/* ========== Reset & base ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }

body{
  font-family: "游ゴシック体", YuGothic, "游ゴシック", "Yu Gothic",
               "メイリオ", "Hiragino Kaku Gothic ProN", "Hiragino Sans", sans-serif;
  height: 90dvh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  color: #212121;
  background: #fff;
}

/* ========== Header ========== */
#header2{
  background:#000;
  color:#fff;
  font-size:18px;
  padding:10px;
  text-align:center;
}
#header2 .rogo{ /* HTMLは<p class="rogo">なのでここでスタイル */
  white-space: pre-line; /* nl2brの改行を綺麗に反映 */
  line-height: 1.6;
}

/* ========== Layout ========== */
#container{
  flex: 1;
  display: flex;
  justify-content: center;   /* 横中央 */
  align-items: center;       /* 縦中央 */
  padding: 16px;
}
.wrap {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}
/* ========== Main button ========== */
#button {
    font-size: 16px;
    text-align: center;
    color: #fff;
    border-radius: 60px;
    height: 80px;
    outline: 0;
    margin: 0 auto;
    margin-bottom: 50px;
    line-height: 80px;
    vertical-align: middle !important;
    border: none;
    width: 270px;
}
#button {
  background-color: #e54b4b;
}
#button a {
  text-decoration: none;
}
#button:hover {
  background-color: #16528e;
  text-decoration: none;
  color: #FFFFFF;
}


/* hoverはマウス環境のみ */
@media (hover:hover){
  input#button:hover{
    filter: brightness(0.96);
  }
}

/* タップ時（スマホ） */
input#button:active{
  filter: brightness(0.9);
}

/* アクセシビリティ（キーボード操作） */
input#button:focus-visible{
  outline: 3px solid #99c2ff;
  outline-offset: 2px;
}


@media screen and (min-width:500px) {
#button {
   width: 500px;
   font-size: 20px;
 }
 }