.page-about {
  --about-gap: clamp(20px, 3vw, 36px);
  --about-pad: clamp(22px, 3.5vw, 36px);
  --about-mini: rgba(30, 86, 69, 0.55);
  --about-signal-soft: rgba(200, 255, 77, 0.08);
  --about-orange-soft: rgba(255, 155, 61, 0.10);
  color: var(--fog);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(44px, 8vw, 88px) 0 clamp(28px, 4vw, 44px);
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(200, 255, 77, 0.12), transparent 55%),
    radial-gradient(90% 70% at -10% 110%, rgba(255, 155, 61, 0.10), transparent 55%),
    var(--ink);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  top: 8%;
  width: 60%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--lime), transparent);
  transform: rotate(-14deg);
  opacity: 0.55;
  pointer-events: none;
}

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

.page-about .about-hero .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 clamp(20px, 3vw, 32px);
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--stone);
}

.page-about .about-hero .crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--about-mini);
}

.page-about .about-hero .crumbs a {
  color: var(--stone);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.page-about .about-hero .crumbs a:hover {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.page-about .about-hero-grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-hero-copy h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(34px, 6.2vw, 64px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--fog);
}

.page-about .about-hero-copy .lede {
  margin: 18px 0 0;
  max-width: 56ch;
  color: var(--stone);
  font-size: 16px;
  line-height: 1.7;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 22px;
  align-items: center;
  margin-top: 26px;
}

.page-about .about-hero-media {
  position: relative;
  margin: 0;
  background: var(--ink-2);
  clip-path: var(--cut-lg);
  border: 1px solid var(--line);
}

.page-about .about-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.06);
}

.page-about .media-cap {
  position: absolute;
  left: 14px;
  bottom: 12px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--lime);
  clip-path: var(--cut-sm);
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-hero-stats li {
  padding: 18px 20px 20px;
  background: var(--ink-2);
}

.page-about .stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 4.6vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-about .stat-num .stat-unit {
  margin-left: 4px;
  font-size: 0.48em;
  color: var(--lime);
}

.page-about .stat-cap {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--stone);
}

/* ---------- 章节头 ---------- */
.page-about .about-head {
  max-width: 60ch;
}

.page-about .about-head .section-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--fog);
}

.page-about .about-head .lede {
  margin: 14px 0 0;
  color: var(--stone);
  font-size: 15.5px;
  line-height: 1.7;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  background: var(--ink);
}

.page-about .lineup {
  position: relative;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0 0 0 clamp(18px, 3vw, 30px);
  list-style: none;
  border-left: 2px solid var(--about-mini);
}

.page-about .lineup-row {
  position: relative;
  display: grid;
  gap: 10px;
  padding: 22px 0 24px clamp(14px, 2.4vw, 26px);
  border-bottom: 1px solid var(--about-mini);
}

.page-about .lineup-row:last-child {
  border-bottom: 0;
}

.page-about .lineup-row::before {
  content: "";
  position: absolute;
  left: calc(-1 * clamp(18px, 3vw, 30px) - 7px);
  top: 28px;
  width: 12px;
  height: 12px;
  background: var(--ink);
  border: 2px solid var(--line);
  transition: border-color 0.18s ease, background-color 0.18s ease, transform 0.18s ease;
}

.page-about .lineup-row:hover::before,
.page-about .lineup-row:focus-within::before {
  border-color: var(--lime);
  background: var(--lime);
  transform: scale(1.15);
}

.page-about .lineup-side {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.page-about .lineup-phase {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--lime);
}

.page-about .lineup-tag {
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--amber);
  clip-path: var(--cut-sm);
}

.page-about .lineup-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--fog);
}

.page-about .lineup-body p {
  margin: 8px 0 0;
  max-width: 60ch;
  color: var(--stone);
  font-size: 14.5px;
  line-height: 1.68;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background: var(--ink-2);
}

.page-about .team-grid {
  display: grid;
  gap: var(--about-gap);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .team-media {
  position: relative;
  margin: 0;
  background: var(--ink-3);
  clip-path: var(--cut-lg);
  border: 1px solid var(--line);
}

.page-about .team-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.8) contrast(1.06);
}

.page-about .team-media .media-cap {
  background: var(--orange);
}

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

.page-about .team-card {
  padding: 20px 20px 22px;
  background: var(--ink);
  border-left: 2px solid transparent;
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.page-about .team-card:hover {
  border-left-color: var(--lime);
  background: var(--about-signal-soft);
}

.page-about .team-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-about .team-name {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--fog);
}

.page-about .team-card p {
  margin: 8px 0 0;
  color: var(--stone);
  font-size: 14px;
  line-height: 1.65;
}

/* ---------- 内容地图 ---------- */
.page-about .about-map {
  background: var(--ink);
}

.page-about .map-wrap {
  display: grid;
  gap: var(--about-gap);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .map-media {
  position: relative;
  margin: 0;
  background: var(--ink-2);
  clip-path: var(--cut-lg);
  border: 1px solid var(--line);
}

.page-about .map-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 4;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.06);
}

.page-about .map-media .media-cap {
  background: var(--amber);
}

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

.page-about .lattice-group {
  padding: 16px 18px 18px;
  background: var(--ink-2);
}

.page-about .lattice-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--fog);
}

.page-about .lattice-head span {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--stone);
}

.page-about .lattice-cells {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .lattice-cells li {
  display: grid;
  place-items: center;
  height: 30px;
  font-family: var(--font-mono);
  font-size: 11px;
  border: 1px solid var(--line);
  clip-path: var(--cut-sm);
  transition: border-color 0.18s ease, color 0.18s ease, background-color 0.18s ease;
}

.page-about .lattice-group--a .lattice-cells li {
  color: var(--lime);
  border-color: rgba(200, 255, 77, 0.42);
  background: rgba(200, 255, 77, 0.06);
}

.page-about .lattice-group--b .lattice-cells li {
  color: var(--orange);
  border-color: rgba(255, 155, 61, 0.42);
  background: var(--about-orange-soft);
}

.page-about .lattice-group--c .lattice-cells li {
  color: var(--amber);
  border-color: rgba(255, 209, 102, 0.42);
  background: rgba(255, 209, 102, 0.06);
}

.page-about .lattice-group--d .lattice-cells li {
  color: var(--stone);
  border-color: var(--line);
  background: rgba(159, 184, 166, 0.06);
}

.page-about .lattice-cells li:hover {
  border-color: var(--fog);
  background: rgba(243, 248, 240, 0.10);
}

.page-about .map-notes {
  display: grid;
  gap: 10px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .map-notes li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--stone);
}

.page-about .dot {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 6px;
  border-radius: 50%;
}

.page-about .dot--lime { background: var(--lime); }
.page-about .dot--orange { background: var(--orange); }
.page-about .dot--amber { background: var(--amber); }

/* ---------- 合作与荣誉 ---------- */
.page-about .about-partners {
  background: var(--ink-2);
}

.page-about .partners-grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .partners-copy .section-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--fog);
}

.page-about .partners-copy .lede {
  margin: 14px 0 22px;
  max-width: 56ch;
  color: var(--stone);
  font-size: 15px;
  line-height: 1.72;
}

.page-about .honor-list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .honor {
  padding: 18px 20px 20px;
  background: var(--ink);
  border-top: 2px solid transparent;
  transition: border-color 0.18s ease;
}

.page-about .honor:hover {
  border-top-color: var(--lime);
}

.page-about .honor-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.6vw, 34px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-about .honor-num em {
  margin-left: 4px;
  font-size: 0.42em;
  font-style: normal;
  letter-spacing: 0.04em;
  color: var(--lime);
}

.page-about .honor-cap {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--stone);
}

/* ---------- 版本迭代 ---------- */
.page-about .about-version {
  background: var(--ink);
}

.page-about .version-head .section-title {
  margin: 10px 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--fog);
}

.page-about .version-badge {
  display: inline-block;
  padding: 3px 12px;
  font-family: var(--font-mono);
  font-size: 0.58em;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
  background: var(--orange);
  clip-path: var(--cut-sm);
}

.page-about .version-head .lede {
  margin: 14px 0 0;
  max-width: 58ch;
  color: var(--stone);
  font-size: 15.5px;
  line-height: 1.7;
}

.page-about .version-list {
  display: grid;
  gap: 1px;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .version-item {
  padding: 22px 20px 24px;
  background: var(--ink-2);
  border-top: 2px solid transparent;
  transition: border-color 0.18s ease;
}

.page-about .version-item:hover {
  border-top-color: var(--lime);
}

.page-about .version-tag {
  display: inline-block;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--lime);
  clip-path: var(--cut-sm);
}

.page-about .version-name {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.28;
  color: var(--fog);
}

.page-about .version-item p {
  margin: 8px 0 0;
  color: var(--stone);
  font-size: 14px;
  line-height: 1.65;
}

.page-about .version-foot {
  margin: clamp(20px, 3vw, 28px) 0 0;
}

.page-about .version-foot .link-arrow {
  font-size: 14px;
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.16s ease, color 0.16s ease;
}

.page-about .version-foot .link-arrow:hover {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* ---------- 桌面细化 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero-stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .lineup-row {
    grid-template-columns: 150px 1fr;
    gap: 18px 30px;
    align-items: start;
  }

  .page-about .lineup-side {
    flex-direction: column;
    align-items: flex-start;
    position: sticky;
    top: 96px;
  }

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

  .page-about .map-notes {
    grid-template-columns: repeat(3, 1fr);
    gap: 14px 24px;
    align-items: start;
  }

  .page-about .honor-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .version-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 960px) {
  .page-about .about-hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: end;
  }

  .page-about .about-hero-media {
    transform: translateY(12px);
  }

  .page-about .team-grid {
    grid-template-columns: 0.85fr 1.15fr;
    align-items: start;
  }

  .page-about .map-wrap {
    grid-template-columns: 0.82fr 1.18fr;
    align-items: stretch;
  }

  .page-about .lattice {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    align-content: stretch;
  }

  .page-about .partners-grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: start;
  }

  .page-about .honor-list {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .lineup-row::before,
  .page-about .team-card,
  .page-about .honor,
  .page-about .version-item,
  .page-about .lattice-cells li {
    transition: none;
  }
}