.page-about {
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(13, 31, 60, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13, 31, 60, 0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  position: relative;
  overflow-x: hidden;
}

.page-about h2 {
  font-family: var(--font-head);
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 10px 0 18px;
  padding-bottom: 10px;
  position: relative;
}

.page-about h2::after {
  content: "";
  display: block;
  width: 52px;
  height: 4px;
  background: var(--orange);
  margin-top: 12px;
}

.page-about .site-eyelet {
  color: var(--orange);
  margin-bottom: 8px;
}

/* ---------- 首屏海报 ---------- */
.page-about .about-hero {
  position: relative;
  background: var(--navy);
  color: var(--paper);
  padding: 40px 0 56px;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "DESK";
  position: absolute;
  right: -16px;
  bottom: -10px;
  font-family: var(--font-head);
  font-size: 120px;
  line-height: 1;
  color: rgba(245, 240, 230, 0.05);
  transform: rotate(-6deg);
  letter-spacing: -0.04em;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 6px;
  background: var(--orange);
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gray);
  margin-bottom: 32px;
}

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

.page-about .about-breadcrumb a:hover {
  text-decoration: underline;
}

.page-about .about-breadcrumb [aria-current="page"] {
  color: var(--paper);
}

.page-about .about-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 12px 0 20px;
  max-width: 11em;
}

.page-about .about-hero__lead {
  font-size: 17px;
  line-height: 1.7;
  color: rgba(245, 240, 230, 0.85);
  max-width: 42em;
  margin: 0 0 32px;
}

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

.page-about .about-hero__stat {
  background: var(--inkblue);
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 14px 18px;
  min-width: 140px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

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

.page-about .about-hero__num {
  font-family: var(--font-head);
  font-size: 28px;
  color: var(--orange);
}

.page-about .about-hero__label {
  font-family: var(--font-mono);
  font-size: 13px;
  color: rgba(245, 240, 230, 0.7);
}

/* ---------- 页内快速导航 ---------- */
.page-about .about-jump {
  background: var(--white);
  border-bottom: 1px solid var(--gray);
  padding: 12px 0;
  overflow-x: auto;
}

.page-about .about-jump__inner {
  display: flex;
  gap: 20px;
  white-space: nowrap;
}

.page-about .about-jump a {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--navy);
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

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

/* ---------- 品牌故事 ---------- */
.page-about .about-story {
  padding: 64px 0 56px;
}

.page-about .about-story__grid {
  align-items: start;
}

.page-about .about-story__main h2 {
  margin-top: 4px;
}

.page-about .site-prose p {
  margin: 0 0 16px;
  line-height: 1.75;
  color: var(--ink);
  font-size: 16px;
}

.page-about .about-story__trust {
  background: rgba(255, 107, 53, 0.08);
  border-left: 4px solid var(--orange);
  padding: 14px 16px;
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-story__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-story__aside {
  position: relative;
}

.page-about .about-story__card {
  background: var(--white);
  border-top: 6px solid var(--navy);
  box-shadow: var(--shadow);
  padding: 28px 24px;
  transform: rotate(0.6deg);
  position: relative;
}

.page-about .about-story__card::before {
  content: "";
  position: absolute;
  top: -6px;
  right: -6px;
  width: 18px;
  height: 18px;
  background: var(--orange);
}

.page-about .about-story__card p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
  padding-left: 14px;
  border-left: 2px solid var(--gray);
}

/* ---------- 发展里程碑时间轴 ---------- */
.page-about .about-timeline {
  padding: 64px 0;
  background:
    repeating-linear-gradient(
      0deg,
      rgba(13, 31, 60, 0.028) 0,
      rgba(13, 31, 60, 0.028) 1px,
      transparent 1px,
      transparent 40px
    ),
    var(--paper);
}

.page-about .about-timeline__heading p {
  max-width: 36em;
  line-height: 1.6;
  color: var(--ink);
  margin: 0;
}

.page-about .about-timeline__hero {
  margin: 32px 0 48px;
}

.page-about .about-timeline__hero img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 6px solid var(--navy);
  box-shadow: 10px 10px 0 rgba(13, 31, 60, 0.08);
}

.page-about .about-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: linear-gradient(var(--navy), var(--orange));
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 56px;
  margin-bottom: 28px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--paper);
  border: 4px solid var(--navy);
  box-shadow: 0 0 0 2px var(--orange);
}

.page-about .about-timeline__year {
  font-family: var(--font-head);
  font-size: 26px;
  color: var(--orange);
  line-height: 1;
  margin-bottom: 10px;
}

.page-about .about-timeline__card {
  background: var(--white);
  border-left: 5px solid var(--navy);
  padding: 18px 18px 16px;
  box-shadow: 6px 6px 0 rgba(13, 31, 60, 0.06);
  transition: box-shadow 0.2s, transform 0.2s;
}

.page-about .about-timeline__card:hover {
  box-shadow: 6px 10px 0 rgba(255, 107, 53, 0.18);
  transform: translateY(-2px);
}

.page-about .about-timeline__marker {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
  margin-right: 6px;
}

.page-about .about-timeline__card h3 {
  font-family: var(--font-head);
  font-size: 16px;
  color: var(--navy);
  margin: 0 0 6px;
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: 14px;
  color: var(--ink);
  line-height: 1.6;
}

.page-about .about-timeline__extra {
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px dashed var(--gray);
  font-size: 13px;
  color: var(--inkblue);
  line-height: 1.5;
  opacity: 0.85;
  transition: opacity 0.2s, padding-left 0.2s;
}

.page-about .about-timeline__card:hover .about-timeline__extra {
  opacity: 1;
  padding-left: 10px;
}

/* ---------- 团队规模与构成 ---------- */
.page-about .about-team {
  padding: 64px 0;
  background:
    linear-gradient(rgba(245, 240, 230, 0.03) 1px, transparent 1px),
    var(--inkblue);
  background-size: 32px 32px;
  color: var(--paper);
}

.page-about .about-team .site-eyelet {
  color: var(--orange);
}

.page-about .about-team h2 {
  color: var(--paper);
}

.page-about .about-team__heading p {
  max-width: 34em;
  color: rgba(245, 240, 230, 0.78);
  line-height: 1.6;
  margin: 0;
}

.page-about .about-team__layout {
  margin-top: 36px;
  display: grid;
  gap: 32px;
}

.page-about .about-team__svg {
  width: 100%;
  height: auto;
  background: rgba(245, 240, 230, 0.04);
  border: 1px solid rgba(245, 240, 230, 0.12);
  padding: 12px;
}

.page-about .about-team__box--navy {
  fill: var(--navy);
}

.page-about .about-team__box--orange {
  fill: var(--orange);
}

.page-about .about-team__box--ink {
  fill: var(--inkblue);
}

.page-about .about-team__svgtitle {
  font-family: var(--font-head);
  font-size: 16px;
  text-anchor: middle;
}

.page-about .about-team__svgcount {
  font-family: var(--font-mono);
  font-size: 14px;
  text-anchor: middle;
}

.page-about .about-team__svgsub {
  font-family: var(--font-mono);
  font-size: 13px;
  text-anchor: middle;
}

.page-about .about-team__svgtitle--light,
.page-about .about-team__svgsub--light {
  fill: var(--paper);
}

.page-about .about-team__svgtitle--dark,
.page-about .about-team__svgcount--dark {
  fill: var(--navy);
}

.page-about .about-team__svgcount--orange {
  fill: var(--orange);
}

.page-about .about-team__sline {
  stroke: var(--blue);
  stroke-width: 2;
  stroke-dasharray: 4 4;
}

.page-about .about-team__content {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-about .about-team__pic {
  border: 6px solid var(--paper);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.15);
  transform: rotate(-1.2deg);
}

.page-about .about-team__pic img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  transform: rotate(1.2deg);
}

.page-about .about-team__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-team__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.6;
  color: rgba(245, 240, 230, 0.88);
}

.page-about .about-team__list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--orange);
}

/* ---------- 技术能力与资质 ---------- */
.page-about .about-capability {
  padding: 64px 0;
}

.page-about .about-capability__grid {
  display: grid;
  gap: 40px;
}

.page-about .about-capability__intro p {
  line-height: 1.7;
  color: var(--ink);
  margin-bottom: 20px;
}

.page-about .about-capability__badge {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 24px;
}

.page-about .about-capability__badge img {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--navy);
  box-shadow: 6px 6px 0 rgba(13, 31, 60, 0.12);
}

.page-about .about-capability__badge span {
  font-family: var(--font-head);
  font-size: 15px;
  color: var(--navy);
  line-height: 1.4;
}

.page-about .about-capability__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-capability__stat {
  background: var(--white);
  border: 1px solid var(--gray);
  border-top: 4px solid var(--navy);
  padding: 20px 18px;
  box-shadow: var(--shadow);
  transition: transform 0.2s;
}

.page-about .about-capability__stat:hover {
  transform: translateY(-2px);
}

.page-about .about-capability__stat:last-child {
  border-top-color: var(--orange);
}

.page-about .about-capability__num {
  display: block;
  font-family: var(--font-head);
  font-size: 30px;
  color: var(--navy);
}

.page-about .about-capability__desc {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  color: var(--ink);
  line-height: 1.5;
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  padding: 64px 0;
  background: var(--white);
  border-top: 1px solid var(--gray);
  border-bottom: 1px solid var(--gray);
  counter-reset: partner;
}

.page-about .about-partners__heading p {
  max-width: 36em;
  line-height: 1.7;
  color: var(--ink);
  margin: 0;
}

.page-about .about-partners__grid {
  display: grid;
  gap: 20px;
  margin-top: 36px;
}

.page-about .about-partners__card {
  position: relative;
  padding: 28px 22px 22px;
  background: var(--paper);
  border: 1px solid var(--gray);
  transition: box-shadow 0.2s, transform 0.2s;
}

.page-about .about-partners__card:hover {
  box-shadow: 8px 8px 0 rgba(255, 107, 53, 0.16);
  transform: translateY(-2px);
}

.page-about .about-partners__card::before {
  content: counter(partner, decimal-leading-zero);
  position: absolute;
  top: -14px;
  left: 20px;
  background: var(--orange);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 3px 8px;
}

.page-about .about-partners__card h3 {
  font-family: var(--font-head);
  font-size: 18px;
  color: var(--navy);
  margin: 0 0 8px;
}

.page-about .about-partners__card p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink);
  margin: 0;
}

/* ---------- 底部行动区 ---------- */
.page-about .about-cta {
  background: var(--navy);
  color: var(--paper);
  padding: 64px 0;
  text-align: center;
}

.page-about .about-cta h2 {
  color: var(--paper);
}

.page-about .about-cta h2::after {
  margin-left: auto;
  margin-right: auto;
}

.page-about .about-cta p {
  max-width: 36em;
  margin: 0 auto 28px;
  color: rgba(245, 240, 230, 0.85);
  line-height: 1.7;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.page-about .about-cta .site-btn--ghost {
  border: 1px solid rgba(245, 240, 230, 0.6);
  color: var(--paper);
}

/* ---------- 响应式布局 ---------- */
@media (min-width: 640px) {
  .page-about .about-capability__stats {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .about-team__content {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
}

@media (min-width: 768px) {
  .page-about .about-timeline__list::before {
    left: 120px;
  }

  .page-about .about-timeline__item {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 32px;
    padding-left: 0;
    margin-bottom: 32px;
  }

  .page-about .about-timeline__item::before {
    left: 108px;
    top: 4px;
    width: 24px;
    height: 24px;
  }

  .page-about .about-timeline__year {
    margin: 0;
    text-align: right;
    font-size: 32px;
  }

  .page-about .about-team__layout {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }
}

@media (min-width: 900px) {
  .page-about .about-partners__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-capability__grid {
    grid-template-columns: 1fr 1.2fr;
    gap: 56px;
  }

  .page-about .about-capability__badge img {
    width: 150px;
    height: 150px;
  }

  .page-about .about-hero {
    padding: 56px 0 64px;
  }
}