/* ============================================================
   page-about · 关于银河
   ============================================================ */

.page-about {
  background: var(--c-deep);
  color: var(--c-white);
  overflow-x: hidden;
  min-width: 0;
}

.page-about .ab-shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-inline: var(--edge);
  box-sizing: border-box;
}

.page-about .mono {
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
}

.page-about .ab-band {
  padding-block: var(--band);
  position: relative;
  border-top: 1px solid var(--c-orbit);
}

/* ---------- Hero ---------- */

.page-about .ab-hero {
  padding-block: clamp(28px, 4vw, 48px) clamp(56px, 8vw, 96px);
  position: relative;
}

.page-about .ab-hero .breadcrumb {
  margin-bottom: clamp(24px, 3.5vw, 48px);
}

.page-about .ab-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  align-items: end;
}

.page-about .ab-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--c-violet-soft);
  margin: 0 0 20px;
  text-transform: uppercase;
}

.page-about .ab-hero__title {
  font-size: clamp(2.4rem, 6vw, 5.2rem);
  font-weight: 300;
  letter-spacing: 0.05em;
  line-height: 1.06;
  margin: 0;
  color: var(--c-white);
  max-width: 16ch;
}

.page-about .ab-hero__note {
  margin: 0;
  font-size: 13px;
  line-height: 2;
  color: var(--c-grey);
  border-left: 1px solid var(--c-violet);
  padding-left: 16px;
}

.page-about .ab-hero__note .mono {
  color: var(--c-white);
  font-size: 12px;
}

.page-about .ab-hero__lede {
  margin: clamp(28px, 4vw, 48px) 0 0;
  font-size: 17px;
  line-height: 1.85;
  max-width: 36em;
  color: var(--c-white);
}

@media (min-width: 880px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: clamp(32px, 5vw, 72px);
  }
  .page-about .ab-hero__note {
    align-self: end;
  }
}

/* ---------- 章节头 ---------- */

.page-about .ab-band__head {
  display: grid;
  grid-template-columns: minmax(40px, auto) 1fr;
  gap: 10px 20px;
  align-items: baseline;
  margin-bottom: clamp(32px, 4vw, 56px);
  padding-bottom: 18px;
  border-bottom: 1px solid var(--c-orbit);
}

.page-about .ab-band__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--c-violet-soft);
}

.page-about .ab-band__title {
  font-size: clamp(1.5rem, 3vw, 2.3rem);
  font-weight: 400;
  letter-spacing: 0.04em;
  line-height: 1.3;
  margin: 0;
  color: var(--c-white);
}

/* ---------- 01 品牌自述 ---------- */

.page-about .ab-identity {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3vw, 40px);
}

.page-about .ab-identity__aside {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  line-height: 2.1;
  color: var(--c-grey);
  border-left: 1px solid var(--c-orbit);
  padding-left: 16px;
}

.page-about .ab-identity__prose p {
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.9;
  max-width: 36em;
  color: var(--c-white);
}

.page-about .ab-identity__prose p:last-child {
  margin-bottom: 0;
}

@media (min-width: 880px) {
  .page-about .ab-identity {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: clamp(32px, 4vw, 56px);
  }
}

/* ---------- 02 时间轴 ---------- */

.page-about .ab-timeline__media {
  margin: 0 0 clamp(36px, 5vw, 64px);
  overflow: hidden;
  border: 1px solid var(--c-orbit);
  position: relative;
}

.page-about .ab-timeline__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 7, 15, 0.1) 0%, rgba(5, 7, 15, 0.75) 100%);
  pointer-events: none;
}

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

.page-about .ab-tl {
  list-style: none;
  margin: 0;
  padding: 0 0 0 36px;
  position: relative;
}

.page-about .ab-tl::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--c-orbit);
}

.page-about .ab-tl__item {
  position: relative;
  padding-bottom: clamp(30px, 4vw, 52px);
}

.page-about .ab-tl__item:last-child {
  padding-bottom: 0;
}

.page-about .ab-tl__item::before {
  content: "";
  position: absolute;
  left: -36px;
  top: 5px;
  width: 15px;
  height: 15px;
  border: 1px solid var(--c-violet);
  border-radius: 50%;
  background: var(--c-deep);
  box-sizing: border-box;
  transition: background var(--t-fast) ease, box-shadow var(--t-fast) ease;
}

.page-about .ab-tl__item:hover::before,
.page-about .ab-tl__item:focus-within::before {
  background: var(--c-violet);
  box-shadow: 0 0 0 5px rgba(108, 77, 255, 0.16);
}

.page-about .ab-tl__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--c-violet-soft);
  margin-bottom: 8px;
}

.page-about .ab-tl__stage {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-grey);
  margin-bottom: 6px;
}

.page-about .ab-tl__title {
  font-size: clamp(1.08rem, 2vw, 1.35rem);
  font-weight: 400;
  letter-spacing: 0.03em;
  margin: 0 0 10px;
  color: var(--c-white);
}

.page-about .ab-tl__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--c-grey);
  max-width: 33em;
}

@media (min-width: 880px) {
  .page-about .ab-tl {
    padding-left: 160px;
  }
  .page-about .ab-tl::before {
    left: 131px;
  }
  .page-about .ab-tl__item::before {
    left: -36px;
  }
  .page-about .ab-tl__year {
    position: absolute;
    left: -160px;
    top: 4px;
    width: 120px;
    text-align: right;
    margin-bottom: 0;
    font-size: 14px;
  }
}

/* ---------- 03 团队与分工 ---------- */

.page-about .ab-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
}

.page-about .ab-team__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .ab-team__cell {
  position: relative;
  padding: clamp(20px, 2.6vw, 28px);
  background: var(--c-deep-2);
  border: 1px solid var(--c-orbit);
  outline: none;
  transition: border-color var(--t-fast) ease, background var(--t-fast) ease;
}

.page-about .ab-team__cell:hover,
.page-about .ab-team__cell:focus,
.page-about .ab-team__cell:focus-visible {
  border-color: var(--c-violet-soft);
  background: var(--c-glass);
}

.page-about .ab-team__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 300;
  letter-spacing: 0.06em;
  line-height: 1;
  color: var(--c-violet);
  margin-bottom: 14px;
}

.page-about .ab-team__title {
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  margin: 0 0 10px;
  color: var(--c-white);
}

.page-about .ab-team__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--c-grey);
}

.page-about .ab-team__figure {
  margin: 0;
}

.page-about .ab-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--c-orbit);
}

.page-about .ab-team__caption {
  margin-top: 14px;
  padding-left: 12px;
  border-left: 1px solid var(--c-orbit);
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--c-grey);
}

@media (min-width: 880px) {
  .page-about .ab-team {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: clamp(32px, 5vw, 64px);
  }
  .page-about .ab-team__grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .page-about .ab-team__grid::after {
    content: "";
    position: absolute;
    top: 50%;
    left: calc(50% - 12px);
    width: 24px;
    height: 1px;
    background: var(--c-violet);
  }
}

/* ---------- 04 维护节奏 ---------- */

.page-about .ab-rhythm {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--c-orbit);
}

.page-about .ab-rhythm__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: clamp(22px, 3vw, 32px) 0;
  border-bottom: 1px solid var(--c-orbit);
}

.page-about .ab-rhythm__when {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--c-nebula);
}

.page-about .ab-rhythm__body h3 {
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  margin: 0 0 10px;
  color: var(--c-white);
}

.page-about .ab-rhythm__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--c-grey);
  max-width: 36em;
}

@media (min-width: 760px) {
  .page-about .ab-rhythm__item {
    grid-template-columns: 130px minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }
  .page-about .ab-rhythm__when {
    padding-top: 4px;
  }
}

/* ---------- 05 黑龙江夜空 ---------- */

.page-about .ab-sky {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 44px);
}

.page-about .ab-sky__figure {
  margin: 0;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--c-orbit);
}

.page-about .ab-sky__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(5, 7, 15, 0.88) 0%, rgba(5, 7, 15, 0.24) 52%, rgba(5, 7, 15, 0) 100%);
  pointer-events: none;
}

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

.page-about .ab-sky__prose p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--c-white);
  max-width: 36em;
}

.page-about .ab-sky__prose p:last-child {
  margin-bottom: 0;
}

@media (min-width: 880px) {
  .page-about .ab-sky {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: clamp(32px, 4vw, 56px);
  }
}

/* ---------- 06 现在的银河中文站 ---------- */

.page-about .ab-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 2.5vw, 28px);
  margin: 0 0 clamp(30px, 4vw, 44px);
  padding: 0;
}

.page-about .ab-stats__cell {
  border-top: 1px solid var(--c-violet);
  padding-top: 20px;
}

.page-about .ab-stats__cell dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--c-grey);
  margin-bottom: 14px;
}

.page-about .ab-stats__cell dd {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  font-weight: 300;
  letter-spacing: 0.04em;
  line-height: 1;
  color: var(--c-white);
}

.page-about .ab-stats__cell dd span {
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-grey);
}

.page-about .ab-now__text {
  margin: 0 0 clamp(28px, 4vw, 40px);
  font-size: 16px;
  line-height: 1.9;
  color: var(--c-white);
  max-width: 36em;
}

.page-about .ab-now__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 760px) {
  .page-about .ab-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 降级动效 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-tl__item::before,
  .page-about .ab-team__cell {
    transition: none;
  }
}
<<<END>>>