.page-about {
  --ab-line: rgba(53, 224, 208, 0.18);
  --ab-line-soft: rgba(157, 184, 174, 0.22);
  --ab-gap: clamp(40px, 7vw, 88px);
  background: var(--ink-800);
  color: var(--paper);
  overflow-x: clip;
}

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

.page-about section {
  padding-block: var(--ab-gap);
}

.page-about h2 {
  font-family: var(--font-title);
  font-size: clamp(24px, 4.8vw, 40px);
  line-height: 1.22;
  letter-spacing: 0.04em;
  font-weight: 800;
  margin: 0 0 14px;
}

.page-about .about-link {
  color: var(--cyan-500);
  text-decoration: underline;
  text-decoration-color: rgba(53, 224, 208, 0.45);
  text-underline-offset: 4px;
  transition: color var(--dur) var(--ease);
}

.page-about .about-link:hover {
  color: var(--gold-300);
}

.page-about .about-link:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 3px;
  border-radius: 3px;
}

/* 面包屑 */
.page-about .about-crumb {
  padding-top: clamp(18px, 3vw, 30px);
  padding-bottom: 4px;
}

.page-about .about-crumb .breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

/* 开篇分屏 */
.page-about .about-open {
  padding-top: clamp(20px, 3vw, 36px);
}

.page-about .about-open__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-open__title {
  font-family: var(--font-title);
  font-size: clamp(30px, 7.4vw, 58px);
  line-height: 1.08;
  letter-spacing: 0.05em;
  font-weight: 900;
  margin: 12px 0 16px;
}

.page-about .about-open__title span {
  display: block;
  margin-top: 0.18em;
  font-size: 0.66em;
  letter-spacing: 0.07em;
  color: var(--cyan-500);
}

.page-about .about-open__lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--sage);
  max-width: 34ch;
}

.page-about .about-open__stamp {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--sage);
}

.page-about .about-open__figure {
  margin: 0 0 22px;
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-about .about-open__figure img {
  width: 100%;
  object-fit: cover;
  aspect-ratio: 7 / 4;
}

.page-about .about-open__cap {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--sage);
}

.page-about .about-open__text p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.85;
}

.page-about .about-open__text p:first-child {
  font-size: 17px;
  color: var(--paper);
  padding-left: 16px;
  border-left: 3px solid var(--cyan-600);
}

/* 页内目录 */
.page-about .about-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--ab-line);
}

.page-about .about-jump__link {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border: 1px solid var(--ab-line);
  border-radius: var(--pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan-100);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-about .about-jump__link:hover {
  border-color: var(--cyan-500);
  color: var(--ink-900);
  background: var(--cyan-500);
}

.page-about .about-jump__link:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 3px;
}

/* 数据带 */
.page-about .about-figures {
  padding-block: clamp(28px, 4vw, 48px);
  border-block: 1px solid var(--ab-line);
}

.page-about .about-figures__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ab-line-soft);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .about-fig {
  background: var(--ink-800);
  padding: 20px 16px;
}

.page-about .about-fig__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 5.6vw, 40px);
  line-height: 1.1;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--gold-500);
}

.page-about .about-fig__num small {
  font-size: 0.48em;
  margin-left: 2px;
  color: var(--gold-300);
}

.page-about .about-fig__label {
  margin: 8px 0 4px;
  font-size: 14px;
  font-weight: 600;
}

.page-about .about-fig__note {
  margin: 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--sage);
}

/* 结构小标题 */
.page-about .about-sec__head {
  max-width: 720px;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-about .about-sec__intro {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--sage);
}

/* 版本时间轴 */
.page-about .about-tl {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan-500), rgba(53, 224, 208, 0.06));
  transform: skewX(4deg);
  transform-origin: top center;
}

.page-about .about-tl__item {
  position: relative;
  padding-left: 38px;
  padding-bottom: 18px;
}

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

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 20px;
  width: 14px;
  height: 14px;
  background: var(--cyan-500);
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  box-shadow: 0 0 0 4px var(--ink-800);
}

.page-about .about-tl__item:last-child::before {
  background: var(--gold-500);
}

.page-about .about-tl__card {
  background: var(--ink-700);
  border: 1px solid var(--ab-line);
  border-radius: var(--r-md);
  padding: 18px 20px;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-tl__item:hover .about-tl__card,
.page-about .about-tl__item:focus-within .about-tl__card {
  transform: translateX(4px);
  border-color: var(--gold-500);
}

.page-about .about-tl__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.page-about .about-tl__ver {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan-500);
}

.page-about .about-tl__title {
  font-family: var(--font-title);
  font-size: 17px;
  line-height: 1.45;
  letter-spacing: 0.03em;
  margin: 10px 0 8px;
}

.page-about .about-tl__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--sage);
}

/* 团队 */
.page-about .about-team__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-team__figure {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-about .about-team__figure img {
  width: 100%;
  object-fit: cover;
  aspect-ratio: 10 / 7;
}

.page-about .about-team__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-about .about-team__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 2px 14px;
  padding: 18px 0;
  border-top: 1px solid var(--ab-line);
}

.page-about .about-team__item:last-child {
  border-bottom: 1px solid var(--ab-line);
}

.page-about .about-team__no {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.9;
  letter-spacing: 0.04em;
  color: var(--cyan-500);
}

.page-about .about-team__name {
  font-family: var(--font-title);
  font-size: 17px;
  letter-spacing: 0.03em;
  margin: 0 0 6px;
}

.page-about .about-team__desc {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--sage);
}

.page-about .about-team__tag {
  grid-column: 2;
  justify-self: start;
}

/* 维护节奏 */
.page-about .about-rhythm__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-rhythm__step {
  position: relative;
  background: var(--ink-700);
  border: 1px solid var(--ab-line);
  border-radius: var(--r-md);
  padding: 20px 18px 24px;
  overflow: hidden;
}

.page-about .about-rhythm__step::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan-500), rgba(53, 224, 208, 0));
}

.page-about .about-rhythm__when {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold-500);
}

.page-about .about-rhythm__name {
  font-family: var(--font-title);
  font-size: 18px;
  letter-spacing: 0.03em;
  margin: 8px 0 8px;
}

.page-about .about-rhythm__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--sage);
}

/* 合作生态 */
.page-about .about-partners__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-partners__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-about .about-partners__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--ab-line-soft);
  font-size: 14px;
  line-height: 1.75;
}

.page-about .about-partners__item strong {
  color: var(--cyan-100);
  font-family: var(--font-title);
  letter-spacing: 0.03em;
}

.page-about .about-partners__item span {
  color: var(--sage);
}

.page-about .about-partners__note {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--sage);
}

.page-about .about-partners__figure {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-about .about-partners__figure img {
  width: 100%;
  object-fit: cover;
  aspect-ratio: 12 / 7;
}

/* 玩家承诺 */
.page-about .about-values {
  background: linear-gradient(180deg, rgba(53, 224, 208, 0) 0%, rgba(53, 224, 208, 0.07) 100%);
}

.page-about .about-values__quote {
  margin: 0 0 clamp(22px, 4vw, 34px);
  padding: 4px 0 4px 20px;
  border-left: 4px solid var(--gold-500);
  font-family: var(--font-title);
  font-size: clamp(20px, 3.6vw, 30px);
  line-height: 1.45;
  letter-spacing: 0.04em;
  font-weight: 700;
}

.page-about .about-values__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-values__item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 16px;
  background: var(--ink-700);
  border: 1px solid var(--ab-line);
  border-radius: var(--r-sm);
  font-size: 14.5px;
  line-height: 1.7;
}

.page-about .about-values__item .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  color: var(--gold-500);
  flex: none;
}

.page-about .about-values__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 4vw, 36px);
}

/* 桌面分屏 */
@media (min-width: 900px) {
  .page-about .about-open__grid {
    grid-template-columns: minmax(0, 30fr) minmax(0, 70fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-about .about-open__rail {
    position: sticky;
    top: 96px;
  }

  .page-about .about-open__title {
    font-size: clamp(38px, 3.6vw, 58px);
  }

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

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 42fr) minmax(0, 58fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 56fr) minmax(0, 44fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: center;
  }

  .page-about .about-partners__figure {
    order: 2;
  }

  .page-about .about-tl__item {
    padding-left: 52px;
    padding-bottom: 22px;
  }
}

@media (min-width: 820px) {
  .page-about .about-rhythm__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-values__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 24px;
  }

  .page-about .about-partners__item {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 4px 16px;
    align-items: baseline;
  }
}

@media (max-width: 420px) {
  .page-about .about-open__text p:first-child {
    padding-left: 12px;
  }

  .page-about .about-jump__link {
    font-size: 11px;
    padding: 6px 11px;
  }

  .page-about .about-tl__item {
    padding-left: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-tl__card,
  .page-about .about-jump__link,
  .page-about .about-link {
    transition: none;
  }

  .page-about .about-tl__item:hover .about-tl__card,
  .page-about .about-tl__item:focus-within .about-tl__card {
    transform: none;
  }
}
<<<END>>>