.page-about {
  --about-rail-w: 224px;
  --about-hair: rgba(34, 26, 21, 0.14);
  --about-tint: rgba(199, 154, 69, 0.12);
  background: var(--paper);
  color: var(--ink);
}

.page-about .about-section {
  padding-block: clamp(48px, 7vw, 88px);
}

/* 页头 */
.page-about .about-head {
  padding-block: clamp(20px, 3.5vw, 36px) 0;
}

.page-about .about-head .page-title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(30px, 5.6vw, 58px);
  line-height: 1.18;
  letter-spacing: 0.01em;
  margin: 14px 0 18px;
  max-width: 20em;
}

.page-about .about-head .page-lede {
  font-size: clamp(16px, 1.9vw, 18px);
  line-height: 1.8;
  max-width: 40em;
}

/* 首屏介绍 */
.page-about .about-hero {
  display: grid;
  gap: 32px;
  padding-block: clamp(28px, 4vw, 44px) clamp(40px, 6vw, 72px);
}

.page-about .about-hero-text p {
  margin: 0 0 1.1em;
  line-height: 1.8;
}

.page-about .about-hero-text p:first-child {
  font-size: 1.05em;
}

.page-about .about-hero-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .about-hero-list li {
  display: flex;
  gap: 14px;
  align-items: baseline;
  font-size: 15px;
  line-height: 1.65;
  padding: 11px 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-hero-list li:last-child {
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-hero-list .mono {
  flex: 0 0 auto;
  color: var(--red);
  font-size: 12px;
}

/* 图片通用 */
.page-about figure {
  margin: 0;
}

.page-about figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-l);
}

.page-about figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--slate);
}

.page-about .about-shot--hero img {
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* 时间轴 */
.page-about .about-timeline {
  display: grid;
  gap: 26px;
  margin-top: clamp(28px, 4vw, 44px);
}

.page-about .about-rail {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-about .about-rail-link {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 12px;
  border-left: 2px solid var(--about-hair);
  font-size: 14px;
  color: var(--slate);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .about-rail-link .mono {
  font-size: 11px;
  letter-spacing: 0.14em;
}

.page-about .about-rail-link:hover,
.page-about .about-rail-link:focus-visible {
  color: var(--red);
  border-left-color: var(--gold);
  background: var(--about-tint);
}

.page-about .about-rail-link:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-about .about-stage {
  padding: 24px 0 28px;
  border-top: 1px solid var(--about-hair);
  scroll-margin-top: 104px;
}

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

.page-about .about-stage:target {
  border-top-color: var(--gold);
}

.page-about .about-stage:target .about-stage-title {
  color: var(--red);
}

.page-about .about-stage-year {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .about-stage-title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(21px, 3vw, 28px);
  line-height: 1.35;
  margin: 0 0 12px;
}

.page-about .about-stage p:last-child {
  margin: 0;
  line-height: 1.8;
  max-width: 44em;
}

/* 版本体系 */
.page-about .about-version {
  background: var(--sand);
}

.page-about .about-vbar {
  display: grid;
  gap: 14px;
  margin-top: clamp(26px, 3.5vw, 38px);
}

.page-about .about-vseg {
  padding: 24px 22px 26px;
  border-radius: var(--radius-m);
  min-width: 0;
}

.page-about .about-vseg--a {
  background: var(--gold);
  color: var(--ink);
}

.page-about .about-vseg--b {
  background: var(--red);
  color: var(--snow);
}

.page-about .about-vseg--c {
  background: var(--night);
  color: var(--snow);
}

.page-about .about-vseg-char {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(32px, 6vw, 46px);
  font-weight: 600;
  line-height: 1;
}

.page-about .about-vseg-key {
  display: block;
  margin: 12px 0 10px;
  font-size: 11px;
  letter-spacing: 0.14em;
  opacity: 0.85;
}

.page-about .about-vseg p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
}

.page-about .about-flow {
  list-style: none;
  margin: clamp(24px, 3.5vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-flow li {
  background: var(--snow);
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-m);
  padding: 20px 20px 22px;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-about .about-flow li:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
}

.page-about .about-flow .mono {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .about-flow strong {
  display: block;
  margin: 9px 0 7px;
  font-size: 16px;
  line-height: 1.5;
}

.page-about .about-flow p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
}

.page-about .about-flow a,
.page-about .note a {
  color: var(--red);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-about .about-flow a:hover,
.page-about .note a:hover {
  color: var(--red-deep);
}

.page-about .about-flow a:focus-visible,
.page-about .note a:focus-visible,
.page-about .about-next-card:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

.page-about .about-version .note {
  margin-top: 22px;
}

/* 团队 */
.page-about .about-team {
  display: grid;
  gap: 32px;
  margin-top: clamp(26px, 3.5vw, 40px);
}

.page-about .about-shot--square img {
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-about .about-role {
  padding: 20px 0 22px;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-role:first-child {
  border-top: 2px solid var(--red);
  padding-top: 18px;
}

.page-about .about-role-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.page-about .about-role-name {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(20px, 2.8vw, 26px);
  line-height: 1.3;
  margin: 0;
}

.page-about .about-role-head .mono {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--slate);
}

.page-about .about-role p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  max-width: 42em;
}

/* 能力数据带 */
.page-about .about-band {
  position: relative;
  overflow: hidden;
  background: var(--night);
  color: var(--snow);
  padding-block: clamp(48px, 7vw, 88px);
}

.page-about .about-band::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto auto;
  width: 60%;
  height: 120%;
  background: radial-gradient(circle at 70% 30%, rgba(199, 154, 69, 0.22), transparent 62%);
  pointer-events: none;
}

.page-about .about-band .shell {
  position: relative;
}

.page-about .about-band-eyebrow {
  color: var(--gold);
}

.page-about .about-band-title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.3;
  color: var(--snow);
  margin: 12px 0 14px;
}

.page-about .about-band-lede {
  margin: 0;
  max-width: 40em;
  line-height: 1.8;
  color: rgba(253, 251, 247, 0.82);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 22px 26px;
  margin-top: clamp(28px, 4vw, 44px);
  padding-top: 26px;
  border-top: 1px solid rgba(199, 154, 69, 0.42);
}

.page-about .about-stat {
  display: grid;
  gap: 6px;
}

.page-about .about-stat-num {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(30px, 4.6vw, 46px);
  line-height: 1.05;
  color: var(--snow);
}

.page-about .about-stat-unit {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--gold);
  margin-left: 4px;
}

.page-about .about-stat-label {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(253, 251, 247, 0.72);
}

.page-about .about-band-text {
  margin: clamp(26px, 3.5vw, 36px) 0 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(253, 251, 247, 0.86);
}

.page-about .about-band-figure {
  margin-top: clamp(26px, 4vw, 44px);
}

.page-about .about-band-figure img {
  border-radius: var(--radius-m);
  opacity: 0.94;
}

/* 后续入口 */
.page-about .about-next-section {
  padding-block: clamp(48px, 7vw, 84px);
}

.page-about .about-next {
  display: grid;
  gap: 14px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .about-next-card {
  display: block;
  padding: 22px 22px 24px;
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-m);
  background: var(--snow);
  color: var(--ink);
  text-decoration: none;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .about-next-card:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
  background: var(--paper);
}

.page-about .about-next-card .mono {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--red);
}

.page-about .about-next-card strong {
  display: block;
  margin: 10px 0 8px;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 20px;
  line-height: 1.4;
}

.page-about .about-next-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--slate);
}

.page-about .about-next-section .note {
  margin-top: 24px;
  max-width: 44em;
}

/* 窄屏收束 */
@media (max-width: 420px) {
  .page-about .about-hero-list li {
    flex-direction: column;
    gap: 4px;
  }
}

@media (min-width: 820px) {
  .page-about .about-vbar {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .about-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

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

@media (min-width: 960px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 4vw, 56px);
    align-items: start;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: clamp(32px, 4vw, 56px);
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-about .about-timeline {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: 0 clamp(36px, 4vw, 64px);
    align-items: start;
  }

  .page-about .about-rail {
    display: block;
    position: sticky;
    top: 104px;
  }

  .page-about .about-rail-link {
    display: flex;
    align-items: baseline;
    width: 100%;
    padding: 11px 14px;
    margin-bottom: 4px;
    border-left: 2px solid var(--about-hair);
  }

  .page-about .about-stage {
    padding: 30px 0 34px;
  }

  .page-about .about-stage:first-child {
    padding-top: 0;
    border-top: 0;
  }
}
<<<END>>>