/* PRODUCTのヘッダーサブメニュー。layout.cssの後に読み込みます。 */
@media (min-width: 981px) {
  .header-product {
    position: relative;
    display: flex;
    align-items: center;
    align-self: stretch;
  }
  .header-product > .nav-link { padding-right: 12px; }
  .header-product__chevron {
    position: absolute;
    right: 0;
    top: 14px;
    width: 5px;
    height: 5px;
    border-right: 1px solid currentColor;
    border-bottom: 1px solid currentColor;
    transform: rotate(45deg);
    transition: transform .22s ease;
  }
  .header-product__submenu {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    z-index: 10;
    width: 242px;
    max-width: calc(100vw - 32px);
    margin: 0;
    padding: 8px;
    list-style: none;
    background: #fff;
    border: 1px solid rgba(0,0,0,.08);
    border-top: 3px solid var(--red, #d6001c);
    border-radius: 0 0 10px 10px;
    box-shadow: 0 14px 30px rgba(0,0,0,.13);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translate(-50%, -8px);
    transition: opacity .22s ease, transform .22s ease, visibility .22s ease;
  }
  /* 親リンクからサブメニューへ移る途中の隙間もホバー範囲に含めます。 */
  .header-product__submenu::before {
    content: '';
    position: absolute;
    top: -15px;
    left: 0;
    right: 0;
    height: 15px;
  }
  .header-product:hover .header-product__submenu,
  .header-product:focus-within .header-product__submenu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translate(-50%, 0);
  }
  .header-product__submenu[hidden] { display: none; }
  .header-product:hover .header-product__chevron,
  .header-product:focus-within .header-product__chevron { transform: rotate(225deg); }
  .header-product:hover > .nav-link .nav-en,
  .header-product:hover > .nav-link .nav-ja { color: var(--red, #d6001c); }
  .header-product__submenu li { margin: 0; padding: 0; }
  .header-product__submenu a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    min-height: 46px;
    padding: 12px;
    border-radius: 5px;
    color: #222;
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.6;
    transition: color .18s ease, background .18s ease;
  }
  .header-product__submenu a:hover,
  .header-product__submenu a:focus-visible,
  .header-product__submenu a.is-current {
    color: var(--red, #d6001c);
    background: rgba(214,0,28,.06);
  }
  .header-product__submenu a:focus-visible { outline: 2px solid currentColor; outline-offset: -2px; }
}

@media (max-width: 980px) {
  .drawer-product-group {
    border: 1px solid rgba(255,255,255,.16);
    border-radius: 12px;
    background: rgba(255,255,255,.04);
  }
  .drawer-product-group > .drawer-link {
    border: 0;
    background: transparent;
    border-radius: 12px 12px 0 0;
    padding-bottom: 10px;
  }
  .drawer-product-submenu {
    display: grid;
    gap: 6px;
    margin: 0 14px 14px;
    padding: 0 0 0 12px;
    border-left: 1px solid rgba(255,255,255,.30);
    list-style: none;
  }
  .drawer-product-submenu li { margin: 0; padding: 0; }
  .drawer-product-submenu a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    min-height: 44px;
    padding: 10px 12px;
    border-radius: 6px;
    background: rgba(255,255,255,.05);
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    line-height: 1.6;
    text-decoration: none;
    transition: background .18s ease;
  }
  .drawer-product-submenu a:hover,
  .drawer-product-submenu a.is-current { background: rgba(255,255,255,.14); }
  .drawer-product-submenu a:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
  /* メニューを閉じた状態では、非表示リンクへTab移動させません。 */
  .site-header .drawer { visibility: hidden; }
  .site-header #nav-toggle:checked ~ .drawer { visibility: visible; }
}
.product-menu-arrow { flex: 0 0 auto; font-size: 16px; line-height: 1; }
@media (prefers-reduced-motion: reduce) {
  .header-product__submenu,
  .header-product__chevron,
  .header-product__submenu a,
  .drawer-product-submenu a { transition: none; }
}