.page-about {
  --about-rail: 6.5rem;
  --about-rule: rgba(14, 58, 63, 0.13);
  --about-hair: rgba(247, 244, 236, 0.22);
  --about-ink-dim: rgba(247, 244, 236, 0.78);
  background: var(--dj-bg);
  color: var(--dj-ink);
  overflow-x: clip;
}

.page-about .dj-prose {
  max-width: 68ch;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(1.5rem, 4vw, 2.75rem) 0 clamp(2.75rem, 7vw, 5.5rem);
  background:
    radial-gradient(120% 90% at 88% 10%, rgba(255, 106, 26, 0.14), transparent 58%),
    linear-gradient(160deg, var(--dj-deep) 0%, var(--dj-deep-2) 100%);
  color: var(--dj-bg);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(2rem, 6vw, 3.5rem);
  align-items: center;
}

.page-about .about-hero .dj-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 clamp(1.4rem, 4vw, 2.4rem);
  padding: 0;
  list-style: none;
  font-family: var(--dj-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-about .about-hero .dj-breadcrumb__link {
  color: var(--about-ink-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-about .about-hero .dj-breadcrumb__link:hover,
.page-about .about-hero .dj-breadcrumb__link:focus-visible {
  color: var(--dj-orange-soft);
  border-bottom-color: var(--dj-orange-soft);
}

.page-about .about-hero .dj-breadcrumb__sep {
  color: rgba(247, 244, 236, 0.4);
}

.page-about .about-hero .dj-breadcrumb__current {
  color: var(--dj-bg);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 1rem;
  font-family: var(--dj-font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dj-orange-soft);
}

.page-about .about-hero__title {
  margin: 0 0 1.4rem;
  font-family: var(--dj-font-head);
  font-weight: 800;
  font-size: clamp(2.1rem, 7vw, 4.4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: #fff;
}

.page-about .about-hero__text {
  margin: 0 0 2rem;
  max-width: 34rem;
  font-size: clamp(1rem, 2.2vw, 1.0625rem);
  line-height: 1.8;
  color: var(--about-ink-dim);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: clamp(2rem, 5vw, 3rem);
}

.page-about .about-hero__ghost,
.page-about .about-cta__ghost {
  color: var(--dj-bg);
  border-color: rgba(247, 244, 236, 0.42);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
}

.page-about .about-hero__fact {
  padding: 0.9rem 1rem;
  background: rgba(8, 40, 44, 0.55);
}

.page-about .about-hero__fact dt {
  margin-bottom: 0.3rem;
  font-family: var(--dj-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(247, 244, 236, 0.62);
}

.page-about .about-hero__fact dd {
  margin: 0;
  font-family: var(--dj-font-mono);
  font-size: 1.35rem;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--dj-orange-soft);
}

.page-about .about-hero__viz {
  position: relative;
  aspect-ratio: 1 / 1;
  max-height: 34rem;
  min-height: 15rem;
  width: 100%;
}

.page-about .about-hero__ring {
  position: absolute;
  inset: 50% auto auto 50%;
  translate: -50% -50%;
  border-radius: 50%;
  border: 1px solid rgba(247, 244, 236, 0.24);
}

.page-about .about-hero__ring--1 { width: 46%; height: 46%; border-color: rgba(255, 106, 26, 0.55); }
.page-about .about-hero__ring--2 { width: 70%; height: 70%; border-style: dashed; }
.page-about .about-hero__ring--3 { width: 94%; height: 94%; border-color: rgba(217, 231, 250, 0.22); }

.page-about .about-hero__beam {
  position: absolute;
  inset: 50% auto auto 50%;
  translate: -50% -50%;
  width: 108%;
  height: 1px;
  rotate: -22deg;
  background: linear-gradient(90deg, transparent, var(--dj-orange), transparent);
}

.page-about .about-hero__dot {
  position: absolute;
  top: 14%;
  right: 18%;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--dj-orange);
  box-shadow: 0 0 0 8px rgba(255, 106, 26, 0.16);
}

/* ---------- 章节速览 ---------- */
.page-about .about-toc {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(247, 244, 236, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-toc__inner {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.6rem 0;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-about .about-toc__label {
  flex: none;
  font-family: var(--dj-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--dj-muted);
}

.page-about .about-toc__list {
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-toc__link {
  display: block;
  flex: none;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--about-rule);
  border-radius: var(--dj-pill);
  font-size: 0.8125rem;
  color: var(--dj-ink);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  border-color: var(--dj-orange);
  background: var(--dj-orange-soft);
  color: var(--dj-deep);
}

/* ---------- 章节通用骨架 ---------- */
.page-about .about-chapter__grid {
  display: grid;
  gap: 1.25rem;
}

.page-about .about-chapter__num {
  display: block;
  font-family: var(--dj-font-mono);
  font-size: clamp(2rem, 6.5vw, 3.4rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: rgba(14, 58, 63, 0.22);
}

.page-about .about-chapter__body > .dj-h2 {
  margin: 0 0 1.25rem;
}

.page-about .about-chapter__body > .dj-prose {
  margin: 0 0 1.5rem;
}

.page-about .about-chapter__note {
  margin: 2rem 0 0;
  padding-left: 0.9rem;
  border-left: 3px solid var(--dj-moss);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--dj-muted);
}

.page-about .about-chapter--band .about-chapter__num { color: rgba(255, 216, 191, 0.4); }
.page-about .about-chapter--band .dj-h2 { color: #fff; }
.page-about .about-chapter--band .about-chapter__text { color: var(--about-ink-dim); }
.page-about .about-chapter--band .about-chapter__note { color: rgba(247, 244, 236, 0.66); }

/* ---------- 01 江水横幅 ---------- */
.page-about .about-band {
  position: relative;
  margin: 0 0 1.75rem;
  border-radius: var(--dj-radius);
  overflow: hidden;
  border: 1px solid var(--about-rule);
}

.page-about .about-band__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 3;
  object-fit: cover;
  filter: saturate(0.85);
}

.page-about .about-band__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  max-width: 88%;
  padding: 0.55rem 0.9rem;
  background: rgba(8, 40, 44, 0.82);
  color: var(--dj-bg);
  font-size: 0.8125rem;
  line-height: 1.5;
  border-top-right-radius: 12px;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  display: grid;
  gap: 1rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-about .about-timeline__node {
  position: relative;
  padding: 1.3rem 1.1rem 1.2rem;
  background: var(--dj-paper);
  border: 1px solid var(--about-rule);
  border-top: 4px solid var(--dj-moss);
  border-radius: 4px 4px 14px 14px;
  box-shadow: var(--dj-shadow-card);
}

.page-about .about-timeline__node:nth-child(2) { border-top-color: var(--dj-blue); }
.page-about .about-timeline__node:nth-child(3) { border-top-color: var(--dj-clay); }
.page-about .about-timeline__node:nth-child(4) { border-top-color: var(--dj-orange); }

.page-about .about-timeline__dot {
  position: absolute;
  top: -10px;
  left: 1.1rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: currentColor;
  border: 3px solid var(--dj-bg);
  color: var(--dj-moss);
}

.page-about .about-timeline__node:nth-child(2) .about-timeline__dot { color: var(--dj-blue); }
.page-about .about-timeline__node:nth-child(3) .about-timeline__dot { color: var(--dj-clay); }
.page-about .about-timeline__node:nth-child(4) .about-timeline__dot { color: var(--dj-orange); }

.page-about .about-timeline__phase {
  margin: 0 0 0.5rem;
  font-family: var(--dj-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--dj-muted);
}

.page-about .about-timeline__title {
  margin: 0 0 0.5rem;
  font-family: var(--dj-font-head);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--dj-deep);
}

.page-about .about-timeline__text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--dj-ink);
}

/* ---------- 02 团队 ---------- */
.page-about .about-crew {
  margin-top: 1.5rem;
}

.page-about .about-crew__card {
  height: 100%;
  border-top: 3px solid var(--dj-moss);
}

.page-about .about-crew__card:nth-child(2) { border-top-color: var(--dj-blue); }
.page-about .about-crew__card:nth-child(3) { border-top-color: var(--dj-orange); }

.page-about .about-crew__card .dj-card__title {
  font-size: 1.0625rem;
}

.page-about .about-crew__card p {
  margin: 0.65rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-about .about-crew__note {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--about-rule);
}

/* ---------- 03 数据链路 ---------- */
.page-about .about-pipeline {
  display: grid;
  gap: 2rem;
  margin-top: 1.5rem;
}

.page-about .about-flow {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  border-left: 2px solid var(--dj-blue-soft);
}

.page-about .about-flow__step {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  padding: 0 0 1.5rem 1.25rem;
}

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

.page-about .about-flow__step::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 0.4rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--dj-blue);
  box-shadow: 0 0 0 4px var(--dj-blue-soft);
}

.page-about .about-flow__no {
  font-family: var(--dj-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--dj-blue);
  padding-top: 0.15rem;
}

.page-about .about-flow__title {
  margin: 0 0 0.4rem;
  font-family: var(--dj-font-head);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--dj-deep);
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-about .about-pipeline__media {
  margin: 0;
  border: 1px solid var(--about-rule);
}

.page-about .about-pipeline__media .dj-media__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 04 版本迭代 ---------- */
.page-about .about-versions__media {
  margin: 0 0 2rem;
  border: 1px solid var(--about-rule);
  background: var(--dj-blue-soft);
}

.page-about .about-versions__media .dj-media__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-about .about-versions {
  display: grid;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-versions__item {
  position: relative;
  padding: 1.15rem 1.15rem 1.15rem 1.35rem;
  background: var(--dj-paper);
  border: 1px solid var(--about-rule);
  border-radius: var(--dj-radius);
  box-shadow: var(--dj-shadow-card);
}

.page-about .about-versions__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.1rem;
  bottom: 1.1rem;
  width: 4px;
  border-radius: 0 4px 4px 0;
  background: var(--dj-moss);
}

.page-about .about-versions__item:nth-child(2)::before { background: var(--dj-blue); }
.page-about .about-versions__item:nth-child(3)::before { background: var(--dj-clay); }
.page-about .about-versions__item:nth-child(4)::before { background: var(--dj-moss); }

.page-about .about-versions__item--current {
  background: linear-gradient(150deg, var(--dj-deep) 0%, var(--dj-deep-2) 100%);
  border-color: var(--dj-deep-3);
}

.page-about .about-versions__item--current::before { background: var(--dj-orange); }

.page-about .about-versions__item--current .about-versions__no { color: var(--dj-orange-soft); }
.page-about .about-versions__item--current .about-versions__title { color: #fff; }
.page-about .about-versions__item--current p { color: var(--about-ink-dim); }

.page-about .about-versions__no {
  display: block;
  margin-bottom: 0.45rem;
  font-family: var(--dj-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--dj-muted);
}

.page-about .about-versions__title {
  margin: 0 0 0.45rem;
  font-family: var(--dj-font-head);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--dj-deep);
}

.page-about .about-versions__item p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* ---------- 05 球迷社群 ---------- */
.page-about .about-seals {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 0 0 2rem;
  padding: 0;
  list-style: none;
}

.page-about .about-seal {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 7.25rem;
  height: 7.25rem;
  border: 2px dashed rgba(255, 216, 191, 0.55);
  border-radius: 50%;
  text-align: center;
  padding: 0.5rem;
}

.page-about .about-seal__big {
  font-family: var(--dj-font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--dj-orange-soft);
  line-height: 1.1;
}

.page-about .about-seal__small {
  margin-top: 0.3rem;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: rgba(247, 244, 236, 0.72);
}

.page-about .about-scene__card {
  height: 100%;
  background: var(--dj-paper);
}

.page-about .about-scene__card .dj-card__title {
  font-size: 1.0625rem;
}

.page-about .about-scene__card p {
  margin: 0.65rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-about .about-scene__card .dj-card__meta {
  color: var(--dj-clay);
}

/* ---------- 06 数字 ---------- */
.page-about .about-numbers {
  display: grid;
  gap: 1px;
  margin: 0 0 1.75rem;
  padding: 0;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
  border-radius: var(--dj-radius);
  overflow: hidden;
}

.page-about .about-numbers__item {
  padding: 1.15rem 1.15rem 1.25rem;
  background: var(--dj-paper);
}

.page-about .about-numbers__item dt {
  font-family: var(--dj-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--dj-muted);
}

.page-about .about-numbers__item dd {
  margin: 0.5rem 0 0.55rem;
  font-family: var(--dj-font-mono);
  font-size: clamp(1.5rem, 5vw, 2rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--dj-deep);
  letter-spacing: -0.02em;
}

.page-about .about-numbers__item p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--dj-ink);
}

.page-about .about-why__close {
  margin: 0;
}

/* ---------- 尾部 ---------- */
.page-about .about-cta__inner {
  display: grid;
  gap: 1.5rem;
  align-items: center;
}

.page-about .about-cta__text .dj-h2 {
  margin: 0 0 0.75rem;
  color: #fff;
}

.page-about .about-cta__text p {
  margin: 0;
  max-width: 40rem;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--about-ink-dim);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ---------- 显现动效 ---------- */
.page-about [data-reveal] {
  opacity: 1;
}

@media (prefers-reduced-motion: no-preference) {
  .page-about [data-reveal] {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .page-about [data-reveal].is-visible {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-flow__step {
    grid-template-columns: 2.25rem minmax(0, 1fr);
    gap: 1.1rem;
  }

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

  .page-about .about-versions__item--current {
    grid-column: 1 / -1;
  }

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

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.4fr) auto;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(2.5rem, 5vw, 5rem);
  }

  .page-about .about-chapter__grid {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 4.5rem);
    align-items: start;
  }

  .page-about .about-chapter__rail {
    position: sticky;
    top: 4.5rem;
    padding-top: 0.35rem;
  }

  .page-about .about-chapter__num {
    border-right: 2px solid var(--about-rule);
    padding-right: 1rem;
    text-align: right;
  }

  .page-about .about-chapter--band .about-chapter__num {
    border-right-color: var(--about-hair);
  }

  .page-about .about-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.25rem;
    padding-top: 1.75rem;
  }

  .page-about .about-timeline::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--dj-moss), var(--dj-blue), var(--dj-clay), var(--dj-orange));
  }

  .page-about .about-timeline {
    position: relative;
  }

  .page-about .about-timeline__node {
    border-top: 1px solid var(--about-rule);
    border-radius: var(--dj-radius);
    padding-top: 1.5rem;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
  }

  .page-about .about-timeline__node:hover,
  .page-about .about-timeline__node:focus-within {
    transform: translateY(-4px);
    box-shadow: 0 26px 52px -34px rgba(8, 40, 44, 0.9);
  }

  .page-about .about-timeline__dot {
    top: -1.8rem;
    left: 50%;
    translate: -50% 0;
    width: 14px;
    height: 14px;
  }

  .page-about .about-pipeline {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }

  .page-about .about-pipeline__media {
    position: sticky;
    top: 5rem;
  }

  .page-about .about-versions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }

  .page-about .about-numbers {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-seals {
    gap: 1.5rem;
  }
}
<<<END>>>