.page-about {
  position: relative;
  isolation: isolate;
  overflow-x: clip;
  background: var(--ink);
  color: var(--paper);
}

.page-about::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(27, 74, 62, 0.32) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27, 74, 62, 0.32) 1px, transparent 1px);
  background-size: var(--grid) var(--grid);
  -webkit-mask-image: linear-gradient(to bottom, #000 0, #000 46%, transparent 78%);
  mask-image: linear-gradient(to bottom, #000 0, #000 46%, transparent 78%);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding-top: 22px;
  padding-bottom: 2px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
}

.page-about .about-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.page-about .about-hero__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 32%;
  opacity: 0.32;
}

.page-about .about-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 88% at 84% 6%, rgba(255, 122, 47, 0.2), transparent 58%),
    linear-gradient(100deg, rgba(11, 31, 26, 0.97) 0%, rgba(11, 31, 26, 0.88) 44%, rgba(11, 31, 26, 0.58) 100%);
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  padding-block: 34px 44px;
}

.page-about .about-hero__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(27px, 6vw, 52px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--paper-hi);
  margin: 15px 0 20px;
  max-width: 22em;
  text-shadow: 2px 2px 0 var(--edge);
}

.page-about .about-hero__mark {
  position: relative;
  color: var(--cyan);
  background-image: linear-gradient(to top, rgba(43, 227, 200, 0.24) 0, rgba(43, 227, 200, 0.24) 0.26em, transparent 0.26em);
  background-repeat: no-repeat;
  background-position: 0 100%;
}

.page-about .about-hero__lead {
  margin: 0 0 26px;
  font-size: 17px;
  line-height: 1.75;
  max-width: var(--measure);
  color: rgba(232, 225, 210, 0.88);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  max-width: 760px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-hero__stat {
  background: rgba(11, 31, 26, 0.86);
  padding: 14px 16px 16px;
}

.page-about .about-hero__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: 0.04em;
  color: var(--yellow);
}

.page-about .about-hero__unit {
  font-style: normal;
  font-size: 0.72em;
  margin-left: 2px;
  color: var(--orange);
}

.page-about .about-hero__cap {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

.page-about .about-index {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-about .about-index__lead {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-about .about-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-index__list a {
  display: inline-block;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--paper);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--cyan-soft);
}

/* ---------- 发展历程 ---------- */
.page-about .about-journey {
  padding: 50px 0 40px;
}

.page-about .about-journey__lead {
  margin-top: 22px;
}

.page-about .about-journey__plate {
  margin: 26px 0 6px;
}

.page-about .about-track {
  --axis: 20px;
  position: relative;
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-about .about-track__item {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  column-gap: 14px;
  padding: 13px 0;
}

.page-about .about-track__item::before {
  content: "";
  position: absolute;
  left: var(--axis);
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--line);
}

.page-about .about-track__item:first-child::before {
  top: 34px;
  background: linear-gradient(to bottom, transparent 0, var(--line) 26px);
}

.page-about .about-track__item:last-child::before {
  bottom: auto;
  height: 36px;
  background: linear-gradient(to bottom, var(--line), transparent);
}

.page-about .about-track__item::after {
  content: "";
  position: absolute;
  left: var(--axis);
  top: 30px;
  width: 11px;
  height: 11px;
  box-sizing: border-box;
  transform: translateX(-50%);
  border: 2px solid var(--cyan);
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 0 4px rgba(43, 227, 200, 0.1);
}

.page-about .about-track__year {
  display: block;
  padding-top: 25px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--yellow);
}

.page-about .about-stage {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 17px 17px 19px;
  background: var(--ink-2);
  box-shadow: var(--shadow-card);
  transition: border-color 0.25s ease;
}

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

.page-about .about-stage--mid {
  background: var(--ink-3);
}

.page-about .about-stage--paper {
  background: var(--paper);
  border-color: var(--paper-line);
  color: var(--ink);
}

.page-about .about-stage__tag {
  display: inline-block;
  margin: 0 0 11px;
}

.page-about .about-stage__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.4;
  color: var(--paper-hi);
  margin: 0 0 10px;
}

.page-about .about-stage--paper .about-stage__title {
  color: var(--ink);
}

.page-about .about-stage__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(232, 225, 210, 0.82);
  max-width: 34em;
}

.page-about .about-stage--paper .about-stage__text {
  color: rgba(11, 31, 26, 0.84);
}

.page-about .about-stage__list {
  list-style: none;
  margin: 13px 0 0;
  padding: 0;
  display: grid;
  gap: 7px;
}

.page-about .about-stage__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.6;
  color: rgba(232, 225, 210, 0.7);
}

.page-about .about-stage--paper .about-stage__list li {
  color: rgba(11, 31, 26, 0.76);
}

.page-about .about-stage__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  background: var(--orange);
}

@media (min-width: 860px) {
  .page-about .about-journey {
    padding: 68px 0 52px;
  }
  .page-about .about-track {
    --axis: 44px;
    margin-top: 30px;
  }
  .page-about .about-track__item {
    grid-template-columns: 92px minmax(0, 1fr);
    column-gap: 24px;
    padding: 16px 0;
  }
  .page-about .about-track__year {
    font-size: 16px;
    padding-top: 27px;
  }
  .page-about .about-stage {
    padding: 22px 24px 24px;
  }
  .page-about .about-stage__title {
    font-size: 22px;
  }
  .page-about .about-stage__text {
    font-size: 16px;
  }
}

/* ---------- 团队构成 ---------- */
.page-about .about-team {
  padding: 46px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-team__layout {
  display: grid;
  gap: 32px;
  margin-top: 24px;
}

.page-about .about-team__main .prose {
  margin-top: 0;
}

.page-about .about-ratio {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .about-ratio__row {
  display: grid;
  gap: 8px;
}

.page-about .about-ratio__bar {
  position: relative;
  height: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(27, 74, 62, 0.3);
  overflow: hidden;
}

.page-about .about-ratio__bar::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, rgba(6, 15, 13, 0.24) 0 1px, transparent 1px 8px);
}

.page-about .about-ratio__fill {
  position: absolute;
  inset: 0 auto 0 0;
  transition: filter 0.25s ease;
}

.page-about .about-ratio__row:hover .about-ratio__fill {
  filter: brightness(1.14);
}

.page-about .about-ratio__fill--a {
  width: 60.3%;
  background: linear-gradient(90deg, var(--cyan) 0%, rgba(43, 227, 200, 0.4) 100%);
}

.page-about .about-ratio__fill--b {
  width: 26.5%;
  background: linear-gradient(90deg, var(--orange) 0%, rgba(255, 122, 47, 0.4) 100%);
}

.page-about .about-ratio__fill--c {
  width: 13.2%;
  background: linear-gradient(90deg, var(--yellow) 0%, rgba(255, 201, 60, 0.36) 100%);
}

.page-about .about-ratio__meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
}

.page-about .about-ratio__label {
  font-size: 15.5px;
  color: var(--paper-hi);
}

.page-about .about-ratio__num {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  white-space: nowrap;
}

.page-about .about-ratio__role {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.65;
  letter-spacing: 0.02em;
  color: var(--muted);
  opacity: 0.72;
  transition: opacity 0.22s ease, color 0.22s ease;
}

.page-about .about-ratio__row:hover .about-ratio__role,
.page-about .about-ratio__row:focus-within .about-ratio__role {
  opacity: 1;
  color: var(--paper);
}

.page-about .about-team__aside {
  display: grid;
  gap: 22px;
  align-content: start;
}

.page-about .about-team__note {
  padding: 20px 20px 22px;
}

.page-about .about-team__note-title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 16px;
  color: var(--ink);
}

.page-about .about-team__note p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(11, 31, 26, 0.82);
}

@media (min-width: 980px) {
  .page-about .about-team {
    padding: 66px 0;
  }
  .page-about .about-team__layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 44px;
    align-items: start;
  }
}

/* ---------- 覆盖范围 ---------- */
.page-about .about-reach {
  padding: 46px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-reach__board {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 24px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-reach__cell {
  background: var(--ink-2);
  padding: 20px 18px 22px;
}

.page-about .about-reach__cell:nth-child(3n + 1) {
  box-shadow: inset 0 3px 0 var(--cyan);
}

.page-about .about-reach__cell:nth-child(3n + 2) {
  box-shadow: inset 0 3px 0 var(--orange);
}

.page-about .about-reach__cell:nth-child(3n) {
  box-shadow: inset 0 3px 0 var(--yellow);
}

.page-about .about-reach__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1.1;
  letter-spacing: 0.03em;
  color: var(--paper-hi);
}

.page-about .about-reach__unit {
  font-style: normal;
  font-size: 0.58em;
  margin-left: 4px;
  color: var(--cyan);
}

.page-about .about-reach__cap {
  display: block;
  margin-top: 9px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-reach__foot {
  margin-top: 26px;
}

@media (min-width: 720px) {
  .page-about .about-reach {
    padding: 62px 0;
  }
  .page-about .about-reach__board {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-reach__cell {
    padding: 24px 22px 26px;
  }
  .page-about .about-reach__num {
    font-size: 30px;
  }
}

/* ---------- 线下活动 ---------- */
.page-about .about-offline {
  position: relative;
  padding: 46px 0 8px;
  border-top: 1px solid var(--line);
  overflow: hidden;
}

.page-about .about-offline__layout {
  display: grid;
  gap: 26px;
  margin-top: 24px;
}

.page-about .about-offline__text .prose {
  margin-top: 0;
  margin-bottom: 18px;
}

.page-about .about-offline__points {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding-top: 20px;
}

.page-about .about-offline__points li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: 15.5px;
  line-height: 1.7;
  color: rgba(232, 225, 210, 0.86);
}

.page-about .about-offline__points .mono {
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-about .about-offline__note {
  padding: 22px 22px 24px;
  background:
    linear-gradient(150deg, rgba(43, 227, 200, 0.1), transparent 52%),
    var(--ink-2);
}

.page-about .about-offline__note-cap {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-about .about-offline__note-text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(232, 225, 210, 0.82);
  max-width: 34em;
}

.page-about .about-skyline {
  display: block;
  width: 100%;
  height: 90px;
  margin-top: 30px;
  color: var(--line);
}

@media (min-width: 860px) {
  .page-about .about-offline {
    padding: 62px 0 12px;
  }
  .page-about .about-offline__layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }
  .page-about .about-skyline {
    height: 130px;
    margin-top: 40px;
  }
}

/* ---------- 服务准则 ---------- */
.page-about .about-principles {
  padding: 46px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-principles__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-principles__item {
  background: var(--ink);
  padding: 22px 20px 24px;
  display: grid;
  gap: 9px;
  transition: background-color 0.25s ease;
}

.page-about .about-principles__item:hover {
  background: var(--ink-2);
}

.page-about .about-principles__idx {
  font-size: 12.5px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-about .about-principles__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.4;
  color: var(--paper-hi);
}

.page-about .about-principles__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(232, 225, 210, 0.8);
  max-width: 32em;
}

@media (min-width: 760px) {
  .page-about .about-principles {
    padding: 62px 0;
  }
  .page-about .about-principles__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-principles__item {
    padding: 28px 26px 30px;
  }
  .page-about .about-principles__title {
    font-size: 20px;
  }
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding: 12px 0 60px;
}

.page-about .about-next__panel {
  display: grid;
  gap: 24px;
  padding: 28px 22px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(140deg, rgba(43, 227, 200, 0.1), transparent 48%),
    linear-gradient(320deg, rgba(255, 122, 47, 0.1), transparent 42%),
    var(--ink-2);
}

.page-about .about-next__title {
  margin: 12px 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 21px;
  line-height: 1.4;
  color: var(--paper-hi);
}

.page-about .about-next__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(232, 225, 210, 0.8);
  max-width: 34em;
}

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

@media (min-width: 860px) {
  .page-about .about-next {
    padding: 20px 0 80px;
  }
  .page-about .about-next__panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 36px;
    padding: 38px 40px;
  }
  .page-about .about-next__title {
    font-size: 26px;
  }
}