.page-about {
  --ab-gap: clamp(24px, 4vw, 56px);
  --ab-aside: 220px;
  background: var(--ink);
  color: var(--text);
  overflow-x: hidden;
}

.page-about .wrap {
  width: min(100% - var(--gutter) * 2, var(--wrap));
  margin-inline: auto;
}

/* ── 面包屑 ── */
.page-about .crumb {
  padding-top: clamp(20px, 3vw, 32px);
}
.page-about .crumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray);
}
.page-about .crumb__link {
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}
.page-about .crumb__link:hover,
.page-about .crumb__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--line-cyan);
  outline: none;
}
.page-about .crumb__sep {
  color: var(--gray);
  margin: 0 2px;
}

/* ── 首屏 ── */
.page-about .about-hero {
  padding: clamp(32px, 5vw, 64px) 0 clamp(48px, 6vw, 88px);
  position: relative;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}
.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ab-gap);
}
.page-about .kicker {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}
.page-about .about-hero__title {
  font-family: var(--f-head);
  font-size: clamp(34px, 7vw, 70px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--white);
  margin: 14px 0 22px;
  word-break: break-word;
}
.page-about .about-hero__lead {
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.9;
  color: var(--text-dim);
  max-width: 46ch;
  margin: 0;
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}
.page-about .about-hero__media {
  margin: 0;
}
.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }
}

/* ── 通用分节 ── */
.page-about .about-section {
  padding: clamp(44px, 6vw, 92px) 0;
  position: relative;
}
.page-about .section__title {
  font-family: var(--f-head);
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--white);
  margin: 12px 0 18px;
  word-break: break-word;
}
.page-about .section__lead {
  font-size: clamp(15px, 1.1vw, 16.5px);
  line-height: 1.85;
  color: var(--text-dim);
  max-width: 52ch;
  margin: 0;
}
.page-about .about-text {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text);
  margin: 0 0 18px;
  max-width: 46ch;
}
.page-about .about-text:last-child {
  margin-bottom: 0;
}

/* ── 起点：错位双栏 ── */
.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ab-gap);
}
.page-about .about-split__aside {
  position: relative;
  padding-left: 16px;
  border-left: 3px solid var(--orange);
}
.page-about .about-bigyear {
  font-size: clamp(52px, 12vw, 104px);
  line-height: 0.9;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: -0.04em;
  margin: 0;
}
.page-about .about-bigyear__cap {
  margin: 10px 0 0;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-about .about-quote {
  margin: 30px 0 0;
  padding: 22px 24px;
  background: var(--ink-2);
  border: 1px solid var(--line-strong);
  border-left: 4px solid var(--orange);
  box-shadow: var(--shadow-orange);
}
.page-about .about-quote p {
  margin: 0 0 12px;
  font-family: var(--f-head);
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.6;
  letter-spacing: -0.01em;
  color: var(--white);
}
.page-about .about-quote cite {
  font-style: normal;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray);
}

@media (min-width: 900px) {
  .page-about .about-split {
    grid-template-columns: var(--ab-aside) minmax(0, 1fr);
    gap: clamp(36px, 6vw, 84px);
    align-items: start;
  }
}

/* ── 版本底线：三分卡片 ── */
.page-about .about-standard {
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.page-about .about-standard__grid {
  margin-top: clamp(28px, 4vw, 48px);
}
.page-about .about-card {
  background: var(--ink);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-1);
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}
.page-about .about-card:hover,
.page-about .about-card:focus-within {
  transform: translate(-2px, -2px);
  border-color: var(--line-cyan);
  box-shadow: var(--shadow-cyan);
}
.page-about .about-card .card__label {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
}
.page-about .about-card .card__title {
  font-family: var(--f-head);
  font-size: clamp(19px, 1.9vw, 23px);
  letter-spacing: -0.01em;
  color: var(--white);
}
.page-about .about-card .card__text {
  color: var(--text-dim);
  line-height: 1.85;
}

/* ── 团队 ── */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ab-gap);
}
.page-about .about-team__media {
  margin: 0;
}
.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
}
.page-about .about-roles {
  list-style: none;
  margin: 12px 0 26px;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-about .about-role {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--indigo);
  transition: border-color var(--ease), background-color var(--ease);
}
.page-about .about-role:hover {
  border-left-color: var(--cyan);
  background: var(--ink-3);
}
.page-about .about-role__idx {
  font-size: 18px;
  font-weight: 700;
  color: var(--indigo-soft);
  line-height: 1.4;
}
.page-about .about-role__title {
  font-family: var(--f-head);
  font-size: 17px;
  letter-spacing: -0.005em;
  color: var(--white);
  margin: 0 0 4px;
}
.page-about .about-role p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

@media (min-width: 900px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(36px, 5vw, 68px);
    align-items: start;
  }
}

/* ── 里程碑 ── */
.page-about .about-milestones {
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-3) 45%, var(--ink) 100%);
  border-top: 1px solid var(--line);
}
.page-about .about-milestones__media {
  margin: clamp(28px, 4vw, 44px) 0 clamp(24px, 3vw, 36px);
}
.page-about .about-milestones__media img {
  display: block;
  width: 100%;
  height: auto;
}
.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 2px solid var(--line-strong);
}
.page-about .timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 26px 8px 26px 26px;
  border-bottom: 1px solid var(--line);
  outline: none;
  transition: background-color var(--ease);
}
.page-about .timeline__item:last-child {
  border-bottom: 0;
}
.page-about .timeline__item:hover,
.page-about .timeline__item:focus-visible {
  background: linear-gradient(90deg, rgba(57, 255, 208, 0.07) 0%, transparent 68%);
}
.page-about .timeline__item:focus-visible {
  box-shadow: inset 2px 0 0 var(--cyan);
}
.page-about .timeline__dot {
  position: absolute;
  left: -7px;
  top: 32px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
  transition: background-color var(--ease), transform var(--ease), box-shadow var(--ease);
}
.page-about .timeline__item:hover .timeline__dot,
.page-about .timeline__item:focus-visible .timeline__dot {
  background: var(--cyan);
  transform: scale(1.3);
  box-shadow: 0 0 0 6px rgba(57, 255, 208, 0.14);
}
.page-about .timeline__year {
  font-size: clamp(20px, 2.2vw, 24px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--magenta);
}
.page-about .timeline__title {
  font-family: var(--f-head);
  font-size: clamp(18px, 2vw, 22px);
  letter-spacing: -0.01em;
  color: var(--white);
  margin: 0 0 8px;
}
.page-about .timeline__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-dim);
  max-width: 62ch;
  transition: color var(--ease);
}
.page-about .timeline__item:hover .timeline__text,
.page-about .timeline__item:focus-visible .timeline__text {
  color: var(--text);
}

@media (min-width: 760px) {
  .page-about .timeline__item {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 24px;
    padding: 30px 24px 30px 36px;
  }
  .page-about .timeline__dot {
    top: 36px;
  }
}

/* ── 合作生态 ── */
.page-about .about-ecosystem__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ab-gap);
}
.page-about .about-ecosystem__intro .link-arrow {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed var(--line-cyan);
  transition: color var(--ease), border-color var(--ease);
}
.page-about .about-ecosystem__intro .link-arrow:hover,
.page-about .about-ecosystem__intro .link-arrow:focus-visible {
  color: var(--acid);
  border-bottom-color: var(--acid);
  outline: none;
}
.page-about .about-ecosystem__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-1);
}
.page-about .about-stat {
  background: var(--ink-2);
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: background-color var(--ease);
}
.page-about .about-stat:hover {
  background: var(--ink-3);
}
.page-about .about-stat__num {
  font-size: clamp(26px, 3.2vw, 38px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--orange);
}
.page-about .about-stat__label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray);
}

@media (min-width: 900px) {
  .page-about .about-ecosystem__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(36px, 5vw, 76px);
    align-items: start;
  }
}

/* ── 玩家支持 ── */
.page-about .about-support__inner {
  background: linear-gradient(180deg, var(--ink-2) 0%, var(--ink) 100%);
  border: 1px solid var(--line-strong);
  border-left: 4px solid var(--cyan);
  padding: clamp(28px, 4vw, 48px);
  box-shadow: var(--shadow-1);
}
.page-about .about-support__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ab-gap);
  margin-top: 10px;
}
.page-about .about-support__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.page-about .about-support__contacts {
  margin: 0;
  display: grid;
  gap: 14px;
  align-content: start;
}
.page-about .about-support__contacts .contact-row {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: var(--ink);
  border: 1px solid var(--line);
}
.page-about .about-support__contacts .contact-label {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray);
}
.page-about .about-support__contacts .contact-value {
  margin: 0;
  color: var(--white);
  font-size: 15px;
  line-height: 1.7;
  word-break: break-all;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}
.page-about .about-support__contacts .about-contact__text {
  font-family: var(--f-mono);
  font-size: 14.5px;
}
.page-about .copy-chip {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius);
  padding: 3px 9px;
  cursor: pointer;
  transition: background-color var(--ease), color var(--ease), border-color var(--ease);
}
.page-about .copy-chip:hover,
.page-about .copy-chip:focus-visible {
  background: var(--cyan);
  color: var(--ink);
  border-color: var(--cyan);
  outline: none;
}
.page-about .copy-chip[data-copied] {
  background: var(--acid);
  color: var(--ink);
  border-color: var(--acid);
}
.page-about .about-support__note {
  margin: 30px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line-strong);
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray);
}

@media (min-width: 900px) {
  .page-about .about-support__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(36px, 5vw, 68px);
  }
}

/* ── 动效降级 ── */
@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition: none !important;
    animation: none !important;
  }
  .page-about .about-card:hover,
  .page-about .about-card:focus-within {
    transform: none;
  }
  .page-about .timeline__item:hover .timeline__dot,
  .page-about .timeline__item:focus-visible .timeline__dot {
    transform: none;
  }
}
</main>