.page-about {
  --about-pad: clamp(56px, 9vw, 112px);
  --about-hair: rgba(118, 158, 224, .16);
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-about > .breadcrumb {
  padding-top: clamp(20px, 4vw, 34px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(24px, 5vw, 46px) 0 var(--about-pad);
  isolation: isolate;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -22% -12% auto -12%;
  height: 660px;
  background:
    radial-gradient(58% 68% at 20% 28%, rgba(62, 224, 255, .16), transparent 70%),
    radial-gradient(44% 58% at 86% 6%, rgba(255, 106, 43, .14), transparent 72%);
  pointer-events: none;
  z-index: -1;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(62, 224, 255, .5), transparent);
  opacity: .6;
  pointer-events: none;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 44px);
  align-items: center;
}

.page-about .about-hero__title {
  margin: 0 0 20px;
  font-size: clamp(2.7rem, 10vw, 5.4rem);
  line-height: .96;
  letter-spacing: -.035em;
  font-weight: 800;
  color: #f2f6ff;
  text-shadow: 0 0 60px rgba(62, 224, 255, .22);
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--cyan);
}

.page-about .about-hero__lede {
  margin: 0 0 30px;
  max-width: 48ch;
  font-size: clamp(1rem, 2.4vw, 1.1rem);
  line-height: 1.9;
  color: var(--text-dim);
}

.page-about .about-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: clamp(26px, 4vw, 40px);
}

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

.page-about .about-hero__marks li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--about-hair);
}

.page-about .about-hero__mark-num {
  flex: 0 0 auto;
  min-width: 3.4em;
  font-family: var(--font-mono);
  font-size: .88rem;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-about .about-hero__mark-txt {
  font-size: .9rem;
  line-height: 1.6;
  color: var(--text-mute);
}

.page-about .about-hero__figure {
  aspect-ratio: 3 / 4;
  width: 100%;
}

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

/* ---------- 章节骨架 ---------- */
.page-about .about-section {
  position: relative;
  padding: var(--about-pad) 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-section--who {
  background: linear-gradient(180deg, rgba(13, 21, 64, .55), transparent 65%);
}

.page-about .about-section--scene {
  background:
    radial-gradient(50% 60% at 90% 15%, rgba(255, 106, 43, .10), transparent 70%),
    linear-gradient(180deg, rgba(7, 11, 33, .5), transparent 70%);
}

.page-about .about-section--reach {
  background: linear-gradient(180deg, transparent, rgba(10, 16, 48, .7));
}

.page-about .about-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px 22px;
  align-items: start;
  margin-bottom: clamp(28px, 5vw, 48px);
}

.page-about .about-head .section-num {
  font-size: clamp(1.9rem, 6vw, 3.2rem);
  line-height: .82;
  letter-spacing: -.02em;
  color: rgba(62, 224, 255, .38);
}

.page-about .about-head__body {
  max-width: 64ch;
}

.page-about .about-head h2 {
  margin: 0 0 14px;
  font-size: clamp(1.45rem, 4.2vw, 2.15rem);
  line-height: 1.24;
  letter-spacing: -.02em;
  font-weight: 700;
  color: #eef4ff;
}

.page-about .about-head p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--text-dim);
}

/* ---------- 业务事实 ---------- */
.page-about .about-facts {
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
}

.page-about .about-fact {
  padding: clamp(22px, 3.2vw, 30px);
  background: rgba(7, 11, 33, .72);
}

.page-about .about-fact__idx {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--orange-soft);
}

.page-about .about-fact__title {
  margin: 0 0 12px;
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -.01em;
  color: #f0f5ff;
}

.page-about .about-fact__text {
  margin: 0;
  font-size: .92rem;
  line-height: 1.85;
  color: var(--text-mute);
}

/* ---------- 三大板块 ---------- */
.page-about .pillar-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-about .pillar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(24px, 3.6vw, 36px);
}

.page-about .pillar__idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .2em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-about .pillar__title {
  margin: 0;
  font-size: clamp(1.1rem, 3vw, 1.32rem);
  line-height: 1.35;
  font-weight: 700;
  color: #f2f7ff;
}

.page-about .pillar__text {
  margin: 0;
  font-size: .94rem;
  line-height: 1.9;
  color: var(--text-dim);
}

.page-about .pillar__links {
  margin: auto 0 0;
  padding-top: 8px;
}

/* ---------- 使用场景 ---------- */
.page-about .about-scene {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 52px);
  align-items: start;
}

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

.page-about .about-scene__aside .section-num {
  font-size: clamp(1.9rem, 6vw, 3.2rem);
  line-height: .82;
  color: rgba(255, 106, 43, .45);
}

.page-about .about-scene__title {
  margin: 0;
  font-size: clamp(1.45rem, 4.2vw, 2.1rem);
  line-height: 1.24;
  letter-spacing: -.02em;
  font-weight: 700;
  color: #eef4ff;
}

.page-about .about-scene__lede {
  margin: 0;
  font-size: .96rem;
  line-height: 1.9;
  color: var(--text-dim);
}

.page-about .about-scene__figure {
  margin-top: 6px;
  aspect-ratio: 1 / 1;
}

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

.page-about .scene-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--about-hair);
}

.page-about .scene-item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 22px 0;
  border-bottom: 1px dashed var(--about-hair);
}

.page-about .scene-item__no {
  flex: 0 0 auto;
  padding-top: .2em;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-about .scene-item__title {
  margin: 0 0 8px;
  font-size: 1.04rem;
  font-weight: 700;
  color: #eef4ff;
}

.page-about .scene-item__text {
  margin: 0;
  font-size: .92rem;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 版本记录 ---------- */
.page-about .track-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  align-items: center;
}

.page-about .about-track__figure {
  aspect-ratio: 2 / 1;
  width: 100%;
}

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

.page-about .track-points {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .track-point {
  display: grid;
  gap: 10px;
  justify-items: start;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--about-hair);
}

.page-about .track-point:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .track-point p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 联系方式 ---------- */
.page-about .reach-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
}

.page-about .reach-list {
  margin: 0;
}

.page-about .reach-list .contact-item {
  padding: 18px 0;
  border-bottom: 1px dashed var(--about-hair);
}

.page-about .reach-list .contact-item:first-child {
  border-top: 1px solid var(--about-hair);
}

.page-about .reach-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .reach-card__stamp {
  align-self: flex-start;
  margin: 0;
  padding: 5px 12px;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .24em;
  color: #3a2a06;
  background: var(--gold);
  border-radius: var(--radius);
}

.page-about .reach-card__title {
  margin: 0;
  font-size: clamp(1.2rem, 3.4vw, 1.5rem);
  line-height: 1.3;
  letter-spacing: -.015em;
  font-weight: 700;
  color: #1b1c14;
}

.page-about .reach-card__text {
  margin: 0;
  font-size: .92rem;
  line-height: 1.85;
  color: #4a4634;
}

.page-about .reach-card__cta {
  display: grid;
  gap: 10px;
  margin-top: 4px;
}

.page-about .reach-card .contact-note {
  margin: 0;
  font-size: .8rem;
  line-height: 1.75;
  color: #6a6353;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 700px) {
  .page-about .about-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .pillar-list > .pillar:first-child {
    grid-column: 1 / -1;
  }

  .page-about .track-points {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .track-point {
    border-bottom: 0;
    border-left: 1px solid var(--about-hair);
    padding: 0 0 0 18px;
  }
}

/* ---------- 桌面端 ---------- */
@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: clamp(40px, 6vw, 72px);
  }

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

  .page-about .about-hero__marks li {
    display: grid;
    gap: 8px;
    padding: 0 18px 0 0;
    border-bottom: 0;
    border-top: 1px solid var(--about-hair);
    padding-top: 14px;
  }

  .page-about .about-hero__marks li:first-child {
    padding-left: 0;
  }

  .page-about .about-scene {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    gap: clamp(44px, 6vw, 76px);
  }

  .page-about .about-scene__aside {
    position: sticky;
    top: 108px;
  }

  .page-about .track-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
    gap: clamp(36px, 5vw, 60px);
  }

  .page-about .reach-grid {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: clamp(36px, 5vw, 64px);
  }
}

/* ---------- 大屏 ---------- */
@media (min-width: 1180px) {
  .page-about .pillar-list {
    gap: 22px;
  }
}

/* ---------- 动效收敛 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .pillar,
  .page-about .about-fact,
  .page-about .scene-item {
    transition: none;
  }
}
</
PAGE_CSS>>>