.page-about {
  --about-card-pad: 20px 18px;
  display: block;
  background: var(--ink-950);
  color: var(--paper-100);
  overflow-x: clip;
}

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

.page-about .media-frame img {
  width: 100%;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.04);
}

.page-about .about-crumb {
  padding-top: 16px;
  padding-bottom: 2px;
}

.page-about .about-crumb .breadcrumb {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  padding: 22px 0 46px;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -12%;
  right: -16%;
  z-index: -1;
  width: 78%;
  height: 128%;
  background:
    linear-gradient(152deg, rgba(56, 232, 208, 0.14), rgba(198, 255, 61, 0.06) 52%, transparent 80%);
  clip-path: polygon(20% 0, 100% 0, 100% 100%, 0 84%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--lime-400), rgba(198, 255, 61, 0) 62%);
  opacity: 0.55;
}

.page-about .about-hero-grid {
  display: grid;
  gap: 26px;
}

.page-about h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(32px, 8.4vw, 62px);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--paper-100);
  text-wrap: balance;
}

.page-about .about-lede {
  margin: 18px 0 0;
  max-width: 36em;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  color: rgba(234, 244, 238, 0.8);
}

.page-about .about-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  font-size: 12.5px;
}

.page-about .about-hero-meta li {
  padding: 5px 10px;
  border: 1px solid var(--moss-800);
  border-radius: 999px;
  background: rgba(22, 48, 42, 0.55);
  color: rgba(234, 244, 238, 0.8);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-about .about-hero-figure {
  margin: 0;
}

.page-about .about-hero-figure .media-frame {
  box-shadow: var(--shadow-hard);
}

.page-about .media-caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: rgba(234, 244, 238, 0.55);
}

/* ---------- 通用区块 ---------- */
.page-about .about-section {
  position: relative;
  padding: 42px 0;
}

.page-about .about-section--alt {
  background: linear-gradient(180deg, var(--ink-900), var(--ink-950));
  border-top: 2px solid var(--moss-800);
  border-bottom: 2px solid var(--moss-800);
}

.page-about .about-h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 5.2vw, 40px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--paper-100);
  text-wrap: balance;
}

.page-about .about-intro {
  margin: 14px 0 0;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(234, 244, 238, 0.74);
}

.page-about .about-intro a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 使命三卡 ---------- */
.page-about .about-pillars {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.page-about .about-pillar {
  padding: var(--about-card-pad);
  background: var(--ink-900);
  border-color: var(--moss-800);
}

.page-about .about-pillar h3 {
  margin: 8px 0 0;
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper-100);
}

.page-about .about-pillar p {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(234, 244, 238, 0.72);
}

.page-about .about-pillar .coord {
  margin: 0;
}

/* ---------- 时间线 ---------- */
.page-about .about-track {
  margin: 26px 0 0;
  padding: 0 0 0 22px;
  list-style: none;
  border-left: 2px solid var(--moss-800);
}

.page-about .track-item {
  position: relative;
  padding-bottom: 26px;
}

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

.page-about .track-item::before {
  content: "";
  position: absolute;
  top: 7px;
  left: -29px;
  width: 10px;
  height: 10px;
  background: var(--ink-900);
  border: 2px solid var(--lime-400);
  transform: rotate(45deg);
}

.page-about .track-year {
  display: block;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--lime-400);
}

.page-about .track-title {
  margin: 6px 0 0;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--paper-100);
}

.page-about .track-desc {
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(234, 244, 238, 0.7);
}

/* ---------- 团队 ---------- */
.page-about .about-team-grid {
  display: grid;
  gap: 26px;
}

.page-about .about-roles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 24px;
}

.page-about .about-role {
  padding: 14px 12px;
  border: 2px solid var(--moss-800);
  border-radius: var(--radius);
  background: rgba(22, 48, 42, 0.42);
}

.page-about .role-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan-400);
}

.page-about .role-label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: rgba(234, 244, 238, 0.7);
}

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

/* ---------- 流程 ---------- */
.page-about .about-flow {
  display: grid;
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .flow-step {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  padding: 16px;
  border: 2px solid var(--moss-800);
  border-radius: var(--radius);
  background: var(--ink-900);
  box-shadow: var(--shadow-hard);
}

.page-about .flow-num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange-500);
}

.page-about .flow-step h3 {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--paper-100);
}

.page-about .flow-step p {
  margin: 7px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(234, 244, 238, 0.72);
}

.page-about .flow-step a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 合作生态 ---------- */
.page-about .eco-list {
  display: grid;
  gap: 16px;
  margin-top: 26px;
}

.page-about .eco-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 4px 12px;
}

.page-about .eco-name {
  font-size: 14.5px;
  color: rgba(234, 244, 238, 0.82);
}

.page-about .eco-num {
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  color: var(--cyan-400);
}

.page-about .eco-bar {
  margin-top: 7px;
  height: 8px;
  border: 1px solid var(--moss-800);
  border-radius: 999px;
  background: rgba(234, 244, 238, 0.07);
  overflow: hidden;
}

.page-about .eco-fill {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--lime-400), var(--cyan-400));
}

.page-about .eco-fill--a { width: 100%; }
.page-about .eco-fill--b { width: 67%; }
.page-about .eco-fill--c { width: 30%; }
.page-about .eco-fill--d { width: 10%; }

.page-about .about-honors {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}

.page-about .honor {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 0;
  padding: 12px 14px;
  border-left: 3px solid var(--violet-400);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(154, 123, 255, 0.09);
  font-size: 14px;
  line-height: 1.6;
  color: rgba(234, 244, 238, 0.82);
}

.page-about .honor b {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--violet-400);
}

/* ---------- 覆盖规模 ---------- */
.page-about .about-reach {
  display: grid;
  gap: 26px;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 24px;
}

.page-about .stat {
  padding: 16px 12px;
  border: 2px solid var(--moss-800);
  border-radius: var(--radius);
  background: var(--ink-900);
}

.page-about .stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 6vw, 32px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--lime-400);
  word-break: break-word;
}

.page-about .stat-label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.5;
  color: rgba(234, 244, 238, 0.66);
}

/* ---------- 结尾行动 ---------- */
.page-about .about-cta {
  padding: 40px 0 56px;
}

.page-about .about-cta-box {
  padding: 24px 18px;
  border: 2px solid var(--lime-400);
  border-radius: var(--radius);
  background:
    linear-gradient(142deg, rgba(198, 255, 61, 0.12), rgba(56, 232, 208, 0.07) 58%, rgba(7, 18, 15, 0) 88%);
  box-shadow: var(--shadow-hard);
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-about .about-pillars {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-roles {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .flow-step--wide {
    grid-column: 1 / -1;
  }

  .page-about .about-cta-box {
    padding: 30px 28px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 34px 0 62px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
    gap: 40px;
  }

  .page-about .about-lede {
    font-size: 17px;
  }

  .page-about .about-section {
    padding: 58px 0;
  }

  .page-about .about-pillars {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-pillar:nth-child(2) {
    margin-top: 22px;
  }

  .page-about .about-pillar:nth-child(3) {
    margin-top: 44px;
  }

  .page-about .about-pillars {
    padding-bottom: 44px;
  }

  .page-about .about-track {
    margin-top: 32px;
    padding-left: 28px;
  }

  .page-about .track-item {
    display: grid;
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 18px;
    align-items: start;
    padding-bottom: 30px;
  }

  .page-about .track-item::before {
    left: -35px;
  }

  .page-about .track-year {
    font-size: 24px;
    text-align: right;
  }

  .page-about .track-title {
    margin-top: 0;
    font-size: 17px;
  }

  .page-about .about-team-grid,
  .page-about .about-reach {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.95fr);
    align-items: start;
    gap: 44px;
  }

  .page-about .about-reach {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: center;
  }

  .page-about .eco-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 34px;
  }

  .page-about .about-honors {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .page-about .about-cta {
    padding: 56px 0 76px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-pillar,
  .page-about .flow-step,
  .page-about .stat {
    transition: none;
  }
}
<<<END>>>