.page-about {
  --about-index-w: 196px;
  --about-rule: rgba(11, 31, 23, 0.16);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  position: relative;
  z-index: 1;
  margin-bottom: 22px;
}
.page-about .about-crumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}
.page-about .about-crumbs li {
  display: inline-flex;
  align-items: center;
}
.page-about .about-crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--teal);
}
.page-about .about-crumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.page-about .about-crumbs a:hover,
.page-about .about-crumbs a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}
.page-about .about-crumbs [aria-current="page"] {
  color: var(--white);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 20px 0 56px;
  background: var(--ink);
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  left: 44%;
  top: -30%;
  width: 96%;
  height: 165%;
  background: linear-gradient(155deg, var(--teal) 0%, rgba(23, 69, 58, 0) 70%);
  transform: rotate(-11deg);
  pointer-events: none;
}
.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
}
.page-about .about-kicker {
  display: inline-block;
  margin: 0 0 16px;
  padding: 5px 13px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--lime);
  border-radius: 999px;
}
.page-about .about-hero__copy .display {
  margin: 0 0 18px;
  color: var(--white);
  font-size: clamp(2rem, 6.6vw, 3.5rem);
  line-height: 1.03;
  letter-spacing: -0.02em;
  transform: skewX(-2deg);
}
.page-about .about-hero__lede {
  margin: 0 0 24px;
  max-width: 34em;
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(242, 234, 216, 0.88);
}
.page-about .about-hero__points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-about .about-hero__points li {
  position: relative;
  padding-left: 22px;
  font-size: 0.9rem;
  line-height: 1.65;
  color: rgba(242, 234, 216, 0.82);
}
.page-about .about-hero__points li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.55em;
  width: 9px;
  height: 9px;
  background: var(--orange);
  transform: rotate(45deg);
}
.page-about .about-hero__frame {
  position: relative;
  filter: drop-shadow(7px 7px 0 rgba(0, 0, 0, 0.55));
}
.page-about .about-hero__media {
  margin: 0;
  overflow: hidden;
  clip-path: polygon(0 7%, 100% 0, 100% 93%, 0 100%);
  background: var(--carbon);
}
.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* ---------- 数据条 ---------- */
.page-about .about-stats {
  background: var(--carbon);
  border-top: 2px solid var(--teal);
  border-bottom: 2px solid var(--teal);
  padding: 22px 0 24px;
}
.page-about .about-stats__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist);
}
.page-about .about-stats__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--teal);
  border: 1px solid var(--teal);
}
.page-about .about-stats__list li {
  background: var(--carbon);
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.page-about .about-stats__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 5vw, 2.2rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--lime);
}
.page-about .about-stats__num em {
  font-style: normal;
  font-size: 0.58em;
  margin-left: 2px;
}
.page-about .about-stats__label {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ---------- 斜切过渡 ---------- */
.page-about .about-slant {
  height: 42px;
  background: var(--paper);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
}

/* ---------- 正文外壳 ---------- */
.page-about .about-body {
  background: var(--paper);
  color: var(--ink);
  padding-bottom: 56px;
}
.page-about .about-body__inner {
  display: grid;
  gap: 28px;
  padding-top: 30px;
}

/* ---------- 章节索引 ---------- */
.page-about .about-index {
  min-width: 0;
}
.page-about .about-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--teal);
}
.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.page-about .about-index__list::-webkit-scrollbar {
  display: none;
}
.page-about .about-index__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  font-size: 0.82rem;
  line-height: 1.3;
  white-space: nowrap;
  color: var(--ink);
  text-decoration: none;
  background: var(--white);
  border: 2px solid var(--about-rule);
  border-radius: 999px;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  background: var(--ink);
  color: var(--lime);
  border-color: var(--ink);
}
.page-about .about-index__num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--teal);
}
.page-about .about-index__link:hover .about-index__num,
.page-about .about-index__link:focus-visible .about-index__num {
  color: var(--orange);
}

/* ---------- 章节 ---------- */
.page-about .about-main {
  min-width: 0;
}
.page-about .about-sec {
  padding-top: 28px;
  margin-top: 28px;
  border-top: 2px solid var(--about-rule);
  scroll-margin-top: 96px;
}
.page-about .about-sec:first-child {
  padding-top: 0;
  margin-top: 0;
  border-top: none;
}
.page-about .about-sec__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.page-about .about-sec__num {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 26px;
  background: var(--ink);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  border-radius: 3px;
  transform: skewX(-8deg);
}
.page-about .about-sec__head .header-xl {
  margin: 0;
  font-size: clamp(1.3rem, 3.6vw, 1.85rem);
  line-height: 1.24;
  color: var(--ink);
}
.page-about .about-sec p {
  margin: 0 0 14px;
  max-width: 46rem;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink);
}
.page-about .about-sec p.about-lead {
  margin: 0 0 20px;
  padding-left: 15px;
  border-left: 4px solid var(--orange);
  font-size: 1.06rem;
  line-height: 1.8;
  font-weight: 500;
  max-width: 44rem;
}

/* 组件内段落统一收窄 */
.page-about .about-pillars__item p,
.page-about .about-levels__item p,
.page-about .about-timeline__card p,
.page-about .about-proof__steps p,
.page-about .about-reasons__card p,
.page-about .about-facts p,
.page-about .about-coverage__unit {
  margin: 0;
  max-width: none;
  font-size: 0.87rem;
  line-height: 1.7;
}

/* ---------- 品牌支柱 ---------- */
.page-about .about-pillars {
  display: grid;
  gap: 12px;
  margin: 20px 0;
}
.page-about .about-pillars__item {
  padding: 16px;
  background: var(--white);
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 var(--teal);
}
.page-about .about-pillars__item h3 {
  margin: 0 0 8px;
  font-size: 0.96rem;
  line-height: 1.4;
  color: var(--ink);
}
.page-about .about-note {
  margin: 16px 0 0;
  padding: 12px 14px;
  background: rgba(200, 255, 61, 0.45);
  border-left: 4px solid var(--lime);
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--ink);
}

/* ---------- 内容层级 ---------- */
.page-about .about-split {
  display: grid;
  gap: 24px;
}
.page-about .about-levels {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-levels__item {
  display: flex;
  gap: 13px;
  padding: 14px 0;
  border-bottom: 1px dashed rgba(11, 31, 23, 0.26);
}
.page-about .about-levels__item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.page-about .about-levels__idx {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 24px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--ink);
  background: var(--orange);
  border-radius: 3px;
}
.page-about .about-levels__title {
  margin: 0 0 5px;
  font-size: 0.98rem;
  line-height: 1.4;
  color: var(--ink);
}

/* ---------- 图片框 ---------- */
.page-about .about-figure {
  margin: 0;
  background: var(--carbon);
  border: 2px solid var(--ink);
  box-shadow: 6px 6px 0 rgba(11, 31, 23, 0.85);
  overflow: hidden;
}
.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}
.page-about .about-figure--wide img {
  aspect-ratio: 3 / 2;
}
.page-about .about-figure figcaption {
  padding: 10px 12px;
  font-size: 0.75rem;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--mist);
  background: var(--carbon);
  border-top: 2px solid var(--ink);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 12px;
  margin: 18px 0 22px;
}
.page-about .about-team__card {
  position: relative;
  display: block;
  padding: 16px 15px;
  background: var(--ink);
  color: var(--paper);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.page-about .about-team__card:hover,
.page-about .about-team__card:focus-within {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--orange);
}
.page-about .about-team__role {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--lime);
}
.page-about .about-team__count {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.9rem;
  line-height: 1;
  color: var(--white);
}
.page-about .about-team__count small {
  font-size: 0.48em;
  margin-left: 4px;
  color: var(--mist);
}
.page-about .about-team__desc {
  display: block;
  margin-top: 10px;
  font-size: 0.84rem;
  line-height: 1.65;
  color: rgba(242, 234, 216, 0.82);
}
.page-about .about-team__more {
  display: block;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 0.8rem;
  line-height: 1.65;
  color: var(--lime);
  transition: max-height 0.28s ease, opacity 0.28s ease, margin-top 0.28s ease;
}
.page-about .about-team__card:hover .about-team__more,
.page-about .about-team__card:focus-within .about-team__more {
  max-height: 140px;
  opacity: 1;
  margin-top: 8px;
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 18px 0 24px;
  padding: 0 0 0 26px;
  position: relative;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: repeating-linear-gradient(
    to bottom,
    var(--teal) 0 8px,
    transparent 8px 16px
  );
}
.page-about .about-timeline__item {
  position: relative;
  padding-bottom: 16px;
}
.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
}
.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 8px;
  width: 10px;
  height: 10px;
  background: var(--orange);
  border: 2px solid var(--paper);
  transform: rotate(45deg);
}
.page-about .about-timeline__card {
  padding: 14px 15px;
  background: var(--white);
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 rgba(11, 31, 23, 0.18);
}
.page-about .about-timeline__card h3 {
  margin: 0 0 6px;
  font-size: 0.98rem;
  line-height: 1.4;
  color: var(--ink);
}
.page-about .about-timeline__tag {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
}

/* ---------- 校对流程 ---------- */
.page-about .about-proof {
  margin-top: 24px;
  padding: 18px 16px;
  background: var(--ink);
  border-radius: var(--radius);
  box-shadow: 6px 6px 0 var(--teal);
}
.page-about .about-proof h3 {
  margin: 0 0 14px;
  font-size: 1rem;
  line-height: 1.4;
  color: var(--lime);
}
.page-about .about-proof__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-about .about-proof__steps li {
  padding: 12px;
  background: rgba(255, 253, 245, 0.06);
  border: 1px solid rgba(200, 255, 61, 0.28);
  border-radius: 8px;
}
.page-about .about-proof__stage {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: var(--orange);
}
.page-about .about-proof__steps strong {
  display: block;
  margin-bottom: 6px;
  font-size: 0.96rem;
  color: var(--white);
}
.page-about .about-sec .about-proof__steps p {
  color: rgba(242, 234, 216, 0.8);
}

/* ---------- 覆盖范围 ---------- */
.page-about .about-coverage__grid {
  list-style: none;
  margin: 18px 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(11, 31, 23, 0.24);
  border: 2px solid var(--ink);
}
.page-about .about-coverage__grid li {
  background: var(--paper);
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-height: 84px;
}
.page-about .about-coverage__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.4rem;
  line-height: 1;
  color: var(--teal);
}
.page-about .about-coverage__num em {
  font-style: normal;
  font-size: 0.6em;
  margin-left: 1px;
}
.page-about .about-coverage__unit {
  display: block;
  color: var(--ink);
}
.page-about .about-facts {
  margin-top: 18px;
  padding: 14px 15px;
  border: 2px dashed rgba(11, 31, 23, 0.32);
  display: grid;
  gap: 9px;
}
.page-about .about-facts p {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  word-break: break-word;
}
.page-about .about-facts strong {
  flex: none;
  min-width: 68px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--teal);
}
.page-about .about-facts span {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--ink);
}

/* ---------- 选择理由 ---------- */
.page-about .about-reasons {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-about .about-reasons__card {
  position: relative;
  padding: 18px 16px 16px;
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: 0 var(--radius) var(--radius) var(--radius);
  box-shadow: 5px 5px 0 rgba(11, 31, 23, 0.16);
}
.page-about .about-reasons__card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 26px;
  height: 26px;
  background: var(--lime);
  clip-path: polygon(100% 0, 0 0, 100% 100%);
}
.page-about .about-reasons__idx {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--teal);
}
.page-about .about-reasons__card h3 {
  margin: 0 0 8px;
  font-size: 0.98rem;
  line-height: 1.4;
  color: var(--ink);
}

/* ---------- 结尾动作 ---------- */
.page-about .about-cta {
  margin-top: 28px;
  padding: 22px 18px;
  background: var(--ink);
  border-radius: var(--radius);
  box-shadow: 6px 6px 0 var(--orange);
}
.page-about .about-cta h3 {
  margin: 0 0 8px;
  font-size: 1.06rem;
  line-height: 1.4;
  color: var(--white);
}
.page-about .about-sec .about-cta p {
  margin: 0 0 16px;
  font-size: 0.88rem;
  line-height: 1.7;
  color: rgba(242, 234, 216, 0.8);
}
.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-about .about-team {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-slant {
    height: 56px;
  }
}

@media (min-width: 700px) {
  .page-about .about-levels__item:nth-child(2) {
    margin-left: 22px;
  }
  .page-about .about-levels__item:nth-child(3) {
    margin-left: 44px;
  }
  .page-about .about-levels__item:nth-child(4) {
    margin-left: 66px;
  }
  .page-about .about-levels__item:nth-child(5) {
    margin-left: 88px;
  }
}

@media (min-width: 760px) {
  .page-about .about-hero {
    padding: 26px 0 72px;
  }
  .page-about .about-stats__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-pillars {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-proof__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }
  .page-about .about-coverage__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-reasons {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    gap: 32px;
    align-items: start;
  }
  .page-about .about-figure {
    position: sticky;
    top: 100px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 44px;
    align-items: center;
  }
  .page-about .about-hero__lede {
    font-size: 1.06rem;
  }
  .page-about .about-slant {
    height: 68px;
  }
}

@media (min-width: 980px) {
  .page-about .about-body__inner {
    grid-template-columns: var(--about-index-w) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
    padding-top: 44px;
  }
  .page-about .about-index {
    position: sticky;
    top: 100px;
  }
  .page-about .about-index__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
    border-left: 2px solid var(--about-rule);
  }
  .page-about .about-index__link {
    background: transparent;
    border: none;
    border-radius: 0;
    border-left: 3px solid transparent;
    margin-left: -3px;
    padding: 10px 14px;
    white-space: normal;
  }
  .page-about .about-index__link:hover,
  .page-about .about-index__link:focus-visible {
    background: rgba(11, 31, 23, 0.07);
    color: var(--ink);
    border-left-color: var(--orange);
  }
  .page-about .about-index__link:hover .about-index__num,
  .page-about .about-index__link:focus-visible .about-index__num {
    color: var(--teal);
  }
  .page-about .about-team {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-about .about-figure figcaption {
    font-size: 0.78rem;
  }
}

@media (hover: none) {
  .page-about .about-team__more {
    max-height: none;
    opacity: 1;
    margin-top: 8px;
  }
  .page-about .about-team__card:hover,
  .page-about .about-team__card:focus-within {
    transform: none;
    box-shadow: 4px 4px 0 var(--orange);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index__link,
  .page-about .about-team__card,
  .page-about .about-team__more,
  .page-about .about-crumbs a {
    transition: none;
  }
  .page-about .about-hero__copy .display,
  .page-about .about-sec__num {
    transform: none;
  }
}