.page-about {
  background: var(--night);
  color: var(--ink);
  overflow-x: hidden;
}

/* 面包屑 */
.page-about .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  padding-top: var(--space-4);
  font-size: .8125rem;
  color: var(--muted);
}

.page-about .breadcrumbs a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s, border-color .2s;
}

.page-about .breadcrumbs a:hover {
  color: var(--gold);
  border-color: var(--gold);
}

.page-about .breadcrumbs__sep {
  color: var(--violet);
}

/* 首屏英雄区 */
.page-about .about-hero {
  padding: var(--space-3) 0 0;
  position: relative;
}

.page-about .about-hero::after {
  content: "";
  display: block;
  width: 100%;
  height: 4px;
  margin-top: var(--space-5);
  background: linear-gradient(90deg,
    var(--red) 0 20%,
    var(--gold) 20% 40%,
    var(--blue) 40% 60%,
    var(--green) 60% 80%,
    var(--snow) 80% 100%);
  opacity: .8;
}

.page-about .about-hero__grid {
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.page-about .about-kicker {
  margin: 0 0 var(--space-2);
  font-family: var(--mono);
  font-size: .75rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--blue);
}

.page-about .about-hero h1 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 1.1;
  letter-spacing: .01em;
  text-shadow: 0 1px 0 var(--deep), 0 2px 0 var(--night), 0 8px 32px rgba(0, 0, 0, .55);
}

.page-about .about-hero__accent {
  display: block;
  margin-top: var(--space-1);
  color: var(--gold);
  font-size: clamp(1.6rem, 3.6vw, 2.8rem);
  font-weight: 800;
}

.page-about .about-hero__intro p {
  margin: 0 0 var(--space-2);
  max-width: 56ch;
  font-size: 1rem;
  line-height: 1.75;
  color: rgba(245, 247, 250, .82);
}

.page-about .about-hero__intro strong {
  color: var(--gold);
}

.page-about .about-hero__meta {
  margin-top: var(--space-2);
  padding: var(--space-2);
  background: rgba(217, 59, 77, .12);
  border-left: 3px solid var(--red);
  font-family: var(--mono);
  font-size: .8125rem;
  color: rgba(245, 247, 250, .75);
}

.page-about .about-hero__figure {
  margin: 0;
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  clip-path: polygon(0 0, calc(100% - 36px) 0, 100% 36px, 100% 100%, 0 100%);
  box-shadow: var(--shadow-card);
}

.page-about .about-hero__figure figcaption {
  margin-top: var(--space-1);
  font-family: var(--mono);
  font-size: .75rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}

/* 品牌故事 */
.page-about .about-story {
  padding: var(--space-5) 0;
}

.page-about .about-story__grid {
  display: grid;
  gap: var(--space-4);
}

.page-about .about-story__aside {
  border-left: 3px solid var(--gold);
  padding-left: var(--space-2);
}

.page-about .about-story__aside .section-note {
  margin-bottom: var(--space-1);
}

.page-about h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(1.75rem, 3vw, 2.6rem);
  line-height: 1.15;
  text-shadow: 0 1px 0 rgba(26, 42, 108, .7);
}

.page-about .about-story__content p {
  margin: 0 0 1em;
  max-width: 68ch;
  font-size: .9375rem;
  line-height: 1.8;
  color: rgba(245, 247, 250, .8);
}

.page-about .about-story__content strong {
  color: var(--gold);
}

.page-about .about-story__content p:last-child {
  margin-bottom: 0;
}

/* 发展历程 */
.page-about .about-journey {
  position: relative;
  padding: var(--space-5) 0;
  overflow: hidden;
}

.page-about .about-journey::before {
  content: "";
  position: absolute;
  top: 60px;
  right: -220px;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(74, 59, 143, .35), transparent 66%);
  pointer-events: none;
}

.page-about .about-journey>.container {
  position: relative;
  z-index: 1;
}

.page-about .about-journey__head {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-2);
}

.page-about .about-journey__headtext .section-note {
  margin-bottom: var(--space-1);
}

.page-about .about-journey__stamp {
  flex: 0 0 auto;
  margin: 0;
  padding: 8px 10px;
  background: rgba(242, 193, 78, .05);
  border: 2px dashed var(--gold);
  transform: rotate(-3deg);
  text-align: center;
  transition: transform .3s var(--ease);
}

.page-about .about-journey__stamp:hover {
  transform: rotate(0) scale(1.04);
}

.page-about .about-journey__stamp img {
  display: block;
  width: 80px;
  height: 80px;
  max-width: 100%;
  margin: 0 auto;
  object-fit: cover;
}

.page-about .about-journey__stamp figcaption {
  margin-top: 4px;
  font-family: var(--mono);
  font-size: .625rem;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-about .timeline {
  position: relative;
  margin-top: var(--space-4);
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 118px;
  width: 2px;
  background: repeating-linear-gradient(to bottom, var(--violet) 0 6px, transparent 6px 14px);
  opacity: .55;
  pointer-events: none;
}

.page-about .timeline__item {
  position: relative;
}

.page-about .timeline__summary {
  position: relative;
  display: grid;
  grid-template-columns: 88px 28px 1fr;
  column-gap: var(--space-2);
  align-items: start;
  padding: var(--space-1) 0;
  padding-right: 20px;
  cursor: pointer;
  list-style: none;
}

.page-about .timeline__summary::-webkit-details-marker {
  display: none;
}

.page-about .timeline__summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 4px;
  border-radius: 2px;
}

.page-about .timeline__summary::after {
  content: "▾";
  position: absolute;
  right: 0;
  top: 12px;
  font-size: .7rem;
  color: var(--muted);
}

.page-about .timeline__item:not([open]) .timeline__summary::after {
  content: "▸";
}

.page-about .timeline__year {
  padding-top: 2px;
  font-family: var(--mono);
  font-size: .875rem;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-about .timeline__dot {
  width: 14px;
  height: 14px;
  margin-top: 2px;
  border-radius: 50%;
  background: var(--dot-color);
  box-shadow: 0 0 0 3px var(--night), 0 0 14px var(--dot-color);
  justify-self: center;
  transition: transform .3s var(--ease);
}

.page-about .timeline__item:hover .timeline__dot {
  transform: scale(1.3);
}

.page-about .timeline__dot--red {
  --dot-color: var(--red);
}

.page-about .timeline__dot--gold {
  --dot-color: var(--gold);
}

.page-about .timeline__dot--blue {
  --dot-color: var(--blue);
}

.page-about .timeline__dot--green {
  --dot-color: var(--green);
}

.page-about .timeline__dot--snow {
  --dot-color: var(--snow);
}

.page-about .timeline__title {
  padding-top: 0;
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
}

.page-about .timeline__body {
  margin-top: 2px;
  padding: var(--space-2);
  background: rgba(26, 42, 108, .32);
  border-left: 3px solid var(--gold);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  font-size: .875rem;
  line-height: 1.7;
  color: rgba(245, 247, 250, .78);
}

.page-about .timeline__body p {
  margin: 0;
}

.page-about .about-journey__note {
  margin-top: var(--space-3);
  padding: var(--space-2) var(--space-3);
  background: rgba(242, 193, 78, .08);
  border: 1px dashed rgba(242, 193, 78, .4);
  font-family: var(--mono);
  font-size: .8125rem;
  color: rgba(245, 247, 250, .74);
}

/* 团队与文化 */
.page-about .about-team {
  padding: var(--space-5) 0 var(--space-6);
  background: linear-gradient(180deg, var(--mist) 0%, #d7dfee 100%);
  color: var(--night);
}

.page-about .about-team .section-note {
  color: var(--red);
}

.page-about .about-team h2 {
  color: var(--night);
  text-shadow: none;
}

.page-about .about-team__figure {
  margin: var(--space-4) 0;
  padding: 8px;
  background: var(--night);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
}

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

.page-about .team-group {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.page-about .team-group__head {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-2);
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-2);
  padding-bottom: var(--space-1);
  border-bottom: 2px solid var(--night);
}

.page-about .team-group__head h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.375rem;
  color: var(--night);
}

.page-about .team-group__head p {
  margin: 0;
  font-family: var(--mono);
  font-size: .75rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: rgba(11, 16, 38, .6);
}

.page-about .team-list {
  display: grid;
  gap: var(--space-2);
  grid-template-columns: 1fr;
}

.page-about .team-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: var(--space-3);
  background: var(--snow);
  border: 1px solid rgba(74, 59, 143, .22);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  box-shadow: 0 2px 0 rgba(11, 16, 38, .05);
  transition: transform .28s var(--ease), box-shadow .28s var(--ease), border-color .28s var(--ease);
}

.page-about .team-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 32px rgba(11, 16, 38, .16);
  border-color: var(--gold);
}

.page-about .team-card__shape {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  margin-bottom: var(--space-2);
  background: var(--shape-color, var(--gold));
  transition: transform .3s var(--ease);
}

.page-about .team-card:hover .team-card__shape {
  transform: rotate(9deg) scale(1.08);
}

.page-about .team-card__shape--diamond {
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-about .team-card__shape--circle {
  border-radius: 50%;
}

.page-about .team-card__shape--triangle {
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}

.page-about .team-card__shape--hexagon {
  clip-path: polygon(25% 5%, 75% 5%, 100% 50%, 75% 95%, 25% 95%, 0 50%);
}

.page-about .team-card__shape--shield {
  clip-path: polygon(0 0, 100% 0, 100% 22%, 75% 100%, 50% 86%, 25% 100%, 0 22%);
}

.page-about .team-card__shape--red {
  --shape-color: var(--red);
}

.page-about .team-card__shape--gold {
  --shape-color: var(--gold);
}

.page-about .team-card__shape--blue {
  --shape-color: var(--blue);
}

.page-about .team-card__shape--green {
  --shape-color: var(--green);
}

.page-about .team-card__shape--night {
  --shape-color: var(--night);
}

.page-about .team-card h4 {
  margin: 0 0 6px;
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1.3;
  color: var(--night);
}

.page-about .team-card p {
  margin: 0;
  font-size: .8125rem;
  line-height: 1.65;
  color: rgba(11, 16, 38, .72);
}

.page-about .team-card .tag {
  align-self: flex-start;
  margin-top: var(--space-2);
  transition: box-shadow .2s, transform .2s;
}

.page-about .team-card:hover .tag {
  transform: scale(1.04);
  box-shadow: 0 0 0 2px var(--gold);
}

/* 数据与合规 */
.page-about .about-compliance {
  padding: var(--space-5) 0 var(--space-6);
  background:
    radial-gradient(circle at 12% 92%, rgba(217, 59, 77, .16), transparent 30%),
    radial-gradient(circle at 90% 8%, rgba(59, 142, 208, .14), transparent 34%),
    var(--night);
}

.page-about .about-compliance .section-note {
  margin-bottom: var(--space-1);
  color: var(--gold);
}

.page-about .compliance-grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-3);
}

.page-about .compliance-list {
  display: grid;
  gap: var(--space-3);
}

.page-about .compliance-list__lead {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.page-about .compliance-shield {
  flex: 0 0 auto;
  color: var(--gold);
  filter: drop-shadow(0 0 10px rgba(242, 193, 78, .35));
}

.page-about .compliance-list__lead h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.4rem;
}

.page-about .compliance-list ul {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .compliance-list li {
  position: relative;
  padding: var(--space-2) var(--space-2) var(--space-2) 40px;
  background: rgba(11, 16, 38, .4);
  border-left: 3px solid var(--blue);
  font-size: .875rem;
  line-height: 1.7;
}

.page-about .compliance-list li::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 19px;
  width: 6px;
  height: 6px;
  background: var(--gold);
  transform: rotate(45deg);
}

.page-about .compliance-figure {
  margin: 0;
  padding: 10px;
  background: rgba(26, 42, 108, .22);
  border: 1px solid rgba(242, 193, 78, .45);
  transform: rotate(.6deg);
}

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

.page-about .compliance-figure figcaption {
  padding-top: var(--space-1);
  font-family: var(--mono);
  font-size: .75rem;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-about .compliance-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.page-about .compliance-stat {
  padding: var(--space-2) var(--space-1);
  background: rgba(245, 247, 250, .04);
  border: 1px solid rgba(139, 148, 186, .2);
  text-align: center;
}

.page-about .compliance-stat__num {
  display: block;
  font-family: var(--mono);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--gold);
}

.page-about .compliance-stat__label {
  display: block;
  margin-top: 6px;
  font-size: .75rem;
  letter-spacing: .06em;
  color: var(--muted);
}

/* 结尾引导 */
.page-about .about-cta {
  padding: var(--space-5) 0;
  border-top: 1px solid rgba(139, 148, 186, .2);
}

.page-about .about-cta::before {
  content: "";
  display: block;
  height: 4px;
  background: linear-gradient(90deg,
    var(--red) 0 20%,
    var(--gold) 20% 40%,
    var(--blue) 40% 60%,
    var(--green) 60% 80%,
    var(--snow) 80% 100%);
  opacity: .75;
}

.page-about .about-cta__inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.page-about .about-cta__link {
  margin-top: var(--space-3);
  font-size: .875rem;
}

.page-about .about-cta__link a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px dashed var(--gold);
}

/* 响应式 */
@media (min-width: 640px) {
  .page-about .team-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about .compliance-stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.15fr .85fr;
    column-gap: var(--space-5);
    align-items: end;
    margin-bottom: var(--space-5);
  }

  .page-about .about-story__grid {
    grid-template-columns: 320px 1fr;
    gap: var(--space-5);
  }

  .page-about .timeline {
    margin-top: var(--space-5);
  }

  .page-about .timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .timeline__summary {
    grid-template-columns: 1fr 40px 1fr;
  }

  .page-about .timeline__year {
    text-align: right;
    font-size: 1rem;
  }

  .page-about .timeline__title {
    font-size: 1.125rem;
  }

  .page-about .timeline__body {
    width: calc(50% - 24px);
    margin-left: calc(50% + 24px);
  }

  .page-about .timeline__item:nth-child(even) .timeline__year {
    grid-column: 3;
    grid-row: 1;
    text-align: left;
  }

  .page-about .timeline__item:nth-child(even) .timeline__dot {
    grid-column: 2;
    grid-row: 1;
  }

  .page-about .timeline__item:nth-child(even) .timeline__title {
    grid-column: 1;
    grid-row: 1;
    text-align: right;
  }

  .page-about .timeline__item:nth-child(even) .timeline__body {
    width: calc(50% - 24px);
    margin-left: 0;
    text-align: right;
    border-left: none;
    border-right: 3px solid var(--gold);
    clip-path: polygon(0 14px, 14px 0, 100% 0, 100% 100%, 0 100%);
  }

  .page-about .compliance-grid {
    grid-template-columns: 1.2fr .8fr;
    gap: var(--space-5);
    align-items: center;
    margin-top: var(--space-4);
  }
}

@media (min-width: 1100px) {
  .page-about .team-list--core {
    grid-template-columns: repeat(5, 1fr);
  }

  .page-about .team-list--tech {
    grid-template-columns: repeat(4, 1fr);
  }
}