.page-about {
  overflow-x: clip;
  background: var(--frost);
  color: var(--ink);
}

.page-about .about-crumb-wrap {
  padding-top: clamp(14px, 2.6vw, 24px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(30px, 5vw, 56px) 0 clamp(38px, 6vw, 68px);
  border-bottom: var(--line);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 12px;
  background-image: repeating-linear-gradient(
    90deg,
    var(--pale-blue) 0 1px,
    transparent 1px 14px
  );
  opacity: 0.85;
}

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

.page-about .about-hero-lead h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.95rem, 6.2vw, 3.7rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--night-blue);
  max-width: 16em;
}

.page-about .about-lead {
  margin: 20px 0 0;
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink);
  max-width: 36em;
}

.page-about .about-lead-sub {
  margin: 12px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ice-blue);
  max-width: 36em;
}

.page-about .about-hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 26px;
  margin-top: 24px;
}

.page-about .about-textlink {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-blue);
  text-decoration: none;
  border-bottom: 2px solid var(--signal);
  padding-bottom: 2px;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-about .about-textlink:hover,
.page-about .about-textlink:focus-visible {
  color: var(--signal);
  border-color: var(--ink-blue);
}

.page-about .about-textlink:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--pale-blue);
  border: var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-stat {
  margin: 0;
  padding: 15px 16px;
  background: var(--frost);
}

.page-about .about-stat dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ice-blue);
  margin-bottom: 6px;
}

.page-about .about-stat dd {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 5px;
}

.page-about .about-stat-num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(1.4rem, 4vw, 1.9rem);
  letter-spacing: 0.01em;
  color: var(--ink-blue);
}

.page-about .about-stat-unit {
  font-size: 13px;
  color: var(--ice-blue);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-chapter {
  padding: clamp(44px, 7vw, 92px) 0;
  border-top: var(--line);
}

.page-about .about-chapter--last {
  border-bottom: var(--line);
}

.page-about .about-grid {
  display: grid;
  gap: clamp(26px, 4vw, 54px);
}

.page-about .about-main {
  position: relative;
  isolation: isolate;
  min-width: 0;
}

.page-about .about-h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.45rem, 4vw, 2.15rem);
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--night-blue);
}

.page-about .about-p {
  margin: 0 0 1.1em;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--ink);
  max-width: 34em;
}

.page-about .about-aside {
  min-width: 0;
}

.page-about .about-aside .aside-note {
  margin: 0 0 18px;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: clamp(20px, 2.8vw, 30px);
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--ink-blue), var(--pale-blue));
}

.page-about .about-timeline::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: -16px;
  right: -16px;
  top: 4px;
  bottom: 4px;
  transform: skewY(-1.5deg);
  border-radius: var(--radius-lg);
  background: linear-gradient(165deg, rgba(201, 216, 226, 0.55), rgba(201, 216, 226, 0));
  pointer-events: none;
}

.page-about .about-tl-item {
  position: relative;
  padding-left: 30px;
}

.page-about .about-tl-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 2px solid var(--ink-blue);
  background: var(--frost);
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-about .about-tl-item:last-child::before {
  background: var(--signal);
  border-color: var(--signal);
}

.page-about .about-tl-item:hover::before,
.page-about .about-tl-item:focus-within::before {
  transform: scale(1.4);
  border-color: var(--signal);
}

.page-about .about-tl-phase {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--signal);
}

.page-about .about-tl-title {
  margin: 6px 0 0;
  font-size: 17.5px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--night-blue);
}

.page-about .about-tl-text {
  margin: 6px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink);
  max-width: 32em;
}

.page-about .about-figure-tall {
  aspect-ratio: 10 / 13;
}

.page-about .about-figure-wide {
  aspect-ratio: 14 / 9;
}

.page-about .about-figure-banner {
  aspect-ratio: 12 / 7;
}

.page-about .figure {
  margin: 0 0 18px;
}

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

.page-about .figure-caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ice-blue);
}

/* ---------- 使用场景 ---------- */
.page-about .about-audience {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.page-about .about-audience-item {
  padding: 12px 0 12px 18px;
  border-left: 2px solid var(--pale-blue);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-about .about-audience-item:hover {
  border-color: var(--signal);
  transform: translateX(3px);
}

.page-about .about-audience-label {
  margin: 0;
  font-weight: 700;
  font-size: 16px;
  color: var(--ink-blue);
}

.page-about .about-audience-text {
  margin: 6px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink);
  max-width: 32em;
}

/* ---------- 三审流程 ---------- */
.page-about .about-steps {
  display: grid;
  gap: 0;
  margin-top: 22px;
}

.page-about .about-step {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 12px;
  padding: 16px 0;
  border-top: 1px solid var(--pale-blue);
}

.page-about .about-step:last-child {
  border-bottom: 1px solid var(--pale-blue);
}

.page-about .about-step-num {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--signal);
  padding-top: 3px;
}

.page-about .about-step-title {
  margin: 0;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--night-blue);
}

.page-about .about-step-text {
  margin: 6px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink);
  max-width: 32em;
}

.page-about .about-callout {
  margin-top: 24px;
}

/* ---------- 团队卡片 ---------- */
.page-about .about-team {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 85%;
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding: 4px 4px 18px;
  margin-top: 24px;
}

.page-about .about-team-card {
  scroll-snap-align: start;
  min-height: 240px;
  padding: 22px 20px;
  background: var(--frost);
  border: var(--line);
  border-radius: var(--radius);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-about .about-team-card:hover {
  transform: translateY(-2px);
  border-color: var(--ink-blue);
  box-shadow: var(--shadow);
}

.page-about .about-team-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ice-blue);
}

.page-about .about-team-num span {
  font-size: clamp(1.7rem, 5vw, 2.1rem);
  font-weight: 600;
  color: var(--signal);
  margin-right: 2px;
}

.page-about .about-team-name {
  margin: 8px 0 12px;
  font-size: 17px;
  font-weight: 700;
  color: var(--night-blue);
}

.page-about .about-team-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .about-team-list li {
  position: relative;
  padding-left: 14px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.page-about .about-team-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 1px;
  background: var(--pale-blue);
}

/* ---------- 协作伙伴 ---------- */
.page-about .about-partners {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

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

.page-about .about-partner-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .about-partner-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 14px 0;
  border-top: 1px solid var(--pale-blue);
}

.page-about .about-partner-item:last-child {
  border-bottom: 1px solid var(--pale-blue);
}

.page-about .about-partner-num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(1.35rem, 4vw, 1.7rem);
  color: var(--ink-blue);
  letter-spacing: 0.01em;
}

.page-about .about-partner-label {
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink);
}

.page-about .about-partners-tail {
  margin-top: 22px;
}

/* ---------- 年度报告 ---------- */
.page-about .about-report-media {
  margin: 24px 0 0;
}

.page-about .about-report {
  margin-top: 24px;
  padding: clamp(18px, 3vw, 28px) clamp(18px, 3.4vw, 32px);
  background: var(--cream);
  border: var(--line);
  border-radius: var(--radius);
}

.page-about .about-report details {
  border-top: 1px solid rgba(11, 60, 93, 0.16);
  padding: 12px 0;
}

.page-about .about-report details:first-child {
  border-top: 0;
}

.page-about .about-report summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 44px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  color: var(--night-blue);
}

.page-about .about-report summary::-webkit-details-marker {
  display: none;
}

.page-about .about-report summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--signal);
}

.page-about .about-report details[open] summary::after {
  content: "−";
}

.page-about .about-report summary:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.page-about .about-report details p {
  margin: 10px 0 4px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
  max-width: 34em;
}

/* ---------- 版本路线 ---------- */
.page-about .about-roadmap {
  margin-top: 22px;
  display: grid;
  gap: 0;
}

.page-about .about-road-item {
  position: relative;
  padding: 16px 0 18px 22px;
  border-left: 2px solid var(--pale-blue);
}

.page-about .about-road-item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 24px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ink-blue);
}

.page-about .about-road-item:first-child::before {
  background: var(--signal);
}

.page-about .about-road-title {
  margin: 0;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--night-blue);
}

.page-about .about-road-text {
  margin: 6px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink);
  max-width: 32em;
}

/* ---------- 收尾行动区 ---------- */
.page-about .about-cta {
  margin: clamp(40px, 6vw, 72px) 0 clamp(44px, 7vw, 84px);
  padding: clamp(26px, 4.6vw, 52px);
  display: grid;
  gap: 24px;
  background: var(--night-blue);
  color: var(--frost);
  border-radius: var(--radius-lg);
}

.page-about .about-cta-eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--signal-soft);
}

.page-about .about-cta-text {
  margin: 10px 0 0;
  font-size: clamp(1.15rem, 3.4vw, 1.6rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--frost);
  max-width: 22em;
}

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

.page-about .about-cta-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 22px;
  border: 1px solid rgba(247, 249, 251, 0.45);
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  color: var(--frost);
  text-decoration: none;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.page-about .about-cta-link:hover,
.page-about .about-cta-link:focus-visible {
  background: rgba(247, 249, 251, 0.12);
  border-color: var(--signal-soft);
  color: #fff;
}

.page-about .about-cta-link:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .about-team {
    grid-auto-flow: row;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    overflow-x: visible;
    padding: 4px 0 0;
  }
}

@media (min-width: 900px) {
  .page-about .about-partners {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: start;
  }

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

@media (min-width: 980px) {
  .page-about .about-hero-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    align-items: end;
  }

  .page-about .about-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-about .about-aside {
    padding-top: 42px;
  }
}
<<<END>>>