/* ===== 页面：品牌概况 ===== */
.page-about {
  background: var(--ink);
  color: var(--text-body);
  overflow-x: hidden;
}

.page-about .section__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-about .section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.15;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-about .section__lead {
  margin: 16px 0 0;
  max-width: 46em;
  font-size: 16px;
  line-height: 1.95;
  color: var(--text-body);
}

.page-about .section__head {
  margin-bottom: 34px;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  margin: 0 0 26px;
}

.page-about .breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
}

.page-about .breadcrumbs__item {
  color: var(--mid);
}

.page-about .breadcrumbs__item a {
  color: var(--mid);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t), border-color var(--t);
}

.page-about .breadcrumbs__item a:hover {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

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

.page-about .breadcrumbs__item[aria-current="page"] {
  color: var(--white);
}

/* ---------- 首屏 ---------- */
.ab-hero {
  position: relative;
  overflow: hidden;
  padding: 34px 0 58px;
  border-bottom: 1px solid var(--board);
}

.ab-hero__ghost {
  position: absolute;
  right: -.05em;
  bottom: -.26em;
  z-index: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(150px, 33vw, 400px);
  line-height: 1;
  letter-spacing: -.04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(91, 122, 110, .3);
  pointer-events: none;
  user-select: none;
}

.page-about .ab-hero .shell {
  position: relative;
  z-index: 1;
}

.ab-hero__grid {
  display: grid;
  gap: 34px;
}

.ab-hero__tag {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--lime);
}

.ab-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 8.4vw, 76px);
  line-height: 1.03;
  letter-spacing: -.015em;
  color: var(--white);
}

.ab-hero__title em {
  font-style: normal;
  color: var(--lime);
}

.ab-hero__lead {
  margin: 20px 0 0;
  max-width: 36em;
  font-size: 16.5px;
  line-height: 1.95;
  color: var(--text-body);
}

.ab-hero__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin-top: 28px;
}

.ab-hero__facts {
  margin: 0;
  border-top: 1px solid var(--board);
}

.ab-hero__facts > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding: 13px 0;
  border-bottom: 1px solid var(--board);
}

.ab-hero__facts dt {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--mid);
}

.ab-hero__facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
}

/* ---------- 发展脉络 ---------- */
.ab-timeline {
  padding-top: 62px;
}

.ab-banner {
  margin: 0 0 40px;
}

.ab-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border: 1px solid var(--board);
}

.ab-track {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.ab-track::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, var(--lime), var(--board) 68%, transparent);
}

.ab-track__item {
  position: relative;
  padding: 0 0 26px 38px;
}

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

.ab-track__dot {
  position: absolute;
  left: 0;
  top: 8px;
  display: grid;
  place-items: center;
  width: 17px;
  height: 17px;
  border: 1px solid var(--mist);
  border-radius: 50%;
  background: var(--ink);
  transition: border-color var(--t), box-shadow var(--t);
}

.ab-track__dot::after {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mid);
  transition: background var(--t), transform var(--t);
}

.ab-track__item:hover .ab-track__dot {
  border-color: var(--lime);
  box-shadow: 0 0 0 4px rgba(200, 246, 46, .14);
}

.ab-track__item:hover .ab-track__dot::after {
  background: var(--lime);
  transform: scale(1.2);
}

.ab-track__card {
  padding: 20px 22px 22px;
  background: var(--paper);
  color: var(--paper-ink);
  border-left: 3px solid var(--lime);
  transition: transform var(--t), box-shadow var(--t);
}

.ab-track__item:hover .ab-track__card {
  transform: translate(-3px, -3px);
  box-shadow: 6px 6px 0 0 var(--lime);
}

.ab-track__year {
  display: inline-block;
  padding: 3px 9px;
  background: var(--paper-ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
}

.ab-track__title {
  margin: 14px 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 21px;
  line-height: 1.3;
  color: var(--paper-ink);
}

.ab-track__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: #4a5445;
}

/* ---------- 团队 ---------- */
.ab-team {
  padding-top: 70px;
}

.ab-team__grid {
  display: grid;
  gap: 34px;
}

.ab-team__figure {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  margin: 0 0 24px;
}

.ab-team__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(58px, 13vw, 108px);
  line-height: .9;
  letter-spacing: -.04em;
  color: var(--lime);
}

.ab-team__unit {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .14em;
  color: var(--mid);
}

.ab-roles {
  margin: 0;
  padding: 0;
  list-style: none;
}

.ab-roles__item {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 16px 0;
  border-top: 1px solid var(--board);
}

.ab-roles__num {
  flex: 0 0 auto;
  min-width: 2.1em;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 25px;
  line-height: 1;
  color: var(--white);
}

.ab-roles__body {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-body);
}

.ab-roles__body strong {
  display: block;
  margin-bottom: 4px;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--lime);
}

.ab-shot {
  margin: 0;
}

.ab-shot img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--board);
}

.ab-shot figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: .06em;
  color: var(--mid);
}

/* ---------- 节奏面板 ---------- */
.ab-pace__panel {
  position: relative;
  overflow: hidden;
  padding: 38px 22px 34px;
  background: var(--white);
  color: var(--paper-ink);
}

.ab-pace__panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 5px;
  background: linear-gradient(90deg, var(--lime) 0 40%, var(--orange) 40% 60%, var(--cyan) 60% 100%);
}

.ab-pace__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: #5d6b57;
}

.ab-pace__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4.2vw, 38px);
  line-height: 1.15;
  color: var(--paper-ink);
}

.ab-pace__lead {
  margin: 14px 0 0;
  max-width: 44em;
  font-size: 15.5px;
  line-height: 1.9;
  color: #4a5445;
}

.ab-pace__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  background: #ccd6ce;
  border: 1px solid #ccd6ce;
}

.ab-pace__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px 20px;
  background: var(--white);
}

.ab-pace__value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(24px, 5.4vw, 32px);
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--paper-ink);
}

.ab-pace__unit {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  color: #3f4a3c;
}

.ab-pace__note {
  font-size: 12.5px;
  line-height: 1.7;
  color: #6b7768;
}

/* ---------- 合作生态 ---------- */
.ab-partners {
  padding-top: 70px;
}

.ab-partners__grid {
  display: grid;
  gap: 34px;
}

.ab-partners__lead {
  margin: 16px 0 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.95;
  color: var(--text-body);
}

.ab-partners__list {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.ab-partners__item {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 18px 0;
  border-top: 1px solid var(--board);
}

.ab-partners__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 34px;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--orange);
}

.ab-partners__text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-body);
}

.ab-partners__tail {
  margin: 24px 0 0;
  padding: 16px 18px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--white);
  background: var(--charcoal);
  border-left: 3px solid var(--cyan);
}

/* ---------- 荣誉 ---------- */
.ab-honor {
  padding-top: 70px;
}

.ab-honor__grid {
  display: grid;
  gap: 16px;
}

.ab-honor__card {
  padding: 24px 22px 26px;
  background: var(--charcoal);
  border: 1px solid var(--board);
  transition: transform var(--t), border-color var(--t), background var(--t);
}

.ab-honor__card:hover {
  transform: translateY(-4px);
  border-color: var(--lime);
  background: #16211c;
}

.ab-honor__year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--lime);
}

.ab-honor__title {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.35;
  color: var(--white);
}

.ab-honor__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-body);
}

.ab-honor__tail {
  margin: 28px 0 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--mid);
}

.ab-honor__tail a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 246, 46, .45);
  transition: border-color var(--t);
}

.ab-honor__tail a:hover {
  border-bottom-color: var(--lime);
}

/* ---------- 联系方式 ---------- */
.ab-visit {
  padding-top: 70px;
  padding-bottom: 80px;
}

.ab-visit__grid {
  display: grid;
  gap: 34px;
}

.ab-visit__lead {
  margin: 16px 0 26px;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.95;
  color: var(--text-body);
}

.ab-visit__list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--board);
}

.ab-visit__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 20px;
  padding: 15px 0;
  border-bottom: 1px solid var(--board);
}

.ab-visit__row dt {
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--mid);
}

.ab-visit__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--white);
  word-break: break-word;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .ab-pace__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

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

@media (min-width: 920px) {
  .ab-hero {
    padding: 44px 0 82px;
  }

  .ab-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, .85fr);
    align-items: end;
    gap: 56px;
  }

  .ab-timeline {
    padding-top: 84px;
  }

  .ab-team,
  .ab-partners,
  .ab-honor {
    padding-top: 92px;
  }

  .ab-visit {
    padding-top: 92px;
    padding-bottom: 104px;
  }

  .ab-team__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .95fr);
    gap: 52px;
    align-items: start;
  }

  .ab-partners__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 54px;
    align-items: center;
  }

  .ab-visit__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 56px;
    align-items: start;
  }

  .ab-pace__panel {
    padding: 46px 40px 42px;
  }

  .ab-track__item {
    padding-left: 46px;
  }
}

@media (min-width: 1080px) {
  .ab-honor__card:nth-child(2) {
    transform: translateY(24px);
  }

  .ab-honor__card:nth-child(2):hover {
    transform: translateY(18px);
  }

  .ab-shot--partner {
    margin-top: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: 1ms !important;
  }

  .ab-honor__card:nth-child(2) {
    transform: none;
  }
}