.page-about {
  --ab-cut: 16px;
}

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

.page-about h1,
.page-about h2,
.page-about h3,
.page-about p,
.page-about li,
.page-about dd {
  overflow-wrap: anywhere;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 24px 0 30px;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -30% -12% auto -12%;
  height: 360px;
  background:
    radial-gradient(58% 100% at 18% 0%, rgba(40, 245, 210, 0.16), transparent 72%),
    radial-gradient(46% 100% at 88% 8%, rgba(124, 92, 255, 0.14), transparent 72%);
  pointer-events: none;
}

.page-about .about-hero .container {
  position: relative;
}

.page-about .breadcrumbs {
  margin: 0 0 16px;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 24px;
}

.page-about .about-hero h1 {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 5.4vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-hero__intro {
  margin: 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(232, 245, 240, 0.82);
}

.page-about .about-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-about .factlist {
  display: grid;
  gap: 1px;
  margin: 0;
  background: var(--line-soft);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ab-cut)), calc(100% - var(--ab-cut)) 100%, 0 100%);
}

.page-about .factlist__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 15px;
  background: var(--panel);
}

.page-about .factlist dt {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-about .factlist dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan-soft);
}

.page-about .factlist__num {
  margin-right: 2px;
  font-size: 20px;
  font-weight: 700;
  color: var(--cyan);
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 36px 0 40px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.85fr);
    gap: 40px;
    align-items: end;
  }
}

/* ---------- 主体：左索引 + 右内容 ---------- */

.page-about .about-body {
  display: grid;
  gap: 26px;
  padding: 8px 0 42px;
}

.page-about .about-flow {
  min-width: 0;
}

.page-about .about-toc {
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-about .about-toc__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .about-toc__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-toc__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--line-soft);
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.page-about .about-toc__idx {
  font-size: 11px;
  color: var(--cyan);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  color: var(--paper);
  border-color: var(--cyan);
  background: rgba(40, 245, 210, 0.07);
  outline: none;
}

@media (min-width: 980px) {
  .page-about .about-body {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 42px;
    padding-top: 18px;
    align-items: start;
  }

  .page-about .about-toc {
    position: sticky;
    top: 20px;
    padding: 2px 0 2px 18px;
    border-top: 0;
    border-left: 1px solid var(--line);
  }

  .page-about .about-toc__nav {
    display: grid;
    gap: 2px;
  }

  .page-about .about-toc__link {
    justify-content: flex-start;
    padding: 9px 0;
    border: 0;
    background: none;
  }

  .page-about .about-toc__link:hover,
  .page-about .about-toc__link:focus-visible {
    background: none;
    transform: translateX(3px);
  }
}

/* ---------- 内容区块 ---------- */

.page-about .about-block {
  padding: 26px 0 30px;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-block:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .about-block__head {
  margin-bottom: 16px;
}

.page-about .about-block .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-block h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.4vw, 34px);
  line-height: 1.22;
  letter-spacing: -0.005em;
  color: var(--paper);
}

.page-about .about-block__body > p {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(232, 245, 240, 0.84);
}

.page-about .pullquote {
  margin: 20px 0;
  padding: 20px 18px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--cyan-soft);
  background: linear-gradient(120deg, rgba(40, 245, 210, 0.1), rgba(255, 181, 71, 0.05) 72%);
  border-left: 3px solid var(--amber);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-about .about-figure {
  margin: 20px 0;
}

.page-about .about-block .media-frame__caption {
  font-size: 12.5px;
  color: var(--muted);
}

.page-about .bullets {
  list-style: none;
  display: grid;
  gap: 9px;
  margin: 14px 0 0;
  padding: 0;
}

.page-about .bullets li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(232, 245, 240, 0.8);
}

.page-about .bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

/* ---------- 职能矩阵 ---------- */

.page-about .roles {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
}

.page-about .role {
  padding: 15px 16px 17px;
  background: var(--panel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: background 0.2s ease, transform 0.2s ease;
}

.page-about .role:hover {
  background: var(--card);
  transform: translateY(-2px);
}

.page-about .role__count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .role__name {
  margin: 8px 0 7px;
  font-family: var(--font-display);
  font-size: 19px;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-about .role__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

@media (min-width: 600px) {
  .page-about .roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
}

/* ---------- 编辑台图文分栏 ---------- */

.page-about .about-split {
  display: grid;
  gap: 18px;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px dashed var(--line);
}

.page-about .about-split figure {
  margin: 0;
}

.page-about .about-split h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 21px;
  color: var(--paper);
}

.page-about .about-split__text p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(232, 245, 240, 0.8);
}

@media (min-width: 760px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: 26px;
    align-items: start;
  }
}

/* ---------- 时间线 ---------- */

.page-about .timeline {
  list-style: none;
  margin: 6px 0 0;
  padding: 0 0 0 22px;
  border-left: 1px dashed var(--line);
}

.page-about .timeline__item {
  position: relative;
  padding: 2px 0 26px 6px;
}

.page-about .timeline__item:last-child {
  padding-bottom: 4px;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 9px;
  width: 11px;
  height: 11px;
  background: var(--ink);
  border: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.page-about .timeline__item:hover::before {
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(40, 245, 210, 0.14);
}

.page-about .timeline__year {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--cyan);
  transition: color 0.2s ease;
}

.page-about .timeline__item:hover .timeline__year {
  color: var(--amber);
}

.page-about .timeline__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--paper);
}

.page-about .timeline__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 合作生态 ---------- */

.page-about .tagwall {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 16px 0 14px;
  padding: 0;
}

.page-about .tagwall__item {
  padding: 8px 13px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--cyan-soft);
  background: rgba(40, 245, 210, 0.06);
  border: 1px solid var(--line);
  transition: color 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.page-about .tagwall__item:hover {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-about .cred {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.page-about .cred__item {
  padding: 13px 15px 15px;
  background: rgba(18, 59, 48, 0.55);
  border-top: 2px solid var(--violet);
}

.page-about .cred__label {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan-soft);
}

.page-about .cred__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(232, 245, 240, 0.82);
}

@media (min-width: 720px) {
  .page-about .cred {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 服务原则 ---------- */

.page-about .rules {
  display: grid;
  gap: 14px;
  margin-top: 4px;
}

.page-about .rule {
  padding: 15px 16px 17px;
  background: var(--panel);
  border-left: 2px solid var(--line);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-about .rule:hover {
  background: var(--card);
  border-left-color: var(--amber);
}

.page-about .rule__num {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-about .rule h3 {
  margin: 0 0 7px;
  font-family: var(--font-display);
  font-size: 19px;
  color: var(--paper);
}

.page-about .rule p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

@media (min-width: 720px) {
  .page-about .rules {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

/* ---------- 收尾 ---------- */

.page-about .about-cta {
  padding: 6px 0 46px;
}

.page-about .about-cta__inner {
  display: grid;
  gap: 18px;
  padding: 24px 20px;
  background:
    linear-gradient(135deg, rgba(40, 245, 210, 0.13), rgba(255, 46, 136, 0.07) 56%, rgba(255, 181, 71, 0.11));
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-about .about-cta h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.2vw, 30px);
  line-height: 1.24;
  color: var(--paper);
}

.page-about .about-cta__copy p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(232, 245, 240, 0.82);
}

.page-about .about-cta__copy a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(40, 245, 210, 0.45);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-about .about-cta__copy a:hover,
.page-about .about-cta__copy a:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

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

@media (min-width: 800px) {
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 26px;
    align-items: center;
    padding: 30px 32px;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .role,
  .page-about .rule,
  .page-about .tagwall__item,
  .page-about .timeline__item::before,
  .page-about .timeline__year,
  .page-about .about-toc__link,
  .page-about .about-cta__copy a {
    transition: none;
  }

  .page-about .role:hover,
  .page-about .about-toc__link:hover,
  .page-about .about-toc__link:focus-visible {
    transform: none;
  }
}
<<<END>>>