.page-about {
  --about-line: rgba(169, 131, 92, 0.42);
  --about-line-soft: rgba(169, 131, 92, 0.24);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: 34px 0 0;
  background:
    linear-gradient(180deg, var(--paper-deep) 0%, var(--paper) 62%, var(--paper) 100%);
  border-bottom: 1px solid var(--about-line-soft);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: -60px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 1px dashed rgba(201, 154, 59, 0.35);
  pointer-events: none;
}

.page-about .about-hero__head {
  position: relative;
  z-index: 1;
  max-width: 880px;
  padding-top: 18px;
}

.page-about .about-hero h1 {
  margin: 16px 0 20px;
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 900;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .about-hero__lead {
  max-width: 62ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 34px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__meta li {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-left: 14px;
  border-left: 2px solid var(--chip-gold);
}

.page-about .about-hero__num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--mugwort-deep);
  letter-spacing: -0.02em;
}

.page-about .about-hero__label {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
}

.page-about .about-hero__media {
  position: relative;
  z-index: 1;
  margin-top: 34px;
}

.page-about .about-hero__figure {
  margin: 0;
  border: 1px solid var(--about-line);
  border-bottom: none;
  border-radius: var(--radius) var(--radius) 0 0;
  overflow: hidden;
  box-shadow: var(--shadow-2);
  background: var(--paper-deep);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

/* ---------- 主体两栏 ---------- */

.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  padding-top: 48px;
  padding-bottom: 72px;
}

/* ---------- 章节 ---------- */

.page-about .chapter {
  margin-bottom: 44px;
  padding-bottom: 44px;
  border-bottom: 1px dashed var(--about-line-soft);
}

.page-about .about-main > .chapter:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.page-about .chapter__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 18px;
}

.page-about .chapter__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--chip-gold);
}

.page-about .chapter__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 23px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
}

.page-about .chapter__body p {
  max-width: 66ch;
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink);
}

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

.page-about .chapter__body a {
  color: var(--mugwort-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--chip-gold);
  padding-bottom: 1px;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-about .chapter__body a:hover {
  color: var(--table-red);
  border-bottom-color: var(--table-red);
}

.page-about .chapter__caption {
  caption-side: top;
  padding: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  text-align: left;
}

/* ---------- 图片 ---------- */

.page-about .about-figure {
  margin: 26px 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
}

.page-about .about-figure__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ---------- 时间节点 ---------- */

.page-about .nodes {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-about .node {
  position: relative;
  padding-left: 22px;
  border-left: 2px solid var(--about-line-soft);
}

.page-about .node::before {
  content: "";
  position: absolute;
  top: 5px;
  left: -8px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--chip-gold);
  box-shadow: 0 0 0 3px var(--paper);
}

.page-about .node__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--walnut);
}

.page-about .node__title {
  margin: 6px 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .node__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 团队分工 ---------- */

.page-about .roles {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .role {
  position: relative;
  padding: 20px 20px 20px 22px;
  background: var(--paper);
  border: 1px solid var(--about-line);
  border-left: 3px solid var(--mugwort);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-1);
  transition: transform 220ms var(--ease), box-shadow 220ms var(--ease);
}

.page-about .role:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
}

.page-about .role__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--chip-gold);
}

.page-about .role__title {
  margin: 8px 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.page-about .role__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 侧栏 ---------- */

.page-about .about-aside {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-about .stat-panel {
  background: var(--paper);
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}

.page-about .stat-panel__head {
  margin: 0;
  padding: 14px 20px;
  background: var(--paper-deep);
  border-bottom: 1px solid var(--about-line);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--mugwort-deep);
}

.page-about .stat-list {
  margin: 0;
  padding: 6px 20px 12px;
  list-style: none;
}

.page-about .stat-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--about-line-soft);
}

.page-about .stat-list li:last-child {
  border-bottom: none;
}

.page-about .stat-list__label {
  font-size: 14px;
  color: var(--ink-soft);
}

.page-about .stat-list__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--walnut-deep);
}

.page-about .aside-note {
  margin: 0;
}

.page-about .aside-note a {
  color: var(--mugwort-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--chip-gold);
}

.page-about .aside-note a:hover {
  color: var(--table-red);
  border-bottom-color: var(--table-red);
}

/* ---------- 表格微调 ---------- */

.page-about .data-table {
  min-width: 520px;
}

.page-about .data-table th {
  font-size: 13px;
  letter-spacing: 0.06em;
}

.page-about .data-table td {
  font-size: 14px;
  line-height: 1.75;
  vertical-align: top;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .about-hero {
    padding-top: 46px;
  }

  .page-about .about-hero h1 {
    font-size: 36px;
  }

  .page-about .about-hero__lead {
    font-size: 17px;
  }

  .page-about .chapter__title {
    font-size: 26px;
  }

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

@media (min-width: 760px) {
  .page-about .nodes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 30px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    padding-top: 56px;
  }

  .page-about .about-hero h1 {
    font-size: 44px;
    max-width: 20ch;
  }

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

  .page-about .about-body {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: 64px;
    padding-top: 64px;
    padding-bottom: 96px;
  }

  .page-about .about-aside {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }

  .page-about .chapter {
    margin-bottom: 56px;
    padding-bottom: 56px;
  }

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

  .page-about .nodes {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    margin-top: 34px;
  }

  .page-about .node {
    padding: 26px 22px 0 0;
    border-left: none;
    border-top: 2px solid var(--about-line-soft);
  }

  .page-about .node:last-child {
    padding-right: 0;
  }

  .page-about .node::before {
    top: -8px;
    left: 0;
  }

  .page-about .node__year {
    font-size: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .role {
    transition: none;
  }
}
<<<END>>