.page-about {
  --about-line: rgba(201, 214, 206, 0.24);
  --about-line-dark: rgba(11, 43, 35, 0.14);
  --about-body-copy: #38423d;
  background: var(--ink-900);
  color: var(--paper);
  overflow-x: hidden;
}

/* ============ 首屏 ============ */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  padding: calc(var(--header-h) + clamp(40px, 8vw, 92px)) 0 clamp(40px, 6vw, 76px);
  background:
    radial-gradient(92% 72% at 88% -12%, rgba(201, 255, 61, 0.2), transparent 62%),
    linear-gradient(158deg, var(--ink-900) 0%, var(--ink-800) 56%, #0d3228 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, rgba(201, 255, 61, 0.05) 0 1px, transparent 1px 76px);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 82%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 82%);
}

.page-about .about-hero .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(22px, 3.6vw, 40px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--mist);
}

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

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

.page-about .about-slash {
  display: block;
  width: 52px;
  height: 11px;
  margin-bottom: 18px;
  background: var(--flare);
  transform: skewX(-30deg);
}

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

.page-about .about-hero-title {
  margin: 0 0 clamp(18px, 2.4vw, 28px);
  max-width: 15em;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(32px, 7vw, 76px);
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.page-about .about-hero-title em {
  font-style: normal;
  color: var(--lime);
  position: relative;
}

.page-about .about-hero-lead {
  margin: 0 0 clamp(26px, 4vw, 44px);
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 17.5px);
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-hero-stats {
  list-style: none;
  margin: 0 0 clamp(26px, 4vw, 46px);
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--about-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .about-hero-stats li {
  padding: 16px 18px;
  background: rgba(18, 59, 47, 0.94);
}

.page-about .about-stat-num {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 4.4vw, 40px);
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--lime);
}

.page-about .about-stat-label {
  display: block;
  margin-top: 7px;
  font-size: 12.5px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-about .about-chapters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-chapter-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px 8px 9px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-pill);
  font-size: 13.5px;
  color: var(--mist);
  text-decoration: none;
  transition: background 0.18s var(--ease-out), color 0.18s var(--ease-out), border-color 0.18s var(--ease-out);
}

.page-about .about-chapter-link:hover,
.page-about .about-chapter-link:focus-visible {
  border-color: var(--lime);
  background: var(--lime);
  color: var(--ink-900);
}

.page-about .about-chip-no {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--flare);
}

.page-about .about-chapter-link:hover .about-chip-no,
.page-about .about-chapter-link:focus-visible .about-chip-no {
  color: var(--ink-900);
}

/* ============ 色带 ============ */
.page-about .about-band {
  height: 9px;
  background: linear-gradient(90deg, var(--lime) 0 20%, var(--pitch) 20% 46%, var(--flare) 46% 54%, var(--ink-800) 54% 100%);
}

/* ============ 章节通用 ============ */
.page-about .about-chapter {
  position: relative;
  padding: clamp(46px, 8vw, 104px) 0;
}

.page-about .about-chapter--paper {
  background: var(--paper);
  color: var(--char);
}

.page-about .about-chapter--dark {
  background: linear-gradient(176deg, var(--ink-900) 0%, #0e332a 100%);
  color: var(--paper);
}

.page-about .about-chapter-head {
  position: relative;
  margin-bottom: clamp(24px, 4vw, 48px);
}

.page-about .about-chapter-index {
  display: block;
  margin-bottom: clamp(2px, 1vw, 10px);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(56px, 12vw, 140px);
  line-height: 0.82;
  letter-spacing: -0.02em;
  color: transparent;
  -webkit-text-stroke: 1.4px rgba(201, 255, 61, 0.5);
  opacity: 0.7;
}

.page-about .about-chapter--paper .about-chapter-index {
  -webkit-text-stroke: 1.4px rgba(46, 107, 79, 0.42);
  opacity: 0.85;
}

.page-about .about-chapter-head .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-about .about-chapter--paper .about-chapter-head .eyebrow {
  color: var(--pitch);
}

.page-about .about-chapter-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(23px, 3.8vw, 42px);
  line-height: 1.28;
  letter-spacing: -0.01em;
}

.page-about .about-chapter-lead {
  margin: clamp(12px, 1.8vw, 18px) 0 0;
  max-width: 58ch;
  font-size: clamp(14.5px, 1.4vw, 16.5px);
  line-height: 1.82;
  opacity: 0.84;
}

/* ============ 正文与配图 ============ */
.page-about .about-body {
  display: grid;
  gap: clamp(22px, 4vw, 46px);
}

.page-about .about-body--spaced {
  margin-top: clamp(28px, 5vw, 58px);
}

.page-about .about-body--wide-top {
  margin-top: clamp(20px, 3vw, 34px);
}

.page-about .about-text p {
  margin: 0 0 1.05em;
  font-size: clamp(14.5px, 1.3vw, 16.5px);
  line-height: 1.86;
}

.page-about .about-chapter--paper .about-text p {
  color: var(--about-body-copy);
}

.page-about .about-chapter--dark .about-text p {
  color: var(--mist);
}

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

.page-about .about-figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-800);
  border: 1px solid rgba(201, 255, 61, 0.18);
}

.page-about .about-chapter--paper .about-figure {
  border-color: rgba(11, 43, 35, 0.14);
}

.page-about .about-figure img,
.page-about .about-wide-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-figure img {
  aspect-ratio: 3 / 2;
}

.page-about .about-figure figcaption,
.page-about .about-wide-figure figcaption {
  padding: 11px 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  background: var(--ink-800);
  color: var(--mist);
}

.page-about .about-wide-figure {
  margin: 0 0 clamp(22px, 3.4vw, 36px);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-800);
}

.page-about .about-wide-figure img {
  aspect-ratio: 16 / 9;
}

/* ============ 清单小勾 ============ */
.page-about .about-ticks {
  list-style: none;
  margin: clamp(16px, 2.6vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-about .about-ticks li {
  position: relative;
  padding-left: 24px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--about-body-copy);
}

.page-about .about-ticks li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 0.5em;
  width: 9px;
  height: 9px;
  border-left: 2px solid var(--pitch);
  border-bottom: 2px solid var(--pitch);
  transform: rotate(-45deg);
}

/* ============ 三步方法 ============ */
.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(12px, 2vw, 18px);
}

.page-about .about-step {
  padding: clamp(18px, 2.8vw, 28px);
  background: var(--ink-800);
  border: 1px solid rgba(201, 255, 61, 0.16);
  border-radius: var(--radius-lg);
  transition: border-color 0.2s var(--ease-out), transform 0.2s var(--ease-out);
}

.page-about .about-step:hover {
  border-color: var(--lime);
  transform: translateY(-3px);
}

.page-about .about-step-no {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--flare);
}

.page-about .about-step h3 {
  margin: 10px 0 9px;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 18.5px;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

/* ============ 引用短句 ============ */
.page-about .about-quote {
  margin: clamp(30px, 5vw, 58px) 0 0;
  padding: clamp(20px, 3vw, 34px) clamp(20px, 3.4vw, 38px);
  border-left: 4px solid var(--lime);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  background: linear-gradient(100deg, rgba(201, 255, 61, 0.09), transparent 72%);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(17px, 2.4vw, 25px);
  line-height: 1.62;
  color: var(--lime-soft);
}

/* ============ 时间线 ============ */
.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(10px, 1.8vw, 16px);
}

.page-about .about-timeline-item {
  display: grid;
  gap: 8px;
  padding: clamp(16px, 2.4vw, 26px);
  background: #ffffff;
  border: 1px solid rgba(11, 43, 35, 0.12);
  border-radius: var(--radius-md);
  transition: transform 0.2s var(--ease-out), border-color 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
}

.page-about .about-timeline-item:hover {
  transform: translateX(4px);
  border-color: var(--lime);
  box-shadow: 0 16px 34px -24px rgba(11, 43, 35, 0.9);
}

.page-about .about-timeline-year {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 4.6vw, 44px);
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--ink-900);
  transition: color 0.2s var(--ease-out);
}

.page-about .about-timeline-item:hover .about-timeline-year {
  color: var(--flare);
}

.page-about .about-timeline-body h3 {
  margin: 0 0 8px;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 17.5px;
  line-height: 1.45;
  color: var(--char);
}

.page-about .about-timeline-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--about-body-copy);
}

.page-about .about-timeline-tag {
  display: inline-block;
  margin-top: 11px;
  padding: 4px 11px;
  border-radius: var(--radius-pill);
  background: rgba(46, 107, 79, 0.14);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--pitch);
}

/* ============ 团队 ============ */
.page-about .about-team {
  display: grid;
  gap: clamp(12px, 2vw, 18px);
}

.page-about .about-team-card {
  padding: clamp(18px, 2.6vw, 28px);
  background: var(--ink-800);
  border: 1px solid rgba(201, 255, 61, 0.14);
  border-radius: var(--radius-lg);
}

.page-about .about-team-count {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 5vw, 46px);
  line-height: 1;
  color: var(--lime);
}

.page-about .about-team-count small {
  margin-left: 5px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-about .about-team-card h3 {
  margin: 12px 0 9px;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 17px;
  color: var(--paper);
}

.page-about .about-team-card p {
  margin: 0;
  font-size: 13.8px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-flows {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
  margin-top: clamp(26px, 4vw, 44px);
}

.page-about .about-flow {
  padding-top: 16px;
  border-top: 2px solid var(--lime);
}

.page-about .about-flow h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(17px, 1.8vw, 20px);
  line-height: 1.5;
  color: var(--lime-soft);
}

.page-about .about-flow ol {
  margin: 12px 0 0;
  padding-left: 1.15em;
  display: grid;
  gap: 9px;
  font-size: 13.8px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .about-flow li::marker {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--flare);
}

/* ============ 合作数据 ============ */
.page-about .about-partner-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(10px, 1.6vw, 14px);
}

.page-about .about-partner-stats li {
  padding: 16px 18px;
  border: 1px solid rgba(11, 43, 35, 0.14);
  border-left: 3px solid var(--pitch);
  border-radius: var(--radius-sm);
  background: rgba(46, 107, 79, 0.06);
}

.page-about .about-partner-stats .about-stat-num {
  color: var(--ink-900);
}

.page-about .about-partner-stats .about-stat-label {
  color: var(--about-body-copy);
}

/* ============ 下一步 ============ */
.page-about .about-next {
  display: grid;
  gap: 1px;
  background: rgba(201, 255, 61, 0.18);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-about .about-next-card {
  padding: clamp(20px, 3vw, 30px);
  background: var(--ink-900);
}

.page-about .about-next-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 17.5px;
  color: var(--lime);
}

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

.page-about .about-links {
  display: grid;
  gap: 12px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .about-link-card {
  display: block;
  padding: 18px 20px;
  background: var(--ink-800);
  border: 1px solid rgba(201, 255, 61, 0.16);
  border-radius: var(--radius-md);
  color: var(--paper);
  text-decoration: none;
  transition: border-color 0.2s var(--ease-out), background 0.2s var(--ease-out), transform 0.2s var(--ease-out);
}

.page-about .about-link-card:hover,
.page-about .about-link-card:focus-visible {
  border-color: var(--lime);
  background: rgba(201, 255, 61, 0.1);
  transform: translateY(-2px);
}

.page-about .about-link-card span {
  display: block;
  margin-bottom: 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-about .about-link-card strong {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
}

/* ============ 响应式 ============ */
@media (min-width: 620px) {
  .page-about .about-hero-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

@media (min-width: 860px) {
  .page-about .about-body--split {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
  }

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

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

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

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

  .page-about .about-timeline-item {
    grid-template-columns: 138px minmax(0, 1fr);
    gap: clamp(16px, 3vw, 32px);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .about-links {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-chapter-title {
    max-width: 22ch;
  }
}
<<<END>>>