.page-about {
  --about-line: rgba(242, 239, 228, 0.16);
  --about-line-soft: rgba(242, 239, 228, 0.08);
  --about-paper: rgba(23, 53, 44, 0.72);
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(28px, 5vw, 56px) 0 clamp(24px, 4vw, 40px);
}

.page-about .hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-about .hero-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .hero-main h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.1rem, 5.4vw, 4.2rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--cream);
  max-width: 16em;
}

.page-about .hero-lead {
  margin: 0 0 24px;
  max-width: 40em;
  font-size: clamp(1rem, 1.3vw, 1.06rem);
  line-height: 1.85;
  color: var(--cool);
}

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

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

.page-about .hero-version {
  padding: 20px 22px 22px;
  border: 1px solid var(--about-line);
  border-radius: 4px 18px 4px 4px;
  background:
    linear-gradient(150deg, rgba(53, 240, 208, 0.09), transparent 62%),
    var(--about-paper);
  box-shadow: var(--shadow-paper);
}

.page-about .version-big {
  margin: 12px 0 6px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2.6rem, 7vw, 3.6rem);
  line-height: 1;
  color: var(--amber);
  letter-spacing: 0.02em;
}

.page-about .version-note {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--cool);
}

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

.page-about .hero-facts li {
  padding: 14px 14px 16px;
  background: var(--ink);
  display: grid;
  gap: 6px;
  align-content: start;
}

.page-about .fact-num {
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 3vw, 1.65rem);
  font-weight: 700;
  line-height: 1;
  color: var(--cream);
}

.page-about .fact-label {
  font-size: 0.78rem;
  line-height: 1.6;
  color: rgba(221, 231, 227, 0.72);
}

/* ---------- 章节索引 ---------- */
.page-about .anchor-nav {
  margin: clamp(8px, 2vw, 18px) 0 clamp(20px, 3vw, 32px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding: 12px 0;
  border-top: 1px solid var(--about-line-soft);
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .anchor-nav-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--clay);
}

.page-about .anchor-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .anchor-link {
  display: inline-block;
  padding: 5px 12px;
  border: 1px solid var(--about-line);
  border-radius: var(--pill);
  font-size: 0.82rem;
  color: var(--cool);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

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

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 0 0 clamp(32px, 5vw, 64px);
}

.page-about .figure-media {
  overflow: hidden;
  border: 1px solid var(--about-line);
  border-radius: 3px 16px 3px 3px;
  background: var(--moss);
}

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

.page-about .figure-caption {
  margin-top: 10px;
  font-size: 0.8rem;
  line-height: 1.7;
  color: rgba(221, 231, 227, 0.66);
}

/* ---------- 通用区块 ---------- */
.page-about .section {
  padding: clamp(36px, 6vw, 72px) 0;
  border-top: 1px solid var(--about-line-soft);
}

.page-about .section-head {
  max-width: 46em;
  margin-bottom: clamp(24px, 3.5vw, 40px);
}

.page-about .section-title {
  margin: 12px 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.55rem, 3.6vw, 2.5rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-about .section-sub {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--cool);
}

.page-about .mini-title {
  margin: 0 0 10px;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--cream);
}

/* ---------- 起点 ---------- */
.page-about .origin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 36px);
}

.page-about .origin-body p {
  margin: 0 0 16px;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--cool);
}

.page-about .origin-body p:last-child {
  margin-bottom: 0;
}

/* ---------- 时间轴 ---------- */
.page-about .timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 4px 0 0;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 12px;
  left: 5px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(53, 240, 208, 0.25) 62%, var(--track));
}

.page-about .tl-item {
  position: relative;
  padding-left: 28px;
  margin-bottom: clamp(24px, 3.5vw, 38px);
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(11, 31, 26, 0.9);
}

.page-about .tl-item--current::before {
  background: var(--track);
  border-color: var(--amber);
  box-shadow: 0 0 0 4px rgba(11, 31, 26, 0.9), 0 0 18px rgba(255, 122, 61, 0.55);
}

.page-about .tl-year {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 8px;
}

.page-about .tl-ver {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  line-height: 1;
  color: var(--cream);
  letter-spacing: 0.02em;
}

.page-about .tl-item--current .tl-ver {
  color: var(--amber);
}

.page-about .tl-note {
  font-size: 11px;
  letter-spacing: 0.26em;
  color: rgba(221, 231, 227, 0.6);
}

.page-about .tl-body {
  padding: 18px 18px 20px;
  border: 1px solid var(--about-line-soft);
  border-left: 2px solid var(--about-line);
  border-radius: 3px 14px 3px 3px;
  background: linear-gradient(170deg, rgba(23, 53, 44, 0.8), rgba(11, 31, 26, 0.4));
}

.page-about .tl-item--current .tl-body {
  border-left-color: var(--track);
  background: linear-gradient(170deg, rgba(255, 122, 61, 0.1), rgba(11, 31, 26, 0.55) 55%);
}

.page-about .tl-title {
  margin: 0 0 10px;
  font-size: clamp(1.05rem, 2vw, 1.22rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--cream);
}

.page-about .tl-text {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--cool);
}

.page-about .tl-more {
  margin-top: 14px;
  border-top: 1px dashed var(--about-line);
  padding-top: 10px;
}

.page-about .tl-more summary {
  cursor: pointer;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

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

.page-about .tl-more summary::before {
  content: "+";
  display: inline-grid;
  place-items: center;
  width: 16px;
  height: 16px;
  border: 1px solid var(--cyan);
  border-radius: 2px;
  font-size: 12px;
  line-height: 1;
}

.page-about .tl-more[open] summary::before {
  content: "–";
}

.page-about .tl-points {
  margin: 12px 0 0;
  padding: 0 0 0 16px;
  display: grid;
  gap: 8px;
}

.page-about .tl-points li {
  font-size: 0.9rem;
  line-height: 1.75;
  color: rgba(221, 231, 227, 0.86);
}

.page-about .tl-points li::marker {
  color: var(--clay);
}

/* ---------- 数据墙 ---------- */
.page-about .data-wall {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-line-soft);
  border: 1px solid var(--about-line-soft);
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-about .data-cell {
  padding: 18px 16px 20px;
  background: var(--moss);
  display: grid;
  gap: 6px;
  align-content: start;
}

.page-about .data-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  line-height: 1;
  color: var(--amber);
}

.page-about .data-label {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--cream);
}

.page-about .data-desc {
  font-size: 0.78rem;
  line-height: 1.65;
  color: rgba(221, 231, 227, 0.68);
}

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

.page-about .data-note {
  padding-left: 14px;
  border-left: 1px solid var(--about-line);
}

.page-about .data-note p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--cool);
}

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

/* ---------- 团队 ---------- */
.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .team-card {
  position: relative;
  padding: 20px 18px 22px;
  border: 1px solid var(--about-line-soft);
  border-radius: 3px 14px 3px 3px;
  background: rgba(23, 53, 44, 0.55);
}

.page-about .team-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--clay);
}

.page-about .team-role {
  margin: 8px 0 10px;
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--cream);
}

.page-about .team-card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.82;
  color: var(--cool);
}

/* ---------- 行业认可 ---------- */
.page-about .awards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.5vw, 40px);
  align-items: start;
}

.page-about .award-text {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.9;
  color: var(--cool);
}

.page-about .award-list {
  display: grid;
  gap: 1px;
  background: var(--about-line-soft);
  border: 1px solid var(--about-line-soft);
}

.page-about .award-row {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  background: var(--ink);
}

.page-about .award-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-about .award-value {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--cool);
}

.page-about .award-value a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 208, 0.45);
}

.page-about .award-value a:hover,
.page-about .award-value a:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* ---------- 下一阶段 ---------- */
.page-about .next-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-about .next-copy p {
  margin: 0 0 16px;
  font-size: 0.98rem;
  line-height: 1.9;
  color: var(--cool);
}

.page-about .next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

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

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-about .hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 4vw, 56px);
  }

  .page-about .origin-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: clamp(24px, 4vw, 56px);
  }

  .page-about .data-wall {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .data-detail-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 4fr);
  }

  .page-about .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

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

  .page-about .award-row {
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }

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

@media (min-width: 990px) {
  .page-about .timeline::before {
    left: 108px;
  }

  .page-about .tl-item {
    display: grid;
    grid-template-columns: 108px minmax(0, 1fr);
    padding-left: 0;
    margin-bottom: clamp(28px, 3vw, 44px);
  }

  .page-about .tl-item::before {
    left: 108px;
    transform: translateX(-50%);
    top: 12px;
  }

  .page-about .tl-year {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding-right: 26px;
    margin-bottom: 0;
  }

  .page-about .tl-note {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    letter-spacing: 0.3em;
    line-height: 1;
  }

  .page-about .tl-body {
    padding: 22px 26px 24px;
  }

  .page-about .team-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .anchor-link {
    transition: none;
  }
}
<<<END>>>