.page-about {
  --about-gap: 56px;
}

.page-about .about-hero {
  display: grid;
  gap: 32px;
  padding: 40px 0 48px;
}

.page-about .about-hero-copy {
  max-width: 640px;
}

.page-about h1 {
  margin: 14px 0 18px;
  font-size: clamp(34px, 6vw, 60px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .about-lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 20px;
  margin: 28px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
}

.page-about .about-stats .stat {
  min-width: 0;
}

.page-about .about-stats dt {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-bottom: 6px;
}

.page-about .about-stats dd {
  margin: 0;
  font-size: 18px;
  color: var(--text);
}

.page-about .about-stats dd .num {
  color: var(--mint);
  font-size: 22px;
}

.page-about .about-hero-visual {
  position: relative;
  width: min(320px, 78vw);
  aspect-ratio: 1;
  margin: 8px auto 0;
  display: grid;
  place-items: center;
}

.page-about .hv-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(
    from 210deg,
    var(--blue) 0 25%,
    var(--mint) 25% 50%,
    var(--orange) 50% 75%,
    var(--red) 75% 100%
  );
  -webkit-mask: radial-gradient(circle, transparent 64%, #000 65%);
  mask: radial-gradient(circle, transparent 64%, #000 65%);
  opacity: 0.85;
  animation: about-spin 26s linear infinite;
}

.page-about .hv-ring--inner {
  inset: 16%;
  opacity: 0.35;
  animation-direction: reverse;
  animation-duration: 34s;
}

@keyframes about-spin {
  to { transform: rotate(360deg); }
}

.page-about .hv-core {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 4px;
  text-align: center;
  padding: 22px 30px;
  border-radius: var(--r-lg);
  background: rgba(11, 42, 31, 0.82);
  border: 1px solid var(--line);
}

.page-about .hv-num {
  font-size: 44px;
  color: var(--white);
  letter-spacing: 0.02em;
}

.page-about .hv-cap {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--mint);
}

.page-about .hv-dot {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 12px rgba(255, 122, 24, 0.8);
  animation: about-pulse 2.4s ease-in-out infinite;
}

.page-about .hv-dot--a { top: 6%; left: 26%; }
.page-about .hv-dot--b { bottom: 14%; right: 12%; animation-delay: 0.6s; background: var(--mint); box-shadow: 0 0 12px rgba(125, 255, 176, 0.8); }
.page-about .hv-dot--c { top: 44%; right: 2%; animation-delay: 1.2s; background: var(--blue); box-shadow: 0 0 12px rgba(46, 123, 255, 0.8); }

@keyframes about-pulse {
  0%, 100% { transform: scale(0.85); opacity: 0.65; }
  50% { transform: scale(1.15); opacity: 1; }
}

.page-about .section-head {
  max-width: 720px;
  margin-bottom: 28px;
}

.page-about .section-head h2 {
  margin: 12px 0 14px;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .section-lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-origin,
.page-about .about-team,
.page-about .about-coverage,
.page-about .about-quality,
.page-about .about-partners,
.page-about .about-awards,
.page-about .about-next {
  padding: var(--about-gap) 0;
}

.page-about .about-origin {
  display: grid;
  gap: 28px;
}

.page-about .origin-copy h2 {
  margin: 12px 0 16px;
  font-size: clamp(24px, 4vw, 36px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .origin-copy p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}

.page-about .origin-points {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-about .origin-points li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
}

.page-about .origin-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 10px;
  height: 2px;
  background: var(--blue);
  border-radius: 2px;
}

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

.page-about .media-frame {
  overflow: hidden;
  border-radius: var(--r-lg);
  background: var(--panel);
  border: 1px solid var(--line);
}

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

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

.page-about .v-timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--blue), var(--mint) 42%, var(--orange) 74%, var(--red));
  opacity: 0.5;
}

.page-about .v-item {
  position: relative;
  padding: 0 0 34px 44px;
}

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

.page-about .v-node {
  position: absolute;
  left: 3px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--mint);
  box-shadow: 0 0 0 5px rgba(125, 255, 176, 0.1);
}

.page-about .v-item--current .v-node {
  border-color: var(--orange);
  box-shadow: 0 0 0 5px rgba(255, 122, 24, 0.14);
  animation: about-pulse 2.4s ease-in-out infinite;
}

.page-about .v-body {
  padding: 20px 22px;
  border-radius: var(--r-md);
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue);
}

.page-about .v-item--current .v-body {
  border-left-color: var(--orange);
  background: linear-gradient(135deg, rgba(11, 42, 31, 0.95), rgba(10, 43, 69, 0.95));
}

.page-about .v-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.page-about .v-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 15px;
  color: var(--white);
  background: rgba(46, 123, 255, 0.18);
  border: 1px solid rgba(46, 123, 255, 0.5);
}

.page-about .v-item--current .v-tag {
  background: rgba(255, 122, 24, 0.18);
  border-color: rgba(255, 122, 24, 0.55);
}

.page-about .v-era {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-about .v-body h3 {
  margin: 0 0 10px;
  font-size: 19px;
  line-height: 1.4;
  color: var(--white);
}

.page-about .v-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
}

.page-about .v-caps {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .v-caps li {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mint);
  background: rgba(125, 255, 176, 0.08);
  border: 1px solid rgba(125, 255, 176, 0.28);
}

/* 团队 */
.page-about .team-layout {
  display: grid;
  gap: 24px;
}

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

.page-about .team-roles {
  display: grid;
  gap: 16px;
}

.page-about .team-donut-wrap {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  border-radius: var(--r-md);
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-about .team-donut {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  flex: none;
  background: conic-gradient(
    var(--blue) 0 42.86%,
    var(--mint) 42.86% 75%,
    var(--orange) 75% 100%
  );
  -webkit-mask: radial-gradient(circle, transparent 56%, #000 57%);
  mask: radial-gradient(circle, transparent 56%, #000 57%);
}

.page-about .donut-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .role {
  position: relative;
  padding: 18px 20px 18px 22px;
  border-radius: var(--r-md);
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-about .role::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 3px;
  border-radius: 3px;
}

.page-about .role--a::before { background: var(--blue); }
.page-about .role--b::before { background: var(--mint); }
.page-about .role--c::before { background: var(--orange); }

.page-about .role-num {
  display: block;
  font-size: 26px;
  color: var(--white);
  margin-bottom: 6px;
}

.page-about .role h3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--white);
}

.page-about .role p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* 覆盖版图 */
.page-about .coverage-layout {
  display: grid;
  gap: 24px;
}

.page-about .coverage-legend {
  padding: 22px;
  border-radius: var(--r-lg);
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-about .legend-title {
  margin: 0 0 16px;
  font-size: 14px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-about .legend-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .legend-item {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  color: var(--text);
  min-width: 0;
}

.page-about .lg-dot {
  width: 9px;
  height: 9px;
  border-radius: 2px;
  flex: none;
}

.page-about .lg-dot--1 { background: var(--blue); }
.page-about .lg-dot--2 { background: var(--orange); }
.page-about .lg-dot--3 { background: var(--mint); }
.page-about .lg-dot--4 { background: var(--red); }
.page-about .lg-dot--5 { background: #4a9bff; }
.page-about .lg-dot--6 { background: #ffb066; }
.page-about .lg-dot--7 { background: #3fd6a0; }
.page-about .lg-dot--8 { background: #ff6b74; }
.page-about .lg-dot--9 { background: #7aa7ff; }
.page-about .lg-dot--10 { background: #59d3d3; }
.page-about .lg-dot--11 { background: #b8e4ff; }
.page-about .lg-dot--12 { background: #ff9a5b; }

.page-about .coverage-notes {
  display: grid;
  gap: 18px;
}

.page-about .cnote {
  padding: 20px;
  border-radius: var(--r-md);
  background: var(--blue-deep);
  border: 1px solid var(--line);
}

.page-about .cnote h3 {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--white);
}

.page-about .cnote p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

.page-about .coverage-figure {
  margin: 24px 0 0;
}

/* 流程 */
.page-about .flow-steps {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-about .flow-step {
  position: relative;
  padding: 20px 20px 20px 64px;
  border-radius: var(--r-md);
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-about .step-idx {
  position: absolute;
  left: 20px;
  top: 20px;
  font-size: 20px;
  color: var(--mint);
  letter-spacing: 0.04em;
}

.page-about .flow-step h3 {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--white);
}

.page-about .flow-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .quality-meter {
  display: grid;
  gap: 20px;
  margin-top: 28px;
  padding: 26px 22px;
  border-radius: var(--r-lg);
  background: linear-gradient(135deg, rgba(10, 43, 69, 0.9), rgba(5, 23, 15, 0.9));
  border: 1px solid var(--line);
}

.page-about .qm-figure {
  display: grid;
  gap: 8px;
}

.page-about .qm-num {
  font-size: clamp(30px, 6vw, 46px);
  color: var(--orange);
  letter-spacing: -0.01em;
}

.page-about .qm-cap {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .qm-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

/* 合作伙伴 */
.page-about .partner-grid {
  display: grid;
  gap: 16px;
}

.page-about .partner-card {
  position: relative;
  padding: 22px 20px;
  border-radius: var(--r-md);
  background: var(--panel);
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-about .partner-card::after {
  content: "";
  position: absolute;
  right: -30px;
  bottom: -30px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  opacity: 0.12;
}

.page-about .partner-card--source::after { background: var(--blue); }
.page-about .partner-card--assoc::after { background: var(--mint); }
.page-about .partner-card--club::after { background: var(--orange); }

.page-about .partner-card h3 {
  margin: 0 0 10px;
  font-size: 17px;
  color: var(--white);
}

.page-about .partner-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

/* 荣誉 */
.page-about .award-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .award-item {
  display: grid;
  gap: 10px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.25s var(--ease);
}

.page-about .award-item:hover {
  background-color: rgba(11, 42, 31, 0.6);
}

.page-about .award-year {
  font-size: 22px;
  color: var(--mint);
  letter-spacing: 0.02em;
}

.page-about .award-body h3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--white);
}

.page-about .award-body > p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text);
}

.page-about .award-more {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  margin-top: 0;
  color: var(--muted) !important;
  transition: max-height 0.35s var(--ease), opacity 0.35s var(--ease), margin-top 0.35s var(--ease);
}

.page-about .award-item:hover .award-more,
.page-about .award-item:focus-within .award-more {
  max-height: 160px;
  opacity: 1;
  margin-top: 10px;
}

/* 未来 */
.page-about .next-card {
  display: grid;
  gap: 26px;
  padding: 28px 24px;
  border-radius: var(--r-lg);
  background: linear-gradient(140deg, rgba(11, 42, 31, 0.96), rgba(10, 43, 69, 0.96));
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}

.page-about .next-card::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -60px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 122, 24, 0.18), transparent 70%);
}

.page-about .next-copy {
  position: relative;
  z-index: 1;
}

.page-about .next-copy h2 {
  margin: 12px 0 14px;
  font-size: clamp(22px, 4vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .next-copy p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

.page-about .next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-about .next-visual {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  gap: 10px;
  height: 120px;
  padding: 0 4px;
}

.page-about .nv-bar {
  flex: 1;
  border-radius: 6px 6px 2px 2px;
  background: linear-gradient(180deg, var(--mint), rgba(125, 255, 176, 0.15));
}

.page-about .nv-bar--1 { height: 34%; }
.page-about .nv-bar--2 { height: 52%; background: linear-gradient(180deg, var(--blue), rgba(46, 123, 255, 0.15)); }
.page-about .nv-bar--3 { height: 44%; }
.page-about .nv-bar--4 { height: 70%; background: linear-gradient(180deg, var(--orange), rgba(255, 122, 24, 0.15)); }
.page-about .nv-bar--5 { height: 88%; }

.page-about .about-other-links {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-about .about-other-links p {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-about .about-other-links ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-about .about-other-links a {
  display: inline-block;
  font-size: 15px;
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 123, 255, 0.35);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-other-links a:hover,
.page-about .about-other-links a:focus-visible {
  color: var(--mint);
  border-bottom-color: rgba(125, 255, 176, 0.5);
}

@media (min-width: 768px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-origin {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 40px;
  }

  .page-about .about-origin .origin-copy {
    order: 1;
  }

  .page-about .about-origin .origin-figure {
    order: 2;
    position: sticky;
    top: calc(var(--hdr-h) + 24px);
  }

  .page-about .team-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 32px;
  }

  .page-about .coverage-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 32px;
  }

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

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

  .page-about .flow-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .quality-meter {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: center;
    gap: 32px;
    padding: 32px 28px;
  }

  .page-about .partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .award-item {
    grid-template-columns: 140px minmax(0, 1fr);
    align-items: start;
    gap: 20px;
    padding: 26px 12px;
  }

  .page-about .next-card {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: center;
    gap: 40px;
    padding: 40px 36px;
  }

  .page-about .next-visual {
    height: 180px;
  }
}

@media (min-width: 1080px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: 56px;
    padding: 72px 0 84px;
  }

  .page-about .about-hero-visual {
    width: min(420px, 100%);
    margin: 0 0 0 auto;
  }

  .page-about .coverage-figure {
    margin-top: 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .hv-ring,
  .page-about .hv-dot,
  .page-about .v-item--current .v-node {
    animation: none;
  }

  .page-about .award-more {
    transition: none;
  }
}
<<<END>>>