.page-about {
  --about-band-indigo: linear-gradient(148deg, rgba(75, 46, 131, 0.62), rgba(7, 26, 58, 0.94) 60%);
  --about-band-wine: linear-gradient(148deg, rgba(140, 29, 64, 0.55), rgba(7, 26, 58, 0.95) 62%);
  --about-hair: rgba(102, 242, 255, 0.24);
  --about-panel: rgba(4, 18, 42, 0.62);
  display: block;
}

.page-about #origin,
.page-about #timeline,
.page-about #business,
.page-about #team,
.page-about #partners,
.page-about #region {
  scroll-margin-top: 6rem;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(1.25rem, 3.5vw, 2.5rem) clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -18%;
  width: min(680px, 88vw);
  height: min(680px, 88vw);
  background: radial-gradient(circle at 35% 35%, rgba(0, 229, 255, 0.22), transparent 64%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(102, 242, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(102, 242, 255, 0.07) 1px, transparent 1px);
  background-size: 68px 68px;
  -webkit-mask-image: radial-gradient(circle at 72% 26%, #000 0%, transparent 68%);
  mask-image: radial-gradient(circle at 72% 26%, #000 0%, transparent 68%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}

.page-about .about-hero__text > * + * {
  margin-top: 1rem;
}

.page-about .about-hero__text .breadcrumb {
  margin-bottom: 0.5rem;
}

.page-about .about-kicker {
  font-size: 0.75rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--cyan-soft);
  margin: 0;
}

.page-about .about-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6.2vw, 3.5rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0;
  max-width: 18ch;
}

.page-about .about-title em {
  font-style: normal;
  color: var(--gold);
  border-bottom: 6px solid rgba(0, 229, 255, 0.45);
  padding-bottom: 0.06em;
}

.page-about .about-lede {
  font-size: clamp(1rem, 1.5vw, 1.0625rem);
  line-height: 1.85;
  color: var(--ink-dim);
  max-width: 52ch;
  margin: 0;
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem 1rem;
  margin-top: 1.5rem;
}

.page-about .about-fact {
  border-left: 3px solid var(--gold);
  padding-left: 0.7rem;
}

.page-about .about-fact__num {
  display: block;
  font-size: clamp(1.15rem, 3.2vw, 1.6rem);
  font-weight: 700;
  color: var(--gold);
  letter-spacing: -0.01em;
}

.page-about .about-fact__label {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.75rem;
  line-height: 1.4;
  color: var(--ink-faint);
}

.page-about .about-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

.page-about .about-hero__cover {
  position: relative;
  margin: 0;
  border: 2px solid var(--edge-strong);
  box-shadow: var(--hard-shadow);
  background: var(--panel);
  aspect-ratio: 3 / 4;
  overflow: hidden;
}

.page-about .about-hero__cover::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 42%;
  height: 8px;
  background: linear-gradient(90deg, var(--gold), var(--coral));
}

.page-about .about-hero__cover img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-index {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 0.5rem;
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  padding-bottom: 0.5rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-index::-webkit-scrollbar {
  display: none;
}

.page-about .about-index a {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--edge);
  background: rgba(14, 42, 90, 0.55);
  color: var(--ink-dim);
  font-size: 0.82rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-about .about-index a:hover,
.page-about .about-index a:focus-visible {
  color: var(--cyan);
  border-color: var(--edge-strong);
  box-shadow: var(--glow);
}

.page-about .about-index .mono {
  color: var(--cyan-soft);
  font-size: 0.72rem;
}

/* ---------- 章节头 ---------- */
.page-about .about-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem 1.15rem;
  align-items: start;
  padding-bottom: 0.9rem;
  margin-bottom: clamp(1.4rem, 3vw, 2.25rem);
  border-bottom: 2px solid var(--about-hair);
}

.page-about .about-head__num {
  font-size: clamp(2.2rem, 7vw, 4rem);
  font-weight: 700;
  line-height: 0.85;
  color: rgba(0, 229, 255, 0.26);
  transition: color 0.35s var(--ease), text-shadow 0.35s var(--ease);
}

.page-about .about-head.is-current .about-head__num {
  color: var(--cyan);
  text-shadow: 0 0 28px rgba(0, 229, 255, 0.6);
}

.page-about .about-head__body {
  display: grid;
  gap: 0.45rem;
}

.page-about .about-head__note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--cyan-soft);
  text-transform: uppercase;
}

.page-about .about-head__title {
  margin: 0;
  font-size: clamp(1.35rem, 3.6vw, 2.1rem);
  font-weight: 800;
  line-height: 1.28;
  color: var(--ink);
  letter-spacing: -0.005em;
}

/* ---------- 01 品牌起点 ---------- */
.page-about .about-origin__grid {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.5rem);
}

.page-about .about-origin__text p {
  margin: 0 0 1rem;
  line-height: 1.85;
  color: var(--ink-dim);
}

.page-about .about-origin__cards {
  display: grid;
  gap: 1rem;
}

.page-about .about-origin__cards .dossier {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.page-about .tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.35rem 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 02 发展历程 ---------- */
.page-about .about-timeline {
  background: var(--about-band-indigo);
  border-block: 2px solid var(--about-hair);
}

.page-about .about-timeline__figure {
  margin: 0 0 clamp(1.75rem, 3.5vw, 2.75rem);
  border: 2px solid var(--edge);
  box-shadow: var(--hard-shadow);
  background: var(--about-panel);
  overflow: hidden;
}

.page-about .about-timeline__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-timeline__figure figcaption {
  padding: 0.7rem 1rem;
  border-top: 1px solid var(--about-hair);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
}

.page-about .timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 1.75rem;
  list-style: none;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.4rem;
  bottom: 0.4rem;
  width: 2px;
  background: linear-gradient(180deg, rgba(0, 229, 255, 0.9), rgba(0, 229, 255, 0.12));
}

.page-about .timeline__item {
  position: relative;
  padding-bottom: 1.65rem;
}

.page-about .timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-1.75rem - 6px);
  top: 0.4rem;
  width: 10px;
  height: 10px;
  background: var(--void-deep);
  border: 2px solid var(--cyan);
  transform: rotate(45deg);
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.6);
}

.page-about .timeline__mark {
  margin: 0 0 0.3rem;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-about .timeline__title {
  margin: 0 0 0.4rem;
  font-size: clamp(1rem, 2.4vw, 1.15rem);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.45;
}

.page-about .timeline__text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--ink-dim);
  max-width: 58ch;
}

/* ---------- 03 业务板块 ---------- */
.page-about .business-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.page-about .biz-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.25rem 1.2rem 1.35rem;
  background: linear-gradient(160deg, rgba(14, 42, 90, 0.8), rgba(7, 26, 58, 0.92));
  border: 2px solid var(--about-hair);
  box-shadow: var(--hard-shadow);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-about .biz-card::before {
  content: "";
  position: absolute;
  inset: -2px -2px auto auto;
  width: 34px;
  height: 8px;
  background: var(--cyan);
  opacity: 0.9;
}

.page-about .biz-card:hover,
.page-about .biz-card:focus-within {
  transform: translate(-3px, -3px);
  border-color: var(--edge-strong);
  box-shadow: var(--hard-shadow), var(--glow);
}

.page-about .biz-card .tag {
  align-self: flex-start;
}

.page-about .biz-card__metric {
  margin: 0.15rem 0 0;
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -0.02em;
}

.page-about .biz-card__metric span {
  margin-left: 0.4rem;
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
}

.page-about .biz-card__title {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

.page-about .biz-card__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--ink-dim);
}

.page-about .about-business__more {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
}

/* ---------- 04 团队与研发 ---------- */
.page-about .about-team {
  background: var(--about-band-wine);
  border-block: 2px solid rgba(255, 90, 95, 0.24);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.5rem);
  align-items: start;
}

.page-about .about-team__text p {
  margin: 0 0 1rem;
  line-height: 1.85;
  color: var(--ink-dim);
}

.page-about .team-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 1.5rem 0 0;
}

.page-about .team-stat {
  padding: 0.85rem 0.9rem;
  border: 2px solid rgba(0, 229, 255, 0.28);
  background: rgba(11, 15, 23, 0.55);
}

.page-about .team-stat__num {
  display: block;
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.page-about .team-stat__label {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
}

.page-about .about-team__note {
  margin: 1.2rem 0 0;
  padding-left: 0.9rem;
  border-left: 3px solid var(--cyan);
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--ink-dim);
}

.page-about .about-team__figure {
  margin: 0;
  border: 2px solid var(--edge);
  box-shadow: var(--hard-shadow);
  background: var(--about-panel);
  overflow: hidden;
}

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

.page-about .about-team__figure figcaption {
  padding: 0.7rem 1rem;
  border-top: 1px solid var(--about-hair);
  font-size: 0.76rem;
  color: var(--ink-faint);
}

/* ---------- 05 合作生态与荣誉 ---------- */
.page-about .partner-nums {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

.page-about .partner-num {
  padding: 1.1rem 1.15rem;
  border-left: 4px solid var(--cyan);
  background: rgba(14, 42, 90, 0.5);
}

.page-about .partner-num__value {
  display: block;
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .partner-num__label {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink);
}

.page-about .partner-num__text {
  margin: 0.45rem 0 0;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--ink-dim);
}

.page-about .partner-split {
  display: grid;
  gap: 1rem;
}

.page-about .partner-block {
  padding: 1.3rem 1.2rem;
  border: 2px solid var(--about-hair);
  background: linear-gradient(160deg, rgba(75, 46, 131, 0.4), rgba(7, 26, 58, 0.9));
  box-shadow: var(--hard-shadow);
}

.page-about .partner-block--award {
  background: linear-gradient(160deg, rgba(140, 29, 64, 0.38), rgba(7, 26, 58, 0.92));
  border-color: rgba(255, 183, 3, 0.34);
}

.page-about .partner-block__title {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
}

.page-about .partner-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.page-about .partner-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.7rem;
  align-items: baseline;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--ink-dim);
}

.page-about .award-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.9rem;
}

.page-about .award-item {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: 0.8rem;
  align-items: baseline;
}

.page-about .award-item__num {
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
  text-align: right;
}

.page-about .award-item__text {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--ink-dim);
}

/* ---------- 06 服务地区与联系 ---------- */
.page-about .region-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

.page-about .region-card {
  padding: 1.25rem 1.2rem;
  border: 2px solid var(--about-hair);
  background: var(--about-panel);
  box-shadow: var(--hard-shadow);
}

.page-about .region-card__value {
  margin: 0 0 0.5rem;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .region-card__value span {
  margin-left: 0.45rem;
  font-size: 0.74rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
}

.page-about .region-card__title {
  margin: 0 0 0.5rem;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--ink);
}

.page-about .region-card__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--ink-dim);
}

.page-about .region-cta {
  display: grid;
  gap: 1.25rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 2px solid var(--edge-strong);
  background: linear-gradient(150deg, rgba(0, 229, 255, 0.14), rgba(14, 42, 90, 0.85) 58%);
  box-shadow: var(--hard-shadow), var(--glow);
}

.page-about .region-cta__title {
  margin: 0 0 0.6rem;
  font-size: clamp(1.15rem, 2.6vw, 1.4rem);
  font-weight: 800;
  color: var(--ink);
}

.page-about .region-cta__text {
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--ink-dim);
  max-width: 52ch;
}

.page-about .contact-list {
  display: grid;
  gap: 0.75rem;
}

.page-about .contact-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
}

.page-about .contact-item .mono {
  min-width: 2.4rem;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--cyan-soft);
}

.page-about .contact-item a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px dashed rgba(0, 229, 255, 0.5);
  word-break: break-all;
}

.page-about .contact-item a:hover,
.page-about .contact-item a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-about .region-cta__action {
  margin: 0;
}

.page-about .region-top {
  margin: clamp(1.5rem, 3vw, 2rem) 0 0;
  text-align: right;
}

.page-about .region-top a {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  text-decoration: none;
  border-bottom: 1px solid var(--about-hair);
  padding-bottom: 0.15rem;
}

.page-about .region-top a:hover,
.page-about .region-top a:focus-visible {
  color: var(--cyan);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .business-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .partner-nums {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .region-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.72fr);
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .page-about .about-origin__cards {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.25rem;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
  }

  .page-about .partner-split {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 1.25rem;
  }

  .page-about .region-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-about .region-cta__action {
    justify-self: end;
  }
}

@media (min-width: 1100px) {
  .page-about .business-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-origin__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-head {
    grid-template-columns: 7rem minmax(0, 1fr);
    gap: 1.5rem;
  }
}

@media (max-width: 480px) {
  .page-about .about-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .team-stats {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-about .partner-num__value {
    font-size: 1.8rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .biz-card,
  .page-about .about-head__num {
    transition: none;
  }
}