.page-about {
  --about-muted: #5A6478;
  --about-line-dark: rgba(255, 255, 255, 0.12);
  --about-line-gold: rgba(255, 215, 0, 0.4);
  background: var(--color-bg);
}

/* 首屏数据面板 */
.page-about .about-hero {
  background:
    radial-gradient(60% 50% at 88% 10%, rgba(255, 215, 0, 0.07) 0%, transparent 60%),
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    var(--color-primary-deep);
  background-size: auto, 32px 32px, 32px 32px, auto;
  border-top: 4px solid var(--color-accent);
  padding: 28px 0 52px;
}
.page-about .about-hero .breadcrumb {
  margin-bottom: 4px;
}
.page-about .about-hero .breadcrumb a {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
}
.page-about .about-hero .breadcrumb a:hover {
  color: var(--color-accent);
}
.page-about .about-hero .breadcrumb__sep {
  color: rgba(255, 255, 255, 0.4);
}
.page-about .about-hero .breadcrumb__current {
  color: var(--color-accent);
}
.page-about .about-hero__grid {
  display: grid;
  gap: 36px;
  margin-top: 32px;
}
.page-about .about-hero__intro .section-head__kicker {
  color: var(--color-accent);
}
.page-about .about-hero__intro h1 {
  font-family: var(--font-head);
  font-size: clamp(32px, 7vw, 50px);
  line-height: 1.1;
  color: var(--color-white);
  margin: 10px 0 18px;
}
.page-about .about-hero__intro h1 span {
  color: var(--color-accent);
}
.page-about .about-hero__desc {
  font-size: 16px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.78);
  max-width: 56ch;
  margin: 0 0 24px;
}
.page-about .about-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-hero__panel {
  border: 1px solid var(--about-line-gold);
  background: var(--color-primary);
  padding: 20px;
  position: relative;
}
.page-about .about-hero__panel::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 24px;
  width: 72px;
  height: 4px;
  background: var(--color-accent);
}
.page-about .about-hero__panel-top {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--about-line-dark);
  margin-bottom: 16px;
}
.page-about .about-hero__mark {
  width: 24px;
  height: 24px;
  background: var(--color-accent);
  color: var(--color-primary-deep);
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 12px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}
.page-about .about-hero__panel-title {
  color: var(--color-white);
  font-weight: 600;
  font-size: 14px;
}
.page-about .about-hero__domain {
  margin-left: auto;
  font-family: var(--font-data);
  font-size: 11px;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.page-about .about-hero__panel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.page-about .about-hero__stat {
  background: rgba(255, 255, 255, 0.05);
  border-left: 2px solid var(--color-accent);
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.page-about .about-hero__stat .display-num {
  font-size: 30px;
  line-height: 1;
}
.page-about .about-hero__stat .data-label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.68);
}
.page-about .about-hero__panel-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.5);
  border-top: 1px solid var(--about-line-dark);
  padding-top: 12px;
}

/* 品牌使命 */
.page-about .about-mission__head {
  display: grid;
  gap: 24px;
  margin-bottom: 40px;
}
.page-about .about-mission__title h2 {
  font-family: var(--font-head);
  font-size: 28px;
  line-height: 1.25;
  margin: 8px 0 0;
  color: var(--color-primary);
}
.page-about .about-mission__lead p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--about-muted);
  margin: 0 0 12px;
}
.page-about .about-mission__lead p:last-child {
  margin-bottom: 0;
}
.page-about .about-mission__pillars {
  display: grid;
  gap: 16px;
}
.page-about .about-mission__pillar {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  padding: 24px;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.page-about .about-mission__pillar:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
  box-shadow: 0 12px 24px rgba(10, 31, 68, 0.08);
}
.page-about .about-mission__num {
  display: inline-block;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  background: var(--color-primary);
  padding: 4px 8px;
  margin-bottom: 14px;
}
.page-about .about-mission__pillar h3 {
  font-family: var(--font-head);
  font-size: 18px;
  margin: 0 0 8px;
  color: var(--color-primary);
}
.page-about .about-mission__pillar p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-text);
  margin: 0;
}

/* 发展历程 */
.page-about .about-history {
  background: var(--color-primary);
}
.page-about .about-history .section-head h2,
.page-about .about-cred .section-head h2 {
  color: var(--color-white);
  font-size: 28px;
  font-family: var(--font-head);
  margin: 8px 0 0;
}
.page-about .about-history__media {
  max-width: 600px;
  margin: 28px 0 36px;
  border: 1px solid var(--about-line-dark);
  padding: 8px;
  background: rgba(255, 255, 255, 0.04);
}
.page-about .about-history__media img {
  display: block;
  width: 100%;
  height: auto;
}
.page-about .timeline__hint {
  font-family: var(--font-data);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  margin: 0 0 12px;
  letter-spacing: 0.08em;
}
.page-about .timeline__window {
  overflow-x: auto;
  padding-bottom: 10px;
  scrollbar-width: thin;
  scrollbar-color: var(--color-accent) rgba(255, 255, 255, 0.1);
  scroll-snap-type: x mandatory;
  outline: none;
}
.page-about .timeline__window:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}
.page-about .timeline__scroll {
  width: 1560px;
  max-width: none;
}
.page-about .timeline__svg {
  display: block;
}
.page-about .timeline__track {
  display: flex;
  gap: 24px;
}
.page-about .timeline__item {
  flex: 0 0 240px;
  scroll-snap-align: start;
}
.page-about .timeline__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 12px;
  padding: 0 4px;
}
.page-about .timeline__idx {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 12px;
  color: var(--color-accent);
}
.page-about .timeline__period {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.7);
}
.page-about .timeline__card {
  background: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.7);
  padding: 20px;
  min-height: 176px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}
.page-about .timeline__card h3 {
  font-family: var(--font-head);
  font-size: 16px;
  line-height: 1.35;
  color: var(--color-primary);
  margin: 0 0 8px;
}
.page-about .timeline__card p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-text);
  margin: 0;
}
.page-about .timeline__card-link {
  display: inline-block;
  margin-top: auto;
  padding-top: 12px;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid var(--color-primary);
  align-self: flex-start;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.page-about .timeline__card-link:hover {
  color: var(--color-primary-deep);
  border-color: var(--color-primary-deep);
}
.page-about .about-history__foot {
  margin-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding: 20px 0 0;
  border-top: 1px solid var(--about-line-dark);
}
.page-about .about-history__foot p {
  color: rgba(255, 255, 255, 0.75);
  margin: 0;
  font-size: 15px;
}

/* 服务数据 */
.page-about .about-data__grid {
  display: grid;
  gap: 32px;
}
.page-about .about-data__content h2 {
  font-family: var(--font-head);
  font-size: 28px;
  margin: 8px 0 12px;
  color: var(--color-primary);
}
.page-about .about-data__desc {
  font-size: 16px;
  line-height: 1.7;
  color: var(--about-muted);
  margin: 0;
  max-width: 58ch;
}
.page-about .about-data__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 28px;
}
.page-about .about-data__stat {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-left: 4px solid var(--color-accent);
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.page-about .about-data__stat .display-num {
  font-size: 30px;
  line-height: 1;
}
.page-about .about-data__media {
  border: 1px solid var(--color-line);
  padding: 8px;
  background: var(--color-white);
}
.page-about .about-data__media img {
  display: block;
  width: 100%;
  height: auto;
}

/* 资质与认证 */
.page-about .about-cred {
  background: var(--color-primary);
}
.page-about .about-cred__grid {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}
.page-about .about-cred__item {
  background: var(--color-primary-light);
  border: 1px solid var(--about-line-dark);
  padding: 24px 20px;
  position: relative;
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}
.page-about .about-cred__item:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
}
.page-about .about-cred__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  background: var(--color-accent);
  color: var(--color-primary-deep);
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.02em;
  border-radius: 2px;
  position: relative;
}
.page-about .about-cred__badge::after {
  content: '';
  position: absolute;
  inset: 4px;
  border: 1px solid var(--color-primary-deep);
}
.page-about .about-cred__item h3 {
  font-family: var(--font-head);
  font-size: 17px;
  color: var(--color-white);
  margin: 16px 0 8px;
}
.page-about .about-cred__item p {
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.74);
  margin: 0;
}

/* 团队构成 */
.page-about .about-team {
  background: var(--color-white);
}
.page-about .about-team__grid {
  display: grid;
  gap: 32px;
}
.page-about .about-team__content h2 {
  font-family: var(--font-head);
  font-size: 28px;
  margin: 8px 0 12px;
  color: var(--color-primary);
}
.page-about .about-team__desc {
  font-size: 16px;
  line-height: 1.7;
  color: var(--about-muted);
  margin: 0 0 24px;
}
.page-about .about-team__roles {
  display: flex;
  gap: 12px;
  margin: 0 0 20px;
}
.page-about .about-team__role {
  flex: 1;
  border: 1px solid var(--color-line);
  padding: 16px 12px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--color-bg);
}
.page-about .about-team__role:first-child {
  background: var(--color-accent);
  border-color: var(--color-accent);
}
.page-about .about-team__role:first-child .data-label {
  color: var(--color-primary-deep);
  font-weight: 600;
}
.page-about .about-team__role .display-num {
  font-size: 28px;
  line-height: 1;
}
.page-about .about-team__note {
  font-size: 14px;
  line-height: 1.65;
  color: var(--about-muted);
  margin: 0 0 20px;
}
.page-about .about-team__media {
  border: 1px solid var(--color-line);
  padding: 8px;
  background: var(--color-bg);
}
.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
}

/* 底部指引 */
.page-about .about-cta {
  background: var(--color-primary);
  border-top: 4px solid var(--color-accent);
}
.page-about .about-cta__inner {
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-items: flex-start;
}
.page-about .about-cta h2 {
  font-family: var(--font-head);
  font-size: 22px;
  line-height: 1.3;
  color: var(--color-white);
  margin: 6px 0 8px;
}
.page-about .about-cta p:not(.section-head__kicker) {
  font-size: 15px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.76);
  margin: 0;
  max-width: 64ch;
}

/* 平板及以上 */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding-top: 40px;
    padding-bottom: 64px;
  }
  .page-about .about-hero__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
    align-items: stretch;
  }
  .page-about .about-hero__intro {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  .page-about .about-hero__panel {
    padding: 24px;
  }
  .page-about .about-hero__stat .display-num {
    font-size: 34px;
  }
  .page-about .about-mission__head {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: end;
  }
  .page-about .about-mission__title h2 {
    font-size: 36px;
  }
  .page-about .about-mission__pillars {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
  .page-about .about-history__media {
    max-width: 460px;
    margin-left: auto;
  }
  .page-about .about-data__grid {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
    align-items: center;
  }
  .page-about .about-data__content h2 {
    font-size: 32px;
  }
  .page-about .about-data__stat .display-num {
    font-size: 34px;
  }
  .page-about .about-cred__grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  .page-about .about-cred__item h3 {
    font-size: 18px;
  }
  .page-about .about-team__grid {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
  }
  .page-about .about-team__content h2 {
    font-size: 32px;
  }
  .page-about .about-cta__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-about .about-cred__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}