.page-about {
  --ab-line: rgba(18, 59, 99, 0.14);
  --ab-line-soft: rgba(18, 59, 99, 0.08);
  --ab-card: #ffffff;
  --ab-cut: 18px;
  background: var(--yx-mist);
  color: var(--yx-ink);
  font-family: var(--yx-sans);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-about a {
  color: var(--yx-blue);
}

/* ---------- 对开骨架 ---------- */
.page-about .ab-frame {
  max-width: var(--yx-shell);
  margin: 0 auto;
  padding: clamp(18px, 4vw, 40px) var(--yx-gutter) clamp(48px, 7vw, 88px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
}

.page-about .ab-body {
  min-width: 0;
}

@media (min-width: 960px) {
  .page-about .ab-frame {
    grid-template-columns: 222px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 76px);
  }
}

/* ---------- 左侧索引 ---------- */
.page-about .ab-side {
  border-top: 2px solid var(--yx-deep);
  padding-top: 14px;
}

.page-about .ab-side__label {
  margin: 0 0 12px;
  font-family: var(--yx-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--yx-gray);
}

.page-about .ab-side__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-side__list .yx-index__link {
  display: block;
  padding: 6px 0 6px 10px;
  border-left: 2px solid transparent;
  font-family: var(--yx-mono);
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--yx-gray);
  text-decoration: none;
  transition: color 0.22s var(--yx-ease), border-color 0.22s var(--yx-ease);
}

.page-about .ab-side__list .yx-index__link:hover,
.page-about .ab-side__list .yx-index__link:focus-visible,
.page-about .ab-side__list .yx-index__link.is-active {
  color: var(--yx-deep);
  border-left-color: var(--yx-orange);
}

@media (min-width: 960px) {
  .page-about .ab-side {
    position: sticky;
    top: 104px;
    align-self: start;
    max-height: calc(100vh - 140px);
    overflow-y: auto;
  }
  .page-about .ab-side__list {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  padding-bottom: clamp(24px, 4vw, 40px);
  isolation: isolate;
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: -10px -20% auto -10%;
  height: 340px;
  background-image:
    linear-gradient(var(--ab-line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--ab-line-soft) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 82%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 82%);
  pointer-events: none;
  z-index: -1;
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  right: -160px;
  top: -120px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle at 35% 35%, rgba(74, 143, 212, 0.26), transparent 68%);
  pointer-events: none;
  z-index: -1;
}

.page-about .ab-hero__kicker {
  margin: 18px 0 12px;
  font-family: var(--yx-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--yx-blue);
}

.page-about .ab-hero__title {
  margin: 0 0 18px;
  max-width: 22ch;
  font-size: clamp(1.85rem, 5vw, 2.9rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--yx-deep);
}

.page-about .ab-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(1rem, 1.4vw, 1.1rem);
  color: var(--yx-gray);
}

/* ---------- 指标条 ---------- */
.page-about .ab-stats {
  margin: clamp(26px, 4vw, 38px) 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ab-line);
  border: 1px solid var(--ab-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ab-cut)), calc(100% - var(--ab-cut)) 100%, 0 100%);
}

.page-about .ab-stats__item {
  background: var(--yx-mist);
  padding: 18px 16px 20px;
}

.page-about .ab-stats__item dt {
  margin: 0 0 8px;
  font-family: var(--yx-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--yx-gray);
}

.page-about .ab-stats__item dd {
  margin: 0;
  font-size: 0.94rem;
  color: var(--yx-ink);
}

.page-about .ab-stats__num {
  display: inline-block;
  margin-right: 6px;
  font-family: var(--yx-mono);
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1;
  color: var(--yx-orange);
}

@media (min-width: 720px) {
  .page-about .ab-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .ab-stats__num {
    font-size: 2.15rem;
  }
}

/* ---------- 章节通用 ---------- */
.page-about .ab-sec {
  padding: clamp(34px, 5.5vw, 62px) 0;
  border-top: 1px solid var(--ab-line);
  scroll-margin-top: 110px;
}

.page-about .ab-sec__num {
  margin: 0 0 10px;
  font-family: var(--yx-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--yx-orange);
}

.page-about .ab-sec__title {
  margin: 0 0 16px;
  max-width: 26ch;
  font-size: clamp(1.45rem, 3.1vw, 2.05rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--yx-deep);
}

.page-about .ab-sec__lead {
  margin: 0 0 22px;
  max-width: 64ch;
  color: var(--yx-gray);
}

.page-about .ab-p {
  margin: 0 0 16px;
  max-width: 68ch;
  color: var(--yx-ink);
  line-height: 1.85;
}

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

/* ---------- 时间轴 ---------- */
.page-about .ab-timeline {
  position: relative;
  margin: 10px 0 0;
  padding: 0 0 0 28px;
  list-style: none;
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--yx-bright) 0%, rgba(215, 227, 239, 0.1) 100%);
}

.page-about .ab-timeline__item {
  position: relative;
  padding: 0 0 30px;
}

.page-about .ab-timeline__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 6px;
  width: 13px;
  height: 13px;
  background: var(--yx-orange);
  clip-path: polygon(0 0, 100% 0, 100% 60%, 60% 100%, 0 100%);
  transition: background 0.22s var(--yx-ease);
}

.page-about .ab-timeline__item:hover::before {
  background: var(--yx-amber);
}

.page-about .ab-timeline__tag {
  display: inline-block;
  margin-bottom: 8px;
  padding: 3px 9px;
  border: 1px solid var(--ab-line);
  font-family: var(--yx-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--yx-blue);
  background: rgba(255, 255, 255, 0.7);
}

.page-about .ab-timeline__title {
  margin: 0 0 8px;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--yx-deep);
}

.page-about .ab-timeline__text {
  margin: 0;
  max-width: 62ch;
  color: var(--yx-ink);
  line-height: 1.85;
}

/* ---------- 图像容器 ---------- */
.page-about .ab-figure {
  margin: 26px 0 0;
}

.page-about .ab-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: linear-gradient(135deg, var(--yx-deep), var(--yx-mid));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ab-cut)), calc(100% - var(--ab-cut)) 100%, 0 100%);
}

.page-about .ab-figure figcaption {
  margin-top: 10px;
  font-family: var(--yx-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--yx-gray);
}

.page-about .ab-figure--banner {
  margin-top: 6px;
  margin-bottom: 26px;
}

/* ---------- 节点卡片 ---------- */
.page-about .ab-nodes {
  display: grid;
  gap: 16px;
  margin-top: 6px;
}

.page-about .ab-nodes__card {
  position: relative;
  padding: 24px 22px 26px;
  background: linear-gradient(158deg, var(--ab-card) 0%, var(--yx-mist) 100%);
  border: 1px solid var(--ab-line-soft);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ab-cut)), calc(100% - var(--ab-cut)) 100%, 0 100%);
}

.page-about .ab-nodes__card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 54px;
  height: 3px;
  background: var(--yx-orange);
}

.page-about .ab-nodes__tag {
  margin: 0 0 10px;
  font-family: var(--yx-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--yx-gray);
}

.page-about .ab-nodes__title {
  margin: 0 0 10px;
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--yx-deep);
}

.page-about .ab-nodes__text {
  margin: 0;
  font-size: 0.93rem;
  color: var(--yx-gray);
  line-height: 1.8;
}

@media (min-width: 780px) {
  .page-about .ab-nodes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 交付节奏深色块 ---------- */
.page-about .ab-cadence {
  position: relative;
  margin-top: clamp(26px, 4vw, 38px);
  padding: clamp(26px, 4vw, 40px);
  display: grid;
  gap: 22px;
  background: linear-gradient(126deg, var(--yx-deep) 0%, var(--yx-mid) 62%, var(--yx-blue) 100%);
  color: #fff;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
  overflow: hidden;
}

.page-about .ab-cadence::after {
  content: "";
  position: absolute;
  inset: -40% -10% auto auto;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle at 40% 40%, rgba(255, 122, 24, 0.3), transparent 66%);
  pointer-events: none;
}

@media (prefers-reduced-motion: no-preference) {
  .page-about .ab-cadence::after {
    animation: abDrift 16s ease-in-out infinite alternate;
  }
}

@keyframes abDrift {
  from { transform: translate3d(-3%, 0, 0); }
  to { transform: translate3d(6%, 4%, 0); }
}

.page-about .ab-cadence__item {
  position: relative;
  z-index: 1;
  border-left: 2px solid rgba(255, 255, 255, 0.24);
  padding-left: 16px;
}

.page-about .ab-cadence__head {
  margin: 0 0 4px;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-about .ab-cadence__num {
  font-family: var(--yx-mono);
  font-size: clamp(2.2rem, 6vw, 3rem);
  font-weight: 700;
  line-height: 1;
  color: var(--yx-amber);
}

.page-about .ab-cadence__unit {
  font-size: 0.94rem;
  color: rgba(255, 255, 255, 0.78);
}

.page-about .ab-cadence__desc {
  margin: 0;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.9);
}

.page-about .ab-cadence__note {
  position: relative;
  z-index: 1;
  margin: 0;
  max-width: 62ch;
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.72);
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  padding-top: 18px;
}

@media (min-width: 760px) {
  .page-about .ab-cadence {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .ab-cadence__note {
    grid-column: 1 / -1;
  }
}

/* ---------- 团队 ---------- */
.page-about .ab-team {
  display: grid;
  gap: 14px;
  margin: 0 0 22px;
}

.page-about .ab-team__card {
  padding: 22px 20px 24px;
  background: var(--ab-card);
  border-left: 3px solid var(--yx-blue);
}

.page-about .ab-team__num {
  margin: 0 0 6px;
  font-family: var(--yx-mono);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--yx-deep);
}

.page-about .ab-team__role {
  margin: 0 0 10px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--yx-orange);
}

.page-about .ab-team__text {
  margin: 0;
  font-size: 0.92rem;
  color: var(--yx-gray);
  line-height: 1.8;
}

@media (min-width: 820px) {
  .page-about .ab-team {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 资质 ---------- */
.page-about .ab-cred {
  display: grid;
  gap: 26px;
  align-items: start;
}

.page-about .ab-cred__item {
  padding: 20px 20px 22px;
  border: 1px solid var(--ab-line);
  border-left: 3px solid var(--yx-silver);
  background: rgba(255, 255, 255, 0.72);
  transition: border-color 0.24s var(--yx-ease), background 0.24s var(--yx-ease);
}

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

.page-about .ab-cred__item:hover,
.page-about .ab-cred__item:focus-within {
  border-left-color: var(--yx-orange);
  background: var(--ab-card);
}

.page-about .ab-cred__code {
  margin: 0 0 6px;
  font-family: var(--yx-mono);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  color: var(--yx-blue);
}

.page-about .ab-cred__name {
  margin: 0 0 8px;
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--yx-deep);
}

.page-about .ab-cred__text {
  margin: 0;
  font-size: 0.92rem;
  color: var(--yx-gray);
  line-height: 1.8;
}

.page-about .ab-cred__foot {
  margin-top: 18px;
  font-size: 0.9rem;
  color: var(--yx-gray);
}

.page-about .ab-cred__figure {
  margin-top: 0;
}

@media (min-width: 900px) {
  .page-about .ab-cred {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    gap: 42px;
  }
}

/* ---------- 筛选与生态 ---------- */
.page-about .yx-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.page-about .yx-filter__btn {
  padding: 8px 16px;
  border: 1px solid rgba(30, 93, 156, 0.3);
  background: transparent;
  color: var(--yx-deep);
  font-family: var(--yx-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
  transition: background 0.2s var(--yx-ease), color 0.2s var(--yx-ease), border-color 0.2s var(--yx-ease);
}

.page-about .yx-filter__btn:hover,
.page-about .yx-filter__btn:focus-visible {
  border-color: var(--yx-orange);
  color: var(--yx-orange);
}

.page-about .yx-filter__btn.is-active,
.page-about .yx-filter__btn[aria-pressed="true"] {
  background: var(--yx-deep);
  border-color: var(--yx-deep);
  color: #fff;
}

.page-about .yx-filter__count {
  margin: 0 0 16px;
  font-family: var(--yx-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--yx-gray);
}

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

.page-about .ab-eco__card {
  padding: 20px 20px 22px;
  background: var(--ab-card);
  border-top: 2px solid var(--yx-silver);
  transition: border-color 0.24s var(--yx-ease), transform 0.24s var(--yx-ease);
}

.page-about .ab-eco__card:hover {
  border-top-color: var(--yx-orange);
  transform: translateY(-3px);
}

.page-about .ab-eco__tag {
  margin: 0 0 8px;
  font-family: var(--yx-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--yx-orange);
}

.page-about .ab-eco__title {
  margin: 0 0 8px;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--yx-deep);
}

.page-about .ab-eco__text {
  margin: 0;
  font-size: 0.9rem;
  color: var(--yx-gray);
  line-height: 1.8;
}

@media (min-width: 780px) {
  .page-about .ab-eco {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-about .ab-eco {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 荣誉 ---------- */
.page-about .ab-honor {
  margin-top: 26px;
  display: grid;
  gap: 1px;
  background: var(--ab-line);
  border: 1px solid var(--ab-line);
}

.page-about .ab-honor__item {
  background: var(--yx-mist);
  padding: 20px 18px;
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-about .ab-honor__num {
  margin: 0;
  font-family: var(--yx-mono);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--yx-blue);
  flex: 0 0 auto;
}

.page-about .ab-honor__label {
  margin: 0;
  font-size: 0.9rem;
  color: var(--yx-gray);
  line-height: 1.75;
}

@media (min-width: 720px) {
  .page-about .ab-honor {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 江西 ---------- */
.page-about .ab-jiangxi {
  position: relative;
  padding: clamp(26px, 4vw, 42px);
  display: grid;
  gap: 26px;
  background: linear-gradient(150deg, var(--yx-mid) 0%, var(--yx-deep) 100%);
  color: #fff;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
  overflow: hidden;
}

.page-about .ab-jiangxi::before {
  content: "";
  position: absolute;
  inset: auto -8% -40% auto;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle at 40% 40%, rgba(74, 143, 212, 0.42), transparent 68%);
  pointer-events: none;
}

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

.page-about .ab-jiangxi__text {
  margin: 0 0 20px;
  max-width: 62ch;
  font-size: 0.95rem;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.86);
}

.page-about .ab-jiangxi__cities {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-jiangxi__cities li {
  padding: 5px 12px;
  border: 1px solid rgba(215, 227, 239, 0.34);
  font-family: var(--yx-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--yx-silver);
}

.page-about .ab-jiangxi__stat {
  position: relative;
  z-index: 1;
  align-self: end;
  border-left: 2px solid var(--yx-orange);
  padding-left: 16px;
}

.page-about .ab-jiangxi__num {
  display: block;
  font-family: var(--yx-mono);
  font-size: clamp(2.6rem, 8vw, 3.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--yx-amber);
}

.page-about .ab-jiangxi__unit {
  display: block;
  margin-top: 8px;
  font-size: 0.86rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.76);
}

@media (min-width: 860px) {
  .page-about .ab-jiangxi {
    grid-template-columns: minmax(0, 1fr) 200px;
    align-items: end;
  }
}

/* ---------- 收束 ---------- */
.page-about .ab-cta {
  border-top: 1px solid var(--ab-line);
}

.page-about .ab-cta__row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0 16px;
}

.page-about .ab-cta__note {
  margin: 0;
  font-size: 0.88rem;
  color: var(--yx-gray);
}

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 480px) {
  .page-about .ab-side__list {
    grid-template-columns: minmax(0, 1fr);
  }
  .page-about .ab-stats__num {
    font-size: 1.6rem;
  }
  .page-about .ab-team__num {
    font-size: 1.9rem;
  }
}
<<<END>>>