:root{--primary:#151515;--primary-dark:#151515;--text:#151515;--text-light:#151515;--bg:#f9fafb;--bg-alt:#f3f4f6;--white:#fff}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,sans-serif;line-height:1.5}.container{margin:0 auto;max-width:1200px;padding:0 1.5rem;width:100%}.btn{background:var(--primary);border-radius:.5rem;color:var(--white);display:inline-block;font-weight:600;padding:.75rem 1.5rem;text-decoration:none;transition:background-color .3s}.btn:hover{background:var(--primary-dark)}.section{padding:3rem 0}@media (min-width:768px){.section{padding:3rem 0}}