.page-about{
  font-family:var(--body-font);
  background:var(--bg);
  color:var(--ink);
  line-height:var(--line-height);
  overflow-x:hidden;
}

/* 面包屑 */
.page-about .breadcrumbs{
  padding:76px 20px 0;
  font-size:14px;
  position:relative;
  z-index:2;
}
.page-about .about-breadcrumb__item{
  display:flex;
  align-items:center;
  gap:8px;
  color:var(--ink);
}
.page-about .about-breadcrumb__item a{
  color:var(--navy);
  text-decoration:none;
  font-weight:600;
  transition:color .2s;
}
.page-about .about-breadcrumb__item a:hover{
  color:var(--kiwi-deep);
}
.page-about .about-breadcrumb__sep{
  color:rgba(45,45,45,.4);
}

/* ===== 封面 ===== */
.page-about .about-hero{
  position:relative;
  background:var(--navy);
  color:var(--white);
  padding:32px 0 64px;
  overflow:hidden;
}
.page-about .about-hero::before{
  content:"";
  position:absolute;
  top:-120px;
  right:-80px;
  width:300px;
  height:300px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(123,192,67,.55) 0,transparent 68%);
  pointer-events:none;
}
.page-about .about-hero::after{
  content:"";
  position:absolute;
  bottom:-70px;
  left:-50px;
  width:190px;
  height:190px;
  border:4px solid rgba(255,140,0,.55);
  border-radius:50%;
  background:repeating-radial-gradient(circle,rgba(123,192,67,.35) 0 10px,transparent 10px 20px);
  pointer-events:none;
}
.page-about .about-hero__grid{
  display:grid;
  gap:32px;
  position:relative;
  z-index:1;
}
.page-about .about-hero__kicker{
  font-family:var(--heading-font);
  font-size:13px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--orange);
  margin:0 0 16px;
}
.page-about .about-hero__main h1{
  font-family:var(--heading-font);
  font-size:clamp(28px,6vw,52px);
  font-weight:700;
  line-height:1.12;
  color:var(--white);
  margin:0 0 20px;
  letter-spacing:-.02em;
}
.page-about .about-hero__subline{
  color:var(--kiwi);
}
.page-about .about-hero__lead{
  font-size:16px;
  line-height:1.7;
  color:rgba(255,255,255,.85);
  max-width:560px;
  margin:0 0 24px;
}
.page-about .about-hero__stats{
  display:flex;
  flex-wrap:wrap;
  gap:32px;
}
.page-about .about-hero__stat strong{
  display:block;
  font-family:var(--heading-font);
  font-size:26px;
  font-weight:700;
  color:var(--kiwi);
  line-height:1.1;
}
.page-about .about-hero__stat span{
  display:block;
  font-size:13px;
  color:rgba(255,255,255,.72);
  letter-spacing:.04em;
  margin-top:4px;
}
.page-about .about-hero__aside{
  background:rgba(255,255,255,.08);
  border:3px solid rgba(255,255,255,.4);
  border-radius:16px;
  padding:22px 24px;
  backdrop-filter:blur(4px);
}
.page-about .about-hero__aside-title{
  font-family:var(--heading-font);
  font-size:14px;
  font-weight:700;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--orange);
  margin:0 0 14px;
}
.page-about .about-hero__list{
  list-style:none;
  margin:0;
  padding:0;
}
.page-about .about-hero__list li+li{
  margin-top:10px;
}
.page-about .about-hero__list a{
  display:flex;
  align-items:baseline;
  gap:12px;
  color:var(--white);
  text-decoration:none;
  font-weight:600;
  font-size:15px;
  padding-bottom:8px;
  border-bottom:1px dashed rgba(255,255,255,.3);
  transition:color .2s,border-color .2s;
}
.page-about .about-hero__list a:hover{
  color:var(--orange);
  border-color:var(--orange);
}
.page-about .about-hero__num{
  font-family:var(--heading-font);
  font-weight:700;
  color:var(--kiwi);
  font-size:15px;
}

/* ===== 章节通用 ===== */
.page-about .about-section{
  padding:56px 0;
}
.page-about .about-section--philosophy{
  background:var(--bg);
}
.page-about .about-section--milestones{
  background:var(--white);
}
.page-about .about-section--scale{
  background:var(--mint);
}
.page-about .about-section--achievements{
  background:var(--white);
}
.page-about .about-section--ecosystem{
  background:var(--navy);
  color:var(--white);
}
.page-about .about-chapter__text{
  flex:1;
}
.page-about .chapter{
  display:flex;
  align-items:flex-start;
  gap:18px;
  margin-bottom:28px;
}
.page-about .chapter-num{
  font-family:var(--heading-font);
  font-size:clamp(48px,8vw,88px);
  font-weight:700;
  color:var(--navy);
  line-height:.85;
  letter-spacing:-.04em;
  min-width:.55em;
}
.page-about .about-chapter__text h2{
  font-family:var(--heading-font);
  font-size:clamp(22px,4vw,36px);
  font-weight:700;
  color:var(--navy);
  margin:0 0 4px;
  line-height:1.15;
}
.page-about .about-chapter__text p{
  margin:0;
  font-size:14px;
  color:#7a8599;
  letter-spacing:.04em;
}

/* 深海蓝生态区的章节颜色 */
.page-about .about-section--ecosystem .chapter-num,
.page-about .about-section--ecosystem .about-chapter__text h2{
  color:var(--white);
}
.page-about .about-section--ecosystem .about-chapter__text p{
  color:rgba(255,255,255,.6);
}

/* ===== 01 品牌理念 ===== */
.page-about .about-philosophy__grid{
  display:grid;
  gap:36px;
}
.page-about .about-philosophy__lead{
  font-size:18px;
  font-weight:600;
  line-height:1.6;
  color:var(--navy);
  margin:0 0 16px;
}
.page-about .about-philosophy__content p{
  margin:0 0 16px;
  font-size:15px;
  line-height:1.75;
}
.page-about .about-philosophy__quote{
  margin:24px 0 0;
  padding:16px 20px;
  border-left:4px solid var(--orange);
  background:var(--tint-kiwi);
  border-radius:0 12px 12px 0;
  font-size:16px;
  font-weight:600;
  color:var(--navy);
}
.page-about .about-philosophy__facts{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:14px;
}
.page-about .about-philosophy__facts li{
  background:var(--white);
  border:3px solid var(--kiwi);
  border-radius:14px;
  padding:20px 16px;
  text-align:center;
  box-shadow:var(--shadow);
  display:flex;
  flex-direction:column;
  gap:6px;
  justify-content:center;
  transition:transform .2s,box-shadow .2s;
}
.page-about .about-philosophy__facts li:hover{
  transform:translateY(-4px);
  box-shadow:0 12px 28px rgba(0,0,0,.16);
}
.page-about .about-philosophy__num{
  font-family:var(--heading-font);
  font-size:28px;
  font-weight:700;
  color:var(--navy);
  line-height:1;
}
.page-about .about-philosophy__label{
  font-size:14px;
  color:var(--ink);
}

/* ===== 02 关键里程碑 ===== */
.page-about .about-milestones__lead{
  font-size:15px;
  line-height:1.7;
  color:var(--ink);
  max-width:640px;
  margin:0 0 28px;
}
.page-about .about-milestones__figure{
  margin:0 0 36px;
}
.page-about .about-milestones__figure img{
  display:block;
  width:100%;
  max-width:600px;
  height:auto;
  margin:0 auto;
  border-radius:14px;
  border:3px solid var(--mint);
  box-shadow:var(--shadow);
  object-fit:cover;
}
.page-about .about-milestones__figure figcaption{
  margin-top:10px;
  font-size:13px;
  color:var(--kiwi-deep);
  text-align:center;
  letter-spacing:.02em;
}

/* 时间轴 */
.page-about .about-timeline{
  position:relative;
  margin-top:32px;
}
.page-about .about-timeline__curve{
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:100%;
  pointer-events:none;
  opacity:.5;
}
.page-about .about-timeline__track{
  position:relative;
  display:flex;
  gap:16px;
  list-style:none;
  margin:0;
  padding:0 6px 20px;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  scroll-snap-type:x proximity;
}
.page-about .about-timeline__track::before{
  content:"";
  position:absolute;
  top:39px;
  left:26px;
  right:26px;
  height:3px;
  background:repeating-linear-gradient(90deg,var(--kiwi) 0 12px,transparent 12px 20px);
  border-radius:999px;
  z-index:0;
}
.page-about .about-timeline__item{
  flex:0 0 258px;
  scroll-snap-align:start;
  position:relative;
  padding-top:56px;
  z-index:1;
}
.page-about .about-timeline__year{
  position:absolute;
  top:0;
  left:0;
  font-family:var(--heading-font);
  font-size:22px;
  font-weight:700;
  color:var(--orange);
  line-height:1;
  letter-spacing:-.02em;
}
.page-about .about-timeline__dot{
  position:absolute;
  top:31px;
  left:32px;
  width:18px;
  height:18px;
  border-radius:50%;
  background:var(--kiwi);
  border:4px solid var(--white);
  box-shadow:0 0 0 3px var(--kiwi-deep);
  transition:background .2s,transform .2s;
}
.page-about .about-timeline__item:hover .about-timeline__dot{
  background:var(--orange);
  transform:scale(1.15);
}
.page-about .about-timeline__card{
  background:var(--bg);
  border:3px solid var(--navy);
  border-radius:14px;
  padding:18px;
  box-shadow:var(--shadow);
  min-height:132px;
  transition:transform .2s,box-shadow .2s;
}
.page-about .about-timeline__item:hover .about-timeline__card{
  transform:translateY(-4px);
  box-shadow:0 12px 28px rgba(0,0,0,.15);
}
.page-about .about-timeline__card h3{
  font-family:var(--heading-font);
  font-size:17px;
  font-weight:700;
  color:var(--navy);
  margin:0 0 8px;
}
.page-about .about-timeline__card p{
  font-size:14px;
  line-height:1.6;
  margin:0;
  color:var(--ink);
}

/* ===== 03 用户规模 ===== */
.page-about .about-scale__grid{
  display:grid;
  gap:36px;
}
.page-about .about-scale__lead{
  font-size:16px;
  line-height:1.7;
  margin:0 0 24px;
  max-width:560px;
}
.page-about .about-scale__stats{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:16px;
}
.page-about .about-scale__stats li{
  flex:1 1 120px;
  background:var(--white);
  border:3px solid var(--kiwi-deep);
  border-radius:14px;
  padding:18px 16px;
  text-align:center;
  box-shadow:var(--shadow);
  display:flex;
  flex-direction:column;
  gap:6px;
  transition:transform .2s;
}
.page-about .about-scale__stats li:hover{
  transform:translateY(-4px);
}
.page-about .about-scale__stat-num{
  font-family:var(--heading-font);
  font-size:26px;
  font-weight:700;
  color:var(--navy);
  line-height:1;
}
.page-about .about-scale__stat-label{
  font-size:13px;
  color:var(--ink);
}
.page-about .about-scale__figure{
  margin:0;
}
.page-about .about-scale__figure img{
  display:block;
  width:100%;
  height:auto;
  border-radius:16px;
  border:3px solid var(--white);
  box-shadow:var(--shadow);
  object-fit:cover;
}
.page-about .about-scale__figure figcaption{
  margin-top:10px;
  font-size:13px;
  color:var(--kiwi-deep);
  text-align:center;
}

/* ===== 04 资质与荣誉 ===== */
.page-about .about-achievements__grid{
  display:grid;
  gap:24px;
}
.page-about .about-achievements__card{
  background:var(--bg);
  border:3px solid var(--kiwi);
  border-radius:16px;
  padding:26px 22px;
  box-shadow:var(--shadow);
  text-align:center;
  display:flex;
  flex-direction:column;
  align-items:center;
  transition:transform .2s,box-shadow .2s;
}
.page-about .about-achievements__card:hover{
  transform:translateY(-4px);
  box-shadow:0 14px 30px rgba(0,0,0,.14);
}
.page-about .about-achievements__icon{
  width:120px;
  height:120px;
  border-radius:50%;
  object-fit:cover;
  border:3px solid var(--mint);
  box-shadow:var(--shadow);
  margin-bottom:16px;
}
.page-about .about-achievements__badge{
  display:flex;
  align-items:center;
  justify-content:center;
  width:120px;
  height:120px;
  border-radius:50%;
  background:var(--tint-navy);
  border:3px solid var(--navy);
  font-family:var(--heading-font);
  font-size:32px;
  font-weight:700;
  color:var(--navy);
  margin-bottom:16px;
}
.page-about .about-achievements__card h3{
  font-family:var(--heading-font);
  font-size:18px;
  font-weight:700;
  color:var(--navy);
  margin:0 0 10px;
  line-height:1.3;
}
.page-about .about-achievements__card p{
  font-size:14px;
  line-height:1.65;
  margin:0;
  color:var(--ink);
}

/* ===== 05 合作生态 ===== */
.page-about .about-ecosystem__grid{
  display:grid;
  gap:36px;
}
.page-about .about-ecosystem__content p{
  font-size:15px;
  line-height:1.75;
  color:rgba(255,255,255,.88);
  margin:0 0 16px;
}
.page-about .about-ecosystem__lead{
  font-size:18px;
  font-weight:600;
  color:var(--kiwi);
  margin:0 0 16px;
}
.page-about .about-ecosystem__coverage{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:16px;
}
.page-about .about-ecosystem__coverage li{
  flex:1 1 130px;
  background:rgba(255,255,255,.08);
  border:3px solid rgba(255,255,255,.32);
  border-radius:16px;
  padding:24px 16px;
  text-align:center;
  display:flex;
  flex-direction:column;
  gap:8px;
  transition:transform .2s,border-color .2s;
}
.page-about .about-ecosystem__coverage li:hover{
  transform:translateY(-4px);
  border-color:var(--kiwi);
}
.page-about .about-ecosystem__coverage strong{
  font-family:var(--heading-font);
  font-size:34px;
  font-weight:700;
  color:var(--kiwi);
  line-height:1;
}
.page-about .about-ecosystem__coverage span{
  font-size:14px;
  color:rgba(255,255,255,.78);
}

/* ===== 尾幕 CTA ===== */
.page-about .about-cta{
  background:var(--kiwi);
  padding:56px 0;
  position:relative;
  overflow:hidden;
}
.page-about .about-cta::before{
  content:"";
  position:absolute;
  top:-60px;
  right:-60px;
  width:180px;
  height:180px;
  border-radius:50%;
  border:4px solid rgba(255,255,255,.35);
  background:repeating-radial-gradient(circle,rgba(255,255,255,.15) 0 8px,transparent 8px 16px);
  pointer-events:none;
}
.page-about .about-cta__inner{
  position:relative;
  z-index:1;
  text-align:center;
  max-width:640px;
  margin:0 auto;
}
.page-about .about-cta__kicker{
  font-family:var(--heading-font);
  font-size:13px;
  font-weight:700;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--navy);
  margin:0 0 10px;
}
.page-about .about-cta h2{
  font-family:var(--heading-font);
  font-size:clamp(24px,4vw,34px);
  font-weight:700;
  color:var(--navy);
  margin:0 0 12px;
  line-height:1.2;
}
.page-about .about-cta p{
  font-size:15px;
  line-height:1.7;
  color:var(--ink);
  margin:0 auto 26px;
}
.page-about .about-cta__actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  justify-content:center;
}
.page-about .about-cta .btn-ghost{
  border-color:var(--navy);
  color:var(--navy);
}
.page-about .about-cta .btn-ghost:hover{
  background:var(--navy);
  color:var(--white);
}

/* ===== 响应式增强 ===== */
@media (min-width:768px){
  .page-about .about-philosophy__grid{
    grid-template-columns:1.4fr .6fr;
    gap:48px;
    align-items:start;
  }
  .page-about .about-philosophy__facts{
    grid-template-columns:1fr;
    gap:14px;
  }
  .page-about .about-achievements__grid{
    grid-template-columns:repeat(3,1fr);
    gap:24px;
  }
  .page-about .about-ecosystem__coverage{
    flex-direction:column;
    gap:16px;
  }
  .page-about .about-scale__stats li{
    flex:1 1 150px;
  }
}

@media (min-width:900px){
  .page-about .about-hero{
    padding:48px 0 80px;
  }
  .page-about .about-hero__grid{
    grid-template-columns:1fr 360px;
    gap:56px;
    align-items:end;
  }
  .page-about .about-hero__lead{
    font-size:17px;
  }
  .page-about .about-hero__stats{
    gap:40px;
  }
  .page-about .about-hero__stat strong{
    font-size:30px;
  }

  .page-about .about-section{
    padding:80px 0;
  }
  .page-about .chapter{
    gap:28px;
    margin-bottom:40px;
  }

  .page-about .about-scale__grid{
    grid-template-columns:1fr 1.15fr;
    gap:56px;
    align-items:center;
  }
  .page-about .about-scale__stats{
    flex-wrap:nowrap;
    gap:20px;
  }

  .page-about .about-ecosystem__grid{
    grid-template-columns:1.35fr .65fr;
    gap:56px;
    align-items:center;
  }
  .page-about .about-timeline__track{
    gap:20px;
  }
  .page-about .about-timeline__item{
    flex-basis:280px;
  }
  .page-about .about-milestones__figure img{
    margin-left:0;
  }
}

@media (min-width:1200px){
  .page-about .about-hero__grid{
    grid-template-columns:1fr 400px;
  }
  .page-about .about-milestones__figure img{
    max-width:720px;
  }
}