.page-about {
  --tick-w: 54px;
  --tick-gap: 14px;
  --track-line: 1px;
  padding-bottom: 0;
}

@media (min-width: 820px) {
  .page-about {
    --tick-w: 108px;
    --tick-gap: 34px;
  }
}

/* ---------- 首屏声明 ---------- */
.page-about .about-intro {
  padding: 26px 0 44px;
  position: relative;
}

.page-about .about-intro::after {
  content: "";
  display: block;
  height: 2px;
  margin-top: 36px;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 42%, var(--magenta) 72%, transparent);
}

.page-about .about-intro h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 8vw, 58px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 14px 0 18px;
  max-width: 15em;
}

.page-about .about-lede {
  font-size: 16px;
  line-height: 1.72;
  color: var(--ink-dim);
  max-width: 46ch;
  margin: 0;
}

.page-about .about-facts {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  background: var(--line);
  border: 2px solid var(--line);
}

@media (min-width: 780px) {
  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-facts li {
  background: var(--panel);
  padding: 16px 14px 15px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  transition: background-color 0.12s linear;
}

.page-about .about-facts li:hover {
  background: var(--float);
}

.page-about .fact-num {
  font-size: 26px;
  line-height: 1;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-about .fact-label {
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--ink-dim);
}

/* ---------- 纵向刻度轨道 ---------- */
.page-about .about-track {
  position: relative;
  padding: 8px 0 56px;
}

.page-about .about-track::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: calc(var(--tick-w) / 2 - 0.5px);
  width: var(--track-line);
  background: linear-gradient(
    180deg,
    rgba(0, 229, 255, 0.65) 0%,
    rgba(140, 123, 255, 0.5) 40%,
    rgba(255, 47, 180, 0.45) 72%,
    rgba(255, 61, 110, 0) 100%
  );
}

.page-about .track-row {
  display: grid;
  grid-template-columns: var(--tick-w) minmax(0, 1fr);
  gap: var(--tick-gap);
  align-items: start;
  padding: 30px 0;
}

.page-about .track-row + .track-row {
  border-top: 1px dashed rgba(42, 35, 80, 0.9);
}

.page-about .track-tick {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.page-about .track-tick .mono {
  font-size: 11px;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--cyan);
  background: var(--bg);
  border: 1px solid var(--line);
  padding: 5px 4px;
  white-space: nowrap;
  transition: color 0.12s linear, border-color 0.12s linear;
}

@media (min-width: 820px) {
  .page-about .track-tick .mono {
    font-size: 13px;
    padding: 6px 7px;
  }
}

.page-about .track-row:hover .track-tick .mono {
  color: var(--lime);
  border-color: var(--cyan);
}

.page-about .track-body {
  min-width: 0;
}

.page-about .track-row--narrow .track-body {
  max-width: 100%;
}

@media (min-width: 900px) {
  .page-about .track-row--narrow .track-body {
    max-width: 60%;
  }
  .page-about .track-row--mid .track-body {
    max-width: 78%;
  }
}

.page-about .track-body h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 4.6vw, 34px);
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 0 0 14px;
}

.page-about .track-body p {
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink-dim);
  margin: 0 0 12px;
}

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

.page-about .about-sub {
  color: var(--ink) !important;
  font-size: 15.5px !important;
}

/* ---------- 引文块 ---------- */
.page-about .about-quote {
  margin: 22px 0 0;
  padding: 18px 20px;
  border: 2px solid var(--line);
  border-left: 4px solid var(--magenta);
  background: var(--float);
  box-shadow: var(--shadow-hard);
}

.page-about .about-quote p {
  font-family: var(--font-display);
  font-size: clamp(18px, 3.6vw, 24px);
  line-height: 1.4;
  color: var(--ink) !important;
  margin: 0 0 10px;
}

.page-about .about-quote cite {
  display: block;
  font-style: normal;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
}

/* ---------- 三条产品线 ---------- */
.page-about .pillar-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 22px;
}

@media (min-width: 900px) {
  .page-about .pillar-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-pillar {
  position: relative;
  padding: 22px 20px 20px;
  overflow: hidden;
  background: var(--panel);
}

.page-about .about-pillar::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

.page-about .pillar--a::before {
  background: var(--cyan);
}

.page-about .pillar--b::before {
  background: var(--magenta);
}

.page-about .pillar--c::before {
  background: var(--violet);
}

.page-about .pillar-num {
  font-size: 32px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin: 0;
}

.page-about .pillar--a .pillar-num {
  color: var(--cyan);
}

.page-about .pillar--b .pillar-num {
  color: var(--magenta);
}

.page-about .pillar--c .pillar-num {
  color: var(--violet);
}

.page-about .pillar-unit {
  font-size: 12px !important;
  letter-spacing: 0.04em;
  color: var(--ink-dim) !important;
  margin: 6px 0 16px !important;
}

.page-about .about-pillar h3 {
  font-family: var(--font-panel);
  font-size: 15.5px;
  line-height: 1.4;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--ink);
  margin: 0 0 10px;
}

.page-about .about-pillar p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-dim);
  margin: 0;
}

.page-about .about-inline-link {
  margin-top: 20px !important;
}

.page-about .about-inline-link .link-line {
  font-size: 14px;
  color: var(--cyan);
}

/* ---------- 版本时间线 ---------- */
.page-about .version-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  margin-top: 20px;
}

@media (min-width: 920px) {
  .page-about .version-layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
    gap: 32px;
  }
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .tl-item {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 12px;
  padding: 13px 14px 13px 0;
  border-left: 2px solid var(--line);
  padding-left: 14px;
  transition: border-color 0.12s linear, background-color 0.12s linear;
}

.page-about .tl-item:hover {
  border-left-color: var(--cyan);
  background: var(--float);
}

.page-about .tl-year {
  font-size: 13.5px;
  line-height: 1.3;
  letter-spacing: 0.03em;
  color: var(--ink-dim);
  padding-top: 2px;
  transition: color 0.12s linear;
}

.page-about .tl-item:hover .tl-year {
  color: var(--lime);
}

.page-about .tl-copy h3 {
  font-family: var(--font-panel);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--ink);
  margin: 0 0 6px;
}

.page-about .tl-copy p {
  font-size: 14px;
  line-height: 1.68;
  color: var(--ink-dim);
  margin: 0;
}

/* ---------- 图片框架 ---------- */
.page-about .about-figure {
  margin: 0;
  border: 2px solid var(--line);
  background: var(--float);
  position: relative;
  overflow: hidden;
}

.page-about .about-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(0, 229, 255, 0.12), rgba(255, 47, 180, 0.1) 62%, transparent);
  pointer-events: none;
}

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

.page-about .about-figure figcaption {
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--ink-dim);
  padding: 10px 12px;
  border-top: 1px solid var(--line);
  background: var(--panel);
  position: relative;
  z-index: 1;
}

.page-about .about-figure--flow {
  margin-bottom: 22px;
}

/* ---------- 团队 ---------- */
.page-about .team-bar {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--line);
  border: 2px solid var(--line);
}

@media (min-width: 700px) {
  .page-about .team-bar {
    flex-direction: row;
    align-items: stretch;
    min-height: 108px;
  }
}

.page-about .team-seg {
  padding: 14px 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 10px;
  min-width: 0;
  transition: filter 0.12s linear;
}

@media (min-width: 700px) {
  .page-about .team-seg {
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    gap: 4px;
  }
}

.page-about .team-seg--a {
  background: linear-gradient(120deg, rgba(0, 229, 255, 0.28), rgba(0, 229, 255, 0.1));
  flex: 14;
}

.page-about .team-seg--b {
  background: linear-gradient(120deg, rgba(140, 123, 255, 0.28), rgba(140, 123, 255, 0.1));
  flex: 12;
}

.page-about .team-seg--c {
  background: linear-gradient(120deg, rgba(255, 47, 180, 0.26), rgba(255, 47, 180, 0.09));
  flex: 6;
}

.page-about .team-seg:hover {
  filter: brightness(1.28);
}

.page-about .seg-num {
  font-size: 24px;
  line-height: 1;
  font-weight: 700;
  color: var(--ink);
}

.page-about .seg-label {
  font-family: var(--font-panel);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-about .seg-note {
  font-size: 11.5px;
  line-height: 1.4;
  color: var(--ink-dim);
  flex-basis: 100%;
}

@media (min-width: 700px) {
  .page-about .seg-note {
    flex-basis: auto;
  }
}

.page-about .team-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  margin-top: 26px;
}

@media (min-width: 920px) {
  .page-about .team-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.78fr);
    gap: 32px;
    align-items: start;
  }
}

.page-about .team-stats {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  background: var(--line);
  border: 2px solid var(--line);
}

.page-about .team-stats li {
  background: var(--panel);
  padding: 14px 14px 13px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-about .stat-num {
  font-size: 24px;
  line-height: 1;
  font-weight: 700;
  color: var(--lime);
  letter-spacing: 0.02em;
}

.page-about .stat-txt {
  font-size: 12px;
  line-height: 1.45;
  color: var(--ink-dim);
}

/* ---------- 入库流程 ---------- */
.page-about .flow-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

@media (min-width: 640px) {
  .page-about .flow-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-about .flow-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .flow-step {
  position: relative;
  padding: 18px 16px 16px;
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  min-width: 0;
  transition: border-color 0.12s linear, transform 0.12s linear, box-shadow 0.12s linear;
}

.page-about .flow-step:hover {
  border-color: var(--cyan);
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-cyan);
}

.page-about .flow-num {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lime);
  border: 1px solid var(--line);
  padding: 3px 6px;
  margin-bottom: 12px;
}

.page-about .flow-step h3 {
  font-family: var(--font-panel);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--ink);
  margin: 0 0 8px;
}

.page-about .flow-step p {
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--ink-dim);
  margin: 0;
}

/* ---------- 下一步 ---------- */
.page-about .next-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

@media (min-width: 780px) {
  .page-about .next-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .next-list li {
  border-top: 2px solid var(--magenta);
  padding: 14px 0 0;
  min-width: 0;
}

.page-about .next-list h3 {
  font-family: var(--font-panel);
  font-size: 14.5px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--ink);
  margin: 0 0 8px;
}

.page-about .next-list p {
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--ink-dim);
  margin: 0;
}

/* ---------- 结尾斜切带 ---------- */
.page-about .about-cta {
  background: linear-gradient(140deg, #171232 0%, #0F0B1E 55%, #1a0f2e 100%);
  clip-path: polygon(0 5%, 100% 0, 100% 100%, 0 100%);
  padding: 76px 0 60px;
  margin-top: 20px;
  position: relative;
}

.page-about .about-cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 48%, var(--magenta));
  opacity: 0.85;
}

.page-about .about-cta-inner h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 5.4vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0 0 14px;
  max-width: 16em;
}

.page-about .about-cta-inner p {
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink-dim);
  margin: 0 0 26px;
  max-width: 48ch;
}

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

@media (min-width: 640px) {
  .page-about .about-cta {
    padding: 96px 0 72px;
  }
}
<<<END>>>