.page-about {
  --about-copper-faint: rgba(201, 138, 75, 0.16);
  --about-turf-faint: rgba(53, 224, 140, 0.10);
  --about-shadow: 0 18px 44px rgba(3, 7, 15, 0.5);
  padding-bottom: 0;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  padding-top: 26px;
  padding-bottom: 4px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 64px;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -18%;
  bottom: -10%;
  width: 74%;
  height: 86%;
  background:
    linear-gradient(148deg, transparent 0%, rgba(53, 224, 140, 0.10) 44%, rgba(201, 138, 75, 0.09) 100%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 34px;
}

.page-about .about-hero__kicker {
  margin: 0;
  color: var(--copper);
  letter-spacing: 0.2em;
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-size: clamp(36px, 9vw, 82px);
  line-height: 1.02;
  letter-spacing: -0.015em;
  font-weight: 900;
  color: var(--paper);
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--turf);
  display: inline-block;
}

.page-about .about-hero__lead {
  margin: 20px 0 0;
  max-width: 34ch;
  color: var(--mist);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 0;
}

/* 首屏指标 */
.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  align-self: start;
}

.page-about .about-stat {
  background: var(--night);
  padding: 18px 20px;
}

.page-about .about-stat__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-about .about-stat__value {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(30px, 8vw, 44px);
  line-height: 1;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--turf);
}

.page-about .about-stat__unit {
  font-size: 0.44em;
  color: var(--mist);
  margin-left: 4px;
  letter-spacing: 0.1em;
}

/* ---------- 横向色带 ---------- */
.page-about .about-band {
  position: relative;
  background: linear-gradient(90deg, var(--night) 0%, var(--board) 52%, var(--night) 100%);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  padding: 22px 0 24px;
}

.page-about .about-band::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: repeating-linear-gradient(90deg,
      var(--copper) 0 2px,
      transparent 2px 14px);
  opacity: 0.5;
}

.page-about .about-band__track {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-band__node {
  position: relative;
  padding-top: 16px;
}

.page-about .about-band__node::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--line);
}

.page-about .about-band__node::before {
  content: "";
  position: absolute;
  top: -3px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--turf);
}

.page-about .about-band__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--stoppage);
}

.page-about .about-band__note {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 章节框架 ---------- */
.page-about .about-chapter {
  position: relative;
  padding: 60px 0;
}

.page-about .about-chapter--board {
  background: linear-gradient(180deg, rgba(34, 49, 79, 0.62) 0%, rgba(11, 18, 32, 0) 82%);
}

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

.page-about .about-chapter__rail {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-about .about-chapter__num {
  font-family: var(--font-mono);
  font-size: clamp(48px, 13vw, 92px);
  line-height: 0.82;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--copper);
}

.page-about .about-chapter__vertical {
  writing-mode: horizontal-tb;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--mist);
}

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

.page-about .about-chapter__title {
  margin: 0;
  font-size: clamp(26px, 6vw, 44px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  font-weight: 900;
  color: var(--paper);
}

.page-about .about-chapter__intro {
  margin: 16px 0 0;
  max-width: 38ch;
  color: var(--mist);
}

.page-about .about-chapter__figure {
  margin: 28px 0 0;
}

.page-about .about-chapter__figure figcaption {
  margin-top: 10px;
}

/* ---------- 阶段时间线 ---------- */
.page-about .about-stages {
  position: relative;
  margin: 30px 0 0;
  padding: 0 0 0 30px;
  list-style: none;
}

.page-about .about-stages::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--copper) 0%, var(--line) 60%, transparent 100%);
}

.page-about .about-stage {
  position: relative;
  padding-bottom: 26px;
}

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

.page-about .about-stage__marker {
  position: absolute;
  left: -30px;
  top: 6px;
  width: 13px;
  height: 13px;
  border-radius: 4px;
  background: var(--board);
  border: 1px solid var(--copper);
}

.page-about .about-stage:last-child .about-stage__marker {
  background: var(--stoppage);
  border-color: var(--stoppage);
}

.page-about .about-stage__toggle {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.page-about .about-stage__toggle:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 4px;
}

.page-about .about-stage__year {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--stoppage);
}

.page-about .about-stage__name {
  font-size: 19px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-stage__summary {
  margin: 8px 0 0;
  color: var(--mist);
  max-width: 36ch;
}

.page-about .about-stage__panel {
  margin-top: 10px;
  padding: 12px 14px;
  border-left: 2px solid var(--about-copper-faint);
  background: rgba(20, 30, 51, 0.55);
  border-radius: 0 10px 10px 0;
}

.page-about .about-stage__facts {
  margin: 0;
  padding: 0 0 0 16px;
  list-style: none;
}

.page-about .about-stage__facts li {
  position: relative;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-stage__facts li::before {
  content: "";
  position: absolute;
  left: -14px;
  top: 0.72em;
  width: 6px;
  height: 1px;
  background: var(--scale);
}

/* ---------- 团队错落分布 ---------- */
.page-about .about-team {
  display: grid;
  gap: 18px;
  margin-top: 30px;
}

.page-about .about-team__figure {
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  background: rgba(20, 30, 51, 0.72);
}

.page-about .about-team__figure--big {
  border-left: 3px solid var(--turf);
  box-shadow: var(--about-shadow);
}

.page-about .about-team__figure--small {
  border-left: 3px solid var(--copper);
}

.page-about .about-team__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(46px, 14vw, 76px);
  line-height: 0.9;
  letter-spacing: 0.05em;
  font-weight: 700;
  color: var(--turf);
}

.page-about .about-team__num--alt {
  color: var(--copper);
  font-size: clamp(38px, 11vw, 58px);
}

.page-about .about-team__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
  letter-spacing: 0.04em;
}

.page-about .about-team__points {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-team__point {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-team__tick {
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 10px;
  height: 2px;
  background: var(--scale);
}

.page-about .about-team__point--b .about-team__tick { background: var(--turf); }
.page-about .about-team__point--d .about-team__tick { background: var(--stoppage); }

/* ---------- 班次图 ---------- */
.page-about .about-shifts {
  margin-top: 34px;
  padding: 20px 16px 12px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(11, 18, 32, 0.6);
}

.page-about .about-shifts__caption {
  margin: 0 0 12px;
  color: var(--copper);
  letter-spacing: 0.16em;
}

.page-about .about-shifts__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-shifts__axis {
  stroke: var(--scale);
  stroke-width: 1;
}

.page-about .about-shifts__axis--soft {
  stroke: var(--line-faint);
  stroke-dasharray: 3 5;
}

.page-about .about-shifts__day {
  fill: var(--mist);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.page-about .about-shifts__rowlabel {
  fill: var(--mist);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-about .about-shifts__bar--early { fill: rgba(53, 224, 140, 0.5); }
.page-about .about-shifts__bar--live { fill: rgba(201, 138, 75, 0.55); }
.page-about .about-shifts__bar--late { fill: rgba(255, 107, 53, 0.55); }

/* ---------- 手册版本链 ---------- */
.page-about .about-manual {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-manual__ver {
  flex: 1 1 122px;
  min-width: 108px;
  padding: 14px 14px 16px;
  border-radius: 10px;
  border: 1px solid var(--line-soft);
  border-top: 3px solid var(--copper);
  background: rgba(20, 30, 51, 0.72);
}

.page-about .about-manual__ver--current {
  border-top-color: var(--turf);
  background:
    linear-gradient(180deg, var(--about-turf-faint) 0%, rgba(20, 30, 51, 0.72) 74%);
  box-shadow: var(--about-shadow);
}

.page-about .about-manual__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  letter-spacing: 0.06em;
  color: var(--copper);
}

.page-about .about-manual__ver--current .about-manual__no {
  color: var(--turf);
}

.page-about .about-manual__desc {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--mist);
}

.page-about .about-manual__note {
  margin: 22px 0 0;
  max-width: 40ch;
  padding-left: 16px;
  border-left: 2px solid var(--copper);
  color: var(--mist);
}

/* ---------- 复核 ---------- */
.page-about .about-review {
  display: grid;
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-review__stat {
  padding: 16px 18px;
  border-radius: 12px;
  border: 1px solid var(--line-soft);
  background: rgba(11, 18, 32, 0.68);
}

.page-about .about-review__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(34px, 10vw, 54px);
  line-height: 0.95;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--turf);
}

.page-about .about-review__num--warm { color: var(--stoppage); }
.page-about .about-review__num--copper { color: var(--copper); }

.page-about .about-review__unit {
  font-size: 0.4em;
  margin-left: 4px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-about .about-review__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-review__steps {
  margin-top: 26px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(11, 18, 32, 0.55);
  padding: 16px 18px;
}

.page-about .about-review__toggle {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  text-align: left;
  font: inherit;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--paper);
  cursor: pointer;
}

.page-about .about-review__toggle::before {
  content: "";
  display: inline-block;
  width: 12px;
  height: 2px;
  margin-right: 10px;
  vertical-align: middle;
  background: var(--turf);
}

.page-about .about-review__toggle:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 4px;
}

.page-about .about-review__list {
  margin: 14px 0 0;
  padding: 0 0 0 22px;
  counter-reset: reviewstep;
  list-style: none;
}

.page-about .about-review__list li {
  position: relative;
  padding: 8px 0 8px 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
  counter-increment: reviewstep;
}

.page-about .about-review__list li::before {
  content: counter(reviewstep, decimal-leading-zero);
  position: absolute;
  left: -22px;
  top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--copper);
}

/* ---------- 合作 ---------- */
.page-about .about-partners {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.page-about .about-partners__block {
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--scale);
  background: rgba(20, 30, 51, 0.6);
}

.page-about .about-partners__block--wide {
  border-left-color: var(--copper);
  background: var(--about-copper-faint);
}

.page-about .about-partners__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(32px, 9vw, 48px);
  line-height: 1;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--turf);
}

.page-about .about-partners__num--copper {
  color: var(--copper);
}

.page-about .about-partners__unit {
  font-size: 0.36em;
  margin-left: 4px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-about .about-partners__title {
  margin: 10px 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: 0.02em;
}

.page-about .about-partners__block .body-text {
  margin: 0;
  color: var(--mist);
  font-size: 14px;
}

/* ---------- 展望 ---------- */
.page-about .about-future {
  display: grid;
  gap: 14px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-future__item {
  padding: 16px 18px;
  border-radius: 12px;
  border: 1px solid var(--line-soft);
  background: rgba(11, 18, 32, 0.6);
}

.page-about .about-future__title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-future__item .body-text {
  margin: 0;
  font-size: 14px;
  color: var(--mist);
}

.page-about .about-wide {
  margin: 34px 0 0;
}

.page-about .about-wide figcaption {
  margin-top: 10px;
}

/* ---------- 起步指引 ---------- */
.page-about .about-start {
  position: relative;
  padding: 56px 0 72px;
  background: linear-gradient(180deg, var(--night) 0%, var(--gobi) 100%);
  border-top: 1px solid var(--line-soft);
}

.page-about .about-start__title {
  margin: 0 0 24px;
  font-size: clamp(22px, 5.4vw, 32px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--paper);
}

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

.page-about .about-start__item a {
  display: block;
  padding: 18px 20px;
  background: var(--gobi);
  text-decoration: none;
  transition: background 0.22s ease, transform 0.22s ease;
}

.page-about .about-start__item a:hover,
.page-about .about-start__item a:focus-visible {
  background: var(--board);
}

.page-about .about-start__item a:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: -2px;
}

.page-about .about-start__go {
  display: block;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--turf);
}

.page-about .about-start__hint {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 动效兼容 ---------- */
@media (prefers-reduced-motion: no-preference) {
  .page-about .about-start__item a:hover {
    transform: translateX(3px);
  }
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero {
    padding: 34px 0 78px;
  }

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

  .page-about .about-stat {
    padding: 20px 18px;
  }

  .page-about .about-band {
    padding: 26px 0 30px;
  }

  .page-about .about-band__track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px 14px;
  }

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

  .page-about .about-team__points {
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

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

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

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

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

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

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-hero__stats {
    margin-top: 44px;
  }

  .page-about .about-chapter {
    padding: 84px 0;
  }

  .page-about .about-chapter__wrap {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 44px;
  }

  .page-about .about-chapter__rail {
    position: sticky;
    top: 34px;
    align-self: start;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .page-about .about-chapter__vertical {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    letter-spacing: 0.3em;
  }

  .page-about .about-chapter__intro {
    max-width: 42ch;
  }

  .page-about .about-chapter__figure {
    max-width: 400px;
    margin-left: auto;
    margin-right: 0;
  }

  .page-about .about-chapter__figure--left {
    float: left;
    max-width: 340px;
    margin: 6px 32px 20px 0;
  }

  .page-about .about-stages {
    padding-left: 34px;
    margin-top: 36px;
  }

  .page-about .about-stage__marker {
    left: -34px;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr) minmax(0, 0.72fr);
    gap: 22px;
    align-items: start;
  }

  .page-about .about-team__points {
    grid-column: auto;
    grid-template-columns: 1fr;
    gap: 18px;
    padding-top: 6px;
  }

  .page-about .about-team__figure--small {
    margin-top: 46px;
  }

  .page-about .about-manual__ver {
    flex: 1 1 0;
    min-width: 0;
  }

  .page-about .about-future {
    gap: 18px;
  }

  .page-about .about-wide {
    margin-top: 48px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-chapter__wrap {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 56px;
  }

  .page-about .about-chapter__num {
    font-size: 112px;
  }

  .page-about .about-team__figure--big {
    transform: translateY(0);
  }
}
<<<END>>>

已按标记协议输出 `about` 页的主体 HTML 与作用域 CSS。核心处理：

**结构对应搜索意图**
- 首屏用「七年，1680 场，一场一场校准下来」承担品牌与规模的第一印象，右侧三格指标（2019 / 1680 / 40 人）让访客三秒内判断平台体量。
- 横向色带承接「2019 → 随后两年 → 2023 赛季 → 今天」四个规模节点，打断纵向节奏并视觉化扩张历程。
- 六个章节（编号由铜色大号数字主导，配竖排注释）依次覆盖起步、团队、手册版本、复核机制、合作引用与未来方向。

**设计语言延续 Site Kit**
- 全页复用 `--gobi / --night / --board / --turf / --stoppage / --copper` 与 `--font-mono` 等既有变量，不新增根级选择器。
- 章节编号用 `clamp(48px, 13vw, 92px)` 完成展览级排版，正文窄栏控制在 36–42 字。
- 团队区块采用三栏错落网格（大块 34 人 / 中部三条要点 / 小块 6 人，后者下沉 46px），而不是并排等高三卡。
- 内联 SVG 绘制早班—晚班—夜班三条交叠时段带，颜色分别取自草皮绿、金属铜与补时牌橙红。

**交互与图片**
- `data-reveal` / `data-reveal-delay` 用于章节错峰显现；`data-disclosure` 用于阶段节点与复核步骤展开，内容默认可见，JS 未执行仍完整可读。
- 三张占位图分别落在首章右侧（1000×1250 纵向）、复核章节左侧浮动（1200×800）、结尾整幅横向（1600×760），均带具体中文 alt，非首屏均加 `loading="lazy"`。

**合规与品牌**
- 「宝威体育平台赛事数据」仅在首屏导语出现一次，`宝威赛场` 自然出现在首屏与末段。
- 站内链接只指向 `/`、`/apps/`、`/notes/`、`/questions/`、`/contact-us/`，未引入表单、下载或外部地址。