.page-about {
  background: var(--night);
  color: var(--paper);
  overflow-x: hidden;
}

.page-about [id] {
  scroll-margin-top: calc(var(--header-h) + 28px);
}

.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-about .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(174, 185, 182, 0.5);
}

.page-about .breadcrumb-list a {
  color: var(--mist);
  text-decoration: none;
}

.page-about .breadcrumb-list a:hover,
.page-about .breadcrumb-list a:focus-visible {
  color: var(--lime);
}

.page-about .breadcrumb-list [aria-current="page"] {
  color: var(--paper);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: clamp(18px, 3.5vw, 30px) 0 clamp(44px, 7vw, 84px);
  background:
    radial-gradient(95% 70% at 88% -12%, rgba(31, 107, 82, 0.62), transparent 68%),
    radial-gradient(70% 55% at -8% 108%, rgba(18, 59, 50, 0.95), transparent 62%),
    var(--night);
}

.page-about .about-hero-grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  margin-top: clamp(22px, 4vw, 46px);
}

.page-about .about-hero-copy .eyebrow {
  color: var(--lime);
}

.page-about .about-hero-copy .h-display {
  margin: 12px 0 0;
  font-size: clamp(34px, 6.4vw, 74px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  max-width: 15em;
}

.page-about .about-hero-copy .lead {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.78;
  color: rgba(244, 240, 230, 0.82);
  max-width: 34em;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

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

.page-about .about-hero-figure .media-frame {
  border-radius: var(--r-xl);
  overflow: hidden;
}

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

.page-about .about-chips {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-chips li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: rgba(6, 17, 20, 0.5);
}

.page-about .about-chip-num {
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--lime);
}

.page-about .about-chip-txt {
  font-size: 12px;
  color: rgba(244, 240, 230, 0.78);
}

/* ---------- 连画布 + 章节索引 ---------- */

.page-about .about-canvas {
  padding: clamp(36px, 6vw, 76px) 0;
  background: var(--pitch);
  border-top: 1px solid var(--line-soft);
}

.page-about .about-layout {
  display: grid;
  gap: clamp(28px, 5vw, 60px);
}

.page-about .about-index {
  display: none;
}

.page-about .about-index-title {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-about .about-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .about-index-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 12px 9px 0;
  border-bottom: 1px solid rgba(174, 185, 182, 0.14);
  color: rgba(244, 240, 230, 0.72);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.22s var(--ease), padding-left 0.22s var(--ease);
}

.page-about .about-index-list a:hover,
.page-about .about-index-list a:focus-visible {
  color: var(--lime);
  padding-left: 6px;
}

.page-about .about-index-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--lime);
}

.page-about .about-index-foot {
  margin-top: 22px;
  display: grid;
  gap: 10px;
}

.page-about .about-index-foot p {
  margin: 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-flow {
  display: grid;
  gap: clamp(40px, 7vw, 80px);
}

.page-about .about-chapter {
  padding-top: clamp(24px, 4vw, 40px);
  border-top: 1px solid var(--line-soft);
}

.page-about .about-chapter-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: clamp(16px, 2.4vw, 24px);
}

.page-about .about-chapter-num {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--lime);
  padding-top: 4px;
}

.page-about .about-chapter-head .h-section {
  margin: 0;
  font-size: clamp(24px, 4vw, 40px);
  line-height: 1.2;
}

.page-about .about-prose p {
  margin: 0 0 16px;
  font-size: clamp(16px, 1.55vw, 17px);
  line-height: 1.8;
  color: rgba(244, 240, 230, 0.84);
}

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

.page-about .about-chapter-lead {
  margin: 0 0 clamp(20px, 3vw, 30px);
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.75;
  color: rgba(244, 240, 230, 0.86);
  max-width: 34em;
}

/* ---------- 年份刻度 ---------- */

.page-about .about-years {
  list-style: none;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0 0 0 clamp(18px, 3vw, 28px);
  border-left: 1px solid var(--line);
  display: grid;
  gap: clamp(16px, 2.6vw, 24px);
}

.page-about .about-years li {
  position: relative;
}

.page-about .about-years li::before {
  content: "";
  position: absolute;
  left: calc(-1 * clamp(18px, 3vw, 28px) - 4px);
  top: 9px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(215, 255, 63, 0.12);
}

.page-about .about-year-key {
  display: inline-block;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--lime);
  margin-bottom: 4px;
}

.page-about .about-years p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 240, 230, 0.76);
  max-width: 36em;
}

/* ---------- 三个时刻 ---------- */

.page-about .about-moments {
  display: grid;
  gap: clamp(20px, 3vw, 30px);
}

.page-about .about-moment {
  padding-top: 16px;
  border-top: 2px solid var(--grass);
  transition: border-color 0.28s var(--ease);
}

.page-about .about-moment:hover {
  border-color: var(--lime);
}

.page-about .about-moment .h-card {
  margin: 0 0 10px;
  font-size: clamp(18px, 2vw, 21px);
  color: var(--paper);
}

.page-about .about-moment p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 240, 230, 0.76);
}

.page-about .about-quote {
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: clamp(18px, 3vw, 26px) clamp(18px, 3vw, 30px);
  border-left: 3px solid var(--lime);
  border-radius: 0 var(--r-lg) var(--r-lg) 0;
  background: rgba(6, 17, 20, 0.42);
  font-size: clamp(16px, 1.7vw, 18px);
  line-height: 1.78;
  color: rgba(244, 240, 230, 0.92);
  max-width: 42em;
}

/* ---------- 内容体系（米白） ---------- */

.page-about .about-system {
  padding: clamp(44px, 7vw, 92px) 0;
  background: var(--paper);
  color: var(--ink);
}

.page-about .about-section-head .eyebrow {
  color: var(--grass);
}

.page-about .about-section-head .h-section {
  margin: 10px 0 0;
  font-size: clamp(26px, 4.2vw, 42px);
  line-height: 1.18;
  color: var(--ink);
}

.page-about .about-section-head .lead {
  margin: 14px 0 0;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.78;
  color: var(--rock);
  max-width: 36em;
}

.page-about .about-system-grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  margin-top: clamp(28px, 4vw, 48px);
}

.page-about .about-system-blocks {
  display: grid;
  gap: 22px;
  align-content: start;
}

.page-about .about-block {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(46, 58, 61, 0.18);
}

.page-about .about-block-num {
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.9;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--pitch);
  color: var(--lime);
}

.page-about .about-block .h-card {
  margin: 0 0 8px;
  font-size: clamp(18px, 2vw, 21px);
  color: var(--ink);
}

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

.page-about .about-system-note {
  margin: 0;
  padding: 16px 18px;
  border-radius: var(--r-lg);
  background: rgba(31, 107, 82, 0.1);
  border-left: 3px solid var(--grass);
  font-size: 14px;
  line-height: 1.8;
  color: var(--pitch);
}

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

.page-about .about-system-figure .media-frame {
  border-radius: var(--r-xl);
  overflow: hidden;
}

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

.page-about .about-system-figure figcaption {
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.7;
  color: rgba(46, 58, 61, 0.7);
}

/* ---------- 团队（岩灰） ---------- */

.page-about .about-team {
  padding: clamp(44px, 7vw, 92px) 0;
  background: var(--rock);
}

.page-about .about-team-grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-about .about-team-figure {
  margin: 0;
  order: 2;
}

.page-about .about-team-figure .media-frame {
  border-radius: var(--r-xl);
  overflow: hidden;
}

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

.page-about .about-team-copy {
  order: 1;
}

.page-about .about-team-copy .eyebrow {
  color: var(--lime);
}

.page-about .about-team-copy .h-section {
  margin: 10px 0 0;
  font-size: clamp(26px, 4.2vw, 40px);
  line-height: 1.2;
}

.page-about .about-caps {
  list-style: none;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-caps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 13px 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-pill);
  background: rgba(6, 17, 20, 0.32);
  transition: border-color 0.26s var(--ease), background 0.26s var(--ease), transform 0.26s var(--ease);
}

.page-about .about-caps li:hover {
  border-color: var(--lime);
  background: rgba(18, 59, 50, 0.85);
  transform: translateX(4px);
}

.page-about .about-cap-num {
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--lime);
  min-width: 34px;
}

.page-about .about-cap-body {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 240, 230, 0.76);
}

.page-about .about-cap-body strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper);
  margin-bottom: 2px;
}

.page-about .about-steps {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: step;
}

.page-about .about-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding-top: 12px;
  border-top: 1px dashed rgba(174, 185, 182, 0.3);
}

.page-about .about-steps span {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--lime);
  white-space: nowrap;
  padding-top: 3px;
}

.page-about .about-steps p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 240, 230, 0.72);
}

/* ---------- 服务范围 ---------- */

.page-about .about-scope {
  padding: clamp(44px, 7vw, 92px) 0;
  background: linear-gradient(180deg, var(--pitch) 0%, var(--night) 100%);
}

.page-about .about-scope .about-section-head .eyebrow {
  color: var(--lime);
}

.page-about .about-scope .about-section-head .h-section {
  color: var(--paper);
}

.page-about .about-scope .about-section-head .lead {
  color: rgba(244, 240, 230, 0.82);
}

.page-about .scope-track {
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0 0 0 clamp(26px, 4vw, 42px);
  position: relative;
  display: grid;
  gap: clamp(22px, 3.4vw, 34px);
}

.page-about .scope-track::before {
  content: "";
  position: absolute;
  left: clamp(7px, 1.4vw, 12px);
  top: 10px;
  bottom: 10px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--lime) 0%, rgba(215, 255, 63, 0.5) 45%, rgba(215, 255, 63, 0.04) 100%);
}

.page-about .scope-track li {
  position: relative;
  padding-bottom: 4px;
  transition: transform 0.26s var(--ease);
}

.page-about .scope-track li::before {
  content: "";
  position: absolute;
  left: calc(-1 * clamp(26px, 4vw, 42px) + clamp(3px, 1vw, 8px));
  top: 7px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--night);
  border: 2px solid var(--lime);
  transition: transform 0.26s var(--ease), background 0.26s var(--ease);
}

.page-about .scope-track li:hover::before {
  transform: scale(1.35);
  background: var(--lime);
}

.page-about .scope-track li:hover {
  transform: translateX(4px);
}

.page-about .scope-time {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lime);
  margin-bottom: 6px;
}

.page-about .scope-track .h-card {
  margin: 0 0 8px;
  font-size: clamp(18px, 2.1vw, 22px);
  color: var(--paper);
}

.page-about .scope-track p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 240, 230, 0.76);
  max-width: 40em;
}

.page-about .about-scope-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(26px, 4vw, 40px);
  padding-left: clamp(26px, 4vw, 42px);
}

/* ---------- 合作与荣誉 ---------- */

.page-about .about-partners {
  padding: clamp(44px, 7vw, 92px) 0;
  background: var(--night);
  border-top: 1px solid var(--line-soft);
}

.page-about .about-partners .about-section-head .eyebrow {
  color: var(--clay);
}

.page-about .about-partners .about-section-head .h-section {
  color: var(--paper);
}

.page-about .about-partner-grid {
  display: grid;
  gap: 18px;
  margin-top: clamp(26px, 4vw, 42px);
}

.page-about .about-partner-card {
  padding: clamp(18px, 2.6vw, 26px);
  border-radius: var(--r-lg);
  background: rgba(18, 59, 50, 0.42);
  border: 1px solid var(--line-soft);
  transition: border-color 0.26s var(--ease), background 0.26s var(--ease);
}

.page-about .about-partner-card:hover {
  border-color: var(--lime);
  background: rgba(18, 59, 50, 0.72);
}

.page-about .about-partner-tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 10px;
  border-radius: var(--r-pill);
  background: rgba(196, 107, 74, 0.22);
  color: var(--clay);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.page-about .about-partner-card .h-card {
  margin: 0 0 10px;
  font-size: clamp(17px, 1.9vw, 20px);
  color: var(--paper);
  line-height: 1.4;
}

.page-about .about-partner-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 240, 230, 0.72);
}

.page-about .about-cta {
  display: grid;
  gap: 20px;
  margin-top: clamp(32px, 5vw, 56px);
  padding: clamp(24px, 4vw, 40px);
  border-radius: var(--r-xl);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(255, 138, 61, 0.16), transparent 62%),
    rgba(6, 17, 20, 0.68);
  border: 1px solid var(--line);
}

.page-about .about-cta .h-section {
  margin: 0;
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.22;
  color: var(--paper);
}

.page-about .about-cta p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 240, 230, 0.76);
  max-width: 30em;
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .about-moments {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-about .about-layout {
    grid-template-columns: 178px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-index {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

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

  .page-about .about-system-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
  }

  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: start;
  }

  .page-about .about-team-figure {
    order: 1;
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-about .about-team-copy {
    order: 2;
  }

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

@media (min-width: 1080px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: end;
  }

  .page-about .about-chips {
    position: absolute;
    left: -18px;
    bottom: 22px;
    margin: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 16px 20px;
    border-radius: var(--r-lg);
    background: rgba(6, 17, 20, 0.74);
    border: 1px solid var(--line);
    backdrop-filter: blur(8px);
  }

  .page-about .about-chips li {
    padding: 0;
    border: 0;
    background: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-caps li,
  .page-about .about-moment,
  .page-about .scope-track li,
  .page-about .scope-track li::before,
  .page-about .about-partner-card,
  .page-about .about-index-list a {
    transition: none;
  }
}
<<<END>>>