.page-about {
  --about-line: 1px solid var(--track);
  --about-glow: 0 18px 40px -24px rgba(123, 92, 255, .75);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: 20px 0 8px;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 18px;
}

.page-about .about-hero__frame {
  position: relative;
  overflow: hidden;
  padding: 28px 18px 26px;
  border: var(--about-line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(123, 92, 255, .30), transparent 62%),
    radial-gradient(90% 80% at -10% 110%, rgba(34, 224, 214, .14), transparent 60%),
    var(--panel-2);
}

.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 8px;
  background: repeating-linear-gradient(90deg, var(--track) 0 1px, transparent 1px 20px);
  opacity: .8;
  pointer-events: none;
}

.page-about .about-hero__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 8.4vw, 58px);
  line-height: 1.04;
  letter-spacing: -.02em;
  color: var(--paper);
  overflow-wrap: break-word;
}

.page-about .about-hero__lede {
  max-width: 62ch;
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  background: var(--track);
  border: var(--about-line);
  border-radius: 10px;
  overflow: hidden;
}

.page-about .about-stats li {
  padding: 14px 16px;
  background: var(--ink-2);
}

.page-about .about-stats__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  letter-spacing: .02em;
  color: var(--gold);
}

.page-about .about-stats__label {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist);
}

/* ---------- 段落通用 ---------- */
.page-about .about-section {
  padding: 46px 0 0;
}

.page-about .about-head {
  display: grid;
  gap: 10px;
  max-width: 66ch;
  margin-bottom: 26px;
}

.page-about .about-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 6vw, 40px);
  line-height: 1.12;
  letter-spacing: -.01em;
  color: var(--paper);
  overflow-wrap: break-word;
}

.page-about .about-head__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-head__note a,
.page-about .about-taste__tail a,
.page-about .about-version__tail a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 214, .45);
}

.page-about .about-head__note a:hover,
.page-about .about-taste__tail a:hover,
.page-about .about-version__tail a:hover {
  color: var(--paper);
  border-bottom-color: var(--violet);
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 0 0 30px;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: var(--about-line);
  border-radius: var(--radius);
  background: var(--panel);
}

.page-about .about-figure figcaption,
.page-about .about-shot figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
  letter-spacing: .01em;
}

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

.page-about .about-shot img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: var(--about-line);
  border-radius: var(--radius);
  background: var(--panel);
}

.page-about .about-shot--square img {
  aspect-ratio: 1 / 1;
}

/* ---------- 时间轴 ---------- */
.page-about .about-tl {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-tl__item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding-bottom: 22px;
}

.page-about .about-tl__scale {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-about .about-tl__year {
  font-family: var(--font-mono);
  font-size: 19px;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-about .about-tl__mark {
  width: 11px;
  height: 11px;
  background: var(--gold);
  box-shadow: 0 0 14px rgba(245, 196, 90, .55);
}

.page-about .about-tl__body {
  position: relative;
  padding: 18px 16px 18px;
  border: var(--about-line);
  border-radius: var(--radius);
  background: linear-gradient(155deg, rgba(16, 26, 54, .95), rgba(10, 16, 40, .92));
  transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}

.page-about .about-tl__body:hover,
.page-about .about-tl__body:focus-within {
  transform: translateY(-4px);
  border-color: var(--violet);
  box-shadow: var(--about-glow);
}

.page-about .about-tl__body:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-about .about-tl__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-tl__title {
  margin: 8px 0 0;
  font-size: 18px;
  line-height: 1.45;
  color: var(--paper);
}

.page-about .about-tl__text {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-tl__more {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .24s ease;
}

.page-about .about-tl__more > div {
  overflow: hidden;
}

.page-about .about-tl__more p {
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--track);
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .about-tl__body:hover .about-tl__more,
.page-about .about-tl__body:focus-within .about-tl__more {
  grid-template-rows: 1fr;
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  row-gap: 26px;
}

.page-about .about-quote {
  margin: 18px 0 0;
  padding: 18px 16px 20px;
  border-left: 2px solid var(--panel);
  border-radius: 0 10px 10px 0;
  background: var(--paper);
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.8;
}

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

.page-about .about-crews__item {
  padding: 18px 16px 20px;
  border: var(--about-line);
  border-left: 3px solid var(--violet-deep);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: linear-gradient(160deg, rgba(16, 26, 54, .9), rgba(7, 11, 26, .96));
  transition: transform .22s ease, border-left-color .22s ease;
}

.page-about .about-crews__item:hover {
  transform: translateY(-3px);
  border-left-color: var(--cyan);
}

.page-about .about-crews__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-about .about-crews__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--gold);
}

.page-about .about-crews__name {
  margin: 0;
  font-size: 18px;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-crews__text {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-crews__out {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--cyan);
}

/* ---------- 五道筛选 ---------- */
.page-about .about-sieve__grid {
  row-gap: 26px;
}

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

.page-about .about-steps__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 12px;
  padding: 16px 14px;
  border: 1px solid rgba(58, 44, 110, .55);
  border-radius: 12px;
  background: rgba(10, 16, 40, .72);
  transition: border-color .2s ease, background-color .2s ease;
}

.page-about .about-steps__item:hover {
  border-color: var(--cyan);
  background: rgba(16, 26, 54, .92);
}

.page-about .about-steps__num {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--violet);
  padding-top: 2px;
}

.page-about .about-steps__name {
  margin: 0;
  font-size: 16px;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .about-steps__item p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 版本 ---------- */
.page-about .about-version__layout {
  display: grid;
  gap: 20px;
}

.page-about .about-version__paper {
  padding: 20px 18px 22px;
  border-left: 3px solid var(--panel);
  border-radius: 0 12px 12px 0;
  background: var(--paper);
  color: var(--ink-2);
}

.page-about .about-version__quote {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
}

.page-about .about-version__sign {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .03em;
  color: var(--violet-deep);
}

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

.page-about .about-fields li {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid rgba(58, 44, 110, .55);
}

.page-about .about-fields li:first-child {
  border-top: 1px solid rgba(58, 44, 110, .55);
}

.page-about .about-fields__k {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-about .about-fields li p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .about-version__tail {
  margin: 22px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 节奏 ---------- */
.page-about .about-cadence__grid {
  display: grid;
  gap: 16px;
}

.page-about .about-cadence__panel {
  position: relative;
  padding: 22px 18px 24px;
  border: var(--about-line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(16, 26, 54, .95), rgba(7, 11, 26, .98));
}

.page-about .about-cadence__panel::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan), transparent 70%);
}

.page-about .about-cadence__panel--alt::before {
  background: linear-gradient(180deg, var(--gold), transparent 70%);
}

.page-about .about-cadence__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-about .about-cadence__panel--alt .about-cadence__kicker {
  color: var(--gold);
}

.page-about .about-cadence__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .about-cadence__panel p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 收录偏好 ---------- */
.page-about .about-taste__grid {
  row-gap: 22px;
}

.page-about .about-taste__col {
  padding: 20px 18px 22px;
  border: var(--about-line);
  border-radius: var(--radius);
  background: rgba(10, 16, 40, .68);
}

.page-about .about-taste__col--muted {
  background: rgba(7, 11, 26, .82);
}

.page-about .about-taste__title {
  margin: 0 0 14px;
  font-size: 17px;
  line-height: 1.4;
  color: var(--paper);
}

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

.page-about .about-taste__list li {
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-taste__list .tag {
  margin-right: 8px;
}

.page-about .about-taste__tail {
  margin: 22px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  padding: 46px 0 40px;
}

.page-about .about-cta__inner {
  padding: 26px 18px 28px;
  border: var(--about-line);
  border-radius: var(--radius);
  background:
    radial-gradient(110% 130% at 100% 0%, rgba(123, 92, 255, .22), transparent 60%),
    var(--panel-2);
}

.page-about .about-cta__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 6vw, 34px);
  line-height: 1.15;
  color: var(--paper);
}

.page-about .about-cta__links {
  display: grid;
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-cta__links .btn {
  width: 100%;
  text-align: center;
  justify-content: center;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-hero__frame {
    padding: 34px 30px 30px;
  }

  .page-about .about-version__layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }

  .page-about .about-cadence__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-cadence__panel--alt {
    transform: rotate(-.6deg);
  }

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

  .page-about .about-cta__links .btn {
    width: auto;
  }
}

@media (min-width: 900px) {
  .page-about .about-section {
    padding-top: 68px;
  }

  .page-about .about-hero {
    padding-top: 28px;
  }

  .page-about .about-head {
    margin-bottom: 34px;
  }

  .page-about .about-tl__item {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 26px;
    padding-bottom: 26px;
  }

  .page-about .about-tl::before {
    content: "";
    position: absolute;
    top: 8px;
    bottom: 20px;
    left: 103px;
    width: 1px;
    background: linear-gradient(180deg, var(--track), rgba(58, 44, 110, .18));
  }

  .page-about .about-tl__scale {
    justify-content: flex-start;
    padding-top: 16px;
    gap: 8px;
  }

  .page-about .about-tl__body {
    padding: 20px 22px 22px;
  }

  .page-about .about-team__grid,
  .page-about .about-sieve__grid {
    align-items: start;
  }

  .page-about .about-steps__item:nth-child(2) {
    margin-left: 12px;
  }

  .page-about .about-steps__item:nth-child(3) {
    margin-left: 24px;
  }

  .page-about .about-steps__item:nth-child(4) {
    margin-left: 36px;
  }

  .page-about .about-steps__item:nth-child(5) {
    margin-left: 48px;
  }

  .page-about .about-version__paper {
    padding: 26px 24px 28px;
  }

  .page-about .about-fields li {
    grid-template-columns: 96px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-tl__body,
  .page-about .about-crews__item,
  .page-about .about-tl__more {
    transition: none;
  }

  .page-about .about-tl__body:hover,
  .page-about .about-tl__body:focus-within,
  .page-about .about-crews__item:hover {
    transform: none;
  }

  .page-about .about-cadence__panel--alt {
    transform: none;
  }
}