:root {
  --md-typeset-width: 2400px;
}

@media screen and (min-width: 60rem) {
  .md-grid {
    max-width: 2400px;
  }

  .md-content {
    max-width: 2400px;
  }
}

.md-header__title-wrap {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.md-header__title-link {
  color: inherit;
  text-decoration: none;
  font-weight: 700;
}

.md-header__title-link:hover,
.md-header__title-link:focus {
  text-decoration: underline;
}

.md-header__title-separator {
  color: inherit;
}

/* ページ見出しを太く強調し、装飾ラインを追加 */
.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4 {
  font-weight: 700;
  line-height: 1.25;
  position: relative;
  color: var(--md-default-fg-color);
}

.md-typeset h1 {
  font-size: clamp(2.1rem, 1.6vw + 1.5rem, 2.6rem);
  border-left: 0.6rem solid var(--md-primary-fg-color);
  padding-left: 1.5rem;
  padding-bottom: 1rem;
  margin-top: 2.5rem;
  margin-bottom: 1.5rem;
}

.md-typeset h1::after {
  content: "";
  display: block;
  height: 0.35rem;
  width: min(12rem, 45%);
  margin-top: 0.75rem;
  background: linear-gradient(90deg, var(--md-primary-fg-color), var(--md-accent-fg-color));
  border-radius: 999px;
}

.md-typeset h2 {
  font-size: clamp(1.75rem, 1.3vw + 1.25rem, 2.2rem);
  border-left: 0.45rem solid var(--md-primary-fg-color);
  padding-left: 1.25rem;
  padding-bottom: 0.8rem;
  margin-top: 2.25rem;
  margin-bottom: 1.4rem;
}

.md-typeset h2::after {
  content: "";
  display: block;
  height: 0.3rem;
  width: min(10rem, 40%);
  margin-top: 0.65rem;
  background: linear-gradient(90deg, var(--md-primary-fg-color), var(--md-accent-fg-color));
  border-radius: 999px;
}

.md-typeset h3 {
  font-size: clamp(1.55rem, 1.2vw + 1.15rem, 2rem);
  border-left: 0.35rem solid var(--md-accent-fg-color);
  padding-left: 1rem;
  padding-bottom: 0.6rem;
  margin-top: 2rem;
  margin-bottom: 1.2rem;
}

.md-typeset h3::after {
  content: "";
  display: block;
  height: 0.25rem;
  width: min(8rem, 35%);
  margin-top: 0.5rem;
  background: linear-gradient(90deg, var(--md-accent-fg-color), transparent);
  border-radius: 999px;
}

.md-typeset h4 {
  font-size: clamp(1.3rem, 0.85vw + 1rem, 1.6rem);
  border-left: 0.25rem solid var(--md-accent-fg-color);
  padding-left: 0.85rem;
  padding-bottom: 0.45rem;
  margin-top: 1.75rem;
  margin-bottom: 1rem;
}

.md-typeset h4::after {
  content: "";
  display: block;
  height: 0.18rem;
  width: min(6rem, 30%);
  margin-top: 0.45rem;
  background: linear-gradient(90deg, var(--md-accent-fg-color), rgba(0, 0, 0, 0));
  border-radius: 999px;
}