/*paddingとかborderを幅や高さに含めて計算→レイアウトが崩れないようになる...はず*/
* {
  box-sizing: border-box;
}
html,

body {
   height: 100%;
   text-align: center;
  font-family: "Meiryo", "Hiragino Kaku Gothic ProN", "Noto Sans JP",
    "Yu Gothic UI", system-ui, sans-serif;
  line-height: 1.7;
  background: #fff;
  margin: 0;
}

/*コンテナ共通　左右の余白と中央寄せ*/
.container {
  max-width: 1500px;
  width: 100%;
  margin: 0 auto;
  padding: 0 16px;
}

.btn {
  display: inline-block;
  padding: 15px 20px;
  margin: 10px 8px;
  background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
  color: white;
  font-weight: 600;
  font-size: clamp(15px,2.5vw,30px);
  text-decoration: none;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(37, 117, 252, 0.4);
  transition: background 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
  cursor: pointer;
}

.btn:hover,
.btn:focus {
  background: linear-gradient(135deg, #2575fc 0%, #6a11cb 100%);
  box-shadow: 0 6px 12px rgba(37, 117, 252, 0.6);
  transform: translateY(-2px);
  outline: none;
}

.btn:active {
  transform: translateY(0);
  box-shadow: 0 3px 6px rgba(37, 117, 252, 0.4);
}

.centor-title{
  text-align: center;
  margin-top: 20px;
  margin-bottom: 20px;
}

/* ページ先頭の見出しは .navtitle をそのまま使う */
.page-header {
  margin: 16px 0 24px;
}

/*フッダー*/
.site-footer {
  
  margin: 40px auto;
  text-align: center;
  font-style: normal;
}

/*フッダーのなかの<a>タグ全部に適用←すごい*/
.site-footer a {
  color: blue;
}

.hr-top{
  padding-top: 300px;
}

@media(max-width:768px){
  .hr-top{
    padding-top: 100px;
  }
}

.btn-top{
  padding-top: 200px;
}

@media(max-width:768px){
  .btn-top{
    padding-top: 100px;
  }
}

.site-footer a:hover,
.site-footer a:focus-visivle {
  text-decoration: underline;
}
/*リンク*/
a {
  color: rgb(255, 255, 255);
}
a:hover {
  color: rgb(87, 1, 87);
}