.page-about {
  --about-gap: clamp(20px, 3vw, 48px);
  background: var(--ink);
  color: var(--text);
  padding-bottom: clamp(40px, 6vw, 80px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(120% 150% at 86% 8%, rgba(0, 229, 208, 0.14), transparent 58%),
    radial-gradient(90% 120% at 6% 100%, rgba(245, 185, 66, 0.09), transparent 62%),
    linear-gradient(180deg, var(--ink-2), var(--ink));
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 84px 100%;
  opacity: 0.16;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 4vw, 44px);
  padding-block: clamp(34px, 6vw, 78px);
}

.page-about .about-hero h1 {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(30px, 4.6vw, 54px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.025em;
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--text);
  opacity: 0.88;
}

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

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  align-self: end;
}

.page-about .about-kpi {
  display: grid;
  gap: 8px;
  padding: 16px 14px;
  background: var(--ink-2);
  transition: background var(--t-fast) var(--ease);
}

.page-about .about-kpi__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
  transition: transform var(--t-fast) var(--ease);
}

.page-about .about-kpi__label {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--muted);
}

@media (hover: hover) {
  .page-about .about-kpi:hover {
    background: var(--panel);
  }
  .page-about .about-kpi:hover .about-kpi__num {
    transform: translateY(-2px);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: 7fr 5fr;
    align-items: end;
    gap: 56px;
  }
}

/* ---------- 页面骨架 ---------- */
.page-about .about-shell {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
  padding-block: clamp(24px, 3vw, 40px) 0;
}

.page-about .about-rail {
  order: -1;
  border: 1px solid var(--line-soft);
  background: var(--ink-2);
  padding: 12px 14px 14px;
}

.page-about .about-rail__title {
  margin: 0 0 10px;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .about-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-rail__link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 12px;
  border: 1px solid var(--line-soft);
  color: var(--muted);
  text-decoration: none;
  font-size: 13.5px;
  white-space: nowrap;
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-about .about-rail__link:hover {
  border-color: var(--cyan);
  color: var(--text);
}

.page-about .about-rail__num {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--gold);
}

.page-about [data-rail-link].is-active,
.page-about [data-rail-link][aria-current="true"] {
  border-color: var(--gold);
  background: var(--cyan-wash);
  color: var(--text);
}

.page-about .about-rail__foot {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-rail__foot .btn {
  width: 100%;
  justify-content: center;
}

@media (min-width: 1080px) {
  .page-about .about-shell {
    grid-template-columns: minmax(0, 1fr) 236px;
    align-items: start;
    gap: clamp(32px, 4vw, 56px);
  }
  .page-about .about-rail {
    order: 0;
    position: sticky;
    top: 104px;
    align-self: start;
  }
  .page-about .about-rail__list {
    display: block;
    overflow: visible;
    padding: 0;
  }
  .page-about .about-rail__link {
    margin-bottom: 6px;
  }
}

/* ---------- 区块通用 ---------- */
.page-about .about-block {
  border-top: 1px solid var(--line-soft);
  padding-top: clamp(22px, 3vw, 34px);
  margin-top: clamp(32px, 4.5vw, 58px);
}

.page-about .about-block:first-child {
  margin-top: 0;
}

.page-about .about-block__head {
  max-width: 780px;
}

.page-about .about-block__head h2 {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(23px, 2.6vw, 34px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
}

.page-about .about-block__intro {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-block__media {
  margin: 26px 0 0;
  border: 1px solid var(--line-soft);
}

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

/* ---------- 时间轴 ---------- */
.page-about .about-axis {
  display: none;
}

.page-about .about-timeline {
  display: grid;
  gap: 1px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-node {
  background: var(--ink-2);
  border-top: 2px solid transparent;
  padding: 18px 16px 20px;
  transition: background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-about .about-node__year {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--gold);
  transition: transform var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-about .about-node__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
}

.page-about .about-node__text {
  margin: 0 0 12px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-node__delta {
  margin: 0;
  padding-left: 10px;
  border-left: 2px solid var(--line);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-about .about-node__delta b {
  display: block;
  margin-bottom: 2px;
  font-weight: 600;
  color: var(--cyan-soft);
}

@media (hover: hover) {
  .page-about .about-node:hover {
    background: var(--panel);
    border-top-color: var(--cyan);
  }
  .page-about .about-node:hover .about-node__year {
    transform: translateY(-2px);
    color: var(--cyan);
  }
  .page-about .about-node:hover .about-node__text {
    color: var(--text);
  }
  .page-about .about-node:hover .about-node__delta {
    border-left-color: var(--cyan);
    color: var(--text);
  }
}

@media (min-width: 880px) {
  .page-about .about-axis {
    display: block;
    width: 100%;
    height: auto;
    margin: 30px 0 0;
    overflow: visible;
  }
  .page-about .about-timeline {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    margin-top: 0;
  }
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: clamp(16px, 2vw, 24px);
  margin-top: 26px;
}

.page-about .about-team__cards {
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-role {
  background: var(--ink-2);
  border-top: 2px solid var(--line);
  padding: 20px 18px 22px;
  transition: background var(--t-fast) var(--ease);
}

.page-about .about-role:nth-child(1) {
  border-top-color: var(--cyan);
}

.page-about .about-role:nth-child(2) {
  border-top-color: var(--gold);
}

.page-about .about-role:nth-child(3) {
  border-top-color: var(--line);
}

.page-about .about-role__count {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 0 0 10px;
}

.page-about .about-role__num {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  color: var(--text);
}

.page-about .about-role__unit {
  font-size: 13px;
  color: var(--muted);
}

.page-about .about-role__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
}

.page-about .about-role__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--muted);
}

@media (hover: hover) {
  .page-about .about-role:hover {
    background: var(--panel);
  }
}

@media (min-width: 720px) {
  .page-about .about-team__cards {
    grid-template-columns: 1.4fr 1fr 0.9fr;
  }
}

@media (min-width: 960px) {
  .page-about .about-team {
    grid-template-columns: minmax(0, 1.65fr) minmax(240px, 1fr);
    align-items: start;
  }
}

/* ---------- 专题 ---------- */
.page-about .about-topics {
  display: grid;
  gap: 1px;
  margin-top: 26px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-topic {
  background: var(--ink-2);
  border-top: 2px solid var(--line);
  padding: 22px 20px 24px;
}

.page-about .about-topic:nth-child(1) {
  border-top-color: var(--cyan);
}

.page-about .about-topic:nth-child(2) {
  border-top-color: var(--gold);
}

.page-about .about-topic:nth-child(3) {
  border-top-color: var(--cyan-soft);
}

.page-about .about-topic__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--cyan);
}

.page-about .about-topic__name {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.page-about .about-topic__text {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-topic__link {
  margin: 0;
}

.page-about .about-topic__link a {
  font-size: 13.5px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 208, 0.4);
  padding-bottom: 2px;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

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

@media (min-width: 820px) {
  .page-about .about-topics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 流程 ---------- */
.page-about .about-flow {
  display: grid;
  gap: 0;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-step {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 16px;
  padding: 20px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-step:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-step__idx {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--gold);
}

.page-about .about-step__name {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.page-about .about-step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

@media (min-width: 760px) {
  .page-about .about-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-top: 1px solid var(--line-soft);
  }
  .page-about .about-step {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    padding: 24px 18px 26px;
    border-top: none;
    border-left: 1px solid var(--line-soft);
  }
  .page-about .about-step:first-child {
    border-left: none;
    padding-left: 0;
  }
  .page-about .about-step:last-child {
    border-bottom: none;
    padding-right: 0;
  }
  .page-about .about-step__idx {
    display: block;
    margin-bottom: 14px;
  }
}

/* ---------- 覆盖 ---------- */
.page-about .about-coverage {
  display: grid;
  gap: 1px;
  margin-top: 26px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-coverage__body {
  background: var(--panel);
  padding: clamp(22px, 3vw, 34px);
}

.page-about .about-coverage__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text);
}

.page-about .about-facts {
  display: grid;
  gap: 12px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-facts li {
  display: flex;
  gap: 12px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text);
  opacity: 0.92;
}

.page-about .about-facts li::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  margin-top: 8px;
  background: var(--cyan);
}

.page-about .about-coverage__media {
  margin: 0;
  background: var(--ink-2);
}

@media (min-width: 880px) {
  .page-about .about-coverage {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  }
  .page-about .about-coverage__media {
    height: 100%;
  }
  .page-about .about-coverage__media img {
    height: 100%;
  }
}

/* ---------- 行业认可 ---------- */
.page-about .about-awards {
  display: grid;
  gap: 1px;
  margin-top: 26px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-award {
  background: var(--ink-2);
  border-top: 2px solid var(--gold);
  padding: 22px 20px;
}

.page-about .about-award--wide {
  border-top-color: var(--cyan);
}

.page-about .about-award__year {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--gold);
}

.page-about .about-award__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-about .about-award__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

@media (min-width: 820px) {
  .page-about .about-awards {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.6fr);
  }
}

/* ---------- 收尾 ---------- */
.page-about .about-tail {
  margin-top: clamp(40px, 6vw, 76px);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background:
    linear-gradient(90deg, var(--cyan-wash), rgba(245, 185, 66, 0.06) 70%, transparent);
}

.page-about .about-tail__inner {
  display: grid;
  gap: 20px;
  padding-block: clamp(28px, 4vw, 46px);
}

.page-about .about-tail__text {
  margin: 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.8;
  color: var(--text);
}

.page-about .about-tail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 880px) {
  .page-about .about-tail__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 36px;
  }
}
<<<END>>>