.page-about {
  --about-rail-w: 288px;
  --about-card-pad: 22px;
  position: relative;
  overflow-x: clip;
  background: var(--c-night);
  color: var(--c-mist);
  font-family: var(--font-cn);
}

.page-about a {
  color: inherit;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: calc(var(--header-h) + 36px) 0 44px;
  background:
    radial-gradient(120% 85% at 12% 0%, rgba(255, 61, 20, 0.22), transparent 62%),
    radial-gradient(90% 70% at 96% 6%, rgba(47, 210, 196, 0.12), transparent 60%),
    linear-gradient(180deg, #081527 0%, #061020 100%);
  border-bottom: var(--line);
}

.page-about .about-hero__texture {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.55;
  background-image:
    radial-gradient(1.6px 1.6px at 14% 24%, rgba(241, 245, 250, 0.55), transparent 100%),
    radial-gradient(1.2px 1.2px at 46% 62%, rgba(241, 245, 250, 0.35), transparent 100%),
    radial-gradient(1.4px 1.4px at 72% 18%, rgba(241, 245, 250, 0.45), transparent 100%),
    radial-gradient(1px 1px at 88% 74%, rgba(241, 245, 250, 0.3), transparent 100%),
    radial-gradient(1px 1px at 28% 88%, rgba(241, 245, 250, 0.28), transparent 100%);
  background-size: 320px 320px;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
}

.page-about .about-hero__title {
  margin: 16px 0 0;
  font-size: clamp(32px, 5.4vw, 54px);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--c-mist);
}

.page-about .about-hero__lead {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-slate);
}

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

.page-about .about-hero__visual {
  min-width: 0;
}

.page-about .about-hero__media {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card), var(--glow-ember);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 5;
  filter: saturate(1.05) contrast(1.05);
}

/* ---------- 规模数字带 ---------- */
.page-about .about-band {
  background: linear-gradient(180deg, rgba(17, 35, 56, 0.92), rgba(8, 21, 39, 0.95));
  border-bottom: var(--line);
}

.page-about .about-band__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: var(--line);
  border-left: var(--line);
}

.page-about .about-band .stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 16px;
  border-right: var(--line);
  border-bottom: var(--line);
}

.page-about .about-band .stat:last-child {
  grid-column: span 2;
}

.page-about .about-band .stat__value {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-mist);
}

.page-about .about-band .stat__value--gold {
  color: var(--c-gold);
}

.page-about .about-band .stat__label {
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--c-slate);
}

/* ---------- 分屏主体 ---------- */
.page-about .about-body {
  padding: 44px 0 8px;
}

.page-about .about-body__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-rail__sticky {
  position: relative;
}

.page-about .about-rail__label {
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-ember);
  font-weight: 700;
}

.page-about .about-rail__track {
  position: absolute;
  left: 5px;
  top: 46px;
  bottom: 108px;
  width: 2px;
  height: auto;
  display: none;
}

.page-about .about-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-about .about-rail__item {
  flex: 0 0 auto;
}

.page-about .about-rail__node {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: var(--line);
  border-radius: 999px;
  text-decoration: none;
  color: var(--c-slate);
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-about .about-rail__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1px solid var(--c-ridge);
  background: var(--c-night);
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-about .about-rail__num {
  display: none;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--c-ridge);
}

.page-about .about-rail__text {
  font-size: 13px;
  letter-spacing: 0.02em;
}

.page-about .about-rail__node:hover,
.page-about .about-rail__node:focus-visible {
  color: var(--c-mist);
  border-color: var(--c-ember);
}

.page-about .about-rail__node[aria-current="true"] {
  color: var(--c-mist);
  border-color: var(--c-ember);
  background: rgba(255, 61, 20, 0.1);
}

.page-about .about-rail__node[aria-current="true"] .about-rail__dot {
  background: var(--c-ember);
  border-color: var(--c-ember);
  box-shadow: 0 0 0 4px rgba(255, 61, 20, 0.2);
}

.page-about .about-rail__stats {
  margin-top: 22px;
  padding: 18px;
  border: var(--line);
  border-radius: var(--r-md);
  background: rgba(17, 35, 56, 0.6);
}

.page-about .about-rail__stats-title {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--c-slate);
}

.page-about .about-rail__stats-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-mist);
}

.page-about .about-rail__stats-num {
  font-weight: 800;
  color: var(--c-gold);
  margin-right: 4px;
}

/* ---------- 叙事区块 ---------- */
.page-about .about-sec {
  padding: 34px 0 38px;
  border-bottom: var(--line-soft);
}

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

.page-about .about-sec:last-child {
  border-bottom: 0;
}

.page-about .about-sec__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .about-sec__idx {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--c-ember);
}

.page-about .about-sec__title {
  margin: 0;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--c-mist);
}

.page-about .rule--flow {
  margin: 16px 0 20px;
}

.page-about .about-sec__lead {
  margin: 0 0 24px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-slate);
}

.page-about .about-sec__lead a,
.page-about .about-team__role a {
  color: var(--c-gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 179, 32, 0.5);
}

.page-about .about-sec__lead a:hover,
.page-about .about-team__role a:hover {
  border-bottom-color: var(--c-gold);
}

/* ---------- 赛前/赛中/赛后 ---------- */
.page-about .about-pillars {
  display: grid;
  gap: 14px;
}

.page-about .about-pillar {
  padding: var(--about-card-pad);
  background: var(--c-panel);
  border: var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-card);
}

.page-about .about-pillar__title {
  margin: 12px 0 8px;
  font-size: 18px;
  font-weight: 600;
  color: var(--c-mist);
}

.page-about .about-pillar p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-slate);
}

/* ---------- 成长阶段 ---------- */
.page-about .about-stages {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-stage {
  display: grid;
  gap: 10px;
  padding: 20px 0;
  border-top: var(--line-soft);
}

.page-about .about-stages .about-stage:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-stage__v {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--c-gold);
  padding-left: 12px;
  border-left: 2px solid var(--c-ember);
}

.page-about .about-stage__title {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 600;
  color: var(--c-mist);
}

.page-about .about-stage__points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-about .about-stage__points li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-slate);
}

.page-about .about-stage__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  background: var(--c-jade);
  transform: rotate(45deg);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 22px;
}

.page-about .about-team__frame {
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-about .about-team__frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 7 / 4;
}

.page-about .about-team__roles {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
}

.page-about .about-team__role {
  padding: 18px 20px;
  background: rgba(17, 35, 56, 0.78);
  border: var(--line);
  border-left: 2px solid var(--c-ember);
  border-radius: var(--r-md);
}

.page-about .about-team__role-title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--c-mist);
}

.page-about .about-team__role p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--c-slate);
}

/* ---------- 数据能力 ---------- */
.page-about .about-data {
  display: grid;
  gap: 18px;
}

.page-about .about-data__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: var(--line);
  border-left: var(--line);
}

.page-about .about-data__cell {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 14px;
  border-right: var(--line);
  border-bottom: var(--line);
  background: rgba(17, 35, 56, 0.55);
}

.page-about .about-data__num {
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--c-gold);
}

.page-about .about-data__label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-slate);
}

.page-about .about-sync {
  padding: 22px;
  border: var(--line);
  border-radius: var(--r-md);
  background:
    linear-gradient(120deg, rgba(255, 61, 20, 0.14), transparent 58%),
    var(--c-panel);
  box-shadow: var(--shadow-card);
}

.page-about .about-sync__k {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--c-slate);
}

.page-about .about-sync__v {
  margin: 8px 0 12px;
  font-size: clamp(28px, 4.4vw, 42px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--c-gold);
}

.page-about .about-sync__note {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--c-slate);
}

/* ---------- 服务标准 ---------- */
.page-about .about-std {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-about .about-std__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 18px;
  border: var(--line);
  border-radius: var(--r-md);
  background: rgba(8, 21, 39, 0.6);
}

.page-about .about-std__no {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: rgba(255, 61, 20, 0.85);
}

.page-about .about-std__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 600;
  color: var(--c-mist);
}

.page-about .about-std__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--c-slate);
}

/* ---------- 合作 ---------- */
.page-about .about-partners {
  display: grid;
  gap: 22px;
}

.page-about .about-partners__list {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-about .about-partners__item {
  padding: 16px 18px;
  border-radius: var(--r-md);
  border: var(--line);
  background: var(--c-panel);
}

.page-about .about-partners__item h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--c-mist);
}

.page-about .about-partners__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--c-slate);
}

.page-about .about-partners__frame {
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-about .about-partners__frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 12 / 7;
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  margin-top: 32px;
  padding: 40px 0 52px;
  border-top: var(--line);
  background:
    radial-gradient(80% 120% at 82% 0%, rgba(255, 61, 20, 0.18), transparent 60%),
    linear-gradient(180deg, rgba(17, 35, 56, 0.85), rgba(4, 9, 15, 0.95));
}

.page-about .about-next__lead {
  margin: 0 0 20px;
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 600;
  color: var(--c-mist);
}

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

.page-about .about-next__link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px;
  text-decoration: none;
  border: var(--line);
  border-radius: var(--r-md);
  background: rgba(8, 21, 39, 0.7);
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  border-color: var(--c-ember);
  background: rgba(255, 61, 20, 0.1);
}

.page-about .about-next__k {
  font-size: 17px;
  font-weight: 600;
  color: var(--c-mist);
  letter-spacing: 0.03em;
}

.page-about .about-next__d {
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-slate);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 700px) {
  .page-about .about-hero {
    padding: calc(var(--header-h) + 52px) 0 60px;
  }

  .page-about .about-band__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-band .stat:last-child {
    grid-column: auto;
  }

  .page-about .about-band .stat {
    padding: 26px 22px;
  }

  .page-about .about-pillars {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .about-stage {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 22px;
    padding: 24px 0;
  }

  .page-about .about-data__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-team__frame img {
    aspect-ratio: 16 / 9;
  }

  .page-about .about-next__links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 桌面分屏 ---------- */
@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 56px;
    align-items: center;
  }

  .page-about .about-hero__media img {
    aspect-ratio: 4 / 5;
  }

  .page-about .about-partners {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 32px;
    align-items: start;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 32px;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-about .about-body {
    padding: 56px 0 12px;
  }

  .page-about .about-body__grid {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-rail__sticky {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-about .about-rail__track {
    display: block;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0;
  }

  .page-about .about-rail__node {
    display: grid;
    grid-template-columns: 22px 34px minmax(0, 1fr);
    gap: 10px;
    padding: 11px 10px;
    border: 1px solid transparent;
    border-radius: var(--r-sm);
    white-space: normal;
  }

  .page-about .about-rail__num {
    display: inline;
  }

  .page-about .about-rail__text {
    font-size: 14px;
  }

  .page-about .about-rail__node:hover,
  .page-about .about-rail__node:focus-visible {
    background: rgba(17, 35, 56, 0.7);
  }

  .page-about .about-rail__node[aria-current="true"] {
    border-color: transparent;
    background: rgba(255, 61, 20, 0.08);
  }

  .page-about .about-rail__node[aria-current="true"] .about-rail__num {
    color: var(--c-ember);
  }
}

@media (min-width: 1240px) {
  .page-about .about-band__grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .about-sec {
    padding: 44px 0 48px;
  }

  .page-about .about-std__item {
    grid-template-columns: 56px minmax(0, 1fr);
    padding: 20px 22px;
  }
}
<<<END>>>