.sub_header {
  width: 100%;
  height: 400px;
  background: #f4f4f4;
  position: relative;
  overflow: hidden;
  margin-bottom: calc(var(--section-margin) / 1.5);
}
.sub_header img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

/* スマホ用メインビジュアルの表示制御 */
.sub_header img.visual_pc {
  display: none;
}

.sub_header img.visual_sp {
  display: block;
}

.sub_header_menu {
  width: 100%;
}
.sub_header_menu ul {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin: 0 0 60px;
}
.sub_header_menu ul li {
  border-right: 1px solid #000;
  padding: 5px 20px;
}

.beginner_01_wrap {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  padding-bottom: var(--section-margin);
}

.beginner_01_wrap h2 {
  background-color: var(--brand-color);
  padding: 10px;
  margin: 0 0 60px;
  font-size: 2.4rem;
  text-align: center;
  color: #4a4343;
  width: 100%;
}

.beginner_01_wrap .box {
  width: 90%;
  display: flex;
  flex-direction: column-reverse;
  flex-wrap: wrap;
  margin: 0 5%;
}

.beginner_01_wrap .box .box_01 {
  width: 100%;
}
.beginner_01_wrap .box .box_02 {
  width: 100%;
  padding-left: 2%;
  margin-bottom: 30px;
}

.beginner_01_wrap .box .box_01 dl {
  width: 100%;
  margin: 0 10%;
  display: flex;
  flex-wrap: wrap;
  margin: 0 0 20px;
}
.beginner_01_wrap .box .box_01 dt {
  width: 20px;
  color: var(--sub-brand-color);
  font-size: 2.4rem;
}
.beginner_01_wrap .box .box_01 dd {
  width: calc(100% - 30px);
  line-height: 140%;
}

section#sub_reserve {
  background-color: var(--brand-color);
  padding: var(--section-margin) 0;
}

.sub_reserve_wrap ul {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  gap: 60px;
}
.sub_reserve_wrap ul li {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  flex-direction: column;
  align-items: center;
}

.sub_reserve_wrap ul li.sp_reverse {
  flex-direction: column-reverse;
}

.sub_reserve_wrap h3 {
  font-size: calc(var(--base-font-size) * 1.4);
  font-weight: 700;
  text-align: left;
  color: var(--sub-brand-color);
  margin: 0 0 30px;
  position: relative;
}

.sub_reserve_wrap ul li:nth-child(2n-1) .box_01 {
  width: 100%;
  position: relative;
  margin-bottom: 20px;
}
.sub_reserve_wrap ul li:nth-child(2n-1) .box_02 {
  width: 100%;
}

.sub_reserve_wrap ul li:nth-child(2n) .box_01 {
  width: 100%;
  position: relative;
  margin-bottom: 20px;
  order: 2;
}
.sub_reserve_wrap ul li:nth-child(2n) .box_02 {
  width: 100%;
  order: 1;
}

.sub_reserve_wrap ul li .number {
  font-size: 4.8rem;
  color: var(--sub-brand-color);
  position: absolute;
  left: 20px;
  top: -2.4rem;
  font-family: "Roboto", sans-serif;
  font-style: italic;
  font-weight: 300;
}
section#sub_payment {
  padding: var(--section-margin) 0;
}
.sub_payment_wrap {
  width: 80%;
  margin: 0 10%;
}

section#sub_cancel {
  background-color: var(--brand-color);
  padding: var(--section-margin) 0;
}
.sub_cancel_wrap {
  width: 80%;
  margin: 0 10%;
}

section#sub_qa {
  padding: var(--section-margin) 0;
}
.sub_qa_wrap {
  width: 80%;
  margin: 0 10%;
}

.answer {
  flex-direction: column;
}

section#sub_more {
  background-color: var(--brand-color);
  padding: var(--section-margin) 0;
}
.menu_wrap_wh {
  padding: var(--section-margin) 0;
}
.menu_wrap_gr {
  background-color: var(--brand-color);
  padding: var(--section-margin) 0;
}
.sub_menu_wrap {
  width: 100%;
}

h2.menu {
  margin-bottom: 60px;
}

.sub_menu_wrap h3 {
  width: 100%;
  background-color: #c0d3aa;
  font-size: 2.4rem;
  padding: 10px 0;
  text-align: center;
  border-left: 10px solid var(--sub-brand-color);
  border-right: 10px solid var(--sub-brand-color);
}
.sub_menu_wrap p {
  margin-bottom: 60px;
}

.price_menu dl {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  padding: 30px 20px;
  border-bottom: 1px dotted #676767;
}
.price_menu dl:last-child {
  margin-bottom: 60px;
}
.price_menu dl dd {
  width: 80%;
}
.price_menu dl dt {
  width: 20%;
  text-align: right;
}

.menu_announce {
  width: 100%;
  background: #f4f4f4;
  padding: 20px;
  margin: 30px 0;
  border: 1px dotted #676767;
}

.menu_thumb ul {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
}
.menu_thumb ul li {
  width: calc((100% - 40px) / 2);
}
.menu_thumb ul li img.thumb {
  width: 100%;
}
.menu_thumb ul li p {
  width: 100%;
  padding: 10px 0;
}

.blog_wrap {
  width: 100%;
}

/* 検索セクションのスタイル（スマートフォン） */
.search_section {
  margin-top: 30px;
  padding: 20px;
  background: #f8f8f8;
  border-radius: 8px;
  text-align: center;
}

.search_section h3 {
  font-size: 1.6rem;
  color: #333;
  margin: 0 0 15px 0;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--brand-color);
}

.search_section .my_searchform_wrap {
  width: 100%;
  margin: 0;
  justify-content: center;
}

.search_section .my_searchform {
  width: 100%;
  max-width: 100%;
  flex-direction: column;
  gap: 10px;
  padding: 15px;
  margin: 0 auto;
}

.search_section .my_searchform input[type="text"] {
  width: 100%;
  max-width: 100%;
  margin-right: 0;
  margin-bottom: 10px;
  font-size: 1.2rem;
  padding: 10px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
}

.search_section .my_searchform .btn {
  width: 100%;
  font-size: 1.2rem;
  padding: 10px 12px;
  border-radius: 4px;
}

.staff_wrap {
  width: 100%;
}

.staff_wrap img.staff {
  width: 100%;
}
.staff_wrap ul {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  gap: 60px;
}
.staff_wrap ul li {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

.staff_wrap ul li.sp_reverse {
  flex-direction: column-reverse;
}

.staff_wrap ul li .box_01 {
  width: 100%;
  text-align: center;
}
.staff_wrap ul li .box_01 img {
  height: 100%;
  object-fit: cover;
}
.staff_wrap ul li .box_02 {
  width: 100%;
  text-align: left;
  background: #fff;
  padding: 40px 30px;
}
.staff_wrap ul li:nth-child(2n) {
  flex-direction: column-reverse;
}
.staff_wrap ul li:nth-child(2n) .box_01 {
  order: 2;
}
.staff_wrap ul li:nth-child(2n) .box_02 {
  order: 1;
}
.staff_wrap ul li .box_02 h2 {
  width: 100%;
  font-size: 2.4rem;
  margin: 0 0 20px;
}
.staff_wrap ul li .box_02 h3 {
  width: 100%;
  font-size: 1.8rem;
  font-weight: 500;
  margin: 0 0 10px;
}
.staff_wrap table {
  width: 100%;
  border-collapse: collapse;
}
.staff_wrap table tr {
  border-bottom: 1px dotted #999;
}
.staff_wrap table td {
  border: none;
}
.staff_wrap table td:nth-child(1) {
  width: 30%;
  font-weight: 700;
  font-size: 1.2rem;
  padding: 10px;
  background-color: #f4f4f4;
}
.staff_wrap table td:nth-child(2) {
  width: 70%;
  font-weight: 500;
  padding: 10px 20px;
}
section#sub_voice {
  background-color: var(--brand-color);
  padding: calc(var(--section-margin) / 2) 0 var(--section-margin);
}

#posture h2.menu span {
  font-size: 20px;
}

h2.menu span {
  font-size: 20px;
}

/* ブログ記事ページのレイアウト（スマートフォン） */
.content_wrapper {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 20px;
}

.main_wrap {
  width: 100%;
}

.sidebar {
  width: 100%;
}

/* サイドバーのカテゴリー一覧（スマートフォン） */
.sidebar-categories {
  background: #f8f8f8;
  padding: 15px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.sidebar-categories h3 {
  font-size: 1.4rem;
  color: #333;
  margin: 0 0 12px 0;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--brand-color);
}

.sidebar-categories ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar-categories ul li {
  margin-bottom: 6px;
}

.sidebar-categories ul li a {
  display: block;
  padding: 6px 10px;
  color: #555;
  text-decoration: none;
  border-radius: 4px;
  transition: all 0.3s ease;
  font-size: 0.9rem;
}

.sidebar-categories ul li a:hover {
  background-color: var(--brand-color);
  color: #fff;
}

/* サイドバーの検索窓（スマートフォン） */
.sidebar-search {
  background: #f8f8f8;
  padding: 15px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.sidebar-search h3 {
  font-size: 1.4rem;
  color: #333;
  margin: 0 0 12px 0;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--brand-color);
}

.sidebar-search .my_searchform_wrap {
  width: 100%;
  margin: 0;
  justify-content: center;
}

.sidebar-search .my_searchform {
  width: 100%;
  max-width: 100%;
  flex-direction: column;
  gap: 8px;
  padding: 12px;
}

.sidebar-search .my_searchform input[type="text"] {
  width: 100%;
  max-width: 100%;
  margin-right: 0;
  margin-bottom: 8px;
  font-size: 1.2rem;
  padding: 6px 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
}

.sidebar-search .my_searchform .btn {
  width: 100%;
  font-size: 1.2rem;
  padding: 6px 10px;
  border-radius: 4px;
}

.online_train_text {
  font-size: 2rem;
  color: #23282d;
  font-weight: 700;
}