@charset "UTF-8";
/* CSS Document */
html {
  font-size: 62.5%; /* 16px * 62.5% = 10px */
  width: 100%;
  box-sizing: border-box;
}
body {
  color: #0D0D0D; /* RGB */
  font-family: 'Noto Sans JP', sans-serif, "游ゴシック体", YuGothic, "游ゴシック", "Yu Gothic", "メイリオ", sans-serif;
  font-weight: 500;
  font-size: 1.6em;
  line-height: 1.8;
  text-align: center;
  background-color: #F2F2F2;
}
section h2 {
  font-size: 3rem;
}
a:hover {
  opacity: 0.5;
}
a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3 {
  margin: 0;
  padding: 0;
}

ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-header {
  position: fixed;
  background-color: rgba(255, 255, 255, 0.9);
  padding: 5px 30px;
  border-bottom: 5px solid #0D0D0D;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
}
.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 2000px;
  width: 80%;
  margin: 0 auto;
}
.logo img {
  height: 40px;
  padding-top: 10px;
}
.navigation .nav-list {
  list-style: none;
  display: flex;
  gap: 30px;
  margin: 0;
  padding: 3px 0 0;
}
.navigation .nav-list li a {
  text-decoration: none;
  color: #0D0D0D;
  font-weight: bold;
  transition: color 0.3s ease;
}
.navigation .nav-list li a:hover {
  color: #05a6d8;
}
@media (max-width: 600px) {
	.site-header {
		padding: 0 30px;
	}
	.logo img {
		height: 30px;}
  .navigation .nav-list {
    gap: 5vw;
	 padding-top: 2px;
  }
  .navigation .nav-list li a {
    font-size: 3vw;
  }
  .header-container {
    width: 100%;
  }
}
footer {
  background-color: #0D0D0D;
  color: #F2F2F2;
  padding: 80px;
}
.pagetop {
  display: none;
  position: fixed;
  bottom: 30px;
  right: 15px;
}
.pagetop a {
  display: block;
  background-color: #F2F2F2;
  text-align: center;
  color: #0D0D0D;
  font-size: 1.8rem;
  text-decoration: none;
  padding: 5px 15px;
  filter: alpha(opacity=50);
  -moz-opacity: 0.5;
  opacity: 0.5;
  border-radius: 10px;
}
.pagetop a:hover {
  display: block;
  background-color: #05a6d8;
  text-align: center;
  color: #0D0D0D;
  font-size: 1.8rem;
  text-decoration: none;
  padding: 5px 15px;
  filter: alpha(opacity=50);
  -moz-opacity: 0.5;
  opacity: 0.5;
  border-radius: 10px;
}