.page-about {
  display: block;
}

/* ---------- 面包屑位置微调 ---------- */
.page-about > .breadcrumb {
  padding-top: 28px;
  padding-bottom: 4px;
}

/* ---------- 悬浮目录 ---------- */
.page-about .toc {
  display: none;
}

@media (min-width: 1180px) {
  .page-about .toc {
    display: block;
    position: fixed;
    top: 172px;
    right: max(20px, calc((100vw - var(--wrap)) / 2 - 170px));
    width: 186px;
    z-index: 5;
    padding: 16px 14px;
    background: var(--ink-700);
    border: 1px solid var(--ink-600);
    border-radius: var(--radius);
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  }
  .page-about .toc__title {
    margin: 0 0 10px;
    font-size: 0.8rem;
    letter-spacing: 0.14em;
    color: var(--cyan);
  }
  .page-about .toc__list {
    list-style: none;
    margin: 0 0 12px;
    padding: 0;
    display: grid;
    gap: 2px;
  }
  .page-about .toc__link {
    display: block;
    padding: 6px 8px;
    font-size: 0.86rem;
    color: var(--mist);
    text-decoration: none;
    border-left: 2px solid transparent;
    transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
  }
  .page-about .toc__link:hover,
  .page-about .toc__link:focus-visible {
    color: var(--paper);
    background: var(--ink-600);
    border-left-color: var(--cyan);
  }
  .page-about .toc__top {
    display: inline-block;
    font-size: 0.8rem;
    color: var(--amber);
    text-decoration: none;
    border-bottom: 1px dashed var(--amber);
  }
}

/* ---------- 章节通用收尾 ---------- */
.page-about .divider {
  margin: 8px 0;
}

.page-about .section {
  padding: 56px 0;
}

.page-about .section__head {
  max-width: 720px;
  margin-bottom: 36px;
}

.page-about .section-title {
  margin: 6px 0 14px;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .eyebrow {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .lede {
  margin: 0 0 10px;
  color: var(--mist);
  font-size: 1.02rem;
  line-height: 1.8;
}

.page-about .media-frame {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--ink-600);
  background: linear-gradient(150deg, var(--ink-700), var(--ink-900));
}

.page-about .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .media-frame--slant .media-frame__img {
  clip-path: polygon(0 var(--slant), 100% 0, 100% 100%, 0 calc(100% - var(--slant)));
}

.page-about .media-frame__inner {
  position: absolute;
  left: 14px;
  bottom: 12px;
  padding: 5px 12px;
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--amber-soft);
  background: rgba(6, 10, 20, 0.78);
  border: 1px dashed var(--amber);
  border-radius: 4px;
}

/* ================= 开篇 ================= */
.page-about .about-hero {
  padding-top: 36px;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 40px;
}

.page-about .about-hero h1 {
  margin: 12px 0 18px;
  font-size: clamp(2rem, 5.4vw, 3.6rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .about-hero__note {
  position: relative;
  margin: 0 0 26px;
  padding: 14px 18px;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--mist);
  background: var(--ink-700);
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero__aside {
  display: grid;
  gap: 22px;
}

.page-about .about-hero__mark {
  margin: 0;
  display: flex;
  align-items: flex-end;
  gap: 16px;
  padding: 18px 20px 20px;
  background: linear-gradient(115deg, rgba(63, 224, 208, 0.14), rgba(255, 138, 61, 0.12) 62%, transparent);
  border-top: 1px solid var(--ink-600);
  border-bottom: 1px solid var(--ink-600);
}

.page-about .about-hero__num {
  font-size: clamp(3.6rem, 12vw, 6.4rem);
  font-weight: 800;
  line-height: 0.85;
  letter-spacing: -0.05em;
  color: var(--cyan);
}

.page-about .about-hero__unit {
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--mist);
  letter-spacing: 0.02em;
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.22fr 0.78fr;
    align-items: start;
    gap: 56px;
  }
  .page-about .about-hero__aside {
    margin-top: 34px;
  }
}

/* ================= 时间轴 ================= */
.page-about .timeline-about {
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
  position: relative;
}

.page-about .timeline-about::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 0;
  border-left: 1px dashed var(--ink-600);
}

.page-about .tl-item {
  position: relative;
  margin-bottom: 14px;
}

.page-about .tl-item:last-child {
  margin-bottom: 0;
}

.page-about .tl-node {
  position: absolute;
  left: -26px;
  top: 17px;
  width: 11px;
  height: 11px;
  border-radius: 1px;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(63, 224, 208, 0.16);
}

.page-about .tl-item--legacy .tl-node {
  background: var(--amber-soft);
  box-shadow: 0 0 0 4px rgba(255, 196, 138, 0.14);
}

.page-about .tl-item--live .tl-node {
  background: var(--ok);
  box-shadow: 0 0 0 4px rgba(78, 216, 165, 0.18);
}

.page-about .tl-details {
  background: var(--ink-700);
  border: 1px solid var(--ink-600);
  border-radius: var(--radius);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .tl-details:hover {
  border-color: var(--cyan);
  transform: translateY(-3px);
}

.page-about .tl-item--legacy .tl-details {
  border-style: dashed;
  background: linear-gradient(180deg, var(--ink-700), rgba(27, 42, 74, 0.85));
}

.page-about .tl-summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas:
    "time time hint"
    "title title title";
  align-items: center;
  gap: 4px 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-about .tl-summary::-webkit-details-marker {
  display: none;
}

.page-about .tl-summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-about .tl-time {
  grid-area: time;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-about .tl-title {
  grid-area: title;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--paper);
}

.page-about .tl-hint {
  grid-area: hint;
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--mist);
  border-bottom: 1px solid var(--ink-600);
}

.page-about .tl-details[open] .tl-hint {
  color: var(--cyan);
}

.page-about .tl-text {
  margin: 0;
  padding: 0 18px 18px;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--mist);
}

@media (min-width: 760px) {
  .page-about .tl-summary {
    grid-template-columns: 200px 1fr auto;
    grid-template-areas: "time title hint";
  }
}

/* ================= 对照档案方法 ================= */
.page-about .archive-split {
  align-items: start;
  gap: 40px;
}

.page-about .archive-copy p {
  margin: 0 0 16px;
  color: var(--mist);
  line-height: 1.85;
  font-size: 0.99rem;
}

.page-about .archive-copy .section-title {
  margin-top: 6px;
}

.page-about .archive-steps {
  list-style: none;
  margin: 26px 0 20px;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .archive-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  padding: 14px 16px;
  background: var(--ink-700);
  border-left: 3px solid var(--ink-600);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .archive-step:hover {
  border-left-color: var(--cyan);
  background: var(--ink-600);
}

.page-about .archive-step__idx {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

.page-about .archive-step__text {
  color: var(--paper);
  font-size: 0.95rem;
  line-height: 1.75;
}

.page-about .archive-follow {
  margin: 0;
  padding-left: 16px;
  border-left: 1px dashed var(--amber);
  color: var(--amber-soft) !important;
  font-size: 0.92rem;
}

.page-about .archive-figure {
  margin: 0;
}

.page-about .archive-figure .media-frame__img {
  clip-path: polygon(0 0, 100% var(--slant), 100% 100%, 0 100%);
}

@media (min-width: 900px) {
  .page-about .archive-split {
    grid-template-columns: 1.25fr 0.85fr;
    gap: 56px;
  }
  .page-about .archive-figure {
    position: sticky;
    top: 120px;
    margin-top: 48px;
  }
}

/* ================= 资料库六宫格 ================= */
.page-about .lib-grid {
  display: grid;
  gap: 14px;
}

.page-about .lib-cell {
  position: relative;
  padding: 20px 20px 18px;
  background: var(--ink-700);
  border: 1px solid var(--ink-600);
  border-radius: var(--radius);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .lib-cell:hover,
.page-about .lib-cell:focus-within {
  border-color: var(--cyan);
  background: linear-gradient(160deg, var(--ink-600), var(--ink-700));
  transform: translateY(-4px);
}

.page-about .lib-cell__idx {
  display: block;
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  color: var(--cyan);
  margin-bottom: 10px;
}

.page-about .lib-cell__name {
  margin: 0 0 8px;
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--paper);
}

.page-about .lib-cell__desc {
  margin: 0 0 14px;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .lib-cell__meta {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--ink-600);
  font-size: 0.84rem;
  color: var(--mist);
}

.page-about .lib-cell__meta .mono {
  font-size: 1.16rem;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: 0.02em;
}

.page-about .lib-foot {
  margin: 26px 0 0;
  padding: 16px 20px;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--mist);
  background: var(--ink-700);
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-about .lib-foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 224, 208, 0.4);
}

.page-about .lib-foot a:hover {
  border-bottom-color: var(--cyan);
}

@media (min-width: 640px) {
  .page-about .lib-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

@media (min-width: 1000px) {
  .page-about .lib-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .lib-cell:nth-child(2) {
    transform: translateY(-10px);
  }
  .page-about .lib-cell:nth-child(2):hover {
    transform: translateY(-14px);
  }
  .page-about .lib-cell:nth-child(5) {
    transform: translateY(-6px);
  }
  .page-about .lib-cell:nth-child(5):hover {
    transform: translateY(-10px);
  }
}

/* ================= 团队 ================= */
.page-about .teams-figure {
  margin: 0 0 26px;
}

.page-about .teams-grid {
  display: grid;
  gap: 14px;
}

.page-about .team-col {
  position: relative;
  padding: 22px 20px;
  background: var(--ink-700);
  background-image: repeating-linear-gradient(
    -45deg,
    rgba(63, 224, 208, 0.06) 0 2px,
    transparent 2px 9px
  );
  border: 1px solid var(--ink-600);
  border-top: 3px solid var(--cyan);
  border-radius: 0 0 var(--radius) var(--radius);
  transition: border-top-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .team-col:nth-child(2) {
  border-top-color: var(--cyan-soft);
}

.page-about .team-col:nth-child(3) {
  border-top-color: var(--amber);
  background-image: repeating-linear-gradient(
    -45deg,
    rgba(255, 138, 61, 0.07) 0 2px,
    transparent 2px 9px
  );
}

.page-about .team-col:nth-child(4) {
  border-top-color: var(--ok);
  background-image: repeating-linear-gradient(
    -45deg,
    rgba(78, 216, 165, 0.07) 0 2px,
    transparent 2px 9px
  );
}

.page-about .team-col:hover {
  transform: translateY(-4px);
}

.page-about .team-col__role {
  margin: 0 0 10px;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-about .team-col__title {
  margin: 0 0 10px;
  font-size: 1.04rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .team-col__text {
  margin: 0;
  font-size: 0.91rem;
  line-height: 1.78;
  color: var(--mist);
}

@media (min-width: 700px) {
  .page-about .teams-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

@media (min-width: 1060px) {
  .page-about .teams-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ================= 协作与合规 ================= */
.page-about .partners-grid {
  gap: 16px;
}

.page-about .partner-card {
  background: var(--ink-700);
}

.page-about .partner-card .panel__title {
  font-size: 1.06rem;
  color: var(--paper);
}

.page-about .partner-card .panel__body p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.82;
  color: var(--mist);
}

.page-about .partner-card .panel__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 224, 208, 0.4);
}

.page-about .partner-card .panel__body a:hover {
  border-bottom-color: var(--cyan);
}

.page-about .partners-foot {
  margin: 26px 0 0;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .partners-foot a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px dashed rgba(255, 138, 61, 0.55);
}

.page-about .partners-foot a:hover {
  border-bottom-style: solid;
  border-bottom-color: var(--amber);
}

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

/* ---------- 焦点反馈 ---------- */
.page-about a:focus-visible,
.page-about summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl-details,
  .page-about .lib-cell,
  .page-about .team-col,
  .page-about .archive-step {
    transition: none;
  }
  .page-about .tl-details:hover,
  .page-about .lib-cell:hover,
  .page-about .team-col:hover {
    transform: none;
  }
}
</｜｜DSML｜｜ parameter>
</｜｜DSML｜｜ invoke>
</｜｜DSML｜｜ calls>