.page-about {
  background-color: var(--ivory);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 22px 20px 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: #6d7f78;
}

.page-about .breadcrumb a {
  color: var(--green-deep);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-about .breadcrumb a:hover {
  color: var(--vermillion-dark);
  border-bottom-color: var(--vermillion);
}

.page-about .breadcrumb__sep {
  color: var(--sand);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 24px 20px 44px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(32px, 7.4vw, 58px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--green-deep);
}

.page-about .about-lede {
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: #33443d;
}

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

.page-about .about-hero__actions .btn {
  text-decoration: none;
}

.page-about .about-facts {
  align-self: start;
  padding: 22px 22px 20px;
  border-radius: var(--radius-lg);
  background-color: var(--green-deep);
  background-image: radial-gradient(circle at 100% 0%, rgba(201, 166, 91, 0.26), transparent 58%);
  color: var(--ivory);
  box-shadow: var(--shadow-soft);
}

.page-about .about-facts__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-light);
}

.page-about .about-facts__list {
  margin: 16px 0 0;
  display: grid;
  gap: 0;
}

.page-about .about-facts .fact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px dashed rgba(231, 206, 148, 0.3);
}

.page-about .about-facts .fact:last-child {
  border-bottom: 0;
}

.page-about .fact__label {
  font-size: 13px;
  color: var(--mist);
  letter-spacing: 0.02em;
}

.page-about .fact__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--gold-light);
  white-space: nowrap;
}

.page-about .about-facts__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid rgba(169, 196, 191, 0.28);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 章节骨架 ---------- */

.page-about .about-section {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 40px 20px;
  border-top: 1px solid var(--sand);
}

.page-about .about-head {
  display: grid;
  gap: 10px;
  margin-bottom: 26px;
}

.page-about .about-head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(25px, 5vw, 36px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--green-deep);
}

.page-about .about-head p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: #44564e;
}

.page-about .about-head .index-num {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.16em;
  color: var(--vermillion);
}

/* ---------- 起源 ---------- */

.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-about .about-prose p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.85;
  color: #2f4239;
}

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

.page-about .about-figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--sand);
  background-color: var(--sand);
}

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

.page-about .about-figure__caption {
  padding: 12px 16px 14px;
  background-color: #fffdf7;
  font-size: 13px;
  line-height: 1.65;
  color: #5a6b63;
}

.page-about .about-figure--wide {
  margin-top: 30px;
}

/* ---------- 时间线 ---------- */

.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 18px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(to bottom, var(--gold) 0%, var(--celadon) 52%, rgba(95, 145, 140, 0.14) 100%);
}

.page-about .about-timeline__item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.page-about .about-year {
  position: relative;
  z-index: 1;
  display: block;
  padding: 7px 2px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--green-deep);
  background-color: var(--ivory);
  border: 1.5px solid var(--gold);
  border-radius: var(--radius-pill);
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-node {
  padding: 16px 18px 18px;
  border: 1px solid var(--sand);
  border-radius: var(--radius-lg);
  background-color: #fffdf7;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-about .about-node:hover,
.page-about .about-node:focus-within {
  transform: translateY(-2px);
  border-color: var(--gold);
  box-shadow: var(--shadow-soft);
}

.page-about .about-timeline__item:hover .about-year,
.page-about .about-timeline__item:focus-within .about-year {
  background-color: var(--vermillion);
  border-color: var(--vermillion);
  color: var(--ivory);
}

.page-about .about-node__tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background-color: rgba(95, 145, 140, 0.16);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: #3d6b66;
}

.page-about .about-node h3 {
  margin: 10px 0 8px;
  font-family: var(--font-head);
  font-size: 20px;
  line-height: 1.4;
  color: var(--green-deep);
}

.page-about .about-node p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: #3d4f47;
}

.page-about .about-node__detail {
  margin-top: 10px;
  padding-left: 12px;
  border-left: 2px solid rgba(201, 166, 91, 0.55);
  font-size: 13px;
  color: #5f7068;
}

/* ---------- 团队 ---------- */

.page-about .about-team-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  align-content: start;
}

.page-about .about-role {
  position: relative;
  padding: 18px 18px 18px 20px;
  border: 1px solid var(--sand);
  border-radius: var(--radius-md);
  background-color: #fffcf4;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-about .about-role:hover {
  border-color: var(--celadon);
  transform: translateY(-2px);
}

.page-about .about-role__count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--vermillion);
  color: var(--ivory);
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
}

.page-about .about-role__title {
  margin: 10px 0 6px;
  font-family: var(--font-head);
  font-size: 19px;
  color: var(--green-deep);
}

.page-about .about-role p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: #3d4f47;
}

.page-about .about-fold {
  margin-top: 22px;
  border: 1px solid var(--sand);
  border-radius: var(--radius-md);
  background-color: rgba(169, 196, 191, 0.14);
  overflow: hidden;
}

.page-about .about-fold__summary {
  padding: 16px 18px;
  cursor: pointer;
  font-family: var(--font-head);
  font-size: 17px;
  color: var(--green-deep);
  list-style: none;
}

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

.page-about .about-fold__summary::before {
  content: "＋";
  margin-right: 10px;
  font-family: var(--font-mono);
  color: var(--vermillion);
}

.page-about .about-fold[open] .about-fold__summary::before {
  content: "－";
}

.page-about .about-fold__body {
  padding: 0 18px 18px;
}

.page-about .about-fold__body p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.85;
  color: #34463e;
}

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

/* ---------- 对照表 ---------- */

.page-about .about-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--sand);
  border-radius: var(--radius-lg);
  background-color: #fffdf7;
}

.page-about .about-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-about .about-table caption {
  caption-side: top;
  padding: 14px 16px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: #6d7f78;
  border-bottom: 1px solid var(--sand);
}

.page-about .about-table thead th {
  padding: 12px 16px;
  text-align: left;
  background-color: var(--green-deep);
  color: var(--gold-light);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.page-about .about-table tbody th {
  padding: 13px 16px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--green-deep);
  white-space: nowrap;
  border-bottom: 1px solid var(--sand);
}

.page-about .about-table tbody td {
  padding: 13px 16px;
  line-height: 1.7;
  color: #3d4f47;
  border-bottom: 1px solid var(--sand);
  transition: background-color 0.18s ease;
}

.page-about .about-table tbody tr:last-child th,
.page-about .about-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-about .about-table tbody tr:hover th {
  color: var(--vermillion-dark);
}

.page-about .about-table tbody tr:hover td {
  background-color: rgba(95, 145, 140, 0.13);
}

.page-about .about-after-table {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: #44564e;
}

.page-about .about-after-table a {
  color: var(--vermillion-dark);
  text-decoration: none;
  border-bottom: 1px solid rgba(180, 58, 47, 0.4);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-about .about-after-table a:hover {
  color: var(--green-deep);
  border-bottom-color: var(--gold);
}

/* ---------- 地区与合作 ---------- */

.page-about .about-region {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-about .about-region__main p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: #2f4239;
}

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

.page-about .about-partners {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-about .about-partner {
  display: grid;
  gap: 4px;
  padding: 15px 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(95, 145, 140, 0.35);
  background-color: rgba(169, 196, 191, 0.16);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-about .about-partner:hover {
  border-color: var(--celadon);
  background-color: rgba(169, 196, 191, 0.3);
}

.page-about .about-partner__type {
  font-family: var(--font-head);
  font-size: 17px;
  color: var(--green-deep);
}

.page-about .about-partner__desc {
  font-size: 13px;
  line-height: 1.7;
  color: #4a5c54;
}

/* ---------- 荣誉与订阅 ---------- */

.page-about .about-honors {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .about-honor {
  padding: 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--sand);
  border-top: 3px solid var(--gold);
  background-color: #fffdf7;
}

.page-about .about-honor__year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--vermillion);
}

.page-about .about-honor__title {
  margin: 8px 0 8px;
  font-family: var(--font-head);
  font-size: 18px;
  line-height: 1.45;
  color: var(--green-deep);
}

.page-about .about-honor p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: #3d4f47;
}

.page-about .about-honor--stat {
  border-top-color: var(--celadon);
  background-color: rgba(169, 196, 191, 0.16);
}

.page-about .about-cta {
  margin-top: 28px;
  padding: 24px 22px;
  border-radius: var(--radius-xl);
  background-color: var(--green-deep);
  background-image: radial-gradient(circle at 88% 12%, rgba(201, 166, 91, 0.24), transparent 60%);
  color: var(--ivory);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  box-shadow: var(--shadow-soft);
}

.page-about .about-cta h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 22px;
  line-height: 1.4;
  color: var(--ivory);
}

.page-about .about-cta p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

.page-about .about-toggle {
  padding: 12px 22px;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 14px;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

.page-about .about-toggle:active {
  transform: translateY(1px);
}

.page-about .about-toggle--gold {
  border: 1.5px solid var(--gold);
  background-color: var(--gold);
  color: var(--green-ink);
  font-weight: 700;
}

.page-about .about-toggle--gold:hover {
  background-color: var(--gold-light);
  border-color: var(--gold-light);
}

.page-about .about-toggle--gold[aria-pressed="true"] {
  background-color: transparent;
  color: var(--gold-light);
}

.page-about .about-toggle--ghost {
  border: 1.5px solid rgba(169, 196, 191, 0.6);
  background-color: transparent;
  color: var(--ivory);
}

.page-about .about-toggle--ghost:hover {
  border-color: var(--gold-light);
  color: var(--gold-light);
}

.page-about .about-toggle--ghost[aria-pressed="true"] {
  background-color: rgba(201, 166, 91, 0.2);
  border-color: var(--gold-light);
  color: var(--gold-light);
}

.page-about .about-tail {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: #44564e;
}

.page-about .about-tail a {
  color: var(--vermillion-dark);
  text-decoration: none;
  border-bottom: 1px solid rgba(180, 58, 47, 0.4);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-about .about-tail a:hover {
  color: var(--green-deep);
  border-bottom-color: var(--gold);
}

/* ---------- 中等屏 ---------- */

@media (min-width: 640px) {
  .page-about .about-hero,
  .page-about .about-section {
    padding-inline: 28px;
  }

  .page-about .breadcrumb {
    padding-inline: 28px;
  }

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

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

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
    padding: 28px 26px;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 48px;
    padding-top: 36px;
    padding-bottom: 64px;
  }

  .page-about .about-section {
    padding-top: 62px;
    padding-bottom: 62px;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-region {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 36px;
    align-items: start;
  }

  .page-about .about-team-layout {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  .page-about .about-timeline {
    gap: 22px;
  }

  .page-about .about-timeline::before {
    left: 45px;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 22px;
  }

  .page-about .about-year {
    padding: 9px 6px;
    font-size: 14px;
  }

  .page-about .about-node {
    padding: 20px 24px 22px;
  }

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

@media (min-width: 1080px) {
  .page-about .about-hero h1 {
    margin-top: 16px;
  }

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

/* ---------- 悬停展开版本说明 ---------- */

@media (hover: hover) and (min-width: 900px) {
  .page-about .about-node__detail {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.32s ease, opacity 0.28s ease, margin-top 0.28s ease;
  }

  .page-about .about-node:hover .about-node__detail,
  .page-about .about-node:focus-within .about-node__detail {
    max-height: 14rem;
    margin-top: 12px;
    opacity: 1;
  }
}
<<<END>>>