.page-about {
  --about-line: rgba(53, 214, 255, .28);
  --about-panel: rgba(11, 24, 52, .72);
  --about-warm: rgba(255, 122, 41, .9);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(28px, 5vw, 64px) 0 clamp(36px, 5vw, 72px);
  background:
    radial-gradient(120% 80% at 92% 4%, rgba(124, 255, 61, .13) 0%, rgba(124, 255, 61, 0) 52%),
    radial-gradient(90% 70% at 2% 96%, rgba(53, 214, 255, .12) 0%, rgba(53, 214, 255, 0) 58%);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(20px, 3vw, 36px);
}

.page-about .about-hero__lead h1 {
  margin: .22em 0 0;
  font-size: clamp(36px, 6.2vw, 86px);
  line-height: 1.02;
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--ice);
}

.page-about .about-hero__lead h1 em {
  font-style: normal;
  color: var(--lime);
}

.page-about .about-hero__intro {
  margin: 20px 0 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.2vw, 18px);
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero__panel {
  position: relative;
  padding: clamp(20px, 3vw, 36px);
  background: var(--grad-stand);
  border: var(--edge) var(--tactic);
  box-shadow: var(--shadow-hard);
}

.page-about .about-hero__panel::after {
  content: "YUNBO";
  position: absolute;
  top: 14px;
  right: 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .34em;
  color: rgba(124, 255, 61, .55);
}

.page-about .about-hero__panel-label {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-about .about-facts {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
}

.page-about .about-facts li {
  border-top: 1px solid var(--about-line);
  padding-top: 12px;
}

.page-about .about-facts__num {
  display: block;
  font-family: var(--mono);
  font-size: clamp(24px, 3.2vw, 40px);
  font-weight: 700;
  line-height: 1.05;
  color: var(--ice);
}

.page-about .about-facts__txt {
  display: block;
  margin-top: 5px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

.page-about .about-index {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(28px, 4vw, 48px);
  padding-top: 22px;
  border-top: 1px solid var(--about-line);
}

.page-about .about-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid rgba(147, 164, 196, .32);
  background: rgba(5, 11, 30, .55);
  color: var(--ice);
  font-size: 14px;
  text-decoration: none;
  transition: border-color .2s ease, color .2s ease, transform .2s ease;
}

.page-about .about-index__link span {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--lime);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  border-color: var(--lime);
  color: var(--lime);
  transform: translateY(-3px);
}

/* ---------- 通用章节头 ---------- */
.page-about .about-sec-head {
  max-width: 78ch;
}

.page-about .about-h2 {
  margin: 12px 0 0;
  font-size: clamp(26px, 3.6vw, 52px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--ice);
}

.page-about .about-lead {
  margin: 16px 0 0;
  max-width: 68ch;
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 01 定位 ---------- */
.page-about .about-origin__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .about-origin__side {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: clamp(18px, 3vw, 28px);
  background: var(--about-panel);
  border: var(--edge) var(--tactic);
  box-shadow: var(--shadow-soft);
}

.page-about .about-origin__side .placard {
  display: block;
  width: 100%;
  box-sizing: border-box;
}

/* ---------- 02 时间轴 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 clamp(28px, 4vw, 46px) 30px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  width: 12px;
  height: 12px;
  background: var(--ink);
  border: 2px solid var(--lime);
  transform: rotate(45deg);
}

.page-about .about-timeline__item::after {
  content: "";
  position: absolute;
  left: 10px;
  top: 26px;
  bottom: 0;
  width: 1px;
  background: var(--about-line);
}

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

.page-about .about-timeline__item:last-child::after {
  display: none;
}

.page-about .about-timeline__year {
  display: block;
  font-family: var(--mono);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--lime);
}

.page-about .about-timeline__title {
  margin: 6px 0 0;
  font-size: clamp(18px, 1.9vw, 24px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--ice);
}

.page-about .about-timeline__text {
  margin: 10px 0 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 03 团队 ---------- */
.page-about .about-team {
  padding: var(--section-y) 0;
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .about-team__media .media-frame {
  margin: 0;
}

.page-about .about-team__roles {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .about-role {
  padding: 20px 20px 22px;
  background: rgba(5, 11, 30, .58);
  border: var(--edge) var(--tactic);
  box-shadow: var(--shadow-soft);
  transition: border-color .2s ease, transform .2s ease;
}

.page-about .about-role:hover {
  border-color: var(--lime);
  transform: translateY(-4px);
}

.page-about .about-role__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-about .about-role__name {
  font-size: 18px;
  font-weight: 800;
  color: var(--ice);
}

.page-about .about-role__num {
  font-family: var(--mono);
  font-size: clamp(22px, 2.6vw, 32px);
  font-weight: 700;
  color: var(--lime);
}

.page-about .about-role__num::after {
  content: " 人";
  font-size: 12px;
  color: var(--mist);
}

.page-about .about-role__text {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 04 能力 ---------- */
.page-about .about-cap__banner {
  margin: clamp(26px, 4vw, 44px) 0 0;
  border: var(--edge) var(--tactic);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
  background: var(--stand);
}

.page-about .about-cap__banner img {
  display: block;
  width: 100%;
  height: clamp(170px, 26vw, 320px);
  object-fit: cover;
  opacity: .88;
}

.page-about .about-cap__list {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  border-top: 1px solid var(--about-line);
}

.page-about .about-cap__item {
  display: grid;
  gap: 12px;
  padding: clamp(20px, 3vw, 30px) 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-cap__ico {
  width: 36px;
  height: 36px;
  fill: none;
  stroke: var(--lime);
  stroke-width: 1.5;
  stroke-linecap: square;
}

.page-about .about-cap__num {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--cyan);
}

.page-about .about-cap__body h3 {
  margin: 6px 0 0;
  font-size: clamp(18px, 1.9vw, 22px);
  font-weight: 800;
  color: var(--ice);
}

.page-about .about-cap__body p {
  margin: 10px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-cap__use {
  margin: 0;
  align-self: start;
  padding: 12px 14px;
  border-left: 2px solid var(--amber);
  background: rgba(255, 122, 41, .07);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ice);
}

.page-about .about-cap__use b {
  display: block;
  margin-bottom: 4px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--amber);
}

/* ---------- 05 合作 ---------- */
.page-about .about-partners {
  padding: var(--section-y) 0;
  background: var(--grad-stand);
  border-top: 1px solid var(--tactic);
  border-bottom: 1px solid var(--tactic);
}

.page-about .about-partners__stats {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  margin-top: clamp(24px, 3vw, 38px);
}

.page-about .about-stat {
  padding: 18px 20px;
  background: rgba(5, 11, 30, .62);
  border: var(--edge) var(--tactic);
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--mono);
  font-size: clamp(24px, 2.8vw, 34px);
  font-weight: 700;
  color: var(--lime);
}

.page-about .about-stat__txt {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
}

.page-about .about-tags li {
  padding: 7px 13px;
  border: 1px dashed rgba(53, 214, 255, .5);
  background: rgba(5, 11, 30, .5);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}

/* ---------- 06 江西 ---------- */
.page-about .about-jx__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-about .about-jx__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-jx__figure {
  margin: 0;
  border: var(--edge) var(--tactic);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
  background: var(--stand);
}

.page-about .about-jx__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 结尾 CTA ---------- */
.page-about .about-cta {
  padding: clamp(40px, 6vw, 84px) 0;
}

.page-about .about-cta__inner {
  display: grid;
  gap: 22px;
}

.page-about .about-cta__title {
  margin: 0;
  font-size: clamp(24px, 3.2vw, 44px);
  line-height: 1.12;
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--ice);
}

.page-about .about-cta__text {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(242, 246, 255, .82);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-team__roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-cap__item {
    grid-template-columns: 56px minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: start;
    column-gap: clamp(18px, 3vw, 40px);
    row-gap: 0;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 5fr 7fr;
    align-items: end;
  }

  .page-about .about-origin__grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-about .about-timeline__item {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    column-gap: 56px;
    padding: 0 0 clamp(34px, 4vw, 56px) 0;
  }

  .page-about .about-timeline__item::before {
    left: 202px;
    top: 14px;
    width: 14px;
    height: 14px;
  }

  .page-about .about-timeline__item::after {
    left: 208px;
    top: 0;
  }

  .page-about .about-timeline__year {
    text-align: right;
    padding-right: 4px;
  }

  .page-about .about-team__grid {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-about .about-jx__grid {
    grid-template-columns: 7fr 5fr;
    align-items: center;
  }

  .page-about .about-cta__inner {
    grid-template-columns: 1.5fr 1fr;
    align-items: center;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1200px) {
  .page-about .about-facts {
    gap: 20px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-role,
  .page-about .about-index__link {
    transition: none;
  }

  .page-about .about-role:hover,
  .page-about .about-index__link:hover {
    transform: none;
  }
}