.page-about {
  --about-rule-dark: rgba(11, 11, 15, 0.16);
  background: var(--night);
  color: var(--paper);
  overflow-wrap: break-word;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  border-bottom: 3px solid var(--red);
  background:
    radial-gradient(120% 85% at 6% 0%, rgba(200, 16, 46, 0.52), transparent 60%),
    radial-gradient(90% 70% at 100% 106%, rgba(255, 59, 92, 0.2), transparent 62%),
    linear-gradient(180deg, var(--night) 0%, #101018 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(243, 239, 231, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(243, 239, 231, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
}

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

.page-about .about-hero__inner {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  padding: clamp(24px, 5vw, 58px) 0 clamp(24px, 3.6vw, 44px);
}

.page-about .about-hero .breadcrumb {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-about .about-hero .breadcrumb a {
  color: var(--gold);
  text-decoration: none;
}

.page-about .about-hero .breadcrumb a:hover {
  color: var(--neon);
}

.page-about .about-hero .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--neon);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 7vw, 60px);
  line-height: 1.04;
  letter-spacing: -0.02em;
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--neon);
}

.page-about .about-hero__lede {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  border: 3px solid var(--paper);
  background: var(--carbon);
  box-shadow: var(--shadow-hard);
}

.page-about .about-hero__figure::before {
  content: "V4";
  position: absolute;
  top: -3px;
  left: -3px;
  z-index: 2;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--paper);
  background: var(--red);
}

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

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 2px solid var(--hairline-strong);
  background: var(--hairline);
  margin-bottom: clamp(30px, 5vw, 62px);
}

.page-about .about-hero__stat {
  padding: 15px 16px;
  background: var(--night);
}

.page-about .about-hero__stat b {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(19px, 2.6vw, 28px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--gold);
}

.page-about .about-hero__stat span {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 01 从看台到入口 ---------- */
.page-about .about-origin__inner {
  padding: clamp(38px, 6vw, 80px) 0;
}

.page-about .about-origin__grid {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .about-origin__lead {
  border-left: 5px solid var(--red);
  padding-left: clamp(14px, 2vw, 22px);
}

.page-about .about-origin__lead p {
  margin: 0;
  font-size: clamp(17px, 2.1vw, 23px);
  font-weight: 700;
  line-height: 1.62;
  color: var(--night);
}

.page-about .about-origin__body p {
  margin: 0 0 1em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--carbon);
}

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

/* ---------- 02 版本演进 ---------- */
.page-about .about-versions {
  background:
    radial-gradient(80% 60% at 100% 0%, rgba(43, 179, 255, 0.12), transparent 62%),
    var(--night);
}

.page-about .about-versions__inner {
  padding: clamp(38px, 6vw, 86px) 0;
}

.page-about .about-versions__intro {
  margin: 0;
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-versions__figure {
  margin: clamp(22px, 3vw, 34px) 0 0;
  border: 2px solid var(--hairline);
  background: var(--carbon);
  overflow: hidden;
}

.page-about .about-versions__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 3;
  object-fit: cover;
}

.page-about .about-versions__track {
  margin-top: clamp(24px, 3.4vw, 38px);
}

.page-about .about-versions__nodes {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(18px, 2.6vw, 28px);
}

.page-about .about-node-btn {
  appearance: none;
  cursor: pointer;
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--paper);
  background: var(--carbon);
  border: 2px solid var(--hairline-strong);
  border-radius: 0;
  transition: background 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-about .about-node-btn:hover {
  color: var(--neon);
  border-color: var(--neon);
}

.page-about .about-node-btn[data-active] {
  color: #ffffff;
  background: var(--red);
  border-color: var(--red);
  box-shadow: 4px 4px 0 rgba(243, 239, 231, 0.85);
  transform: translate(-2px, -2px);
}

.page-about .about-versions__panels {
  display: grid;
  gap: clamp(14px, 2.2vw, 22px);
}

.page-about .about-version {
  position: relative;
  padding: clamp(20px, 2.6vw, 30px);
  background: linear-gradient(152deg, var(--carbon) 0%, #111118 100%);
  border: 2px solid var(--hairline);
  border-top: 4px solid var(--grey);
}

.page-about .about-version:nth-child(2) {
  border-top-color: var(--blue);
}

.page-about .about-version:nth-child(3) {
  border-top-color: var(--green);
}

.page-about .about-version:nth-child(4) {
  border-top-color: var(--gold);
}

.page-about .about-version__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 4.2vw, 46px);
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--hairline-strong);
}

.page-about .about-version__name {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-version__text {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-version__era {
  display: inline-block;
  margin-top: 14px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--night);
  background: var(--gold);
}

/* ---------- 03 栏目维护 ---------- */
.page-about .about-upkeep {
  background: linear-gradient(180deg, var(--carbon) 0%, #13131a 100%);
}

.page-about .about-upkeep__inner {
  padding: clamp(38px, 6vw, 84px) 0;
}

.page-about .about-upkeep__grid {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .about-upkeep__item {
  padding: clamp(20px, 2.4vw, 28px);
  background: rgba(11, 11, 15, 0.72);
  border: 2px solid var(--hairline);
  border-left: 5px solid var(--blue);
}

.page-about .about-upkeep__item:nth-child(2) {
  border-left-color: var(--green);
}

.page-about .about-upkeep__item:nth-child(3) {
  border-left-color: var(--gold);
}

.page-about .about-upkeep__item h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 900;
  color: var(--paper);
}

.page-about .about-upkeep__item p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 04 双端 ---------- */
.page-about .about-dual {
  background:
    radial-gradient(70% 55% at 0% 50%, rgba(200, 16, 46, 0.22), transparent 62%),
    var(--night);
}

.page-about .about-dual__inner {
  padding: clamp(38px, 6vw, 86px) 0;
}

.page-about .about-dual__figure {
  margin: clamp(20px, 3vw, 32px) 0 0;
  border: 2px solid var(--hairline);
  background: var(--carbon);
  overflow: hidden;
}

.page-about .about-dual__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}

.page-about .about-dual__figure:hover img {
  transform: scale(1.035);
}

.page-about .about-dual__cols {
  display: grid;
  gap: clamp(20px, 3vw, 28px);
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-dual__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--blue);
}

.page-about .about-dual__col--small .about-dual__kicker {
  color: var(--neon);
}

.page-about .about-dual__col h3 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.3vw, 26px);
  font-weight: 900;
  line-height: 1.26;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-dual__list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-about .about-dual__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-dual__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  background: var(--red);
}

.page-about .about-dual__col--small .about-dual__list li::before {
  background: var(--neon);
}

.page-about .about-dual__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

/* ---------- 05 团队 ---------- */
.page-about .about-team__inner {
  padding: clamp(38px, 6vw, 84px) 0;
}

.page-about .about-team__intro {
  margin: 0;
  max-width: 36em;
  font-size: clamp(15px, 1.55vw, 17px);
  line-height: 1.85;
  color: #3a3a42;
}

.page-about .about-team__groups {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-team-card {
  padding: clamp(20px, 2.4vw, 28px);
  background: #ffffff;
  border: 3px solid var(--night);
  box-shadow: 6px 6px 0 rgba(11, 11, 15, 0.9);
}

.page-about .about-team-card__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--red);
}

.page-about .about-team-card h3 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 900;
  color: var(--night);
}

.page-about .about-team-card p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: #3a3a42;
}

.page-about .about-team-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.page-about .about-team__meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 18px;
  margin-top: clamp(24px, 3vw, 36px);
  padding-top: clamp(20px, 2.6vw, 28px);
  border-top: 2px dashed var(--about-rule-dark);
}

.page-about .about-team__meta b {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1;
  color: var(--red);
}

.page-about .about-team__meta span {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: #55555f;
}

.page-about .about-team__coop {
  margin: 18px 0 0;
  padding-left: 16px;
  border-left: 4px solid var(--gold);
  font-size: 15px;
  line-height: 1.8;
  color: #3a3a42;
}

/* ---------- 收尾 ---------- */
.page-about .about-end {
  position: relative;
  border-top: 4px solid var(--night);
  background:
    radial-gradient(90% 130% at 100% 0%, rgba(255, 59, 92, 0.5), transparent 62%),
    linear-gradient(122deg, var(--red) 0%, #8d0b20 100%);
}

.page-about .about-end__inner {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
  padding: clamp(38px, 5.5vw, 72px) 0;
}

.page-about .about-end h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.4vw, 38px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.page-about .about-end__text p {
  margin: 12px 0 0;
  max-width: 32em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.88);
}

.page-about .about-end__links {
  display: grid;
  gap: 12px;
}

.page-about .about-end__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 18px;
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  text-decoration: none;
  background: rgba(11, 11, 15, 0.26);
  border: 2px solid rgba(255, 255, 255, 0.55);
  transition: background 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-about .about-end__link span {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
}

.page-about .about-end__link:hover {
  background: var(--night);
  transform: translate(-3px, -3px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 860px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.28fr);
    align-items: start;
  }

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

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

  .page-about .about-dual__cols {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 1fr);
    gap: 0;
    align-items: stretch;
  }

  .page-about .about-dual__col--big {
    padding-right: clamp(22px, 3vw, 36px);
  }

  .page-about .about-dual__col--small {
    padding-left: clamp(22px, 3vw, 36px);
    border-left: 2px solid var(--neon);
    box-shadow: -12px 0 34px -14px rgba(255, 59, 92, 0.8);
  }

  .page-about .about-end__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: center;
  }

  .page-about .about-end__links {
    gap: 14px;
  }
}

@media (min-width: 940px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: end;
    gap: clamp(32px, 5vw, 70px);
    padding: clamp(44px, 6vw, 84px) 0 clamp(34px, 4vw, 56px);
  }

  .page-about .about-hero__actions {
    margin-top: 30px;
    padding-top: 22px;
    border-top: 2px solid var(--hairline);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-node-btn,
  .page-about .about-end__link,
  .page-about .about-dual__figure img {
    transition: none;
  }

  .page-about .about-node-btn[data-active] {
    transform: none;
  }

  .page-about .about-dual__figure:hover img {
    transform: none;
  }

  .page-about .about-end__link:hover {
    transform: none;
  }
}
<<<END>>>