.page-about {
  --about-chapter-gap: clamp(56px, 9vw, 128px);
  --about-radius-inner: clamp(14px, 2vw, 22px);
  position: relative;
  background:
    radial-gradient(120% 62% at 88% -8%, rgba(123, 77, 255, 0.34), transparent 62%),
    radial-gradient(90% 46% at 4% 6%, rgba(198, 255, 61, 0.12), transparent 58%),
    var(--c-ink);
  color: var(--c-paper);
  overflow-x: clip;
}

.page-about .about-crumbs {
  padding-top: clamp(16px, 3vw, 30px);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding-block: clamp(28px, 5vw, 60px) clamp(44px, 7vw, 96px);
}

.page-about .about-hero-inner {
  display: grid;
  gap: clamp(28px, 5vw, 60px);
  align-items: center;
}

.page-about .about-hero-copy .eyebrow {
  margin: 0;
}

.page-about .about-hero-copy h1 {
  margin: clamp(12px, 2vw, 20px) 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.4vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--c-paper);
}

.page-about .about-hero-copy .lede {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: rgba(246, 241, 228, 0.82);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .about-live {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 8px 15px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(198, 255, 61, 0.3);
  background: rgba(10, 26, 47, 0.66);
  color: var(--c-mint);
  font-size: 12px;
  letter-spacing: 0.05em;
}

.page-about .about-live-dot {
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--c-lime);
  animation: about-live-pulse 2.4s var(--ease-out) infinite;
}

@keyframes about-live-pulse {
  0%,
  100% { box-shadow: 0 0 0 0 rgba(198, 255, 61, 0.6); }
  50% { box-shadow: 0 0 0 9px rgba(198, 255, 61, 0); }
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: rgba(143, 163, 191, 0.26);
}

.page-about .about-stat {
  background: linear-gradient(158deg, #1a3768, #0d2143);
  padding: clamp(16px, 2.6vw, 26px);
}

.page-about .about-stat dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-mist);
}

.page-about .about-stat dd {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.6vw, 44px);
  line-height: 1;
  color: var(--c-lime);
}

/* ---------- 章节骨架 ---------- */

.page-about .about-chapter {
  position: relative;
  padding-block: var(--about-chapter-gap);
}

.page-about .about-chapter-head {
  display: grid;
  gap: 10px 24px;
  align-items: end;
  margin-bottom: clamp(22px, 3.4vw, 42px);
}

.page-about .about-chapter-titles .eyebrow {
  margin: 0 0 8px;
}

.page-about .about-chapter-titles .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--c-paper);
}

.page-about .about-chapter-note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-mist);
}

.page-about .about-chapter-lede {
  max-width: 66ch;
  margin: 0 0 clamp(20px, 3vw, 34px);
  color: rgba(246, 241, 228, 0.78);
}

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

/* ---------- 01 品牌在做什么 ---------- */

.page-about .about-split {
  display: grid;
  gap: clamp(24px, 4vw, 52px);
  align-items: center;
}

.page-about .about-split-text .prose {
  margin: 0;
  font-size: clamp(15px, 1.6vw, 16.5px);
  line-height: 1.9;
  color: rgba(246, 241, 228, 0.84);
}

.page-about .about-scenes {
  list-style: none;
  display: grid;
  gap: 12px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
}

.page-about .about-scene {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: clamp(14px, 2vw, 20px);
  border-radius: var(--r-lg);
  border: 1px solid rgba(143, 163, 191, 0.22);
  background: linear-gradient(135deg, rgba(123, 77, 255, 0.18), rgba(22, 48, 90, 0.42) 68%);
  transition: transform 0.3s var(--ease-out), border-color 0.3s var(--ease-out);
}

.page-about .about-scene:hover {
  transform: translateY(-2px);
  border-color: rgba(198, 255, 61, 0.48);
}

.page-about .about-scene-index {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-orange);
  white-space: nowrap;
}

.page-about .about-scene h3 {
  margin: 0 0 6px;
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 700;
  color: var(--c-paper);
}

.page-about .about-scene p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(246, 241, 228, 0.76);
}

.page-about .about-split-media .media-frame {
  width: 100%;
  border-radius: var(--r-lg);
}

/* ---------- 02 发展节点 ---------- */

.page-about .about-timeline {
  display: flex;
  gap: 18px;
  list-style: none;
  margin: 0;
  padding: 6px var(--frame-x) clamp(20px, 4vw, 40px);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--c-violet) transparent;
}

.page-about .about-timeline::-webkit-scrollbar {
  height: 6px;
}

.page-about .about-timeline::-webkit-scrollbar-track {
  background: rgba(143, 163, 191, 0.14);
  border-radius: var(--r-pill);
}

.page-about .about-timeline::-webkit-scrollbar-thumb {
  background: linear-gradient(90deg, var(--c-violet), var(--c-lime));
  border-radius: var(--r-pill);
}

.page-about .about-node {
  position: relative;
  flex: 0 0 clamp(228px, 74vw, 300px);
  scroll-snap-align: start;
  padding: 46px clamp(16px, 2.2vw, 22px) 22px;
  border-radius: var(--r-lg);
  border: 1px solid rgba(143, 163, 191, 0.22);
  background: linear-gradient(180deg, rgba(22, 48, 90, 0.94), rgba(10, 26, 47, 0.94));
  transition: transform 0.3s var(--ease-out), border-color 0.3s var(--ease-out);
}

.page-about .about-node:hover {
  transform: translateY(-3px);
  border-color: rgba(198, 255, 61, 0.45);
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  top: 18px;
  left: 20px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--c-lime);
  box-shadow: 0 0 0 5px rgba(198, 255, 61, 0.14);
}

.page-about .about-node::after {
  content: "";
  position: absolute;
  top: 24px;
  left: 38px;
  right: -18px;
  height: 2px;
  background: linear-gradient(90deg, rgba(198, 255, 61, 0.68), rgba(123, 77, 255, 0.6));
}

.page-about .about-node:last-child::after {
  display: none;
}

.page-about .about-node-year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-orange);
}

.page-about .about-node h3 {
  margin: 9px 0 8px;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 800;
  color: var(--c-paper);
}

.page-about .about-node p {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
  color: rgba(246, 241, 228, 0.74);
}

/* ---------- 03 协作分工 ---------- */

.page-about .about-teams {
  display: grid;
  gap: 12px;
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-about .about-team {
  border-radius: var(--r-lg);
  border: 1px solid rgba(143, 163, 191, 0.22);
  background: rgba(22, 48, 90, 0.5);
  overflow: hidden;
  transition: border-color 0.3s var(--ease-out), background 0.3s var(--ease-out);
}

.page-about .about-team[open] {
  border-color: rgba(198, 255, 61, 0.45);
  background: linear-gradient(135deg, rgba(123, 77, 255, 0.2), rgba(22, 48, 90, 0.72));
}

.page-about .about-team > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: clamp(14px, 2vw, 20px) clamp(16px, 2.4vw, 24px);
  cursor: pointer;
  list-style: none;
  color: var(--c-paper);
}

.page-about .about-team > summary::-webkit-details-marker {
  display: none;
}

.page-about .about-team > summary:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: -2px;
}

.page-about .about-team-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-lime);
}

.page-about .about-team-role {
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 700;
}

.page-about .about-team-meta {
  display: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--c-mist);
}

.page-about .about-team-toggle {
  position: relative;
  width: 20px;
  height: 20px;
  flex: none;
}

.page-about .about-team-toggle::before,
.page-about .about-team-toggle::after {
  content: "";
  position: absolute;
  border-radius: 2px;
  background: var(--c-orange);
}

.page-about .about-team-toggle::before {
  top: 9px;
  left: 2px;
  right: 2px;
  height: 2px;
}

.page-about .about-team-toggle::after {
  top: 2px;
  bottom: 2px;
  left: 9px;
  width: 2px;
  transition: transform 0.25s var(--ease-out);
}

.page-about .about-team[open] .about-team-toggle::after {
  transform: scaleY(0);
}

.page-about .about-team-body {
  padding: 0 clamp(16px, 2.4vw, 24px) clamp(16px, 2.4vw, 22px);
}

.page-about .about-team-body p {
  margin: 0;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.82;
  color: rgba(246, 241, 228, 0.78);
}

/* ---------- 04 内容流程 ---------- */

.page-about .about-flow {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

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

.page-about .about-flow-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: clamp(14px, 2vw, 20px);
  border-radius: var(--r-lg);
  border-left: 6px solid var(--c-violet);
  background: var(--c-paper);
  color: var(--c-brown);
}

.page-about .about-flow-steps li:nth-child(2) {
  border-left-color: var(--c-lime);
}

.page-about .about-flow-steps li:nth-child(3) {
  border-left-color: var(--c-orange);
}

.page-about .about-flow-steps li:nth-child(4) {
  border-left-color: #2f8f6e;
}

.page-about .about-flow-steps li .mono {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(36, 28, 23, 0.55);
}

.page-about .about-flow-steps li h3 {
  margin: 0 0 6px;
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 800;
  color: var(--c-brown);
}

.page-about .about-flow-steps li p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: rgba(36, 28, 23, 0.78);
}

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

.page-about .about-flow-figure .media-frame {
  border-radius: var(--r-lg);
}

.page-about .about-flow-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--c-mist);
}

/* ---------- 05 合作生态 ---------- */

.page-about .about-partner-tags {
  margin: 0 0 clamp(20px, 3vw, 32px);
}

.page-about .about-partners {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-about .about-partner-cards {
  display: grid;
  gap: 12px;
}

.page-about .about-partner-card {
  padding: clamp(16px, 2.4vw, 24px);
  border-radius: var(--r-lg);
  border: 1px solid rgba(143, 163, 191, 0.22);
  background: linear-gradient(135deg, rgba(198, 255, 61, 0.1), rgba(22, 48, 90, 0.52) 70%);
  transition: border-color 0.3s var(--ease-out);
}

.page-about .about-partner-card:hover {
  border-color: rgba(123, 77, 255, 0.6);
}

.page-about .about-partner-card h3 {
  margin: 0 0 8px;
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 800;
  color: var(--c-lime);
}

.page-about .about-partner-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(246, 241, 228, 0.78);
}

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

.page-about .about-partner-figure .media-frame {
  border-radius: var(--r-lg);
}

.page-about .about-partner-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: 0.06em;
  color: var(--c-mist);
}

/* ---------- 06 资质与公开信息 ---------- */

.page-about .about-credits {
  margin-top: clamp(48px, 8vw, 108px);
  padding-block: clamp(48px, 7vw, 96px);
  border-radius: var(--r-xl) var(--r-xl) 0 0;
  background: var(--c-paper);
  color: var(--c-brown);
}

.page-about .about-credits .eyebrow {
  background: rgba(36, 28, 23, 0.08);
  border-color: rgba(36, 28, 23, 0.18);
  color: var(--c-brown);
}

.page-about .about-credits .section-title {
  color: var(--c-brown);
}

.page-about .about-credits .section-number {
  color: rgba(36, 28, 23, 0.22);
}

.page-about .about-credits-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: rgba(36, 28, 23, 0.16);
}

.page-about .about-credits-grid > div {
  padding: clamp(16px, 2.4vw, 24px);
  background: var(--c-paper);
}

.page-about .about-credits-grid dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(36, 28, 23, 0.55);
}

.page-about .about-credits-grid dd {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 2.3vw, 23px);
  line-height: 1.32;
  color: var(--c-brown);
}

.page-about .about-credits-note {
  margin: clamp(20px, 3vw, 30px) 0 0;
  max-width: 72ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(36, 28, 23, 0.78);
}

.page-about .about-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

/* ---------- 栅格与断点 ---------- */

@media (min-width: 600px) {
  .page-about .about-team > summary {
    grid-template-columns: auto minmax(0, 1fr) auto auto;
  }

  .page-about .about-team-meta {
    display: inline;
  }
}

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

@media (min-width: 960px) {
  .page-about .about-hero-inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-about .about-flow {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }

  .page-about .about-partners {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }
}

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

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

@media (min-width: 1400px) {
  .page-about .about-timeline {
    padding-inline: max(var(--frame-x), calc((100vw - var(--shell)) / 2));
  }
}

@media (max-width: 480px) {
  .page-about .about-scene {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .page-about .about-flow-steps li {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-live-dot {
    animation: none;
  }

  .page-about .about-scene:hover,
  .page-about .about-node:hover {
    transform: none;
  }

  .page-about .about-node,
  .page-about .about-team-toggle::after {
    transition: none;
  }
}
<<<END>>>