.gh-logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  gap: 6px;
  min-width: 0;
  color: var(--fg);
  line-height: 1;
  text-decoration: none;
  border-radius: 7px;
  overflow: visible;
  transition: opacity .15s ease;
}

.gh-logo:hover {
  color: var(--fg);
  text-decoration: none;
  opacity: .84;
}

.gh-logo:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.gh-logo-mark {
  display: block;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  object-fit: contain;
}

.gh-logo-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: 3px;
}

.gh-logo-name {
  color: var(--fg);
  font-family: "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", sans-serif;
  font-size: 14.25px;
  font-weight: 800;
  font-feature-settings: "palt" 1;
  font-kerning: normal;
  letter-spacing: -.09em;
  line-height: .96;
  white-space: nowrap;
  transition: color .2s ease;
}

.gh-logo-kmc {
  color: var(--fg2);
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: .34em;
  line-height: 1;
  white-space: nowrap;
  transition: color .2s ease;
  /* 案2「ダブルライン」: KMCの左右に二重線（2026-08-24 Makoto確定） */
  display: flex;
  align-items: center;
  align-self: stretch;
  gap: 7px;
  text-indent: .34em; /* letter-spacingの右余白ぶんを補正して光学中央に */
}

.gh-logo-kmc::before,
.gh-logo-kmc::after {
  content: "";
  flex: 1;
  min-width: 8px;
  height: 3px;
  border-top: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  opacity: .55;
}

@media (max-width: 768px) {
  .gh-logo {
    gap: 4.5px;
  }

  .gh-logo-mark {
    width: 36px;
    height: 36px;
    flex-basis: 36px;
  }

  .gh-logo-copy {
    gap: 2px;
  }

  .gh-logo-name {
    font-size: 11.8px;
    letter-spacing: -.1em;
  }

  .gh-logo-kmc {
    font-size: 8.5px;
    letter-spacing: .3em;
  }
}

@media (max-width: 374px) {
  .gh-logo {
    gap: 4px;
  }

  .gh-logo-mark {
    width: 34px;
    height: 34px;
    flex-basis: 34px;
  }

  .gh-logo-name {
    font-size: 11.2px;
  }
}