.page-about {
  background: var(--cream);
  color: var(--rock);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .about-context {
  border-bottom: 1px solid var(--line);
  background: var(--cream);
}

.page-about .about-context__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 20px;
  padding-block: 12px;
}

.page-about .about-context__note {
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--snow-700);
  text-transform: uppercase;
}

/* ---------- 首屏框景 ---------- */
.page-about .about-hero {
  position: relative;
  background: linear-gradient(160deg, var(--snow-100) 0%, #dfeaeb 58%, var(--snow-100) 100%);
  padding: clamp(34px, 6vw, 64px) 0 clamp(40px, 7vw, 80px);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 14px clamp(8px, 3vw, 28px) 14px;
  border: 1px solid var(--snow-300);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: clamp(8px, 3vw, 28px);
  right: clamp(8px, 3vw, 28px);
  top: 14px;
  height: 6px;
  background: repeating-linear-gradient(90deg, var(--snow-300) 0 1px, transparent 1px 14px);
  opacity: 0.8;
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 5vw, 44px);
  padding-inline: clamp(18px, 5vw, 44px);
}

.page-about .about-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6vw, 58px);
  line-height: 1.06;
  letter-spacing: 0.03em;
  color: var(--rock-deep);
}

.page-about .about-hero__lead {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: var(--fs-17);
  line-height: 1.75;
  color: var(--rock);
}

.page-about .about-hero__text {
  margin: 12px 0 0;
  max-width: 34em;
  font-size: var(--fs-15);
  line-height: 1.75;
  color: #3f4a4d;
}

.page-about .about-hero__index {
  border-top: 2px solid var(--orange);
  padding-top: 14px;
}

.page-about .about-hero__index-title {
  margin: 0 0 14px;
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--snow-700);
}

.page-about .idx-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .idx-item {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-family: var(--font-mono);
}

.page-about .idx-num {
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--snow-700);
  line-height: 1;
}

.page-about .idx-label {
  font-size: var(--fs-13);
  letter-spacing: 0.1em;
  color: var(--rock);
}

@media (min-width: 880px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }

  .page-about .about-hero__index {
    border-top: 0;
    border-left: 2px solid var(--orange);
    padding-top: 0;
    padding-left: 18px;
    justify-self: end;
  }

  .page-about .idx-list {
    flex-wrap: nowrap;
    gap: clamp(14px, 2vw, 26px);
  }

  .page-about .idx-item {
    writing-mode: vertical-rl;
    align-items: center;
    gap: 10px;
  }

  .page-about .idx-num {
    font-size: var(--fs-38);
    text-orientation: upright;
  }

  .page-about .idx-label {
    letter-spacing: 0.2em;
    padding-top: 4px;
  }
}

/* ---------- 通用区块 ---------- */
.page-about .about-block {
  padding-block: clamp(44px, 7vw, 88px);
}

.page-about .about-block h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.4vw, 36px);
  line-height: 1.24;
  letter-spacing: 0.02em;
  color: var(--rock-deep);
}

.page-about .about-block p {
  font-size: var(--fs-15);
  line-height: 1.8;
}

/* ---------- 我们在做什么 ---------- */
.page-about .about-what {
  background: var(--cream);
}

.page-about .about-what__body {
  margin-top: 26px;
  padding-left: 18px;
  border-left: 1px solid var(--sand-600);
}

.page-about .about-what__body p {
  margin: 0 0 16px;
  max-width: 40em;
  color: #3a4346;
}

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

@media (min-width: 900px) {
  .page-about .about-what__inner {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: clamp(16px, 3vw, 36px);
    align-items: start;
  }

  .page-about .about-what__head {
    grid-column: 1 / span 5;
  }

  .page-about .about-what__body {
    grid-column: 7 / span 6;
    margin-top: 4px;
  }
}

/* ---------- 服务地区 ---------- */
.page-about .about-region {
  position: relative;
  background: #f0e8d9;
  border-block: 1px solid var(--line);
}

.page-about .about-region::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 34%;
  height: 1px;
  background: var(--clay);
}

.page-about .about-region__inner {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
}

.page-about .about-region__text > p {
  margin: 14px 0 0;
  max-width: 38em;
  color: #3a4346;
}

.page-about .cap-list {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-about .cap-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 16px;
  background: var(--cream);
  border: 1px solid var(--line);
  border-left: 3px solid var(--sand-600);
}

.page-about .cap-num {
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.12em;
  color: var(--clay);
  padding-top: 3px;
}

.page-about .cap-item h3 {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-17);
  letter-spacing: 0.02em;
  color: var(--snow-700);
}

.page-about .cap-item p {
  margin: 0;
  font-size: var(--fs-15);
  line-height: 1.7;
  color: #3f4a4d;
}

.page-about .about-region__figure {
  margin: 0;
  background: var(--snow-100);
}

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

@media (min-width: 900px) {
  .page-about .about-region__inner {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: clamp(18px, 3vw, 40px);
  }

  .page-about .about-region__text {
    grid-column: 1 / span 6;
  }

  .page-about .about-region__figure {
    grid-column: 8 / span 5;
    margin-top: 8px;
  }
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background: var(--cream);
}

.page-about .about-team__intro {
  margin: 14px 0 0;
  max-width: 40em;
  color: #3a4346;
}

.page-about .team-grid {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-about .team-card {
  position: relative;
  padding: 20px 18px 22px;
  background: var(--cream);
  border: 1px solid var(--line);
  box-shadow: 0 1px 0 rgba(43, 49, 52, 0.04);
  transition: transform 220ms var(--ease), border-color 220ms var(--ease);
}

.page-about .team-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 44px;
  height: 3px;
  background: var(--moss);
}

.page-about .team-card:nth-child(even)::after {
  background: var(--clay);
}

.page-about .team-card:hover {
  transform: translateY(-2px);
  border-color: var(--sand-600);
}

.page-about .team-card__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.14em;
  color: var(--snow-700);
}

.page-about .team-card h3 {
  margin: 6px 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-21);
  letter-spacing: 0.02em;
  color: var(--rock-deep);
}

.page-about .team-card p {
  margin: 0;
  font-size: var(--fs-15);
  line-height: 1.7;
  color: #3f4a4d;
}

.page-about .about-team__figure {
  margin: 26px 0 0;
  background: var(--snow-100);
}

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

.page-about .about-team__note {
  margin: 22px 0 0;
  padding: 16px 18px;
  border-left: 3px solid var(--orange);
  background: #efeae1;
  font-size: var(--fs-15);
  line-height: 1.8;
  color: #3a4346;
}

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

@media (min-width: 1000px) {
  .page-about .team-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .team-card:nth-child(2) {
    transform: translateY(18px);
  }

  .page-about .team-card:nth-child(4) {
    transform: translateY(18px);
  }

  .page-about .team-card:nth-child(2):hover,
  .page-about .team-card:nth-child(4):hover {
    transform: translateY(16px);
  }
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  position: relative;
  background: linear-gradient(180deg, var(--snow-100) 0%, #eef3f3 100%);
  border-block: 1px solid var(--line);
  overflow: hidden;
}

.page-about .about-timeline__texture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
  pointer-events: none;
}

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

.page-about .about-timeline__head h2 {
  max-width: 22em;
}

.page-about .tl {
  position: relative;
  margin: 34px 0 0;
  padding: 0 0 0 22px;
  list-style: none;
  display: grid;
  gap: 22px;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: var(--snow-300);
}

.page-about .tl-item {
  position: relative;
  padding: 16px 16px 18px;
  background: rgba(247, 244, 238, 0.86);
  border: 1px solid var(--line);
  transition: border-color 220ms var(--ease), background-color 220ms var(--ease);
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 22px;
  width: 11px;
  height: 11px;
  background: var(--sand-600);
  border: 1px solid var(--cream);
  box-shadow: 0 0 0 1px var(--sand-600);
}

.page-about .tl-item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(-12deg, rgba(216, 195, 163, 0.35) 0%, transparent 46%);
  opacity: 0;
  transition: opacity 260ms var(--ease);
  pointer-events: none;
}

.page-about .tl-item:hover,
.page-about .tl-item:focus-within {
  border-color: var(--sand-600);
  background: var(--cream);
}

.page-about .tl-item:hover::after,
.page-about .tl-item:focus-within::after {
  opacity: 1;
}

.page-about .tl-num {
  position: relative;
  z-index: 1;
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--cream);
  background: var(--snow-700);
  padding: 3px 7px;
}

.page-about .tl-title {
  position: relative;
  z-index: 1;
  margin: 10px 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-17);
  letter-spacing: 0.02em;
  color: var(--rock-deep);
}

.page-about .tl-q,
.page-about .tl-a {
  position: relative;
  z-index: 1;
  margin: 0 0 6px;
  font-size: var(--fs-13);
  line-height: 1.7;
}

.page-about .tl-q {
  color: var(--orange-deep);
}

.page-about .tl-a {
  margin-bottom: 0;
  color: #3f4a4d;
}

@media (min-width: 900px) {
  .page-about .tl {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(16px, 2vw, 28px);
    padding-left: 0;
    margin-top: 46px;
  }

  .page-about .tl::before {
    left: 0;
    right: 0;
    top: 34px;
    bottom: auto;
    width: auto;
    height: 1px;
  }

  .page-about .tl-item {
    padding: 26px 18px 20px;
    margin-top: 46px;
  }

  .page-about .tl-item:nth-child(even) {
    margin-top: 0;
  }

  .page-about .tl-item::before {
    left: 18px;
    top: -39px;
    width: 13px;
    height: 13px;
    background: var(--orange);
    box-shadow: 0 0 0 1px var(--orange);
  }

  .page-about .tl-item:nth-child(even)::before {
    top: auto;
    bottom: -39px;
    background: var(--sand-600);
    box-shadow: 0 0 0 1px var(--sand-600);
  }
}

/* ---------- 版本对照 ---------- */
.page-about .about-version {
  position: relative;
  background: var(--snow-700);
  color: var(--cream);
}

.page-about .about-version::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: repeating-linear-gradient(90deg, rgba(247, 244, 238, 0.34) 0 1px, transparent 1px 16px);
}

.page-about .about-version h2 {
  color: var(--cream);
}

.page-about .about-version__eyebrow {
  color: var(--sand-300);
}

.page-about .about-version__intro {
  margin: 14px 0 0;
  max-width: 42em;
  color: rgba(247, 244, 238, 0.86);
}

.page-about .about-version__tablewrap {
  margin-top: 26px;
  overflow-x: auto;
  border: 1px solid rgba(247, 244, 238, 0.24);
  background: rgba(34, 40, 42, 0.28);
  -webkit-overflow-scrolling: touch;
}

.page-about .ver-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: var(--fs-15);
  line-height: 1.7;
}

.page-about .ver-table caption {
  text-align: left;
}

.page-about .ver-table th,
.page-about .ver-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(247, 244, 238, 0.16);
}

.page-about .ver-table thead th {
  background: var(--sand-600);
  color: var(--rock-deep);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-13);
  letter-spacing: 0.12em;
  white-space: nowrap;
}

.page-about .ver-table thead th.ver-table__focus {
  background: var(--orange);
  color: #ffffff;
}

.page-about .ver-table tbody th {
  width: 20%;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-15);
  color: var(--sand-300);
  white-space: nowrap;
}

.page-about .ver-table tbody td {
  color: rgba(247, 244, 238, 0.9);
}

.page-about .ver-table tbody td:last-child {
  color: var(--cream);
  border-left: 2px solid rgba(232, 98, 42, 0.55);
}

.page-about .ver-table tbody tr:nth-child(odd) {
  background: rgba(247, 244, 238, 0.06);
}

.page-about .ver-table tbody tr:last-child th,
.page-about .ver-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-about .ver-advice {
  margin-top: 22px;
  display: grid;
  gap: 14px;
}

.page-about .ver-advice__item {
  padding: 16px 18px;
  background: rgba(247, 244, 238, 0.08);
  border-left: 3px solid var(--sand-300);
}

.page-about .ver-advice__item--accent {
  border-left-color: var(--orange);
  background: rgba(232, 98, 42, 0.12);
}

.page-about .ver-advice__tag {
  margin: 0 0 6px;
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--sand-300);
}

.page-about .ver-advice__item--accent .ver-advice__tag {
  color: #f3a984;
}

.page-about .ver-advice__item p {
  margin: 0;
  font-size: var(--fs-15);
  line-height: 1.75;
  color: rgba(247, 244, 238, 0.94);
}

.page-about .about-version__more {
  margin: 20px 0 0;
  font-size: var(--fs-15);
  color: rgba(247, 244, 238, 0.86);
}

.page-about .about-version__more a {
  color: var(--sand-300);
}

@media (min-width: 800px) {
  .page-about .ver-advice {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
}

/* ---------- 协作与资质 ---------- */
.page-about .about-eco {
  background: var(--cream);
}

.page-about .about-eco__inner {
  display: grid;
  gap: clamp(26px, 4vw, 42px);
  align-items: start;
}

.page-about .about-eco__main > p {
  margin: 14px 0 0;
  max-width: 40em;
  color: #3a4346;
}

.page-about .about-eco__actions {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-eco__aside {
  padding: 20px 18px;
  background: var(--snow-100);
  border: 1px solid var(--line);
  border-top: 3px solid var(--snow-700);
}

.page-about .eco-stat {
  padding: 12px 0;
  border-bottom: 1px dashed var(--snow-300);
}

.page-about .eco-stat:first-child {
  padding-top: 0;
}

.page-about .eco-stat__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--snow-700);
  line-height: 1.1;
}

.page-about .eco-stat__label {
  margin: 4px 0 0;
  font-size: var(--fs-13);
  line-height: 1.7;
  color: #3f4a4d;
}

.page-about .about-eco__aside-note {
  margin: 14px 0 0;
  font-size: var(--fs-13);
  line-height: 1.75;
  color: #3f4a4d;
}

.page-about .about-eco__aside-note a {
  color: var(--orange-deep);
}

@media (min-width: 900px) {
  .page-about .about-eco__inner {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: clamp(18px, 3vw, 40px);
  }

  .page-about .about-eco__main {
    grid-column: 1 / span 7;
  }

  .page-about .about-eco__aside {
    grid-column: 9 / span 4;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-card,
  .page-about .tl-item,
  .page-about .tl-item::after {
    transition: none;
  }

  .page-about .team-card:hover,
  .page-about .team-card:nth-child(2):hover,
  .page-about .team-card:nth-child(4):hover {
    transform: none;
  }
}
<<<END>>>