.page-about {
  --about-grid: rgba(53, 224, 210, 0.16);
  --about-paper-line: rgba(33, 23, 17, 0.18);
  --about-star: rgba(233, 238, 247, 0.5);
  background:
    radial-gradient(circle at 16% -4%, rgba(30, 91, 99, 0.34), transparent 52%),
    radial-gradient(circle at 88% 8%, rgba(111, 101, 135, 0.24), transparent 46%),
    var(--ink);
  color: var(--mist);
  overflow-x: hidden;
}

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

.page-about a {
  color: var(--cyan);
  text-decoration: none;
}

.page-about a:hover,
.page-about a:focus-visible {
  color: var(--orange);
}

.page-about .page-about__crumbs {
  padding-top: clamp(14px, 3vw, 26px);
}

.page-about .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 14px;
}

.page-about .section-title {
  font-family: var(--font-display);
  font-size: clamp(24px, 5.2vw, 40px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin: 0 0 18px;
  color: var(--mist);
}

.page-about .lead {
  font-size: clamp(15px, 2.4vw, 18px);
  line-height: 1.75;
  color: var(--mist-70);
  margin: 0 0 22px;
  max-width: 44ch;
}

.page-about .prose {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist-70);
  margin: 0 0 16px;
  max-width: 46ch;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(18px, 4vw, 42px) 0 clamp(36px, 6vw, 76px);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(233, 238, 247, 0.28) 0.7px, transparent 0.8px);
  background-size: 46px 46px;
  opacity: 0.28;
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 5vw, 52px);
  align-items: start;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 8vw, 62px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  color: var(--mist);
}

.page-about .about-hero h1::after {
  content: "";
  display: block;
  width: 64px;
  height: 3px;
  margin-top: 20px;
  background: linear-gradient(90deg, var(--orange), var(--cyan));
}

.page-about .about-hero__figure {
  margin: 0;
  position: relative;
  background: var(--orbit);
  border: 1px solid var(--line-cyan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-about .about-hero__figure img {
  width: 100%;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.04);
}

.page-about .about-hero__caption {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist-50);
  padding: 12px 16px 16px;
  border-top: 1px solid var(--line-cyan-soft);
}

.page-about .hero-index {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-top: 1px solid var(--line-cyan-soft);
}

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

.page-about .hero-index__link {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 11px 2px;
  font-size: 14.5px;
  color: var(--mist);
  transition: color 0.2s var(--ease), padding-left 0.24s var(--ease);
}

.page-about .hero-index__link:hover,
.page-about .hero-index__link:focus-visible {
  color: var(--cyan);
  padding-left: 8px;
}

.page-about .hero-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--orange);
  letter-spacing: 0.08em;
}

/* ---------- 起点 ---------- */
.page-about .about-story {
  padding-top: clamp(34px, 6vw, 74px);
  border-top: 1px solid var(--line-cyan-soft);
}

.page-about .about-story__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .about-story__facts {
  background: var(--orbit);
  border: 1px solid var(--line-cyan);
  padding: clamp(20px, 4vw, 30px);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.page-about .about-story__facts-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--cyan);
  margin: 0 0 16px;
}

.page-about .fact-list {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-about .fact-list__row {
  display: grid;
  grid-template-columns: 5.6em 1fr;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(233, 238, 247, 0.16);
}

.page-about .fact-list__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .fact-list dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--mist-50);
}

.page-about .fact-list dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist);
}

.page-about .about-story__facts-note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist-50);
}

/* ---------- 服务覆盖（奶油纸质页） ---------- */
.page-about .about-coverage {
  padding-top: clamp(38px, 6vw, 78px);
}

.page-about .about-coverage__inner {
  padding: 0;
}

.page-about .about-coverage__sheet {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.35), transparent 40%),
    var(--cream);
  color: var(--letterpress);
  padding: clamp(24px, 5vw, 52px);
  box-shadow: var(--shadow-paper);
  border-top: 3px solid var(--letterpress);
  position: relative;
}

.page-about .about-coverage__sheet::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid var(--about-paper-line);
  pointer-events: none;
}

.page-about .about-coverage__eyebrow {
  color: var(--orange-ink);
}

.page-about .about-coverage__title {
  color: var(--letterpress);
}

.page-about .about-coverage__lead {
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(33, 23, 17, 0.78);
  margin: 0 0 26px;
  max-width: 52ch;
}

.page-about .coverage-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-paper-line);
  border: 1px solid var(--about-paper-line);
  margin-bottom: clamp(24px, 4vw, 36px);
}

.page-about .coverage-stats .stat {
  background: rgba(241, 230, 207, 0.9);
  padding: 16px 14px;
  display: grid;
  gap: 4px;
}

.page-about .coverage-stats .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(22px, 4.6vw, 32px);
  font-weight: 700;
  color: var(--letterpress);
  letter-spacing: -0.02em;
}

.page-about .coverage-stats .stat__label {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(33, 23, 17, 0.66);
}

.page-about .about-coverage__body {
  display: grid;
  gap: clamp(22px, 4vw, 36px);
}

.page-about .about-coverage__figure {
  margin: 0;
  background: rgba(33, 23, 17, 0.05);
  border: 1px solid var(--about-paper-line);
  padding: 8px;
}

.page-about .about-coverage__figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

.page-about .about-coverage__caption {
  color: rgba(33, 23, 17, 0.62);
  border-top: 1px dashed var(--about-paper-line);
  padding: 8px 4px 4px;
}

.page-about .coverage-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.page-about .filter-btn {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  padding: 8px 12px;
  border: 1px solid rgba(33, 23, 17, 0.3);
  background: transparent;
  color: var(--letterpress);
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .filter-btn:hover,
.page-about .filter-btn:focus-visible {
  border-color: var(--orange-ink);
  color: var(--orange-ink);
}

.page-about .filter-btn[aria-pressed="true"] {
  background: var(--letterpress);
  border-color: var(--letterpress);
  color: var(--cream);
}

.page-about .coverage-scenario-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .scenario {
  border-left: 3px solid var(--orange-ink);
  padding: 4px 0 4px 16px;
}

.page-about .scenario__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--orange-ink);
  margin: 0 0 6px;
}

.page-about .scenario__title {
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.3;
  margin: 0 0 8px;
  color: var(--letterpress);
}

.page-about .scenario__text {
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(33, 23, 17, 0.78);
  margin: 0 0 8px;
}

.page-about .scenario__link {
  margin: 0;
  font-size: 13px;
}

.page-about .scenario__link a {
  color: var(--orange-ink);
  border-bottom: 1px solid currentColor;
}

.page-about .is-hidden {
  display: none !important;
}

/* ---------- 内容运营 ---------- */
.page-about .about-ops {
  padding-top: clamp(38px, 6vw, 78px);
}

.page-about .about-ops__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-about .ops-beats {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-cyan-soft);
  border: 1px solid var(--line-cyan-soft);
}

.page-about .ops-beat {
  background: rgba(16, 28, 56, 0.92);
  padding: 14px 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
}

.page-about .ops-beat__num {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--cyan);
  min-width: 5.5em;
}

.page-about .ops-beat__text {
  font-size: 13.5px;
  color: var(--mist-70);
}

.page-about .about-ops__link {
  margin: 20px 0 0;
  font-size: 14px;
}

.page-about .about-ops__figure {
  margin: 0;
  border: 1px solid var(--line-cyan);
  background: var(--orbit);
  padding: 8px;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%, 0 0);
}

.page-about .about-ops__figure img {
  width: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-about .about-ops__caption {
  color: var(--mist-50);
  border-top: 1px dashed var(--line-cyan-soft);
  padding: 8px 4px 4px;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline-section {
  padding-top: clamp(38px, 6vw, 78px);
  border-top: 1px solid var(--line-cyan-soft);
}

.page-about .about-timeline-section__lead {
  max-width: 40ch;
}

.page-about .about-timeline {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0 0 0 26px;
  position: relative;
  display: grid;
  gap: clamp(20px, 3.4vw, 32px);
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--orange), var(--cyan) 55%, var(--violet));
}

.page-about .about-timeline .timeline__item {
  position: relative;
}

.page-about .about-timeline .timeline__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 9px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(7, 11, 24, 0.9);
}

.page-about .about-timeline__year {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--orange);
  margin: 0 0 8px;
}

.page-about .about-timeline__title {
  font-family: var(--font-display);
  font-size: clamp(19px, 3.4vw, 24px);
  line-height: 1.28;
  margin: 0 0 8px;
  color: var(--mist);
}

.page-about .about-timeline__sum {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist-70);
  margin: 0 0 10px;
  max-width: 52ch;
}

.page-about .about-timeline__panel--static {
  border-left: 2px solid var(--violet);
  padding-left: 14px;
}

/* ---------- 披露组件 ---------- */
.page-about .disclosure {
  border: 1px solid var(--line-cyan-soft);
  background: rgba(16, 28, 56, 0.6);
  padding: 16px 18px;
}

.page-about .disclosure__button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  background: transparent;
  border: 1px solid var(--line-cyan);
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .disclosure__button:hover,
.page-about .disclosure__button:focus-visible {
  background: rgba(53, 224, 210, 0.1);
}

.page-about .disclosure__icon {
  font-size: 14px;
  line-height: 1;
  transition: transform 0.22s var(--ease);
}

.page-about .disclosure.is-open .disclosure__icon,
.page-about .disclosure__button[aria-expanded="true"] .disclosure__icon {
  transform: rotate(45deg);
}

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

.page-about .disclosure__panel p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist-70);
  max-width: 52ch;
}

/* ---------- 认证与协作 ---------- */
.page-about .section--violet.about-trust {
  background: linear-gradient(160deg, rgba(111, 101, 135, 0.26), rgba(16, 28, 56, 0.9));
  border-top: 1px solid rgba(233, 238, 247, 0.12);
  border-bottom: 1px solid rgba(233, 238, 247, 0.12);
}

.page-about .about-trust__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-about .about-trust__link {
  margin: 22px 0 0;
  font-size: 14px;
}

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

.page-about .cert-card {
  background: rgba(7, 11, 24, 0.66);
  border: 1px solid var(--line-cyan);
  padding: 20px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-about .cert-card--cyan {
  border-color: rgba(53, 224, 210, 0.42);
}

.page-about .cert-card__badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  padding: 4px 9px;
  color: var(--ink);
  background: var(--orange);
  margin-bottom: 12px;
}

.page-about .cert-card__title {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--mist-50);
  margin: 0 0 6px;
}

.page-about .cert-card__text {
  font-size: 15px;
  line-height: 1.6;
  margin: 0 0 8px;
  color: var(--mist);
  word-break: break-word;
}

.page-about .cert-card__foot {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist-50);
  margin: 0;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding-top: clamp(38px, 6vw, 78px);
}

.page-about .about-team__lead {
  max-width: 42ch;
}

.page-about .team-index {
  display: grid;
  gap: 12px;
  margin-top: clamp(22px, 4vw, 34px);
}

.page-about .team-index__item {
  position: relative;
  padding-left: 18px;
}

.page-about .team-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--orange);
  margin: 0 0 6px;
}

.page-about .team-index__name {
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.3;
  margin: 0 0 6px;
  color: var(--mist);
}

.page-about .team-index__brief {
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist-70);
  margin: 0 0 8px;
  max-width: 48ch;
}

.page-about .about-team__cta {
  margin-top: clamp(28px, 4vw, 44px);
  border-top: 1px solid var(--line-cyan-soft);
  padding-top: 24px;
  display: grid;
  gap: 16px;
}

.page-about .about-team__cta-text {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist-70);
  margin: 0;
  max-width: 46ch;
}

.page-about .about-team__cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-team__cta-actions .btn {
  display: inline-block;
  padding: 11px 18px;
  font-size: 14px;
  letter-spacing: 0.02em;
}

@media (min-width: 720px) {
  .page-about .coverage-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-story__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  }

  .page-about .about-trust__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  }

  .page-about .team-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

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

@media (min-width: 980px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .about-hero__figure {
    margin-top: 12px;
  }

  .page-about .hero-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 28px;
  }

  .page-about .about-coverage__body {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
  }

  .page-about .about-ops__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(32px, 5vw, 60px);
  }

  .page-about .about-ops__figure {
    margin-top: 26px;
  }

  .page-about .about-timeline {
    padding-left: 40px;
  }

  .page-about .about-timeline .timeline__item::before {
    left: -40px;
    width: 14px;
    height: 14px;
  }
}

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