@charset "UTF-8";

/* ================================================
   J-Publish 2段式ヘッダー
   PC：ブランドバー＋横並びナビ
   SP：ブランドバー＋開閉メニュー
   ================================================ */
.jp-header,
.jp-header *,
.jp-nav-backdrop {
  box-sizing: border-box;
}

.jp-header {
  --jp-nav-primary: #8B9ADA;
  --jp-nav-text: #333;
  --jp-nav-soft: #f3f3f3;
  --jp-nav-mobile-height: 66px;
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  height: auto;
  margin: 0;
  padding: 0;
  background: #fff;
  border: 0;
  overflow: visible;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}

/* 上段：画面幅いっぱいのブランドカラー */
.jp-header__top {
  width: 100%;
  height: 66px;
  background: var(--jp-nav-primary);
}

/* ロゴの左端をナビゲーションの左端に揃える */
.jp-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1000px;
  height: 100%;
  min-height: 0;
  margin: 0 auto;
  padding: 0 10px;
}

.jp-header__brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  width: 170px;
  max-width: 55vw;
  min-width: 0;
  margin: 0;
  padding: 0;
  text-decoration: none;
}

.jp-header__brand img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin: 0;
  padding: 0;
}

/* 下段：白背景の独立したナビゲーション */
.jp-site-nav {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
  background: #fff;
  border-bottom: 1px solid #d5d5d5;
}

.jp-site-nav__list {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  width: 100%;
  max-width: 1000px;
  min-height: 52px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.jp-site-nav__list > li {
  display: block;
  min-width: 0;
  margin: 0;
  padding: 0;
  border-left: 1px solid #d5d5d5;
  list-style: none;
}

.jp-site-nav__list > li:last-child {
  border-right: 1px solid #d5d5d5;
}

.jp-site-nav__list a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 52px;
  margin: 0;
  padding: 8px 6px;
  color: var(--jp-nav-text);
  background: #fff;
  border-radius: 0;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: .02em;
  text-align: center;
  white-space: nowrap;
  text-decoration: none;
  transition: background-color .18s ease;
}

.jp-site-nav__list a:hover,
.jp-site-nav__list a:focus-visible {
  color: #333;
  background: var(--jp-nav-soft);
  text-decoration: none;
}

/* 現在のページは青い枠線で表示 */
.jp-site-nav__list a[aria-current="page"] {
  position: relative;
  z-index: 1;
  color: #333;
  background: #fff;
  box-shadow: inset 0 0 0 1.5px #1957b9;
}

.jp-header__brand:focus-visible,
.jp-menu-toggle:focus-visible,
.jp-site-nav__list a:focus-visible {
  outline: 2px solid #1957b9;
  outline-offset: -2px;
}

/* PCでは書籍購入を非表示。SPでのみ表示する */
.jp-site-nav__sp-only { display: none !important; }
.jp-menu-toggle { display: none; }
.jp-nav-backdrop[hidden] { display: none !important; }
.jp-nav-backdrop { display: none; }

/* ================================================
   SP・タブレット：1023px以下
   ================================================ */
@media (max-width: 1023px) {
  .jp-header__inner { padding: 0 16px; }
  .jp-header__brand { width: 166px; }

  /* JavaScript無効時もナビリンクにアクセスできる */
  .jp-site-nav {
    display: block;
    width: 100%;
    margin: 0;
    padding: 0;
    background: #fff;
  }

  .jp-site-nav__list {
    display: block;
    max-width: none;
    min-height: 0;
    margin: 0;
    padding: 0 16px 14px;
  }

  .jp-site-nav__list > li,
  .jp-site-nav__list > li:last-child {
    display: block;
    width: 100%;
    border: 0;
    border-bottom: 1px solid #e5e5e5;
  }

  .jp-site-nav__list a {
    position: relative;
    justify-content: flex-start;
    min-height: 55px;
    padding: 13px 16px 13px 33px;
    font-size: 15px;
    font-weight: 500;
    text-align: left;
    white-space: normal;
  }

  .jp-site-nav__list a::before {
    position: absolute;
    top: 50%;
    left: 13px;
    width: 7px;
    height: 7px;
    content: "";
    border-top: 2px solid var(--jp-nav-primary);
    border-right: 2px solid var(--jp-nav-primary);
    transform: translateY(-50%) rotate(45deg);
  }

  .jp-site-nav__list a[aria-current="page"] {
    background: var(--jp-nav-soft);
    box-shadow: none;
    border-left: 3px solid #1957b9;
    padding-left: 30px;
  }

  .jp-site-nav__sp-only { display: block !important; }

  /* JavaScript初期化後のみ開閉ボタンを表示する */
  .jp-header.is-js-ready .jp-menu-toggle {
    display: inline-flex;
    flex: 0 0 auto;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    width: 52px;
    height: 49px;
    padding: 5px;
    color: #fff;
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .85);
    border-radius: 2px;
    cursor: pointer;
  }

  .jp-menu-toggle__icon {
    position: relative;
    display: block;
    width: 25px;
    height: 18px;
  }

  .jp-menu-toggle__icon::before,
  .jp-menu-toggle__icon::after,
  .jp-menu-toggle__icon > span {
    position: absolute;
    left: 0;
    display: block;
    width: 25px;
    height: 2px;
    content: "";
    background: #fff;
    border-radius: 2px;
    transition: top .18s ease, transform .18s ease, opacity .18s ease;
  }

  .jp-menu-toggle__icon::before { top: 1px; }
  .jp-menu-toggle__icon > span { top: 8px; }
  .jp-menu-toggle__icon::after { top: 15px; }
  .jp-menu-toggle__text {
    display: block;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: .05em;
    line-height: 1;
  }

  .jp-header.is-open .jp-menu-toggle__icon::before {
    top: 8px;
    transform: rotate(45deg);
  }
  .jp-header.is-open .jp-menu-toggle__icon > span { opacity: 0; }
  .jp-header.is-open .jp-menu-toggle__icon::after {
    top: 8px;
    transform: rotate(-45deg);
  }

  /* SPは実体のある白い面でメニューを表示する */
  .jp-header.is-js-ready .jp-site-nav {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: none;
    width: 100%;
    max-height: calc(100vh - var(--jp-nav-mobile-height));
    max-height: calc(100dvh - var(--jp-nav-mobile-height));
    overflow-y: auto;
    overscroll-behavior: contain;
    background: #fff;
    border-top: 1px solid #e5e5e5;
    box-shadow: 0 12px 22px rgba(0, 0, 0, .13);
    -webkit-overflow-scrolling: touch;
  }

  .jp-header.is-js-ready.is-open .jp-site-nav { display: block; }

  .jp-nav-backdrop:not([hidden]) {
    position: fixed;
    inset: 0;
    z-index: 990;
    display: block;
    background: rgba(20, 24, 40, .40);
  }

  html.jp-nav-open,
  body.jp-nav-open { overflow: hidden; }
}

@media (min-width: 1024px) {
  .jp-site-nav { display: block !important; }
  .jp-nav-backdrop { display: none !important; }
}

@media (prefers-reduced-motion: reduce) {
  .jp-menu-toggle__icon::before,
  .jp-menu-toggle__icon::after,
  .jp-menu-toggle__icon > span,
  .jp-site-nav__list a { transition: none; }
}