.page-about {
  --a-gap: clamp(64px, 9vw, 120px);
  --a-surface: rgba(22, 34, 74, 0.55);
  --a-surface-deep: rgba(11, 20, 48, 0.9);
  --a-hair: rgba(36, 49, 79, 0.9);
  display: block;
  position: relative;
  background:
    radial-gradient(1100px 520px at 84% -10%, rgba(34, 227, 192, 0.1), transparent 62%),
    radial-gradient(900px 480px at 4% 14%, rgba(46, 107, 255, 0.12), transparent 66%);
  color: var(--text);
}

.page-about__crumbs {
  padding-top: clamp(20px, 3vw, 34px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(34px, 6vw, 68px) 0 clamp(44px, 7vw, 84px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 6%;
  width: 56%;
  height: clamp(110px, 16vw, 200px);
  background: linear-gradient(105deg, rgba(22, 34, 74, 0.92), rgba(22, 34, 74, 0));
  transform: skewY(-4deg);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -18%;
  right: -14%;
  width: min(640px, 72vw);
  aspect-ratio: 1 / 1;
  background: conic-gradient(from 200deg, rgba(34, 227, 192, 0.16), rgba(46, 107, 255, 0.1) 42%, transparent 66%);
  transform: rotate(-14deg);
  pointer-events: none;
}

.page-about .about-hero .shell {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__inner {
  display: grid;
  gap: clamp(28px, 5vw, 40px);
  align-items: end;
}

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

.page-about h1 {
  margin: 16px 0 0;
  font-family: var(--font-sans);
  font-size: clamp(31px, 6.2vw, 58px);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.page-about h1 em {
  font-style: normal;
  color: var(--cyan);
  text-shadow: 0 0 22px rgba(34, 227, 192, 0.35);
}

.page-about .about-hero .lede {
  margin-top: 22px;
  max-width: 40em;
}

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

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

.page-about .about-hero__stats .stat {
  background: var(--a-surface-deep);
  padding: 16px 14px;
}

.page-about .about-hero__stats .stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(21px, 2.8vw, 29px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__stats .stat__label {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--text-dim);
}

/* ---------- 章节通用 ---------- */
.page-about .about-sec {
  position: relative;
  padding: var(--a-gap) 0;
}

.page-about .about-sec + .about-sec {
  border-top: 1px dashed var(--a-hair);
}

.page-about .about-sec .sec-head {
  margin-bottom: clamp(28px, 4vw, 46px);
}

.page-about .about-sec--flow {
  background: linear-gradient(180deg, rgba(11, 20, 48, 0) 0%, rgba(11, 20, 48, 0.72) 16%, rgba(11, 20, 48, 0.72) 84%, rgba(11, 20, 48, 0) 100%);
}

/* ---------- 两条内容线 ---------- */
.page-about .lines {
  display: grid;
  gap: 20px;
}

.page-about .line-card {
  position: relative;
  padding: clamp(22px, 3vw, 34px);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(22, 34, 74, 0.72), rgba(11, 20, 48, 0.92));
  box-shadow: var(--shadow-1);
}

.page-about .line-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  border-radius: var(--radius) var(--radius) 0 0;
  background: linear-gradient(90deg, var(--cyan), rgba(34, 227, 192, 0));
}

.page-about .line-card--lottery::before {
  background: linear-gradient(90deg, var(--flame), rgba(255, 75, 43, 0));
}

.page-about .line-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.page-about .line-card__title {
  margin: 0;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  letter-spacing: -0.01em;
}

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

.page-about .line-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text);
}

.page-about .line-list li::before {
  content: "";
  width: 6px;
  height: 6px;
  margin-top: 10px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-about .line-card--lottery .line-list li::before {
  background: var(--flame);
}

.page-about .line-list strong {
  font-weight: 700;
  color: var(--text);
}

.page-about .line-card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px dashed var(--line);
}

.page-about .line-card__links a {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border: 1px dashed var(--line);
  border-radius: 999px;
  font-size: 13.5px;
  color: var(--cyan);
  text-decoration: none;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .line-card__links a:hover,
.page-about .line-card__links a:focus-visible {
  border-color: var(--cyan);
  background: rgba(34, 227, 192, 0.08);
}

/* ---------- 图片通用 ---------- */
.page-about .about-figure {
  margin: 0 0 clamp(30px, 4vw, 46px);
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-2);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 10, 24, 0.12), rgba(5, 10, 24, 0.66));
  pointer-events: none;
}

/* ---------- 流程 ---------- */
.page-about .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
  counter-reset: flowstep;
}

.page-about .flow__item {
  counter-increment: flowstep;
  position: relative;
  padding: 26px 18px 20px;
  border-radius: 14px;
  background: var(--a-surface);
  box-shadow: var(--shadow-1);
}

.page-about .flow__item::before {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(34, 227, 192, 0));
  transform: rotate(-1.2deg);
  transform-origin: left center;
}

.page-about .flow__item::after {
  content: counter(flowstep, decimal-leading-zero);
  position: absolute;
  right: 14px;
  top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: rgba(148, 163, 196, 0.75);
}

.page-about .flow__title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
}

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

/* ---------- 团队 ---------- */
.page-about .team-bar {
  display: flex;
  gap: 4px;
  height: 46px;
}

.page-about .team-bar__seg {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-width: 0;
  padding: 0 14px;
  border-radius: 10px;
  font-size: 13.5px;
  font-weight: 700;
  white-space: nowrap;
}

.page-about .team-bar__seg--data {
  flex: 12 1 0;
  background: linear-gradient(90deg, var(--cyan), #14a88f);
  color: #04141a;
}

.page-about .team-bar__seg--edit {
  flex: 6 1 0;
  background: linear-gradient(90deg, var(--cold), #18389a);
  color: var(--text);
}

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

.page-about .team-card {
  padding: 22px;
  border-radius: 14px;
  background: var(--a-surface);
  box-shadow: var(--shadow-1);
}

.page-about .team-card h3 {
  margin: 0 0 12px;
  font-size: 17px;
  font-weight: 700;
}

.page-about .team-card p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .team-card p:last-child {
  margin-bottom: 0;
}

.page-about .team-shift {
  margin: 26px 0 0;
  padding: 20px 22px;
  border-left: 3px solid var(--cyan);
  border-radius: 0 12px 12px 0;
  background: rgba(34, 227, 192, 0.06);
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
}

/* ---------- 时间线 ---------- */
.page-about .timeline {
  display: grid;
  gap: 34px;
}

.page-about .timeline__art {
  margin: 0;
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-2);
}

.page-about .timeline__art img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-about .timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: 22px;
}

.page-about .timeline__list::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: linear-gradient(180deg, rgba(34, 227, 192, 0.85), rgba(46, 107, 255, 0.5) 55%, rgba(36, 49, 79, 0.25));
}

.page-about .tl {
  position: relative;
  padding-left: 42px;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ink-void);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 10px rgba(34, 227, 192, 0.55);
}

.page-about .tl__card {
  padding: 18px 20px;
  border-radius: 14px;
  background: var(--a-surface);
  box-shadow: var(--shadow-1);
  transition: transform 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.page-about .tl__card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2);
}

.page-about .tl__year {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-about .tl__card h3 {
  margin: 8px 0 8px;
  font-size: 17px;
  font-weight: 700;
}

.page-about .tl__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 更正 ---------- */
.page-about .correct {
  display: grid;
  gap: 24px;
}

.page-about .correct__list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: fix;
  display: grid;
  gap: 14px;
}

.page-about .correct__item {
  counter-increment: fix;
  position: relative;
  padding: 18px 20px 18px 58px;
  border-radius: 12px;
  background: var(--a-surface);
}

.page-about .correct__item::before {
  content: counter(fix);
  position: absolute;
  left: 16px;
  top: 17px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border: 1px dashed var(--cyan);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
}

.page-about .correct__item h3 {
  margin: 0 0 6px;
  font-size: 15.5px;
  font-weight: 700;
}

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

.page-about .correct__aside {
  padding: clamp(22px, 3vw, 28px);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: rgba(11, 20, 48, 0.6);
}

.page-about .correct__aside h3 {
  margin: 0 0 16px;
  font-size: 17px;
  font-weight: 700;
}

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

.page-about .correct__aside li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .correct__aside li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 10px;
  height: 2px;
  background: var(--cyan);
}

.page-about .correct__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

/* ---------- 边界 ---------- */
.page-about .bounds {
  display: grid;
  gap: 32px;
}

.page-about .about-figure--bounds {
  margin-bottom: 0;
}

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

.page-about .bounds__list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
}

.page-about .bounds__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 10px;
  height: 2px;
  background: var(--flame);
}

.page-about .bounds__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .team-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(250px, 0.65fr);
    gap: clamp(32px, 4vw, 52px);
  }

  .page-about .lines {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 32px;
    align-items: start;
  }

  .page-about .line-card--lottery {
    transform: translateY(30px);
  }

  .page-about .correct {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 36px;
    align-items: start;
  }

  .page-about .bounds {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: 44px;
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-about .flow {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px;
  }

  .page-about .flow__item {
    padding: 26px 16px 20px;
  }

  .page-about .timeline {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .timeline__art {
    position: sticky;
    top: 96px;
  }

  .page-about .tl:nth-child(even) .tl__card {
    margin-left: 24px;
  }
}

@media (max-width: 400px) {
  .page-about .team-bar__seg {
    padding: 0 10px;
    font-size: 12.5px;
  }

  .page-about .flow__item {
    padding: 24px 16px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl__card {
    transition: none;
  }

  .page-about .tl__card:hover {
    transform: none;
  }
}