.page-about {
  --about-line: rgba(201, 150, 46, .3);
  --about-line-soft: rgba(154, 147, 166, .22);
  --about-panel: #1A1820;
  color: var(--ivory);
  padding-bottom: 72px;
}

.page-about .about-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  padding: 10px 0 46px;
}

.page-about .about-kicker {
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--gold);
  margin: 0 0 16px;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 10vw, 86px);
  line-height: 1.06;
  letter-spacing: -.02em;
  margin: 0 0 20px;
  color: var(--ivory);
}

.page-about .about-hero h1 .line {
  display: block;
}

.page-about .about-hero h1 .line:last-child {
  color: var(--gold-light);
}

.page-about .about-lede {
  max-width: 46ch;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--ivory);
  opacity: .88;
  margin: 0;
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--about-line);
}

.page-about .about-stat {
  font-size: 13px;
  letter-spacing: .03em;
  color: var(--mauve);
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.page-about .about-stat b {
  font-size: 22px;
  line-height: 1;
  color: var(--gold);
  font-weight: 500;
}

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

.page-about .about-hero__media {
  max-width: 560px;
}

.page-about .about-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  row-gap: 14px;
  padding: 42px 0;
  border-top: 1px solid var(--about-line);
}

.page-about .about-rail {
  display: block;
}

.page-about .about-num {
  display: inline-block;
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--gold);
}

.page-about .about-h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 5.4vw, 40px);
  line-height: 1.2;
  letter-spacing: -.01em;
  margin: 0 0 10px;
  color: var(--ivory);
}

.page-about .about-lede-sm {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mauve);
  max-width: 52ch;
}

.page-about .about-body p {
  font-size: 16px;
  line-height: 1.8;
  margin: 0 0 16px;
  max-width: 66ch;
}

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

.page-about .about-body a {
  color: var(--gold-light);
  text-decoration: none;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-body a:hover {
  color: var(--ivory);
  border-bottom-color: var(--gold-light);
}

.page-about .about-note {
  font-size: 14.5px !important;
  line-height: 1.8;
  color: var(--mauve);
  border-left: 3px solid var(--bronze);
  padding-left: 14px;
  margin-top: 20px !important;
}

/* 团队分组 */
.page-about .team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .team-card {
  padding: 22px 20px 20px;
  background: var(--about-panel);
  transition: transform .25s ease, border-color .25s ease;
}

.page-about .team-card:hover {
  transform: translateY(-3px);
  border-color: var(--gold);
}

.page-about .team-card .card-meta {
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--bronze);
  margin: 0 0 10px;
}

.page-about .team-card .card-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 21px;
  line-height: 1.3;
  margin: 0 0 10px;
  color: var(--ivory);
}

.page-about .team-card .card-body {
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mauve);
  margin: 0;
}

.page-about .team-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 16px 0 0;
  padding: 0;
}

.page-about .team-tags li {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .07em;
  padding: 4px 10px;
  border: 1px solid var(--about-line-soft);
  border-radius: 999px;
  color: var(--mauve);
  opacity: .72;
  transition: opacity .25s ease, color .25s ease, border-color .25s ease;
}

.page-about .team-card:hover .team-tags li {
  opacity: 1;
  color: var(--gold-light);
  border-color: var(--about-line);
}

/* 时间线 */
.page-about .archive-timeline {
  position: relative;
  list-style: none;
  margin: 4px 0 0;
  padding: 0 0 0 26px;
}

.page-about .archive-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold-light) 0%, var(--bronze) 58%, rgba(138, 97, 23, 0) 100%);
  transform: skewX(-5deg);
  transform-origin: top left;
}

.page-about .timeline-item {
  position: relative;
  padding: 0 0 30px;
}

.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 6px;
  width: 9px;
  height: 9px;
  background: var(--obsidian);
  border: 2px solid var(--gold);
  transform: rotate(45deg);
}

.page-about .timeline-date {
  display: block;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--gold);
  margin-bottom: 6px;
}

.page-about .timeline-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  line-height: 1.35;
  margin: 0 0 8px;
  color: var(--ivory);
}

.page-about .timeline-body {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mauve);
  max-width: 62ch;
}

.page-about .timeline-media {
  list-style: none;
  padding: 2px 0 30px;
}

.page-about .timeline-media .image-frame {
  max-width: 100%;
}

/* 更新节奏 */
.page-about .rhythm-panel {
  display: grid;
  gap: 14px;
  margin-bottom: 22px;
}

.page-about .rhythm-row {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 18px 18px 16px;
  background: var(--about-panel);
  border: 2px solid rgba(138, 97, 23, .45);
  border-left: 6px solid var(--gold);
}

.page-about .rhythm-tag {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gold-light);
  padding-top: 3px;
}

.page-about .rhythm-copy h3 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.35;
  margin: 0 0 6px;
  color: var(--ivory);
}

.page-about .rhythm-copy p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mauve);
}

.page-about .rhythm-track {
  grid-column: 1 / -1;
  display: block;
  height: 4px;
  margin-top: 14px;
  background: rgba(154, 147, 166, .18);
  overflow: hidden;
}

.page-about .rhythm-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
}

.page-about .rhythm-fill--a { width: 100%; }
.page-about .rhythm-fill--b { width: 46%; }
.page-about .rhythm-fill--c { width: 20%; }

/* 案例分类 */
.page-about .case-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.page-about .case-stat {
  padding: 18px 16px;
  border: 2px solid var(--about-line);
  background: rgba(201, 150, 46, .05);
}

.page-about .case-stat__num {
  display: block;
  font-size: 34px;
  line-height: 1;
  color: var(--gold-light);
  letter-spacing: .02em;
}

.page-about .case-stat__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--mauve);
}

/* 合作生态 */
.page-about .partner-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-about .partner-media {
  max-width: 100%;
}

/* 运营主体 */
.page-about .org-list {
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid var(--about-line);
}

.page-about .org-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .org-row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--bronze);
  text-transform: uppercase;
}

.page-about .org-row dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--ivory);
  word-break: break-word;
}

/* 收藏条 */
.page-about .about-save {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  margin-top: 40px;
  padding: 24px 22px;
  background: var(--teal);
  border: 2px solid var(--gold);
  box-shadow: var(--shadow);
}

.page-about .about-save__label {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--gold-light);
  margin: 0 0 8px;
}

.page-about .about-save__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ivory);
  max-width: 52ch;
}

.page-about .about-save__text a {
  color: var(--gold-light);
  border-bottom: 1px solid rgba(227, 190, 114, .5);
  text-decoration: none;
}

.page-about .about-save__btn {
  justify-self: start;
}

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

  .page-about .org-row {
    grid-template-columns: 132px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: center;
    gap: 52px;
    padding: 34px 0 76px;
  }

  .page-about .about-hero__media {
    max-width: none;
  }

  .page-about .partner-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
    gap: 38px;
  }

  .page-about .about-save {
    grid-template-columns: minmax(0, 1fr) auto;
    padding: 30px 32px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-section {
    grid-template-columns: 112px minmax(0, 1fr);
    column-gap: 44px;
    row-gap: 0;
    padding: 52px 0;
  }

  .page-about .about-rail {
    grid-column: 1;
    grid-row: 1;
    position: sticky;
    top: 40px;
    align-self: start;
    padding-top: 8px;
  }

  .page-about .about-head {
    grid-column: 2;
    grid-row: 1;
  }

  .page-about .about-body {
    grid-column: 2;
    grid-row: 2;
    margin-top: 22px;
  }

  .page-about .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .archive-timeline {
    padding-left: 32px;
  }

  .page-about .timeline-item,
  .page-about .timeline-media {
    padding-bottom: 36px;
  }
}