.page-about {
  --about-rail: 200px;
  --about-line: rgba(25, 245, 198, .16);
  --about-card: rgba(7, 51, 42, .62);
  background: var(--ink);
  color: var(--bone);
  overflow-x: hidden;
}

/* ---------- 通用小件 ---------- */
.page-about .hl {
  color: var(--neon);
}

.page-about .chapter-head {
  max-width: 44em;
  margin-bottom: clamp(28px, 4vw, 52px);
}

.page-about .chapter-kicker {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .18em;
  color: var(--lime);
  margin: 0 0 12px;
}

.page-about .chapter-head h2,
.page-about .watch-lede h2,
.page-about .local-text h2,
.page-about .next-panel h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.55rem, 3.4vw, 2.6rem);
  line-height: 1.18;
  letter-spacing: -.02em;
  color: var(--bone);
  margin: 0 0 16px;
}

.page-about .chapter-lead,
.page-about .watch-lede p,
.page-about .local-text p,
.page-about .next-panel p {
  font-size: 1rem;
  line-height: 1.8;
  color: #B9CDC7;
  margin: 0 0 14px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: calc(var(--header-h) + clamp(36px, 6vw, 84px)) 0 clamp(30px, 5vw, 60px);
  background:
    radial-gradient(120% 78% at 80% 8%, rgba(25, 245, 198, .15), transparent 62%),
    radial-gradient(90% 70% at 8% 96%, rgba(255, 122, 47, .10), transparent 60%),
    var(--ink);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon), transparent);
  opacity: .45;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
  align-items: center;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6vw, 4rem);
  line-height: 1.06;
  letter-spacing: -.025em;
  color: var(--bone);
  margin: 18px 0 22px;
  max-width: 16em;
}

.page-about .about-hero__lead {
  max-width: 40em;
  font-size: clamp(1rem, 1.1vw, 1.0625rem);
  line-height: 1.85;
  color: #BFD3CD;
  margin: 0;
}

.page-about .about-orbit-col {
  display: flex;
  justify-content: center;
}

.page-about .about-orbit {
  width: 100%;
  max-width: 300px;
  height: auto;
  display: block;
}

@media (prefers-reduced-motion: no-preference) {
  .page-about .about-orbit__ticks {
    transform-origin: 160px 160px;
    animation: about-orbit-spin 96s linear infinite;
  }
}

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

/* 首屏指标 */
.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(34px, 5vw, 58px) 0 0;
  background: var(--hairline-soft);
  border: 1px solid var(--hairline-soft);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.page-about .about-fact {
  background: var(--ink-2);
  padding: clamp(16px, 2.4vw, 26px);
  margin: 0;
}

.page-about .fact-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  font-weight: 700;
  color: var(--neon);
  margin: 0;
  line-height: 1.1;
}

.page-about .fact-label {
  margin: 10px 0 0;
  font-size: .8125rem;
  line-height: 1.65;
  color: var(--grey);
}

/* ---------- 通栏图 ---------- */
.page-about .about-banner {
  margin: 0;
  position: relative;
}

.page-about .about-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-about .about-banner figcaption {
  padding: 12px var(--gutter) 0;
  font-size: .75rem;
  color: var(--grey);
  letter-spacing: .04em;
}

/* ---------- 年轮 + 面板流 ---------- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .rail-title {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .16em;
  color: var(--grey);
  margin: 0 0 12px;
}

.page-about .rail-list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .rail-list::-webkit-scrollbar {
  display: none;
}

.page-about .rail-node {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  text-decoration: none;
  padding: 9px 14px;
  font-size: .8125rem;
  color: var(--grey);
  background: var(--about-card);
  border: 1px solid var(--hairline-soft);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  transition: color .2s ease, background .2s ease;
}

.page-about .rail-node:hover,
.page-about .rail-node:focus-visible {
  color: var(--bone);
  background: rgba(11, 74, 60, .85);
}

.page-about .rail-idx {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--lime);
  font-size: .75rem;
}

/* 面板流 */
.page-about .about-flow {
  display: flex;
  flex-direction: column;
  gap: clamp(18px, 3vw, 34px);
  min-width: 0;
}

.page-about .flow-panel {
  position: relative;
  padding: clamp(22px, 3.4vw, 42px);
  background: linear-gradient(152deg, rgba(11, 74, 60, .55), rgba(4, 33, 28, .92));
  border: 1px solid var(--hairline-soft);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.page-about .flow-step {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--neon);
  padding: 4px 10px;
  border: 1px solid var(--about-line);
  margin-bottom: 12px;
}

.page-about .flow-head h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.15rem, 2.2vw, 1.6rem);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--bone);
  margin: 0 0 16px;
}

.page-about .flow-panel p {
  font-size: .9375rem;
  line-height: 1.85;
  color: #AFC5BF;
  margin: 0 0 14px;
  max-width: 44em;
}

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

.page-about .flow-note {
  padding-left: 14px;
  border-left: 2px solid var(--lime);
  font-size: .875rem !important;
  color: var(--grey) !important;
}

.page-about .flow-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.6vw, 30px);
}

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

.page-about .flow-figure img,
.page-about .season-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--hairline-soft);
}

/* ---------- 赛季运转 ---------- */
.page-about .about-season {
  background: linear-gradient(180deg, transparent, rgba(7, 51, 42, .55) 40%, transparent);
}

.page-about .season-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .season-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .season-step {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding-bottom: clamp(20px, 3vw, 30px);
}

.page-about .season-step::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 46px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, var(--pitch), transparent);
}

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

.page-about .season-step:last-child::before {
  display: none;
}

.page-about .step-no {
  position: relative;
  z-index: 1;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .8125rem;
  font-weight: 700;
  color: var(--ink);
  background: var(--lime);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
}

.page-about .step-body h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.0625rem;
  color: var(--bone);
  margin: 8px 0 8px;
}

.page-about .step-body p {
  font-size: .9375rem;
  line-height: 1.8;
  color: #A9BFB9;
  margin: 0;
  max-width: 40em;
}

.page-about .season-media {
  margin: 0;
}

.page-about .season-media figcaption {
  margin-top: 10px;
  font-size: .75rem;
  line-height: 1.7;
  color: var(--grey);
}

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

.page-about .team-card {
  position: relative;
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--ink-2);
  border-top: 2px solid var(--pitch);
  border-right: 1px solid rgba(11, 74, 60, .8);
  border-bottom: 1px solid rgba(11, 74, 60, .8);
  border-left: 1px solid rgba(11, 74, 60, .8);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}

.page-about .team-card--a { border-top-color: var(--neon); }
.page-about .team-card--b { border-top-color: var(--lime); }
.page-about .team-card--c { border-top-color: #2FD8B4; }
.page-about .team-card--d { border-top-color: var(--pitch); }

.page-about .team-mark {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .75rem;
  letter-spacing: .14em;
  color: var(--lime);
  margin-bottom: 14px;
}

.page-about .team-card h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.0625rem;
  color: var(--bone);
  margin: 0 0 10px;
}

.page-about .team-card p {
  font-size: .875rem;
  line-height: 1.8;
  color: #A5BBB5;
  margin: 0;
}

/* ---------- 观看体验 ---------- */
.page-about .watch-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 54px);
}

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

.page-about .watch-item {
  background: var(--ink);
  padding: clamp(20px, 2.8vw, 30px);
}

.page-about .watch-item h3 {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.0625rem;
  color: var(--bone);
  margin: 0 0 10px;
}

.page-about .watch-item h3::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  background: var(--neon);
  transform: rotate(45deg);
  margin-top: 6px;
}

.page-about .watch-item p {
  font-size: .9375rem;
  line-height: 1.8;
  color: #A9BFB9;
  margin: 0;
}

/* ---------- 合作生态 ---------- */
.page-about .partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .partner-block {
  padding: clamp(22px, 3vw, 34px);
  background: linear-gradient(160deg, rgba(11, 74, 60, .5), rgba(7, 51, 42, .3));
  border: 1px solid var(--hairline-soft);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-about .partner-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--neon);
  margin: 0 0 6px;
}

.page-about .partner-block h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  color: var(--bone);
  margin: 0 0 12px;
}

.page-about .partner-block p {
  font-size: .9375rem;
  line-height: 1.8;
  color: #A9BFB9;
  margin: 0;
}

.page-about .partner-block--note {
  background: rgba(4, 33, 28, .9);
  border-color: var(--about-line);
}

/* ---------- 本地运营 ---------- */
.page-about .local-panel {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
  padding: clamp(24px, 3.6vw, 46px);
  background:
    repeating-linear-gradient(135deg, rgba(11, 74, 60, .22) 0 1px, transparent 1px 14px),
    var(--ink-2);
  border-left: 3px solid var(--neon);
}

.page-about .local-text h2 {
  margin-top: 0;
}

.page-about .local-rule {
  display: flex;
  flex-direction: column;
  gap: 16px;
  justify-content: flex-end;
}

.page-about .rule-slash {
  display: block;
  width: 72px;
  height: 3px;
  background: var(--lime);
  transform: skewX(-32deg);
}

.page-about .track-line {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .16em;
  color: var(--grey);
  margin: 0;
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-about .next-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 40px);
  padding: clamp(26px, 3.8vw, 52px);
  background: linear-gradient(135deg, rgba(11, 74, 60, .7), rgba(4, 33, 28, .95));
  border: 1px solid var(--hairline-soft);
  clip-path: polygon(0 0, calc(100% - 32px) 0, 100% 32px, 100% 100%, 0 100%);
}

.page-about .next-panel h2 {
  font-size: clamp(1.4rem, 2.8vw, 2.1rem);
  margin-bottom: 12px;
}

.page-about .next-panel p {
  margin: 0;
  max-width: 34em;
}

.page-about .next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-start;
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

  .page-about .partner-block--note {
    grid-column: 1 / -1;
  }

  .page-about .flow-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, .85fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
  }

  .page-about .watch-grid {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    align-items: start;
  }

  .page-about .season-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
  }

  .page-about .season-media {
    position: sticky;
    top: calc(var(--header-h) + 32px);
  }

  .page-about .local-panel {
    grid-template-columns: minmax(0, 1fr) 200px;
    align-items: end;
  }

  .page-about .next-panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 78px);
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h) + 36px);
    align-self: start;
  }

  .page-about .rail-title {
    margin-bottom: 18px;
  }

  .page-about .rail-list {
    display: block;
    position: relative;
    overflow: visible;
    padding: 0;
  }

  .page-about .rail-list::before {
    content: "";
    position: absolute;
    left: 3px;
    top: 20px;
    bottom: 20px;
    width: 1px;
    background: linear-gradient(180deg, var(--neon), var(--pitch) 60%, transparent);
    opacity: .55;
  }

  .page-about .rail-node {
    display: block;
    white-space: normal;
    border: 0;
    background: none;
    clip-path: none;
    padding: 14px 0 14px 22px;
    position: relative;
  }

  .page-about .rail-node::before {
    content: "";
    position: absolute;
    left: 0;
    top: 20px;
    width: 7px;
    height: 7px;
    background: var(--pitch);
    transform: rotate(45deg);
    transition: background .2s ease, box-shadow .2s ease;
  }

  .page-about .rail-node:hover::before,
  .page-about .rail-node:focus-visible::before {
    background: var(--lime);
    box-shadow: 0 0 0 4px rgba(201, 255, 94, .16);
  }

  .page-about .rail-idx {
    display: block;
    font-size: .6875rem;
    letter-spacing: .14em;
  }

  .page-about .rail-year {
    display: block;
    font-size: 1rem;
    font-weight: 700;
    color: var(--bone);
    margin-top: 5px;
  }

  .page-about .rail-desc {
    display: block;
    font-size: .75rem;
    line-height: 1.6;
    color: var(--grey);
    margin-top: 3px;
  }

  .page-about .flow-panel:nth-child(1) {
    width: 92%;
  }

  .page-about .flow-panel:nth-child(2) {
    width: 100%;
    margin-left: auto;
  }

  .page-about .flow-panel--wide {
    width: 104%;
    margin-left: -4%;
  }
}

@media (min-width: 1060px) {
  .page-about .team-grid {
    grid-template-columns: 1.22fr 1.4fr 1.06fr 1fr;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-orbit__ticks {
    animation: none;
  }

  .page-about .rail-node,
  .page-about .rail-node::before {
    transition: none;
  }
}