.page-about {
  background: var(--bg);
  color: var(--text);
  padding-bottom: clamp(40px, 7vw, 90px);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  padding-top: clamp(16px, 3vw, 30px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-top: clamp(22px, 4.5vw, 52px);
  padding-bottom: clamp(30px, 5vw, 60px);
  border-bottom: var(--line-soft);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(680px 300px at 90% -10%, rgba(255, 106, 26, 0.18), transparent 70%),
    radial-gradient(520px 260px at 4% 110%, rgba(92, 122, 90, 0.16), transparent 72%),
    repeating-linear-gradient(90deg, rgba(110, 114, 120, 0.1) 0 1px, transparent 1px 104px);
}

.page-about .about-hero > * {
  position: relative;
  z-index: 1;
}

.page-about .about-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 clamp(16px, 3vw, 26px);
  padding: 8px 14px;
  border: 1px solid rgba(110, 114, 120, 0.45);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.page-about .about-eyebrow__dot {
  width: 8px;
  height: 8px;
  background: var(--c-lime);
  transform: rotate(45deg);
  box-shadow: 0 0 0 3px rgba(182, 255, 59, 0.18);
}

.page-about .about-hero__title {
  margin: 0 0 clamp(16px, 2.4vw, 26px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.95rem, 5.2vw, 4.1rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--c-white);
  max-width: 20em;
}

.page-about .about-hero__title .hl {
  display: inline-block;
  padding: 0 6px;
  background: var(--c-lime);
  color: var(--c-ink);
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.85;
  color: rgba(242, 237, 228, 0.84);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(12px, 2vw, 20px);
  margin-top: clamp(26px, 4vw, 46px);
}

.page-about .about-stat {
  position: relative;
  padding: clamp(14px, 2vw, 22px);
  border: var(--line-soft);
  background: var(--surface);
}

.page-about .about-stat::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 34px;
  height: 3px;
  background: var(--c-orange);
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 3.2vw, 2.5rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-white);
}

.page-about .about-stat__num em {
  font-style: normal;
  margin-left: 2px;
  font-size: 0.5em;
  color: var(--c-orange);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

/* ---------- 主体双栏 ---------- */
.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 54px);
  padding-top: clamp(30px, 5vw, 62px);
}

.page-about .about-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-moss);
}

.page-about .about-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-rail__item {
  flex: 0 0 auto;
}

.page-about .about-rail__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 10px 12px;
  border-left: 3px solid transparent;
  border-bottom: 1px solid rgba(110, 114, 120, 0.24);
  color: var(--text-dim);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--c-white);
  border-left-color: var(--c-orange);
  background: rgba(22, 48, 79, 0.7);
}

.page-about .about-rail__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-orange);
}

.page-about .about-rail__label {
  font-size: 14px;
}

/* ---------- 章节 ---------- */
.page-about .about-sec {
  margin-bottom: clamp(40px, 7vw, 86px);
  scroll-margin-top: 96px;
}

.page-about .about-sec:last-of-type {
  margin-bottom: clamp(30px, 5vw, 60px);
}

.page-about .about-sec__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 2vw, 22px);
  align-items: start;
  padding-bottom: 14px;
  margin-bottom: clamp(20px, 3vw, 34px);
  border-bottom: var(--line-soft);
}

.page-about .about-sec__num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3vw, 2.35rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--c-rock);
  transition: -webkit-text-stroke-color var(--t-mid) var(--ease);
}

.page-about [data-reveal].is-revealed .about-sec__num {
  -webkit-text-stroke-color: var(--c-orange);
}

.page-about .about-sec__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.3rem, 2.6vw, 2.05rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--c-white);
}

.page-about .about-sec__kicker {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-moss);
}

/* ---------- 正文 ---------- */
.page-about .about-text {
  max-width: 68ch;
}

.page-about .about-text p {
  margin: 0 0 1.1em;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(242, 237, 228, 0.86);
}

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

.page-about .about-text--after {
  margin-top: clamp(18px, 2.6vw, 28px);
  font-size: 15px;
  line-height: 1.85;
  color: rgba(242, 237, 228, 0.86);
}

.page-about .about-link {
  color: var(--c-orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 26, 0.5);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-about .about-link:hover,
.page-about .about-link:focus-visible {
  color: var(--c-lime);
  border-bottom-color: var(--c-lime);
}

/* ---------- 引用块 ---------- */
.page-about .about-quote {
  margin: clamp(22px, 3.4vw, 36px) 0 0;
  padding: clamp(18px, 2.6vw, 28px);
  border-left: 6px solid var(--c-clay);
  background: rgba(185, 96, 63, 0.14);
}

.page-about .about-quote--clay {
  border-left-color: var(--c-clay);
  background: rgba(185, 96, 63, 0.14);
}

.page-about .about-quote p {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.05rem, 1.9vw, 1.45rem);
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--c-cream);
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 0 0 clamp(26px, 3.6vw, 46px);
}

.page-about .about-figure .media {
  border: 2px solid var(--c-ink);
  box-shadow: var(--shadow-deep);
  background: var(--c-space-2);
  overflow: hidden;
}

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

.page-about .about-figure .media__caption {
  display: block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

/* ---------- 时间线 ---------- */
.page-about .tl {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .tl__item {
  position: relative;
  padding: 0 0 clamp(22px, 3.2vw, 34px) clamp(18px, 2.6vw, 28px);
  border-left: 2px solid rgba(110, 114, 120, 0.34);
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 8px;
  width: 12px;
  height: 12px;
  background: var(--c-space);
  border: 2px solid var(--c-rock);
  transform: rotate(45deg);
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

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

.page-about .tl__item:hover,
.page-about .tl__item:focus-within,
.page-about .tl__item:focus {
  border-left-color: var(--c-orange);
  background: rgba(22, 48, 79, 0.5);
}

.page-about .tl__item:hover::before,
.page-about .tl__item:focus-within::before,
.page-about .tl__item:focus::before {
  border-color: var(--c-lime);
  background: var(--c-lime);
}

.page-about .tl__year {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: clamp(1.25rem, 2.3vw, 1.85rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-orange);
}

.page-about .tl__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.05rem, 1.7vw, 1.3rem);
  letter-spacing: -0.01em;
  color: var(--c-white);
}

.page-about .tl__summary {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 237, 228, 0.86);
}

.page-about .tl__detail {
  display: grid;
  grid-template-rows: 0fr;
  margin-top: 0;
  opacity: 0;
  transition: grid-template-rows var(--t-mid) var(--ease), opacity var(--t-mid) var(--ease), margin-top var(--t-mid) var(--ease);
}

.page-about .tl__detail > div {
  overflow: hidden;
}

.page-about .tl__detail p {
  margin: 0;
  padding-left: 14px;
  border-left: 3px solid var(--c-moss);
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .tl__item:hover .tl__detail,
.page-about .tl__item:focus-within .tl__detail,
.page-about .tl__item:focus .tl__detail {
  grid-template-rows: 1fr;
  margin-top: 12px;
  opacity: 1;
}

/* ---------- 三块服务 ---------- */
.page-about .svc-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2.2vw, 22px);
}

.page-about .svc {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(18px, 2.4vw, 26px);
  border: 2px solid var(--c-ink);
  background: var(--surface);
  box-shadow: var(--shadow-hard);
  transition: transform var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}

.page-about .svc:hover {
  transform: translate(-2px, -2px);
  border-color: var(--c-orange);
  box-shadow: var(--shadow-deep);
}

.page-about .svc .tag {
  align-self: flex-start;
}

.page-about .svc__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.15rem, 1.9vw, 1.45rem);
  letter-spacing: -0.01em;
  color: var(--c-white);
}

.page-about .svc__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 237, 228, 0.86);
}

.page-about .svc__scene {
  margin: auto 0 0;
  padding: 12px 14px;
  border-left: 3px solid var(--c-moss);
  background: rgba(92, 122, 90, 0.16);
  font-size: 14px;
  line-height: 1.75;
  color: rgba(242, 237, 228, 0.9);
}

.page-about .svc__scene strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--c-lime);
}

/* ---------- 团队 ---------- */
.page-about .team-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid rgba(110, 114, 120, 0.34);
}

.page-about .team-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: clamp(16px, 2.4vw, 24px) 0;
  border-bottom: 2px solid rgba(110, 114, 120, 0.34);
  transition: background var(--t-fast) var(--ease), padding-left var(--t-fast) var(--ease);
}

.page-about .team-row:hover {
  background: rgba(22, 48, 79, 0.6);
  padding-left: 10px;
}

.page-about .team-row__name {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-orange);
  align-self: start;
}

.page-about .team-row__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 237, 228, 0.86);
}

.page-about .team-row__metric {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.page-about .team-row__metric span {
  font-size: 1.6em;
  color: var(--c-lime);
  letter-spacing: -0.02em;
}

/* ---------- 数据板 ---------- */
.page-about .plate {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 2px solid var(--c-ink);
  box-shadow: var(--shadow-deep);
  background: var(--c-space-2);
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .plate__item {
  padding: clamp(16px, 2.4vw, 26px);
  border-right: 1px solid rgba(110, 114, 120, 0.3);
  border-bottom: 1px solid rgba(110, 114, 120, 0.3);
}

.page-about .plate__item:nth-child(2n) {
  border-right: 0;
}

.page-about .plate__item:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.page-about .plate__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--c-white);
}

.page-about .plate__num em {
  font-style: normal;
  margin-left: 3px;
  font-size: 0.42em;
  color: var(--c-orange);
  letter-spacing: 0.02em;
}

.page-about .plate__label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ---------- 坚持的做法 ---------- */
.page-about .principles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2.2vw, 22px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .principle {
  padding: clamp(18px, 2.6vw, 28px);
  border-left: 6px solid var(--c-clay);
  background: rgba(11, 27, 51, 0.6);
}

.page-about .principle--clay {
  border-left-color: var(--c-clay);
  background: rgba(185, 96, 63, 0.15);
}

.page-about .principle--moss {
  border-left-color: var(--c-moss);
  background: rgba(92, 122, 90, 0.16);
}

.page-about .principle--orange {
  border-left-color: var(--c-orange);
  background: rgba(255, 106, 26, 0.11);
}

.page-about .principle__key {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-cream);
}

.page-about .principle__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--c-white);
}

.page-about .principle__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 237, 228, 0.86);
}

/* ---------- 结尾行动 ---------- */
.page-about .about-cta {
  padding: clamp(22px, 3.4vw, 38px);
  border: 2px solid var(--c-ink);
  background: var(--surface);
  box-shadow: var(--shadow-hard);
}

.page-about .about-cta__title {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.2rem, 2.2vw, 1.7rem);
  letter-spacing: -0.02em;
  color: var(--c-white);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

  .page-about .plate__item {
    border-bottom: 0;
    border-right: 1px solid rgba(110, 114, 120, 0.3);
  }

  .page-about .plate__item:nth-child(2n) {
    border-right: 1px solid rgba(110, 114, 120, 0.3);
  }

  .page-about .plate__item:last-child {
    border-right: 0;
  }

  .page-about .team-row {
    grid-template-columns: 120px minmax(0, 1fr) 170px;
    gap: clamp(16px, 2.4vw, 30px);
    align-items: baseline;
  }
}

@media (min-width: 960px) {
  .page-about .about-body {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: clamp(36px, 4.5vw, 72px);
  }

  .page-about .about-rail {
    position: sticky;
    top: 104px;
    align-self: start;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 2px;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-about .about-rail__item {
    flex: initial;
  }

  .page-about .about-rail__link {
    width: 100%;
  }
}

@media (max-width: 959px) {
  .page-about .tl__detail {
    grid-template-rows: 1fr;
    margin-top: 12px;
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .svc,
  .page-about .tl__item,
  .page-about .tl__item::before,
  .page-about .tl__detail,
  .page-about .team-row,
  .page-about .about-rail__link,
  .page-about .about-sec__num {
    transition: none;
  }
}