:root {
  --btn-bg: #0f318d;
  --btn-bg-hover: #415fcc;
  --btn-bg-active: #1a4ae7;
  --btn-text: #ffffff;
}

body{
    background-color: #b9ffff;
    font-family: "ＭＳ 明朝", "MS Mincho", "游明朝", "YuMincho", "ヒラギノ明朝 ProN", "Hiragino Mincho ProN",serif;
}

.btn {
  width: 100px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  padding: .65em 1.1em;
  border: 0;
  border-radius: 10px;
  background: var(--btn-bg);
  color: var(--btn-text);
  font-weight: 600;
  font-size: 100%;
  font-family: "Yu Gothic", "Meiryo", "Noto Sans JP", "system-ui", "sans-serif", monospace;
  cursor: pointer;
  text-decoration: none;
  box-shadow:
    0 6px 14px rgba(0,0,0,.15),
    0 2px 4px rgba(0,0,0,.12);
  transition:
    background-color 120ms ease-out,
    box-shadow 120ms ease-out,
    transform 120ms ease-out;
}

.btn:hover {
  background: var(--btn-bg-hover);
  transform: translateY(-1px);
  box-shadow:
    0 10px 20px rgba(0,0,0,.18),
    0 4px 8px rgba(0,0,0,.14);
}

.btn:active {
  background: var(--btn-bg-active);
  transform: translateY(0);
  box-shadow:
    0 4px 10px rgba(0,0,0,.14),
    0 2px 4px rgba(0,0,0,.12);
}

.btn:focus-visible {
  outline: 3px solid #b7d1ff;
  outline-offset: 2px;
}

.secr{
  width: 740px;
  background-color:#eeeeee;
  margin-top : 20px;
  margin-left: 53px;
  padding: 20px;
}

.secr h2{
  font-weight: bold;
  border-bottom: 1px solid #999999;
  padding-bottom: 5px;
}

.secr .info{
  margin-bottom: 15px;
  font-weight: bold;
  color: #ff3333;
}

.secr .addr{
  margin: 5px 0px;
  font-weight: bold;
}

.secr .addr p{
  padding-left: 20px ;
  font-weight: normal;  
}

.secr div.officer{
  width: 400px;
  font-size: 90%;
  margin-left: auto;
}

.secr div.officer ul ol{
  font-weight: bold;
  padding-left: 0;
  padding-bottom: 5px;
}

.secr div.officer ul li{
  list-style-type: square;
  padding-bottom: 3px;
}

.site-header{
  background: url("../image/Y2.jpg") no-repeat center center;
  background-size: cover;
  text-indent: -9999px;
  overflow: hidden;
  display: block;
  width: 800px;
  height: 46px;
  margin-top : 83px;
  margin-left : 43px;
}

.hero{
  margin-top : 20px;
  margin-left : 43px;
}

.hero img{
  width: 800px;
  height: 204px;
}

section.join-member{
  width: 800px;
  margin-top : 13px;
  margin-left : 43px;
}

.join-member h2{
  font-weight: bold;
  border-bottom: 1px solid #999999;
  padding-bottom: 5px;
}


table.join-member{
  border-collapse: collapse ;
  border-spacing: 0;
}

.join-member thead tr th{
  border: 1px solid #999999;
  background-color: #00ccdd;
  padding: 5px;
}

.join-member tbody tr td{
  font-size: 80%;
  border: 1px solid #999999;
  padding: 5px;
}

.join-member tbody tr td.company{
  font-size: 100%;
  font-weight: bold;
}

td.np{
  white-space: nowrap;
}

.main-nav ul {
  display: flex;
  gap: 25px; 
  list-style: none;
  padding: 0;
  margin-top : 60px;
  margin-left : 53px;
}

.main-nav-new ul {
  display: flex;
  gap: 25px; 
  list-style: none;
  padding: 0;
  margin-top : 50px;
  margin-left : 53px;
}

.main-nav a {
  display: block;
  width: 135px;
  height: 40px;
  text-indent: -9999px;
  background-size: cover;
}

.main-nav a[href="./index.htm"] {
  background-image: url("../image/home.jpg");
}

.main-nav a[href="./meibo.htm"] {
  background-image: url("../image/meibo.jpg");
}

.main-nav a[href="./kenshu.htm"] {
  background-image: url("../image/kenshukai.jpg");
}

.main-nav a[href="./bousai.pdf"] {
  background-image: url("../image/bousai.jpg");
}

.main-nav a[href="./borantia.htm"] {
  background-image: url("../image/borantia.jpg");
}

.main-nav a[href="./gyoji.htm"] {
  background-image: url("../image/gyoji.jpg");
}

.about{
  width: 780px;
  margin-top : 60px;
  margin-left : 53px;
}

.about p{
  text-indent: 1em;
  line-height: 1.5;
}

.about p.director{
  text-align: right;
}

.about p.director span{
    font-size: 130%;
    font-weight: bold;
}

.attention{
    font-size: 80%;
}

.sup{
    vertical-align: super;
}

.site-footer{
    margin-top: 50px;
}