/* ===== 品牌概况页 · 页面专属样式 ===== */

.page-about {
  --ab-gap: 26px;
  --ab-ink: var(--brown);
  --ab-dark: var(--green-deep);
}

.page-about .section {
  padding: 46px 0;
}

/* ---------- 首屏 ---------- */

.page-about .ab-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 40px 0 48px;
  background: linear-gradient(152deg, var(--green-deep) 0%, var(--green) 58%, #33544a 100%);
  color: var(--cream);
  border-bottom: 1px solid var(--line-copper);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  left: -18%;
  bottom: -62%;
  width: 78%;
  height: 158%;
  background: var(--cream);
  opacity: .07;
  transform: rotate(-4deg);
  clip-path: polygon(0 100%, 0 18%, 100% 100%);
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: -28%;
  right: -6%;
  width: 30%;
  height: 122%;
  transform: skewX(-15deg);
  border-left: 2px solid rgba(199, 62, 54, .45);
  background: repeating-linear-gradient(
    90deg,
    rgba(184, 134, 11, .12) 0 2px,
    transparent 2px 18px
  );
  pointer-events: none;
}

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

.page-about .ab-hero__eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--copper-lt);
}

.page-about .ab-hero__title {
  margin: 0 0 18px;
  max-width: 20ch;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 30px;
  line-height: 1.24;
  letter-spacing: -.01em;
  color: #fff;
}

.page-about .ab-hero__lead {
  margin: 0 0 14px;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(249, 246, 240, .86);
}

.page-about .ab-hero__lead--soft {
  padding-left: 14px;
  border-left: 2px solid var(--copper);
  color: rgba(249, 246, 240, .68);
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-about .ab-hero__aside {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line-copper);
  border-radius: var(--radius);
  background: rgba(220, 227, 232, .2);
}

.page-about .ab-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 15px 14px;
  background: rgba(30, 51, 42, .6);
}

.page-about .ab-hero__statNum {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--copper-lt);
}

.page-about .ab-hero__statLabel {
  font-size: 13px;
  line-height: 1.5;
  color: rgba(249, 246, 240, .72);
}

/* ---------- 起手：品牌起源 ---------- */

.page-about .ab-origin__grid {
  display: grid;
  gap: 28px;
  margin-top: 28px;
}

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

.page-about .ab-origin__figure .media__frame {
  border-radius: var(--radius);
  box-shadow: 12px 12px 0 rgba(184, 134, 11, .18);
}

.page-about .ab-origin__text p {
  margin: 0 0 16px;
}

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

/* ---------- 牌谱：时间轴 ---------- */

.page-about .ab-line {
  position: relative;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-line::before {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 18px;
  left: 7px;
  width: 2px;
  background: linear-gradient(180deg, var(--line-copper) 0%, rgba(199, 62, 54, .42) 100%);
}

.page-about .ab-line__item {
  position: relative;
  padding: 0 0 26px 34px;
}

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

.page-about .ab-line__dot {
  position: absolute;
  left: 0;
  top: 5px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--cream);
  border: 2px solid var(--copper);
  box-shadow: 0 0 0 4px rgba(184, 134, 11, .13);
}

.page-about .ab-line__item--now .ab-line__dot {
  background: var(--vermilion);
  border-color: var(--vermilion);
  box-shadow: 0 0 0 4px rgba(199, 62, 54, .17);
}

.page-about .ab-line__body {
  transition: transform .3s var(--ease);
}

.page-about .ab-line__meta {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--copper);
}

.page-about .ab-line__no {
  font-weight: 700;
}

.page-about .ab-line__year {
  color: var(--slate);
}

.page-about .ab-line__item--now .ab-line__no {
  color: var(--vermilion);
}

.page-about .ab-line__title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--green-deep);
}

.page-about .ab-line__desc {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ab-ink);
  opacity: .86;
}

/* ---------- 阵容：团队 ---------- */

.page-about .ab-team__roles {
  margin-top: 30px;
}

.page-about .ab-role {
  position: relative;
  min-height: 250px;
  perspective: 1200px;
  outline: none;
}

.page-about .ab-role__inner {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  transition: transform .62s var(--ease);
}

.page-about .ab-role__face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
  padding: 24px 22px;
  border-radius: var(--radius);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.page-about .ab-role__face--front {
  background: var(--cream-2);
  border: 1px solid var(--line);
  border-top: 3px solid var(--green);
}

.page-about .ab-role__face--back {
  transform: rotateY(180deg);
  background: linear-gradient(160deg, var(--green) 0%, var(--green-deep) 100%);
  border: 1px solid var(--line-copper);
  color: rgba(249, 246, 240, .9);
}

.page-about .ab-role__face--back p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
}

.page-about .ab-role__no {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--copper);
}

.page-about .ab-role__name {
  margin: 0;
  font-family: var(--font-head);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--green-deep);
}

.page-about .ab-role__hint {
  display: none;
  margin: 0;
  font-size: 13px;
  color: var(--gray);
}

.page-about .ab-team__note {
  display: grid;
  gap: 24px;
  margin-top: 38px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

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

.page-about .ab-team__noteText h3 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-size: 21px;
  font-weight: 700;
  color: var(--green-deep);
}

.page-about .ab-team__noteText p {
  margin: 0 0 14px;
}

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

/* ---------- 信条 ---------- */

.page-about .ab-creed__grid {
  display: grid;
  gap: 28px;
  margin-top: 28px;
}

.page-about .ab-creed__list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-creed__item {
  position: relative;
  padding: 22px 20px 22px 64px;
  background: var(--cream-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}

.page-about .ab-creed__item:hover {
  transform: translateY(-3px);
  border-color: var(--line-copper);
  box-shadow: var(--shadow-1);
}

.page-about .ab-creed__no {
  position: absolute;
  left: 20px;
  top: 22px;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--copper);
  opacity: .7;
}

.page-about .ab-creed__name {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 21px;
  font-weight: 700;
  color: var(--green-deep);
}

.page-about .ab-creed__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ab-ink);
  opacity: .86;
}

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

/* ---------- 足迹 ---------- */

.page-about .ab-footprint__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.page-about .ab-metric {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 18px;
  background: rgba(220, 227, 232, .34);
  border: 1px solid var(--line);
  border-left: 3px solid var(--copper);
  border-radius: var(--radius-sm);
}

.page-about .ab-metric__num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--green-deep);
}

.page-about .ab-metric__label {
  font-size: 14px;
  font-weight: 600;
  color: var(--green);
}

.page-about .ab-metric__note {
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
}

.page-about .ab-footprint__note {
  display: grid;
  gap: 20px;
  margin-top: 24px;
  padding: 26px 22px;
  border-radius: var(--radius);
  background: linear-gradient(140deg, var(--green) 0%, var(--green-deep) 100%);
  color: rgba(249, 246, 240, .88);
}

.page-about .ab-footprint__note p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
}

.page-about .ab-footprint__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 平板 ---------- */

@media (min-width: 700px) {
  .page-about .section {
    padding: 60px 0;
  }

  .page-about .ab-hero {
    padding: 52px 0 60px;
  }

  .page-about .ab-hero__title {
    font-size: 38px;
  }

  .page-about .ab-hero__statNum {
    font-size: 24px;
  }

  .page-about .ab-footprint__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .ab-footprint__note {
    padding: 30px 30px;
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 900px) {
  .page-about .section {
    padding: 74px 0;
  }

  .page-about .ab-hero {
    padding: 62px 0 72px;
  }

  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 52px;
    align-items: end;
  }

  .page-about .ab-hero__title {
    font-size: 48px;
    line-height: 1.2;
  }

  .page-about .ab-origin__grid {
    grid-template-columns: minmax(0, .86fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .ab-line {
    margin-top: 38px;
  }

  .page-about .ab-line__item {
    padding-bottom: 30px;
  }

  .page-about .ab-line__title {
    font-size: 20px;
  }

  .page-about .ab-team__note {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    gap: 46px;
    align-items: center;
    margin-top: 48px;
    padding-top: 36px;
  }

  .page-about .ab-creed__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .ab-footprint__note {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 42px;
    padding: 34px 36px;
  }
}

/* ---------- 角色卡翻转：仅在支持悬停的桌面环境启用 ---------- */

@media (hover: hover) and (min-width: 700px) {
  .page-about .ab-role__hint {
    display: block;
  }

  .page-about .ab-role:hover .ab-role__inner,
  .page-about .ab-role:focus .ab-role__inner,
  .page-about .ab-role:focus-within .ab-role__inner {
    transform: rotateY(180deg);
  }
}

/* ---------- 触屏与小屏：正反面直接铺开显示 ---------- */

@media (hover: none), (max-width: 699px) {
  .page-about .ab-role {
    min-height: 0;
  }

  .page-about .ab-role__inner {
    position: static;
    transform: none;
  }

  .page-about .ab-role__face {
    position: static;
    inset: auto;
    transform: none;
    backface-visibility: visible;
    -webkit-backface-visibility: visible;
    border-radius: var(--radius);
  }

  .page-about .ab-role__face--front {
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
  }

  .page-about .ab-role__face--back {
    transform: none;
    margin-top: 6px;
    border-radius: 0 0 var(--radius) var(--radius);
  }
}

/* ---------- 动效克制 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-role__inner,
  .page-about .ab-line__body,
  .page-about .ab-creed__item {
    transition: none;
  }

  .page-about .ab-creed__item:hover {
    transform: none;
  }

  .page-about .ab-line__item:hover .ab-line__body {
    transform: none;
  }
}