.page-about {
  --about-on-dark: rgba(245, 241, 232, 0.76);
  --about-on-dark-soft: rgba(245, 241, 232, 0.58);
  background: var(--cg-ink);
  color: var(--cg-ceramic);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 22px 0 clamp(44px, 7vw, 80px);
  background:
    radial-gradient(110% 70% at 8% 0%, rgba(200, 162, 74, 0.18), transparent 58%),
    radial-gradient(80% 60% at 96% 4%, rgba(111, 138, 138, 0.16), transparent 60%),
    linear-gradient(180deg, var(--cg-night) 0%, var(--cg-ink) 62%, #13233A 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cg-line-gold), transparent);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 40px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-about .about-hero__title {
  font-family: var(--cg-serif);
  font-weight: 900;
  font-size: clamp(29px, 6vw, 56px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin: 14px 0 0;
  max-width: 18em;
  color: var(--cg-ceramic);
}

.page-about .about-hero__lead {
  margin: 18px 0 0;
  max-width: 40em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
  color: var(--about-on-dark);
}

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

.page-about .about-hero__panel {
  border: 1px solid var(--cg-line-gold);
  border-radius: var(--cg-radius-lg);
  padding: clamp(18px, 3vw, 26px);
  background: linear-gradient(160deg, rgba(8, 17, 30, 0.9), rgba(15, 27, 45, 0.72));
  box-shadow: var(--cg-shadow-lift);
}

.page-about .about-hero__panel-title {
  margin: 0;
  font-family: var(--cg-serif);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.04em;
  color: var(--cg-gold-hi);
}

.page-about .about-stats {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--cg-line-soft);
  border-radius: var(--cg-radius-sm);
  overflow: hidden;
}

.page-about .about-stats li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 14px 12px;
  background: rgba(8, 17, 30, 0.94);
}

.page-about .about-stats__num {
  font-family: var(--cg-mono);
  font-size: clamp(22px, 3.4vw, 30px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cg-gold-hi);
}

.page-about .about-stats__label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--about-on-dark-soft);
}

.page-about .about-hero__panel-note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--about-on-dark-soft);
}

.page-about .about-banner {
  margin: clamp(26px, 5vw, 46px) 0 0;
  border-radius: var(--cg-radius-lg);
  overflow: hidden;
  border: 1px solid var(--cg-line-soft);
  background: var(--cg-night);
}

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

.page-about .about-banner figcaption {
  padding: 12px 16px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--about-on-dark-soft);
  border-top: 1px solid var(--cg-line-soft);
}

/* ---------- 纪年带 ---------- */
.page-about .about-chron {
  padding: clamp(20px, 4vw, 34px) 0;
  background: linear-gradient(180deg, #13233A, var(--cg-ink));
  border-bottom: 1px solid var(--cg-line-soft);
}

.page-about .about-chron__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 14px;
}

.page-about .about-chron__hint {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--about-on-dark-soft);
}

.page-about .about-chron__track {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  padding-bottom: 8px;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-chron__track::-webkit-scrollbar {
  height: 4px;
}

.page-about .about-chron__track::-webkit-scrollbar-thumb {
  background: var(--cg-line-gold);
  border-radius: 999px;
}

.page-about .about-chron__item {
  flex: 0 0 auto;
  min-width: 150px;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  border: 1px solid var(--cg-line-soft);
  border-radius: var(--cg-radius-md);
  background: rgba(8, 17, 30, 0.62);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.3s var(--cg-ease), background 0.3s var(--cg-ease), transform 0.3s var(--cg-ease);
}

.page-about .about-chron__item:hover,
.page-about .about-chron__item:focus-visible {
  border-color: var(--cg-gold);
  background: rgba(200, 162, 74, 0.12);
  transform: translateY(-3px);
}

.page-about .about-chron__year {
  font-family: var(--cg-mono);
  font-size: 20px;
  letter-spacing: 0.04em;
  color: var(--cg-gold-hi);
}

.page-about .about-chron__label {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--about-on-dark-soft);
}

/* ---------- 主体：索引 + 长卷 ---------- */
.page-about .about-body {
  padding: clamp(38px, 7vw, 80px) 0 clamp(48px, 8vw, 96px);
  background: linear-gradient(180deg, var(--cg-ink), #0B1728 42%, var(--cg-night));
}

.page-about .about-body__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-about .about-index {
  border-left: 1px solid var(--cg-line-soft);
  padding-left: 12px;
}

.page-about .about-index__label {
  margin: 0 0 10px;
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-index__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-index__link {
  display: block;
  white-space: nowrap;
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: var(--cg-radius-pill);
  font-size: 13px;
  color: var(--about-on-dark-soft);
  text-decoration: none;
  transition: color 0.25s var(--cg-ease), border-color 0.25s var(--cg-ease), background 0.25s var(--cg-ease);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--cg-gold-hi);
  border-color: var(--cg-line-gold);
  background: rgba(200, 162, 74, 0.1);
}

.page-about .about-sec {
  padding: clamp(26px, 4vw, 42px) 0;
  border-top: 1px solid var(--cg-line-soft);
}

.page-about .about-sec:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-sec__idx {
  margin: 0;
  font-family: var(--cg-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--cg-gold);
}

.page-about .about-sec__title {
  margin: 10px 0 0;
  font-family: var(--cg-serif);
  font-weight: 800;
  font-size: clamp(23px, 3.6vw, 34px);
  line-height: 1.3;
  color: var(--cg-ceramic);
}

.page-about .about-sec__text {
  margin: 14px 0 0;
  max-width: 44em;
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.9;
  color: var(--about-on-dark);
}

.page-about .about-sec__text--after {
  margin-top: 18px;
  font-size: 14px;
  color: var(--about-on-dark-soft);
}

/* 脉络要点 */
.page-about .about-points {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 22px;
}

.page-about .about-point {
  padding: 16px 18px;
  border-radius: var(--cg-radius-md);
  border-left: 3px solid var(--cg-gold);
  background: var(--cg-ceramic);
  box-shadow: var(--cg-shadow-card);
}

.page-about .about-point__k {
  display: block;
  font-family: var(--cg-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--cg-gold-deep);
}

.page-about .about-point__v {
  display: block;
  margin-top: 6px;
  font-size: 14.5px;
  line-height: 1.75;
  color: #2A3A4F;
}

/* 覆盖层级图 */
.page-about .about-layers {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 22px;
}

.page-about .about-layer {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 14px 16px;
  border: 1px solid var(--cg-line-soft);
  border-radius: var(--cg-radius-md);
  background: linear-gradient(120deg, rgba(200, 162, 74, 0.1), rgba(8, 17, 30, 0.55));
  transition: border-color 0.3s var(--cg-ease), transform 0.3s var(--cg-ease), background 0.3s var(--cg-ease);
}

.page-about .about-layer:hover,
.page-about .about-layer:focus-visible {
  border-color: var(--cg-gold);
  background: linear-gradient(120deg, rgba(200, 162, 74, 0.2), rgba(8, 17, 30, 0.6));
  transform: translateX(4px);
  outline: none;
}

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

.page-about .about-layer__body {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--about-on-dark);
}

/* 认证 */
.page-about .about-assure {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-top: 22px;
}

.page-about .about-checks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-checks li {
  position: relative;
  padding-left: 26px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-on-dark);
}

.page-about .about-checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 10px;
  height: 10px;
  border: 1px solid var(--cg-gold);
  border-radius: 3px;
  background: rgba(200, 162, 74, 0.24);
}

.page-about .about-evals {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 18px;
}

.page-about .about-eval {
  padding: 12px 8px;
  text-align: center;
  border: 1px solid var(--cg-line-soft);
  border-radius: var(--cg-radius-sm);
  background: rgba(8, 17, 30, 0.62);
}

.page-about .about-eval__k {
  display: block;
  font-size: 12px;
  color: var(--about-on-dark-soft);
}

.page-about .about-eval__v {
  display: block;
  margin-top: 6px;
  font-family: var(--cg-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--cg-gold-hi);
}

.page-about .about-figure {
  margin: 22px 0 0;
  border: 1px solid var(--cg-line-gold);
  border-radius: var(--cg-radius-lg);
  overflow: hidden;
  background: var(--cg-night);
}

.page-about .about-assure .about-figure {
  margin-top: 0;
}

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

.page-about .about-figure figcaption {
  padding: 11px 15px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--about-on-dark-soft);
  border-top: 1px solid var(--cg-line-soft);
}

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

/* 团队角色标签 */
.page-about .about-roles {
  position: relative;
  margin-top: 22px;
}

.page-about .about-roles__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-about .about-roles__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-radius: var(--cg-radius-pill);
}

.page-about .about-roles__tab {
  cursor: pointer;
  padding: 9px 16px;
  border: 1px solid var(--cg-line-soft);
  border-radius: var(--cg-radius-pill);
  background: rgba(8, 17, 30, 0.55);
  font-size: 13.5px;
  color: var(--about-on-dark-soft);
  transition: background 0.25s var(--cg-ease), color 0.25s var(--cg-ease), border-color 0.25s var(--cg-ease);
}

.page-about .about-roles__tab:hover {
  border-color: var(--cg-line-gold);
  color: var(--cg-gold-hi);
}

.page-about .about-roles__input:focus-visible ~ .about-roles__nav {
  box-shadow: 0 0 0 2px var(--cg-gold);
}

.page-about .about-roles__panels {
  margin-top: 16px;
}

.page-about .about-roles__panel {
  display: none;
  padding: clamp(16px, 3vw, 22px);
  border: 1px solid var(--cg-line-soft);
  border-radius: var(--cg-radius-md);
  background: linear-gradient(140deg, rgba(200, 162, 74, 0.1), rgba(8, 17, 30, 0.55));
}

.page-about .about-roles__title {
  margin: 0;
  font-family: var(--cg-serif);
  font-weight: 800;
  font-size: 18px;
  color: var(--cg-ceramic);
}

.page-about .about-roles__text {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-on-dark);
}

.page-about .about-roles__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .about-roles__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-on-dark-soft);
}

.page-about .about-roles__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 1px;
  background: var(--cg-gold);
}

.page-about #about-role-1:checked ~ .about-roles__nav label[for="about-role-1"],
.page-about #about-role-2:checked ~ .about-roles__nav label[for="about-role-2"],
.page-about #about-role-3:checked ~ .about-roles__nav label[for="about-role-3"],
.page-about #about-role-4:checked ~ .about-roles__nav label[for="about-role-4"] {
  background: var(--cg-gold);
  border-color: var(--cg-gold);
  color: var(--cg-night);
  font-weight: 700;
}

.page-about #about-role-1:checked ~ .about-roles__panels > .about-roles__panel:nth-child(1),
.page-about #about-role-2:checked ~ .about-roles__panels > .about-roles__panel:nth-child(2),
.page-about #about-role-3:checked ~ .about-roles__panels > .about-roles__panel:nth-child(3),
.page-about #about-role-4:checked ~ .about-roles__panels > .about-roles__panel:nth-child(4) {
  display: block;
}

/* 合作生态 */
.page-about .about-partners {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 22px;
}

.page-about .about-partner {
  padding: 18px;
  border: 1px solid var(--cg-line-soft);
  border-radius: var(--cg-radius-md);
  background: rgba(15, 27, 45, 0.58);
  transition: border-color 0.3s var(--cg-ease), background 0.3s var(--cg-ease);
}

.page-about .about-partner:hover {
  border-color: var(--cg-line-gold);
  background: rgba(20, 38, 60, 0.76);
}

.page-about .about-partner__title {
  margin: 0;
  font-family: var(--cg-serif);
  font-weight: 800;
  font-size: 17px;
  color: var(--cg-ceramic);
}

.page-about .about-partner__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-on-dark-soft);
}

/* 时间轴 */
.page-about .about-timeline {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--cg-gold), rgba(200, 162, 74, 0.06));
}

.page-about .about-timeline li {
  position: relative;
  padding: 0 0 24px 34px;
  scroll-margin-top: 90px;
}

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

.page-about .about-timeline li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 6px;
  width: 11px;
  height: 11px;
  border: 1px solid var(--cg-gold);
  border-radius: 50%;
  background: var(--cg-ink);
  box-shadow: 0 0 0 4px rgba(200, 162, 74, 0.12);
}

.page-about .about-timeline__year {
  font-family: var(--cg-mono);
  font-size: 14.5px;
  letter-spacing: 0.08em;
  color: var(--cg-gold-hi);
}

.page-about .about-timeline__title {
  display: block;
  margin-top: 5px;
  font-family: var(--cg-serif);
  font-weight: 800;
  font-size: 16.5px;
  line-height: 1.5;
  color: var(--cg-ceramic);
}

.page-about .about-timeline__text {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-on-dark-soft);
}

/* 行动区 */
.page-about .about-cta {
  margin-top: clamp(28px, 5vw, 48px);
  padding: clamp(22px, 4vw, 40px);
  border: 1px solid var(--cg-line-gold);
  border-radius: var(--cg-radius-lg);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(200, 162, 74, 0.26), transparent 55%),
    linear-gradient(150deg, #14263C, var(--cg-night));
  box-shadow: var(--cg-shadow-lift);
  scroll-margin-top: 90px;
}

.page-about .about-cta__title {
  margin: 0;
  font-family: var(--cg-serif);
  font-weight: 900;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.35;
  color: var(--cg-ceramic);
}

.page-about .about-cta__text {
  margin: 12px 0 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-on-dark);
}

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

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 20px 0 0;
  font-size: 13.5px;
}

.page-about .about-cta__links a {
  color: var(--cg-gold-hi);
  text-decoration: none;
  border-bottom: 1px solid var(--cg-line-gold);
  padding-bottom: 2px;
}

.page-about .about-cta__links a:hover,
.page-about .about-cta__links a:focus-visible {
  color: var(--cg-ceramic);
  border-bottom-color: var(--cg-ceramic);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .about-points {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .about-layer {
    grid-template-columns: 108px minmax(0, 1fr);
    align-items: center;
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
    align-items: end;
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .about-assure {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: 28px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-body__grid {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 68px);
  }

  .page-about .about-index {
    position: sticky;
    top: 92px;
  }

  .page-about .about-index__list {
    display: block;
    overflow: visible;
  }

  .page-about .about-index__list li + li {
    margin-top: 4px;
  }

  .page-about .about-index__link {
    white-space: normal;
    border-radius: var(--cg-radius-xs);
    padding: 9px 12px;
    font-size: 13.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-chron__item,
  .page-about .about-layer,
  .page-about .about-partner,
  .page-about .about-roles__tab {
    transition: none;
  }

  .page-about .about-chron__item:hover,
  .page-about .about-layer:hover {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>
<<<END>>>