.page-about {
  --about-line: rgba(138, 160, 192, 0.16);
  --about-ink: #8AA0C0;
  --about-rail: 96px;
  position: relative;
  background:
    radial-gradient(900px 520px at 88% 2%, rgba(61, 242, 208, 0.09), transparent 70%),
    radial-gradient(720px 460px at 4% 46%, rgba(122, 92, 255, 0.1), transparent 72%),
    var(--night);
  color: var(--paper);
}

.page-about a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 242, 208, 0.35);
}

.page-about a:hover,
.page-about a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
  outline: none;
}

.page-about a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-about .breadcrumb {
  padding-top: clamp(20px, 3vw, 34px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hd {
  padding: clamp(28px, 5vw, 76px) 0 clamp(24px, 3.4vw, 44px);
}

.page-about .about-hd .display {
  font-family: var(--font-display);
  font-weight: 250;
  font-size: clamp(32px, 5.6vw, 86px);
  line-height: 1.04;
  letter-spacing: -0.015em;
  margin: 14px 0 0;
  max-width: 17ch;
  color: var(--paper);
}

.page-about .about-hd__body {
  margin-top: clamp(22px, 3vw, 40px);
  display: grid;
  gap: clamp(18px, 2.4vw, 34px);
}

.page-about .about-hd__body .lede {
  max-width: 60ch;
  color: var(--paper);
}

.page-about .about-hd__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-ink);
  border-left: 2px solid var(--gold);
  padding-left: 16px;
  align-self: start;
}

@media (min-width: 900px) {
  .page-about .about-hd__body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(28px, 4vw, 64px);
  }
}

/* ---------- 关键数字 ---------- */
.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(26px, 3.6vw, 48px);
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

@media (min-width: 820px) {
  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-facts .console__cell {
  background: linear-gradient(180deg, rgba(11, 24, 48, 0.94), rgba(5, 12, 26, 0.94));
  padding: clamp(16px, 2.2vw, 26px);
}

.page-about .stat__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--about-ink);
}

.page-about .stat__value {
  margin: 8px 0 0;
  font-family: var(--font-data);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-facts .console__cell:first-child .stat__value {
  color: var(--gold);
}

.page-about .stat__unit {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--about-ink);
}

/* ---------- 通用分区 ---------- */
.page-about .about-sec {
  padding: clamp(48px, 6.6vw, 100px) 0;
  border-top: 1px solid var(--about-line);
}

.page-about .about-sec__grid {
  display: grid;
  gap: clamp(18px, 2.6vw, 36px);
}

@media (min-width: 900px) {
  .page-about .about-sec__grid {
    grid-template-columns: minmax(0, 3.2fr) minmax(0, 8.8fr);
    gap: clamp(28px, 4vw, 72px);
  }
}

.page-about .about-sec__side .h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(22px, 2.4vw, 34px);
  line-height: 1.22;
}

.page-about .about-sec__main > .prose {
  margin-top: 0;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: clamp(24px, 3vw, 44px);
}

@media (min-width: 860px) {
  .page-about .about-team {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }
}

.page-about .about-team__text p {
  max-width: 60ch;
}

.page-about .about-roles {
  display: grid;
  gap: clamp(16px, 2vw, 24px);
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-role__top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.page-about .about-role__name {
  font-size: 15px;
  color: var(--paper);
}

.page-about .about-role__n {
  font-family: var(--font-data);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  font-size: 18px;
  color: var(--gold);
}

.page-about .about-role__track {
  height: 6px;
  margin: 9px 0 10px;
  background: var(--night-2);
  overflow: hidden;
}

.page-about .about-role__track span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan-deep), var(--cyan));
}

.page-about .about-role__d {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-ink);
}

.page-about .about-media {
  position: relative;
  overflow: hidden;
  background: var(--night-2);
  border: 1px solid var(--about-line);
}

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

.page-about .about-media--5x7 {
  aspect-ratio: 5 / 7;
}

.page-about .about-media--21x9 {
  aspect-ratio: 21 / 9;
}

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

.page-about figcaption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--about-ink);
}

/* ---------- 处理标准 ---------- */
.page-about .about-qual {
  display: grid;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

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

.page-about .about-qual__item {
  background: var(--night-2);
  padding: clamp(20px, 2.6vw, 32px);
}

.page-about .about-qual__n {
  margin: 0;
  font-family: var(--font-data);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  font-size: clamp(38px, 5.2vw, 68px);
  line-height: 1;
  color: var(--paper);
}

.page-about .about-qual__item:first-child .about-qual__n {
  color: var(--gold);
}

.page-about .about-qual__u {
  margin: 8px 0 0;
  font-size: 11px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--about-ink);
}

.page-about .about-qual__item h3 {
  margin: 16px 0 8px;
  font-size: 17px;
  font-weight: 500;
  color: var(--paper);
}

.page-about .about-qual__item p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-ink);
}

/* ---------- 时间轴 ---------- */
.page-about .about-banner {
  margin: clamp(26px, 3.6vw, 48px) 0 0;
}

.page-about .about-tl__inner {
  display: grid;
  gap: clamp(16px, 2vw, 36px);
  margin-top: clamp(28px, 4vw, 52px);
}

@media (min-width: 900px) {
  .page-about .about-tl__inner {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
  }
  .page-about .about-years {
    position: sticky;
    top: calc(var(--header-h) + 26px);
    align-self: start;
  }
}

.page-about .about-years__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

@media (min-width: 900px) {
  .page-about .about-years__list {
    flex-direction: column;
    gap: 2px;
  }
}

.page-about .about-years__list a {
  display: inline-block;
  padding: 4px 0 4px 12px;
  border-bottom: none;
  border-left: 2px solid transparent;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--about-ink);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-years__list a:hover,
.page-about .about-years__list a:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
}

.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
}

.page-about .about-step {
  --k: 0;
  scroll-margin-top: calc(var(--header-h) + 40px);
  padding: clamp(18px, 2.4vw, 30px) 0 calc(18px + var(--k) * 24px);
  border-top: 1px solid var(--about-line);
}

.page-about .about-step:last-child {
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-step:nth-child(1) { --k: 0; }
.page-about .about-step:nth-child(2) { --k: 0.17; }
.page-about .about-step:nth-child(3) { --k: 0.33; }
.page-about .about-step:nth-child(4) { --k: 0.5; }
.page-about .about-step:nth-child(5) { --k: 0.67; }
.page-about .about-step:nth-child(6) { --k: 0.83; }
.page-about .about-step:nth-child(7) { --k: 1; }

.page-about .about-step__head {
  display: grid;
  gap: 8px;
}

@media (min-width: 700px) {
  .page-about .about-step__head {
    grid-template-columns: minmax(110px, 180px) minmax(0, 1fr);
    align-items: baseline;
    gap: clamp(16px, 2.4vw, 36px);
  }
}

.page-about .about-step__y {
  margin: 0;
  font-family: var(--font-data);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  font-size: calc(24px + var(--k) * 22px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .about-step__h {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: calc(18px + var(--k) * 12px);
  line-height: 1.28;
  color: var(--paper);
}

.page-about .about-step__body {
  margin-top: 12px;
}

.page-about .about-step__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-ink);
}

/* ---------- 内容版图 ---------- */
.page-about .about-cov {
  display: grid;
  gap: clamp(24px, 3vw, 44px);
}

@media (min-width: 900px) {
  .page-about .about-cov {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }
}

.page-about .about-donut {
  display: block;
  width: min(200px, 62%);
  height: auto;
}

.page-about .about-donut__num {
  font-family: var(--font-data);
  font-weight: 800;
  font-size: 24px;
  fill: var(--paper);
}

.page-about .about-donut__lbl {
  font-family: var(--font-body);
  font-size: 9px;
  letter-spacing: 0.18em;
  fill: var(--about-ink);
}

.page-about .about-cov__note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--about-ink);
}

.page-about .about-events {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: clamp(12px, 1.6vw, 18px);
  margin-top: clamp(18px, 2.4vw, 28px);
}

.page-about .about-event {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(16px, 2vw, 22px);
  background: var(--night-2);
  border: 1px solid var(--about-line);
  border-left: 3px solid var(--accent, var(--cyan));
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.page-about .about-event:hover {
  transform: translateY(-3px);
  border-color: var(--accent, var(--cyan));
}

.page-about .about-event__label {
  margin: 0;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--about-ink);
}

.page-about .about-event__title {
  margin: 0;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.35;
  color: var(--paper);
}

.page-about .about-event__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--about-ink);
}

.page-about .about-cov__foot {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--about-ink);
}

.page-about .about-stack {
  margin-top: clamp(28px, 4vw, 52px);
}

/* ---------- 读者 ---------- */
.page-about .about-readgrid {
  display: grid;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

@media (min-width: 700px) {
  .page-about .about-readgrid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-readgrid > div {
  background: var(--night-2);
  padding: clamp(18px, 2.4vw, 28px);
}

.page-about .about-bar {
  margin-top: clamp(22px, 3vw, 34px);
  max-width: 520px;
}

.page-about .about-bar__top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 13px;
  color: var(--about-ink);
}

.page-about .about-bar__top b {
  font-family: var(--font-data);
  font-weight: 800;
  font-size: 16px;
  color: var(--cyan);
}

.page-about .about-read__text {
  margin-top: clamp(22px, 3vw, 34px);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta .h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(28px, 4vw, 56px);
  line-height: 1.06;
  max-width: 18ch;
}

.page-about .about-cta__lede {
  margin-top: clamp(18px, 2.4vw, 28px);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .about-cta__actions .btn {
  border-bottom: none;
}

.page-about .about-cta__links {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-ink);
}

@media (max-width: 520px) {
  .page-about .about-hd .display {
    max-width: none;
  }
  .page-about .about-events {
    grid-template-columns: minmax(0, 1fr);
  }
  .page-about .about-step__y {
    font-size: calc(22px + var(--k) * 14px);
  }
}
</final>
</final>

.page-about {
  --accent: currentColor;
}