.page-about {
  --ab-line: rgba(168, 180, 174, .16);
  --ab-line-2: rgba(168, 180, 174, .38);
  --ab-h1: clamp(1.85rem, 1.15rem + 3.4vw, 3.1rem);
  --ab-h2: clamp(1.45rem, 1.05rem + 1.9vw, 2.35rem);
  background: var(--ink);
  color: var(--paper-2);
  overflow-x: hidden;
}

.page-about .breadcrumb {
  font-size: var(--fs-12);
  letter-spacing: .04em;
}

.page-about .breadcrumb a {
  color: var(--paper-2);
  text-decoration: none;
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--lime);
}

.page-about .breadcrumb__sep {
  margin: 0 .5rem;
  color: var(--grey);
}

.page-about .breadcrumb span[aria-current] {
  color: var(--lime);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: clamp(1.25rem, 3vw, 2rem) 0 clamp(2.5rem, 6vw, 4.5rem);
  background:
    radial-gradient(90% 60% at 88% 0%, rgba(198, 242, 78, .10), transparent 62%),
    radial-gradient(70% 60% at 0% 100%, rgba(255, 90, 43, .08), transparent 70%),
    linear-gradient(180deg, var(--ink) 0%, #0D241A 58%, var(--char) 100%);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  margin-top: clamp(1.25rem, 3vw, 2rem);
}

.page-about .about-hero__copy h1 {
  font-family: var(--font-display);
  font-size: var(--ab-h1);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.012em;
  color: var(--paper);
  margin: .55rem 0 0;
}

.page-about .about-hero__lead {
  max-width: 36rem;
  margin: 1.1rem 0 0;
  font-size: var(--fs-16);
  line-height: 1.9;
  color: var(--paper-2);
}

.page-about .about-hero__lead--sm {
  margin-top: .85rem;
  font-size: var(--fs-14);
  color: var(--grey);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.65rem;
}

.page-about .about-hero__visual {
  border: 1px solid var(--ab-line-2);
  border-radius: var(--radius);
  overflow: hidden;
  background: #0B1F17;
  box-shadow: 0 26px 60px -34px rgba(0, 0, 0, .95);
}

.page-about .about-hero__visual svg {
  display: block;
  width: 100%;
  height: auto;
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    align-items: center;
  }
}

/* ---------- 首屏数字条 ---------- */

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(2rem, 5vw, 3.25rem) 0 0;
  background: var(--ab-line-2);
  border: 1px solid var(--ab-line-2);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-stats__cell {
  padding: 1.05rem 1.15rem 1.2rem;
  background: rgba(11, 31, 23, .88);
}

.page-about .about-stats dt {
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--grey);
}

.page-about .about-stats dd {
  margin: .45rem 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-20);
  font-weight: 700;
  color: var(--lime);
  letter-spacing: -.01em;
}

@media (min-width: 720px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 章节骨架 ---------- */

.page-about .about-section {
  position: relative;
  padding: clamp(2.5rem, 7vw, 5rem) 0;
}

.page-about .about-section__lead {
  max-width: 36rem;
  margin: 1rem 0 0;
  font-size: var(--fs-14);
  line-height: 1.9;
  color: var(--grey);
}

.page-about .section-title {
  font-family: var(--font-display);
  font-size: var(--ab-h2);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--paper);
  margin: .5rem 0 0;
}

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

.page-about .media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--ab-line-2);
  background: var(--char);
}

.page-about .media__caption {
  margin-top: .7rem;
  font-size: var(--fs-12);
  line-height: 1.75;
  color: var(--grey);
}

/* ---------- 时间线 ---------- */

.page-about .about-timeline__banner {
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

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

.page-about .tl {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.25rem);
  margin-top: clamp(2rem, 5vw, 3rem);
}

.page-about .tl-index {
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  padding-bottom: .4rem;
  -webkit-overflow-scrolling: touch;
}

.page-about .tl-index a {
  flex: 0 0 auto;
  padding: .42rem .82rem;
  border: 1px solid var(--ab-line-2);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--paper-2);
  text-decoration: none;
  white-space: nowrap;
  transition: color .25s ease, background-color .25s ease, border-color .25s ease;
}

.page-about .tl-index a:hover,
.page-about .tl-index a:focus-visible {
  color: var(--ink);
  background: var(--lime);
  border-color: var(--lime);
}

.page-about .tl-list {
  position: relative;
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.6rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .tl-list::before {
  content: "";
  position: absolute;
  left: 9px;
  top: .7rem;
  bottom: .7rem;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--lime) 0%, var(--lime-d) 42%, var(--ab-line-2) 100%);
}

.page-about .tl-item {
  position: relative;
  padding-left: 2.6rem;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: .5rem;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--lime);
  box-shadow: 0 0 0 5px rgba(198, 242, 78, .08);
  transition: background-color .3s ease, box-shadow .3s ease, border-color .3s ease;
}

.page-about .tl-item:hover::before,
.page-about .tl-item:focus-within::before {
  background: var(--lime);
  box-shadow: 0 0 0 8px rgba(198, 242, 78, .16);
}

.page-about .tl-item__era {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .16em;
  color: var(--lime);
}

.page-about .tl-item h3 {
  margin: .32rem 0 .55rem;
  font-family: var(--font-display);
  font-size: var(--fs-20);
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-about .tl-item p {
  max-width: 40rem;
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.88;
  color: var(--paper-2);
}

@media (min-width: 940px) {
  .page-about .tl {
    grid-template-columns: 186px minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }

  .page-about .tl-index {
    position: sticky;
    top: 6.5rem;
    flex-direction: column;
    gap: .42rem;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .tl-index a {
    border-radius: var(--radius-sm);
    text-align: left;
  }
}

/* ---------- 四条原则 ---------- */

.page-about .principle-grid {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
}

.page-about .principle {
  --p-fg: var(--paper);
  --p-body: var(--paper-2);
  --p-div: var(--ab-line-2);
  position: relative;
  padding: clamp(1.35rem, 3vw, 1.9rem);
  border: 1px solid var(--ab-line-2);
  border-radius: var(--radius);
  background: linear-gradient(168deg, rgba(30, 59, 49, .55), rgba(16, 19, 18, .88));
  color: var(--p-fg);
  transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease;
}

.page-about .principle:nth-child(odd) {
  --p-fg: var(--ink-text);
  --p-body: rgba(27, 33, 30, .8);
  --p-div: rgba(27, 33, 30, .22);
  background: var(--paper);
  border-color: rgba(27, 33, 30, .16);
}

.page-about .principle:hover,
.page-about .principle:focus-within {
  transform: translateY(-3px);
  border-color: var(--lime-d);
  box-shadow: 0 22px 44px -30px rgba(0, 0, 0, .9);
}

.page-about .principle__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  font-weight: 700;
  line-height: 1;
  color: var(--heat-a);
  letter-spacing: -.02em;
}

.page-about .principle:nth-child(odd) .principle__no {
  color: var(--heat-a);
}

.page-about .principle h3 {
  margin: .8rem 0 .6rem;
  font-family: var(--font-display);
  font-size: var(--fs-20);
  font-weight: 700;
  color: var(--p-fg);
}

.page-about .principle__body {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--p-body);
}

.page-about .principle__scene {
  margin: 1rem 0 0;
  padding-top: .9rem;
  border-top: 1px dashed var(--p-div);
  font-size: var(--fs-12);
  line-height: 1.8;
  color: var(--p-body);
  opacity: .68;
  transition: opacity .35s ease;
}

.page-about .principle:hover .principle__scene,
.page-about .principle:focus-within .principle__scene {
  opacity: 1;
}

@media (min-width: 780px) {
  .page-about .principle-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.15rem;
  }
}

/* ---------- 生产流程 ---------- */

.page-about .flow-line {
  display: none;
  width: 100%;
  height: 16px;
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 1.1rem;
}

.page-about .flow {
  display: grid;
  gap: .85rem;
  margin-top: clamp(1.5rem, 4vw, 2rem);
}

.page-about .flow__step {
  position: relative;
  padding: 1.2rem 1.15rem 1.4rem;
  border: 1px solid var(--ab-line-2);
  border-radius: var(--radius);
  background: rgba(16, 19, 18, .74);
  overflow: hidden;
}

.page-about .flow__step::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--heat-a), var(--heat-b));
}

.page-about .flow__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-20);
  font-weight: 700;
  color: var(--lime);
  letter-spacing: .04em;
}

.page-about .flow__step h3 {
  margin: .5rem 0 .5rem;
  font-family: var(--font-display);
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--paper);
}

.page-about .flow__step p {
  margin: 0;
  font-size: var(--fs-12);
  line-height: 1.85;
  color: var(--paper-2);
}

.page-about .pipeline-figure {
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
}

.page-about .pipeline-figure img {
  aspect-ratio: 3 / 2;
}

@media (min-width: 900px) {
  .page-about .flow-line {
    display: block;
  }

  .page-about .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: .9rem;
  }

  .page-about .flow__step:not(:last-child)::before {
    content: "";
    position: absolute;
    right: -.58rem;
    top: 50%;
    width: .5rem;
    height: .5rem;
    border-top: 1.5px solid var(--lime-d);
    border-right: 1.5px solid var(--lime-d);
    transform: translateY(-50%) rotate(45deg);
  }
}

/* ---------- 团队 ---------- */

.page-about .team-grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
}

.page-about .crew-list {
  display: grid;
}

.page-about .crew {
  display: grid;
  grid-template-columns: minmax(2.6rem, auto) minmax(0, 1fr);
  gap: .35rem 1.15rem;
  align-items: start;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--ab-line);
}

.page-about .crew:first-child {
  border-top: 1px solid var(--ab-line);
}

.page-about .crew__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
  letter-spacing: -.02em;
}

.page-about .crew__body h3 {
  margin: 0 0 .45rem;
  font-family: var(--font-display);
  font-size: var(--fs-20);
  font-weight: 700;
  color: var(--paper);
}

.page-about .crew__body p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.88;
  color: var(--paper-2);
}

.page-about .team-figure img {
  aspect-ratio: 14 / 9;
}

@media (min-width: 940px) {
  .page-about .team-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .84fr);
    align-items: start;
    gap: clamp(2rem, 4vw, 3.25rem);
  }
}

/* ---------- 合作与认可 ---------- */

.page-about .honor-grid {
  display: grid;
  gap: .85rem;
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
}

.page-about .honor {
  padding: 1.15rem 1.25rem 1.3rem;
  border: 1px solid var(--ab-line-2);
  border-left: 3px solid var(--lime-d);
  border-radius: var(--radius-sm);
  background: linear-gradient(150deg, rgba(30, 59, 49, .5), rgba(11, 31, 23, .62));
  transition: border-left-color .3s ease, background-color .3s ease;
}

.page-about .honor:hover {
  border-left-color: var(--lime);
}

.page-about .honor__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--lime);
}

.page-about .honor h3 {
  margin: .5rem 0 .5rem;
  font-family: var(--font-display);
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--paper);
}

.page-about .honor p {
  margin: 0;
  font-size: var(--fs-12);
  line-height: 1.85;
  color: var(--paper-2);
}

@media (min-width: 760px) {
  .page-about .honor-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 问答 ---------- */

.page-about .faq-list {
  display: grid;
  gap: .6rem;
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
}

.page-about .faq-list details {
  border: 1px solid var(--ab-line-2);
  border-radius: var(--radius);
  background: rgba(16, 19, 18, .68);
  overflow: hidden;
  transition: border-color .3s ease;
}

.page-about .faq-list details[open] {
  border-color: var(--lime-d);
}

.page-about .faq-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.15rem;
  font-family: var(--font-display);
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
}

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

.page-about .faq-list summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--fs-20);
  line-height: 1;
  color: var(--lime);
}

.page-about .faq-list details[open] summary::after {
  content: "\2212";
}

.page-about .faq-list details[open] summary {
  border-bottom: 1px solid var(--ab-line);
}

.page-about .faq-list summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.page-about .faq-body {
  padding: 1rem 1.15rem 1.2rem;
  font-size: var(--fs-14);
  line-height: 1.88;
  color: var(--paper-2);
}

/* ---------- 收尾 ---------- */

.page-about .about-cta {
  padding-bottom: clamp(3rem, 8vw, 5.5rem);
}

.page-about .about-cta__panel {
  display: grid;
  gap: 1.1rem;
  padding: clamp(1.6rem, 4vw, 2.6rem);
  border: 1px solid var(--ab-line-2);
  border-radius: var(--radius);
  background:
    radial-gradient(72% 130% at 100% 0%, rgba(198, 242, 78, .14), transparent 62%),
    linear-gradient(160deg, rgba(30, 59, 49, .62), rgba(11, 31, 23, .92));
}

.page-about .about-cta__panel h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--ab-h2);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .about-cta__panel p {
  max-width: 38rem;
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.9;
  color: var(--paper-2);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}

@media (prefers-reduced-motion: reduce) {
  .page-about .principle,
  .page-about .tl-item::before,
  .page-about .honor,
  .page-about .faq-list details,
  .page-about .tl-index a {
    transition: none;
  }

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