/* ============================================================
   Blog Article — editorial style (Zen Old Mincho + Bodoni + Noto)
   Chapter frontispiece / 6 changes list / Before-After / FAQ / CTA / Author bio
   ============================================================ */

.blog-article-main {
  background: var(--paper);
}

.blog-article {
  color: var(--color-ink);
}

/* ---------- Frontispiece ---------- */
.blog-article__frontispiece {
  padding-block: clamp(72px, 10vw, 120px) clamp(48px, 6vw, 80px);
  border-bottom: 1px solid var(--color-line);
  background: var(--paper);
}
.blog-article__breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-jp);
  font-size: 12px;
  color: var(--color-mute);
  letter-spacing: .06em;
  margin-bottom: 32px;
}
.blog-article__breadcrumb a {
  color: var(--color-sub);
  text-decoration: none;
  transition: color .15s;
}
.blog-article__breadcrumb a:hover { color: var(--color-ink); }
.blog-article__breadcrumb [aria-current="page"] {
  color: var(--color-ink);
  font-weight: 500;
}
.blog-article__breadcrumb [aria-hidden="true"] {
  color: var(--color-line);
}

.blog-article__eyebrow {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--color-mute);
  margin-bottom: 24px;
  font-feature-settings: "ss01" 1;
}
.blog-article__eyebrow span[lang="en"] {
  color: var(--color-ink);
}

.blog-article__title {
  font-family: var(--font-jp-mincho);
  font-size: clamp(40px, 6vw, 76px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: .015em;
  margin: 0 0 20px;
  text-wrap: balance;
  color: var(--color-ink);
}
.blog-article__subtitle {
  font-family: var(--font-jp);
  font-size: clamp(15px, 1.6vw, 18px);
  font-weight: 500;
  line-height: 1.75;
  letter-spacing: .04em;
  color: var(--color-sub);
  margin: 0 0 48px;
  max-width: var(--measure);
  text-wrap: pretty;
  hanging-punctuation: first allow-end last;
}

.blog-article__meta {
  display: flex;
  gap: clamp(24px, 4vw, 48px);
  flex-wrap: wrap;
  padding-top: 32px;
  border-top: 1px solid var(--color-line);
}
.blog-article__meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.blog-article__meta-label {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--color-mute);
}
.blog-article__meta-value {
  font-family: var(--font-jp);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.blog-article__meta-value small {
  font-size: 11px;
  color: var(--color-mute);
  font-weight: 400;
}
.blog-article__meta-value.numeric {
  font-family: var(--font-serif-numeric);
  font-weight: 700;
  font-size: 15px;
  font-variant-numeric: tabular-nums lining-nums;
  font-feature-settings: "tnum" 1, "lnum" 1;
  letter-spacing: .02em;
}

/* ---------- Section ---------- */
.blog-article__section {
  padding-block: clamp(64px, 8vw, 112px);
  background: var(--paper);
}
.blog-article__section--alt {
  background: var(--paper-2);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}
.blog-article__section-head {
  max-width: 720px;
  margin-inline: auto;
  margin-bottom: clamp(48px, 6vw, 80px);
  text-align: center;
}
.blog-article__section-head .eyebrow-en {
  margin-bottom: 16px;
}
.blog-article__section-lead {
  font-family: var(--font-jp);
  font-size: clamp(14px, 1.5vw, 17px);
  line-height: 1.95;
  letter-spacing: .04em;
  color: var(--color-sub);
  max-width: 44ch;
  margin-inline: auto;
  margin-top: 16px;
  text-wrap: pretty;
}

.blog-article__h2 {
  font-family: var(--font-jp-mincho);
  font-size: clamp(24px, 3.2vw, 38px);
  font-weight: 900;
  line-height: 1.4;
  letter-spacing: .015em;
  color: var(--color-ink);
  margin: 0 0 20px;
  text-wrap: balance;
}

/* Prose (本文用) */
.blog-article__prose {
  max-width: 720px;
  margin-inline: auto;
}
.blog-article__prose p {
  font-family: var(--font-jp);
  font-size: 15px;
  line-height: 2;
  letter-spacing: .04em;
  color: var(--color-ink);
  margin: 0 0 20px;
  text-wrap: pretty;
  hanging-punctuation: first allow-end last;
}
.blog-article__prose p strong {
  font-weight: 700;
  color: var(--color-ink);
}
.blog-article__lead {
  font-family: var(--font-jp);
  font-size: clamp(15px, 1.6vw, 18px) !important;
  line-height: 2 !important;
  letter-spacing: .03em !important;
  color: var(--color-ink) !important;
  padding: 24px 0;
  border-top: 2px solid var(--color-iki);
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 40px !important;
}

.blog-article__list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}
.blog-article__list li {
  font-family: var(--font-jp);
  font-size: 14px;
  line-height: 1.95;
  letter-spacing: .04em;
  color: var(--color-ink);
  padding: 10px 0 10px 22px;
  border-bottom: 1px solid var(--color-line-soft);
  position: relative;
}
.blog-article__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 12px;
  height: 2px;
  background: var(--color-iki);
}
.blog-article__list li:last-child { border-bottom: 0; }
.blog-article__list strong {
  font-weight: 700;
  color: var(--color-ink);
}

.blog-article__pullquote {
  font-family: var(--font-jp-mincho);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 500;
  line-height: 1.75;
  letter-spacing: .02em;
  color: var(--color-ink);
  padding: 24px 32px;
  margin: 32px 0;
  border-left: 3px solid var(--color-iki);
  background: transparent;
  hanging-punctuation: first allow-end last;
  text-wrap: pretty;
}

/* ---------- 6 changes ---------- */
.blog-article__changes {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(48px, 6vw, 72px) clamp(32px, 4vw, 56px);
}
@media (max-width: 900px) {
  .blog-article__changes { grid-template-columns: repeat(2, 1fr); gap: 56px 32px; }
}
@media (max-width: 640px) {
  .blog-article__changes { grid-template-columns: 1fr; gap: 48px; }
}
.blog-article__change {
  display: grid;
  gap: 20px;
}
.blog-article__change-numeral {
  display: block;
  font-family: var(--font-serif-numeric);
  font-size: clamp(72px, 8vw, 112px);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -.02em;
  color: var(--color-iki);
}
@supports (-webkit-text-stroke: 1px black) {
  .blog-article__change-numeral {
    -webkit-text-stroke: 1.5px var(--color-iki);
    color: transparent;
    -webkit-text-fill-color: transparent;
  }
}
.blog-article__change-body {
  padding-top: 8px;
  border-top: 1px solid var(--color-ink-08);
}
.blog-article__change-tag {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-jp);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--color-sub);
  margin: 12px 0 12px;
}
.blog-article__change-marker {
  width: 16px;
  height: 2px;
  background: var(--color-iki);
  display: block;
  flex-shrink: 0;
}
.blog-article__change-title {
  font-family: var(--font-jp);
  font-size: clamp(17px, 1.8vw, 21px);
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: .015em;
  color: var(--color-ink);
  margin: 0 0 12px;
  text-wrap: balance;
}
.blog-article__change p {
  font-family: var(--font-jp);
  font-size: 13px;
  line-height: 2;
  letter-spacing: .04em;
  color: var(--color-sub);
  margin: 0;
  text-wrap: pretty;
  hanging-punctuation: first allow-end last;
}

/* ---------- Before / After ---------- */
.blog-article__ba-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 900px;
  margin-inline: auto;
}
.blog-article__ba-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  padding: 20px 0;
  border-top: 1px solid var(--color-line);
}
.blog-article__ba-row:last-child { border-bottom: 1px solid var(--color-line); }
.blog-article__ba-tag {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .24em;
  text-transform: uppercase;
  margin: 0 0 6px;
}
.blog-article__ba-before .blog-article__ba-tag { color: var(--color-mute); }
.blog-article__ba-after .blog-article__ba-tag { color: var(--color-iki); }
.blog-article__ba-text {
  font-family: var(--font-jp);
  font-size: clamp(14px, 1.6vw, 17px);
  font-weight: 500;
  line-height: 1.75;
  letter-spacing: .02em;
  margin: 0;
}
.blog-article__ba-before .blog-article__ba-text { color: var(--color-mute); }
.blog-article__ba-after .blog-article__ba-text {
  color: var(--color-ink);
  font-weight: 700;
}
.blog-article__ba-arrow {
  font-family: var(--font-en);
  font-size: 24px;
  font-weight: 400;
  color: var(--color-iki);
  line-height: 1;
}
@media (max-width: 640px) {
  .blog-article__ba-row {
    grid-template-columns: 1fr;
    gap: 12px;
    text-align: center;
  }
  .blog-article__ba-arrow {
    transform: rotate(90deg);
    justify-self: center;
  }
}

/* ---------- FAQ ---------- */
.blog-article__faq {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-line);
}
.blog-article__faq-item {
  border-bottom: 1px solid var(--color-line);
}
.blog-article__faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 8px;
  transition: background .15s;
}
.blog-article__faq-item summary::-webkit-details-marker { display: none; }
.blog-article__faq-item summary:hover { background: var(--paper-2); }
.blog-article__faq-q {
  font-family: var(--font-jp);
  font-size: clamp(15px, 1.5vw, 17px);
  font-weight: 700;
  letter-spacing: .015em;
  color: var(--color-ink);
  line-height: 1.6;
  padding-left: 32px;
  position: relative;
}
.blog-article__faq-q::before {
  content: "Q";
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-serif-numeric);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-iki);
  line-height: 1.6;
}
.blog-article__faq-plus {
  font-family: var(--font-en);
  font-size: 22px;
  font-weight: 300;
  color: var(--color-iki);
  line-height: 1;
  transition: transform .2s;
  flex-shrink: 0;
}
.blog-article__faq-item[open] .blog-article__faq-plus { transform: rotate(45deg); }
.blog-article__faq-a {
  padding: 0 8px 24px 40px;
  position: relative;
}
.blog-article__faq-a::before {
  content: "A";
  position: absolute;
  left: 8px;
  top: 0;
  font-family: var(--font-serif-numeric);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
}
.blog-article__faq-a p {
  font-family: var(--font-jp);
  font-size: 14px;
  line-height: 2;
  letter-spacing: .04em;
  color: var(--color-sub);
  margin: 0;
  text-wrap: pretty;
  hanging-punctuation: first allow-end last;
}
.blog-article__faq-a .numeric {
  font-family: var(--font-serif-numeric);
  font-weight: 700;
  color: var(--color-ink);
  font-variant-numeric: tabular-nums lining-nums;
  margin: 0 2px;
}

/* ---------- CTA ---------- */
.blog-article__cta-section {
  background: var(--color-ink);
  color: #fff;
  padding-block: clamp(80px, 10vw, 140px);
}
.blog-article__cta {
  max-width: 720px;
  margin-inline: auto;
  text-align: center;
}
.blog-article__cta .eyebrow-en {
  color: var(--color-iki);
  margin-bottom: 24px;
}
.blog-article__cta-title {
  font-family: var(--font-jp-mincho);
  font-size: clamp(24px, 3.2vw, 38px);
  font-weight: 900;
  line-height: 1.4;
  letter-spacing: .015em;
  color: #fff;
  margin: 0 0 20px;
  text-wrap: balance;
}
.blog-article__cta-lead {
  font-family: var(--font-jp);
  font-size: 15px;
  line-height: 1.85;
  letter-spacing: .04em;
  color: rgba(255, 255, 255, .78);
  margin: 0 0 40px;
  text-wrap: pretty;
}
.blog-article__cta-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}
.blog-article__cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 32px;
  border-radius: 999px;
  font-family: var(--font-jp);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  text-decoration: none;
  transition: all .18s cubic-bezier(.2, .8, .2, 1);
  min-width: 280px;
}
.blog-article__cta-btn--primary {
  background: #fff;
  color: var(--color-ink);
}
.blog-article__cta-btn--primary:hover {
  background: var(--color-iki);
  transform: translateY(-1px);
}
.blog-article__cta-btn--ghost {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .3);
}
.blog-article__cta-btn--ghost:hover {
  border-color: rgba(255, 255, 255, .7);
  background: rgba(255, 255, 255, .06);
}
.blog-article__cta-btn--text {
  background: transparent;
  color: var(--color-iki);
  font-weight: 500;
  padding: 10px 20px;
  min-width: 0;
}
.blog-article__cta-btn--text:hover {
  color: #fff;
}

/* ---------- Author bio / Related ---------- */
.blog-article__footer {
  padding-block: clamp(64px, 8vw, 112px);
  background: var(--paper);
}
.blog-article__author-bio {
  max-width: 720px;
  margin-inline: auto;
  padding: clamp(32px, 4vw, 48px);
  border: 1px solid var(--color-line);
  border-radius: 20px;
  background: var(--paper-2);
  margin-bottom: 48px;
}
.blog-article__author-bio .eyebrow-en {
  margin-bottom: 16px;
}
.blog-article__author-name {
  font-family: var(--font-jp-mincho);
  font-size: clamp(22px, 2.6vw, 28px);
  font-weight: 900;
  line-height: 1.4;
  letter-spacing: .04em;
  margin: 0 0 6px;
  display: flex;
  gap: 12px;
  align-items: baseline;
}
.blog-article__author-role {
  font-family: var(--font-jp);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--color-sub);
  margin: 0 0 20px;
}
.blog-article__author-role span[lang="en"] {
  font-family: var(--font-en);
  font-size: 11px;
  color: var(--color-mute);
}
.blog-article__author-text {
  font-family: var(--font-jp);
  font-size: 13px;
  line-height: 2;
  letter-spacing: .04em;
  color: var(--color-sub);
  margin: 0 0 20px;
  text-wrap: pretty;
}
.blog-article__author-links {
  margin: 0;
  font-size: 13px;
}

.blog-article__related {
  max-width: 720px;
  margin-inline: auto;
}
.blog-article__related .eyebrow-en {
  margin-bottom: 16px;
}
.blog-article__related-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
@media (max-width: 640px) {
  .blog-article__related-list { grid-template-columns: 1fr; }
}
.blog-article__related-list li a {
  display: block;
  padding: 16px 20px;
  border: 1px solid var(--color-line);
  border-radius: 12px;
  font-family: var(--font-jp);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-ink);
  text-decoration: none;
  transition: all .15s;
}
.blog-article__related-list li a:hover {
  border-color: var(--color-ink);
  transform: translateY(-1px);
}

/* ---------- Footer (simplified) ---------- */
.site-footer__grid--simple {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-line);
}
.site-footer__grid--simple nav ul {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-footer__grid--simple nav a {
  font-family: var(--font-jp);
  font-size: 13px;
  color: var(--color-sub);
  text-decoration: none;
  transition: color .15s;
}
.site-footer__grid--simple nav a:hover { color: var(--color-ink); }
.site-footer__copy {
  padding-top: 20px;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--color-mute);
  margin: 0;
  text-align: center;
}

/* ---------- Blog index list (for /blog/) ---------- */
.blog-index {
  padding-block: clamp(72px, 10vw, 120px);
  background: var(--paper);
}
.blog-index__head {
  max-width: 720px;
  margin-inline: auto;
  text-align: center;
  margin-bottom: clamp(56px, 8vw, 96px);
}
.blog-index__title {
  font-family: var(--font-jp-mincho);
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 900;
  line-height: 1.35;
  letter-spacing: .015em;
  margin: 16px 0 20px;
  text-wrap: balance;
  color: var(--color-ink);
}
.blog-index__lead {
  font-family: var(--font-jp);
  font-size: 15px;
  line-height: 1.95;
  letter-spacing: .04em;
  color: var(--color-sub);
  margin: 0;
  max-width: 44ch;
  margin-inline: auto;
  text-wrap: pretty;
}
.blog-index__list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-width: 900px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.blog-index__item {
  border-top: 1px solid var(--color-line);
  padding-top: 32px;
}
.blog-index__item a {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 32px;
  text-decoration: none;
  color: inherit;
  padding: 12px 0;
}
@media (max-width: 640px) {
  .blog-index__item a { grid-template-columns: 1fr; gap: 12px; }
}
.blog-index__item-numeral {
  font-family: var(--font-serif-numeric);
  font-size: clamp(48px, 6vw, 88px);
  font-weight: 900;
  line-height: 0.9;
  color: var(--color-iki);
  font-variant-numeric: tabular-nums lining-nums;
}
@supports (-webkit-text-stroke: 1px black) {
  .blog-index__item-numeral {
    -webkit-text-stroke: 1.5px var(--color-iki);
    color: transparent;
    -webkit-text-fill-color: transparent;
  }
}
.blog-index__item-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.blog-index__item-tag {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--color-mute);
}
.blog-index__item-title {
  font-family: var(--font-jp-mincho);
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 900;
  line-height: 1.5;
  letter-spacing: .015em;
  color: var(--color-ink);
  margin: 4px 0 8px;
  text-wrap: balance;
  transition: color .15s;
}
.blog-index__item a:hover .blog-index__item-title { color: var(--color-iki); }
.blog-index__item-excerpt {
  font-family: var(--font-jp);
  font-size: 13px;
  line-height: 1.85;
  color: var(--color-sub);
  margin: 0;
  text-wrap: pretty;
}
.blog-index__item-meta {
  display: flex;
  gap: 20px;
  font-family: var(--font-en);
  font-size: 11px;
  color: var(--color-mute);
  margin-top: 12px;
  letter-spacing: .1em;
}
.blog-index__item-meta .numeric {
  font-family: var(--font-serif-numeric);
  font-weight: 500;
  color: var(--color-sub);
  font-variant-numeric: tabular-nums lining-nums;
}