.page-about {
  --about-hair: rgba(167, 176, 189, 0.16);
  --about-hair-strong: rgba(167, 176, 189, 0.3);
  --about-panel: linear-gradient(158deg, rgba(34, 211, 238, 0.12), rgba(11, 14, 19, 0.9) 58%);
  --about-panel-gold: linear-gradient(158deg, rgba(245, 158, 11, 0.14), rgba(11, 14, 19, 0.9) 58%);
  --tone: var(--cyan);
  --tone-soft: rgba(34, 211, 238, 0.14);
  padding-bottom: clamp(56px, 8vw, 112px);
}

.page-about .about-crumb {
  padding-top: clamp(18px, 3vw, 30px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  padding: clamp(22px, 4vw, 46px) 0 clamp(30px, 5vw, 60px);
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-hero__lead .eyebrow {
  margin-bottom: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-about .about-hero__lead h1 {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 5vw, 3.15rem);
  line-height: 1.14;
  letter-spacing: -0.03em;
  color: var(--white);
  margin: 0 0 18px;
  max-width: 20ch;
}

.page-about .about-hero__lead .lede {
  color: var(--silver);
  font-size: clamp(0.96rem, 1.6vw, 1.08rem);
  line-height: 1.85;
  max-width: 46ch;
  margin: 0 0 18px;
}

.page-about .about-copy {
  color: var(--silver);
  font-size: 0.96rem;
  line-height: 1.9;
  margin: 0;
}

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

.page-about .about-copy--tight {
  margin-top: 20px;
}

.page-about .about-copy strong {
  color: var(--white);
  font-weight: 600;
}

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

.page-about .about-hero__panel {
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-xl);
  background: var(--about-panel);
  padding: clamp(18px, 3vw, 28px);
}

.page-about .about-hero__panel-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 16px;
}

.page-about .about-dials {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .about-dial {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px;
  border-radius: var(--radius-m);
  border: 1px solid var(--about-hair);
  background: rgba(5, 7, 10, 0.6);
  transition: border-color var(--dur-1) var(--ease), background var(--dur-1) var(--ease);
}

.page-about .about-dial:hover {
  border-color: var(--about-hair-strong);
  background: rgba(5, 7, 10, 0.82);
}

.page-about .about-dial__num {
  font-family: var(--font-mono);
  font-size: clamp(1.2rem, 3vw, 1.55rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .about-dial__unit {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--silver);
}

.page-about .about-dial__label {
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--silver);
}

.page-about .about-dial--cyan .about-dial__num { color: var(--cyan); }
.page-about .about-dial--gold .about-dial__num { color: var(--gold); }
.page-about .about-dial--azure .about-dial__num { color: var(--azure); }
.page-about .about-dial--lime .about-dial__num { color: var(--lime); }

.page-about .about-hero__panel-note {
  margin: 16px 0 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--silver);
}

/* ---------- 页内目录 ---------- */
.page-about .about-toc {
  display: flex;
  gap: 8px;
  padding: 18px 0 0;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-about .about-toc__link {
  flex: 0 0 auto;
  padding: 8px 15px;
  border-radius: var(--pill);
  border: 1px solid var(--about-hair);
  color: var(--silver);
  font-size: 0.82rem;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease),
    background var(--dur-1) var(--ease);
}

.page-about .about-toc__link:hover {
  color: var(--white);
  border-color: var(--about-hair-strong);
  background: rgba(34, 211, 238, 0.09);
}

.page-about .about-toc__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-about .about-toc__link[aria-current="true"] {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 600;
}

/* ---------- 章节基座 ---------- */
.page-about .about-block {
  padding: clamp(42px, 6vw, 82px) 0;
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-block--last {
  border-bottom: 0;
  padding-bottom: clamp(24px, 4vw, 48px);
}

.page-about .about-block__head {
  max-width: 64ch;
  margin-bottom: clamp(24px, 3.5vw, 42px);
}

.page-about .about-block__head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.95rem);
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: var(--white);
  margin: 8px 0 12px;
}

.page-about .about-block__desc {
  margin: 0;
  color: var(--silver);
  font-size: 0.95rem;
  line-height: 1.85;
}

.page-about .about-cols {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

/* ---------- 引文 ---------- */
.page-about .about-quote {
  margin: 0;
  padding: 10px 0 10px 22px;
  border-left: 2px solid var(--gold);
  font-family: var(--font-serif);
  font-size: clamp(1.02rem, 2.1vw, 1.28rem);
  line-height: 1.75;
  color: var(--white);
}

/* ---------- 时间线 ---------- */
.page-about .about-road {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 4px 0 0 28px;
}

.page-about .about-road::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), var(--gold) 58%, rgba(167, 176, 189, 0.06));
}

.page-about .about-road__item {
  position: relative;
  padding-bottom: 30px;
}

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

.page-about .about-road__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 5px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.12);
  transition: box-shadow var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease);
}

.page-about .about-road__item:nth-child(3)::before {
  border-color: var(--gold);
  box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.14);
}

.page-about .about-road__item:hover::before {
  box-shadow: 0 0 0 7px rgba(34, 211, 238, 0.16);
}

.page-about .about-road__year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
  margin-bottom: 4px;
}

.page-about .about-road__item:nth-child(3) .about-road__year {
  color: var(--gold);
}

.page-about .about-road__title {
  margin: 0 0 6px;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: -0.01em;
}

.page-about .about-road__body {
  margin: 0;
  color: var(--silver);
  font-size: 0.92rem;
  line-height: 1.8;
  max-width: 46ch;
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 0;
}

.page-about .about-figure .media__img,
.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-l);
  border: 1px solid var(--about-hair);
}

.page-about .about-figure .media__caption {
  margin-top: 10px;
  font-size: 0.76rem;
  line-height: 1.6;
  color: var(--silver);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .about-crews {
  list-style: none;
  margin: 0 0 4px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-crew {
  display: grid;
  gap: 4px;
  padding: 15px 18px;
  border-radius: var(--radius-m);
  border: 1px solid var(--about-hair);
  border-left: 3px solid var(--tone);
  background: rgba(11, 14, 19, 0.66);
  transition: border-color var(--dur-1) var(--ease), transform var(--dur-1) var(--ease);
}

.page-about .about-crew:hover {
  transform: translateY(-1px);
  border-top-color: var(--about-hair-strong);
  border-right-color: var(--about-hair-strong);
  border-bottom-color: var(--about-hair-strong);
}

.page-about .about-crew--cyan { --tone: var(--cyan); }
.page-about .about-crew--gold { --tone: var(--gold); }
.page-about .about-crew--azure { --tone: var(--azure); }
.page-about .about-crew--lime { --tone: var(--lime); }

.page-about .about-crew__name {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--tone);
}

.page-about .about-crew__desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--silver);
}

/* ---------- 服务范围 ---------- */
.page-about .about-scope {
  display: grid;
  gap: 14px;
}

.page-about .about-scope__item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 22px 22px 26px;
  border-radius: var(--radius-l);
  border: 1px solid var(--about-hair);
  background: rgba(11, 14, 19, 0.7);
  overflow: hidden;
  transition: transform var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease);
}

.page-about .about-scope__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--tone);
}

.page-about .about-scope__item:hover {
  transform: translateY(-2px);
  border-color: var(--about-hair-strong);
}

.page-about .about-scope__item--cyan { --tone: var(--cyan); }
.page-about .about-scope__item--gold { --tone: var(--gold); }
.page-about .about-scope__item--azure { --tone: var(--azure); }
.page-about .about-scope__item--lime { --tone: var(--lime); }

.page-about .about-scope__num {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--tone);
}

.page-about .about-scope__title {
  margin: 0;
  font-size: 1.06rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .about-scope__desc {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.82;
  color: var(--silver);
}

.page-about .about-scope__link {
  align-self: flex-start;
  margin-top: 2px;
  font-size: 0.84rem;
  color: var(--tone);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-1) var(--ease);
}

.page-about .about-scope__link:hover {
  border-bottom-color: currentColor;
}

.page-about .about-scope__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- 设备适配 ---------- */
.page-about .about-devices {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-devices__row {
  display: grid;
  gap: 8px;
  padding: 20px 0;
  border-bottom: 1px solid var(--about-hair);
  border-left: 2px solid transparent;
  padding-left: 0;
  transition: padding-left var(--dur-2) var(--ease), border-left-color var(--dur-2) var(--ease);
}

.page-about .about-devices__row:hover {
  padding-left: 14px;
  border-left-color: var(--tone);
}

.page-about .about-devices__row--lime { --tone: var(--lime); }
.page-about .about-devices__row--cyan { --tone: var(--cyan); }
.page-about .about-devices__row--azure { --tone: var(--azure); }

.page-about .about-devices__key {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--tone);
}

.page-about .about-devices__desc {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.85;
  color: var(--silver);
  max-width: 60ch;
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco {
  display: grid;
  gap: clamp(22px, 3.5vw, 34px);
}

.page-about .about-eco__stats {
  display: grid;
  gap: 12px;
}

.page-about .about-eco__stat {
  display: grid;
  gap: 6px;
  padding: 20px;
  border-radius: var(--radius-l);
  border: 1px solid var(--about-hair);
  background: var(--about-panel);
}

.page-about .about-eco__stat--gold {
  background: var(--about-panel-gold);
}

.page-about .about-eco__stat-num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--white);
}

.page-about .about-eco__stat--cyan .about-eco__stat-num { color: var(--cyan); }
.page-about .about-eco__stat--gold .about-eco__stat-num { color: var(--gold); }

.page-about .about-eco__stat-label {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--silver);
}

.page-about .about-folds {
  display: grid;
  gap: 10px;
}

.page-about .about-fold {
  border-radius: var(--radius-m);
  border: 1px solid var(--about-hair);
  background: rgba(11, 14, 19, 0.62);
  overflow: hidden;
}

.page-about .about-fold[open] {
  border-color: var(--about-hair-strong);
}

.page-about .about-fold__summary {
  cursor: pointer;
  padding: 16px 18px;
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--white);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-about .about-fold__summary::-webkit-details-marker {
  display: none;
}

.page-about .about-fold__summary::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  flex: 0 0 auto;
}

.page-about .about-fold:nth-child(2) .about-fold__summary::before { background: var(--gold); }
.page-about .about-fold:nth-child(3) .about-fold__summary::before { background: var(--azure); }

.page-about .about-fold__summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-about .about-fold__body {
  padding: 0 18px 18px;
}

.page-about .about-fold__body p {
  margin: 0 0 10px;
  font-size: 0.9rem;
  line-height: 1.82;
  color: var(--silver);
}

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

.page-about .about-fold__link {
  color: var(--cyan);
  font-size: 0.86rem;
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 238, 0.35);
}

.page-about .about-fold__link:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 地域与联系 ---------- */
.page-about .about-region {
  display: grid;
  gap: clamp(22px, 3.5vw, 38px);
}

.page-about .about-region__list {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-region__row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-region__row dt {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--silver);
  text-transform: uppercase;
}

.page-about .about-region__row dd {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--white);
}

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

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

  .page-about .about-dials {
    gap: 12px;
  }
}

@media (min-width: 900px) {
  .page-about .about-scope {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .about-scope__item:nth-child(even) {
    margin-top: 20px;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 60px;
    align-items: start;
  }

  .page-about .about-cols {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-block__head {
    margin-bottom: 46px;
  }

  .page-about .about-region {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 48px;
    align-items: center;
  }

  .page-about .about-devices__row {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }

  .page-about .about-devices__row:hover {
    padding-left: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-dial,
  .page-about .about-crew,
  .page-about .about-scope__item,
  .page-about .about-devices__row,
  .page-about .about-toc__link,
  .page-about .about-road__item::before {
    transition: none;
  }

  .page-about .about-crew:hover,
  .page-about .about-scope__item:hover,
  .page-about .about-devices__row:hover {
    transform: none;
    padding-left: 0;
  }
}
<<<END>>>