.page-about {
  --about-rail: 88px;
  --about-band-gap: clamp(48px, 7vw, 92px);
  --about-body: #CFC9EC;
  display: block;
  padding-bottom: clamp(48px, 7vw, 88px);
}

.page-about .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 顶部：面包屑与标题区 ---------- */
.page-about .about-top {
  padding-top: clamp(24px, 4vw, 44px);
  padding-bottom: clamp(30px, 4.5vw, 56px);
}

.page-about .breadcrumbs {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--muted);
}

.page-about .breadcrumbs li {
  display: flex;
  align-items: center;
}

.page-about .breadcrumbs li + li::before {
  content: "/";
  margin: 0 10px;
  color: rgba(169, 163, 207, .45);
}

.page-about .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--neon-hi);
  border-bottom-color: var(--neon-hi);
}

.page-about .breadcrumbs [aria-current="page"] {
  color: var(--neon-hi);
}

.page-about .about-hero {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 4vw, 52px);
  overflow: hidden;
  background:
    radial-gradient(120% 145% at 88% -12%, rgba(168, 85, 247, .32), transparent 62%),
    radial-gradient(90% 120% at 2% 110%, rgba(45, 226, 230, .16), transparent 58%),
    linear-gradient(158deg, var(--indigo), var(--panel) 68%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: auto -60px -80px auto;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 180, 84, .22), transparent 68%);
  pointer-events: none;
}

.page-about .about-hero h1 {
  position: relative;
  margin: 12px 0 18px;
  font-family: var(--font-sans);
  font-size: clamp(28px, 6vw, 46px);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.15;
  color: var(--text);
  text-shadow: 0 0 28px rgba(168, 85, 247, .35);
  max-width: 22em;
}

.page-about .lede {
  position: relative;
  margin: 0;
  max-width: 40em;
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--about-body);
}

.page-about .about-toc {
  position: relative;
  list-style: none;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 10px;
}

.page-about .about-toc a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: rgba(7, 7, 26, .5);
  color: var(--text);
  font-size: 14px;
  text-decoration: none;
  transition: border-color .18s ease, background .18s ease, color .18s ease;
}

.page-about .about-toc a:hover,
.page-about .about-toc a:focus-visible {
  border-color: var(--line-strong);
  background: rgba(168, 85, 247, .14);
  color: var(--neon-hi);
}

.page-about .about-toc .mono {
  font-size: 12px;
  color: var(--gold-soft);
}

/* ---------- 编号章节 ---------- */
.page-about .about-flow {
  display: block;
}

.page-about .about-band {
  display: grid;
  grid-template-columns: var(--about-rail) minmax(0, 1fr);
  column-gap: clamp(18px, 3vw, 40px);
  padding: var(--about-band-gap) 0;
  border-top: 1px solid var(--line);
}

.page-about .about-band:first-child {
  border-top: 0;
  padding-top: clamp(28px, 4vw, 48px);
}

.page-about .about-band__no {
  position: sticky;
  top: calc(var(--header-offset) + 16px);
  align-self: start;
  font-family: var(--font-mono);
  font-size: clamp(28px, 4.4vw, 42px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--neon);
  text-shadow: 0 0 22px rgba(168, 85, 247, .55);
}

.page-about .about-band__body {
  min-width: 0;
}

.page-about .about-band h2 {
  margin: 0 0 18px;
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.22;
  color: var(--text);
}

.page-about .about-band__body > p {
  margin: 0 0 16px;
  max-width: 38em;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--about-body);
}

.page-about .about-band__body > p a {
  color: var(--neon-hi);
  text-decoration: none;
  border-bottom: 1px solid rgba(192, 132, 252, .5);
}

.page-about .about-band__body > p a:hover,
.page-about .about-band__body > p a:focus-visible {
  color: var(--gold-soft);
  border-bottom-color: var(--gold-soft);
}

/* ---------- 01 六类玩法 ---------- */
.page-about .about-modes {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 12px;
}

.page-about .about-modes li {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(28, 26, 69, .92), rgba(18, 18, 46, .86));
  transition: border-color .18s ease, box-shadow .18s ease;
}

.page-about .about-modes li:hover {
  border-color: var(--line-strong);
  box-shadow: 0 0 0 1px rgba(192, 132, 252, .18), 0 10px 28px -16px rgba(168, 85, 247, .8);
}

.page-about .about-modes p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 02 版本 ---------- */
.page-about .about-ver-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 20px;
}

.page-about .about-ver-nav a {
  padding: 7px 16px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: rgba(7, 7, 26, .55);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--muted);
  text-decoration: none;
  transition: border-color .18s ease, color .18s ease, background .18s ease;
}

.page-about .about-ver-nav a:hover,
.page-about .about-ver-nav a:focus-visible {
  border-color: var(--line-strong);
  background: rgba(168, 85, 247, .16);
  color: var(--neon-hi);
}

.page-about .about-versions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 14px;
  margin-top: 6px;
}

.page-about .about-ver {
  position: relative;
  padding: 22px 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(165deg, rgba(28, 26, 69, .95), rgba(18, 18, 46, .9));
  scroll-margin-top: calc(var(--header-offset) + 24px);
  transition: border-color .18s ease, box-shadow .18s ease;
}

.page-about .about-ver::before {
  content: "";
  position: absolute;
  top: 0;
  left: 22px;
  width: 46px;
  height: 3px;
  border-radius: var(--pill);
  background: linear-gradient(90deg, var(--neon), var(--cyan));
}

.page-about .about-ver:hover {
  border-color: var(--line-strong);
  box-shadow: 0 0 22px -10px rgba(168, 85, 247, .75);
}

.page-about .about-ver__code {
  margin: 10px 0 0;
  font-size: 12.5px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-about .about-ver h3 {
  margin: 8px 0 10px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-about .about-ver p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 03 指标 ---------- */
.page-about .about-metrics {
  margin: 22px 0 20px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .about-metrics > div {
  padding: 18px 20px;
  background: rgba(18, 18, 46, .96);
}

.page-about .about-metrics dt {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-about .about-metrics dd {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 04 团队 ---------- */
.page-about .about-team-figure {
  margin: 0 0 22px;
}

.page-about .about-team-figure .media-frame__img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.page-about .media-frame {
  position: relative;
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-about .media-frame__caption {
  padding: 12px 18px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-ratio {
  margin: 26px 0 22px;
  padding: 22px 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(28, 26, 69, .9), rgba(18, 18, 46, .86));
}

.page-about .about-ratio figcaption {
  margin-bottom: 16px;
  color: var(--gold-soft);
}

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

.page-about .about-ratio__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  font-size: 14px;
  color: var(--text);
}

.page-about .about-ratio__head .mono {
  font-size: 13.5px;
  color: var(--gold);
}

.page-about .about-ratio__track {
  display: block;
  height: 8px;
  border-radius: var(--pill);
  background: rgba(7, 7, 26, .8);
  overflow: hidden;
}

.page-about .about-bar {
  display: block;
  height: 100%;
  border-radius: var(--pill);
  box-shadow: 0 0 14px -2px rgba(168, 85, 247, .6);
}

.page-about .about-bar--dev {
  width: 37.5%;
  background: linear-gradient(90deg, var(--neon), var(--neon-hi));
}

.page-about .about-bar--cs {
  width: 30%;
  background: linear-gradient(90deg, var(--cyan), #5BE9EC);
}

.page-about .about-bar--ops {
  width: 32.5%;
  background: linear-gradient(90deg, var(--gold), var(--gold-soft));
}

/* ---------- 05 内容板块 ---------- */
.page-about .about-sections {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .about-sections a {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  background: rgba(18, 18, 46, .96);
  text-decoration: none;
  transition: background .18s ease;
}

.page-about .about-sections a:hover,
.page-about .about-sections a:focus-visible {
  background: rgba(168, 85, 247, .14);
}

.page-about .about-sections__name {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--neon-hi);
}

.page-about .about-sections__desc {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 06 运营地 ---------- */
.page-about .about-city {
  position: relative;
  margin: 0 0 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--panel);
}

.page-about .about-city img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

.page-about .about-city figcaption {
  padding: 12px 18px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-contact {
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .about-contact > div {
  padding: 18px 20px;
  background: rgba(18, 18, 46, .96);
}

.page-about .about-contact dt {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--gold-soft);
}

.page-about .about-contact dd {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text);
  word-break: break-word;
}

/* ---------- 07 去向 ---------- */
.page-about .about-band--last {
  padding-bottom: clamp(16px, 3vw, 36px);
}

.page-about .about-goals {
  list-style: none;
  margin: 22px 0 26px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.page-about .about-goals li {
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(28, 26, 69, .92), rgba(18, 18, 46, .86));
  transition: border-color .18s ease, box-shadow .18s ease;
}

.page-about .about-goals li:hover {
  border-color: var(--line-strong);
  box-shadow: 0 0 22px -12px rgba(45, 226, 230, .8);
}

.page-about .about-goals h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-about .about-goals p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-goals a {
  color: var(--neon-hi);
  text-decoration: none;
  border-bottom: 1px solid rgba(192, 132, 252, .5);
}

.page-about .about-goals a:hover,
.page-about .about-goals a:focus-visible {
  color: var(--gold-soft);
  border-bottom-color: var(--gold-soft);
}

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

/* ---------- 窄屏 ---------- */
@media (max-width: 720px) {
  .page-about .about-band {
    grid-template-columns: 1fr;
    row-gap: 14px;
    padding: clamp(34px, 8vw, 52px) 0;
  }

  .page-about .about-band__no {
    position: static;
    font-size: 26px;
  }

  .page-about .about-band__body > p {
    font-size: 16px;
  }

  .page-about .about-hero h1 {
    max-width: none;
  }

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

  .page-about .about-ver::before {
    left: 20px;
  }
}

@media (max-width: 400px) {
  .page-about .about-hero {
    padding: 20px 18px 24px;
  }

  .page-about .about-modes li,
  .page-about .about-ver,
  .page-about .about-goals li {
    padding: 16px 16px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-toc a,
  .page-about .about-modes li,
  .page-about .about-ver,
  .page-about .about-sections a,
  .page-about .about-goals li {
    transition: none;
  }
}