.page-about {
  --about-line: 3px solid var(--ink);
  --about-shadow: 6px 6px 0 var(--ink);
  --about-shadow-soft: 4px 4px 0 var(--ink);
  --about-paper: #ffffff;
  --about-hair: rgba(244, 241, 234, 0.32);
  background: var(--lime);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-about .display {
  font-size: clamp(28px, 5.2vw, 54px);
  line-height: 1.06;
  letter-spacing: -0.015em;
  font-weight: 900;
  margin: 0;
}

.page-about .about-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clay);
  margin: 0 0 10px;
}

.page-about .about-lede {
  max-width: 62ch;
  font-size: clamp(15px, 2.2vw, 17.5px);
  line-height: 1.75;
  color: var(--grey);
  margin: 14px 0 0;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(32px, 6vw, 80px) 0 clamp(46px, 8vw, 100px);
  background: var(--lime);
  border-bottom: var(--about-line);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -16%;
  width: min(720px, 80vw);
  height: 150%;
  background: var(--clay);
  transform: rotate(-7deg);
  z-index: -1;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 5vw, 56px);
  align-items: end;
}

.page-about .about-hero .display {
  font-size: clamp(34px, 8.4vw, 82px);
  line-height: 1.02;
  margin: 0 0 18px;
}

.page-about .about-hero__intro {
  max-width: 46ch;
  font-size: clamp(15px, 2.4vw, 18px);
  line-height: 1.75;
  margin: 0 0 26px;
}

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

.page-about .about-hero__panel {
  border: var(--about-line);
  background: var(--lime);
  box-shadow: var(--about-shadow);
  padding: 18px 20px 20px;
}

.page-about .about-hero__panel-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--grey);
  margin: 0;
}

.page-about .about-facts {
  margin: 12px 0 0;
}

.page-about .about-facts__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  border-top: 2px solid var(--ink);
}

.page-about .about-facts__row:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-facts dt {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--grey);
}

.page-about .about-facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* ---------- 起点 ---------- */

.page-about .about-start {
  padding: clamp(44px, 7vw, 92px) 0 clamp(40px, 6vw, 80px);
}

.page-about .about-start__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 52px);
  align-items: start;
}

.page-about .about-start__media .media-frame {
  border: var(--about-line);
  box-shadow: var(--about-shadow);
}

.page-about .about-start__body p {
  max-width: 62ch;
  font-size: clamp(15px, 2.1vw, 17px);
  line-height: 1.8;
  margin: 16px 0 0;
}

.page-about .about-start__body .display {
  margin-bottom: 4px;
}

.page-about .about-note {
  border-top: 2px dashed var(--grey);
  margin-top: 20px;
  padding-top: 10px;
}

.page-about .about-note__summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  cursor: pointer;
  list-style: none;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--clay);
}

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

.page-about .about-note__summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
}

.page-about .about-note[open] .about-note__summary::after {
  content: "−";
}

.page-about .about-note p {
  margin: 6px 0 0;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--grey);
}

/* ---------- 几何分隔带 ---------- */

.page-about .about-rule {
  height: 12px;
  border-top: var(--about-line);
  border-bottom: var(--about-line);
  background: repeating-linear-gradient(135deg, var(--ink) 0 12px, var(--lime) 12px 24px);
}

/* ---------- 三个阶段 ---------- */

.page-about .about-stages-section {
  padding: clamp(46px, 7vw, 96px) 0 clamp(44px, 7vw, 88px);
  background:
    linear-gradient(180deg, rgba(31, 138, 91, 0.06), rgba(31, 138, 91, 0) 42%),
    var(--lime);
}

.page-about .about-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(22px, 3.6vw, 38px) 0 clamp(22px, 3.6vw, 36px);
}

.page-about .filter-btn {
  min-height: 44px;
  padding: 0 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  border: 2px solid var(--ink);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}

.page-about .filter-btn[aria-pressed="true"] {
  background: var(--ink);
  color: var(--lime);
  border-color: var(--ink);
}

.page-about .filter-btn[aria-pressed="true"]::before {
  content: "▍";
  color: var(--cyan);
  margin-right: 6px;
}

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

.page-about .about-stage {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px 34px;
  border-top: var(--about-line);
  padding: clamp(20px, 3.6vw, 34px) 0 clamp(28px, 4.6vw, 46px);
}

.page-about .about-stage:nth-child(3) {
  border-bottom: var(--about-line);
}

.page-about .about-stage__side {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .about-stage__year {
  font-family: var(--font-mono);
  font-size: clamp(24px, 5.4vw, 46px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--clay);
}

.page-about .about-stage__kicker {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--grey);
  writing-mode: vertical-rl;
  display: inline-block;
  height: 5.6em;
}

.page-about .about-stage__card {
  position: relative;
  border: var(--about-line);
  background: var(--about-paper);
  box-shadow: var(--about-shadow-soft);
  padding: clamp(18px, 3vw, 30px);
}

.page-about .about-stage__title {
  font-size: clamp(19px, 3vw, 26px);
  font-weight: 800;
  line-height: 1.3;
  margin: 0 0 12px;
}

.page-about .about-stage__card p {
  max-width: 62ch;
  font-size: clamp(14.5px, 2vw, 16.5px);
  line-height: 1.8;
  margin: 0;
}

.page-about .about-stage__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 16px !important;
  font-size: 13.5px !important;
  color: var(--grey);
}

.page-about [data-filter-item][data-hidden="true"] {
  display: none;
}

.page-about [data-filter-item][data-enter="true"] {
  animation: about-fade 320ms ease both;
}

@keyframes about-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-filter-item][data-enter="true"] {
    animation: none;
  }
}

/* ---------- 团队 ---------- */

.page-about .about-team {
  background: var(--green-deep);
  color: var(--lime);
  padding: clamp(46px, 7vw, 92px) 0;
  border-top: var(--about-line);
  border-bottom: var(--about-line);
}

.page-about .about-team .display {
  color: var(--lime);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4.6vw, 54px);
  align-items: start;
}

.page-about .about-team__body > p {
  max-width: 56ch;
  font-size: clamp(15px, 2.1vw, 17px);
  line-height: 1.8;
  margin: 16px 0 0;
  color: rgba(244, 241, 234, 0.9);
}

.page-about .about-team__list {
  list-style: none;
  margin: clamp(22px, 3.4vw, 34px) 0 0;
  padding: 0;
}

.page-about .about-team__item {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num label"
    "num desc";
  gap: 4px 16px;
  align-items: center;
  padding: 16px 0;
  border-top: 2px solid var(--about-hair);
}

.page-about .about-team__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--whistle);
  min-width: 2.4ch;
}

.page-about .about-team__label {
  grid-area: label;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.page-about .about-team__desc {
  grid-area: desc;
  font-size: 13.5px;
  color: rgba(244, 241, 234, 0.78);
}

.page-about .about-team__media .media-frame {
  border: var(--about-line);
  box-shadow: 6px 6px 0 var(--clay);
}

.page-about .about-team__media .media-note {
  color: rgba(244, 241, 234, 0.75);
}

/* ---------- 服务地区 ---------- */

.page-about .about-region {
  padding: clamp(44px, 7vw, 92px) 0;
  background: var(--lime);
}

.page-about .about-region__panel {
  position: relative;
  border: var(--about-line);
  background: var(--about-paper);
  box-shadow: var(--about-shadow);
  padding: clamp(22px, 4vw, 46px);
}

.page-about .about-region__panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 8px;
  height: 100%;
  background: var(--clay);
}

.page-about .about-region__panel p {
  max-width: 64ch;
  font-size: clamp(15px, 2.1vw, 17px);
  line-height: 1.8;
  margin: 16px 0 0;
}

.page-about .about-region__panel .btn {
  margin-top: 24px;
}

/* ---------- 球场合作 ---------- */

.page-about .about-fields {
  padding: 0 0 clamp(46px, 7vw, 92px);
  background: var(--lime);
}

.page-about .about-fields__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 48px);
  margin-top: clamp(22px, 3.6vw, 36px);
  align-items: center;
}

.page-about .about-fields__media .media-frame {
  border: var(--about-line);
  box-shadow: var(--about-shadow);
}

.page-about .about-fields__body p {
  max-width: 58ch;
  font-size: clamp(15px, 2.1vw, 17px);
  line-height: 1.8;
  margin: 0 0 16px;
}

.page-about .about-fields__body p:last-child {
  margin-bottom: 0;
  padding-left: 16px;
  border-left: 6px solid var(--green);
  color: var(--grey);
  font-size: 15px;
}

/* ---------- 数字 ---------- */

.page-about .about-numbers {
  background: var(--ink);
  color: var(--lime);
  padding: clamp(46px, 7vw, 92px) 0;
  border-top: var(--about-line);
}

.page-about .about-numbers .display {
  color: var(--lime);
}

.page-about .about-numbers__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .about-number {
  padding: 22px 4px 24px;
  border-top: 2px solid var(--about-hair);
}

.page-about .about-number__num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 4.6vw, 42px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0;
  color: var(--whistle);
}

.page-about .about-number:nth-child(even) .about-number__num {
  color: var(--cyan);
}

.page-about .about-number__label {
  font-size: 15px;
  font-weight: 800;
  margin: 10px 0 0;
}

.page-about .about-number__desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(244, 241, 234, 0.72);
  margin: 6px 0 0;
}

/* ---------- 结尾路径 ---------- */

.page-about .about-cta {
  background: var(--clay);
  color: var(--lime);
  padding: clamp(42px, 7vw, 84px) 0 clamp(36px, 5vw, 60px);
  border-top: var(--about-line);
}

.page-about .about-cta .display {
  color: var(--lime);
}

.page-about .about-cta__lede {
  max-width: 54ch;
  font-size: clamp(15px, 2.1vw, 17px);
  line-height: 1.75;
  margin: 14px 0 0;
  color: rgba(244, 241, 234, 0.92);
}

.page-about .about-cta__links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: clamp(22px, 3.6vw, 34px);
  border-top: 2px solid var(--about-hair);
}

.page-about .about-cta__link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 44px;
  padding: 15px 8px;
  border-bottom: 2px solid var(--about-hair);
  color: var(--lime);
  text-decoration: none;
}

.page-about .about-cta__link:hover,
.page-about .about-cta__link:focus-visible {
  background: var(--clay-deep);
}

.page-about .about-cta__name {
  font-size: 17px;
  font-weight: 800;
}

.page-about .about-cta__hint {
  font-size: 13px;
  color: rgba(244, 241, 234, 0.78);
}

.page-about .about-cta__top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--lime);
  text-decoration: none;
  border-bottom: 2px solid var(--lime);
}

.page-about .about-cta__top::before {
  content: "↑";
  font-size: 16px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-about .about-numbers__grid {
    grid-template-columns: repeat(2, 1fr);
    column-gap: clamp(20px, 3vw, 40px);
  }
}

@media (min-width: 880px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(230px, 0.8fr);
  }

  .page-about .about-start__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  }

  .page-about .about-start__media {
    order: 0;
  }

  .page-about .about-stage {
    grid-template-columns: minmax(180px, 24%) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-stage:nth-child(2) {
    padding-left: clamp(0px, 6vw, 84px);
  }

  .page-about .about-stage:nth-child(3) {
    padding-left: clamp(0px, 2.6vw, 36px);
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  }

  .page-about .about-fields__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  }

  .page-about .about-cta__links {
    grid-template-columns: repeat(2, 1fr);
    column-gap: clamp(16px, 3vw, 36px);
  }
}

@media (min-width: 1080px) {
  .page-about .about-numbers__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about #about-stages {
    scroll-margin-top: 96px;
  }
}
<<<END>>>