/* =========================================================
   OTONO TSUSHIN — Article (News detail)
   Editorial typography + related articles + fixed CTA banner
   ========================================================= */

.article {
  position: relative;
  z-index: 2;
  padding: calc(var(--header-h) + 48px) var(--pad-x) 120px;
  max-width: 920px;
  margin: 0 auto;
}

/* ---------- Breadcrumb ---------- */
.article__crumbs {
  display: flex; align-items: center; flex-wrap: wrap;
  gap: 12px;
  font-family: var(--font-en);
  font-size: 10.5px; letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 40px;
}
.article__crumbs a { color: var(--ink-soft); transition: color .3s; }
.article__crumbs a:hover { color: var(--cyan); }
.article__crumbs em {
  color: var(--cyan);
  font-style: normal;
  font-family: var(--font-jp);
  letter-spacing: .08em;
  text-transform: none;
  font-size: 12px;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.article__crumbs i {
  display: inline-block; width: 16px; height: 1px;
  background: var(--line);
}

/* ---------- Header ---------- */
.article__header {
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 48px;
}
.article__meta {
  display: flex; align-items: center; gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.article__dates {
  display: flex; gap: 18px; align-items: baseline;
  flex-wrap: wrap;
}
.article__date {
  font-family: var(--font-en);
  font-size: 11px; letter-spacing: .25em;
  color: var(--cyan);
}
.article__date--updated { color: var(--ink-mute); }

.article__cat {
  font-family: var(--font-en);
  font-size: 10px; letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--cyan);
  padding: 6px 14px;
  border: 1px solid var(--cyan);
  background: rgba(122, 219, 255, .05);
}
/* Category color variants */
.article__cat--info       { color: var(--ink); border-color: var(--ink-soft); background: rgba(255,255,255,.03); }
.article__cat--case       { color: #95eac3; border-color: #95eac3; background: rgba(149,234,195,.05); }
.article__cat--campaign   { color: var(--cyan); border-color: var(--cyan); }
.article__cat--career     { color: #f0c879; border-color: #f0c879; background: rgba(240,200,121,.05); }
.article__cat--column     { color: #c9a8f0; border-color: #c9a8f0; background: rgba(201,168,240,.05); }

.article__title {
  font-family: var(--font-min);
  font-size: clamp(26px, 3.6vw, 44px);
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: .04em;
  margin: 0 0 28px;
  color: var(--ink);
  text-wrap: pretty;
}

.article__share {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-en);
  font-size: 10px; letter-spacing: .3em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.article__share-label { margin-right: 6px; }
.article__share a {
  width: 36px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--ink-soft);
  transition: color .3s, border-color .3s, transform .3s;
}
.article__share a:hover {
  color: var(--cyan);
  border-color: var(--cyan);
  transform: translateY(-2px);
}

/* ---------- Eyecatch ---------- */
.article__eyecatch {
  margin: 0 0 56px;
}
.article__eyecatch-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  aspect-ratio: 1200 / 630;
}
.article__eyecatch-frame svg,
.article__eyecatch-frame .article__eyecatch-img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}
.article__eyecatch figcaption {
  margin-top: 12px;
  font-family: var(--font-en);
  font-size: 10px; letter-spacing: .25em;
  color: var(--ink-mute);
  text-align: right;
  text-transform: uppercase;
}

/* ---------- Body ---------- */
.article__body {
  font-family: var(--font-jp);
  color: var(--ink);
  font-size: 15.5px;
  line-height: 2.05;
}

.article__intro {
  font-family: var(--font-jp);
  font-size: 16px;
  line-height: 2.15;
  color: var(--ink);
  margin: 0 0 56px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
  text-wrap: pretty;
}

.article__body h2 {
  font-family: var(--font-min);
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--ink);
  margin: 56px 0 24px;
  padding-left: 18px;
  border-left: 2px solid var(--cyan);
  line-height: 1.5;
}
.article__body h2:first-of-type { margin-top: 0; }

.article__body h3 {
  font-family: var(--font-min);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--ink);
  margin: 36px 0 14px;
  line-height: 1.6;
}

.article__body p {
  margin: 0 0 1.6em;
  color: var(--ink-soft);
  text-wrap: pretty;
}
.article__body p em {
  color: var(--cyan);
  font-style: normal;
  font-weight: 500;
}

.article__body ul,
.article__body ol {
  margin: 0 0 1.8em;
  padding-left: 0;
  list-style: none;
  color: var(--ink-soft);
}
.article__body ul li,
.article__body ol li {
  position: relative;
  padding-left: 26px;
  margin: 0 0 .8em;
  line-height: 1.95;
}
.article__body ul li::before {
  content: "";
  position: absolute;
  left: 2px; top: .9em;
  width: 14px; height: 1px;
  background: var(--cyan);
}
.article__body ol {
  counter-reset: alist;
}
.article__body ol li {
  counter-increment: alist;
  padding-left: 38px;
}
.article__body ol li::before {
  content: counter(alist, decimal-leading-zero);
  position: absolute;
  left: 0; top: 2px;
  font-family: var(--font-en);
  font-size: 11px; letter-spacing: .2em;
  color: var(--cyan);
}

.article__steps li {
  padding: 14px 0 14px 38px;
  border-bottom: 1px dashed var(--line);
}
.article__steps strong {
  display: block;
  font-family: var(--font-jp);
  color: var(--ink);
  font-size: 15px;
  letter-spacing: .04em;
  margin-bottom: 4px;
  font-weight: 500;
}
.article__steps li::before { top: 18px; }

.article__notes li {
  padding-left: 26px;
  margin: 0 0 .6em;
  font-size: 13.5px;
}
.article__notes li::before {
  content: "※";
  background: none;
  width: auto; height: auto;
  top: 0;
  color: var(--cyan);
}

/* callout */
.callout {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  padding: 22px 26px;
  margin: 32px 0;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(122,219,255,.05), transparent 60%);
  position: relative;
}
.callout::before {
  content: ""; position: absolute;
  top: 0; left: 0; bottom: 0; width: 2px;
  background: var(--cyan);
}
.callout__label {
  font-family: var(--font-en);
  font-size: 10px; letter-spacing: .35em;
  color: var(--cyan);
  text-transform: uppercase;
  padding-top: 4px;
  align-self: start;
}
.callout p {
  margin: 0;
  font-family: var(--font-jp);
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--ink);
  letter-spacing: .04em;
}

/* quote */
.article__quote {
  position: relative;
  margin: 48px 0;
  padding: 24px 28px 24px 64px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.article__quote span {
  position: absolute;
  left: 14px; top: 8px;
  font-family: var(--font-min);
  font-size: 60px;
  line-height: 1;
  color: var(--cyan);
}
.article__quote p {
  margin: 0;
  font-family: var(--font-min);
  font-size: clamp(17px, 1.7vw, 20px);
  line-height: 1.9;
  letter-spacing: .04em;
  color: var(--ink);
}

/* tags */
.article__tags {
  display: flex; flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.article__tags-label {
  font-family: var(--font-en);
  font-size: 10px; letter-spacing: .3em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-right: 6px;
}
.article__tags a {
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--ink-soft);
  padding: 6px 12px;
  border: 1px solid var(--line);
  transition: border-color .3s, color .3s;
}
.article__tags a:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- Prev/Next ---------- */
.article__pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: 64px;
}
@media (max-width: 720px) {
  .article__pager { grid-template-columns: 1fr; }
}
.article__pager a {
  background: rgba(4,7,13,0.7);
  padding: 22px 24px;
  display: flex; align-items: center; gap: 18px;
  transition: background .4s;
}
.article__pager a:hover { background: rgba(122,219,255,0.05); }
.article__pager-next { justify-content: flex-end; text-align: right; }
.article__pager-arrow {
  font-family: var(--font-en);
  font-size: 18px;
  color: var(--cyan);
  transition: transform .3s var(--ease-out);
  flex-shrink: 0;
}
.article__pager-prev:hover .article__pager-arrow { transform: translateX(-6px); }
.article__pager-next:hover .article__pager-arrow { transform: translateX(6px); }
.article__pager small {
  display: block;
  font-family: var(--font-en);
  font-size: 9.5px; letter-spacing: .3em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.article__pager strong {
  font-family: var(--font-min);
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
  font-weight: 500;
  letter-spacing: .04em;
}

/* ---------- Related articles ---------- */
.article__related {
  margin-top: 80px;
  padding-top: 56px;
  border-top: 1px solid var(--line);
}
.article__related-head { margin-bottom: 36px; }
.article__related-label {
  font-family: var(--font-en);
  font-size: 10.5px; letter-spacing: .35em;
  color: var(--cyan);
  text-transform: uppercase;
  margin: 0 0 12px;
}
.article__related-title {
  font-family: var(--font-min);
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: 500;
  letter-spacing: .04em;
  margin: 0;
  color: var(--ink);
}
.article__related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 880px) { .article__related-grid { grid-template-columns: 1fr; } }

.related-card {
  display: flex; flex-direction: column;
  background: rgba(4,7,13,0.7);
  border: 1px solid var(--line);
  transition: border-color .4s, transform .4s var(--ease-out);
}
.related-card:hover {
  border-color: var(--cyan);
  transform: translateY(-4px);
}
.related-card__thumb {
  overflow: hidden;
  aspect-ratio: 5 / 3;
  position: relative;
}
.related-card__thumb svg { width: 100%; height: 100%; transition: transform .8s var(--ease-out); }
.related-card:hover .related-card__thumb svg { transform: scale(1.06); }

.related-card__body {
  padding: 20px 22px 22px;
  display: flex; flex-direction: column; gap: 8px;
}
.related-card__cat {
  font-family: var(--font-en);
  font-size: 9.5px; letter-spacing: .3em;
  color: var(--cyan);
  text-transform: uppercase;
}
.related-card__date {
  font-family: var(--font-en);
  font-size: 10.5px; letter-spacing: .2em;
  color: var(--ink-mute);
}
.related-card__title {
  font-family: var(--font-min);
  font-size: 15px;
  line-height: 1.55;
  letter-spacing: .04em;
  margin: 4px 0 0;
  color: var(--ink);
  font-weight: 500;
}

/* ---------- Back link ---------- */
.article__back {
  display: inline-flex; align-items: center; gap: 14px;
  margin-top: 64px;
  padding: 16px 26px;
  border: 1px solid var(--line);
  font-family: var(--font-en);
  font-size: 11px; letter-spacing: .3em;
  color: var(--ink-soft);
  text-transform: uppercase;
  transition: border-color .3s, color .3s, background .3s;
}
.article__back:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(122,219,255,.04);
}

/* ---------- Fixed CTA banner ---------- */
.cta-banner {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 80;
  padding: 16px var(--pad-x);
  background: rgba(4,7,13,.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--cyan-deep);
  transform: translateY(100%);
  transition: transform .6s var(--ease-out);
  box-shadow: 0 -8px 40px rgba(0,0,0,.4);
}
.cta-banner.is-shown { transform: translateY(0); }
.cta-banner__inner {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
}
.cta-banner__text { display: flex; flex-direction: column; gap: 4px; }
.cta-banner__head {
  font-family: var(--font-min);
  font-size: clamp(14px, 1.4vw, 18px);
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--ink);
  margin: 0;
}
.cta-banner__sub {
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--ink-mute);
  margin: 0;
}
.cta-banner__actions {
  display: flex; align-items: center; gap: 16px;
}
.cta-banner__tel {
  display: inline-flex; flex-direction: column; align-items: flex-end;
  gap: 0;
  color: var(--ink);
  transition: color .3s;
}
.cta-banner__tel:hover { color: var(--cyan); }
.cta-banner__tel-label {
  font-family: var(--font-en);
  font-size: 9px; letter-spacing: .35em;
  color: var(--cyan);
  text-transform: uppercase;
}
.cta-banner__tel-num {
  font-family: var(--font-en);
  font-size: clamp(16px, 1.6vw, 20px);
  letter-spacing: .04em;
  font-weight: 500;
}
.cta-banner__btn {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 14px 24px;
  border: 1px solid var(--cyan);
  border-radius: 999px;
  font-family: var(--font-en);
  font-size: 11px; letter-spacing: .25em;
  color: var(--ink);
  text-transform: uppercase;
  background: var(--cyan-deep);
  transition: background .3s, color .3s;
}
.cta-banner__btn:hover { background: var(--cyan); color: var(--bg); }
.cta-banner__btn svg { transition: transform .3s var(--ease-out); }
.cta-banner__btn:hover svg { transform: translateX(4px); }

/* leave room for CTA bar above footer */
.site-footer { padding-bottom: 100px; }

@media (max-width: 720px) {
  .cta-banner { padding: 12px var(--pad-x); }
  .cta-banner__inner { grid-template-columns: 1fr; gap: 10px; }
  .cta-banner__text { display: none; }
  .cta-banner__actions { justify-content: space-between; width: 100%; }
  .cta-banner__tel { align-items: flex-start; }
  .cta-banner__btn { padding: 12px 20px; font-size: 10.5px; }
}

/* ---------- Small screen tweaks ---------- */
@media (max-width: 720px) {
  .article { padding: calc(var(--header-h) + 24px) var(--pad-x) 60px; }
  .article__crumbs { font-size: 9.5px; gap: 8px; margin-bottom: 24px; }
  .article__crumbs i { width: 10px; }
  .article__crumbs em { font-size: 11px; }
  .article__header { margin-bottom: 32px; padding-bottom: 24px; }
  .article__meta { gap: 12px; margin-bottom: 18px; }
  .article__dates { gap: 12px; }
  .article__title { font-size: clamp(20px, 6vw, 28px); margin-bottom: 22px; }
  .article__eyecatch { margin-bottom: 36px; }
  .article__eyecatch-frame { aspect-ratio: 4 / 3; }
  .article__intro { font-size: 14.5px; padding-bottom: 24px; margin-bottom: 36px; }
  .article__body { font-size: 14px; line-height: 1.95; }
  .article__body h2 { font-size: 17px; margin: 40px 0 16px; padding-left: 14px; }
  .article__body h3 { font-size: 15px; margin-top: 28px; }
  .callout { padding: 16px 18px; gap: 12px; margin: 24px 0; }
  .callout p { font-size: 13.5px; }
  .article__quote { padding: 18px 18px 18px 48px; margin: 32px 0; }
  .article__quote span { font-size: 44px; }
  .article__pager a { padding: 16px; gap: 10px; }
  .article__pager strong { font-size: 12.5px; }
  .article__related { margin-top: 56px; padding-top: 36px; }
  .article__back { padding: 14px 18px; font-size: 10.5px; }
}

@media (max-width: 480px) {
  .article { padding: calc(var(--header-h) + 16px) 16px 48px; }
  .article__crumbs { font-size: 8.5px; gap: 6px; margin-bottom: 20px; }
  .article__crumbs i { width: 8px; }
  .article__crumbs em { font-size: 10.5px; }
  .article__header { margin-bottom: 28px; padding-bottom: 20px; }
  .article__meta { gap: 10px; margin-bottom: 14px; }
  .article__dates { gap: 10px; flex-direction: column; align-items: flex-start; }
  .article__date { font-size: 10.5px; letter-spacing: .2em; }
  .article__cat { font-size: 9px; letter-spacing: .25em; padding: 5px 10px; }
  .article__title { font-size: clamp(18px, 6.5vw, 24px); margin-bottom: 18px; letter-spacing: .03em; }
  .article__share { gap: 8px; font-size: 9px; letter-spacing: .22em; }
  .article__share a { width: 30px; height: 30px; }
  .article__eyecatch { margin-bottom: 28px; }
  .article__eyecatch-frame { aspect-ratio: 16 / 11; }
  .article__eyecatch figcaption { font-size: 9px; letter-spacing: .2em; }

  .article__intro { font-size: 13.5px; line-height: 1.95; padding-bottom: 20px; margin-bottom: 28px; }
  .article__body { font-size: 13px; line-height: 1.9; }
  .article__body p { margin-bottom: 1.4em; }
  .article__body h2 { font-size: 15.5px; margin: 32px 0 14px; padding-left: 12px; border-left-width: 2px; }
  .article__body h3 { font-size: 14px; margin-top: 24px; }
  .article__body ul li, .article__body ol li { padding-left: 22px; }
  .article__steps li { padding: 12px 0 12px 32px; }
  .article__steps strong { font-size: 13.5px; }
  .article__notes li { font-size: 12px; padding-left: 20px; }
  .callout { padding: 14px 16px; gap: 10px; margin: 20px 0; grid-template-columns: 1fr; }
  .callout__label { padding-top: 0; }
  .callout p { font-size: 12.5px; }
  .article__quote { padding: 16px 16px 16px 44px; margin: 28px 0; }
  .article__quote span { font-size: 38px; left: 12px; top: 6px; }
  .article__quote p { font-size: 15px; line-height: 1.8; }
  .article__tags { margin-top: 36px; padding-top: 24px; gap: 8px; }
  .article__tags-label { font-size: 9px; letter-spacing: .22em; }
  .article__tags a { font-size: 11px; padding: 5px 10px; }

  .article__pager { margin-top: 48px; }
  .article__pager a { padding: 14px; gap: 8px; }
  .article__pager small { font-size: 8.5px; letter-spacing: .22em; }
  .article__pager strong { font-size: 12px; line-height: 1.5; }
  .article__pager-arrow { font-size: 16px; }

  .article__related { margin-top: 48px; padding-top: 32px; }
  .article__related-head { margin-bottom: 24px; }
  .article__related-label { font-size: 9px; letter-spacing: .25em; }
  .article__related-title { font-size: 17px; }
  .article__related-grid { grid-template-columns: 1fr; gap: 18px; }
  .related-card__body { padding: 16px 18px 18px; gap: 6px; }
  .related-card__cat { font-size: 8.5px; letter-spacing: .22em; }
  .related-card__date { font-size: 9.5px; letter-spacing: .15em; }
  .related-card__title { font-size: 14px; line-height: 1.55; }

  .article__back { margin-top: 48px; padding: 12px 18px; font-size: 9.5px; letter-spacing: .22em; gap: 10px; }

  .cta-banner { padding: 10px 12px; }
  .cta-banner__btn { padding: 10px 16px; font-size: 9.5px; letter-spacing: .2em; gap: 8px; }
  .cta-banner__tel-num { font-size: 14px; }
  .cta-banner__tel-label { font-size: 8.5px; letter-spacing: .25em; }
  .site-footer { padding-bottom: 80px; }
}