.page-about {
  --about-ticker-duration: 32s;
  background: var(--deep-court);
  color: var(--soft-white);
}

.page-about .crumb {
  padding-top: 24px;
  padding-bottom: 0;
}

/* ========== Hero ========== */
.page-about .about-hero {
  position: relative;
  padding: 0 0 40px;
  background:
    radial-gradient(ellipse at 85% -10%, rgba(30, 144, 255, .28) 0%, rgba(255, 106, 0, .06) 48%, transparent 72%),
    var(--panel-black);
  border-bottom: 1px solid var(--line-faint);
  overflow: hidden;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 36px;
  padding-top: 28px;
}

.page-about .about-hero__kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--fluoro-orange);
  margin: 0 0 14px;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-size: clamp(38px, 9vw, 72px);
  line-height: 1.02;
  text-transform: uppercase;
  letter-spacing: .01em;
  margin: 0 0 22px;
  transform: skewX(var(--skew));
  transform-origin: left bottom;
}

.page-about .about-hero__title span {
  display: block;
  color: var(--electro-blue);
  font-size: .62em;
  letter-spacing: .04em;
}

.page-about .about-hero__lead {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-dim);
  max-width: 60ch;
  margin: 0 0 28px;
}

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

.page-about .about-hero__board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  align-items: end;
}

.page-about .about-hero__cell {
  position: relative;
  border-radius: var(--radius);
  padding: 18px 12px 14px;
  background: var(--panel-black);
  border: 1px solid var(--line-faint);
  min-height: 112px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
}

.page-about .about-hero__cell::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--electro-blue);
}

.page-about .about-hero__cell--a {
  background: var(--fluoro-orange);
  border-color: transparent;
}

.page-about .about-hero__cell--a::after {
  background: var(--soft-white);
  opacity: .55;
}

.page-about .about-hero__cell--b {
  background: var(--electro-blue);
  border-color: transparent;
}

.page-about .about-hero__cell--b::after {
  background: var(--soft-white);
  opacity: .55;
}

.page-about .about-hero__cell--c {
  border-top: 3px solid var(--fluoro-orange);
}

.page-about .about-hero__cell--c::after {
  background: var(--fluoro-orange);
}

.page-about .about-hero__num {
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  font-weight: 700;
  color: var(--soft-white);
}

.page-about .about-hero__unit {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--soft-white);
  margin-left: 2px;
}

.page-about .about-hero__label {
  font-size: 12px;
  color: rgba(255, 255, 255, .78);
  margin-top: 6px;
  display: block;
  letter-spacing: .06em;
}

.page-about .about-hero__ticker {
  margin-top: 42px;
  padding: 12px 0;
  background: var(--deep-court);
  border-top: 1px solid var(--line-faint);
  border-bottom: 1px solid var(--line-faint);
  overflow: hidden;
  white-space: nowrap;
}

.page-about .about-hero__ticker-track {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--dim-gray);
  padding-right: 2rem;
  animation: aboutTicker var(--about-ticker-duration) linear infinite;
}

@keyframes aboutTicker {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero__ticker-track {
    animation: none;
  }
}

/* ========== 品牌初心 ========== */
.page-about .about-origin {
  padding: 64px 0;
}

.page-about .about-origin__grid {
  display: grid;
  gap: 36px;
  align-items: center;
}

.page-about .about-origin__media {
  position: relative;
  margin: 0;
}

.page-about .about-origin__media::before {
  content: "";
  position: absolute;
  top: 16px;
  left: 16px;
  right: 0;
  bottom: 0;
  border-radius: var(--radius);
  border: 1px dashed rgba(255, 106, 0, .35);
  background: rgba(255, 106, 0, .06);
  z-index: 0;
}

.page-about .about-origin__media img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--line-faint);
  object-fit: cover;
}

.page-about .about-origin__media figcaption {
  position: relative;
  z-index: 1;
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-about .about-origin__media figcaption::before {
  content: "";
  width: 24px;
  height: 3px;
  background: var(--fluoro-orange);
  transform: skewX(var(--skew));
}

.page-about .about-origin__body .section-label {
  display: inline-block;
  margin-bottom: 8px;
}

.page-about .about-origin__body .section-title {
  margin-bottom: 20px;
}

.page-about .about-origin__prose p {
  color: var(--text-dim);
  line-height: 1.8;
  margin: 0 0 16px;
}

.page-about .about-origin__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

/* ========== 升版时间轴 ========== */
.page-about .about-upgrade {
  padding: 72px 0;
  background: var(--panel-black);
}

.page-about .about-upgrade .section-head {
  margin-bottom: 48px;
}

.page-about .about-upgrade__pane {
  position: relative;
  max-width: 760px;
  margin-inline: auto;
}

.page-about .about-upgrade__arc {
  position: absolute;
  left: 0;
  top: 0;
  width: 48px;
  height: 100%;
  z-index: 0;
  opacity: .7;
}

.page-about .about-upgrade__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 56px;
  position: relative;
  z-index: 1;
}

.page-about .about-upgrade__item {
  position: relative;
  margin-bottom: 52px;
}

.page-about .about-upgrade__dot {
  position: absolute;
  left: 10px;
  top: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--panel-black);
  border: 3px solid var(--electro-blue);
  color: var(--electro-blue);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 5px rgba(30, 144, 255, .1);
}

.page-about .about-upgrade__card {
  background: var(--deep-court);
  border: 1px solid var(--line-faint);
  border-top: 3px solid var(--electro-blue);
  border-radius: var(--radius);
  padding: 22px 20px;
  transition: transform .25s ease, border-color .25s ease, background .25s ease;
}

.page-about .about-upgrade__card:hover {
  transform: translateY(-4px);
  border-top-color: var(--fluoro-orange);
  background: rgba(30, 144, 255, .06);
}

.page-about .about-upgrade__phase {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--fluoro-orange);
  margin-bottom: 8px;
}

.page-about .about-upgrade__card h3 {
  margin: 0 0 10px;
  font-size: 20px;
  font-family: var(--font-display);
  letter-spacing: .02em;
}

.page-about .about-upgrade__card p {
  margin: 0;
  color: var(--text-dim);
  line-height: 1.75;
  font-size: 14px;
}

.page-about .about-upgrade__acc {
  margin-top: 14px;
}

.page-about .about-upgrade__acc .acc-toggle {
  width: 100%;
  min-height: 44px;
  padding: 12px 16px;
  background: rgba(255, 106, 0, .1);
  border: 1px solid rgba(255, 106, 0, .35);
  border-radius: 8px;
  color: var(--fluoro-orange);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.page-about .about-upgrade__acc .acc-toggle::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
}

.page-about .about-upgrade__acc .acc-toggle[aria-expanded="true"]::after {
  content: "−";
}

.page-about .about-upgrade__acc .acc-panel-inner {
  padding-top: 12px;
}

.page-about .about-upgrade__map {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .about-upgrade__map li {
  position: relative;
  padding: 10px 12px 10px 16px;
  background: var(--panel-black);
  border-radius: 8px;
  border-left: 3px solid var(--fluoro-orange);
  font-size: 14px;
  color: var(--soft-white);
  line-height: 1.6;
}

.page-about .about-upgrade__export {
  display: flex;
  gap: 8px;
  margin-top: 14px;
}

.page-about .about-upgrade__visual {
  margin: 52px auto 0;
  max-width: 520px;
  text-align: center;
}

.page-about .about-upgrade__visual img {
  width: 100%;
  height: auto;
  max-width: 420px;
  border-radius: var(--radius);
  border: 1px solid var(--line-faint);
  box-shadow: -18px 18px 0 rgba(255, 106, 0, .1);
}

.page-about .about-upgrade__visual figcaption {
  margin-top: 14px;
  color: var(--text-dim);
  font-size: 13px;
}

/* ========== 数据能力 ========== */
.page-about .about-data {
  padding: 72px 0;
}

.page-about .about-data .section-head {
  margin-bottom: 36px;
}

.page-about .about-data__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 40px 0;
}

.page-about .about-data__stat {
  padding: 20px 18px;
  min-height: 148px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform .25s ease, border-color .25s ease;
}

.page-about .about-data__stat:hover {
  transform: translateY(-4px);
  border-color: var(--fluoro-orange);
}

.page-about .about-data__stat-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--text-dim);
}

.page-about .about-data__stat-num {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  color: var(--soft-white);
  display: block;
  margin: 10px 0 6px;
}

.page-about .about-data__stat-num span {
  color: var(--fluoro-orange);
}

.page-about .about-data__stat p {
  margin: 0;
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.6;
}

.page-about .about-data__chain {
  margin-top: 48px;
  padding: 28px 20px 20px;
  border: 1px solid var(--line-faint);
  border-left: 4px solid var(--fluoro-orange);
  border-radius: var(--radius);
  background: var(--panel-black);
}

.page-about .about-data__chain h3 {
  margin: 0 0 24px;
  font-size: 18px;
}

.page-about .about-data__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-data__step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 12px;
  align-items: center;
  padding: 14px;
  background: var(--deep-court);
  border-radius: 10px;
  border: 1px solid var(--line-faint);
  transition: border-color .25s ease, transform .25s ease;
}

.page-about .about-data__step:hover {
  border-color: var(--electro-blue);
  transform: translateX(4px);
}

.page-about .about-data__step-icon {
  grid-row: 1 / span 2;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(30, 144, 255, .12);
  color: var(--electro-blue);
}

.page-about .about-data__step-icon svg {
  width: 20px;
  height: 20px;
}

.page-about .about-data__step strong {
  font-size: 15px;
}

.page-about .about-data__step-desc {
  font-size: 13px;
  color: var(--text-dim);
}

.page-about .about-data__arrow {
  display: flex;
  justify-content: center;
  color: var(--fluoro-orange);
  font-family: var(--font-mono);
  padding-left: 56px;
  transform: rotate(90deg);
}

/* ========== 团队与理念 ========== */
.page-about .about-team {
  padding: 72px 0;
  background: var(--panel-black);
}

.page-about .about-team__grid {
  display: grid;
  gap: 44px;
  align-items: start;
}

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

.page-about .about-team__media img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--line-faint);
  box-shadow: 18px -18px 0 rgba(30, 144, 255, .1);
}

.page-about .about-team__media figcaption {
  margin-top: 12px;
  color: var(--text-dim);
  font-size: 13px;
}

.page-about .about-team__body .section-head {
  margin-bottom: 28px;
}

.page-about .about-team__depts {
  display: grid;
  gap: 14px;
  margin-bottom: 32px;
}

.page-about .about-team__dept {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 14px;
  padding: 18px 16px;
  background: var(--deep-court);
  border: 1px solid var(--line-faint);
  border-left: 4px solid var(--electro-blue);
  border-radius: 12px;
  transition: border-color .25s ease, transform .25s ease;
}

.page-about .about-team__dept:hover {
  border-left-color: var(--fluoro-orange);
  transform: translateX(4px);
}

.page-about .about-team__dept-icon {
  grid-row: 1 / span 2;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(30, 144, 255, .1);
  color: var(--electro-blue);
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-about .about-team__dept-icon svg {
  width: 24px;
  height: 24px;
}

.page-about .about-team__dept h3 {
  margin: 0;
  font-size: 17px;
}

.page-about .about-team__dept p {
  margin: 0;
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1.6;
}

.page-about .about-team__dept p strong {
  color: var(--fluoro-orange);
  font-family: var(--font-mono);
}

.page-about .about-team__motto {
  margin: 0;
  padding: 20px 20px 20px 24px;
  border: 1px solid rgba(255, 215, 0, .25);
  border-radius: 12px;
  background: rgba(255, 215, 0, .04);
}

.page-about .about-team__motto p {
  margin: 0;
  color: var(--soft-white);
  line-height: 1.8;
  font-size: 15px;
}

/* ========== 继续了解 + 信任 ========== */
.page-about .about-next {
  padding: 72px 0 80px;
}

.page-about .about-next__panel {
  padding: 32px 24px;
  border-radius: 16px;
  border: 1px solid var(--line-faint);
  border-left: 6px solid var(--fluoro-orange);
  background:
    linear-gradient(135deg, rgba(30, 144, 255, .16) 0%, transparent 55%),
    var(--panel-black);
}

.page-about .about-next__text h2 {
  font-family: var(--font-display);
  font-size: 26px;
  margin: 8px 0 12px;
}

.page-about .about-next__text p:last-child {
  color: var(--text-dim);
  line-height: 1.7;
  margin: 0;
}

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

.page-about .about-trust {
  margin-top: 32px;
  padding: 18px 20px;
  border-radius: 10px;
  background: rgba(255, 215, 0, .05);
  border: 1px solid rgba(255, 215, 0, .2);
}

.page-about .about-trust p {
  margin: 0;
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1.7;
}

/* ========== 响应式布局 ========== */
@media (min-width: 720px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    gap: 48px;
  }

  .page-about .about-upgrade__pane {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 0;
  }

  .page-about .about-upgrade__list {
    padding-left: 0;
  }

  .page-about .about-upgrade__arc {
    width: 56px;
  }

  .page-about .about-upgrade__dot {
    left: 10px;
  }

  .page-about .about-upgrade__visual img {
    max-width: 360px;
  }

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

@media (min-width: 980px) {
  .page-about .about-hero {
    padding-top: 56px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, .9fr);
    align-items: end;
  }

  .page-about .about-hero__board {
    grid-template-columns: 1fr;
  }

  .page-about .about-data__steps {
    grid-template-columns: minmax(0, 1fr) 44px minmax(0, 1fr) 44px minmax(0, 1fr) 44px minmax(0, 1fr);
    align-items: stretch;
    gap: 0;
  }

  .page-about .about-data__step {
    display: block;
    text-align: center;
    padding: 20px 14px;
  }

  .page-about .about-data__step-icon {
    margin: 0 auto 16px;
  }

  .page-about .about-data__step-desc {
    display: block;
    margin-top: 8px;
  }

  .page-about .about-data__arrow {
    transform: none;
    padding: 0;
    align-items: center;
  }

  .page-about .about-team__depts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-team__dept {
    display: block;
    padding: 20px;
  }

  .page-about .about-team__dept-icon {
    margin: 0 0 16px;
  }

  .page-about .about-team__dept h3 {
    margin-bottom: 10px;
  }
}

@media (min-width: 1080px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: 56px;
    align-items: center;
  }

  .page-about .about-next__panel {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 32px;
  }

  .page-about .about-next__actions {
    margin-top: 0;
    justify-content: flex-end;
    max-width: 480px;
  }
}