/* ============ 品牌档案页 · page-about ============ */

.page-about {
  --ab-panel: #0B1626;
  --ab-card: #101C2E;
  --ab-rule: #273A52;
  --ab-rule-soft: #1B2C42;
  background: var(--dy-ink);
  overflow-x: clip;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about .dy-media {
  overflow: hidden;
}

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

/* ---------- 面包屑 ---------- */
.page-about .dy-breadcrumb {
  padding: clamp(16px, 2.4vw, 26px) 0 0;
}

.page-about .dy-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--f-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--dy-muted);
}

.page-about .dy-breadcrumb a {
  color: var(--dy-cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .15s var(--dy-ease);
}

.page-about .dy-breadcrumb a:hover,
.page-about .dy-breadcrumb a:focus-visible {
  border-bottom-color: var(--dy-cyan);
}

.page-about .dy-breadcrumb li[aria-current] {
  color: var(--dy-text);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  padding-top: clamp(22px, 3.4vw, 46px);
  padding-bottom: clamp(30px, 4.4vw, 58px);
}

.page-about .ab-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 44px);
  align-items: end;
}

.page-about .ab-hero__copy {
  min-width: 0;
}

.page-about .ab-hero__stamp {
  display: inline-block;
  transform: rotate(-2.4deg);
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--dy-gold);
  border: 1px solid rgba(255, 176, 32, .5);
  padding: 4px 10px;
  background: rgba(255, 176, 32, .06);
}

.page-about .ab-hero__title {
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(40px, 8.6vw, 78px);
  line-height: 1.02;
  letter-spacing: -.03em;
  color: var(--dy-text);
  margin: clamp(14px, 2vw, 22px) 0 0;
  overflow-wrap: break-word;
}

.page-about .ab-hero__mark {
  color: var(--dy-cyan);
  box-shadow: inset 0 -.16em 0 rgba(32, 227, 210, .22);
}

.page-about .ab-hero__lede {
  margin: clamp(16px, 2.2vw, 24px) 0 0;
  max-width: 62ch;
  color: var(--dy-text);
  opacity: .88;
}

.page-about .ab-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 2.6vw, 30px);
}

.page-about .ab-hero__figure {
  margin: 0;
  min-width: 0;
}

.page-about .ab-hero__cap {
  display: block;
  margin-top: 10px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--dy-muted);
}

/* ---------- 首屏数字条 ---------- */
.page-about .ab-stats {
  list-style: none;
  margin: clamp(30px, 4.4vw, 54px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ab-rule);
  border: 1px solid var(--ab-rule);
}

.page-about .ab-stats li {
  display: grid;
  gap: 4px;
  padding: 16px 16px 18px;
  background: var(--ab-panel);
  min-width: 0;
}

.page-about .ab-stats__num {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  color: var(--dy-cyan);
  letter-spacing: -.01em;
}

.page-about .ab-stats__lb {
  font-size: 13px;
  color: var(--dy-muted);
}

/* ---------- 主体双栏 ---------- */
.page-about .ab-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.6vw, 48px);
  padding-block: clamp(36px, 5vw, 76px) clamp(48px, 6vw, 96px);
}

/* ---------- 左侧目录栏 ---------- */
.page-about .ab-rail {
  min-width: 0;
}

.page-about .ab-rail__title {
  margin: 0;
}

.page-about .ab-rail__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-left: 1px solid var(--ab-rule);
}

.page-about .ab-rail__link {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: -1px;
  padding: 9px 12px;
  font-size: 14px;
  color: var(--dy-muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color .15s var(--dy-ease), border-color .15s var(--dy-ease), background .15s var(--dy-ease);
}

.page-about .ab-rail__link:hover,
.page-about .ab-rail__link:focus-visible {
  color: var(--dy-text);
  border-left-color: var(--dy-cyan);
  background: linear-gradient(90deg, rgba(32, 227, 210, .1), rgba(32, 227, 210, 0) 72%);
}

.page-about .ab-rail__dot {
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ab-rule);
  transition: background .16s var(--dy-ease), box-shadow .16s var(--dy-ease);
}

.page-about .ab-rail__link:hover .ab-rail__dot,
.page-about .ab-rail__link:focus-visible .ab-rail__dot {
  background: var(--dy-cyan);
  box-shadow: 0 0 0 4px rgba(32, 227, 210, .16);
}

.page-about .ab-rail__meta {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px dashed var(--ab-rule);
  display: grid;
  gap: 9px;
  justify-items: start;
}

.page-about .ab-rail__help {
  margin-top: 4px;
  font-size: 13px;
}

/* ---------- 内容栈 ---------- */
.page-about .ab-stack {
  min-width: 0;
}

.page-about .ab-block {
  padding-block: clamp(28px, 4vw, 54px);
}

.page-about .ab-block + .ab-block {
  border-top: 1px solid var(--ab-rule-soft);
}

.page-about .ab-block__title {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(26px, 4.4vw, 44px);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--dy-text);
  margin: 10px 0 0;
  overflow-wrap: break-word;
}

.page-about .ab-block__lede {
  margin: clamp(14px, 1.8vw, 20px) 0 0;
  max-width: 68ch;
  color: var(--dy-text);
  opacity: .82;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
}

/* ---------- 品牌剖面卡片 ---------- */
.page-about .ab-facts {
  margin-top: clamp(22px, 3vw, 34px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .ab-fact {
  position: relative;
  min-width: 0;
  padding: 22px 20px 24px;
  background: var(--ab-card);
  border: 1px solid var(--ab-rule);
  box-shadow: 5px 5px 0 0 rgba(39, 58, 82, .55);
  transition: transform .18s var(--dy-ease), box-shadow .18s var(--dy-ease), border-color .18s var(--dy-ease);
}

.page-about .ab-fact:hover {
  transform: translate(-2px, -2px);
  border-color: var(--dy-cyan);
  box-shadow: 7px 7px 0 0 rgba(32, 227, 210, .3);
}

.page-about .ab-fact__tag {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--dy-cyan);
  border: 1px solid rgba(32, 227, 210, .42);
  padding: 3px 8px;
}

.page-about .ab-fact__name {
  margin: 14px 0 0;
  font-family: var(--f-display);
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--dy-text);
}

.page-about .ab-fact__body {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--dy-muted);
}

/* ---------- 时间轴 ---------- */
.page-about .ab-tl__figure {
  margin: clamp(22px, 3vw, 32px) 0 0;
}

.page-about .ab-tl__cap {
  display: block;
  margin-top: 10px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  color: var(--dy-muted);
}

.page-about .ab-tl {
  list-style: none;
  position: relative;
  margin: clamp(26px, 3.4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(20px, 2.8vw, 32px);
}

.page-about .ab-tl::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--dy-cyan), var(--dy-magenta) 58%, var(--dy-gold));
  opacity: .45;
}

.page-about .ab-tl__item {
  position: relative;
  padding-left: 30px;
  min-width: 0;
}

.page-about .ab-tl__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--dy-ink);
  border: 2px solid var(--dy-cyan);
  transition: background .2s var(--dy-ease), box-shadow .2s var(--dy-ease);
}

.page-about .ab-tl__item:hover::before {
  background: var(--dy-cyan);
  box-shadow: 0 0 0 5px rgba(32, 227, 210, .16);
}

.page-about .ab-tl__item--gold::before {
  border-color: var(--dy-gold);
}

.page-about .ab-tl__item--gold:hover::before {
  background: var(--dy-gold);
  box-shadow: 0 0 0 5px rgba(255, 176, 32, .18);
}

.page-about .ab-tl__year {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--dy-muted);
}

.page-about .ab-tl__item--gold .ab-tl__year {
  color: var(--dy-gold);
}

.page-about .ab-tl__title {
  margin: 6px 0 0;
  font-family: var(--f-display);
  font-size: clamp(18px, 2.2vw, 23px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--dy-text);
}

.page-about .ab-tl__text {
  margin: 8px 0 0;
  max-width: 66ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--dy-muted);
}

.page-about .ab-tl__keys {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-tl__keys li {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--dy-muted);
  border: 1px solid var(--ab-rule);
  padding: 3px 9px;
  transition: color .16s var(--dy-ease), border-color .16s var(--dy-ease);
}

.page-about .ab-tl__item:hover .ab-tl__keys li {
  color: var(--dy-text);
  border-color: #3B5779;
}

.page-about .ab-tl__more {
  margin: clamp(22px, 3vw, 30px) 0 0;
  font-size: 14.5px;
  color: var(--dy-muted);
}

/* ---------- 团队角色 ---------- */
.page-about .ab-roles {
  margin-top: clamp(22px, 3vw, 32px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .ab-role {
  position: relative;
  min-width: 0;
  padding: 22px 20px;
  background: var(--ab-panel);
  border: 1px solid var(--ab-rule);
  transition: border-color .18s var(--dy-ease), transform .18s var(--dy-ease);
}

.page-about .ab-role::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--dy-cyan), rgba(32, 227, 210, 0));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .26s var(--dy-ease);
}

.page-about .ab-role:hover {
  border-color: #33506E;
  transform: translateY(-2px);
}

.page-about .ab-role:hover::after,
.page-about .ab-role:focus-within::after {
  transform: scaleX(1);
}

.page-about .ab-role__icon {
  display: block;
  width: 34px;
  height: 34px;
  color: var(--dy-cyan);
  filter: drop-shadow(0 0 6px rgba(32, 227, 210, .35));
}

.page-about .ab-role__icon svg {
  width: 100%;
  height: 100%;
}

.page-about .ab-role__name {
  margin: 14px 0 0;
  font-family: var(--f-display);
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 700;
  color: var(--dy-text);
}

.page-about .ab-role__text {
  margin: 9px 0 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--dy-muted);
}

/* ---------- 合作生态 ---------- */
.page-about .ab-eco {
  margin-top: clamp(22px, 3vw, 34px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 2.8vw, 34px);
  align-items: start;
}

.page-about .ab-eco__figure {
  margin: 0;
  min-width: 0;
}

.page-about .ab-eco__panel {
  min-width: 0;
}

.page-about .ab-eco__title {
  margin: 0;
  font-family: var(--f-display);
  font-size: clamp(19px, 2.3vw, 25px);
  font-weight: 700;
  color: var(--dy-text);
}

.page-about .ab-eco__text {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--dy-muted);
}

.page-about .ab-kv {
  margin: 20px 0 0;
  border-top: 1px solid var(--ab-rule-soft);
}

.page-about .ab-kv__row {
  display: grid;
  gap: 4px;
  padding: 13px 0;
  border-bottom: 1px solid var(--ab-rule-soft);
}

.page-about .ab-kv__key {
  font-family: var(--f-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--dy-cyan);
}

.page-about .ab-kv__val {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--dy-muted);
}

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

/* ---------- 规模与荣誉 ---------- */
.page-about .ab-honor {
  margin-top: clamp(22px, 3vw, 34px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .ab-medal {
  position: relative;
  min-width: 0;
  padding: 22px 20px 24px;
  background: linear-gradient(180deg, rgba(255, 176, 32, .05), rgba(255, 176, 32, 0) 58%), var(--ab-card);
  border: 1px solid var(--ab-rule);
  transition: transform .18s var(--dy-ease), border-color .18s var(--dy-ease);
}

.page-about .ab-medal:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 176, 32, .55);
}

.page-about .ab-medal__seal {
  display: block;
  width: 38px;
  height: 38px;
  color: var(--dy-gold);
  opacity: .85;
  transition: opacity .18s var(--dy-ease), filter .18s var(--dy-ease);
}

.page-about .ab-medal__seal svg {
  width: 100%;
  height: 100%;
}

.page-about .ab-medal:hover .ab-medal__seal {
  opacity: 1;
  filter: drop-shadow(0 0 8px rgba(255, 176, 32, .45));
}

.page-about .ab-medal__num {
  display: block;
  margin-top: 14px;
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 700;
  color: var(--dy-text);
  letter-spacing: -.01em;
}

.page-about .ab-medal__name {
  margin: 6px 0 0;
  font-family: var(--f-display);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--dy-gold);
  letter-spacing: .01em;
}

.page-about .ab-medal__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.74;
  color: var(--dy-muted);
}

/* ---------- 底部提示面板 ---------- */
.page-about .ab-note {
  margin-top: clamp(26px, 3.4vw, 42px);
  padding: clamp(22px, 3vw, 32px);
  background: var(--ab-panel);
  border: 1px solid var(--ab-rule);
  display: grid;
  gap: 14px;
  justify-items: start;
}

.page-about .ab-note p {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--dy-text);
  opacity: .86;
}

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

/* ---------- 响应式 ---------- */
@media (max-width: 1023px) {
  .page-about .ab-rail__list {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    gap: 0;
    overflow-x: auto;
    max-width: 100%;
    border-left: 0;
    border-bottom: 1px solid var(--ab-rule);
    padding-bottom: 10px;
    -webkit-overflow-scrolling: touch;
  }

  .page-about .ab-rail__list li {
    display: block;
  }

  .page-about .ab-rail__link {
    margin-left: 0;
    padding: 8px 14px;
    border-left: 0;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
  }

  .page-about .ab-rail__link:hover,
  .page-about .ab-rail__link:focus-visible {
    border-left-color: transparent;
    border-bottom-color: var(--dy-cyan);
    background: none;
  }

  .page-about .ab-rail__meta {
    margin-top: 16px;
    grid-template-columns: repeat(auto-fit, minmax(180px, max-content));
    justify-items: start;
  }
}

@media (min-width: 760px) {
  .page-about .ab-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

  .page-about .ab-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .ab-stats li {
    padding: 20px 18px 22px;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    gap: clamp(28px, 4vw, 56px);
  }
}

@media (min-width: 1024px) {
  .page-about .ab-body {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-about .ab-rail {
    position: sticky;
    top: 104px;
    align-self: start;
  }

  .page-about .ab-eco {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }
}

@media (min-width: 1180px) {
  .page-about .ab-honor {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-fact,
  .page-about .ab-role,
  .page-about .ab-medal,
  .page-about .ab-rail__link,
  .page-about .ab-rail__dot {
    transition: none;
  }
}