/* ===== 品牌概况 · 页面专属样式（作用域 .page-about） ===== */
.page-about {
  --ab-hair: rgba(255, 255, 255, .09);
  --ab-hair-strong: rgba(255, 255, 255, .18);
  --ab-orange-hi: #FF7E36;
  --ab-orange-soft: rgba(255, 106, 26, .12);
  display: block;
  color: var(--hh-ice);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

.page-about .ab-wrap {
  width: 100%;
  max-width: var(--hh-max);
  margin-inline: auto;
  padding-inline: var(--hh-gutter);
}

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

.page-about .ab-num,
.page-about .ab-stats__v,
.page-about .ab-metric__v,
.page-about .ab-band__num,
.page-about .ab-coord__idx,
.page-about .ab-tl__marker,
.page-about .ab-tl__year,
.page-about .ab-who__no,
.page-about .ab-kicker,
.page-about .ab-legend__num {
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 面包屑 ---------- */
.page-about .ab-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 20px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--hh-mist);
}

.page-about .ab-crumbs a {
  color: var(--hh-mist);
  text-decoration: none;
  transition: color .2s var(--hh-ease);
}

.page-about .ab-crumbs a:hover,
.page-about .ab-crumbs a:focus-visible {
  color: var(--hh-orange);
}

.page-about .ab-crumbs__sep {
  color: rgba(143, 160, 196, .45);
}

.page-about .ab-crumbs [aria-current="page"] {
  color: var(--hh-ice);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  padding-block: 26px 46px;
}

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

.page-about .ab-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 20px;
  padding: 6px 14px 6px 8px;
  border: 1px solid var(--hh-glass-line);
  border-radius: 999px;
  background: var(--hh-glass);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--hh-mist);
}

.page-about .ab-kicker__no {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--ab-orange-soft);
  color: var(--hh-orange);
  font-size: 11px;
}

.page-about .ab-hero__title {
  position: relative;
  margin: 0 0 24px;
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(29px, 7.6vw, 58px);
  line-height: 1.09;
  letter-spacing: -.02em;
  color: var(--hh-ice);
}

.page-about .ab-hero__title::after {
  content: "";
  display: block;
  width: 96px;
  height: 5px;
  margin-top: 22px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--hh-orange), var(--hh-yellow));
}

.page-about .ab-hero__lede {
  max-width: 60ch;
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--hh-mist);
}

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

.page-about .ab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: transform .22s var(--hh-ease), background-color .22s var(--hh-ease),
    border-color .22s var(--hh-ease), color .22s var(--hh-ease);
}

.page-about .ab-btn--solid {
  background: var(--hh-orange);
  border: 1px solid var(--hh-orange);
  color: #05101F;
}

.page-about .ab-btn--solid:hover,
.page-about .ab-btn--solid:focus-visible {
  background: var(--ab-orange-hi);
  border-color: var(--ab-orange-hi);
  transform: translateY(-2px);
}

.page-about .ab-btn--ghost {
  background: var(--hh-glass);
  border: 1px solid var(--hh-glass-line);
  color: var(--hh-ice);
}

.page-about .ab-btn--ghost:hover,
.page-about .ab-btn--ghost:focus-visible {
  border-color: var(--hh-orange);
  color: var(--hh-orange);
  transform: translateY(-2px);
}

.page-about .ab-hero__panel {
  position: relative;
  overflow: hidden;
  padding: 20px 20px 12px;
  border: 1px solid var(--hh-glass-line);
  border-radius: var(--hh-radius);
  background:
    linear-gradient(158deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .015)),
    var(--hh-deep);
}

.page-about .ab-hero__panel::before {
  content: "";
  position: absolute;
  top: -70px;
  right: -70px;
  width: 190px;
  height: 190px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 106, 26, .34), rgba(255, 106, 26, 0) 68%);
  pointer-events: none;
}

.page-about .ab-hero__panelTitle {
  margin: 0 0 12px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--hh-mist);
  text-transform: uppercase;
}

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

.page-about .ab-stats__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, .1);
}

.page-about .ab-stats__row:last-child {
  border-bottom: 0;
}

.page-about .ab-stats__k {
  font-size: 13px;
  letter-spacing: .03em;
  color: var(--hh-mist);
}

.page-about .ab-stats__v {
  font-size: 21px;
  line-height: 1.1;
  color: var(--hh-ice);
}

.page-about .ab-stats__v em {
  font-style: normal;
  font-size: 13px;
  color: var(--hh-orange);
}

/* ---------- 章节骨架 ---------- */
.page-about .ab-sec {
  padding-block: clamp(42px, 7vw, 80px);
}

.page-about .ab-sec + .ab-sec {
  border-top: 1px solid var(--ab-hair);
}

.page-about .ab-coord {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.page-about .ab-coord__idx {
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--hh-orange);
}

.page-about .ab-coord__rule {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 106, 26, .65), rgba(255, 106, 26, 0));
}

.page-about .ab-h2 {
  margin: 0 0 20px;
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(23px, 4.8vw, 38px);
  line-height: 1.2;
  letter-spacing: -.015em;
  color: var(--hh-ice);
}

.page-about .ab-h3 {
  margin: 0 0 7px;
  font-family: var(--f-display);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.4;
  color: var(--hh-ice);
}

.page-about .ab-p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--hh-mist);
}

.page-about .ab-p strong {
  font-weight: 500;
  color: var(--hh-ice);
  box-shadow: inset 0 -0.55em 0 rgba(255, 106, 26, .16);
}

.page-about .ab-p--wide {
  max-width: 66ch;
  margin-bottom: 26px;
}

.page-about .ab-cols {
  display: grid;
  gap: 26px;
}

.page-about .ab-side {
  padding: 18px 18px 6px;
  border-left: 2px solid var(--hh-orange);
  border-radius: 0 var(--hh-radius) var(--hh-radius) 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, .055), rgba(255, 255, 255, 0));
}

.page-about .ab-side__t {
  margin: 0 0 8px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--hh-teal);
}

.page-about .ab-side__d {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--hh-mist);
}

/* ---------- 谁在用 ---------- */
.page-about .ab-who {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ab-hair);
}

.page-about .ab-who__item {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 14px;
  padding: 22px 0;
  border-bottom: 1px solid var(--ab-hair);
  transition: background-color .25s var(--hh-ease);
}

.page-about .ab-who__item:hover {
  background: linear-gradient(90deg, rgba(255, 106, 26, .06), rgba(255, 106, 26, 0) 62%);
}

.page-about .ab-who__no {
  padding-top: 4px;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--hh-orange);
}

.page-about .ab-who__body .ab-p {
  margin-bottom: 0;
  max-width: 70ch;
}

/* ---------- 团队 ---------- */
.page-about .ab-ringwrap {
  display: grid;
  gap: 30px;
  margin-bottom: 34px;
}

.page-about .ab-ring {
  position: relative;
  width: 196px;
  height: 196px;
  margin-inline: auto;
  border-radius: 50%;
  background: conic-gradient(from -90deg,
      var(--hh-orange) 0deg 141.4deg,
      var(--hh-teal) 141.4deg 218.6deg,
      var(--hh-yellow) 218.6deg 334.3deg,
      var(--hh-mist) 334.3deg 360deg);
  filter: drop-shadow(0 14px 30px rgba(0, 0, 0, .45));
}

.page-about .ab-ring::after {
  content: "";
  position: absolute;
  inset: 27%;
  z-index: 0;
  border-radius: 50%;
  background: var(--hh-void);
  box-shadow: inset 0 0 0 1px var(--hh-glass-line);
}

.page-about .ab-ring__center {
  position: absolute;
  inset: 27%;
  z-index: 1;
  display: grid;
  place-content: center;
  text-align: center;
}

.page-about .ab-ring__num {
  display: block;
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  font-size: 32px;
  line-height: 1;
  color: var(--hh-ice);
}

.page-about .ab-ring__unit {
  display: block;
  margin-top: 4px;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--hh-mist);
}

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

.page-about .ab-legend__item {
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-about .ab-legend__dot {
  width: 12px;
  height: 12px;
  margin-top: 6px;
  border-radius: 3px;
  background: var(--hh-mist);
}

.page-about .ab-legend__dot[data-role="edit"] {
  background: var(--hh-orange);
}

.page-about .ab-legend__dot[data-role="analysis"] {
  background: var(--hh-teal);
}

.page-about .ab-legend__dot[data-role="product"] {
  background: var(--hh-yellow);
}

.page-about .ab-legend__dot[data-role="support"] {
  background: var(--hh-mist);
}

.page-about .ab-legend__name {
  margin: 0;
  font-size: 14px;
  font-weight: 500;
  color: var(--hh-ice);
}

.page-about .ab-legend__num {
  margin-right: 8px;
  font-size: 19px;
  color: var(--hh-ice);
}

.page-about .ab-legend__desc {
  margin: 4px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--hh-mist);
}

/* ---------- 图片容器 ---------- */
.page-about .ab-shot {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--hh-glass-line);
  border-radius: var(--hh-radius);
  background: var(--hh-deep);
}

.page-about .ab-shot__frame {
  position: relative;
  overflow: hidden;
}

.page-about .ab-shot__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 22, 51, .16), rgba(5, 11, 26, .68));
  pointer-events: none;
}

.page-about .ab-shot img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(.92) contrast(1.04);
}

.page-about .ab-shot figcaption {
  padding: 11px 16px;
  border-top: 1px solid var(--ab-hair);
  background: rgba(255, 255, 255, .03);
  font-size: 12px;
  letter-spacing: .04em;
  line-height: 1.7;
  color: var(--hh-mist);
}

/* ---------- 时间轴 ---------- */
.page-about .ab-sec--timeline {
  background-image:
    linear-gradient(rgba(255, 255, 255, .028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .028) 1px, transparent 1px);
  background-size: 52px 52px;
}

.page-about .ab-timeline {
  position: relative;
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  top: 26px;
  bottom: 26px;
  left: 29px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg,
      rgba(255, 106, 26, 0),
      rgba(255, 106, 26, .6) 12%,
      rgba(255, 255, 255, .14) 55%,
      rgba(34, 211, 184, .45) 100%);
}

.page-about .ab-tl {
  position: relative;
  display: grid;
  grid-template-columns: 60px minmax(0, 1fr);
  gap: 18px;
  padding-bottom: 30px;
}

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

.page-about .ab-tl__marker {
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  border: 1px solid var(--hh-glass-line);
  border-radius: 50%;
  background: var(--hh-deep);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--hh-mist);
  transition: border-color .32s var(--hh-ease), color .32s var(--hh-ease),
    box-shadow .32s var(--hh-ease), transform .32s var(--hh-ease);
}

.page-about .ab-tl.is-inview .ab-tl__marker {
  border-color: var(--hh-orange);
  color: var(--hh-orange);
  box-shadow: 0 0 0 7px rgba(255, 106, 26, .08);
}

.page-about .ab-tl:hover .ab-tl__marker {
  border-color: var(--hh-orange);
  color: var(--hh-orange);
  transform: translateY(-2px);
}

.page-about .ab-tl__year {
  margin: 2px 0 6px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--hh-yellow);
}

.page-about .ab-tl__body .ab-p {
  margin-bottom: 0;
  max-width: 62ch;
}

/* ---------- 覆盖与流程 ---------- */
.page-about .ab-metrics {
  margin: 0 0 40px;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ab-hair);
  border: 1px solid var(--ab-hair);
  border-radius: var(--hh-radius);
  overflow: hidden;
}

.page-about .ab-metric {
  padding: 20px 16px;
  background: var(--hh-deep);
}

.page-about .ab-metric__v {
  margin: 0 0 8px;
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 5.4vw, 38px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--hh-orange);
}

.page-about .ab-metric__k {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--hh-mist);
}

.page-about .ab-quality {
  display: grid;
  gap: 32px;
}

.page-about .ab-flow {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--ab-hair);
  border: 1px solid var(--ab-hair);
  border-radius: var(--hh-radius);
  overflow: hidden;
}

.page-about .ab-flow__step {
  position: relative;
  padding: 15px 16px 15px 20px;
  background: var(--hh-orbit);
}

.page-about .ab-flow__step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--hh-orange), var(--hh-yellow));
  opacity: .7;
}

.page-about .ab-flow__t {
  display: block;
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--hh-yellow);
}

.page-about .ab-flow__d {
  display: block;
  margin-top: 3px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--hh-ice);
}

/* ---------- 合作生态 ---------- */
.page-about .ab-band {
  position: relative;
  overflow: hidden;
  margin-bottom: 30px;
  border: 1px solid var(--hh-glass-line);
  border-radius: var(--hh-radius);
  background: var(--hh-deep);
}

.page-about .ab-band img {
  display: block;
  width: 100%;
  height: clamp(180px, 30vw, 320px);
  max-width: 100%;
  object-fit: cover;
  filter: saturate(.95);
}

.page-about .ab-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(102deg, rgba(5, 11, 26, .93) 6%, rgba(5, 11, 26, .58) 50%, rgba(255, 106, 26, .18) 100%);
  pointer-events: none;
}

.page-about .ab-band__text {
  position: absolute;
  left: 22px;
  bottom: 20px;
  z-index: 1;
  max-width: 30ch;
}

.page-about .ab-band__num {
  margin: 0;
  font-size: clamp(38px, 8vw, 64px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--hh-ice);
}

.page-about .ab-band__num span {
  color: var(--hh-orange);
}

.page-about .ab-band__cap {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--hh-mist);
}

.page-about .ab-collab {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--ab-hair);
  border: 1px solid var(--ab-hair);
  border-radius: var(--hh-radius);
  overflow: hidden;
}

.page-about .ab-collab__item {
  padding: 20px 18px;
  background: var(--hh-deep);
  transition: background-color .25s var(--hh-ease);
}

.page-about .ab-collab__item:hover {
  background: var(--hh-orbit);
}

.page-about .ab-collab__item .ab-p {
  margin-bottom: 0;
  font-size: 14px;
}

/* ---------- 尾段 ---------- */
.page-about .ab-sec--next {
  padding-bottom: clamp(56px, 9vw, 96px);
}

.page-about .ab-next {
  display: grid;
  gap: 14px;
}

.page-about .ab-next__card {
  display: grid;
  gap: 6px;
  padding: 22px 20px;
  border: 1px solid var(--hh-glass-line);
  border-radius: var(--hh-radius);
  background:
    linear-gradient(150deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .012)),
    var(--hh-deep);
  text-decoration: none;
  transition: transform .22s var(--hh-ease), border-color .22s var(--hh-ease);
}

.page-about .ab-next__card:hover,
.page-about .ab-next__card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--hh-orange);
}

.page-about .ab-next__k {
  font-family: var(--f-display);
  font-weight: 900;
  font-size: 19px;
  color: var(--hh-ice);
}

.page-about .ab-next__d {
  font-size: 14px;
  line-height: 1.75;
  color: var(--hh-mist);
}

.page-about .ab-next__go {
  margin-top: 6px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--hh-orange);
}

.page-about .ab-next__more {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--hh-mist);
}

.page-about .ab-next__more a {
  color: var(--hh-ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 26, .55);
  padding-bottom: 1px;
  transition: color .2s var(--hh-ease);
}

.page-about .ab-next__more a:hover,
.page-about .ab-next__more a:focus-visible {
  color: var(--hh-orange);
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-about .ab-metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 860px) {
  .page-about .ab-ringwrap {
    grid-template-columns: 230px minmax(0, 1fr);
    align-items: center;
    gap: 44px;
  }

  .page-about .ab-cols {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .ab-quality {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 40px;
    align-items: start;
  }

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

  .page-about .ab-band__text {
    left: 30px;
    bottom: 26px;
  }
}

@media (min-width: 1020px) {
  .page-about .ab-hero {
    padding-block: 34px 64px;
  }

  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .ab-tl {
    grid-template-columns: 60px minmax(0, 1fr) minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }

  .page-about .ab-tl__body {
    grid-column: 2 / 4;
  }

  .page-about .ab-who__item {
    grid-template-columns: 38px minmax(0, 5fr) minmax(0, 5fr);
    gap: 24px;
  }

  .page-about .ab-who__body {
    grid-column: 2 / 4;
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 5fr);
    gap: 24px;
    align-items: baseline;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-btn,
  .page-about .ab-next__card,
  .page-about .ab-tl__marker {
    transition: none;
  }

  .page-about .ab-next__card:hover,
  .page-about .ab-next__card:focus-visible,
  .page-about .ab-btn:hover,
  .page-about .ab-tl:hover .ab-tl__marker {
    transform: none;
  }
}