.page-about {
  --about-grid: rgba(30, 74, 64, 0.45);
  --about-glow: 0 0 18px rgba(53, 242, 206, 0.22);
  background-color: var(--ink);
  color: var(--text);
}

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

/* ---------- 首屏框景 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 36px) 0 clamp(30px, 4.5vw, 56px);
  border-bottom: 1px solid var(--line);
  background-image:
    radial-gradient(circle at 82% 8%, rgba(53, 242, 206, 0.12), transparent 58%),
    linear-gradient(to right, var(--about-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--about-grid) 1px, transparent 1px);
  background-size: 100% 100%, 64px 64px, 64px 64px;
  background-position: center, center top, center top;
}

.page-about .about-hero .crumbs {
  margin-bottom: clamp(18px, 3vw, 30px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .about-hero .crumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}

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

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: end;
}

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

.page-about .about-hero__text h1 {
  margin: 0;
  font-size: clamp(32px, 7vw, 56px);
  line-height: 1.06;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
}

.page-about .about-hero__text h1::after {
  content: "";
  display: block;
  width: 72px;
  height: 3px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--cyan), rgba(53, 242, 206, 0));
  box-shadow: var(--about-glow);
}

.page-about .about-hero__dek {
  margin: 20px 0 0;
  max-width: 40em;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__media {
  border: 1px solid var(--line);
  background: var(--panel-deep);
  box-shadow: inset 0 0 0 1px rgba(53, 242, 206, 0.06);
}

.page-about .about-hero__media img {
  width: 100%;
}

.page-about .about-hero__media .media-frame__caption {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 关键数字 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  background-color: var(--line);
  border: 1px solid var(--line);
}

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

.page-about .about-stats__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .about-stats__value {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(24px, 4.4vw, 36px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--cyan);
}

/* ---------- 目录与正文骨架 ---------- */
.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 52px);
  padding-top: clamp(30px, 4.5vw, 56px);
  padding-bottom: clamp(40px, 5vw, 72px);
}

.page-about .about-toc {
  align-self: start;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-toc .toc__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .about-toc .toc__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-toc .toc__link {
  display: flex;
  gap: 8px;
  align-items: baseline;
  padding: 6px 0;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}

.page-about .about-toc .toc__link span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--line);
}

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

.page-about .about-toc .toc__link[aria-current="true"] {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-about .about-toc .toc__link[aria-current="true"] span {
  color: var(--cyan);
}

/* ---------- 章节 ---------- */
.page-about .about-chapter {
  padding: clamp(26px, 3.6vw, 40px) 0;
  border-top: 1px solid var(--line);
}

.page-about .about-chapter:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .about-chapter__index {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-about .about-chapter__title {
  margin: 0 0 18px;
  font-size: clamp(22px, 3.6vw, 32px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--text);
}

.page-about .prose p {
  margin: 0 0 16px;
  max-width: 40em;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text);
}

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

.page-about .prose .lede {
  font-size: 17px;
  line-height: 1.8;
  color: var(--cyan-soft);
}

/* ---------- 两类读者 ---------- */
.page-about .about-audience {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: 26px;
  background-color: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-audience__item {
  padding: 18px 18px 20px;
  background-color: var(--panel-deep);
  transition: background-color 180ms ease;
}

.page-about .about-audience__item:hover {
  background-color: var(--panel);
}

.page-about .about-audience__item h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--cyan);
}

.page-about .about-audience__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 时间线 ---------- */
.page-about .timeline {
  position: relative;
  margin: 26px 0 0;
  padding: 0 0 0 30px;
  list-style: none;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 12px;
  bottom: 6px;
  width: 1px;
  background-image: linear-gradient(to bottom, var(--cyan), rgba(30, 74, 64, 0.15));
}

.page-about .timeline__item {
  position: relative;
  padding-bottom: 26px;
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 10px;
  width: 9px;
  height: 9px;
  background-color: var(--ink);
  border: 1px solid var(--cyan);
  transform: rotate(45deg);
  transition: background-color 180ms ease, box-shadow 180ms ease;
}

.page-about .timeline__item:hover::before {
  background-color: var(--cyan);
  box-shadow: var(--about-glow);
}

.page-about .timeline__year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(26px, 4.2vw, 38px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--cyan-soft);
  transition: color 180ms ease, text-shadow 180ms ease;
}

.page-about .timeline__item:hover .timeline__year {
  color: var(--cyan);
  text-shadow: var(--about-glow);
}

.page-about .timeline__title {
  margin: 8px 0 6px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-about .timeline__text {
  margin: 0;
  max-width: 38em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .timeline__brief {
  opacity: 0.62;
  transition: opacity 180ms ease, color 180ms ease;
}

.page-about .timeline__item:hover .timeline__brief,
.page-about .timeline__item:focus-within .timeline__brief {
  opacity: 1;
  color: var(--text);
}

/* ---------- 能力清单 ---------- */
.page-about .matrix {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .matrix__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 15px 12px;
  border-bottom: 1px solid var(--line);
  box-shadow: inset 2px 0 0 transparent;
  transition: background-color 180ms ease, box-shadow 180ms ease;
}

.page-about .matrix__row:hover {
  background-color: var(--panel);
  box-shadow: inset 2px 0 0 var(--cyan);
}

.page-about .matrix__name {
  margin: 0;
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-about .matrix__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .matrix__metric {
  margin: 0;
}

.page-about .matrix__row:hover .matrix__metric .tag {
  color: var(--ink);
  background-color: var(--cyan);
  border-color: var(--cyan);
}

.page-about .about-figure {
  margin: 26px 0 0;
  border: 1px solid var(--line);
  background-color: var(--panel-deep);
}

.page-about .about-figure img {
  width: 100%;
}

.page-about .about-figure .media-frame__caption {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 岗位 ---------- */
.page-about .roles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  background-color: var(--line);
  border: 1px solid var(--line);
}

.page-about .role {
  padding: 18px 18px 20px;
  background-color: var(--panel-deep);
  transition: background-color 180ms ease;
}

.page-about .role:hover {
  background-color: var(--panel);
}

.page-about .role__tag {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-about .role__title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-about .role__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 流程 SVG ---------- */
.page-about .flow {
  margin: 26px 0 0;
  padding: 12px 8px 4px;
  border: 1px solid var(--line);
  background-color: var(--panel-deep);
  overflow: hidden;
}

.page-about .flow svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .flow-box {
  fill: var(--ink);
  stroke: var(--line);
  stroke-width: 1;
}

.page-about .flow-box--accent {
  stroke: var(--cyan);
}

.page-about .flow-link {
  fill: none;
  stroke: var(--line);
  stroke-width: 1.2;
  stroke-dasharray: 4 4;
}

.page-about .flow-arrow {
  fill: var(--cyan);
}

.page-about .flow-label {
  fill: var(--text);
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 700;
  text-anchor: middle;
}

.page-about .flow-sub {
  fill: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1px;
  text-anchor: middle;
}

.page-about .flow-foot {
  fill: var(--muted);
  font-family: var(--font-ui);
  font-size: 12px;
}

/* ---------- 本地服务 ---------- */
.page-about .about-local {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  align-items: start;
}

.page-about .about-local__media {
  margin: 0;
  border: 1px solid var(--line);
  background-color: var(--panel-deep);
}

.page-about .about-local__media img {
  width: 100%;
}

.page-about .about-local__media .media-frame__caption {
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-local__text p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
}

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

.page-about .about-local__facts li {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 10px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-local__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  padding-top: 3px;
}

.page-about .about-local__val {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-local__link {
  margin: 0;
}

/* ---------- 荣誉 ---------- */
.page-about .honors {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 24px;
}

.page-about .honor {
  position: relative;
  overflow: hidden;
  padding: 20px 20px 22px;
  border: 1px solid var(--line);
  background-image: linear-gradient(150deg, var(--panel), var(--panel-deep));
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.page-about .honor:hover {
  border-color: var(--cyan);
  box-shadow: var(--about-glow);
}

.page-about .honor__year {
  position: absolute;
  top: 6px;
  right: 12px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(40px, 8vw, 58px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  color: rgba(53, 242, 206, 0.14);
  pointer-events: none;
}

.page-about .honor__kicker {
  margin: 0 0 10px;
}

.page-about .honor__title {
  position: relative;
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  max-width: 16em;
}

.page-about .honor__text {
  position: relative;
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 结尾 ---------- */
.page-about .about-outro {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  justify-content: space-between;
  margin-top: clamp(30px, 4vw, 48px);
  padding: clamp(22px, 3.4vw, 34px);
  border: 1px solid var(--line);
  background-color: var(--panel-deep);
  background-image:
    radial-gradient(circle at 92% 10%, rgba(245, 184, 65, 0.12), transparent 55%),
    linear-gradient(to right, var(--about-grid) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px;
}

.page-about .about-outro__text {
  flex: 1 1 320px;
}

.page-about .about-outro__text h2 {
  margin: 0 0 10px;
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-about .about-outro__text p {
  margin: 0;
  max-width: 42em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-about .about-body {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 60px);
  }

  .page-about .about-toc {
    position: sticky;
    top: 96px;
    border-bottom: 0;
  }

  .page-about .about-toc .toc__list {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }

  .page-about .matrix__row {
    grid-template-columns: 140px minmax(0, 1fr) 150px;
    gap: 18px;
    align-items: center;
    padding: 16px 14px;
  }

  .page-about .matrix__metric {
    text-align: right;
  }

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

  .page-about .about-chapter {
    padding: clamp(30px, 3.4vw, 44px) 0;
  }
}
<<<END>>>