.page-about {
  --about-rail: rgba(154, 164, 178, 0.16);
  --about-rail-strong: rgba(57, 255, 136, 0.42);
  --about-panel-soft: rgba(17, 24, 39, 0.72);
  --about-card-shadow: 0 20px 48px -38px rgba(0, 0, 0, 0.95);
}

/* ---------- 通用页内元素 ---------- */
.page-about .about-topbar {
  padding-top: 28px;
  padding-bottom: 4px;
}

.page-about .about-head {
  max-width: 780px;
  margin-bottom: 40px;
}

.page-about .about-head .sw-section__title {
  margin-top: 10px;
}

.page-about .about-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--sw-line);
  border-radius: var(--sw-r-lg);
  background: var(--sw-panel);
}

.page-about .about-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(7, 9, 15, 0) 45%, rgba(7, 9, 15, 0.62) 100%),
    radial-gradient(120% 80% at 88% 0%, rgba(46, 125, 255, 0.16), transparent 62%);
}

.page-about .about-frame--hero {
  aspect-ratio: 14 / 9;
}

.page-about .about-frame--team,
.page-about .about-frame--city {
  aspect-ratio: 3 / 2;
}

.page-about .about-frame .sw-media__img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  display: block;
}

.page-about .about-fold {
  margin-top: 14px;
}

.page-about .about-fold .sw-fold__trigger,
.page-about .about-partner .sw-fold__trigger {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border: 1px solid var(--sw-line-2);
  border-radius: var(--sw-pill);
  background: rgba(11, 18, 32, 0.7);
  color: var(--sw-silver);
  font-family: var(--sw-font);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: color 200ms var(--sw-ease), border-color 200ms var(--sw-ease), background 200ms var(--sw-ease);
}

.page-about .about-fold .sw-fold__trigger:hover,
.page-about .about-partner .sw-fold__trigger:hover {
  color: var(--sw-white);
  border-color: rgba(46, 125, 255, 0.6);
  background: rgba(46, 125, 255, 0.1);
}

.page-about .sw-fold__trigger[aria-expanded="true"] {
  color: var(--sw-green);
  border-color: rgba(57, 255, 136, 0.5);
}

.page-about .sw-fold__icon {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--sw-blue);
  box-shadow: 0 0 0 4px rgba(46, 125, 255, 0.14);
  flex: none;
}

.page-about .sw-fold__trigger[aria-expanded="true"] .sw-fold__icon {
  background: var(--sw-green);
  box-shadow: 0 0 0 4px rgba(57, 255, 136, 0.16);
}

.page-about .sw-fold__panel {
  overflow: hidden;
}

.page-about .sw-fold__body {
  color: var(--sw-silver);
  font-size: 15px;
  line-height: 1.85;
  padding-top: 14px;
}

.page-about .sw-fold__body p {
  margin: 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: 18px;
  position: relative;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, rgba(46, 125, 255, 0.7), rgba(57, 255, 136, 0.35) 42%, transparent 78%);
}

.page-about .about-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}

.page-about .about-hero__title {
  margin: 12px 0 18px;
  font-family: var(--sw-font);
  font-weight: 800;
  font-size: clamp(30px, 8.4vw, 58px);
  line-height: 1.12;
  letter-spacing: -0.04em;
  color: var(--sw-white);
}

.page-about .about-hero__lead {
  margin: 0 0 26px;
  max-width: 60ch;
}

.page-about .about-hero__stats {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-rail);
  border: 1px solid var(--about-rail);
  border-radius: var(--sw-r-md);
  overflow: hidden;
}

.page-about .about-stat {
  background: var(--sw-ink);
  padding: 14px 12px;
  min-width: 0;
}

.page-about .about-stat .sw-stat__value {
  display: block;
  font-family: var(--sw-mono);
  font-weight: 600;
  font-size: clamp(19px, 5vw, 26px);
  color: var(--sw-green);
  letter-spacing: -0.02em;
}

.page-about .about-stat .sw-stat__label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--sw-silver);
  word-break: break-word;
}

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

.page-about .about-hero__media {
  margin: 0;
}

/* ---------- 发展时间线 ---------- */
.page-about .about-journey {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-journey__item {
  position: relative;
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 32px;
}

.page-about .about-journey__item::before {
  content: "";
  position: absolute;
  left: 28px;
  top: 34px;
  bottom: 2px;
  width: 1px;
  background: linear-gradient(180deg, var(--about-rail-strong), var(--about-rail));
}

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

.page-about .about-journey__item:last-child::before {
  display: none;
}

.page-about .about-journey__node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding-top: 4px;
}

.page-about .about-journey__dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--sw-green);
  box-shadow: 0 0 0 5px rgba(57, 255, 136, 0.12);
  flex: none;
}

.page-about .about-journey__year {
  font-family: var(--sw-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--sw-silver);
  writing-mode: vertical-rl;
  letter-spacing: 0.08em;
}

.page-about .about-journey__content {
  background: var(--about-panel-soft);
  border: 1px solid var(--sw-line);
  border-radius: var(--sw-r-md);
  padding: 20px 18px;
  min-width: 0;
  box-shadow: var(--about-card-shadow);
}

.page-about .about-journey__title {
  margin: 0 0 10px;
  font-family: var(--sw-font);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.02em;
  color: var(--sw-white);
}

.page-about .about-journey__text {
  margin: 0;
  color: var(--sw-silver);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 团队分工 ---------- */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

.page-about .about-team__roles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-role {
  padding: 18px;
}

.page-about .about-role .sw-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  justify-content: space-between;
  margin-bottom: 10px;
}

.page-about .about-role .sw-card__title {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--sw-white);
}

.page-about .about-role .sw-card__body p {
  margin: 0;
  color: var(--sw-silver);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-team__media {
  margin: 0;
}

/* ---------- 生产链路 ---------- */
.page-about .about-path {
  margin-top: 40px;
  padding: 24px 18px;
  border: 1px solid var(--sw-line);
  border-radius: var(--sw-r-lg);
  background:
    linear-gradient(180deg, rgba(46, 125, 255, 0.06), rgba(7, 9, 15, 0) 62%),
    var(--sw-deep);
}

.page-about .about-path__title {
  margin: 0 0 22px;
  font-family: var(--sw-font);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.02em;
  color: var(--sw-white);
}

.page-about .about-path__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-path__list.sw-path .sw-path__node {
  position: relative;
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  grid-template-areas:
    "dot label"
    "dot note";
  column-gap: 14px;
  row-gap: 4px;
  padding: 0 0 22px;
}

.page-about .about-path__list.sw-path .sw-path__node:last-child {
  padding-bottom: 0;
}

.page-about .about-path__list.sw-path .sw-path__node::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 16px;
  bottom: 0;
  width: 1px;
  background: var(--about-rail);
}

.page-about .about-path__list.sw-path .sw-path__node:last-child::before {
  display: none;
}

.page-about .about-path__list.sw-path .sw-path__dot {
  grid-area: dot;
  width: 11px;
  height: 11px;
  margin-top: 4px;
  border-radius: 50%;
  background: var(--sw-silver);
  opacity: 0.45;
}

.page-about .about-path__list.sw-path .sw-path__node.is-on .sw-path__dot {
  background: var(--sw-green);
  opacity: 1;
  box-shadow: 0 0 0 5px rgba(57, 255, 136, 0.12);
}

.page-about .about-path__list.sw-path .sw-path__label {
  grid-area: label;
  font-family: var(--sw-font);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--sw-white);
}

.page-about .about-path__note {
  grid-area: note;
  font-family: var(--sw-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--sw-silver);
  letter-spacing: 0.01em;
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-partner {
  border: 1px solid var(--sw-line);
  border-radius: var(--sw-r-md);
  background: var(--about-panel-soft);
  padding: 20px 18px;
  min-width: 0;
  transition: border-color 220ms var(--sw-ease), transform 220ms var(--sw-ease);
}

.page-about .about-partner:hover {
  border-color: rgba(46, 125, 255, 0.42);
  transform: translateY(-2px);
}

.page-about .about-partner__top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.page-about .about-partner__num {
  font-family: var(--sw-mono);
  font-weight: 600;
  font-size: 32px;
  line-height: 1;
  color: var(--sw-blue);
  letter-spacing: -0.03em;
  flex: none;
}

.page-about .about-partner__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.page-about .about-partner__name {
  margin: 0;
  font-family: var(--sw-font);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--sw-white);
}

.page-about .about-partner__desc {
  margin: 0 0 14px;
  color: var(--sw-silver);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 荣誉 ---------- */
.page-about .about-honor {
  padding-top: 0;
}

.page-about .about-honor__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  padding: 28px 20px;
  border: 1px solid var(--sw-line);
  border-radius: var(--sw-r-lg);
  background:
    radial-gradient(90% 120% at 0% 0%, rgba(139, 92, 246, 0.14), transparent 58%),
    var(--sw-panel);
}

.page-about .about-honor__title {
  margin: 12px 0 14px;
}

.page-about .about-honor__main .sw-text {
  margin: 0;
}

.page-about .about-honor__figures {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--about-rail);
  border: 1px solid var(--about-rail);
  border-radius: var(--sw-r-md);
  overflow: hidden;
  align-self: start;
}

.page-about .about-honor__fig {
  background: var(--sw-ink);
  padding: 16px;
  min-width: 0;
}

.page-about .about-honor__fig .sw-stat__value {
  display: block;
  font-family: var(--sw-mono);
  font-weight: 600;
  font-size: 26px;
  color: var(--sw-white);
  letter-spacing: -0.03em;
}

.page-about .about-honor__fig .sw-stat__label {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--sw-silver);
}

/* ---------- 北京运营 ---------- */
.page-about .about-beijing__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: center;
}

.page-about .about-beijing__media {
  margin: 0;
}

.page-about .about-beijing__copy .sw-section__index {
  display: inline-block;
  margin-bottom: 8px;
}

.page-about .about-beijing__copy .sw-section__title {
  margin: 0 0 14px;
}

.page-about .about-beijing__copy .sw-text {
  margin: 0 0 18px;
}

.page-about .about-beijing__list {
  margin: 0 0 22px;
}

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

/* ---------- 收尾 ---------- */
.page-about .about-next {
  padding-top: 0;
  padding-bottom: 72px;
}

.page-about .about-next__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  padding: 26px 20px;
  border: 1px solid var(--sw-line);
  border-radius: var(--sw-r-lg);
  background:
    linear-gradient(90deg, rgba(255, 90, 54, 0.08), rgba(7, 9, 15, 0) 66%),
    var(--sw-deep);
}

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

.page-about .about-next__copy .sw-text {
  margin: 0;
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

/* ---------- 桌面 ---------- */
@media (min-width: 760px) {
  .page-about .about-hero__inner {
    grid-template-columns: 7fr 5fr;
    gap: 44px;
    align-items: center;
  }

  .page-about .about-team__grid {
    grid-template-columns: 8fr 4fr;
    gap: 30px;
  }

  .page-about .about-team__roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-partners__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-partner {
    display: flex;
    flex-direction: column;
    padding: 24px 22px;
  }

  .page-about .about-partner .sw-fold__panel {
    margin-top: auto;
  }

  .page-about .about-partner .sw-fold__trigger {
    align-self: flex-start;
  }

  .page-about .about-honor__inner {
    grid-template-columns: 7fr 5fr;
    gap: 36px;
    padding: 36px 32px;
    align-items: center;
  }

  .page-about .about-beijing__inner {
    grid-template-columns: 5fr 7fr;
    gap: 40px;
  }

  .page-about .about-next__inner {
    grid-template-columns: 7fr 5fr;
    align-items: center;
    padding: 32px 30px;
  }

  .page-about .about-next__links {
    justify-content: flex-end;
  }

  .page-about .about-journey__item {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 24px;
  }

  .page-about .about-journey__item::before {
    left: 41px;
  }

  .page-about .about-journey__content {
    padding: 24px 24px;
  }

  .page-about .about-journey__year {
    writing-mode: horizontal-tb;
    font-size: 13px;
  }

  .page-about .about-path {
    padding: 32px 30px;
  }

  .page-about .about-path__list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0 6px;
  }

  .page-about .about-path__list.sw-path .sw-path__node {
    grid-template-columns: 20px minmax(0, 1fr);
    grid-template-areas:
      "dot label"
      "dot note";
    padding: 0 0 0;
  }

  .page-about .about-path__list.sw-path .sw-path__node::before {
    left: 9px;
    top: 16px;
    bottom: auto;
    width: calc(100% + 6px);
    height: 1px;
  }

  .page-about .about-path__list.sw-path .sw-path__node:last-child::before {
    display: none;
  }
}

@media (min-width: 1080px) {
  .page-about .about-hero__inner {
    gap: 56px;
  }

  .page-about .about-head {
    margin-bottom: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-partner,
  .page-about .about-fold .sw-fold__trigger,
  .page-about .about-partner .sw-fold__trigger {
    transition: none;
  }

  .page-about .about-partner:hover {
    transform: none;
  }
}