.page-about {
  --ab-rail: 32px;
  --ab-gap: 14px;
  --ab-paper-ink: #101C18;
  --ab-paper-dim: rgba(16, 28, 24, .82);
  background: var(--lz-ink);
  color: var(--lz-paper);
  overflow-x: clip;
  position: relative;
}

@media (min-width: 900px) {
  .page-about {
    --ab-rail: 96px;
    --ab-gap: 40px;
  }
}

/* ---------- 首屏 ---------- */

.about-hero {
  position: relative;
  padding-block: clamp(36px, 6vw, 72px) clamp(34px, 5vw, 58px);
  background:
    radial-gradient(115% 95% at 10% 0%, rgba(11, 59, 46, .96) 0%, rgba(7, 31, 25, .98) 58%, #071F19 100%);
  border-bottom: 1px solid var(--lz-line);
  overflow: hidden;
}

.about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(124, 255, 107, .055) 0 1px, transparent 1px 86px),
    repeating-linear-gradient(0deg, rgba(124, 255, 107, .04) 0 1px, transparent 1px 86px);
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
}

.about-hero > .lz-container {
  position: relative;
  z-index: 1;
}

.about-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--lz-mist);
  margin-bottom: clamp(22px, 3vw, 34px);
}

.about-crumb a {
  color: var(--lz-mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--lz-ease), border-color .2s var(--lz-ease);
}

.about-crumb a:hover,
.about-crumb a:focus-visible {
  color: var(--lz-lime);
  border-bottom-color: var(--lz-lime);
}

.about-crumb__sep {
  opacity: .45;
}

.about-crumb__current {
  color: var(--lz-paper);
}

.about-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--lz-gold);
  margin: 0 0 16px;
}

.about-eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--lz-gold);
}

.about-hero__title {
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  font-family: var(--lz-font-display);
  font-size: clamp(32px, 7.4vw, 76px);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -.022em;
  color: #fff;
  max-width: 20ch;
}

.about-hero__title em {
  font-style: normal;
  color: var(--lz-gold);
}

.about-hero__lead {
  margin: 0 0 clamp(26px, 3.6vw, 44px);
  font-size: clamp(15.5px, 1.5vw, 18.5px);
  line-height: 1.8;
  color: rgba(243, 239, 228, .84);
  max-width: 64ch;
}

.about-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--lz-line);
  border: 1px solid var(--lz-line);
  border-radius: var(--lz-radius);
  overflow: hidden;
  max-width: 980px;
}

@media (min-width: 760px) {
  .about-metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.about-metric {
  background: rgba(7, 31, 25, .88);
  padding: 16px 14px 18px;
}

@media (min-width: 900px) {
  .about-metric {
    padding: 20px 20px 22px;
  }
}

.about-metric__num {
  display: block;
  font-family: var(--lz-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(22px, 3.2vw, 34px);
  font-weight: 700;
  line-height: 1;
  color: var(--lz-gold);
  margin-bottom: 8px;
  letter-spacing: -.01em;
}

.about-metric__label {
  display: block;
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--lz-mist);
}

/* ---------- 纵向骨架 ---------- */

.about-block {
  position: relative;
}

.about-block + .about-block {
  border-top: 1px solid rgba(159, 179, 171, .13);
}

.about-node {
  position: relative;
  display: grid;
  grid-template-columns: var(--ab-rail) minmax(0, 1fr);
  column-gap: var(--ab-gap);
  padding-block: clamp(40px, 6vw, 84px);
}

.about-node::before {
  content: "";
  position: absolute;
  left: calc(var(--ab-rail) / 2 - 1px);
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, rgba(232, 179, 65, .44), rgba(232, 179, 65, .13));
}

.about-node__mark {
  grid-column: 1;
  grid-row: 1;
  justify-self: center;
  width: 12px;
  height: 12px;
  margin-top: 12px;
  border-radius: 50%;
  background: var(--lz-gold);
  box-shadow: 0 0 0 6px rgba(232, 179, 65, .13);
  position: relative;
  z-index: 1;
}

.about-node__body {
  grid-column: 2;
  grid-row: 1;
  min-width: 0;
}

/* ---------- 章节标题 ---------- */

.about-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  margin-bottom: 20px;
}

.about-head__tag {
  flex: none;
  font-family: var(--lz-font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--lz-gold);
  padding: 4px 10px;
  border: 1px solid rgba(232, 179, 65, .42);
  border-radius: 999px;
  white-space: nowrap;
}

.about-head__title {
  margin: 0;
  font-family: var(--lz-font-display);
  font-size: clamp(22px, 3.6vw, 38px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.016em;
  color: #fff;
}

/* ---------- 正文 ---------- */

.about-text {
  margin: 0;
  font-size: 16.5px;
  line-height: 1.8;
  color: rgba(243, 239, 228, .8);
  max-width: 68ch;
}

.about-text + .about-text {
  margin-top: 16px;
}

.about-text strong {
  color: #fff;
  font-weight: 700;
}

.about-text a {
  color: var(--lz-lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(124, 255, 107, .38);
  transition: border-color .2s var(--lz-ease);
}

.about-text a:hover,
.about-text a:focus-visible {
  border-bottom-color: var(--lz-lime);
}

/* ---------- 暖纸面板 ---------- */

.about-stage {
  position: relative;
  overflow: hidden;
  background: var(--lz-paper);
  border-radius: var(--lz-radius);
  padding: clamp(20px, 3vw, 34px);
  box-shadow: 0 20px 44px rgba(0, 0, 0, .34);
}

.about-stage::after {
  content: "";
  position: absolute;
  right: -52px;
  top: -52px;
  width: 158px;
  height: 158px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 179, 65, .3), transparent 70%);
  pointer-events: none;
}

.about-stage .about-text {
  color: var(--ab-paper-dim);
  position: relative;
  z-index: 1;
}

.about-stage .about-text strong {
  color: var(--ab-paper-ink);
}

.about-stage .about-text a {
  color: #1d5ad0;
  border-bottom-color: rgba(29, 90, 208, .35);
}

.about-stage .about-text a:hover {
  border-bottom-color: #1d5ad0;
}

.about-stage__kick {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  font-family: var(--lz-font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  color: #8a6412;
}

.about-stage__kick::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lz-gold);
}

/* ---------- 分段切换 ---------- */

.about-tabs-wrap {
  min-width: 0;
}

.about-tabs {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  margin-bottom: 20px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.about-tabs::-webkit-scrollbar {
  display: none;
}

.about-tab {
  flex: 0 0 auto;
  appearance: none;
  font: inherit;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: .01em;
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--lz-line);
  background: rgba(27, 42, 56, .62);
  color: var(--lz-mist);
  cursor: pointer;
  transition: color .2s var(--lz-ease), border-color .2s var(--lz-ease), background .2s var(--lz-ease);
}

.about-tab:hover {
  color: var(--lz-paper);
  border-color: var(--lz-line-strong);
}

.about-tab[aria-selected="true"] {
  background: var(--lz-lime);
  border-color: var(--lz-lime);
  color: #06170f;
}

.about-tab:focus-visible {
  outline: 2px solid var(--lz-lime);
  outline-offset: 2px;
}

.about-panels {
  min-width: 0;
}

.about-panel[hidden] {
  display: none;
}

/* ---------- 覆盖版图 ---------- */

.about-map {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--lz-line);
  border-radius: var(--lz-radius);
  background: linear-gradient(158deg, #0B3B2E 0%, #071F19 72%);
  padding: clamp(20px, 3.4vw, 40px);
}

.about-map__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .3;
  filter: saturate(.68);
}

.about-map__veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 31, 25, .74) 0%, rgba(7, 31, 25, .95) 100%);
}

.about-map__content {
  position: relative;
  z-index: 1;
}

.about-dots {
  display: block;
  width: 100%;
  height: auto;
  margin: clamp(18px, 3vw, 30px) 0 4px;
}

.about-dots circle {
  fill: rgba(159, 179, 171, .5);
  transition: fill .22s var(--lz-ease);
}

.about-dots circle.is-gold {
  fill: var(--lz-gold);
}

.about-dots circle.is-lime {
  fill: var(--lz-lime);
}

.about-dots circle:hover {
  fill: #ffffff;
}

.about-map__facts {
  list-style: none;
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--lz-line);
  border: 1px solid var(--lz-line);
}

.about-map__facts li {
  background: rgba(7, 31, 25, .72);
  padding: 14px 12px 16px;
}

.about-map__num {
  display: block;
  font-family: var(--lz-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(19px, 2.6vw, 28px);
  font-weight: 700;
  line-height: 1;
  color: var(--lz-gold);
  margin-bottom: 7px;
}

.about-map__label {
  display: block;
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--lz-mist);
}

/* ---------- 团队 ---------- */

.about-team {
  display: grid;
  gap: 24px;
}

@media (min-width: 960px) {
  .about-team {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: 40px;
    align-items: start;
  }
}

.about-team__main {
  min-width: 0;
}

.about-figure {
  margin: 0;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--lz-line);
  border-radius: var(--lz-radius);
  box-shadow: 0 22px 46px rgba(0, 0, 0, .42);
}

.about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.about-figure__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0;
  padding: 14px 16px;
  font-size: 12.5px;
  letter-spacing: .03em;
  color: rgba(243, 239, 228, .9);
  background: linear-gradient(180deg, transparent, rgba(7, 31, 25, .92));
}

/* ---------- 合作 ---------- */

.about-partners__figures {
  list-style: none;
  margin: 0 0 clamp(24px, 3.4vw, 34px);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--lz-line);
  border: 1px solid var(--lz-line);
  border-radius: var(--lz-radius);
  overflow: hidden;
}

.about-partners__figures li {
  background: rgba(27, 42, 56, .52);
  padding: clamp(14px, 2vw, 22px);
}

.about-partners__num {
  display: block;
  font-family: var(--lz-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px, 3.4vw, 38px);
  font-weight: 700;
  line-height: 1;
  color: var(--lz-lime);
  margin-bottom: 8px;
}

.about-partners__label {
  display: block;
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--lz-mist);
}

.about-partners__grid {
  display: grid;
  gap: 24px;
}

@media (min-width: 960px) {
  .about-partners__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .92fr);
    gap: 40px;
    align-items: start;
  }
}

.about-partners__text .about-btn {
  margin-top: 24px;
}

/* ---------- 按钮 ---------- */

.about-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: .02em;
  padding: 12px 24px;
  border-radius: 999px;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform .2s var(--lz-ease), background .2s var(--lz-ease), color .2s var(--lz-ease), border-color .2s var(--lz-ease);
}

.about-btn::after {
  content: "→";
  font-size: 1em;
  transition: transform .2s var(--lz-ease);
}

.about-btn:hover::after {
  transform: translateX(3px);
}

.about-btn--gold {
  background: var(--lz-gold);
  color: #2a1c00;
}

.about-btn--gold:hover {
  background: #f3c257;
}

.about-btn--lime {
  background: var(--lz-lime);
  color: #06170f;
}

.about-btn--lime:hover {
  background: #98ff8b;
}

.about-btn--ghost {
  background: transparent;
  border-color: var(--lz-line-strong);
  color: var(--lz-paper);
}

.about-btn--ghost:hover {
  border-color: var(--lz-lime);
  color: var(--lz-lime);
}

.about-btn:focus-visible {
  outline: 2px solid var(--lz-lime);
  outline-offset: 3px;
}

/* ---------- 读者场景 ---------- */

.about-readers__lead {
  margin-bottom: 22px;
}

.about-readers {
  display: grid;
  gap: 14px;
}

@media (min-width: 880px) {
  .about-readers {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

.about-reader {
  background: rgba(27, 42, 56, .5);
  border: 1px solid var(--lz-line);
  border-radius: var(--lz-radius);
  overflow: hidden;
  backdrop-filter: blur(7px);
  -webkit-backdrop-filter: blur(7px);
}

.about-reader > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  font-family: var(--lz-font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: #fff;
}

.about-reader > summary::-webkit-details-marker {
  display: none;
}

.about-reader > summary:focus-visible {
  outline: 2px solid var(--lz-lime);
  outline-offset: -2px;
}

.about-reader__title {
  min-width: 0;
}

.about-reader__chev {
  flex: none;
  margin-left: auto;
  width: 22px;
  height: 22px;
  border: 1px solid var(--lz-line-strong);
  border-radius: 50%;
  position: relative;
  transition: transform .25s var(--lz-ease), border-color .25s var(--lz-ease);
}

.about-reader__chev::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 7px;
  height: 7px;
  border-right: 2px solid var(--lz-mist);
  border-bottom: 2px solid var(--lz-mist);
  transform: translate(-50%, -68%) rotate(45deg);
}

.about-reader[open] .about-reader__chev {
  transform: rotate(180deg);
  border-color: var(--lz-lime);
}

.about-reader__body {
  padding: 0 20px 20px;
}

.about-reader__body .about-text {
  font-size: 15.5px;
  color: rgba(243, 239, 228, .78);
}

/* ---------- 收尾 ---------- */

.about-block--last {
  background:
    radial-gradient(100% 120% at 8% 100%, rgba(11, 59, 46, .85) 0%, rgba(7, 31, 25, .98) 70%);
}

.about-cta {
  background: rgba(27, 42, 56, .46);
  border: 1px solid var(--lz-line);
  border-radius: var(--lz-radius);
  padding: clamp(24px, 3.6vw, 44px);
}

.about-cta__title {
  margin: 0 0 16px;
  font-family: var(--lz-font-display);
  font-size: clamp(22px, 3.4vw, 34px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.016em;
  color: #fff;
}

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

@media (prefers-reduced-motion: reduce) {
  .about-tab,
  .about-btn,
  .about-btn::after,
  .about-reader__chev,
  .about-dots circle,
  .about-crumb a {
    transition: none !important;
  }
}
</main>