.page-about {
  --ab-line: rgba(42, 54, 68, .9);
  --ab-cyan-soft: rgba(25, 230, 208, .08);
  --sec-accent: var(--cyan);
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  padding-top: 1rem;
  padding-bottom: 1rem;
}

/* ---------- 首屏框景 ---------- */
.page-about .about-hero {
  position: relative;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background-color: var(--ink);
  background-image:
    repeating-linear-gradient(90deg, var(--ab-line) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(42, 54, 68, .5) 0 1px, transparent 1px 72px),
    radial-gradient(120% 90% at 10% 0%, rgba(25, 230, 208, .13), transparent 62%),
    radial-gradient(90% 80% at 100% 100%, rgba(111, 91, 255, .12), transparent 58%);
  padding: clamp(2rem, 6vw, 4.4rem) 0 clamp(2rem, 5vw, 3.4rem);
  overflow: hidden;
}

.page-about .about-hero__shell {
  display: grid;
  gap: clamp(1.8rem, 4vw, 3rem);
  align-items: end;
}

.page-about .about-hero h1 {
  margin: .7rem 0 0;
  font-size: clamp(1.85rem, 5.2vw, 3.2rem);
  line-height: 1.18;
  letter-spacing: -.02em;
  font-weight: 900;
  color: var(--white);
}

.page-about .about-hero .lede {
  margin: 1.1rem 0 0;
  max-width: 48ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--silver);
}

@media (min-width: 901px) {
  .page-about .about-hero__shell {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

/* ---------- 首屏数据块 ---------- */
.page-about .about-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-hard);
}

.page-about .about-stats__item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .4rem;
  padding: 1rem 1.05rem 1.15rem;
  background: var(--ink-2);
}

.page-about .about-stats__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 100%;
  background: var(--cyan);
  opacity: 0;
  transition: opacity .18s ease;
}

.page-about .about-stats__item:hover::before {
  opacity: 1;
}

.page-about .about-stats__v {
  font-size: clamp(1.35rem, 3.4vw, 1.85rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--cyan);
}

.page-about .about-stats__k {
  font-size: .82rem;
  line-height: 1.5;
  color: var(--silver);
}

/* ---------- 通用区块 ---------- */
.page-about .about-sec {
  position: relative;
  padding: clamp(2.8rem, 7vw, 4.8rem) 0;
  border-top: 1px solid var(--line);
}

.page-about .about-sec--violet {
  --sec-accent: var(--violet);
  background-image: linear-gradient(180deg, rgba(111, 91, 255, .07), transparent 42%);
}

.page-about .about-sec--orange {
  --sec-accent: var(--orange);
  background-image: linear-gradient(180deg, rgba(255, 122, 47, .07), transparent 42%);
}

.page-about .about-sec--amber {
  --sec-accent: var(--amber);
  background-image: linear-gradient(180deg, rgba(255, 194, 75, .06), transparent 42%);
}

.page-about .about-sec .kicker {
  color: var(--sec-accent);
}

.page-about .about-sec .kicker::before {
  background: var(--sec-accent);
}

.page-about .about-head {
  max-width: 62ch;
  margin-bottom: clamp(1.6rem, 3.5vw, 2.6rem);
}

.page-about .about-head .section-title {
  margin: .55rem 0 .85rem;
}

.page-about .about-note {
  margin: 1.1rem 0 0;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 时间线 ---------- */
.page-about .tl {
  list-style: none;
  margin: 0 0 clamp(2rem, 4vw, 3rem);
  padding: 0;
}

.page-about .tl__item {
  position: relative;
  margin-left: 1.15rem;
  padding: 0 0 2.1rem 2.4rem;
  border-left: 1px solid var(--line);
}

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

.page-about .tl__num {
  position: absolute;
  left: -1.15rem;
  top: 0;
  display: grid;
  place-items: center;
  width: 2.3rem;
  height: 2.3rem;
  background: var(--ink);
  border: 1px solid var(--line);
  color: var(--silver);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .04em;
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}

.page-about .tl__item:hover .tl__num {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-about .tl__stage {
  margin: 0 0 .4rem;
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-about .tl__title {
  margin: 0 0 .55rem;
  font-size: clamp(1.05rem, 2.2vw, 1.28rem);
  letter-spacing: -.01em;
  color: var(--white);
}

.page-about .tl__text {
  margin: 0;
  max-width: 68ch;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-about .tl__more {
  margin: .55rem 0 0;
  max-width: 68ch;
  font-size: .86rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 图片框 ---------- */
.page-about .about-shot {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-2);
}

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

.page-about .about-shot__cap {
  display: block;
  padding: .7rem 1rem;
  border-top: 1px solid var(--line);
  font-size: .76rem;
  letter-spacing: .04em;
  color: var(--muted);
}

.page-about .about-shot--wide {
  margin-bottom: clamp(1.4rem, 3vw, 2rem);
}

/* ---------- 标签页 ---------- */
.page-about .tabs {
  margin-top: clamp(1.4rem, 3vw, 2rem);
}

.page-about .tabs__tab[aria-selected="true"] {
  background: var(--sec-accent, var(--cyan));
  border-color: var(--sec-accent, var(--cyan));
  color: var(--ink);
}

.page-about .about-versions .tabs__tab {
  min-width: 5rem;
  font-size: .95rem;
  letter-spacing: .08em;
}

.page-about .tabs__panel {
  padding: clamp(1.15rem, 2.6vw, 1.9rem);
  background: var(--ink-2);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-hard);
}

.page-about .about-conclusion {
  margin: 0 0 1.1rem;
  padding-left: .9rem;
  border-left: 3px solid var(--sec-accent, var(--cyan));
  font-size: clamp(1rem, 2.2vw, 1.12rem);
  font-weight: 700;
  line-height: 1.65;
  color: var(--white);
}

/* ---------- 事实清单 ---------- */
.page-about .about-facts {
  margin: 0;
  border: 1px solid var(--line);
}

.page-about .about-facts__row {
  display: grid;
  gap: .35rem;
  padding: .85rem 1rem;
  border-bottom: 1px solid var(--line);
  background: var(--ink);
}

.page-about .about-facts__row:nth-child(even) {
  background: var(--ink-2);
}

.page-about .about-facts__row:last-child {
  border-bottom: 0;
}

.page-about .about-facts dt {
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-about .about-facts dd {
  margin: 0;
  font-size: .94rem;
  line-height: 1.75;
  color: var(--silver);
  overflow-wrap: anywhere;
}

.page-about .about-facts--lg .about-facts__row {
  background: var(--ink-2);
}

.page-about .about-facts--lg .about-facts__row:nth-child(even) {
  background: var(--ink);
}

@media (min-width: 700px) {
  .page-about .about-facts__row {
    grid-template-columns: 8.5rem minmax(0, 1fr);
    gap: 1rem;
    align-items: baseline;
  }
}

/* ---------- 团队 ---------- */
.page-about .about-team__top {
  margin-bottom: clamp(1.6rem, 3.5vw, 2.4rem);
  align-items: end;
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(1rem, 2.6vw, 1.8rem);
}

@media (min-width: 820px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

.page-about .about-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .65rem;
}

.page-about .about-list li {
  position: relative;
  padding-left: 1.4rem;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .about-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .58em;
  width: .55rem;
  height: .55rem;
  border: 1px solid var(--sec-accent, var(--cyan));
  background: var(--ab-cyan-soft);
}

.page-about .about-team__side {
  padding: 1.1rem 1.2rem 1.3rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--sec-accent, var(--cyan));
  background: var(--ink);
}

.page-about .about-team__label {
  margin: 0 0 .45rem;
  font-size: .73rem;
  letter-spacing: .12em;
  color: var(--muted);
}

.page-about .about-team__num {
  display: block;
  margin: 0;
  font-size: clamp(1.7rem, 5vw, 2.4rem);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-team__unit {
  margin: .55rem 0 0;
  font-size: .85rem;
  color: var(--silver);
}

/* ---------- 服务地区 ---------- */
.page-about .about-region__grid {
  align-items: start;
}

/* ---------- 协作与关注 ---------- */
.page-about .about-honors {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1rem, 2.6vw, 1.5rem);
}

@media (min-width: 760px) {
  .page-about .about-honors {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-honor {
  padding: 1.3rem 1.3rem 1.5rem;
  border-left: 3px solid var(--sec-accent, var(--cyan));
}

.page-about .about-honor__num {
  margin: 0 0 .7rem;
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--sec-accent, var(--cyan));
}

.page-about .about-honor__title {
  margin: 0 0 .5rem;
  font-size: 1rem;
  color: var(--white);
}

.page-about .about-honor__text {
  margin: 0;
  font-size: .89rem;
  line-height: 1.8;
  color: var(--silver);
}

/* ---------- 结尾引导 ---------- */
.page-about .about-next__box {
  padding: clamp(1.5rem, 4vw, 2.6rem);
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(25, 230, 208, .12), rgba(111, 91, 255, .12) 58%, rgba(10, 14, 18, 0) 100%),
    var(--ink-2);
  box-shadow: var(--shadow-hard);
}

.page-about .about-next__title {
  margin: 0 0 .55rem;
  font-size: clamp(1.25rem, 3.4vw, 1.85rem);
  letter-spacing: -.02em;
  color: var(--white);
}

.page-about .about-next__text {
  margin: 0 0 1.5rem;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--silver);
}

.page-about .about-next__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .6rem;
}

@media (min-width: 760px) {
  .page-about .about-next__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .about-next__links a {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr);
  gap: .15rem .9rem;
  align-items: center;
  padding: .9rem 1rem;
  border: 1px solid var(--line);
  background: var(--ink);
  color: var(--silver);
  text-decoration: none;
  transition: border-color .18s ease, color .18s ease, transform .18s ease;
}

.page-about .about-next__links a:hover,
.page-about .about-next__links a:focus-visible {
  border-color: var(--cyan);
  color: var(--white);
  transform: translateX(3px);
}

.page-about .about-next__num {
  grid-row: 1 / span 2;
  font-size: .8rem;
  color: var(--cyan);
}

.page-about .about-next__label {
  font-size: .98rem;
  font-weight: 700;
  color: var(--white);
}

.page-about .about-next__desc {
  font-size: .84rem;
  line-height: 1.6;
  color: var(--silver);
}

@media (max-width: 520px) {
  .page-about .about-stats {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-about .about-next__links a {
    grid-template-columns: 1.8rem minmax(0, 1fr);
  }

  .page-about .about-honor {
    padding: 1.1rem 1.05rem 1.25rem;
  }
}
<<<END>>>