.page-about {
  --ab-gap: clamp(20px, 3vw, 34px);
  --ab-radius: var(--radius-lg);
  background: var(--paper);
  color: var(--ink);
}

.page-about .mono {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(18px, 3.5vw, 32px) 0 clamp(30px, 5vw, 56px);
  background:
    linear-gradient(158deg, var(--paper-light) 0%, var(--paper) 52%, var(--paper-deep) 100%);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  right: -10%;
  bottom: -42%;
  width: min(620px, 78%);
  aspect-ratio: 1 / 1;
  background: var(--mist);
  opacity: 0.17;
  border-radius: 46% 0 0 0;
  clip-path: polygon(0 100%, 100% 6%, 100% 100%);
  pointer-events: none;
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--copper), var(--tag) 46%, transparent);
  opacity: 0.55;
}

.page-about .ab-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  align-items: end;
}

.page-about .ab-hero-main h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 6vw, 3.6rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--sea);
  margin: 10px 0 16px;
  max-width: 18ch;
}

.page-about .ab-hero-main .lede {
  max-width: 60ch;
  color: var(--ink);
  opacity: 0.9;
}

.page-about .ab-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-about .ab-hero-facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--shadow);
  border: 1px solid var(--shadow);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .ab-fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: var(--paper-light);
}

.page-about .ab-fact-v {
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--sea);
}

.page-about .ab-fact-k {
  font-size: 13px;
  line-height: 1.6;
  color: var(--tea);
}

/* ---------- 主体骨架 ---------- */
.page-about .ab-body {
  display: grid;
  gap: var(--ab-gap);
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-about .ab-rail-title {
  font-size: 12px;
  color: var(--copper);
  margin: 0 0 8px;
}

.page-about .ab-rail .index-rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
}

.page-about .ab-rail .rail-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--pill);
  border: 1px solid var(--shadow);
  background: var(--paper-light);
  color: var(--sea);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: background 200ms ease, border-color 200ms ease, transform 200ms ease;
}

.page-about .ab-rail .rail-link span {
  font-size: 11px;
  color: var(--copper);
}

.page-about .ab-rail .rail-link:hover,
.page-about .ab-rail .rail-link:focus-visible {
  background: var(--mist);
  border-color: var(--mist);
  color: var(--paper-light);
  transform: translateY(-1px);
}

.page-about .ab-main {
  min-width: 0;
}

/* ---------- 章节 ---------- */
.page-about .ab-sec {
  padding: clamp(26px, 4vw, 44px) 0;
  border-top: 1px solid var(--shadow);
}

.page-about .ab-sec:first-child {
  border-top: 0;
  padding-top: 8px;
}

.page-about .ab-sec-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px 16px;
  align-items: start;
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-about .ab-sec-head .section-num {
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--copper);
  line-height: 1;
  padding-top: 6px;
}

.page-about .ab-sec-head .section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.35rem, 3vw, 2rem);
  line-height: 1.35;
  color: var(--sea);
  margin: 0 0 10px;
}

.page-about .ab-sec-lede {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink);
  opacity: 0.88;
}

.page-about .figure {
  margin: 0 0 clamp(20px, 3vw, 30px);
}

.page-about .figure-frame {
  border-radius: var(--ab-radius);
  overflow: hidden;
  background: var(--paper-deep);
  border: 1px solid var(--shadow);
}

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

.page-about .figure-caption {
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--tea);
}

/* ---------- 筛选 ---------- */
.page-about .ab-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.page-about .ab-filter .filter-btn {
  padding: 7px 15px;
  border-radius: var(--pill);
  border: 1px solid var(--shadow);
  background: var(--paper-light);
  color: var(--sea);
  font-size: 14px;
  cursor: pointer;
  transition: background 200ms ease, color 200ms ease, border-color 200ms ease;
}

.page-about .ab-filter .filter-btn[aria-pressed="true"] {
  background: var(--sea);
  border-color: var(--sea);
  color: var(--paper-light);
}

.page-about .ab-filter .filter-count {
  font-size: 12px;
  color: var(--copper);
}

/* ---------- 团队表 ---------- */
.page-about .ab-team-rows {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .ab-team-row {
  display: grid;
  gap: 10px;
  padding: 18px 18px 20px;
  border-radius: var(--radius-md);
  background: var(--paper-light);
  border: 1px solid var(--shadow);
  border-left: 4px solid var(--mist);
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.page-about .ab-team-row:hover,
.page-about .ab-team-row:focus-within {
  transform: translateY(-2px);
  border-left-color: var(--copper);
  box-shadow: 0 10px 26px rgba(23, 58, 74, 0.08);
}

.page-about .ab-team-row[hidden] {
  display: none;
}

.page-about .ab-code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: var(--sea);
  color: var(--paper-light);
  font-size: 13px;
}

.page-about .ab-team-name {
  font-family: var(--font-display);
  font-size: 1.14rem;
  font-weight: 600;
  color: var(--sea);
  margin: 0 0 8px;
}

.page-about .ab-team-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
}

.page-about .ab-team-desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink);
  max-width: 62ch;
}

/* ---------- 时间线 ---------- */
.page-about .ab-timeline-wrap {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

.page-about .ab-tl {
  list-style: none;
  margin: 0;
  padding: 0 0 0 22px;
  position: relative;
}

.page-about .ab-tl::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--mist), var(--shadow) 70%, transparent);
}

.page-about .ab-tl-item {
  position: relative;
  padding: 0 0 22px;
}

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

.page-about .ab-tl-dot {
  position: absolute;
  left: -22px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--paper-light);
  border: 2px solid var(--copper);
}

.page-about .ab-tl-item--now .ab-tl-dot {
  background: var(--copper);
  border-color: var(--copper);
  box-shadow: 0 0 0 4px rgba(180, 90, 42, 0.14);
}

.page-about .ab-tl-year {
  display: block;
  font-size: 13px;
  color: var(--copper);
  margin-bottom: 4px;
}

.page-about .ab-tl-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--sea);
  margin: 0 0 6px;
}

.page-about .ab-tl-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink);
  max-width: 58ch;
}

.page-about .ab-tl-more {
  display: grid;
  grid-template-rows: 1fr;
  transition: grid-template-rows 260ms ease;
}

.page-about .ab-tl-inner {
  overflow: hidden;
}

.page-about .ab-tl-inner p {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--tea);
  border-left: 2px solid var(--hill);
  padding-left: 10px;
}

.page-about .ab-tl-inner a {
  color: var(--sea);
  text-decoration: underline;
  text-decoration-color: var(--mist);
  text-underline-offset: 3px;
}

.page-about .ab-tl-figure {
  margin: 0;
}

/* ---------- 区域维护 ---------- */
.page-about .ab-region-grid {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
}

.page-about .ab-region-figure {
  margin: 0;
}

.page-about .ab-region-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--shadow);
  border: 1px solid var(--shadow);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .ab-region-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 14px;
  padding: 14px 16px;
  background: var(--paper-light);
}

.page-about .ab-region-k {
  grid-row: 1 / 3;
  align-self: start;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--copper);
  line-height: 1.2;
  min-width: 2.6em;
}

.page-about .ab-region-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--sea);
}

.page-about .ab-region-p {
  grid-column: 2;
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink);
  opacity: 0.9;
}

.page-about .ab-region-side .notice {
  margin: 0 0 16px;
  font-size: 13.5px;
  line-height: 1.8;
}

/* ---------- 巡检 ---------- */
.page-about .ab-sec--quality {
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-deep) 100%);
  border-radius: var(--ab-radius);
  padding-left: clamp(14px, 3vw, 26px);
  padding-right: clamp(14px, 3vw, 26px);
  border-top: 0;
}

.page-about .ab-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--shadow);
  border: 1px solid var(--shadow);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: clamp(18px, 3vw, 26px);
}

.page-about .ab-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 16px 18px;
  background: var(--paper-light);
}

.page-about .ab-stat-num {
  font-size: clamp(1.4rem, 3.4vw, 1.95rem);
  font-weight: 600;
  color: var(--sea);
  line-height: 1.1;
}

.page-about .ab-stat-label {
  font-size: 13px;
  line-height: 1.65;
  color: var(--tea);
}

.page-about .ab-quality-notes {
  display: grid;
  gap: 12px;
}

.page-about .ab-note-card {
  padding: 16px 18px 18px;
  border-radius: var(--radius-md);
  background: var(--paper-light);
  border: 1px solid var(--shadow);
}

.page-about .ab-note-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--sea);
}

.page-about .ab-note-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink);
}

.page-about .ab-note-card a {
  color: var(--sea);
  text-decoration: underline;
  text-decoration-color: var(--mist);
  text-underline-offset: 3px;
}

/* ---------- 联系 ---------- */
.page-about .ab-sec--contact {
  border-top: 0;
}

.page-about .ab-contact {
  padding: clamp(20px, 3.5vw, 34px);
  border-radius: var(--ab-radius);
  background: var(--sea);
  color: var(--paper-light);
}

.page-about .ab-contact .section-num {
  color: var(--tag);
}

.page-about .ab-contact .section-title {
  color: var(--paper-light);
}

.page-about .ab-contact .ab-sec-lede {
  color: var(--paper);
  opacity: 0.88;
}

.page-about .ab-contact-grid {
  display: grid;
  gap: 14px;
  margin-bottom: 20px;
}

.page-about .ab-contact-item {
  padding: 16px 18px 18px;
  border-radius: var(--radius-md);
  background: rgba(251, 248, 242, 0.08);
  border: 1px solid rgba(127, 169, 164, 0.42);
}

.page-about .ab-contact-k {
  display: block;
  font-size: 12px;
  color: var(--tag);
  margin-bottom: 8px;
}

.page-about .ab-contact-v {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(0.98rem, 2.4vw, 1.12rem);
  color: var(--paper-light);
  text-decoration: none;
  word-break: break-all;
  border-bottom: 1px solid rgba(214, 162, 63, 0.6);
  padding-bottom: 2px;
}

.page-about .ab-contact-v--plain {
  border-bottom: 0;
  font-family: var(--font-body);
}

.page-about .ab-contact-v:hover,
.page-about .ab-contact-v:focus-visible {
  color: var(--tag);
}

.page-about .ab-copy {
  display: inline-block;
  margin-left: 10px;
  padding: 4px 12px;
  border-radius: var(--pill);
  border: 1px solid rgba(127, 169, 164, 0.6);
  background: transparent;
  color: var(--paper-light);
  font-size: 12px;
  cursor: pointer;
  transition: background 200ms ease, color 200ms ease;
}

.page-about .ab-copy:hover,
.page-about .ab-copy:focus-visible {
  background: var(--mist);
  color: var(--sea-deep);
}

.page-about .ab-copy.is-copied {
  background: var(--tag);
  border-color: var(--tag);
  color: var(--sea-deep);
}

.page-about .ab-contact-p {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--paper);
  opacity: 0.85;
  max-width: 44ch;
}

.page-about .ab-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.page-about .ab-links .btn--ghost {
  color: var(--paper-light);
  border-color: rgba(251, 248, 242, 0.45);
}

.page-about .ab-links .btn--ghost:hover,
.page-about .ab-links .btn--ghost:focus-visible {
  background: var(--paper-light);
  color: var(--sea);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .ab-quality-notes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .ab-contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero-inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(260px, 0.85fr);
  }
  .page-about .ab-body {
    grid-template-columns: 176px minmax(0, 1fr);
    align-items: start;
  }
  .page-about .ab-rail {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
  .page-about .ab-rail .index-rail {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
    gap: 6px;
  }
  .page-about .ab-rail .rail-link {
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    font-size: 13.5px;
  }
  .page-about .ab-team-row {
    grid-template-columns: 34px minmax(0, 210px) minmax(0, 1fr);
    align-items: start;
    column-gap: 20px;
    padding: 20px 22px 22px;
  }
  .page-about .ab-timeline-wrap {
    grid-template-columns: minmax(0, 1.25fr) minmax(240px, 0.75fr);
    align-items: start;
  }
  .page-about .ab-tl-figure {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
  .page-about .ab-region-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
  .page-about .ab-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .ab-quality-notes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .ab-contact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) and (hover: hover) {
  .page-about .ab-tl-more {
    grid-template-rows: 0fr;
  }
  .page-about .ab-tl-item:hover .ab-tl-more,
  .page-about .ab-tl-item:focus-within .ab-tl-more {
    grid-template-rows: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-team-row,
  .page-about .ab-rail .rail-link,
  .page-about .ab-copy,
  .page-about .ab-tl-more {
    transition: none;
  }
  .page-about .ab-team-row:hover {
    transform: none;
  }
}
</｜｜DSML｜｜ parameter>
</invoke>
</｜｜DSML｜｜ invoke>
</