.page-about {
  --about-rail: 208px;
  --about-gap: clamp(28px, 5vw, 76px);
  --about-track: rgba(198, 255, 62, .28);
  display: block;
  background: var(--ink);
  color: var(--paper);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: clamp(22px, 4vw, 40px) 0 clamp(38px, 6vw, 76px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  isolation: isolate;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -22%;
  width: min(760px, 92vw);
  aspect-ratio: 1 / 1;
  background:
    radial-gradient(circle at 58% 42%, rgba(62, 208, 196, .16), transparent 60%),
    radial-gradient(circle at 32% 68%, rgba(198, 255, 62, .13), transparent 58%);
  pointer-events: none;
  z-index: -1;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -18%;
  width: min(560px, 78vw);
  height: 190px;
  background: linear-gradient(102deg, transparent 0 10%, rgba(255, 107, 26, .10) 10% 100%);
  transform: rotate(-8deg);
  clip-path: polygon(0 26%, 100% 0, 100% 74%, 0 100%);
  pointer-events: none;
  z-index: -1;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: clamp(20px, 3.4vw, 34px);
}

.page-about .about-hero .eyebrow {
  margin: 0 0 14px;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.page-about .about-title {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 7.4vw, 82px);
  line-height: .98;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-about .about-title em {
  font-style: normal;
  color: var(--lime);
}

.page-about .about-lede {
  margin: 0;
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--silver);
}

.page-about .hero-stats {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .hero-stat {
  background: var(--ink);
  padding: clamp(14px, 2.2vw, 22px);
}

.page-about .about-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 4.4vw, 46px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--lime);
}

.page-about .about-stat-label {
  display: block;
  margin-top: 9px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--silver);
}

@media (min-width: 760px) {
  .page-about .hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 主体骨架 ---------- */

.page-about .about-index {
  padding-top: clamp(40px, 7vw, 88px);
  padding-bottom: clamp(52px, 8vw, 108px);
}

.page-about .about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
}

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

/* ---------- 左侧固定索引 ---------- */

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

@media (min-width: 1000px) {
  .page-about .about-rail {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 30px);
    align-self: start;
    padding-left: 18px;
    border-left: 2px solid var(--about-track);
  }
}

.page-about .rail-title {
  margin: 0;
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--silver);
}

.page-about .about-toc {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .about-toc li {
  margin: 0;
}

.page-about .about-toc .toc-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 0;
  font-size: 13px;
  line-height: 1.4;
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-about .about-toc .toc-link .mono {
  font-size: 11px;
  opacity: .55;
  transition: opacity .18s var(--ease), color .18s var(--ease);
}

.page-about .about-toc .toc-link:hover {
  color: var(--paper);
}

.page-about .about-toc .toc-link[data-active="true"] {
  color: var(--paper);
  border-bottom-color: var(--lime);
}

.page-about .about-toc .toc-link[data-active="true"] .mono {
  color: var(--lime);
  opacity: 1;
}

/* ---------- 右侧纵向内容流 ---------- */

.page-about .about-stream {
  position: relative;
  display: grid;
  gap: clamp(56px, 9vw, 116px);
  min-width: 0;
}

@media (min-width: 1000px) {
  .page-about .about-stream {
    padding-left: 36px;
  }

  .page-about .about-stream::before {
    content: "";
    position: absolute;
    left: 7px;
    top: 6px;
    bottom: 6px;
    width: 2px;
    background: linear-gradient(180deg,
      rgba(198, 255, 62, .66) 0%,
      rgba(198, 255, 62, .26) 62%,
      rgba(198, 255, 62, .06) 100%);
  }
}

.page-about .about-section {
  position: relative;
  min-width: 0;
}

@media (min-width: 1000px) {
  .page-about .about-section::before {
    content: "";
    position: absolute;
    left: -34px;
    top: 16px;
    width: 10px;
    height: 10px;
    background: var(--ink);
    border: 2px solid var(--lime);
    transform: rotate(45deg);
  }
}

.page-about .about-sec-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 18px;
  align-items: baseline;
  margin-bottom: clamp(20px, 3vw, 34px);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-sec-num {
  grid-row: span 2;
  font-size: clamp(28px, 4.4vw, 48px);
  font-weight: 700;
  line-height: 1;
  color: rgba(198, 255, 62, .85);
}

@supports (-webkit-text-stroke: 1px red) {
  .page-about .about-sec-num {
    color: transparent;
    -webkit-text-stroke: 1px rgba(198, 255, 62, .68);
  }
}

.page-about .about-sec-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.1vw, 34px);
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .about-sec-lede {
  margin: 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.72;
  color: var(--silver);
}

.page-about .prose p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--paper);
  max-width: 34em;
}

.page-about .prose a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 62, .45);
}

.page-about .prose a:hover {
  border-bottom-color: var(--lime);
}

/* ---------- 01 团队构成 ---------- */

.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  align-items: start;
}

@media (min-width: 860px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }
}

.page-about .about-split-text {
  min-width: 0;
}

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

.page-about .role-grid {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

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

.page-about .role-card {
  position: relative;
  padding: 20px 22px 24px;
  background: var(--moss);
  border: 1px solid var(--line);
  border-left: 3px solid var(--lime);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
  transition: transform .24s var(--ease), background-color .24s var(--ease);
}

.page-about .role-card:hover {
  transform: translateY(-4px);
  background: #1a3b32;
}

.page-about .role-id {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--silver);
}

.page-about .role-name {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--paper);
}

.page-about .role-desc {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.76;
  color: var(--silver);
}

.page-about .role-meta {
  margin: 0;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--lime);
}

/* ---------- 02 覆盖版图 ---------- */

.page-about .coverage-panel {
  padding: clamp(18px, 3vw, 32px);
  background: var(--moss);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-about .coverage-map {
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-about .coverage-svg {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}

.page-about .cov-shape {
  fill: rgba(10, 31, 25, .72);
  stroke: rgba(169, 182, 177, .38);
  stroke-width: 1.4;
}

.page-about .cov-line {
  stroke: rgba(198, 255, 62, .3);
  stroke-width: 1;
  stroke-dasharray: 4 7;
  fill: none;
}

.page-about .cov-dot {
  fill: var(--lime);
}

.page-about .cov-label {
  fill: var(--silver);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
}

.page-about .cov-label--dim {
  fill: rgba(169, 182, 177, .6);
  font-size: 11px;
  letter-spacing: .12em;
}

.page-about .league-table {
  border-top: 1px solid var(--line);
}

.page-about .league-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr) auto;
  gap: 12px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  color: var(--paper);
}

.page-about .league-row--head {
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--silver);
}

.page-about .league-name {
  font-weight: 600;
}

.page-about .league-span {
  font-size: 12px;
  color: var(--silver);
}

.page-about .league-num {
  font-size: 20px;
  font-weight: 700;
  color: var(--teal);
  line-height: 1;
}

.page-about .coverage-note {
  margin: clamp(16px, 2.6vw, 24px) 0 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--silver);
  max-width: 36em;
}

.page-about .coverage-figure {
  margin: clamp(24px, 4vw, 38px) 0 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

@media (min-width: 720px) {
  .page-about .coverage-figure {
    grid-template-columns: minmax(0, 200px) minmax(0, 1fr);
    align-items: center;
  }
}

.page-about .coverage-caption {
  font-size: 13px;
  line-height: 1.7;
  color: var(--silver);
  max-width: 30em;
}

/* ---------- 03 三重核对 ---------- */

.page-about .check-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .check-step {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 6px 20px;
  padding: clamp(18px, 2.6vw, 26px) 0;
  border-bottom: 1px dashed var(--line);
}

.page-about .check-step:first-child {
  border-top: 1px dashed var(--line);
}

.page-about .check-mark {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--lime);
}

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

.page-about .check-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--paper);
}

.page-about .check-desc {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--silver);
  max-width: 36em;
}

.page-about .check-meta {
  margin: 0;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--teal);
}

.page-about .verify-note {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 18px 20px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--paper);
  max-width: 40em;
}

/* ---------- 04 组织网络 ---------- */

.page-about .network-figure {
  margin: 0 0 clamp(22px, 3.4vw, 34px);
}

.page-about .network-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
}

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

.page-about .network-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--paper);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.page-about .network-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .network-list li {
  font-size: 14px;
  line-height: 1.76;
  color: var(--silver);
  padding-left: 14px;
  border-left: 2px solid rgba(198, 255, 62, .35);
}

.page-about .network-list strong {
  color: var(--paper);
  font-weight: 600;
}

/* ---------- 05 版本演进 ---------- */

.page-about .ver-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .ver-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px 22px;
  padding: clamp(16px, 2.4vw, 22px) 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 700px) {
  .page-about .ver-item {
    grid-template-columns: 84px minmax(0, 1fr);
    align-items: baseline;
  }
}

.page-about .ver-code {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--lime);
}

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

.page-about .ver-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--paper);
}

.page-about .ver-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--silver);
  max-width: 38em;
}

/* ---------- 06 荣誉与引用 ---------- */

.page-about .honor-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .honor-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px 18px;
  align-items: baseline;
  padding: 15px 0;
  border-bottom: 1px solid rgba(233, 179, 60, .3);
}

.page-about .honor-item:first-child {
  border-top: 1px solid rgba(233, 179, 60, .3);
}

.page-about .honor-label {
  font-size: 15px;
  line-height: 1.66;
  color: var(--paper);
}

.page-about .honor-tag {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--amber);
  white-space: nowrap;
}

.page-about .exposure-block {
  margin-top: clamp(26px, 4vw, 40px);
}

.page-about .exposure-title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .exposure-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

@media (min-width: 700px) {
  .page-about .exposure-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .exposure-list li {
  position: relative;
  padding: 14px 16px 14px 34px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--silver);
  background: rgba(22, 51, 43, .6);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-about .exposure-list li::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 22px;
  width: 7px;
  height: 7px;
  background: var(--amber);
  transform: rotate(45deg);
}

.page-about .exposure-note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--silver);
  max-width: 36em;
}

.page-about .exposure-note a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 62, .45);
}

/* ---------- 07 一起做事 ---------- */

.page-about .about-section--last {
  padding-bottom: 8px;
}

.page-about .about-cta {
  position: relative;
  padding: clamp(26px, 4.6vw, 48px);
  background: linear-gradient(140deg, var(--moss) 0%, var(--ink) 78%);
  border: 1px solid rgba(198, 255, 62, .3);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), calc(100% - 34px) 100%, 0 100%);
}

.page-about .about-cta .eyebrow {
  margin: 0 0 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.page-about .about-cta-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-about .about-cta-text {
  margin: 0 0 clamp(20px, 3vw, 30px);
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver);
  max-width: 34em;
}

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

.page-about .about-cta-actions .btn {
  text-decoration: none;
}

/* ---------- 图片容器兜底 ---------- */

.page-about .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}
<<<END>>>