.page-about {
  --about-rule: rgba(47, 182, 196, 0.42);
  --about-rule-solid: rgba(240, 217, 174, 0.32);
  --about-tint: rgba(47, 182, 196, 0.08);
  --about-grid-line: rgba(10, 31, 43, 0.09);
}

.page-about .section {
  padding: 60px 0;
}

@media (min-width: 900px) {
  .page-about .section {
    padding: 96px 0;
  }
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  padding: 22px 0 6px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-bottom: 0;
}

.page-about .about-hero__inner {
  padding-top: 18px;
  padding-bottom: 36px;
}

.page-about .about-hero__tag {
  display: inline-block;
  margin: 0 0 18px;
}

.page-about .about-hero__title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 8.4vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.012em;
  color: var(--ink-900);
  max-width: 17em;
}

.page-about .about-hero__lead {
  max-width: 34em;
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--slate-500);
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 34px 0 0;
  padding: 0;
  background: var(--about-grid-line);
  border: 2px solid var(--ink-900);
}

@media (min-width: 760px) {
  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-facts__cell {
  background: var(--paper-50);
  padding: 18px 16px 20px;
  margin: 0;
}

.page-about .about-facts__key {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--slate-500);
}

.page-about .about-facts__val {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
  color: var(--ink-900);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
}

.page-about .about-facts__val .unit {
  font-size: 12px;
  font-weight: 500;
}

.page-about .about-hero__figure {
  margin: 0;
  position: relative;
  background: var(--ink-900);
  overflow: hidden;
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1920 / 900;
  object-fit: cover;
}

.page-about .about-hero__caption {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 20px 18px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(233, 239, 241, 0.72);
}

/* ---------- 快捷入口条 ---------- */
.page-about .about-quick {
  position: sticky;
  top: 0;
  z-index: 20;
  margin-top: 0;
  background: var(--mist-100);
  border-top: 2px solid var(--ink-900);
  border-bottom: 2px solid var(--ink-900);
}

.page-about .about-quick__inner {
  display: flex;
  align-items: stretch;
  gap: 0;
  padding-top: 0;
  padding-bottom: 0;
}

.page-about .about-quick__tag {
  display: none;
  align-items: center;
  padding-right: 20px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--slate-500);
  white-space: nowrap;
}

@media (min-width: 900px) {
  .page-about .about-quick__tag {
    display: flex;
  }
}

.page-about .about-quick__list {
  display: flex;
  flex: 1 1 auto;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-about .about-quick__link {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 50px;
  padding: 0 18px;
  white-space: nowrap;
  text-decoration: none;
  font-size: 14px;
  color: var(--ink-900);
  border-left: 1px solid rgba(10, 31, 43, 0.14);
  transition: background-color 160ms linear, color 160ms linear;
}

.page-about .about-quick__link .mono {
  font-size: 12px;
  color: var(--copper-500);
}

.page-about .about-quick__link:hover,
.page-about .about-quick__link:focus-visible {
  background: var(--gold-200);
  color: var(--ink-900);
  outline: none;
}

/* ---------- 通用小节标题 ---------- */
.page-about .about-head {
  max-width: 40em;
  margin-bottom: 34px;
}

.page-about .about-head--center {
  max-width: 46em;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.page-about .about-head__title {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 5.4vw, 40px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-about .section--dark .about-head__title {
  color: var(--paper-50);
}

.page-about .about-head__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate-500);
}

.page-about .section--dark .about-head__text {
  color: rgba(233, 239, 241, 0.72);
}

/* ---------- 我们做什么 ---------- */
.page-about .about-what__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
}

@media (min-width: 980px) {
  .page-about .about-what__grid {
    grid-template-columns: 5fr 4fr;
    gap: 56px;
    align-items: start;
  }
}

.page-about .about-what__title {
  margin: 12px 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 5.4vw, 40px);
  line-height: 1.16;
  color: var(--ink-900);
}

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

.page-about .about-what__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--ink-900);
}

.page-about .about-what__row {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(10, 31, 43, 0.16);
}

.page-about .about-what__row-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--copper-500);
  padding-top: 3px;
}

.page-about .about-what__row-title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-900);
}

.page-about .about-what__row-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate-500);
}

/* ---------- 发展历程 ---------- */
.page-about .about-history {
  background: var(--ink-900);
}

.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 4px;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 5px;
  width: 0;
  border-left: 2px dashed var(--about-rule);
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 34px 30px;
}

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

.page-about .about-timeline__scale {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.page-about .about-timeline__dot {
  position: absolute;
  left: -3px;
  top: 6px;
  width: 14px;
  height: 14px;
  background: var(--ink-900);
  border: 3px solid var(--copper-500);
  box-shadow: 0 0 0 3px rgba(201, 138, 52, 0.18);
}

.page-about .about-timeline__years {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--gold-200);
}

.page-about .about-timeline__title {
  margin: 0 0 10px;
  font-size: clamp(19px, 3.6vw, 26px);
  font-weight: 900;
  line-height: 1.25;
  color: var(--paper-50);
}

.page-about .about-timeline__text {
  margin: 0;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(233, 239, 241, 0.72);
}

.page-about .about-timeline__acc {
  margin-top: 14px;
  border: 1px solid var(--about-rule-solid);
  background: rgba(18, 52, 68, 0.62);
}

.page-about .about-timeline__acc .accordion__item {
  margin: 0;
  border: 0;
  background: transparent;
}

.page-about .about-timeline__acc .accordion__trigger {
  display: block;
  width: 100%;
  min-height: 46px;
  padding: 12px 16px;
  text-align: left;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan-400);
  background: transparent;
  border: 0;
  cursor: pointer;
}

.page-about .about-timeline__acc .accordion__trigger::after {
  content: " +";
}

.page-about .about-timeline__acc .accordion__trigger[aria-expanded="true"]::after {
  content: " −";
}

.page-about .about-timeline__acc .accordion__trigger:hover,
.page-about .about-timeline__acc .accordion__trigger:focus-visible {
  background: rgba(47, 182, 196, 0.12);
  outline: none;
}

.page-about .about-timeline__acc .accordion__panel {
  padding: 2px 16px 16px;
}

.page-about .about-timeline__acc .accordion__panel p {
  margin: 0;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(233, 239, 241, 0.8);
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

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

@media (min-width: 1060px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-team__card {
  background: var(--paper-50);
  border: 2px solid var(--ink-900);
  box-shadow: var(--hard-sm);
  padding: 22px 20px 24px;
  transition: transform 200ms linear, box-shadow 200ms linear, border-color 200ms linear;
}

.page-about .about-team__card:hover {
  transform: translate(-2px, -2px);
  border-color: var(--copper-500);
  box-shadow: 6px 6px 0 rgba(8, 21, 26, 0.22);
}

.page-about .about-team__num {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--copper-500);
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

.page-about .about-team__title {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink-900);
}

.page-about .about-team__count {
  margin: 0 0 12px;
  display: flex;
  align-items: baseline;
  gap: 4px;
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--teal-600);
}

.page-about .about-team__count .unit {
  font-size: 12px;
  font-weight: 500;
  color: var(--slate-500);
}

.page-about .about-team__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate-500);
}

.page-about .about-team__figure {
  margin: 34px 0 0;
  border: 2px solid var(--ink-900);
  box-shadow: var(--hard);
  background: var(--ink-900);
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-about .about-team__caption {
  padding: 12px 16px 14px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(233, 239, 241, 0.72);
}

/* ---------- 地州覆盖 ---------- */
.page-about .about-coverage__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
}

@media (min-width: 980px) {
  .page-about .about-coverage__grid {
    grid-template-columns: 5fr 4fr;
    gap: 52px;
    align-items: start;
  }
}

.page-about .about-coverage__title {
  margin: 12px 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 5.4vw, 40px);
  line-height: 1.16;
  color: var(--ink-900);
}

.page-about .about-region {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(112px, 1fr));
  gap: 2px;
  margin: 30px 0 0;
  padding: 2px;
  list-style: none;
  background: rgba(10, 31, 43, 0.14);
  border: 2px solid var(--ink-900);
}

.page-about .about-region__item {
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
  padding: 12px 10px;
  background: var(--mist-100);
}

.page-about .about-region__no {
  font-size: 11px;
  font-weight: 700;
  color: var(--copper-500);
}

.page-about .about-region__name {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-900);
}

.page-about .about-region__state {
  width: 100%;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--camellia-600);
}

.page-about .about-coverage__figure {
  margin: 0;
  border: 2px solid var(--ink-900);
  box-shadow: var(--hard);
  background: var(--ink-900);
}

.page-about .about-coverage__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-about .about-coverage__caption {
  padding: 12px 16px 14px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(233, 239, 241, 0.72);
}

/* ---------- 更新节奏 ---------- */
.page-about .about-rhythm__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 2px solid var(--ink-900);
}

@media (min-width: 700px) {
  .page-about .about-rhythm__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }
}

@media (min-width: 1080px) {
  .page-about .about-rhythm__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    column-gap: 32px;
  }
}

.page-about .about-rhythm__card {
  padding: 24px 0 26px;
  border-bottom: 1px solid rgba(10, 31, 43, 0.16);
}

.page-about .about-rhythm__freq {
  display: inline-block;
  margin: 0 0 14px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink-900);
  background: var(--gold-200);
  border: 1px solid rgba(10, 31, 43, 0.2);
}

.page-about .about-rhythm__title {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--ink-900);
}

.page-about .about-rhythm__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate-500);
}

.page-about .about-rhythm__foot {
  margin: 30px 0 0;
  padding: 18px 20px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-text);
  background: var(--tint, var(--mist-100));
  border-left: 4px solid var(--cyan-400);
}

.page-about .about-rhythm__link {
  color: var(--teal-600);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-rhythm__link:hover,
.page-about .about-rhythm__link:focus-visible {
  color: var(--copper-500);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 780px) {
  .page-about .about-partners__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-partners__card {
  border-top: 4px solid var(--teal-600);
  padding: 22px 20px 20px;
}

.page-about .about-partners__text {
  margin: 10px 0 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate-500);
}

.page-about .about-partners__cta {
  margin-top: 30px;
}

/* ---------- 主张与承诺 ---------- */
.page-about .about-promise {
  background: var(--ink-900);
}

.page-about .about-path {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--about-rule-solid);
}

@media (min-width: 760px) {
  .page-about .about-path {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1060px) {
  .page-about .about-path {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-path__step {
  padding: 26px 20px 28px;
  border-bottom: 1px solid var(--about-rule-solid);
  border-left: 1px solid var(--about-rule-solid);
  background: rgba(18, 52, 68, 0.35);
}

.page-about .about-path__num {
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--copper-500);
  margin-bottom: 16px;
}

.page-about .about-path__title {
  margin: 0 0 10px;
  font-size: 30px;
  font-weight: 900;
  line-height: 1.1;
  color: var(--gold-200);
}

.page-about .about-path__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(233, 239, 241, 0.74);
}

.page-about .about-promise__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

@media (max-width: 640px) {
  .page-about .about-promise__cta .btn {
    width: 100%;
  }
}
<<<END>>>

.page-about {
  --tint: transparent;
}