/* ===== 品牌历程页 ===== */
.page-about {
  --about-scale: 84px;
  --about-gap: 48px;
}

/* --- 首屏 --- */
.page-about .about-hero {
  position: relative;
  padding: 26px 0 34px;
  background-image:
    linear-gradient(to right, rgba(11, 37, 69, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(11, 37, 69, 0.055) 1px, transparent 1px);
  background-size: 64px 64px;
  border-bottom: 1px solid var(--wb-line-strong);
}

.page-about .about-hero__title {
  margin: 12px 0 0;
  font-size: clamp(30px, 7.4vw, 60px);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.022em;
  color: var(--wb-deep);
}

.page-about .about-hero__cols {
  display: grid;
  gap: 26px;
  margin-top: 22px;
}

.page-about .about-hero__lede {
  margin: 0;
  font-size: 17px;
  line-height: 1.8;
  color: var(--wb-ink);
  max-width: 42em;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--wb-line);
  border: 1px solid var(--wb-line);
}

.page-about .about-hero__stats > div {
  background: var(--wb-white);
  padding: 12px 14px 14px;
}

.page-about .about-hero__stats dt {
  font-family: var(--wb-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--wb-gray);
}

.page-about .about-hero__stats dd {
  margin: 6px 0 0;
  font-family: var(--wb-mono);
  font-size: 23px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--wb-deep);
}

/* --- 刻度栏 + 内容流 --- */
.page-about .about-layout {
  display: block;
  padding-top: 28px;
}

.page-about .about-scale {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0 0 26px;
  padding: 0 0 14px;
  border-bottom: 1px solid var(--wb-line-strong);
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-scale::-webkit-scrollbar {
  display: none;
}

.page-about .about-scale__cap {
  display: none;
}

.page-about .about-scale__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: none;
  min-height: 44px;
  padding: 0 14px;
  font-family: var(--wb-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--wb-gray);
  text-decoration: none;
  border: 1px solid var(--wb-line);
  border-radius: var(--wb-radius);
  white-space: nowrap;
  transition: color 180ms var(--wb-ease), border-color 180ms var(--wb-ease);
}

.page-about .about-scale__dot {
  width: 5px;
  height: 5px;
  background: var(--wb-line-strong);
  flex: none;
  transition: background-color 180ms var(--wb-ease);
}

.page-about .about-scale__item:hover,
.page-about .about-scale__item:focus-visible {
  color: var(--wb-signal);
  border-color: var(--wb-signal-soft);
}

.page-about .about-scale__item:hover .about-scale__dot,
.page-about .about-scale__item:focus-visible .about-scale__dot {
  background: var(--wb-signal);
}

.page-about .about-flow {
  min-width: 0;
}

.page-about .about-flow__viz {
  margin: 0 0 34px;
  border: 1px solid var(--wb-line);
  background: var(--wb-mist);
}

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

/* --- 改版节点 --- */
.page-about .about-node {
  padding: 30px 0 36px;
  border-top: 1px solid var(--wb-line-strong);
  scroll-margin-top: 100px;
}

.page-about .about-node__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.page-about .about-node__ver {
  font-family: var(--wb-mono);
  font-size: clamp(42px, 13vw, 72px);
  font-weight: 700;
  line-height: 0.88;
  letter-spacing: -0.04em;
  color: var(--wb-blueprint);
}

.page-about .about-node--current .about-node__ver {
  color: var(--wb-signal);
}

.page-about .about-node__stamp {
  font-family: var(--wb-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--wb-gray);
}

.page-about .about-node__title {
  margin: 16px 0 0;
  max-width: 18em;
  font-size: clamp(20px, 4.6vw, 29px);
  line-height: 1.34;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--wb-ink);
}

.page-about .about-node__cols {
  display: grid;
  gap: 22px;
  margin-top: 18px;
}

.page-about .about-node__cols p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.82;
  color: var(--wb-ink);
}

.page-about .about-node__cols p:last-child {
  margin-bottom: 0;
}

.page-about .about-facts {
  margin: 0;
  padding-top: 12px;
  border-top: 2px solid var(--wb-deep);
}

.page-about .about-facts dt {
  margin-top: 13px;
  font-family: var(--wb-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--wb-gray);
}

.page-about .about-facts dt:first-child {
  margin-top: 0;
}

.page-about .about-facts dd {
  margin: 4px 0 0;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.62;
  color: var(--wb-deep);
}

.page-about .about-node__fig {
  margin: 0;
  border: 1px solid var(--wb-line);
  background: var(--wb-mist);
}

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

.page-about .about-links {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  border-top: 1px solid var(--wb-line);
}

.page-about .about-links li {
  border-bottom: 1px solid var(--wb-line);
}

.page-about .about-links a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 6px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--wb-index);
  text-decoration: none;
  transition: color 180ms var(--wb-ease), padding-left 180ms var(--wb-ease);
}

.page-about .about-links a::before {
  content: "";
  width: 10px;
  height: 1px;
  margin-right: 12px;
  background: var(--wb-signal);
  flex: none;
}

.page-about .about-links a:hover,
.page-about .about-links a:focus-visible {
  color: var(--wb-deep);
  padding-left: 4px;
}

/* --- 折叠清单 --- */
.page-about .about-drop {
  margin-top: 18px;
  border: 1px solid var(--wb-line);
  border-left: 3px solid var(--wb-signal);
  background: var(--wb-mist);
}

.page-about .about-drop > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  padding: 8px 14px;
  cursor: pointer;
  list-style: none;
  font-family: var(--wb-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--wb-deep);
}

.page-about .about-drop > summary::-webkit-details-marker {
  display: none;
}

.page-about .about-drop > summary::after {
  content: "展开";
  margin-left: auto;
  font-size: 12px;
  font-weight: 400;
  color: var(--wb-index);
}

.page-about .about-drop[open] > summary::after {
  content: "收起";
}

.page-about .about-drop[open] > summary {
  border-bottom: 1px solid var(--wb-line);
}

.page-about .about-drop ul {
  list-style: none;
  margin: 0;
  padding: 10px 16px 14px 30px;
}

.page-about .about-drop li {
  position: relative;
  padding: 4px 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--wb-ink);
}

.page-about .about-drop li::before {
  content: "";
  position: absolute;
  left: -15px;
  top: 14px;
  width: 7px;
  height: 1px;
  background: var(--wb-signal);
}

/* --- 运营规模 --- */
.page-about .about-stats {
  margin-top: 44px;
  padding: 40px 0 46px;
  background: var(--wb-mist);
  border-top: 1px solid var(--wb-line);
  border-bottom: 1px solid var(--wb-line);
}

.page-about .about-stats__title {
  margin: 10px 0 0;
  font-size: clamp(22px, 5vw, 32px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--wb-deep);
}

.page-about .about-stats__lede {
  margin: 14px 0 0;
  max-width: 44em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--wb-ink);
}

.page-about .about-stats__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(158px, 1fr));
  gap: 1px;
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  background: var(--wb-line);
  border: 1px solid var(--wb-line);
}

.page-about .about-stats__grid li {
  background: var(--wb-white);
  padding: 18px 16px 20px;
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--wb-mono);
  font-size: clamp(30px, 7vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.025em;
  color: var(--wb-deep);
}

.page-about .about-stat__num > span {
  margin-left: 3px;
  font-size: 0.42em;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--wb-index);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--wb-gray);
}

/* --- 团队 --- */
.page-about .about-team {
  padding: 46px 0;
}

.page-about .about-team__cols {
  display: grid;
  gap: 30px;
}

.page-about .about-team__cols > div > p {
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.82;
  color: var(--wb-ink);
}

.page-about .about-team__lede {
  max-width: 40em;
}

.page-about .about-team__note {
  padding-left: 16px;
  border-left: 3px solid var(--wb-signal);
  font-size: 15px;
  color: var(--wb-gray);
}

.page-about .about-roster {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--wb-deep);
}

.page-about .about-roster li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 6px 14px;
  padding: 14px 0 12px;
  border-bottom: 1px solid var(--wb-line);
}

.page-about .about-roster__name {
  font-size: 15px;
  font-weight: 600;
  color: var(--wb-ink);
}

.page-about .about-roster__num {
  font-family: var(--wb-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--wb-deep);
}

.page-about .about-roster__bar {
  grid-column: 1 / -1;
  position: relative;
  display: block;
  height: 4px;
  background: var(--wb-mist);
  overflow: hidden;
}

.page-about .about-roster__bar::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: var(--bar, 0%);
  background: var(--wb-index);
}

/* --- 复核 --- */
.page-about .about-quality {
  padding: 46px 0 50px;
  border-top: 1px solid var(--wb-line-strong);
}

.page-about .about-quality__cols {
  display: grid;
  gap: 30px;
}

.page-about .about-quality__lede {
  margin: 14px 0 0;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.82;
  color: var(--wb-ink);
}

.page-about .about-steps {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid var(--wb-line);
}

.page-about .about-steps li {
  position: relative;
  padding: 14px 0 14px 46px;
  border-bottom: 1px solid var(--wb-line);
}

.page-about .about-steps__num {
  position: absolute;
  left: 0;
  top: 16px;
  font-family: var(--wb-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--wb-signal);
}

.page-about .about-steps strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--wb-deep);
}

.page-about .about-steps li > span:last-child {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--wb-gray);
}

.page-about .about-quality__fig {
  margin: 0;
  border: 1px solid var(--wb-line);
  background: var(--wb-mist);
}

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

/* --- 合作与资质 --- */
.page-about .about-partners {
  padding: 46px 0 50px;
  background: var(--wb-mist);
  border-top: 1px solid var(--wb-line);
}

.page-about .about-partners__title {
  margin: 10px 0 0;
  max-width: 20em;
  font-size: clamp(22px, 5vw, 32px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--wb-deep);
}

.page-about .about-partners__grid {
  display: grid;
  gap: 1px;
  margin-top: 26px;
  background: var(--wb-line);
  border: 1px solid var(--wb-line);
}

.page-about .about-partners__grid > div {
  background: var(--wb-white);
  padding: 22px 18px 24px;
}

.page-about .about-partners__num {
  display: block;
  font-family: var(--wb-mono);
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--wb-signal);
}

.page-about .about-partners__grid .wb-h3 {
  margin: 12px 0 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--wb-deep);
}

.page-about .about-partners__grid p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--wb-gray);
}

/* --- 接下来一年 --- */
.page-about .about-next {
  position: relative;
  padding: 48px 0 54px;
  background: var(--wb-deep);
  overflow: hidden;
}

.page-about .about-next::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--wb-on-deep-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--wb-on-deep-line) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}

.page-about .about-next .wb-wrap {
  position: relative;
  z-index: 1;
}

.page-about .about-next .wb-eyebrow {
  color: var(--wb-signal-soft);
}

.page-about .about-next .wb-eyebrow::before {
  background: var(--wb-signal);
}

.page-about .about-next__title {
  margin: 10px 0 0;
  font-size: clamp(23px, 5.2vw, 34px);
  font-weight: 800;
  line-height: 1.28;
  color: var(--wb-white);
}

.page-about .about-next__list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  border-top: 1px solid var(--wb-on-deep-line);
}

.page-about .about-next__list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--wb-on-deep-line);
}

.page-about .about-next__idx {
  font-family: var(--wb-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--wb-signal);
  padding-top: 2px;
}

.page-about .about-next__list strong {
  display: block;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--wb-white);
}

.page-about .about-next__list p {
  margin: 6px 0 0;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(231, 235, 240, 0.78);
}

.page-about .about-next__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-about .about-next .wb-btn--ghost {
  color: var(--wb-white);
  border-color: rgba(231, 235, 240, 0.42);
}

.page-about .about-next .wb-btn--ghost:hover,
.page-about .about-next .wb-btn--ghost:focus-visible {
  border-color: var(--wb-white);
}

/* ===== 断点 ===== */
@media (min-width: 620px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 40px 0 44px;
  }

  .page-about .about-hero__cols {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--about-gap);
    align-items: end;
    margin-top: 26px;
  }

  .page-about .about-layout {
    display: grid;
    grid-template-columns: var(--about-scale) minmax(0, 1fr);
    gap: var(--about-gap);
    padding-top: 36px;
  }

  .page-about .about-scale {
    position: sticky;
    top: 96px;
    align-self: start;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: calc(100vh - 130px);
    margin: 0;
    padding: 0 0 0 14px;
    border-bottom: 0;
    border-left: 1px solid var(--wb-line-strong);
    overflow: visible;
  }

  .page-about .about-scale__cap {
    display: block;
    margin-bottom: 14px;
    padding-left: 2px;
    font-family: var(--wb-mono);
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--wb-gray);
  }

  .page-about .about-scale__item {
    min-height: 0;
    padding: 9px 0 9px 12px;
    font-size: 12px;
    border: 0;
    border-radius: 0;
  }

  .page-about .about-node__cols {
    margin-top: 22px;
  }

  .page-about .about-node--wide > .about-node__cols {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: 46px;
  }

  .page-about .about-node--even > .about-node__cols {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 46px;
  }

  .page-about .about-team__cols {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-quality__cols {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-quality__fig {
    margin-top: 34px;
  }

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

  .page-about .about-next__list li {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 20px;
    padding: 20px 0;
  }
}

@media (min-width: 1160px) {
  .page-about .about-hero__stats dd {
    font-size: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-scale__item,
  .page-about .about-links a,
  .page-about .about-scale__dot {
    transition: none;
  }
}

.page-about {
  --bar: 1rem;
}