.page-about {
  --about-gap: 1px;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  padding-top: 26px;
  padding-bottom: 4px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 34px 0 44px;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -30% -15% auto -25%;
  height: 150%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(58% 52% at 80% 16%, rgba(56, 242, 198, 0.16), transparent 72%),
    linear-gradient(122deg, rgba(11, 43, 38, 0) 40%, rgba(18, 63, 54, 0.85) 40.2%, rgba(7, 28, 25, 0.96) 100%);
  clip-path: polygon(0 0, 100% 0, 100% 76%, 0 100%);
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
}

.page-about .about-hero__text h1 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(32px, 7.4vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 14px 0 18px;
  color: var(--paper);
  max-width: 20ch;
}

.page-about .about-hl {
  color: var(--cyan);
  border-bottom: 3px solid var(--orange);
  padding-bottom: 2px;
}

.page-about .about-hero__lede {
  max-width: 52ch;
}

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

.page-about .about-stats {
  list-style: none;
  margin: 30px 0 0;
  padding: var(--about-gap);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--about-gap);
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-stats li {
  background: rgba(18, 63, 54, 0.72);
  padding: 14px 16px 15px;
}

.page-about .stat-num {
  display: block;
  font-family: var(--font-data);
  font-size: 22px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: -0.01em;
}

.page-about .stat-label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-soft);
}

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

/* ---------- 分栏骨架 ---------- */
.page-about .about-layout {
  display: grid;
  gap: 30px;
  padding-bottom: 70px;
}

.page-about .about-rail {
  order: -1;
}

.page-about .about-toc {
  border-left: 1px solid var(--line);
  padding-left: 16px;
}

.page-about .about-toc__title {
  margin: 0 0 10px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cool);
}

.page-about .about-toc .toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
}

.page-about .about-toc .toc-link {
  display: block;
  padding: 6px 12px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-pill);
  font-size: 13px;
  line-height: 1.4;
  color: var(--text-soft);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-about .about-toc .toc-link:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-about .about-toc .toc-link[aria-current="true"] {
  color: var(--ink-deep);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 章节通用 ---------- */
.page-about .about-sec {
  padding: 36px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-sec:first-child {
  border-top: 0;
  padding-top: 6px;
}

.page-about .about-sec--paper {
  background: var(--paper);
  border-radius: var(--radius-l);
  border-top: 0;
  padding: 30px 20px 34px;
  margin-bottom: 8px;
}

.page-about .section-title.about-ink {
  color: var(--graphite);
}

.page-about .section-desc.about-desc-ink {
  color: var(--ink-text-soft);
}

.page-about .eyebrow.about-ink {
  color: #b8531a;
}

/* ---------- 业务由来 ---------- */
.page-about .about-split {
  display: grid;
  gap: 18px;
  margin-top: 22px;
}

.page-about .about-note {
  margin: 0;
  padding: 4px 0 4px 14px;
  border-left: 2px solid var(--cyan);
  font-family: var(--font-data);
  font-size: 12px;
  line-height: 2;
  letter-spacing: 0.08em;
  color: var(--cool);
}

.page-about .about-body p {
  margin: 0 0 14px;
}

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

.page-about .about-points {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-point {
  position: relative;
  padding: 20px 20px 22px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(18, 63, 54, 0.85), rgba(11, 43, 38, 0.6));
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease);
}

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

.page-about .about-point__idx {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .about-point__title {
  margin: 8px 0 8px;
  font-family: var(--font-head);
  font-size: 21px;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-point p {
  margin: 0;
  font-size: 15px;
  color: var(--text-soft);
}

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

.page-about .about-mile {
  position: relative;
  padding: 0 0 26px 26px;
  border-left: 1px solid var(--line-ink);
}

.page-about .about-mile:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .about-mile::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 138, 61, 0.18);
}

.page-about .about-mile__year {
  display: block;
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #1e6b57;
  margin-bottom: 6px;
}

.page-about .about-mile__title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--graphite);
}

.page-about .about-mile__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-text-soft);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  margin-top: 24px;
}

.page-about .about-team__card {
  position: relative;
  padding: 22px 20px 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(18, 63, 54, 0.55);
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease), background 0.28s var(--ease);
}

.page-about .about-team__card:hover,
.page-about .about-team__card:focus-within {
  transform: translateY(-4px);
  border-color: var(--cyan);
  background: rgba(18, 63, 54, 0.9);
}

.page-about .about-team__idx {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-about .about-team__name {
  margin: 8px 0 8px;
  font-family: var(--font-head);
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-team__duty {
  margin: 0;
  font-size: 15px;
  color: var(--text-soft);
}

.page-about .about-team__more {
  margin: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-size: 14px;
  line-height: 1.75;
  color: var(--cyan-soft);
  transition: max-height 0.36s var(--ease), opacity 0.28s var(--ease), margin-top 0.36s var(--ease);
}

.page-about .about-team__card:hover .about-team__more,
.page-about .about-team__card:focus-within .about-team__more {
  max-height: 220px;
  opacity: 1;
  margin-top: 12px;
}

.page-about .about-team__media {
  margin: 26px 0 0;
}

/* ---------- 生态 ---------- */
.page-about .about-eco {
  margin-top: 24px;
}

.page-about .about-eco__item {
  position: relative;
  padding: 20px 20px 22px 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(200deg, rgba(11, 43, 38, 0.9), rgba(18, 63, 54, 0.5));
}

.page-about .about-eco__dot {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--orange);
  margin-bottom: 14px;
}

.page-about .about-eco__name {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-eco__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-about .about-eco__media {
  margin: 26px 0 0;
}

/* ---------- 服务覆盖 ---------- */
.page-about .about-cover {
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-ink);
}

.page-about .about-cover__row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-ink);
}

.page-about .about-cover__row dt {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: #1e6b57;
}

.page-about .about-cover__row dd {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--graphite);
}

.page-about .about-cover__contact {
  margin-top: 26px;
  padding: 20px;
  border: 1px solid var(--line-ink);
  border-radius: var(--radius);
  background: var(--paper-2);
}

.page-about .about-cover__contact p {
  margin: 0;
  font-size: 15px;
  color: var(--ink-text);
}

.page-about .about-cover__lines {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.9;
  color: var(--ink-text-soft);
  word-break: break-word;
}

.page-about .about-cover__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0 0;
}

.page-about .about-tail {
  margin: 26px 0 0;
  font-size: 12px;
  letter-spacing: 0.04em;
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 720px) {
  .page-about .about-points {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-mile {
    display: grid;
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 0 20px;
    padding-left: 30px;
  }

  .page-about .about-mile__year {
    margin-bottom: 0;
    padding-top: 3px;
  }

  .page-about .about-cover {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 46px 0 56px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: 48px;
    align-items: center;
  }

  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-split {
    grid-template-columns: 156px minmax(0, 1fr);
    gap: 36px;
  }

  .page-about .about-sec {
    padding: 46px 0;
  }

  .page-about .about-sec--paper {
    padding: 44px 40px 48px;
  }

  .page-about .about-body .lede {
    font-size: 19px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 108px;
    order: 0;
  }

  .page-about .about-toc {
    border-left: 1px solid var(--line);
    padding-left: 18px;
  }

  .page-about .about-toc .toc-list {
    display: grid;
    gap: 2px;
  }

  .page-about .about-toc .toc-link {
    border: 0;
    border-radius: 0;
    padding: 8px 0 8px 10px;
    white-space: normal;
    background: transparent;
    box-shadow: inset 2px 0 0 transparent;
    transition: color 0.22s var(--ease), box-shadow 0.22s var(--ease), padding-left 0.22s var(--ease);
  }

  .page-about .about-toc .toc-link:hover {
    color: var(--cyan);
  }

  .page-about .about-toc .toc-link[aria-current="true"] {
    color: var(--cyan);
    background: transparent;
    border-color: transparent;
    padding-left: 14px;
    box-shadow: inset 2px 0 0 var(--cyan);
  }
}

@media (min-width: 1200px) {
  .page-about .about-layout {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 72px;
  }
}
<<<END>>>