.page-about {
  --about-rail: 210px;
  --about-line: rgba(201, 210, 206, 0.22);
  --about-line-soft: rgba(201, 210, 206, 0.12);
  color: var(--paper);
  background: var(--ink);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: 36px 0 48px;
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(74, 125, 255, 0.16), transparent 62%),
    radial-gradient(80% 70% at 4% 100%, rgba(107, 34, 51, 0.28), transparent 60%),
    linear-gradient(180deg, var(--ink-deep) 0%, var(--ink) 100%);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-hero__crumbs {
  margin-bottom: 28px;
}

.page-about .about-hero__kicker {
  margin: 0 0 18px;
  color: var(--slate);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: clamp(2.5rem, 9.5vw, 5.4rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .about-hero__lede {
  margin: 22px 0 0;
  max-width: 34em;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.85;
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 34px 0 0;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .about-facts__item {
  background: var(--ink-deep);
  padding: 14px 16px 16px;
}

.page-about .about-facts dt {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-about .about-facts dd {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.1;
  color: var(--paper);
}

/* ---------- 索引 + 主栏 ---------- */
.page-about .about-rail {
  display: grid;
  gap: 40px;
  padding: 44px 0 0;
}

.page-about .about-index {
  border-top: 1px solid var(--rule-strong);
  padding-top: 14px;
}

.page-about .about-index__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-index__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 13px;
  border: 1px solid var(--about-line);
  color: var(--mist);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  border-color: var(--gold);
  color: var(--paper);
  outline: none;
}

/* ---------- 章节骨架 ---------- */
.page-about .about-body {
  display: flex;
  flex-direction: column;
  gap: 56px;
  min-width: 0;
}

.page-about .about-sec {
  min-width: 0;
}

.page-about .about-sec__head {
  border-top: 1px solid var(--rule-strong);
  padding-top: 18px;
  margin-bottom: 26px;
}

.page-about .about-sec__head .kicker {
  margin: 0 0 12px;
  color: var(--slate);
}

.page-about .about-sec__head .section-title {
  margin: 0;
  font-weight: 300;
  font-size: clamp(1.5rem, 5vw, 2.2rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-sec__lede {
  margin: 14px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 品牌起点 ---------- */
.page-about .about-origin__grid {
  display: grid;
  gap: 26px;
}

.page-about .about-prose p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

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

.page-about .about-drop::first-letter {
  float: left;
  font-family: var(--font-mono);
  font-size: 3.1em;
  line-height: 0.86;
  padding: 4px 10px 0 0;
  color: var(--gold);
}

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

.page-about .about-frame .frame__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.62) contrast(1.04);
}

.page-about .about-frame .frame__caption {
  padding: 10px 12px;
  border-top: 1px solid var(--about-line-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--slate);
}

/* ---------- 服务台理念 ---------- */
.page-about .bench-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .bench-list__item {
  padding: 18px 18px 20px;
  border: 1px solid var(--about-line);
  border-left-width: 3px;
  background: rgba(10, 32, 27, 0.6);
}

.page-about .bench-list__item--panel {
  border-left-color: var(--blue);
}

.page-about .bench-list__item--archive {
  border-left-color: var(--wine);
}

.page-about .bench-list__item--board {
  border-left-color: var(--gold);
}

.page-about .bench-list__item--lamp {
  border-left-color: var(--amber);
}

.page-about .bench-list__item--axis {
  border-left-color: var(--indigo);
}

.page-about .bench-list__item .tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
  border: 1px solid var(--about-line);
  padding: 3px 7px;
  margin-bottom: 12px;
}

.page-about .bench-list__item .tag--data {
  color: var(--blue);
  border-color: rgba(74, 125, 255, 0.5);
}

.page-about .bench-list__item .tag--rank {
  color: var(--gold);
  border-color: rgba(214, 168, 75, 0.5);
}

.page-about .bench-list__item .tag--injury {
  color: var(--amber);
  border-color: rgba(224, 161, 90, 0.5);
}

.page-about .bench-list__item .tag--transfer {
  color: var(--slate);
  border-color: rgba(157, 183, 177, 0.45);
}

.page-about .bench-list__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .bench-list__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 时间线 ---------- */
.page-about .about-scale {
  display: block;
  width: 100%;
  max-width: 320px;
  height: 24px;
  margin-top: 16px;
  color: var(--slate);
}

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

.page-about .timeline__item {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0 22px;
  border-top: 1px solid var(--about-line-soft);
}

.page-about .timeline__item:first-child {
  border-top: 1px solid var(--rule-strong);
}

.page-about .timeline__year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1.2;
  color: var(--gold);
}

.page-about .timeline__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .timeline__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .timeline__item--figure {
  display: block;
  padding: 20px 0;
}

.page-about .about-frame--archive {
  max-width: 520px;
}

/* ---------- 团队 ---------- */
.page-about .team {
  border-top: 1px solid var(--rule-strong);
}

.page-about .team-item {
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .team-item__summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-about .team-item__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--gold);
}

.page-about .team-item[open] .team-item__summary::after {
  content: "−";
}

.page-about .team-item__summary:focus-visible {
  outline: 1px solid var(--blue);
  outline-offset: 2px;
}

.page-about .team-item__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate);
}

.page-about .team-item__name {
  font-size: 17px;
  color: var(--paper);
}

.page-about .team-item__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--blue);
}

.page-about .team-item__body {
  padding: 0 0 18px 34px;
}

.page-about .team-item__body p {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 内容原则（纸页） ---------- */
.page-about .principles {
  padding: 26px 22px 30px;
  border: 1px solid var(--about-line);
  color: var(--ink);
}

.page-about .principles__kicker {
  margin: 0 0 12px;
  color: var(--wine);
}

.page-about .principles__title {
  margin: 0 0 22px;
  font-weight: 400;
  font-size: clamp(1.4rem, 4.8vw, 1.9rem);
  line-height: 1.35;
  color: var(--ink);
}

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

.page-about .principles__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  padding-top: 16px;
  border-top: 1px solid rgba(14, 42, 36, 0.18);
}

.page-about .principles__item:first-child {
  border-top: 1px solid rgba(14, 42, 36, 0.4);
}

.page-about .principles__num {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--wine);
}

.page-about .principles__name {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--ink);
}

.page-about .principles__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: #2B4A42;
}

/* ---------- 本地运营 ---------- */
.page-about .local__grid {
  display: grid;
  gap: 24px;
}

.page-about .local__copy p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-contact {
  margin: 22px 0 0;
  border-top: 1px solid var(--about-line);
}

.page-about .about-contact__row {
  display: grid;
  gap: 2px;
  padding: 12px 0;
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .about-contact__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-about .about-contact__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-about .local__actions {
  margin-top: 22px;
}

/* ---------- 继续浏览 ---------- */
.page-about .about-next {
  border-top: 1px solid var(--rule-strong);
  padding-top: 18px;
}

.page-about .about-next__kicker {
  margin: 0 0 16px;
  color: var(--slate);
}

.page-about .about-next__list {
  list-style: none;
  margin: 0 0 8px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-line-soft);
}

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

.page-about .about-next__link {
  display: grid;
  gap: 4px;
  padding: 16px 14px;
  text-decoration: none;
  transition: background-color 0.2s var(--ease);
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  background: rgba(74, 125, 255, 0.12);
  outline: none;
}

.page-about .about-next__label {
  font-size: 16px;
  color: var(--paper);
}

.page-about .about-next__desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero {
    padding: 52px 0 64px;
  }

  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    max-width: 760px;
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 30px;
    align-items: start;
  }

  .page-about .bench-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .bench-list__item--axis {
    grid-column: 1 / -1;
  }

  .page-about .timeline__item {
    grid-template-columns: 86px minmax(0, 1fr);
    gap: 20px;
    padding: 24px 0 26px;
  }

  .page-about .timeline__year {
    font-size: 24px;
  }

  .page-about .principles {
    padding: 34px 32px 38px;
  }

  .page-about .principles__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 30px;
  }

  .page-about .local__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 30px;
    align-items: start;
  }

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

@media (min-width: 960px) {
  .page-about .about-rail {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-about .about-index__list {
    flex-direction: column;
    overflow: visible;
    gap: 0;
  }

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

  .page-about .about-index__item:last-child {
    border-bottom: 1px solid var(--about-line-soft);
  }

  .page-about .about-index__link {
    border: 0;
    padding: 12px 2px;
    flex-direction: column;
    align-items: flex-start;
    gap: 3px;
    white-space: normal;
    width: 100%;
  }

  .page-about .about-index__link:hover,
  .page-about .about-index__link:focus-visible {
    box-shadow: inset 0 -1px 0 var(--gold);
  }

  .page-about .about-body {
    gap: 72px;
  }

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

  .page-about .bench-list__item--axis {
    grid-column: auto;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index__link,
  .page-about .about-next__link {
    transition: none;
  }
}
<<<END>>>