.page-about {
  --about-rail: 12.5rem;
  --about-gap: 2rem;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 2rem 0 3rem;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(62% 92% at 90% 4%, rgba(34, 211, 238, 0.14), transparent 68%),
    radial-gradient(54% 84% at 2% 0%, rgba(255, 176, 32, 0.12), transparent 70%);
}

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

.page-about .about-hero-copy {
  min-width: 0;
}

.page-about .about-hero .crumbs {
  margin-bottom: 1.4rem;
}

.page-about .about-hero h1 {
  margin: 0.8rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 6.2vw, 3.8rem);
  line-height: 1.14;
  letter-spacing: 0.02em;
  color: var(--mint);
}

.page-about .about-hero .lede {
  margin: 1.1rem 0 0;
  max-width: 34em;
  color: var(--mist);
  line-height: 1.85;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.7rem;
}

.page-about .hero-panel {
  min-width: 0;
  padding: 1.3rem 1.2rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(158deg, rgba(34, 211, 238, 0.10), rgba(232, 240, 255, 0.04) 58%);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.page-about .hero-panel-title {
  margin: 0 0 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-about .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.95rem 1rem;
}

.page-about .hero-stat {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding-top: 0.7rem;
  border-top: 1px solid var(--line);
}

.page-about .hero-stat-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--gold);
}

.page-about .hero-stat:nth-child(2) .hero-stat-num,
.page-about .hero-stat:nth-child(4) .hero-stat-num {
  color: var(--cyan);
}

.page-about .hero-stat-label {
  font-size: 0.8rem;
  color: var(--mist);
  line-height: 1.5;
}

/* ---------- 布局与侧栏 ---------- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.6rem;
  padding-block: 2rem 4rem;
}

.page-about .about-rail {
  min-width: 0;
  border-left: 2px solid var(--ink-700);
  padding-left: 1rem;
}

.page-about .rail-title {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--mist);
}

.page-about .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.15rem;
}

.page-about .rail-link {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.5rem 0.55rem;
  border-left: 2px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--mist);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .rail-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--gold);
}

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

.page-about .rail-link:hover,
.page-about .rail-link:focus-visible {
  color: var(--mint);
  background: rgba(34, 211, 238, 0.08);
  border-left-color: var(--cyan);
}

.page-about .rail-link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-about .rail-foot {
  margin: 1.2rem 0 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.9;
  color: var(--mist);
  word-break: break-all;
}

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

/* ---------- 章节 ---------- */
.page-about .chapter {
  padding: 2rem 0 2.2rem;
  border-top: 1px solid var(--line);
  scroll-margin-top: 5.5rem;
}

.page-about .chapter:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .chapter-head {
  display: grid;
  gap: 0.55rem;
  margin-bottom: 1.3rem;
}

.page-about .chapter-num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-about .chapter h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.6vw, 2.1rem);
  line-height: 1.28;
  letter-spacing: 0.03em;
  color: var(--mint);
}

.page-about .chapter p {
  margin: 0 0 1rem;
  max-width: 34em;
  color: var(--mint);
  line-height: 1.85;
}

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

.page-about .chapter-lede {
  color: var(--mist);
}

.page-about .chapter-promise {
  margin-top: 1.4rem;
  padding-left: 1rem;
  border-left: 2px solid var(--gold);
  color: var(--mist);
}

.page-about .split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.2rem;
}

.page-about .chapter-main {
  min-width: 0;
}

.page-about .chapter-aside {
  min-width: 0;
}

.page-about .aside-note {
  margin: 0;
  padding: 0.2rem 0 0.2rem 0.95rem;
  border-left: 2px solid rgba(255, 176, 32, 0.75);
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 索引清单 ---------- */
.page-about .stat-index {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.15rem;
}

.page-about .stat-index li {
  display: grid;
  grid-template-columns: 3.2rem minmax(0, 1fr);
  grid-template-areas:
    "num label"
    "rule label";
  align-items: baseline;
  gap: 0.15rem 0.9rem;
  padding: 0.8rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-about .stat-index li:hover,
.page-about .stat-index li:focus-within {
  border-color: rgba(34, 211, 238, 0.45);
  background: rgba(34, 211, 238, 0.06);
}

.page-about .stat-num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.page-about .stat-rule {
  grid-area: rule;
  display: block;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 176, 32, 0.7), rgba(34, 211, 238, 0.15));
}

.page-about .stat-label {
  grid-area: label;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--mint);
}

/* ---------- 时间轴 ---------- */
.page-about .timeline {
  position: relative;
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 0.42rem;
  top: 0.6rem;
  bottom: 0.9rem;
  width: 1px;
  background: linear-gradient(180deg, rgba(255, 176, 32, 0.9), rgba(34, 211, 238, 0.7) 58%, rgba(34, 211, 238, 0.06));
}

.page-about .tl {
  position: relative;
  padding: 0 0 1.4rem 2rem;
}

.page-about .tl:last-child {
  padding-bottom: 0;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.4rem;
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 50%;
  background: var(--ink-900);
  border: 1px solid rgba(255, 176, 32, 0.85);
  transition: background 0.24s var(--ease), box-shadow 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-about .tl:hover::before,
.page-about .tl:focus-within::before {
  background: var(--gold);
  border-color: var(--gold);
  box-shadow: 0 0 0 6px rgba(255, 176, 32, 0.14);
}

.page-about .tl-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
}

.page-about .tl-ver {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  color: var(--cyan);
  transition: color 0.24s var(--ease);
}

.page-about .tl:hover .tl-ver,
.page-about .tl:focus-within .tl-ver {
  color: var(--gold);
}

.page-about .tl-name {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--mint);
}

.page-about .tl-desc {
  margin: 0.4rem 0 0;
  max-width: 34em;
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 团队网格 ---------- */
.page-about .team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.85rem;
  margin-top: 1.5rem;
}

.page-about .team-node {
  min-width: 0;
  padding: 1rem 1.05rem 1.05rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(165deg, rgba(232, 240, 255, 0.055), rgba(232, 240, 255, 0.015));
  transition: border-color 0.24s var(--ease), background 0.24s var(--ease), transform 0.2s var(--ease);
}

.page-about .team-node:hover,
.page-about .team-node:focus {
  border-color: rgba(34, 211, 238, 0.62);
  background: rgba(34, 211, 238, 0.07);
  transform: translateY(-1px);
}

.page-about .team-node:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-about .team-mark {
  display: block;
  width: 1.55rem;
  height: 0.28rem;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--gold), var(--cyan));
}

.page-about .team-name {
  margin: 0.8rem 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--mint);
}

.page-about .team-duty {
  margin: 0;
  max-width: none;
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-about .team-tag {
  display: inline-block;
  margin-top: 0.75rem;
  padding: 0.15rem 0.6rem;
  border: 1px solid rgba(255, 176, 32, 0.42);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--gold);
  opacity: 0.72;
  transition: opacity 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-about .team-node:hover .team-tag,
.page-about .team-node:focus .team-tag {
  opacity: 1;
  border-color: var(--gold);
}

/* ---------- 流程步骤 ---------- */
.page-about .flow {
  list-style: none;
  counter-reset: flow;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.85rem;
}

.page-about .flow-step {
  counter-increment: flow;
  position: relative;
  min-width: 0;
  padding: 1rem 1rem 1rem 2.7rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(17, 26, 62, 0.62);
  transition: border-color 0.24s var(--ease);
}

.page-about .flow-step:hover {
  border-color: rgba(255, 176, 32, 0.5);
}

.page-about .flow-step::before {
  content: counter(flow, decimal-leading-zero);
  position: absolute;
  left: 0.95rem;
  top: 1.05rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .flow-name {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.02em;
  color: var(--mint);
}

.page-about .flow-desc {
  margin: 0;
  max-width: none;
  font-size: 0.9rem;
  line-height: 1.74;
  color: var(--mist);
}

/* ---------- 行业交流 ---------- */
.page-about .award-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.8rem;
  margin-top: 1.4rem;
}

.page-about .award {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(150deg, rgba(34, 211, 238, 0.07), rgba(232, 240, 255, 0.02));
  transition: border-color 0.24s var(--ease);
}

.page-about .award:hover {
  border-color: rgba(34, 211, 238, 0.5);
}

.page-about .award summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem 0.75rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
}

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

.page-about .award summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--cyan);
}

.page-about .award[open] summary::after {
  content: "–";
  color: var(--gold);
}

.page-about .award summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-about .award-year {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-about .award-title {
  font-family: var(--font-display);
  font-size: 0.98rem;
  letter-spacing: 0.02em;
  color: var(--mint);
}

.page-about .award-body {
  margin: 0;
  padding: 0 1.1rem 1.1rem;
  max-width: 34em;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 配图 ---------- */
.page-about .about-figure {
  margin: 1.6rem 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-about .about-figure--ring img {
  max-width: 26rem;
  margin-inline: auto;
}

.page-about .about-figure figcaption {
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 收束 ---------- */
.page-about .about-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.2rem;
  margin-top: 2.5rem;
  padding: 1.5rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(80% 130% at 100% 0%, rgba(255, 176, 32, 0.16), transparent 62%),
    rgba(17, 26, 62, 0.78);
}

.page-about .about-cta h2 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  letter-spacing: 0.03em;
  color: var(--mint);
}

.page-about .about-cta p {
  margin: 0;
  max-width: 34em;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-cta p a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 176, 32, 0.6);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-cta p a:hover,
.page-about .about-cta p a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
}

/* ---------- 媒体查询 ---------- */
@media (min-width: 560px) {
  .page-about .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .award-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-about .about-hero {
    padding: 2.6rem 0 3.6rem;
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 1.8rem 1.7rem;
  }

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

@media (min-width: 920px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 3rem;
  }

  .page-about .hero-panel {
    padding: 1.5rem 1.35rem 1.35rem;
  }

  .page-about .split {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 2.2rem;
    align-items: start;
  }

  .page-about .chapter {
    padding: 2.4rem 0 2.6rem;
  }
}

@media (min-width: 1000px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 3.2rem;
    padding-block: 2.6rem 5rem;
  }

  .page-about .about-rail {
    position: sticky;
    top: 6rem;
    align-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .rail-link,
  .page-about .stat-index li,
  .page-about .tl::before,
  .page-about .tl-ver,
  .page-about .team-node,
  .page-about .team-tag,
  .page-about .flow-step,
  .page-about .award,
  .page-about .about-cta p a {
    transition: none;
  }

  .page-about .team-node:hover,
  .page-about .team-node:focus {
    transform: none;
  }
}
<<<END>>>