.page-about {
  --rail-w: 2px;
  --rail-x: 10px;
  --rail-gap: 34px;
  background: var(--paper);
  overflow-x: hidden;
}

@media (min-width: 768px) {
  .page-about {
    --rail-x: 14px;
    --rail-gap: 46px;
  }
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(20px, 3vw, 34px) 0 clamp(48px, 7vw, 86px);
  background: linear-gradient(180deg, #FBF8F2 0%, #F7F5EE 52%, #E7F1FA 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -34%;
  right: -16%;
  width: min(720px, 90vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 32%, rgba(22, 122, 85, .26), rgba(22, 122, 85, 0) 64%),
    radial-gradient(circle at 70% 62%, rgba(47, 128, 201, .24), rgba(47, 128, 201, 0) 62%),
    radial-gradient(circle at 44% 90%, rgba(232, 85, 31, .16), rgba(232, 85, 31, 0) 56%);
  filter: blur(2px);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: -12%;
  bottom: -62px;
  width: 124%;
  height: 146px;
  background: linear-gradient(90deg, rgba(155, 211, 74, .22), rgba(47, 128, 201, .18));
  clip-path: ellipse(58% 100% at 50% 100%);
  pointer-events: none;
}

.page-about .about-hero .breadcrumbs {
  margin-bottom: clamp(22px, 4vw, 42px);
}

.page-about .about-hero-grid {
  display: grid;
  gap: clamp(28px, 5vw, 52px);
}

@media (min-width: 940px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, .72fr);
    align-items: end;
    gap: clamp(32px, 5vw, 74px);
  }
}

.page-about .about-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(30px, 5.3vw, 52px);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-about .about-hero .lede {
  margin-top: 18px;
  max-width: 38em;
  color: var(--ink-soft);
  font-size: clamp(15px, 1.6vw, 17.5px);
  line-height: 1.85;
}

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

.page-about .about-hero-side {
  padding: clamp(20px, 2.4vw, 28px);
  border-radius: var(--r-lg);
}

.page-about .side-kicker {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--grass);
}

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

.page-about .fact-list li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-about .fact-list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .fact-list .stat-value {
  flex: none;
  min-width: 4.6ch;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 24px;
  line-height: 1.1;
  color: var(--flame);
}

.page-about .fact-list .stat-label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* ---------- 赛道区块 ---------- */
.page-about .about-stage {
  position: relative;
  background: var(--paper);
}

.page-about .about-stage--grass {
  background: linear-gradient(180deg, #DFF0E6 0%, #ECF6F0 100%);
}

.page-about .about-stage--sky {
  background: linear-gradient(180deg, #E7F1FA 0%, #F4F9FC 100%);
}

.page-about .about-stage--deep {
  background: linear-gradient(155deg, #0B2A22 0%, #10523C 58%, #0F6546 100%);
  color: #F2F7F4;
}

.page-about .stage-inner {
  position: relative;
  padding: 58px 0 58px var(--rail-gap);
}

@media (min-width: 768px) {
  .page-about .stage-inner {
    padding: 78px 0 78px var(--rail-gap);
  }
}

.page-about .stage-inner::before {
  content: "";
  position: absolute;
  left: var(--rail-x);
  top: 0;
  bottom: 0;
  width: var(--rail-w);
  background: linear-gradient(180deg, rgba(22, 122, 85, .30), rgba(47, 128, 201, .26));
}

.page-about .about-stage--deep .stage-inner::before {
  background: linear-gradient(180deg, rgba(155, 211, 74, .58), rgba(47, 128, 201, .45));
}

.page-about .stage-node {
  position: absolute;
  left: calc(var(--rail-x) - 5px);
  top: 58px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--flame);
  box-shadow: 0 0 0 5px rgba(232, 85, 31, .15);
}

@media (min-width: 768px) {
  .page-about .stage-node {
    top: 78px;
  }
}

.page-about .about-stage--deep .stage-node {
  box-shadow: 0 0 0 5px rgba(155, 211, 74, .22);
}

.page-about .stage-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.page-about .stage-idx {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--flame);
}

.page-about .about-stage--deep .stage-idx {
  color: var(--lime);
}

.page-about .stage-head .section-title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(23px, 3.6vw, 36px);
  line-height: 1.24;
  letter-spacing: -.005em;
  color: var(--ink);
}

.page-about .about-stage--deep .section-title {
  color: #F4F9F5;
}

.page-about .stage-inner > .lede {
  margin-top: 14px;
  max-width: 36em;
  color: var(--ink-soft);
}

.page-about .about-stage--deep .stage-inner > .lede {
  color: rgba(240, 248, 243, .82);
}

.page-about .stage-body {
  display: grid;
  gap: 26px;
  margin-top: 26px;
}

@media (min-width: 1000px) {
  .page-about .stage-body {
    grid-template-columns: minmax(0, 1fr) 264px;
    gap: 46px;
    align-items: start;
  }
}

.page-about .stage-main .prose p {
  color: var(--ink-soft);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-about .stage-main .prose p + p {
  margin-top: 14px;
}

.page-about .stage-side {
  padding: 20px 18px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .72);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
}

.page-about .stage-side .side-kicker {
  margin-bottom: 12px;
}

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

.page-about .tick-list li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-about .tick-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--grass);
  transform: rotate(45deg);
}

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

.page-about .tl-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: 22px 0;
  border-bottom: 1px solid rgba(12, 27, 42, .12);
}

.page-about .tl-item:first-child {
  border-top: 1px solid rgba(12, 27, 42, .12);
}

@media (min-width: 720px) {
  .page-about .tl-item {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px 32px;
    align-items: baseline;
  }
}

.page-about .tl-body {
  display: grid;
  gap: 4px;
}

.page-about .tl-era {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--grass);
}

.page-about .tl-title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.4;
  color: var(--ink);
}

.page-about .tl-text {
  margin: 2px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .tl-stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0;
  white-space: nowrap;
}

.page-about .tl-stat .stat-value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(24px, 3.4vw, 30px);
  line-height: 1;
  color: var(--flame);
}

.page-about .tl-stat .stat-label {
  font-size: 12px;
  color: var(--ink-mute);
}

/* ---------- 球场 ---------- */
.page-about .center-figure {
  margin: 26px 0 0;
}

.page-about .center-prose {
  margin-top: 24px;
}

.page-about .center-prose p {
  color: var(--ink-soft);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-about .center-prose p + p {
  margin-top: 14px;
}

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

.page-about .pitch-map {
  display: grid;
  gap: 10px;
  margin-top: 28px;
  padding: 14px;
  border-radius: var(--r-lg);
  border: 1px solid rgba(22, 122, 85, .20);
  background:
    repeating-linear-gradient(90deg, rgba(12, 27, 42, .05) 0 1px, transparent 1px 30px),
    linear-gradient(180deg, rgba(22, 122, 85, .10), rgba(47, 128, 201, .07)),
    #F2F8F3;
}

@media (min-width: 760px) {
  .page-about .pitch-map {
    grid-template-columns: 1.7fr 1fr;
    grid-template-rows: repeat(3, minmax(74px, auto));
  }

  .page-about .pitch-zone--main {
    grid-row: 1 / span 3;
  }
}

.page-about .pitch-zone {
  position: relative;
  display: grid;
  gap: 3px;
  align-content: center;
  padding: 14px 16px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .84);
  border: 1px solid rgba(22, 122, 85, .22);
  transition: border-color .22s var(--ease), background-color .22s var(--ease), transform .22s var(--ease);
}

.page-about .pitch-zone:hover,
.page-about .pitch-zone:focus-visible {
  outline: none;
  border-color: var(--flame);
  background: #fff;
  transform: translateY(-2px);
}

.page-about .zone-name {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 15px;
  color: var(--ink);
}

.page-about .zone-meta {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-mute);
}

/* ---------- 数据记录 ---------- */
.page-about .record-figure {
  margin: 0 0 26px;
}

.page-about .record-frame {
  aspect-ratio: 3 / 2;
}

.page-about .flow-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: flow;
}

.page-about .flow-list > li {
  counter-increment: flow;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

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

.page-about .flow-list > li::before {
  content: counter(flow, decimal-leading-zero);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 14px;
  line-height: 1.7;
  color: var(--sky);
}

.page-about .flow-body h3 {
  margin: 0 0 6px;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 17px;
  color: var(--ink);
}

.page-about .flow-body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 团队 ---------- */
.page-about .team-grid {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

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

@media (min-width: 1080px) {
  .page-about .team-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .team-card {
  padding: 22px 20px 24px;
  border-radius: var(--r-md);
  border-top: 3px solid var(--grass);
}

.page-about .team-tag {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--grass);
}

.page-about .team-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.45;
  color: var(--ink);
}

.page-about .team-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 合作伙伴 ---------- */
.page-about .partner-grid {
  display: grid;
  gap: 28px;
  margin-top: 28px;
}

@media (min-width: 900px) {
  .page-about .partner-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 42px;
    align-items: start;
  }
}

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

.page-about .partner-frame {
  aspect-ratio: 2 / 1;
}

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

.page-about .partner-list > li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 18px 0;
  border-top: 1px solid rgba(12, 27, 42, .12);
}

.page-about .partner-list > li:last-child {
  border-bottom: 1px solid rgba(12, 27, 42, .12);
}

.page-about .partner-list .stat-value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 26px;
  line-height: 1.1;
  color: var(--flame);
  min-width: 2.2ch;
}

.page-about .partner-list h3 {
  margin: 0 0 6px;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 16px;
  color: var(--ink);
}

.page-about .partner-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 下一步（深色） ---------- */
.page-about .next-grid {
  display: grid;
  gap: 18px;
  margin-top: 32px;
}

@media (min-width: 860px) {
  .page-about .next-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .next-card {
  padding: 24px 22px 26px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .17);
  backdrop-filter: blur(8px);
}

.page-about .next-num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--lime);
}

.page-about .next-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.45;
  color: #FFFFFF;
}

.page-about .next-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(240, 248, 243, .80);
}

.page-about .next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.page-about .about-stage--deep .btn-ghost {
  color: #F4F9F5;
  border-color: rgba(244, 249, 245, .45);
}

.page-about .about-stage--deep .btn-ghost:hover {
  border-color: #F4F9F5;
  background: rgba(255, 255, 255, .10);
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .pitch-zone,
  .page-about .btn,
  .page-about [data-reveal] {
    transition: none !important;
    transform: none !important;
    animation: none !important;
  }
}
<<<END>>>