.page-about {
  --about-violet: var(--accent-violet);
  --about-cyan: var(--accent-cyan);
  --about-amber: var(--accent-amber);
  --about-surface: var(--ink-void);
  --about-panel: var(--ink-nebula);
}

.page-about h2 {
  font-size: clamp(1.5rem, 2.8vw, 2.1rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin: 0 0 0.7rem;
}

.page-about h3 {
  font-size: 1.08rem;
  line-height: 1.35;
  margin: 0 0 0.4rem;
}

.page-about [data-reveal] {
  transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
}

.page-about [data-reveal="80"] {
  transition-delay: 80ms;
}

.page-about [data-reveal="120"] {
  transition-delay: 120ms;
}

.page-about [data-reveal="160"] {
  transition-delay: 160ms;
}

.page-about [data-reveal="240"] {
  transition-delay: 240ms;
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ===== 首屏 ===== */
.page-about .about-hero {
  position: relative;
  padding: clamp(5.5rem, 11vw, 9rem) 0 clamp(3rem, 6vw, 4.5rem);
  overflow: hidden;
  isolation: isolate;
}

.page-about .about-hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-about .about-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.38;
  filter: saturate(0.65) brightness(0.85);
}

.page-about .about-hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 18% 12%, rgba(139, 92, 246, 0.34), transparent 55%),
    radial-gradient(ellipse at 85% 32%, rgba(34, 211, 238, 0.18), transparent 50%),
    linear-gradient(180deg, rgba(5, 7, 20, 0.5) 0%, rgba(5, 7, 20, 0.94) 76%, var(--ink-void) 100%);
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 1;
}

.page-about .about-hero-grid {
  margin-top: clamp(1.5rem, 3vw, 2.5rem);
  align-items: end;
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.page-about .about-hero-eyebrow {
  color: var(--accent-cyan);
  margin-bottom: 0.9rem;
}

.page-about .about-hero-title {
  font-size: clamp(2.2rem, 5.4vw, 4.6rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin: 0 0 1.2rem;
  max-width: 14em;
}

.page-about .about-hero-title::after {
  content: "";
  display: block;
  width: 4.5rem;
  height: 3px;
  margin-top: 1.4rem;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--accent-violet), var(--accent-cyan));
}

.page-about .about-hero-lede {
  color: var(--text-muted);
  font-size: clamp(1rem, 1.3vw, 1.12rem);
  line-height: 1.8;
  max-width: 36em;
  margin: 0;
}

.page-about .about-hero-aside {
  border-left: 1px solid var(--line-glow);
  padding-left: clamp(1rem, 2vw, 1.5rem);
}

.page-about .about-side-note {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin: 0 0 1rem;
}

.page-about .about-hero-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-about .about-hero-facts li {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  border-top: 1px dashed rgba(42, 55, 102, 0.7);
  padding-top: 0.85rem;
}

.page-about .about-hero-facts li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-hero-facts .data-num {
  font-size: 1.7rem;
  line-height: 1;
  color: var(--accent-amber);
}

.page-about .about-hero-facts span:last-child {
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* ===== 品牌故事 ===== */
.page-about .about-story {
  padding: clamp(3.5rem, 7vw, 6rem) 0;
  background: var(--ink-void);
}

.page-about .about-story-head {
  margin-bottom: clamp(1.75rem, 3.5vw, 2.75rem);
  max-width: 44rem;
}

.page-about .about-story-grid {
  gap: clamp(1.75rem, 3vw, 3rem);
  align-items: start;
}

.page-about .about-story-text {
  color: var(--text-muted);
  font-size: clamp(0.98rem, 1.1vw, 1.06rem);
  line-height: 1.85;
  margin: 0 0 1.1rem;
}

.page-about .about-story-text:last-child {
  margin-bottom: 0;
}

.page-about .about-story-aside {
  padding: clamp(1.1rem, 2vw, 1.5rem);
  border: 1px solid var(--line-glow);
  border-radius: var(--radius-card);
  background: linear-gradient(160deg, rgba(17, 28, 74, 0.7), rgba(11, 18, 48, 0.5));
}

.page-about .about-story-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .about-story-points li {
  display: grid;
  gap: 0.25rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(42, 55, 102, 0.7);
}

.page-about .about-story-points li:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .about-story-points strong {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--accent-cyan);
  font-weight: 500;
}

.page-about .about-story-points span {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.75;
}

/* ===== 内容生产体系 ===== */
.page-about .about-pipeline {
  padding: clamp(3.5rem, 7vw, 6rem) 0;
  background: var(--ink-night);
}

.page-about .about-pipeline-grid {
  gap: clamp(1.75rem, 3vw, 3rem);
  align-items: start;
}

.page-about .about-pipeline-media {
  margin: 0;
}

.page-about .about-pipeline-media .media-frame {
  border: 1px solid var(--line-glow);
}

.page-about .about-pipeline-caption {
  margin-top: 0.8rem;
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.65;
}

.page-about .about-pipeline-lede {
  color: var(--text-muted);
  line-height: 1.8;
  margin: 0 0 1.5rem;
}

.page-about .about-pipeline-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .about-pipeline-steps li {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 0.85rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(42, 55, 102, 0.7);
  align-items: start;
}

.page-about .about-pipeline-steps li:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .about-step-idx {
  font-size: 0.85rem;
  color: var(--accent-violet);
  letter-spacing: 0.06em;
  line-height: 1.9;
}

.page-about .about-pipeline-steps h3 {
  margin-bottom: 0.25rem;
}

.page-about .about-pipeline-steps p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.75;
}

/* ===== 版本演进 ===== */
.page-about .about-versions {
  padding: clamp(3.5rem, 7vw, 6rem) 0;
  background: var(--ink-void);
  position: relative;
  overflow: hidden;
}

.page-about .about-versions::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 10% 0%, rgba(139, 92, 246, 0.16), transparent 42%);
  pointer-events: none;
}

.page-about .about-versions-head {
  position: relative;
  margin-bottom: clamp(2rem, 4vw, 3rem);
  max-width: 46rem;
}

.page-about .about-versions-lede {
  color: var(--text-muted);
  line-height: 1.8;
  margin: 0;
}

.page-about .version-track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
  position: relative;
}

.page-about .version-step {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  position: relative;
}

.page-about .version-side {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
}

.page-about .version-tag {
  font-size: clamp(1.65rem, 3.2vw, 2.4rem);
  font-weight: 700;
  line-height: 1;
  color: var(--accent-amber);
  letter-spacing: -0.01em;
}

.page-about .version-side-note {
  font-size: 0.8rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

.page-about .version-body {
  border: 1px solid var(--line-glow);
  border-radius: var(--radius-card);
  background: linear-gradient(160deg, rgba(17, 28, 74, 0.85), rgba(11, 18, 48, 0.65));
  padding: 1rem 1.1rem;
}

.page-about .version-summary {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem 1rem;
  cursor: pointer;
  list-style: none;
}

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

.page-about .version-summary-title {
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--text-primary);
}

.page-about .version-summary-hint {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
  white-space: nowrap;
}

.page-about .version-summary-hint::after {
  content: "+";
  font-size: 0.95rem;
  line-height: 1;
}

.page-about .version-details[open] .version-summary-hint::after {
  content: "−";
}

.page-about .version-body-inner {
  margin-top: 0.9rem;
  padding-top: 0.9rem;
  border-top: 1px dashed rgba(42, 55, 102, 0.75);
}

.page-about .version-body-inner p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.8;
  margin: 0 0 0.8rem;
}

.page-about .version-body-inner ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-about .version-body-inner li {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.page-about .version-body-inner li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-mint);
}

@media (min-width: 720px) {
  .page-about .version-track::before {
    content: "";
    position: absolute;
    left: 5rem;
    top: 0.5rem;
    bottom: 0.5rem;
    width: 1px;
    background: linear-gradient(180deg, var(--accent-violet), var(--accent-cyan), transparent);
    opacity: 0.6;
  }

  .page-about .version-step {
    grid-template-columns: 10rem 1fr;
    gap: 2.5rem;
    padding-block: 0.4rem;
  }

  .page-about .version-side {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
    padding-left: 0.15rem;
  }

  .page-about .version-step::before {
    content: "";
    position: absolute;
    left: 4.66rem;
    top: 1.05rem;
    width: 0.68rem;
    height: 0.68rem;
    border-radius: 50%;
    background: var(--accent-cyan);
    box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.16), 0 0 18px rgba(34, 211, 238, 0.5);
  }
}

/* ===== 团队 ===== */
.page-about .about-team {
  padding: clamp(3.5rem, 7vw, 6rem) 0;
  background: var(--ink-night);
}

.page-about .about-team-head {
  margin-bottom: clamp(2rem, 4vw, 2.75rem);
  max-width: 44rem;
}

.page-about .about-team-lede {
  color: var(--text-muted);
  line-height: 1.8;
  margin: 0;
}

.page-about .team-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-glow);
  border-top: 1px solid var(--line-glow);
  border-bottom: 1px solid var(--line-glow);
}

.page-about .team-role {
  background: var(--ink-night);
  padding: 1.4rem 1.2rem;
  position: relative;
}

.page-about .team-role-idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  color: var(--accent-violet);
  margin-bottom: 0.6rem;
}

.page-about .team-role-name {
  font-size: 1.12rem;
  margin-bottom: 0.45rem;
}

.page-about .team-role-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.75;
  margin: 0 0 0.9rem;
}

.page-about .team-role-details {
  border-top: 1px dashed rgba(42, 55, 102, 0.7);
  padding-top: 0.8rem;
}

.page-about .team-role-details summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
}

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

.page-about .team-role-details summary::after {
  content: "+";
  font-size: 0.9rem;
  line-height: 1;
}

.page-about .team-role-details[open] summary::after {
  content: "−";
}

.page-about .team-role-details ul {
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.page-about .team-role-details li {
  position: relative;
  padding-left: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.page-about .team-role-details li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-cyan);
}

@media (min-width: 720px) {
  .page-about .team-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about .team-role {
    padding: 1.75rem 1.6rem;
  }
}

@media (min-width: 1020px) {
  .page-about .team-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===== 覆盖与合作 ===== */
.page-about .about-coverage {
  position: relative;
  padding: clamp(3.5rem, 7vw, 6rem) 0;
  overflow: hidden;
  isolation: isolate;
  background: var(--ink-void);
}

.page-about .about-coverage-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-about .about-coverage-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.24;
  filter: saturate(0.6);
}

.page-about .about-coverage-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 7, 20, 0.9), rgba(11, 18, 48, 0.68));
}

.page-about .about-coverage-head {
  max-width: 46rem;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.page-about .about-coverage-lede {
  color: var(--text-muted);
  line-height: 1.8;
  margin: 0;
}

.page-about .coverage-tiles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .coverage-tile {
  position: relative;
  background: rgba(17, 28, 74, 0.55);
  border: 1px solid var(--line-glow);
  border-radius: var(--radius-card);
  padding: 1.4rem 1.2rem;
  backdrop-filter: blur(6px);
}

.page-about .coverage-tile::before {
  content: "";
  position: absolute;
  top: 1.4rem;
  right: 1.2rem;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-amber);
  box-shadow: 0 0 12px var(--accent-amber);
}

.page-about .coverage-num {
  display: block;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  line-height: 1;
  color: var(--accent-amber);
}

.page-about .coverage-label {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.page-about .coverage-tile p {
  color: var(--text-muted);
  font-size: 0.87rem;
  line-height: 1.7;
  margin: 0.8rem 0 0;
}

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

@media (min-width: 1000px) {
  .page-about .coverage-tiles {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
  }
}

/* ===== 荣誉与行动 ===== */
.page-about .about-honors {
  padding: clamp(3.5rem, 7vw, 6rem) 0 clamp(4rem, 8vw, 6rem);
  background: var(--ink-void);
}

.page-about .about-honors-grid {
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: start;
}

.page-about .about-honors-copy p {
  color: var(--text-muted);
  line-height: 1.8;
  margin: 1rem 0 0;
}

.page-about .about-honors-list {
  display: grid;
  gap: 1.1rem;
}

.page-about .honor-item {
  border-left: 2px solid var(--accent-violet);
  padding: 0.25rem 0 0.25rem 1.1rem;
}

.page-about .honor-item h3 {
  font-size: 1.02rem;
  margin-bottom: 0.35rem;
}

.page-about .honor-item p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.75;
  margin: 0;
}

.page-about .about-cta {
  margin-top: clamp(2rem, 4vw, 3.5rem);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  display: grid;
  gap: 1.25rem;
}

.page-about .about-cta-copy h2 {
  font-size: 1.35rem;
  margin-bottom: 0.45rem;
}

.page-about .about-cta-copy p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.75;
  margin: 0;
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

@media (min-width: 720px) {
  .page-about .about-cta {
    grid-template-columns: 1.5fr 1fr;
    align-items: center;
  }

  .page-about .about-cta-actions {
    justify-content: flex-end;
  }
}

@media (max-width: 599px) {
  .page-about .about-hero-aside {
    border-left: 0;
    border-top: 1px solid var(--line-glow);
    padding-left: 0;
    padding-top: 1.25rem;
  }

  .page-about .about-cta-actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }
}
<<<PAGE_CSS_END>>>