.page-about {
  background: var(--space-bg);
  color: var(--text);
}

.page-about .breadcrumb {
  margin-block: clamp(1.25rem, 3vw, 2rem) clamp(0.25rem, 1vw, 0.75rem);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  padding-block: clamp(0.75rem, 2vw, 1.25rem) clamp(2.5rem, 6vw, 4.5rem);
}

.page-about .about-hero__orbit {
  position: absolute;
  top: -12%;
  right: 0;
  width: min(480px, 54vw);
  height: auto;
  pointer-events: none;
  opacity: 0.45;
  z-index: 0;
}

.page-about .about-hero__lede {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__title {
  margin: 0.75rem 0 1.15rem;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.95rem, 6.2vw, 4rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.page-about .about-hero__text {
  margin: 0 0 1.6rem;
  max-width: 56ch;
  font-size: clamp(1rem, 1.6vw, 1.08rem);
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.page-about .about-hero__media {
  position: relative;
  z-index: 1;
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

@media (min-width: 960px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 6.5fr) minmax(0, 5.5fr);
    align-items: center;
    column-gap: clamp(2rem, 5vw, 4rem);
    padding-block: clamp(1.5rem, 4vw, 2.75rem) clamp(3.5rem, 8vw, 6rem);
  }
}

/* ---------- 品牌主张 ---------- */
.page-about .about-why {
  position: relative;
  border-block: 1px solid var(--line);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(46, 26, 71, 0.9) 0%, rgba(46, 26, 71, 0) 62%),
    linear-gradient(180deg, #0a1128 0%, #0c1631 100%);
  padding-block: clamp(2.75rem, 6.5vw, 5rem);
}

.page-about .about-why__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .about-why__aside {
  border-left: 2px solid var(--cyan);
  padding-left: clamp(1rem, 2vw, 1.35rem);
}

.page-about .about-why__aside p {
  margin: 0.6rem 0 0;
  font-size: 0.94rem;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .about-why__body h2 {
  margin: 0 0 1.15rem;
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 3.6vw, 2.4rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.022em;
}

.page-about .about-why__body p {
  margin: 0 0 1rem;
  font-size: 1.01rem;
  line-height: 1.82;
  color: var(--text);
}

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

.page-about .about-pair {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-pair__item {
  background: var(--midnight);
  padding: clamp(1.35rem, 3vw, 1.9rem);
  transition: background-color 0.32s var(--ease);
}

.page-about .about-pair__item:hover {
  background: #21335a;
}

.page-about .about-pair__item h3 {
  margin: 0.5rem 0 0.7rem;
  font-family: var(--font-head);
  font-size: 1.14rem;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.page-about .about-pair__item p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--muted);
}

@media (min-width: 640px) {
  .page-about .about-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-why__grid {
    grid-template-columns: minmax(170px, 200px) minmax(0, 1fr);
    column-gap: clamp(2.5rem, 6vw, 5rem);
    row-gap: clamp(1.75rem, 4vw, 3rem);
    align-items: start;
  }

  .page-about .about-why__aside {
    grid-column: 1;
    grid-row: 1 / span 2;
  }

  .page-about .about-why__body {
    grid-column: 2;
    grid-row: 1;
  }

  .page-about .about-pair {
    grid-column: 2;
    grid-row: 2;
  }
}

/* ---------- 发展历程 ---------- */
.page-about .about-history {
  padding-block: clamp(2.75rem, 6.5vw, 5rem);
}

.page-about .about-history__head {
  display: grid;
  gap: 0.8rem;
  margin-bottom: clamp(2rem, 5vw, 3.25rem);
  max-width: 64ch;
}

.page-about .about-history__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(1.65rem, 4vw, 2.55rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.page-about .about-history__lead {
  margin: 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-history__grid {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
}

.page-about .about-history__figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.page-about .about-history__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 3;
  object-fit: cover;
}

.page-about .about-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.35rem);
  position: relative;
  background-image: linear-gradient(var(--line), var(--line));
  background-repeat: no-repeat;
  background-size: 1px 100%;
  background-position: 6px 0;
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: clamp(1.5rem, 3vw, 2rem);
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.4rem;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--space-bg);
  border: 2px solid var(--cyan);
  box-sizing: border-box;
  transition: transform 0.3s var(--ease), background-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-about .about-timeline__item:hover::before,
.page-about .about-timeline__item:focus-within::before {
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(0, 229, 255, 0.15);
}

.page-about .about-timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.1em;
  color: var(--cyan);
  margin-bottom: 0.4rem;
}

.page-about .about-timeline__item h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-head);
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.page-about .about-timeline__item p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--muted);
}

@media (min-width: 1024px) {
  .page-about .about-history__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    column-gap: clamp(2rem, 5vw, 4rem);
    align-items: start;
  }

  .page-about .about-history__figure {
    position: sticky;
    top: calc(var(--bar-h) + 2rem);
  }
}

/* ---------- 团队与文化 ---------- */
.page-about .about-team {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(27, 42, 74, 0) 0%, rgba(27, 42, 74, 0.55) 100%);
  padding-block: clamp(2.75rem, 6.5vw, 5rem);
}

.page-about .about-team__inner {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: center;
}

.page-about .about-team__figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .about-team__title {
  margin: 0.65rem 0 1.05rem;
  font-family: var(--font-head);
  font-size: clamp(1.55rem, 3.6vw, 2.3rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.022em;
  text-wrap: balance;
}

.page-about .about-team__body p {
  margin: 0 0 0.95rem;
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-team__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  margin-top: 1.4rem;
  padding-top: 1.3rem;
  border-top: 1px solid var(--line);
}

.page-about .about-team__stat {
  display: grid;
  gap: 0.25rem;
}

.page-about .about-team__stat b {
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--orange);
  line-height: 1;
}

.page-about .about-team__stat span {
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

@media (min-width: 900px) {
  .page-about .about-team__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    column-gap: clamp(2rem, 5vw, 4rem);
  }
}

/* ---------- 品牌承诺 ---------- */
.page-about .about-pledge {
  position: relative;
  border-block: 1px solid var(--line);
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(46, 26, 71, 0.85) 0%, rgba(46, 26, 71, 0) 58%),
    var(--space-bg);
  padding-block: clamp(2.75rem, 6.5vw, 5rem);
}

.page-about .about-pledge__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-pledge__item {
  background: var(--midnight);
  padding: clamp(1.5rem, 3.5vw, 2.15rem);
  transition: background-color 0.32s var(--ease);
}

.page-about .about-pledge__item:hover {
  background: #21335a;
}

.page-about .about-pledge__index {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
  margin-bottom: 0.85rem;
}

.page-about .about-pledge__item h3 {
  margin: 0 0 0.6rem;
  font-family: var(--font-head);
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-about .about-pledge__item p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.78;
  color: var(--muted);
}

@media (min-width: 820px) {
  .page-about .about-pledge__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 结尾指向 ---------- */
.page-about .about-next {
  padding-block: clamp(2.5rem, 6vw, 4.25rem);
}

.page-about .about-next__inner {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.5rem);
  align-items: end;
}

.page-about .about-next h2 {
  margin: 0.6rem 0 0.75rem;
  font-family: var(--font-head);
  font-size: clamp(1.45rem, 3.4vw, 2.1rem);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.page-about .about-next p {
  margin: 0;
  max-width: 54ch;
  font-size: 0.97rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

@media (min-width: 860px) {
  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    column-gap: clamp(2rem, 5vw, 4rem);
  }
}