.blog-page {
  --blog-page-gutter: 64px;
  --blog-page-max: 1120px;
  --blog-blue: #4974dd;
  --blog-ink: #1e1e1e;
  --blog-muted: #777;
  --blog-soft: #f9f9f9;
  --blog-line: #e8e8e8;
  --blog-focus: rgba(73, 116, 221, 0.18);
  background: #fff;
  color: var(--blog-ink);
  font-family: Figtree, "Noto Sans JP", sans-serif;
  letter-spacing: 0.05em;
  min-height: 100vh;
  overflow-wrap: anywhere;
}

.blog-page p,
.blog-page li {
  letter-spacing: 0.03em;
  line-height: 2;
}

.blog-main {
  background: #fff;
  overflow: hidden;
}

.blog-page a {
  transition: color .2s ease, border-color .2s ease, opacity .2s ease, background .2s ease;
}

.blog-page a:focus-visible,
.blog-button:focus-visible {
  outline: 3px solid var(--blog-focus);
  outline-offset: 5px;
}

.blog-hero {
  background: #fff;
  border-bottom: 1px solid var(--blog-line);
  padding: 132px 32px 72px;
}

.blog-hero-inner,
.blog-section,
.blog-article-layout,
.blog-page .site-breadcrumb {
  margin: 0 auto;
  max-width: var(--blog-page-max);
  width: calc(100% - var(--blog-page-gutter));
}

.blog-page .site-breadcrumb {
  margin-bottom: 56px;
}

.blog-eyebrow {
  color: var(--blog-blue);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.16em;
  line-height: 1.6;
  margin: 0 0 24px;
}

.blog-title {
  color: var(--blog-ink);
  font-size: clamp(42px, 7vw, 72px);
  font-weight: 300;
  letter-spacing: 0.05em;
  line-height: 1.15;
  margin: 0;
}

.blog-lead {
  color: var(--blog-muted);
  font-size: 15px;
  line-height: 2.2;
  margin: 32px 0 0;
  max-width: 720px;
}

.blog-pill {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--blog-line);
  color: var(--blog-muted);
  font-size: 13px;
  font-weight: 400;
  line-height: 1.7;
  padding: 18px 0;
}

.blog-section {
  padding: 104px 0;
}

.blog-section + .blog-section {
  border-top: 1px solid var(--blog-line);
}

.blog-section-head {
  display: grid;
  gap: 18px;
  grid-template-columns: 260px minmax(0, 1fr);
  margin-bottom: 64px;
}

.blog-section-head .blog-eyebrow {
  grid-row: 1 / span 2;
}

.blog-section-head-split .blog-section-copy-wrap {
  display: grid;
  gap: 28px;
  max-width: 720px;
}

.blog-section-head-split {
  align-items: start;
  grid-template-columns: minmax(420px, 1fr) 260px;
}

.blog-section-head-split .blog-eyebrow {
  grid-column: 3;
  grid-row: auto;
  justify-self: start;
  margin: 8px 0 0;
}

.blog-section-title {
  color: var(--blog-ink);
  font-size: clamp(28px, 4vw, 45px);
  font-weight: 300;
  letter-spacing: 0.05em;
  line-height: 1.25;
  margin: 0;
}

.blog-section-copy {
  color: var(--blog-muted);
  font-size: 14px;
  line-height: 2.1;
  max-width: 680px;
}

.blog-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.blog-card {
  background: #fff;
  border: 1px solid var(--blog-line);
  color: inherit;
  display: grid;
  gap: 22px;
  grid-template-rows: auto auto 1fr auto;
  min-height: 100%;
  padding: 28px;
  text-decoration: none;
}

.blog-card[href]:hover {
  border-color: rgba(73, 116, 221, 0.34);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.06);
  opacity: 1;
  transform: translateY(-3px);
}

.blog-card-meta {
  align-content: start;
  color: var(--blog-muted);
  display: flex;
  flex-wrap: wrap;
  font-size: 12px;
  gap: 8px 14px;
  line-height: 1.7;
}

.blog-card-body {
  min-width: 0;
}

.blog-card-thumb {
  aspect-ratio: 16 / 9;
  background: var(--blog-soft);
  border-bottom: 1px solid var(--blog-line);
  margin: -28px -28px 0;
  overflow: hidden;
}

.blog-card-thumb img {
  display: block;
  filter: grayscale(1);
  height: 100%;
  object-fit: cover;
  opacity: .9;
  transition: filter .2s ease, opacity .2s ease, transform .2s ease;
  width: 100%;
}

.blog-card[href]:hover .blog-card-thumb img {
  filter: grayscale(.3);
  opacity: 1;
  transform: scale(1.03);
}

.blog-card-category {
  color: var(--blog-blue);
  font-size: 12px;
  font-weight: 400;
}

.blog-card h2,
.blog-card h3 {
  color: var(--blog-ink);
  font-size: clamp(20px, 2.2vw, 24px);
  font-weight: 400;
  letter-spacing: 0.03em;
  line-height: 1.7;
  margin: 0 0 16px;
}

.blog-card p {
  color: var(--blog-muted);
  font-size: 14px;
  line-height: 2;
  margin: 0;
  max-width: 680px;
}

.blog-card-link {
  align-self: start;
  color: var(--blog-blue);
  font-size: 13px;
  letter-spacing: 0.06em;
  line-height: 1.6;
  justify-self: end;
  text-align: right;
}

.blog-card[href] .blog-card-link::after {
  content: "→";
  margin-left: 8px;
}

.blog-topic-list {
  border-top: 1px solid var(--blog-line);
  display: grid;
  gap: 0;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.blog-topic {
  background: transparent;
  border-bottom: 1px solid var(--blog-line);
  padding: 28px 24px 28px 0;
}

.blog-topic strong {
  color: var(--blog-ink);
  display: block;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
  margin-bottom: 14px;
}

.blog-topic span {
  color: var(--blog-muted);
  display: block;
  font-size: 13px;
  line-height: 2;
}

.blog-cta {
  align-items: center;
  border-top: 1px solid var(--blog-line);
  display: grid;
  gap: 32px;
  grid-template-columns: minmax(0, 1fr) auto;
  margin-top: 96px;
  padding-top: 48px;
}

.blog-cta h2 {
  color: var(--blog-ink);
  font-size: clamp(24px, 3vw, 24px);
  font-weight: 300;
  line-height: 1.5;
  margin: 0 0 16px;
}

.blog-cta p {
  color: var(--blog-muted);
  font-size: 14px;
  line-height: 2;
  margin: 0;
}

.blog-button {
  align-items: center;
  border-bottom: 1px solid var(--blog-ink);
  color: var(--blog-ink);
  display: inline-flex;
  font-size: 14px;
  justify-content: center;
  letter-spacing: 0.1em;
  line-height: 1.7;
  min-height: 44px;
  padding: 8px 0;
  text-decoration: none;
  white-space: nowrap;
}

.blog-button:hover {
  color: var(--blog-blue);
  border-color: var(--blog-blue);
}

.blog-article {
  background: #fff;
  padding: 160px 0 112px;
}

.blog-article-layout {
  align-items: start;
  display: grid;
  gap: 72px;
  grid-template-columns: minmax(0, 720px) 260px;
}

.blog-article-layout > article {
  max-width: 100%;
  min-width: 0;
  width: 100%;
}

.blog-article-header {
  border-bottom: 1px solid var(--blog-line);
  padding-bottom: 56px;
}

.blog-article-header h1 {
  color: var(--blog-ink);
  font-size: clamp(30px, 4vw, 30px);
  font-weight: 300;
  letter-spacing: 0.04em;
  line-height: 1.45;
  margin: 32px 0;
}

.blog-article-description {
  color: var(--blog-muted);
  font-size: 15px;
  line-height: 2.2;
  margin: 32px 0 0;
  max-width: 680px;
}

.blog-article-thumb {
  aspect-ratio: 16 / 9;
  background: var(--blog-soft);
  border: 1px solid var(--blog-line);
  margin: 48px 0 0;
  overflow: hidden;
}

.blog-article-thumb img {
  display: block;
  filter: grayscale(1);
  height: 100%;
  object-fit: cover;
  opacity: .92;
  width: 100%;
}

.blog-article-body {
  margin-top: 72px;
  max-width: 680px;
  min-width: 0;
  width: 100%;
}

.blog-article-body h2 {
  color: var(--blog-ink);
  font-size: clamp(22px, 3vw, 24px);
  font-weight: 300;
  letter-spacing: 0.04em;
  line-height: 1.6;
  margin: 88px 0 28px;
}

.blog-article-body h2::before {
  background: var(--blog-blue);
  content: "";
  display: block;
  height: 1px;
  margin-bottom: 28px;
  width: 48px;
}

.blog-article-body h3 {
  color: var(--blog-ink);
  font-size: 20px;
  font-weight: 400;
  line-height: 1.7;
  margin: 48px 0 16px;
}

.blog-article-body p,
.blog-article-body li {
  color: #555;
  font-size: 15px;
  letter-spacing: 0.02em;
  line-height: 2.05;
}

.blog-article-body ul,
.blog-article-body ol {
  display: grid;
  gap: 12px;
  margin: 24px 0;
  padding-left: 1.4em;
}

.blog-article-body li {
  list-style: disc;
}

.blog-article-body strong {
  color: var(--blog-ink);
  font-weight: 600;
}

.blog-author-box {
  background: var(--blog-soft);
  border: 1px solid var(--blog-line);
  margin: 0 0 72px;
  padding: 32px;
}

.blog-author-label {
  color: var(--blog-blue);
  font-size: 12px;
  letter-spacing: 0.16em;
  line-height: 1.7;
  margin: 0 0 14px;
}

.blog-author-box h2 {
  color: var(--blog-ink);
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 0.04em;
  line-height: 1.7;
  margin: 0 0 16px;
}

.blog-author-box h2::before {
  display: none;
}

.blog-author-sp-break {
  display: none;
}

.blog-author-box p {
  font-size: 14px;
  line-height: 2;
  margin: 0;
}

.blog-table-wrap {
  border: 1px solid var(--blog-line);
  margin: 32px 0;
  overflow-x: auto;
}

.blog-table-wrap table {
  border-collapse: collapse;
  min-width: 640px;
  width: 100%;
}

.blog-table-wrap th,
.blog-table-wrap td {
  border-bottom: 1px solid var(--blog-line);
  color: #555;
  font-size: 14px;
  line-height: 1.8;
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
}

.blog-table-wrap th {
  background: var(--blog-soft);
  color: var(--blog-ink);
  font-weight: 600;
}

.blog-table-wrap tr:last-child td {
  border-bottom: 0;
}

.blog-checklist {
  list-style: none;
  padding-left: 0 !important;
}

.blog-checklist li {
  border-bottom: 1px solid var(--blog-line);
  list-style: none;
  padding: 12px 0 12px 28px;
  position: relative;
}

.blog-checklist li::before {
  color: var(--blog-blue);
  content: "□";
  left: 0;
  position: absolute;
  top: 12px;
}

.blog-reference-list li {
  color: var(--blog-muted);
  font-size: 14px;
}

.blog-article-note {
  border-top: 1px solid var(--blog-line);
  color: var(--blog-muted) !important;
  font-size: 13px !important;
  margin-top: 48px;
  padding-top: 24px;
}

.blog-answer-box {
  background: var(--blog-soft);
  border-left: 1px solid var(--blog-blue);
  margin: 48px 0 0;
  padding: 32px;
}

.blog-answer-box strong {
  color: var(--blog-blue);
  display: block;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.16em;
  line-height: 1.7;
  margin-bottom: 16px;
}

.blog-answer-box p {
  color: #555;
  font-size: 14px;
  line-height: 2.1;
  margin: 0;
}

.blog-article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
}

.blog-article-aside {
  align-self: start;
  position: sticky;
  top: 130px;
}

.blog-toc {
  border-top: 1px solid var(--blog-line);
  padding-top: 24px;
}

.blog-mobile-toc {
  display: none;
}

.blog-toc p {
  color: var(--blog-ink);
  font-size: 12px;
  letter-spacing: 0.16em;
  line-height: 1.7;
  margin: 0 0 18px;
}

.blog-toc a {
  border-bottom: 1px solid var(--blog-line);
  color: var(--blog-muted);
  display: block;
  font-size: 13px;
  line-height: 1.7;
  padding: 12px 0;
  text-decoration: none;
}

.blog-toc a:hover {
  color: var(--blog-blue);
}

.blog-related {
  border-top: 1px solid var(--blog-line);
  margin-top: 88px;
  padding-top: 40px;
}

@media (max-width: 900px) {
  .blog-section-head,
  .blog-topic-list,
  .blog-article-layout,
  .blog-cta {
    grid-template-columns: 1fr;
  }

  .blog-grid {
    grid-template-columns: 1fr;
  }

  .blog-topic {
    padding-right: 0;
  }

  .blog-section-head .blog-eyebrow {
    grid-row: auto;
  }

  .blog-section-head-split {
    grid-template-columns: 1fr;
  }

  .blog-section-head-split .blog-eyebrow {
    grid-column: 1;
    grid-row: auto;
    margin: 0;
  }

  .blog-article-aside {
    display: none;
  }

  .blog-mobile-toc {
    border-top: 1px solid var(--blog-line);
    display: grid;
    gap: 0;
    margin-top: 40px;
    padding-top: 20px;
  }

  .blog-mobile-toc p {
    color: var(--blog-ink);
    font-size: 12px;
    letter-spacing: 0.16em;
    line-height: 1.7;
    margin: 0 0 12px;
  }

  .blog-mobile-toc a {
    border-bottom: 1px solid var(--blog-line);
    color: var(--blog-muted);
    font-size: 13px;
    line-height: 1.7;
    padding: 12px 0;
    text-decoration: none;
  }
}

@media (max-width: 600px) {
  .blog-page {
    --blog-page-gutter: 48px;
  }

  .blog-hero {
    padding: 128px 0 72px;
  }

  .blog-hero-inner,
  .blog-section,
  .blog-article-layout,
  .blog-page .site-breadcrumb {
    width: calc(100% - var(--blog-page-gutter));
  }

  .blog-page .site-breadcrumb {
    margin-bottom: 44px;
  }

  .blog-title {
    font-size: 38px;
  }

  .blog-lead {
    margin-top: 36px;
  }

  .blog-section {
    padding: 72px 0;
  }

  .blog-section-head {
    margin-bottom: 40px;
  }

  .blog-card {
    gap: 18px;
    padding: 24px;
  }

  .blog-card-thumb {
    margin: -24px -24px 0;
  }

  .blog-article {
    padding: 124px 0 84px;
  }

  .blog-article-header {
    padding-bottom: 40px;
  }

  .blog-article-thumb {
    margin-top: 36px;
  }

  .blog-answer-box {
    padding: 24px;
  }

  .blog-author-box {
    margin-bottom: 56px;
    padding: 24px;
  }

  .blog-author-sp-break {
    display: block;
  }

  .blog-article-body {
    margin-top: 56px;
  }

  .blog-article-body h2 {
    margin-top: 72px;
  }

  .blog-button {
    width: 100%;
  }

  .blog-cta {
    margin-top: 72px;
  }
}

@media (max-width: 380px) {
  .blog-page {
    --blog-page-gutter: 36px;
  }

  .blog-hero-inner,
  .blog-section,
  .blog-article-layout,
  .blog-page .site-breadcrumb {
    width: calc(100% - var(--blog-page-gutter));
  }

  .blog-title {
    font-size: 34px;
  }

  .blog-article-header h1 {
    font-size: 27px;
    line-height: 1.55;
  }

  .blog-article-body p,
  .blog-article-body li,
  .blog-article-description {
    font-size: 14px;
  }

  .blog-answer-box {
    padding: 20px;
  }

  .blog-author-box {
    padding: 20px;
  }
}