-text-color:#7c706c;--bg-color:#fff;--section-bg:#f8f8f8;--header-height:90px;--container-width:1200px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{color:var(--text-color);background-color:var(--bg-color);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}ul{list-style:none}img{max-width:100%;height:auto}.container{max-width:var(--container-width);margin:0 auto;padding:0 20px}section{scroll-margin-top:var(--header-height);padding:80px 0}h1,h2,h3,h4{margin-bottom:20px}