.page-about {
  padding-bottom: 96px;
}

.page-about figure {
  margin: 0;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  margin: 24px 0 8px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: 16px;
}

.page-about .about-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: end;
}

.page-about .about-hero__copy .label {
  display: inline-block;
  margin-bottom: 16px;
}

.page-about .about-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(30px, 8vw, 62px);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .about-hero__lede {
  margin: 0 0 26px;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--steel);
}

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

.page-about .about-hero__aside {
  padding: 20px 22px;
  border: 1px solid var(--grid);
  border-radius: var(--r-md);
}

.page-about .about-readout {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-readout li {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  column-gap: 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--grid);
}

.page-about .about-readout li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .about-readout__num {
  font-size: 38px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--radar);
}

.page-about .about-readout__unit {
  font-size: 13px;
  color: var(--paper);
}

.page-about .about-readout__cap {
  grid-column: 1 / -1;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--steel);
}

.page-about .about-hero__media {
  margin-top: 36px;
  border-radius: var(--r-md);
}

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

/* ---------- 主体两栏 ---------- */
.page-about .about-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-top: 64px;
}

.page-about .about-nav .label {
  display: block;
  margin-bottom: 10px;
}

.page-about .about-nav ul {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-nav li {
  flex: 0 0 auto;
}

.page-about .about-nav a {
  display: block;
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid var(--grid);
  background: var(--panel);
  color: var(--steel);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-about .about-nav a:hover,
.page-about .about-nav a:focus-visible {
  color: var(--paper);
  border-color: var(--radar);
}

.page-about .about-nav a[aria-current="true"] {
  color: var(--radar);
  border-color: var(--radar);
  background: rgba(91, 240, 140, 0.08);
}

/* ---------- 区块通用 ---------- */
.page-about .about-section {
  margin-bottom: 72px;
}

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

.page-about .about-section__head {
  margin-bottom: 26px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--grid);
}

.page-about .about-section h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(23px, 5vw, 34px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-section__head p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--steel);
}

.page-about .about-section a {
  color: var(--radar);
  text-decoration: none;
  border-bottom: 1px solid rgba(91, 240, 140, 0.35);
}

.page-about .about-section a:hover {
  border-bottom-color: var(--radar);
}

/* ---------- 三种角色 ---------- */
.page-about .about-roles {
  display: grid;
}

.page-about .role-row {
  display: grid;
  gap: 8px;
  padding: 20px 0;
  border-bottom: 1px solid var(--grid);
}

.page-about .role-row__who {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .role-row__who::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 9px;
  background: var(--radar);
  transform: translateY(-2px) rotate(45deg);
}

.page-about .role-row__need {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
}

.page-about .role-row__gain {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper);
}

/* ---------- 数据雷达 ---------- */
.page-about .about-chain {
  display: block;
  width: 100%;
  height: auto;
  margin: 4px 0 26px;
}

.page-about .about-radar-copy {
  display: grid;
  gap: 0;
}

.page-about .radar-step {
  padding: 16px 0;
  border-top: 1px solid var(--grid);
  display: grid;
  gap: 6px;
}

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

.page-about .radar-step__name::after {
  content: "";
  display: block;
  width: 28px;
  height: 2px;
  margin-top: 8px;
  background: var(--radar);
}

.page-about .radar-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

.page-about .about-note {
  margin-top: 28px;
  padding: 18px 20px;
  border: 1px solid var(--grid);
  border-left: 2px solid var(--radar);
  border-radius: var(--r-md);
}

.page-about .about-note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

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

/* ---------- 案例合集三条线 ---------- */
.page-about .about-lanes {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .lane {
  position: relative;
  overflow: hidden;
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--grid);
  border-radius: var(--r-md);
}

.page-about .lane::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--radar), transparent);
}

.page-about .lane__key {
  display: block;
  margin-bottom: 12px;
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--radar);
}

.page-about .lane__name {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .lane p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
}

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

/* ---------- 团队 ---------- */
.page-about .team-list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
}

.page-about .team-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--grid);
}

.page-about .team-item__no {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--radar);
  padding-top: 3px;
}

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

.page-about .team-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

.page-about .about-team__foot {
  margin: 0 0 28px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--steel);
}

.page-about .about-team__media {
  border-radius: var(--r-md);
}

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

/* ---------- 版本时间轴 ---------- */
.page-about .about-timeline__media {
  margin-bottom: 32px;
  border-radius: var(--r-md);
}

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

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .about-node {
  position: relative;
  padding-top: 18px;
  border-top: 1px solid var(--grid);
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--radar);
  box-shadow: 0 0 0 4px rgba(91, 240, 140, 0.14);
}

.page-about .about-node .disclosure__trigger {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  text-align: left;
}

.page-about .about-node__ver {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--radar);
}

.page-about .about-node__title {
  flex: 1 1 auto;
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
  line-height: 1.4;
}

.page-about .about-node .disclosure__panel p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

/* ---------- 协作与荣誉 ---------- */
.page-about .partner-grid {
  display: grid;
  gap: 12px;
}

.page-about .partner-card {
  padding: 20px 22px;
  border: 1px solid var(--grid);
  border-radius: var(--r-md);
  background: var(--panel);
}

.page-about .partner-card .label {
  display: inline-block;
  margin-bottom: 10px;
}

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

.page-about .partner-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

.page-about .partner-card--wide {
  border-color: var(--radar-deep);
  background: linear-gradient(135deg, rgba(31, 122, 74, 0.18), var(--panel) 62%);
}

/* ---------- 覆盖数字矩阵 ---------- */
.page-about .about-stats {
  display: grid;
  gap: 12px;
  margin-bottom: 32px;
}

.page-about .about-stat {
  position: relative;
  padding: 20px;
  border: 1px solid var(--grid);
  border-radius: var(--r-md);
  background: var(--panel);
  outline: none;
  transition: border-color 200ms var(--ease), transform 200ms var(--ease);
}

.page-about .about-stat::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 0;
  width: 34px;
  height: 2px;
  background: var(--radar);
  opacity: 0.35;
  transition: opacity 200ms var(--ease), width 200ms var(--ease);
}

.page-about .about-stat:hover,
.page-about .about-stat:focus-within,
.page-about .about-stat:focus {
  border-color: var(--radar-deep);
  transform: translateY(-2px);
}

.page-about .about-stat:hover::before,
.page-about .about-stat:focus-within::before,
.page-about .about-stat:focus::before {
  opacity: 1;
  width: 58px;
}

.page-about .about-stat__num {
  display: inline-block;
  margin-right: 6px;
  font-size: 38px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .about-stat__unit {
  font-size: 13px;
  color: var(--steel);
}

.page-about .about-stat__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--steel);
  opacity: 0.72;
  transform: translateY(4px);
  transition: opacity 200ms var(--ease), transform 200ms var(--ease), color 200ms var(--ease);
}

.page-about .about-stat:hover .about-stat__note,
.page-about .about-stat:focus-within .about-stat__note,
.page-about .about-stat:focus .about-stat__note {
  opacity: 1;
  transform: translateY(0);
  color: var(--paper);
}

/* ---------- 收尾 CTA ---------- */
.page-about .about-cta {
  padding: 24px 22px;
  border: 1px solid var(--grid);
  border-radius: var(--r-md);
}

.page-about .about-cta .label {
  display: inline-block;
  margin-bottom: 12px;
}

.page-about .about-cta h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(20px, 4vw, 26px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--paper);
}

.page-about .about-cta p {
  margin: 0 0 20px;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--steel);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-about .about-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .partner-card--wide {
    grid-column: 1 / -1;
  }

  .page-about .about-hero__cta {
    gap: 14px;
  }
}

@media (min-width: 768px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 48px;
  }

  .page-about .about-hero__media {
    margin-top: 48px;
  }

  .page-about .role-row {
    grid-template-columns: 150px minmax(0, 1fr) minmax(0, 1.3fr);
    gap: 28px;
    align-items: start;
    padding: 22px 0;
  }

  .page-about .about-lanes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .about-radar-copy {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about .radar-step {
    padding: 16px 0 0;
    border-top: 1px solid var(--grid);
  }

  .page-about .about-timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px 28px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-body {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 64px;
    align-items: start;
  }

  .page-about .about-nav {
    position: sticky;
    top: 112px;
  }

  .page-about .about-nav ul {
    display: block;
    overflow: visible;
    padding: 0;
  }

  .page-about .about-nav li {
    display: block;
  }

  .page-about .about-nav a {
    padding: 8px 0 8px 14px;
    border: 0;
    border-left: 2px solid var(--grid);
    border-radius: 0;
    background: transparent;
    white-space: normal;
  }

  .page-about .about-nav a:hover,
  .page-about .about-nav a:focus-visible {
    border-left-color: var(--steel);
    background: transparent;
  }

  .page-about .about-nav a[aria-current="true"] {
    border-left-color: var(--radar);
    background: linear-gradient(90deg, rgba(91, 240, 140, 0.12), transparent 78%);
  }

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

  .page-about .about-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 28px;
  }

  .page-about .about-cta {
    padding: 32px 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-stat,
  .page-about .about-stat__note,
  .page-about .about-stat::before,
  .page-about .about-nav a {
    transition: none;
  }

  .page-about .about-stat:hover,
  .page-about .about-stat:focus-within {
    transform: none;
  }
}