.page-about {
  --about-rail-w: 128px;
  --about-gap: 48px;
  --about-edge: var(--edge);
  --about-hairline: rgba(201, 216, 232, 0.26);
  display: block;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .about-masthead {
  position: relative;
  padding: clamp(72px, 9vw, 118px) 0 clamp(40px, 5vw, 64px);
  border-bottom: 2px solid var(--about-edge);
  background:
    radial-gradient(120% 96% at 86% 6%, rgba(242, 104, 31, 0.34), transparent 58%),
    radial-gradient(96% 78% at 4% 96%, rgba(43, 232, 176, 0.16), transparent 60%),
    var(--ink);
  isolation: isolate;
}

.page-about .about-masthead::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(201, 216, 232, 0.07) 0 1px, transparent 1px 84px),
    repeating-linear-gradient(0deg, rgba(201, 216, 232, 0.05) 0 1px, transparent 1px 84px);
}

.page-about .breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel);
  margin-bottom: 28px;
}

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

.page-about .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--orange-soft);
  margin: 0 0 18px;
}

.page-about .about-h1 {
  font-size: clamp(34px, 7.2vw, 74px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.06;
  margin: 0 0 24px;
  max-width: 20ch;
  color: var(--paper);
}

.page-about .about-lede {
  font-family: var(--font-serif);
  font-size: clamp(17px, 2.3vw, 22px);
  line-height: 1.78;
  color: var(--steel-light);
  max-width: 56ch;
  margin: 0 0 clamp(36px, 5vw, 56px);
}

.page-about .about-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  border: 2px solid var(--about-edge);
  box-shadow: var(--shadow-hard-sm);
  background: var(--about-edge);
}

.page-about .about-stat {
  background: var(--panel);
  padding: 16px 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-stat-num {
  font-size: clamp(26px, 5vw, 40px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--orange);
}

.page-about .about-stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--steel);
}

/* ---------- 布局外壳 ---------- */
.page-about .about-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  padding-bottom: clamp(64px, 8vw, 110px);
}

.page-about .about-flow {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* ---------- 侧边章节锚点 ---------- */
.page-about .about-rail {
  order: -1;
  padding: 20px 0 8px;
  border-bottom: 2px solid var(--about-edge);
  background: var(--ink);
}

.page-about .anchor-rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 8px;
}
.page-about .anchor-rail::-webkit-scrollbar { display: none; }

.page-about .anchor-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 2px solid var(--about-edge);
  border-radius: var(--pill);
  background: var(--panel);
  color: var(--steel-light);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.page-about .about-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--steel);
  transition: background 0.2s ease;
}

.page-about .anchor-link:hover {
  background: var(--panel-2);
  color: var(--paper);
}

.page-about .anchor-link.is-current {
  background: var(--mint);
  color: var(--ink-deep);
  box-shadow: var(--shadow-hard-sm);
}
.page-about .anchor-link.is-current .about-dot { background: var(--ink-deep); }

/* ---------- 章节基础 ---------- */
.page-about .about-section {
  position: relative;
  padding: clamp(40px, 5.5vw, 68px) 0;
  border-top: 2px solid var(--about-edge);
}

.page-about .about-section:first-child { border-top: 0; }

.page-about .about-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  margin-bottom: 26px;
  border-bottom: 2px solid var(--about-hairline);
}

.page-about .about-index {
  font-size: clamp(26px, 4.4vw, 44px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--orange);
  flex: 0 0 auto;
}

.page-about .about-h2 {
  font-size: clamp(23px, 3.6vw, 38px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.16;
  margin: 0;
  color: var(--paper);
}

.page-about .about-copy {
  max-width: 68ch;
}

.page-about .about-copy p {
  font-size: clamp(15.5px, 1.55vw, 17.5px);
  line-height: 1.85;
  color: var(--steel-light);
  margin: 0 0 18px;
}
.page-about .about-copy p:last-child { margin-bottom: 0; }

.page-about .about-copy-lead {
  font-family: var(--font-serif);
  font-size: clamp(17px, 2.1vw, 21px);
  line-height: 1.76;
  color: var(--paper);
  max-width: 54ch;
  margin: 0 0 34px;
}

/* 暖纸色长文章节 */
.page-about .about-section--paper {
  background: var(--paper);
  color: var(--ink);
  border: 2px solid var(--about-edge);
  box-shadow: var(--shadow-hard-sm);
  padding: clamp(32px, 4.5vw, 54px) clamp(22px, 4vw, 48px);
  margin: clamp(28px, 4vw, 44px) 0;
}

.page-about .about-section--paper .about-head {
  border-bottom-color: rgba(11, 27, 51, 0.24);
}
.page-about .about-section--paper .about-index { color: var(--orange); }
.page-about .about-section--paper .about-h2 { color: var(--ink); }
.page-about .about-section--paper .about-copy p { color: #23384f; }
.page-about .about-section--paper .about-copy-lead { color: var(--ink); }

/* ---------- 团队条形 ---------- */
.page-about .about-bars {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.page-about .about-bar {
  border: 2px solid var(--about-edge);
  background: var(--panel);
  padding: 18px 18px 20px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.page-about .about-bar:hover,
.page-about .about-bar:focus-within {
  background: var(--panel-2);
  box-shadow: var(--shadow-hard-sm);
  transform: translate(-2px, -2px);
}

.page-about .about-bar-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.page-about .about-bar-name {
  font-size: clamp(15px, 1.8vw, 18px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-bar-num {
  font-size: clamp(30px, 5vw, 46px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--mint);
}

.page-about .about-bar-track {
  height: 12px;
  border: 2px solid var(--about-edge);
  background: var(--ink-deep);
  overflow: hidden;
}

.page-about .about-bar-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--orange), var(--orange-soft));
  transition: width 0.6s ease;
}

.page-about .about-bar:nth-child(1) .about-bar-fill { width: 100%; }
.page-about .about-bar:nth-child(2) .about-bar-fill { width: 35%; }

.page-about .about-bar-note {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--steel-light);
  max-width: 62ch;
}

/* ---------- 一天的数据节奏 ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: about-step;
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--about-hairline);
  border: 2px solid var(--about-edge);
}

.page-about .about-step {
  position: relative;
  counter-increment: about-step;
  background: var(--panel);
  padding: 18px 18px 18px 62px;
}

.page-about .about-step::before {
  content: counter(about-step, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--mint);
}

.page-about .about-step-when {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange-soft);
  margin-bottom: 8px;
}

.page-about .about-step p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--steel-light);
}

.page-about .about-figure {
  margin: 0;
  position: relative;
  border: 2px solid var(--about-edge);
  box-shadow: var(--shadow-hard-sm);
  overflow: hidden;
  background: var(--ink-deep);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-figure .media-tag {
  position: absolute;
  left: 12px;
  bottom: 12px;
  background: var(--ink-deep);
  color: var(--mint);
  border: 2px solid var(--mint);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 6px 10px;
}

/* ---------- 高原章节 ---------- */
.page-about .about-section--plateau {
  position: relative;
  border: 2px solid var(--about-edge);
  box-shadow: var(--shadow-hard-sm);
  overflow: hidden;
  margin: clamp(28px, 4vw, 44px) 0;
  padding: clamp(38px, 6vw, 76px) clamp(22px, 4.4vw, 56px);
  min-height: 420px;
  display: flex;
  align-items: flex-end;
}

.page-about .about-plateau-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.page-about .about-section--plateau::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(100deg, rgba(7, 11, 18, 0.94) 0%, rgba(7, 11, 18, 0.8) 42%, rgba(7, 11, 18, 0.18) 100%);
}

.page-about .about-plateau-body {
  position: relative;
  z-index: 2;
  max-width: 60ch;
}

.page-about .about-section--plateau .about-head {
  border-bottom-color: rgba(43, 232, 176, 0.4);
}

.page-about .about-section--plateau .about-copy p {
  color: var(--steel-light);
}

/* ---------- 三件事 ---------- */
.page-about .about-focus-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  background: var(--about-edge);
  border: 2px solid var(--about-edge);
}

.page-about .about-focus-card {
  background: var(--paper-white);
  padding: 24px 22px 26px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-about .about-focus-title {
  font-size: clamp(18px, 2.2vw, 21px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0;
  padding-bottom: 10px;
  border-bottom: 2px solid rgba(11, 27, 51, 0.18);
}

.page-about .about-focus-card p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: #23384f;
  flex: 1 1 auto;
}

.page-about .about-focus-card .tag {
  align-self: flex-start;
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 0 0 34px;
  padding: 0;
  max-width: 74ch;
}

.page-about .tl-item {
  position: relative;
  padding: 0 0 34px 42px;
  transition: transform 0.2s ease;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink);
  border: 3px solid var(--mint);
  box-sizing: border-box;
  z-index: 2;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.page-about .tl-item::after {
  content: "";
  position: absolute;
  left: 9px;
  top: 26px;
  bottom: 2px;
  width: 2px;
  background: linear-gradient(180deg, rgba(43, 232, 176, 0.55), rgba(43, 232, 176, 0.08));
}

.page-about .tl-item:last-child { padding-bottom: 0; }
.page-about .tl-item:last-child::after { display: none; }

.page-about .tl-item:hover { transform: translateX(4px); }
.page-about .tl-item:hover::before {
  background: var(--orange);
  border-color: var(--orange-soft);
}

.page-about .tl-year {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--orange-soft);
  margin-bottom: 8px;
}

.page-about .tl-title {
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0 0 8px;
}

.page-about .tl-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel-light);
  max-width: 58ch;
}

.page-about .about-timeline-figure {
  margin: 0;
  border: 2px solid var(--about-edge);
  overflow: hidden;
  background: var(--ink-deep);
  position: relative;
}

.page-about .about-timeline-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-about .about-timeline-figure .media-tag {
  position: absolute;
  right: 12px;
  top: 12px;
  background: rgba(7, 11, 18, 0.9);
  color: var(--mint);
  border: 2px solid var(--mint);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 6px 10px;
}

/* ---------- 收束 ---------- */
.page-about .about-cta {
  border-top: 2px solid var(--about-edge);
  padding-top: clamp(36px, 5vw, 60px);
}

.page-about .about-cta-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  background: var(--about-edge);
  border: 2px solid var(--about-edge);
  margin-top: 6px;
}

.page-about .about-cta-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--panel);
  padding: 22px 20px 24px;
  text-decoration: none;
  color: var(--paper);
  transition: background 0.2s ease;
}

.page-about .about-cta-card:hover { background: var(--panel-2); }
.page-about .about-cta-card:focus-visible {
  outline: 3px solid var(--mint);
  outline-offset: -3px;
}

.page-about .about-cta-kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--orange-soft);
}

.page-about .about-cta-title {
  font-size: clamp(16px, 1.9vw, 19px);
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.page-about .about-cta-arrow {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--mint);
  margin-top: auto;
  padding-top: 10px;
}

.page-about .about-back {
  margin: 22px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.page-about .about-back a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 2px solid rgba(43, 232, 176, 0.4);
  padding-bottom: 2px;
}
.page-about .about-back a:hover { border-bottom-color: var(--mint); }

/* ---------- 入场动效 ---------- */
@keyframes about-rise {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-about [data-reveal].is-visible {
  animation: about-rise 0.42s ease both;
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal].is-visible { animation: none; }
  .page-about .about-bar,
  .page-about .tl-item,
  .page-about .about-bar-fill,
  .page-about .anchor-link {
    transition: none;
  }
  .page-about .tl-item:hover { transform: none; }
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-about .about-stats {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .about-section--paper {
    box-shadow: var(--shadow-hard);
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 28px;
    align-items: start;
  }

  .page-about .about-figure {
    box-shadow: var(--shadow-hard-sm);
  }

  .page-about .about-focus-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-cta-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1040px) {
  .page-about .about-shell {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    column-gap: var(--about-gap);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 108px;
    order: 0;
    align-self: start;
    border-bottom: 0;
    padding: 46px 0 0;
    background: transparent;
  }

  .page-about .anchor-rail {
    flex-direction: column;
    overflow: visible;
    gap: 10px;
    padding-bottom: 0;
  }

  .page-about .anchor-link {
    width: 100%;
    justify-content: flex-start;
    box-sizing: border-box;
  }

  .page-about .about-flow {
    border-left: 2px solid var(--about-hairline);
  }

  .page-about .about-section {
    padding-left: clamp(24px, 3vw, 46px);
    padding-right: clamp(24px, 3vw, 46px);
  }

  .page-about .about-section--paper,
  .page-about .about-section--plateau {
    margin-left: clamp(24px, 3vw, 46px);
    margin-right: clamp(24px, 3vw, 46px);
    margin-top: clamp(32px, 3.6vw, 52px);
    margin-bottom: clamp(32px, 3.6vw, 52px);
  }

  .page-about .about-cta-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-section--plateau {
    min-height: 480px;
    align-items: center;
  }
}
</｜｜DSML｜｜ parameter>
</｜｜DSML｜｜ invoke>
</｜｜DSML｜｜ calls>