.page-about {
  --about-rail: 200px;
  background: var(--ink-950);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about *,
.page-about *::before,
.page-about *::after {
  box-sizing: border-box;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 48px) 0 clamp(48px, 7vw, 104px);
  background: linear-gradient(168deg, var(--ink-900) 0%, var(--ink-950) 64%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -14%;
  width: min(60vw, 720px);
  aspect-ratio: 1;
  background: radial-gradient(closest-side, rgba(18, 224, 200, 0.18), transparent 72%);
  transform: rotate(-9deg);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-cyan) 30%, transparent 80%);
}

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

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(28px, 5vw, 68px);
}

.page-about .about-kicker {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-light);
  font-weight: 300;
  font-size: clamp(2.3rem, 7.4vw, 4.7rem);
  line-height: 0.99;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-about .about-hero__sum {
  margin: 0;
  max-width: 40em;
  font-size: clamp(0.98rem, 1.6vw, 1.1rem);
  line-height: 1.9;
  color: rgba(242, 247, 244, 0.76);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(24px, 4vw, 40px);
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(14px, 2.2vw, 22px);
  background: rgba(8, 36, 28, 0.82);
}

.page-about .about-stat__v {
  font-family: var(--font-num);
  font-size: clamp(1.45rem, 3.2vw, 2.05rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .about-stat__k {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

/* ---------- 通用区块与排版 ---------- */

.page-about .about-band {
  position: relative;
  padding: clamp(52px, 8vw, 116px) 0;
  border-top: 1px solid var(--line);
}

.page-about .about-head {
  display: grid;
  gap: clamp(12px, 1.6vw, 18px);
  margin-bottom: clamp(28px, 4.4vw, 58px);
}

.page-about .about-index {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-about .about-h2 {
  margin: 0;
  font-family: var(--font-light);
  font-weight: 300;
  font-size: clamp(1.9rem, 5.4vw, 3.6rem);
  line-height: 1.03;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-lede {
  margin: 0;
  max-width: 44em;
  font-size: clamp(0.94rem, 1.5vw, 1.04rem);
  line-height: 1.85;
  color: rgba(242, 247, 244, 0.7);
}

.page-about .about-prose > * + * {
  margin-top: 14px;
}

.page-about .about-prose p {
  margin: 0;
  font-size: 0.97rem;
  line-height: 1.9;
  color: rgba(242, 247, 244, 0.74);
}

/* ---------- 01 起点 ---------- */

.page-about .about-origin {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .about-media {
  position: relative;
  margin: 0;
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.page-about .about-media--cut img {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

.page-about .about-media figcaption {
  padding: 12px 16px;
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.page-about .about-mini {
  list-style: none;
  display: grid;
  gap: 1px;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-mini li {
  display: grid;
  gap: 8px;
  padding: clamp(16px, 2.4vw, 26px);
  background: rgba(8, 36, 28, 0.6);
}

.page-about .about-mini__v {
  font-family: var(--font-num);
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  color: var(--yellow);
}

.page-about .about-mini__k {
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 02 能力线 ---------- */

.page-about .about-rail {
  display: flex;
  gap: clamp(12px, 2vw, 24px);
  margin: 0 0 clamp(20px, 3vw, 34px);
  padding: 0;
  overflow-x: auto;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
  scrollbar-width: none;
}

.page-about .about-rail::-webkit-scrollbar {
  display: none;
}

.page-about .about-rail__item {
  flex: 0 0 auto;
  padding: 12px 2px;
  font-family: var(--font-num);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

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

.page-about .about-stages {
  border-top: 1px solid var(--line-strong);
}

.page-about .about-stage {
  position: relative;
  border-bottom: 1px solid var(--line);
}

.page-about .about-stage__sum {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "year mark"
    "name mark";
  gap: 6px 18px;
  align-items: center;
  padding: clamp(18px, 2.6vw, 28px) 0;
  cursor: pointer;
  list-style: none;
}

.page-about .about-stage__sum::-webkit-details-marker {
  display: none;
}

.page-about .about-stage__sum::marker {
  content: "";
}

.page-about .about-stage__year {
  grid-area: year;
  font-family: var(--font-num);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .about-stage__name {
  grid-area: name;
  font-family: var(--font-light);
  font-weight: 300;
  font-size: clamp(1.2rem, 3vw, 1.78rem);
  line-height: 1.22;
  color: var(--paper);
  transition: color 0.2s var(--ease);
}

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

.page-about .about-stage__sum:focus-visible {
  outline: 1px solid var(--line-cyan);
  outline-offset: 4px;
}

.page-about .about-stage__mark {
  grid-area: mark;
  position: relative;
  width: 18px;
  height: 18px;
  align-self: center;
}

.page-about .about-stage__mark::before,
.page-about .about-stage__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 0.24s var(--ease), opacity 0.24s var(--ease);
}

.page-about .about-stage__mark::before {
  top: 8px;
  left: 0;
  width: 18px;
  height: 1.5px;
}

.page-about .about-stage__mark::after {
  top: 0;
  left: 8px;
  width: 1.5px;
  height: 18px;
}

.page-about .about-stage[open] .about-stage__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-about .about-stage__body {
  display: grid;
  gap: 16px;
  padding: 0 0 clamp(24px, 3.4vw, 42px);
  animation: about-fade 0.24s var(--ease);
}

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

.page-about .about-facts li {
  position: relative;
  padding-left: 22px;
  font-size: 0.92rem;
  line-height: 1.82;
  color: var(--muted);
}

.page-about .about-facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.8em;
  width: 11px;
  height: 1px;
  background: var(--cyan);
}

@keyframes about-fade {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 03 团队 ---------- */

.page-about .about-team {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
}

.page-about .about-team__pics {
  display: grid;
  gap: clamp(14px, 2vw, 22px);
}

.page-about .about-roster {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(26px, 3.6vw, 44px) 0 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-roster li {
  display: grid;
  gap: 6px;
  padding: clamp(14px, 2vw, 22px);
  background: rgba(8, 36, 28, 0.6);
}

.page-about .about-roster__n {
  font-family: var(--font-num);
  font-size: 1.5rem;
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-roster__l {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 04 覆盖 ---------- */

.page-about .about-cover {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .about-cover__col h3 {
  margin: 0 0 14px;
  font-family: var(--font-light);
  font-weight: 300;
  font-size: 1.35rem;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .about-partners {
  list-style: none;
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
}

.page-about .about-partners li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: baseline;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

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

.page-about .about-partners__n {
  font-family: var(--font-num);
  font-size: 1.02rem;
  color: var(--yellow);
  white-space: nowrap;
}

.page-about .about-partners__l {
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-chart {
  position: relative;
  overflow: hidden;
  margin: clamp(32px, 5vw, 62px) 0 0;
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(8, 36, 28, 0.72), rgba(4, 20, 15, 0.92));
}

.page-about .about-chart::after {
  content: "";
  position: absolute;
  inset: auto -20% -60% 30%;
  height: 120%;
  background: radial-gradient(closest-side, rgba(18, 224, 200, 0.12), transparent 70%);
  transform: rotate(-8deg);
  pointer-events: none;
}

.page-about .about-chart__cap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 18px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
  position: relative;
  z-index: 1;
}

.page-about .about-chart__note {
  font-family: var(--font-num);
  color: var(--cyan);
}

.page-about .about-chart__svg {
  display: block;
  width: 100%;
  height: auto;
  position: relative;
  z-index: 1;
}

.page-about .about-chart__svg circle {
  transition: stroke-width 0.2s var(--ease), fill 0.2s var(--ease);
}

.page-about .about-chart__svg circle:hover {
  fill: var(--cyan);
  stroke-width: 6;
}

/* ---------- 05 认可 ---------- */

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

.page-about .about-honor__item {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: clamp(22px, 3vw, 34px);
  background: rgba(8, 36, 28, 0.6);
}

.page-about .about-honor__tag {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-about .about-honor__item h3 {
  margin: 0;
  font-family: var(--font-light);
  font-weight: 300;
  font-size: 1.22rem;
  line-height: 1.32;
  color: var(--paper);
}

.page-about .about-honor__item p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 06 下一步 ---------- */

.page-about .about-next {
  list-style: none;
  display: grid;
  gap: clamp(18px, 3vw, 28px);
  margin: 0;
  padding: 0;
}

.page-about .about-next li {
  position: relative;
  display: grid;
  align-content: start;
  gap: 12px;
  padding: clamp(22px, 2.8vw, 32px);
  border: 1px solid var(--line);
  background: rgba(8, 36, 28, 0.62);
}

.page-about .about-next li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 44px;
  height: 3px;
  background: var(--cyan);
}

.page-about .about-next__n {
  font-family: var(--font-num);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-about .about-next li h3 {
  margin: 0;
  font-family: var(--font-light);
  font-weight: 300;
  font-size: 1.25rem;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .about-next li p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 结尾 ---------- */

.page-about .about-cta {
  position: relative;
  overflow: hidden;
  padding: clamp(56px, 8vw, 120px) 0;
  border-top: 1px solid var(--line);
  background: linear-gradient(200deg, var(--ink-900) 0%, var(--ink-950) 72%);
}

.page-about .about-cta::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -12%;
  width: min(52vw, 560px);
  aspect-ratio: 1;
  background: radial-gradient(closest-side, rgba(255, 210, 63, 0.13), transparent 70%);
  transform: rotate(-8deg);
  pointer-events: none;
}

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

.page-about .about-cta__inner {
  display: grid;
  gap: 18px;
  max-width: 46rem;
}

.page-about .about-cta__title {
  margin: 0;
  font-family: var(--font-light);
  font-weight: 300;
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  line-height: 1.06;
  color: var(--paper);
}

.page-about .about-cta__text {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.85;
  color: rgba(242, 247, 244, 0.72);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.page-about .about-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 24px;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  color: var(--paper);
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .about-btn:hover,
.page-about .about-btn:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  outline: none;
}

.page-about .about-btn--accent {
  color: var(--ink-950);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 500;
}

.page-about .about-btn--accent:hover,
.page-about .about-btn--accent:focus-visible {
  color: var(--ink-950);
  background: var(--cyan-soft);
  border-color: var(--cyan-soft);
}

.page-about .about-btn--quiet {
  color: var(--muted);
  border-color: transparent;
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-about .about-team__pics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

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

  .page-about .about-stage__sum {
    grid-template-columns: var(--about-rail) 1fr auto;
    grid-template-areas: "year name mark";
    gap: 0 24px;
  }

  .page-about .about-stage__body {
    padding-left: calc(var(--about-rail) + 24px);
  }
}

@media (min-width: 860px) {
  .page-about .about-cover {
    grid-template-columns: 1fr 1fr;
    gap: clamp(32px, 5vw, 72px);
  }

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

  .page-about .about-next {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(20px, 3vw, 34px);
  }
}

@media (min-width: 900px) {
  .page-about .about-origin {
    grid-template-columns: 5fr 7fr;
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }
}

@media (min-width: 940px) {
  .page-about .about-hero__grid {
    grid-template-columns: 5fr 7fr;
    gap: clamp(32px, 5vw, 80px);
    align-items: end;
  }

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

@media (min-width: 960px) {
  .page-about .about-team {
    grid-template-columns: 5fr 7fr;
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }
}

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

  .page-about .about-stage__mark::before,
  .page-about .about-stage__mark::after,
  .page-about .about-chart__svg circle {
    transition: none;
  }
}
<<<END>>>