.page-about {
  --about-cut: 22px;
  --about-paper-line: rgba(14, 34, 36, 0.14);
  background: var(--ink-0);
  color: var(--paper);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: calc(var(--bar-h) + 28px) 0 36px;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(90deg, var(--rule-20) 0 1px, transparent 1px 84px),
    radial-gradient(120% 80% at 82% 0%, rgba(56, 242, 224, 0.14), transparent 60%),
    radial-gradient(90% 70% at 8% 100%, rgba(255, 90, 43, 0.10), transparent 62%);
  pointer-events: none;
}

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

.page-about .crumb {
  margin-bottom: 18px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-about .crumb__link {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-about .crumb__link:hover,
.page-about .crumb__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan-40);
}

.page-about .crumb__sep {
  margin: 0 8px;
  color: var(--rule);
}

.page-about .crumb__now {
  color: var(--paper);
}

.page-about .about-hero__frame {
  position: relative;
  border: 1px solid var(--rule-40);
  background: linear-gradient(155deg, rgba(18, 64, 63, 0.72), rgba(6, 26, 28, 0.35) 68%);
  padding: 26px 20px 30px;
  clip-path: polygon(0 0, calc(100% - var(--about-cut)) 0, 100% var(--about-cut), 100% 100%, var(--about-cut) 100%, 0 calc(100% - var(--about-cut)));
}

.page-about .about-hero__kicker {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--amber);
  font-family: var(--font-mono);
  text-transform: uppercase;
}

.page-about .about-hero__title {
  margin: 0 0 18px;
  font-size: clamp(34px, 8.5vw, 88px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .about-hero__lead {
  margin: 0 0 24px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--rule-20);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 14px;
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-about .about-hero__num {
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-about .about-hero__label {
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-hero__vnote {
  display: none;
  writing-mode: vertical-rl;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--muted);
}

/* ---------- 长图 ---------- */
.page-about .about-band {
  margin: 0;
  border-top: 1px solid var(--rule-20);
  border-bottom: 1px solid var(--rule-20);
  background: var(--ink-1);
  line-height: 0;
}

.page-about .about-band img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.06);
}

/* ---------- 目录 ---------- */
.page-about .about-toc {
  position: sticky;
  top: var(--bar-h);
  z-index: 6;
  background: rgba(6, 26, 28, 0.94);
  border-bottom: 1px solid var(--rule-20);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.page-about .about-toc__list {
  list-style: none;
  margin: 0;
  padding: 12px 0;
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-toc__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-toc__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-about .about-toc__n {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--amber);
}

/* ---------- 章节 ---------- */
.page-about .about-chapter {
  padding: 44px 0;
  border-bottom: 1px solid var(--rule-20);
}

.page-about .about-chapter--dark {
  background: var(--ink-1);
}

.page-about .about-chapter--last {
  border-bottom: 0;
}

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

.page-about .about-chapter__rail {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.page-about .about-chapter__num {
  font-family: var(--font-mono);
  font-size: 38px;
  line-height: 0.9;
  color: rgba(56, 242, 224, 0.16);
  -webkit-text-stroke: 1px var(--cyan-40);
  letter-spacing: 0.02em;
}

.page-about .about-chapter__vnote {
  writing-mode: vertical-rl;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--muted);
  padding-top: 2px;
}

.page-about .about-chapter__title {
  margin: 0 0 16px;
  font-size: clamp(24px, 5.4vw, 40px);
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .about-chapter__intro {
  margin: 0 0 22px;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-chapter__foot {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 纸面 ---------- */
.page-about .about-sheet {
  background: var(--paper);
  color: var(--paper-ink);
  padding: 22px 18px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
}

.page-about .about-sheet p {
  margin: 0 0 1.2em;
  font-size: 16px;
  line-height: 1.85;
}

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

.page-about .about-link {
  color: #0d5f5c;
  text-decoration: none;
  border-bottom: 1px solid rgba(13, 95, 92, 0.4);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-about .about-link:hover,
.page-about .about-link:focus-visible {
  color: var(--alarm);
  border-bottom-color: var(--alarm);
}

/* ---------- 流水线 ---------- */
.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule-20);
}

.page-about .about-step {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--rule-20);
}

.page-about .about-step__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--amber);
  padding-top: 4px;
}

.page-about .about-step__text h3 {
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 700;
  color: var(--paper);
}

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

/* ---------- 图 ---------- */
.page-about .about-figure {
  margin: 24px 0 0;
  border: 1px solid var(--rule-20);
  background: var(--ink-1);
  line-height: 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-figure figcaption {
  line-height: 1.7;
  padding: 12px 14px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
  border-top: 1px solid var(--rule-20);
}

.page-about .about-figure--side img {
  aspect-ratio: 4 / 3;
}

/* ---------- 数字 ---------- */
.page-about .about-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--rule-20);
  border: 1px solid var(--rule-20);
}

.page-about .about-stat {
  background: var(--ink-0);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 6vw, 38px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-about .about-stat__label {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 团队表 ---------- */
.page-about .about-team {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.page-about .about-team__caption {
  text-align: left;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: rgba(14, 34, 36, 0.6);
  padding-bottom: 12px;
}

.page-about .about-team th,
.page-about .about-team td {
  text-align: left;
  padding: 13px 8px;
  border-bottom: 1px solid var(--about-paper-line);
  vertical-align: top;
}

.page-about .about-team thead th {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: rgba(14, 34, 36, 0.6);
  font-weight: 500;
}

.page-about .about-team tbody th {
  font-weight: 700;
  white-space: nowrap;
}

.page-about .about-team td {
  line-height: 1.7;
}

.page-about .about-team__n {
  font-family: var(--font-mono);
  font-size: 18px;
  text-align: right;
  color: var(--alarm);
  white-space: nowrap;
}

.page-about .about-notes {
  display: grid;
  gap: 14px;
  margin-top: 20px;
}

.page-about .about-note {
  border-left: 2px solid var(--cyan-40);
  padding-left: 14px;
}

.page-about .about-note h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 合作 ---------- */
.page-about .about-partners {
  display: grid;
  gap: 14px;
}

.page-about .about-partner {
  border: 1px solid var(--rule-20);
  background: linear-gradient(150deg, rgba(18, 64, 63, 0.6), rgba(6, 26, 28, 0.9));
  padding: 18px 16px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-about .about-partner__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 24px;
  color: var(--amber);
  margin-bottom: 8px;
}

.page-about .about-partner h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-partner p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-honor {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 14px;
  padding: 14px 0;
  border-top: 1px solid var(--rule-20);
}

.page-about .about-honor p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 纠错 ---------- */
.page-about .about-fix {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-fix__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 15px 0;
  border-top: 1px solid var(--rule-20);
}

.page-about .about-fix__item:last-child {
  border-bottom: 1px solid var(--rule-20);
}

.page-about .about-fix__num {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cyan);
  padding-top: 3px;
}

.page-about .about-fix__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-mono {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--paper);
  letter-spacing: 0.01em;
  word-break: break-all;
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  padding: 46px 0 72px;
  background:
    linear-gradient(120deg, rgba(255, 90, 43, 0.10), transparent 55%),
    var(--ink-1);
}

.page-about .about-cta__box {
  border: 1px solid var(--rule-40);
  padding: 24px 18px;
  display: grid;
  gap: 20px;
  clip-path: polygon(0 0, calc(100% - var(--about-cut)) 0, 100% var(--about-cut), 100% 100%, 0 100%);
}

.page-about .about-cta__text h2 {
  margin: 0 0 10px;
  font-size: clamp(22px, 5vw, 32px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--paper);
}

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

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

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .about-hero {
    padding: calc(var(--bar-h) + 44px) 0 48px;
  }

  .page-about .about-hero__frame {
    padding: 36px 34px 40px;
  }

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

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

  .page-about .about-sheet {
    padding: 30px 30px;
  }

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

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

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

  .page-about .about-cta__box {
    padding: 34px 34px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__frame {
    padding: 48px 56px 52px 48px;
  }

  .page-about .about-hero__vnote {
    display: block;
    position: absolute;
    top: 48px;
    right: 22px;
  }

  .page-about .about-chapter__grid {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 40px;
  }

  .page-about .about-chapter__rail {
    flex-direction: column;
    gap: 18px;
    padding-top: 6px;
  }

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

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

  .page-about .about-figure--side,
  .page-about .about-figure--inline {
    max-width: 720px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .crumb__link,
  .page-about .about-toc__link,
  .page-about .about-link {
    transition: none;
  }
}
<<<END>>>