.page-about {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: clip;
  padding-bottom: 0;
}

.page-about .container {
  box-sizing: border-box;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding: 26px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
}

.page-about .breadcrumb__link {
  color: var(--copper-deep);
  text-decoration: none;
}

.page-about .breadcrumb__link:hover {
  text-decoration: underline;
}

/* ---------- 通用文字 ---------- */
.page-about .about-h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(25px, 4.2vw, 42px);
  line-height: 1.15;
  letter-spacing: -.02em;
  margin: 0 0 20px;
  color: var(--ink-green);
}

.page-about .about-side {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--copper-deep);
  text-transform: uppercase;
}

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

.page-about .about-intro--onDark {
  color: rgba(245, 239, 228, .74);
}

.page-about .about-link {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 169, 59, .5);
}

.page-about .about-link:hover {
  border-bottom-color: var(--amber);
}

/* ---------- 首屏 ---------- */
.about-hero {
  position: relative;
  padding: 34px 0 56px;
}

.about-hero::before {
  content: "";
  position: absolute;
  inset: -60px 0 auto 0;
  height: 78%;
  background:
    radial-gradient(120% 92% at 88% 6%, rgba(176, 114, 60, .18), transparent 64%),
    linear-gradient(180deg, rgba(16, 48, 42, .07), transparent 72%);
  pointer-events: none;
  z-index: 0;
}

.about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 34px;
  align-items: end;
}

.about-hero__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(34px, 8vw, 72px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--ink-green);
  margin: 14px 0 0;
}

.about-hero__lead {
  margin: 22px 0 0;
  max-width: 34em;
  color: var(--ink);
}

.about-hero__actions {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-soft);
  overflow: hidden;
}

.about-stats__item {
  background: var(--paper);
  padding: 16px 12px 18px;
}

.about-stats__item dt {
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
  letter-spacing: .04em;
}

.about-stats__item dd {
  margin: 10px 0 0;
  font-size: 27px;
  font-weight: 600;
  line-height: 1;
  color: var(--ink-green);
  letter-spacing: -.02em;
}

.about-stats__item dd span {
  font-size: 12px;
  font-weight: 400;
  margin-left: 3px;
  color: var(--muted);
  letter-spacing: 0;
}

/* ---------- 章节骨架 ---------- */
.about-sec {
  padding: 56px 0;
}

.about-sec--paper2 {
  background: var(--paper-2);
}

.about-sec--ink {
  background: var(--ink-green);
  color: var(--paper);
}

.about-sec--ink .about-h2 {
  color: var(--paper);
}

.about-story__grid {
  display: grid;
  gap: 16px;
  margin-bottom: 34px;
}

.about-story__body p {
  font-size: 16px;
  line-height: 1.9;
  margin: 0 0 16px;
  max-width: 36em;
}

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

/* ---------- 起这段 ---------- */
.about-story__body {
  position: relative;
}

.about-story__body::before {
  content: "";
  display: block;
  width: 42px;
  height: 3px;
  background: var(--copper);
  margin-bottom: 20px;
}

/* ---------- 时间轴 ---------- */
.about-tl {
  list-style: none;
  margin: 0 0 44px;
  padding: 0;
}

.about-tl__item {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 14px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.about-tl__item:last-child {
  border-bottom: 1px solid var(--line);
}

.about-tl__year {
  font-size: 16px;
  font-weight: 600;
  color: var(--copper-deep);
  letter-spacing: -.01em;
  padding-top: 3px;
}

.about-tl__title {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin: 0 0 8px;
  color: var(--ink-green);
}

.about-tl__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 38em;
}

/* ---------- 图片容器 ---------- */
.about-figure {
  margin: 0;
}

.about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-soft);
}

.about-figure--wide img {
  aspect-ratio: 14 / 10;
}

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

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

.about-figure__cap {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  font-family: var(--font-body);
}

.about-sec--ink .about-figure__cap {
  color: rgba(245, 239, 228, .6);
}

/* ---------- 团队 ---------- */
.about-roles-layout {
  display: grid;
  gap: 28px;
}

.about-roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(158px, 1fr));
  gap: 14px;
}

.about-roles__item {
  background: rgba(245, 239, 228, .05);
  border-left: 3px solid var(--copper);
  border-radius: 0 var(--radius-soft) var(--radius-soft) 0;
  padding: 18px 16px 20px;
}

.about-roles__num {
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--amber);
}

.about-roles__name {
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.3;
  margin: 10px 0 8px;
  color: var(--paper);
}

.about-roles__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(245, 239, 228, .7);
}

/* ---------- 城市网格 ---------- */
.about-cities {
  list-style: none;
  margin: 0 0 44px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(196px, 1fr));
  gap: 16px;
}

.about-city {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-leaf);
  padding: 20px 18px 22px;
  position: relative;
  transition: transform .24s ease, border-color .24s ease;
}

.about-city:hover {
  transform: translateY(-3px);
  border-color: var(--copper);
}

.about-city__code {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--copper-deep);
}

.about-city__name {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 800;
  line-height: 1.25;
  margin: 10px 0 6px;
  color: var(--ink-green);
  letter-spacing: -.01em;
}

.about-city__meta {
  margin: 0 0 12px;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: .06em;
}

.about-city__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 认证标签页 ---------- */
.about-tabs {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-soft);
  padding: 6px 6px 4px;
}

.page-about .about-tabs .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  border-bottom: 1px solid var(--line);
  padding: 6px 4px 0;
}

.page-about .about-tabs .tab {
  border: 0;
  background: transparent;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  color: var(--muted);
  padding: 12px 14px;
  border-radius: 10px 10px 0 0;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}

.page-about .about-tabs .tab[aria-selected="true"] {
  color: var(--ink-green);
  border-bottom-color: var(--amber);
}

.page-about .about-tabs .tab:hover {
  color: var(--ink-green);
}

.about-tabs__panel {
  padding: 22px 16px 24px;
}

.about-tabs__panel p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--ink);
  max-width: 38em;
}

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

.about-tabs__note {
  font-size: 14px !important;
  color: var(--muted) !important;
  padding-left: 14px;
  border-left: 3px solid var(--paper-2);
}

.about-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.about-checklist li {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--paper-2);
  border-radius: 10px;
  padding: 12px 14px;
}

.about-checklist .mono {
  color: var(--copper-deep);
  font-size: 12.5px;
  letter-spacing: .08em;
  margin-right: 8px;
}

/* ---------- 保养 ---------- */
.about-care__grid {
  display: grid;
  gap: 32px;
}

.about-care__main p {
  font-size: 16px;
  line-height: 1.9;
  margin: 0 0 16px;
  max-width: 36em;
}

.about-care__panel {
  background: var(--paper-2);
  border-radius: var(--radius-soft);
  padding: 24px 20px 22px;
  border-top: 3px solid var(--copper);
}

.about-care__panel-title {
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-green);
  margin: 0 0 16px;
  letter-spacing: .02em;
}

.about-care__list {
  margin: 0;
  display: grid;
  gap: 1px;
  background: rgba(16, 48, 42, .12);
  border-radius: 10px;
  overflow: hidden;
}

.about-care__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  background: var(--paper);
  padding: 13px 14px;
}

.about-care__row dt {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
}

.about-care__row dd {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-green);
  white-space: nowrap;
}

.about-care__row--warn dt {
  color: var(--terracotta);
}

.about-care__row--warn dd {
  color: var(--terracotta);
}

.about-care__foot {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 合作 ---------- */
.about-partner__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.about-partner__card {
  background: rgba(245, 239, 228, .05);
  border-radius: var(--radius-soft);
  padding: 22px 20px 24px;
  border-top: 2px solid var(--amber);
}

.about-partner__title {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  margin: 0 0 10px;
  color: var(--paper);
}

.about-partner__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245, 239, 228, .72);
}

.about-partner__foot {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(245, 239, 228, .78);
  max-width: 40em;
}

/* ---------- 下一步 ---------- */
.about-next {
  padding-bottom: 72px;
}

.about-next__panel {
  background: linear-gradient(135deg, var(--paper-2) 0%, rgba(176, 114, 60, .16) 100%);
  border-radius: var(--radius-leaf);
  padding: 32px 24px 34px;
  display: grid;
  gap: 26px;
  border: 1px solid var(--line);
}

.about-next__copy p {
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink);
  max-width: 34em;
}

.about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

/* ================= 响应式 ================= */
@media (min-width: 720px) {
  .about-sec {
    padding: 72px 0;
  }

  .about-hero {
    padding: 44px 0 72px;
  }

  .about-tl__item {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 24px;
    padding: 28px 0;
  }

  .about-tl__year {
    font-size: 22px;
  }

  .about-tl__title {
    font-size: 20px;
  }

  .about-cities {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 18px;
  }

  .about-tabs__panel {
    padding: 26px 22px 28px;
  }

  .about-next__panel {
    padding: 42px 40px 44px;
  }
}

@media (min-width: 900px) {
  .about-hero__inner {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, .72fr);
    gap: 56px;
    align-items: end;
  }

  .about-stats {
    grid-template-columns: 1fr;
  }

  .about-story__grid {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 36px;
    margin-bottom: 44px;
  }

  .about-side {
    padding-top: 8px;
  }

  .about-roles-layout {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, .45fr);
    gap: 40px;
    align-items: start;
  }

  .about-figure--side {
    position: sticky;
    top: 24px;
  }

  .about-care__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .6fr);
    gap: 48px;
    align-items: start;
  }

  .about-next__panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 40px;
  }

  .about-next__actions {
    max-width: 320px;
  }
}

@media (min-width: 1100px) {
  .about-hero::before {
    height: 88%;
  }

  .about-tl__item {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .about-city {
    transition: none;
  }

  .about-city:hover {
    transform: none;
  }
}