.page-about {
  --about-rim: rgba(45, 86, 127, 0.55);
  --about-rim-soft: rgba(45, 86, 127, 0.28);
  --about-gold-line: rgba(216, 168, 78, 0.45);
  --about-gold-soft: rgba(216, 168, 78, 0.16);
  background:
    radial-gradient(120% 62% at 86% -8%, rgba(45, 86, 127, 0.35) 0%, rgba(10, 26, 47, 0) 62%),
    var(--ink-900);
  color: var(--paper);
}

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

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(26px, 5vw, 62px)) 0 clamp(44px, 6vw, 84px);
}

.page-about .about-hero__glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12, 32, 56, 0.92) 0%, rgba(10, 26, 47, 0.35) 58%, rgba(10, 26, 47, 0) 100%);
  pointer-events: none;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(45, 86, 127, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45, 86, 127, 0.16) 1px, transparent 1px);
  background-size: 76px 76px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.75), transparent 72%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.75), transparent 72%);
  pointer-events: none;
}

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

.page-about .about-hero .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
}

.page-about .about-hero__meta {
  display: grid;
  gap: 0;
  align-content: start;
}

.page-about .about-hero__code {
  margin: 14px 0 0;
  font-size: var(--step--1);
  letter-spacing: 0.12em;
  color: var(--mist-dim);
}

.page-about .about-rule {
  height: 10px;
  margin: 16px 0;
  background-image: repeating-linear-gradient(90deg, currentColor 0 1px, transparent 1px 12px);
  background-repeat: repeat-x;
  background-position: left bottom;
  color: var(--line-blue);
  opacity: 0.9;
}

.page-about .about-rule--gold {
  color: var(--gold);
  opacity: 0.85;
}

.page-about .about-mini {
  display: grid;
  gap: 10px;
  margin: 0;
}

.page-about .about-mini__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--about-rim-soft);
  font-size: var(--step--1);
}

.page-about .about-mini__row dt {
  margin: 0;
  color: var(--mist-dim);
  letter-spacing: 0.08em;
}

.page-about .about-mini__row dd {
  margin: 0;
  color: var(--gold);
  font-weight: 700;
}

.page-about .about-hero__main h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.16;
  font-size: clamp(30px, 4.4vw + 8px, 58px);
  color: var(--paper);
  max-width: 18ch;
}

.page-about .about-hero__lead {
  margin: clamp(16px, 2vw, 24px) 0 0;
  font-size: var(--step-1);
  line-height: 1.9;
  color: var(--mist);
  max-width: 48ch;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 14px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .about-hero__side {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-about .about-note {
  padding: clamp(18px, 2.2vw, 24px);
}

.page-about .about-note__title {
  margin: 0 0 10px;
  font-size: var(--step-1);
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-note__text {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.85;
  color: var(--mist-dim);
}

.page-about .about-hero__link {
  justify-self: start;
  font-size: var(--step--1);
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--about-gold-line);
  padding-bottom: 3px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-hero__link:hover {
  color: var(--gold-bright);
  border-bottom-color: var(--gold-bright);
}

.page-about .about-hero__figure {
  position: relative;
  margin: clamp(34px, 5vw, 58px) 0 0;
  overflow: hidden;
  border: 1px solid var(--about-rim-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-float);
  transition: border-color 0.28s var(--ease);
}

.page-about .about-hero__figure:hover {
  border-color: var(--about-gold-line);
}

.page-about .media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--about-rim-soft);
  border-radius: var(--radius);
  transition: border-color 0.28s var(--ease);
}

.page-about .media-frame:hover {
  border-color: var(--about-gold-line);
}

.page-about .media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 通用区块 ---------- */

.page-about .about-section {
  position: relative;
  padding: clamp(52px, 8vw, 104px) 0;
}

.page-about .about-section--ink {
  background: var(--ink-900);
}

.page-about .about-section--paper {
  --about-rim-soft: rgba(16, 42, 76, 0.22);
  --about-rim: rgba(16, 42, 76, 0.4);
  background: var(--paper);
  color: var(--ink-900);
}

.page-about .about-section--glass {
  --about-rim-soft: rgba(45, 86, 127, 0.4);
  background: linear-gradient(180deg, rgba(16, 42, 76, 0.78) 0%, rgba(10, 26, 47, 0.96) 100%);
  border-top: 1px solid rgba(45, 86, 127, 0.4);
  border-bottom: 1px solid rgba(45, 86, 127, 0.4);
}

.page-about .ledger {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
}

.page-about .ledger__rail {
  align-self: start;
}

.page-about .ledger__label {
  margin: 0;
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-about .ledger__body h2,
.page-about .about-head h2,
.page-about .region__body h2,
.page-about .about-return h2 {
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.22;
  font-size: clamp(24px, 2.3vw + 15px, 40px);
  margin: 0 0 clamp(16px, 2vw, 24px);
  color: inherit;
}

.page-about .ledger__body p {
  margin: 0 0 1.05em;
  font-size: var(--step-0);
  line-height: 1.92;
  color: var(--mist);
  max-width: 64ch;
}

.page-about .about-section--paper .ledger__body p {
  color: var(--ink-700);
}

.page-about .about-points {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  border-top: 1px solid var(--about-rim-soft);
}

.page-about .about-points__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2vw, 26px);
  padding: clamp(14px, 2vw, 20px) 0;
  border-bottom: 1px solid var(--about-rim-soft);
}

.page-about .about-points__num {
  padding-top: 0.42em;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--step--1);
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .about-points__title {
  margin: 0 0 6px;
  font-size: var(--step-1);
  font-weight: 700;
  color: inherit;
}

.page-about .about-points__text {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.88;
  color: var(--mist-dim);
}

.page-about .about-points--compact .about-points__item {
  padding: clamp(12px, 1.8vw, 18px) 0;
}

/* ---------- 章节头 ---------- */

.page-about .about-head {
  max-width: 64ch;
  margin-bottom: clamp(30px, 4vw, 52px);
}

.page-about .about-head__label {
  margin: 0 0 12px;
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-about .about-head__lead {
  margin: 14px 0 0;
  font-size: var(--step-1);
  line-height: 1.88;
  color: var(--mist);
}

.page-about .about-section--paper .about-head h2 {
  color: var(--ink-900);
}

.page-about .about-section--paper .about-head__lead {
  color: var(--ink-700);
}

.page-about .about-section--paper .about-head__label {
  color: #9A6F16;
}

/* ---------- 发展历程 ---------- */

.page-about .history {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
}

.page-about .history__aside {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .history__caption {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.8;
  color: var(--ink-700);
  padding-left: 12px;
  border-left: 2px solid var(--gold);
}

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 clamp(18px, 2.6vw, 30px);
  border-left: 1px solid var(--about-rim-soft);
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 clamp(24px, 3vw, 38px);
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-1 * clamp(18px, 2.6vw, 30px) - 4px);
  top: 0.5em;
  width: 7px;
  height: 7px;
  background: var(--gold);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--about-gold-soft);
}

.page-about .timeline__year {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--step--1);
  letter-spacing: 0.18em;
  color: #9A6F16;
}

.page-about .timeline__title {
  margin: 0 0 8px;
  font-size: var(--step-2);
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink-900);
}

.page-about .timeline__text {
  margin: 0;
  font-size: var(--step-0);
  line-height: 1.9;
  color: var(--ink-700);
  max-width: 62ch;
}

/* ---------- 服务地区 ---------- */

.page-about .region {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-about .region__body h2 {
  margin-top: 12px;
}

.page-about .region__body > p {
  margin: 0;
  font-size: var(--step-0);
  line-height: 1.92;
  color: var(--mist);
  max-width: 58ch;
}

.page-about .fact-list {
  display: grid;
  gap: 0;
  margin: clamp(22px, 3vw, 32px) 0 0;
  border-top: 1px solid var(--about-rim-soft);
}

.page-about .fact-list__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 5px;
  padding: clamp(12px, 1.8vw, 18px) 0;
  border-bottom: 1px solid var(--about-rim-soft);
}

.page-about .fact-list__key {
  margin: 0;
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-about .fact-list__val {
  margin: 0;
  font-size: var(--step-0);
  line-height: 1.85;
  color: var(--paper);
}

.page-about .region__actions {
  margin-top: clamp(20px, 2.6vw, 28px);
}

/* ---------- 团队 ---------- */

.page-about .team {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(12px, 2vw, 18px);
}

.page-about .team-card {
  border: 1px solid var(--about-rim-soft);
  border-radius: var(--radius);
  background: rgba(16, 42, 76, 0.5);
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.page-about .team-card:hover {
  border-color: var(--about-gold-line);
}

.page-about .team-card[open] {
  border-color: var(--about-gold-line);
  background: rgba(16, 42, 76, 0.82);
}

.page-about .team-card__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: clamp(15px, 2.2vw, 22px);
  cursor: pointer;
  list-style: none;
  font-size: var(--step-1);
  font-weight: 700;
  color: var(--paper);
}

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

.page-about .team-card__summary::after {
  content: "+";
  order: 3;
  font-weight: 800;
  font-size: var(--step-1);
  color: var(--gold);
  line-height: 1;
}

.page-about .team-card[open] .team-card__summary::after {
  content: "–";
}

.page-about .team-card__role {
  color: var(--paper);
}

.page-about .team-card__count {
  margin-left: auto;
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--mist-dim);
}

.page-about .team-card__body {
  padding: 0 clamp(15px, 2.2vw, 22px) clamp(18px, 2.4vw, 24px);
}

.page-about .team-card__body p {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.88;
  color: var(--mist);
}

/* ---------- 渠道合作 ---------- */

.page-about .partner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.4vw, 26px);
}

.page-about .partner__item {
  padding: clamp(18px, 2.6vw, 28px);
  border: 1px solid var(--about-rim-soft);
  border-left: 2px solid var(--gold);
  border-radius: var(--radius);
  background: rgba(10, 26, 47, 0.5);
  transition: border-color 0.25s var(--ease), transform 0.2s var(--ease);
}

.page-about .partner__item:hover {
  border-color: var(--about-gold-line);
  border-left-color: var(--gold-bright);
  transform: translateY(-2px);
}

.page-about .partner__index {
  margin: 0 0 10px;
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .partner__title {
  margin: 0 0 10px;
  font-size: var(--step-2);
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper);
}

.page-about .partner__text {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.88;
  color: var(--mist);
}

.page-about .partner__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: clamp(26px, 3.4vw, 40px);
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--about-rim-soft);
  border-radius: var(--radius);
  background: var(--about-gold-soft);
}

.page-about .partner__cta-text {
  margin: 0;
  font-size: var(--step-0);
  line-height: 1.8;
  color: var(--paper);
  max-width: 60ch;
}

/* ---------- 返回快捷通道 ---------- */

.page-about .about-return {
  border-top: 1px solid var(--about-rim-soft);
}

.page-about .about-return__text {
  margin: 0;
  font-size: var(--step-0);
  line-height: 1.88;
  color: var(--mist);
  max-width: 60ch;
}

.page-about .about-return__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  margin-top: clamp(20px, 2.8vw, 30px);
}

.page-about .about-return__links a {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border: 1px solid var(--about-rim);
  border-radius: var(--radius);
  color: var(--paper);
  font-size: var(--step--1);
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), transform 0.12s var(--ease);
}

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

.page-about .about-return__links a:active {
  transform: translateY(1px);
}

.page-about .about-return__legal {
  margin: clamp(22px, 3vw, 32px) 0 0;
  font-size: var(--step--1);
  letter-spacing: 0.08em;
  color: var(--mist-dim);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .fact-list__row {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: clamp(14px, 2vw, 28px);
    align-items: baseline;
  }

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

@media (min-width: 780px) {
  .page-about .team {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about .ledger {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: clamp(28px, 4.5vw, 68px);
  }

  .page-about .ledger__rail {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(170px, 2.2fr) minmax(0, 6.4fr) minmax(180px, 3fr);
    gap: clamp(24px, 3vw, 46px);
  }

  .page-about .history {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: clamp(32px, 5vw, 70px);
  }

  .page-about .history__aside {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }

  .page-about .region {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 70px);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .partner__item,
  .page-about .about-return__links a,
  .page-about .media-frame,
  .page-about .team-card {
    transition: none;
  }

  .page-about .partner__item:hover {
    transform: none;
  }
}
<<<END>>>