.page-about {
  --about-sticky: calc(var(--header-h) + 40px);
  background: var(--ink);
  color: var(--paper);
  overflow-x: clip;
}

.page-about .breadcrumbs {
  font-size: 12px;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .breadcrumbs__list li {
  display: flex;
  align-items: center;
  color: var(--grey);
}

.page-about .breadcrumbs__list li + li::before {
  content: "›";
  margin-right: 8px;
  color: rgba(143, 163, 155, .6);
}

.page-about .breadcrumbs__list a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .breadcrumbs__list a:hover,
.page-about .breadcrumbs__list a:focus-visible {
  color: var(--gold-hi);
  border-bottom-color: var(--gold);
}

.page-about .sec-head {
  max-width: 62ch;
}

.page-about .sec-head h2 {
  margin: 10px 0 0;
  font-size: clamp(24px, 3.4vw, 42px);
  line-height: 1.12;
  letter-spacing: -.012em;
  font-weight: 700;
}

.page-about .sec-lede {
  margin-top: 14px;
  font-size: clamp(15px, 1.1vw, 16px);
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(26px, 4vw, 44px) clamp(48px, 7vw, 92px);
  background:
    radial-gradient(115% 80% at 82% 6%, rgba(216, 166, 58, .18), rgba(11, 43, 36, 0) 60%),
    linear-gradient(180deg, #0B2B24 0%, #123A31 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--gold) 0%, rgba(216, 166, 58, 0) 72%);
}

.page-about .hero-split {
  display: grid;
  gap: clamp(30px, 4vw, 56px);
}

.page-about .hero-copy h1 {
  margin: 12px 0 0;
  font-size: clamp(30px, 5.2vw, 60px);
  line-height: 1.06;
  letter-spacing: -.018em;
  font-weight: 700;
  max-width: 15em;
}

.page-about .hero-lede {
  margin-top: clamp(16px, 2vw, 24px);
  max-width: 34em;
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.82;
  color: var(--ink-soft);
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 34px);
}

.page-about .readout {
  position: relative;
  border: 1px solid var(--line-gold);
  padding: 16px clamp(14px, 2vw, 22px) 8px;
  background: linear-gradient(180deg, rgba(30, 74, 62, .55), rgba(11, 43, 36, .92));
}

.page-about .readout::before {
  content: "";
  position: absolute;
  inset: 4px;
  border: 1px solid rgba(216, 166, 58, .14);
  pointer-events: none;
}

.page-about .readout__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-gold);
}

.page-about .readout__tag {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--gold);
}

.page-about .readout__sub {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--grey);
}

.page-about .readout__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 4px 12px;
  padding: 13px 0 10px;
}

.page-about .readout__row + .readout__row {
  border-top: 1px solid var(--line-grey);
}

.page-about .readout__label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink-soft);
}

.page-about .readout__num {
  font-family: var(--font-num);
  font-size: clamp(26px, 3vw, 34px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--gold-hi);
}

.page-about .readout__track {
  grid-column: 1 / -1;
  display: block;
  height: 3px;
  margin-top: 8px;
  background: rgba(143, 163, 155, .16);
}

.page-about .readout__fill {
  display: block;
  height: 100%;
  width: var(--w, 50%);
  background: linear-gradient(90deg, rgba(216, 166, 58, .45), var(--gold-hi));
}

/* ---------- 品牌由来 ---------- */
.page-about .about-origin {
  background: var(--paper);
  color: var(--text);
}

.page-about .about-origin .eyebrow,
.page-about .about-team .eyebrow,
.page-about .about-cred .eyebrow {
  color: #8A6A1E;
}

.page-about .origin-grid {
  display: grid;
  gap: clamp(30px, 4vw, 56px);
}

.page-about .origin-copy h2 {
  margin: 10px 0 0;
  font-size: clamp(24px, 3.2vw, 40px);
  line-height: 1.15;
  letter-spacing: -.012em;
  font-weight: 700;
}

.page-about .origin-copy p {
  margin-top: 16px;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: #35443D;
}

.page-about .origin-points {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .origin-points li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.78;
  color: #2D3B34;
}

.page-about .origin-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 10px;
  height: 2px;
  background: var(--gold);
}

.page-about .origin-figure {
  position: relative;
  margin: 0;
  background: var(--ink-2);
}

.page-about .origin-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 7;
  object-fit: cover;
}

.page-about .origin-figure::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 100%;
  background: linear-gradient(180deg, rgba(11, 43, 36, .05) 40%, rgba(11, 43, 36, .62) 100%);
  pointer-events: none;
}

.page-about .origin-figure figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  padding: 16px 18px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(246, 241, 230, .88);
  border-top: 1px solid rgba(216, 166, 58, .4);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  position: relative;
  background: var(--ink-2);
  isolation: isolate;
}

.page-about .tl-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.page-about .tl-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .16;
}

.page-about .tl-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #0B2B24 0%, rgba(11, 43, 36, .78) 45%, #0B2B24 100%);
}

.page-about .about-timeline .container {
  position: relative;
  z-index: 1;
}

.page-about .tl-layout {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
  margin-top: clamp(26px, 4vw, 46px);
}

.page-about .tl-rail {
  display: none;
}

.page-about .tl-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 18px;
  border-left: 1px solid var(--line-gold);
}

.page-about .tl-rail__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 0;
  color: rgba(246, 241, 230, .58);
  text-decoration: none;
  transition: color .22s var(--ease);
}

.page-about .tl-rail__link::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 50%;
  width: 7px;
  height: 7px;
  margin-top: -3.5px;
  background: rgba(143, 163, 155, .55);
  transition: background-color .22s var(--ease), box-shadow .22s var(--ease);
}

.page-about .tl-rail__link:hover,
.page-about .tl-rail__link:focus-visible {
  color: var(--gold-hi);
}

.page-about .tl-rail__link:hover::before,
.page-about .tl-rail__link:focus-visible::before {
  background: var(--gold-hi);
  box-shadow: 0 0 0 4px rgba(216, 166, 58, .22);
}

.page-about .tl-rail__num {
  font-family: var(--font-num);
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-about .tl-rail__name {
  font-size: 14px;
}

.page-about .tl-item {
  padding: clamp(20px, 3vw, 30px) 0;
  border-top: 1px solid var(--line-grey);
}

.page-about .tl-item:first-child {
  border-top: 1px solid var(--line-gold);
}

.page-about .tl-item__meta {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--gold);
}

.page-about .tl-item h3 {
  margin: 10px 0 0;
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -.008em;
}

.page-about .tl-item p {
  margin: 12px 0 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background: var(--paper);
  color: var(--text);
}

.page-about .team-head {
  display: grid;
  gap: clamp(24px, 3.5vw, 48px);
}

.page-about .team-head h2 {
  margin: 10px 0 0;
  font-size: clamp(24px, 3.2vw, 40px);
  line-height: 1.15;
  letter-spacing: -.012em;
  font-weight: 700;
}

.page-about .team-head p {
  margin-top: 14px;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: #35443D;
}

.page-about .team-figure {
  margin: 0;
  background: var(--ink-2);
}

.page-about .team-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-about .team-bars {
  display: grid;
  gap: 22px;
  margin-top: clamp(28px, 4vw, 48px);
}

.page-about .team-bar {
  outline: none;
  padding: 14px 0 12px;
  border-top: 1px solid rgba(20, 32, 28, .16);
}

.page-about .team-bar:focus-visible {
  border-top-color: var(--gold);
}

.page-about .team-bar__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.page-about .team-bar__name {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .01em;
}

.page-about .team-bar__count {
  font-family: var(--font-num);
  font-size: 26px;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-about .team-bar__count em {
  font-style: normal;
  font-family: var(--font-sans);
  font-size: 13px;
  color: #5C6B64;
  margin-left: 2px;
}

.page-about .team-bar__track {
  display: block;
  margin-top: 10px;
  height: 9px;
  background: rgba(20, 32, 28, .09);
  overflow: hidden;
}

.page-about .team-bar__fill {
  display: block;
  height: 100%;
  width: var(--pct, 0%);
  transition: width .5s var(--ease), filter .25s var(--ease);
}

.page-about .team-bar__fill--data { background: var(--ink-3); }
.page-about .team-bar__fill--content { background: var(--gold); }
.page-about .team-bar__fill--support { background: var(--cyan); }
.page-about .team-bar__fill--ops { background: #7E918A; }

.page-about .team-bar:hover .team-bar__fill,
.page-about .team-bar:focus .team-bar__fill {
  filter: brightness(1.08);
}

.page-about .team-bar__note {
  margin: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-size: 14px;
  line-height: 1.72;
  color: #4C5B54;
  transition: max-height .32s var(--ease), opacity .32s var(--ease), margin-top .32s var(--ease);
}

.page-about .team-bar:hover .team-bar__note,
.page-about .team-bar:focus .team-bar__note {
  max-height: 9em;
  opacity: 1;
  margin-top: 10px;
}

/* ---------- 数据 ---------- */
.page-about .about-data {
  background: var(--ink);
  color: var(--paper);
}

.page-about .data-grid {
  display: grid;
  gap: clamp(30px, 4vw, 56px);
  margin-top: clamp(24px, 3vw, 40px);
}

.page-about .data-steps {
  list-style: none;
  counter-reset: step;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-about .data-steps li {
  counter-increment: step;
  position: relative;
  padding-left: 48px;
}

.page-about .data-steps li::before {
  content: "0" counter(step);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-num);
  font-size: 20px;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-about .data-steps strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper);
}

.page-about .data-steps span {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-about .data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.page-about .data-table caption {
  text-align: left;
  padding-bottom: 12px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--grey);
}

.page-about .data-table th,
.page-about .data-table td {
  padding: 13px 0;
  border-bottom: 1px solid var(--line-grey);
  text-align: left;
  vertical-align: baseline;
}

.page-about .data-table th {
  font-weight: 400;
  line-height: 1.6;
  color: var(--ink-soft);
}

.page-about .data-table td {
  text-align: right;
  font-family: var(--font-num);
  font-size: 21px;
  letter-spacing: -.01em;
  color: var(--gold-hi);
  white-space: nowrap;
  padding-left: 16px;
}

.page-about .split-note {
  margin-top: 28px;
  padding: 16px 18px 18px;
  border: 1px solid var(--line-gold);
  background: rgba(30, 74, 62, .35);
}

.page-about .split-note__title {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--paper);
}

.page-about .split-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0;
}

.page-about .split-tags li {
  padding: 4px 10px;
  border: 1px solid var(--line-gold-strong);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gold-hi);
}

.page-about .split-note__text {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-soft);
}

/* ---------- 资质 ---------- */
.page-about .about-cred {
  background: var(--paper);
  color: var(--text);
}

.page-about .cred-grid {
  display: grid;
  gap: clamp(26px, 3.5vw, 52px);
}

.page-about .cred-copy h2 {
  margin: 10px 0 0;
  font-size: clamp(24px, 3.2vw, 40px);
  line-height: 1.15;
  letter-spacing: -.012em;
  font-weight: 700;
}

.page-about .cred-copy p {
  margin-top: 14px;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.85;
  color: #3A4A43;
}

.page-about .cred-tail a {
  color: #8A6A1E;
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
}

.page-about .cred-tail a:hover,
.page-about .cred-tail a:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.page-about .cred-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.page-about .cred-table thead th {
  padding: 0 10px 10px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .16em;
  color: #6B7A73;
  border-bottom: 1px solid rgba(20, 32, 28, .3);
}

.page-about .cred-table tbody th,
.page-about .cred-table tbody td {
  padding: 14px 10px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(20, 32, 28, .14);
}

.page-about .cred-table tbody th {
  width: 44%;
  font-weight: 500;
  line-height: 1.6;
  color: #35443D;
  padding-left: 0;
}

.page-about .cred-table tbody td {
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink);
  word-break: break-word;
}

.page-about .cred-table tbody tr {
  transition: background-color .22s var(--ease);
}

.page-about .cred-table tbody tr:hover {
  background: rgba(216, 166, 58, .14);
}

/* ---------- 承诺 ---------- */
.page-about .about-promise {
  background: linear-gradient(180deg, var(--ink-2) 0%, #0B2B24 72%);
  color: var(--paper);
}

.page-about .promise-list {
  list-style: none;
  margin: clamp(24px, 3vw, 40px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line-gold);
}

.page-about .promise-list li {
  display: grid;
  gap: 10px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line-grey);
}

.page-about .promise-list h3 {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0;
  font-size: 18px;
  line-height: 1.3;
  font-weight: 700;
}

.page-about .promise-list h3 span {
  font-family: var(--font-num);
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-about .promise-list p {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-about .promise-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(26px, 3vw, 38px);
}

.page-about .promise-contact {
  margin: 24px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--grey);
}

.page-about .promise-tail {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .promise-tail a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 214, 196, .5);
}

.page-about .promise-tail a:hover,
.page-about .promise-tail a:focus-visible {
  color: var(--gold-hi);
  border-bottom-color: var(--gold-hi);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .team-bars {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px 44px;
  }

  .page-about .promise-list li {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 12px 32px;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .origin-grid {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 380px);
    align-items: start;
  }

  .page-about .cred-grid {
    grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-about .hero-split {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: end;
  }

  .page-about .tl-layout {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .tl-rail {
    display: block;
    position: sticky;
    top: var(--about-sticky);
    align-self: start;
  }

  .page-about .data-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-about .team-head {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    align-items: end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-bar__fill,
  .page-about .team-bar__note,
  .page-about .cred-table tbody tr,
  .page-about .tl-rail__link,
  .page-about .breadcrumbs__list a {
    transition: none;
  }
}
<<<END>>>

.page-about {
  --pct: 1rem;
  --w: 1rem;
}