*{
box-sizing:border-box;
}


body{

margin:0;

font-family:

Arial,Helvetica,sans-serif;

background:#f4f4f4;

color:#222;

}



.header{

background:#111;

color:white;

padding:25px 20px;

}



.logo{

font-size:28px;

font-weight:700;

}


.subtitle{

color:#ccc;

margin-top:8px;

}



.container{

max-width:720px;

margin:auto;

padding:15px;

}



.nav{

background:white;

padding:15px;

display:flex;

gap:25px;

}


.nav a{

text-decoration:none;

color:#111;

font-weight:bold;

}




.card{

background:white;

padding:20px;

border-radius:14px;

margin-bottom:18px;

}



.cover{

width:100%;

border-radius:12px;

}




.tag{

display:inline-block;

background:#eee;

padding:6px 12px;

border-radius:20px;

font-size:13px;

}



.title{

font-size:24px;

font-weight:bold;

line-height:1.4;

margin-top:12px;

}



.desc{

color:#555;

line-height:1.7;

}



.time{

font-size:13px;

color:#888;

}



.btn{

display:block;

background:#111;

color:white;

padding:15px;

border-radius:10px;

text-align:center;

text-decoration:none;

margin-top:18px;

}



.article h1{

font-size:30px;

}


.article p{

font-size:17px;

line-height:1.9;

}



.footer{

padding:30px;

text-align:center;

font-size:12px;

color:#888;

}