/* ==========================================================================
   ODAKE 100TH — history.html page-specific styles
   Canvas: 1680px (= 168rem, root font-size 10px)
   ========================================================================== */

/* ---------- Page hero ---------- */
.history-hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  padding-top: 10rem;
  padding-bottom: 6.2rem;
  color: var(--color-text-invert);
  overflow: hidden;
  will-change: opacity;
}

.history-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url(../images/history/bg_mv.webp) center top / cover no-repeat;
  background-size: 240rem;
  z-index: 0;
  pointer-events: none;
}

.history-hero__strip {
  position: relative;
  width: 100%;
  height: 30.8rem;
  overflow: hidden;
  z-index: -1;
}

.history-hero__strip-track {
  display: flex;
  width: max-content;
  height: 100%;
  animation: history-hero-scroll 60s linear infinite;
}

.history-hero__strip-img {
  height: 100%;
  width: auto;
  display: block;
  flex-shrink: 0;
}

@keyframes history-hero-scroll {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(-50%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .history-hero__strip-track {
    animation: none;
  }
}

.history-hero__inner {
  position: relative;
  z-index: 1;
  margin: 0 auto;
  margin-top: 1rem;
  padding: 0 9.6rem;
  text-align: center;
}

.history-hero__title {}

.history-hero__title img {
  display: block;
  margin: 0 auto;
  width: 100%;
  max-width: 97.4rem;
  height: auto;
}

.history-hero__lead {
  margin-top: 4rem;
  font-size: 2rem;
  font-weight: 500;
  line-height: 2;
  letter-spacing: 0.06em;
}

/* ---------- Timeline ---------- */
.history-timeline {
  position: relative;
  z-index: 2;
  background: #ffffff;
  overflow: hidden;
  opacity: 0;
  will-change: opacity;
}

.history-timeline::before {
  content: "";
  position: absolute;
  top: -4.8rem;
  left: 0;
  width: 100%;
  aspect-ratio: 2400 / 211;
  background: url(../images/history/bg_history_line_top.png) center top / 100% 100% no-repeat;
  pointer-events: none;
  z-index: 1;
}

@media (prefers-reduced-motion: reduce) {
  .history-timeline {
    opacity: 1;
  }
}

.history-timeline__river {
  position: absolute;
  top: 0;
  left: 13rem;
  width: 41.8rem;
}

.history-timeline__river img {
  width: 100%;
  height: 100%;
  object-fit: fill;
  display: block;
}

.history-timeline__inner {
  position: relative;
  z-index: 1;
  margin: 0 auto;
  padding: 0 17rem 0 10rem;
}

.history-timeline__bg-sp {
  display: none;
}

/* ---------- Era block ---------- */
.history-era {
  position: relative;
  padding-block: 6rem 9.6rem;
}

.history-era__head {
  display: flex;
  align-items: flex-start;
  margin-bottom: 3.2rem;
}

.history-era__year {
  font-family: var(--font-en);
  font-size: 4.4rem;
  font-weight: 300;
  letter-spacing: 0.04em;
  color: var(--color-primary-dark);
  line-height: 1;
  min-width: 16rem;
}

.history-era__year img {
  display: block;
  height: 8.1rem;
  width: auto;
}

.history-era__line {
  position: relative;
  width: 13.1rem;
  height: 2px;
  background: var(--color-primary-dark);
  flex-shrink: 0;
  margin-top: 4.3rem;
  z-index: -1;
}

.history-era__text {
  margin-top: 1rem;
  padding-left: 3.8rem;
}

.history-era__title {
  font-family: var(--font-ja);
  font-size: 3.6rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--color-primary-dark);
  line-height: 1.2;
  margin-bottom: 3.2rem;
}

.history-era__title img {
  display: block;
  height: 6.8rem;
  width: auto;
}

.history-era__lead {
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.8;
  letter-spacing: 0.04em;
  color: #211f6e;
}

/* ---------- Era individual overrides (per year) ----------
   各年代ごとの個別調整用。必要に応じて余白・色・レイアウトを上書き。
   例: .history-era--1926 .history-topic__figure { ... }
----------------------------------------------------------- */
/* ===== 1926 創業期 ===== */
.history-era--1926 {
  padding-top: 14.4rem;
  padding-bottom: 12.3rem;
}

.history-era--1926 .history-era__head {
  margin-left: 22.6rem;
  margin-bottom: 14.1rem;
}

.history-era--1926 .history-era__line {
  left: -0.4rem;
}

.history-era--1926 .history-era__lead {}

.history-era--1926 .history-topic {
  width: 55.3rem;
  margin-left: auto;
  margin-right: 5.6rem;
}

.history-era--1926 .history-topic__figure01 {
  width: 53.4rem;
  top: 52rem;
  left: 1rem;
}

.history-era--1926 .history-topic__figure02 {
  width: 40.5rem;
  top: 97rem;
  left: 23rem;
}


/* ===== 1945.9 戦後復興期 ===== */
.history-era--1945-9 {
  padding-top: 0;
  padding-bottom: 12.1rem;
}

.history-era--1945-9 .history-era__head {
  margin-left: 4rem;
  margin-bottom: 14.1rem;
}

.history-era--1945-9 .history-era__line {
  left: -0.4rem;
}

.history-era--1945-9 .history-era__lead {}

.history-era--1945-9 .history-era__year img {
  height: 7.1rem;
}

.history-era--1945-9 .history-topic01 {
  width: 55.3rem;
  margin-left: auto;
  margin-right: 2.8rem;
}

.history-era--1945-9 .history-topic02 {
  width: 55.3rem;
  margin-top: 14rem;
  margin-left: auto;
  margin-right: 19rem;
}

.history-era--1945-9 .history-topic02 .history-topic__title img {
  height: 8.6rem;
}

.history-era--1945-9 .history-topic__figure {
  width: 47rem;
  top: 46.8rem;
  left: 21.5rem;
}


/* ===== 1965 事業拡大期 ===== */
.history-era--1965 {
  padding-block: 0 12rem;
}

.history-era--1965 .history-era__head {
  margin-left: 7.3rem;
  margin-bottom: 14.3rem;
}

.history-era--1965 .history-era__line {
  width: 16.4rem;
  left: -0.4rem;
}

.history-era--1965 .history-era__lead {}

.history-era--1965 .history-topic01 {
  width: 55.3rem;
  margin-top: 14rem;
  margin-left: auto;
  margin-right: 19rem;
}

.history-era--1965 .history-topic01 .history-topic__figure01 {
  width: 43rem;
  top: 42.6rem;
  left: 12rem;
}

.history-era--1965 .history-topic01 .history-topic__figure02 {
  width: 43.4rem;
  top: 69.4rem;
  left: 12.5rem;
}

.history-era--1965 .history-topic02 {
  width: 51.4rem;
  margin-top: 14rem;
  margin-left: auto;
  margin-right: 3rem;
}

.history-era--1965 .history-topic02 .history-topic__figure01 {
  width: 75rem;
  top: 116.4rem;
  left: 1rem;
}

.history-era--1965 .history-topic03 {
  width: 55.3rem;
  margin-top: 15rem;
  margin-left: auto;
  margin-right: 11rem;
}

.history-era--1965 .history-topic03 .history-topic__figure01 {
  width: 39.7rem;
  top: 231rem;
  left: 22rem;
}


/* ===== 1993 転換期 ===== */
.history-era--1993 {
  padding-block: 0;
}

.history-era--1993 .history-era__head {
  margin-left: 7.5rem;
  margin-bottom: 15.1rem;
}

.history-era--1993 .history-era__line {
  width: 25.9rem;
  left: -0.4rem;
}

.history-era--1993 .history-era__line {
  left: -0.4rem;
}

.history-era--1993 .history-era__lead {
  color: #3157a4;
}

.history-era--1993 .history-topic__body p {
  color: #3157a4;
}

.history-era--1993 .history-topic01 {
  width: 56.8rem;
  margin-top: 46.7rem;
  margin-left: auto;
  margin-right: 22.7rem;
}

.history-era--1993 .history-topic01 .history-topic__figure01 {
  width: 79.2rem;
  top: 42.6rem;
  left: 20.4rem;
}

.history-era--1993 .history-topic02 {
  width: 55.2rem;
  margin-top: 15.3rem;
  margin-left: auto;
  margin-right: 3rem;
}

.history-era--1993 .history-topic02 .history-topic__figure01 {
  width: 68.6rem;
  top: 150.6rem;
  left: 2rem;
}


/* ===== 2011 躍進期 ===== */
.history-era--2011 {
  padding-top: 11.7rem;
  padding-bottom: 30rem;
}

.history-era--2011 .history-era__head {
  margin-left: 9.2rem;
  margin-bottom: 15.1rem;
}

.history-era--2011 .history-era__line {
  width: 22rem;
  left: -0.4rem;
}

.history-era--2011 .history-era__lead {
  color: #487fbf;
}

.history-era--2011 .history-topic__body p {
  color: #487fbf;
}

.history-era--2011 .history-topic01 {
  width: 56.8rem;
  margin-top: 15.2rem;
  margin-left: auto;
  margin-right: 3rem;
}

.history-era--2011 .history-topic01 .history-topic__figure01 {
  width: 24rem;
  top: 60rem;
  left: 40rem;
}

.history-era--2011 .history-topic01 .history-topic__figure02 {
  width: 38.3rem;
  top: 93.6rem;
  left: 20.4rem;
}

/* ---------- Topic (sub-section) ---------- */
.history-topic {}

.history-topic--right {}

.history-topic--right .history-topic__figure {}

.history-topic--right .history-topic__body {}

.history-topic--text-only {}

.history-topic__figure {
  position: absolute;
  top: 0;
  left: 0;
}

.history-topic__figure--wide {}

.history-topic__figure img {}

.history-topic__body {}

.history-topic__title {
  margin-bottom: 4rem;
}

.history-topic__title img {
  height: 3.4rem;
}

.history-topic__body p {
  font-size: 1.8rem;
  font-weight: 600;
  color: #211f6e;
  line-height: 2;
  letter-spacing: 0.02em;
}

.history-topic__body p+p {
  margin-top: 4rem;
}

.history-topic__body p:last-child {}

/* ---------- Column accordion ---------- */
.history-column {
  width: 100%;
  margin: 6.4rem auto 0;
}

.history-column__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1.9rem 3.2rem;
  background: #d3dbe7;
  border: none;
  color: #211f6e;
  font-family: var(--font-ja);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.history-column__summary:hover {
}

.history-column__icon {
  position: relative;
  display: inline-block;
  width: 1.6rem;
  height: 0.9rem;
  flex-shrink: 0;
  transition: transform 0.35s ease;
}

.history-column__icon::before,
.history-column__icon::after {
  content: "";
  position: absolute;
  top: 0;
  width: 1.15rem;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
}

.history-column__icon::before {
  left: 0;
  transform: rotate(45deg);
  transform-origin: 0 50%;
}

.history-column__icon::after {
  right: 0;
  transform: rotate(-45deg);
  transform-origin: 100% 50%;
}

.history-column.is-open .history-column__icon {
  transform: rotate(180deg);
}

.history-column__content {
  padding: 0 3.2rem 3.2rem;
  font-size: 1.6rem;
  font-weight: 500;
  line-height: 2;
  letter-spacing: 0.05em;
  color: #211f6e;
  background: #d3dbe7;
  transition: opacity 0.35s ease, visibility 0s linear 0s;
}

.history-column:not(.is-open) .history-column__content {
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.35s ease, visibility 0s linear 0.35s;
}

.history-column__content p {
  margin: 0;
}

/* ---------- Footer override (light variant) ---------- */
/* .site-footer--light moved to style.css (shared across pages) */

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 768px) {

  /* ---------- Hero (SP) ---------- */
  .history-hero {
    position: relative;
    top: auto;
    padding: 0 0 6rem;
    overflow: hidden;
    background: none;
    z-index: auto;
    will-change: auto;
    min-height: auto;
  }

  .history-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: url(../images/history/bg_mv_sp.webp) center top no-repeat;
    background-size: 75rem auto;
    pointer-events: none;
  }

  .history-hero__strip {
    position: relative;
    height: 58.5rem;
    margin-top: 3.8rem;
  }

  .history-hero__strip-track {
    animation-duration: 40s;
  }

  .history-hero__strip-img {
    filter: brightness(0.8) saturate(0.8);
  }

  .history-hero__inner {
    position: relative;
    z-index: 3;
    margin-top: -9rem;
    padding: 0 4.6rem;
  }

  .history-hero__title img {
    width: 100%;
    max-width: 40.6rem;
  }

  .history-hero__lead {
    margin-top: 3.8rem;
    font-size: 3.2rem;
    line-height: 1.75;
    letter-spacing: 0.03em;
    text-align: justify;
  }

  .history-hero__lead br {
    display: none;
  }

  /* ---------- Timeline (SP) ---------- */
  .history-timeline {
    padding: 0;
    overflow: visible;
    opacity: 1;
  }

  .history-timeline::before {
    display: none;
  }

  .history-timeline__inner {
    padding: 0;
    overflow: hidden;
  }

  .history-timeline__bg-sp {
    display: block;
    position: absolute;
    left: 0;
    width: 100%;
    background-repeat: no-repeat;
    background-size: 100% 100%;
  }

  .history-timeline__bg-sp.history-timeline__bg-sp01 {
    top: 0;
    height: 500.05rem;
    background-image: url(../images/history/bg_history_line01_sp.webp);
  }

  .history-timeline__bg-sp.history-timeline__bg-sp02 {
    top: 500.05rem;
    height: 548.05rem;
    background-image: url(../images/history/bg_history_line02_sp.webp);
  }

  .history-timeline__bg-sp.history-timeline__bg-sp03 {
    top: 1048.1rem;
    height: 500.05rem;
    background-image: url(../images/history/bg_history_line03_sp.webp);
  }

  .history-timeline__bg-sp.history-timeline__bg-sp04 {
    top: 1548.15rem;
    bottom: 0;
    background-image: url(../images/history/bg_history_line04_sp.webp);
  }

  .history-timeline__river {
    display: none;
  }

  /* ---------- Era generic resets (SP) ---------- */
  .history-era {
    padding-block: 0;
    margin: 0 auto;
    width: 52rem;
  }

  .history-era__head {
    display: block;
    flex-wrap: initial;
    gap: 0;
    margin: 0;
  }

  .history-era__year {
  }

  .history-era__year img {
    display: block;
    width: auto;
    height: auto;
    margin: 0 auto;
  }

  .history-era__line {
    display: none;
  }

  .history-era__text {
    margin-top: 0;
    padding-left: 0;
  }

  .history-era__title img {
    width: auto;
    height: auto;
  }

  .history-era__lead {
    padding-left: 0;
    text-align: justify;
    margin-top: 5.6rem;
    font-size: 3.2rem;
    font-weight: 700;
    line-height: 1.75;
    letter-spacing: 0.01em;
  }

  .history-era__lead br {
    display: none;
  }

  .history-topic {
    position: static;
    width: 100%;
    margin: 0 !important;
  }

  .history-topic__figure {
    position: static;
    width: 100%;
    margin: 0 auto;
    top: auto;
    left: auto;
  }

  .history-topic__figure img {
    display: block;
    margin: 0 auto;
  }

  .history-topic__body {
    width: 100%;
  }

  .history-topic__title {
    margin-bottom: 4rem;
  }

  .history-topic__title img {
    width: auto;
    height: auto;
  }

  .history-topic__body p {
    font-size: 2.8rem;
    font-weight: 500;
    line-height: 1.75;
  }

  .history-topic__body p+p {
    margin-top: 4rem;
  }

  /* ---------- Column accordion (SP) ---------- */
  .history-column {
    width: 100%;
    max-width: none;
    margin: 7.2rem auto 0;
  }

  .history-column__summary {
    flex-direction: column;
    gap: 1.2rem;
    padding: 4.2rem 2rem 3rem;
    font-size: 3.2rem;
    letter-spacing: 0.08em;
  }

  .history-column__icon {
    width: 3.8rem;
    height: 1.4rem;
  }

  .history-column__icon::before,
  .history-column__icon::after {
    width: 2.7rem;
  }

  .history-column__content {
    display: grid;
    grid-template-rows: 1fr;
    padding: 0 3rem 6rem;
    font-size: 2.7rem;
    line-height: 1.67;
    visibility: visible;
    opacity: 1;
    transition: grid-template-rows 0.35s ease, padding 0.35s ease;
  }

  .history-column__content > p {
    overflow: hidden;
    min-height: 0;
  }

  .history-column:not(.is-open) .history-column__content {
    grid-template-rows: 0fr;
    padding-top: 0;
    padding-bottom: 0;
    visibility: visible;
    opacity: 1;
    transition: grid-template-rows 0.35s ease, padding 0.35s ease;
  }

  /* ========================================================================
     Era: 1926 創業期 (SP)
     ======================================================================== */
  .history-era--1926 {
    padding: 17.9rem 0;
  }

  .history-era--1926 .history-era__head {
    margin: 0 0 7.2rem;
  }

  .history-era--1926 .history-era__year img {
    width: 36rem;
    max-width: 100%;
  }

  /* Era title is embedded in txt_year_1926_sp.svg, hide separate title */
  .history-era--1926 .history-era__title {
    display: none;
  }

  .history-era--1926 .history-era__lead {
  }

  .history-era--1926 .history-topic {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6.5rem;
    width: 100%;
  }

  .history-era--1926 .history-topic__figure01 {
    order: 1;
    width: 100%;
    max-width: 52rem;
  }

  .history-era--1926 .history-topic__figure02 {
    order: 2;
    width: 100%;
    max-width: 42rem;
  }

  .history-era--1926 .history-topic__body {
    order: 3;
    margin-top: 3rem;
  }

  .history-era--1926 .history-topic__body .history-topic__title {
    text-align: center;
  }

  .history-era--1926 .history-topic__body .history-topic__title img {
    width: 42rem;
    max-width: 100%;
    margin: 0 auto;
  }

  .history-era--1926 .history-column {
    order: 4;
    margin-top: 1.5rem;
  }

  /* ========================================================================
     Era: 1945.9 戦後復興期 (SP)
     ======================================================================== */
  .history-era--1945-9 {
    padding: 0 0 18rem;
  }

  .history-era--1945-9 .history-era__head {
    margin: 0 0 8rem;
  }

  .history-era--1945-9 .history-era__year img {
    width: 48rem;
    max-width: 100%;
    height: auto;
  }

  /* Era title is embedded in txt_year_1945_9_sp.svg, hide separate title */
  .history-era--1945-9 .history-era__title {
    display: none;
  }

  .history-era--1945-9 .history-era__lead {
    letter-spacing: -0.045em;
  }

  .history-era--1945-9 .history-topic01 {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6.5rem;
  }

  .history-era--1945-9 .history-topic01 .history-topic__figure {
    order: 1;
    width: 100%;
    max-width: 42rem;
  }

  .history-era--1945-9 .history-topic01 .history-topic__body {
    order: 2;
    margin-top: 1.5rem;
  }

  .history-era--1945-9 .history-topic01 .history-topic__title {
    text-align: center;
    margin-bottom: 3.6rem;
  }

  .history-era--1945-9 .history-topic01 .history-topic__title img {
    width: 41.7rem;
    max-width: 100%;
    margin: 0 auto;
  }

  .history-era--1945-9 .history-topic02 {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 8rem !important;
  }

  .history-era--1945-9 .history-topic02 .history-topic__body {
    order: 1;
  }

  .history-era--1945-9 .history-topic02 .history-topic__title {
    text-align: center;
    margin-bottom: 3.6rem;
  }

  .history-era--1945-9 .history-topic02 .history-topic__title img {
    width: 44rem;
    max-width: 100%;
    margin: 0 auto;
  }

  .history-era--1945-9 .history-topic02 .history-column {
    order: 2;
  }

  /* ========================================================================
     Era: 1965 事業拡大期 (SP)
     ======================================================================== */
  .history-era--1965 {
    padding: 0 0 18rem;
  }

  .history-era--1965 .history-era__head {
    margin: 0 0 7.2rem;
  }

  .history-era--1965 .history-era__year img {
    width: 36rem;
    max-width: 100%;
    height: auto;
  }

  /* Era title is embedded in txt_year_1965_sp.svg, hide separate title */
  .history-era--1965 .history-era__title {
    display: none;
  }

  .history-era--1965 .history-era__lead {
  }

  /* topic01: photo1 → photo2 → title → body */
  .history-era--1965 .history-topic01 {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4rem;
    margin-top: 4rem;
  }

  .history-era--1965 .history-topic01 .history-topic__figure01 {
    width: 100%;
    max-width: 47.3rem;
  }

  .history-era--1965 .history-topic01 .history-topic__figure02 {
    width: 100%;
    max-width: 48rem;
  }

  .history-era--1965 .history-topic01 .history-topic__body {
    margin-top: 4rem;
  }

  .history-era--1965 .history-topic01 .history-topic__title {
    text-align: center;
    margin-bottom: 3.6rem;
  }

  .history-era--1965 .history-topic01 .history-topic__title img {
    width: 26.4rem;
    max-width: 100%;
    margin: 0 auto;
  }

  /* topic02: photo → title → body */
  .history-era--1965 .history-topic02 {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 7.2rem !important;
    width: 100%;
  }

  .history-era--1965 .history-topic02 .history-topic__figure01 {
    width: 100%;
    max-width: 52rem;
  }

  .history-era--1965 .history-topic02 .history-topic__body {
    margin-top: 8rem;
  }

  .history-era--1965 .history-topic02 .history-topic__title {
    text-align: center;
    margin-bottom: 3.6rem;
  }

  .history-era--1965 .history-topic02 .history-topic__title img {
    width: 37.2rem;
    max-width: 100%;
    margin: 0 auto;
  }

  /* topic03: photo → title → body → column */
  .history-era--1965 .history-topic03 {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 8rem !important;
  }

  .history-era--1965 .history-topic03 .history-topic__figure01 {
    width: 100%;
    max-width: 40rem;
  }

  .history-era--1965 .history-topic03 .history-topic__body {
    margin-top: 8rem;
  }

  .history-era--1965 .history-topic03 .history-topic__title {
    text-align: center;
    margin-bottom: 3.6rem;
  }

  .history-era--1965 .history-topic03 .history-topic__title img {
    width: 37.5rem;
    max-width: 100%;
    margin: 0 auto;
  }

  /* ========================================================================
     Era: 1993 転換期 (SP)
     ======================================================================== */
  .history-era--1993 {
    padding: 0 0 17.8rem;
  }

  .history-era--1993 .history-era__head {
    margin: 0 0 7.2rem;
  }

  .history-era--1993 .history-era__year img {
    width: 40rem;
    max-width: 100%;
    height: auto;
  }

  /* Era title is embedded in txt_year_1933_sp.svg (filename is a typo; content is 1993), hide separate title */
  .history-era--1993 .history-era__title {
    display: none;
  }

  .history-era--1993 .history-era__lead {
    
  }

  /* topic01: photo → title → body */
  .history-era--1993 .history-topic01 {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 4rem;
    width: 100%;
  }

  .history-era--1993 .history-topic01 .history-topic__figure01 {
    width: 100%;
    max-width: 52rem;
  }

  .history-era--1993 .history-topic01 .history-topic__body {
    margin-top: 8rem;
  }

  .history-era--1993 .history-topic01 .history-topic__title {
    text-align: center;
    margin-bottom: 3.6rem;
  }

  .history-era--1993 .history-topic01 .history-topic__title img {
    width: 52rem;
    max-width: 100%;
    margin: 0 auto;
  }

  /* topic02: photo → title → body → column */
  .history-era--1993 .history-topic02 {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 8rem !important;
    width: 100%;
  }

  .history-era--1993 .history-topic02 .history-topic__figure01 {
    width: 100%;
    max-width: 56rem;
  }

  .history-era--1993 .history-topic02 .history-topic__body {
    margin-top: 8rem;
  }

  .history-era--1993 .history-topic02 .history-topic__title {
    text-align: center;
    margin-bottom: 3.6rem;
  }

  .history-era--1993 .history-topic02 .history-topic__title img {
    width: 44rem;
    max-width: 100%;
    margin: 0 auto;
  }

  /* ========================================================================
     Era: 2011 躍進期 (SP)
     ======================================================================== */
  .history-era--2011 {
    padding: 0 0 18rem;
  }

  .history-era--2011 .history-era__head {
    margin: 0 0 7.2rem;
  }

  .history-era--2011 .history-era__year img {
    width: 36rem;
    max-width: 100%;
    height: auto;
  }

  /* Era title is embedded in txt_year_2011_sp.svg, hide separate title */
  .history-era--2011 .history-era__title {
    display: none;
  }

  .history-era--2011 .history-era__lead {
  }

  /* topic01: photo01 → photo02 → title → body → column */
  .history-era--2011 .history-topic01 {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: auto;
    margin: 4rem 0 0;
  }

  .history-era--2011 .history-topic01 .history-topic__figure01 {
    position: static;
    top: auto;
    left: auto;
    width: 100%;
    max-width: 24rem;
  }

  .history-era--2011 .history-topic01 .history-topic__figure02 {
    position: static;
    top: auto;
    left: auto;
    width: 100%;
    max-width: 38.4rem;
    margin-top: 4rem;
  }

  .history-era--2011 .history-topic01 .history-topic__body {
    margin-top: 8rem;
  }

  .history-era--2011 .history-topic01 .history-topic__title {
    text-align: center;
    margin-bottom: 3.6rem;
  }

  .history-era--2011 .history-topic01 .history-topic__title img {
    width: 47.2rem;
    max-width: 100%;
    margin: 0 auto;
  }
}