.page-about {
  --ab-rail: 152px;
  --ab-trackpad: clamp(20px, 4vw, 36px);
  --ab-line-w: 2px;
}

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

.page-about .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-block: clamp(16px, 2.4vw, 26px) 0;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--fx-muted);
}

.page-about .breadcrumbs__item {
  color: var(--fx-muted);
  text-decoration: none;
}

.page-about .breadcrumbs__item:hover,
.page-about .breadcrumbs__item[aria-current="page"] {
  color: var(--fx-ink);
}

.page-about .breadcrumbs__sep {
  color: var(--fx-line);
}

.page-about .ab-textlink {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--fx-orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 90, 31, 0.42);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .ab-textlink:hover,
.page-about .ab-textlink:focus-visible {
  color: var(--fx-mint);
  border-color: rgba(38, 245, 194, 0.6);
}

/* ---------- 首屏 ---------- */

.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(24px, 4vw, 52px) clamp(36px, 6vw, 80px);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: -30% -12% auto -12%;
  height: 130%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(58% 48% at 76% 14%, rgba(255, 90, 31, 0.3), transparent 68%),
    radial-gradient(42% 42% at 10% 82%, rgba(38, 245, 194, 0.11), transparent 70%),
    linear-gradient(200deg, rgba(138, 46, 11, 0.34), transparent 55%);
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.2;
  background-image:
    linear-gradient(var(--fx-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--fx-line) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(72% 62% at 58% 32%, #000 0%, transparent 76%);
  mask-image: radial-gradient(72% 62% at 58% 32%, #000 0%, transparent 76%);
}

.page-about .ab-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 52px);
}

.page-about .ab-hero__copy h1 {
  font-family: var(--fx-serif);
  font-weight: 700;
  font-size: clamp(1.75rem, 5.4vw, 3.25rem);
  line-height: 1.16;
  letter-spacing: 0.01em;
  color: var(--fx-ink);
  margin: 12px 0 0;
  max-width: 18ch;
}

.page-about .ab-hero__copy .lead {
  margin-top: clamp(16px, 2.4vw, 24px);
  max-width: 46ch;
}

.page-about .ab-hero__note {
  margin-top: 14px;
  max-width: 46ch;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--fx-muted);
  padding-left: 14px;
  border-left: 2px solid rgba(38, 245, 194, 0.5);
}

.page-about .ab-hero__actions {
  margin-top: clamp(22px, 3vw, 32px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 20px;
}

.page-about .ab-hero__visual {
  position: relative;
  padding: 8px;
  background: linear-gradient(140deg, rgba(255, 90, 31, 0.92), rgba(138, 46, 11, 0.28) 46%, rgba(38, 245, 194, 0.42));
  clip-path: polygon(0 4%, 100% 0, 100% 96%, 0 100%);
}

.page-about .ab-hero__shot {
  margin: 0;
  aspect-ratio: 12 / 7;
  overflow: hidden;
  background: var(--fx-bg);
  clip-path: polygon(0 4%, 100% 0, 100% 96%, 0 100%);
}

.page-about .ab-hero__shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 我们做的事 ---------- */

.page-about .ab-do__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 56px);
}

.page-about .ab-do__copy .section__title {
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-about .ab-do__list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: ab-do;
}

.page-about .ab-do__item {
  position: relative;
  padding: 20px 0 20px 62px;
  border-top: 1px solid var(--fx-line);
}

.page-about .ab-do__item:last-child {
  border-bottom: 1px solid var(--fx-line);
}

.page-about .ab-do__item::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 26px;
  height: 2px;
  background: var(--fx-orange);
  opacity: 0.75;
}

.page-about .ab-do__idx {
  position: absolute;
  left: 0;
  top: 22px;
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1;
  color: var(--fx-orange);
  opacity: 0.6;
}

.page-about .ab-do__item-title {
  margin: 0 0 6px;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--fx-ink);
}

.page-about .ab-do__item-body {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.72;
  color: var(--fx-muted);
}

/* ---------- 时间线 ---------- */

.page-about .ab-line {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
  margin-top: clamp(24px, 3.5vw, 40px);
}

.page-about .ab-line__rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
}

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

.page-about .ab-line__year {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--fx-muted);
  background: var(--fx-glass);
  border: 1px solid var(--fx-line);
  border-radius: 999px;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-about .ab-line__year:hover,
.page-about .ab-line__year:focus-visible {
  color: var(--fx-ink);
  border-color: rgba(255, 90, 31, 0.65);
  background: rgba(255, 90, 31, 0.12);
}

.page-about .ab-line__track {
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--ab-trackpad);
  display: grid;
  gap: clamp(26px, 4vw, 46px);
  background-image: linear-gradient(180deg, var(--fx-orange) 0%, rgba(255, 90, 31, 0.35) 38%, var(--fx-line) 100%);
  background-repeat: no-repeat;
  background-size: var(--ab-line-w) 100%;
  background-position: 0 0;
}

.page-about .ab-line__node {
  position: relative;
  scroll-margin-top: 96px;
}

.page-about .ab-line__node::before {
  content: "";
  position: absolute;
  top: 0.42em;
  left: calc(-1 * var(--ab-trackpad) - 6px);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--fx-bg);
  border: 2px solid var(--fx-orange);
  box-shadow: 0 0 0 4px rgba(255, 90, 31, 0.14);
  transition: box-shadow 0.24s ease, border-color 0.24s ease;
}

.page-about .ab-line__node--now::before {
  border-color: var(--fx-mint);
  background: var(--fx-mint);
  box-shadow: 0 0 0 5px rgba(38, 245, 194, 0.2);
}

.page-about .ab-line__node:hover::before {
  box-shadow: 0 0 0 6px rgba(255, 90, 31, 0.2);
}

.page-about .ab-line__stamp {
  margin: 0 0 4px;
  font-family: var(--fx-mono);
  font-size: clamp(1.125rem, 3.4vw, 1.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--fx-orange);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-line__node--now .ab-line__stamp {
  color: var(--fx-mint);
}

.page-about .ab-line__title {
  margin: 0 0 8px;
  font-family: var(--fx-serif);
  font-size: clamp(1.0625rem, 2.6vw, 1.375rem);
  font-weight: 700;
  line-height: 1.35;
  color: var(--fx-ink);
}

.page-about .ab-line__body {
  margin: 0;
  max-width: 60ch;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--fx-text-soft);
}

.page-about .ab-line__art {
  margin: clamp(30px, 5vw, 56px) 0 0;
  position: relative;
  overflow: hidden;
  border-radius: var(--fx-radius);
  border: 1px solid var(--fx-line);
}

.page-about .ab-line__art img {
  width: 100%;
  height: auto;
  object-fit: cover;
  opacity: 0.72;
}

.page-about .ab-line__art::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(13, 16, 21, 0.1), rgba(13, 16, 21, 0.82) 72%);
  pointer-events: none;
}

.page-about .ab-line__art .media-frame__caption {
  position: absolute;
  left: clamp(14px, 3vw, 24px);
  bottom: clamp(12px, 2.4vw, 20px);
  right: clamp(14px, 3vw, 24px);
  z-index: 1;
  margin: 0;
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--fx-text-soft);
}

/* ---------- 横向数据条 ---------- */

.page-about .ab-strip-band {
  position: relative;
  margin-block: clamp(6px, 2vw, 18px);
  padding-block: clamp(24px, 4vw, 40px);
  background:
    linear-gradient(100deg, rgba(255, 90, 31, 0.16), rgba(13, 16, 21, 0) 42%, rgba(38, 245, 194, 0.09)),
    var(--fx-layer);
  border-block: 1px solid var(--fx-line);
  clip-path: polygon(0 6%, 100% 0, 100% 94%, 0 100%);
}

.page-about .ab-strip {
  display: flex;
  gap: clamp(10px, 2vw, 18px);
  list-style: none;
  margin: 0;
  padding: 4px 2px 8px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
}

.page-about .ab-strip__item {
  flex: 0 0 auto;
  scroll-snap-align: start;
  min-width: 158px;
  padding: 14px 18px;
  display: grid;
  gap: 6px;
  background: rgba(13, 16, 21, 0.72);
  border: 1px solid var(--fx-line);
  border-radius: var(--fx-radius-sm);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-about .ab-strip__item:hover {
  border-color: rgba(255, 90, 31, 0.55);
  transform: translateY(-3px);
}

.page-about .ab-strip__item .stat__value {
  font-family: var(--fx-mono);
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--fx-ink);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-strip__item .stat__label {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: none;
  color: var(--fx-muted);
}

/* ---------- 数据来源 ---------- */

.page-about .ab-src__head {
  max-width: 62ch;
}

.page-about .ab-src__grid {
  margin-top: clamp(24px, 3.5vw, 40px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.5vw, 40px);
}

.page-about .ab-src__figure {
  margin: 0;
  position: relative;
  overflow: hidden;
  border-radius: var(--fx-radius);
  border: 1px solid var(--fx-line);
  background: var(--fx-layer);
  clip-path: polygon(0 3%, 100% 0, 100% 100%, 0 97%);
}

.page-about .ab-src__figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .ab-src__cards {
  display: grid;
  gap: clamp(12px, 2vw, 18px);
}

.page-about .ab-src__card {
  position: relative;
  padding: clamp(18px, 2.6vw, 24px);
  transition: border-color 0.24s ease, transform 0.24s ease, background 0.24s ease;
}

.page-about .ab-src__card .tag {
  margin: 0 0 12px;
  display: inline-block;
}

.page-about .ab-src__card .card__body {
  margin: 8px 0 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--fx-text-soft);
}

.page-about .ab-src__more {
  margin: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--fx-muted);
  transition: max-height 0.32s ease, opacity 0.28s ease, margin-top 0.32s ease;
}

.page-about .ab-src__card:hover .ab-src__more,
.page-about .ab-src__card:focus-within .ab-src__more,
.page-about .ab-src__card:focus .ab-src__more {
  max-height: 220px;
  opacity: 1;
  margin-top: 12px;
}

.page-about .ab-src__card:hover,
.page-about .ab-src__card:focus-within,
.page-about .ab-src__card:focus {
  border-color: rgba(255, 90, 31, 0.6);
  transform: translateY(-3px);
}

.page-about .ab-src__check {
  margin-top: clamp(24px, 3.5vw, 40px);
  padding: clamp(20px, 3vw, 32px);
  display: grid;
  gap: clamp(18px, 3vw, 32px);
  border-top: 1px solid var(--fx-line);
  border-bottom: 1px solid var(--fx-line);
  background: linear-gradient(120deg, rgba(38, 245, 194, 0.07), rgba(13, 16, 21, 0) 60%);
}

.page-about .ab-src__check-title {
  margin: 0 0 10px;
  font-family: var(--fx-serif);
  font-size: clamp(1.0625rem, 2.4vw, 1.25rem);
  font-weight: 700;
  color: var(--fx-ink);
}

.page-about .ab-src__check-text p {
  margin: 0;
  max-width: 62ch;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--fx-text-soft);
}

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

.page-about .ab-src__facts li {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--fx-line);
}

.page-about .ab-src__facts li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .ab-src__facts strong {
  font-family: var(--fx-mono);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--fx-mint);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.page-about .ab-src__facts span {
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--fx-muted);
}

/* ---------- 团队 ---------- */

.page-about .ab-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
}

.page-about .ab-team__copy .section__title {
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-about .ab-team__copy .prose p + p {
  margin-top: 16px;
}

.page-about .ab-team__panel {
  padding: clamp(22px, 3vw, 30px);
  align-self: start;
}

.page-about .ab-team__panel-label {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fx-muted);
}

.page-about .ab-team__big {
  margin: 10px 0 18px;
  font-family: var(--fx-mono);
  font-size: clamp(2.75rem, 9vw, 4rem);
  font-weight: 800;
  line-height: 1;
  color: var(--fx-ink);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-team__unit {
  font-size: 1.25rem;
  margin-left: 6px;
  color: var(--fx-muted);
}

.page-about .ab-team__bar {
  height: 8px;
  border-radius: 999px;
  background: var(--fx-line);
  overflow: hidden;
}

.page-about .ab-team__bar-fill {
  display: block;
  height: 100%;
  width: 44%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--fx-orange), var(--fx-orange-soft) 62%, var(--fx-mint));
}

.page-about .ab-team__panel-note {
  margin: 12px 0 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--fx-muted);
}

.page-about .ab-team__hours {
  list-style: none;
  margin: 20px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--fx-line);
  display: grid;
  gap: 10px;
}

.page-about .ab-team__hours li {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--fx-text-soft);
}

.page-about .ab-team__hours .num {
  font-family: var(--fx-mono);
  font-weight: 700;
  color: var(--fx-orange);
  font-variant-numeric: tabular-nums;
}

/* ---------- 合作与认可 ---------- */

.page-about .ab-partner__grid {
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .ab-partner__card {
  padding: clamp(18px, 2.6vw, 26px);
  transition: transform 0.24s ease, border-color 0.24s ease;
}

.page-about .ab-partner__card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 90, 31, 0.5);
}

.page-about .ab-partner__card .tag {
  margin: 0 0 12px;
  display: inline-block;
}

.page-about .ab-partner__card .card__body {
  margin: 8px 0 0;
  font-size: 0.875rem;
  line-height: 1.72;
  color: var(--fx-muted);
}

.page-about .ab-partner__awards {
  margin-top: clamp(26px, 4vw, 44px);
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--fx-line);
}

.page-about .ab-partner__awards-title {
  margin: 0 0 18px;
  font-family: var(--fx-serif);
  font-size: clamp(1.125rem, 2.8vw, 1.5rem);
  font-weight: 700;
  color: var(--fx-ink);
}

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

.page-about .ab-partner__years li {
  display: grid;
  grid-template-columns: 76px 1fr;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--fx-line);
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--fx-text-soft);
}

.page-about .ab-partner__years li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .ab-partner__years .num {
  font-family: var(--fx-mono);
  font-size: 1.0625rem;
  font-weight: 800;
  color: var(--fx-orange);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-partner__awards-note {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--fx-muted);
}

.page-about .ab-partner__awards-links {
  margin: 12px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
}

/* ---------- 收束 ---------- */

.page-about .ab-outro {
  padding-block: clamp(48px, 9vw, 120px);
}

.page-about .ab-outro__inner {
  max-width: 760px;
  margin-inline: auto;
  text-align: left;
}

.page-about .ab-outro__title {
  margin: 12px 0 0;
  font-family: var(--fx-serif);
  font-size: clamp(1.5rem, 4.6vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--fx-ink);
}

.page-about .ab-outro__lead {
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  max-width: 58ch;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--fx-text-soft);
}

.page-about .ab-outro__actions {
  margin-top: clamp(22px, 3vw, 32px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-about .ab-src__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .ab-src__check {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: 5fr 7fr;
    align-items: center;
  }

  .page-about .ab-do__grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-about .ab-team__grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-about .ab-line {
    grid-template-columns: var(--ab-rail) minmax(0, 1fr);
    gap: clamp(24px, 4vw, 56px);
    align-items: start;
  }

  .page-about .ab-line__rail {
    flex-direction: column;
    gap: 10px;
    overflow: visible;
    padding-bottom: 0;
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-about .ab-line__year {
    justify-content: flex-start;
    min-width: 104px;
    font-size: 1.125rem;
  }
}

@media (min-width: 1100px) {
  .page-about .ab-line__stamp {
    font-size: 1.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-src__card,
  .page-about .ab-partner__card,
  .page-about .ab-strip__item,
  .page-about .ab-src__more {
    transition: none;
  }
}
<<<END>>>