.c-single__container,
.c-single__header,
.c-single__breadcrumb,
.c-single__title,
.c-single__meta,
.c-single__terms,
.c-single__term,
.c-single__date,
.c-single__article,
.c-single__featured,
.c-single__content,
.c-single__pages,
.c-single__footer,
.c-single__post-nav,
.c-single__post-nav-link,
.c-single__post-nav-label,
.c-single__post-nav-title,
.c-single__back,
.c-single__back-link,
.c-single__empty {
  /* 必要に応じてデザインを追加してください */
  box-sizing: border-box;
}

.c-single__container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}
.c-single__header {
  margin-bottom: 2rem;
}
.c-single__breadcrumb {
  font-size: 0.9rem;
  margin-bottom: 1rem;
}
.c-single__title {
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
}
.c-single__meta {
  display: flex;
  gap: 1rem;
  align-items: center;
  font-size: 0.95rem;
  color: #888;
  margin-bottom: 1rem;
}
.c-single__terms {
  display: flex;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}
.c-single__term {
  background: #e3f2fd;
  color: #1976d2;
  border-radius: 4px;
  padding: 0.2em 0.7em;
  font-size: 0.95em;
}
.c-single__date {
  color: #888;
}
.c-single__featured {
  margin-bottom: 2rem;
}
.c-single__featured img {
  width: 100%;
  border-radius: 6px;
}
.c-single__content {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 2rem;
}
.c-single__pages {
  margin-top: 2rem;
  text-align: center;
}
.c-single__footer {
  margin-top: 2rem;
  border-top: 1px solid #eee;
  padding-top: 1.5rem;
}
.c-single__post-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.c-single__post-nav-link {
  flex: 1;
  display: block;
  padding: 0.7em 1.2em;
  background: #f5f5f5;
  border-radius: 4px;
  text-decoration: none;
  color: #1976d2;
  transition: background 0.2s;
  @media (max-width: 600px) {
    font-size: 0.9em;
  }
}
.c-single__post-nav-link:hover {
  background: #e3f2fd;
}
.c-single__post-nav-label {
  font-size: 0.9em;
  color: #888;
  display: block;
}
.c-single__post-nav-title {
  font-weight: bold;
}
.c-single__back {
  text-align: center;
}
.c-single__back-link {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.6em 1.2em;
  background: #1976d2;
  color: #fff;
  border-radius: 4px;
  text-decoration: none;
  font-weight: bold;
  transition: background 0.2s;
}
.c-single__back-link:hover {
  background: #1565c0;
}
.c-single__empty {
  color: #888;
  text-align: center;
  margin: 2rem 0;
}