/* ===== 品牌总览 · page-about ===== */

.page-about {
  --about-rail: 72px;
  --about-tint: rgba(34, 227, 211, .07);
  --about-warm: rgba(255, 122, 47, .07);
  position: relative;
  overflow-x: hidden;
}

/* ---- 面包屑 ---- */
.page-about .about-crumbs {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: clamp(18px, 3vw, 34px);
  font-size: var(--fs-14);
  color: var(--mist);
}

.page-about .about-crumbs__sep {
  color: var(--cyan);
  opacity: .75;
}

/* ---- 首屏 ---- */
.page-about .about-hero {
  position: relative;
  padding-bottom: clamp(36px, 6vw, 84px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -12%;
  right: -18%;
  width: min(660px, 78vw);
  height: min(660px, 78vw);
  border-radius: 50%;
  background: radial-gradient(circle at 58% 42%, var(--glow), transparent 66%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 46px);
  padding-top: clamp(24px, 4.5vw, 52px);
}

.page-about .about-hero__kicker {
  margin: 0 0 clamp(12px, 2vw, 20px);
  color: var(--cyan);
  letter-spacing: .1em;
}

.page-about .about-hero__title {
  margin: 0 0 clamp(16px, 2.6vw, 26px);
  font-size: var(--fs-96);
  line-height: .98;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-about .about-hero__lede {
  margin: 0 0 clamp(22px, 3vw, 34px);
  max-width: 34em;
  color: var(--mist);
}

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

.page-about .about-hero__media {
  margin: 0;
  transform: rotate(1.1deg);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-hero__stats {
  position: relative;
  z-index: 1;
  margin-top: clamp(32px, 5vw, 60px);
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--line);
}

/* ---- 章节导航 ---- */
.page-about .about-chapters {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 14px 2px 18px;
  margin-bottom: clamp(8px, 2vw, 20px);
  border-bottom: 1px solid var(--line-soft);
  scrollbar-width: none;
}

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

.page-about .about-chapters .chapter-nav__link {
  flex: none;
  font-size: var(--fs-14);
  white-space: nowrap;
}

/* ---- 章节骨架 ---- */
.page-about .about-chapter {
  position: relative;
  padding: clamp(34px, 6vw, 78px) 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-chapter__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2.4vw, 28px);
}

.page-about .about-chapter__num {
  margin: 0;
  font-size: var(--fs-30);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .08em;
  color: rgba(34, 227, 211, .55);
}

.page-about .about-chapter__body > * + * {
  margin-top: clamp(18px, 2.6vw, 30px);
}

.page-about .about-prose {
  max-width: 42em;
}

.page-about .about-prose p {
  margin: 0 0 1.2em;
  color: var(--mist);
}

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

.page-about .about-inline-stats {
  padding: clamp(16px, 2.4vw, 24px) 0 0;
  border-top: 1px dashed var(--line-soft);
}

/* ---- 覆盖版图 ---- */
.page-about .about-map__lede {
  max-width: 40em;
  color: var(--mist);
}

.page-about .about-map {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .about-map__cell {
  position: relative;
  overflow: hidden;
  padding: 14px 13px 12px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: linear-gradient(155deg, var(--about-tint), var(--about-warm) 62%, transparent);
  transition: transform .18s ease, border-color .18s ease;
}

.page-about .about-map__cell::before {
  content: "";
  position: absolute;
  right: -34px;
  bottom: -52px;
  width: 104px;
  height: 104px;
  border-radius: 50%;
  background: var(--glow);
  opacity: .7;
  transition: transform .3s ease, opacity .3s ease;
}

.page-about .about-map__cell:hover {
  transform: translateY(-3px);
  border-color: var(--line);
}

.page-about .about-map__cell:hover::before {
  transform: scale(1.25);
  opacity: 1;
}

.page-about .about-map__name {
  position: relative;
  display: block;
  font-size: var(--fs-17);
  font-weight: 700;
  color: var(--white);
}

.page-about .about-map__pace {
  position: relative;
  display: block;
  margin-top: 8px;
  font-size: var(--fs-12);
  letter-spacing: .04em;
  color: var(--mist);
}

.page-about .about-map__media {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
}

/* ---- 发展历程时间线 ---- */
.page-about .about-timeline {
  list-style: none;
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 8px 4px 22px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
}

.page-about .about-timeline__item {
  position: relative;
  flex: 0 0 min(258px, 76vw);
  padding-top: 30px;
  scroll-snap-align: start;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(34, 227, 211, .14);
}

.page-about .about-timeline__item::after {
  content: "";
  position: absolute;
  left: 18px;
  top: 14px;
  right: -20px;
  height: 1px;
  background: var(--line);
}

.page-about .about-timeline__item:last-child::after {
  display: none;
}

.page-about .about-timeline__year {
  display: block;
  font-size: var(--fs-22);
  font-weight: 700;
  color: var(--orange);
  letter-spacing: .05em;
}

.page-about .about-timeline__title {
  margin: 8px 0 8px;
  font-size: var(--fs-17);
  font-weight: 800;
  color: var(--white);
}

.page-about .about-timeline__text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--mist);
}

/* ---- 团队与校核 ---- */
.page-about .about-two {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.6vw, 46px);
}

.page-about .about-flow__lead {
  margin: 0 0 1.2em;
  color: var(--mist);
}

.page-about .about-flow__copy > p {
  margin: 0 0 1.2em;
  color: var(--mist);
}

.page-about .about-flow__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-flow__list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(247, 249, 255, .04);
}

.page-about .about-flow__step {
  flex: none;
  font-size: var(--fs-12);
  line-height: 1.85;
  color: var(--orange);
  letter-spacing: .08em;
}

.page-about .about-flow__step-text {
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-flow__viz {
  display: grid;
  gap: 20px;
  align-content: start;
  justify-items: center;
}

.page-about .about-ring {
  display: block;
  width: min(248px, 78%);
  height: auto;
}

.page-about .about-ring__big {
  font-family: var(--head);
  font-size: 32px;
  font-weight: 900;
  fill: var(--white);
}

.page-about .about-ring__small {
  font-family: var(--head);
  font-size: 11px;
  letter-spacing: .12em;
  fill: var(--mist);
}

.page-about .about-legend {
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
  display: grid;
  gap: 10px;
}

.page-about .about-legend li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-legend__dot {
  flex: none;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.page-about .about-legend__dot--a {
  background: var(--cyan);
}

.page-about .about-legend__dot--b {
  background: var(--orange);
}

.page-about .about-legend__dot--c {
  background: var(--mist);
}

.page-about .about-flow__media {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
}

/* ---- 合作生态 ---- */
.page-about .about-partners {
  display: grid;
  gap: clamp(18px, 2.6vw, 28px);
}

.page-about .about-partners__card {
  position: relative;
}

/* ---- 家庭中文版 ---- */
.page-about .about-family__copy p {
  margin: 0 0 1.2em;
  color: var(--mist);
}

.page-about .about-typescale {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-typescale__row {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 13px 16px;
  border-left: 3px solid var(--line);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(247, 249, 255, .035);
}

.page-about .about-typescale__tag {
  flex: none;
  width: 58px;
  font-size: var(--fs-12);
  color: var(--cyan);
}

.page-about .about-typescale__sample {
  color: var(--white);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: .01em;
}

.page-about .about-typescale__sample--s1 {
  font-size: 12px;
}

.page-about .about-typescale__sample--s2 {
  font-size: 16px;
}

.page-about .about-typescale__sample--s3 {
  font-size: 20px;
}

.page-about .about-typescale__sample--s4 {
  font-size: 24px;
}

/* ---- 收尾 ---- */
.page-about .about-next {
  padding: 0 0 clamp(48px, 8vw, 110px);
}

.page-about .about-next__band {
  border-radius: var(--radius);
}

.page-about .about-next__inner {
  padding: clamp(28px, 5vw, 60px) clamp(22px, 4vw, 56px);
  max-width: 46em;
}

.page-about .about-next__text {
  margin: 0 0 clamp(20px, 3vw, 30px);
  color: var(--mist);
}

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

/* ===== 断点 ===== */
@media (min-width: 700px) {
  .page-about .about-map {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    align-items: end;
  }

  .page-about .about-chapter__grid {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: clamp(20px, 3vw, 40px);
  }

  .page-about .about-chapter__num {
    position: sticky;
    top: 96px;
    font-size: var(--fs-44);
  }

  .page-about .about-two {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }

  .page-about .about-two--flip > *:first-child {
    order: 2;
  }

  .page-about .about-timeline {
    gap: 26px;
    padding-bottom: 26px;
  }

  .page-about .about-timeline__item {
    flex: 0 0 min(272px, 30vw);
  }
}

@media (min-width: 1140px) {
  .page-about .about-map {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about {
    --about-rail: 96px;
  }
}
</final>
</final>