.page-about {
  --about-rail-w: 108px;
  background: var(--ink);
  color: var(--body);
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about a:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  border-radius: 4px;
}

/* 顶部路径 */
.page-about .about-topbar {
  padding: 16px 0 0;
}

.page-about .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-about .breadcrumb-link {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-about .breadcrumb-link:hover,
.page-about .breadcrumb-link:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.page-about .breadcrumb-sep {
  color: var(--line);
}

.page-about .breadcrumb-current {
  color: var(--paper);
}

/* 首屏 */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 5vw, 56px) 0 clamp(38px, 6vw, 76px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -25% 35% 35% -15%;
  background: radial-gradient(circle at 32% 42%, rgba(200, 255, 63, 0.11), transparent 62%);
  pointer-events: none;
}

.page-about .about-hero-grid {
  position: relative;
  display: grid;
  gap: 34px;
}

.page-about .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 6.4vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-hero-lede {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.75;
  color: var(--body);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero-visual {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(200, 255, 63, 0.05);
}

.page-about .about-dial {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.page-about .about-hero-visual-note {
  margin: 12px 2px 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

/* 区块通用 */
.page-about .about-sec {
  padding: clamp(44px, 7vw, 84px) 0;
  border-top: 1px solid var(--line);
}

.page-about .about-head {
  display: grid;
  gap: 12px;
  max-width: 54em;
}

.page-about .about-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4.2vw, 42px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-head p:not(.eyebrow) {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--body);
}

/* 01 定位 + 数字锚点 */
.page-about .about-intro {
  display: grid;
  gap: 30px;
}

.page-about .about-intro-copy {
  display: grid;
  gap: 14px;
}

.page-about .about-intro-copy h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4.2vw, 42px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-intro-copy p {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--body);
}

.page-about .about-anchors {
  display: grid;
  align-content: start;
}

.page-about .about-anchor {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-anchor:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .about-anchor-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(30px, 4.4vw, 44px);
  line-height: 1;
  color: var(--lime);
}

.page-about .about-anchor-label {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

/* 02 时间线 */
.page-about .about-timeline-fig {
  margin: 32px 0 0;
}

.page-about .about-timeline-fig img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  object-fit: cover;
}

.page-about .about-timeline-fig figcaption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-about .about-track {
  display: grid;
  gap: 26px;
  margin-top: 36px;
}

.page-about .about-rail-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-rail-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease), background 0.16s var(--ease);
}

.page-about .about-rail-link:hover,
.page-about .about-rail-link:focus-visible {
  color: var(--lime);
  border-color: rgba(200, 255, 63, 0.5);
  background: var(--glass);
}

.page-about .about-rail-year {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  color: var(--paper);
}

.page-about .about-rail-dot {
  display: none;
}

.page-about .about-phase {
  padding: 20px 0 22px 18px;
  border-left: 3px solid var(--line);
  border-top: 1px solid var(--line);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease), background 0.18s var(--ease);
}

.page-about .about-phase:first-child {
  border-top: none;
  padding-top: 0;
}

.page-about .about-phase:target {
  border-left-color: var(--lime);
  background: var(--glass);
}

.page-about .about-phase-range {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-about .about-phase h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.3;
  color: var(--paper);
}

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

.page-about .about-phase-list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-about .about-phase-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--body);
}

.page-about .about-phase-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 8px;
  height: 2px;
  background: var(--lime-dim);
}

/* 03 团队 */
.page-about .about-crew {
  display: grid;
  gap: 14px;
  margin-top: 32px;
}

.page-about .about-crew-item {
  padding: 24px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--pitch);
  transition: transform 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .about-crew-item:hover,
.page-about .about-crew-item:focus-within {
  transform: translateY(-2px);
  border-color: rgba(200, 255, 63, 0.4);
}

.page-about .about-crew-item--data {
  border-top: 3px solid var(--lime);
}

.page-about .about-crew-item--cs {
  background: var(--char);
  border-left: 3px solid var(--orange);
}

.page-about .about-kicker {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-about .about-crew-item h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1.28;
  color: var(--paper);
}

.page-about .about-crew-item > p:not(.about-kicker) {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--body);
}

.page-about .about-crew-reveal {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition: grid-template-rows 0.2s var(--ease), opacity 0.2s var(--ease);
}

.page-about .about-crew-reveal > div {
  overflow: hidden;
}

.page-about .about-crew-item:hover .about-crew-reveal,
.page-about .about-crew-item:focus-within .about-crew-reveal {
  grid-template-rows: 1fr;
  opacity: 1;
}

.page-about .about-crew-list {
  margin: 16px 0 0;
  padding: 14px 0 0;
  border-top: 1px dashed var(--line);
  list-style: none;
  display: grid;
  gap: 7px;
}

.page-about .about-crew-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--mist);
}

.page-about .about-crew-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 7px;
  height: 2px;
  background: var(--lime);
}

/* 04 改版流程 */
.page-about .about-process-top {
  display: grid;
  gap: 26px;
}

.page-about .about-process-fig {
  margin: 0;
}

.page-about .about-process-fig img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  object-fit: cover;
}

.page-about .about-steps {
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-about .about-step {
  position: relative;
  padding: 24px 18px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--char);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-about .about-step:hover {
  transform: translateY(-2px);
  border-color: rgba(200, 255, 63, 0.35);
}

.page-about .about-step::before {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  top: 0;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: linear-gradient(90deg, var(--lime), var(--lime-dim));
}

.page-about .about-step:last-child::before {
  background: linear-gradient(90deg, var(--lime-dim), var(--orange));
}

.page-about .about-step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--lime);
}

.page-about .about-step h3 {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .about-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--body);
}

/* 05 规模数字带 */
.page-about .about-scale {
  position: relative;
  margin-top: 32px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--pitch);
}

.page-about .about-scale-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.26;
  pointer-events: none;
}

.page-about .about-scale-row {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(30, 74, 58, 0.6);
}

.page-about .about-scale-item {
  display: grid;
  gap: 8px;
  padding: 22px 18px;
  background: rgba(6, 35, 28, 0.84);
}

.page-about .about-scale-item:last-child {
  grid-column: span 2;
}

.page-about .about-scale-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1;
  color: var(--lime);
}

.page-about .about-scale-label {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-about .about-scale-note {
  margin: 20px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--body);
}

.page-about .about-inline-link {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 255, 63, 0.5);
  transition: border-color 0.16s var(--ease), color 0.16s var(--ease);
}

.page-about .about-inline-link:hover,
.page-about .about-inline-link:focus-visible {
  color: var(--lime-hi);
  border-bottom-color: var(--lime-hi);
}

/* 06 做事方式 */
.page-about .about-rules {
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
}

.page-about .about-rules li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-rules li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .about-rules-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--lime);
  padding-top: 4px;
}

.page-about .about-rules h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.4vw, 23px);
  line-height: 1.32;
  color: var(--paper);
}

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

/* 结尾行动带 */
.page-about .about-cta {
  padding: clamp(32px, 5vw, 56px) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(118deg, rgba(200, 255, 63, 0.13), transparent 68%),
    var(--char);
}

.page-about .about-cta-inner {
  display: grid;
  gap: 20px;
}

.page-about .about-cta-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 响应式 */
@media (min-width: 760px) {
  .page-about .about-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-scale-row {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .about-scale-item:last-child {
    grid-column: auto;
  }

  .page-about .about-rules li {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 28px;
    padding: 28px 0;
  }
}

@media (min-width: 880px) {
  .page-about .about-hero-grid {
    grid-template-columns: 1.12fr 0.88fr;
    gap: 52px;
    align-items: center;
  }

  .page-about .about-intro {
    grid-template-columns: 1.32fr 0.88fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .about-process-top {
    grid-template-columns: 1fr 0.76fr;
    gap: 44px;
    align-items: center;
  }

  .page-about .about-cta-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-about .about-track {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: 48px;
    margin-top: 44px;
  }

  .page-about .about-track-rail {
    position: sticky;
    top: calc(var(--header-h, 104px) + 28px);
    align-self: start;
  }

  .page-about .about-rail-list {
    flex-direction: column;
    gap: 0;
  }

  .page-about .about-rail-link {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 16px 0 16px 16px;
    border: none;
    border-left: 2px solid var(--line);
    border-radius: 0;
    background: none;
  }

  .page-about .about-rail-link:hover,
  .page-about .about-rail-link:focus-visible {
    border-left-color: var(--lime);
    background: none;
  }

  .page-about .about-rail-year {
    font-size: 20px;
  }

  .page-about .about-rail-dot {
    display: block;
    width: 6px;
    height: 6px;
    background: var(--line);
    transition: background 0.16s var(--ease), box-shadow 0.16s var(--ease);
  }

  .page-about .about-rail-link:hover .about-rail-dot,
  .page-about .about-rail-link:focus-visible .about-rail-dot {
    background: var(--lime);
    box-shadow: 0 0 0 4px var(--glass);
  }

  .page-about .about-track:has(.about-rail-link[href="#phase-1"]:hover) #phase-1,
  .page-about .about-track:has(.about-rail-link[href="#phase-2"]:hover) #phase-2,
  .page-about .about-track:has(.about-rail-link[href="#phase-3"]:hover) #phase-3 {
    border-left-color: var(--lime);
    transform: translateX(6px);
  }
}

@media (min-width: 960px) {
  .page-about .about-crew {
    grid-template-columns: 1.5fr 1.06fr 0.84fr;
    gap: 16px;
    align-items: start;
  }
}

@media (min-width: 1060px) {
  .page-about .about-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-step:not(:last-child)::after {
    content: "\2192";
    position: absolute;
    top: 50%;
    right: -15px;
    transform: translateY(-50%);
    font-family: var(--font-mono);
    font-size: 15px;
    color: var(--orange);
  }
}
<<<END>>>