/* ============================================================
   我们是谁 / about
   作用域：.page-about
   ============================================================ */

.page-about {
  --about-stack: clamp(48px, 8vw, 104px);
  --about-measure: 40rem;
  display: block;
  color: var(--ng-text);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  border-bottom: 1px solid var(--ng-line);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(123, 92, 255, .14), transparent 58%),
    radial-gradient(80% 70% at 0% 100%, rgba(34, 224, 200, .07), transparent 60%),
    var(--ng-ink);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
  padding-top: clamp(26px, 5vw, 52px);
  padding-bottom: clamp(30px, 5vw, 58px);
  align-items: center;
}

.page-about .about-hero__crumb {
  margin-bottom: clamp(16px, 3vw, 26px);
}

.page-about .about-hero__crumb .ng-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__crumb .ng-breadcrumb__item {
  font-size: 13px;
  line-height: 1.6;
  color: var(--ng-muted);
}

.page-about .about-hero__crumb .ng-breadcrumb__link {
  color: var(--ng-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--ng-t) var(--ng-ease), border-color var(--ng-t) var(--ng-ease);
}

.page-about .about-hero__crumb .ng-breadcrumb__link:hover,
.page-about .about-hero__crumb .ng-breadcrumb__link:focus-visible {
  color: var(--ng-teal);
  border-bottom-color: var(--ng-teal);
}

.page-about .about-hero__crumb .ng-breadcrumb__item + .ng-breadcrumb__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--ng-line);
}

.page-about .about-hero__no {
  margin: 0 0 14px;
  color: var(--ng-violet);
  letter-spacing: .2em;
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--ng-font-display);
  font-weight: 800;
  font-size: clamp(30px, 7vw, 58px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--ng-text);
  text-wrap: balance;
}

.page-about .about-hero__lede {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 34rem;
  font-size: clamp(15.5px, 1.6vw, 17.5px);
  line-height: 1.8;
  color: var(--ng-muted);
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: var(--ng-slab);
  border: 1px solid var(--ng-line);
  aspect-ratio: 16 / 10;
}

.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 42px;
  background: linear-gradient(to top right, var(--ng-ink) 49.5%, transparent 50%);
  pointer-events: none;
}

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

/* ---------- 页内索引 ---------- */

.page-about .about-index {
  border-bottom: 1px solid var(--ng-line);
  background: var(--ng-ink);
}

.page-about .about-index__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.page-about .about-index__label {
  margin: 0;
  color: var(--ng-muted);
}

.page-about .about-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-index__link {
  display: inline-block;
  padding: 6px 13px 6px 15px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--ng-text);
  text-decoration: none;
  background: var(--ng-slab);
  border-left: 2px solid var(--ng-teal);
  transition: background var(--ng-t) var(--ng-ease), color var(--ng-t) var(--ng-ease);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  background: #1C2740;
  color: var(--ng-teal);
}

/* ---------- 区块骨架 ---------- */

.page-about .about-block {
  padding: var(--about-stack) 0;
}

.page-about .about-block + .about-block {
  padding-top: 0;
}

.page-about .about-block__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-about .about-block__no {
  margin: 0;
  color: var(--ng-violet);
  letter-spacing: .2em;
}

.page-about .about-block__title {
  margin: 0;
  font-family: var(--ng-font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.8vw, 38px);
  line-height: 1.14;
  letter-spacing: -.015em;
  color: var(--ng-text);
  max-width: 24em;
}

/* ---------- 01 品牌自述 ---------- */

.page-about .about-story__prose {
  max-width: var(--about-measure);
}

.page-about .about-segments {
  list-style: none;
  margin: clamp(30px, 4.5vw, 52px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--ng-line);
}

.page-about .about-segments__item {
  padding: 20px 0;
  border-bottom: 1px solid var(--ng-line);
}

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

.page-about .about-segments__key {
  margin: 0 0 8px;
  font-family: var(--ng-font-mono);
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--ng-teal);
}

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

/* ---------- 02 版本演进时间轴 ---------- */

.page-about .about-tl-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 4vw, 38px);
}

.page-about .about-tl-aside {
  margin: 0;
  font-family: var(--ng-font-mono);
  line-height: 2;
  letter-spacing: .12em;
  color: var(--ng-muted);
}

.page-about .about-tl {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--ng-line) 0%, var(--ng-line) 72%, rgba(255, 138, 61, .55) 100%);
}

.page-about .about-tl__node {
  position: relative;
  padding-left: 34px;
  padding-bottom: clamp(34px, 6vw, 60px);
}

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

.page-about .about-tl__node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 9px;
  height: 9px;
  margin-left: -4px;
  border-radius: 50%;
  background: var(--ng-ink);
  border: 1px solid var(--ng-line);
}

.page-about .about-tl__node--now::before {
  background: var(--ng-orange);
  border-color: var(--ng-orange);
  box-shadow: 0 0 0 4px rgba(255, 138, 61, .16);
}

.page-about .about-tl__year {
  margin: 0 0 6px;
  font-family: var(--ng-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ng-muted);
}

.page-about .about-tl__node--now .about-tl__year {
  color: var(--ng-orange);
}

.page-about .about-tl__title {
  margin: 0 0 8px;
  font-family: var(--ng-font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.35;
  letter-spacing: -.005em;
  color: var(--ng-text);
}

.page-about .about-tl__text {
  margin: 0;
  max-width: var(--about-measure);
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--ng-muted);
}

.page-about .about-tl__more {
  margin-top: 14px;
  max-width: var(--about-measure);
  border-top: 1px dashed var(--ng-line);
}

.page-about .about-tl__more-summary {
  display: inline-block;
  padding: 10px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ng-teal);
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-tl__more-summary::before {
  content: "＋ ";
  font-family: var(--ng-font-mono);
}

.page-about .about-tl__more[open] .about-tl__more-summary::before {
  content: "－ ";
}

.page-about .about-tl__more-text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ng-muted);
}

/* ---------- 03 团队与分工 ---------- */

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 40px);
  align-items: center;
}

.page-about .about-team__figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: var(--ng-slab);
  border: 1px solid var(--ng-line);
  border-left: 3px solid var(--ng-violet);
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.page-about .about-team__cap {
  padding: 10px 14px;
  font-family: var(--ng-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ng-muted);
  border-top: 1px solid var(--ng-line);
}

.page-about .about-team__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ng-muted);
}

.page-about .about-team__cards {
  list-style: none;
  margin: clamp(28px, 4.5vw, 48px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-team__card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 20px 18px 20px 20px;
  background: var(--ng-slab);
  border: 1px solid var(--ng-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ng-cut)), calc(100% - var(--ng-cut)) 100%, 0 100%);
  transition: border-color var(--ng-t) var(--ng-ease), background var(--ng-t) var(--ng-ease);
}

.page-about .about-team__card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 3px;
  height: 22px;
  background: var(--ng-teal);
}

.page-about .about-team__card:hover,
.page-about .about-team__card:focus-within {
  background: #182238;
  border-color: rgba(34, 224, 200, .45);
}

.page-about .about-team__card-name {
  margin: 0 0 10px;
  font-family: var(--ng-font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
  color: var(--ng-text);
}

.page-about .about-team__card-desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ng-muted);
}

.page-about .about-team__card-more {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ng-teal);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 200ms var(--ng-ease), opacity 180ms var(--ng-ease), margin-top 200ms var(--ng-ease);
}

.page-about .about-team__card:hover .about-team__card-more,
.page-about .about-team__card:focus-within .about-team__card-more {
  max-height: 6em;
  opacity: 1;
  margin-top: 10px;
}

.page-about .about-team__card-link {
  margin-top: auto;
  padding-top: 14px;
  font-size: 13px;
  color: var(--ng-muted);
  text-decoration: none;
  border-bottom: 1px solid var(--ng-line);
  align-self: flex-start;
  transition: color var(--ng-t) var(--ng-ease), border-color var(--ng-t) var(--ng-ease);
}

.page-about .about-team__card-link:hover,
.page-about .about-team__card-link:focus-visible {
  color: var(--ng-teal);
  border-bottom-color: var(--ng-teal);
}

/* ---------- 04 维护节奏 ---------- */

.page-about .about-cadence {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}

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

.page-about .about-cadence__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 16px 0;
  border-top: 1px solid var(--ng-line);
}

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

.page-about .about-cadence__row dt {
  font-family: var(--ng-font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--ng-teal);
}

.page-about .about-cadence__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--ng-text);
}

.page-about .about-cadence__figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: var(--ng-slab);
  border: 1px solid var(--ng-line);
}

.page-about .about-cadence__figure::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--ng-teal), var(--ng-violet));
  z-index: 1;
}

.page-about .about-cadence__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .about-cadence__cap {
  padding: 10px 14px;
  font-family: var(--ng-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ng-muted);
  border-top: 1px solid var(--ng-line);
}

/* ---------- 05 对外沟通 ---------- */

.page-about .about-block--reach {
  padding-bottom: clamp(56px, 9vw, 120px);
}

.page-about .about-reach__prose {
  max-width: var(--about-measure);
}

.page-about .about-reach__links {
  list-style: none;
  margin: clamp(24px, 3.5vw, 36px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-about .about-reach__link {
  display: block;
  padding: 13px 16px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--ng-text);
  text-decoration: none;
  background: var(--ng-slab);
  border-left: 3px solid var(--ng-violet);
  transition: background var(--ng-t) var(--ng-ease), border-color var(--ng-t) var(--ng-ease), color var(--ng-t) var(--ng-ease);
}

.page-about .about-reach__link:hover,
.page-about .about-reach__link:focus-visible {
  background: #1C2740;
  border-left-color: var(--ng-teal);
  color: var(--ng-teal);
}

.page-about .about-reach__legal {
  margin: clamp(22px, 3vw, 34px) 0 0;
  font-family: var(--ng-font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ng-muted);
}

/* ---------- 中屏与桌面 ---------- */

@media (min-width: 620px) {
  .page-about .about-team__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-cadence__row {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 4px 20px;
    align-items: baseline;
  }
}

@media (min-width: 780px) {
  .page-about .about-segments {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-segments__item {
    padding: 22px 26px;
    border-bottom: 0;
    border-left: 1px solid var(--ng-line);
  }

  .page-about .about-segments__item:first-child {
    border-left: 0;
    padding-left: 0;
  }

  .page-about .about-segments__item:last-child {
    padding-right: 0;
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(32px, 5vw, 72px);
  }

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

  .page-about .about-tl-layout {
    grid-template-columns: minmax(150px, 1fr) minmax(0, 2.5fr);
    gap: clamp(40px, 8vw, 120px);
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: clamp(30px, 5vw, 60px);
  }

  .page-about .about-cadence {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
  }
}

@media (min-width: 1040px) {
  .page-about .about-team__cards {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* 触屏设备没有悬停，补充说明直接呈现 */
@media (hover: none) {
  .page-about .about-team__card-more {
    max-height: none;
    opacity: 1;
    margin-top: 10px;
  }
}

/* 减少动态偏好 */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-index__link,
  .page-about .about-team__card,
  .page-about .about-team__card-more,
  .page-about .about-team__card-link,
  .page-about .about-reach__link,
  .page-about .about-hero__crumb .ng-breadcrumb__link {
    transition: none;
  }
}
<<<END>>>