.page-about {
  --about-rail: 236px;
  --about-gap: clamp(32px, 4vw, 72px);
  --about-pad: clamp(22px, 3vw, 40px);
  background-color: var(--ink);
  color: var(--paper);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding-top: clamp(18px, 2.6vw, 32px);
  padding-bottom: clamp(10px, 1.6vw, 18px);
}

.page-about .about-crumbs a {
  color: var(--muted);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-bottom: clamp(36px, 6vw, 76px);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero__grid {
  display: grid;
  gap: var(--sp-m);
  align-items: end;
}

.page-about .about-hero__lede {
  display: grid;
  gap: clamp(14px, 2vw, 22px);
}

.page-about .about-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 250;
  font-size: clamp(34px, 6.4vw, 84px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.page-about .about-hero h1 em {
  font-style: normal;
  color: var(--cyan);
}

.page-about .about-hero__text {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.85;
  color: rgba(242, 245, 240, 0.82);
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 6px 0 0;
  padding: 16px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(242, 245, 240, 0.86);
}

.page-about .about-hero__meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

.page-about .about-meta__k {
  color: var(--muted);
}

.page-about .about-meta__k::after {
  content: "／";
  margin-left: 6px;
  color: var(--line);
}

.page-about .about-meta__v {
  color: var(--cyan);
  font-size: 15px;
}

.page-about .about-hero__fig {
  margin: 0;
  position: relative;
  border: 1px solid var(--line);
  background-color: var(--ink-2);
}

.page-about .about-hero__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

.page-about .about-hero__fig .figure-caption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 主体骨架 ---------- */
.page-about .about-body {
  display: grid;
  gap: var(--about-gap);
  padding-top: clamp(30px, 4vw, 56px);
  padding-bottom: clamp(56px, 8vw, 120px);
}

.page-about .about-flow {
  display: grid;
  gap: clamp(56px, 8vw, 118px);
  min-width: 0;
}

/* ---------- 左侧索引 ---------- */
.page-about .about-rail {
  min-width: 0;
}

.page-about .about-rail__title {
  margin: 0 0 12px;
  color: var(--muted);
}

.page-about .about-rail__list {
  display: flex;
  gap: 0;
  overflow-x: auto;
  margin: 0;
  padding: 0 0 12px;
  list-style: none;
  scrollbar-width: thin;
}

.page-about .about-rail__item a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 16px 8px 0;
  white-space: nowrap;
  text-decoration: none;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 13px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-rail__idx {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--line);
  transition: color var(--dur) var(--ease);
}

.page-about .about-rail__item a:hover,
.page-about .about-rail__item a:focus-visible {
  color: var(--paper);
  border-top-color: var(--cyan);
}

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

/* ---------- 章节通用 ---------- */
.page-about .about-sec {
  min-width: 0;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-about .section-head {
  max-width: 62ch;
  margin-bottom: clamp(26px, 3.4vw, 48px);
}

.page-about .section-note {
  max-width: 54ch;
}

/* ---------- 团队关系图 ---------- */
.page-about .team-map {
  position: relative;
  display: grid;
  gap: 1px;
  background-color: var(--line);
  border: 1px solid var(--line);
}

.page-about .team-node {
  position: relative;
  padding: 64px var(--about-pad) var(--about-pad);
  background-color: var(--ink-2);
  transition: background-color var(--dur) var(--ease);
}

.page-about .team-node__pin {
  position: absolute;
  top: 40px;
  left: var(--about-pad);
  width: 12px;
  height: 12px;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  background-color: var(--ink);
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .team-node__role {
  margin: 0 0 10px;
  color: var(--cyan);
}

.page-about .team-node__name {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(18px, 1.5vw, 22px);
  line-height: 1.35;
}

.page-about .team-node__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(242, 245, 240, 0.76);
}

.page-about .team-node:hover {
  background-color: #14291E;
}

.page-about .team-node:hover .team-node__pin {
  background-color: var(--orange);
  border-color: var(--orange);
  box-shadow: 0 0 0 6px rgba(255, 138, 61, 0.12);
}

/* ---------- 通用图注容器 ---------- */
.page-about .about-figure {
  margin: clamp(28px, 4vw, 52px) 0 0;
  border: 1px solid var(--line);
  background-color: var(--ink-2);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.8) contrast(1.05);
}

.page-about .about-figure .figure-caption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .about-figure--team img {
  aspect-ratio: 4 / 3;
}

.page-about .about-figure--timeline img {
  aspect-ratio: 2 / 1;
}

/* ---------- 校对流程 ---------- */
.page-about .check-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-about .check-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 16px;
  padding: clamp(20px, 2.6vw, 32px) 0;
  border-top: 1px solid var(--line);
}

.page-about .check-step:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .check-step__num {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  padding-top: 4px;
}

.page-about .check-step__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(17px, 1.4vw, 21px);
  line-height: 1.35;
}

.page-about .check-step__body p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(242, 245, 240, 0.76);
}

/* ---------- 版本时间线 ---------- */
.page-about .timeline {
  display: flex;
  gap: 0;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
}

.page-about .tl-node {
  position: relative;
  flex: 0 0 auto;
  width: min(258px, 74vw);
  padding: 26px 26px 0 0;
  border-top: 1px solid var(--line);
  outline-offset: 4px;
}

.page-about .tl-node__dot {
  position: absolute;
  top: -5px;
  left: 0;
  width: 9px;
  height: 9px;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  background-color: var(--ink);
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .tl-node__ver {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 20px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-about .tl-node__era {
  margin: 4px 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .tl-node__name {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.4;
}

.page-about .tl-node__detail {
  margin: 0;
  max-width: 40ch;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 245, 240, 0.72);
  transition: color var(--dur) var(--ease);
}

.page-about .tl-node:hover .tl-node__dot,
.page-about .tl-node:focus-visible .tl-node__dot {
  background-color: var(--orange);
  border-color: var(--orange);
  transform: scale(1.35);
}

.page-about .tl-node:hover .tl-node__detail,
.page-about .tl-node:focus-visible .tl-node__detail {
  color: var(--paper);
}

/* 桌面端把节点的补充说明做成悬停/聚焦展开 */
@media (min-width: 1080px) {
  .page-about .tl-node__detail {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height var(--dur) var(--ease), opacity var(--dur) var(--ease), color var(--dur) var(--ease);
  }

  .page-about .tl-node:hover .tl-node__detail,
  .page-about .tl-node:focus-visible .tl-node__detail,
  .page-about .tl-node:focus-within .tl-node__detail {
    max-height: 220px;
    opacity: 1;
  }
}

/* ---------- 三条线 ---------- */
.page-about .promise-list {
  display: grid;
}

.page-about .promise-item {
  display: grid;
  gap: 8px;
  padding: clamp(20px, 2.8vw, 36px) 0;
  border-top: 1px solid var(--line);
}

.page-about .promise-item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .promise-item__idx {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-about .promise-item__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(19px, 1.7vw, 26px);
  line-height: 1.3;
}

.page-about .promise-item__text {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(242, 245, 240, 0.76);
}

/* ---------- 内容来源 ---------- */
.page-about .source-grid {
  display: grid;
  gap: 1px;
  background-color: var(--line);
  border: 1px solid var(--line);
}

.page-about .source-block {
  padding: var(--about-pad);
  background-color: var(--ink-2);
}

.page-about .source-block__name {
  margin: 0 0 12px;
  padding-left: 14px;
  position: relative;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(17px, 1.4vw, 20px);
  line-height: 1.4;
}

.page-about .source-block__name::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35em;
  width: 2px;
  height: 1.05em;
  background-color: var(--cyan);
}

.page-about .source-block__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(242, 245, 240, 0.76);
}

/* ---------- 收尾入口 ---------- */
.page-about .about-cta {
  border-top: 1px solid var(--line);
  padding-top: clamp(28px, 4vw, 52px);
}

.page-about .about-cta .index-label {
  margin: 0 0 14px;
  color: var(--muted);
}

.page-about .about-cta__title {
  margin: 0 0 clamp(24px, 3vw, 40px);
  max-width: 24ch;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(24px, 3.4vw, 44px);
  line-height: 1.12;
  letter-spacing: -0.01em;
}

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

.page-about .about-cta__link {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 4px 12px;
  padding: 20px var(--about-pad);
  background-color: var(--ink-2);
  text-decoration: none;
  color: var(--paper);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about .about-cta__link-idx {
  grid-row: span 2;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}

.page-about .about-cta__link-label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
}

.page-about .about-cta__link-note {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(242, 245, 240, 0.66);
}

.page-about .about-cta__link:hover,
.page-about .about-cta__link:focus-visible {
  background-color: #14291E;
}

.page-about .about-cta__link:hover .about-cta__link-idx,
.page-about .about-cta__link:focus-visible .about-cta__link-idx {
  color: var(--orange);
}

/* ---------- 平板 ---------- */
@media (min-width: 760px) {
  .page-about .team-map {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .team-node::after {
    content: "";
    position: absolute;
    top: 45px;
    left: 0;
    right: 0;
    height: 1px;
    background-color: var(--line);
  }

  .page-about .source-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .source-block--wide {
    grid-column: 1 / -1;
  }

  .page-about .about-figure--team img {
    aspect-ratio: 16 / 9;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1080px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: clamp(32px, 4vw, 72px);
  }

  .page-about .about-body {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h) + 32px);
    align-self: start;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-rail__item a {
    width: 100%;
    padding: 11px 0;
    white-space: normal;
    line-height: 1.5;
  }

  .page-about .check-step {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 4px 24px;
  }

  .page-about .promise-item {
    grid-template-columns: 64px minmax(0, 0.92fr) minmax(0, 1.5fr);
    align-items: start;
    gap: 4px 24px;
  }

  .page-about .promise-item__idx {
    padding-top: 6px;
  }

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

  .page-about .about-cta__link {
    padding: 26px var(--about-pad);
  }
}

@media (min-width: 1440px) {
  .page-about .about-hero h1 {
    max-width: 15ch;
  }
}
</｜｜DSML｜｜ parameter>
</｜｜DSML｜｜ invoke>
</｜｜DSML｜｜ calls>