.page-about {
  --about-gap: clamp(18px, 3vw, 30px);
  --about-ink: rgba(138, 106, 42, 0.45);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  padding-top: calc(var(--header-h) + 16px);
}

.page-about .breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--mist);
}

.page-about .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin: 0 10px;
  color: var(--sand);
}

.page-about .breadcrumbs__item a {
  color: var(--ice);
  text-decoration: none;
  transition: color 200ms var(--ease);
}

.page-about .breadcrumbs__item a:hover,
.page-about .breadcrumbs__item a:focus-visible {
  color: var(--gold);
  text-decoration: underline;
}

/* ---------- 封面 ---------- */
.page-about .about-cover {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 5vw, 44px);
  padding-block: clamp(26px, 5vw, 48px) clamp(34px, 6vw, 70px);
}

.page-about .about-cover__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 8.4vw, 62px);
  line-height: 1.07;
  letter-spacing: -0.02em;
  color: var(--white);
  max-width: 15em;
}

.page-about .about-cover__lede {
  margin: 22px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-cover__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13.5px;
  color: var(--mist);
}

.page-about .about-cover__facts li {
  position: relative;
  padding-left: 16px;
}

.page-about .about-cover__facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 1px;
  background: var(--gold);
}

.page-about .about-cover__aside {
  border-top: 1px solid var(--about-ink);
  padding-top: 22px;
  display: grid;
  gap: 20px;
}

.page-about .vertical-note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--gold);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-stats__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 6vw, 30px);
  line-height: 1.1;
  color: var(--gold);
  letter-spacing: -0.01em;
}

.page-about .about-stats__unit {
  font-size: 0.55em;
  margin-left: 3px;
}

.page-about .about-stats__label {
  display: block;
  margin-top: 5px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-about .about-cover {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 300px);
    align-items: start;
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .about-cover__aside {
    border-top: 0;
    border-left: 1px solid var(--about-ink);
    padding-top: 4px;
    padding-left: 26px;
  }

  .page-about .vertical-note {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    letter-spacing: 0.4em;
    margin-bottom: 8px;
  }

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

/* ---------- 章节抬头 ---------- */
.page-about .section-head {
  max-width: 44em;
}

.page-about .section-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(25px, 5vw, 38px);
  line-height: 1.2;
  letter-spacing: -0.012em;
  color: var(--white);
}

.page-about .section-note {
  margin: 14px 0 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .prose {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline__canvas {
  position: relative;
  margin-top: clamp(28px, 5vw, 46px);
  border: 1px solid var(--line-cool);
  background: linear-gradient(180deg, var(--night) 0%, var(--abyss) 100%);
  overflow: hidden;
}

.page-about .about-timeline__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.24;
  pointer-events: none;
}

.page-about .about-track {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 30px 22px 30px 46px;
  list-style: none;
}

.page-about .about-track::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 24px;
  bottom: 24px;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--gold) 10%, var(--sand) 90%, transparent);
}

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

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

.page-about .about-track__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 8px;
  width: 9px;
  height: 9px;
  background: var(--abyss);
  border: 1px solid var(--gold);
  transform: rotate(45deg);
}

.page-about .about-track__year {
  display: block;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .about-track__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.4vw, 20px);
  line-height: 1.45;
  color: var(--white);
}

.page-about .about-track__text {
  margin: 8px 0 0;
  max-width: 36em;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-about .about-track {
    padding: 44px 44px 44px 210px;
  }

  .page-about .about-track::before {
    left: 150px;
    top: 38px;
    bottom: 38px;
  }

  .page-about .about-track__item {
    padding-bottom: 38px;
  }

  .page-about .about-track__item::before {
    left: -64px;
    top: 6px;
  }

  .page-about .about-track__year {
    position: absolute;
    left: -200px;
    top: 0;
    width: 120px;
    text-align: right;
    font-size: 15px;
  }

  .page-about .about-track__title {
    margin-top: 0;
    font-size: 21px;
  }
}

/* ---------- 内容团队 ---------- */
.page-about .about-editorial__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 52px);
  align-items: start;
}

.page-about .about-editorial__metrics {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 28px 0 0;
  padding: 22px 0 0;
  list-style: none;
  border-top: 1px solid var(--about-ink);
  font-size: 14.5px;
  color: var(--mist);
}

.page-about .about-editorial__metrics .mono {
  display: inline-block;
  min-width: 3.4em;
  font-family: var(--font-mono);
  font-size: 17px;
  color: var(--gold);
  margin-right: 10px;
}

.page-about .about-editorial__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-cool);
}

.page-about .about-editorial__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .media__glow {
  position: absolute;
  inset: -1px;
  pointer-events: none;
  background: radial-gradient(120% 80% at 15% 0%, rgba(242, 193, 78, 0.16), transparent 62%),
    radial-gradient(100% 70% at 100% 100%, rgba(226, 62, 140, 0.14), transparent 60%);
}

.page-about .media__caption {
  margin: 0;
  padding: 12px 16px 14px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--mist);
  background: var(--panel);
  border-top: 1px solid var(--line-cool);
}

@media (min-width: 900px) {
  .page-about .about-editorial__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
}

/* ---------- 岗位标签页 ---------- */
.page-about .about-roles__tabs {
  margin-top: clamp(26px, 4vw, 40px);
}

.page-about .tablist {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 0;
  border-bottom: 1px solid var(--line-cool);
}

.page-about .tab {
  appearance: none;
  background: transparent;
  border: 0;
  padding: 12px 20px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--mist);
  cursor: pointer;
  transition: color 220ms var(--ease);
}

.page-about .tab:hover {
  color: var(--gold-light);
}

.page-about .tab[aria-selected="true"] {
  color: var(--gold);
}

.page-about .tab:focus-visible {
  outline: 1px solid var(--ice);
  outline-offset: 2px;
}

.page-about .tablist__ink {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  transition: transform 300ms var(--ease), width 300ms var(--ease);
}

.page-about .tab-panel {
  padding: 26px 0 0;
  max-width: 44em;
}

.page-about .tab-panel[hidden] {
  display: none;
}

.page-about .about-roles__lead {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.8vw, 22px);
  font-weight: 800;
  line-height: 1.45;
  color: var(--white);
}

.page-about .about-roles__body {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-roles__link {
  margin: 18px 0 0;
}

.page-about .card__link {
  display: inline-block;
  font-size: 14px;
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 212, 255, 0.4);
  padding-bottom: 2px;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-about .card__link:hover,
.page-about .card__link:focus-visible {
  color: var(--gold);
  border-color: var(--gold);
}

/* ---------- 客服两步 ---------- */
.page-about .about-flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(26px, 4vw, 40px);
  background: var(--line-cool);
  border: 1px solid var(--line-cool);
}

.page-about .about-flow__step {
  background: var(--panel);
  padding: clamp(22px, 4vw, 30px);
}

.page-about .about-flow__num {
  display: inline-block;
  font-size: 12.5px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .about-flow__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.8vw, 22px);
  font-weight: 800;
  line-height: 1.4;
  color: var(--white);
}

.page-about .about-flow__text {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-flow__link {
  margin: 16px 0 0;
}

@media (min-width: 800px) {
  .page-about .about-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 三类栏目 ---------- */
.page-about .about-lanes {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(26px, 4vw, 40px);
  background: var(--line-cool);
  border: 1px solid var(--line-cool);
}

.page-about .about-lane {
  background: var(--night);
  padding: clamp(22px, 3.4vw, 30px);
  transition: background 240ms var(--ease);
}

.page-about .about-lane:hover {
  background: var(--panel);
}

.page-about .about-lane__index {
  display: inline-block;
  font-size: 12.5px;
  letter-spacing: 0.2em;
  color: var(--magenta);
}

.page-about .about-lane__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.8vw, 21px);
  font-weight: 800;
  line-height: 1.42;
  color: var(--white);
}

.page-about .about-lane__text {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-lane__link {
  margin: 18px 0 0;
}

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

/* ---------- 覆盖范围与协作 ---------- */
.page-about .about-reach {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 52px);
  align-items: center;
}

.page-about .about-partners {
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--about-ink);
}

.page-about .about-partners__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--white);
}

.page-about .about-partners__text {
  margin: 12px 0 0;
  max-width: 34em;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-reach__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-cool);
}

.page-about .about-reach__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-about .about-reach {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
}

/* ---------- 运营准则 ---------- */
.page-about .about-principles {
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--about-ink);
}

.page-about .about-principle {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-cool);
}

.page-about .about-principle__key {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  color: var(--gold);
  letter-spacing: 0.01em;
}

.page-about .about-principle__text {
  margin: 0;
  max-width: 44em;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

@media (min-width: 820px) {
  .page-about .about-principle {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 34px;
    align-items: baseline;
    padding: 24px 0;
  }
}

/* ---------- 收束 ---------- */
.page-about .about-cta {
  padding-bottom: clamp(48px, 8vw, 90px);
}

.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  align-items: center;
  padding: clamp(28px, 5vw, 48px);
  border: 1px solid var(--about-ink);
  background: linear-gradient(135deg, rgba(19, 28, 60, 0.96) 0%, rgba(10, 18, 48, 0.96) 55%, rgba(5, 10, 28, 0.98) 100%);
  position: relative;
  overflow: hidden;
}

.page-about .about-cta__inner::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(242, 193, 78, 0.2), transparent 68%);
  pointer-events: none;
}

.page-about .about-cta__lede {
  margin: 14px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-cta__actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

@media (min-width: 860px) {
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 44px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .tablist__ink,
  .page-about .about-lane,
  .page-about .card__link,
  .page-about .breadcrumbs__item a {
    transition: none;
  }
}