.page-about {
  --about-tint: #EDE7D8;
  --about-cut: 20px;
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  background: var(--ink);
  padding: 18px 0 0;
}
.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--on-dark);
}
.page-about .breadcrumb a {
  color: var(--gold-light);
  text-decoration: none;
}
.page-about .breadcrumb a:hover {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.page-about .breadcrumb__sep {
  color: rgba(201, 162, 39, 0.5);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  background: var(--ink);
  color: var(--on-dark-strong);
  padding: 30px 0 68px;
  overflow: hidden;
}
.page-about .about-hero__glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 78% at 82% 0%, rgba(201, 162, 39, 0.18), transparent 62%);
  pointer-events: none;
}
.page-about .about-hero__trace {
  position: absolute;
  left: -8%;
  top: 58%;
  width: 116%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201, 162, 39, 0.55), transparent);
  transform: rotate(-7deg);
  pointer-events: none;
}
.page-about .about-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

.page-about .about-hero__ticks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
}
.page-about .about-hero__tick {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-left: 11px;
  border-left: 1px solid var(--line);
}
.page-about .about-hero__tick-num {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--gold);
  letter-spacing: 0.05em;
  line-height: 1.1;
}
.page-about .about-hero__tick-label {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--on-dark);
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.95rem, 5.6vw, 3.5rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin: 14px 0 0;
  color: var(--on-dark-strong);
}
.page-about .about-hero__lede {
  margin: 22px 0 0;
  max-width: 44ch;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--on-dark);
}
.page-about .about-hero__actions {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-hero__actions .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 12px 22px;
  font-size: 0.92rem;
  text-decoration: none;
  border: 1px solid transparent;
  clip-path: polygon(12px 0, 100% 0, 100% 100%, 0 100%, 0 12px);
  transition: transform 0.16s ease, background-color 0.16s ease, color 0.16s ease;
}
.page-about .about-hero__actions .btn--gold {
  background: var(--gold);
  color: var(--ink);
  font-weight: 600;
}
.page-about .about-hero__actions .btn--gold:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
}
.page-about .about-hero__actions .btn--ghost {
  border-color: var(--line);
  color: var(--on-dark-strong);
}
.page-about .about-hero__actions .btn--ghost:hover {
  border-color: var(--gold);
  color: var(--gold-light);
  transform: translateY(-2px);
}

.page-about .about-hero__media {
  margin: 0;
  position: relative;
  background: var(--ink-2);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
}
.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(14, 15, 18, 0) 55%, rgba(14, 15, 18, 0.55) 100%);
  pointer-events: none;
}
.page-about .about-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 通用小标题 ---------- */
.page-about .about-head {
  max-width: 60ch;
  margin-bottom: 40px;
}
.page-about .about-head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.55rem, 3.5vw, 2.25rem);
  line-height: 1.32;
  margin: 10px 0 0;
  color: var(--ink);
}
.page-about .about-head__note {
  margin: 14px 0 0;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--stone);
}
.page-about .about-head--dark h2 {
  color: var(--on-dark-strong);
}
.page-about .about-head--dark .about-head__note {
  color: var(--on-dark);
}
.page-about .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold-dark);
  margin: 0;
}
.page-about .about-hero .eyebrow,
.page-about .about-timeline .eyebrow {
  color: var(--gold);
}

/* ---------- 我们做什么 ---------- */
.page-about .about-what {
  background: var(--paper);
  padding: 68px 0 72px;
}
.page-about .about-what__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}
.page-about .about-card {
  position: relative;
  background: var(--paper-2);
  padding: 32px 24px 26px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
  transition: transform 0.18s ease, background-color 0.18s ease;
}
.page-about .about-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 58px;
  height: 3px;
  background: var(--gold);
}
.page-about .about-card:hover {
  transform: translateY(-4px);
  background: #FFFEFA;
}
.page-about .about-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.75rem;
  letter-spacing: 0.06em;
  color: var(--gold-dark);
  line-height: 1;
}
.page-about .about-card h3 {
  font-family: var(--font-display);
  font-size: 1.24rem;
  font-weight: 700;
  margin: 16px 0 0;
  color: var(--ink);
}
.page-about .about-card p {
  margin: 12px 0 0;
  font-size: 0.95rem;
  line-height: 1.88;
  color: var(--stone);
}
.page-about .about-card__link {
  display: inline-block;
  margin-top: 18px;
  font-size: 0.88rem;
  color: var(--jade);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 111, 107, 0.35);
  padding-bottom: 2px;
}
.page-about .about-card__link:hover {
  color: var(--gold-dark);
  border-bottom-color: var(--gold);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background: var(--about-tint);
  padding: 68px 0 72px;
}
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
}
.page-about .about-team__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}
.page-about .about-team__member {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px 18px 18px 16px;
  background: rgba(255, 253, 247, 0.72);
  border-left: 2px solid transparent;
  transition: border-color 0.18s ease, transform 0.18s ease, background-color 0.18s ease;
}
.page-about .about-team__member:hover {
  border-left-color: var(--gold);
  transform: translateX(4px);
  background: var(--paper-2);
}
.page-about .about-team__badge {
  flex: none;
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--gold-dark);
  background: var(--ink);
  clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
}
.page-about .about-team__body h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.08rem;
  color: var(--ink);
}
.page-about .about-team__body p {
  margin: 6px 0 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--stone);
}
.page-about .about-team__media {
  margin: 0;
}
.page-about .about-team__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
}
.page-about .about-team__media figcaption,
.page-about .about-flow__media figcaption {
  margin-top: 12px;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--stone);
  line-height: 1.7;
}

/* ---------- 流程 ---------- */
.page-about .about-flow {
  background: var(--paper-2);
  padding: 68px 0 72px;
}
.page-about .about-flow__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}
.page-about .about-flow__media {
  margin: 0;
}
.page-about .about-flow__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--ink);
}
.page-about .about-flow__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: flow;
}
.page-about .about-flow__step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--paper);
  padding: 20px 22px;
  border-left: 3px solid var(--gold);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  transition: background-color 0.18s ease, transform 0.18s ease;
}
.page-about .about-flow__step:nth-child(even) {
  border-left-color: var(--jade);
  clip-path: polygon(18px 0, 100% 0, 100% 100%, 0 100%, 0 18px);
}
.page-about .about-flow__step:hover {
  background: #FFFEFA;
  transform: translateX(3px);
}
.page-about .about-flow__idx {
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--gold-dark);
  letter-spacing: 0.06em;
  padding-top: 2px;
}
.page-about .about-flow__step h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.06rem;
  color: var(--ink);
}
.page-about .about-flow__step p {
  margin: 7px 0 0;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--stone);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  background: var(--ink);
  color: var(--on-dark-strong);
  padding: 68px 0 74px;
  overflow: hidden;
}
.page-about .about-timeline__scroller {
  overflow-x: auto;
  overflow-y: hidden;
  padding: 10px 0 28px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}
.page-about .about-timeline__scroller:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: -2px;
}
.page-about .about-timeline__track {
  list-style: none;
  margin: 0;
  padding: 0 24px;
  display: flex;
  gap: 22px;
  min-width: max-content;
}
.page-about .about-timeline__node {
  position: relative;
  flex: 0 0 258px;
  scroll-snap-align: start;
  padding: 30px 18px 22px 0;
  border-top: 1px solid rgba(31, 111, 107, 0.75);
}
.page-about .about-timeline__node::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 5px rgba(201, 162, 39, 0.16);
}
.page-about .about-timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  letter-spacing: 0.1em;
  color: var(--gold);
}
.page-about .about-timeline__node h3 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: 1.12rem;
  color: var(--on-dark-strong);
}
.page-about .about-timeline__node p {
  margin: 10px 0 0;
  font-size: 0.9rem;
  line-height: 1.82;
  color: var(--on-dark);
}

/* ---------- 服务地区 ---------- */
.page-about .about-reach {
  background: var(--paper);
  padding: 68px 0 72px;
}
.page-about .about-reach__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}
.page-about .about-reach__copy h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.2vw, 2.1rem);
  line-height: 1.34;
  margin: 10px 0 0;
  color: var(--ink);
}
.page-about .about-reach__copy p {
  margin: 16px 0 0;
  font-size: 0.96rem;
  line-height: 1.88;
  color: var(--stone);
}
.page-about .about-reach__actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-reach__actions .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 12px 20px;
  font-size: 0.9rem;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
  border: 1px solid transparent;
  clip-path: polygon(11px 0, 100% 0, 100% 100%, 0 100%, 0 11px);
  transition: background-color 0.16s ease, color 0.16s ease, border-color 0.16s ease, transform 0.16s ease;
}
.page-about .about-reach__actions .btn--gold {
  background: var(--gold);
  color: var(--ink);
  font-weight: 600;
}
.page-about .about-reach__actions .btn--gold:hover {
  background: var(--gold-dark);
  color: var(--paper-2);
  transform: translateY(-2px);
}
.page-about .about-reach__actions .btn--outline {
  background: transparent;
  border-color: var(--jade);
  color: var(--jade);
}
.page-about .about-reach__actions .btn--outline:hover {
  background: var(--jade);
  color: var(--paper-2);
  transform: translateY(-2px);
}
.page-about .about-reach__actions .btn--outline[data-copied] {
  background: var(--jade);
  color: var(--paper-2);
}
.page-about .about-reach__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.page-about .about-reach__stat {
  background: var(--paper-2);
  padding: 22px 18px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.page-about .about-reach__stat-num {
  font-family: var(--font-mono);
  font-size: 2.1rem;
  line-height: 1;
  color: var(--gold-dark);
  letter-spacing: 0.02em;
}
.page-about .about-reach__stat-label {
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--stone);
}

/* ---------- 坚持 ---------- */
.page-about .about-belief {
  background: var(--about-tint);
  padding: 68px 0 72px;
}
.page-about .about-belief__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-about .about-belief__item details {
  background: var(--paper-2);
  padding: 4px 20px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}
.page-about .about-belief__item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  font-family: var(--font-display);
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--ink);
}
.page-about .about-belief__item summary::-webkit-details-marker {
  display: none;
}
.page-about .about-belief__sign {
  flex: none;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--gold-dark);
  background: rgba(201, 162, 39, 0.14);
  transition: transform 0.18s ease, background-color 0.18s ease;
}
.page-about .about-belief__item details[open] .about-belief__sign {
  transform: rotate(45deg);
  background: rgba(201, 162, 39, 0.28);
}
.page-about .about-belief__item p {
  margin: 0 0 20px;
  max-width: 62ch;
  font-size: 0.93rem;
  line-height: 1.88;
  color: var(--stone);
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  background: var(--ink-2);
  color: var(--on-dark-strong);
  padding: 64px 0 70px;
}
.page-about .about-next h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.2vw, 2.1rem);
  line-height: 1.34;
  margin: 12px 0 0;
  color: var(--on-dark-strong);
}
.page-about .about-next__grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}
.page-about .about-next__card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 20px;
  text-decoration: none;
  background: rgba(245, 241, 231, 0.05);
  border-left: 2px solid var(--jade);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  transition: background-color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}
.page-about .about-next__card:hover {
  background: rgba(201, 162, 39, 0.12);
  border-left-color: var(--gold);
  transform: translateY(-3px);
}
.page-about .about-next__tag {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--gold-light);
}
.page-about .about-next__desc {
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--on-dark);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-what__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-team__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-reach__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 40px 0 88px;
  }
  .page-about .about-hero__inner {
    grid-template-columns: 92px minmax(0, 1fr) minmax(300px, 400px);
    gap: 44px;
    align-items: start;
  }
  .page-about .about-hero__ticks {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 26px;
    border-left: 1px solid var(--line);
    padding-left: 16px;
  }
  .page-about .about-hero__tick {
    border-left: 0;
    padding-left: 0;
  }
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 48px;
    align-items: start;
  }
  .page-about .about-flow__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
    align-items: start;
  }
  .page-about .about-reach__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }
  .page-about .about-next__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1288px) {
  .page-about .about-timeline__track {
    padding-left: calc((100vw - 1240px) / 2);
    padding-right: calc((100vw - 1240px) / 2);
  }
  .page-about .about-team__list {
    grid-template-columns: minmax(0, 1fr);
  }
}