:root {
  --wide-width: 1430px;
  --thin-width: 1430px;
}

html {
  margin-top: 0px !important;
}

.br-pc {
  display: none;
}

.br-sp {
  display: none;
}

body,
html {
  margin: 0;
  padding: 0;
  width: 100%;
}

.icon {
  margin-right: 8px;
  font-size: 18px;
}

h1 {
  font-size: 4vw;
  color: #fff;
  margin-bottom: 40px;
  text-align: left;
}

/* --- ボタン共通 --- */
.web {
  background-color: #fff;
  color: #68b4b3;
  border: 1px solid transparent;
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
  transition:
    background-color 0.3s ease,
    color 0.3s ease,
    border-color 0.3s ease;
  text-decoration: none;
}

/* ホバー時に色反転 */
.web:hover {
  background-color: #fff;
  color: #68b4b3;
  border: 1px solid #96d0c0;
}

.recruit {
  font-size: 1vw !important;
  width: 12% !important;
}

/* --- header --- */
.header {
  position: absolute;
  top: 30px;
  left: 30px;
}

#header .logo-box {
  display: block;
  z-index: 1000;
}

.logo {
  font-size: 24px;
}

.logo-sp {
  display: none;
}

.logo-pc {
  display: block;
}

/* --mobile-nav-*: ハンバーガーボタンとモバイルメニューで共通の配色・動き。文字とアイコンは白背景に対して 4.5:1 以上 */
.site-header {
  --mobile-nav-text: #3e4545;
  --mobile-nav-accent: #23646a;
  --mobile-nav-accent-soft: #e6f4f4;
  --mobile-nav-bg: #f2f9f9;
  --mobile-nav-surface: #fff;
  --mobile-nav-border: #dcebeb;
  --mobile-nav-radius: 16px;
  --mobile-nav-duration: 0.2s;
  position: relative;
  left: 0;
  z-index: 10;
  max-width: -webkit-fill-available;
  width: 100%;
}

.logo-box {
  width: 160px;
  height: auto;
  position: absolute;
}

.site-logo {
  width: 100%;
  height: auto;
}

/* --- Navigation --- */
.nav-links {
  background: #fff;
  padding: 0;
  position: relative;
  border-bottom: 1px solid #59c3c5;
}

/* 項目間の余白は gap で管理し、PC幅ではメニューを1行に収める
   （文字を拡大したときだけ折り返して、はみ出しを防ぐ） */
.nav-links ul {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0 clamp(2px, 0.4vw, 8px);
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: stretch;
  position: relative;
}

.nav-links li {
  margin: 0;
  padding: 0;
  color: #646868;
}

/* トップページ用CSS（front-page.css / main-logo.css）の li の左右 margin と
   baseline 揃えを打ち消し、項目幅を padding と gap だけで決める */
.site-header .nav-links > .global-nav {
  align-items: stretch;
}

.site-header .nav-links > .global-nav > li {
  margin-inline: 0;
}

.nav-links > .global-nav > li > a,
.nav-links__label,
.header-submenu-toggle {
  display: flex;
  align-items: center;
  min-height: 54px;
  padding: 0 clamp(6px, 0.7vw, 12px);
  text-decoration: none;
  color: #646868;
  font-size: clamp(0.875rem, 0.55rem + 0.6vw, 1.0625rem);
  line-height: 1.4;
  white-space: nowrap;
  transition: color 0.3s ease;
}

.header-submenu-toggle {
  border: 0;
  border-bottom: 3px solid transparent;
  background: transparent;
  font-family: inherit;
  font-weight: inherit;
  cursor: pointer;
}

.nav-links > .global-nav > li > a:hover,
.header-submenu-toggle:hover {
  color: #007f85;
}

.header-submenu-toggle[aria-expanded="true"] {
  color: #007f85;
  background: #edfafa;
  border-bottom-color: #00a3a9;
  transition:
    background-color 0.3s ease,
    color 0.3s ease,
    border-color 0.3s ease;
}

.header-submenu-toggle:focus-visible,
.header-organ-item:focus-visible {
  outline: 3px solid #007f85;
  outline-offset: 3px;
}

/* --- PC mega menu --- */
.header-mega-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  z-index: 100;
  width: min(920px, calc(100% - 48px));
  padding: 16px 28px 18px;
  background: rgba(255, 255, 255, 0.98);
  border-radius: 0 0 12px 12px;
  box-shadow: 0 8px 22px rgba(19, 104, 108, 0.16);
  transform: translateX(-50%);
}

.header-mega-menu.is-open {
  display: block;
}

.header-mega-menu__section {
  min-width: 0;
  padding: 0;
}

.header-mega-menu__heading {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.header-mega-menu__heading img {
  width: 46px;
  height: 46px;
  object-fit: contain;
}

.header-mega-menu__heading h2 {
  margin: 0 0 3px;
  color: #007f85;
  font-size: 23px;
  line-height: 1.3;
}

.header-mega-menu__heading p {
  margin: 0;
  color: #5d6565;
  font-size: 12px;
  line-height: 1.4;
}

/* 当院についてのメニューは、ナビ全体ではなく「当院について」の真下に出す */
.header-about-item {
  position: relative;
}

.header-about-menu {
  width: min(360px, calc(100vw - 48px));
}

.header-about-menu__title {
  margin: 0 0 12px;
  color: #007f85;
  font-size: 1.25rem;
  line-height: 1.4;
}

.header-about-links {
  display: grid;
  gap: 8px;
}

.header-about-links a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 48px;
  padding: 8px 14px;
  border: 1px solid #b9e2e3;
  border-radius: 8px;
  color: #23646a;
  background: #fff;
  text-decoration: none;
}

.header-about-links a:hover {
  color: #006f74;
  background: #edfafa;
}

.header-about-links a:focus-visible {
  outline: 3px solid #007f85;
  outline-offset: 3px;
}

.header-organ-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.header-organ-item {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  min-height: 56px;
  padding: 7px 10px;
  color: #23646a;
  background: #fff;
  border: 1px solid #b9e2e3;
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.35;
  text-decoration: none;
  transition: color 0.2s ease;
}

.header-organ-item:hover {
  color: #006f74;
}

.header-organ-item img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

/* 矢印は項目名の直後に並べる（トップページ用CSSの .header-organ-item span より優先させる） */
.header-organ-item .header-organ-item__arrow {
  display: inline;
  margin-left: 4px;
  color: #008f95;
}

.global-nav li {
  display: inline-block;
  color: #646868;
  cursor: pointer;
  transition: color 0.1s ease;
  font-size: 0.8vw;
}

.global-nav li:hover::after {
  width: 100%;
}

/* --- PCナビゲーションリンク --- */
.nav-links-pc {
  display: flex;
}

.mobile-nav-sp {
  display: none;
}

/* ---END header --- */

@media screen and (max-width: 1023px) {
  .br-pc {
    display: block !important;
  }

  .br-sp {
    display: block !important;
  }
  #header .logo-box {
    display: block;
    height: auto;
  }

  .site-logo {
    width: 100%;
    height: inherit;
  }

  .logo-sp {
    display: block;
  }

  .logo-pc {
    display: none;
  }

  .nav-links {
    display: none;
  }

  .mobile-nav-sp {
    display: block;
    width: -webkit-fill-available;
    height: 100%;
    background: linear-gradient(180deg, var(--mobile-nav-surface) 0, var(--mobile-nav-bg) 240px);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition:
      opacity 0.3s ease,
      visibility 0.3s ease,
      transform 0.3s ease;
  }

  .mobile-nav-sp.active {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  /* 閉じている間は高さを0にする。画面全体を覆う固定要素が残っていると、
     iOS Safari で画面下に固定した電話バーが下端から浮く不具合が起きる。
     高さは閉じるフェードが終わってから0にする */
  .mobile-nav-sp:not(.active) {
    height: 0;
    transition:
      opacity 0.3s ease,
      visibility 0.3s ease,
      transform 0.3s ease,
      height 0s 0.3s;
  }

  /* 下端は固定の電話バーに隠れないだけの余白を取る */
  .mobile-nav-inner-sp {
    padding: 24px 36px 120px;
  }

  .mobile-navin-logo {
    width: 100%;
    padding: 16px;
    box-sizing: border-box;
    background: var(--mobile-nav-surface);
    border-bottom: 1px solid var(--mobile-nav-border);
  }

  /* ヒーロー上のロゴと同じ位置・大きさにそろえる */
  .mobile-nav-logo-sp {
    width: clamp(200px, 58vw, 260px);
  }

  /* ロゴ画像は文字が白のため、白背景のメニューでは閉じるボタンと同じグレーで表示する */
  .mobile-nav-logo-sp .site-logo {
    height: auto;
    filter: brightness(0) invert(40%);
  }

  .mobile-nav-menu-sp {
    list-style: none;
    padding: 0;
    margin: 0;
    background: var(--mobile-nav-surface);
    border: 1px solid var(--mobile-nav-border);
    border-radius: var(--mobile-nav-radius);
    box-shadow: 0 12px 32px rgba(35, 100, 106, 0.08);
    overflow: hidden;
  }

  .menu-section-sp + .menu-section-sp {
    border-top: 1px solid var(--mobile-nav-border);
  }

  /* 開閉する見出しと、開閉せずページへ移動する項目を同じ見た目にそろえる */
  .accordion-header-sp {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
    min-height: 64px;
    box-sizing: border-box;
    padding: 12px 20px 12px 24px;
    border: 0;
    background: transparent;
    color: var(--mobile-nav-text);
    font-size: 1.25rem;
    letter-spacing: 0.08em;
    line-height: 1.5;
    text-align: left;
    text-decoration: none;
    transition:
      background-color var(--mobile-nav-duration) ease,
      color var(--mobile-nav-duration) ease;
  }

  .accordion-header-sp:hover {
    background: var(--mobile-nav-bg);
  }

  .accordion-header-sp[aria-expanded="true"] {
    color: var(--mobile-nav-accent);
    background: var(--mobile-nav-accent-soft);
  }

  /* 角丸のメニュー内で切れないよう、フォーカス枠は内側に描く */
  .accordion-header-sp:focus-visible,
  .mobile-about-links a:focus-visible,
  .organ-item-sp:focus-visible {
    outline: 3px solid #005fcc;
    outline-offset: -3px;
  }

  /* ページへ移動するリンクの右向き矢印 */
  .menu-link-sp::after,
  .mobile-about-links a::after {
    content: "";
    flex-shrink: 0;
    width: 8px;
    height: 8px;
    margin-right: 10px;
    border-top: 2px solid var(--mobile-nav-accent);
    border-right: 2px solid var(--mobile-nav-accent);
    transform: rotate(45deg);
  }

  /* ＋／－アイコン。縦線を回転させて横線に重ねると－になる */
  .accordion-icon-sp {
    display: grid;
    place-items: center;
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    box-sizing: border-box;
    border: 1px solid var(--mobile-nav-accent);
    border-radius: 50%;
    transition: background-color var(--mobile-nav-duration) ease;
  }

  .accordion-icon-sp .line-sp {
    grid-area: 1 / 1;
    width: 12px;
    height: 2px;
    background-color: var(--mobile-nav-accent);
    border-radius: 1px;
    transition:
      transform var(--mobile-nav-duration) ease,
      background-color var(--mobile-nav-duration) ease;
  }

  .accordion-icon-sp .vertical-sp {
    transform: rotate(90deg);
  }

  .accordion-icon-sp.active {
    background-color: var(--mobile-nav-accent);
  }

  .accordion-icon-sp.active .line-sp {
    background-color: var(--mobile-nav-surface);
  }

  .accordion-icon-sp.active .vertical-sp {
    transform: rotate(0deg);
  }

  /* 子メニューは行の高さを 0fr ⇔ 1fr で切り替えて開閉する。
     閉じている間は visibility で読み上げ・フォーカスの対象から外す */
  .accordion-body-sp {
    display: grid;
    grid-template-rows: 0fr;
    visibility: hidden;
    transition:
      grid-template-rows var(--mobile-nav-duration) ease,
      visibility 0s linear var(--mobile-nav-duration);
  }

  .accordion-body-sp.open {
    grid-template-rows: 1fr;
    visibility: visible;
    transition:
      grid-template-rows var(--mobile-nav-duration) ease,
      visibility 0s;
  }

  .accordion-body-sp__inner {
    min-height: 0;
    overflow: hidden;
  }

  .mobile-about-links {
    display: grid;
    gap: 4px;
    padding: 8px 16px 16px;
  }

  .mobile-about-links a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    min-height: 48px;
    box-sizing: border-box;
    padding: 8px 4px 8px 16px;
    border-radius: 8px;
    color: var(--mobile-nav-accent);
    font-size: 1rem;
    text-decoration: none;
    transition: background-color var(--mobile-nav-duration) ease;
  }

  .mobile-about-links a:hover {
    background: var(--mobile-nav-bg);
  }

  .tel-text-sp {
    font-size: 14px;
    color: #444;
  }

  .tel-number-sp {
    color: #00a2a8;
  }

  .btn-sp.web-btn-sp {
    background-color: #fff;
    border: 1px solid #00a2a8;
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 14px;
    display: flex;
    align-items: center;
    color: #00a2a8;
    text-decoration: none;
  }

  .btn-sp .icon-sp {
    margin-right: 6px;
  }

  .btn-sp .icon-sp img {
    width: 18px;
    height: 18px;
  }

  .organ-grid-menu-sp {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    padding: 8px 16px 20px;
  }

  /* 画像は装飾（alt=""）のため、見た目だけ名称の上に置く */
  .organ-item-sp {
    display: flex;
    flex-direction: column-reverse;
    justify-content: flex-end;
    align-items: center;
    gap: 8px;
    padding: 16px 8px 12px;
    background: var(--mobile-nav-bg);
    border: 1px solid transparent;
    border-radius: 12px;
    color: var(--mobile-nav-text);
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    transition:
      background-color var(--mobile-nav-duration) ease,
      border-color var(--mobile-nav-duration) ease;
  }

  .organ-item-sp:hover {
    background: var(--mobile-nav-surface);
    border-color: var(--mobile-nav-accent);
  }

  .organ-item-sp p {
    margin: 0;
    font-size: 0.875rem;
  }

  .organ-item-sp img {
    display: block;
    width: 56px;
    height: auto;
    margin: 0;
  }

  .contact-sp {
    position: absolute;
    right: 0;
    text-align: right;
    display: flex;
    gap: 5px;
    width: 100%;
    background: #95d0c0;
    align-items: center;
    justify-content: center;
    bottom: auto;
  }

  .contact-sp p {
    background: #fff;
    padding: 24px 20px;
    border-radius: 8px;
    color: #6f7373;
    font-size: 38px;
  }

  .contact-sp a {
    text-decoration: none;
    color: #68b4b3;
    font-size: 40px;
  }

  .contact-sp > .buttons-sp {
    display: flex;
    gap: 5px;
    justify-content: center;
    align-items: center;
    margin: 0;
  }

  .buttons-sp a {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    font-size: 14px;
    padding: 52px 20px;
  }

  .buttons-sp a {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    font-size: 40px !important;
    padding: 54px 40px;
  }

  .buttons-sp .btn .icon {
    width: 50px;
  }

  .buttons-sp .btn .icon img {
    width: 100%;
  }

  .recruit {
    display: none !important;
  }
}

@media screen and (max-width: 479px) {
  .mobile-nav-inner-sp {
    padding: 24px 16px 120px;
  }
  .accordion-header-sp {
    min-height: 56px;
    padding-inline: 20px 16px;
    font-size: 1.125rem;
  }
  .organ-grid-menu-sp {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding-inline: 12px;
  }
  .contact-sp {
    flex-wrap: wrap;
  }
  .contact-sp p,
  .contact-sp a,
  .buttons-sp a {
    font-size: 1rem !important;
  }
  .buttons-sp a {
    min-height: 44px;
    padding: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mobile-nav-sp,
  .mobile-nav-sp:not(.active),
  .accordion-header-sp,
  .accordion-icon-sp,
  .accordion-icon-sp .line-sp,
  .accordion-body-sp,
  .accordion-body-sp.open,
  .mobile-about-links a,
  .organ-item-sp {
    transition: none;
  }

  .mobile-nav-sp {
    transform: none;
  }
}