.page-about {
  --about-radius: var(--r-lg);
  display: block;
  padding-bottom: clamp(36px, 6vw, 88px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: clamp(20px, 3vw, 38px);
  padding-top: clamp(16px, 2.6vw, 32px);
  padding-bottom: clamp(28px, 4.4vw, 56px);
  border-bottom: 1px solid var(--line-soft);
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
  }
}

.page-about .about-hero__title,
.page-about .about-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-size: clamp(31px, 7.2vw, 60px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -.025em;
  color: var(--white);
}

.page-about .about-hero__lede {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.15vw, 17.5px);
  line-height: 1.78;
  color: rgba(245, 248, 247, .82);
}

.page-about .about-hero__pills {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-hero__pills li {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 9px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(18, 26, 43, .72);
  font-size: 13px;
  color: var(--gray);
  white-space: nowrap;
}

.page-about .about-hero__pills .mono {
  font-size: 15px;
  font-weight: 700;
  color: var(--cyan);
}

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

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--about-radius);
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-about .about-hero__media figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--gray);
}

/* ---------- 左右分屏骨架 ---------- */
.page-about .about-shell {
  display: grid;
  gap: clamp(26px, 4vw, 40px);
  padding-top: clamp(28px, 4.4vw, 54px);
}

@media (min-width: 1080px) {
  .page-about .about-shell {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: clamp(34px, 4.4vw, 68px);
    align-items: start;
  }
}

/* 左侧章节索引 */
.page-about .about-index {
  position: static;
}

@media (min-width: 1080px) {
  .page-about .about-index {
    position: sticky;
    top: 28px;
  }
}

.page-about .about-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-about .about-index__list li {
  flex: 0 0 auto;
}

.page-about .about-index__link {
  display: block;
  white-space: nowrap;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(18, 26, 43, .6);
  color: var(--gray);
  font-size: 13px;
  text-decoration: none;
  transition: color .18s ease, border-color .18s ease, background .18s ease;
}

.page-about .about-index__link:hover {
  color: var(--white);
  border-color: rgba(0, 245, 212, .45);
}

@media (min-width: 1080px) {
  .page-about .about-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-about .about-index__list li {
    flex: none;
  }

  .page-about .about-index__link {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: none;
    padding: 8px 0 8px 15px;
    margin-left: -1px;
    font-size: 13.5px;
    line-height: 1.5;
  }

  .page-about .about-index__link:hover,
  .page-about .about-index__link.is-active {
    color: var(--cyan);
    border-left-color: var(--cyan);
    background: linear-gradient(90deg, rgba(0, 245, 212, .09), transparent 72%);
  }
}

/* ---------- 章节通用 ---------- */
.page-about .about-block {
  padding-bottom: clamp(32px, 4.8vw, 60px);
  border-bottom: 1px solid var(--line-soft);
  scroll-margin-top: 22px;
}

.page-about .about-block + .about-block {
  padding-top: clamp(32px, 4.8vw, 60px);
}

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

.page-about .section-head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0 0 clamp(16px, 2.4vw, 26px);
}

.page-about .section-head__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--green);
}

.page-about .section-head__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(22px, 3.2vw, 32px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -.015em;
  color: var(--white);
}

.page-about .about-block > p {
  margin: 0 0 1em;
  font-size: clamp(15px, 1.05vw, 16.5px);
  line-height: 1.78;
  color: rgba(245, 248, 247, .84);
}

.page-about .about-block > p:last-child {
  margin-bottom: 0;
}

.page-about .about-links {
  margin-top: clamp(18px, 2.4vw, 26px);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--gray);
}

.page-about .about-links a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 245, 212, .38);
  padding-bottom: 1px;
}

.page-about .about-links a:hover {
  color: var(--green);
  border-bottom-color: var(--green);
}

.page-about .about-note {
  margin: clamp(14px, 2vw, 20px) 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--gray);
}

/* ---------- 时间轴 ---------- */
.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 clamp(24px, 3.4vw, 38px) clamp(18px, 2.8vw, 30px);
  border-left: 1px solid var(--line);
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 9px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(0, 230, 118, .13);
}

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

.page-about .timeline__year {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: clamp(19px, 2.6vw, 25px);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-about .timeline__title {
  margin: 0 0 7px;
  font-family: var(--font-head);
  font-size: clamp(16.5px, 2vw, 20px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--white);
}

.page-about .timeline__text {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--gray);
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 0 0 clamp(18px, 2.6vw, 28px);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-about .about-figure img[src*="h:700"] {
  aspect-ratio: 10 / 7;
}

.page-about .about-figure--team {
  margin-bottom: 0;
}

.page-about .about-figure--team img {
  aspect-ratio: 4 / 3;
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--gray);
}

/* ---------- 业务版图 ---------- */
.page-about .biz-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

@media (min-width: 700px) {
  .page-about .biz-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .biz-card {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(165deg, rgba(18, 26, 43, .94), rgba(11, 18, 32, .68));
  transition: border-color .2s ease, background .2s ease;
}

.page-about .biz-card--nav { --biz: var(--green); }
.page-about .biz-card--app { --biz: var(--cyan); }
.page-about .biz-card--board { --biz: var(--orange); }
.page-about .biz-card--hub { --biz: var(--purple); }

.page-about .biz-card:hover {
  border-color: var(--biz);
}

.page-about .biz-card__tag {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--biz);
}

.page-about .biz-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: clamp(16.5px, 2vw, 19px);
  font-weight: 700;
  line-height: 1.42;
  color: var(--white);
}

.page-about .biz-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
}

/* ---------- 团队 ---------- */
.page-about .team-split {
  display: grid;
  gap: clamp(18px, 2.8vw, 30px);
}

@media (min-width: 820px) {
  .page-about .team-split {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .88fr);
    align-items: start;
  }
}

.page-about .team-split__text > p {
  margin: 0 0 1em;
  font-size: clamp(15px, 1.05vw, 16.5px);
  line-height: 1.78;
  color: rgba(245, 248, 247, .84);
}

.page-about .roster {
  list-style: none;
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .roster li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 2px;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  color: var(--gray);
}

.page-about .roster b {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
}

/* ---------- 资质荣誉 ---------- */
.page-about .honor-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .honor-list li {
  display: grid;
  grid-template-columns: minmax(0, auto) minmax(0, 1fr);
  gap: 14px;
  padding: 14px 2px;
  border-bottom: 1px solid var(--line);
}

.page-about .honor-list__year {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--orange);
  padding-top: 2px;
  min-width: 44px;
}

.page-about .honor-list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: rgba(245, 248, 247, .86);
}

/* ---------- 合作生态 ---------- */
.page-about .partner-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
  margin-top: clamp(16px, 2.4vw, 24px);
}

@media (min-width: 640px) {
  .page-about .partner-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-about .partner-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .partner-card {
  padding: 16px 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: rgba(18, 26, 43, .55);
  transition: border-color .2s ease, background .2s ease;
}

.page-about .partner-card:hover {
  border-color: rgba(0, 230, 118, .42);
  background: rgba(6, 42, 27, .5);
}

.page-about .partner-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--white);
}

.page-about .partner-card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--gray);
}

/* ---------- 持续运营 ---------- */
.page-about .ops-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

@media (min-width: 700px) {
  .page-about .ops-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .ops-item {
  padding: 16px 18px;
  border-left: 2px solid var(--green);
  background: linear-gradient(90deg, rgba(0, 230, 118, .08), transparent 68%);
}

.page-about .ops-item__k {
  display: block;
  margin-bottom: 7px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-about .ops-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(245, 248, 247, .82);
}

/* ---------- 结尾行动块 ---------- */
.page-about .about-cta {
  margin-top: clamp(22px, 3vw, 32px);
  padding: clamp(20px, 2.8vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(135deg, rgba(0, 230, 118, .12), rgba(30, 107, 255, .12));
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.page-about .about-cta p {
  margin: 0;
  flex: 1 1 260px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(245, 248, 247, .88);
}

.page-about .about-cta .btn {
  flex: 0 0 auto;
}

/* ---------- 返回顶部 ---------- */
.page-about .back-to-top {
  margin-top: clamp(28px, 4vw, 48px);
}

@media (min-width: 1080px) {
  .page-about .back-to-top {
    margin-left: 200px;
  }
}
</style>
<<<PAGE_CSS_END>>>