.page-about {
  background: var(--pearl);
  color: var(--ink);
  font-family: var(--font-body);
}

.page-about a {
  color: var(--tide);
}

.page-about .num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 26px) 0 46px;
  background: var(--abyss);
  color: var(--pearl);
}

.page-about .about-hero__backdrop {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(120% 92% at 88% 0%, rgba(45, 226, 230, 0.16), transparent 62%),
    radial-gradient(92% 72% at 0% 100%, rgba(200, 169, 106, 0.18), transparent 66%),
    repeating-linear-gradient(90deg, rgba(154, 163, 160, 0.14) 0 1px, transparent 1px 84px),
    repeating-linear-gradient(0deg, rgba(154, 163, 160, 0.1) 0 1px, transparent 1px 84px);
}

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

.page-about .about-hero__crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 24px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: rgba(247, 244, 236, 0.7);
}

.page-about .about-hero__crumbs a {
  color: rgba(247, 244, 236, 0.86);
  text-decoration: none;
  border-bottom: 1px solid rgba(247, 244, 236, 0.28);
}

.page-about .about-hero__crumbs a:hover {
  border-bottom-color: var(--cyan);
  color: var(--pearl);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  padding: 9px;
  border: 1px solid rgba(247, 244, 236, 0.22);
  background: rgba(11, 58, 79, 0.55);
  box-shadow: var(--shadow-card);
}

.page-about .about-hero__figure::before,
.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid var(--cyan);
  opacity: 0.8;
}

.page-about .about-hero__figure::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.page-about .about-hero__figure::after {
  right: -1px;
  bottom: -1px;
  border-left: 0;
  border-top: 0;
  border-color: var(--gold);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  filter: saturate(0.9);
}

.page-about .about-hero__figure figcaption {
  margin-top: 9px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: rgba(247, 244, 236, 0.6);
}

.page-about .about-hero__copy h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(36px, 7.6vw, 74px);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.01em;
  color: var(--pearl);
}

.page-about .about-hero__lead {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(247, 244, 236, 0.82);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  border: 1px solid rgba(247, 244, 236, 0.16);
  background: rgba(247, 244, 236, 0.16);
}

.page-about .about-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: rgba(6, 42, 58, 0.72);
}

.page-about .about-hero__stats .num {
  font-size: 30px;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-about .about-hero__stat-label {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(247, 244, 236, 0.66);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 主体双栏 ---------- */
.page-about .about-doc {
  padding-top: 0;
  padding-bottom: 8px;
}

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

.page-about .about-rail__label {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--clay);
}

.page-about .about-rail__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-left: 1px solid var(--rule-light);
}

.page-about .about-rail__list li {
  margin: 0;
}

.page-about .about-rail__list a {
  display: block;
  padding: 9px 0 9px 14px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: rgba(16, 38, 46, 0.62);
  text-decoration: none;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-about .about-rail__list a:hover,
.page-about .about-rail__list a[aria-current="true"] {
  color: var(--ink);
  border-left-color: var(--coral);
}

/* ---------- 章节 ---------- */
.page-about .about-sec {
  padding: 52px 0;
  border-bottom: var(--rule-dark);
}

.page-about .about-sec__num {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: 0.28em;
  color: var(--clay);
}

.page-about .about-sec__head h2 {
  margin: 0;
  color: var(--ink);
}

.page-about .about-sec__lead {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(16, 38, 46, 0.78);
}

/* ---------- 01 品牌档案 ---------- */
.page-about .about-archive {
  display: grid;
  gap: 28px;
  margin-top: 32px;
}

.page-about .about-archive__lede p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.88;
  color: rgba(16, 38, 46, 0.82);
}

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

.page-about .about-archive__points {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: rgba(154, 163, 160, 0.34);
  border: 1px solid rgba(154, 163, 160, 0.34);
}

.page-about .about-archive__points li {
  padding: 20px 18px;
  background: var(--pearl);
}

.page-about .about-archive__points h3 {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--abyss);
}

.page-about .about-archive__points p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(16, 38, 46, 0.74);
}

/* ---------- 02 价值章程 ---------- */
.page-about .about-charter {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.page-about .about-charter__card {
  padding: 22px 20px 18px;
  background: var(--cream);
  border: 1px solid rgba(154, 163, 160, 0.4);
  box-shadow: var(--shadow-card);
}

.page-about .about-charter__card--ink {
  background: var(--depth);
  border-color: rgba(45, 226, 230, 0.32);
  color: var(--pearl);
}

.page-about .about-charter__idx {
  margin: 0 0 10px;
  font-size: 15px;
  letter-spacing: 0.2em;
  color: var(--clay);
}

.page-about .about-charter__card--ink .about-charter__idx {
  color: var(--cyan);
}

.page-about .about-charter__card h3 {
  margin: 0 0 10px;
  font-size: 21px;
  color: var(--abyss);
}

.page-about .about-charter__card--ink h3 {
  color: var(--pearl);
}

.page-about .about-charter__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(16, 38, 46, 0.78);
}

.page-about .about-charter__card--ink p {
  color: rgba(247, 244, 236, 0.84);
}

.page-about .about-charter__more {
  margin-top: 14px;
  border-top: 1px solid rgba(16, 38, 46, 0.16);
  padding-top: 12px;
}

.page-about .about-charter__card--ink .about-charter__more {
  border-top-color: rgba(247, 244, 236, 0.24);
}

.page-about .about-charter__more summary {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--tide);
  list-style: none;
}

.page-about .about-charter__card--ink .about-charter__more summary {
  color: var(--cyan);
}

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

.page-about .about-charter__more summary::after {
  content: "＋";
  font-size: 13px;
  line-height: 1;
}

.page-about .about-charter__more[open] summary::after {
  content: "－";
}

.page-about .about-charter__more p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
}

/* ---------- 03 全球版图 ---------- */
.page-about .about-map {
  margin-top: 30px;
  padding: clamp(18px, 4vw, 38px);
  background: var(--abyss);
  color: var(--pearl);
  border: 1px solid rgba(45, 226, 230, 0.22);
}

.page-about .about-map__figure {
  margin: 0 0 26px;
}

.page-about .about-map__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid rgba(247, 244, 236, 0.16);
  opacity: 0.94;
}

.page-about .about-map__figure figcaption {
  margin-top: 9px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: rgba(247, 244, 236, 0.58);
}

.page-about .about-map__body {
  display: grid;
  gap: 24px;
}

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

.page-about .about-map__link {
  fill: none;
  stroke: rgba(45, 226, 230, 0.42);
  stroke-width: 1;
  stroke-dasharray: 3 5;
}

.page-about .about-map__node circle {
  fill: var(--gold);
  transition: fill 0.16s var(--ease);
}

.page-about .about-map__node:hover circle {
  fill: var(--coral);
}

.page-about .about-map__node text {
  fill: rgba(247, 244, 236, 0.84);
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-about .about-map__list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: rgba(247, 244, 236, 0.18);
  border: 1px solid rgba(247, 244, 236, 0.18);
}

.page-about .about-map__list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  background: var(--depth);
}

.page-about .about-map__name {
  font-size: 15px;
  letter-spacing: 0.06em;
  color: rgba(247, 244, 236, 0.9);
}

.page-about .about-map__count {
  font-size: 22px;
  line-height: 1;
  color: var(--gold);
}

.page-about .about-map__note {
  margin: 24px 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(247, 244, 236, 0.18);
  font-size: 14px;
  line-height: 1.85;
  color: rgba(247, 244, 236, 0.74);
}

.page-about .about-map__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(45, 226, 230, 0.5);
}

/* ---------- 04 时间线 ---------- */
.page-about .about-tl {
  position: relative;
  margin-top: 28px;
}

.page-about .about-tl__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.page-about .about-tl__track {
  display: flex;
  overflow-x: auto;
  border-bottom: 1px solid rgba(16, 38, 46, 0.16);
}

.page-about .about-tl__track label {
  flex: 0 0 auto;
  padding: 10px 18px 12px;
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--rock);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-about .about-tl__track label:hover {
  color: var(--ink);
}

.page-about .about-tl__radio:focus-visible ~ .about-tl__track {
  outline: 2px solid var(--tide);
  outline-offset: 4px;
}

.page-about .about-tl__radio:nth-of-type(1):checked ~ .about-tl__track label:nth-child(1),
.page-about .about-tl__radio:nth-of-type(2):checked ~ .about-tl__track label:nth-child(2),
.page-about .about-tl__radio:nth-of-type(3):checked ~ .about-tl__track label:nth-child(3),
.page-about .about-tl__radio:nth-of-type(4):checked ~ .about-tl__track label:nth-child(4) {
  color: var(--clay);
  border-bottom-color: var(--coral);
}

.page-about .about-tl__panel {
  display: none;
  margin-top: 24px;
  padding-left: 18px;
  border-left: 2px solid var(--clay);
  animation: about-fade 240ms var(--ease) both;
}

.page-about .about-tl__radio:nth-of-type(1):checked ~ .about-tl__panels .about-tl__panel:nth-child(1),
.page-about .about-tl__radio:nth-of-type(2):checked ~ .about-tl__panels .about-tl__panel:nth-child(2),
.page-about .about-tl__radio:nth-of-type(3):checked ~ .about-tl__panels .about-tl__panel:nth-child(3),
.page-about .about-tl__radio:nth-of-type(4):checked ~ .about-tl__panels .about-tl__panel:nth-child(4) {
  display: block;
}

.page-about .about-tl__stage {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: 0.24em;
  color: var(--rock);
}

.page-about .about-tl__panel h3 {
  margin: 0 0 10px;
  font-size: 21px;
  color: var(--abyss);
}

.page-about .about-tl__panel p {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(16, 38, 46, 0.78);
}

.page-about .about-tl__figure {
  margin: 30px 0 0;
}

.page-about .about-tl__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid rgba(154, 163, 160, 0.42);
  box-shadow: var(--shadow-card);
}

.page-about .about-tl__figure figcaption {
  margin-top: 9px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--rock);
}

@keyframes about-fade {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 05 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.page-about .about-team__card {
  padding: 22px 20px;
  background: var(--pearl);
  border: 1px solid rgba(154, 163, 160, 0.42);
  box-shadow: var(--shadow-card);
}

.page-about .about-team__card h3 {
  margin: 14px 0 10px;
  font-size: 20px;
  color: var(--abyss);
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(16, 38, 46, 0.76);
}

.page-about .about-team__rhythm {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 24px;
  padding: 24px 20px;
  background: var(--cream);
  border-left: 3px solid var(--gold);
}

.page-about .about-team__rhythm-num {
  font-size: 52px;
  line-height: 1;
  color: var(--clay);
  letter-spacing: 0.02em;
}

.page-about .about-team__rhythm h3 {
  margin: 0 0 10px;
  font-size: 19px;
  color: var(--abyss);
}

.page-about .about-team__rhythm p {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: rgba(16, 38, 46, 0.78);
}

/* ---------- 06 合作与流程 ---------- */
.page-about .about-eco {
  display: grid;
  gap: 28px;
  margin-top: 30px;
}

.page-about .about-eco__partners h3 {
  margin: 0 0 12px;
  font-size: 20px;
  color: var(--abyss);
}

.page-about .about-eco__partners p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(16, 38, 46, 0.78);
}

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

.page-about .about-eco__partners a {
  color: var(--tide);
  border-bottom: 1px solid rgba(19, 90, 115, 0.4);
  text-decoration: none;
}

.page-about .about-eco__steps {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: rgba(154, 163, 160, 0.36);
  border: 1px solid rgba(154, 163, 160, 0.36);
}

.page-about .about-eco__steps li {
  padding: 18px;
  background: var(--pearl);
}

.page-about .about-eco__step-num {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--moss);
}

.page-about .about-eco__steps h3 {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--abyss);
}

.page-about .about-eco__steps p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(16, 38, 46, 0.74);
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding: 46px 0 56px;
}

.page-about .about-next h2 {
  margin: 0;
  color: var(--ink);
}

.page-about .about-next__lead {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(16, 38, 46, 0.76);
}

.page-about .about-next__links {
  display: grid;
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-next__links a {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  background: var(--depth);
  color: var(--pearl);
  text-decoration: none;
  font-size: 15px;
  letter-spacing: 0.02em;
  border-left: 3px solid var(--cyan);
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .about-next__links a:hover {
  background: var(--abyss);
  border-left-color: var(--coral);
}

.page-about .about-next__links .num {
  font-size: 18px;
  color: var(--gold);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

  .page-about .about-map__body {
    grid-template-columns: minmax(0, 1fr) 240px;
    align-items: center;
    gap: 28px;
  }

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

  .page-about .about-team__rhythm {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 24px;
  }

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

@media (min-width: 980px) {
  .page-about .about-hero {
    padding-top: calc(var(--header-h) + 40px);
    padding-bottom: 64px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: 52px;
    align-items: end;
  }

  .page-about .about-archive {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-eco {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 40px;
    align-items: start;
  }
}

@media (min-width: 1040px) {
  .page-about .about-doc {
    display: grid;
    grid-template-columns: 196px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-rail {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 28px);
    padding: 52px 0 0;
  }

  .page-about .about-charter {
    gap: 22px;
  }

  .page-about .about-charter__card:nth-child(even) {
    transform: translateY(26px);
  }

  .page-about .about-charter {
    margin-bottom: 26px;
  }

  .page-about .about-tl__panel {
    padding-left: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-tl__panel {
    animation: none;
  }

  .page-about .about-rail__list a,
  .page-about .about-map__node circle,
  .page-about .about-next__links a,
  .page-about .about-tl__track label {
    transition: none;
  }

  .page-about .about-charter__card:nth-child(even) {
    transform: none;
  }
}
<<<END>>>