.page-about {
  --about-gap: clamp(80px, 11vw, 150px);
  --about-band-pad: clamp(34px, 4.6vw, 64px);
  background: var(--paper);
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: linear-gradient(152deg, #262A5C 0%, #1A1D49 54%, #10161A 100%);
  color: var(--paper);
  padding: clamp(40px, 6vw, 76px) 0 clamp(56px, 8vw, 104px);
}
.page-about .about-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-about .about-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .26;
}
.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(38, 42, 92, .94) 0%, rgba(26, 29, 73, .74) 48%, rgba(16, 22, 26, .95) 100%);
}
.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
}
.page-about .about-crumbs {
  margin: 0 0 clamp(24px, 3.4vw, 44px);
  font-size: 13px;
  letter-spacing: .06em;
}
.page-about .about-crumbs a {
  color: var(--green-soft);
  text-decoration: none;
}
.page-about .about-crumbs a:hover {
  color: var(--amber);
}
.page-about .about-crumbs li {
  color: rgba(244, 251, 247, .62);
}
.page-about .about-hero__kicker {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--amber);
}
.page-about .about-hero__title {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 900;
  font-style: italic;
  font-size: clamp(2.2rem, 6vw, 4.9rem);
  line-height: 1.01;
  letter-spacing: -.02em;
  max-width: 18ch;
}
.page-about .about-hero__lede {
  margin: clamp(20px, 2.8vw, 32px) 0 0;
  max-width: 62ch;
  font-size: clamp(16px, 1.3vw, 17.5px);
  line-height: 1.8;
  color: rgba(244, 251, 247, .86);
}
.page-about .about-hero__facts {
  list-style: none;
  margin: clamp(34px, 4.6vw, 56px) 0 0;
  padding: clamp(22px, 3vw, 32px) 0 0;
  border-top: 1px solid var(--line-dark);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 18px;
}
.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.page-about .about-fact__num {
  font-size: clamp(1.5rem, 3.1vw, 2.2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--paper);
}
.page-about .about-fact__cap {
  font-size: 13px;
  line-height: 1.5;
  color: rgba(244, 251, 247, .6);
}

/* ---------- 外壳与索引 ---------- */
.page-about .about-shell {
  margin: 0 auto;
  max-width: calc(var(--wrap) + 190px);
  padding: 0 var(--gut);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}
.page-about .about-body {
  min-width: 0;
}
.page-about .about-rail {
  display: none;
}
.page-about .about-rail .index-link {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  border-left: 2px solid transparent;
  padding: 8px 10px;
  font: inherit;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--muted);
  cursor: pointer;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.page-about .about-rail .index-link:hover,
.page-about .about-rail .index-link.is-active {
  color: var(--green);
  border-left-color: var(--orange);
}
.page-about .about-rail .index-link:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

/* ---------- 画板 ---------- */
.page-about .about-band {
  position: relative;
}
.page-about .about-body > .about-band {
  margin-block: clamp(64px, 9vw, 132px);
}
.page-about .about-body > .about-band:first-child {
  margin-top: clamp(56px, 7vw, 96px);
}
.page-about .about-body > .about-band--indigo {
  padding: var(--about-band-pad) clamp(22px, 3.6vw, 52px);
  border-radius: 2px;
  background: linear-gradient(180deg, #262A5C 0%, #1D2150 62%, #191C48 100%);
  color: var(--paper);
  box-shadow: var(--shadow);
}
.page-about .about-band--indigo::before {
  content: "";
  position: absolute;
  top: 0;
  left: -1.5%;
  right: -1.5%;
  height: 3px;
  background: linear-gradient(90deg, rgba(255, 106, 24, 0) 0%, var(--orange) 32%, var(--amber) 68%, rgba(255, 182, 39, 0) 100%);
  transform: rotate(-.35deg);
  transform-origin: left center;
}

/* ---------- 章节标题区 ---------- */
.page-about .about-head {
  margin-bottom: clamp(26px, 3.6vw, 48px);
}
.page-about .coord {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding-left: 26px;
  margin-bottom: 16px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--muted);
}
.page-about .coord::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 18px;
  height: 3px;
  background: var(--orange);
  transform: translateY(-50%) skewX(-24deg);
}
.page-about .coord-num {
  font-family: var(--f-data);
  color: var(--green);
}
.page-about .coord--light {
  color: rgba(244, 251, 247, .58);
}
.page-about .coord--light .coord-num {
  color: var(--amber);
}
.page-about .section-title {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 800;
  font-style: italic;
  font-size: clamp(1.85rem, 4.2vw, 3.3rem);
  line-height: 1.03;
  letter-spacing: -.015em;
  max-width: 21ch;
}
.page-about .about-lede {
  margin: clamp(16px, 2vw, 26px) 0 0;
  max-width: 68ch;
  font-size: clamp(16px, 1.3vw, 17.5px);
  line-height: 1.8;
}
.page-about .about-band--indigo .lede,
.page-about .about-band--indigo .prose,
.page-about .about-prose--light {
  color: rgba(244, 251, 247, .82);
}
.page-about .about-band--indigo .prose {
  margin-bottom: 0;
}
.page-about .about-split {
  gap: clamp(28px, 4.6vw, 68px);
  align-items: start;
}
.page-about .about-split__main .prose + .prose {
  margin-top: 18px;
}
.page-about .about-split__main .prose {
  max-width: 62ch;
}

/* ---------- 主张卡 ---------- */
.page-about .about-plate {
  border: 1px solid var(--line);
  border-top: 3px solid var(--green);
  background: #FFFFFF;
  padding: clamp(22px, 2.8vw, 32px);
  border-radius: 2px;
  box-shadow: var(--shadow);
}
.page-about .about-plate__title {
  margin: 0 0 18px;
  font-family: var(--f-head);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -.01em;
}
.page-about .about-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}
.page-about .about-points li {
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}
.page-about .about-points li:first-child {
  padding-top: 0;
  border-top: 0;
}
.page-about .about-points strong {
  display: block;
  margin-bottom: 4px;
  color: var(--text);
  font-weight: 800;
}

/* ---------- 三条线卡片 ---------- */
.page-about .about-cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}
.page-about .about-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 2.4vw, 30px);
  border: 1px solid rgba(203, 217, 210, .22);
  border-radius: 2px;
  background: rgba(244, 251, 247, .06);
  transition: background-color .2s var(--ease), transform .2s var(--ease);
}
.page-about .about-card:hover {
  background: rgba(244, 251, 247, .11);
  transform: translateY(-4px);
}
.page-about .about-card .badge {
  align-self: flex-start;
}
.page-about .about-card .card-title {
  margin: 0;
  font-family: var(--f-head);
  font-weight: 800;
  font-size: 1.15rem;
  line-height: 1.3;
  color: var(--paper);
}
.page-about .about-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 251, 247, .76);
}
.page-about .about-card__link {
  margin-top: auto;
  align-self: flex-start;
  padding-bottom: 2px;
  font-size: 14px;
  font-weight: 700;
  color: var(--green-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(111, 211, 168, .42);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.page-about .about-card__link:hover {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* ---------- 图文 ---------- */
.page-about .about-figure {
  margin: clamp(26px, 3.6vw, 46px) 0 0;
}
.page-about .about-figure--aside {
  margin-top: 0;
}
.page-about .about-figure .media-frame {
  position: relative;
  overflow: hidden;
  border-radius: 2px;
  border: 1px solid var(--line);
}
.page-about .about-band--indigo .about-figure .media-frame {
  border-color: rgba(203, 217, 210, .22);
}
.page-about .about-figure .ratio-16-9 {
  aspect-ratio: 16 / 9;
}
.page-about .about-figure .ratio-4-3 {
  aspect-ratio: 4 / 3;
}
.page-about .about-figure img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  display: block;
}
.page-about .about-caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--muted);
}
.page-about .about-band--indigo .about-caption {
  color: rgba(244, 251, 247, .55);
}

/* ---------- 团队分工 ---------- */
.page-about .about-team {
  margin-top: clamp(28px, 3.6vw, 46px);
}
.page-about .about-sub {
  margin: 0 0 20px;
  font-family: var(--f-head);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -.01em;
}
.page-about .about-bars {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}
.page-about .about-bar {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
}
.page-about .about-bar__name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}
.page-about .about-bar__track {
  display: block;
  height: 12px;
  border-radius: 999px;
  background: rgba(203, 217, 210, .55);
  overflow: hidden;
}
.page-about .about-bar__fill {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--green), var(--green-soft));
  transition: filter .18s var(--ease);
}
.page-about .about-bar:nth-child(2) .about-bar__fill {
  background: linear-gradient(90deg, #D2540F, var(--orange));
}
.page-about .about-bar:nth-child(3) .about-bar__fill {
  background: linear-gradient(90deg, #C98A12, var(--amber));
}
.page-about .about-bar:first-child .about-bar__fill { width: 38.2%; }
.page-about .about-bar:nth-child(2) .about-bar__fill { width: 35.3%; }
.page-about .about-bar:nth-child(3) .about-bar__fill { width: 26.5%; }
.page-about .about-bar:hover .about-bar__fill {
  filter: brightness(1.15);
}
.page-about .about-bar__num {
  font-size: 13px;
  color: var(--muted);
  white-space: nowrap;
}

/* ---------- 指标清单 ---------- */
.page-about .about-kv {
  margin: clamp(24px, 3vw, 38px) 0 0;
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(203, 217, 210, .22);
}
.page-about .about-kv__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(203, 217, 210, .16);
}
.page-about .about-kv__key {
  margin: 0;
  font-size: 14px;
  color: rgba(244, 251, 247, .72);
}
.page-about .about-kv__val {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--amber);
  white-space: nowrap;
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 8px;
  bottom: 30px;
  width: 2px;
  background: linear-gradient(180deg, var(--green) 0%, var(--amber) 46%, rgba(255, 182, 39, .08) 100%);
}
.page-about .about-tl {
  position: relative;
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  column-gap: 16px;
  padding-bottom: 36px;
}
.page-about .about-tl:last-child {
  padding-bottom: 0;
}
.page-about .about-tl__year {
  grid-column: 2;
  grid-row: 1;
  margin-bottom: 6px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--green);
}
.page-about .about-tl__mark {
  grid-column: 1;
  grid-row: 1 / span 2;
  display: flex;
  justify-content: center;
  padding-top: 3px;
}
.page-about .about-tl__mark .dot {
  display: block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(255, 182, 39, .2);
}
.page-about .about-tl__body {
  grid-column: 2;
  grid-row: 2;
}
.page-about .about-tl__title {
  margin: 0 0 6px;
  font-family: var(--f-head);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -.01em;
}
.page-about .about-tl__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 58ch;
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}
.page-about .about-partner {
  padding: 26px 24px 30px;
  border: 1px solid rgba(203, 217, 210, .22);
  border-top: 3px solid var(--green);
  background: rgba(244, 251, 247, .05);
  border-radius: 2px;
}
.page-about .about-partner:nth-child(2) {
  border-top-color: var(--orange);
}
.page-about .about-partner:nth-child(3) {
  border-top-color: var(--amber);
}
.page-about .about-partner .badge {
  margin-bottom: 14px;
}
.page-about .about-partner__title {
  margin: 0 0 10px;
  font-family: var(--f-head);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--paper);
}
.page-about .about-partner p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 251, 247, .76);
}
.page-about .about-honor {
  margin: clamp(28px, 3.6vw, 44px) 0 0;
  padding-top: 20px;
  border-top: 1px solid rgba(203, 217, 210, .2);
  font-size: 15px;
  line-height: 1.7;
  color: var(--amber);
  letter-spacing: .02em;
}

/* ---------- 日常节奏 ---------- */
.page-about .about-rhythm {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}
.page-about .about-rhythm li {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.page-about .about-rhythm__num {
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--green);
}
.page-about .about-rhythm__cap {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}
.page-about .about-close {
  margin: clamp(26px, 3.4vw, 42px) 0 0;
  max-width: 60ch;
}

/* ---------- 收束 ---------- */
.page-about .about-cta {
  position: relative;
  overflow: hidden;
  background: linear-gradient(140deg, #0A2E2A 0%, #10161A 100%);
  color: var(--paper);
  padding: clamp(56px, 8vw, 104px) 0;
}
.page-about .about-cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: -10%;
  width: 120%;
  height: 3px;
  background: linear-gradient(90deg, rgba(15, 163, 107, 0), var(--green) 40%, var(--orange) 78%, rgba(255, 106, 24, 0));
  transform: rotate(-.4deg);
  transform-origin: left center;
}
.page-about .about-cta__title {
  margin: 0 0 18px;
  font-family: var(--f-display);
  font-weight: 900;
  font-style: italic;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.05;
  letter-spacing: -.02em;
}
.page-about .about-cta__text {
  margin: 0 0 clamp(26px, 3.4vw, 40px);
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(244, 251, 247, .78);
}
.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
  }
  .page-about .about-rhythm {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }
  .page-about .about-tl {
    grid-template-columns: 104px 26px minmax(0, 1fr);
    column-gap: 20px;
    padding-bottom: 44px;
  }
  .page-about .about-tl__year {
    grid-column: 1;
    grid-row: 1 / span 2;
    margin: 0;
    padding-top: 2px;
    text-align: right;
    font-size: 22px;
  }
  .page-about .about-tl__mark {
    grid-column: 2;
    grid-row: 1 / span 2;
    padding-top: 6px;
  }
  .page-about .about-tl__body {
    grid-column: 3;
    grid-row: 1 / span 2;
  }
  .page-about .about-timeline::before {
    left: 136px;
  }
}

@media (min-width: 900px) {
  .page-about .about-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
  }
  .page-about .about-cards > li:nth-child(2) {
    margin-top: 26px;
  }
  .page-about .about-cards > li:nth-child(3) {
    margin-top: 52px;
  }
  .page-about .about-partners {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }
  .page-about .about-partner:nth-child(2) {
    margin-top: 22px;
  }
  .page-about .about-partner:nth-child(3) {
    margin-top: 44px;
  }
  .page-about .about-rhythm {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    column-gap: 32px;
  }
  .page-about .about-rhythm li {
    border-bottom: 0;
    padding: 26px 0 0;
  }
}

@media (min-width: 1080px) {
  .page-about .about-shell {
    grid-template-columns: 150px minmax(0, 1fr);
    column-gap: 30px;
  }
  .page-about .about-rail {
    display: flex;
    flex-direction: column;
    gap: 2px;
    position: sticky;
    top: 132px;
    align-self: start;
    padding-top: clamp(64px, 7vw, 96px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-card,
  .page-about .about-bar__fill,
  .page-about .about-card__link,
  .page-about .about-rail .index-link {
    transition: none !important;
  }
  .page-about .about-card:hover {
    transform: none;
  }
}
<<<END>>>