:root {
  --site-nav-ink: #2c211d;
  --site-nav-copy: #665c56;
  --site-nav-red: #dc4f4e;
  --site-nav-yellow: #e4bd25;
  --site-nav-surface: rgba(255, 253, 250, 0.96);
  --site-nav-border: rgba(44, 33, 29, 0.11);
  --site-header-anchor-offset: 84px;
}

:where(
  #main-visual,
  #two-circles,
  #people-circle,
  #values,
  #deliver,
  #future,
  #world-challenge,
  #gift-partner,
  #entry-navigation,
  #instagram,
  #news
) {
  scroll-margin-top: var(--site-header-anchor-offset);
}

.site-header,
.site-header *,
.site-menu-shell,
.site-menu-shell *,
.page-tools,
.page-tools * {
  box-sizing: border-box;
}

.site-header {
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 72px;
  padding: 10px clamp(20px, 3vw, 42px);
  border-bottom: 1px solid var(--site-nav-border);
  background: var(--site-nav-surface);
  box-shadow: 0 4px 18px rgba(53, 38, 28, 0.04);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.site-header__logo {
  position: relative;
  z-index: 2;
  display: block;
  width: clamp(174px, 17vw, 214px);
  padding: 5px 0;
  border-radius: 6px;
  pointer-events: auto;
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(220, 79, 78, 0.12);
}

.site-header__logo img {
  display: block;
  width: 100%;
  height: auto;
  pointer-events: none;
}

.site-menu-toggle,
.site-menu-close,
.page-guide__toggle,
.page-guide__close {
  margin: 0;
  border: 0;
  font: inherit;
  cursor: pointer;
}

.site-menu-toggle {
  position: relative;
  display: grid;
  place-content: center;
  gap: 5px;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 1px solid var(--site-nav-border);
  border-radius: 50%;
  background: #fff;
  color: var(--site-nav-ink);
  transition: border-color 0.22s ease, background-color 0.22s ease;
}

.site-menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: background-color 0.22s ease;
}

.site-menu-toggle:hover,
.site-menu-toggle:focus-visible {
  border-color: rgba(220, 79, 78, 0.42);
  background: #fff8ef;
  color: var(--site-nav-red);
}

.site-menu-shell {
  position: fixed;
  z-index: 1100;
  inset: 0;
  visibility: hidden;
  pointer-events: none;
}

.site-menu-shell__backdrop {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  background: rgba(35, 29, 26, 0.28);
  opacity: 0;
  cursor: default;
  transition: opacity 0.25s ease;
}

.site-menu-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(368px, calc(100vw - 28px));
  height: 100dvh;
  overflow-y: auto;
  padding: 25px clamp(22px, 4vw, 38px) 36px;
  border-left: 1px solid var(--site-nav-border);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: -18px 0 44px rgba(53, 38, 28, 0.11);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transform: translateX(102%);
  transition: transform 0.28s cubic-bezier(.22, .72, .26, 1);
}

.site-menu-shell.is-open {
  visibility: visible;
  pointer-events: auto;
}

.site-menu-shell.is-open .site-menu-shell__backdrop { opacity: 1; }
.site-menu-shell.is-open .site-menu-panel { transform: translateX(0); }

.site-menu-panel__head,
.page-guide__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-menu-panel__head {
  min-height: 48px;
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--site-nav-border);
}

.site-menu-panel__head p,
.page-guide__head p {
  margin: 0;
  color: var(--site-nav-ink);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.site-menu-close {
  position: relative;
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--site-nav-ink);
}

.site-menu-close span {
  position: absolute;
  top: 21px;
  left: 11px;
  width: 22px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.site-menu-close span:first-child { transform: rotate(45deg); }
.site-menu-close span:last-child { transform: rotate(-45deg); }

.site-menu-list {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-menu-link {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  align-items: center;
  min-height: 58px;
  padding: 8px 10px;
  border-radius: 10px;
  color: var(--site-nav-copy);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: 0.03em;
  text-decoration: none;
  transition: color 0.22s ease, background-color 0.22s ease;
}

.site-menu-link > i {
  width: 26px;
  color: #88817c;
  font-size: 20px;
  text-align: center;
  transition: color 0.22s ease;
}

.site-menu-link:hover,
.site-menu-link:focus-visible {
  background: #fff6e8;
  color: var(--site-nav-red);
}

.site-menu-link:hover > i,
.site-menu-link:focus-visible > i { color: var(--site-nav-yellow); }

.site-menu-about-icon {
  position: relative;
  display: block;
  width: 32px;
  height: 32px;
}

.site-menu-about-icon img {
  position: absolute;
  inset: 0;
  width: 32px;
  height: 32px;
  object-fit: contain;
  transition: opacity 0.23s ease;
}

.site-menu-about-icon__gray { opacity: 1; }
.site-menu-about-icon__color { opacity: 0; }
.site-menu-link--about:hover .site-menu-about-icon__gray,
.site-menu-link--about:focus-visible .site-menu-about-icon__gray { opacity: 0; }
.site-menu-link--about:hover .site-menu-about-icon__color,
.site-menu-link--about:focus-visible .site-menu-about-icon__color { opacity: 1; }

.site-header__logo:focus-visible,
.site-menu-toggle:focus-visible,
.site-menu-close:focus-visible,
.site-menu-link:focus-visible,
.page-guide__toggle:focus-visible,
.page-guide__close:focus-visible,
.page-guide__list a:focus-visible,
.page-top-link:focus-visible,
.world-challenge__viva-link a:focus-visible {
  outline: 3px solid var(--site-nav-red);
  outline-offset: 3px;
}

.world-challenge__viva-link {
  width: min(calc(100% - 40px), 1180px);
  margin: clamp(66px, 8vw, 92px) auto 0;
  text-align: right;
}

.world-challenge__viva-link a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 1px;
  color: var(--site-nav-red);
  font-size: 15px;
  font-weight: 750;
  letter-spacing: 0.035em;
  text-underline-offset: 5px;
}

.world-challenge__viva-link a span {
  display: inline-block;
  transition: transform 0.22s ease;
}

.world-challenge__viva-link a:hover span,
.world-challenge__viva-link a:focus-visible span { transform: translateX(4px); }

.page-tools {
  position: fixed;
  z-index: 920;
  right: clamp(14px, 2.2vw, 30px);
  bottom: 22px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 28px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.24s ease, transform 0.24s ease, visibility 0s linear 0.24s;
}

.page-tools.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
  transition-delay: 0s;
}

.page-guide { position: relative; }

.page-guide__toggle,
.page-top-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border: 1px solid var(--site-nav-border);
  border-radius: 999px;
  background: rgba(255, 253, 250, 0.94);
  box-shadow: 0 8px 24px rgba(53, 38, 28, 0.09);
  color: var(--site-nav-ink);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.055em;
  text-decoration: none;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: border-color 0.22s ease, color 0.22s ease, background-color 0.22s ease;
}

.page-guide__toggle {
  min-width: 112px;
  padding: 10px 17px;
}

.page-top-link {
  min-width: 78px;
  padding: 10px 15px;
}

.page-guide__toggle:hover,
.page-guide__toggle:focus-visible,
.page-top-link:hover,
.page-top-link:focus-visible {
  border-color: rgba(220, 79, 78, 0.42);
  background: #fff7eb;
  color: var(--site-nav-red);
}

.page-guide__panel {
  position: absolute;
  right: 0;
  bottom: calc(100% + 14px);
  width: min(276px, calc(100vw - 28px));
  max-height: min(620px, calc(100dvh - 148px));
  overflow-y: auto;
  padding: 20px;
  border: 1px solid var(--site-nav-border);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 16px 48px rgba(53, 38, 28, 0.14);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0s linear 0.22s;
}

.page-guide__panel.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
  transition-delay: 0s;
}

.page-guide__head {
  min-height: 34px;
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--site-nav-border);
}

.page-guide__close {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: 50%;
  background: transparent;
  color: #796e68;
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
}

.page-guide__list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: page-guide;
}

.page-guide__list li { counter-increment: page-guide; }

.page-guide__list a {
  position: relative;
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 3px;
  align-items: baseline;
  min-height: 41px;
  padding: 10px 8px;
  border-radius: 7px;
  color: var(--site-nav-copy);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.55;
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.page-guide__list a::before {
  content: counter(page-guide, decimal-leading-zero);
  color: #aaa29d;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.page-guide__list a:hover,
.page-guide__list a:focus-visible,
.page-guide__list a.is-current {
  background: #fff5e8;
  color: var(--site-nav-red);
}

.page-guide__list a.is-current {
  background: rgba(228, 189, 37, 0.075);
  color: #c65d59;
  font-weight: 750;
}
.page-guide__list a.is-current::before { color: #d2ad21; }

.page-guide__close:focus-visible {
  outline: 2px solid rgba(220, 79, 78, 0.62);
  outline-offset: 1px;
}

@media (max-width: 960px) {
  :root { --site-header-anchor-offset: 78px; }

  .site-header {
    min-height: 66px;
    padding-inline: 20px;
  }

  .site-header__logo { width: 176px; }
  .site-menu-panel { width: min(348px, calc(100vw - 24px)); }

  .page-guide__panel { width: min(270px, calc(100vw - 28px)); }
}

@media (max-width: 680px) {
  :root { --site-header-anchor-offset: 72px; }

  .site-header {
    min-height: 60px;
    padding: 7px 12px 7px 15px;
  }

  .site-header__logo { width: 146px; }

  .site-menu-toggle {
    width: 46px;
    height: 46px;
  }

  .site-menu-panel {
    width: clamp(286px, 76vw, 310px);
    padding: 14px 16px 24px;
  }

  .site-menu-panel__head {
    margin-bottom: 10px;
    padding-bottom: 10px;
  }

  .site-menu-list { gap: 1px; }

  .site-menu-link {
    grid-template-columns: 40px minmax(0, 1fr);
    min-height: 55px;
    font-size: 14px;
  }

  .world-challenge__viva-link {
    width: min(calc(100% - 32px), 560px);
    margin-top: 60px;
    text-align: left;
  }

  .page-tools {
    right: 12px;
    bottom: 14px;
    gap: 22px;
  }

  .page-guide__toggle {
    min-width: 102px;
    min-height: 46px;
    padding: 9px 14px;
    font-size: 12px;
  }

  .page-top-link {
    min-width: 70px;
    min-height: 44px;
    padding: 8px 12px;
    font-size: 12px;
  }

  .page-guide__panel {
    width: 62vw;
    min-width: 232px;
    max-width: 260px;
    max-height: calc(100dvh - 136px);
    padding: 16px;
  }

  .page-guide__list a {
    min-height: 39px;
    padding-block: 9px;
    font-size: 11.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-menu-shell__backdrop,
  .site-menu-panel,
  .site-menu-link,
  .site-menu-link > i,
  .site-menu-about-icon img,
  .world-challenge__viva-link a span,
  .page-tools,
  .page-guide__panel,
  .page-guide__toggle,
  .page-top-link {
    transition: none !important;
  }
}