body {
height: 100%;
 background: #ffffff;
   background-size: cover;               /* 全画面 */
background-attachment: fixed;
}


 /* 画面分割 */


.Fr {
    display: flex; /* Flexboxを有効にする */
    height: 100vh; /* ビューポートの高さ全体を使用する */
    width: 100%;
    text-align: center;
}

.leftbox {
    flex-grow: 0; /* 利用可能なスペースの2/10を占める */
    background-color: #ffffff;
  flex-shrink: 0; /* 縮小しない */
  width: 260px; /* 固定したい幅 */
    padding: 20px;
    box-sizing: border-box; /* paddingを幅に含める */
}

.rightbox {
    flex-grow: 1; /* 利用可能なスペースの8/10を占める */
    background-color: #ffffff;
overflow-y: scroll;
    padding: 20px;
    box-sizing: border-box;
}



}




@media screen and (max-width:600px) { 
	.split-box {
		position:relative;
		width:100%;
		height:auto;

	}
	}


/* ハンバーガー */
/* grid-styles.css */
.hamburger-grid {
  position: fixed;
  top: 30px;
  left: 30px;/* ドットの位置 */
  z-index: 1000;
  width: 50px;
  height: 50px;
  padding: 10px;
  border: none;
  background: transparent;
  cursor: pointer;
}

.hamburger-grid__dots {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  width: 100%;
  height: 100%;
}

.hamburger-grid__dot {
  width: 100%;
  height: 100%;
  background-color:  #adaaaa;/* ドットの色 */
  border-radius: 50%;
  transition: transform 0.3s ease, background-color 0.3s ease;
}

.hamburger-grid.active .hamburger-grid__dot {
  background-color: #fff;
}

.hamburger-grid.active .hamburger-grid__dot:nth-child(1) {
  transform: scale(0);
}
.hamburger-grid.active .hamburger-grid__dot:nth-child(2) {
  transform: translateY(8px);
}
.hamburger-grid.active .hamburger-grid__dot:nth-child(3) {
  transform: scale(0);
}
.hamburger-grid.active .hamburger-grid__dot:nth-child(4) {
  transform: translateX(8px);
}
.hamburger-grid.active .hamburger-grid__dot:nth-child(5) {
  transform: scale(1.2);
}
.hamburger-grid.active .hamburger-grid__dot:nth-child(6) {
  transform: translateX(-8px);
}
.hamburger-grid.active .hamburger-grid__dot:nth-child(7) {
  transform: scale(0);
}
.hamburger-grid.active .hamburger-grid__dot:nth-child(8) {
  transform: translateY(-8px);
}
.hamburger-grid.active .hamburger-grid__dot:nth-child(9) {
  transform: scale(0);
}

.nav-grid {
  position: fixed;
  top: 0;
  left: 0;
  width: 280px;/*メニューの横幅 */
  height: 100vh;
  background: linear-gradient(-225deg,#faf4f3  40%,#e3eeff 100%);/*メニューの背景色 */
  visibility: hidden;
  opacity: 0;
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 900;
}

.nav-grid.active {
  visibility: visible;
  opacity: 1;
}

.nav-grid__content {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
  max-width: 1200px;
  height: 100%;
  margin: 0 auto;
  padding: 100px 40px;
}

.nav-grid__sections {
  grid-column: span 12;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
}

.nav-grid__section {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-grid.active .nav-grid__section {
  opacity: 1;
  transform: translateY(0);
}

.nav-grid.active .nav-grid__section:nth-child(1) {
  transition-delay: 0.2s;
}
.nav-grid.active .nav-grid__section:nth-child(2) {
  transition-delay: 0.3s;
}

.nav-grid__title {
  margin: 0 0 20px;
  color: #666;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.nav-grid__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-grid__list li {
  margin-bottom: 15px;
  overflow: hidden;
}

.nav-grid__link {
  display: inline-block;
  color: #969292;/*メニュー文字リンク色 */
  font-size: 24px;
  text-decoration: none;
  transform: translateY(100%);
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              color 0.3s ease;
}

.nav-grid.active .nav-grid__link {
  transform: translateY(0);
}

.nav-grid__link:hover {
  color: #ffffff;/*メニュー文字ホバー色 */
}

@media (max-width: 768px) {
  .nav-grid__content {
    padding: 80px 20px;
  }
  
  .nav-grid__sections {
    grid-template-columns: 1fr;
  }
  
  .nav-grid__link {
    font-size: 20px;
  }
}