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

body{
  font-family:Arial,sans-serif;
  background:#fff;
  color:#111;
}

/* =========================
   GLOBAL
========================= */

.container{
  width:100%;
  max-width:1200px;
  margin:auto;
  padding:0 20px;
}

/* =========================
   HEADER
========================= */

.header{
  display:flex;
  justify-content:space-between;
  align-items:center;

  width:100%;
  max-width:1200px;

  margin:auto;

  padding:20px;
}

.logo{
  font-size:24px;
  font-weight:700;
  text-decoration:none;
  color:#111;
}

nav{
  display:flex;
  gap:20px;
}

nav a{
  color:#555;
  text-decoration:none;
  font-size:15px;
}

nav a:hover{
  color:#111;
}

/* =========================
   HERO
========================= */

.hero{
  padding:60px 20px 40px;
  text-align:center;
}

.hero h1{
  font-size:72px;
  line-height:1.1;
  margin-bottom:30px;
}

.hero form{
  width:100%;
  max-width:850px;
  margin:auto;
}

.hero input{
  width:100%;

  padding:20px 24px;

  border:1px solid #ddd;

  border-radius:20px;

  font-size:18px;

  outline:none;
}

.hero input:focus{
  border-color:#111;
}

/* =========================
   GRID
========================= */

.grid{
  width:100%;
  max-width:1200px;

  margin:auto;

  padding:20px;

  display:grid;

  gap:24px;

  grid-template-columns:
  repeat(auto-fill,minmax(320px,1fr));
}

/* =========================
   CARD
========================= */

.card{
  display:block;

  padding:24px;

  border:1px solid #eee;

  border-radius:20px;

  text-decoration:none;

  color:inherit;

  transition:.2s;

  background:#fff;
}

.card:hover{
  transform:translateY(-4px);
  border-color:#ddd;
}

.card h2{
  font-size:32px;
  margin-bottom:12px;
}

.card p{
  color:#666;
  line-height:1.7;
}

/* =========================
   ARTICLE
========================= */

.article{
  width:100%;
  max-width:860px;

  margin:auto;

  padding:40px 20px;
}

.article h1{
  font-size:56px;
  line-height:1.1;
  margin-bottom:30px;
}

.article h2{
  margin-top:40px;
  margin-bottom:20px;
  font-size:32px;
}

.article p{
  font-size:18px;
  line-height:1.9;
  color:#444;
  margin-bottom:24px;
}

.article ul,
.article ol{
  margin-left:20px;
  margin-bottom:24px;
}

.article li{
  margin-bottom:12px;
  line-height:1.8;
}

.article img{
  width:100%;
  border-radius:20px;
  margin:30px 0;
}

.article a{
  color:#111;
}

/* =========================
   FOOTER
========================= */

.footer{
  margin-top:80px;
  padding:40px 20px;

  border-top:1px solid #eee;

  text-align:center;

  color:#777;
}

/* =========================
   MOBILE
========================= */

@media(max-width:768px){

  .header{
    padding:16px;
  }

  nav{
    gap:14px;
  }

  .hero{
    padding:40px 20px 30px;
  }

  .hero h1{
    font-size:42px;
  }

  .hero input{
    padding:18px;
    font-size:16px;
  }

  .grid{
    grid-template-columns:1fr;
    gap:18px;
  }

  .card h2{
    font-size:24px;
  }

  .article h1{
    font-size:38px;
  }

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

}