*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

body{
  font-family: Arial, sans-serif;
  background:#f4f6f8;
  color:#222;
  line-height:1.6;
}

header{
  background:linear-gradient(135deg, #0f172a, #1e293b);
  color:white;
  text-align:center;
  padding:40px 20px;
  box-shadow:0 2px 10px rgba(0,0,0,0.15);
}

header h1{
  font-size:48px;
  margin-bottom:10px;
  font-weight:700;
}

header p{
  font-size:22px;
  color:#dbeafe;
}

.container{
  width:90%;
  max-width:1100px;
  margin:35px auto;
}

.article-card{
  background:white;
  padding:25px;
  margin-bottom:22px;
  border-radius:12px;
  box-shadow:0 4px 14px rgba(0,0,0,0.08);
  border-left:6px solid #2563eb;
  transition:transform 0.2s ease, box-shadow 0.2s ease;
}

.article-card:hover{
  transform:translateY(-3px);
  box-shadow:0 8px 18px rgba(0,0,0,0.12);
}

.article-card h2{
  margin-bottom:12px;
  font-size:34px;
  line-height:1.3;
}

.article-card h2 a{
  text-decoration:none;
  color:#1d4ed8;
}

.article-card h2 a:hover{
  color:#0f172a;
  text-decoration:underline;
}

.article-card p{
  font-size:21px;
  color:#555;
}

footer{
  background:#0f172a;
  color:white;
  text-align:center;
  padding:18px;
  margin-top:40px;
  font-size:18px;
}

@media (max-width: 768px){
  header{
    padding:30px 15px;
  }

  header h1{
    font-size:34px;
  }

  header p{
    font-size:18px;
  }

  .article-card{
    padding:18px;
  }

  .article-card h2{
    font-size:26px;
  }

  .article-card p{
    font-size:17px;
  }

  footer{
    font-size:16px;
  }
}