.page-about {
  --ab-line: rgba(242, 193, 78, 0.16);
  --ab-line-strong: rgba(242, 193, 78, 0.34);
  --ab-solid: #2A1013;
  --ab-glass: rgba(61, 20, 24, 0.62);
  color: var(--qz-cream);
}

/* ---------- 面包屑 ---------- */
.page-about .ab-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--qz-muted);
  margin-bottom: 26px;
}

.page-about .ab-crumb a {
  color: var(--qz-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms var(--qz-ease), border-color 160ms var(--qz-ease);
}

.page-about .ab-crumb a:hover,
.page-about .ab-crumb a:focus-visible {
  color: var(--qz-gold);
  border-bottom-color: var(--qz-gold);
  outline: none;
}

.page-about .ab-crumb [aria-current="page"] {
  color: var(--qz-gold);
}

/* ---------- 首屏 ---------- */
.page-about .ab-head {
  position: relative;
  overflow: hidden;
}

.page-about .ab-head::before {
  content: "";
  position: absolute;
  top: -26%;
  right: -14%;
  width: 68%;
  height: 150%;
  background: linear-gradient(152deg, rgba(176, 18, 27, 0.52), rgba(42, 16, 19, 0) 62%);
  transform: skewX(-14deg);
  pointer-events: none;
}

.page-about .ab-head::after {
  content: "";
  position: absolute;
  left: -8%;
  bottom: -38%;
  width: 46%;
  height: 78%;
  background: radial-gradient(circle at 50% 50%, rgba(242, 193, 78, 0.14), rgba(242, 193, 78, 0) 68%);
  pointer-events: none;
}

.page-about .ab-head .qz-container {
  position: relative;
  z-index: 1;
}

.page-about .ab-head__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
}

.page-about .ab-head__copy .qz-lead {
  margin-top: 18px;
}

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

.page-about .ab-stat {
  padding: 18px 16px;
  border-radius: var(--qz-radius);
  background: var(--ab-glass);
  border: 1px solid var(--qz-glass-line);
  backdrop-filter: blur(9px);
  transition: border-color 160ms var(--qz-ease), transform 160ms var(--qz-ease);
}

.page-about .ab-stat:hover {
  border-color: var(--ab-line-strong);
  transform: translateY(-2px);
}

.page-about .ab-stat__num {
  display: block;
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--qz-gold);
}

.page-about .ab-stat__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--qz-muted);
}

/* ---------- 通用小标题区 ---------- */
.page-about .ab-sec {
  margin-bottom: 40px;
}

.page-about .ab-sec__lead {
  margin-top: 14px;
}

.page-about .qz-prose {
  max-width: 42em;
  line-height: 1.8;
}

.page-about .ab-slash {
  display: block;
  height: 8px;
  width: 190px;
  max-width: 60%;
  margin: 0 0 24px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--qz-red), var(--qz-gold) 62%, rgba(242, 193, 78, 0));
  transform-origin: left center;
}

.page-about .ab-slash--a { transform: skewX(-18deg); }
.page-about .ab-slash--b { transform: skewX(-11deg); }
.page-about .ab-slash--c { transform: skewX(-5deg); }

/* ---------- 横幅 ---------- */
.page-about .ab-banner {
  margin-bottom: 54px;
}

.page-about .ab-banner img,
.page-about .ab-levels__media img,
.page-about .ab-shanxi__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 时间轴 ---------- */
.page-about .ab-tl {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .ab-tl__row {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 42px;
}

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

.page-about .ab-tl__rail {
  position: relative;
  display: flex;
  justify-content: center;
  padding-top: 10px;
}

.page-about .ab-tl__rail::before {
  content: "";
  position: absolute;
  top: 38px;
  bottom: -42px;
  width: 1px;
  background: linear-gradient(180deg, var(--qz-gold), rgba(242, 193, 78, 0.05));
}

.page-about .ab-tl__row:last-child .ab-tl__rail::before {
  display: none;
}

.page-about .ab-tl__dot {
  display: block;
  flex: none;
  fill: var(--qz-ink-2);
  stroke: var(--qz-gold);
  stroke-width: 2;
}

.page-about .ab-tl__card {
  padding: 22px 20px;
  border-radius: var(--qz-radius-lg);
  border: 1px solid var(--qz-glass-line);
  background: var(--ab-glass);
  backdrop-filter: blur(10px);
  transition: border-color 160ms var(--qz-ease), transform 160ms var(--qz-ease);
}

.page-about .ab-tl__card--solid {
  background: var(--ab-solid);
  border-color: var(--ab-line);
}

.page-about .ab-tl__card:hover {
  transform: translateY(-2px);
  border-color: var(--ab-line-strong);
}

.page-about .ab-tl__stage {
  display: inline-block;
  margin: 0 0 14px;
  padding: 4px 13px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--qz-gold);
  border: 1px solid var(--ab-line-strong);
  border-radius: 999px;
}

.page-about .ab-tl__card .qz-h3 {
  margin: 0 0 12px;
}

.page-about .ab-tl__points {
  list-style: none;
  margin: 18px 0 0;
  padding: 16px 0 0;
  display: grid;
  gap: 9px;
  border-top: 1px dashed rgba(242, 193, 78, 0.22);
}

.page-about .ab-tl__points li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--qz-muted);
}

.page-about .ab-tl__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--qz-red-hot);
}

/* ---------- 房间分级 ---------- */
.page-about .ab-rooms__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .ab-room {
  position: relative;
  overflow: hidden;
  padding: 26px 22px 24px;
  border-radius: var(--qz-radius-lg);
  background: var(--ab-solid);
  border: 1px solid var(--ab-line);
  transition: transform 160ms var(--qz-ease), border-color 160ms var(--qz-ease);
}

.page-about .ab-room::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -70px;
  width: 190px;
  height: 190px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(176, 18, 27, 0.55), rgba(176, 18, 27, 0) 70%);
  pointer-events: none;
}

.page-about .ab-room > * {
  position: relative;
  z-index: 1;
}

.page-about .ab-room:hover {
  transform: translateY(-2px);
  border-color: var(--ab-line-strong);
}

.page-about .ab-room__idx {
  display: block;
  margin-bottom: 12px;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--qz-gold);
}

.page-about .ab-room .qz-h3 {
  margin: 0 0 12px;
}

.page-about .ab-room__note {
  margin: 16px 0 0;
  padding-top: 13px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--qz-gold-soft);
  border-top: 1px dashed rgba(242, 193, 78, 0.24);
}

/* ---------- 等级阶梯 ---------- */
.page-about .ab-ladder {
  list-style: none;
  margin: 0 0 34px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.page-about .ab-ladder__item {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 8px;
  padding: 16px 10px 14px;
  text-align: center;
  border-radius: var(--qz-radius);
  background: rgba(42, 16, 19, 0.92);
  border: 1px solid var(--ab-line);
}

.page-about .ab-ladder__no {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--qz-muted);
}

.page-about .ab-ladder__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--qz-cream);
}

.page-about .ab-ladder__bar {
  display: block;
  width: 100%;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--qz-gold-soft), var(--qz-gold));
}

.page-about .ab-ladder__item:nth-child(1) .ab-ladder__bar { height: 14px; }
.page-about .ab-ladder__item:nth-child(2) .ab-ladder__bar { height: 22px; }
.page-about .ab-ladder__item:nth-child(3) .ab-ladder__bar { height: 32px; }
.page-about .ab-ladder__item:nth-child(4) .ab-ladder__bar { height: 44px; }
.page-about .ab-ladder__item:nth-child(5) .ab-ladder__bar { height: 58px; }
.page-about .ab-ladder__item:nth-child(6) .ab-ladder__bar { height: 74px; }

.page-about .ab-ladder__item:nth-child(1) { border-color: rgba(154, 143, 134, 0.28); }
.page-about .ab-ladder__item:nth-child(2) { border-color: rgba(245, 239, 230, 0.24); }
.page-about .ab-ladder__item:nth-child(3) { border-color: rgba(242, 193, 78, 0.32); }
.page-about .ab-ladder__item:nth-child(4) { border-color: rgba(242, 193, 78, 0.46); }
.page-about .ab-ladder__item:nth-child(5) { border-color: rgba(242, 193, 78, 0.68); }
.page-about .ab-ladder__item:nth-child(6) { border-color: rgba(242, 193, 78, 0.92); }

.page-about .ab-levels__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-about .ab-levels__caption {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--qz-muted);
}

/* ---------- 折叠面板 ---------- */
.page-about .ab-acc {
  display: grid;
  gap: 10px;
}

.page-about .ab-acc .qz-acc__item {
  border-radius: var(--qz-radius);
  overflow: hidden;
}

.page-about .ab-acc .qz-acc__trigger {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 16px 18px;
  text-align: left;
  cursor: pointer;
  color: var(--qz-cream);
  background: rgba(42, 16, 19, 0.94);
  border: 1px solid var(--ab-line);
  border-radius: var(--qz-radius);
  transition: border-color 160ms var(--qz-ease), background 160ms var(--qz-ease);
}

.page-about .ab-acc .qz-acc__trigger:hover,
.page-about .ab-acc .qz-acc__trigger:focus-visible {
  border-color: var(--ab-line-strong);
  outline: none;
}

.page-about .ab-acc .qz-acc__trigger:focus-visible {
  box-shadow: 0 0 0 2px rgba(242, 193, 78, 0.55);
}

.page-about .ab-acc .qz-acc__trigger[aria-expanded="true"] {
  background: rgba(61, 20, 24, 0.94);
  border-color: var(--qz-gold);
}

.page-about .ab-acc__no {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--qz-gold);
}

.page-about .ab-acc__name {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-about .ab-acc__kpi {
  font-family: var(--qz-mono);
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--qz-gold-soft);
  background: rgba(176, 18, 27, 0.28);
  border: 1px solid rgba(242, 193, 78, 0.24);
  white-space: nowrap;
}

.page-about .ab-acc .qz-acc__inner {
  padding: 16px 18px 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--qz-muted);
}

.page-about .ab-acc .qz-acc__inner p {
  margin: 0 0 10px;
}

.page-about .ab-acc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .ab-acc__list li {
  position: relative;
  padding-left: 18px;
}

.page-about .ab-acc__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--qz-gold);
}

/* ---------- 服务团队 ---------- */
.page-about .ab-support__panel {
  position: relative;
  overflow: hidden;
  padding: 32px 22px;
  border-radius: var(--qz-radius-lg);
  border: 1px solid rgba(242, 193, 78, 0.2);
  background:
    radial-gradient(120% 140% at 88% 0%, rgba(224, 35, 52, 0.34), rgba(224, 35, 52, 0) 58%),
    linear-gradient(160deg, #2A1013, #1A0A0C);
}

.page-about .ab-support__panel .qz-h2 {
  margin: 10px 0 14px;
}

.page-about .ab-support__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.page-about .ab-support__chip {
  padding: 16px 14px;
  border-radius: var(--qz-radius);
  background: rgba(26, 10, 12, 0.72);
  border: 1px solid var(--ab-line);
  transition: border-color 160ms var(--qz-ease);
}

.page-about .ab-support__chip:hover {
  border-color: var(--ab-line-strong);
}

.page-about .ab-support__chip b {
  display: block;
  font-family: var(--qz-mono);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--qz-gold);
}

.page-about .ab-support__chip span {
  display: block;
  margin-top: 7px;
  font-size: 13px;
  color: var(--qz-muted);
}

.page-about .ab-support__foot {
  margin: 22px 0 0;
  padding-top: 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--qz-gold-soft);
  border-top: 1px solid var(--ab-line);
}

/* ---------- 山西地区 ---------- */
.page-about .ab-shanxi__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-about .ab-shanxi__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .ab-shanxi__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--qz-muted);
}

.page-about .ab-shanxi__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--qz-gold);
  transform: rotate(45deg);
}

.page-about .ab-shanxi__legal {
  margin: 24px 0 0;
  display: inline-block;
  padding: 8px 14px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--qz-gold-soft);
  border: 1px solid var(--ab-line-strong);
  border-radius: var(--qz-radius);
  background: rgba(42, 16, 19, 0.8);
}

.page-about .ab-shanxi__media {
  overflow: hidden;
  border-radius: var(--qz-radius-lg);
  border: 1px solid var(--ab-line);
  clip-path: polygon(0 0, 100% 4%, 100% 100%, 0 96%);
}

/* ---------- 年度节点 ---------- */
.page-about .ab-year__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .ab-year__item {
  position: relative;
  overflow: hidden;
  padding: 28px 22px 26px;
  border-radius: var(--qz-radius-lg);
  background: rgba(42, 16, 19, 0.88);
  border: 1px solid var(--ab-line);
  transition: transform 160ms var(--qz-ease), border-color 160ms var(--qz-ease);
}

.page-about .ab-year__item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--qz-red), var(--qz-gold));
}

.page-about .ab-year__item:hover {
  transform: translateY(-2px);
  border-color: var(--ab-line-strong);
}

.page-about .ab-year__season {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 13px;
  letter-spacing: 0.24em;
  color: var(--qz-gold);
}

.page-about .ab-year__item .qz-h3 {
  margin: 0 0 12px;
}

.page-about .ab-year__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--qz-muted);
}

/* ---------- 结尾指引 ---------- */
.page-about .ab-next__panel {
  display: grid;
  gap: 22px;
  padding: 30px 22px;
  border-radius: var(--qz-radius-lg);
  background: var(--ab-glass);
  border: 1px solid var(--ab-line-strong);
  backdrop-filter: blur(10px);
}

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

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

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

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

  .page-about .ab-ladder {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .ab-support__panel {
    padding: 44px 36px;
  }

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

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

  .page-about .ab-acc .qz-acc__inner {
    padding: 18px 22px 24px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about .ab-tl__row {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 22px;
    padding-bottom: 52px;
  }

  .page-about .ab-tl__rail {
    padding-top: 12px;
  }

  .page-about .ab-tl__rail::before {
    top: 44px;
    bottom: -52px;
  }

  .page-about .ab-tl__card {
    padding: 30px 34px;
  }

  .page-about .ab-tl__row--1 .ab-tl__card {
    margin-right: 22%;
  }

  .page-about .ab-tl__row--2 .ab-tl__card {
    margin-left: 5%;
    margin-right: 11%;
  }

  .page-about .ab-tl__row--3 .ab-tl__card {
    margin-left: 0;
    margin-right: 0;
  }
}

@media (min-width: 960px) {
  .page-about .ab-head__grid {
    grid-template-columns: 1.55fr 1fr;
    align-items: start;
    gap: 56px;
  }

  .page-about .ab-levels__grid {
    grid-template-columns: 0.85fr 1.15fr;
    align-items: start;
    gap: 46px;
  }

  .page-about .ab-shanxi__grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 52px;
  }

  .page-about .ab-next__panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 36px;
    padding: 34px 40px;
  }
}

@media (min-width: 1080px) {
  .page-about .ab-rooms__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-about .ab-room--1 { grid-column: span 7; }
  .page-about .ab-room--2 { grid-column: span 5; }
  .page-about .ab-room--3 { grid-column: span 5; }
  .page-about .ab-room--4 { grid-column: span 7; }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-stat,
  .page-about .ab-tl__card,
  .page-about .ab-room,
  .page-about .ab-year__item,
  .page-about .ab-support__chip {
    transition: none;
    transform: none;
  }
}