/* ===== 品牌故事页专属 CSS ===== */
.page-about {
  background: var(--sx-cream);
  color: var(--sx-ink);
  font-family: var(--sx-font-body);
  line-height: 1.7;
  overflow-x: clip;
}

/* ===== 封面首屏 ===== */
.page-about .pg-cover {
  position: relative;
  background: var(--sx-blue);
  color: #fff;
  padding: 2rem 0 4.5rem;
  overflow: hidden;
}

.page-about .pg-cover::before {
  content: "";
  position: absolute;
  top: 0;
  right: -8%;
  width: 46%;
  height: 100%;
  background: var(--sx-red);
  transform: skewX(-14deg);
  opacity: 0.95;
  z-index: 0;
}

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

.page-about .pg-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--sx-font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 2.2rem;
}

.page-about .pg-breadcrumb__item {
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  transition: color 0.2s var(--sx-ease);
}

.page-about .pg-breadcrumb__item[aria-current="page"] {
  color: var(--sx-yellow);
  font-weight: 600;
}

.page-about .pg-breadcrumb__item:hover,
.page-about .pg-breadcrumb__item:focus-visible {
  color: var(--sx-yellow);
}

.page-about .pg-cover__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}

.page-about .pg-cover__kicker {
  font-family: var(--sx-font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sx-yellow);
  margin-bottom: 1rem;
}

.page-about .pg-cover__title {
  font-family: var(--sx-font-display);
  font-size: clamp(2.2rem, 6vw, 4.4rem);
  line-height: 1.1;
  margin: 0 0 1.2rem;
  transform: skew(-3deg);
  animation: pg-cover-in 0.6s var(--sx-ease) both;
}

@keyframes pg-cover-in {
  from {
    opacity: 0;
    transform: skew(-3deg) translateY(14px);
  }
  to {
    opacity: 1;
    transform: skew(-3deg) translateY(0);
  }
}

.page-about .pg-cover__lead {
  max-width: 34rem;
  font-size: 1.02rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 1.8rem;
}

.page-about .pg-cover__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.6rem;
}

.page-about .pg-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 1.5rem;
  font-family: var(--sx-font-body);
  font-weight: 700;
  font-size: 0.98rem;
  line-height: 1;
  text-decoration: none;
  transform: skew(-4deg);
  border: 2px solid transparent;
  transition: transform 0.25s var(--sx-ease), box-shadow 0.25s var(--sx-ease), border-color 0.25s var(--sx-ease);
  cursor: pointer;
}

.page-about .pg-btn span {
  display: inline-block;
  transform: skew(4deg);
}

.page-about .pg-btn--solid {
  background: var(--sx-red);
  color: #fff;
  border-color: var(--sx-red);
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.25);
}

.page-about .pg-btn--solid:hover,
.page-about .pg-btn--solid:focus-visible {
  box-shadow: 0 6px 18px rgba(239, 74, 42, 0.45);
  transform: skew(-4deg) translateY(-2px);
}

.page-about .pg-btn--ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.55);
}

.page-about .pg-btn--ghost:hover,
.page-about .pg-btn--ghost:focus-visible {
  border-color: var(--sx-yellow);
  color: var(--sx-yellow);
}

.page-about .pg-cover__meta {
  font-family: var(--sx-font-mono);
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.08em;
}

.page-about .pg-cover__visual {
  position: relative;
}

.page-about .pg-cover__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 3px solid var(--sx-yellow);
  box-shadow: 14px 14px 0 rgba(0, 0, 0, 0.22);
  transform: rotate(1.2deg);
  background: var(--sx-gray);
}

.page-about .pg-cover__stamp {
  position: absolute;
  bottom: -0.8rem;
  left: -0.8rem;
  background: var(--sx-yellow);
  color: var(--sx-ink);
  font-family: var(--sx-font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 0.35rem 0.8rem;
  transform: skew(-6deg);
}

/* ===== 主体两栏布局 ===== */
.page-about .pg-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.2rem;
  padding-top: 3rem;
  padding-bottom: 4rem;
}

/* ===== 左侧章节轨 ===== */
.page-about .pg-track {
  background: var(--sx-blue);
  padding: 1.4rem;
  color: #fff;
  align-self: start;
  box-shadow: var(--sx-shadow);
  transform: skew(-1deg);
}

.page-about .pg-track__cap {
  font-family: var(--sx-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--sx-yellow);
  margin: 0 0 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.page-about .pg-track__item {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  padding: 0.55rem 0.2rem;
  border-left: 3px solid transparent;
  transition: border-color 0.2s var(--sx-ease), background 0.2s var(--sx-ease), color 0.2s var(--sx-ease);
}

.page-about .pg-track__item:hover,
.page-about .pg-track__item:focus-visible {
  border-left-color: var(--sx-red);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.page-about .pg-track__no {
  font-family: var(--sx-font-mono);
  font-size: 0.85rem;
  color: var(--sx-yellow);
  min-width: 1.4rem;
}

.page-about .pg-track__label {
  font-size: 0.95rem;
  font-weight: 600;
}

/* ===== 文档 ===== */
.page-about .pg-doc {
  min-width: 0;
}

/* ===== 章节通用 ===== */
.page-about .pg-sec {
  margin-bottom: 4.5rem;
}

.page-about .pg-sec__head {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.8rem;
}

.page-about .pg-sec__no {
  font-family: var(--sx-font-display);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1;
  color: var(--sx-red);
  transform: skew(-8deg);
  opacity: 0.8;
}

.page-about .pg-sec__kicker {
  font-family: var(--sx-font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  color: var(--sx-orange);
  margin: 0 0 0.3rem;
  text-transform: uppercase;
}

.page-about .pg-sec__title {
  font-family: var(--sx-font-display);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.2;
  margin: 0;
  color: var(--sx-ink);
}

/* ===== 第一章 · 从广西出发 ===== */
.page-about .pg-sec--origin {
  background: var(--sx-cream);
}

.page-about .pg-sec__cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-about .pg-sec__text p {
  margin: 0 0 1.1em;
  font-size: 1rem;
  line-height: 1.85;
}

.page-about .pg-sec__aside {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.page-about .pg-mini {
  background: var(--sx-gray);
  padding: 1.3rem;
  border-radius: var(--sx-radius);
  box-shadow: 0 2px 0 rgba(11, 31, 51, 0.08);
}

.page-about .pg-mini__label {
  display: block;
  font-family: var(--sx-font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--sx-blue);
  margin-bottom: 0.8rem;
}

.page-about .pg-teamviz {
  display: flex;
  height: 50px;
  overflow: hidden;
  border-radius: var(--sx-radius);
}

.page-about .pg-teamviz__tech,
.page-about .pg-teamviz__edit {
  flex: 1 1 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  color: #fff;
  font-family: var(--sx-font-display);
}

.page-about .pg-teamviz__tech {
  background: var(--sx-red);
}

.page-about .pg-teamviz__edit {
  background: var(--sx-blue);
}

.page-about .pg-teamviz__num {
  font-size: 1.5rem;
  transform: skew(-6deg);
}

.page-about .pg-teamviz__unit {
  font-family: var(--sx-font-mono);
  font-size: 0.85rem;
  opacity: 0.8;
}

.page-about .pg-mini__note {
  font-family: var(--sx-font-mono);
  font-size: 0.8rem;
  color: var(--sx-ink);
  margin: 0.7rem 0 0;
}

.page-about .pg-inline-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--sx-red);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  padding-bottom: 0.2rem;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s var(--sx-ease), color 0.2s var(--sx-ease);
}

.page-about .pg-inline-link:hover,
.page-about .pg-inline-link:focus-visible {
  border-bottom-color: var(--sx-red);
  color: var(--sx-blue);
}

/* ===== 第二章 · 改版时间线 ===== */
.page-about .pg-sec--timeline {
  background: var(--sx-blue);
  color: #fff;
  margin: 0 -1.25rem;
  padding: 3rem 1.25rem 3.5rem;
  box-shadow: var(--sx-shadow);
  overflow: hidden;
}

.page-about .pg-sec--timeline .pg-sec__title {
  color: #fff;
}

.page-about .pg-sec--timeline .pg-sec__no {
  color: var(--sx-yellow);
}

.page-about .pg-sec--timeline .pg-sec__kicker {
  color: rgba(255, 255, 255, 0.6);
}

.page-about .pg-timeline {
  position: relative;
  margin-top: 2rem;
  padding-left: 1.8rem;
}

.page-about .pg-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--sx-red) 0%, var(--sx-yellow) 100%);
}

.page-about .pg-timeline__item {
  position: relative;
  margin-bottom: 1.6rem;
}

.page-about .pg-timeline__dot {
  position: absolute;
  left: -1.75rem;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--sx-red);
  box-shadow: 0 0 0 4px rgba(239, 74, 42, 0.22);
  z-index: 1;
}

.page-about .pg-timeline__dot--live {
  background: var(--sx-green);
  box-shadow: 0 0 0 5px rgba(46, 158, 107, 0.25);
}

.page-about .pg-timeline__card {
  background: rgba(255, 255, 255, 0.07);
  border-left: 3px solid rgba(255, 255, 255, 0.25);
  padding: 1rem 1.1rem;
  border-radius: 0 var(--sx-radius) var(--sx-radius) 0;
  transition: background 0.25s var(--sx-ease);
}

.page-about .pg-timeline__card:hover {
  background: rgba(255, 255, 255, 0.13);
}

.page-about .pg-timeline__card--highlight {
  background: rgba(46, 158, 107, 0.16);
  border-left-color: var(--sx-green);
}

.page-about .pg-timeline__phase {
  display: inline-block;
  font-family: var(--sx-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sx-yellow);
  margin-bottom: 0.35rem;
}

.page-about .pg-timeline__name {
  font-family: var(--sx-font-display);
  font-size: 1.02rem;
  line-height: 1.4;
  margin: 0 0 0.5rem;
  color: #fff;
}

.page-about .pg-timeline__desc {
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
}

.page-about .pg-timeline__tag {
  display: inline-block;
  margin-top: 0.7rem;
  background: var(--sx-green);
  color: #fff;
  font-family: var(--sx-font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  transform: skew(-4deg);
}

.page-about .pg-timeline__photo {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  margin-top: 2.2rem;
  border-radius: var(--sx-radius);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
  border: 2px solid rgba(255, 255, 255, 0.18);
}

/* ===== 第三章 · 数据观 ===== */
.page-about .pg-sec--dataview {
  padding-top: 1rem;
}

.page-about .pg-dataview__intro {
  max-width: 46rem;
  font-size: 1.02rem;
  line-height: 1.9;
  margin-bottom: 2rem;
}

.page-about .pg-dataview__intro p {
  margin: 0 0 1em;
}

.page-about .pg-dataview__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.page-about .pg-dataview__graphic {
  position: relative;
}

.page-about .pg-dataview__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--sx-radius);
  box-shadow: var(--sx-shadow);
  border: 2px solid var(--sx-blue);
}

.page-about .pg-dataview__principles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .pg-principle {
  position: relative;
  padding: 1.4rem 1.4rem 1.3rem;
  border-radius: var(--sx-radius);
  border: 1px solid transparent;
  transition: transform 0.25s var(--sx-ease), box-shadow 0.25s var(--sx-ease);
}

.page-about .pg-principle:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 24px rgba(11, 31, 51, 0.12);
}

.page-about .pg-principle--sky {
  background: var(--sx-blue);
  color: #fff;
}

.page-about .pg-principle--sun {
  background: var(--sx-yellow);
  color: var(--sx-ink);
}

.page-about .pg-principle--sand {
  background: var(--sx-gray);
  color: var(--sx-ink);
}

.page-about .pg-principle__no {
  font-family: var(--sx-font-mono);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  display: block;
  margin-bottom: 0.8rem;
  opacity: 0.35;
  transform: skew(-8deg);
}

.page-about .pg-principle__title {
  font-family: var(--sx-font-display);
  font-size: 1.15rem;
  line-height: 1.4;
  margin: 0 0 0.5rem;
}

.page-about .pg-principle__text {
  font-size: 0.95rem;
  line-height: 1.8;
  margin: 0;
}

/* ===== 第四章 · 数字旁观 ===== */
.page-about .pg-sec--numbers {
  background: var(--sx-gray);
  margin: 0 -1.25rem;
  padding: 3rem 1.25rem;
  box-shadow: var(--sx-shadow);
}

.page-about .pg-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.page-about .pg-stat {
  background: #fff;
  padding: 1.3rem 1.2rem;
  border-radius: var(--sx-radius);
  box-shadow: 0 2px 10px rgba(11, 31, 51, 0.07);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.4rem;
  min-width: 0;
}

.page-about .pg-stat--dark {
  background: var(--sx-blue);
  color: #fff;
}

.page-about .pg-stat--light {
  background: #fff;
  color: var(--sx-ink);
}

.page-about .pg-stat--yellow {
  background: var(--sx-yellow);
  color: var(--sx-ink);
}

.page-about .pg-stat--cream {
  background: var(--sx-cream);
  color: var(--sx-ink);
}

.page-about .pg-stat--wide {
  grid-column: 1 / -1;
}

.page-about .pg-stat__num {
  font-family: var(--sx-font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  line-height: 1.1;
  transform: skew(-4deg);
  color: inherit;
}

.page-about .pg-stat--dark .pg-stat__num {
  color: var(--sx-yellow);
}

.page-about .pg-stat__unit {
  font-family: var(--sx-font-mono);
  font-size: 1rem;
  font-weight: 400;
  margin-left: 0.2rem;
}

.page-about .pg-stat__label {
  font-family: var(--sx-font-body);
  font-weight: 700;
  font-size: 0.94rem;
  color: inherit;
}

.page-about .pg-stat__note {
  font-family: var(--sx-font-mono);
  font-size: 0.76rem;
  color: inherit;
  opacity: 0.66;
  margin: 0;
}

.page-about .pg-stat__desc {
  font-size: 0.95rem;
  line-height: 1.75;
  margin: 0;
  color: inherit;
}

.page-about .pg-stat__desc + .pg-inline-link {
  align-self: flex-start;
  margin-top: 0.4rem;
}

/* ===== 第五章 · 合作与认证 ===== */
.page-about .pg-sec--trust {
  padding-top: 1rem;
}

.page-about .pg-trust {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.6rem;
}

.page-about .pg-badge {
  display: flex;
  gap: 1.2rem;
  align-items: flex-start;
  background: var(--sx-blue);
  color: #fff;
  border-radius: var(--sx-radius);
  padding: 1.5rem;
  box-shadow: var(--sx-shadow);
}

.page-about .pg-badge__icon {
  flex: 0 0 52px;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--sx-red);
  color: #fff;
  font-family: var(--sx-font-display);
  font-size: 1rem;
  transform: skew(-6deg);
  border-radius: var(--sx-radius);
}

.page-about .pg-badge__title {
  font-family: var(--sx-font-display);
  font-size: 1.05rem;
  margin: 0 0 0.45rem;
  color: var(--sx-yellow);
}

.page-about .pg-badge__desc {
  font-size: 0.95rem;
  line-height: 1.8;
  margin: 0;
  color: rgba(255, 255, 255, 0.86);
}

.page-about .pg-badge-detail {
  margin-top: 1rem;
  background: var(--sx-cream);
  border-left: 4px solid var(--sx-yellow);
  border-radius: 0 var(--sx-radius) var(--sx-radius) 0;
}

.page-about .pg-badge-detail__sum {
  font-family: var(--sx-font-mono);
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--sx-blue);
  padding: 0.9rem 1rem;
  cursor: pointer;
  list-style: none;
  transition: color 0.2s var(--sx-ease);
}

.page-about .pg-badge-detail__sum:hover,
.page-about .pg-badge-detail__sum:focus-visible {
  color: var(--sx-red);
}

.page-about .pg-badge-detail__sum::before {
  content: "▶ ";
  color: var(--sx-orange);
  display: inline-block;
  transition: transform 0.2s var(--sx-ease);
}

.page-about .pg-badge-detail[open] .pg-badge-detail__sum::before {
  transform: rotate(90deg);
}

.page-about .pg-badge-detail__body {
  padding: 0 1rem 1rem;
  color: var(--sx-ink);
  font-size: 0.92rem;
  line-height: 1.8;
}

.page-about .pg-badge-detail__body p {
  margin: 0;
}

.page-about .pg-trust__side {
  background: var(--sx-cream);
  border-radius: var(--sx-radius);
  padding: 1.5rem;
  border: 1px solid rgba(11, 31, 51, 0.1);
}

.page-about .pg-trust__side-title {
  font-family: var(--sx-font-display);
  font-size: 1.1rem;
  color: var(--sx-blue);
  margin: 0 0 0.6rem;
}

.page-about .pg-trust__side-text {
  font-size: 0.95rem;
  margin: 0 0 1rem;
  line-height: 1.8;
}

.page-about .pg-trust__list {
  margin: 0 0 1.2rem;
  padding-left: 1.2rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.3rem;
}

.page-about .pg-trust__list li {
  font-size: 0.95rem;
  line-height: 1.7;
}

.page-about .pg-trust__list li::marker {
  color: var(--sx-red);
}

.page-about .pg-trust__comm {
  background: var(--sx-yellow);
  color: var(--sx-ink);
  font-size: 0.9rem;
  padding: 0.8rem 1rem;
  border-radius: var(--sx-radius);
  margin: 0;
}

.page-about .pg-trust__cta {
  margin-top: 2rem;
  background: var(--sx-red);
  color: #fff;
  padding: 1.8rem;
  border-radius: var(--sx-radius);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
  box-shadow: 0 8px 24px rgba(239, 74, 42, 0.3);
}

.page-about .pg-trust__cta p {
  font-family: var(--sx-font-display);
  font-size: 1.2rem;
  margin: 0;
  max-width: 30rem;
}

.page-about .pg-trust__cta .pg-btn--solid {
  background: var(--sx-blue);
  border-color: var(--sx-blue);
  color: #fff;
}

/* ===== 响应式增强 ===== */
@media (min-width: 640px) {
  .page-about .pg-cover {
    padding: 2.5rem 0 5rem;
  }

  .page-about .pg-sec--timeline {
    margin: 0 -2rem;
    padding: 4rem 2rem 4rem;
  }

  .page-about .pg-sec__cols {
    grid-template-columns: 1.25fr 1fr;
    gap: 2.5rem;
  }

  .page-about .pg-dataview__principles {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .pg-trust {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }

  .page-about .pg-trust__cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

@media (min-width: 900px) {
  .page-about .pg-cover__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3.5rem;
  }

  .page-about .pg-layout {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 3rem;
  }

  .page-about .pg-track {
    position: sticky;
    top: calc(var(--sx-header-h) + 18px);
    z-index: 8;
  }

  .page-about .pg-sec__head {
    gap: 1.4rem;
    margin-bottom: 2.4rem;
  }
}

@media (min-width: 1100px) {
  .page-about .pg-cover__title {
    font-size: 4.4rem;
  }

  .page-about .pg-cover__lead {
    font-size: 1.08rem;
  }

  .page-about .pg-sec__cols {
    grid-template-columns: 1.3fr 1fr;
    gap: 3rem;
  }

  .page-about .pg-layout {
    grid-template-columns: 220px minmax(0, 1fr);
  }

  .page-about .pg-dataview__grid {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: center;
  }

  .page-about .pg-timeline__item {
    margin-bottom: 1.4rem;
  }
}

/* ===== 更宽的平板与桌面段：时间线由垂直改成交错 ===== */
@media (min-width: 980px) {
  .page-about .pg-timeline {
    padding-left: 0;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 48px minmax(0, 1fr);
    column-gap: 1.4rem;
    row-gap: 1.2rem;
  }

  .page-about .pg-timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .pg-timeline__item {
    margin-bottom: 0;
  }

  .page-about .pg-timeline__item--left {
    grid-column: 1;
    text-align: right;
  }

  .page-about .pg-timeline__item--right {
    grid-column: 3;
  }

  .page-about .pg-timeline__item--left .pg-timeline__card {
    border-left: 0;
    border-right: 3px solid rgba(255, 255, 255, 0.25);
    border-radius: var(--sx-radius) 0 0 var(--sx-radius);
    text-align: right;
  }

  .page-about .pg-timeline__item--left .pg-timeline__card--highlight {
    border-right-color: var(--sx-green);
  }

  .page-about .pg-timeline__dot {
    left: auto;
    top: 50%;
    transform: translateY(-50%);
  }

  .page-about .pg-timeline__item--left .pg-timeline__dot {
    right: -33px;
  }

  .page-about .pg-timeline__item--right .pg-timeline__dot {
    left: -33px;
  }

  .page-about .pg-timeline__photo {
    grid-column: 1 / -1;
    margin-top: 1.4rem;
  }
}

/* ===== 动效：减少动态偏好下的平滑 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* ===== 图片与内容的安全边界 ===== */
.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about .pg-cover__img,
.page-about .pg-timeline__photo,
.page-about .pg-dataview__img {
  max-height: none;
}