.page-about{
  --ab-radius-lg: 1.5rem;
  color: var(--wm-text);
  overflow-x: clip;
}
.page-about [id]{
  scroll-margin-top: calc(var(--wm-header-h) + 1rem);
}
.page-about .wm-crumbs{
  padding-top: calc(var(--wm-header-h) + 1.5rem);
  margin-bottom: 0;
}

/* ===== 首屏 ===== */
.page-about .ab-hero{
  position: relative;
  padding: 2.5rem 0 3rem;
  overflow: hidden;
}
.page-about .ab-hero::before{
  content: "";
  position: absolute;
  top: 0;
  right: -10%;
  width: 60%;
  height: 100%;
  background: linear-gradient(120deg, rgba(230,57,70,0.22), rgba(29,53,87,0.4));
  clip-path: polygon(12% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
  display: none;
}
.page-about .ab-hero__grid{
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2.5rem;
}
.page-about .ab-hero__copy{
  display: grid;
  gap: 1.25rem;
  align-content: start;
}
.page-about .ab-hero__copy h1{
  margin: 0;
  font-family: var(--wm-font-head);
  font-size: clamp(2.25rem, 4.5vw, 3.75rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
}
.page-about .ab-hero__lead{
  margin: 0;
  max-width: 36rem;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--wm-silver);
}
.page-about .ab-hero__meta{
  margin: 0;
  padding: 0.875rem 1rem;
  border-left: 3px solid var(--wm-red);
  background: rgba(46,64,87,0.4);
  font-size: 0.9375rem;
  line-height: 1.6;
}
.page-about .ab-hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-top: 0.5rem;
}
.page-about .ab-hero__stats{
  display: grid;
  gap: 1rem;
}
.page-about .ab-hero__stat{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 1.5rem;
  background: linear-gradient(135deg, var(--wm-gray-blue), rgba(29,53,87,0.9));
  border: 1px solid rgba(168,218,220,0.2);
  border-radius: var(--wm-radius);
  position: relative;
  overflow: hidden;
}
.page-about .ab-hero__stat::after{
  content: "";
  position: absolute;
  right: -0.75rem;
  top: -0.75rem;
  width: 3.5rem;
  height: 3.5rem;
  background: var(--wm-red);
  opacity: 0.12;
  border-radius: 50%;
}
.page-about .ab-hero__num{
  font-family: var(--wm-font-head);
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1;
  display: flex;
  align-items: baseline;
  gap: 0.15rem;
  position: relative;
  z-index: 1;
  white-space: nowrap;
}
.page-about .ab-hero__num small{
  font-size: 1rem;
  color: var(--wm-red);
  font-weight: 700;
}
.page-about .ab-hero__label{
  font-size: 0.875rem;
  color: var(--wm-silver);
  text-align: right;
  max-width: 11rem;
  line-height: 1.5;
}

/* ===== 章节目录 ===== */
.page-about .ab-toc-wrap{
  margin-bottom: 1rem;
  position: relative;
  z-index: 2;
}
.page-about .ab-toc{
  margin: 0;
  padding: 0.75rem 1rem;
  background: rgba(29,53,87,0.6);
  border: 1px solid rgba(168,218,220,0.15);
  border-radius: var(--wm-radius-sm);
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0;
  list-style: none;
}
.page-about .ab-toc .wm-toc__link{
  display: block;
  padding: 0.4rem 0.75rem;
  font-size: 0.875rem;
  border-radius: var(--wm-radius-sm);
  color: var(--wm-silver);
  text-decoration: none;
  transition: color 0.25s ease, background 0.25s ease;
}
.page-about .ab-toc .wm-toc__link[data-spy-active="true"]{
  color: var(--wm-white);
  background: rgba(230,57,70,0.25);
}

/* ===== 通用区块 ===== */
.page-about .ab-section{
  padding: 3rem 0;
}
.page-about .ab-section__side{
  display: grid;
  gap: 1rem;
  align-content: start;
}
.page-about .ab-section__title{
  margin: 0;
  font-family: var(--wm-font-head);
  font-size: clamp(2rem, 3vw, 2.75rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.page-about .ab-section__lead{
  margin: 0;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--wm-silver);
}
.page-about .ab-section__img{
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--wm-radius);
  margin-top: 1rem;
  border: 1px solid rgba(168,218,220,0.2);
}

/* ===== 发展历程 ===== */
.page-about .ab-history__grid{
  display: grid;
  gap: 2.5rem;
}
.page-about .ab-timeline{
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}
.page-about .ab-timeline::before{
  content: "";
  position: absolute;
  left: 3.5rem;
  top: 0.4rem;
  bottom: 0.4rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--wm-red), var(--wm-silver), rgba(168,218,220,0.2));
}
.page-about .ab-timeline__item{
  position: relative;
  padding: 0 0 2rem 4rem;
}
.page-about .ab-timeline__item:last-child{
  padding-bottom: 0;
}
.page-about .ab-timeline__year{
  position: absolute;
  left: 0;
  top: 0;
  width: 2.75rem;
  text-align: right;
  font-family: var(--wm-font-head);
  font-weight: 900;
  font-size: 1rem;
  color: var(--wm-red);
  line-height: 1.4;
}
.page-about .ab-timeline__item::before{
  content: "";
  position: absolute;
  left: 3.125rem;
  top: 0.35rem;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--wm-red);
  box-shadow: 0 0 0 4px rgba(230,57,70,0.15);
}
.page-about .ab-timeline__panel{
  padding: 1.25rem 1.5rem;
  background: rgba(46,64,87,0.5);
  border-left: 3px solid var(--wm-red);
  border-radius: 0 var(--wm-radius-sm) var(--wm-radius-sm) 0;
  transition: transform 0.25s ease, background 0.25s ease;
}
.page-about .ab-timeline__panel h3{
  margin: 0 0 0.4rem;
  font-family: var(--wm-font-head);
  font-size: 1.125rem;
  font-weight: 800;
}
.page-about .ab-timeline__panel p{
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--wm-silver);
}
.page-about .ab-timeline__item:hover .ab-timeline__panel{
  background: rgba(46,64,87,0.75);
  transform: translateX(0.25rem);
}

/* ===== 服务能力带 ===== */
.page-about .ab-service-band{
  background: linear-gradient(120deg, rgba(29,53,87,0.85), rgba(46,64,87,0.4), rgba(29,53,87,0.85));
  border-top: 1px solid rgba(230,57,70,0.3);
  border-bottom: 1px solid rgba(230,57,70,0.3);
  position: relative;
  overflow: hidden;
}
.page-about .ab-service-band::before{
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--wm-red), transparent 35%, var(--wm-yellow) 80%, transparent);
  opacity: 0.6;
}
.page-about .ab-service-band__inner{
  display: grid;
  gap: 2.5rem;
}
.page-about .ab-service-band__inline{
  display: grid;
  gap: 1rem;
}
.page-about .ab-service-row{
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: 1.25rem;
  align-items: start;
  padding: 1.25rem 1.5rem;
  background: rgba(29,53,87,0.7);
  border: 1px solid rgba(168,218,220,0.15);
  border-left: 3px solid var(--wm-red);
  border-radius: 0 var(--wm-radius-sm) var(--wm-radius-sm) 0;
}
.page-about .ab-service-row__num{
  font-family: var(--wm-font-head);
  font-weight: 900;
  font-size: 1.875rem;
  color: var(--wm-red);
  line-height: 1;
  white-space: nowrap;
}
.page-about .ab-service-row__text strong{
  display: block;
  font-size: 1rem;
  margin-bottom: 0.3rem;
}
.page-about .ab-service-row__text p{
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--wm-silver);
}

/* ===== 团队与组织 ===== */
.page-about .ab-team__grid{
  display: grid;
  gap: 2rem;
}
.page-about .ab-team__content{
  display: grid;
  gap: 1.25rem;
  align-content: start;
}
.page-about .ab-team__list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}
.page-about .ab-team__list li{
  display: flex;
  gap: 1rem;
  align-items: baseline;
  padding: 1rem 1.25rem;
  background: rgba(46,64,87,0.4);
  border-radius: var(--wm-radius-sm);
}
.page-about .ab-team__list strong{
  color: var(--wm-red);
  font-family: var(--wm-font-head);
  font-size: 1.5rem;
  line-height: 1;
  flex: 0 0 auto;
}
.page-about .ab-team__list span{
  color: var(--wm-silver);
  font-size: 0.9375rem;
  line-height: 1.6;
}
.page-about .ab-team__note{
  margin: 0;
  padding: 0.875rem 1rem;
  background: rgba(230,57,70,0.1);
  border-radius: var(--wm-radius-sm);
  font-size: 0.875rem;
  color: var(--wm-silver);
  line-height: 1.6;
}
.page-about .ab-team__visual img{
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--wm-radius);
  border: 1px solid rgba(168,218,220,0.2);
}

/* ===== 资质与合作 ===== */
.page-about .ab-qualification__head{
  display: grid;
  gap: 1rem;
  margin-bottom: 2rem;
}
.page-about .ab-qualification__grid{
  display: grid;
  gap: 1rem;
}
.page-about .ab-qualification__list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}
.page-about .ab-qualification__list li{
  position: relative;
  padding: 1.25rem 1.5rem 1.25rem 3rem;
  background: rgba(46,64,87,0.4);
  border-radius: var(--wm-radius-sm);
  font-weight: 700;
  font-size: 0.9375rem;
  line-height: 1.5;
}
.page-about .ab-qualification__list li::before{
  content: "✓";
  position: absolute;
  left: 1.25rem;
  top: 1.2rem;
  width: 1.25rem;
  height: 1.25rem;
  color: var(--wm-red);
  font-weight: 900;
  font-size: 1rem;
}
.page-about .ab-qualification__img{
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--wm-radius);
  border: 1px solid rgba(168,218,220,0.2);
}
.page-about .ab-qualification__note{
  padding: 1.5rem;
  background: linear-gradient(135deg, rgba(230,57,70,0.12), rgba(29,53,87,0.6));
  border-radius: var(--wm-radius-sm);
  line-height: 1.75;
  color: var(--wm-silver);
  font-size: 0.9375rem;
}

/* ===== 服务承诺 ===== */
.page-about .ab-commit__head{
  display: grid;
  gap: 1rem;
  margin-bottom: 2rem;
}
.page-about .ab-commit__grid{
  display: grid;
  gap: 1.25rem;
}
.page-about .ab-commit-card{
  padding: 1.75rem 1.5rem;
  background: linear-gradient(160deg, rgba(46,64,87,0.7), rgba(29,53,87,0.85));
  border: 1px solid rgba(168,218,220,0.14);
  border-radius: var(--wm-radius);
  display: grid;
  gap: 0.75rem;
  transition: transform 0.25s ease;
}
.page-about .ab-commit-card:hover{
  transform: translateY(-0.25rem);
}
.page-about .ab-commit-card__idx{
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--wm-yellow);
  letter-spacing: 0.1em;
}
.page-about .ab-commit-card h3{
  margin: 0;
  font-family: var(--wm-font-head);
  font-size: 1.25rem;
  font-weight: 800;
}
.page-about .ab-commit-card p{
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--wm-silver);
}

/* ===== 底部引导 ===== */
.page-about .ab-cta{
  padding: 3rem 0 4rem;
}
.page-about .ab-cta__inner{
  display: grid;
  gap: 2rem;
  padding: 2.5rem 1.5rem;
  background: linear-gradient(135deg, rgba(230,57,70,0.18), rgba(29,53,87,0.7));
  border-radius: var(--ab-radius-lg);
  border: 1px solid rgba(230,57,70,0.2);
}
.page-about .ab-cta__inner h2{
  margin: 0 0 0.5rem;
  font-family: var(--wm-font-head);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 900;
}
.page-about .ab-cta__inner p{
  margin: 0;
  color: var(--wm-silver);
  line-height: 1.7;
}
.page-about .ab-cta__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
}

/* ===== 响应式 ===== */
@media (min-width: 640px){
  .page-about .ab-hero__stats{
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .ab-hero__stat{
    display: grid;
    gap: 0.5rem;
  }
  .page-about .ab-hero__label{
    text-align: left;
    max-width: none;
  }
  .page-about .ab-qualification__grid{
    grid-template-columns: repeat(2, 1fr);
  }
  .page-about .ab-commit__grid{
    grid-template-columns: repeat(2, 1fr);
  }
  .page-about .ab-cta__inner{
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (min-width: 1024px){
  .page-about .ab-hero{
    padding: 3.5rem 0 4rem;
  }
  .page-about .ab-hero::before{
    display: block;
  }
  .page-about .ab-hero__grid{
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 4rem;
    align-items: center;
  }
  .page-about .ab-hero__stats{
    grid-template-columns: 1fr;
  }
  .page-about .ab-hero__stat:nth-child(2){
    transform: translateX(-0.75rem);
  }
  .page-about .ab-hero__stat:nth-child(3){
    transform: translateX(0.75rem);
  }
  .page-about .ab-section{
    padding: 4.5rem 0;
  }
  .page-about .ab-history__grid{
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 4rem;
  }
  .page-about .ab-service-band__inner{
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 4rem;
    align-items: center;
  }
  .page-about .ab-team__grid{
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 4rem;
    align-items: center;
  }
  .page-about .ab-qualification__grid{
    grid-template-columns: minmax(0, 5fr) minmax(0, 3fr) minmax(0, 4fr);
    align-items: center;
    gap: 1.5rem;
  }
  .page-about .ab-commit__grid{
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
  }
  .page-about .ab-commit-card:nth-child(even){
    transform: translateY(1.25rem);
  }
  .page-about .ab-commit-card:nth-child(even):hover{
    transform: translateY(1rem);
  }
}