.page-about {
  --about-hair: rgba(30, 75, 122, 0.62);
  --about-glow: rgba(0, 229, 255, 0.16);
  --about-rad: 22px;
  background: var(--midnight);
  color: var(--ice);
  overflow-x: clip;
}

/* ===================== 首屏 ===================== */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(102px, 15vw, 168px) 0 clamp(40px, 7vw, 72px);
  background:
    radial-gradient(ellipse 62% 48% at 86% 6%, var(--about-glow), transparent 62%),
    radial-gradient(ellipse 52% 42% at 4% 92%, rgba(255, 107, 53, 0.1), transparent 60%),
    linear-gradient(180deg, var(--midnight) 0%, var(--abyss) 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(30, 75, 122, 0.4) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 75, 122, 0.4) 1px, transparent 1px);
  background-size: 76px 76px;
  opacity: 0.26;
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 18%, transparent 72%);
  mask-image: radial-gradient(ellipse at 50% 0%, #000 18%, transparent 72%);
  pointer-events: none;
}

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

.page-about .about-hero h1 {
  margin: 18px 0 0;
  max-width: 18ch;
  font-size: clamp(36px, 6.4vw, 74px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.01em;
}

.page-about .about-hero .lede {
  margin: 22px 0 0;
  max-width: 62ch;
  color: var(--ink-70);
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.8;
}

.page-about .about-hero__facts {
  list-style: none;
  margin: clamp(30px, 4.4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
  border-radius: 18px;
  overflow: hidden;
}

.page-about .about-hero__fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  background: rgba(18, 48, 90, 0.55);
}

.page-about .about-hero__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 34px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .about-hero__lab {
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist);
}

.page-about .about-hero__figure {
  position: relative;
  margin: clamp(34px, 5.6vw, 60px) 0 0;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--about-hair);
  border-radius: 24px;
  overflow: hidden;
  background: var(--abyss);
}

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

.page-about .about-hero__figure figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 34px 20px 16px;
  font-size: 14px;
  color: var(--ink-80);
  background: linear-gradient(180deg, transparent, rgba(6, 20, 40, 0.92));
}

/* ===================== 通用小节 ===================== */
.page-about .about-lead {
  margin: 14px 0 0;
  max-width: 66ch;
  color: var(--ink-70);
  font-size: 17px;
  line-height: 1.8;
}

.page-about .section__head h2 {
  margin-top: 12px;
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.01em;
}

/* ===================== 发展节点 ===================== */
.page-about .about-axis {
  position: relative;
  margin-top: clamp(30px, 4vw, 48px);
  display: grid;
  gap: 26px;
}

.page-about .axis-node {
  position: relative;
  padding-left: 26px;
  border-left: 1px solid rgba(0, 229, 255, 0.28);
}

.page-about .axis-node__dot {
  position: absolute;
  left: -5px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(0, 229, 255, 0.14);
}

.page-about .axis-node__year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .axis-node h3 {
  margin: 8px 0 8px;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
}

.page-about .axis-node p {
  margin: 0;
  max-width: 52ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-70);
}

/* ===================== 团队与分工 ===================== */
.page-about .about-team__grid {
  margin-top: clamp(30px, 4vw, 48px);
}

.page-about .about-team__figure {
  margin: 0;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--about-hair);
  border-radius: var(--about-rad);
  overflow: hidden;
  background: var(--abyss);
}

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

.page-about .about-team__total {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
  padding: clamp(24px, 3.2vw, 36px);
  border: 1px solid rgba(0, 229, 255, 0.3);
  border-radius: var(--about-rad);
  background: linear-gradient(160deg, var(--panel), rgba(6, 20, 40, 0.92));
}

.page-about .about-team__total::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 190px;
  height: 190px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.22), transparent 70%);
  pointer-events: none;
}

.page-about .about-team__num {
  position: relative;
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(52px, 7vw, 78px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--cyan);
}

.page-about .about-team__unit {
  position: relative;
  margin: 0;
  font-size: 16px;
  font-weight: 700;
}

.page-about .about-team__desc {
  position: relative;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-70);
}

.page-about .about-role {
  position: relative;
  padding: clamp(22px, 2.6vw, 30px);
  border: 1px solid var(--about-hair);
  border-radius: var(--about-rad);
  background: rgba(18, 48, 90, 0.44);
  transition: border-color 160ms var(--ease), transform 160ms var(--ease), background-color 160ms var(--ease);
}

.page-about .about-role:hover {
  border-color: rgba(0, 229, 255, 0.55);
  background: rgba(18, 48, 90, 0.66);
  transform: translateY(-2px);
}

.page-about .about-role__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--signal);
}

.page-about .about-role h3 {
  margin: 12px 0 8px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
}

.page-about .about-role p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-70);
}

/* ===================== 内容版图 ===================== */
.page-about .about-map__figure {
  margin: clamp(30px, 4vw, 46px) 0 clamp(24px, 3.4vw, 38px);
  padding: clamp(10px, 2.2vw, 24px);
  border: 1px solid var(--about-hair);
  border-radius: var(--about-rad);
  background:
    radial-gradient(circle at 50% 50%, rgba(0, 229, 255, 0.08), transparent 62%),
    var(--abyss);
}

.page-about .about-map__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .map-link {
  stroke: rgba(0, 229, 255, 0.35);
  stroke-width: 1.5;
  stroke-dasharray: 4 6;
}

.page-about .map-core {
  fill: #12305A;
  stroke: #00E5FF;
  stroke-width: 1.5;
}

.page-about .map-core-t {
  fill: #E8F4FF;
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 800;
}

.page-about .map-node {
  fill: rgba(18, 48, 90, 0.92);
  stroke: #1E4B7A;
  stroke-width: 1.5;
}

.page-about .map-node-t {
  fill: #8FA6C4;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
}

.page-about .about-map__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(22px, 2.6vw, 30px);
  border: 1px solid var(--about-hair);
  border-radius: var(--about-rad);
  background: rgba(18, 48, 90, 0.36);
  color: inherit;
  text-decoration: none;
  transition: border-color 160ms var(--ease), transform 160ms var(--ease), background-color 160ms var(--ease);
}

.page-about .about-map__card:hover,
.page-about .about-map__card:focus-visible {
  border-color: rgba(0, 229, 255, 0.6);
  background: rgba(18, 48, 90, 0.64);
  transform: translateY(-2px);
}

.page-about .about-map__card h3 {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.3;
}

.page-about .about-map__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-70);
}

.page-about .about-map__go {
  margin-top: auto;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-about .about-map__go::after {
  content: " →";
}

/* ===================== 读者与协作 ===================== */
.page-about .about-reach__body {
  margin-top: clamp(30px, 4vw, 48px);
}

.page-about .about-reach__text p {
  margin: 0 0 16px;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-70);
}

.page-about .about-reach__text a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-reach__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 26px 0 24px;
}

.page-about .about-reach__cell {
  padding: 16px 18px;
  border: 1px solid var(--about-hair);
  border-radius: 16px;
  background: rgba(18, 48, 90, 0.42);
}

.page-about .about-reach__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-reach__lab {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--mist);
}

.page-about .about-reach__foot {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-70);
}

.page-about .about-reach__figure {
  margin: 0 auto;
  width: 100%;
  max-width: 460px;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--about-hair);
  border-radius: var(--about-rad);
  overflow: hidden;
  background: var(--abyss);
}

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

/* ===================== 坚持的做法 ===================== */
.page-about .about-craft__list {
  list-style: none;
  margin: clamp(30px, 4vw, 48px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  border: 1px solid var(--about-hair);
  border-radius: var(--about-rad);
  background: var(--about-hair);
  overflow: hidden;
}

.page-about .craft-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
  padding: clamp(20px, 3vw, 30px);
  background: rgba(18, 48, 90, 0.38);
}

.page-about .craft-item__idx {
  margin: 0;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--signal);
}

.page-about .craft-item__body h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
}

.page-about .craft-item__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-70);
}

/* ===================== 收束 ===================== */
.page-about .about-cta {
  padding: 0 0 clamp(56px, 8vw, 96px);
}

.page-about .about-cta__inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  padding: clamp(28px, 4.6vw, 52px);
  border: 1px solid rgba(0, 229, 255, 0.28);
  border-radius: 26px;
  background:
    radial-gradient(ellipse 60% 80% at 88% 8%, rgba(0, 229, 255, 0.18), transparent 62%),
    linear-gradient(140deg, var(--panel), var(--abyss));
}

.page-about .about-cta__inner h2 {
  margin: 0;
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-about .about-cta__inner p {
  margin: 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-70);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

/* ===================== 响应式 ===================== */
@media (min-width: 700px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-axis {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
    padding-top: 0;
  }

  .page-about .about-axis::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 5px;
    height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, rgba(0, 229, 255, 0.6), rgba(30, 75, 122, 0.25));
  }

  .page-about .axis-node {
    padding-left: 0;
    padding-top: 30px;
    border-left: 0;
  }

  .page-about .axis-node__dot {
    left: 0;
    top: 1px;
  }

  .page-about .axis-node:hover .axis-node__dot {
    box-shadow: 0 0 0 6px rgba(0, 229, 255, 0.2);
  }

  .page-about .about-reach__figure {
    align-self: start;
    margin-top: 4px;
  }
}

@media (max-width: 899px) {
  .page-about .about-reach__figure {
    margin-top: 26px;
  }

  .page-about .about-team__total {
    margin-top: 16px;
  }

  .page-about .about-role {
    margin-top: 16px;
  }
}

@media (max-width: 640px) {
  .page-about .about-hero__figure {
    aspect-ratio: 4 / 3;
    border-radius: 18px;
  }

  .page-about .about-hero__figure figcaption {
    padding: 28px 16px 14px;
    font-size: 13px;
  }

  .page-about .craft-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .page-about .about-map__figure {
    padding: 8px;
  }
}

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

  .page-about .about-role:hover,
  .page-about .about-map__card:hover,
  .page-about .about-map__card:focus-visible {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>