.page-about {
  --pa-neon: #39FF14;
  --pa-purple: #9B59B6;
  --pa-bg: #0A1F44;
  --pa-deep: #071832;
  --pa-light: #F5F7FA;
  --pa-ink: #1A2B4C;
  --pa-muted: #8B9BB4;
  --pa-white: #FFFFFF;
}

/* ===== 面包屑 ===== */
.page-about .breadcrumb {
  position: relative;
  z-index: 2;
  padding-top: calc(var(--header-height, 88px) + 20px);
  margin-bottom: 8px;
}

.page-about .breadcrumb__link {
  color: rgba(255,255,255,.62);
  text-decoration: none;
  font-size: .86rem;
  transition: color .2s var(--ease);
}

.page-about .breadcrumb__link:hover,
.page-about .breadcrumb__link:focus {
  color: var(--pa-neon);
}

.page-about .breadcrumb__sep {
  color: rgba(255,255,255,.35);
  margin: 0 6px;
  font-size: .86rem;
}

.page-about .breadcrumb__current {
  color: rgba(255,255,255,.85);
  font-size: .86rem;
  font-weight: 600;
}

/* ===== Hero 首屏 ===== */
.page-about .about-hero {
  background:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px),
    radial-gradient(1100px 540px at 82% 18%, rgba(155,89,182,.20) 0%, transparent 52%),
    var(--pa-bg);
  background-size: 32px 32px, 32px 32px, 100% 100%, 100% 100%;
  position: relative;
  overflow: hidden;
  padding: 0 0 clamp(44px, 8vw, 96px);
  color: var(--pa-white);
}

.page-about .about-hero::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--pa-neon) 0 28%, transparent 28% 42%, var(--pa-purple) 42% 62%, transparent 62% 74%, var(--pa-neon) 74% 100%);
  opacity: .5;
}

.page-about .about-hero::after {
  content: '';
  position: absolute;
  right: -70px;
  top: 0;
  width: 26%;
  height: 100%;
  background: linear-gradient(135deg, transparent 0%, rgba(57,255,20,.05) 58%, rgba(57,255,20,.1) 100%);
  transform: skewX(-12deg);
  pointer-events: none;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 34px;
  position: relative;
  z-index: 1;
  align-items: center;
}

.page-about .about-hero__copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-about .about-hero__title {
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 3.2vw, 2rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: .02em;
  margin: 10px 0 0;
  color: var(--pa-white);
}

.page-about .about-hero__lead {
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 6.4vw, 4.2rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .02em;
  line-height: 1.08;
  margin: 6px 0 18px;
  color: var(--pa-white);
}

.page-about .about-hero__accent {
  font-style: normal;
  color: var(--pa-neon);
}

.page-about .about-hero__desc {
  font-size: 1rem;
  line-height: 1.75;
  color: rgba(255,255,255,.78);
  max-width: 54ch;
  margin-bottom: 28px;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
}

.page-about .about-hero__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: .94rem;
  color: var(--pa-white);
  text-decoration: none;
  border-bottom: 2px solid rgba(255,255,255,.32);
  padding-bottom: 4px;
  transition: border-color .25s var(--ease), color .25s var(--ease);
}

.page-about .about-hero__link:hover,
.page-about .about-hero__link:focus {
  border-color: var(--pa-neon);
  color: var(--pa-neon);
}

.page-about .about-hero__media {
  margin: 0;
  position: relative;
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0 0 0 24px;
  border: 1px solid rgba(255,255,255,.12);
  object-fit: cover;
}

.page-about .about-hero__media::before {
  content: '';
  position: absolute;
  inset: 12px -12px -12px 12px;
  border: 2px solid rgba(57,255,20,.35);
  border-radius: 0 0 0 24px;
  z-index: -1;
  pointer-events: none;
}

/* ===== 天津基因 ===== */
.page-about .about-tianjin {
  background: var(--pa-deep);
  color: var(--pa-white);
  position: relative;
  overflow: hidden;
  padding: clamp(56px, 8vw, 108px) 0;
}

.page-about .about-tianjin .section__heading,
.page-about .about-tianjin .section__subtitle {
  color: var(--pa-white);
}

.page-about .about-tianjin .section__subtitle {
  color: rgba(255,255,255,.72);
  max-width: 60ch;
  margin-left: auto;
  margin-right: auto;
}

.page-about .about-tianjin__grid {
  display: grid;
  gap: 36px;
  align-items: center;
  margin-top: 40px;
  position: relative;
  z-index: 1;
}

.page-about .about-tianjin__media {
  margin: 0;
  position: relative;
}

.page-about .about-tianjin__media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid rgba(155,89,182,.4);
  object-fit: cover;
}

.page-about .about-tianjin__content p {
  color: rgba(255,255,255,.8);
  line-height: 1.75;
  margin-bottom: 18px;
}

.page-about .about-tianjin__list {
  list-style: none;
  padding: 0;
  margin: 0 0 22px;
}

.page-about .about-tianjin__list li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 10px;
  color: rgba(255,255,255,.82);
  line-height: 1.65;
  font-size: .96rem;
}

.page-about .about-tianjin__list li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 10px;
  width: 10px;
  height: 10px;
  background: var(--pa-purple);
  transform: rotate(45deg);
}

.page-about .about-tianjin__address {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-style: normal;
  font-family: var(--font-mono);
  font-size: .9rem;
  color: rgba(255,255,255,.72);
  border: 1px solid rgba(155,89,182,.48);
  border-radius: 8px;
  padding: 10px 16px;
  background: rgba(155,89,182,.08);
}

.page-about .about-tianjin__address::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--pa-neon);
  border-radius: 50%;
  flex-shrink: 0;
}

.page-about .about-tianjin__deco {
  position: absolute;
  left: 0;
  bottom: 18px;
  width: 100%;
  height: 120px;
  opacity: .55;
  pointer-events: none;
}

/* ===== 发展里程碑 ===== */
.page-about .about-milestones {
  background: var(--pa-light);
  color: var(--pa-ink);
  padding: clamp(56px, 8vw, 104px) 0;
}

.page-about .about-milestones .section__subtitle {
  color: var(--pa-muted);
  max-width: 60ch;
  margin-left: auto;
  margin-right: auto;
}

.page-about .about-milestones__timeline {
  position: relative;
  margin-top: 44px;
}

.page-about .about-milestones__timeline::before {
  content: '';
  position: absolute;
  left: 84px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--pa-neon) 0%, var(--pa-purple) 100%);
  opacity: .32;
  z-index: 0;
}

.page-about .about-milestones__item {
  display: grid;
  grid-template-columns: 68px 32px minmax(0, 1fr);
  gap: 0;
  margin-bottom: 30px;
  position: relative;
}

.page-about .about-milestones__year {
  text-align: right;
  padding: 16px 12px 0 0;
  font-family: var(--font-mono);
  font-size: 1.38rem;
  font-weight: 700;
  color: var(--pa-ink);
  line-height: 1.2;
}

.page-about .about-milestones__node {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 3px solid var(--pa-neon);
  background: var(--pa-light);
  margin: 22px auto 0;
  position: relative;
  z-index: 1;
  box-shadow: 0 0 0 4px rgba(57,255,20,.14);
  transition: background .25s var(--ease), box-shadow .25s var(--ease);
}

.page-about .about-milestones__card {
  background: #FFFFFF;
  border-radius: 4px;
  padding: 20px 20px 24px;
  border-top: 3px solid var(--pa-purple);
  box-shadow: 0 8px 24px rgba(10,31,68,.08);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
}

.page-about .about-milestones__item:hover .about-milestones__card,
.page-about .about-milestones__item:focus-within .about-milestones__card {
  transform: translateX(6px);
  box-shadow: 0 12px 32px rgba(10,31,68,.14);
  border-top-color: var(--pa-neon);
}

.page-about .about-milestones__item:hover .about-milestones__node,
.page-about .about-milestones__item:focus-within .about-milestones__node {
  background: var(--pa-neon);
  box-shadow: 0 0 0 6px rgba(57,255,20,.22);
}

.page-about .about-milestones__tag {
  display: inline-block;
  font-size: .78rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 4px;
  background: rgba(155,89,182,.1);
  color: var(--pa-purple);
  letter-spacing: .04em;
  margin-bottom: 10px;
}

.page-about .about-milestones__card h3 {
  font-family: var(--font-head);
  font-size: 1.3rem;
  font-weight: 600;
  margin: 0 0 8px;
  color: var(--pa-ink);
}

.page-about .about-milestones__card p {
  font-size: .95rem;
  line-height: 1.68;
  color: var(--pa-muted);
  margin: 0;
}

/* ===== 技术实力与数据服务 ===== */
.page-about .about-tech {
  background:
    radial-gradient(900px 460px at 88% 8%, rgba(57,255,20,.08) 0%, transparent 52%),
    var(--pa-bg);
  color: var(--pa-white);
  padding: clamp(56px, 8vw, 104px) 0;
}

.page-about .about-tech .section__heading,
.page-about .about-tech .section__subtitle {
  color: var(--pa-white);
}

.page-about .about-tech .section__subtitle {
  color: rgba(255,255,255,.72);
  max-width: 60ch;
  margin-left: auto;
  margin-right: auto;
}

.page-about .about-tech__grid {
  display: grid;
  gap: 40px;
  align-items: center;
  margin-top: 40px;
}

.page-about .about-tech__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}

.page-about .about-tech__stat {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 10px;
  padding: 20px 10px 18px;
  text-align: center;
}

.page-about .about-tech__stat .data-block__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 4.6vw, 2.6rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--pa-neon);
}

.page-about .about-tech__stat .data-block__label {
  display: block;
  margin-top: 8px;
  font-size: .84rem;
  color: rgba(255,255,255,.68);
  letter-spacing: .04em;
}

.page-about .about-tech__unit {
  font-size: .58em;
  font-weight: 500;
  color: rgba(255,255,255,.48);
  margin-left: 2px;
}

.page-about .about-tech__desc {
  font-size: 1rem;
  line-height: 1.75;
  color: rgba(255,255,255,.8);
  margin-bottom: 24px;
  max-width: 58ch;
}

.page-about .about-tech__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 26px;
}

.page-about .about-tech__badge {
  display: inline-block;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .03em;
  padding: 6px 14px;
  border-radius: 6px;
}

.page-about .about-tech__badge--neon {
  color: var(--pa-neon);
  background: rgba(57,255,20,.10);
  border: 1px solid rgba(57,255,20,.35);
}

.page-about .about-tech__badge--purple {
  color: #C39BD3;
  background: rgba(155,89,182,.14);
  border: 1px solid rgba(155,89,182,.4);
}

.page-about .about-tech__media {
  margin: 0;
  position: relative;
}

.page-about .about-tech__media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid rgba(57,255,20,.2);
  object-fit: cover;
}

.page-about .about-tech__media::after {
  content: '';
  position: absolute;
  right: -10px;
  bottom: -10px;
  width: 72%;
  height: 72%;
  border: 2px solid rgba(155,89,182,.3);
  border-radius: 12px;
  z-index: -1;
  pointer-events: none;
}

/* ===== 企业责任与荣誉 ===== */
.page-about .about-honors {
  background: var(--pa-light);
  color: var(--pa-ink);
  padding: clamp(56px, 8vw, 104px) 0;
}

.page-about .about-honors .section__subtitle {
  color: var(--pa-muted);
  max-width: 60ch;
  margin-left: auto;
  margin-right: auto;
}

.page-about .about-honors__grid {
  display: grid;
  gap: 20px;
  margin-top: 44px;
}

.page-about .about-honors__card {
  background: #FFFFFF;
  border-radius: 12px;
  padding: 28px 24px;
  border-left: 4px solid var(--pa-purple);
  box-shadow: 0 6px 18px rgba(10,31,68,.06);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}

.page-about .about-honors__card:hover,
.page-about .about-honors__card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(10,31,68,.10);
}

.page-about .about-honors__icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(155,89,182,.1);
  color: var(--pa-purple);
  margin-bottom: 16px;
}

.page-about .about-honors__card h3 {
  font-family: var(--font-head);
  font-size: 1.28rem;
  font-weight: 600;
  margin: 0 0 8px;
  color: var(--pa-ink);
}

.page-about .about-honors__card p {
  font-size: .94rem;
  line-height: 1.66;
  color: var(--pa-muted);
  margin: 0;
}

/* 团队规模 */
.page-about .about-honors__team {
  background:
    radial-gradient(360px 220px at 92% 0%, rgba(155,89,182,.3) 0%, transparent 70%),
    var(--pa-bg);
  color: var(--pa-white);
  border-radius: 20px;
  padding: 36px 24px;
  margin-top: 44px;
  position: relative;
  overflow: hidden;
}

.page-about .about-honors__team::after {
  content: '';
  position: absolute;
  right: -40px;
  bottom: -60px;
  width: 200px;
  height: 120px;
  background: linear-gradient(135deg, transparent 40%, rgba(57,255,20,.08) 100%);
  transform: skewX(-18deg);
  pointer-events: none;
}

.page-about .about-honors__team-figure {
  display: flex;
  align-items: baseline;
  gap: 12px;
  position: relative;
  z-index: 1;
}

.page-about .about-honors__team-num {
  font-family: var(--font-mono);
  font-size: clamp(3.8rem, 10vw, 6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--pa-neon);
}

.page-about .about-honors__team-label {
  font-size: 1.3rem;
  font-weight: 600;
  color: rgba(255,255,255,.9);
}

.page-about .about-honors__team-meter {
  height: 8px;
  border-radius: 4px;
  background: rgba(255,255,255,.1);
  margin: 20px 0 16px;
  overflow: hidden;
  position: relative;
  z-index: 1;
}

.page-about .about-honors__team-meter-fill {
  display: block;
  height: 100%;
  width: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--pa-neon) 0%, var(--pa-purple) 100%);
}

.page-about .about-honors__team-note {
  color: rgba(255,255,255,.72);
  font-size: .94rem;
  line-height: 1.62;
  margin-bottom: 18px;
  position: relative;
  z-index: 1;
}

.page-about .about-honors__contact {
  display: inline-block;
  color: var(--pa-neon);
  font-weight: 600;
  font-size: .94rem;
  text-decoration: none;
  border-bottom: 2px solid rgba(57,255,20,.32);
  padding-bottom: 2px;
  transition: color .25s var(--ease), border-color .25s var(--ease);
  position: relative;
  z-index: 1;
}

.page-about .about-honors__contact:hover,
.page-about .about-honors__contact:focus {
  color: var(--pa-white);
  border-bottom-color: var(--pa-neon);
}

/* ===== 桌面端增强 ===== */
@media (min-width: 900px) {
  .page-about .about-hero {
    padding-bottom: clamp(48px, 7vw, 108px);
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 52px;
    padding-top: 52px;
  }

  .page-about .about-hero__lead {
    font-size: clamp(2.8rem, 5vw, 4.4rem);
  }

  .page-about .about-hero__desc {
    font-size: 1.05rem;
  }

  .page-about .about-tianjin__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 52px;
  }

  .page-about .about-tianjin__media {
    order: -1;
  }

  .page-about .about-milestones__item {
    grid-template-columns: 160px 48px minmax(0, 1fr);
    margin-bottom: 36px;
  }

  .page-about .about-milestones__timeline::before {
    left: 184px;
  }

  .page-about .about-milestones__year {
    font-size: 2rem;
    padding-top: 18px;
  }

  .page-about .about-milestones__card {
    padding: 26px 28px 28px;
  }

  .page-about .about-milestones__card p {
    font-size: 1rem;
  }

  .page-about .about-tech__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 56px;
  }

  .page-about .about-tech__stats {
    gap: 16px;
  }

  .page-about .about-honors__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-about .about-honors__team {
    padding: 48px 56px;
    display: grid;
    grid-template-columns: auto 1fr;
    column-gap: 44px;
    row-gap: 14px;
    align-items: center;
  }

  .page-about .about-honors__team-figure {
    grid-row: 1 / span 2;
  }

  .page-about .about-honors__team-meter {
    margin: 0;
    align-self: end;
  }

  .page-about .about-honors__team-copy {
    grid-column: 2;
    align-self: start;
  }

  .page-about .about-honors__team-note {
    margin-bottom: 14px;
  }
}