.pi-article {
  color: #253550;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  overflow-wrap: anywhere;
}

.pi-article .pi-post-detail__header {
  padding-bottom: 32px;
  border-bottom: 1px solid #dce3eb;
}

.pi-article p { font-family: inherit; }

.pi-article .pi-post-detail__header h1 {
  margin: 16px 0 24px;
  color: #142238;
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: .02em;
}

.pi-article .pi-post-detail__header time {
  color: #596779;
  font-size: 14px;
}

.pi-post-dates { display: flex; flex-wrap: wrap; gap: 12px 24px; margin: 0; color: #596779; font-size: 13px; line-height: 1.8; }
.pi-post-dates > div { display: flex; gap: 8px; flex-wrap: wrap; }
.pi-post-dates dt { font-weight: 400; }
.pi-post-dates dd { margin: 0; }

.pi-article .pi-post-detail__lead {
  margin: 32px 0 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: #465469;
  font-size: 17px;
  font-weight: 400;
  line-height: 1.95;
}

.pi-post-toc {
  margin: 40px 0;
  padding: 24px 28px;
  border: 1px solid #dce3eb;
  border-radius: 8px;
  background: #f5f7fa;
  color: #253550;
  font-size: 14px;
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.pi-post-toc summary {
  display: list-item;
  cursor: pointer;
  color: #142238;
  font-size: 16px;
  font-weight: 700;
}

.pi-post-toc ol {
  display: grid;
  gap: 10px;
  margin: 20px 0 0;
  padding-left: 24px;
  list-style: decimal;
}

.pi-post-toc li::marker { color: #b60010; }
.pi-post-toc__sub { margin-left: 20px; }
.pi-post-toc a { color: #253550; text-decoration: none; }
.pi-post-toc a:hover { color: #b60010; text-decoration: underline; }
.pi-post-toc a:focus-visible, .pi-post-toc summary:focus-visible { outline: 2px solid #b60010; outline-offset: 4px; }

.pi-article .pi-post-detail__content {
  margin-top: 40px;
  color: #253550;
  font-size: 17px;
  line-height: 1.95;
}

.pi-article .pi-post-detail__content > * { margin: 0 0 24px; }
.pi-article .pi-post-detail__content > :last-child { margin-bottom: 0; }
.pi-article .pi-post-detail__content :is(h1, h2, h3, h4, h5, h6) {
  color: #142238;
  font-weight: 700;
  line-height: 1.5;
  scroll-margin-top: 120px;
}

.pi-article .pi-post-detail__content :is(h1, h2) {
  margin: 56px 0 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid #dce3eb;
  font-size: 27px;
}

.pi-article .pi-post-detail__content :is(h3, h4, h5, h6) { margin: 36px 0 16px; font-size: 21px; }
.pi-article .pi-post-detail__content strong { color: #142238; font-weight: 700; }
.pi-article .pi-post-detail__content em { font-style: italic; }
.pi-article .pi-post-detail__content a { color: #b60010; text-decoration: underline; text-underline-offset: 4px; }
.pi-article .pi-post-detail__content :is(ul, ol) { padding-left: 1.8em; }
.pi-article .pi-post-detail__content ul { list-style: disc; }
.pi-article .pi-post-detail__content ol { list-style: decimal; }
.pi-article .pi-post-detail__content li + li { margin-top: 8px; }
.pi-article .pi-post-detail__content li > p { margin: 0; }
.pi-article .pi-post-detail__content blockquote {
  padding: 16px 24px;
  border-left: 3px solid #b60010;
  background: #f5f7fa;
  color: #465469;
}
.pi-article .pi-post-detail__content blockquote > :last-child { margin-bottom: 0; }
.pi-article .pi-post-detail__content pre { max-width: 100%; padding: 20px; overflow-x: auto; background: #f5f7fa; border: 1px solid #dce3eb; }
.pi-article .pi-post-detail__content code { font-family: Consolas, monospace; font-size: .9em; }
.pi-article .pi-post-detail__content :not(pre) > code { padding: 2px 6px; background: #f0f3f7; border-radius: 3px; }
.pi-article .pi-post-detail__content table { display: block; width: 100%; max-width: 100%; overflow-x: auto; border-collapse: collapse; font-size: 15px; }
.pi-article .pi-post-detail__content :is(th, td) { padding: 12px 16px; border: 1px solid #dce3eb; }
.pi-article .pi-post-detail__content th { background: #f5f7fa; font-weight: 700; }
.pi-article .pi-post-detail__content img { display: block; max-width: 100%; height: auto; margin: 32px auto; border-radius: 4px; }
.pi-article .pi-post-detail__content hr { margin: 40px 0; border: 0; border-top: 1px solid #dce3eb; }

.pi-article .pi-post-detail__content .pi-post-cta-block {
  margin: 40px 0;
  padding: 28px;
  border: 1px solid #dce3eb;
  border-radius: 8px;
  background: #f5f7fa;
  text-align: center;
}
.pi-article .pi-post-detail__content .pi-post-cta {
  box-sizing: border-box;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  max-width: 100%;
  min-height: 52px;
  padding: 14px 28px;
  border-radius: 4px;
  background: #b60010;
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  text-decoration: none;
}
.pi-post-cta::after { content: '\2192'; flex-shrink: 0; }
.pi-article .pi-post-detail__content .pi-post-cta:hover { background: #8f000d; }
.pi-post-cta:focus-visible, .pi-related-post:focus-visible { outline: 2px solid #b60010; outline-offset: 4px; }
.pi-article .pi-post-detail__content .pi-post-image-cta-block { margin: 40px 0; }
.pi-post-image-cta { display: block; width: fit-content; max-width: 100%; margin: 0 auto; border-radius: 4px; }
.pi-article .pi-post-detail__content .pi-post-image-cta img { max-width: 100%; height: auto; margin: 0; }
.pi-post-image-cta:hover { opacity: .85; }
.pi-post-image-cta:focus-visible { outline: 2px solid #b60010; outline-offset: 4px; }
.pi-related-posts { margin-top: 56px; padding-top: 40px; border-top: 1px solid #dce3eb; }
.pi-related-posts > h2 { margin: 0 0 24px; color: #142238; font-size: 26px; font-weight: 700; }
.pi-related-posts__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.pi-related-post { display: flex; flex-direction: column; min-width: 0; overflow: hidden; border: 1px solid #dce3eb; border-radius: 6px; color: #253550; text-decoration: none; }
.pi-related-post:hover { border-color: #b60010; color: #253550; }
.pi-related-post > img, .pi-related-post__placeholder { display: flex; align-items: center; justify-content: center; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; background: #f5f7fa; color: #596779; font-size: 20px; letter-spacing: .16em; }
.pi-related-post__body { display: flex; flex: 1; flex-direction: column; gap: 12px; padding: 20px; }
.pi-related-post__meta { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; color: #596779; font-size: 12px; }
.pi-related-post h3 { margin: 0; color: #142238; font-size: 17px; font-weight: 700; line-height: 1.7; }
.pi-related-post__excerpt { margin: 0; color: #596779; font-size: 14px; line-height: 1.8; }
.pi-related-post__more { margin-top: auto; color: #b60010; font-size: 14px; font-weight: 700; }

@media (max-width: 767px) {
  .pi-article .pi-post-detail__content .pi-post-cta-block { padding: 20px 16px; }
  .pi-article .pi-post-detail__content .pi-post-cta { width: 100%; padding: 14px 20px; }
  .pi-related-posts__grid { grid-template-columns: 1fr; }
  .pi-post-toc { margin: 32px 0; padding: 20px; }
  .pi-article .pi-post-detail__content, .pi-article .pi-post-detail__lead { font-size: 16px; }
  .pi-article .pi-post-detail__content :is(h1, h2) { margin-top: 40px; font-size: 23px; }
  .pi-article .pi-post-detail__content :is(h3, h4, h5, h6) { font-size: 19px; }
}