html, body {
  margin: 0;
  padding: 0;
  background-color: #C8D6E0;
}

/* ===== ヘッダー全体を固定 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: #C8D6E0;
  z-index: 1000;
  box-sizing: border-box;
}

/* ===== ヘッダーの中身（ロゴ＋メニューボタン） ===== */
.header-inner {
  display: flex;
  justify-content: center; /* ロゴを中央に */
  align-items: center;
  height: 230px; /* ヘッダーの高さ */
  position: relative;
}



/* ===== 固定メニュー ===== */
.header__navi_01 {
  position: fixed;
  top: 0;
  left: 0;
  background: #ada59c;
  width: 40%;
  height: 100vh;
  transform: translateX(-100%);
  transition: transform 0.6s;
  z-index: 90;
}

.header__navi_01.active {
  transform: translateX(0);
}

.header__navi_01 ul {
  list-style: none;
  margin: 0;
  padding-top: 100px;
  text-align: center;
}

.header__navi_01 li {
  margin-bottom: 24px;
}

.header__navi_01 a {
  color: #fff;
  text-decoration: none;
  font-family: serif;
  font-size: 1.2rem;
}


/* ハンバーガーボタン */
.sp-menu-btn_01 {
  position: fixed; /* ←固定にして常に右上 */
  right: 20px;
  top: 20px;
  width: 56px;
  height: 56px;
  background: #ada59c;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  z-index: 1100;
}

.sp-menu-btn_01 .line {
  position: absolute;
  left: 13px;
  width: 30px;
  height: 2px;
  background: #fff;
  transition: .3s;
}

.sp-menu-btn_01 .line:nth-child(1) { top: 18px; }
.sp-menu-btn_01 .line:nth-child(2) { top: 26px; }
.sp-menu-btn_01 .line:nth-child(3) { top: 34px; }

.sp-menu-btn_01.active .line:nth-child(1) {
  top: 26px;
  transform: rotate(-45deg);
}
.sp-menu-btn_01.active .line:nth-child(2) {
  opacity: 0;
}
.sp-menu-btn_01.active .line:nth-child(3) {
  top: 26px;
  transform: rotate(45deg);
}

/* ハンバーガーメニュー展開 */
.header__navi_01 {
  position: fixed;
  top: 0;
  left: 0;
  width: 70%;
  max-width: 400px;
  height: 100vh;
  background: #ada59c;
  transform: translateX(-100%);
  transition: transform .4s ease;
  z-index: 1050;
}

.header__navi_01.active {
  transform: translateX(0);
}

.header__navi_01 ul {
  list-style: none;
  margin:0; padding: 120px 24px 24px;
  display: flex; flex-direction: column; gap:16px;
}

.header__navi_01  a {
  font-size: 1.2rem;
  color: #fff;
  text-decoration: none;
  font-size: 1.2rem;
  top: 20px;
}

.sp-menu-btn_01 span:nth-child(2) {
  top: 28px;
}

.sp-menu-btn_01 span:nth-child(3) {
  top: 36px;
}

/* メニューが開いているときのボタン */
.sp-menu-btn_01.active span:nth-child(1) {
  top: 28px;
  transform: rotate(-45deg);
}

.sp-menu-btn_01.active span:nth-child(2) {
  opacity: 0;
}

.sp-menu-btn_01.active span:nth-child(3) {
  top: 28px;
  transform: rotate(45deg);
}

.sp-menu-btn_01 span:nth-child(1) { top: 20px; }
.sp-menu-btn_01 span:nth-child(2) { top: 28px; }
.sp-menu-btn_01 span:nth-child(3) { top: 36px; }


.header-container_01 h1 {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 300px;
  font-weight: normal;
}


/* ===== ロゴ ===== */
.logo img {
  display: block;
  width: 200px;
  height: auto;
}

  


/* ===== メインビジュアル ===== */
.mainvisual {
  margin-top: 230px; /* ← 固定ヘッダーの高さと同じだけ下げる */
}

.mainvisual img {
  width: 100%;
  height: 600px;
  object-fit: cover;
}

/* スマホ時のロゴサイズ調整 */
@media screen and (max-width: 768px) {
  .logo img {
    width: 60vw;
    max-width: 200px;
  }
}

/* スマホ時のmainvisualサイズ調整 */
@media screen and (max-width:375px) {
.mainvisual img {
  width:100%;
  height: 50vh;}
}