.page-about {
  --about-gap: 1.25rem;
  --about-line: rgba(53, 242, 194, .16);
}

.page-about .about-hero {
  padding-top: clamp(1rem, 3vw, 2rem);
}

.page-about .about-hero-frame {
  position: relative;
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: clamp(1.5rem, 4vw, 3.25rem);
  border-radius: var(--radius-xl);
  border: 1px solid var(--about-line);
  background:
    radial-gradient(120% 90% at 8% 0%, rgba(53, 242, 194, .18), transparent 55%),
    radial-gradient(90% 80% at 102% 104%, rgba(255, 90, 54, .14), transparent 62%),
    linear-gradient(160deg, var(--stand) 0%, var(--night) 78%);
  overflow: hidden;
}

.page-about .about-hero-copy h1 {
  font-family: var(--font-head);
  font-size: clamp(2.3rem, 7.5vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -.015em;
  color: var(--paper);
  margin: .55rem 0 1rem;
}

.page-about .about-hero-copy .lede {
  max-width: 34em;
  color: var(--grass);
}

.page-about .about-hero-actions {
  margin-top: 1.75rem;
}

.page-about .about-hero-panel {
  align-self: end;
  padding: 1.25rem 1.35rem 1.35rem;
  border-radius: var(--radius-lg);
  border: 1px dashed var(--about-line);
  background: linear-gradient(150deg, rgba(3, 10, 7, .55), rgba(18, 61, 44, .35));
}

.page-about .about-hero-panel-title {
  margin: 0 0 1rem;
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--neon);
}

.page-about .about-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .9rem 1rem;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: .2rem;
  padding-left: .75rem;
  border-left: 2px solid rgba(53, 242, 194, .28);
}

.page-about .about-stat .stat-value {
  font-size: clamp(1.5rem, 3.4vw, 2rem);
  line-height: 1.05;
  color: var(--paper);
}

.page-about .about-stat .stat-label {
  font-size: .78rem;
  color: var(--grass);
}

.page-about .about-jump {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 1.5rem;
}

.page-about .about-jump a {
  display: inline-block;
  padding: .42rem .95rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--about-line);
  color: var(--grass);
  font-size: .82rem;
  text-decoration: none;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}

.page-about .about-jump a:hover,
.page-about .about-jump a:focus-visible {
  background: var(--neon);
  border-color: var(--neon);
  color: var(--night);
}

.page-about .media-frame {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-xl);
  border: 1px solid var(--about-line);
  background: linear-gradient(150deg, var(--board), var(--night));
}

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

.page-about .media-frame figcaption {
  padding: .8rem 1.1rem 1rem;
  font-size: .82rem;
  color: var(--grass);
  border-top: 1px solid rgba(53, 242, 194, .1);
}

/* 品牌主张 */
.page-about .about-manifesto-grid {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .about-manifesto-media {
  align-self: start;
}

.page-about .about-manifesto-notes {
  display: grid;
  gap: 1rem;
}

.page-about .about-note {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 1rem;
  padding: 1.15rem 1.25rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(53, 242, 194, .1);
  border-left: 3px solid var(--neon);
  background: linear-gradient(120deg, rgba(18, 61, 44, .75), rgba(7, 26, 18, .55));
}

.page-about .about-note-index {
  margin: 0;
  font-size: .95rem;
  color: var(--neon-cool);
  padding-top: .15rem;
}

.page-about .about-note h3 {
  margin: 0 0 .45rem;
  font-family: var(--font-head);
  font-size: clamp(1.1rem, 2.2vw, 1.45rem);
  color: var(--paper);
}

.page-about .about-note p {
  margin: 0;
  color: var(--grass);
  font-size: .96rem;
  line-height: 1.75;
}

/* 版本演进 */
.page-about .about-evolution {
  background: linear-gradient(180deg, transparent, rgba(13, 43, 32, .45), transparent);
}

.page-about .about-evolution-media {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
}

.page-about .about-timeline {
  list-style: none;
  margin: clamp(1.75rem, 4vw, 2.75rem) 0 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 31px;
  top: 10px;
  bottom: 34px;
  width: 1px;
  background: linear-gradient(180deg, var(--neon), rgba(53, 242, 194, .06));
}

.page-about .about-timeline .timeline-item {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 1rem;
  padding-bottom: 1.25rem;
  position: relative;
}

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

.page-about .about-timeline .timeline-time {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--night);
  border: 1px solid rgba(168, 184, 174, .35);
  color: var(--grass);
  font-size: .95rem;
  transition: color .35s ease, border-color .35s ease, box-shadow .35s ease;
}

.page-about .about-timeline .timeline-item[data-lit] .timeline-time {
  color: var(--night);
  background: var(--neon);
  border-color: var(--neon);
  box-shadow: 0 0 0 5px rgba(53, 242, 194, .1);
}

.page-about .about-evo-body {
  padding: 1.15rem 1.3rem 1.25rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(53, 242, 194, .1);
  background: linear-gradient(150deg, rgba(18, 61, 44, .8), rgba(13, 43, 32, .5));
}

.page-about .about-evo-body h3 {
  margin: 0 0 .45rem;
  font-family: var(--font-head);
  font-size: clamp(1.15rem, 2.4vw, 1.6rem);
  letter-spacing: .01em;
  color: var(--paper);
}

.page-about .about-evo-body p {
  margin: 0;
  color: var(--grass);
  font-size: .96rem;
  line-height: 1.75;
}

/* 版本对比 */
.page-about .about-compare-grid {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
}

.page-about .about-compare-col {
  padding: 1.5rem 1.4rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(53, 242, 194, .12);
  background: linear-gradient(160deg, rgba(18, 61, 44, .82), rgba(7, 26, 18, .5));
}

.page-about .about-compare-col.is-beta {
  background:
    radial-gradient(90% 90% at 100% 0%, rgba(255, 138, 61, .14), transparent 60%),
    linear-gradient(160deg, rgba(18, 61, 44, .82), rgba(7, 26, 18, .5));
}

.page-about .about-compare-col h3 {
  margin: .85rem 0 .5rem;
  font-family: var(--font-head);
  font-size: clamp(1.2rem, 2.6vw, 1.7rem);
  color: var(--paper);
}

.page-about .about-compare-lead {
  margin: 0 0 1rem;
  color: var(--grass);
  font-size: .95rem;
  line-height: 1.7;
}

.page-about .about-compare-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .7rem;
}

.page-about .about-compare-list li {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: .75rem;
  align-items: baseline;
  padding-top: .7rem;
  border-top: 1px dashed rgba(53, 242, 194, .14);
  color: var(--paper);
  font-size: .92rem;
  line-height: 1.65;
}

.page-about .about-compare-list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-compare-list .mono {
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--neon);
}

.page-about .about-compare-media {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
}

.page-about .about-compare-note {
  margin: 1.25rem 0 0;
  padding-left: 1rem;
  border-left: 2px solid var(--signal);
  color: var(--grass);
  font-size: .92rem;
  line-height: 1.75;
}

.page-about .about-compare-note a {
  color: var(--neon-cool);
}

/* 团队 */
.page-about .about-team-filter {
  margin-top: clamp(1.25rem, 2.5vw, 1.75rem);
}

.page-about .about-team-grid {
  margin-top: 1.35rem;
}

.page-about .about-team-card {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(53, 242, 194, .11);
  background: linear-gradient(155deg, rgba(18, 61, 44, .78), rgba(7, 26, 18, .55));
  padding: 1.35rem 1.3rem 1.45rem;
}

.page-about .about-team-card .card-meta {
  margin: 0 0 .6rem;
  font-size: .72rem;
  letter-spacing: .2em;
  color: var(--neon);
}

.page-about .about-team-card .card-title {
  margin: 0 0 .6rem;
  font-family: var(--font-head);
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  color: var(--paper);
}

.page-about .about-team-card .card-body {
  margin: 0;
  color: var(--grass);
  font-size: .94rem;
  line-height: 1.75;
}

/* 服务与备案 */
.page-about .about-service-shell {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.25rem);
  margin-top: clamp(1.5rem, 3vw, 2rem);
}

.page-about .about-service-main h2 {
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 3.6vw, 2.4rem);
  color: var(--paper);
  margin: .5rem 0 .85rem;
}

.page-about .about-service-main > p {
  color: var(--grass);
  line-height: 1.8;
  max-width: 44em;
}

.page-about .about-service-list {
  list-style: none;
  margin: 1.35rem 0 0;
  padding: 0;
  display: grid;
  gap: .85rem;
}

.page-about .about-service-list li {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: .85rem;
  padding: 1rem 1.15rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(53, 242, 194, .1);
  background: linear-gradient(120deg, rgba(18, 61, 44, .6), rgba(7, 26, 18, .35));
  color: var(--paper);
  font-size: .93rem;
  line-height: 1.65;
}

.page-about .about-service-list .mono {
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--neon-cool);
}

.page-about .about-service-aside {
  border-radius: var(--radius-xl);
  border: 1px dashed rgba(53, 242, 194, .3);
  background: linear-gradient(165deg, rgba(13, 43, 32, .9), rgba(3, 10, 7, .65));
  padding: 1.5rem 1.4rem 1.6rem;
  align-self: start;
}

.page-about .about-service-label {
  margin: 0 0 1rem;
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--neon);
}

.page-about .about-service-icp {
  margin: 0 0 1.1rem;
  font-size: 1.05rem;
  color: var(--paper);
  word-break: break-all;
}

.page-about .about-service-dl {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: .55rem;
}

.page-about .about-service-dl dt {
  font-size: .74rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--grass);
}

.page-about .about-service-dl dd {
  margin: 0 0 .55rem;
  color: var(--paper);
  font-size: .93rem;
  word-break: break-all;
}

.page-about .about-service-dl dd:last-child {
  margin-bottom: 0;
}

.page-about .about-service-hint {
  margin: 1.1rem 0 1.25rem;
  padding-top: .9rem;
  border-top: 1px dashed rgba(53, 242, 194, .16);
  color: var(--grass);
  font-size: .86rem;
  line-height: 1.7;
}

/* 结尾 */
.page-about .about-cta-board {
  border-radius: var(--radius-xl);
  padding: clamp(1.75rem, 4vw, 3rem);
  border: 1px solid rgba(53, 242, 194, .16);
  background:
    radial-gradient(100% 130% at 0% 0%, rgba(255, 90, 54, .2), transparent 58%),
    radial-gradient(80% 100% at 100% 100%, rgba(53, 242, 194, .16), transparent 60%),
    linear-gradient(140deg, var(--board), var(--night));
}

.page-about .about-cta-board h2 {
  margin: .5rem 0 .85rem;
  font-family: var(--font-head);
  font-size: clamp(1.7rem, 4vw, 2.8rem);
  color: var(--paper);
}

.page-about .about-cta-board p {
  margin: 0 0 1.5rem;
  color: var(--grass);
  max-width: 42em;
  line-height: 1.8;
}

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

@media (min-width: 900px) {
  .page-about .about-hero-frame {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-about .about-manifesto-grid {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    align-items: start;
  }

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

  .page-about .about-compare-col.is-client {
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    border-right: 1px dashed rgba(53, 242, 194, .3);
  }

  .page-about .about-compare-col.is-beta {
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    border-left: 0;
  }

  .page-about .about-service-shell {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, .85fr);
    align-items: start;
  }

  .page-about .about-timeline .timeline-item {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 1.5rem;
    padding-bottom: 1.5rem;
  }

  .page-about .about-timeline::before {
    left: 41px;
  }

  .page-about .about-timeline .timeline-time {
    width: 84px;
    height: 84px;
    font-size: 1.15rem;
  }
}

@media (min-width: 1080px) {
  .page-about .about-manifesto-notes {
    gap: 1.15rem;
  }

  .page-about .about-evo-body {
    padding: 1.35rem 1.6rem 1.45rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition: none !important;
    animation: none !important;
  }
}