.page-about {
  --about-hair: rgba(11, 27, 58, .14);
  --about-hair-soft: rgba(11, 27, 58, .08);
  --about-on-dark: rgba(245, 242, 233, .74);
  --about-on-dark-strong: rgba(245, 242, 233, .93);
  background: var(--paper);
}

.page-about .section {
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}

.page-about .section-head {
  display: grid;
  gap: .65rem;
}

.page-about .section-head h2 {
  margin: 0;
  font-weight: 250;
  font-size: clamp(1.6rem, 4.2vw, 2.6rem);
  line-height: 1.14;
  letter-spacing: .01em;
  color: var(--ink);
}

.page-about .section-intro {
  margin: 0;
  max-width: 44rem;
  line-height: 1.8;
  color: var(--body-soft);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2.25rem, 6vw, 4.25rem) 0 clamp(2.75rem, 7vw, 5rem);
  background:
    radial-gradient(115% 95% at 8% -5%, #1b3a75 0%, rgba(19, 43, 88, 0) 56%),
    linear-gradient(168deg, var(--night) 0%, var(--deep) 44%, var(--ink) 100%);
  color: var(--paper);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: -12%;
  right: -12%;
  bottom: -58%;
  height: 72%;
  background:
    repeating-linear-gradient(90deg, rgba(200, 255, 77, .08) 0 1px, transparent 1px 92px),
    repeating-linear-gradient(0deg, rgba(245, 242, 233, .05) 0 1px, transparent 1px 92px);
  transform: rotate(-6deg);
  pointer-events: none;
}

.page-about .about-hero .shell {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__inner {
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.5rem);
}

.page-about .about-hero .breadcrumb a,
.page-about .about-hero .breadcrumb__item {
  color: var(--about-on-dark);
}

.page-about .about-hero .breadcrumb a {
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

.page-about .about-hero .breadcrumb a:hover,
.page-about .about-hero .breadcrumb a:focus-visible {
  color: var(--lime);
}

.page-about .about-hero .eyebrow {
  margin: 1.25rem 0 0;
}

.page-about .about-hero h1.display {
  margin: .75rem 0 0;
  font-weight: 250;
  font-size: clamp(2.15rem, 6.4vw, 4.1rem);
  line-height: 1.04;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-about .about-hero__lede {
  margin: 1.25rem 0 0;
  max-width: 34rem;
  color: var(--about-on-dark-strong);
}

.page-about .about-hero__index {
  align-self: end;
}

.page-about .hero-index {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(245, 242, 233, .2);
}

.page-about .hero-index__link {
  display: flex;
  align-items: baseline;
  gap: .9rem;
  padding: .7rem .1rem;
  border-bottom: 1px solid rgba(245, 242, 233, .14);
  color: var(--about-on-dark);
  text-decoration: none;
  font-size: .95rem;
  transition: color var(--t-fast) var(--ease), padding-left var(--t-base) var(--ease);
}

.page-about .hero-index__link:hover,
.page-about .hero-index__link:focus-visible {
  color: var(--lime);
  padding-left: .6rem;
}

.page-about .hero-index__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--lime);
}

/* ---------- 专注方向 ---------- */

.page-about .focus-grid {
  display: grid;
  gap: 1.5rem;
}

.page-about .focus-copy p {
  margin: 0 0 1.05rem;
  max-width: 38rem;
  line-height: 1.8;
  color: var(--body-soft);
}

.page-about .focus-link {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  margin-top: .35rem;
  padding-bottom: 3px;
  border-bottom: 2px solid var(--lime);
  color: var(--deep);
  font-weight: 600;
  text-decoration: none;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), gap var(--t-base) var(--ease);
}

.page-about .focus-link:hover,
.page-about .focus-link:focus-visible {
  color: var(--orange);
  border-color: var(--orange);
  gap: .85rem;
}

/* ---------- 覆盖范围 ---------- */

.page-about .coverage-grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .coverage-text {
  margin: 0 0 1rem;
  max-width: 38rem;
  line-height: 1.8;
  color: var(--body-soft);
}

.page-about .figure-strip {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  padding: 0;
  display: grid;
  gap: .7rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-about .figure-card {
  display: grid;
  gap: .4rem;
  padding: 1rem 1.1rem 1.15rem;
  border-radius: var(--r-lg);
  background: var(--deep);
  color: var(--paper);
}

.page-about .figure-card--lime {
  background: var(--lime);
  color: var(--deep);
}

.page-about .figure-card__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 5.4vw, 2.1rem);
  line-height: 1;
  letter-spacing: -.01em;
}

.page-about .figure-card__plus {
  font-size: .5em;
  margin-left: .2em;
  font-weight: 600;
}

.page-about .figure-card__label {
  font-size: .78rem;
  letter-spacing: .06em;
  opacity: .8;
}

.page-about .media-frame {
  margin: 0;
}

.page-about .coverage-media img,
.page-about .timeline-map img,
.page-about .service-sky img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  object-fit: cover;
}

.page-about .timeline-map {
  margin: 0 0 clamp(1.75rem, 4vw, 2.75rem);
}

/* ---------- 更新机制 ---------- */

.page-about .update-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(1.6rem, 4.5vw, 3.25rem);
  border-radius: var(--r-xl);
  background:
    radial-gradient(85% 70% at 92% 0%, rgba(123, 97, 255, .3) 0%, rgba(123, 97, 255, 0) 62%),
    linear-gradient(150deg, var(--deep) 0%, #10254f 58%, var(--ink) 100%);
  color: var(--paper);
}

.page-about .update-panel h2 {
  margin: .55rem 0 0;
  font-weight: 250;
  font-size: clamp(1.55rem, 4.2vw, 2.4rem);
  line-height: 1.14;
  color: var(--paper);
}

.page-about .update-lede {
  margin: .95rem 0 0;
  max-width: 40rem;
  line-height: 1.8;
  color: var(--about-on-dark);
}

.page-about .update-stats {
  list-style: none;
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  display: grid;
  gap: .85rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-about .update-stat {
  display: grid;
  gap: .35rem;
  padding: .9rem 1rem 1rem;
  border: 1px solid rgba(245, 242, 233, .15);
  border-radius: var(--r-md);
  background: rgba(245, 242, 233, .05);
  transition: border-color var(--t-base) var(--ease), transform var(--t-base) var(--ease);
}

.page-about .update-stat:hover {
  border-color: rgba(200, 255, 77, .55);
  transform: translateY(-3px);
}

.page-about .update-stat__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.25rem, 4.2vw, 1.85rem);
  line-height: 1.05;
  color: var(--lime);
}

.page-about .update-stat__num small {
  font-size: .5em;
  margin-left: .22em;
  font-weight: 600;
}

.page-about .update-stat__label {
  font-size: .8rem;
  letter-spacing: .05em;
  color: var(--about-on-dark);
}

.page-about .dim-list {
  list-style: none;
  margin: clamp(1.35rem, 3.5vw, 1.9rem) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .45rem .5rem;
}

.page-about .dim-list li {
  padding: .32rem .8rem;
  border: 1px solid rgba(245, 242, 233, .24);
  border-radius: var(--pill);
  font-size: .8rem;
  color: rgba(245, 242, 233, .86);
}

.page-about .dim-list li:nth-child(3n) {
  border-color: rgba(200, 255, 77, .48);
  color: var(--lime);
}

/* ---------- 版本轨迹 ---------- */

.page-about .timeline__list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 2.5rem;
}

.page-about .timeline__list::before {
  content: "";
  position: absolute;
  left: 9px;
  top: .7rem;
  bottom: .7rem;
  width: 2px;
  background: linear-gradient(180deg, var(--moss) 0%, var(--violet) 48%, var(--clay) 100%);
  opacity: .55;
}

.page-about .timeline__item {
  position: relative;
  padding-bottom: 1.9rem;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-2.5rem + 2px);
  top: .5rem;
  width: 12px;
  height: 12px;
  border: 2px solid var(--violet);
  border-radius: 50%;
  background: var(--paper);
  transition: background var(--t-base) var(--ease), border-color var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

.page-about .timeline__item--current::before {
  background: var(--lime);
  border-color: var(--lime);
  box-shadow: 0 0 0 5px rgba(200, 255, 77, .24);
}

.page-about .timeline__node {
  display: flex;
  flex-direction: column;
  gap: .2rem;
  margin-bottom: .6rem;
}

.page-about .timeline__year {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .12em;
  color: var(--moss);
}

.page-about .timeline__ver {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
  color: var(--deep);
}

.page-about .timeline__item--current .timeline__ver {
  color: var(--clay);
}

.page-about .timeline__card {
  padding: 1.1rem 1.25rem 1.3rem;
  border: 1px solid var(--about-hair);
  border-radius: var(--r-lg);
  background: var(--paper);
  transition: transform var(--t-base) var(--ease), border-color var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

.page-about .timeline__item:hover .timeline__card {
  transform: translateY(-4px);
  border-color: var(--violet);
  box-shadow: 0 20px 42px -30px rgba(11, 27, 58, .65);
}

.page-about .timeline__title {
  margin: 0 0 .45rem;
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

.page-about .timeline__text {
  margin: 0;
  font-size: .95rem;
  line-height: 1.78;
  color: var(--body-soft);
}

/* ---------- 团队 ---------- */

.page-about .team-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .8rem;
  grid-template-columns: repeat(auto-fit, minmax(155px, 1fr));
}

.page-about .team-stat {
  display: grid;
  gap: .35rem;
  padding: 1.05rem 1.1rem 1.2rem;
  border: 1px solid var(--about-hair);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, .55);
  transition: border-color var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

.page-about .team-stat:hover {
  border-color: var(--violet);
  box-shadow: 0 18px 36px -28px rgba(11, 27, 58, .7);
}

.page-about .team-stat__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.7rem, 5vw, 2.35rem);
  line-height: 1;
  color: var(--deep);
  transition: transform var(--t-base) var(--ease), color var(--t-base) var(--ease);
}

.page-about .team-stat:hover .team-stat__num {
  transform: translateY(-3px);
  color: var(--clay);
}

.page-about .team-stat__plus {
  font-size: .45em;
  margin-left: .18em;
  font-weight: 600;
}

.page-about .team-stat__label {
  font-size: .86rem;
  font-weight: 600;
  color: var(--ink);
}

.page-about .team-stat__note {
  font-size: .77rem;
  line-height: 1.6;
  color: var(--stone);
}

.page-about .team-notes {
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
  display: grid;
  gap: 1rem;
}

.page-about .team-notes p {
  margin: 0;
  max-width: 42rem;
  line-height: 1.8;
  color: var(--body-soft);
}

.page-about .honor-list {
  list-style: none;
  margin: clamp(1.35rem, 3.5vw, 1.9rem) 0 0;
  padding: 0;
  display: grid;
  gap: .6rem;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.page-about .honor-item {
  display: flex;
  align-items: center;
  gap: .8rem;
  padding: .75rem 1rem;
  border: 1px solid var(--about-hair);
  border-left: 3px solid var(--clay);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .6);
}

.page-about .honor-item__mark {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .88rem;
  color: var(--deep);
  white-space: nowrap;
}

.page-about .honor-item__text {
  font-size: .84rem;
  color: var(--body-soft);
}

/* ---------- 服务地区与联系 ---------- */

.page-about .section--closing {
  padding: clamp(1.5rem, 4vw, 2.5rem) 0 clamp(3rem, 7vw, 5rem);
  background: linear-gradient(180deg, var(--paper) 0%, #12224a 26%, var(--ink) 100%);
}

.page-about .service-sky {
  margin: 0 0 clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .service-panel {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.25rem);
  color: var(--paper);
}

.page-about .service-panel h2 {
  margin: .8rem 0 0;
  font-weight: 250;
  font-size: clamp(1.55rem, 4.2vw, 2.35rem);
  line-height: 1.14;
  color: var(--paper);
}

.page-about .service-intro {
  margin: .95rem 0 0;
  max-width: 36rem;
  line-height: 1.8;
  color: var(--about-on-dark);
}

.page-about .contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .55rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.page-about .contact-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem .7rem;
  padding: .85rem 1rem;
  border: 1px solid rgba(245, 242, 233, .16);
  border-radius: var(--r-md);
  background: rgba(245, 242, 233, .045);
  transition: border-color var(--t-base) var(--ease);
}

.page-about .contact-item:hover {
  border-color: rgba(200, 255, 77, .5);
}

.page-about .contact-item__key {
  width: 100%;
  font-size: .73rem;
  letter-spacing: .12em;
  color: var(--lime);
}

.page-about .contact-item__val {
  font-family: var(--font-mono);
  font-size: .93rem;
  color: var(--paper);
  word-break: break-all;
}

.page-about .copy-btn {
  padding: .28rem .75rem;
  border: 1px solid rgba(245, 242, 233, .3);
  border-radius: var(--pill);
  background: transparent;
  color: var(--about-on-dark);
  font: inherit;
  font-size: .73rem;
  cursor: pointer;
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-about .copy-btn:hover,
.page-about .copy-btn:focus-visible {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--deep);
}

.page-about .service-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

/* ---------- 响应式 ---------- */

@media (min-width: 860px) {
  .page-about .timeline__list {
    padding-left: 0;
  }

  .page-about .timeline__list::before {
    left: 148px;
  }

  .page-about .timeline__item {
    display: grid;
    grid-template-columns: 148px minmax(0, 1fr);
    column-gap: 2.75rem;
    padding-bottom: 2.4rem;
  }

  .page-about .timeline__item::before {
    left: 141px;
    top: .85rem;
  }

  .page-about .timeline__node {
    align-items: flex-end;
    padding-right: 1.5rem;
    margin-bottom: 0;
    text-align: right;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.3fr) minmax(240px, .7fr);
    align-items: end;
    column-gap: clamp(2rem, 5vw, 4rem);
  }

  .page-about .focus-grid {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
    column-gap: clamp(2rem, 5vw, 4.5rem);
  }

  .page-about .coverage-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: center;
    column-gap: clamp(2rem, 5vw, 3.5rem);
  }

  .page-about .update-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .team-notes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
  }
}
<<<END>>>