.page-about {
  --about-pad: clamp(18px, 3vw, 34px);
  --about-radius: var(--r-lg);
  background: var(--sand);
  color: var(--charcoal);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  padding-top: var(--s1);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--moss);
}
.page-about .breadcrumbs a {
  color: var(--ink-green);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}
.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--copper);
  border-bottom-color: var(--copper);
}
.page-about .breadcrumbs__sep {
  margin: 0 8px;
  color: var(--kraft);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: var(--s1) 0 var(--s3);
}
.page-about .about-hero__grid {
  display: grid;
  gap: var(--s2);
}
.page-about .about-hero__eyebrow {
  margin: 0;
  color: var(--copper);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: condensed;
  font-size: clamp(32px, 7vw, 68px);
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--charcoal);
}
.page-about .about-hero__body {
  font-family: var(--font-body);
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.95;
  color: var(--charcoal);
  max-width: 34em;
}
.page-about .about-hero__body p {
  margin: 0 0 1.2em;
}
.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}
.page-about .about-fact {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--r-pill);
  background: var(--kraft);
  border: 1px solid var(--line-soft);
  font-size: 14px;
  color: var(--ink-green);
}
.page-about .about-fact .mono {
  font-size: 13px;
  color: var(--copper);
}

/* ---------- 章节头微调 ---------- */
.page-about .section-head--stacked {
  margin-bottom: var(--s1);
}

/* ---------- 三条做法 ---------- */
.page-about .about-creed {
  list-style: none;
  margin: var(--s2) 0 0;
  padding: 0;
  border-bottom: 1px solid var(--line);
}
.page-about .about-creed__item {
  display: grid;
  gap: 10px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}
.page-about .about-creed__no {
  font-size: 14px;
  color: var(--copper);
  letter-spacing: 0.1em;
}
.page-about .about-creed__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.35;
  color: var(--ink-green);
}
.page-about .about-creed__text {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.9;
  color: var(--charcoal);
}
.page-about .about-creed__item:hover .about-creed__title {
  color: var(--copper);
}

/* ---------- 图片 ---------- */
.page-about .media {
  border-radius: var(--about-radius);
  overflow: hidden;
  background: var(--jade);
}
.page-about .media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-about .media__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--moss);
}
.page-about .about-figure {
  margin: var(--s2) 0 0;
}

/* ---------- 时间轴深底区 ---------- */
.page-about .about-band {
  background: var(--ink-green);
  color: var(--sand);
  border-radius: var(--about-radius);
  padding: clamp(28px, 4vw, 60px) clamp(20px, 4vw, 52px);
}
.page-about .about-band__eyebrow {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--copper-light);
}
.page-about .about-band__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.15;
  color: var(--sand);
}
.page-about .about-band__note {
  margin: 12px 0 0;
  max-width: 40em;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-on-dark);
}
.page-about .about-band__figure {
  margin: var(--s2) 0 0;
}
.page-about .about-band__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--r-md);
  object-fit: cover;
}

.page-about .about-timeline {
  display: flex;
  gap: 20px;
  margin: var(--s2) 0 0;
  padding: 0 2px 18px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}
.page-about .about-timeline__item {
  position: relative;
  flex: 0 0 clamp(208px, 64vw, 268px);
  scroll-snap-align: start;
  padding: 30px 0 0;
  border-top: 1px solid var(--line-dark);
  outline: 2px solid transparent;
  outline-offset: 8px;
  transition: outline-color var(--dur) var(--ease);
}
.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--copper);
  box-shadow: 0 0 0 5px rgba(184, 134, 59, 0.18);
}
.page-about .about-timeline__item:hover::before,
.page-about .about-timeline__item:focus-within::before,
.page-about .about-timeline__item:focus::before {
  background: var(--signal);
}
.page-about .about-timeline__item:focus-visible {
  outline-color: var(--signal);
}
.page-about .about-timeline__year {
  margin: 0;
  font-size: 22px;
  letter-spacing: 0.06em;
  color: var(--copper-light);
}
.page-about .about-timeline__title {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.4;
  color: var(--sand);
}
.page-about .about-timeline__brief {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-on-dark);
}
.page-about .about-timeline__note {
  margin: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-on-dark-dim);
  transition: max-height var(--dur) var(--ease), opacity var(--dur) var(--ease), margin var(--dur) var(--ease);
}
.page-about .about-timeline__item:hover .about-timeline__note,
.page-about .about-timeline__item:focus-within .about-timeline__note,
.page-about .about-timeline__item:focus .about-timeline__note {
  max-height: 220px;
  opacity: 1;
  margin-top: 10px;
}

/* ---------- 团队卡片 ---------- */
.page-about .about-team {
  display: grid;
  gap: 18px;
  margin-top: var(--s2);
}
.page-about .about-team__card {
  padding: 26px 22px 24px;
  border-radius: var(--about-radius);
  border: 1px solid var(--line-soft);
  background: var(--paper);
  outline: 2px solid transparent;
  outline-offset: 3px;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), outline-color var(--dur) var(--ease);
}
.page-about .about-team__card--jade {
  background: var(--jade);
}
.page-about .about-team__card--kraft {
  background: var(--kraft);
}
.page-about .about-team__card:hover,
.page-about .about-team__card:focus-visible {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}
.page-about .about-team__card:focus-visible {
  outline-color: var(--signal);
}
.page-about .about-team__count {
  margin: 0;
  font-size: 40px;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--copper);
}
.page-about .about-team__name {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  color: var(--ink-green);
}
.page-about .about-team__text {
  margin: 0 0 16px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--charcoal);
}

/* ---------- 覆盖与规模 ---------- */
.page-about .about-reach {
  align-items: start;
}
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}
.page-about .about-stats__cell {
  padding: 18px 16px;
  background: var(--paper);
}
.page-about .about-stats__key {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--moss);
}
.page-about .about-stats__val {
  margin: 0;
  font-size: 30px;
  line-height: 1;
  color: var(--ink-green);
}
.page-about .about-stats__unit {
  margin-left: 4px;
  font-size: 14px;
  color: var(--moss);
}

.page-about .about-dotmap {
  position: relative;
  margin-top: 22px;
  aspect-ratio: 16 / 9;
  border-radius: var(--r-md);
  background-color: var(--jade);
  background-image: radial-gradient(rgba(108, 122, 114, 0.45) 1.4px, transparent 1.5px);
  background-size: 16px 16px;
  border: 1px solid var(--line-soft);
}
.page-about .about-dotmap__mark {
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--copper);
  box-shadow: 0 0 0 6px rgba(184, 134, 59, 0.2);
  cursor: default;
}
.page-about .about-dotmap__mark--yn {
  left: 20%;
  top: 56%;
}
.page-about .about-dotmap__mark--rest {
  left: 60%;
  top: 28%;
  background: var(--moss);
  box-shadow: 0 0 0 6px rgba(108, 122, 114, 0.18);
}
.page-about .about-dotmap__mark:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 4px;
}
.page-about .about-dotmap__tip {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 12px);
  transform: translateX(-50%);
  padding: 6px 12px;
  border-radius: var(--r-pill);
  background: var(--ink-green);
  color: var(--sand);
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur) var(--ease);
}
.page-about .about-dotmap__mark:hover .about-dotmap__tip,
.page-about .about-dotmap__mark:focus-visible .about-dotmap__tip {
  opacity: 1;
}
.page-about .about-reach__figure {
  margin: var(--s2) 0 0;
}

/* ---------- 服务标准 ---------- */
.page-about .about-standard {
  list-style: none;
  margin: var(--s2) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-about .about-standard__item {
  display: grid;
  gap: 8px;
  padding: 20px 0 20px 18px;
  border-left: 3px solid var(--copper);
  background: var(--paper);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}
.page-about .about-standard__key {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--copper);
}
.page-about .about-standard__val {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.9;
  color: var(--charcoal);
}

/* ---------- 下一步 ---------- */
.page-about .about-next__panel {
  padding: clamp(28px, 4vw, 54px) clamp(22px, 4vw, 50px);
  border-radius: var(--about-radius);
}
.page-about .about-next__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.2;
}
.page-about .about-next__text {
  margin: 0 0 24px;
  max-width: 42em;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.9;
  color: var(--text-on-dark);
}
.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .about-creed__item {
    grid-template-columns: 56px minmax(160px, 220px) minmax(0, 1fr);
    align-items: baseline;
    gap: 20px;
    padding: 32px 0;
  }
  .page-about .about-creed__no {
    padding-top: 4px;
  }
  .page-about .about-creed__title {
    margin: 0;
  }
  .page-about .about-team {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-standard__item {
    grid-template-columns: 150px minmax(0, 1fr);
    align-items: baseline;
    gap: 24px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-hero {
    padding: var(--s2) 0 var(--s4);
  }
  .page-about .about-hero__grid {
    grid-template-columns: 5fr 7fr;
    gap: clamp(32px, 5vw, 76px);
    align-items: start;
  }
  .page-about .about-team {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-items: start;
  }
  .page-about .about-team__card:nth-child(2) {
    margin-top: 30px;
  }
  .page-about .about-team__card:nth-child(3) {
    margin-top: 14px;
  }
  .page-about .about-team__card:nth-child(4) {
    margin-top: 48px;
  }
  .page-about .about-reach__figure {
    margin-top: 8px;
  }
}

@media (max-width: 719px) {
  .page-about .about-dotmap__tip {
    opacity: 1;
    bottom: auto;
    top: calc(100% + 10px);
    font-size: 11px;
  }
  .page-about .about-dotmap {
    margin-bottom: 44px;
  }
  .page-about .about-timeline__note {
    max-height: 220px;
    opacity: 1;
    margin-top: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__card,
  .page-about .about-timeline__note,
  .page-about .about-dotmap__tip {
    transition: none;
  }
}