.page-about {
  --about-indent: 4%;
  display: block;
}

/* ── 首屏 ───────────────────────────────────────── */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(30px, 5vw, 64px) 0;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -14%;
  right: -18%;
  width: min(780px, 78vw);
  height: min(780px, 78vw);
  z-index: -1;
  clip-path: polygon(20% 0, 100% 14%, 80% 100%, 0 74%);
  background: radial-gradient(circle at 34% 32%, rgba(33, 230, 193, 0.3), rgba(33, 230, 193, 0) 64%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  bottom: -8%;
  left: -10%;
  width: min(460px, 52vw);
  height: min(460px, 52vw);
  z-index: -1;
  clip-path: polygon(0 18%, 84% 0, 100% 78%, 12% 100%);
  background: radial-gradient(circle at 60% 60%, rgba(255, 138, 61, 0.22), rgba(255, 138, 61, 0) 66%);
  pointer-events: none;
}

.page-about .about-hero .shell {
  position: relative;
  z-index: 1;
}

.page-about .about-hero .crumb {
  margin-bottom: clamp(22px, 3.5vw, 42px);
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 5.6vw, 66px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.page-about .about-hero .lede {
  margin-top: clamp(18px, 2.6vw, 30px);
  max-width: 62ch;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3.4vw, 38px);
}

.page-about .about-stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 3.6vw, 56px);
  margin: clamp(34px, 5vw, 60px) 0 0;
  padding-top: clamp(18px, 2.4vw, 26px);
  border-top: 1px solid var(--c-line);
}

.page-about .about-stats .stat {
  display: flex;
  flex-direction: column-reverse;
  gap: 4px;
  min-width: 0;
}

.page-about .about-stats .stat__value {
  font-size: clamp(26px, 3.4vw, 40px);
}

.page-about .about-stats .stat__label {
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-about .about-hero__fig {
  margin: clamp(38px, 6vw, 76px) 0 0;
  padding-inline: var(--gut);
}

.page-about .about-hero__media {
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  overflow: hidden;
  aspect-ratio: 14 / 9;
  background: linear-gradient(150deg, rgba(11, 34, 57, 0.9), rgba(5, 15, 27, 0.95));
}

.page-about .about-hero__media .media__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ── 我们做什么 ─────────────────────────────────── */
.page-about .about-what__head {
  max-width: 66ch;
}

.page-about .about-what__head p {
  margin-top: 16px;
  color: var(--c-muted);
}

.page-about .about-lines {
  list-style: none;
  margin: clamp(34px, 5vw, 62px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
  grid-template-columns: 1fr;
}

.page-about .about-line {
  position: relative;
  padding: clamp(22px, 3vw, 34px);
  padding-top: clamp(28px, 3.6vw, 40px);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  background:
    linear-gradient(155deg, rgba(33, 230, 193, 0.07), rgba(33, 230, 193, 0) 56%),
    var(--c-panel-2);
  overflow: hidden;
}

.page-about .about-line::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
}

.page-about .about-line:nth-child(1)::before {
  background: linear-gradient(90deg, var(--c-cyan), rgba(33, 230, 193, 0));
}

.page-about .about-line:nth-child(2)::before {
  background: linear-gradient(90deg, var(--c-orange), rgba(255, 138, 61, 0));
}

.page-about .about-line:nth-child(3)::before {
  background: linear-gradient(90deg, var(--c-violet), rgba(167, 139, 250, 0));
}

.page-about .about-line__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
}

.page-about .about-line__title {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-about .about-line p {
  color: var(--c-muted);
  font-size: 15.5px;
}

.page-about .about-line__meta {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--c-line);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-orange-soft);
}

/* ── 发展历程 ───────────────────────────────────── */
.page-about .tl {
  list-style: none;
  margin: clamp(34px, 5vw, 62px) 0 0;
  padding: 0;
}

.page-about .tl__item {
  position: relative;
  display: grid;
  gap: 14px;
  padding-block: clamp(18px, 2.6vw, 30px);
}

.page-about .tl__year {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--c-cyan);
}

.page-about .tl__year::before {
  content: "";
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--c-cyan);
  box-shadow: 0 0 0 4px rgba(33, 230, 193, 0.16);
}

.page-about .tl__card {
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  background: linear-gradient(150deg, rgba(11, 34, 57, 0.94), rgba(7, 22, 38, 0.88));
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease);
}

.page-about .tl__title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(19px, 2.4vw, 27px);
  line-height: 1.32;
  letter-spacing: 0;
}

.page-about .tl__card p {
  color: var(--c-muted);
  font-size: 15.5px;
}

.page-about .tl__meta {
  margin: 16px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--c-cyan-dark);
}

/* ── 团队与区域驻点 ─────────────────────────────── */
.page-about .about-team__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  grid-template-columns: 1fr;
}

.page-about .about-team__main p {
  margin-top: 16px;
  color: var(--c-muted);
  max-width: 62ch;
}

.page-about .posts {
  list-style: none;
  margin: clamp(24px, 3.2vw, 38px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.page-about .posts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 18px;
  border-left: 2px solid var(--c-cyan);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: linear-gradient(90deg, rgba(33, 230, 193, 0.09), rgba(33, 230, 193, 0) 86%);
}

.page-about .posts__city {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--c-cyan);
}

.page-about .posts__desc {
  font-size: 14.5px;
  color: var(--c-muted);
  line-height: 1.6;
}

.page-about .about-ring {
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(circle at 50% 0%, rgba(33, 230, 193, 0.1), rgba(33, 230, 193, 0) 62%),
    var(--c-panel-2);
}

.page-about .about-ring__title {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.page-about .about-ring__svg {
  display: block;
  width: min(270px, 76%);
  height: auto;
  margin: 0 auto clamp(18px, 2.4vw, 26px);
}

.page-about .ring__seg {
  fill: none;
  stroke-width: 16;
  stroke-linecap: butt;
  transition: stroke-width 0.3s var(--ease), opacity 0.3s var(--ease);
}

.page-about .ring__seg--a { stroke: var(--c-cyan); }
.page-about .ring__seg--b { stroke: var(--c-orange); }
.page-about .ring__seg--c { stroke: var(--c-violet); }

.page-about .ring__seg:hover {
  stroke-width: 23;
}

.page-about .about-ring__num {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 800;
  fill: var(--c-text);
}

.page-about .about-ring__unit {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  fill: var(--c-muted);
}

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

.page-about .about-ring__legend li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--c-muted);
  transition: color 0.25s var(--ease);
}

.page-about .about-ring__legend li:hover {
  color: var(--c-text);
}

.page-about .dot-c {
  width: 10px;
  height: 10px;
  flex: none;
  border-radius: 50%;
}

.page-about .dot-c--a { background: var(--c-cyan); }
.page-about .dot-c--b { background: var(--c-orange); }
.page-about .dot-c--c { background: var(--c-violet); }

.page-about .about-team__map {
  margin: clamp(32px, 4.4vw, 56px) 0 0;
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  overflow: hidden;
  aspect-ratio: 1100 / 820;
  background: linear-gradient(140deg, rgba(11, 34, 57, 0.9), rgba(5, 15, 27, 0.95));
}

.page-about .about-team__map .media__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ── 终端适配与索引 ─────────────────────────────── */
.page-about .about-index__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  grid-template-columns: 1fr;
  align-items: center;
}

.page-about .about-index__fig {
  margin: 0;
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  overflow: hidden;
  aspect-ratio: 3 / 2;
  background: linear-gradient(150deg, rgba(11, 34, 57, 0.9), rgba(5, 15, 27, 0.95));
}

.page-about .about-index__fig .media__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-index__body p {
  margin-top: 16px;
  color: var(--c-muted);
  max-width: 60ch;
}

.page-about .tag-row {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-index__link {
  margin-top: 24px;
}

/* ── 合作生态 ───────────────────────────────────── */
.page-about .about-eco__head {
  max-width: 64ch;
}

.page-about .about-eco__head p {
  margin-top: 16px;
  color: var(--c-muted);
}

.page-about .eco {
  list-style: none;
  margin: clamp(32px, 4.6vw, 58px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(14px, 2vw, 22px);
  grid-template-columns: 1fr;
}

.page-about .eco__item {
  position: relative;
  padding: clamp(20px, 2.8vw, 30px);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  background: var(--c-panel-2);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-about .eco__item:hover {
  border-color: var(--c-cyan);
  transform: translateY(-4px);
}

.page-about .eco__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--c-orange-soft);
}

.page-about .eco__title {
  margin: 10px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 700;
}

.page-about .eco__item p:last-child {
  color: var(--c-muted);
  font-size: 15px;
}

/* ── 资质与荣誉 ─────────────────────────────────── */
.page-about .about-honor__grid {
  display: grid;
  gap: clamp(28px, 4vw, 58px);
  grid-template-columns: 1fr;
}

.page-about .about-honor__intro p {
  margin-top: 16px;
  color: var(--c-muted);
  max-width: 54ch;
}

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

.page-about .honor__item {
  padding: 18px 0;
  border-bottom: 1px solid var(--c-line);
  display: grid;
  gap: 6px;
}

.page-about .honor__item:first-child {
  border-top: 1px solid var(--c-line);
}

.page-about .honor__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
}

.page-about .honor__val {
  margin: 0;
  font-size: 15.5px;
  color: var(--c-text);
  line-height: 1.7;
}

/* ── 收尾 ───────────────────────────────────────── */
.page-about .about-cta__inner {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
  grid-template-columns: 1fr;
  padding: clamp(28px, 4vw, 52px);
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(circle at 88% 12%, rgba(255, 138, 61, 0.16), rgba(255, 138, 61, 0) 58%),
    linear-gradient(140deg, rgba(33, 230, 193, 0.08), rgba(11, 34, 57, 0.92) 60%);
}

.page-about .about-cta__inner p {
  margin-top: 14px;
  color: var(--c-muted);
  max-width: 56ch;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

/* ── 响应式 ─────────────────────────────────────── */
@media (min-width: 620px) {
  .page-about .posts {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (min-width: 860px) {
  .page-about .about-lines {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .tl__item {
    grid-template-columns: 176px 1fr;
    align-items: start;
    gap: clamp(22px, 3.6vw, 52px);
  }

  .page-about .tl__item:not(:last-child)::before {
    content: "";
    position: absolute;
    left: 3.5px;
    top: 32px;
    bottom: -6px;
    width: 1px;
    background: linear-gradient(to bottom, var(--c-line), rgba(22, 64, 95, 0));
  }

  .page-about .tl__item:hover .tl__card {
    transform: translateX(8px);
    border-color: var(--c-cyan);
  }

  .page-about .tl__item:nth-child(2) .tl__card { margin-left: 4%; }
  .page-about .tl__item:nth-child(3) .tl__card { margin-left: 8%; }
  .page-about .tl__item:nth-child(4) .tl__card { margin-left: 12%; }
}

@media (min-width: 960px) {
  .page-about .about-team__grid {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }

  .page-about .about-index__grid {
    grid-template-columns: 7fr 5fr;
  }

  .page-about .about-index__fig {
    aspect-ratio: 4 / 3;
  }

  .page-about .about-honor__grid {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-about .about-cta__inner {
    grid-template-columns: 1fr auto;
    align-items: center;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (max-width: 619px) {
  .page-about .about-hero::before,
  .page-about .about-hero::after {
    opacity: 0.6;
  }

  .page-about .about-stats {
    gap: 20px 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl__card,
  .page-about .eco__item,
  .page-about .ring__seg {
    transition: none !important;
    transform: none !important;
  }
}
<<<END>>>