.page-about {
  --about-gap: clamp(20px, 4vw, 32px);
  --about-card-pad: clamp(18px, 3vw, 26px);
}

.page-about .about-crumbs {
  padding-top: 18px;
}

.page-about .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--muted);
}

.page-about .breadcrumbs li::after {
  content: "/";
  margin-left: 8px;
  color: var(--line-strong);
}

.page-about .breadcrumbs li:last-child::after {
  content: none;
}

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

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

/* 首屏 */
.page-about .about-hero {
  padding-top: clamp(20px, 4vw, 36px);
  padding-bottom: clamp(36px, 6vw, 64px);
}

.page-about .about-hero-grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-hl {
  color: var(--lime);
}

.page-about .about-hero-copy h1 {
  margin: 10px 0 18px;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-stat-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 32px;
}

.page-about .about-stat-row .stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

.page-about .about-stat-row .stat-value {
  color: var(--lime);
  font-size: clamp(20px, 3.4vw, 26px);
  display: block;
  line-height: 1.2;
}

.page-about .about-stat-row .stat-label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
}

.page-about .about-hero-index {
  background: linear-gradient(160deg, var(--card), var(--ink-2));
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  padding: var(--about-card-pad);
}

.page-about .about-index-label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .about-index-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-about .about-index-item a {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 2px 10px;
  padding: 12px;
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--paper);
  transition: background 0.2s ease;
}

.page-about .about-index-item a:hover,
.page-about .about-index-item a:focus-visible {
  background: var(--lime-soft);
}

.page-about .about-index-no {
  grid-row: 1 / span 2;
  font-size: 12px;
  color: var(--lime);
  padding-top: 2px;
}

.page-about .about-index-name {
  font-size: 15px;
  font-weight: 500;
}

.page-about .about-index-desc {
  grid-column: 2;
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.55;
}

/* 分屏结构 */
.page-about .about-split {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-split-main,
.page-about .about-split-side,
.page-about .about-split-visual {
  min-width: 0;
}

.page-about .about-head-narrow {
  max-width: 44rem;
}

.page-about .prose {
  margin-top: 18px;
}

.page-about .prose p {
  color: var(--paper);
  opacity: 0.86;
  font-size: 16px;
  line-height: 1.8;
  margin: 0 0 16px;
}

.page-about .about-figure {
  margin: 26px 0 0;
}

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

.page-about .about-note {
  margin: 20px 0 0;
  padding: 16px 18px;
  background: var(--card);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius-md);
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .about-note--orange {
  border-left-color: var(--orange);
}

/* 职能索引 */
.page-about .about-role-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-role-list .index-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 18px;
}

.page-about .about-role-list .index-no {
  display: block;
  font-size: 13px;
  color: var(--lime);
  letter-spacing: 0.08em;
}

.page-about .about-role-list .index-title {
  margin: 8px 0 6px;
  font-size: 17px;
  font-weight: 500;
  color: var(--paper);
}

.page-about .about-role-list .index-meta {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* 时间线 */
.page-about .about-timeline {
  list-style: none;
  margin: 34px 0 0;
  padding: 0 0 0 30px;
  position: relative;
  display: grid;
  gap: 26px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--lime), var(--cyan) 55%, rgba(154, 167, 199, 0.18));
}

.page-about .about-milestone {
  position: relative;
  padding: 0 0 4px;
}

.page-about .about-milestone::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--lime);
}

.page-about .about-year {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--lime);
  background: var(--lime-soft);
  border-radius: var(--radius-pill);
  padding: 3px 12px;
}

.page-about .about-milestone-body h3 {
  margin: 10px 0 8px;
  font-size: clamp(18px, 2.8vw, 22px);
  font-weight: 500;
  color: var(--paper);
}

.page-about .about-milestone-body > p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-milestone .panel {
  margin-top: 12px;
}

/* 评测与赛程 */
.page-about .about-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.page-about .about-inline-link {
  margin: 26px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-inline-link a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

/* 运营数据 */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 32px;
}

.page-about .about-stats .stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 18px;
}

.page-about .about-stats .stat-value {
  display: block;
  color: var(--lime);
  font-size: clamp(19px, 3vw, 24px);
  line-height: 1.25;
}

.page-about .about-stats .stat-label {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-reliability-notes {
  display: grid;
  gap: 14px;
  margin-top: 30px;
}

.page-about .about-reliability-notes .card {
  padding: var(--about-card-pad);
}

.page-about .about-reliability-notes h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 500;
  color: var(--paper);
}

.page-about .about-reliability-notes p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* 合作生态 */
.page-about .about-place-figure {
  margin: 0;
}

.page-about .about-contact-card {
  margin-top: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--about-card-pad);
}

.page-about .about-contact-title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .contact-line {
  display: grid;
  gap: 4px;
  margin: 0 0 12px;
  font-size: 14px;
}

.page-about .contact-line:last-child {
  margin-bottom: 0;
}

.page-about .contact-key {
  color: var(--muted);
  font-size: 12.5px;
}

.page-about .contact-val {
  color: var(--paper);
  line-height: 1.6;
  word-break: break-word;
}

/* 结尾行动区 */
.page-about .about-cta-wrap {
  padding-bottom: clamp(48px, 8vw, 90px);
}

.page-about .about-cta {
  display: grid;
  gap: 22px;
  padding: clamp(24px, 4vw, 42px);
  border-radius: var(--radius-xl);
  border: 1px solid var(--lime-line);
  background: linear-gradient(135deg, rgba(198, 255, 61, 0.09), rgba(57, 230, 208, 0.06) 60%, transparent);
}

.page-about .about-cta-text h2 {
  margin: 0 0 10px;
}

.page-about .about-cta-text p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 平板与桌面 */
@media (min-width: 720px) {
  .page-about .about-stat-row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-reliability-notes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.85fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: start;
  }

  .page-about .about-hero-index {
    position: sticky;
    top: 108px;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: start;
  }

  .page-about .about-split--reverse {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  }

  .page-about .about-split--reverse .about-split-visual {
    order: 1;
  }

  .page-about .about-split--reverse .about-split-main {
    order: 2;
  }

  .page-about .about-timeline {
    padding-left: 40px;
  }

  .page-about .about-timeline::before {
    left: 10px;
  }

  .page-about .about-milestone::before {
    left: -36px;
    width: 14px;
    height: 14px;
  }
}
<<<PAGE_CSS_END>>>