.page-about {
  --about-radius: 2px;
  --about-dot-bg: var(--paper);
  background: var(--paper);
  color: var(--ink);
}

.page-about p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 26px 0 42px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 94% 6%, rgba(201, 162, 39, 0.22), rgba(201, 162, 39, 0) 46%),
    linear-gradient(180deg, rgba(221, 229, 222, 0.75), rgba(245, 241, 230, 0) 82%);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), rgba(201, 162, 39, 0) 58%);
}

.page-about .about-hero .crumbs {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-about .about-hero .crumbs a {
  color: var(--ink-green);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
}

.page-about .about-hero__kicker {
  margin: 20px 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--ink-green);
}

.page-about .about-hero h1 {
  margin: 0 0 18px;
  max-width: 920px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 7.2vw, 56px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .about-hero .lede {
  max-width: 660px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink);
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 28px 0 0;
  padding: 0;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

.page-about .about-facts__item {
  display: flex;
  flex-direction: column-reverse;
  gap: 5px;
  margin: 0;
  padding: 14px 16px;
  background: var(--paper);
}

.page-about .about-facts__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(24px, 5.4vw, 34px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink-green);
}

.page-about .about-facts__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 目录条 ---------- */
.page-about .about-toc {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.page-about .about-toc__list {
  display: flex;
  gap: 2px;
  margin: 0;
  padding: 8px 0;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-toc__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 13px;
  border: 1px solid transparent;
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--ink);
  text-decoration: none;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  border-color: var(--line-gold);
  background: rgba(201, 162, 39, 0.1);
  color: var(--ink-green);
}

.page-about .about-toc__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-section {
  padding: 48px 0;
}

.page-about .about-section--sage {
  --about-dot-bg: var(--sage);
  background: var(--sage);
}

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

.page-about .about-head {
  display: grid;
  gap: 8px;
  margin: 0 0 24px;
}

.page-about .about-head__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--ink-green);
}

.page-about h2 {
  margin: 0;
  max-width: 780px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 5vw, 38px);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .about-cols {
  display: grid;
  gap: 26px;
}

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

.page-about .about-quote {
  margin: 0 0 14px;
  padding: 10px 0 10px 18px;
  border-left: 3px solid var(--gold);
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-green);
}

.page-about .about-link {
  color: var(--ink-green);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid var(--gold);
  padding-bottom: 2px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .about-link:hover,
.page-about .about-link:focus-visible {
  color: var(--vermilion);
  border-bottom-color: var(--vermilion);
}

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

.page-about .about-lead {
  max-width: 720px;
  margin: 0 0 24px;
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--ink);
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 0 0 28px;
}

.page-about .figure__frame {
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: var(--shadow-paper);
}

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

.page-about .figure__caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 时间线 ---------- */
.page-about .tl {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(201, 162, 39, 0.16));
}

.page-about .tl__item {
  position: relative;
  padding-left: 44px;
  margin-bottom: 14px;
}

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

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 18px;
  width: 14px;
  height: 14px;
  box-sizing: content-box;
  border: 3px solid var(--gold);
  border-radius: 50%;
  background: var(--about-dot-bg, var(--paper));
}

.page-about .tl__year {
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 25px;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink-green);
}

.page-about .tl__year span {
  display: block;
  margin-top: 6px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-about .tl__panel {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  box-shadow: var(--shadow-paper);
  transition: border-color 0.2s var(--ease);
}

.page-about .tl__panel[open] {
  border-color: var(--line-gold);
}

.page-about .tl__summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 16px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

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

.page-about .tl__summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--gold);
}

.page-about .tl__panel[open] .tl__summary::after {
  content: "−";
}

.page-about .tl__body {
  padding: 14px 16px 16px;
  border-top: 1px solid var(--line-soft);
}

.page-about .tl__body p {
  font-size: 15px;
  line-height: 1.85;
}

.page-about .tl__list {
  display: grid;
  gap: 7px;
  margin: 10px 0 0;
  padding-left: 18px;
}

.page-about .tl__list li {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink);
}

.page-about .tl__list li::marker {
  color: var(--gold);
}

/* ---------- 团队 ---------- */
.page-about .team {
  display: grid;
  gap: 26px;
}

.page-about .team__grid {
  display: grid;
  gap: 12px;
}

.page-about .team__card {
  padding: 15px 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--ink-green);
  border-radius: var(--about-radius);
  box-shadow: var(--shadow-paper);
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-about .team__card:hover {
  transform: translateY(-2px);
  border-left-color: var(--vermilion);
  box-shadow: 0 18px 30px -22px rgba(15, 59, 50, 0.62);
}

.page-about .team__index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .team__role {
  margin: 6px 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .team__duty {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--muted);
}

/* ---------- 流程 ---------- */
.page-about .process {
  display: grid;
  gap: 28px;
}

.page-about .flow {
  margin: 0;
  padding: 0;
  list-style: none;
  background-image: linear-gradient(var(--line-gold), var(--line-gold));
  background-repeat: no-repeat;
  background-position: 37px 24px;
  background-size: 2px calc(100% - 48px);
}

.page-about .flow__panel {
  margin-bottom: 10px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
}

.page-about .flow__panel[open] {
  border-color: var(--line-gold);
}

.page-about .flow__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 16px;
  list-style: none;
  cursor: pointer;
}

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

.page-about .flow__num {
  position: relative;
  z-index: 1;
  flex: none;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: var(--ink-green);
  color: var(--gold-pale);
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.04em;
}

.page-about .flow__title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.page-about .flow__summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--ink-green);
}

.page-about .flow__panel[open] .flow__summary::after {
  content: "−";
}

.page-about .flow__body {
  padding: 0 16px 16px 74px;
}

.page-about .flow__body p {
  font-size: 14.8px;
  line-height: 1.85;
  color: var(--ink);
}

.page-about .process__figure {
  margin: 0;
}

/* ---------- 服务范围 ---------- */
.page-about .reach {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--ink-green);
}

.page-about .reach__item {
  position: relative;
  padding: 18px 0 18px 44px;
  border-bottom: 1px solid var(--line);
}

.page-about .reach__no {
  position: absolute;
  left: 0;
  top: 20px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--gold);
}

.page-about .reach__title {
  margin: 0 0 5px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-about .reach__text {
  margin: 0;
  font-size: 14.8px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 合作 ---------- */
.page-about .partners {
  display: grid;
  gap: 20px;
}

.page-about .partners__item {
  padding: 4px 0 4px 20px;
  border-left: 3px solid var(--gold);
}

.page-about .partners__label {
  display: inline-block;
  margin-bottom: 9px;
  padding: 3px 8px;
  border: 1px solid var(--line-gold);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink-green);
}

.page-about .partners__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

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

/* ---------- 联系 ---------- */
.page-about .about-section--ink {
  background: var(--ink-green);
  color: var(--paper);
}

.page-about .about-section--ink .about-head__index {
  color: var(--gold);
}

.page-about .about-section--ink h2 {
  color: var(--white);
}

.page-about .about-section--ink p {
  color: rgba(245, 241, 230, 0.88);
}

.page-about .about-section--ink .about-link {
  color: var(--gold-pale);
  border-bottom-color: var(--gold);
}

.page-about .about-section--ink .about-link:hover {
  color: var(--white);
  border-bottom-color: var(--white);
}

.page-about .contact-grid {
  display: grid;
  gap: 30px;
}

.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-about .about-section--ink .btn--ghost {
  border-color: rgba(232, 217, 168, 0.62);
  color: var(--gold-pale);
}

.page-about .about-section--ink .btn--ghost:hover {
  border-color: var(--gold);
  color: var(--white);
}

.page-about .contact-list {
  margin: 0;
  border-top: 1px solid rgba(232, 217, 168, 0.34);
}

.page-about .contact-list__row {
  display: grid;
  gap: 4px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(232, 217, 168, 0.22);
}

.page-about .contact-list__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .contact-list__value {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-about .contact-list__value a {
  color: var(--gold-pale);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 217, 168, 0.5);
}

.page-about .contact-list__value a:hover {
  color: var(--white);
  border-bottom-color: var(--white);
}

/* ---------- 断点 ---------- */
@media (min-width: 560px) {
  .page-about .about-section {
    padding: 58px 0;
  }

  .page-about .contact-list__row {
    grid-template-columns: 112px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-about .about-hero {
    padding: 34px 0 52px;
  }

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

  .page-about .about-toc__list {
    padding: 10px 0;
  }

  .page-about .reach__item {
    display: grid;
    grid-template-columns: 46px 230px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
    padding: 18px 0;
  }

  .page-about .reach__no {
    position: static;
    top: auto;
  }

  .page-about .reach__title {
    margin: 0;
  }

  .page-about .team__card:nth-child(even) {
    margin-left: 26px;
  }
}

@media (min-width: 860px) {
  .page-about .about-cols {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-about .tl__inner {
    display: grid;
    grid-template-columns: 124px minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }

  .page-about .tl__year {
    margin-bottom: 0;
    padding-top: 14px;
    padding-right: 6px;
    font-size: 30px;
    text-align: right;
  }

  .page-about .tl__year span {
    text-align: right;
  }

  .page-about .team {
    grid-template-columns: 5fr 7fr;
    gap: 46px;
    align-items: start;
  }

  .page-about .process {
    grid-template-columns: 7fr 5fr;
    gap: 44px;
    align-items: start;
  }

  .page-about .process__figure {
    margin-top: 6px;
  }

  .page-about .contact-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 54px;
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .about-hero h1 {
    font-size: 56px;
  }

  .page-about .about-section {
    padding: 66px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-toc__link,
  .page-about .about-link,
  .page-about .team__card,
  .page-about .tl__panel {
    transition: none;
  }

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