.page-about {
  overflow-x: clip;
  color: var(--ink);
  font-family: var(--font-sans);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-top: clamp(18px, 3vw, 30px);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--rock);
}
.page-about .breadcrumb a {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(28, 108, 153, 0.28);
}
.page-about .breadcrumb a:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}
.page-about .breadcrumb__sep {
  color: var(--moss);
}

/* ---------- 首屏拼贴 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(20px, 3.6vw, 40px) 0 clamp(38px, 6vw, 78px);
}
.page-about .hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 22px);
}
.page-about .hero-main {
  position: relative;
  overflow: hidden;
  background: var(--ice-light);
  clip-path: var(--cut-corner);
  padding: clamp(26px, 4vw, 52px) clamp(22px, 3.4vw, 46px) clamp(30px, 4.4vw, 56px);
}
.page-about .hero-main::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 7px;
  background: linear-gradient(90deg, var(--ice-deep) 0 30%, var(--ice) 30% 62%, var(--moss) 62% 84%, var(--signal) 84% 100%);
}
.page-about .hero-main::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -90px;
  width: 280px;
  height: 280px;
  background: repeating-linear-gradient(105deg, rgba(28, 108, 153, 0.14) 0 4px, transparent 4px 17px);
  pointer-events: none;
}
.page-about .hero-main .kicker {
  position: relative;
  z-index: 1;
  font-family: var(--font-cond);
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--field);
  margin: 0 0 14px;
}
.page-about .hero-main h1 {
  position: relative;
  z-index: 1;
  margin: 0 0 20px;
  font-size: clamp(1.95rem, 4.6vw, 3.4rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  max-width: 17ch;
}
.page-about .hero-main .lede {
  position: relative;
  z-index: 1;
  margin: 0 0 26px;
  max-width: 46ch;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--ink);
}
.page-about .hero-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .hero-side {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(12px, 1.6vw, 18px);
  align-content: start;
}
.page-about .hero-stat {
  display: grid;
  gap: 8px;
  background: var(--ice-deep);
  color: var(--paper);
  clip-path: var(--cut-corner);
  padding: clamp(18px, 2.4vw, 26px);
}
.page-about .hero-stat--alt {
  background: var(--field);
}
.page-about .hero-stat--thin {
  background: var(--paper);
  color: var(--ink);
  box-shadow: inset 0 0 0 2px var(--moss);
}
.page-about .hero-stat__num {
  font-family: var(--font-cond);
  font-size: clamp(2.05rem, 3.6vw, 2.85rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
  color: var(--paper);
}
.page-about .hero-stat--thin .hero-stat__num {
  color: var(--clay);
}
.page-about .hero-stat__label {
  font-size: 0.84rem;
  line-height: 1.65;
  letter-spacing: 0.01em;
  opacity: 0.9;
}

@media (min-width: 920px) {
  .page-about .hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }
  .page-about .hero-side .hero-stat--thin {
    margin-left: 16%;
  }
  .page-about .hero-side .hero-stat--alt {
    margin-right: 10%;
  }
}

/* ---------- 章节骨架 ---------- */
.page-about .about-sec {
  position: relative;
  padding: clamp(44px, 6vw, 88px) 0;
}
.page-about .sec--paper {
  background: var(--paper);
}
.page-about .sec--ice {
  background: var(--ice-light);
}
.page-about .sec--deep {
  background: var(--ice-deep);
  color: var(--paper);
}
.page-about .about-rule {
  height: 6px;
  width: clamp(72px, 14vw, 190px);
  margin-bottom: clamp(18px, 2.6vw, 28px);
  background: linear-gradient(90deg, var(--ice-deep), var(--ice) 55%, var(--signal));
  transform: skewX(-15deg);
}
.page-about .about-rule--light {
  background: linear-gradient(90deg, var(--moss), var(--ice-light) 60%, var(--signal));
}
.page-about .about-sec .section-head {
  margin-bottom: clamp(26px, 4vw, 44px);
}
.page-about .about-sec .kicker {
  font-family: var(--font-cond);
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clay);
  margin: 0 0 12px;
}
.page-about .about-sec h2 {
  margin: 0;
  font-size: clamp(1.5rem, 3.1vw, 2.35rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.015em;
  max-width: 24ch;
}
.page-about .about-sec .lede {
  margin: 16px 0 0;
  max-width: 52ch;
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--rock);
}
.page-about .sec--deep .kicker {
  color: var(--moss);
}
.page-about .sec--deep h2 {
  color: var(--paper);
}
.page-about .sec--deep .lede {
  color: rgba(245, 242, 233, 0.78);
}

/* ---------- 起点与定位 ---------- */
.page-about .origin-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 44px);
}
.page-about .origin-body p {
  margin: 0 0 16px;
  max-width: 40ch;
  font-size: 0.97rem;
  line-height: 1.82;
}
.page-about .origin-body p:last-child {
  margin-bottom: 0;
}
.page-about .origin-aside {
  background: var(--paper);
  clip-path: var(--cut-top);
  padding: clamp(20px, 2.8vw, 30px);
}
.page-about .origin-aside__k {
  margin: 0 0 14px;
  font-family: var(--font-cond);
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--field);
}
.page-about .origin-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}
.page-about .origin-list li {
  position: relative;
  padding-left: 20px;
  font-size: 0.9rem;
  line-height: 1.7;
}
.page-about .origin-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 9px;
  height: 9px;
  background: var(--moss);
  transform: rotate(45deg);
}
.page-about .origin-aside__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid rgba(107, 101, 89, 0.3);
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--rock);
}

@media (min-width: 900px) {
  .page-about .origin-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(30px, 4vw, 60px);
  }
}

/* ---------- 吉林服务版图 ---------- */
.page-about .coverage-map {
  margin: 0 0 clamp(26px, 3.6vw, 42px);
  background: var(--ice-deep);
  clip-path: var(--cut-top);
}
.page-about .coverage-map img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 11 / 7;
  object-fit: cover;
}
.page-about .coverage-map figcaption {
  padding: 13px clamp(16px, 2.4vw, 26px) 15px;
  font-size: 0.8rem;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--ice-light);
}
.page-about .coverage-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 48px);
}
.page-about .coverage-copy p {
  margin: 0 0 16px;
  max-width: 42ch;
  font-size: 0.97rem;
  line-height: 1.82;
}
.page-about .coverage-copy p:last-child {
  margin-bottom: 0;
}
.page-about .coverage-cities__t {
  margin: 0 0 14px;
  font-family: var(--font-cond);
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--field);
}
.page-about .city-strip {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-about .city-strip li {
  font-family: var(--font-cond);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  padding: 8px 15px;
  background: var(--ice-light);
  color: var(--ice-deep);
  clip-path: polygon(7px 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%, 0 7px);
}
.page-about .city-strip li:nth-child(3n + 2) {
  background: var(--moss);
  color: var(--paper);
}

@media (min-width: 900px) {
  .page-about .coverage-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }
}

/* ---------- 分层导航方法 ---------- */
.page-about .lanes {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}
.page-about .lane {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 18px;
  align-items: start;
  padding: clamp(20px, 2.8vw, 30px) clamp(20px, 3vw, 34px);
  background: var(--paper);
  clip-path: var(--cut-corner);
  overflow: hidden;
  --lane-c: var(--ice);
}
.page-about .lane::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 7px;
  background: var(--lane-c);
}
.page-about .lane--a { --lane-c: var(--ice-deep); }
.page-about .lane--b { --lane-c: var(--field); }
.page-about .lane--c { --lane-c: var(--moss); }
.page-about .lane--d { --lane-c: var(--clay); }
.page-about .lane__no {
  grid-row: 1 / span 2;
  font-family: var(--font-cond);
  font-size: 2.1rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--lane-c);
  font-variant-numeric: tabular-nums;
}
.page-about .lane__body h3 {
  margin: 0 0 8px;
  font-size: 1.06rem;
  font-weight: 800;
  letter-spacing: -0.005em;
}
.page-about .lane__body p {
  margin: 0;
  max-width: 52ch;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--rock);
}
.page-about .lane-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 36px);
}

/* ---------- 编辑团队 ---------- */
.page-about .team-figure {
  margin: 0 0 clamp(26px, 3.6vw, 44px);
  background: var(--ice-deep);
  clip-path: var(--cut-corner);
}
.page-about .team-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.page-about .team-figure figcaption {
  padding: 13px clamp(16px, 2.4vw, 26px) 15px;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--ice-light);
}
.page-about .team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 3.6vw, 52px);
}
.page-about .team-copy p {
  margin: 0 0 16px;
  max-width: 42ch;
  font-size: 0.97rem;
  line-height: 1.82;
}
.page-about .team-copy p:last-child {
  margin-bottom: 0;
}
.page-about .roles {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
  align-content: start;
}
.page-about .role {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 16px;
  row-gap: 4px;
  align-items: center;
}
.page-about .role__disc {
  grid-row: 1 / span 2;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--ice-light);
  color: var(--ice-deep);
  font-family: var(--font-cond);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.06em;
}
.page-about .role:nth-child(2n) .role__disc {
  background: var(--moss);
  color: var(--paper);
}
.page-about .role__name {
  font-size: 0.98rem;
  font-weight: 800;
}
.page-about .role__desc {
  font-size: 0.85rem;
  line-height: 1.68;
  color: var(--rock);
}

@media (min-width: 900px) {
  .page-about .team-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }
}

/* ---------- 阶段演进 ---------- */
.page-about .stages-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}
.page-about .timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 12px;
  bottom: 14px;
  width: 2px;
  background: linear-gradient(180deg, var(--ice-deep) 0%, var(--ice) 32%, var(--moss) 64%, var(--signal) 100%);
}
.page-about .timeline__item {
  position: relative;
  padding-left: 40px;
  padding-bottom: clamp(26px, 4vw, 44px);
}
.page-about .timeline__item:last-child {
  padding-bottom: 0;
}
.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 16px;
  height: 16px;
  background: var(--paper);
  border: 2px solid var(--ice);
  transform: rotate(45deg);
}
.page-about .timeline__item:nth-child(2)::before { border-color: var(--field); }
.page-about .timeline__item:nth-child(3)::before { border-color: var(--moss); }
.page-about .timeline__item:nth-child(4)::before { border-color: var(--signal); }
.page-about .timeline__mark {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 6px;
}
.page-about .timeline__no {
  font-family: var(--font-cond);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--clay);
  font-variant-numeric: tabular-nums;
}
.page-about .timeline__tag {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--rock);
}
.page-about .timeline__body h3 {
  margin: 0 0 8px;
  font-size: 1.06rem;
  font-weight: 800;
  letter-spacing: -0.005em;
}
.page-about .timeline__body p {
  margin: 0;
  max-width: 46ch;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--rock);
}
.page-about .stages-figure {
  margin: 0;
  background: var(--ice-deep);
  clip-path: var(--cut-top);
}
.page-about .stages-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 25 / 14;
  object-fit: cover;
}
.page-about .stages-figure figcaption {
  padding: 13px clamp(16px, 2.4vw, 26px) 15px;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--ice-light);
}

@media (min-width: 940px) {
  .page-about .stages-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }
  .page-about .stages-figure {
    position: sticky;
    top: 96px;
  }
}

/* ---------- 协作生态 ---------- */
.page-about .partner-grid {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}
.page-about .partner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  column-gap: 8px;
  row-gap: 8px;
  padding: clamp(20px, 2.8vw, 30px);
  background: var(--ice-light);
  clip-path: var(--cut-corner);
}
.page-about .partner__num {
  font-family: var(--font-cond);
  font-size: clamp(2.3rem, 4vw, 3rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--clay);
  font-variant-numeric: tabular-nums;
}
.page-about .partner__unit {
  font-size: 0.85rem;
  color: var(--rock);
  margin-left: -4px;
}
.page-about .partner__name {
  grid-column: 1 / -1;
  font-size: 1.05rem;
  font-weight: 800;
}
.page-about .partner__desc {
  grid-column: 1 / -1;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--rock);
  max-width: 40ch;
}
.page-about .partner-note {
  margin-top: clamp(24px, 3.4vw, 40px);
  padding-top: clamp(20px, 2.8vw, 30px);
  border-top: 2px solid rgba(107, 101, 89, 0.28);
  display: grid;
  gap: 18px;
  justify-items: start;
}
.page-about .partner-note p {
  margin: 0;
  max-width: 56ch;
  font-size: 0.95rem;
  line-height: 1.8;
}

@media (min-width: 860px) {
  .page-about .partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 服务承诺 ---------- */
.page-about .pledge {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: rgba(211, 230, 240, 0.3);
}
.page-about .pledge li {
  display: grid;
  gap: 10px;
  align-content: start;
  background: var(--ice-deep);
  padding: clamp(22px, 3vw, 32px) clamp(18px, 2.6vw, 30px);
}
.page-about .pledge__k {
  font-family: var(--font-cond);
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--signal);
  font-variant-numeric: tabular-nums;
}
.page-about .pledge__t {
  font-size: 1rem;
  font-weight: 800;
  color: var(--paper);
}
.page-about .pledge__d {
  font-size: 0.88rem;
  line-height: 1.78;
  color: rgba(245, 242, 233, 0.78);
}
.page-about .promise-foot {
  margin: clamp(26px, 3.4vw, 38px) 0 16px;
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(245, 242, 233, 0.82);
  max-width: 52ch;
}

@media (min-width: 860px) {
  .page-about .pledge {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}