.page-about {
  --about-line: 1px solid var(--stroke);
  --about-cut: 16px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(20px, 3.5vw, 38px) clamp(30px, 5vw, 70px);
  border-bottom: var(--about-line);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -20%;
  width: min(680px, 92vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 42% 42%, rgba(184, 255, 61, 0.16), rgba(184, 255, 61, 0) 68%);
  clip-path: polygon(30% 0, 100% 0, 100% 70%, 0 100%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 34%;
  max-width: 320px;
  height: 3px;
  background: linear-gradient(90deg, var(--lime), var(--orange));
  transform: skewX(-30deg);
  transform-origin: left bottom;
}

.page-about .breadcrumbs {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(18px, 3vw, 32px);
}

.page-about .hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .hero-copy h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(33px, 7.2vw, 76px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--paper);
}

.page-about .hero-lead {
  margin: 20px 0 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.8;
  color: rgba(241, 246, 232, 0.76);
}

.page-about .hero-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--stroke);
  border: var(--about-line);
  clip-path: polygon(0 0, calc(100% - var(--about-cut)) 0, 100% var(--about-cut), 100% 100%, var(--about-cut) 100%, 0 calc(100% - var(--about-cut)));
}

.page-about .fact {
  background: var(--ink-800);
  padding: 15px 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.page-about .fact-num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.2vw, 33px);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-about .fact-num em {
  font-style: normal;
  font-size: 0.52em;
  margin-left: 2px;
  color: var(--lime);
}

.page-about .fact-key {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

@media (min-width: 900px) {
  .page-about .hero-grid {
    grid-template-columns: minmax(0, 1.65fr) minmax(250px, 0.85fr);
    align-items: end;
  }
}

/* ---------- 品牌起点 ---------- */
.page-about .about-origin {
  padding-block: clamp(42px, 6vw, 82px);
}

.page-about .origin-grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-about .origin-copy h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.2vw, 46px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--paper);
}

.page-about .origin-copy p {
  margin: 18px 0 0;
  font-size: clamp(15px, 1.3vw, 16.5px);
  line-height: 1.85;
  color: rgba(241, 246, 232, 0.78);
}

.page-about .origin-points {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-about .origin-points li {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(241, 246, 232, 0.84);
}

.page-about .origin-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 12px;
  height: 2px;
  background: var(--lime);
  transform: skewX(-32deg);
}

.page-about .origin-media {
  margin: 0;
  border: var(--about-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), 0 100%);
  background: var(--ink-700);
}

.page-about .origin-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.88) brightness(0.86);
}

@media (min-width: 880px) {
  .page-about .origin-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }
}

/* ---------- 团队分工带 ---------- */
.page-about .about-team {
  background: var(--ink-800);
  border-block: var(--about-line);
  padding-block: clamp(40px, 6vw, 78px);
}

.page-about .team-head {
  display: grid;
  gap: 16px;
}

.page-about .team-head h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.2vw, 46px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--paper);
}

.page-about .team-note {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

@media (min-width: 900px) {
  .page-about .team-head {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
    gap: clamp(20px, 4vw, 56px);
  }
}

.page-about .about-team .filter-bar {
  margin: 24px 0 26px;
}

.page-about .team-grid {
  display: grid;
  gap: 18px;
}

.page-about .team-card {
  position: relative;
  background: var(--ink-700);
  border: var(--about-line);
  padding: 22px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 180ms var(--ease), border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-about .team-card:hover,
.page-about .team-card:focus-visible {
  transform: translateY(-5px);
  border-color: var(--lime);
  background: #164534;
}

.page-about .team-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ice);
}

.page-about .team-card h3 {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .team-role {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(241, 246, 232, 0.76);
}

.page-about .team-meta {
  margin: 2px 0 0;
  display: grid;
  gap: 8px;
}

.page-about .team-meta div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding-top: 8px;
  border-top: 1px dashed rgba(31, 74, 57, 0.95);
}

.page-about .team-meta dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  flex: none;
}

.page-about .team-meta dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  text-align: right;
  color: var(--paper);
}

.page-about .team-peek {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  color: var(--lime);
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity 200ms var(--ease), max-height 200ms var(--ease);
}

.page-about .team-card:hover .team-peek,
.page-about .team-card:focus .team-peek,
.page-about .team-card:focus-within .team-peek {
  opacity: 1;
  max-height: 72px;
}

@media (hover: none) {
  .page-about .team-peek {
    opacity: 1;
    max-height: none;
  }
}

@media (min-width: 760px) {
  .page-about .team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
  .page-about .team-card:nth-child(2) {
    margin-top: 26px;
  }
  .page-about .team-card:nth-child(3) {
    margin-top: -14px;
  }
}

/* ---------- 批次归档 ---------- */
.page-about .about-batch {
  padding-block: clamp(42px, 6vw, 82px);
}

.page-about .batch-grid {
  display: grid;
  gap: clamp(26px, 4vw, 50px);
  align-items: center;
}

.page-about .batch-media {
  margin: 0;
  border: var(--about-line);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 22px 100%, 0 calc(100% - 22px));
  background: var(--ink-700);
}

.page-about .batch-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.9) brightness(0.9);
}

.page-about .batch-copy h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.2vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--paper);
}

.page-about .batch-copy p {
  margin: 18px 0 0;
  font-size: clamp(15px, 1.3vw, 16.5px);
  line-height: 1.85;
  color: rgba(241, 246, 232, 0.78);
}

.page-about .batch-stats {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .batch-stats .stat {
  background: var(--ink-800);
  border: var(--about-line);
  border-left: 3px solid var(--orange);
  padding: 13px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .batch-stats .stat-value {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 29px);
  font-weight: 700;
  line-height: 1;
  color: var(--paper);
}

.page-about .batch-stats .stat-label {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

@media (min-width: 900px) {
  .page-about .batch-grid {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  }
  .page-about .batch-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 发展历程 ---------- */
.page-about .about-milestones {
  background: var(--ink-800);
  border-block: var(--about-line);
  padding-block: clamp(42px, 6vw, 84px);
}

.page-about .ms-head {
  display: grid;
  gap: 22px;
  margin-bottom: clamp(28px, 4vw, 52px);
}

.page-about .ms-head h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.2vw, 46px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--paper);
}

.page-about .ms-figure {
  margin: 0;
  border: var(--about-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), 0 100%);
  background: var(--ink-700);
}

.page-about .ms-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.62) brightness(0.66);
}

@media (min-width: 880px) {
  .page-about .ms-head {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: end;
  }
}

.page-about .milestone-body {
  display: grid;
  gap: 22px;
}

.page-about .year-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 6px;
}

.page-about .year-link {
  display: block;
  padding: 7px 13px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--paper);
  text-decoration: none;
  border: var(--about-line);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-about .year-link:hover,
.page-about .year-link:focus-visible {
  color: var(--ink-900);
  background: var(--lime);
  border-color: var(--lime);
}

.page-about .milestone-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(18px, 3vw, 30px);
}

.page-about .milestone {
  position: relative;
  padding-left: 26px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-about .milestone::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: calc(-1 * clamp(18px, 3vw, 30px));
  width: 1px;
  background: linear-gradient(180deg, var(--stroke), rgba(31, 74, 57, 0.12));
}

.page-about .milestone:last-child::before {
  display: none;
}

.page-about .milestone-node {
  position: absolute;
  left: -5px;
  top: 9px;
  width: 11px;
  height: 11px;
  background: var(--lime);
  transform: rotate(45deg);
  box-shadow: 0 0 0 4px rgba(184, 255, 61, 0.12);
}

.page-about .milestone-card {
  background: var(--ink-700);
  border: var(--about-line);
  border-left: 3px solid rgba(255, 138, 61, 0.6);
  padding: 18px 20px 20px;
}

.page-about .milestone-year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-about .milestone-card h3 {
  margin: 8px 0 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper);
}

.page-about .milestone-card p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(241, 246, 232, 0.75);
}

@media (min-width: 820px) {
  .page-about .milestone-body {
    grid-template-columns: minmax(92px, 116px) minmax(0, 1fr);
    gap: clamp(24px, 4vw, 60px);
    align-items: start;
  }
  .page-about .year-index {
    flex-direction: column;
    gap: 0;
    position: sticky;
    top: calc(var(--header-h) + 18px);
    border-left: 1px solid var(--stroke);
  }
  .page-about .year-link {
    border: 0;
    border-left: 2px solid transparent;
    margin-left: -1px;
    padding: 9px 0 9px 14px;
    color: var(--muted);
    font-size: 15px;
  }
  .page-about .year-link:hover,
  .page-about .year-link:focus-visible {
    color: var(--lime);
    background: transparent;
    border-left-color: var(--lime);
  }
}

/* ---------- 合作与覆盖 ---------- */
.page-about .about-coverage {
  padding-block: clamp(42px, 6vw, 82px);
}

.page-about .about-coverage h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.2vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--paper);
  max-width: 22ch;
}

.page-about .cov-lead {
  margin: 16px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .cov-band {
  margin-top: clamp(24px, 3.5vw, 38px);
  display: grid;
  gap: 1px;
  background: var(--stroke);
  border: var(--about-line);
}

.page-about .cov-item {
  background: var(--ink-800);
  padding: 22px 20px 24px;
}

.page-about .cov-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 4.4vw, 46px);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-about .cov-key {
  margin: 10px 0 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--lime);
}

.page-about .cov-item p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(241, 246, 232, 0.75);
}

.page-about .cov-foot {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  padding-left: 14px;
  border-left: 2px solid var(--ice);
}

@media (min-width: 760px) {
  .page-about .cov-band {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 收尾 ---------- */
.page-about .slash-rule {
  margin-block: clamp(10px, 2vw, 22px);
}

.page-about .about-cta {
  padding-block: clamp(34px, 5vw, 72px) clamp(48px, 7vw, 92px);
}

.page-about .cta-panel {
  position: relative;
  overflow: hidden;
  background: linear-gradient(122deg, var(--ink-700), var(--ink-800) 62%);
  border: var(--about-line);
  padding: clamp(26px, 4vw, 50px);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
}

.page-about .cta-panel::after {
  content: "";
  position: absolute;
  right: -46px;
  top: -46px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(184, 255, 61, 0.2), rgba(184, 255, 61, 0) 70%);
  pointer-events: none;
}

.page-about .cta-panel h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(25px, 4vw, 42px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--paper);
  max-width: 20ch;
}

.page-about .cta-panel p {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(241, 246, 232, 0.78);
}

.page-about .cta-actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (max-width: 380px) {
  .page-about .cta-actions .btn,
  .page-about .cta-actions .btn-ghost {
    width: 100%;
    text-align: center;
  }
}
<<<END>>>