.page-about {
  --about-rail: 196px;
  --about-shadow: 6px 6px 0 rgba(31, 111, 90, 0.55);
  position: relative;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 54px;
}

.page-about .about-hero__beam {
  position: absolute;
  top: -140px;
  right: -14%;
  width: 64%;
  height: 540px;
  background: linear-gradient(150deg, rgba(18, 224, 184, 0.28), rgba(74, 58, 140, 0.22) 52%, rgba(4, 20, 15, 0) 78%);
  clip-path: polygon(26% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 26px;
  font-size: 13px;
  color: #9FB8AE;
}

.page-about .about-hero .breadcrumb a {
  color: #9FB8AE;
  text-decoration: none;
}

.page-about .about-hero .breadcrumb a:hover,
.page-about .about-hero .breadcrumb a:focus-visible {
  color: #12E0B8;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

.page-about .about-hero__lead h1 {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(32px, 4.8vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: #E8F5EF;
}

.page-about .about-hero__dek {
  max-width: 640px;
  margin: 16px 0 0;
  font-size: 17px;
  line-height: 1.78;
  color: #9FB8AE;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__slab {
  position: relative;
  padding: 26px 22px 24px;
  background: #F2F7F4;
  color: #22453A;
  border: 1px solid #1F6F5A;
  box-shadow: 7px 7px 0 rgba(43, 30, 92, 0.72);
}

.page-about .about-hero__slabLabel {
  margin: 14px 0 0;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: #22453A;
  opacity: 0.72;
}

.page-about .about-hero__slabNum {
  margin: 4px 0 0;
  font-family: var(--font-num);
  font-weight: 600;
  font-size: clamp(46px, 7vw, 74px);
  line-height: 1;
  color: #0B2B20;
}

.page-about .about-hero__unit {
  margin-left: 6px;
  font-family: var(--font-body);
  font-size: 19px;
  font-weight: 600;
}

.page-about .about-hero__slabSub {
  margin: 8px 0 0;
  font-size: 14px;
  color: #22453A;
  opacity: 0.78;
}

.page-about .about-hero__slabSub .num {
  font-family: var(--font-num);
  font-weight: 600;
}

.page-about .about-hero__slabList {
  list-style: none;
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid rgba(31, 111, 90, 0.38);
}

.page-about .about-hero__slabList li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 14px;
  color: #22453A;
}

.page-about .about-hero__slabList .num {
  font-family: var(--font-num);
  font-weight: 600;
  font-size: 20px;
  color: #0B2B20;
}

/* ---------- 主体两栏 ---------- */
.page-about .about-body {
  padding: 46px 0 66px;
}

.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

.page-about .about-rail {
  display: none;
}

.page-about .about-rail__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: #9FB8AE;
  text-transform: uppercase;
}

.page-about .about-rail__list {
  list-style: none;
  position: relative;
  margin: 0;
  padding: 0;
}

.page-about .about-rail__list::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, #12E0B8, #1F6F5A 60%, rgba(31, 111, 90, 0));
}

.page-about .about-rail__link {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  padding: 10px 0 10px 16px;
  color: #9FB8AE;
  font-size: 14px;
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-about .about-rail__link::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 50%;
  width: 2px;
  height: 0;
  background: #FF8A2B;
  transform: translateY(-50%);
  transition: height var(--dur) var(--ease);
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: #E8F5EF;
}

.page-about .about-rail__link:hover::before,
.page-about .about-rail__link:focus-visible::before {
  height: 20px;
}

.page-about .about-rail__idx {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #1F6F5A;
  transition: color var(--dur) var(--ease);
}

.page-about .about-rail__link:hover .about-rail__idx,
.page-about .about-rail__link:focus-visible .about-rail__idx {
  color: #FF8A2B;
}

.page-about .about-rail__foot {
  margin: 22px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: #9FB8AE;
}

.page-about .about-rail__foot a {
  color: #12E0B8;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-flow {
  display: grid;
  gap: 56px;
  min-width: 0;
}

/* ---------- 章节通用 ---------- */
.page-about .about-sec {
  min-width: 0;
}

.page-about .about-sec__head {
  margin-bottom: 18px;
}

.page-about .about-sec h2 {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(23px, 3vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: #E8F5EF;
}

.page-about .about-sec__body p {
  max-width: 700px;
  margin: 0 0 16px;
  font-size: 17px;
  line-height: 1.78;
  color: #E8F5EF;
}

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

.page-about .about-sec__figure {
  margin: 26px 0 0;
}

.page-about .about-sec .media__img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid #1F6F5A;
}

.page-about .about-sec__figure .media__img {
  width: 100%;
  aspect-ratio: 14 / 9;
}

.page-about .media__caption {
  margin-top: 10px;
  font-size: 13px;
  color: #9FB8AE;
}

/* ---------- 团队 ---------- */
.page-about .about-sec__lede {
  max-width: 720px;
  margin: 0 0 24px;
  font-size: 17px;
  line-height: 1.78;
  color: #E8F5EF;
}

.page-about .about-dots {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 9px;
  max-width: 420px;
  margin: 0 0 26px;
}

.page-about .about-dot {
  display: block;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
}

.page-about .about-dot--edit {
  background: #12E0B8;
}

.page-about .about-dot--record {
  background: #FF8A2B;
}

.page-about .about-dot--craft {
  background: #FFD166;
}

.page-about .about-team {
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin: 0;
  padding: 0;
}

.page-about .about-team__item {
  display: grid;
  gap: 6px;
  padding: 20px 18px;
  background: #0B2B20;
  border: 1px solid #1F6F5A;
  box-shadow: 5px 5px 0 rgba(43, 30, 92, 0.55);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-team__item:hover {
  transform: translateY(-4px);
  box-shadow: 7px 9px 0 rgba(255, 138, 43, 0.42);
}

.page-about .about-team__role {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: #9FB8AE;
}

.page-about .about-team__num {
  font-family: var(--font-num);
  font-weight: 600;
  font-size: 46px;
  line-height: 1;
  color: #FFD166;
}

.page-about .about-team__desc {
  font-size: 14px;
  line-height: 1.7;
  color: #9FB8AE;
}

/* ---------- 记录流程 ---------- */
.page-about .about-flow__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-about .about-flow__figure {
  margin: 0;
}

.page-about .about-flow__figure .media__img {
  width: 100%;
  aspect-ratio: 16 / 9;
}

.page-about .about-flow__text h2 {
  margin: 8px 0 0;
}

.page-about .about-steps {
  list-style: none;
  display: grid;
  gap: 14px;
  margin: 20px 0 0;
  padding: 0;
}

.page-about .about-steps__item {
  position: relative;
  padding: 16px 18px 16px 58px;
  background: #0B2B20;
  border: 1px solid #1F6F5A;
}

.page-about .about-steps__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: #E8F5EF;
}

.page-about .about-steps__idx {
  position: absolute;
  left: 18px;
  top: 17px;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: #FF8A2B;
}

.page-about .about-note {
  margin: 22px 0 0;
  border: 1px dashed #1F6F5A;
  background: rgba(11, 43, 32, 0.66);
}

.page-about .about-note__btn {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  background: none;
  border: 0;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: #7CF3D8;
}

.page-about .about-note__btn:hover {
  color: #FF8A2B;
}

.page-about .about-note__cue {
  font-family: var(--font-num);
  font-size: 16px;
  color: #FF8A2B;
  transition: transform var(--dur) var(--ease);
}

.page-about .about-note__btn[aria-expanded="true"] .about-note__cue {
  transform: rotate(45deg);
}

.page-about .about-note .disclosure__inner {
  padding: 0 16px 16px;
}

.page-about .about-note .disclosure__inner p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.72;
  color: #9FB8AE;
}

.page-about .about-note .disclosure__inner p:last-child {
  margin-bottom: 0;
}

/* ---------- 引文 ---------- */
.page-about .about-quote {
  margin: 0;
  padding: 30px 24px;
  background: #F2F7F4;
  color: #22453A;
  border: 1px solid #1F6F5A;
  box-shadow: 8px 8px 0 rgba(43, 30, 92, 0.6);
}

.page-about .about-quote p {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.42;
  letter-spacing: -0.01em;
  color: #0B2B20;
}

.page-about .about-quote cite {
  display: block;
  margin-top: 16px;
  font-family: var(--font-num);
  font-style: normal;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: #1F6F5A;
}

/* ---------- 据点与生态 ---------- */
.page-about .about-eco__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-about .about-eco__figure {
  margin: 0;
}

.page-about .about-eco__figure .media__img {
  width: 100%;
  aspect-ratio: 1 / 1;
}

.page-about .about-eco__text p {
  margin: 0 0 16px;
  font-size: 17px;
  line-height: 1.78;
  color: #E8F5EF;
}

.page-about .about-eco__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
}

.page-about .about-eco__tag {
  display: grid;
  gap: 3px;
  padding: 10px 14px;
  background: #0B2B20;
  border: 1px solid #1F6F5A;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-eco__tag:hover,
.page-about .about-eco__tag:focus-within {
  transform: translateY(-4px);
  border-color: #FF8A2B;
  background: #04140F;
}

.page-about .about-eco__name {
  font-size: 15px;
  font-weight: 600;
  color: #E8F5EF;
}

.page-about .about-eco__meta {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: #9FB8AE;
  opacity: 0.55;
  transition: opacity var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about .about-eco__tag:hover .about-eco__meta,
.page-about .about-eco__tag:focus-within .about-eco__meta {
  opacity: 1;
  color: #7CF3D8;
}

/* ---------- 版本演进 ---------- */
.page-about .about-years {
  position: relative;
  margin-top: 24px;
}

.page-about .about-years__list {
  list-style: none;
  position: relative;
  margin: 0;
  padding: 0 0 0 28px;
}

.page-about .about-years__list::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, #12E0B8, #1F6F5A 50%, #4A3A8C);
}

.page-about .about-years__item {
  position: relative;
  padding: 0 0 28px;
}

.page-about .about-years__item:last-child {
  padding-bottom: 0;
}

.page-about .about-years__tick {
  position: absolute;
  left: -28px;
  top: 3px;
  display: grid;
  place-items: center;
  width: 16px;
  height: 16px;
  color: #1F6F5A;
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-years__item:hover .about-years__tick {
  color: #FF8A2B;
  transform: scale(1.2);
}

.page-about .about-years__year {
  display: block;
  font-family: var(--font-num);
  font-weight: 600;
  font-size: 26px;
  line-height: 1;
  letter-spacing: 0.02em;
  color: #FFD166;
  transition: color var(--dur) var(--ease);
}

.page-about .about-years__item:hover .about-years__year {
  color: #FF8A2B;
}

.page-about .about-years__title {
  display: block;
  margin-top: 8px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 19px;
  color: #E8F5EF;
}

.page-about .about-years__desc {
  display: block;
  max-width: 680px;
  margin-top: 6px;
  font-size: 15px;
  line-height: 1.75;
  color: #9FB8AE;
}

/* ---------- 服务地区 ---------- */
.page-about .about-region__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-about .about-region__main p {
  margin: 0 0 18px;
  font-size: 17px;
  line-height: 1.78;
  color: #E8F5EF;
}

.page-about .about-region__cities {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
}

.page-about .about-region__cities li {
  padding: 6px 12px;
  border: 1px solid #1F6F5A;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: #7CF3D8;
}

.page-about .about-region__aside {
  padding: 20px 18px;
  background: rgba(43, 30, 92, 0.42);
  border-left: 2px solid #12E0B8;
}

.page-about .about-region__aside p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: #9FB8AE;
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  position: relative;
  overflow: hidden;
  padding: 56px 0 60px;
  background: linear-gradient(150deg, #2B1E5C 0%, #0B2B20 62%, #04140F 100%);
}

.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-about .about-cta h2 {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(24px, 3.2vw, 36px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: #E8F5EF;
}

.page-about .about-cta p {
  max-width: 640px;
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.75;
  color: #9FB8AE;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-dots {
    grid-template-columns: repeat(11, minmax(0, 1fr));
    max-width: 560px;
  }

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

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 32px 0 64px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: end;
  }

  .page-about .about-region__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 36px;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: 40px;
  }
}

@media (min-width: 960px) {
  .page-about .about-flow__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-eco__split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 36px;
    align-items: start;
  }
}

@media (min-width: 1060px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 56px;
  }

  .page-about .about-rail {
    display: block;
    position: sticky;
    top: calc(var(--quick-h) + 26px);
    align-self: start;
  }

  .page-about .about-quote {
    padding: 36px 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__item,
  .page-about .about-eco__tag,
  .page-about .about-years__tick,
  .page-about .about-note__cue {
    transition: none;
  }

  .page-about .about-team__item:hover,
  .page-about .about-eco__tag:hover,
  .page-about .about-years__item:hover .about-years__tick {
    transform: none;
  }
}