.page-about {
  --about-rail: 168px;
  --about-marker: 30px;
  --about-amber-deep: #8A6118;
  padding-bottom: clamp(48px, 7vw, 88px);
}

.page-about .breadcrumb {
  margin: 20px 0 22px;
}

/* ---------- 首屏 ---------- */
.page-about .hero-about {
  display: grid;
  gap: 26px;
  align-items: center;
  margin-bottom: clamp(44px, 7vw, 82px);
}

.page-about .hero-about__copy {
  position: relative;
  padding: clamp(22px, 3.4vw, 38px);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background:
    linear-gradient(140deg, rgba(56, 214, 214, 0.16), transparent 48%),
    linear-gradient(320deg, rgba(232, 163, 61, 0.18), transparent 54%),
    var(--panel);
  box-shadow: var(--shadow);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 46px), calc(100% - 46px) 100%, 0 100%);
}

.page-about .hero-about__copy h1 {
  margin: 10px 0 16px;
  font-size: clamp(27px, 4.4vw, 46px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-about .hero-about__copy .lede {
  margin: 0;
  max-width: 56ch;
}

.page-about .hero-about__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.page-about .fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(11, 27, 43, 0.58);
}

.page-about .fact__num {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--amber);
}

.page-about .fact:nth-child(even) .fact__num {
  color: var(--cyan);
}

.page-about .fact__label {
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--stone);
}

.page-about .hero-about__figure {
  margin: 0;
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  overflow: hidden;
}

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

/* ---------- 区块通用 ---------- */
.page-about .section {
  margin-top: clamp(52px, 8vw, 96px);
}

.page-about .section__title {
  color: var(--cream);
}

/* ---------- 时间线 ---------- */
.page-about .tl {
  display: grid;
  gap: 26px;
  margin-top: 30px;
}

.page-about .tl__rail-title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--violet);
}

.page-about .tl__years {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
}

.page-about .tl__year {
  display: inline-block;
  padding: 8px 15px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(16, 42, 67, 0.62);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cream);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-about .tl__year:hover,
.page-about .tl__year:focus-visible {
  color: var(--ink-950);
  background: var(--amber);
  border-color: var(--amber);
}

.page-about .tl__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .tl__node {
  display: grid;
  grid-template-columns: var(--about-marker) minmax(0, 1fr);
  gap: 14px;
  scroll-margin-top: calc(var(--header-h) + 26px);
}

.page-about .tl__mark {
  position: relative;
  display: block;
}

.page-about .tl__mark::before {
  content: "";
  position: absolute;
  top: 22px;
  left: 50%;
  width: 13px;
  height: 13px;
  margin-left: -6.5px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(56, 214, 214, 0.16);
}

.page-about .tl__mark::after {
  content: "";
  position: absolute;
  top: 36px;
  bottom: -20px;
  left: 50%;
  width: 2px;
  margin-left: -1px;
  background: linear-gradient(180deg, var(--line-strong), rgba(110, 106, 138, 0.05));
}

.page-about .tl__node:last-child .tl__mark::after {
  display: none;
}

.page-about .tl__node--fit .tl__mark::before {
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(232, 163, 61, 0.18);
}

.page-about .tl__card {
  padding: 20px 22px 22px;
  border: 1px solid rgba(43, 33, 25, 0.14);
  border-radius: var(--radius);
  background: var(--cream);
  color: var(--brown);
  box-shadow: 0 14px 32px rgba(3, 10, 18, 0.32);
}

.page-about .tl__stamp {
  display: inline-block;
  margin: 0 0 9px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--flame);
}

.page-about .tl__node--fit .tl__stamp {
  color: var(--about-amber-deep);
}

.page-about .tl__card h3 {
  margin: 0 0 8px;
  font-size: 19px;
  line-height: 1.4;
  color: var(--brown);
}

.page-about .tl__card p {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(43, 33, 25, 0.86);
}

/* ---------- 团队 ---------- */
.page-about .team__grid {
  margin-top: 28px;
  gap: 16px;
}

.page-about .team__card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(16, 42, 67, 0.62);
}

.page-about .team__card--accent {
  background:
    linear-gradient(160deg, rgba(232, 163, 61, 0.16), transparent 60%),
    rgba(16, 42, 67, 0.7);
}

.page-about .team__card h3 {
  margin: 10px 0 10px;
  font-size: 19px;
  line-height: 1.4;
  color: var(--cream);
}

.page-about .team__card p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--stone);
}

.page-about .team__card p.team__big {
  margin: 0 0 8px;
  font-size: clamp(30px, 5vw, 38px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: 0.04em;
  color: var(--amber);
}

.page-about .team__figure-cell {
  margin-top: 4px;
}

.page-about .team__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

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

/* ---------- 三端适配 ---------- */
.page-about .dev {
  margin-top: 28px;
  display: grid;
  gap: 18px;
}

.page-about .dev__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .dev__panel {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(16, 42, 67, 0.6);
}

.page-about .dev__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .dev__item {
  display: grid;
  gap: 6px;
  padding-left: 14px;
  border-left: 2px solid var(--line-strong);
}

.page-about .dev__item p {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--stone);
}

.page-about .dev__key {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
}

/* ---------- 广东运营中心 ---------- */
.page-about .center-work {
  position: relative;
  margin-top: clamp(52px, 8vw, 96px);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  overflow: hidden;
}

.page-about .center-work__bg {
  position: absolute;
  inset: 0;
}

.page-about .center-work__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.32;
}

.page-about .center-work::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(125deg, rgba(11, 27, 43, 0.95) 28%, rgba(11, 27, 43, 0.7) 100%);
  pointer-events: none;
}

.page-about .center-work__inner {
  position: relative;
  z-index: 1;
  padding: clamp(24px, 4vw, 46px);
}

.page-about .center-work__inner .section__head {
  margin-bottom: 24px;
}

.page-about .center-work__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .center-work__item {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius);
  background: rgba(11, 27, 43, 0.72);
}

.page-about .center-work__item:nth-child(2) {
  border-left-color: var(--cyan);
}

.page-about .center-work__item:nth-child(3) {
  border-left-color: var(--flame);
}

.page-about .center-work__idx {
  display: inline-block;
  margin-bottom: 6px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--violet);
}

.page-about .center-work__item h3 {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--cream);
}

.page-about .center-work__item p {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--stone);
}

/* ---------- 合作与能力 ---------- */
.page-about .eco {
  margin-top: 28px;
  display: grid;
  gap: 16px;
}

.page-about .eco__col {
  padding: 24px;
}

.page-about .eco__col h3 {
  margin: 0 0 12px;
  font-size: 18px;
  color: var(--cream);
}

.page-about .eco__col p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--stone);
}

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

.page-about .eco__list li {
  padding-left: 14px;
  border-left: 2px solid rgba(56, 214, 214, 0.5);
  font-size: 16px;
  line-height: 1.78;
  color: var(--stone);
}

.page-about .eco__tag {
  margin-right: 8px;
  color: var(--amber);
  letter-spacing: 0.08em;
}

.page-about .eco__foot {
  margin-top: 22px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(11, 27, 43, 0.6);
}

.page-about .eco__qualify {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--stone);
}

.page-about .eco__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .eco__more {
  margin: 16px 0 0;
  font-size: 15px;
  color: var(--stone);
}

.page-about .eco__textlink {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 214, 214, 0.5);
}

.page-about .eco__textlink:hover,
.page-about .eco__textlink:focus-visible {
  color: var(--amber-soft);
  border-bottom-color: var(--amber-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .hero-about__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .center-work__item:nth-child(3) {
    grid-column: 1 / -1;
  }
}

@media (min-width: 860px) {
  .page-about .eco {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .tl {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 42px;
    align-items: start;
  }

  .page-about .tl__rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-about .tl__years {
    flex-direction: column;
    gap: 10px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .tl__year {
    display: block;
    border-radius: var(--radius-s);
    padding: 10px 14px;
  }

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

  .page-about .center-work__item:nth-child(3) {
    grid-column: auto;
  }
}

@media (min-width: 980px) {
  .page-about .hero-about {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    gap: 36px;
  }

  .page-about .hero-about__copy {
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 64px), calc(100% - 64px) 100%, 0 100%);
  }
}

@media (min-width: 1100px) {
  .page-about .tl__node:nth-child(even) {
    margin-left: 46px;
  }
}
<<<END>>>