.page-about {
  --about-body: #c3ccd1;
  --about-body-dim: #a9b4ba;
  background: var(--ink);
  color: var(--paper);
  padding-bottom: clamp(40px, 7vw, 90px);
}

/* 面包屑 */
.page-about .breadcrumbs {
  padding-top: clamp(16px, 3vw, 26px);
}

.page-about .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-about .breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-about .breadcrumbs li + li::before {
  content: "/";
  color: var(--line);
}

.page-about .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-about .breadcrumbs [aria-current="page"] {
  color: var(--mint);
}

/* 首屏 */
.page-about .about-hero {
  padding: clamp(24px, 4vw, 46px) 0 clamp(30px, 5vw, 58px);
  border-bottom: 2px solid var(--line);
}

.page-about .about-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 clamp(14px, 3vw, 26px);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mint);
}

.page-about .about-hero__eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--orange);
}

.page-about .about-hero__title {
  margin: 0;
  font-size: clamp(34px, 8vw, 104px);
  font-weight: 200;
  line-height: 1;
  letter-spacing: -0.025em;
  transform: skewX(-1.5deg);
  transform-origin: left bottom;
  overflow-wrap: break-word;
}

.page-about .about-hero__title em {
  display: inline-block;
  font-style: normal;
  font-weight: 800;
  color: var(--orange);
  transform: skewX(1.5deg);
}

.page-about .about-hero__lower {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(22px, 4vw, 40px);
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.85;
  color: var(--about-body);
}

.page-about .hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2px;
  margin: 0;
  background: var(--line);
  border: 2px solid var(--line);
}

.page-about .hero-stats__item {
  background: var(--panel);
  padding: 14px 12px 16px;
}

.page-about .hero-stats dt {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  line-height: 1.4;
  color: var(--mist);
}

.page-about .hero-stats dd {
  margin: 8px 0 0;
  font-family: var(--mono);
  font-size: clamp(20px, 3vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--mint);
}

/* 章节骨架 */
.page-about .about-sec {
  border-bottom: 1px solid var(--line);
}

.page-about .about-sec:last-of-type {
  border-bottom: 0;
}

.page-about .s-head {
  display: grid;
  gap: 8px;
  padding: clamp(30px, 5vw, 56px) 0 clamp(16px, 2vw, 24px);
}

.page-about .s-head__no {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-about .s-head__title {
  margin: 0;
  max-width: 24ch;
  font-size: clamp(24px, 3.6vw, 42px);
  font-weight: 300;
  line-height: 1.18;
  letter-spacing: -0.01em;
}

.page-about .s-head__note {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

/* 正文 */
.page-about .about-prose {
  max-width: 62ch;
}

.page-about .about-prose p {
  margin: 0 0 1em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-body);
}

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

.page-about .textlink {
  display: inline-block;
  margin-top: 6px;
  padding-bottom: 2px;
  font-size: 14px;
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 255, 182, 0.4);
}

.page-about .textlink:hover,
.page-about .textlink:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* 图片 */
.page-about .about-figure {
  margin: 0;
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-about .about-figure--wide {
  margin-bottom: clamp(16px, 3vw, 26px);
}

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

.page-about .about-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* 起点章节 */
.page-about .origin-grid {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  align-items: start;
  padding-bottom: clamp(30px, 5vw, 54px);
}

/* 控制台轨道 */
.page-about .console-rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(228px, 82%);
  gap: 14px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  padding: 4px 4px 18px;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-about .console-rail:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 4px;
}

.page-about .console-card {
  position: relative;
  padding: 20px 18px 24px;
  background: var(--panel);
  border: 2px solid var(--line);
  border-top: 3px solid var(--orange);
  scroll-snap-align: start;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-about .console-card__idx {
  display: block;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mint);
}

.page-about .console-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .console-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--about-body-dim);
}

/* 团队 */
.page-about .team-layout {
  display: grid;
  gap: clamp(20px, 3vw, 30px);
  align-items: start;
  padding-bottom: clamp(30px, 5vw, 54px);
}

.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  background: var(--line);
  border: 2px solid var(--line);
}

.page-about .team-card {
  background: var(--panel);
  padding: 18px 16px 20px;
}

.page-about .team-card__num {
  display: block;
  font-family: var(--mono);
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--orange);
}

.page-about .team-card__num small {
  margin-left: 4px;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-about .team-card h3 {
  margin: 12px 0 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper);
}

.page-about .team-card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--about-body-dim);
}

/* 版本时间线 */
.page-about .version-track {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin: 0 0 clamp(16px, 3vw, 24px);
}

.page-about .timeline {
  display: grid;
  gap: 12px;
  margin: 0 0 clamp(30px, 5vw, 54px);
  padding: 0;
  list-style: none;
}

.page-about .timeline__stage {
  background: var(--panel);
  border: 2px solid var(--line);
  border-left: 3px solid var(--orange);
}

.page-about .timeline__stage[open] {
  border-left-color: var(--mint);
  box-shadow: var(--shadow-glow);
}

.page-about .timeline__stage summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .timeline__stage summary:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 2px;
}

.page-about .timeline__stage summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--mono);
  font-size: 18px;
  line-height: 1;
  color: var(--orange);
}

.page-about .timeline__stage[open] summary::after {
  content: "–";
  color: var(--mint);
}

.page-about .timeline__label {
  flex: 1 1 auto;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .timeline__meta {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  white-space: nowrap;
  color: var(--mist);
}

.page-about .timeline__body {
  padding: 14px 16px 18px;
  border-top: 1px solid var(--line);
}

.page-about .timeline__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--about-body);
}

/* 合作生态 */
.page-about .eco-band {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
  margin: clamp(30px, 5vw, 54px) 0;
  padding: clamp(22px, 4vw, 44px);
  border: 2px solid var(--orange);
  background:
    radial-gradient(circle at 100% 0%, rgba(255, 90, 31, 0.18), transparent 62%),
    var(--panel);
  box-shadow: var(--shadow-hard);
}

.page-about .eco-band h2 {
  margin: 10px 0 0;
  max-width: 20ch;
  font-size: clamp(23px, 3.4vw, 38px);
  font-weight: 300;
  line-height: 1.2;
}

.page-about .honor-list {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .honor-list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  background: rgba(11, 13, 15, 0.62);
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
}

.page-about .honor-list li::before {
  content: "★";
  font-size: 12px;
  color: var(--amber);
}

/* 服务承诺 */
.page-about .service-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  background: var(--line);
  border: 2px solid var(--line);
}

.page-about .service-item {
  background: var(--panel);
  padding: 18px 18px 20px;
}

.page-about .service-item h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--paper);
}

.page-about .service-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--about-body-dim);
}

.page-about .about-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 32px);
  padding-bottom: clamp(24px, 4vw, 44px);
}

/* 中等屏 */
@media (min-width: 700px) {
  .page-about .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

/* 桌面端 */
@media (min-width: 900px) {
  .page-about .s-head {
    grid-template-columns: 90px minmax(0, 1fr) 220px;
    align-items: end;
    column-gap: 24px;
  }

  .page-about .s-head__note {
    text-align: right;
  }

  .page-about .about-hero__lower {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .origin-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-about .console-rail {
    grid-auto-flow: row;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    overflow: visible;
    padding: 0;
    margin-bottom: clamp(30px, 4vw, 50px);
  }

  .page-about .team-layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-about .eco-band {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

/* 降低动效偏好 */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero__title,
  .page-about .about-hero__title em {
    transform: none;
  }

  .page-about .console-rail {
    scroll-snap-type: none;
  }
}
<<<END>>>