/* Shared responsive navigation, language rhythm, equal guide cards and game UI helpers. */
body {
  word-spacing: .06em;
  letter-spacing: .012em;
}

p, li, .sub, .pc-body {
  overflow-wrap: anywhere;
}

.site-head .wrap {
  flex-wrap: nowrap;
  padding-inline: 22px;
}

.logo,
.nav a,
.btn,
.menu-toggle {
  word-spacing: normal;
}

.menu-toggle {
  display: none;
  width: 46px;
  height: 42px;
  padding: 10px;
  border: 1px solid rgba(0, 229, 255, .28);
  border-radius: 13px;
  background: linear-gradient(145deg, rgba(0, 229, 255, .12), rgba(0, 102, 255, .08));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .08), 0 0 20px rgba(0, 229, 255, .12);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 4px auto;
  border-radius: 99px;
  background: var(--neon);
  box-shadow: 0 0 8px rgba(0, 229, 255, .7);
  transition: transform .25s ease, opacity .2s ease, width .25s ease;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

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

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.guides-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
}

.post-card,
.post-card.large {
  grid-column: span 1;
  grid-row: span 1;
  display: flex;
  flex-direction: column;
  height: 100%;
  min-width: 0;
}

.post-card img,
.post-card.large img {
  aspect-ratio: 16 / 9;
}

.post-card .pc-body {
  display: flex;
  flex: 1;
  flex-direction: column;
}

.post-card .pc-body p {
  margin-top: auto;
}

.scroll-top {
  position: fixed;
  right: clamp(16px, 3vw, 30px);
  bottom: clamp(16px, 3vw, 30px);
  z-index: 80;
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border: 1px solid rgba(0, 229, 255, .45);
  border-radius: 16px;
  color: #06111d;
  background: linear-gradient(145deg, #66f3ff, #00a8ff);
  box-shadow: 0 0 0 4px rgba(0, 229, 255, .08), 0 10px 30px rgba(0, 0, 0, .45), 0 0 24px rgba(0, 229, 255, .28);
  opacity: 0;
  transform: translateY(18px) scale(.85);
  pointer-events: none;
  cursor: pointer;
  transition: opacity .25s ease, transform .25s ease, box-shadow .25s ease;
}

.scroll-top::before {
  content: "";
  width: 11px;
  height: 11px;
  border-top: 3px solid currentColor;
  border-left: 3px solid currentColor;
  transform: translateY(3px) rotate(45deg);
}

.scroll-top::after {
  content: "";
  position: absolute;
  width: 3px;
  height: 17px;
  border-radius: 3px;
  background: currentColor;
  transform: translateY(5px);
}

.scroll-top.visible {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.scroll-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 0 4px rgba(0, 229, 255, .12), 0 14px 34px rgba(0, 0, 0, .5), 0 0 34px rgba(0, 229, 255, .45);
}

@media (max-width: 900px) {
  .site-head .wrap {
    position: relative;
    min-height: 68px;
  }

  .menu-toggle {
    display: block;
    margin-left: auto;
  }

  .site-head .nav {
    position: absolute;
    top: calc(100% + 1px);
    right: 22px;
    left: 22px;
    display: grid;
    gap: 7px;
    padding: 12px;
    border: 1px solid var(--glass-border);
    border-radius: 0 0 18px 18px;
    background: rgba(8, 14, 26, .97);
    box-shadow: 0 22px 50px rgba(0, 0, 0, .55);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity .22s ease, transform .22s ease, visibility .22s;
  }

  .site-head .nav.open {
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
  }

  .site-head .nav a,
  .site-head .nav a:not(.play) {
    display: block;
    width: 100%;
    padding: 11px 14px;
    text-align: center;
  }

  .guides-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .site-head .wrap {
    flex-direction: row;
    align-items: center;
    gap: 12px;
  }

  .site-head .nav {
    justify-content: initial;
  }
}

@media (max-width: 560px) {
  .guides-grid {
    grid-template-columns: 1fr;
  }

  .scroll-top {
    width: 48px;
    height: 48px;
    border-radius: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .menu-toggle span,
  .site-head .nav,
  .scroll-top {
    transition: none;
  }
}