.page-about {
  --abt-gap: 20px;
  --abt-pad: 20px;
}

@media (min-width: 720px) {
  .page-about { --abt-gap: 24px; --abt-pad: 40px; }
}

@media (min-width: 1200px) {
  .page-about { --abt-pad: 80px; }
}

/* ============ HERO ============ */
.page-about .abt-hero {
  position: relative;
  padding: 8px 0 4px;
  background:
    radial-gradient(circle at 88% 8%, rgba(23, 195, 162, .10), transparent 42%),
    radial-gradient(circle at 4% 92%, rgba(242, 107, 33, .09), transparent 38%);
}

.page-about .abt-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding-top: 18px;
  padding-bottom: 52px;
}

@media (min-width: 980px) {
  .page-about .abt-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(280px, 1fr);
    gap: 64px;
    align-items: start;
    padding-top: 28px;
    padding-bottom: 76px;
  }
}

.page-about .abt-hero__lead {
  max-width: 640px;
}

.page-about .abt-hero__lead h1 {
  margin: 12px 0 0;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(32px, 5.4vw, 56px);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-about .abt-hero__lead .lede {
  margin-top: 20px;
  font-size: 17px;
  line-height: 1.82;
  color: var(--graphite);
  max-width: 56ch;
}

.page-about .abt-hero__note {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite);
  padding-left: 14px;
  border-left: 2px solid var(--gray);
}

.page-about .abt-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .abt-hero__cta .btn {
  min-height: 44px;
}

/* 首屏数字板 */
.page-about .abt-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  overflow: hidden;
}

@media (min-width: 980px) {
  .page-about .abt-stats {
    grid-template-columns: 1fr;
    align-self: start;
  }
}

.page-about .abt-stat {
  background: var(--glass);
  backdrop-filter: blur(8px);
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
  transition: background .18s ease;
}

.page-about .abt-stat::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--teal);
  opacity: 0;
  transition: opacity .18s ease;
}

.page-about .abt-stat:hover::before {
  opacity: 1;
}

.page-about .abt-stat__num {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(28px, 3.6vw, 38px);
  line-height: 1;
  color: var(--pine);
  letter-spacing: -.01em;
}

.page-about .abt-stat__num em {
  font-family: var(--font-sans);
  font-style: normal;
  font-weight: 700;
  font-size: .42em;
  margin-left: 3px;
  color: var(--pine-2);
  letter-spacing: 0;
}

.page-about .abt-stat__label {
  font-size: 13px;
  color: var(--graphite);
  line-height: 1.5;
}

/* ============ 章节通用微调 ============ */
.page-about .sec__head {
  max-width: 760px;
}

.page-about .sec__lede {
  max-width: 62ch;
}

/* ============ N01 团队 ============ */
.page-about .abt-crew__figure {
  margin: 32px 0 0;
  max-width: 760px;
}

@media (min-width: 1100px) {
  .page-about .abt-crew__figure {
    max-width: 820px;
  }
}

.page-about .abt-crew__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--abt-gap);
  margin-top: 32px;
}

@media (min-width: 720px) {
  .page-about .abt-crew__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .abt-crew-card {
  border: 1px solid var(--hair);
  border-left: 4px solid var(--pine-2);
  border-radius: var(--radius);
  background: #fff;
  padding: 22px 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color .18s ease, transform .18s ease, box-shadow .18s ease;
}

.page-about .abt-crew-card:hover {
  border-left-color: var(--orange);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -20px rgba(16, 26, 24, .5);
}

.page-about .abt-crew-card__head {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.page-about .abt-crew-card__id {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--pine-2);
  letter-spacing: .06em;
  padding: 3px 7px;
  border: 1px solid var(--hair);
  border-radius: 6px;
  background: var(--silver);
}

.page-about .abt-crew-card__title {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -.005em;
}

.page-about .abt-crew-card__head .tag {
  margin-left: auto;
}

.page-about .abt-crew-card__board {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-about .abt-crew-card__row {
  display: grid;
  gap: 3px;
  padding-top: 10px;
  border-top: 1px solid var(--hair-soft);
}

.page-about .abt-crew-card__row:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .abt-crew-card__row dt {
  font-size: 12px;
  font-weight: 700;
  color: var(--pine-2);
  letter-spacing: .02em;
}

.page-about .abt-crew-card__row dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--graphite);
}

/* ============ N02 服务区域（深色块） ============ */
.page-about .abt-region {
  background:
    radial-gradient(circle at 78% 0%, rgba(23, 195, 162, .18), transparent 46%),
    linear-gradient(158deg, var(--pine-deep) 0%, var(--pine) 58%, #174A3E 100%);
  color: #EAF3F0;
  padding: 64px 0 72px;
  margin-top: 0;
  border-top: 0;
}

@media (min-width: 900px) {
  .page-about .abt-region {
    padding: 84px 0 96px;
  }
}

.page-about .abt-region .sec__num {
  color: transparent;
  -webkit-text-stroke: 1px rgba(23, 195, 162, .7);
}

.page-about .abt-region .sec__title {
  color: #fff;
}

.page-about .abt-region .sec__lede {
  color: rgba(234, 243, 240, .78);
}

.page-about .abt-region .eyebrow {
  color: var(--teal);
}

.page-about .abt-region__figure {
  margin: 36px 0 0;
  border: 1px solid rgba(199, 210, 214, .22);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(255, 255, 255, .04);
}

.page-about .abt-region__figure .figure__cap {
  color: rgba(234, 243, 240, .68);
}

.page-about .abt-regions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: 40px;
  background: rgba(199, 210, 214, .18);
  border: 1px solid rgba(199, 210, 214, .18);
  border-radius: var(--radius);
  overflow: hidden;
}

@media (min-width: 640px) {
  .page-about .abt-regions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .page-about .abt-regions {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .abt-region-card {
  background: rgba(11, 38, 32, .55);
  padding: 24px 22px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 9px;
  min-height: 168px;
  transition: background .2s ease;
}

.page-about .abt-region-card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 3px;
  width: 0;
  background: var(--teal);
  transition: width .28s ease;
}

.page-about .abt-region-card:hover {
  background: rgba(23, 195, 162, .12);
}

.page-about .abt-region-card:hover::after {
  width: 100%;
}

.page-about .abt-region-card__dot {
  display: block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 4px rgba(23, 195, 162, .16);
}

.page-about .abt-region-card__name {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  color: #fff;
  letter-spacing: .01em;
}

.page-about .abt-region-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(234, 243, 240, .74);
}

/* ============ N03 时间线 ============ */
.page-about .abt-tl-sec__figure {
  margin: 32px 0 0;
  max-width: 780px;
}

.page-about .abt-tl-scroller {
  margin-top: 44px;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 14px;
  scrollbar-width: thin;
}

.page-about .abt-tl-scroller:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

.page-about .abt-tl {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 20px;
  min-width: max-content;
  position: relative;
}

@media (min-width: 900px) {
  .page-about .abt-tl {
    gap: 28px;
  }
}

.page-about .abt-tl::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 33px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(
    90deg,
    rgba(23, 195, 162, .85) 0%,
    rgba(23, 195, 162, .45) 34%,
    rgba(199, 210, 214, .85) 70%,
    rgba(199, 210, 214, .25) 100%
  );
  z-index: 0;
  pointer-events: none;
}

.page-about .abt-tl__item {
  flex: 0 0 268px;
  position: relative;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
}

@media (min-width: 900px) {
  .page-about .abt-tl__item {
    flex-basis: 300px;
  }
}

.page-about .abt-tl__head {
  height: 68px;
  display: flex;
  align-items: center;
  gap: 10px;
  position: relative;
  z-index: 1;
}

.page-about .abt-tl__dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 5px rgba(23, 195, 162, .16), inset 0 0 0 1px rgba(11, 38, 32, .35);
  flex: none;
  transition: box-shadow .2s ease, background .2s ease;
}

.page-about .abt-tl__item:hover .abt-tl__dot {
  background: var(--orange);
  box-shadow: 0 0 0 7px rgba(242, 107, 33, .18);
}

.page-about .abt-tl__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--pine-2);
  letter-spacing: .06em;
  background: var(--silver);
  padding: 3px 7px;
  border-radius: 6px;
  border: 1px solid var(--hair);
}

.page-about .abt-tl__era {
  font-size: 12.5px;
  color: var(--graphite);
  letter-spacing: .02em;
}

.page-about .abt-tl__card {
  background: #fff;
  border: 1px solid var(--hair);
  border-top: 3px solid var(--pine-2);
  border-radius: var(--radius);
  padding: 20px 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  min-height: 158px;
  transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}

.page-about .abt-tl__item:hover .abt-tl__card {
  border-top-color: var(--orange);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -22px rgba(16, 26, 24, .55);
}

.page-about .abt-tl__title {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -.005em;
}

.page-about .abt-tl__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--graphite);
}

/* ============ N04 节奏 ============ */
.page-about .abt-rhythm__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--abt-gap);
  margin-top: 34px;
}

@media (min-width: 820px) {
  .page-about .abt-rhythm__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .abt-rhythm__item {
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  padding: 24px 22px 26px;
  background: var(--glass);
  backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  overflow: hidden;
}

.page-about .abt-rhythm__item::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
}

.page-about .abt-rhythm__item--month::before { background: var(--pine-2); }
.page-about .abt-rhythm__item--quarter::before { background: var(--blue); }
.page-about .abt-rhythm__item--year::before { background: var(--orange); }

.page-about .abt-rhythm__tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--graphite);
}

.page-about .abt-rhythm__title {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  color: var(--ink);
}

.page-about .abt-rhythm__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--graphite);
}

.page-about .abt-rhythm__strip {
  margin-top: var(--abt-gap);
  padding: 26px 24px;
  border: 1px solid var(--hair);
  border-left: 4px solid var(--orange);
  border-radius: var(--radius);
  background: var(--orange-soft);
  display: grid;
  gap: 12px;
}

@media (min-width: 820px) {
  .page-about .abt-rhythm__strip {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 30px 32px;
  }
  .page-about .abt-rhythm__strip-title,
  .page-about .abt-rhythm__strip p {
    grid-column: 1;
  }
  .page-about .abt-rhythm__strip .btn {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: center;
  }
}

.page-about .abt-rhythm__strip-title {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
  color: var(--ink);
}

.page-about .abt-rhythm__strip p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: #5B3A26;
  max-width: 68ch;
}

/* ============ N05 协作生态 ============ */
.page-about .abt-eco__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--abt-gap);
  margin-top: 34px;
}

@media (min-width: 860px) {
  .page-about .abt-eco__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  }
}

.page-about .abt-eco__panel {
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  padding: 28px 24px 26px;
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-about .abt-eco__panel--dark {
  background: linear-gradient(160deg, var(--pine) 0%, #18473B 100%);
  border-color: transparent;
  color: #EAF3F0;
}

.page-about .abt-eco__num {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(40px, 6vw, 62px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--pine-2);
}

.page-about .abt-eco__panel--dark .abt-eco__num {
  color: var(--teal);
}

.page-about .abt-eco__title {
  margin: 0;
  font-size: 21px;
  font-weight: 800;
  color: var(--ink);
}

.page-about .abt-eco__panel--dark .abt-eco__title {
  color: #fff;
}

.page-about .abt-eco__panel p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--graphite);
}

.page-about .abt-eco__panel--dark p {
  color: rgba(234, 243, 240, .78);
}

.page-about .abt-eco__list {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .abt-eco__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite);
}

.page-about .abt-eco__panel--dark .abt-eco__list li {
  color: rgba(234, 243, 240, .78);
}

.page-about .abt-eco__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--pine-2);
}

.page-about .abt-eco__panel--dark .abt-eco__list li::before {
  background: var(--teal);
}

.page-about .abt-eco__foot {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--graphite);
  padding-left: 14px;
  border-left: 2px solid var(--gray);
  max-width: 68ch;
}

/* ============ N06 服务标准 ============ */
.page-about .abt-pledge__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: 34px;
  background: var(--hair);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  overflow: hidden;
}

@media (min-width: 780px) {
  .page-about .abt-pledge__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .abt-pledge__item {
  background: #fff;
  padding: 28px 24px 30px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  transition: background .2s ease;
}

.page-about .abt-pledge__item:hover {
  background: #F7FAFB;
}

.page-about .abt-pledge__num {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(34px, 5vw, 50px);
  line-height: 1;
  color: var(--ink);
  letter-spacing: -.02em;
}

.page-about .abt-pledge__num em {
  font-family: var(--font-sans);
  font-style: normal;
  font-weight: 700;
  font-size: .38em;
  margin-left: 3px;
  color: var(--pine-2);
  letter-spacing: 0;
}

.page-about .abt-pledge__head {
  margin: 0;
  font-size: 16px;
  font-weight: 800;
  color: var(--pine);
}

.page-about .abt-pledge__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--graphite);
}

.page-about .abt-pledge__cta {
  margin-top: 34px;
  padding: 28px 24px;
  border: 1px dashed var(--gray);
  border-radius: var(--radius);
  background: var(--silver);
  display: grid;
  gap: 16px;
}

@media (min-width: 780px) {
  .page-about .abt-pledge__cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 30px 32px;
  }
}

.page-about .abt-pledge__cta-text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink);
  max-width: 62ch;
}

.page-about .abt-pledge__cta-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .abt-pledge__cta-btns .btn {
  min-height: 42px;
}

/* ============ 图片通用 ============ */
.page-about .figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

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

/* ============ 动效收敛 ============ */
@media (prefers-reduced-motion: reduce) {
  .page-about .abt-crew-card,
  .page-about .abt-tl__card,
  .page-about .abt-tl__dot,
  .page-about .abt-region-card,
  .page-about .abt-stat::before {
    transition: none !important;
  }
  .page-about .abt-crew-card:hover,
  .page-about .abt-tl__item:hover .abt-tl__card {
    transform: none;
  }
}
</main>