.page-about {
  padding-bottom: 64px;
}

.page-about .about-shell {
  display: grid;
  gap: 46px;
  padding-top: 24px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: 28px;
  align-items: start;
}

.page-about h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2rem, 8.4vw, 4.5rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper-50);
}

.page-about .about-hero__lede {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--mist-300);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--line-700);
}

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

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.55rem;
  line-height: 1.1;
  color: var(--paper-50);
  letter-spacing: -0.01em;
}

.page-about .about-stat__unit {
  font-size: 0.72em;
  margin-left: 2px;
  color: var(--phantom-200);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 6px;
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: var(--mist-300);
}

.page-about .about-hero__visual {
  margin: 0;
  position: relative;
}

.page-about .about-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line-700);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.page-about .about-hero__visual figcaption {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--mist-300);
}

/* ---------- 年份索引 ---------- */
.page-about .about-years {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--line-700);
  border-bottom: 1px solid var(--line-700);
}

.page-about .about-years__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--phantom-200);
  text-transform: uppercase;
}

.page-about .about-years__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  max-width: 100%;
}

.page-about .about-years__list a {
  display: inline-block;
  padding: 5px 12px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--paper-50);
  text-decoration: none;
  border: 1px solid var(--line-700);
  border-radius: var(--radius);
  background: var(--ink-900);
  transition: border-color 0.18s ease, color 0.18s ease, background-color 0.18s ease;
}

.page-about .about-years__list a:hover,
.page-about .about-years__list a:focus-visible {
  border-color: var(--phantom-500);
  color: var(--phantom-200);
  background: var(--ink-800);
}

/* ---------- 定位 ---------- */
.page-about .about-position__grid {
  display: grid;
  gap: 26px;
}

.page-about .about-aside {
  border: 1px solid var(--line-700);
  border-left: 3px solid var(--phantom-500);
  border-radius: var(--radius);
  background: var(--ink-900);
  padding: 18px 20px;
}

.page-about .about-aside__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--cyan-400);
}

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

.page-about .about-aside__list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line-700);
  font-size: 0.86rem;
}

.page-about .about-aside__list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .about-aside__k {
  color: var(--mist-300);
}

.page-about .about-aside__v {
  font-family: var(--font-mono);
  color: var(--paper-50);
}

/* ---------- 时间轴 ---------- */
.page-about .about-track {
  display: flex;
  gap: 16px;
  max-width: 100%;
  padding: 4px 2px 18px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  border-top: 1px solid var(--line-700);
}

.page-about .about-node {
  position: relative;
  flex: 0 0 78%;
  scroll-snap-align: start;
  padding: 22px 20px 20px;
  background: var(--ink-800);
  border: 1px solid var(--line-700);
  border-radius: var(--radius);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  top: 0;
  left: 20px;
  width: 26px;
  height: 2px;
  background: var(--phantom-500);
}

.page-about .about-node:hover,
.page-about .about-node:focus-within {
  transform: translateY(-2px);
  border-color: var(--phantom-500);
  box-shadow: var(--shadow-card);
}

.page-about .about-node__year {
  margin: 8px 0 6px;
  font-family: var(--font-mono);
  font-size: 1.9rem;
  line-height: 1;
  color: var(--phantom-200);
  letter-spacing: -0.02em;
}

.page-about .about-node__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--paper-50);
}

.page-about .about-node__body {
  margin: 0 0 16px;
  font-size: 0.88rem;
  line-height: 1.85;
  color: var(--mist-300);
}

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

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

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
  border: 1px solid var(--line-700);
  border-radius: var(--radius);
}

.page-about .about-team__figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--mist-300);
}

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

.page-about .about-team__facts li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--paper-50);
  padding: 10px 0;
  border-bottom: 1px solid var(--line-700);
}

.page-about .about-team__facts .idx {
  color: var(--cyan-400);
}

/* ---------- 合作 ---------- */
.page-about .about-partners__grid {
  display: grid;
  gap: 26px;
  padding: 24px 20px;
  border: 1px solid var(--line-700);
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--ink-900) 0%, var(--ink-950) 78%);
}

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

.page-about .about-partners__list li {
  display: grid;
  gap: 6px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line-700);
}

.page-about .about-partners__list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .about-partners__note {
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--mist-300);
}

.page-about .about-partners__list .tag {
  justify-self: start;
  transition: transform 0.18s ease;
}

.page-about .about-partners__list li:hover .tag {
  transform: translateY(-1px);
}

/* ---------- 版本对照 ---------- */
.page-about .about-compare {
  border: 1px solid var(--line-700);
  border-radius: var(--radius);
  background: var(--ink-900);
  padding: 18px 16px 22px;
}

.page-about .about-compare__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-700);
}

.page-about .about-compare__tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  max-width: 100%;
}

.page-about .about-compare__tab {
  flex: 0 0 auto;
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--mist-300);
  background: var(--ink-800);
  border: 1px solid var(--line-700);
  border-radius: var(--radius);
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-about .about-compare__tab:hover {
  color: var(--paper-50);
  border-color: var(--phantom-500);
}

.page-about .about-compare__tab[aria-pressed="true"] {
  color: var(--ink-950);
  background: var(--cyan-400);
  border-color: var(--cyan-400);
  font-weight: 700;
}

.page-about .about-compare__count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--mist-300);
}

.page-about .about-compare__grid {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.page-about .about-compare__item {
  padding: 16px 18px;
  background: var(--ink-800);
  border: 1px solid var(--line-700);
  border-left: 3px solid var(--line-700);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.page-about .about-compare__item:hover {
  border-left-color: var(--phantom-500);
  transform: translateY(-2px);
}

.page-about .about-compare__label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 8px;
  font-size: 0.82rem;
  color: var(--paper-50);
  letter-spacing: 0.03em;
}

.page-about .about-compare__body {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.82;
  color: var(--mist-300);
}

.page-about .about-version__figure {
  margin: 26px 0 0;
}

.page-about .about-version__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--line-700);
  border-radius: var(--radius);
}

.page-about .about-version__figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--mist-300);
}

/* ---------- 荣誉 ---------- */
.page-about .about-honor__grid {
  display: grid;
  gap: 16px;
}

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

.page-about .about-honor__card--plain {
  background: var(--ink-800);
  border: 1px solid var(--line-700);
  border-radius: var(--radius);
}

.page-about .about-honor__year {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--amber-500);
}

.page-about .about-honor__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper-50);
}

.page-about .about-honor__body {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--mist-300);
}

.page-about .about-honor__links {
  margin: 22px 0 0;
  font-size: 0.88rem;
  line-height: 2;
  color: var(--mist-300);
}

.page-about .about-honor__links a {
  color: var(--phantom-200);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-honor__links a:hover {
  color: var(--cyan-400);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta__inner {
  padding: 30px 22px 32px;
  border: 1px solid var(--line-700);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(108, 77, 255, 0.24) 0%, rgba(6, 16, 29, 0) 62%),
    var(--ink-900);
}

.page-about .about-cta__title {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 6vw, 2.4rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper-50);
}

.page-about .about-cta__body {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--mist-300);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-about .about-shell {
    gap: 58px;
  }

  .page-about .about-node {
    flex: 0 0 320px;
  }

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

  .page-about .about-position__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 34px;
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-about {
    padding-bottom: 88px;
  }

  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 46px;
  }

  .page-about .about-hero__visual {
    margin-top: 58px;
  }

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

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 40px;
    align-items: center;
  }

  .page-about .about-team__figure {
    margin-top: -8px;
  }

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.9fr);
    gap: 38px;
    padding: 34px 32px;
  }

  .page-about .about-compare {
    padding: 22px 24px 26px;
  }

  .page-about .about-honor__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-cta__inner {
    padding: 44px 40px 46px;
  }
}
<<<END>>>