.page-about {
  --about-edge: 1px solid rgba(30, 74, 61, .85);
  --about-soft: rgba(52, 245, 208, .16);
}

/* 首屏 */
.page-about .about-open {
  padding-top: clamp(20px, 3vw, 32px);
}

.page-about .about-hero {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-about .about-hero__copy {
  max-width: 62ch;
}

.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: var(--about-edge);
  border-radius: var(--radius);
  aspect-ratio: 16 / 9;
  background: var(--ink-800);
}

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

.page-about .about-hero__media::before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px solid var(--about-soft);
  border-radius: calc(var(--radius) - 6px);
  pointer-events: none;
  z-index: 2;
}

.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(91, 58, 142, .34), transparent 46%, rgba(6, 17, 13, .72));
  pointer-events: none;
}

.page-about .about-figures {
  margin-top: clamp(28px, 4.5vw, 52px);
  border: var(--about-edge);
  border-radius: var(--radius);
  overflow: hidden;
}

/* 画册式目录 + 正文 */
.page-about .about-split {
  display: grid;
  gap: clamp(24px, 4vw, 56px);
}

.page-about .about-index {
  border-top: 2px solid var(--cyan);
  padding-top: 14px;
}

.page-about .about-index__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .about-index__link {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  padding: 11px 0;
  border-bottom: 1px dashed rgba(30, 74, 61, .95);
  color: var(--paper);
  text-decoration: none;
  font-size: .95rem;
  transition: color .2s var(--ease);
}

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

.page-about .about-index__num {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-about .about-body p {
  max-width: 70ch;
  margin: 0 0 1.05em;
  color: var(--mist);
  line-height: 1.8;
}

.page-about .about-body p:first-of-type {
  color: var(--paper);
  font-size: 1.04rem;
}

.page-about .about-sub {
  max-width: 66ch;
  margin-bottom: clamp(22px, 3.5vw, 34px);
  color: var(--mist);
}

/* 版本时间线 */
.page-about .about-track {
  position: relative;
  list-style: none;
  margin: 0 0 clamp(24px, 4vw, 38px);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px 12px;
}

.page-about .about-track__item {
  position: relative;
  padding-top: 30px;
}

.page-about .about-track__item::before {
  content: "";
  position: absolute;
  top: 6px;
  left: 0;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(52, 245, 208, .1);
}

.page-about .about-track__item::after {
  display: none;
}

.page-about .about-track__year {
  display: block;
  font-size: clamp(1.15rem, 2.6vw, 1.6rem);
  color: var(--paper);
  letter-spacing: .04em;
}

.page-about .about-track__name {
  display: block;
  margin-top: 4px;
  font-size: .8rem;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-about .about-tabs .qmh-tabs__panel p {
  max-width: 68ch;
  margin: 8px 0 0;
  color: var(--mist);
  line-height: 1.8;
}

.page-about .about-figure {
  margin: clamp(24px, 4vw, 40px) 0 0;
  border: var(--about-edge);
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 2 / 1;
  background: var(--ink-800);
}

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

/* 团队与流程 */
.page-about .about-team {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-roles {
  display: grid;
  gap: 1px;
  margin: 0 0 clamp(24px, 4vw, 34px);
  padding: 0;
  background: rgba(30, 74, 61, .9);
  border: 1px solid rgba(30, 74, 61, .9);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-about .about-roles__item {
  background: var(--ink-800);
  padding: 16px 18px;
}

.page-about .about-roles__item dt {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 6px;
  color: var(--paper);
  font-weight: 600;
}

.page-about .about-roles__num {
  font-size: 1.28rem;
  color: var(--cyan);
}

.page-about .about-roles__item dd {
  margin: 0;
  color: var(--mist);
  font-size: .92rem;
  line-height: 1.7;
}

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

.page-about .about-steps__item {
  position: relative;
  padding: 16px 18px 16px 58px;
  border: var(--about-edge);
  border-radius: var(--radius-sm);
  background: var(--glass);
}

.page-about .about-steps__num {
  position: absolute;
  left: 18px;
  top: 17px;
  font-size: .92rem;
  color: var(--orange);
}

.page-about .about-steps__item p {
  margin: 6px 0 0;
  color: var(--mist);
  font-size: .93rem;
  line-height: 1.7;
}

.page-about .about-media {
  margin: 0;
  border: var(--about-edge);
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 3 / 2;
  background: var(--ink-800);
}

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

/* 覆盖方向与场景 */
.page-about .about-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 clamp(24px, 3.5vw, 34px);
  padding: 0;
}

.page-about .about-tag {
  padding: 8px 14px;
  border: 1px solid rgba(52, 245, 208, .4);
  border-radius: 999px;
  background: rgba(52, 245, 208, .06);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .1em;
}

.page-about .about-scenes {
  display: grid;
  gap: 14px;
}

.page-about .about-scene {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px;
  border: 1px solid rgba(30, 74, 61, .95);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(19, 42, 35, .92), rgba(6, 17, 13, .62));
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.page-about .about-scene:hover {
  border-color: rgba(52, 245, 208, .5);
  transform: translateY(-3px);
}

.page-about .about-scene p {
  flex: 1;
  margin: 0;
  color: var(--mist);
  font-size: .93rem;
  line-height: 1.75;
}

/* 服务范围与联系 */
.page-about .about-reach {
  border-top: 1px solid rgba(30, 74, 61, .9);
  border-bottom: 1px solid rgba(30, 74, 61, .9);
  background:
    radial-gradient(120% 140% at 10% 0%, rgba(91, 58, 142, .34), transparent 55%),
    var(--ink-800);
}

.page-about .about-contact {
  display: grid;
  gap: 1px;
  margin: 0 0 clamp(18px, 3vw, 26px);
  background: rgba(30, 74, 61, .9);
  border: 1px solid rgba(30, 74, 61, .9);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-about .about-contact__item {
  background: var(--ink-900);
  padding: 16px 18px;
}

.page-about .about-contact__key {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-about .about-contact__val {
  display: block;
  color: var(--paper);
  font-size: 1rem;
  word-break: break-word;
}

.page-about .about-side {
  align-self: start;
}

@media (min-width: 640px) {
  .page-about .about-roles {
    grid-template-columns: 1fr 1fr;
  }

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

@media (min-width: 720px) {
  .page-about .about-track {
    grid-template-columns: repeat(4, 1fr);
    gap: 0 18px;
  }

  .page-about .about-track__item::after {
    display: block;
    content: "";
    position: absolute;
    top: 11px;
    left: 13px;
    right: -18px;
    height: 1px;
    background: linear-gradient(90deg, var(--grid), transparent);
  }

  .page-about .about-track__item:last-child::after {
    display: none;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: 1.08fr .92fr;
    align-items: end;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1fr) minmax(0, .86fr);
    align-items: start;
  }

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

@media (min-width: 960px) {
  .page-about .about-split {
    grid-template-columns: 220px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-split--reach {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  }

  .page-about .about-index {
    position: sticky;
    top: 132px;
  }

  .page-about .about-media {
    position: sticky;
    top: 132px;
  }
}

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

  .page-about .about-scene:hover {
    transform: none;
  }
}
<<<END>>>