/* ===== 平台介绍页 · 页面作用域 ===== */

.page-about .about-hero {
  position: relative;
  padding: 26px 0 0;
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(198, 242, 78, 0.08), transparent 62%),
    var(--eb-ink);
  overflow: hidden;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding-bottom: 32px;
}

/* --- 版本刻度（首屏左栏） --- */
.page-about .about-hero__rail {
  order: 2;
  border-top: 1px solid var(--eb-line);
  padding-top: 20px;
  min-width: 0;
}

.page-about .about-hero__rail .eb-eyebrow {
  margin: 0 0 14px;
}

.page-about .vrail {
  list-style: none;
  margin: 0 0 16px;
  padding: 0 0 0 18px;
  border-left: 2px solid var(--eb-line);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px 10px;
}

.page-about .vrail__item {
  position: relative;
  display: grid;
  gap: 2px;
  font-family: var(--eb-font-num);
}

.page-about .vrail__item::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 4px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--eb-ink);
  border: 2px solid var(--eb-line);
}

.page-about .vrail__v {
  font-size: 14px;
  font-weight: 700;
  color: var(--eb-cream);
  letter-spacing: 0.06em;
}

.page-about .vrail__t {
  font-size: 11px;
  color: var(--eb-mist);
  letter-spacing: 0.08em;
}

.page-about .vrail__item--now::before {
  background: var(--eb-lime);
  border-color: var(--eb-lime);
  box-shadow: 0 0 0 5px rgba(198, 242, 78, 0.16);
}

.page-about .vrail__item--now .vrail__v {
  color: var(--eb-lime);
}

.page-about .about-hero__railnote {
  margin: 0;
  padding-left: 18px;
  border-left: 2px solid var(--eb-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--eb-mist);
}

/* --- 首屏主区 --- */
.page-about .about-hero__main {
  min-width: 0;
}

.page-about .about-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  font-family: var(--eb-font-num);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--eb-mist);
}

.page-about .about-crumb a {
  color: var(--eb-lime);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 160ms ease;
}

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

.page-about .about-hero__main .eb-h1 {
  margin: 0 0 18px;
}

.page-about .about-hero__main .eb-lede {
  margin: 0;
  max-width: 62ch;
}

.page-about .about-hero__stats {
  list-style: none;
  margin: 28px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--eb-line);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-about .about-stat {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.page-about .about-stat__n {
  font-size: 30px;
  line-height: 1;
  color: var(--eb-lime);
  letter-spacing: -0.02em;
}

.page-about .about-stat__k {
  font-size: 14px;
  line-height: 1.6;
  color: var(--eb-mist);
}

.page-about .about-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.page-about .about-hero__figure {
  margin: 0;
  border-top: 3px solid var(--eb-bark);
  background: var(--eb-char);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: cover;
}

.page-about .about-hero__figure .eb-media__cap {
  display: block;
  padding: 12px var(--eb-gutter) 14px;
  border-top: 1px solid var(--eb-line);
  font-size: 13px;
  color: var(--eb-mist);
}

/* ===== 通用章节头 ===== */
.page-about .about-head {
  display: grid;
  gap: 10px;
  max-width: 740px;
  margin-bottom: 30px;
}

.page-about .about-head .eb-index {
  margin: 0;
}

.page-about .about-head__lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--eb-mist);
}

/* ===== B-01 版本刻度 ===== */
.page-about .about-ver__list {
  list-style: none;
  margin: 0 0 0 8px;
  padding: 0;
  border-left: 2px solid var(--eb-line);
}

.page-about .about-ver__item {
  position: relative;
  padding-left: 22px;
  min-width: 0;
}

.page-about .about-ver__item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 24px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--eb-ink);
  border: 2px solid var(--eb-line);
}

.page-about .about-ver__item--now::before {
  background: var(--eb-lime);
  border-color: var(--eb-lime);
  box-shadow: 0 0 0 5px rgba(198, 242, 78, 0.16);
}

.page-about .about-ver__sum {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 16px;
  align-items: center;
  gap: 14px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
}

.page-about .about-ver__sum::-webkit-details-marker {
  display: none;
}

.page-about .about-ver__badge {
  display: grid;
  gap: 2px;
  min-width: 52px;
  font-family: var(--eb-font-num);
}

.page-about .about-ver__badge b {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--eb-lime);
}

.page-about .about-ver__badge i {
  font-style: normal;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--eb-mist);
}

.page-about .about-ver__s {
  font-family: var(--eb-font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--eb-cream);
  transition: color 160ms ease;
}

.page-about .about-ver__sum:hover .about-ver__s {
  color: var(--eb-lime-soft);
}

.page-about .about-sign {
  position: relative;
  display: inline-block;
  width: 14px;
  height: 14px;
  justify-self: end;
  flex: none;
}

.page-about .about-sign::before,
.page-about .about-sign::after {
  content: "";
  position: absolute;
  background: var(--eb-mist);
  transition: transform 220ms ease, background 220ms ease;
}

.page-about .about-sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-about .about-sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-about details[open] > summary .about-sign::after {
  transform: scaleY(0);
}

.page-about details[open] > summary .about-sign::before {
  background: var(--eb-lime);
}

.page-about .about-ver__panel {
  margin: 0 0 16px;
  padding: 2px 0 2px 16px;
  border-left: 3px solid var(--eb-lime);
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--eb-mist);
}

.page-about .about-ver__panel p {
  margin: 0;
}

/* ===== B-02 团队 ===== */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

.page-about .about-team__intro {
  min-width: 0;
}

.page-about .about-team__text {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--eb-mist);
  max-width: 52ch;
}

.page-about .about-team__total {
  margin: 0;
  font-size: 14px;
  color: var(--eb-mist);
  letter-spacing: 0.02em;
}

.page-about .about-team__total .eb-num {
  font-size: 26px;
  color: var(--eb-cream);
  margin-right: 4px;
}

.page-about .about-team__fig {
  margin: 26px 0 0;
  border: 3px solid var(--eb-bark);
}

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

.page-about .about-team__fig .eb-media__cap {
  display: block;
  padding: 10px 12px 12px;
  border-top: 3px solid var(--eb-bark);
  background: var(--eb-surface);
  font-size: 12px;
  line-height: 1.6;
  color: var(--eb-mist);
}

.page-about .tb {
  border-bottom: 1px solid var(--eb-line);
}

.page-about .tb:first-child {
  border-top: 1px solid var(--eb-line);
}

.page-about .tb__sum {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto 16px;
  align-items: center;
  gap: 6px 12px;
  padding: 16px 0 14px;
  cursor: pointer;
  list-style: none;
}

.page-about .tb__sum::-webkit-details-marker {
  display: none;
}

.page-about .tb__name {
  font-family: var(--eb-font-display);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--eb-cream);
}

.page-about .tb__num {
  font-size: 13px;
  color: var(--eb-mist);
}

.page-about .tb__bar {
  grid-column: 1 / -1;
  display: block;
  height: 10px;
  margin-top: 8px;
  background: var(--eb-surface);
  border: 1px solid var(--eb-line);
}

.page-about .tb__fill {
  display: block;
  height: 100%;
  transition: filter 180ms ease;
}

.page-about .tb__sum:hover .tb__fill {
  filter: brightness(1.15);
}

.page-about .tb__fill--1 { width: 43.3%; background: var(--eb-lime); }
.page-about .tb__fill--2 { width: 23.3%; background: var(--eb-lime-soft); }
.page-about .tb__fill--3 { width: 15%; background: var(--eb-track); }
.page-about .tb__fill--4 { width: 18.3%; background: var(--eb-sand); }

.page-about .tb__panel {
  padding: 0 0 18px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--eb-mist);
  border-left: 3px solid var(--eb-lime);
  padding-left: 14px;
  margin-left: 1px;
}

.page-about .tb__panel p {
  margin: 0;
}

/* ===== B-03 覆盖 ===== */
.page-about .about-cover__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

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

.page-about .about-cover__stats li {
  display: grid;
  grid-template-columns: minmax(0, auto) minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--eb-line);
}

.page-about .about-cover__stats li:first-child {
  border-top: 1px solid var(--eb-line);
}

.page-about .about-cover__stats .eb-num {
  font-size: 28px;
  line-height: 1;
  color: var(--eb-lime);
  letter-spacing: -0.02em;
}

.page-about .about-cover__stats li > span:last-child {
  font-size: 14px;
  line-height: 1.65;
  color: var(--eb-mist);
}

.page-about .about-rounds {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-about .about-rounds__track {
  position: relative;
  height: 96px;
  border: 3px solid var(--eb-bark);
  background:
    repeating-linear-gradient(to right, var(--eb-line) 0 2px, transparent 2px 15px),
    var(--eb-surface);
  overflow: hidden;
}

.page-about .about-rounds__fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 64%;
  background: linear-gradient(90deg, rgba(198, 242, 78, 0.3), rgba(198, 242, 78, 0.05));
  border-right: 3px solid var(--eb-lime);
}

.page-about .about-rounds__legend {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-family: var(--eb-font-num);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--eb-mist);
}

.page-about .about-cover__notes {
  list-style: none;
  margin: 34px 0 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--eb-line);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-about .about-cover__notes li {
  font-size: 14px;
  line-height: 1.72;
  color: var(--eb-mist);
  padding-left: 14px;
  border-left: 3px solid var(--eb-line);
}

.page-about .about-cover__notes strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--eb-font-display);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--eb-cream);
}

/* ===== B-04 球场与城市 ===== */
.page-about .about-court__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: center;
}

.page-about .about-court__media {
  border: 3px solid var(--eb-bark);
  background: var(--eb-char);
}

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

.page-about .about-court__body {
  min-width: 0;
}

.page-about .about-court__body .eb-index {
  margin-bottom: 10px;
}

.page-about .about-court__body .eb-h2 {
  margin: 0 0 14px;
}

.page-about .about-court__body > p {
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--eb-mist);
  max-width: 54ch;
}

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

.page-about .about-court__figs div {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.page-about .about-court__figs dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--eb-mist);
}

.page-about .about-court__figs dd {
  margin: 0;
  font-size: 24px;
  line-height: 1.1;
  color: var(--eb-track);
}

/* ===== B-05 合作 ===== */
.page-about .about-collab__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-about .about-collab__item {
  padding: 20px 18px 22px;
  background: var(--eb-surface);
  border-left: 3px solid var(--eb-track);
  min-width: 0;
}

.page-about .about-collab__label {
  margin: 0 0 8px;
  font-family: var(--eb-font-num);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--eb-track);
}

.page-about .about-collab__item .eb-h3 {
  margin: 0 0 10px;
}

.page-about .about-collab__item p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--eb-mist);
}

.page-about .about-collab__item--wide {
  border-left-color: var(--eb-lime);
  background: var(--eb-surface-2);
}

.page-about .about-collab__item--wide .about-collab__label {
  color: var(--eb-lime);
}

/* ===== B-06 服务范围 ===== */
.page-about .about-scope {
  background: var(--eb-char);
  border-top: 3px solid var(--eb-bark);
  padding: 46px 0 52px;
}

.page-about .about-scope__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: start;
}

.page-about .about-scope__body {
  min-width: 0;
}

.page-about .about-scope__body .eb-index {
  margin-bottom: 10px;
}

.page-about .about-scope__body .eb-h2 {
  margin: 0 0 16px;
}

.page-about .about-scope__body p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--eb-mist);
  max-width: 58ch;
}

.page-about .about-scope__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-about .about-scope__mark {
  display: grid;
  gap: 6px;
  justify-items: start;
  padding: 22px 20px;
  border: 3px solid var(--eb-bark);
  background: var(--eb-ink);
  box-shadow: 6px 6px 0 0 var(--eb-bark);
}

.page-about .about-scope__num {
  font-size: 62px;
  line-height: 1;
  color: var(--eb-lime);
  letter-spacing: -0.03em;
}

.page-about .about-scope__cap {
  font-family: var(--eb-font-num);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--eb-mist);
}

/* ===== 断点 ===== */
@media (min-width: 620px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .vrail {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .about-cover__notes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-top: 36px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 0 56px;
    align-items: start;
    padding-bottom: 46px;
  }

  .page-about .about-hero__rail {
    order: 0;
    border-top: 0;
    border-right: 1px solid var(--eb-line);
    padding: 4px 28px 0 0;
  }

  .page-about .vrail {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .page-about .about-hero__figure img {
    max-height: 460px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-cover__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-court__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 48px;
  }

  .page-about .about-collab__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about .about-collab__item--wide {
    grid-column: 1 / -1;
  }

  .page-about .about-scope__inner {
    grid-template-columns: minmax(0, 8fr) minmax(0, 3fr);
    gap: 56px;
    align-items: center;
  }

  .page-about .about-scope__mark {
    justify-items: center;
    padding: 28px 22px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-ver__s {
    font-size: 18px;
  }

  .page-about .about-ver__list {
    max-width: 900px;
  }

  .page-about .about-scope__num {
    font-size: 76px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-sign::before,
  .page-about .about-sign::after,
  .page-about .about-ver__s,
  .page-about .tb__fill,
  .page-about .about-crumb a {
    transition: none;
  }
}
<<<END>>>