.page-about {
  --about-axis: rgba(217, 178, 106, .34);
  --about-cut: 16px;
  --about-gap: clamp(22px, 3.4vw, 52px);
  color: var(--text);
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding-top: clamp(18px, 3vw, 34px);
  padding-bottom: clamp(10px, 1.6vw, 18px);
}
.page-about .about-crumbs .crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-about .about-crumbs .crumbs > * + *::before {
  content: "/";
  margin-right: 10px;
  color: var(--line-strong);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-bottom: clamp(30px, 5vw, 66px);
}
.page-about .about-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
  align-items: center;
}
.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--step-h1);
  line-height: 1.12;
  letter-spacing: -.01em;
  margin: .28em 0 .5em;
  max-width: 15em;
  text-wrap: balance;
}
.page-about .about-hero__lede {
  max-width: 44ch;
  color: var(--text-soft);
}
.page-about .about-hero__marks {
  list-style: none;
  margin: clamp(26px, 3.6vw, 42px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: clamp(18px, 3vw, 40px);
}
.page-about .about-mark {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 14px;
  border-left: 2px solid var(--c-table);
}
.page-about .about-mark__num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 700;
  color: var(--c-amber);
  line-height: 1;
}
.page-about .about-mark__label {
  font-size: .86rem;
  color: var(--text-mute);
  letter-spacing: .02em;
}
.page-about .about-hero__media {
  margin: 0;
}

/* ---------- 章节跳转 ---------- */
.page-about .about-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  padding: 12px clamp(12px, 2vw, 20px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(31, 107, 74, .16), transparent 70%);
}
.page-about .about-jump__link {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .04em;
  color: var(--text-mute);
  text-decoration: none;
  padding: 6px 12px;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
  transition: color .25s var(--ease-shuffle), border-color .25s var(--ease-shuffle), background-color .25s var(--ease-shuffle);
}
.page-about .about-jump__link:hover,
.page-about .about-jump__link:focus-visible {
  color: var(--c-ivory);
  border-color: var(--c-table);
  background: rgba(31, 107, 74, .3);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline__head {
  max-width: 62ch;
}
.page-about .timeline {
  position: relative;
  list-style: none;
  margin: clamp(30px, 4.5vw, 56px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(22px, 3vw, 34px);
}
.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--about-axis) 10%, var(--about-axis) 90%, transparent);
}
.page-about .timeline__node {
  position: relative;
  padding-left: 32px;
}
.page-about .timeline__marker {
  position: absolute;
  left: 0;
  top: 12px;
  width: 13px;
  height: 13px;
  transform: rotate(45deg);
  border: 1px solid var(--c-amber);
  background: var(--c-deep);
}
.page-about .timeline__panel {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: clamp(18px, 2.4vw, 28px);
  clip-path: polygon(0 0, calc(100% - var(--about-cut)) 0, 100% var(--about-cut), 100% 100%, var(--about-cut) 100%, 0 calc(100% - var(--about-cut)));
}
.page-about .timeline__year {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin: 0 0 10px;
}
.page-about .timeline__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--step-h3);
  line-height: 1.35;
  margin: 0 0 10px;
}
.page-about .timeline__panel p:last-child {
  margin: 0;
  color: var(--text-soft);
  font-size: var(--step-body);
}

/* ---------- 玩法版图 ---------- */
.page-about .about-map__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
}
.page-about .about-map__copy .section__title {
  margin-bottom: .5em;
}
.page-about .about-map__list {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
}
.page-about .about-map__list li {
  font-family: var(--font-body);
  font-size: .96rem;
  padding: 11px 14px 11px 26px;
  position: relative;
  background: rgba(11, 30, 45, .5);
  color: var(--text-soft);
}
.page-about .about-map__list li::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 50%;
  width: 6px;
  height: 6px;
  transform: translateY(-50%) rotate(45deg);
  background: var(--c-table);
}
.page-about .about-map__note {
  margin: clamp(20px, 2.6vw, 28px) 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--c-amber);
  color: var(--text-mute);
  font-size: .95rem;
}
.page-about .about-map__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  align-content: start;
}
.page-about .about-stat {
  padding: clamp(16px, 2.2vw, 24px);
  background: var(--surface-deep);
  border-top: 1px solid var(--line);
}
.page-about .about-stat .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 2.4vw, 1.85rem);
  font-weight: 700;
  color: var(--c-ivory);
  display: block;
}
.page-about .about-stat .stat__label {
  display: block;
  margin-top: 6px;
  font-size: .84rem;
  letter-spacing: .03em;
  color: var(--text-mute);
}
.page-about .about-map__stats .about-stat:nth-child(1) .stat__value { color: var(--c-amber); }
.page-about .about-map__stats .about-stat:nth-child(4) .stat__value { color: var(--c-gold); }
.page-about .about-map__foot {
  grid-column: 1 / -1;
  margin: 0;
  padding: clamp(16px, 2.2vw, 22px);
  background: rgba(31, 107, 74, .18);
  border-left: 2px solid var(--c-table);
  font-size: .92rem;
  color: var(--text-soft);
}

/* ---------- 团队 ---------- */
.page-about .about-team__head {
  max-width: 62ch;
}
.page-about .about-team__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
  margin-top: clamp(30px, 4vw, 52px);
  align-items: start;
}
.page-about .about-team__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  counter-reset: team;
}
.page-about .about-team__item {
  position: relative;
  padding: clamp(18px, 2.3vw, 26px) clamp(18px, 2.3vw, 26px) clamp(18px, 2.3vw, 26px) 58px;
  background: linear-gradient(90deg, rgba(18, 58, 58, .78), rgba(11, 30, 45, .42));
  counter-increment: team;
}
.page-about .about-team__item::before {
  content: counter(team, decimal-leading-zero);
  position: absolute;
  left: clamp(18px, 2.3vw, 26px);
  top: clamp(20px, 2.4vw, 28px);
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--c-amber);
  letter-spacing: .06em;
}
.page-about .about-team__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--step-h3);
  margin: 0 0 8px;
}
.page-about .about-team__item p {
  margin: 0;
  color: var(--text-soft);
  font-size: .97rem;
}
.page-about .about-team__media {
  margin: 0;
}

/* ---------- 荣誉 ---------- */
.page-about .about-honors__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
  align-items: start;
}
.page-about .about-honors__seals {
  list-style: none;
  margin: clamp(26px, 3.4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-about .about-seal {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: center;
  padding: 16px 20px;
  background: rgba(11, 30, 45, .58);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--c-red);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}
.page-about .about-seal__year {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--c-red);
  letter-spacing: .04em;
}
.page-about .about-seal__title {
  font-size: 1rem;
  color: var(--c-ivory);
}
.page-about .about-honors__note {
  margin: clamp(22px, 3vw, 32px) 0 0;
  color: var(--text-mute);
  font-size: .95rem;
  max-width: 46ch;
}
.page-about .about-honors__media {
  margin: 0;
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding-top: clamp(40px, 6vw, 78px);
  padding-bottom: clamp(48px, 7vw, 96px);
}
.page-about .about-next__inner {
  position: relative;
  padding: clamp(28px, 4.4vw, 56px) clamp(22px, 3.4vw, 46px);
  background: linear-gradient(115deg, rgba(31, 107, 74, .34), rgba(11, 30, 45, .1) 62%);
  border-top: 1px solid var(--line-strong);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
}
.page-about .about-next__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--step-h2);
  line-height: 1.2;
  margin: .2em 0 .4em;
}
.page-about .about-next__text {
  max-width: 48ch;
  color: var(--text-soft);
  margin: 0 0 clamp(22px, 3vw, 32px);
}
.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 图片通用修正 ---------- */
.page-about .media-frame img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-map__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-team__body {
    grid-template-columns: 1.35fr 1fr;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__inner {
    grid-template-columns: 7fr 5fr;
    gap: clamp(32px, 4.5vw, 72px);
  }
  .page-about .about-map__grid {
    grid-template-columns: 7fr 4fr;
  }
  .page-about .about-honors__grid {
    grid-template-columns: 7fr 4fr;
  }
  .page-about .about-map__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-about .timeline {
    gap: 0;
  }
  .page-about .timeline::before {
    left: 50%;
    top: 6px;
    bottom: 6px;
    margin-left: -.5px;
  }
  .page-about .timeline__node {
    width: 50%;
    padding-left: 0;
    padding-right: 0;
    padding-bottom: clamp(24px, 3vw, 38px);
  }
  .page-about .timeline__node:last-child {
    padding-bottom: 0;
  }
  .page-about .timeline__node:nth-child(odd) {
    padding-right: 40px;
    text-align: right;
  }
  .page-about .timeline__node:nth-child(odd) .timeline__marker {
    left: auto;
    right: -7px;
  }
  .page-about .timeline__node:nth-child(even) {
    margin-left: 50%;
    padding-left: 40px;
  }
  .page-about .timeline__node:nth-child(even) .timeline__marker {
    left: -7px;
  }
  .page-about .timeline__marker {
    top: 14px;
  }
}