.page-about {
  --about-deep: #0A1F3C;
  --about-gold: #D4A843;
  --about-orange: #F27023;
  --about-ivory: #F7F3E9;
  --about-stone: #E8E4DA;
  --about-moss: #5A6B4E;
  --about-terra: #A65C3B;
  --about-ink: #222222;
  --about-gray: #666666;
  --about-white: #FFFFFF;
  font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  color: var(--about-ink);
  background-color: var(--about-ivory);
  position: relative;
  min-height: 100vh;
}

.page-about .about-shell {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
}

.page-about .about-hero {
  position: relative;
  background-color: var(--about-deep);
  color: var(--about-white);
  padding: 56px 32px 64px;
  margin: 24px 0 0;
  overflow: hidden;
  border: 1px solid rgba(212, 168, 67, 0.4);
  box-shadow: 12px 12px 0 rgba(10, 31, 60, 0.12);
}

.page-about .about-hero-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.page-about .grid-vline,
.page-about .grid-hline {
  position: absolute;
  background-color: rgba(212, 168, 67, 0.15);
}

.page-about .grid-vline {
  width: 1px;
  top: 0;
  bottom: 0;
}

.page-about .grid-vline.v1 {
  left: 25%;
}

.page-about .grid-vline.v2 {
  left: 62%;
}

.page-about .grid-hline {
  height: 1px;
  left: 0;
  right: 0;
}

.page-about .grid-hline.h1 {
  top: 24px;
}

.page-about .grid-hline.h2 {
  bottom: 32px;
}

.page-about .grid-coord {
  position: absolute;
  font-size: 10px;
  letter-spacing: 2px;
  color: rgba(212, 168, 67, 0.55);
  font-weight: 400;
}

.page-about .grid-coord.coord-01 {
  top: 30px;
  right: 36px;
}

.page-about .grid-coord.coord-02 {
  bottom: 38px;
  left: 28px;
}

.page-about .grid-coord.coord-03 {
  bottom: 38px;
  right: 36px;
  letter-spacing: 1px;
}

.page-about .breadcrumbs {
  position: relative;
  z-index: 2;
  margin-bottom: 36px;
}

.page-about .breadcrumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.65);
}

.page-about .breadcrumbs a {
  color: var(--about-gold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, color 0.25s ease;
}

.page-about .breadcrumbs a:hover {
  border-bottom-color: var(--about-gold);
  color: var(--about-white);
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  max-width: 1080px;
}

.page-about .about-hero-text {
  max-width: 640px;
}

.page-about .section-label {
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--about-gold);
  position: relative;
  display: inline-block;
  padding-left: 18px;
}

.page-about .section-label::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 10px;
  height: 2px;
  background-color: var(--about-gold);
}

.page-about .label-gold {
  color: var(--about-gold);
}

.page-about .about-hero h1 {
  margin: 0 0 20px;
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: 2px;
  color: var(--about-white);
  max-width: 700px;
}

.page-about .about-hero-lead {
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  max-width: 560px;
}

.page-about .about-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  padding: 16px 0 0;
  border-top: 1px solid rgba(212, 168, 67, 0.35);
}

.page-about .meta-item {
  font-size: 13px;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.7);
}

.page-about .meta-item strong {
  display: block;
  font-size: 20px;
  font-weight: 900;
  color: var(--about-gold);
  margin-top: 4px;
  letter-spacing: 0;
}

.page-about .about-hero-visual {
  position: relative;
  max-width: 600px;
}

.page-about .hero-map-card {
  margin: 0;
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background-color: rgba(255, 255, 255, 0.04);
  padding: 12px 12px 32px;
}

.page-about .hero-imagery {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.8) contrast(1.05);
}

.page-about .map-card-caption {
  position: absolute;
  right: 20px;
  bottom: 20px;
  left: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--about-deep);
  border: 1px solid rgba(212, 168, 67, 0.4);
  padding: 10px 14px;
}

.page-about .caption-tag {
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--about-gold);
  font-weight: 700;
}

.page-about .caption-desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.85);
}

/* 主体布局 */
.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: 80px;
  position: relative;
}

.page-about .about-index {
  display: none;
}

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

.page-about .about-section {
  margin-bottom: 88px;
  position: relative;
  scroll-margin-top: 30px;
}

/* 章节标题通用 */
.page-about .section-heading-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 36px;
  border-bottom: 2px solid var(--about-deep);
  padding-bottom: 18px;
  position: relative;
}

.page-about .section-index {
  font-size: 14px;
  font-weight: 900;
  color: var(--about-orange);
  background-color: var(--about-deep);
  padding: 6px 10px;
  letter-spacing: 1px;
  line-height: 1;
  flex-shrink: 0;
}

.page-about .section-title-wrap {
  flex: 1;
}

.page-about .section-title-wrap .section-label {
  margin-bottom: 8px;
  color: var(--about-moss);
}

.page-about .section-title-wrap h2 {
  margin: 0;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 900;
  letter-spacing: 2px;
  color: var(--about-deep);
  line-height: 1.3;
}

.page-about .heading-rule {
  display: none;
}

/* 品牌故事 */
.page-about .story-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
}

.page-about .story-main .story-lead {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.7;
  color: var(--about-deep);
  border-left: 4px solid var(--about-gold);
  padding-left: 18px;
  margin: 0 0 20px;
}

.page-about .story-main p:not(.story-lead) {
  font-size: 15px;
  line-height: 1.9;
  color: var(--about-gray);
  margin: 0 0 16px;
}

.page-about .story-note {
  background-color: var(--about-deep);
  color: rgba(255, 255, 255, 0.9);
  padding: 16px 20px;
  font-size: 14px;
  line-height: 1.8;
  margin-top: 24px;
  border-left: 3px solid var(--about-orange);
  max-width: 520px;
}

.page-about .story-aside {
  position: relative;
}

.page-about .paper-stack {
  position: relative;
  max-width: 420px;
  padding: 24px 0 0 24px;
}

.page-about .paper-sheet {
  display: block;
  background-color: var(--about-white);
  border: 1px solid rgba(10, 31, 60, 0.2);
  padding: 28px;
  position: relative;
}

.page-about .sheet-back {
  position: absolute;
  inset: 8px 8px -8px -8px;
  background-color: var(--about-stone);
  border: 1px solid rgba(10, 31, 60, 0.12);
  z-index: 0;
}

.page-about .sheet-mid {
  position: absolute;
  inset: 4px 4px -4px -4px;
  background-color: var(--about-ivory);
  border: 1px solid rgba(10, 31, 60, 0.15);
  z-index: 1;
}

.page-about .sheet-front {
  z-index: 2;
  box-shadow: none;
}

.page-about .paper-label {
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--about-gold);
  font-weight: 700;
  margin: 0 0 20px;
  text-transform: uppercase;
  border-bottom: 1px solid rgba(10, 31, 60, 0.1);
  padding-bottom: 12px;
}

.page-about .paper-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .paper-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(10, 31, 60, 0.12);
  gap: 16px;
}

.page-about .paper-list li:last-child {
  border-bottom: none;
}

.page-about .paper-list span {
  font-size: 13px;
  color: var(--about-gray);
}

.page-about .paper-list strong {
  font-size: 14px;
  font-weight: 700;
  color: var(--about-deep);
  text-align: right;
}

/* 里程碑 */
.page-about .timeline-layout {
  position: relative;
  padding-left: 0;
}

.page-about .timeline-rail {
  display: none;
}

.page-about .timeline-list {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-left: 28px;
  border-left: 3px solid var(--about-deep);
}

.page-about .milestone-card {
  position: relative;
  padding: 0 0 36px 8px;
}

.page-about .milestone-card::before {
  content: '';
  position: absolute;
  left: -37px;
  top: 10px;
  width: 13px;
  height: 13px;
  background-color: var(--about-gold);
  border: 3px solid var(--about-deep);
  border-radius: 50%;
}

.page-about .milestone-card::after {
  content: '';
  position: absolute;
  left: -32px;
  top: 14px;
  width: 3px;
  height: calc(100% - 4px);
  background-color: rgba(212, 168, 67, 0.25);
}

.page-about .milestone-card:last-child::after {
  display: none;
}

.page-about .milestone-year {
  display: inline-block;
  background-color: var(--about-deep);
  color: var(--about-gold);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 2px;
  padding: 6px 14px;
  margin-bottom: 14px;
  border: 1px solid rgba(212, 168, 67, 0.4);
}

.page-about .milestone-body {
  background-color: var(--about-white);
  border: 1px solid rgba(10, 31, 60, 0.1);
  padding: 22px 24px;
  box-shadow: 6px 6px 0 rgba(10, 31, 60, 0.06);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.page-about .milestone-body:hover {
  box-shadow: 10px 10px 0 rgba(10, 31, 60, 0.1);
  transform: translate(-2px, -2px);
}

.page-about .milestone-body h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 900;
  color: var(--about-deep);
  letter-spacing: 1px;
}

.page-about .milestone-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-gray);
}

/* 技术架构 */
.page-about .arch-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.page-about .arch-visual {
  position: relative;
  border: 1px solid rgba(10, 31, 60, 0.15);
  background-color: var(--about-deep);
  padding: 12px;
}

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

.page-about .arch-img-index {
  position: absolute;
  top: 20px;
  left: 20px;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--about-gold);
  background-color: rgba(10, 31, 60, 0.85);
  padding: 6px 10px;
}

.page-about .arch-content .arch-lead {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.8;
  color: var(--about-deep);
  margin: 0 0 28px;
  border-bottom: 1px solid rgba(10, 31, 60, 0.12);
  padding-bottom: 18px;
}

.page-about .arch-list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
}

.page-about .arch-list li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px 0;
  border-bottom: 1px dashed rgba(10, 31, 60, 0.12);
}

.page-about .arch-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background-color: var(--about-gold);
  color: var(--about-deep);
  font-weight: 900;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.page-about .arch-item-text h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 900;
  color: var(--about-deep);
}

.page-about .arch-item-text p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-gray);
}

.page-about .arch-note {
  font-size: 13px;
  color: var(--about-moss);
  line-height: 1.8;
  background-color: var(--about-stone);
  border-left: 3px solid var(--about-moss);
  padding: 14px 18px;
  margin: 0;
}

/* 资质 */
.page-about .cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .cert-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 28px 24px;
  background-color: var(--about-white);
  border: 1px solid rgba(10, 31, 60, 0.12);
  border-top: 4px solid var(--about-gold);
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .cert-card:hover {
  transform: translateY(-4px);
  box-shadow: 8px 8px 0 rgba(10, 31, 60, 0.08);
}

.page-about .cert-seal {
  width: 52px;
  height: 52px;
  background-color: var(--about-deep);
  color: var(--about-gold);
  font-size: 14px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--about-gold);
  border-radius: 50%;
  letter-spacing: 1px;
  flex-shrink: 0;
}

.page-about .cert-info h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 900;
  color: var(--about-deep);
}

.page-about .cert-info p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-gray);
}

.page-about .cert-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--about-orange);
  border: 1px solid var(--about-orange);
  padding: 4px 10px;
  border-radius: 2px;
  align-self: flex-start;
}

.page-about .cert-footer-note {
  font-size: 13px;
  color: var(--about-terra);
  margin: 24px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--about-terra);
}

/* 合作伙伴 */
.page-about .partner-intro {
  max-width: 600px;
  margin-bottom: 28px;
}

.page-about .partner-intro p {
  font-size: 16px;
  line-height: 1.9;
  color: var(--about-gray);
  margin: 0;
}

.page-about .partner-visual {
  position: relative;
  border: 1px solid rgba(10, 31, 60, 0.15);
  background-color: var(--about-deep);
  padding: 12px;
  margin-bottom: 36px;
}

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

.page-about .partner-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .partner-list li {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 22px 0;
  border-bottom: 1px solid rgba(10, 31, 60, 0.1);
}

.page-about .partner-list li:first-child {
  border-top: 1px solid rgba(10, 31, 60, 0.1);
}

.page-about .partner-symbol {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background-color: var(--about-ivory);
  border: 1px solid var(--about-deep);
  color: var(--about-deep);
  font-size: 18px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-about .partner-list h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 900;
  color: var(--about-deep);
}

.page-about .partner-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-gray);
}

/* 重庆联动 */
.page-about .cq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  background-color: var(--about-deep);
  color: rgba(255, 255, 255, 0.9);
  padding: 36px 28px;
  border: 1px solid rgba(212, 168, 67, 0.3);
  position: relative;
  overflow: hidden;
}

.page-about .cq-layout::after {
  content: '';
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 200px;
  height: 200px;
  border: 2px solid rgba(212, 168, 67, 0.15);
  border-radius: 50%;
}

.page-about .cq-text .cq-lead {
  font-size: 20px;
  font-weight: 900;
  color: var(--about-gold);
  margin: 0 0 16px;
  line-height: 1.6;
}

.page-about .cq-text p:not(.cq-lead) {
  font-size: 15px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.8);
  margin: 0 0 14px;
}

.page-about .cq-quote {
  position: relative;
  margin-top: 24px;
  padding: 20px 20px 16px 52px;
  border: 1px solid rgba(212, 168, 67, 0.3);
  max-width: 420px;
}

.page-about .cq-quote .quote-mark {
  position: absolute;
  left: 16px;
  top: 4px;
  font-size: 48px;
  line-height: 1;
  color: var(--about-gold);
  font-family: Georgia, serif;
}

.page-about .cq-quote p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
}

.page-about .cq-rail {
  border-left: 2px solid rgba(212, 168, 67, 0.4);
  padding-left: 24px;
}

.page-about .rail-facts {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.page-about .rail-facts > div {
  padding: 14px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.15);
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.page-about .rail-facts > div:last-child {
  border-bottom: none;
}

.page-about .rail-facts dt {
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--about-gold);
  font-weight: 700;
}

.page-about .rail-facts dd {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
}

/* 继续了解 */
.page-about .about-next {
  margin-top: 32px;
  background-color: var(--about-white);
  border: 1px solid rgba(10, 31, 60, 0.12);
  border-left: 6px solid var(--about-orange);
  padding: 36px 28px;
}

.page-about .about-next h2 {
  font-size: 26px;
  font-weight: 900;
  color: var(--about-deep);
  margin: 0 0 24px;
  letter-spacing: 2px;
}

.page-about .next-links {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.page-about .next-link-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(10, 31, 60, 0.1);
  text-decoration: none;
  color: var(--about-ink);
  transition: background-color 0.25s ease, padding-left 0.25s ease;
  font-size: 15px;
}

.page-about .next-link-item:first-child {
  border-top: 1px solid rgba(10, 31, 60, 0.1);
}

.page-about .next-link-item:hover {
  background-color: var(--about-ivory);
  padding-left: 12px;
}

.page-about .next-link-num {
  background-color: var(--about-deep);
  color: var(--about-gold);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 1px;
  padding: 4px 8px;
  flex-shrink: 0;
}

.page-about .next-arrow {
  margin-left: auto;
  font-size: 20px;
  color: var(--about-orange);
  transition: transform 0.25s ease;
}

.page-about .next-link-item:hover .next-arrow {
  transform: translateX(4px);
}

/* 滚动显现 */
.page-about [data-reveal] {
  opacity: 1;
  transform: none;
}

.page-about [data-reveal][data-visible] {
  transition: opacity 0.6s ease, transform 0.6s ease;
}

/* 桌面端媒体查询 */
@media (min-width: 768px) {
  .page-about .about-shell {
    padding: 0 40px;
  }

  .page-about .about-hero {
    padding: 72px 56px 80px;
    margin-top: 40px;
  }

  .page-about .about-hero-inner {
    grid-template-columns: 1.1fr 1fr;
    gap: 48px;
    align-items: center;
  }

  .page-about .about-hero h1 {
    font-size: clamp(32px, 4vw, 46px);
  }

  .page-about .story-grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: start;
  }

  .page-about .arch-grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 48px;
    align-items: center;
  }

  .page-about .cert-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }

  .page-about .cert-card {
    flex-direction: column;
    height: 100%;
  }

  .page-about .partner-list li {
    padding: 26px 0;
  }

  .page-about .cq-layout {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    padding: 48px 40px;
  }

  .page-about .next-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 36px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-layout {
    grid-template-columns: 220px 1fr;
    gap: 48px;
    margin-top: 72px;
    align-items: start;
  }

  .page-about .about-index {
    display: block;
    position: sticky;
    top: 24px;
    z-index: 5;
    border-top: 4px solid var(--about-deep);
    border-bottom: 1px solid rgba(10, 31, 60, 0.2);
    background-color: rgba(247, 243, 233, 0.95);
  }

  .page-about .index-sticky {
    padding: 18px 0;
  }

  .page-about .index-heading {
    font-size: 11px;
    letter-spacing: 3px;
    color: var(--about-gray);
    margin: 0 0 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(10, 31, 60, 0.15);
    font-weight: 700;
  }

  .page-about .index-list {
    list-style: none;
    margin: 0;
    padding: 0;
  }

  .page-about .index-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 0;
    border-bottom: 1px dashed rgba(10, 31, 60, 0.08);
  }

  .page-about .index-list li:last-child {
    border-bottom: none;
  }

  .page-about .index-list a {
    text-decoration: none;
    color: var(--about-deep);
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: baseline;
    gap: 8px;
    width: 100%;
    transition: color 0.2s ease;
  }

  .page-about .index-list a:hover {
    color: var(--about-orange);
  }

  .page-about .index-list .index-num {
    font-size: 11px;
    font-weight: 900;
    color: var(--about-gold);
    letter-spacing: 0.5px;
  }

  .page-about .timeline-rail {
    display: block;
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 44px;
  }

  .page-about .timeline-rail .rail-line {
    position: absolute;
    left: 20px;
    top: 6px;
    bottom: 6px;
    width: 3px;
    background-color: var(--about-deep);
  }

  .page-about .timeline-rail .rail-dot {
    position: absolute;
    width: 14px;
    height: 14px;
    background-color: var(--about-gold);
    border: 3px solid var(--about-deep);
    border-radius: 50%;
    left: 14px;
  }

  .page-about .timeline-rail .rail-dot.dot-2016 {
    top: 0;
  }

  .page-about .timeline-rail .rail-dot.dot-2018 {
    top: 25%;
  }

  .page-about .timeline-rail .rail-dot.dot-2020 {
    top: 50%;
  }

  .page-about .timeline-rail .rail-dot.dot-2022 {
    top: 75%;
  }

  .page-about .timeline-rail .rail-dot.dot-2024 {
    bottom: 0;
    top: auto;
  }

  .page-about .timeline-layout {
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 0;
    padding-left: 0;
  }

  .page-about .timeline-list {
    border-left: none;
    padding-left: 0;
  }

  .page-about .milestone-card {
    padding: 0 0 36px 0;
  }

  .page-about .milestone-card::before,
  .page-about .milestone-card::after {
    display: none;
  }

  .page-about .about-section {
    margin-bottom: 110px;
  }
}

@media (min-width: 1280px) {
  .page-about .about-shell {
    padding: 0 56px;
  }

  .page-about .arch-grid {
    gap: 64px;
  }

  .page-about .arch-content {
    padding-left: 24px;
  }

  .page-about .milestone-body {
    padding: 26px 32px;
    max-width: 720px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .milestone-body,
  .page-about .cert-card,
  .page-about .next-link-item,
  .page-about .next-arrow {
    transition: none;
    transform: none;
  }
}