.page-about {
  --about-gold: var(--c-gold);
  --about-red: var(--c-red);
  --about-crimson: var(--c-crimson);
  --about-darkest: #0d0d0f;
  --about-line: rgba(245, 197, 24, .28);
  --about-shadow: 0 18px 40px rgba(0, 0, 0, .55);
  --about-shadow-soft: 0 8px 22px rgba(0, 0, 0, .35);
  --about-radius: 18px;
  color: var(--c-off-white);
  background: var(--c-dark);
  overflow-x: hidden;
}

.page-about .breadcrumbs {
  max-width: var(--container);
  margin: 0 auto;
  padding: calc(var(--space-sm) + .25rem) var(--edge) 0;
  font-size: .8rem;
  letter-spacing: .08em;
  color: var(--c-muted);
  display: flex;
  gap: .5rem;
  align-items: center;
}

.page-about .breadcrumbs a {
  color: var(--c-muted);
  text-decoration: none;
  transition: color .25s ease;
}

.page-about .breadcrumbs a:hover {
  color: var(--c-gold);
}

.page-about .hero-about {
  position: relative;
  padding: var(--space-xl) var(--edge) var(--space-lg);
  background:
    linear-gradient(135deg, rgba(139, 0, 0, .5) 0%, rgba(26, 26, 29, .92) 46%, rgba(26, 26, 29, 1) 100%),
    radial-gradient(circle at 82% 22%, rgba(245, 197, 24, .12), transparent 42%);
  border-bottom: var(--border-w) solid var(--about-line);
}

.page-about .hero-about::after {
  content: "財";
  position: absolute;
  right: -1.2rem;
  bottom: -3.2rem;
  font-family: var(--font-display);
  font-size: clamp(11rem, 28vw, 24rem);
  line-height: 1;
  color: rgba(245, 197, 24, .055);
  pointer-events: none;
  user-select: none;
  writing-mode: vertical-rl;
}

.page-about .hero-lock {
  position: relative;
  max-width: var(--container);
  margin: 0 auto;
  z-index: 2;
}

.page-about .hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  color: var(--c-bright);
  font-size: .8rem;
  letter-spacing: .3em;
  padding: .25rem .75rem;
  border: 1px solid var(--about-line);
  border-radius: 999px;
  margin-bottom: var(--space-sm);
  background: rgba(10, 10, 10, .42);
}

.page-about .hero-title {
  font-family: var(--font-display);
  font-size: clamp(3.6rem, 12vw, 7rem);
  line-height: .95;
  letter-spacing: .06em;
  margin: 0;
  color: var(--c-off-white);
  text-shadow: 4px 4px 0 rgba(245, 197, 24, .22), 8px 8px 0 rgba(139, 0, 0, .38);
  writing-mode: horizontal-tb;
}

.page-about .hero-subtitle {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 3.4vw, 1.8rem);
  color: var(--c-gold);
  letter-spacing: .18em;
  margin-top: .85rem;
  margin-bottom: var(--space-md);
  padding-left: .35rem;
  border-left: 4px solid var(--c-crimson);
}

.page-about .hero-note {
  position: absolute;
  top: .5rem;
  right: 1rem;
  color: var(--c-bright);
  font-size: .75rem;
  letter-spacing: .32em;
  writing-mode: vertical-rl;
  opacity: .8;
}

.page-about .hero-desc {
  max-width: 62ch;
  color: rgba(245, 245, 240, .8);
  font-size: .98rem;
  line-height: 1.8;
  margin: 0 0 var(--space-md);
}

.page-about .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .8rem;
  max-width: 46rem;
}

.page-about .stat-num {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 5vw, 2.6rem);
  color: var(--c-gold);
  letter-spacing: .02em;
}

.page-about .stat-num small {
  font-size: .55em;
  color: var(--c-bright);
  margin-left: .15rem;
}

.page-about .stat-label {
  display: block;
  color: rgba(245, 245, 240, .62);
  font-size: .78rem;
  letter-spacing: .16em;
  margin-top: .1rem;
}

/* 章节共用 */
.page-about .chapter {
  padding: var(--space-xl) var(--edge) var(--space-lg);
  max-width: var(--container);
  margin: 0 auto;
  position: relative;
}

.page-about .section-head {
  display: grid;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  position: relative;
}

.page-about .chapter-no {
  font-size: .75rem;
  letter-spacing: .36em;
  color: var(--c-muted);
  margin: 0;
}

.page-about .chapter-large-num {
  display: block;
}

.page-about .chapter-title {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 6vw, 3.6rem);
  line-height: 1.1;
  margin: 0;
  color: var(--c-off-white);
  border-bottom: var(--border-w) solid var(--about-line);
  padding-bottom: var(--space-xs);
  position: relative;
  overflow-wrap: break-word;
}

.page-about .chapter-title::after {
  content: attr(data-chapter-en);
  position: absolute;
  right: 0;
  bottom: .35rem;
  font-size: clamp(.65rem, 1.6vw, .88rem);
  letter-spacing: .3em;
  color: rgba(245, 197, 24, .55);
}

.page-about .section-intro {
  max-width: 56rem;
  margin-top: var(--space-xs);
}

.page-about .prose p {
  line-height: 1.85;
  color: rgba(245, 245, 240, .74);
  margin: 0 0 .75rem;
}

/* 品牌故事 */
.page-about .story-card {
  position: relative;
  padding: 1.4rem 1.2rem 1.6rem;
  border-radius: var(--about-radius);
}

.page-about .story-card-no {
  position: absolute;
  top: .4rem;
  right: 1rem;
  font-size: 3.2rem;
  font-family: var(--font-display);
  color: rgba(245, 197, 24, .16);
  line-height: 1;
  pointer-events: none;
}

.page-about .story-card h3 {
  font-size: 1.2rem;
  color: var(--c-gold);
  margin: 0 0 .6rem;
}

.page-about .story-card p {
  font-size: .92rem;
  line-height: 1.75;
  color: rgba(245, 245, 240, .76);
  margin: 0;
}

.page-about .brand-story-grid {
  display: grid;
  gap: 1rem;
  margin-bottom: var(--space-md);
}

.page-about .brand-story-visual {
  margin: var(--space-md) 0;
}

.page-about .brand-story-visual img,
.page-about .tech-visual img,
.page-about .service-visual img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-about .img-caption {
  font-size: .8rem;
  text-align: center;
  color: var(--c-muted);
  letter-spacing: .08em;
  margin-top: .7rem;
}

/* 时间线 */
.page-about .chapter--dark {
  background: linear-gradient(180deg, #101012, rgba(16, 16, 18, .88));
  max-width: 100%;
  padding-left: var(--edge);
  padding-right: var(--edge);
}

.page-about .chapter--dark .chapter-title {
  border-bottom-color: rgba(220, 20, 60, .4);
}

.page-about .timeline-list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .timeline-item {
  position: relative;
  padding: 0 0 2.5rem 1.6rem;
  border-left: 2px solid rgba(245, 197, 24, .16);
}

.page-about .timeline-item:last-child {
  padding-bottom: 0;
}

.page-about .timeline-marker {
  position: absolute;
  left: -11px;
  top: 2px;
  width: 20px;
  height: 20px;
  border: 3px solid var(--c-gold);
  border-radius: 50%;
  background: var(--c-dark);
  transition: transform .3s ease, background .3s ease;
}

.page-about .timeline-item.is-active .timeline-marker {
  background: var(--c-gold);
  transform: scale(1.18);
  box-shadow: 0 0 0 6px rgba(245, 197, 24, .18);
}

.page-about .timeline-year {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--c-bright);
  margin: 0 0 .4rem;
  letter-spacing: .04em;
}

.page-about .timeline-card h3 {
  margin: 0 0 .5rem;
  font-size: 1.05rem;
  color: var(--c-off-white);
}

.page-about .timeline-card p:not(.timeline-year) {
  font-size: .9rem;
  line-height: 1.75;
  color: rgba(245, 245, 240, .72);
  margin: 0;
}

/* 技术架构 */
.page-about .tech-layout {
  display: grid;
  gap: var(--space-md);
}

.page-about .tech-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .9rem;
}

.page-about .tech-item {
  position: relative;
  padding: 1.2rem 1.2rem 1.3rem 4.4rem;
  border-radius: var(--about-radius);
}

.page-about .tech-index {
  position: absolute;
  left: 1rem;
  top: 1.3rem;
  font-family: var(--font-display);
  font-size: 1.7rem;
  color: var(--c-gold);
  opacity: .82;
}

.page-about .tech-item h3 {
  margin: 0 0 .45rem;
  font-size: 1.08rem;
  color: var(--c-off-white);
}

.page-about .tech-item p {
  margin: 0;
  font-size: .88rem;
  line-height: 1.72;
  color: rgba(245, 245, 240, .7);
}

/* 本地化服务 */
.page-about .chapter--red {
  background: linear-gradient(128deg, rgba(139, 0, 0, .6) 0%, rgba(139, 0, 0, .22) 100%);
  max-width: 100%;
  padding-left: var(--edge);
  padding-right: var(--edge);
}

.page-about .chapter--red .chapter-title {
  color: var(--c-off-white);
  border-bottom-color: rgba(255, 215, 0, .34);
}

.page-about .service-flex {
  display: grid;
  gap: var(--space-md);
}

.page-about .service-lead {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--c-bright);
  margin: 0 0 .5rem;
}

.page-about .service-copy > p {
  margin: 0 0 .8rem;
  line-height: 1.85;
  color: rgba(245, 245, 240, .85);
}

.page-about .service-points {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  gap: .55rem;
}

.page-about .service-points li {
  position: relative;
  padding-left: 1.5rem;
  font-size: .9rem;
  line-height: 1.65;
  color: rgba(245, 245, 240, .84);
}

.page-about .service-points li::before {
  content: "◆";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--c-gold);
  font-size: .72rem;
}

/* 合作与荣誉 */
.page-about .honor-card {
  padding: 1.5rem 1.3rem;
  border-radius: var(--about-radius);
  border-top: 4px solid var(--c-gold);
  display: flex;
  flex-direction: column;
}

.page-about .honor-tag {
  font-size: .72rem;
  letter-spacing: .24em;
  color: var(--c-muted);
  margin: 0 0 .7rem;
}

.page-about .honor-card h3 {
  font-size: 1.15rem;
  color: var(--c-gold);
  margin: 0 0 .55rem;
}

.page-about .honor-card p {
  margin: 0;
  font-size: .88rem;
  line-height: 1.72;
  color: rgba(245, 245, 240, .72);
}

/* 延伸链接 */
.page-about .about-links {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--edge) var(--space-xl);
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  align-items: center;
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: .65rem 1.6rem;
  border-radius: 10px;
  font-size: .92rem;
  letter-spacing: .06em;
  text-decoration: none;
  border: var(--border-w) solid transparent;
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, color .22s ease;
  cursor: pointer;
}

.page-about .btn-gold {
  background: var(--c-gold);
  color: var(--c-black);
  border-color: var(--c-gold);
  box-shadow: var(--about-shadow-soft);
}

.page-about .btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: var(--about-shadow);
}

.page-about .btn-ghost {
  background: transparent;
  color: var(--c-off-white);
  border-color: rgba(255, 215, 0, .38);
}

.page-about .btn-ghost:hover {
  border-color: var(--c-gold);
  color: var(--c-gold);
}

.page-about .btn-crimson {
  background: var(--c-crimson);
  color: var(--c-off-white);
  border-color: var(--c-crimson);
  box-shadow: var(--about-shadow-soft);
}

.page-about .btn-crimson:hover {
  transform: translateY(-2px);
  box-shadow: var(--about-shadow);
}

@media (min-width: 700px) {
  .page-about .hero-stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .brand-story-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
  }

  .page-about .brand-story-visual {
    position: relative;
    margin-top: var(--space-sm);
  }

  .page-about .brand-story-visual::before {
    content: "2018 / 2024";
    position: absolute;
    top: -2.4rem;
    left: 1rem;
    z-index: 2;
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--c-gold);
    letter-spacing: .08em;
    opacity: .7;
  }

  .page-about .tech-layout {
    grid-template-columns: minmax(0, .9fr) 1.1fr;
    gap: var(--space-lg);
    align-items: start;
  }

  .page-about .tech-visual {
    position: sticky;
    top: 6rem;
  }

  .page-about .service-flex {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
  }

  .page-about .service-copy {
    order: 1;
  }

  .page-about .service-visual {
    order: 2;
  }

  .page-about .honor-grid {
    gap: 1.2rem;
  }
}

@media (min-width: 1024px) {
  .page-about .hero-about {
    padding-top: calc(var(--space-xl) + 1rem);
  }

  .page-about .hero-desc {
    font-size: 1.02rem;
  }

  .page-about .section-head {
    grid-template-columns: 1fr 2fr;
    column-gap: var(--space-lg);
    align-items: start;
  }

  .page-about .chapter-no {
    font-size: .72rem;
    margin-top: .4rem;
  }

  .page-about .brand-story-grid {
    gap: 1.4rem;
  }

  .page-about .timeline-item {
    width: 47%;
    padding-right: 2.4rem;
  }

  .page-about .timeline-item:nth-child(odd) {
    margin-right: auto;
  }

  .page-about .timeline-item:nth-child(even) {
    margin-left: auto;
    border-left: none;
    border-right: 2px solid rgba(245, 197, 24, .16);
    padding-left: 0;
    padding-right: 1.6rem;
    text-align: right;
  }

  .page-about .timeline-item:nth-child(even) .timeline-marker {
    left: auto;
    right: -11px;
  }

  .page-about .timeline-item:nth-child(even) .timeline-year {
    text-align: right;
  }

  .page-about .timeline-card p:not(.timeline-year) {
    text-align: left;
  }

  .page-about .about-links {
    gap: 1.1rem;
  }
}