.page-about {
  --about-rail: 92px;
  --about-nav-offset: 104px;
  background: var(--canvas);
  color: var(--ink);
  overflow-x: hidden;
}

/* ---------- 首屏框景 ---------- */
.page-about .about-hero {
  padding: clamp(20px, 4vw, 44px) 0 clamp(36px, 6vw, 72px);
}

.page-about .about-hero__frame {
  position: relative;
  padding: clamp(34px, 5.4vw, 64px) clamp(18px, 4vw, 52px);
  background: linear-gradient(180deg, #ffffff 0%, var(--canvas) 100%);
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
}

.page-about .about-hero__frame::before,
.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 11px;
  background: repeating-linear-gradient(to right, var(--rule) 0 1px, transparent 1px 22px);
  pointer-events: none;
}

.page-about .about-hero__frame::before { top: 0; }
.page-about .about-hero__frame::after { bottom: 0; }

.page-about .about-hero .frame__label {
  position: absolute;
  top: -9px;
  left: clamp(18px, 4vw, 52px);
  padding: 0 10px;
  background: var(--canvas);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--green);
  text-transform: uppercase;
}

.page-about .about-hero .kicker {
  margin: 0 0 14px;
}

.page-about .about-hero h1 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--fs-h1);
  line-height: 1.12;
  letter-spacing: -0.022em;
  max-width: 17ch;
  color: var(--ink);
}

.page-about .about-hero__lead {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: clamp(16px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--ink);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(26px, 4vw, 44px);
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow: hidden;
}

.page-about .about-hero__facts .stat {
  background: var(--canvas);
  padding: 14px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-hero__facts .stat__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.1;
  color: var(--green-900);
  letter-spacing: -0.01em;
}

.page-about .about-hero__facts .stat__label {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 阶段刻度导航 ---------- */
.page-about .stage-nav {
  background: var(--green-100);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.page-about .stage-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(12px, 3vw, 34px);
  margin: 0;
  padding: 14px 0 12px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .stage-nav__item { flex: 0 0 auto; }

.page-about .stage-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding-bottom: 3px;
  white-space: nowrap;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 14px;
  color: var(--green-900);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-about .stage-nav__link:hover,
.page-about .stage-nav__link:focus-visible {
  border-bottom-color: var(--gold);
  color: var(--ink);
}

.page-about .stage-nav__n {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--gold);
}

/* ---------- 阶段通用 ---------- */
.page-about .stage {
  padding: clamp(46px, 7.5vw, 92px) 0;
}

.page-about .stage--tint { background: var(--green-100); }

.page-about .stage--dark {
  background: var(--green-900);
  color: #ffffff;
}

.page-about .stage__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 36px);
}

.page-about .stage__aside {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-about .stage__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--gold);
}

.page-about .stage__label {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 12.5px;
  letter-spacing: 0.18em;
  color: var(--green);
}

.page-about .stage--dark .stage__label { color: var(--sand); }

.page-about .stage__body h2 {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--fs-h2);
  line-height: 1.16;
  letter-spacing: -0.018em;
  color: var(--ink);
  max-width: 22ch;
}

.page-about .stage--dark .stage__body h2 { color: #ffffff; }

.page-about .stage__body p {
  margin: 0 0 16px;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.82;
  color: var(--ink);
}

.page-about .stage--dark .stage__body p { color: rgba(255, 255, 255, 0.86); }

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

.page-about .stage__body--dense p { margin-bottom: 14px; }

.page-about .stage__body a {
  color: var(--green-900);
  text-decoration: underline;
  text-decoration-color: var(--gold);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-about .stage--dark .stage__body a { color: var(--sand); }

.page-about .stage__body--dense a:hover,
.page-about .stage__body a:hover { color: var(--hot); }

/* ---------- 图像 ---------- */
.page-about .media {
  margin: 0;
  border-radius: 6px;
  overflow: hidden;
  background: linear-gradient(140deg, var(--green-100) 0%, var(--sand) 100%);
}

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

.page-about .media__caption {
  display: block;
  padding: 10px 2px 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .stage--dark .media__caption { color: rgba(255, 255, 255, 0.6); }

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

/* ---------- 阶段分隔刻度线 ---------- */
.page-about .stage-rule {
  position: relative;
  height: 34px;
  margin: 0;
  border: 0;
  background: transparent;
}

.page-about .stage-rule::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: var(--rule);
}

.page-about .stage-rule::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: calc(50% - 7px);
  height: 14px;
  background: repeating-linear-gradient(to right, var(--rule) 0 1px, transparent 1px 26px);
}

/* ---------- 下一阶段 ---------- */
.page-about .stage-next {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 26px;
  padding-bottom: 3px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 14px;
  color: var(--green);
  text-decoration: none;
  border-bottom: 2px solid var(--gold);
  transition: color 0.2s ease, gap 0.2s ease;
}

.page-about .stage-next::after {
  content: "↓";
  font-family: var(--font-mono);
  font-size: 13px;
}

.page-about .stage-next:hover,
.page-about .stage-next:focus-visible {
  color: var(--hot);
  gap: 12px;
}

/* ---------- 区域地图 ---------- */
.page-about .region-map {
  margin: clamp(30px, 5vw, 52px) 0 0;
}

.page-about .region-map__img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: linear-gradient(120deg, var(--sand) 0%, var(--green-100) 55%, #ffffff 100%);
}

.page-about .region-legend {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .region-legend__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 16px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: #ffffff;
  font-size: 13.5px;
  color: var(--green-900);
  transition: border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.page-about .region-legend__item:hover {
  border-color: var(--gold);
  background: var(--sand);
  transform: translateY(-2px);
}

.page-about .region-legend__n {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  color: var(--ink);
}

.page-about .stage__afterword {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .stage__afterword a {
  color: var(--green);
  text-decoration: underline;
  text-decoration-color: var(--gold);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

/* ---------- 行情纪要走马灯 ---------- */
.page-about .journal-scroller {
  display: flex;
  gap: 16px;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 4px 4px 20px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-about .journal-card {
  flex: 0 0 clamp(196px, 60vw, 252px);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px 20px;
  border-radius: 8px;
  border-top: 4px solid var(--gold);
  background: #ffffff;
  box-shadow: 0 10px 24px rgba(10, 83, 52, 0.16);
}

.page-about .journal-card__issue {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 20px;
  line-height: 1;
  color: var(--green-900);
  letter-spacing: -0.01em;
}

.page-about .journal-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--ink);
}

.page-about .journal-card__meta {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--hot);
  background: var(--hot-50);
  border-radius: 999px;
  padding: 4px 10px;
  align-self: flex-start;
}

.page-about .journal-hint {
  margin: 6px 0 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.62);
}

/* ---------- 板块清单 ---------- */
.page-about .board-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: 6px;
  overflow: hidden;
}

.page-about .board-item {
  background: var(--canvas);
  padding: 18px 20px 20px;
  transition: background-color 0.2s ease;
}

.page-about .board-item:hover { background: var(--green-100); }

.page-about .board-item__name {
  display: block;
  margin-bottom: 7px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  color: var(--green-900);
}

.page-about .board-item__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 收尾行动 ---------- */
.page-about .about-cta {
  margin-top: clamp(34px, 5vw, 56px);
  padding: clamp(22px, 3.4vw, 34px);
  border-radius: 10px;
  border-left: 6px solid var(--gold);
  background: var(--sand);
}

.page-about .about-cta__text {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(16px, 1.9vw, 19px);
  line-height: 1.6;
  color: var(--green-900);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__facts { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-about .board-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-about .region-legend { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 900px) {
  .page-about .stage__grid {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 68px);
    align-items: start;
  }

  .page-about .stage__grid--figure {
    grid-template-columns: var(--about-rail) minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-about .stage__grid--figure-left {
    grid-template-columns: var(--about-rail) minmax(0, 0.85fr) minmax(0, 1.15fr);
  }

  .page-about .stage__aside {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    position: sticky;
    top: var(--about-nav-offset);
  }

  .page-about .stage__aside::after {
    content: "";
    width: 2px;
    height: clamp(40px, 8vw, 88px);
    background: linear-gradient(180deg, var(--gold) 0%, transparent 100%);
    margin-top: 6px;
  }

  .page-about .stage__body--dense p { max-width: 74ch; }
}

@media (min-width: 1080px) {
  .page-about .region-legend { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .page-about .board-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .region-legend__item,
  .page-about .stage-next,
  .page-about .board-item {
    transition: none;
  }
}
</PAGE_CSS>>>