*{box-sizing:border-box}body{margin:0;font:16px Arial;color:#172033}nav{padding:20px 6%;display:flex;gap:20px;align-items:center;border-bottom:1px solid #eee}nav b{margin-right:auto;font-size:20px}.btn{background:#111827;color:#fff;padding:12px 18px;border-radius:9px;text-decoration:none}.hero{max-width:1100px;margin:12vh auto;padding:30px}.hero h1{font-size:clamp(42px,7vw,82px);line-height:1}.hero p{font-size:20px;line-height:1.6}.block{max-width:1100px;margin:auto;padding:80px 6%}.block h1{font-size:clamp(35px,6vw,70px)}