.page-about {
  --about-line: rgba(231, 200, 122, .42);
  --about-line-soft: rgba(231, 200, 122, .12);
  --about-glow: rgba(231, 200, 122, .30);
  --about-brush: rgba(200, 220, 255, .045);
  --about-axis-gap: 56px;
}

/* ---------- 首屏：非居中，左侧主题声明 + 右侧节点速跳 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-block: 34px 58px;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(102deg, rgba(255, 255, 255, .035) 0 1px, transparent 1px 7px);
  pointer-events: none;
}

.page-about .about-hero > .shell {
  position: relative;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: start;
  margin-top: 26px;
}

.page-about .about-hero__head .lede {
  margin: 20px 0 0;
  max-width: 33em;
}

.page-about .about-hero__head h1 {
  margin: 12px 0 0;
  overflow-wrap: anywhere;
}

.page-about .about-hero__aside {
  padding: 22px 22px 18px;
  border-radius: var(--radius);
}

.page-about .about-jumps {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .about-jumps a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
  transition: background .16s ease, border-color .16s ease;
}

.page-about .about-jumps a:hover,
.page-about .about-jumps a:focus-visible {
  background: var(--glass);
  border-left-color: var(--gold);
}

.page-about .about-jumps .mono {
  flex: none;
  color: var(--gold);
  font-size: 12px;
  letter-spacing: .1em;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 38px;
  padding-top: 26px;
  border-top: 1px solid var(--glass-line);
}

.page-about .stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .stat__num {
  font-size: 28px;
  line-height: 1.1;
  color: var(--gold);
  font-weight: 500;
  letter-spacing: .02em;
}

.page-about .stat__label {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--muted);
}

/* ---------- 时间轴 ---------- */

.page-about .about-path__lede {
  max-width: 36em;
  margin-top: 16px;
}

.page-about .about-timeline {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin-top: 48px;
}

.page-about .tl-item {
  position: relative;
  padding-bottom: var(--about-axis-gap);
}

.page-about .tl-item:last-child {
  padding-bottom: 0;
}

.page-about .tl-item__mark {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-left: 30px;
  margin-bottom: 14px;
}

.page-about .tl-item__year {
  font-size: 20px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--text);
}

.page-about .tl-item__ver {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--gold);
  opacity: .78;
}

.page-about .tl-item__dot {
  position: absolute;
  left: 0;
  top: 5px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(231, 200, 122, .12), 0 0 16px var(--about-glow);
  transition: background .16s ease;
}

.page-about .tl-item__mark::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 0;
  bottom: calc(-1 * var(--about-axis-gap));
  width: 2px;
  background-image:
    repeating-linear-gradient(180deg, rgba(255, 255, 255, .10) 0 1px, transparent 1px 4px),
    linear-gradient(180deg, var(--about-line), var(--about-line-soft));
}

.page-about .tl-item:first-child .tl-item__mark::after {
  top: 11px;
}

.page-about .tl-item:last-child .tl-item__mark::after {
  bottom: 0;
  background-image:
    repeating-linear-gradient(180deg, rgba(255, 255, 255, .10) 0 1px, transparent 1px 4px),
    linear-gradient(180deg, var(--about-line), transparent 90%);
}

.page-about .tl-item__body {
  padding: 24px 24px 36px;
  background:
    linear-gradient(158deg, var(--about-brush), transparent 46%),
    var(--panel);
  border-top: 2px solid var(--about-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
  transition: background .2s ease, border-color .2s ease;
}

.page-about .tl-item__body h3 {
  margin: 10px 0 14px;
}

.page-about .tl-item__body .prose > p:first-of-type::first-letter {
  float: left;
  font-size: 3em;
  line-height: .88;
  font-weight: 300;
  color: var(--gold);
  padding: 5px 10px 0 0;
}

.page-about .tl-item__links {
  margin-top: 22px;
  gap: 10px;
}

.page-about .tl-item:target .tl-item__body {
  background:
    linear-gradient(158deg, rgba(255, 45, 85, .12), transparent 48%),
    var(--panel);
  border-top-color: var(--red);
}

.page-about .tl-item:target .tl-item__dot {
  background: var(--red);
}

/* 通栏材质停顿 */

.page-about .tl-item--break {
  grid-column: 1 / -1;
  position: relative;
  z-index: 2;
  padding-bottom: var(--about-axis-gap);
}

.page-about .about-break {
  margin: 0;
}

.page-about .about-break .figure__media {
  border-radius: var(--radius);
  overflow: hidden;
}

/* ---------- 图片统一 ---------- */

.page-about .figure__media {
  overflow: hidden;
  border-radius: var(--radius);
}

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

.page-about .figure__cap {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--faint);
  max-width: 46em;
}

/* ---------- 内容治理 ---------- */

.page-about .about-govern__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

.page-about .about-govern__figure {
  margin: 0;
}

.page-about .about-states {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-states__item {
  display: grid;
  gap: 8px;
  padding: 15px 18px;
  background: var(--panel);
  border-left: 3px solid var(--glass-line);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-about .about-states__item--jade {
  border-left-color: var(--jade);
}

.page-about .about-states__item--amber {
  border-left-color: var(--amber);
}

.page-about .about-states__item--red {
  border-left-color: var(--red);
}

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

.page-about .about-govern__more {
  margin: 22px 0 0;
  font-size: 14px;
}

.page-about .about-govern__more a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 123, 255, .4);
  padding-bottom: 2px;
}

.page-about .about-govern__more a:hover,
.page-about .about-govern__more a:focus-visible {
  border-bottom-color: var(--blue);
}

/* ---------- 地域与值守 ---------- */

.page-about .about-place__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  align-items: center;
}

.page-about .about-place__figure {
  margin: 0;
}

.page-about .about-place__contact {
  margin-top: 24px;
  padding: 18px 20px;
  background: var(--glass);
  border: 1px solid var(--glass-line);
  border-radius: var(--radius);
}

.page-about .about-place__contact .eyebrow {
  margin: 0 0 8px;
}

.page-about .about-place__addr {
  margin: 0;
  font-size: 17px;
  line-height: 1.7;
  color: var(--text);
  letter-spacing: .02em;
}

.page-about .about-next {
  margin-top: 30px;
  padding-top: 26px;
  border-top: 1px solid var(--glass-line);
  gap: 12px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .stat__num {
    font-size: 32px;
  }
}

@media (min-width: 860px) {
  .page-about .about-hero {
    padding-block: 46px 72px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, .85fr);
    gap: 42px;
  }

  .page-about .tl-item {
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    column-gap: 36px;
    align-items: start;
  }

  .page-about .tl-item__mark {
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
    padding-left: 0;
    padding-right: 26px;
    margin-bottom: 0;
  }

  .page-about .tl-item__ver {
    writing-mode: vertical-rl;
    letter-spacing: .30em;
    font-size: 11px;
  }

  .page-about .tl-item__dot {
    left: auto;
    right: -6px;
    top: 6px;
  }

  .page-about .tl-item__mark::after {
    left: auto;
    right: 0;
  }

  .page-about .tl-item:first-child .tl-item__mark::after {
    top: 12px;
  }

  .page-about .tl-item__body {
    padding: 28px 32px 44px;
  }

  .page-about .tl-item--break {
    padding-bottom: var(--about-axis-gap);
  }
}

@media (min-width: 960px) {
  .page-about .about-govern__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: 52px;
    align-items: start;
  }

  .page-about .about-place__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-jumps a,
  .page-about .tl-item__body,
  .page-about .tl-item__dot {
    transition-duration: .01ms;
  }
}