@charset "UTF-8";
@import url('https://fonts.googleapis.com/css2?family=Roboto&display=swap');

*{
  margin: 0;
  padding: 0;
}

html{
  width: 100%;
  font-family: 'Roboto', sans-serif;
  font-weight: 500;
  font-size: 62.5%;
}

body{
  background-color: #09f;
  width: 100%;
  margin: 0 auto;
}

header{
  width: 100%;
  background-color: #0ef;
}

/*
h1::before{
  content: "【";
}

h1::after{
  content: "】";
}
*/

header h1{
  text-align: center;
  font-size: 4rem;
  line-height: 100px;
}

nav{
  width: 100%;
  height: auto;
}

nav ul{
  list-style-type: none;
}

nav ul li{
  width: 25%;
  float: left;
  line-height: 80px;
  background-color: #0ef;
  text-align: center;
  font-size: 3rem;
  overflow: hidden;
}

nav ul li:hover{
  background-color: #ff0;
}

.now{
  background-color: #af0;
}

main{
  width: 100%;
  height: auto;
  background-color: #069;
  overflow: hidden;
}

article{
  width: 75%;
  height: 100%;
  background-color: #099;  
  padding-top: 20px;
  padding-bottom: 20px;
  margin: 0 auto;
}

article section{
  width: 90%;
  font-size: 2.4rem;
  margin: 30px auto; 
  padding: 20px;
  background-color: #fff;
  box-shadow: inset 5px 5px 10px #000;
  border-radius: 20px;
}

article section p{
  margin: 10px;
  text-indent: 1em;
  line-height: 40px;
  text-align: justify;
}

article section ul{
  list-style-type: square;
  margin-left: 80px;
  font-size: 2.5rem;
}

article section li{
  line-height: 50px;
}

footer{
  width: 100%;
  height: auto;
  background-color: #aaa;
  font-size: 2rem;
}

footer .policy{
  line-height: 100px;
  text-decoration: underline;
  margin-left: 50px;
}

a{
  text-decoration: none;
  color: #00f;
  font-weight: 600;
}

a:hover{
  color: #f00;
}

strong{
  font-weight: 800;
  color: #f00;
}

summary{
  color: #fff;
  margin: 40px 80px;
  font-size: 2.5rem;
}

summary:hover{
  cursor: pointer;
  color: #f00;
}

@media screen and (max-width: 1000px){
  
  html{
    font-size: 32.5%;
  }

  header h1{
    line-height: 80px;
  }
  
  nav ul li{
    line-height: 50px;
  }
  
  article{
    width: 100%;
  }

  article section{
    width: 80%;
    margin: 20px auto; 
    padding: 20px 10px;
  }
  
  article section p{
    line-height: 24px;
  }

  article section ul{
    margin-left: 30px;
  }
  
  article section li{
    line-height: 30px;
  }
   
  footer{
    text-align: center;
  }

  footer .policy{
    line-height: 50px;
  }

  summary{
    margin: 20px 30px;
  }
  

}