.page-about {
  --about-card: rgba(16, 31, 54, .05);
  --about-card-hover: rgba(16, 31, 54, .085);
  --about-mist: rgba(215, 222, 232, .46);
  --about-node: var(--paper-50);
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .wrap {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-about .mono {
  font-family: var(--font-mono);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  background: var(--ink-950);
  color: var(--paper-50);
  padding: 22px 0 0;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(215, 222, 232, .07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(215, 222, 232, .07) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}

.page-about .about-hero__crumb,
.page-about .about-hero__inner,
.page-about .about-facts-wrap {
  position: relative;
  z-index: 1;
}

.page-about .about-hero .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 12px;
  letter-spacing: .08em;
}

.page-about .about-hero .breadcrumb__item {
  color: rgba(244, 246, 249, .6);
}

.page-about .about-hero .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 8px;
  color: rgba(217, 160, 102, .6);
}

.page-about .about-hero .breadcrumb__link {
  color: var(--brass-300);
  text-decoration: none;
}

.page-about .about-hero .breadcrumb__link:hover {
  color: var(--paper-50);
}

.page-about .about-hero__inner {
  display: grid;
  gap: 30px;
  padding-top: 26px;
  padding-bottom: 34px;
}

.page-about .about-hero .kicker {
  display: inline-block;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--brass-300);
  text-transform: uppercase;
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7.2vw, 56px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--paper-50);
}

.page-about .about-hero__lede {
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.72;
  color: rgba(244, 246, 249, .82);
  max-width: 54ch;
}

.page-about .about-hero__sub {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(217, 160, 102, .92);
  max-width: 52ch;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: var(--r-pill);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background .28s var(--ease), color .28s var(--ease), border-color .28s var(--ease);
}

.page-about .btn--solid {
  background: var(--brass-500);
  color: var(--ink-950);
  border: 1px solid var(--brass-500);
}

.page-about .btn--solid:hover {
  background: var(--brass-300);
  border-color: var(--brass-300);
}

.page-about .about-hero .btn--ghost,
.page-about .about-reach__aside .btn--ghost {
  background: transparent;
  color: var(--paper-50);
  border: 1px solid rgba(215, 222, 232, .38);
}

.page-about .about-hero .btn--ghost:hover,
.page-about .about-reach__aside .btn--ghost:hover {
  border-color: var(--brass-300);
  color: var(--brass-300);
}

.page-about .about-hero__figure {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line-dark);
  box-shadow: 0 24px 60px rgba(0, 0, 0, .38);
}

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

.page-about .about-facts-wrap {
  padding-bottom: 0;
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: rgba(215, 222, 232, .18);
  border-top: 1px solid rgba(215, 222, 232, .18);
}

.page-about .about-facts__item {
  background: var(--ink-950);
  padding: 16px 14px 20px;
}

.page-about .about-facts__item dt {
  font-size: 11px;
  letter-spacing: .14em;
  color: rgba(244, 246, 249, .55);
}

.page-about .about-facts__item dd {
  margin: 8px 0 0;
  font-size: 19px;
  line-height: 1.2;
  color: var(--brass-300);
  word-break: break-word;
}

/* ---------- 通用章节 ---------- */
.page-about .section {
  padding: 54px 0;
}

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

.page-about .section__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--brass-500);
}

.page-about .section__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 4.4vw, 32px);
  line-height: 1.18;
  letter-spacing: -.015em;
}

.page-about .section__lede {
  margin: 12px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--slate-700);
}

/* ---------- 起点 ---------- */
.page-about .about-origin__grid {
  display: grid;
  gap: 24px;
}

.page-about .about-origin__text p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate-700);
}

.page-about .about-origin__text p:first-child {
  font-size: 16px;
  color: var(--ink-950);
}

.page-about .about-principles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-about .about-principles li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--brass-500);
  border-radius: var(--r-sm);
  background: var(--about-card);
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate-700);
}

.page-about .about-principles .mono {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--brass-500);
  padding-top: 3px;
}

/* ---------- 里程碑 ---------- */
.page-about .about-miles__figure {
  margin: 0 0 26px;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
}

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

.page-about .media__caption {
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--slate-500);
  background: var(--about-mist);
  font-family: var(--font-mono);
}

.page-about .about-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 24px;
}

.page-about .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .chip {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  padding: 8px 14px;
  min-height: 36px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: transparent;
  color: var(--slate-700);
  cursor: pointer;
  transition: background .24s var(--ease), color .24s var(--ease), border-color .24s var(--ease);
}

.page-about .chip:hover {
  border-color: var(--brass-500);
  color: var(--brass-500);
}

.page-about .chip[aria-pressed="true"] {
  background: var(--ink-950);
  border-color: var(--ink-950);
  color: var(--brass-300);
}

.page-about .filter-count {
  margin: 0;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--slate-500);
}

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

.page-about .miles::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--line);
}

.page-about .mile {
  position: relative;
  padding-left: 36px;
  padding-bottom: 22px;
}

.page-about .mile::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--about-node);
  border: 2px solid var(--brass-500);
  box-sizing: border-box;
}

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

.page-about .mile__year {
  font-size: 20px;
  letter-spacing: .04em;
  color: var(--brass-500);
  margin-bottom: 10px;
}

.page-about .mile__card {
  background: var(--about-card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 18px 18px 16px;
  transition: background .3s var(--ease), border-color .3s var(--ease);
}

.page-about .mile__card:hover {
  background: var(--about-card-hover);
  border-color: rgba(183, 121, 60, .45);
}

.page-about .mile__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--slate-500);
}

.page-about .mile__title {
  margin: 8px 0 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink-950);
}

.page-about .mile__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--slate-700);
}

.page-about .mile__more {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
}

.page-about .mile__more summary {
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-950);
}

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

.page-about .mile__more summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--brass-500);
}

.page-about .mile__more[open] summary::before {
  content: "–";
}

.page-about .mile__more p {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--slate-500);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  position: relative;
  background: var(--ink-900);
  color: var(--paper-50);
  overflow: hidden;
}

.page-about .about-team::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(215, 222, 232, .06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(215, 222, 232, .06) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}

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

.page-about .about-team .section__title {
  color: var(--paper-50);
}

.page-about .about-team .section__num {
  color: var(--brass-300);
}

.page-about .about-team .section__lede {
  color: rgba(244, 246, 249, .72);
}

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

.page-about .about-team__figure {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line-dark);
}

.page-about .about-team__figure .media__caption {
  background: rgba(10, 20, 36, .72);
  color: var(--brass-300);
}

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

.page-about .team-item {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  padding: 16px 16px 18px;
  border: 1px solid var(--line-dark);
  border-radius: var(--r-md);
  background: rgba(10, 20, 36, .42);
}

.page-about .team-item__num {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--brass-300);
  padding-top: 2px;
}

.page-about .team-item__title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper-50);
}

.page-about .team-item__title .mono {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .08em;
  padding: 3px 9px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(217, 160, 102, .5);
  color: var(--brass-300);
}

.page-about .team-item p {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: rgba(244, 246, 249, .76);
}

/* ---------- 覆盖 ---------- */
.page-about .about-reach__grid {
  display: grid;
  gap: 26px;
}

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

.page-about .data-list__row {
  border-bottom: 1px solid var(--line);
}

.page-about .data-list__row summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 46px;
  padding: 12px 2px;
  list-style: none;
  cursor: pointer;
}

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

.page-about .data-list__key {
  font-size: 15px;
  color: var(--ink-950);
}

.page-about .data-list__val {
  font-size: 15px;
  color: var(--brass-500);
  white-space: nowrap;
}

.page-about .data-list__body p {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--slate-500);
}

.page-about .about-reach__aside {
  position: relative;
  overflow: hidden;
  background: var(--ink-950);
  color: var(--paper-50);
  border-radius: var(--r-lg);
  padding: 24px 22px 26px;
}

.page-about .about-reach__aside .kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--brass-300);
}

.page-about .about-reach__aside-title {
  margin: 12px 0 0;
  font-size: 20px;
  line-height: 1.35;
  font-weight: 700;
}

.page-about .about-reach__aside-text {
  margin: 10px 0 20px;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(244, 246, 249, .74);
}

/* ---------- 老用户 ---------- */
.page-about .about-return {
  background: var(--about-mist);
}

.page-about .about-return__lead {
  margin: 0 0 24px;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-950);
}

.page-about .about-return__steps {
  display: grid;
  gap: 14px;
}

.page-about .step {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px;
  background: var(--paper-50);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  border-top: 3px solid var(--brass-500);
}

.page-about .step__num {
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--brass-500);
}

.page-about .step h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink-950);
}

.page-about .step p {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--slate-700);
}

.page-about .about-return__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px dashed rgba(43, 59, 82, .28);
}

.page-about .about-return__foot p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate-700);
  max-width: 52ch;
}

/* ---------- 合作 ---------- */
.page-about .about-partners__panel {
  position: relative;
  overflow: hidden;
  background: var(--ink-950);
  color: var(--paper-50);
  border-radius: var(--r-lg);
  padding: 28px 22px;
  display: grid;
  gap: 26px;
}

.page-about .about-partners__panel .kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--brass-300);
}

.page-about .about-partners__title {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 4.2vw, 30px);
  line-height: 1.2;
  letter-spacing: -.015em;
  color: var(--paper-50);
}

.page-about .about-partners__intro p {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(244, 246, 249, .76);
}

.page-about .flow {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .flow li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  padding: 16px 0;
  border-top: 1px solid var(--line-dark);
}

.page-about .flow li:last-child {
  border-bottom: 1px solid var(--line-dark);
}

.page-about .flow .mono {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--signal-500);
  padding-top: 2px;
}

.page-about .flow h3 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--paper-50);
}

.page-about .flow p {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: rgba(244, 246, 249, .7);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  padding: 48px 0 64px;
}

.page-about .about-cta__inner {
  display: grid;
  gap: 22px;
}

.page-about .about-cta__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 4.4vw, 30px);
  line-height: 1.2;
  letter-spacing: -.015em;
  color: var(--ink-950);
}

.page-about .about-cta__text {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate-700);
}

.page-about .about-cta__contact {
  margin: 14px 0 0;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--brass-500);
  word-break: break-word;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-cta .btn--ghost {
  background: transparent;
  color: var(--ink-950);
  border: 1px solid rgba(43, 59, 82, .3);
}

.page-about .about-cta .btn--ghost:hover {
  border-color: var(--brass-500);
  color: var(--brass-500);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .wrap {
    padding: 0 32px;
  }

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

  .page-about .about-facts__item {
    padding: 20px 18px 24px;
  }

  .page-about .about-facts__item dd {
    font-size: 22px;
  }

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

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

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-top: 26px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: 1.12fr .88fr;
    align-items: center;
    gap: 56px;
    padding-top: 40px;
    padding-bottom: 56px;
  }

  .page-about .section {
    padding: 82px 0;
  }

  .page-about .section__head {
    margin-bottom: 36px;
  }

  .page-about .about-origin__grid {
    grid-template-columns: 1.25fr .75fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .miles::before {
    left: 116px;
    top: 16px;
    bottom: 16px;
  }

  .page-about .mile {
    display: grid;
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 40px;
    padding-left: 0;
    padding-bottom: 30px;
  }

  .page-about .mile::before {
    left: 110px;
    top: 12px;
  }

  .page-about .mile__year {
    font-size: 26px;
    text-align: right;
    margin-bottom: 0;
    padding-top: 4px;
  }

  .page-about .mile:nth-child(even) .mile__card {
    margin-left: 44px;
  }

  .page-about .mile__card {
    padding: 22px 24px 20px;
  }

  .page-about .about-team__inner {
    grid-template-columns: .82fr 1.18fr;
    gap: 52px;
    align-items: start;
  }

  .page-about .about-reach__grid {
    grid-template-columns: 1.45fr .55fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .about-partners__panel {
    grid-template-columns: 1.05fr .95fr;
    gap: 48px;
    padding: 44px 44px 40px;
  }

  .page-about .about-cta {
    padding: 72px 0 88px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .btn,
  .page-about .chip,
  .page-about .mile__card {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>
<<<END>>>