.page-about {
  --about-line: 2px solid var(--lj-steel);
  background: var(--lj-ink);
  color: var(--lj-fog);
  overflow-x: hidden;
}

.page-about .wrap {
  width: min(100% - 2 * var(--edge), var(--wrap));
  margin-inline: auto;
}

.page-about .about-h2 {
  font-size: clamp(26px, 4.4vw, 52px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.01em;
  margin: 10px 0 0;
  max-width: 20ch;
}

.page-about .about-intro {
  margin: 16px 0 0;
  color: var(--lj-silver);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  max-width: 58ch;
}

.page-about .about-section-head {
  margin-bottom: clamp(28px, 4vw, 52px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: calc(var(--header-h) + clamp(28px, 6vw, 72px)) 0 clamp(44px, 6vw, 84px);
  border-bottom: var(--about-line);
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(141, 107, 255, 0.20), transparent 62%),
    radial-gradient(90% 70% at 6% 8%, rgba(57, 242, 208, 0.10), transparent 66%),
    var(--lj-ink);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: repeating-linear-gradient(
    90deg,
    var(--lj-steel) 0 14px,
    transparent 14px 28px
  );
}

.page-about .about-hero__title {
  font-size: clamp(32px, 7vw, 82px);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin: 18px 0 0;
  max-width: 17ch;
  color: var(--lj-fog);
}

.page-about .about-hero__lead {
  margin: 24px 0 0;
  max-width: 60ch;
  color: var(--lj-silver);
  font-size: clamp(16px, 1.9vw, 19px);
  line-height: 1.85;
}

.page-about .about-meta {
  margin: 26px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--lj-silver);
  line-height: 1.9;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

/* ---------- 使命 ---------- */
.page-about .about-mission {
  padding: clamp(44px, 6vw, 92px) 0;
  border-bottom: var(--about-line);
  background: var(--lj-deck);
}

.page-about .about-mission__head {
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-about .about-quote {
  margin: 0;
  border-left: 6px solid var(--lj-cyan);
  padding: clamp(20px, 3vw, 34px) clamp(18px, 3.4vw, 44px);
  background: var(--lj-ink);
  box-shadow: var(--shadow-hard);
}

.page-about .about-quote p {
  margin: 0;
  font-size: clamp(19px, 3vw, 32px);
  font-weight: 500;
  line-height: 1.6;
  color: var(--lj-fog);
}

.page-about .about-quote em {
  font-style: normal;
  color: var(--lj-cyan);
  box-shadow: inset 0 -0.42em 0 rgba(57, 242, 208, 0.16);
}

.page-about .about-mission__cols {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  margin-top: clamp(30px, 4vw, 52px);
}

.page-about .about-mission__col h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--lj-fog);
}

.page-about .about-mission__col p {
  margin: 0;
  color: var(--lj-silver);
  font-size: 15px;
  line-height: 1.85;
}

/* ---------- 历程 ---------- */
.page-about .about-history {
  padding: clamp(44px, 6vw, 92px) 0;
  border-bottom: var(--about-line);
  background: var(--lj-ink);
}

.page-about .about-history__figure {
  margin: 0 0 clamp(30px, 4vw, 52px);
}

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

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--lj-cyan) 0%, var(--lj-steel) 72%, transparent 100%);
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 clamp(26px, 3.6vw, 42px) clamp(30px, 4vw, 46px);
  outline: none;
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 14px;
  height: 14px;
  border: 2px solid var(--lj-cyan);
  background: var(--lj-ink);
  transform: rotate(45deg);
  transition: background 0.18s ease, transform 0.18s ease;
}

.page-about .about-timeline__item:hover::before,
.page-about .about-timeline__item:focus-visible::before {
  background: var(--lj-cyan);
  transform: rotate(45deg) scale(1.15);
}

.page-about .about-timeline__item:focus-visible {
  box-shadow: 0 0 0 2px var(--lj-link);
  border-radius: 2px;
}

.page-about .about-timeline__year {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--lj-cyan);
}

.page-about .about-timeline__title {
  margin: 0 0 8px;
  font-size: clamp(17px, 2.2vw, 22px);
  font-weight: 700;
  color: var(--lj-fog);
}

.page-about .about-timeline__text {
  margin: 0;
  max-width: 60ch;
  color: var(--lj-silver);
  font-size: 15px;
  line-height: 1.85;
}

.page-about .about-history__more {
  margin: clamp(24px, 3vw, 36px) 0 0;
  font-size: 14px;
  color: var(--lj-silver);
}

.page-about .about-history__more a {
  color: var(--lj-link);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-about .about-history__more a:hover,
.page-about .about-history__more a:focus-visible {
  color: var(--lj-cyan);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: clamp(44px, 6vw, 92px) 0;
  border-bottom: var(--about-line);
  background: var(--lj-deck);
}

.page-about .about-team__body {
  display: grid;
  gap: clamp(26px, 3.6vw, 46px);
}

.page-about .about-roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border: var(--about-line);
  background: var(--lj-steel);
}

.page-about .about-roles__item {
  display: flex;
  gap: 16px;
  padding: clamp(16px, 2.6vw, 24px);
  background: var(--lj-ink);
  transition: background 0.18s ease;
}

.page-about .about-roles__item:hover {
  background: #101d32;
}

.page-about .about-roles__index {
  flex: none;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--lj-orange);
  letter-spacing: 0.04em;
}

.page-about .about-roles__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--lj-fog);
}

.page-about .about-roles__item p {
  margin: 0;
  color: var(--lj-silver);
  font-size: 14px;
  line-height: 1.8;
}

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

.page-about .about-check {
  margin-top: clamp(32px, 4.4vw, 56px);
  border: var(--about-line);
  border-top: 4px solid var(--lj-cyan);
  padding: clamp(20px, 3vw, 34px);
  background: var(--lj-ink);
}

.page-about .about-check__title {
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 800;
  color: var(--lj-fog);
}

.page-about .about-check__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
}

.page-about .about-check__list li strong {
  display: block;
  margin: 10px 0 6px;
  font-size: 16px;
  color: var(--lj-fog);
}

.page-about .about-check__list li p {
  margin: 0;
  color: var(--lj-silver);
  font-size: 14px;
  line-height: 1.8;
}

/* ---------- 规模 ---------- */
.page-about .about-reach {
  padding: clamp(44px, 6vw, 92px) 0;
  border-bottom: var(--about-line);
  background: var(--lj-ink);
}

.page-about .about-reach__layout {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
}

.page-about .reach-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2px;
  border: var(--about-line);
  background: var(--lj-steel);
}

.page-about .reach-cell {
  background: var(--lj-deck);
  padding: clamp(16px, 2.6vw, 24px);
  transition: background 0.18s ease;
}

.page-about .reach-cell:hover {
  background: #14233c;
}

.page-about .reach-cell__coord {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--lj-cyan);
}

.page-about .reach-cell__num {
  margin: 10px 0 4px;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.6vw, 38px);
  font-weight: 600;
  line-height: 1.1;
  color: var(--lj-fog);
}

.page-about .reach-cell__label {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--lj-silver);
}

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

.page-about .about-reach__notes {
  display: grid;
  gap: 2px;
  margin-top: clamp(28px, 3.6vw, 44px);
  border: var(--about-line);
  background: var(--lj-steel);
}

.page-about .about-note {
  padding: clamp(16px, 2.6vw, 24px);
  background: var(--lj-ink);
}

.page-about .about-note__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--lj-violet);
}

.page-about .about-note__text {
  margin: 0;
  color: var(--lj-silver);
  font-size: 14px;
  line-height: 1.8;
}

/* ---------- 合作 ---------- */
.page-about .about-partners {
  padding: clamp(44px, 6vw, 92px) 0;
  border-bottom: var(--about-line);
  background: var(--lj-deck);
}

.page-about .about-partners__grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
}

.page-about .about-partner {
  border: var(--about-line);
  padding: clamp(18px, 3vw, 28px);
  background: var(--lj-ink);
  transition: box-shadow 0.18s ease, transform 0.18s ease;
}

.page-about .about-partner:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hard);
}

.page-about .about-partner__coord {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--lj-cyan);
}

.page-about .about-partner__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 600;
  color: var(--lj-orange);
  line-height: 1.2;
}

.page-about .about-partner__title {
  margin: 8px 0 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--lj-fog);
}

.page-about .about-partner p:last-child {
  margin: 0;
  color: var(--lj-silver);
  font-size: 14px;
  line-height: 1.8;
}

.page-about .about-award {
  margin-top: clamp(28px, 3.6vw, 44px);
  border-left: 6px solid var(--lj-violet);
  background: linear-gradient(100deg, rgba(141, 107, 255, 0.16), rgba(13, 23, 40, 0.9) 58%);
  padding: clamp(20px, 3vw, 32px);
}

.page-about .about-award__tag {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--lj-violet);
}

.page-about .about-award__text {
  margin: 0;
  max-width: 70ch;
  color: var(--lj-fog);
  font-size: 15px;
  line-height: 1.9;
}

.page-about .about-award__link {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--lj-cyan);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

.page-about .about-award__link:hover,
.page-about .about-award__link:focus-visible {
  color: var(--lj-orange);
}

/* ---------- 接下来 ---------- */
.page-about .about-next {
  padding: clamp(44px, 6vw, 92px) 0 clamp(52px, 7vw, 104px);
  background:
    radial-gradient(90% 70% at 12% 0%, rgba(57, 242, 208, 0.09), transparent 62%),
    var(--lj-ink);
}

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

.page-about .about-next__list li {
  padding: clamp(16px, 2.6vw, 24px) 0;
  border-top: 1px solid var(--lj-steel);
}

.page-about .about-next__list li:last-child {
  border-bottom: 1px solid var(--lj-steel);
}

.page-about .about-next__list strong {
  display: block;
  margin-bottom: 8px;
  font-size: clamp(16px, 2vw, 19px);
  color: var(--lj-fog);
  font-weight: 700;
}

.page-about .about-next__list p {
  margin: 0;
  max-width: 64ch;
  color: var(--lj-silver);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(26px, 3.4vw, 40px);
}

.page-about a:focus-visible,
.page-about button:focus-visible {
  outline: 2px solid var(--lj-link);
  outline-offset: 3px;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-mission__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 960px) {
  .page-about .about-hero__title {
    max-width: 15ch;
  }

  .page-about .about-team__body {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.9fr);
    align-items: start;
  }

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

  .page-about .about-next__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 3vw, 44px);
  }

  .page-about .about-next__list li:nth-last-child(2) {
    border-bottom: 1px solid var(--lj-steel);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}