.page-about{
  --about-hero-min-h: 560px;
  --about-section-space-mobile: 4rem;
  --about-section-space-desktop: 7rem;
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: var(--font-body);
  line-height: 1.7;
}

/* 面包屑 */
.page-about .breadcrumbs{
  position: absolute;
  z-index: 3;
  top: 1.25rem;
  left: 1.25rem;
  display: flex;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: rgba(247,241,232,0.65);
  letter-spacing: 0.04em;
}

.page-about .breadcrumbs a{
  color: rgba(247,241,232,0.85);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

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

/* 首屏 */
.page-about .about-hero{
  position: relative;
  min-height: var(--about-hero-min-h);
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--c-navy);
}

.page-about .about-hero__media{
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-about .about-hero__media img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-about .about-hero::after{
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(10,31,68,0.55) 0%, rgba(10,31,68,0.15) 40%, rgba(26,23,20,0.9) 100%);
}

.page-about .about-hero__content{
  position: relative;
  z-index: 2;
  padding: 5rem 1.25rem 3rem;
  color: var(--c-bg);
  width: 100%;
}

.page-about .about-hero .eyebrow{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: 0.75rem;
}

.page-about .about-hero h1{
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 9vw, 5rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: #fff;
  margin: 0 0 0.5rem;
}

.page-about .about-hero__lead{
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: 0.75rem;
}

.page-about .about-hero__desc{
  max-width: 34em;
  font-size: 0.95rem;
  color: rgba(247,241,232,0.82);
  margin: 0;
}

/* 通用 section */
.page-about .about-section{
  position: relative;
}

.page-about .about-section__inner{
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--about-section-space-mobile) 1.25rem;
}

.page-about .about-section__index{
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin: 0 0 0.5rem;
}

.page-about .about-section h2{
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4.5vw, 3rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: 0.01em;
  margin: 0 0 2rem;
}

.page-about .about-section h2::after{
  content: "";
  display: block;
  width: 56px;
  height: 4px;
  background: linear-gradient(90deg, var(--c-accent), var(--c-gold));
  margin-top: 0.75rem;
  border-radius: 2px;
}

/* 品牌源起 */
.page-about .about-origin{
  background: var(--c-bg);
}

.page-about .about-origin__grid{
  display: grid;
  gap: 2rem;
}

.page-about .about-origin__text p{
  margin: 0 0 1rem;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--c-ink);
}

.page-about .about-origin__text p:last-child{
  margin-bottom: 0;
}

.page-about .about-origin__aside{
  border-left: 3px solid var(--c-accent);
  padding-left: 1.25rem;
  background: linear-gradient(135deg, rgba(247,241,232,0) 0%, rgba(212,175,55,0.06) 100%);
}

.page-about .about-origin__aside-label{
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-ink-soft);
  margin-bottom: 0.5rem;
}

.page-about .about-origin__aside-text{
  font-size: 1.1rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--c-ink);
  margin: 0;
}

/* 发展里程碑 */
.page-about .about-milestones{
  background: var(--c-navy);
  color: var(--c-bg);
}

.page-about .about-milestones .about-section__index{
  color: var(--c-gold);
}

.page-about .about-milestones h2{
  color: var(--c-bg);
}

.page-about .about-milestones h2::after{
  background: linear-gradient(90deg, var(--c-gold), rgba(212,175,55,0.2));
}

.page-about .about-milestones__layout{
  display: grid;
  gap: 2.5rem;
  align-items: start;
}

.page-about .about-timeline-mini{
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 2rem;
  padding: 0;
  margin: 0;
}

.page-about .about-timeline-mini__item{
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.page-about .about-timeline-mini__year{
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--c-gold);
  line-height: 1;
}

.page-about .about-timeline-mini__label{
  font-size: 0.8rem;
  color: rgba(247,241,232,0.65);
  letter-spacing: 0.06em;
}

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

.page-about .about-timeline::before{
  content: "";
  position: absolute;
  left: 8px;
  top: 4px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-gold), rgba(212,175,55,0.1));
}

.page-about .about-timeline__item{
  position: relative;
  padding-left: 2.5rem;
  padding-bottom: 2.75rem;
}

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

.page-about .about-timeline__item::before{
  content: "";
  position: absolute;
  left: 0;
  top: 0.2rem;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--c-navy);
  border: 4px solid var(--c-gold);
  box-shadow: 0 0 0 4px rgba(212,175,55,0.15);
}

.page-about .about-timeline__marker{
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.page-about .about-timeline__year{
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--c-gold);
  line-height: 1;
}

.page-about .about-timeline__badge{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: rgba(212,175,55,0.14);
  color: var(--c-gold);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  border: 1px solid rgba(212,175,55,0.2);
}

.page-about .about-timeline__body h3{
  font-size: 1.2rem;
  color: var(--c-bg);
  margin: 0 0 0.5rem;
  line-height: 1.4;
  font-family: var(--font-display);
  font-weight: 600;
}

.page-about .about-timeline__body p{
  margin: 0;
  font-size: 0.95rem;
  color: rgba(247,241,232,0.7);
  line-height: 1.75;
}

/* 数据能力 */
.page-about .about-data{
  background: var(--c-bg);
}

.page-about .about-data__grid{
  display: grid;
  gap: 2.5rem;
}

.page-about .about-data__stats{
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .about-stat{
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-left: 4px solid var(--c-accent);
  border-radius: 4px;
  padding: 1.25rem 1rem;
  box-shadow: 0 2px 12px rgba(26,23,20,0.05);
}

.page-about .about-stat__num{
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--c-navy);
  line-height: 1;
}

.page-about .about-stat__label{
  display: block;
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--c-ink-soft);
}

.page-about .about-data__media{
  position: relative;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(26,23,20,0.1);
}

.page-about .about-data__media img{
  width: 100%;
  height: auto;
  display: block;
}

.page-about .about-data__note{
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--c-line);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--c-ink-soft);
  line-height: 1.7;
}

/* 中国区团队 */
.page-about .about-china{
  background: var(--c-card);
}

.page-about .about-china__layout{
  display: grid;
  gap: 2rem;
}

.page-about .about-china__media{
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(26,23,20,0.08);
}

.page-about .about-china__media img{
  width: 100%;
  height: auto;
  display: block;
}

.page-about .about-china__content p{
  margin: 0 0 1rem;
  line-height: 1.8;
}

.page-about .about-china__content p:last-of-type{
  margin-bottom: 0;
}

.page-about .about-china__links{
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* 服务承诺 */
.page-about .about-commitment{
  background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-navy-2) 100%);
  color: var(--c-bg);
}

.page-about .about-commitment .about-section__index{
  color: var(--c-accent);
}

.page-about .about-commitment h2{
  color: var(--c-bg);
}

.page-about .about-commitment h2::after{
  background: linear-gradient(90deg, var(--c-accent), var(--c-gold));
}

.page-about .about-commitment__grid{
  display: grid;
  gap: 1rem;
}

.page-about .about-commitment__item{
  background: rgba(247,241,232,0.05);
  border: 1px solid rgba(212,175,55,0.14);
  border-radius: 4px;
  padding: 1.25rem 1.25rem;
}

.page-about .about-commitment__title{
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--c-gold);
  margin: 0 0 0.5rem;
}

.page-about .about-commitment__item > p:last-child{
  margin: 0;
  color: rgba(247,241,232,0.7);
  line-height: 1.7;
  font-size: 0.92rem;
}

/* CTA */
.page-about .about-cta{
  background: var(--c-dark);
  color: var(--c-bg);
}

.page-about .about-cta__inner{
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 1.25rem;
  text-align: center;
}

.page-about .about-cta__inner p{
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  margin: 0 0 1.5rem;
  color: var(--c-bg);
}

.page-about .about-cta__inner .btn{
  margin: 0.25rem;
}

/* 平板及以上 */
@media (min-width: 768px){
  .page-about{
    --about-hero-min-h: 680px;
  }

  .page-about .about-section__inner{
    padding: var(--about-section-space-desktop) 2rem;
  }

  .page-about .about-hero__content{
    padding: 6rem 2rem 4rem;
  }

  .page-about .about-origin__grid{
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
  }

  .page-about .about-data__grid{
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
  }

  .page-about .about-data__stats{
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }

  .page-about .about-stat{
    padding: 1.5rem 1.25rem;
  }

  .page-about .about-stat__num{
    font-size: 2.6rem;
  }

  .page-about .about-china__layout{
    grid-template-columns: 1fr 1.2fr;
    gap: 3rem;
    align-items: center;
  }

  .page-about .about-commitment__grid{
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }
}

/* 桌面端 */
@media (min-width: 1024px){
  .page-about .about-milestones__layout{
    grid-template-columns: 240px 1fr;
    gap: 4rem;
  }

  .page-about .about-timeline-mini{
    flex-direction: column;
    gap: 1.75rem;
    border-left: 1px solid rgba(212,175,55,0.2);
    padding-left: 1.5rem;
  }

  .page-about .about-timeline-mini__item{
    position: relative;
    align-items: flex-start;
  }

  .page-about .about-timeline-mini__item::before{
    content: "";
    position: absolute;
    left: -1.6rem;
    top: 0.2rem;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--c-navy);
    border: 2px solid var(--c-gold);
  }

  .page-about .about-timeline-mini__year{
    font-size: 2.2rem;
  }

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

/* 大桌面 */
@media (min-width: 1200px){
  .page-about .about-hero__content{
    padding-left: 3rem;
    padding-bottom: 4rem;
  }

  .page-about .about-section__inner{
    padding-left: 3rem;
    padding-right: 3rem;
  }
}