.page-about {
  --about-line: rgba(140, 244, 255, 0.16);
  --about-glow: rgba(255, 138, 61, 0.22);
  --about-pad: clamp(48px, 8vw, 104px);
}

/* ---------- 面包屑 ---------- */
.page-about .about-top {
  padding-top: clamp(18px, 3vw, 30px);
}
.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  color: var(--weak);
}
.page-about .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 8px;
  color: var(--weak);
}
.page-about .breadcrumb-link {
  color: var(--sub);
  text-decoration: none;
}
.page-about .breadcrumb-link:hover,
.page-about .breadcrumb-link:focus-visible {
  color: var(--cyan);
}

/* ---------- 首屏分屏 ---------- */
.page-about .about-hero {
  padding: clamp(28px, 5vw, 64px) 0 clamp(40px, 7vw, 88px);
}
.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}
.page-about .about-hero-title {
  font-family: var(--font-serif);
  font-size: clamp(30px, 6.4vw, 56px);
  line-height: 1.16;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 12px 0 0;
  color: var(--text);
}
.page-about .about-hero-lede {
  margin-top: 20px;
  color: var(--sub);
  font-size: 16px;
  line-height: 1.78;
  max-width: 46ch;
}
.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero-panel {
  position: relative;
  border-radius: var(--r-lg);
  padding: clamp(20px, 4vw, 34px);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(255, 90, 47, 0.16), transparent 58%),
    radial-gradient(90% 80% at 0% 100%, rgba(45, 226, 240, 0.14), transparent 62%),
    linear-gradient(160deg, var(--ink-2), var(--char));
  border: 1px solid var(--line-soft);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}
.page-about .about-hero-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(140, 244, 255, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(140, 244, 255, 0.07) 1px, transparent 1px);
  background-size: 46px 46px;
  opacity: 0.6;
  pointer-events: none;
}
.page-about .about-panel-head {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan-soft);
  text-transform: uppercase;
}
.page-about .about-panel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--flame);
  box-shadow: 0 0 0 4px rgba(255, 90, 47, 0.16);
}
.page-about .about-stats {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 14px;
  margin: 26px 0 0;
}
.page-about .about-stat dt {
  font-size: 12px;
  color: var(--sub);
  letter-spacing: 0.04em;
}
.page-about .about-stat dd {
  margin: 6px 0 0;
}
.page-about .about-stat-num {
  font-size: clamp(24px, 4.6vw, 34px);
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.02em;
}
.page-about .about-spark {
  position: relative;
  width: 100%;
  height: auto;
  margin-top: 20px;
  display: block;
}
.page-about .about-panel-note {
  position: relative;
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--sub);
}

/* ---------- 时间线 ---------- */
.page-about .about-track {
  padding: var(--about-pad) 0;
  border-top: 1px solid var(--line-cyan);
}
.page-about .about-track-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
}

.page-about .about-index {
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: rgba(13, 26, 43, 0.72);
  padding: 14px 16px;
}
.page-about .about-index-title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan-soft);
  text-transform: uppercase;
}
.page-about .about-index-list {
  display: flex;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}
.page-about .about-index-list li {
  flex: 0 0 auto;
  scroll-snap-align: start;
}
.page-about .about-index-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 13px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-soft);
  color: var(--sub);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.page-about .about-index-link .mono {
  font-size: 11px;
  color: var(--gold);
}
.page-about .about-index-link:hover,
.page-about .about-index-link:focus-visible {
  color: var(--text);
  border-color: var(--cyan);
  background: rgba(45, 226, 240, 0.1);
}

.page-about .about-track-head .section-title {
  font-family: var(--font-serif);
  font-size: clamp(24px, 4.4vw, 38px);
  line-height: 1.24;
  margin: 10px 0 0;
  color: var(--text);
}
.page-about .about-track-lede {
  margin: 16px 0 0;
  color: var(--sub);
  line-height: 1.78;
  max-width: 52ch;
}

.page-about .tl-list {
  position: relative;
  list-style: none;
  margin: clamp(28px, 5vw, 52px) 0 0;
  padding: 0;
}
.page-about .tl-list::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 10px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(45, 226, 240, 0.28) 55%, rgba(255, 138, 61, 0.42) 100%);
}
.page-about .tl-item {
  position: relative;
  padding-left: 44px;
  margin-bottom: clamp(26px, 4vw, 46px);
}
.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(45, 226, 240, 0.1);
}
.page-about .tl-item:last-child {
  margin-bottom: 0;
}
.page-about .tl-year {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--gold);
}
.page-about .tl-body {
  margin-top: 10px;
  padding: clamp(16px, 3vw, 24px);
  border-radius: var(--r-md);
  background: linear-gradient(155deg, rgba(21, 28, 38, 0.94), rgba(13, 26, 43, 0.94));
  border: 1px solid var(--line-soft);
}
.page-about .tl-title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: clamp(19px, 3.2vw, 24px);
  line-height: 1.35;
  font-weight: 600;
  color: var(--text);
}
.page-about .tl-body p {
  margin: 0;
  color: var(--sub);
  font-size: 15px;
  line-height: 1.78;
}
.page-about .about-figure {
  margin: 18px 0 0;
  border-radius: var(--r-sm);
  overflow: hidden;
}
.page-about .about-figure img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-about .about-fold {
  margin-top: 16px;
  border-top: 1px dashed var(--about-line);
  padding-top: 12px;
}
.page-about .about-fold summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--cyan);
  padding: 4px 0;
}
.page-about .about-fold summary::-webkit-details-marker {
  display: none;
}
.page-about .about-fold summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--ember);
}
.page-about .about-fold[open] summary::before {
  content: "−";
}
.page-about .about-fold summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}
.page-about .about-fold p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--sub);
}

.page-about .tl-item--band {
  padding-left: 0;
}
.page-about .tl-item--band::before {
  display: none;
}
.page-about .about-band {
  margin: 0;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line-cyan);
}
.page-about .about-band img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* ---------- 五个板块 ---------- */
.page-about .about-pillars {
  padding: var(--about-pad) 0;
  background:
    radial-gradient(80% 60% at 10% 0%, rgba(45, 226, 240, 0.09), transparent 60%),
    linear-gradient(180deg, var(--ink-2), var(--ink));
  border-top: 1px solid var(--line-cyan);
  border-bottom: 1px solid var(--line-cyan);
}
.page-about .about-block-head .section-title {
  font-family: var(--font-serif);
  font-size: clamp(24px, 4.4vw, 38px);
  line-height: 1.24;
  margin: 10px 0 0;
  color: var(--text);
}
.page-about .about-block-lede {
  margin: 14px 0 0;
  color: var(--sub);
  line-height: 1.78;
  max-width: 60ch;
}
.page-about .pillar-list {
  list-style: none;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}
.page-about .pillar-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: clamp(16px, 3vw, 22px);
  border-radius: var(--r-md);
  border: 1px solid var(--line-soft);
  background: rgba(21, 28, 38, 0.6);
  transition: border-color 0.24s var(--ease), transform 0.24s var(--ease);
}
.page-about .pillar-item:hover {
  border-color: rgba(45, 226, 240, 0.42);
  transform: translateY(-2px);
}
.page-about .pillar-idx {
  font-size: 15px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.06em;
  padding-top: 3px;
}
.page-about .pillar-title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.01em;
}
.page-about .pillar-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--sub);
}

/* ---------- 内容方法 ---------- */
.page-about .about-craft {
  padding: var(--about-pad) 0;
}
.page-about .about-craft-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}
.page-about .about-craft-copy .section-title {
  font-family: var(--font-serif);
  font-size: clamp(24px, 4.4vw, 36px);
  line-height: 1.26;
  margin: 10px 0 0;
  color: var(--text);
}
.page-about .about-craft-copy p {
  margin: 18px 0 0;
  color: var(--sub);
  line-height: 1.8;
  font-size: 15px;
}
.page-about .about-craft-copy .btn {
  margin-top: 24px;
}
.page-about .about-craft-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.page-about .about-craft-facts li {
  padding: 18px 16px;
  border-radius: var(--r-md);
  border: 1px solid var(--line-soft);
  background: linear-gradient(150deg, rgba(30, 42, 56, 0.7), rgba(13, 26, 43, 0.9));
}
.page-about .about-fact-num {
  display: block;
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.02em;
}
.page-about .about-fact-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--sub);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: var(--about-pad) 0;
  background:
    radial-gradient(70% 50% at 90% 0%, rgba(255, 90, 47, 0.12), transparent 60%),
    var(--ink-2);
  border-top: 1px solid var(--line-cyan);
}
.page-about .about-team-figure {
  margin: clamp(24px, 4vw, 40px) 0 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line-soft);
}
.page-about .about-team-figure img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}
.page-about .about-team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: clamp(20px, 4vw, 34px);
}
.page-about .team-cell {
  padding: 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--line-soft);
  background: rgba(6, 16, 29, 0.66);
  border-left: 3px solid rgba(45, 226, 240, 0.4);
}
.page-about .team-idx {
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.14em;
}
.page-about .team-title {
  margin: 8px 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
}
.page-about .team-cell p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--sub);
}

.page-about .about-cadence {
  margin-top: clamp(22px, 4vw, 34px);
  padding: clamp(18px, 3vw, 26px);
  border-radius: var(--r-md);
  border: 1px dashed rgba(232, 200, 122, 0.36);
  background: rgba(232, 200, 122, 0.05);
}
.page-about .about-cadence-title {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}
.page-about .cadence-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-about .cadence-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--sub);
}
.page-about .cadence-key {
  flex: 0 0 auto;
  padding: 3px 10px;
  border-radius: var(--r-pill);
  background: rgba(45, 226, 240, 0.12);
  color: var(--cyan-soft);
  font-size: 12px;
}

/* ---------- 生态 ---------- */
.page-about .about-eco {
  padding: var(--about-pad) 0;
}
.page-about .eco-quad {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: clamp(26px, 4vw, 40px);
}
.page-about .eco-cell {
  position: relative;
  padding: clamp(18px, 3vw, 26px);
  border-radius: var(--r-md);
  border: 1px solid var(--line-soft);
  background: rgba(21, 28, 38, 0.66);
  overflow: hidden;
}
.page-about .eco-cell::after {
  content: "";
  position: absolute;
  inset: auto -30% -60% auto;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  opacity: 0.5;
  pointer-events: none;
}
.page-about .eco-cell--data::after {
  background: radial-gradient(circle, rgba(45, 226, 240, 0.3), transparent 70%);
}
.page-about .eco-cell--check::after {
  background: radial-gradient(circle, rgba(232, 200, 122, 0.3), transparent 70%);
}
.page-about .eco-cell--dist::after {
  background: radial-gradient(circle, rgba(255, 90, 47, 0.28), transparent 70%);
}
.page-about .eco-cell--term::after {
  background: radial-gradient(circle, rgba(140, 244, 255, 0.26), transparent 70%);
}
.page-about .eco-tag {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--weak);
  text-transform: uppercase;
}
.page-about .eco-title {
  margin: 10px 0 8px;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
}
.page-about .eco-cell p {
  position: relative;
  margin: 0;
  font-size: 14px;
  line-height: 1.74;
  color: var(--sub);
}
.page-about .about-honor {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 22px;
  padding: 18px 20px;
  border-radius: var(--r-md);
  border: 1px solid rgba(232, 200, 122, 0.34);
  background: linear-gradient(110deg, rgba(232, 200, 122, 0.1), transparent 70%);
}
.page-about .about-honor-year {
  font-size: clamp(20px, 3.6vw, 26px);
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.04em;
}
.page-about .about-honor p {
  margin: 0;
  flex: 1 1 240px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--sub);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  padding: var(--about-pad) 0;
  background:
    radial-gradient(90% 120% at 0% 0%, rgba(255, 90, 47, 0.16), transparent 62%),
    linear-gradient(160deg, var(--char), var(--ink));
  border-top: 1px solid var(--line-cyan);
}
.page-about .about-cta-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  align-items: center;
}
.page-about .about-cta-copy .section-title {
  font-family: var(--font-serif);
  font-size: clamp(24px, 4.4vw, 36px);
  line-height: 1.26;
  margin: 10px 0 0;
  color: var(--text);
}
.page-about .about-cta-copy p {
  margin: 14px 0 0;
  color: var(--sub);
  line-height: 1.78;
  font-size: 15px;
  max-width: 54ch;
}
.page-about .about-cta-actions {
  display: grid;
  gap: 12px;
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .pillar-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .eco-quad {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-cta-actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .cadence-list li {
    flex-wrap: nowrap;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: clamp(36px, 5vw, 72px);
    align-items: start;
  }
  .page-about .about-hero-panel {
    margin-top: 6px;
  }
  .page-about .about-craft-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }
  .page-about .about-craft-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-self: start;
  }
  .page-about .about-cta-inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 48px;
  }
  .page-about .about-cta-actions {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (min-width: 1080px) {
  .page-about .about-track-grid {
    grid-template-columns: minmax(0, 1fr) 236px;
    gap: clamp(32px, 5vw, 68px);
    align-items: start;
  }
  .page-about .about-index {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: 96px;
    padding: 18px;
  }
  .page-about .about-index-list {
    display: block;
    overflow: visible;
    padding: 0;
  }
  .page-about .about-index-list li + li {
    margin-top: 6px;
  }
  .page-about .about-index-link {
    width: 100%;
    justify-content: flex-start;
    border-color: transparent;
    background: transparent;
  }
  .page-about .about-index-link:hover,
  .page-about .about-index-link:focus-visible {
    border-color: var(--line-soft);
  }
  .page-about .about-timeline {
    grid-column: 1;
    grid-row: 1;
  }
  .page-about .tl-item:nth-child(even) {
    padding-left: 72px;
  }
  .page-about .tl-item--band {
    padding-left: 24px;
  }
  .page-about .pillar-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-team-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1320px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .pillar-item,
  .page-about .btn,
  .page-about .about-index-link {
    transition: none;
  }
  .page-about .pillar-item:hover {
    transform: none;
  }
}
<<<END>>>