.page-about {
  --about-pad: clamp(26px, 5vw, 58px);
  color: var(--c-char);
  background: var(--c-paper);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: calc(var(--header-h) + 26px) 0 0;
}
.page-about .about-hero .breadcrumb {
  margin-bottom: 14px;
}
.page-about .about-hero-card {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--c-ink);
  color: var(--c-paper);
}
.page-about .about-hero-art {
  position: absolute;
  inset: 0;
  margin: 0;
  z-index: 0;
}
.page-about .about-hero-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .34;
}
.page-about .about-hero-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(155deg, rgba(11, 43, 36, .92) 0%, rgba(11, 43, 36, .74) 46%, rgba(23, 77, 62, .88) 100%);
}
.page-about .about-hero-body {
  position: relative;
  z-index: 2;
  padding: var(--about-pad);
}
.page-about .about-hero-body .eyebrow {
  color: var(--c-mint);
}
.page-about .about-hero-body h1 {
  margin: 12px 0 16px;
  max-width: 18em;
  font-family: var(--font-display);
  font-size: clamp(28px, 6vw, 56px);
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--c-paper);
}
.page-about .about-hero-body .lead {
  margin: 0;
  max-width: 44em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--c-paper-dim);
}
.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 章节公共 ---------- */
.page-about .section {
  padding: clamp(46px, 8vw, 92px) 0;
}
.page-about .section-head {
  display: grid;
  gap: 10px;
  max-width: 780px;
  margin-bottom: clamp(22px, 3.5vw, 42px);
}
.page-about .section-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-orange);
}
.page-about .section-title {
  margin: 0;
  max-width: 20em;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.4vw, 38px);
  line-height: 1.24;
  letter-spacing: -.01em;
  color: var(--c-char);
}
.page-about .about-subnote {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-gray);
}

/* ---------- 时间线 ---------- */
.page-about .tl-list {
  position: relative;
  margin: 0;
  padding: 0 0 0 34px;
  list-style: none;
  display: grid;
  gap: 30px;
}
.page-about .tl-list::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--c-orange), var(--c-cyan) 72%, rgba(46, 142, 154, 0));
}
.page-about .tl-item {
  position: relative;
}
.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -37px;
  top: 9px;
  width: 16px;
  height: 16px;
  box-sizing: border-box;
  border-radius: 50%;
  border: 3px solid var(--c-orange);
  background: var(--c-paper);
}
.page-about .tl-year {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.page-about .tl-num {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(24px, 4vw, 30px);
  line-height: 1;
  letter-spacing: .02em;
  color: var(--c-orange);
}
.page-about .tl-tag {
  font-family: var(--font-note);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-gray);
}
.page-about .tl-body {
  margin-top: 10px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-cyan);
  background: var(--c-paper);
  box-shadow: 0 10px 28px rgba(11, 43, 36, .07);
}
.page-about .tl-body h3 {
  margin: 0 0 8px;
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.45;
  color: var(--c-ink);
}
.page-about .tl-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: #3b433d;
}

/* ---------- 覆盖范围 ---------- */
.page-about .reach-panel {
  position: relative;
  overflow: hidden;
  padding: var(--about-pad);
  border-radius: var(--radius-lg);
  background: var(--c-ink);
  color: var(--c-paper);
}
.page-about .reach-panel::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -12%;
  width: min(520px, 70%);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(46, 142, 154, .42), rgba(46, 142, 154, 0) 68%);
  pointer-events: none;
}
.page-about .reach-panel > * {
  position: relative;
}
.page-about .reach-panel .section-index {
  color: var(--c-neon);
}
.page-about .reach-panel .section-title {
  color: var(--c-paper);
}
.page-about .reach-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
}
.page-about .reach-stat {
  display: grid;
  align-content: start;
  gap: 4px;
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--c-line-dark);
  background: rgba(255, 248, 237, .05);
}
.page-about .reach-num {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(28px, 4.6vw, 42px);
  line-height: 1;
  color: var(--c-neon);
}
.page-about .reach-unit {
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--c-paper-dim);
}
.page-about .reach-stat p {
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(255, 248, 237, .7);
}
.page-about .reach-note {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-paper-dim);
}

/* ---------- 数据维护 ---------- */
.page-about .flow-layout {
  display: grid;
  gap: 26px;
}
.page-about .flow-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}
.page-about .flow-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: var(--c-mist);
}
.page-about .flow-step-no {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 14px;
  line-height: 2.1;
  color: var(--c-cyan);
}
.page-about .flow-step h3 {
  margin: 0;
  font-size: 17px;
  color: var(--c-ink);
}
.page-about .flow-step p {
  grid-column: 2;
  margin: 2px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: #3b433d;
}
.page-about .flow-figure {
  margin: 0;
}
.page-about .flow-figure .img-caption,
.page-about .content-figure .img-caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-gray);
}
.page-about .flow-team {
  margin-top: 34px;
}
.page-about .flow-team h3 {
  margin: 0 0 14px;
  font-size: clamp(17px, 2.2vw, 21px);
  color: var(--c-ink);
}
.page-about .flow-quad {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.page-about .flow-cell {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: var(--c-sand);
  color: var(--c-ink);
  font-size: 14.5px;
  font-weight: 600;
}
.page-about .flow-cell::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-orange);
}
.page-about .flow-team .meta-note {
  margin: 14px 0 0;
}

/* ---------- 内容与合作 ---------- */
.page-about .about-content-layout {
  display: grid;
  gap: 28px;
}
.page-about .content-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}
.page-about .about-copy {
  margin: 0 0 26px;
  max-width: 44em;
  font-size: 15.5px;
  line-height: 1.85;
  color: #3b433d;
}
.page-about .partner-block h3 {
  margin: 0 0 8px;
  font-size: clamp(17px, 2.2vw, 21px);
  color: var(--c-ink);
}
.page-about .partner-block p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: #3b433d;
}
.page-about .partner-track {
  display: flex;
  gap: 9px;
  margin: 16px 0 24px;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}
.page-about .partner-track li {
  flex: 0 0 auto;
  padding: 9px 16px;
  border-radius: 999px;
  background: var(--c-field);
  color: var(--c-paper);
  font-size: 13.5px;
  white-space: nowrap;
}
.page-about .content-figure {
  margin: 0;
}

/* ---------- 数据反馈 ---------- */
.page-about .report-panel {
  display: grid;
  gap: 24px;
  padding: var(--about-pad);
  border-radius: var(--radius-lg);
  background: var(--c-sand);
}
.page-about .report-panel .section-index {
  color: var(--c-orange);
}
.page-about .report-panel h2 {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.26;
  letter-spacing: -.01em;
  color: var(--c-ink);
}
.page-about .report-panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: #3b433d;
}
.page-about .report-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .report-list li {
  display: grid;
  gap: 3px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: rgba(255, 248, 237, .68);
}
.page-about .report-key {
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--c-ink);
}
.page-about .report-desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--c-gray);
}

/* ---------- 在地表达 ---------- */
.page-about .roots-layout {
  display: grid;
  gap: 26px;
}
.page-about .roots-swatches {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}
.page-about .swatch {
  display: flex;
  align-items: flex-end;
  height: 118px;
  padding: 12px;
  border-radius: var(--radius-md);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .04em;
}
.page-about .swatch--orange {
  background: var(--c-orange);
  color: var(--c-paper);
}
.page-about .swatch--cyan {
  background: var(--c-cyan);
  color: var(--c-paper);
}
.page-about .swatch--ink {
  background: var(--c-ink);
  color: var(--c-neon);
}
.page-about .roots-copy p {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.9;
  color: #3b433d;
}
.page-about .roots-copy p:last-child {
  margin-bottom: 0;
}

/* ---------- 结尾 ---------- */
.page-about .about-cta-panel {
  display: grid;
  gap: 18px;
  padding: var(--about-pad);
  border-radius: var(--radius-lg);
  border: 2px solid var(--c-orange);
  background: var(--c-paper);
}
.page-about .about-cta-panel h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.8vw, 28px);
  line-height: 1.32;
  color: var(--c-ink);
}
.page-about .about-cta-panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: #3b433d;
}
.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-about .flow-quad {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .reach-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .tl-list {
    padding-left: 0;
    gap: 0;
  }
  .page-about .tl-list::before {
    left: 178px;
    top: 16px;
    bottom: 16px;
  }
  .page-about .tl-item {
    display: grid;
    grid-template-columns: 150px minmax(0, 1fr);
    column-gap: 56px;
    padding-bottom: 34px;
  }
  .page-about .tl-item:last-child {
    padding-bottom: 0;
  }
  .page-about .tl-item::before {
    left: 170px;
    top: 13px;
    width: 18px;
    height: 18px;
  }
  .page-about .tl-year {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  .page-about .tl-num {
    font-size: 34px;
  }
  .page-about .tl-body {
    margin-top: 0;
    padding: 20px 24px;
  }

  .page-about .flow-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
    gap: 44px;
  }

  .page-about .about-content-layout {
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: start;
    gap: 48px;
  }

  .page-about .report-panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, .9fr);
    align-items: center;
    gap: 46px;
  }

  .page-about .roots-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: center;
    gap: 48px;
  }

  .page-about .about-cta-panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
  }
}

@media (max-width: 479px) {
  .page-about .roots-swatches {
    grid-template-columns: 1fr;
  }
  .page-about .swatch {
    height: 74px;
  }
}
<<<END>>>