.page-about{
  background: var(--color-white);
}

/* ============ Hero 首屏 ============ */
.page-about .about-hero{
  background: linear-gradient(135deg, var(--color-space-blue) 0%, var(--color-deep) 72%);
  color: var(--color-white);
  padding: 40px 0 56px;
  position: relative;
  overflow: hidden;
}
.page-about .about-hero::before{
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 300px;
  height: 300px;
  background: linear-gradient(135deg, rgba(255,107,53,0.28), rgba(255,193,7,0.12));
  clip-path: polygon(100% 0, 100% 100%, 0 0);
  pointer-events: none;
}
.page-about .about-hero .breadcrumb{
  margin-bottom: 40px;
  position: relative;
  z-index: 1;
}
.page-about .about-hero .breadcrumb-list{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
}
.page-about .about-hero .breadcrumb-link{
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  transition: color 0.2s;
}
.page-about .about-hero .breadcrumb-link:hover{
  color: var(--color-orange);
}
.page-about .about-hero .breadcrumb-item[aria-current="page"]{
  color: rgba(255,255,255,0.92);
}
.page-about .about-hero-grid{
  display: grid;
  gap: 32px;
  position: relative;
  z-index: 1;
}
.page-about .about-hero-content{
  max-width: 680px;
}
.page-about .about-hero .section-kicker{
  color: var(--color-yellow);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: block;
}
.page-about .about-hero h1{
  font-family: var(--font-display);
  font-size: 30px;
  line-height: 1.28;
  color: var(--color-white);
  margin-bottom: 20px;
}
.page-about .about-hero-desc{
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255,255,255,0.75);
  margin-bottom: 28px;
}
.page-about .about-hero-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.page-about .about-hero-visual img{
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
  background-color: var(--color-deep);
}
.page-about .about-hero-stats{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px 16px;
  margin-top: 48px;
  border-top: 1px solid rgba(255,255,255,0.14);
  padding-top: 32px;
  position: relative;
  z-index: 1;
}
.page-about .about-stat{
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.page-about .about-stat-num{
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--color-orange);
}
.page-about .about-stat-label{
  font-size: 13px;
  color: rgba(255,255,255,0.6);
}

/* ============ 章节预览 ============ */
.page-about .about-preview{
  background: var(--color-bg-light);
  padding: 40px 0 56px;
}
.page-about .about-preview-head{
  margin-bottom: 24px;
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
}
.page-about .about-preview-desc{
  font-size: 14px;
  color: var(--color-text-muted);
  margin: 0;
}
.page-about .about-preview-grid{
  display: grid;
  gap: 12px;
}
.page-about .about-preview-grid .chapter-link{
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--color-white);
  padding: 20px 24px;
  border-radius: var(--radius-md);
  text-decoration: none;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s, box-shadow 0.2s;
}
.page-about .about-preview-grid .chapter-link:hover{
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}
.page-about .about-preview-grid .chapter-index-num{
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-orange);
}
.page-about .about-preview-grid .chapter-index-title{
  font-family: var(--font-display);
  font-size: 16px;
  color: var(--color-text);
}
.page-about .about-preview-grid .chapter-index-desc{
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ============ 品牌故事 ============ */
.page-about .about-story{
  background: var(--color-white);
}
.page-about .about-milestone-cover{
  margin-bottom: 40px;
}
.page-about .about-milestone-cover img{
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
}
.page-about .about-timeline{
  margin-top: 8px;
}
.page-about .about-timeline-item{
  position: relative;
  padding: 0 0 40px 32px;
  margin-left: 12px;
  border-left: 2px solid var(--color-mist);
}
.page-about .about-timeline-item:last-child{
  padding-bottom: 0;
}
.page-about .about-timeline-item::before{
  content: "";
  position: absolute;
  left: -6px;
  top: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-white);
  border: 2px solid var(--color-orange);
  transition: background 0.2s, box-shadow 0.2s;
}
.page-about .about-timeline-item:hover::before{
  background: var(--color-orange);
  box-shadow: 0 0 0 4px rgba(255,107,53,0.15);
}
.page-about .about-timeline-year{
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-orange);
  display: block;
  margin-bottom: 8px;
}
.page-about .about-timeline-card{
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: background 0.2s;
}
.page-about .about-timeline-item:hover .about-timeline-card{
  background: #EDF1F7;
}
.page-about .about-timeline-card h3{
  font-family: var(--font-display);
  font-size: 17px;
  margin-bottom: 8px;
  color: var(--color-text);
}
.page-about .about-timeline-card p{
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text-muted);
  margin: 0;
}

/* ============ 团队与组织 ============ */
.page-about .about-team{
  position: relative;
  padding: 80px 0;
}
.page-about .about-team::after{
  content: "";
  position: absolute;
  bottom: 0;
  right: 0;
  width: 200px;
  height: 120px;
  background: linear-gradient(135deg, rgba(255,107,53,0.22), rgba(255,193,7,0.1));
  clip-path: polygon(100% 0, 0 100%, 100% 100%);
  pointer-events: none;
}
.page-about .about-team .section-title,
.page-about .about-ecosystem .section-title{
  color: var(--color-white);
}
.page-about .about-team .section-desc,
.page-about .about-ecosystem .section-desc{
  color: rgba(255,255,255,0.65);
}
.page-about .about-team .section-kicker,
.page-about .about-ecosystem .section-kicker{
  color: var(--color-yellow);
}
.page-about .about-team-grid{
  display: grid;
  gap: 40px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.page-about .about-team-visual{
  text-align: center;
}
.page-about .about-team-visual img{
  width: 100%;
  max-width: 420px;
  height: auto;
  border-radius: var(--radius-lg);
  display: block;
  margin: 0 auto 16px;
}
.page-about .about-team-visual-note{
  font-family: var(--font-mono);
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}
.page-about .about-team-list{
  display: grid;
  gap: 20px;
}
.page-about .about-team-card{
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: background 0.2s, border-color 0.2s;
}
.page-about .about-team-card:hover{
  background: rgba(255,255,255,0.07);
  border-color: rgba(255,255,255,0.2);
}
.page-about .about-team-head{
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  gap: 12px;
}
.page-about .about-team-count{
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  color: var(--color-yellow);
}
.page-about .about-team-card p{
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255,255,255,0.72);
}

/* ============ 数据与影响力 ============ */
.page-about .about-data{
  background: var(--color-bg-light);
}
.page-about .about-data-grid{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}
.page-about .about-data-card{
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: box-shadow 0.2s, transform 0.2s;
}
.page-about .about-data-card:hover{
  box-shadow: var(--shadow-lift);
  transform: translateY(-2px);
}
.page-about .about-data-num{
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--color-space-blue);
}
.page-about .about-data-card:nth-child(2n) .about-data-num{
  color: var(--color-orange);
}
.page-about .about-data-label{
  font-size: 14px;
  color: var(--color-text-muted);
}
.page-about .about-data-chart{
  display: grid;
  gap: 24px;
  align-items: center;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
}
.page-about .about-data-chart img{
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  display: block;
}
.page-about .about-data-chart-note h3{
  font-family: var(--font-display);
  font-size: 18px;
  margin-bottom: 10px;
  color: var(--color-text);
}
.page-about .about-data-chart-note p{
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text-muted);
  margin: 0 0 12px;
}
.page-about .about-data-chart-meta{
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-mist);
  padding-top: 12px;
  margin-top: 12px !important;
}

/* ============ 资质与信任 ============ */
.page-about .about-trust{
  background: var(--color-white);
}
.page-about .about-trust-grid{
  display: grid;
  gap: 24px;
  margin-bottom: 40px;
}
.page-about .about-trust-card{
  background: var(--color-bg-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: background 0.2s, transform 0.2s;
}
.page-about .about-trust-card:hover{
  background: #EDF1F7;
  transform: translateY(-2px);
}
.page-about .about-trust-card::after{
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-orange), var(--color-yellow));
}
.page-about .about-trust-icon{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--color-space-blue), var(--color-deep));
  color: var(--color-yellow);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}
.page-about .about-trust-card h3{
  font-family: var(--font-display);
  font-size: 18px;
  margin-bottom: 10px;
  color: var(--color-text);
}
.page-about .about-trust-card p{
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}
.page-about .about-trust-meta{
  font-size: 13px;
  border-top: 1px solid var(--color-mist);
  padding-top: 12px;
  margin-top: 12px;
}
.page-about .about-trust-statement{
  background: var(--color-space-blue);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  color: rgba(255,255,255,0.8);
  font-size: 15px;
  line-height: 1.8;
  text-align: center;
}
.page-about .about-trust-statement p{
  margin: 0;
}

/* ============ 合作与生态 ============ */
.page-about .about-ecosystem{
  padding: 80px 0;
}
.page-about .about-eco-grid{
  display: grid;
  gap: 24px;
  margin-bottom: 40px;
}
.page-about .about-eco-card{
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: background 0.2s;
}
.page-about .about-eco-card:hover{
  background: rgba(255,255,255,0.07);
}
.page-about .about-eco-card h3{
  font-family: var(--font-display);
  font-size: 18px;
  margin-bottom: 12px;
  color: var(--color-white);
  position: relative;
  padding-left: 16px;
}
.page-about .about-eco-card h3::before{
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 18px;
  background: var(--color-orange);
  border-radius: 2px;
}
.page-about .about-eco-card p{
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255,255,255,0.72);
  margin: 0;
}
.page-about .about-eco-cta{
  text-align: center;
}

/* ============ 平板及以上 ============ */
@media (min-width: 768px){
  .page-about .about-hero{
    padding: 56px 0 64px;
  }
  .page-about .about-hero h1{
    font-size: 40px;
  }
  .page-about .about-hero-grid{
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
  }
  .page-about .about-hero-desc{
    font-size: 16px;
  }
  .page-about .about-hero-stats{
    grid-template-columns: repeat(4, 1fr);
  }
  .page-about .about-stat-num{
    font-size: 34px;
  }
  .page-about .about-preview-grid{
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .about-data-grid{
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .about-data-chart{
    grid-template-columns: 1fr 1fr;
  }
  .page-about .about-data-num{
    font-size: 34px;
  }
}

/* ============ 桌面宽度 ============ */
@media (min-width: 1024px){
  .page-about .about-preview-grid{
    grid-template-columns: repeat(5, 1fr);
  }
  .page-about .about-team-grid{
    grid-template-columns: 0.9fr 1.1fr;
  }
  .page-about .about-trust-grid{
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .about-eco-grid{
    grid-template-columns: repeat(3, 1fr);
  }
}