.page-about {
  --about-rail: 88px;
  --about-gap: clamp(24px, 4vw, 56px);
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(20px, 3vw, 34px) 0 clamp(28px, 4vw, 48px);
  background: linear-gradient(180deg, var(--sand) 0%, rgba(244, 232, 209, .35) 60%, var(--paper) 100%);
  border-bottom: var(--hair);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
  margin-top: clamp(18px, 3vw, 34px);
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr);
  }
}

.page-about .about-hero h1 {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(30px, 5.6vw, 52px);
  line-height: 1.16;
  letter-spacing: -.015em;
  color: var(--ink);
  margin: 10px 0 18px;
}

.page-about .about-hero__lead {
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.9;
  color: var(--graphite);
  max-width: 62ch;
  margin: 0 0 26px;
}

.page-about .about-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero__figure {
  position: relative;
  overflow: hidden;
  background: var(--ink-gold);
  border: 1px solid var(--gold-deep);
  padding: clamp(16px, 2vw, 22px);
}

.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(201, 162, 39, .28), rgba(201, 162, 39, 0) 54%);
  pointer-events: none;
}

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

/* ---------- 关键数字条 ---------- */
.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(26px, 4vw, 44px) 0 0;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (min-width: 760px) {
  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-facts > div {
  background: var(--paper);
  padding: 16px 18px;
}

.page-about .about-facts dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--brick);
  margin-bottom: 8px;
}

.page-about .about-facts dd {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.2;
  color: var(--ink);
}

/* ---------- 纵向时间轴 ---------- */
.page-about .about-timeline {
  padding: clamp(12px, 2vw, 24px) 0 0;
}

.page-about .about-node {
  padding: clamp(36px, 6vw, 72px) 0;
}

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

.page-about .about-node__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

@media (min-width: 880px) {
  .page-about .about-node__grid {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: var(--about-gap);
    align-items: stretch;
  }
}

.page-about .about-node__rail {
  position: relative;
}

@media (min-width: 880px) {
  .page-about .about-node__rail {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 4px;
  }

  .page-about .about-node__rail::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 68px;
    bottom: -64px;
    width: 1px;
    background: linear-gradient(180deg, var(--line) 0%, rgba(217, 201, 166, .18) 100%);
  }

  .page-about .about-node:last-child .about-node__rail::after {
    display: none;
  }
}

.page-about .num-block {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 56px;
  height: 56px;
  background: var(--paper);
  border: 1px solid var(--gold-deep);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: .02em;
}

.page-about .about-node__body {
  min-width: 0;
}

.page-about .about-node__body > p {
  max-width: 68ch;
  margin: 0 0 16px;
  line-height: 1.9;
  color: var(--graphite);
}

.page-about .about-node__body h2 {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1.24;
  letter-spacing: -.01em;
  color: var(--ink);
  margin: 6px 0 18px;
}

.page-about .about-node__body h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(17px, 1.6vw, 20px);
  color: var(--ink);
  margin: 0 0 10px;
}

.page-about .about-node__body p a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--gold);
  text-underline-offset: 3px;
}

.page-about .about-node__body p a:hover {
  color: var(--gold-deep);
}

/* ---------- 图片容器 ---------- */
.page-about .node-figure {
  position: relative;
  overflow: hidden;
  margin: 0 0 22px;
  background: var(--sand);
  border: 1px solid var(--line);
}

.page-about .node-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(201, 162, 39, .16), rgba(201, 162, 39, 0) 58%);
  pointer-events: none;
}

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

.page-about .node-figure--banner img { aspect-ratio: 2 / 1; }
.page-about .node-figure--tall img { aspect-ratio: 4 / 3; }
.page-about .node-figure--square img { aspect-ratio: 3 / 2; }

.page-about .team-layout .node-figure {
  margin-bottom: 0;
}

.page-about .version-layout .node-figure {
  margin-bottom: 0;
}

/* ---------- 三组入口 ---------- */
.page-about .slot-list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
}

.page-about .slot-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

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

@media (min-width: 720px) {
  .page-about .slot-row {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 28px;
    align-items: start;
  }
}

.page-about .slot-key {
  display: flex;
  align-items: center;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(18px, 1.8vw, 22px);
  color: var(--ink);
}

.page-about .slot-key::before {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  background: var(--brick);
  margin-right: 10px;
}

.page-about .slot-row p {
  margin: 0;
  line-height: 1.85;
  color: var(--graphite);
}

/* ---------- 内容体系 ---------- */
.page-about .vault {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: 22px 0 20px;
}

@media (min-width: 760px) {
  .page-about .vault {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .vault-col {
  background: var(--paper);
  padding: clamp(18px, 2vw, 26px);
}

.page-about .vault-col h3 {
  margin-top: 0;
}

.page-about .tag-row {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 14px;
  padding: 0;
}

.page-about .tag-row li {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  padding: 5px 10px;
  background: var(--sand);
  border: 1px solid var(--line);
  color: var(--ink);
}

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

/* ---------- 版面沿革 ---------- */
.page-about .version-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin: 22px 0 20px;
}

@media (min-width: 900px) {
  .page-about .version-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: clamp(24px, 3vw, 44px);
    align-items: start;
  }
}

.page-about .version-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .version-item {
  position: relative;
  border-left: 1px solid var(--line);
  padding: 0 0 22px 22px;
}

.page-about .version-item:last-child {
  padding-bottom: 0;
}

.page-about .version-item::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 6px;
  width: 7px;
  height: 7px;
  background: var(--line);
}

.page-about .version-item.is-current::before {
  background: var(--gold);
}

.page-about .version-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  padding: 3px 8px;
  margin-bottom: 8px;
  background: var(--ink);
  color: var(--paper);
}

.page-about .version-item.is-current .version-tag {
  background: var(--gold-deep);
}

.page-about .version-item h3 {
  margin: 0 0 6px;
}

.page-about .version-item p {
  margin: 0;
  line-height: 1.8;
  color: var(--graphite);
  font-size: 15px;
}

/* ---------- 团队分工 ---------- */
.page-about .team-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin: 22px 0 20px;
}

@media (min-width: 860px) {
  .page-about .team-layout {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: clamp(24px, 3vw, 40px);
    align-items: start;
  }
}

.page-about .crew {
  margin: 0;
  border-top: 1px solid var(--line);
}

.page-about .crew-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 560px) {
  .page-about .crew-row {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

.page-about .crew-row dt {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
}

.page-about .crew-row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--graphite);
}

.page-about .crew-num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 600;
  color: var(--gold-deep);
  margin-right: 4px;
}

/* ---------- 会员权益 ---------- */
.page-about .perk-grid {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 22px 0 20px;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (min-width: 660px) {
  .page-about .perk-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .perk-grid > li {
  position: relative;
  background: var(--paper);
  padding: clamp(16px, 2vw, 22px);
}

.page-about .perk-grid strong {
  display: block;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 18px;
  color: var(--ink);
  margin: 10px 0 8px;
}

.page-about .perk-grid p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--graphite);
}

.page-about .perk-flag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  padding: 2px 7px;
  border: 1px solid var(--line);
  color: var(--graphite);
}

.page-about .perk-flag--new {
  background: var(--brick);
  border-color: var(--brick);
  color: var(--paper);
}

/* ---------- 收束区 ---------- */
.page-about .about-outro {
  margin-top: clamp(28px, 5vw, 56px);
  padding: clamp(36px, 6vw, 72px) 0;
  background: var(--ink-gold);
  border-top: 2px solid var(--gold);
}

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

.page-about .about-outro h2 {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1.22;
  color: var(--paper);
  margin: 8px 0 14px;
}

.page-about .about-outro p {
  max-width: 58ch;
  margin: 0 0 24px;
  line-height: 1.9;
  color: rgba(251, 246, 236, .78);
}

.page-about .about-outro__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (prefers-reduced-motion: reduce) {
  .page-about .num-block,
  .page-about .about-hero__figure::after,
  .page-about .node-figure::after {
    transition: none;
  }
}
<<<END>>>