.page-about{
  --about-contour: radial-gradient(ellipse 60% 50% at 85% 10%, rgba(201,162,39,0.18) 0%, transparent 60%);
  --about-line: repeating-linear-gradient(160deg, transparent 0 14px, rgba(255,255,255,0.03) 14px 15px);
  --about-peak: repeating-radial-gradient(ellipse 140% 90% at 75% 5%, transparent 0 26px, rgba(255,255,255,0.04) 26px 27px);
  position: relative;
  background: var(--color-bg);
  overflow-x: hidden;
}

/* 面包屑层级微调 */
.page-about .about-hero__breadcrumb{
  margin: 0 0 32px;
  padding: 0;
}
.page-about .about-hero__breadcrumb .breadcrumb__list{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .about-hero__breadcrumb .breadcrumb__link{
  color: rgba(255,255,255,0.72);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.25s ease;
}
.page-about .about-hero__breadcrumb .breadcrumb__link:hover{
  color: var(--color-gold);
}
.page-about .about-hero__breadcrumb .breadcrumb__item{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}
.page-about .about-hero__breadcrumb .breadcrumb__item + .breadcrumb__item::before{
  content: "/";
  color: rgba(255,255,255,0.35);
}
.page-about .about-hero__breadcrumb .breadcrumb__current{
  color: rgba(255,255,255,0.9);
  font-weight: 500;
}

/* ========== Hero 封面区 ========== */
.page-about .about-hero{
  position: relative;
  background:
    var(--about-contour),
    linear-gradient(118deg, var(--color-primary) 0% 58%, var(--color-teal) 58% 100%);
  color: var(--color-white);
  min-height: 520px;
  display: flex;
  align-items: center;
  padding: 48px 0 80px;
  overflow: hidden;
}
.page-about .about-hero::after{
  content: "";
  position: absolute;
  inset: 0;
  background: var(--about-peak), var(--about-line);
  pointer-events: none;
  mix-blend-mode: overlay;
  z-index: 0;
}
.page-about .about-hero::before{
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-red) 50%, var(--color-gold) 100%);
  transform: skewY(-1.2deg);
  transform-origin: left;
  z-index: 2;
}
.page-about .about-hero__inner{
  position: relative;
  z-index: 1;
  display: flex;
  gap: 32px;
  align-items: center;
}
.page-about .about-hero__rail{
  flex: 0 0 auto;
}
.page-about .about-hero__rail-text{
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 22px;
  letter-spacing: 0.32em;
  color: rgba(255,255,255,0.88);
  border-right: 2px solid var(--color-gold);
  padding-right: 14px;
  white-space: nowrap;
  height: 260px;
  position: sticky;
  top: 100px;
}
.page-about .about-hero__content{
  flex: 1;
  max-width: 780px;
}
.page-about .about-hero__tag{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-accent);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #E8DCC4;
  margin-bottom: 18px;
}
.page-about .about-hero__tag::before{
  content: "";
  width: 34px;
  height: 2px;
  background: var(--color-gold);
}
.page-about .about-hero__title{
  font-family: var(--font-title);
  font-size: clamp(36px, 6vw, 58px);
  font-weight: 900;
  line-height: 1.16;
  color: #fff;
  margin: 0 0 22px;
}
.page-about .about-hero__title::after{
  content: "";
  display: block;
  width: 62px;
  height: 4px;
  background: var(--color-gold);
  margin-top: 18px;
  transform: skewX(-20deg);
}
.page-about .about-hero__lead{
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255,255,255,0.9);
  max-width: 46em;
  margin-bottom: 26px;
}
.page-about .about-hero__meta{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}
.page-about .about-hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .hero-btn-outline{
  border-color: rgba(255,255,255,0.55);
  color: #fff;
}
.page-about .hero-btn-outline:hover{
  border-color: var(--color-gold);
  color: var(--color-gold);
}

/* ========== 品牌故事 ========== */
.page-about .about-story{
  padding: 56px 0 64px;
  position: relative;
  background: var(--color-bg);
}
.page-about .about-story__grid{
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.page-about .about-story__media{
  flex: 0 0 auto;
  order: -1;
  margin: 0;
}
.page-about .about-story__img{
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
  box-shadow: var(--shadow-lg);
}
.page-about .about-story__text{
  flex: 1;
}
.page-about .about-story__copy{
  font-size: 15px;
  line-height: 1.85;
  color: var(--color-ink);
  margin: 0 0 16px;
  max-width: 65em;
}
.page-about .about-story__facts{
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 28px;
}
.page-about .about-story__facts > div{
  background: var(--color-beige);
  padding: 14px 16px;
  border-left: 3px solid var(--color-gold);
}
.page-about .about-story__facts dt{
  font-size: 12px;
  font-weight: 600;
  color: var(--color-muted);
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}
.page-about .about-story__facts dd{
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
}

/* ========== 发展里程碑 ========== */
.page-about .about-timeline-section{
  background:
    linear-gradient(180deg, var(--color-bg) 0%, var(--color-white) 100%);
  padding: 48px 0 24px;
}
.page-about .about-timeline__head{
  margin-bottom: 32px;
}
.page-about .about-timeline__track{
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 36px;
}
.page-about .about-timeline__item{
  position: relative;
  padding: 0 0 0 26px;
  display: block;
}
.page-about .about-timeline__item::before{
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  bottom: -24px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-gold) 0%, var(--color-teal) 70%, transparent 100%);
}
.page-about .about-timeline__item:last-child::before{
  display: none;
}
.page-about .about-timeline__item::after{
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-gold);
  box-shadow: 0 0 0 4px rgba(201,162,39,0.18);
}
.page-about .about-timeline__year{
  font-family: var(--font-accent);
  font-size: 30px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-gold);
  display: block;
  margin-bottom: 10px;
  letter-spacing: 0.04em;
}
.page-about .about-timeline__card{
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  padding: 20px 22px;
  border-top: 3px solid var(--color-primary);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.page-about .about-timeline__card:hover{
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.page-about .about-timeline__title{
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 8px;
}
.page-about .about-timeline__desc{
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  margin: 0;
  max-width: 60em;
}
.page-about .about-timeline__media{
  margin: 40px 0 0;
  position: relative;
}
.page-about .about-timeline__media::before{
  content: "";
  position: absolute;
  left: 0;
  top: -12px;
  width: 100%;
  height: 12px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-red), var(--color-primary));
  clip-path: polygon(0 0, 100% 100%, 100% 100%, 0 0);
}
.page-about .about-timeline__media img{
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  box-shadow: var(--shadow-sm);
}

/* ========== 资质与合规 ========== */
.page-about .about-compliance{
  background:
    var(--about-peak),
    var(--about-line),
    var(--color-primary);
  color: var(--color-white);
  padding: 52px 0 56px;
  position: relative;
}
.page-about .about-compliance__head{
  margin-bottom: 24px;
}
.page-about .about-compliance__head .section-head__tag{
  color: #E8DCC4;
}
.page-about .about-compliance__head .section-head__title{
  color: var(--color-white);
}
.page-about .about-compliance__head .section-head__lead{
  color: rgba(255,255,255,0.72);
}
.page-about .about-compliance__grid{
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 28px;
}
.page-about .about-compliance__card{
  position: relative;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  padding: 22px;
  transition: background 0.3s ease, transform 0.3s var(--ease);
}
.page-about .about-compliance__card::before{
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 40px;
  height: 3px;
  background: var(--color-gold);
  transform: skewX(-30deg);
}
.page-about .about-compliance__card:hover{
  background: rgba(255,255,255,0.13);
  transform: translateY(-2px);
}
.page-about .about-compliance__card-title{
  font-family: var(--font-title);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-white);
  margin: 12px 0 8px;
}
.page-about .about-compliance__card-body{
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255,255,255,0.8);
  margin: 0;
  max-width: 60em;
}
.page-about .about-compliance__card .index-num{
  font-family: var(--font-accent);
  font-size: 26px;
  font-weight: 700;
  color: var(--color-gold);
  line-height: 1;
}
.page-about .about-compliance__console{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 24px;
  background: rgba(16,32,48,0.4);
  border: 1px solid rgba(255,255,255,0.12);
  padding: 18px;
}
.page-about .about-compliance__console-item{
  padding: 10px 12px;
  background: rgba(255,255,255,0.06);
  border-left: 2px solid var(--color-gold);
}
.page-about .about-compliance__console-label{
  display: block;
  font-family: var(--font-accent);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  margin-bottom: 4px;
}
.page-about .about-compliance__console-value{
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-white);
}

/* ========== 合作生态 ========== */
.page-about .about-ecosystem{
  background: var(--color-bg);
  padding: 56px 0;
}
.page-about .about-ecosystem__layout{
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.page-about .about-ecosystem__list{
  list-style: none;
  margin: 26px 0 28px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
.page-about .about-ecosystem__list li{
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--color-ink);
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  padding: 12px 14px;
  transition: border-color 0.25s ease, transform 0.25s ease;
  border-left: 3px solid transparent;
}
.page-about .about-ecosystem__list li:hover{
  border-left-color: var(--color-gold);
  transform: translateX(4px);
}
.page-about .about-ecosystem__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-ecosystem__btn{
  background: var(--color-white);
}
.page-about .about-ecosystem__visual{
  margin: 0;
  position: relative;
}
.page-about .about-ecosystem__visual::after{
  content: "";
  position: absolute;
  right: -8px;
  bottom: -8px;
  width: 48px;
  height: 48px;
  border-right: 3px solid var(--color-gold);
  border-bottom: 3px solid var(--color-gold);
  pointer-events: none;
}
.page-about .about-ecosystem__visual img{
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  box-shadow: var(--shadow-lg);
}

/* ========== 延伸导航 ========== */
.page-about .about-next{
  background:
    var(--about-line),
    var(--color-footer);
  color: var(--color-white);
  padding: 44px 0 52px;
  position: relative;
}
.page-about .about-next::before{
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-red) 50%, var(--color-gold) 100%);
}
.page-about .about-next .section-head__tag{
  color: #E8DCC4;
}
.page-about .about-next__title{
  font-family: var(--font-title);
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 900;
  color: var(--color-white);
  margin: 8px 0 20px;
}
.page-about .about-next__links{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}
.page-about .about-next__note{
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255,255,255,0.62);
  max-width: 56em;
  margin: 0;
  border-left: 2px solid var(--color-gold);
  padding-left: 14px;
}

/* ========== 桌面端 ========== */
@media (min-width: 900px){
  .page-about .about-hero__rail{
    display: block;
  }
  .page-about .about-hero__rail-text{
    font-size: 24px;
    height: 300px;
  }
  .page-about .about-hero__inner{
    gap: 56px;
  }
  .page-about .about-hero__lead{
    font-size: 17px;
  }
  .page-about .about-story{
    padding: 72px 0;
  }
  .page-about .about-story__grid{
    flex-direction: row;
    align-items: flex-start;
    gap: 60px;
  }
  .page-about .about-story__media{
    order: 2;
    flex: 0 0 380px;
  }
  .page-about .about-story__facts{
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .about-timeline-section{
    padding: 64px 0 32px;
  }
  .page-about .about-timeline__track{
    display: grid;
    grid-template-columns: repeat(4, minmax(220px, 1fr));
    gap: 28px;
    margin-top: 48px;
    overflow-x: auto;
    scroll-snap-type: x proximity;
    padding-bottom: 8px;
    scrollbar-width: thin;
  }
  .page-about .about-timeline__item{
    padding: 0;
    scroll-snap-align: start;
  }
  .page-about .about-timeline__item::before{
    left: 0;
    top: 0;
    bottom: auto;
    width: auto;
    height: 2px;
    background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-primary) 100%);
    right: 0;
  }
  .page-about .about-timeline__item::after{
    left: 0;
    top: -4px;
  }
  .page-about .about-timeline__year{
    font-size: 36px;
    margin: 10px 0 14px;
  }
  .page-about .about-timeline__media{
    margin-top: 56px;
  }
  .page-about .about-compliance__grid{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 36px;
  }
  .page-about .about-compliance__console{
    grid-template-columns: repeat(4, 1fr);
    margin-top: 32px;
  }
  .page-about .about-ecosystem__layout{
    flex-direction: row;
    align-items: center;
    gap: 56px;
  }
  .page-about .about-ecosystem__content{
    flex: 1 1 56%;
  }
  .page-about .about-ecosystem__visual{
    flex: 0 0 380px;
  }
  .page-about .about-ecosystem__list{
    grid-template-columns: 1fr 1fr;
  }
  .page-about .about-next{
    padding: 56px 0;
  }
}