.page-about {
  --about-body: #cfe3dd;
  --about-shadow: 0 24px 60px rgba(0, 0, 0, .35);
  background: var(--ink);
  color: var(--text);
  overflow-x: clip;
}

/* 面包屑 */
.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: clamp(16px, 4vw, 26px);
  font-family: var(--font-narrow);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

.page-about .breadcrumb a {
  color: var(--cyan);
  text-decoration: none;
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  text-decoration: underline;
}

/* 首屏 */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(22px, 5vw, 56px) clamp(40px, 7vw, 84px);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 82% at 94% -12%, rgba(53, 240, 200, .16), transparent 62%),
    radial-gradient(70% 60% at 4% 108%, rgba(255, 90, 42, .12), transparent 68%),
    repeating-linear-gradient(135deg, rgba(31, 91, 78, .22) 0 1px, transparent 1px 13px);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
}

.page-about .about-hero__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(32px, 7.2vw, 76px);
  line-height: 1.14;
  letter-spacing: -.01em;
  margin: 14px 0 20px;
  max-width: 16ch;
  color: var(--text);
}

.page-about .about-hero__lede {
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.9;
  color: var(--cyan-soft);
}

/* 数字统计带 */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(28px, 5vw, 46px) 0 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (min-width: 760px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-stats__item {
  background: var(--panel);
  padding: clamp(14px, 2.4vw, 22px);
}

.page-about .about-stats dt {
  font-family: var(--font-narrow);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-about .about-stats dd {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(22px, 3.6vw, 34px);
  font-weight: 600;
  line-height: 1;
  color: var(--cyan);
}

/* 通用栏目头 */
.page-about .about-head {
  max-width: 780px;
  margin-bottom: clamp(24px, 4vw, 42px);
}

.page-about .about-head h2 {
  font-family: var(--font-serif);
  font-size: clamp(26px, 4.2vw, 44px);
  line-height: 1.26;
  letter-spacing: -.005em;
  margin: 10px 0 14px;
  color: var(--text);
}

.page-about .about-head .lede {
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.9;
  color: var(--cyan-soft);
}

/* 发展脉络：左轨道 + 正文 */
.page-about .about-track {
  border-bottom: 1px solid var(--line);
}

.page-about .about-years {
  margin-bottom: clamp(24px, 5vw, 36px);
  padding-bottom: clamp(16px, 3vw, 22px);
  border-bottom: 1px solid var(--line);
}

.page-about .about-years__label {
  margin: 0 0 12px;
  font-family: var(--font-narrow);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}

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

.page-about .about-years__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
  transition: color .18s ease, border-color .18s ease;
}

.page-about .about-years__link .mono {
  color: var(--cyan-soft);
}

.page-about .about-years__link:hover,
.page-about .about-years__link:focus-visible {
  color: var(--text);
  border-color: var(--cyan);
}

.page-about .about-phase {
  padding: clamp(22px, 3.6vw, 34px) 0;
  border-top: 1px solid var(--line);
}

.page-about .about-phase:first-of-type {
  border-top: 2px solid var(--flame);
}

.page-about .about-phase__no {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--flame);
}

.page-about .about-phase h3 {
  font-family: var(--font-serif);
  font-size: clamp(19px, 2.6vw, 27px);
  line-height: 1.38;
  margin: 0 0 12px;
  color: var(--text);
}

.page-about .about-phase p {
  margin: 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--about-body);
}

.page-about .about-figure {
  margin: clamp(26px, 4vw, 42px) 0 0;
}

/* 图片容器基础 */
.page-about .media-frame {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-about .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.88) contrast(1.04);
}

.page-about .media-frame__caption {
  display: block;
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  background: var(--panel);
  border-top: 1px solid var(--line);
}

/* 团队 */
.page-about .about-team {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

@media (min-width: 1000px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

.page-about .about-team__media {
  box-shadow: var(--about-shadow);
}

.page-about .about-roles {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-roles__item {
  padding-left: clamp(14px, 2.2vw, 20px);
  padding-bottom: clamp(16px, 2.4vw, 22px);
  margin-bottom: clamp(16px, 2.6vw, 26px);
  border-left: 3px solid var(--cyan);
}

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

.page-about .about-roles__item--alt {
  border-left-color: var(--flame);
}

.page-about .about-roles__item h3 {
  margin: 0 0 8px;
  font-family: var(--font-narrow);
  font-size: 15px;
  letter-spacing: .08em;
  color: var(--cyan-soft);
}

.page-about .about-roles__item--alt h3 {
  color: #ffb79c;
}

.page-about .about-roles__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.88;
  color: var(--about-body);
}

/* 入库流程 */
.page-about .about-flow__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

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

.page-about .about-flow__step {
  background: var(--panel);
  padding: clamp(20px, 3vw, 32px);
  border-top: 3px solid var(--cyan);
}

.page-about .about-flow__step:nth-child(2) {
  border-top-color: var(--flame);
}

.page-about .about-flow__step:nth-child(3) {
  border-top-color: var(--cyan-soft);
}

.page-about .about-flow__no {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-about .about-flow__step h3 {
  margin: 0 0 10px;
  font-family: var(--font-narrow);
  font-size: 17px;
  letter-spacing: .04em;
  color: var(--text);
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.88;
  color: var(--about-body);
}

.page-about .about-flow__note {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding-left: 16px;
  border-left: 3px solid var(--flame);
  font-size: 15px;
  line-height: 1.85;
  color: var(--cyan-soft);
}

.page-about .about-flow__note .mono {
  color: var(--text);
  font-weight: 600;
}

/* 协作网络 */
.page-about .about-partners {
  background: var(--panel);
  border-block: 1px solid var(--line);
}

.page-about .about-partners__inner {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

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

.page-about .about-partners__text h2 {
  font-family: var(--font-serif);
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.28;
  margin: 10px 0 16px;
  color: var(--text);
}

.page-about .about-partners__text p {
  max-width: 66ch;
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--about-body);
}

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

.page-about .about-partners__figs {
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-partners__figs > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  background: var(--panel-2);
  padding: 18px 20px;
}

.page-about .about-partners__figs dt {
  font-family: var(--font-narrow);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-about .about-partners__figs dd {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(20px, 2.8vw, 28px);
  font-weight: 600;
  color: var(--cyan);
  line-height: 1;
}

/* 甘肃 */
.page-about .about-gansu__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

@media (min-width: 960px) {
  .page-about .about-gansu__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: center;
  }
}

.page-about .about-gansu__text h2 {
  font-family: var(--font-serif);
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.28;
  margin: 10px 0 16px;
  color: var(--text);
}

.page-about .about-gansu__text p {
  max-width: 64ch;
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--about-body);
}

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

.page-about .about-gansu__media {
  box-shadow: var(--about-shadow);
}

/* 长期价值 */
.page-about .about-value {
  background: var(--panel);
  border-top: 1px solid var(--line);
}

.page-about .about-value__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(22px, 3vw, 34px);
}

@media (min-width: 900px) {
  .page-about .about-value__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-value__list > li {
  padding-top: 18px;
  border-top: 2px solid var(--line);
}

.page-about .about-value__list > li:nth-child(1) {
  border-top-color: var(--cyan);
}

.page-about .about-value__list > li:nth-child(2) {
  border-top-color: var(--cyan-soft);
}

.page-about .about-value__list > li:nth-child(3) {
  border-top-color: var(--flame);
}

.page-about .about-value__no {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--flame);
}

.page-about .about-value__list h3 {
  font-family: var(--font-serif);
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.4;
  margin: 0 0 10px;
  color: var(--text);
}

.page-about .about-value__list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.88;
  color: var(--about-body);
}

.page-about .about-value__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: clamp(26px, 4vw, 40px) 0 0;
}

.page-about .about-signoff {
  margin: clamp(20px, 3vw, 28px) 0 0;
  max-width: 72ch;
  font-size: 15px;
  line-height: 1.88;
  color: var(--muted);
}

.page-about .about-signoff a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-signoff a:hover,
.page-about .about-signoff a:focus-visible {
  color: var(--cyan-soft);
}

.page-about a:focus-visible,
.page-about button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}