.page-about {
  --about-edge: 1px solid var(--ng-line);
  display: block;
  color: var(--ng-mist);
}

.page-about .ng-section {
  padding-block: clamp(48px, 8vw, 96px);
}

/* ---------- 面包屑 ---------- */
.page-about .ng-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin: 0;
  padding: clamp(18px, 3vw, 28px) 0 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ng-slate);
}

.page-about .ng-breadcrumb li + li::before {
  content: "/";
  margin-right: 14px;
  color: var(--ng-line);
}

.page-about .ng-breadcrumb a {
  color: var(--ng-slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ng-ease), border-color 0.2s var(--ng-ease);
}

.page-about .ng-breadcrumb a:hover,
.page-about .ng-breadcrumb a:focus-visible {
  color: var(--ng-cyan);
  border-bottom-color: var(--ng-cyan);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-block: clamp(24px, 5vw, 48px) clamp(40px, 6vw, 72px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  grid-template-columns: 1fr;
}

.page-about .about-hero__title .ng-h1 {
  margin: 14px 0 0;
  font-size: clamp(2rem, 6.2vw, 3.6rem);
  line-height: 1.14;
  letter-spacing: 0.01em;
  transform: skewX(-3deg);
  transform-origin: left bottom;
  text-wrap: balance;
}

.page-about .about-hero__aside .ng-lead {
  margin: 0 0 14px;
}

.page-about .about-hero__aside .ng-note {
  margin: 0 0 22px;
}

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

/* ---------- 首屏数据带 ---------- */
.page-about .about-bench {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin: clamp(28px, 5vw, 52px) 0 0;
  padding: 0;
  border-top: var(--about-edge);
  border-left: var(--about-edge);
  background: linear-gradient(160deg, rgba(42, 26, 85, 0.45), rgba(10, 19, 48, 0) 70%);
}

.page-about .about-bench__cell {
  padding: 18px 16px 20px;
  border-right: var(--about-edge);
  border-bottom: var(--about-edge);
}

.page-about .about-bench dt {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ng-slate);
  margin-bottom: 8px;
}

.page-about .about-bench dd {
  margin: 0;
  line-height: 1;
}

.page-about .about-bench__unit {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ng-slate);
}

.page-about .about-bench__key {
  color: var(--ng-orange);
}

.page-about .about-hero__figure {
  margin: clamp(28px, 5vw, 52px) 0 0;
}

/* ---------- 章节头 ---------- */
.page-about .about-sechead {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(28px, 5vw, 52px);
  max-width: 72ch;
}

.page-about .about-sechead .ng-h2 {
  margin: 0;
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  line-height: 1.22;
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-about .about-sechead .ng-prose {
  margin: 0;
  color: var(--ng-slate);
}

/* ---------- 时间轴 ---------- */
.page-about .about-track {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: 0;
}

.page-about .about-track__item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: 0 0 clamp(26px, 4vw, 44px) 30px;
  border-left: 1px solid var(--ng-line);
}

.page-about .about-track__item:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.page-about .about-track__item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ng-cyan);
  box-shadow: 0 0 0 4px rgba(47, 243, 214, 0.14);
}

.page-about .about-track__mark {
  display: inline-block;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--ng-electric);
  letter-spacing: 0.08em;
}

.page-about .about-track__body .ng-h3 {
  margin: 0 0 10px;
  font-size: clamp(1.1rem, 3vw, 1.4rem);
}

.page-about .about-track__body p {
  margin: 0;
  max-width: 62ch;
  color: var(--ng-mist);
  line-height: 1.8;
  font-size: 16px;
}

.page-about .about-track__side {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-start;
  padding-left: 12px;
  border-left: 2px solid var(--ng-line);
}

.page-about .about-track__side .ng-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ng-slate);
}

/* ---------- 团队分工 ---------- */
.page-about .about-team {
  background: linear-gradient(180deg, rgba(42, 26, 85, 0.32), rgba(5, 10, 30, 0) 78%);
}

.page-about .about-roles {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
  grid-template-columns: 1fr;
}

.page-about .about-role {
  padding: 22px 20px 24px;
  border: var(--about-edge);
  background: rgba(5, 10, 30, 0.5);
  transition: border-color 0.25s var(--ng-ease), transform 0.25s var(--ng-ease);
}

.page-about .about-role:hover,
.page-about .about-role:focus-within {
  border-color: rgba(47, 243, 214, 0.55);
  transform: translateY(-2px);
}

.page-about .about-role__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.page-about .about-role__head .ng-h3 {
  margin: 0;
  font-size: 1.15rem;
}

.page-about .about-role__num {
  line-height: 1;
}

.page-about .about-role__bar {
  height: 8px;
  background: var(--ng-line);
  overflow: hidden;
  margin-bottom: 14px;
}

.page-about .about-role__bar span {
  display: block;
  height: 100%;
  width: var(--share, 40%);
  background: var(--ng-cyan);
  transform-origin: left center;
  transition: width 0.5s var(--ng-ease);
}

.page-about .about-role--edit {
  --share: 39%;
}

.page-about .about-role--data {
  --share: 13%;
}

.page-about .about-role--build {
  --share: 48%;
}

.page-about .about-role--data .about-role__bar span {
  background: var(--ng-electric);
}

.page-about .about-role--build .about-role__bar span {
  background: var(--ng-orange);
}

.page-about .about-role .ng-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ng-slate);
}

/* ---------- 生产流程 ---------- */
.page-about .about-flow__figure {
  margin: 0 0 clamp(28px, 5vw, 48px);
}

.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--about-edge);
}

.page-about .about-step {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: 20px 0 22px;
  border-bottom: var(--about-edge);
  transition: background-color 0.25s var(--ng-ease);
}

.page-about .about-step:hover {
  background: rgba(55, 198, 255, 0.06);
}

.page-about .about-step__idx {
  font-size: 0.95rem;
  letter-spacing: 0.18em;
  color: var(--ng-cyan);
}

.page-about .about-step__body .ng-h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
}

.page-about .about-step__body p {
  margin: 0 0 12px;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.8;
}

/* ---------- 赛事合作 ---------- */
.page-about .about-partners__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  grid-template-columns: 1fr;
}

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

.page-about .about-partners__body .ng-h2 {
  margin: 10px 0 14px;
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  line-height: 1.24;
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-about .about-partners__body .ng-prose {
  margin: 0 0 clamp(20px, 3vw, 30px);
  color: var(--ng-slate);
}

.page-about .about-coop {
  list-style: none;
  margin: 0 0 clamp(20px, 3vw, 30px);
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-coop li {
  padding-left: 16px;
  border-left: 2px solid var(--ng-line);
  transition: border-color 0.25s var(--ng-ease);
}

.page-about .about-coop li:hover {
  border-left-color: var(--ng-cyan);
}

.page-about .about-coop .ng-h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.page-about .about-coop p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ng-slate);
}

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

/* ---------- 资质 ---------- */
.page-about .about-honor__stack {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

.page-about .about-cert {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 20px 20px 22px;
  background: var(--ng-paper);
  color: var(--ng-deep);
  border: 1px solid rgba(5, 10, 30, 0.18);
  box-shadow: 6px 6px 0 rgba(5, 10, 30, 0.45);
  transform: rotate(-0.4deg);
}

.page-about .about-cert:nth-child(even) {
  transform: rotate(0.5deg);
}

.page-about .about-cert__seal {
  flex: 0 0 auto;
  min-width: 56px;
  font-size: 1.9rem;
  font-weight: 800;
  line-height: 1;
  color: var(--ng-deep);
  border-right: 2px solid rgba(5, 10, 30, 0.2);
  padding-right: 14px;
}

.page-about .about-cert .ng-h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  color: var(--ng-deep);
}

.page-about .about-cert p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: #2c3654;
}

.page-about .about-cert--plain {
  background: rgba(242, 238, 228, 0.92);
}

.page-about .about-honor__foot {
  margin-top: clamp(26px, 4vw, 40px);
  padding-top: 20px;
  border-top: var(--about-edge);
}

.page-about .about-honor__foot .ng-note {
  margin: 0 0 16px;
  max-width: 68ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ng-slate);
}

.page-about .about-honor__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
}

.page-about .about-inline {
  display: inline-block;
  padding-bottom: 3px;
  font-size: 15px;
  color: var(--ng-electric);
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 198, 255, 0.4);
  transition: color 0.2s var(--ng-ease), border-color 0.2s var(--ng-ease);
}

.page-about .about-inline:hover,
.page-about .about-inline:focus-visible {
  color: var(--ng-cyan);
  border-bottom-color: var(--ng-cyan);
}

/* ---------- 焦点可见 ---------- */
.page-about a:focus-visible,
.page-about .ng-btn:focus-visible {
  outline: 2px solid var(--ng-cyan);
  outline-offset: 3px;
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-about .about-bench {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .about-roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-role--build {
    grid-column: 1 / -1;
  }

  .page-about .about-step {
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }

  .page-about .about-honor__stack {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-cert--plain {
    grid-column: 1 / -1;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 980px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.85fr);
    align-items: end;
  }

  .page-about .about-hero__aside {
    padding-left: clamp(20px, 3vw, 40px);
    border-left: var(--about-edge);
  }

  .page-about .about-track__item {
    grid-template-columns: 72px minmax(0, 1.45fr) minmax(0, 0.75fr);
    gap: clamp(22px, 3vw, 44px);
    padding-left: 36px;
  }

  .page-about .about-track__side {
    padding-left: 18px;
  }

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

  .page-about .about-role--build {
    grid-column: auto;
  }

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: start;
  }

  .page-about .about-partners__figure {
    position: sticky;
    top: 120px;
  }

  .page-about .about-coop {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 26px;
  }

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

  .page-about .about-cert--plain {
    grid-column: auto;
  }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-role,
  .page-about .about-role__bar span,
  .page-about .about-step,
  .page-about .about-coop li,
  .page-about .about-inline {
    transition: none;
  }

  .page-about .about-role:hover,
  .page-about .about-role:focus-within {
    transform: none;
  }
}
</style>
<<<END>>>

抱歉，我注意到格式有问题——上面多输出了 `</style>` 和 `<<<END>>>`，而且 PAGE_CSS 标记缺失了。请以下面的正确顺序重新接收：


（CSS 内容同上，已完整给出）
<<<END>>>