.page-about {
  --about-hair: rgba(182, 255, 61, 0.24);
  --about-hair-soft: rgba(255, 255, 255, 0.08);
}

/* ---------- 首屏框景 ---------- */
.page-about .about-hero {
  padding: 10px 0 0;
}

.page-about .about-hero__frame {
  position: relative;
  padding: 34px 20px 28px;
  border-radius: var(--r-l);
  border: 1px solid var(--about-hair);
  background:
    radial-gradient(130% 105% at 100% 0%, rgba(182, 255, 61, 0.15), transparent 58%),
    radial-gradient(90% 80% at 0% 100%, rgba(255, 77, 28, 0.16), transparent 62%),
    linear-gradient(165deg, var(--ink-700) 0%, var(--ink-800) 58%, var(--ink-900) 100%);
  overflow: hidden;
}

.page-about .about-hero__corner {
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid var(--lime);
  opacity: 0.75;
}

.page-about .about-hero__corner--tl { top: 12px; left: 12px; border-right: 0; border-bottom: 0; border-radius: 8px 0 0 0; }
.page-about .about-hero__corner--tr { top: 12px; right: 12px; border-left: 0; border-bottom: 0; border-radius: 0 8px 0 0; }
.page-about .about-hero__corner--bl { bottom: 12px; left: 12px; border-right: 0; border-top: 0; border-radius: 0 0 0 8px; }
.page-about .about-hero__corner--br { bottom: 12px; right: 12px; border-left: 0; border-top: 0; border-radius: 0 0 8px 0; }

.page-about .about-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(28px, 7.6vw, 54px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--white);
  max-width: 18em;
}

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

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 12px;
  margin: 26px 0 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 1px dashed var(--about-hair);
}

.page-about .about-hero__num {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 8vw, 44px);
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--lime);
}

.page-about .about-hero__stats li:nth-child(2) .about-hero__num { color: var(--flare-soft); }

.page-about .about-hero__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--steel-soft);
}

/* ---------- 起点 ---------- */
.page-about .origin {
  display: grid;
  gap: 26px;
  min-width: 0;
}

.page-about .origin__text > p {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.78);
  max-width: 62ch;
}

.page-about .origin__points {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-about .origin__points li {
  position: relative;
  padding: 12px 14px 12px 16px;
  border-left: 3px solid var(--flare);
  border-radius: 0 var(--r-s) var(--r-s) 0;
  background: rgba(18, 58, 46, 0.7);
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.82);
}

.page-about .origin__points strong {
  color: var(--lime);
  font-weight: 700;
}

.page-about .origin__figure {
  margin: 0;
  min-width: 0;
}

.page-about .origin__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-m);
  border: 1px solid var(--about-hair);
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.page-about .origin__figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--steel);
}

/* ---------- 版本轨道 ---------- */
.page-about .about-versions__lead {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.74);
  max-width: 62ch;
}

.page-about .vtrack {
  position: relative;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .vtrack::before {
  content: "";
  position: absolute;
  top: 16px;
  bottom: 20px;
  left: 16px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--lime) 0%, rgba(182, 255, 61, 0.35) 55%, var(--flare) 100%);
}

.page-about .vtrack__item {
  position: relative;
  min-width: 0;
  padding: 0 0 26px 46px;
}

.page-about .vtrack__item:last-child {
  padding-bottom: 0;
}

.page-about .vtrack__badge {
  position: absolute;
  left: 0;
  top: 0;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--lime);
  color: var(--ink-900);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 14px;
  letter-spacing: -0.01em;
  box-shadow: 0 0 0 5px var(--ink-800);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-about .vtrack__item:nth-child(4) .vtrack__badge,
.page-about .vtrack__item:nth-child(5) .vtrack__badge {
  background: var(--flare);
  color: var(--white);
}

.page-about .vtrack__body {
  padding: 16px 16px 18px;
  border-radius: var(--r-m);
  border: 1px solid var(--about-hair-soft);
  background: linear-gradient(160deg, rgba(18, 58, 46, 0.92), rgba(7, 26, 20, 0.92));
}

.page-about .vtrack__kicker {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-about .vtrack__item:nth-child(4) .vtrack__kicker,
.page-about .vtrack__item:nth-child(5) .vtrack__kicker {
  color: var(--flare-soft);
}

.page-about .vtrack__title {
  margin: 8px 0 0;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--white);
  transition: color 0.28s var(--ease);
}

.page-about .vtrack__body p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.74);
}

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

.page-about .vtrack__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-m);
  border: 1px solid var(--about-hair-soft);
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-about .vtrack__figure figcaption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--steel);
}

@media (hover: hover) {
  .page-about .vtrack__item:hover .vtrack__badge {
    transform: scale(1.1);
    box-shadow: 0 0 0 5px var(--ink-800), 0 0 22px rgba(182, 255, 61, 0.42);
  }

  .page-about .vtrack__item:nth-child(4):hover .vtrack__badge,
  .page-about .vtrack__item:nth-child(5):hover .vtrack__badge {
    box-shadow: 0 0 0 5px var(--ink-800), 0 0 22px rgba(255, 77, 28, 0.45);
  }

  .page-about .vtrack__item:hover .vtrack__title {
    color: var(--lime);
  }

  .page-about .vtrack__item:nth-child(4):hover .vtrack__title,
  .page-about .vtrack__item:nth-child(5):hover .vtrack__title {
    color: var(--flare-soft);
  }
}

/* ---------- 内容团队 ---------- */
.page-about .about-team__dots {
  display: block;
  height: 10px;
  margin-bottom: 24px;
  background-image: radial-gradient(circle, rgba(182, 255, 61, 0.6) 1.6px, transparent 1.7px);
  background-size: 14px 10px;
  background-repeat: repeat-x;
}

.page-about .about-team__shell {
  padding: 26px 18px 28px;
  border-radius: var(--r-l);
  background: linear-gradient(150deg, var(--white) 0%, var(--panel) 100%);
  color: var(--ink-800);
}

.page-about .about-team__head p {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-700);
  max-width: 62ch;
}

.page-about .about-team__grid {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

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

.page-about .tcard {
  padding: 18px 16px 20px;
  border-radius: var(--r-m);
  background: var(--white);
  border: 1px solid rgba(11, 42, 33, 0.08);
  box-shadow: 0 10px 26px rgba(7, 26, 20, 0.06);
}

.page-about .tcard--lime { border-top: 4px solid var(--lime-deep); }
.page-about .tcard--flare { border-top: 4px solid var(--flare); }

.page-about .tcard__num {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(40px, 12vw, 60px);
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--ink-800);
}

.page-about .tcard--lime .tcard__num { color: var(--lime-deep); }
.page-about .tcard--flare .tcard__num { color: var(--flare); }

.page-about .tcard__title {
  margin: 6px 0 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-900);
}

.page-about .tcard p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

.page-about .about-team__shift {
  padding: 18px 16px 20px;
  border-radius: var(--r-m);
  border: 1px solid rgba(11, 42, 33, 0.1);
  background: rgba(255, 255, 255, 0.72);
}

.page-about .shift__title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-900);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--lime-deep);
  display: inline-block;
}

.page-about .shift__list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-about .shift__list li {
  padding-left: 14px;
  border-left: 3px solid var(--ink-700);
}

.page-about .shift__time {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--ink-700);
}

.page-about .shift__list p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

/* ---------- 本地与合作 ---------- */
.page-about .about-local__banner {
  margin: 0 0 26px;
}

.page-about .about-local__banner img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-l);
  border: 1px solid var(--about-hair);
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

.page-about .about-local__head p {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.74);
  max-width: 62ch;
}

.page-about .about-local__cards {
  display: grid;
  gap: 16px;
  margin-top: 26px;
}

.page-about .lcard {
  position: relative;
  padding: 20px 16px 22px;
  border-radius: var(--r-m);
  border: 1px solid var(--about-hair-soft);
  border-right: 4px solid var(--flare);
  background: linear-gradient(155deg, rgba(18, 58, 46, 0.85), rgba(7, 26, 20, 0.85));
}

.page-about .lcard__n {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 10vw, 46px);
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--lime);
}

.page-about .lcard__title {
  margin: 8px 0 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
}

.page-about .lcard p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.72);
}

/* ---------- 长期投入 ---------- */
.page-about .pledge {
  display: grid;
  gap: 18px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .pledge li {
  padding: 18px 0 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .pledge__idx {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.18em;
  color: var(--flare);
}

.page-about .pledge__title {
  margin: 8px 0 0;
  font-size: 19px;
  font-weight: 700;
  color: var(--white);
}

.page-about .pledge li p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.74);
}

.page-about .about-principles__legal {
  margin: 26px 0 0;
  padding: 14px 0 0;
  border-top: 1px dashed var(--about-hair);
  font-size: 13px;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 继续往下看 ---------- */
.page-about .about-next__links {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-next__links a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  border-radius: var(--r-m);
  border: 1px solid var(--about-hair);
  background: rgba(7, 26, 20, 0.6);
  text-decoration: none;
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease), background 0.28s var(--ease);
}

.page-about .about-next__name {
  font-size: 18px;
  font-weight: 700;
  color: var(--lime);
}

.page-about .about-next__desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
}

@media (hover: hover) {
  .page-about .about-next__links a:hover {
    transform: translateY(-4px);
    border-color: var(--lime);
    background: rgba(18, 58, 46, 0.85);
  }
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-about .about-hero__frame {
    padding: 48px 44px 40px;
  }

  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-team__shell {
    padding: 34px 32px 36px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 22px;
    align-items: start;
  }

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

  .page-about .about-local__cards > :nth-child(2) { margin-top: 24px; }
  .page-about .about-local__cards > :nth-child(3) { margin-top: 48px; }

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

  .page-about .pledge li {
    padding: 20px 22px 0 0;
    border-top: 2px solid rgba(182, 255, 61, 0.35);
  }

  .page-about .pledge li + li {
    padding-left: 22px;
    border-left: 1px solid rgba(182, 255, 61, 0.18);
  }

  .page-about .about-next__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-about .origin {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .vtrack {
    margin-top: 38px;
  }

  .page-about .vtrack__item {
    padding-left: 74px;
    padding-bottom: 30px;
  }

  .page-about .vtrack::before {
    left: 27px;
  }

  .page-about .vtrack__badge {
    width: 54px;
    height: 40px;
    border-radius: 12px;
    font-size: 17px;
  }

  .page-about .vtrack__body {
    padding: 24px 26px 26px;
  }

  .page-about .vtrack__title {
    font-size: 22px;
  }

  .page-about .about-versions__head {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 36px;
    align-items: end;
  }

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

  .page-about .about-local__head {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 40px;
    align-items: end;
  }

  .page-about .about-local__head p {
    margin: 0;
  }

  .page-about .about-next__inner {
    display: grid;
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-next__links {
    margin-top: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .vtrack__badge,
  .page-about .about-next__links a,
  .page-about .vtrack__title {
    transition: none;
  }

  .page-about .vtrack__item:hover .vtrack__badge,
  .page-about .about-next__links a:hover {
    transform: none;
  }
}