.page-about {
  --about-track-width: 280px;
  --about-stage-pad: 40px;
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ============================
   首屏 Hero
============================ */
.page-about .about-hero {
  position: relative;
  padding: 16px 0 56px;
  background:
    radial-gradient(ellipse at 85% 18%, rgba(255, 107, 53, 0.28) 0%, transparent 55%),
    linear-gradient(135deg, var(--c-deep) 0%, #14264c 100%);
  color: var(--c-white);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 8% 85%, rgba(255, 200, 73, 0.16) 0%, transparent 40%),
    radial-gradient(circle at 96% 70%, rgba(255, 69, 0, 0.12) 0%, transparent 32%);
  pointer-events: none;
  z-index: 1;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--c-primary) 0%, var(--c-gold) 60%, var(--c-gold) 100%);
  z-index: 2;
}

.page-about .about-hero .content-wrap {
  position: relative;
  z-index: 2;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 28px;
}

.page-about .about-hero .breadcrumb a,
.page-about .about-hero .breadcrumb span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  text-decoration: none;
}

.page-about .about-hero .breadcrumb a:hover {
  color: var(--c-gold);
}

.page-about .about-hero .breadcrumb__sep {
  margin: 0 8px;
  color: rgba(255, 255, 255, 0.4);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

.page-about .about-hero__content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}

.page-about .about-hero .section__label {
  color: var(--c-gold);
  margin-bottom: 4px;
}

.page-about .about-hero h1 {
  font-family: var(--font-title);
  font-size: 38px;
  line-height: 1.16;
  letter-spacing: -0.02em;
  margin: 0;
}

.page-about .about-hero__lead {
  font-size: 16px;
  line-height: 1.75;
  max-width: 48ch;
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

.page-about .about-hero__actions .btn--ghost {
  border-color: rgba(255, 255, 255, 0.45);
  color: var(--c-white);
}

.page-about .about-hero__media {
  margin: 0;
  border-radius: var(--r-card);
  overflow: hidden;
  box-shadow: var(--shadow-lift);
  border: 1px solid rgba(255, 255, 255, 0.16);
  min-width: 0;
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-hero .diag-line {
  position: absolute;
  left: 0;
  bottom: 26px;
  width: 180px;
  height: 10px;
  background: linear-gradient(120deg, var(--c-gold) 0%, rgba(255, 200, 73, 0.15) 90%);
  border-radius: 0 10px 10px 0;
  z-index: 3;
  pointer-events: none;
}

/* ============================
   非凡是谁
============================ */
.page-about .about-identity {
  padding: 68px 0 52px;
}

.page-about .about-identity__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-identity__note {
  border-left: 4px solid var(--c-primary);
  padding-left: 18px;
}

.page-about .about-identity__note h2 {
  font-family: var(--font-title);
  font-size: 28px;
  line-height: 1.25;
  color: var(--c-deep);
  margin: 12px 0 0;
}

.page-about .about-identity__body {
  display: grid;
  gap: 16px;
  font-size: 16px;
  line-height: 1.75;
}

.page-about .about-identity__lead {
  font-size: 19px;
  line-height: 1.7;
  color: var(--c-deep);
  font-weight: 700;
  margin: 0;
}

.page-about .about-identity__body p {
  margin: 0;
  color: var(--c-ink);
}

/* ============================
   服务足迹
============================ */
.page-about .about-stats {
  position: relative;
  padding: 64px 0;
  background:
    linear-gradient(120deg, rgba(255, 107, 53, 0.12), transparent 60%),
    var(--c-deep);
  overflow: hidden;
}

.page-about .about-stats::before {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 220px;
  height: 220px;
  border: 2px dashed rgba(255, 200, 73, 0.35);
  border-radius: 50%;
  pointer-events: none;
}

.page-about .about-stats__mega {
  position: absolute;
  right: -10px;
  top: 8px;
  font-family: var(--font-title);
  font-size: 110px;
  line-height: 1;
  color: rgba(255, 255, 255, 0.05);
  white-space: nowrap;
  user-select: none;
  pointer-events: none;
}

.page-about .about-stats__head {
  position: relative;
  z-index: 1;
  max-width: 660px;
  margin-bottom: 36px;
}

.page-about .about-stats .section__label {
  color: var(--c-gold);
}

.page-about .about-stats__head h2 {
  font-family: var(--font-title);
  font-size: 30px;
  line-height: 1.2;
  color: var(--c-white);
  margin: 10px 0 12px;
}

.page-about .about-stats__head p {
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.7;
  margin: 0;
}

.page-about .about-stats__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.page-about .about-stats__item {
  position: relative;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--r-card);
  padding: 22px 18px;
  overflow: hidden;
  transition: transform var(--ease), background var(--ease);
}

.page-about .about-stats__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--c-primary);
}

.page-about .about-stats__item:hover {
  transform: translateY(-3px);
  background: rgba(255, 255, 255, 0.09);
}

.page-about .about-stats__number {
  display: block;
  font-family: var(--font-title);
  font-size: 40px;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--c-primary);
}

.page-about .about-stats__label {
  display: block;
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.85);
}

/* ============================
   发展历程
============================ */
.page-about .about-timeline {
  padding: 72px 0;
}

.page-about .about-timeline__head {
  max-width: 680px;
  margin-bottom: 44px;
}

.page-about .about-timeline__head h2 {
  font-family: var(--font-title);
  font-size: 30px;
  line-height: 1.25;
  color: var(--c-deep);
  margin: 10px 0 12px;
}

.page-about .about-timeline__head p {
  color: var(--c-muted);
  line-height: 1.7;
  margin: 0;
}

.page-about .about-timeline__track {
  position: relative;
  display: grid;
  gap: 36px;
}

.page-about .about-timeline__track::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 8px;
  bottom: 8px;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--c-primary) 0%, var(--c-gold) 55%, var(--c-deep) 100%);
  opacity: 0.55;
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 40px;
  display: grid;
  gap: 14px;
}

.page-about .about-timeline__node {
  position: absolute;
  left: 2px;
  top: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--c-primary);
  border: 4px solid var(--c-white);
  box-shadow: 0 0 0 3px var(--c-primary);
  transition: transform var(--ease), box-shadow var(--ease);
}

.page-about .about-timeline__item:hover .about-timeline__node,
.page-about .about-timeline__item:focus-within .about-timeline__node {
  box-shadow: 0 0 0 6px rgba(255, 107, 53, 0.22);
  transform: scale(1.12);
}

.page-about .about-timeline__phase-label {
  display: block;
  font-family: var(--font-title);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--c-primary);
  margin-bottom: 4px;
}

.page-about .about-timeline__stage h3 {
  font-family: var(--font-title);
  font-size: 24px;
  color: var(--c-deep);
  margin: 0 0 4px;
}

.page-about .about-timeline__stage p {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--c-muted);
  margin: 0;
}

.page-about .about-timeline__card {
  background: var(--c-white);
  border-radius: var(--r-card);
  border-top: 3px solid var(--c-primary);
  box-shadow: var(--shadow-card);
  padding: 20px 22px;
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-ink);
}

.page-about .about-timeline__item:nth-child(2) .about-timeline__card {
  border-top-color: var(--c-gold);
}

.page-about .about-timeline__item:nth-child(3) .about-timeline__card {
  border-top-color: var(--c-deep);
}

/* ============================
   资质与认证
============================ */
.page-about .about-cert {
  padding: 64px 0;
  background: linear-gradient(180deg, var(--c-blue) 0%, var(--c-white) 100%);
}

.page-about .about-cert h2 {
  font-family: var(--font-title);
  font-size: 30px;
  line-height: 1.25;
  color: var(--c-deep);
  margin: 10px 0 12px;
}

.page-about .about-cert__lead {
  color: var(--c-muted);
  line-height: 1.75;
  margin: 0;
  max-width: 56ch;
}

.page-about .about-cert__grid {
  display: grid;
  gap: 36px;
}

.page-about .about-cert__badges {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.page-about .about-cert__badge {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 16px;
  align-items: start;
  background: var(--c-white);
  border: 1px solid rgba(15, 31, 61, 0.08);
  border-radius: var(--r-card);
  box-shadow: var(--shadow-card);
  padding: 20px;
  transition: border-color var(--ease), transform var(--ease), box-shadow var(--ease);
}

.page-about .about-cert__badge:hover,
.page-about .about-cert__badge:focus-visible {
  border-color: var(--c-gold);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}

.page-about .about-cert__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--c-deep);
  color: var(--c-gold);
  font-family: var(--font-title);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-about .about-cert__badge h3 {
  margin: 0;
  font-size: 17px;
  line-height: 1.4;
  color: var(--c-deep);
}

.page-about .about-cert__badge p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-muted);
}

.page-about .about-cert__figure {
  margin: 0;
  border-radius: var(--r-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  min-width: 0;
}

.page-about .about-cert__figure img {
  display: block;
  width: 100%;
  height: 100%;
  max-height: 560px;
  object-fit: cover;
}

/* ============================
   合作生态
============================ */
.page-about .about-partners {
  padding: 72px 0 64px;
}

.page-about .about-partners__head {
  max-width: 660px;
  margin-bottom: 36px;
}

.page-about .about-partners__head h2 {
  font-family: var(--font-title);
  font-size: 30px;
  line-height: 1.25;
  color: var(--c-deep);
  margin: 10px 0 12px;
}

.page-about .about-partners__head p {
  color: var(--c-muted);
  line-height: 1.7;
  margin: 0;
}

.page-about .about-partners__grid {
  display: grid;
  gap: 18px;
}

.page-about .about-partners__card {
  position: relative;
  background: var(--c-white);
  border-radius: var(--r-card);
  border-bottom: 4px solid var(--c-primary);
  box-shadow: var(--shadow-card);
  padding: 24px;
  overflow: hidden;
  transition: transform var(--ease), box-shadow var(--ease);
}

.page-about .about-partners__card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}

.page-about .about-partners__card:nth-child(2) {
  border-bottom-color: var(--c-gold);
}

.page-about .about-partners__card:nth-child(3) {
  border-bottom-color: var(--c-deep);
}

.page-about .about-partners__index {
  position: absolute;
  top: 18px;
  right: 20px;
  font-family: var(--font-title);
  font-size: 14px;
  letter-spacing: 0.12em;
  color: rgba(15, 31, 61, 0.22);
}

.page-about .about-partners__count {
  display: block;
  font-family: var(--font-title);
  font-size: 48px;
  line-height: 1;
  color: var(--c-primary);
  margin-bottom: 12px;
}

.page-about .about-partners__card h3 {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--c-deep);
}

.page-about .about-partners__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-muted);
}

/* ============================
   团队与文化
============================ */
.page-about .about-team {
  padding: 64px 0;
  background: var(--c-white);
}

.page-about .about-team__grid {
  display: grid;
  gap: 32px;
}

.page-about .about-team__content h2 {
  font-family: var(--font-title);
  font-size: 30px;
  line-height: 1.25;
  color: var(--c-deep);
  margin: 10px 0 12px;
}

.page-about .about-team__content p {
  color: var(--c-muted);
  line-height: 1.75;
}

.page-about .about-team__roles {
  list-style: none;
  margin: 24px 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-team__roles li {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--c-bg);
  border-radius: 14px;
  border-left: 4px solid var(--c-primary);
  padding: 14px 16px;
}

.page-about .about-team__roles strong {
  font-family: var(--font-title);
  font-size: 28px;
  line-height: 1;
  color: var(--c-primary);
  min-width: 38px;
}

.page-about .about-team__roles span {
  font-size: 14px;
  line-height: 1.5;
  color: var(--c-ink);
}

.page-about .about-team__quote {
  margin: 22px 0 0;
  padding: 18px 20px;
  border-left: 6px solid var(--c-gold);
  border-radius: var(--r-card);
  background: var(--c-deep);
  color: var(--c-white);
  font-size: 15px;
  line-height: 1.7;
}

.page-about .about-team__figure {
  margin: 0;
  border-radius: var(--r-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  min-width: 0;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
}

/* ============================
   信任与行动
============================ */
.page-about .about-trust {
  padding: 72px 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(255, 107, 53, 0.18), transparent 45%),
    linear-gradient(120deg, var(--c-deep) 0%, #1d2b52 100%);
}

.page-about .about-trust__inner {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 28px;
  padding: 36px 28px;
  text-align: center;
  color: var(--c-white);
}

.page-about .about-trust h2 {
  font-family: var(--font-title);
  font-size: 28px;
  line-height: 1.25;
  color: var(--c-white);
  margin: 0 0 12px;
}

.page-about .about-trust p {
  max-width: 62ch;
  margin: 0 auto 24px;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.75;
}

.page-about .about-trust__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.page-about .about-trust__actions .btn--ghost {
  border-color: rgba(255, 255, 255, 0.4);
  color: var(--c-white);
}

/* ============================
   桌面端增强（≥768px）
============================ */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 24px 0 84px;
  }

  .page-about .about-hero h1 {
    font-size: 60px;
  }

  .page-about .about-hero__lead {
    font-size: 17px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 60px;
    align-items: center;
  }

  .page-about .about-identity {
    padding: 96px 0 72px;
  }

  .page-about .about-identity__grid {
    grid-template-columns: 300px 1fr;
    gap: 60px;
  }

  .page-about .about-identity__note h2 {
    font-size: 36px;
  }

  .page-about .about-identity__body {
    max-width: 72ch;
  }

  .page-about .about-stats {
    padding: 88px 0;
  }

  .page-about .about-stats__mega {
    font-size: 180px;
    right: 20px;
    top: 10px;
  }

  .page-about .about-stats__head h2 {
    font-size: 36px;
  }

  .page-about .about-stats__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }

  .page-about .about-stats__item {
    padding: 32px 24px;
  }

  .page-about .about-stats__number {
    font-size: 56px;
  }

  .page-about .about-timeline {
    padding: 96px 0;
  }

  .page-about .about-timeline__head h2 {
    font-size: 36px;
  }

  .page-about .about-timeline__track {
    gap: 24px;
  }

  .page-about .about-timeline__track::before {
    left: calc(var(--about-track-width) / 2 - 1.5px);
  }

  .page-about .about-timeline__item {
    grid-template-columns: var(--about-track-width) 1fr;
    gap: 28px;
    padding-left: 0;
  }

  .page-about .about-timeline__node {
    top: 50%;
    left: calc(var(--about-track-width) / 2 - 10px);
    transform: translateY(-50%);
  }

  .page-about .about-timeline__item:hover .about-timeline__node,
  .page-about .about-timeline__item:focus-within .about-timeline__node {
    transform: translateY(-50%) scale(1.12);
  }

  .page-about .about-timeline__stage {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    text-align: right;
    padding-right: var(--about-stage-pad);
  }

  .page-about .about-timeline__card {
    align-self: center;
  }

  .page-about .about-cert {
    padding: 96px 0;
  }

  .page-about .about-cert h2 {
    font-size: 36px;
  }

  .page-about .about-cert__grid {
    grid-template-columns: 1fr 0.62fr;
    gap: 60px;
    align-items: center;
  }

  .page-about .about-cert__figure img {
    height: 100%;
    max-height: 640px;
    object-fit: cover;
  }

  .page-about .about-partners {
    padding: 96px 0;
  }

  .page-about .about-partners__head h2 {
    font-size: 36px;
  }

  .page-about .about-partners__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-about .about-team {
    padding: 96px 0;
  }

  .page-about .about-team__grid {
    grid-template-columns: 1fr 0.85fr;
    gap: 64px;
    align-items: center;
  }

  .page-about .about-team__content h2 {
    font-size: 36px;
  }

  .page-about .about-trust {
    padding: 96px 0;
  }

  .page-about .about-trust__inner {
    padding: 56px 48px;
  }

  .page-about .about-trust h2 {
    font-size: 36px;
  }
}