:root {
  color-scheme: light;
  --color-text: #0a1936;
  --color-link: #e6005a;
  --color-focus: #3c5966;
  --content-width: 1140px;
  --anchor-offset: 10rem;
  font-family: "メイリオ", Meiryo, "ヒラギノ角ゴ ProN", "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: 100%;
  line-height: 1.8;
  color: var(--color-text);
  background: #fff;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
}

[hidden] {
  display: none !important;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-link);
  text-underline-offset: 0.2em;
}

button {
  font: inherit;
}

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 4px;
}

[id] {
  scroll-margin-top: var(--anchor-offset);
}

.container {
  width: min(var(--content-width), calc(100% - 2rem));
  margin-inline: auto;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 0.5rem;
  left: 1rem;
  z-index: 100;
  padding: 0.5rem 1rem;
  color: #fff;
  background: var(--color-text);
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: #fff;
  box-shadow: 0 2px 12px rgb(0 0 0 / 5%);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
  padding: 1.25rem clamp(1rem, 2.5vw, 3rem);
}

.site-brand {
  flex: 0 1 auto;
  margin: 0;
  line-height: 1;
}

.site-brand__link {
  display: block;
}

.site-brand__logo {
  width: 320px;
}

.primary-navigation__list {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.primary-navigation a {
  display: flex;
  align-items: center;
  min-height: 44px;
  color: #222;
  font-size: 0.875rem;
  text-decoration: none;
}

.primary-navigation a:hover,
.primary-navigation a:focus-visible {
  color: var(--color-link);
  text-decoration: underline;
}

.navigation-toggle {
  display: grid;
  flex: 0 0 44px;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  color: #222;
  background: transparent;
  border: 1px solid #ddd;
  border-radius: 2px;
  cursor: pointer;
}

.navigation-toggle__icon {
  display: grid;
  gap: 5px;
  width: 22px;
}

.navigation-toggle__icon span {
  display: block;
  height: 2px;
  background: currentColor;
}

.navigation-toggle[aria-expanded="true"] .navigation-toggle__icon {
  position: relative;
  display: block;
  height: 22px;
}

.navigation-toggle[aria-expanded="true"] .navigation-toggle__icon span {
  position: absolute;
  top: 10px;
  width: 22px;
  transform: rotate(45deg);
}

.navigation-toggle[aria-expanded="true"] .navigation-toggle__icon span:nth-child(2) {
  opacity: 0;
}

.navigation-toggle[aria-expanded="true"] .navigation-toggle__icon span:last-child {
  transform: rotate(-45deg);
}

.site-footer {
  padding-block: 4rem 3rem;
  color: var(--color-link);
  text-align: center;
  background: #fff;
}

.site-footer__privacy-mark {
  display: block;
  width: 100px;
  margin: 0 auto 1.25rem;
}

.site-footer__policies {
  margin-bottom: 2rem;
}

.site-footer__policies-title {
  margin: 0 0 0.5rem;
  color: var(--color-text);
  font-size: 1rem;
  font-weight: 700;
}

.site-footer__policy-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.25rem 2rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer__policy-links li {
  min-width: 0;
  max-width: 100%;
}

.site-footer__policy-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  max-width: 100%;
  padding-block: 0.5rem;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.site-footer__policy-links a:hover,
.site-footer__policy-links a:focus-visible {
  text-decoration: underline;
}

@media (max-width: 900px) {
  .site-footer__policy-links {
    flex-direction: column;
    align-items: center;
  }
}

.footer-navigation ul {
  margin: 0;
  padding: 0;
  list-style: none;
  line-height: 1.5;
}

.footer-navigation a {
  display: inline-block;
  padding-block: 0.15rem;
  text-decoration: none;
}

.footer-navigation a:hover,
.footer-navigation a:focus-visible {
  text-decoration: underline;
}

.site-footer__copyright {
  margin: 0.5rem 0 0;
  line-height: 1.5;
}

.site-footer__copyright small {
  font-size: 0.75rem;
}

@media (max-width: 1024px) {
  :root {
    --anchor-offset: 8rem;
  }

  /* JS無効時はナビを常時表示し、長いヘッダーを追従させない。 */
  .site-header {
    position: static;
  }

  .site-header.has-navigation-script {
    position: sticky;
  }

  .site-header__inner {
    flex-wrap: wrap;
    gap: 0 1rem;
    padding: 1rem;
  }

  .site-brand__logo {
    width: min(240px, calc(100vw - 6rem));
  }

  .primary-navigation {
    flex: 0 0 100%;
    max-height: calc(100vh - 7rem);
    max-height: calc(100svh - 7rem);
    margin-top: 1rem;
    overflow-y: auto;
    border-top: 1px solid #e5e5e5;
  }

  .primary-navigation__list {
    display: block;
  }

  .primary-navigation li + li {
    border-top: 1px solid #eee;
  }

  .primary-navigation a {
    min-height: 48px;
    padding: 0.5rem 0.75rem;
    font-size: 1rem;
  }

  /* モバイル・タブレットでは中央配置を保ち、リンクごとの操作領域を広げる。 */
  .footer-navigation a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    max-width: 100%;
    padding: 0.5rem 0.75rem;
  }
}

@media (max-width: 767px) {
  .site-footer {
    padding-block: 3rem 2rem;
  }
}

/* 独立した先頭へ戻るボタン。既存のナビ・MOREの色には影響させない。 */
.back-to-top {
  position: fixed;
  right: max(1rem, env(safe-area-inset-right, 0px));
  bottom: calc(max(1rem, env(safe-area-inset-bottom, 0px)) + var(--back-to-top-footer-offset, 0px));
  z-index: 15;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  padding: 0;
  color: #fff;
  background: #FF003B;
  border: 1px solid #FF003B;
  border-radius: 2px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(1rem);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:focus-visible {
  color: #FF003B;
  background: #fff;
  outline: 3px solid var(--color-focus);
  outline-offset: 4px;
  box-shadow: 0 0 0 3px #fff;
}

@media (hover: hover) and (pointer: fine) {
  .back-to-top:hover {
    color: #FF003B;
    background: #fff;
  }
}

@media (prefers-reduced-motion: reduce) {
  .back-to-top,
  .back-to-top.is-visible {
    transition: none;
    transform: none;
  }
}