.page-about {
  position: relative;
  padding-top: clamp(84px, 11vw, 122px);
  padding-bottom: clamp(56px, 8vw, 96px);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-about .hx-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.86rem;
  color: var(--hx-muted);
}
.page-about .hx-breadcrumb a {
  color: var(--hx-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}
.page-about .hx-breadcrumb a:hover,
.page-about .hx-breadcrumb a:focus-visible {
  color: var(--hx-cyan);
}
.page-about .hx-breadcrumb [aria-current="page"] {
  color: var(--hx-text);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  padding: clamp(26px, 4vw, 44px) 0 clamp(40px, 6vw, 76px);
}
.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: -10% -20% 30% 20%;
  background: radial-gradient(52% 60% at 78% 22%, rgba(124, 58, 237, 0.28), transparent 68%),
    radial-gradient(40% 46% at 12% 6%, rgba(34, 211, 238, 0.14), transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.page-about .ab-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 52px);
  align-items: end;
}
.page-about .ab-hero-title {
  margin: 18px 0 22px;
  font-family: var(--hx-font-display);
  font-weight: 900;
  font-size: clamp(2.35rem, 7.4vw, 5rem);
  line-height: 1.04;
  letter-spacing: -0.032em;
  color: var(--hx-text);
}
.page-about .ab-hero-mark {
  background: linear-gradient(96deg, var(--hx-cyan), var(--hx-violet) 72%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.page-about .ab-hero-lede {
  max-width: 62ch;
}
.page-about .ab-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .ab-hero-aside {
  border: 1px solid var(--hx-line);
  border-radius: var(--hx-radius-lg);
  padding: clamp(20px, 3vw, 26px);
  background: linear-gradient(158deg, rgba(124, 58, 237, 0.2), rgba(11, 27, 58, 0.92) 58%, rgba(7, 18, 40, 0.96));
  box-shadow: var(--hx-shadow-panel);
}
.page-about .ab-aside-title {
  margin: 0 0 10px;
  font-family: var(--hx-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--hx-cyan);
}
.page-about .ab-readouts {
  margin: 0;
}
.page-about .ab-readout {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--hx-line);
}
.page-about .ab-readout:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.page-about .ab-readout-key {
  font-family: var(--hx-font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--hx-muted);
}
.page-about .ab-readout-val {
  margin: 0;
  font-family: var(--hx-font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--hx-text);
}

/* ---------- 章节索引 ---------- */
.page-about .ab-index {
  position: sticky;
  top: 82px;
  z-index: 4;
  padding: 10px 0;
  border-top: 1px solid var(--hx-line);
  border-bottom: 1px solid var(--hx-line);
  background: rgba(5, 8, 22, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.page-about .ab-index-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  overflow-x: auto;
  scrollbar-width: none;
}
.page-about .ab-index-inner::-webkit-scrollbar {
  display: none;
}
.page-about .ab-index-label {
  flex: 0 0 auto;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--hx-muted);
}
.page-about .ab-index-list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .ab-index-list a {
  display: inline-block;
  white-space: nowrap;
  padding: 7px 14px;
  border: 1px solid transparent;
  border-radius: var(--hx-pill);
  font-size: 0.85rem;
  color: var(--hx-muted);
  text-decoration: none;
  transition: color 0.22s ease, border-color 0.22s ease, background-color 0.22s ease;
}
.page-about .ab-index-list a:hover,
.page-about .ab-index-list a:focus-visible {
  color: var(--hx-text);
  border-color: rgba(34, 211, 238, 0.6);
  background: var(--hx-cyan-soft);
}

/* ---------- 通用章节 ---------- */
.page-about .ab-section {
  padding: clamp(46px, 6vw, 86px) 0;
}
.page-about .ab-section-head {
  max-width: 74ch;
}
.page-about .ab-section-head .hx-title {
  margin-top: 14px;
}
.page-about .ab-section-head .hx-lede {
  margin-top: 14px;
}
.page-about .ab-narrow {
  max-width: 760px;
}
.page-about .ab-narrow .hx-title {
  margin-top: 14px;
}
.page-about .ab-narrow > p {
  margin-top: 16px;
}

/* ---------- 我们是谁 ---------- */
.page-about .ab-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}
.page-about .ab-split-text .hx-title {
  margin: 14px 0 18px;
}
.page-about .ab-split-text p {
  margin: 0 0 14px;
  color: var(--hx-muted);
  line-height: 1.85;
}
.page-about .ab-split-media {
  position: relative;
  margin: 0;
}
.page-about .ab-split-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--hx-radius-lg);
  border: 1px solid var(--hx-line);
  box-shadow: var(--hx-shadow-panel);
}
.page-about .ab-split-media::after {
  content: "";
  position: absolute;
  inset: auto -6% -8% 30%;
  height: 46%;
  border-radius: 50%;
  background: radial-gradient(50% 50% at 50% 50%, rgba(124, 58, 237, 0.34), transparent 72%);
  filter: blur(26px);
  pointer-events: none;
  z-index: -1;
}
.page-about .ab-split-media figcaption {
  margin-top: 14px;
  font-family: var(--hx-font-mono);
  font-size: 0.76rem;
  line-height: 1.7;
  color: var(--hx-muted);
}

/* ---------- 数据读卡 ---------- */
.page-about .ab-metrics {
  padding: clamp(8px, 2vw, 18px) 0 clamp(36px, 5vw, 62px);
}
.page-about .ab-metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.page-about .ab-metric {
  padding: 20px 18px;
  border: 1px solid var(--hx-line);
  border-radius: var(--hx-radius-md);
  background: linear-gradient(180deg, rgba(11, 27, 58, 0.95), rgba(7, 18, 40, 0.7));
}
.page-about .ab-metric-num {
  display: block;
  font-family: var(--hx-font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 4.4vw, 2.85rem);
  line-height: 1;
  letter-spacing: -0.025em;
  color: var(--hx-white);
}
.page-about .ab-metric-num em {
  margin-left: 4px;
  font-style: normal;
  font-size: 0.46em;
  color: var(--hx-cyan);
}
.page-about .ab-metric-label {
  display: block;
  margin-top: 10px;
  font-family: var(--hx-font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--hx-muted);
}

/* ---------- 巡检节奏 ---------- */
.page-about .ab-cycle-list {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}
.page-about .ab-cycle-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 16px 18px;
  border: 1px solid var(--hx-line);
  border-left: 3px solid var(--hx-violet);
  border-radius: var(--hx-radius-sm);
  background: rgba(11, 27, 58, 0.55);
}
.page-about .ab-cycle-when {
  font-family: var(--hx-font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--hx-cyan);
}
.page-about .ab-cycle-what {
  font-size: 0.96rem;
  color: var(--hx-muted);
  line-height: 1.7;
}

/* ---------- 团队 ---------- */
.page-about .ab-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: clamp(28px, 4vw, 40px);
}
.page-about .ab-team-card {
  padding: clamp(20px, 3vw, 28px);
}
.page-about .ab-team-idx {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--hx-violet);
}
.page-about .ab-team-name {
  margin: 10px 0 10px;
  font-family: var(--hx-font-display);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--hx-text);
}
.page-about .ab-team-desc {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--hx-muted);
}
.page-about .ab-dot-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}
.page-about .ab-dot-list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--hx-muted);
}
.page-about .ab-dot-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--hx-cyan);
  transform: rotate(45deg);
  box-shadow: 0 0 9px rgba(34, 211, 238, 0.6);
}

/* 折叠面板（组内覆盖） */
.page-about .hx-collapse {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--hx-line);
}
.page-about .hx-collapse-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  font-family: var(--hx-font-mono);
  font-size: 0.79rem;
  letter-spacing: 0.06em;
  color: var(--hx-cyan);
  text-align: left;
}
.page-about .hx-collapse-trigger::after {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.25s ease;
}
.page-about .hx-collapse-trigger[aria-expanded="true"]::after {
  transform: rotate(-135deg);
}
.page-about .hx-collapse-body {
  padding-top: 14px;
}

/* ---------- 内容分类 ---------- */
.page-about .ab-cat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: clamp(28px, 4vw, 40px);
}
.page-about .ab-cat {
  padding: 22px;
  border: 1px solid var(--hx-line);
  border-radius: var(--hx-radius-md);
  background: linear-gradient(180deg, rgba(11, 27, 58, 0.62), rgba(7, 18, 40, 0.5));
  transition: transform 0.28s ease, border-color 0.28s ease;
}
.page-about .ab-cat:hover {
  transform: translateY(-3px);
  border-color: rgba(34, 211, 238, 0.5);
}
.page-about .ab-cat-idx {
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--hx-violet);
}
.page-about .ab-cat h3 {
  margin: 10px 0 8px;
  font-family: var(--hx-font-display);
  font-weight: 700;
  font-size: 1.12rem;
  color: var(--hx-text);
}
.page-about .ab-cat p {
  margin: 0 0 14px;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--hx-muted);
}
.page-about .ab-cat a {
  font-family: var(--hx-font-mono);
  font-size: 0.82rem;
  color: var(--hx-cyan);
  text-decoration: none;
}
.page-about .ab-cat a:hover,
.page-about .ab-cat a:focus-visible {
  text-decoration: underline;
}

/* ---------- 服务范围 ---------- */
.page-about .ab-region {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  align-items: center;
  margin-top: clamp(30px, 4.5vw, 48px);
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--hx-line);
  border-radius: var(--hx-radius-lg);
  background: radial-gradient(120% 130% at 4% 0%, rgba(34, 211, 238, 0.12), rgba(7, 18, 40, 0.85) 62%);
}
.page-about .ab-region-media {
  margin: 0;
}
.page-about .ab-region-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--hx-radius-md);
  border: 1px solid var(--hx-line);
}
.page-about .ab-region-text h3 {
  margin: 0 0 12px;
  font-family: var(--hx-font-display);
  font-weight: 800;
  font-size: clamp(1.2rem, 2.4vw, 1.6rem);
  line-height: 1.35;
  color: var(--hx-text);
}
.page-about .ab-region-text p {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--hx-muted);
}

/* ---------- 版本演进 ---------- */
.page-about .ab-versions-media {
  margin: clamp(26px, 4vw, 40px) 0 0;
}
.page-about .ab-versions-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--hx-radius-lg);
  border: 1px solid var(--hx-line);
  box-shadow: var(--hx-shadow-panel);
}
.page-about .ab-tl {
  position: relative;
  margin: clamp(30px, 4vw, 46px) 0 0;
  padding: 0;
  list-style: none;
}
.page-about .ab-tl::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--hx-violet), var(--hx-cyan) 78%, transparent);
}
.page-about .ab-tl-item {
  position: relative;
  padding: 0 0 28px 40px;
}
.page-about .ab-tl-item:last-child {
  padding-bottom: 0;
}
.page-about .ab-tl-item::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid var(--hx-cyan);
  background: var(--hx-void);
  box-shadow: 0 0 14px rgba(34, 211, 238, 0.6);
}
.page-about .ab-tl-item.is-current::before {
  background: var(--hx-cyan);
  border-color: var(--hx-cyan);
}
.page-about .ab-tl-ver {
  display: inline-block;
  margin-bottom: 8px;
  padding: 3px 10px;
  border-radius: var(--hx-pill);
  border: 1px solid rgba(124, 58, 237, 0.5);
  background: var(--hx-violet-soft);
  color: var(--hx-text);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
}
.page-about .ab-tl-body h3 {
  margin: 0 0 8px;
  font-family: var(--hx-font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--hx-text);
}
.page-about .ab-tl-body p {
  margin: 0;
  max-width: 68ch;
  font-size: 0.96rem;
  line-height: 1.82;
  color: var(--hx-muted);
}

/* ---------- 合作生态 ---------- */
.page-about .ab-domain-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: clamp(28px, 4vw, 40px);
}
.page-about .ab-domain {
  padding: 20px;
  border: 1px solid var(--hx-line);
  border-radius: var(--hx-radius-md);
  background: linear-gradient(180deg, rgba(124, 58, 237, 0.14), rgba(7, 18, 40, 0.72));
  transition: border-color 0.26s ease, background-color 0.26s ease;
}
.page-about .ab-domain:hover {
  border-color: rgba(34, 211, 238, 0.5);
}
.page-about .ab-domain::before {
  content: "";
  display: block;
  width: 24px;
  height: 28px;
  margin-bottom: 14px;
  background: linear-gradient(150deg, var(--hx-cyan), var(--hx-violet));
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}
.page-about .ab-domain h3 {
  margin: 0 0 8px;
  font-family: var(--hx-font-display);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--hx-text);
}
.page-about .ab-domain p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--hx-muted);
}
.page-about .ab-honor {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: clamp(22px, 3vw, 32px);
  padding: 20px 22px;
  border: 1px dashed rgba(251, 146, 60, 0.42);
  border-radius: var(--hx-radius-md);
  background: var(--hx-amber-soft);
}
.page-about .ab-honor-num {
  flex: 0 0 auto;
  font-family: var(--hx-font-display);
  font-weight: 900;
  font-size: clamp(2rem, 4vw, 2.6rem);
  line-height: 1;
  color: var(--hx-amber);
}
.page-about .ab-honor p {
  margin: 0;
  max-width: 62ch;
  font-size: 0.96rem;
  line-height: 1.78;
  color: var(--hx-text);
}

/* ---------- 结尾引导 ---------- */
.page-about .ab-cta-wrap {
  padding: clamp(30px, 5vw, 56px) 0 0;
}
.page-about .ab-cta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  align-items: center;
  padding: clamp(26px, 4vw, 44px);
  border: 1px solid rgba(124, 58, 237, 0.42);
  border-radius: var(--hx-radius-lg);
  background: radial-gradient(120% 150% at 100% 0%, rgba(124, 58, 237, 0.32), rgba(7, 18, 40, 0.92) 62%);
  box-shadow: var(--hx-shadow-panel);
}
.page-about .ab-cta-title {
  margin: 0 0 12px;
  font-family: var(--hx-font-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 3vw, 1.95rem);
  line-height: 1.28;
  color: var(--hx-text);
}
.page-about .ab-cta-text {
  margin: 0;
  max-width: 58ch;
  font-size: 0.98rem;
  line-height: 1.82;
  color: var(--hx-muted);
}
.page-about .ab-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .ab-cat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .ab-domain-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about .ab-metrics-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }
  .page-about .ab-cycle-item {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.6fr) auto;
    align-items: center;
    gap: 18px;
  }
  .page-about .ab-team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .ab-cta {
    grid-template-columns: minmax(0, 1.5fr) auto;
  }
  .page-about .ab-cta-actions {
    justify-content: flex-end;
  }
}

@media (min-width: 960px) {
  .page-about .ab-hero-inner {
    grid-template-columns: minmax(0, 1.6fr) minmax(272px, 0.85fr);
  }
  .page-about .ab-split {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  }
  .page-about .ab-region {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 30px;
  }
}

@media (min-width: 1040px) {
  .page-about .ab-cat-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .ab-domain-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}