.page-about {
  --about-hair: rgba(201, 162, 39, 0.32);
  --about-gridline: rgba(11, 22, 32, 0.08);
  display: block;
}

.page-about .about-wrap {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ——— 面包屑 ——— */
.page-about .about-crumbs {
  padding-top: clamp(16px, 2.4vw, 26px);
  padding-bottom: clamp(10px, 1.6vw, 16px);
}

/* ——— 首屏框景 ——— */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(48px, 6.6vw, 88px) 0 clamp(32px, 4.6vw, 58px);
  color: var(--c-mist);
  background:
    radial-gradient(120% 92% at 84% 4%, rgba(201, 162, 39, 0.28), rgba(201, 162, 39, 0) 58%),
    linear-gradient(155deg, var(--c-night) 0%, var(--c-tianshan) 62%, #143f5e 100%);
  border-bottom: 3px solid var(--c-gold);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 22px;
  pointer-events: none;
  opacity: 0.42;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(201, 162, 39, 0.75) 0 1px,
    transparent 1px 26px
  );
}

.page-about .about-hero-grid {
  display: grid;
  gap: clamp(28px, 4.2vw, 56px);
}

@media (min-width: 980px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: end;
  }
}

.page-about .eyebrow {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.28em;
  color: var(--c-gold);
  margin: 0;
}

.page-about .about-hero h1 {
  font-family: var(--f-head);
  font-weight: 500;
  font-size: clamp(30px, 5.4vw, 58px);
  line-height: 1.18;
  letter-spacing: 0.01em;
  color: var(--c-mist);
  margin: 0.34em 0 0.42em;
  max-width: 22ch;
}

.page-about .about-hero-text {
  margin: 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.5vw, 17.5px);
  line-height: 1.88;
  color: rgba(251, 249, 245, 0.82);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 2.8vw, 32px);
}

.page-about .about-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(251, 249, 245, 0.18);
  border: 1px solid rgba(251, 249, 245, 0.22);
}

.page-about .about-stat {
  background: rgba(14, 42, 71, 0.62);
  padding: clamp(14px, 1.8vw, 20px) clamp(12px, 1.6vw, 18px);
}

.page-about .about-stat-num {
  display: block;
  font-family: var(--f-mono);
  font-size: clamp(20px, 2.8vw, 30px);
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--c-gold);
}

.page-about .about-stat-label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: rgba(251, 249, 245, 0.62);
}

/* ——— 正文骨架：侧栏索引 + 章节 ——— */
.page-about .about-body {
  display: grid;
  gap: clamp(30px, 4vw, 56px);
  padding-top: clamp(34px, 5vw, 64px);
  padding-bottom: clamp(44px, 6vw, 92px);
}

@media (min-width: 1000px) {
  .page-about .about-body {
    grid-template-columns: 200px minmax(0, 1fr);
    align-items: start;
  }
}

.page-about .about-side {
  border-top: 2px solid var(--c-gold);
  padding-top: 16px;
}

@media (min-width: 1000px) {
  .page-about .about-side {
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }
}

.page-about .about-side-title {
  margin: 0 0 12px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--c-bronze);
}

.page-about .about-side ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .about-side a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 8px 10px 8px 8px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--c-ink-72);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color var(--dur), border-color var(--dur), background-color var(--dur);
}

.page-about .about-side a:hover,
.page-about .about-side a.is-active {
  color: var(--c-tianshan);
  border-left-color: var(--c-gold);
  background: rgba(201, 162, 39, 0.09);
}

.page-about .about-side a .num {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--c-gold);
}

@media (max-width: 999px) {
  .page-about .about-side ol {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    padding-bottom: 6px;
  }
  .page-about .about-side a {
    white-space: nowrap;
    border-left: 0;
    border-bottom: 2px solid transparent;
    padding: 8px 4px;
    font-size: 13px;
  }
  .page-about .about-side a:hover,
  .page-about .about-side a.is-active {
    background: transparent;
    border-bottom-color: var(--c-gold);
  }
}

.page-about .about-sections {
  min-width: 0;
  display: grid;
  gap: clamp(44px, 6vw, 86px);
}

/* ——— 编号章节 ——— */
.page-about .chapter {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-about .chapter-head {
  display: grid;
  gap: 10px;
  padding-top: clamp(14px, 2vw, 22px);
  margin-bottom: clamp(22px, 3vw, 34px);
  border-top: 1px solid var(--c-line);
  position: relative;
}

.page-about .chapter-head::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 64px;
  height: 2px;
  background: var(--c-gold);
}

.page-about .chapter-index {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--c-gold);
}

.page-about .chapter-title {
  margin: 0;
  font-family: var(--f-head);
  font-weight: 500;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.26;
  color: var(--c-ink);
}

.page-about .chapter-lead {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.82;
  color: var(--c-ink-72);
}

.page-about .prose p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--c-ink-72);
}

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

.page-about .note {
  font-family: var(--f-mono);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--c-bronze);
  padding-left: 12px;
  border-left: 2px solid var(--about-hair);
}

/* ——— 01 起源 ——— */
.page-about .origin-grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
}

@media (min-width: 900px) {
  .page-about .origin-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }
}

.page-about .brand-figure {
  position: relative;
  margin: 0;
  padding: 14px;
  border: 1px solid var(--about-hair);
  background: linear-gradient(150deg, var(--c-night) 0%, var(--c-tianshan) 100%);
}

.page-about .brand-figure::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 36px;
  height: 36px;
  background: var(--c-gold);
  clip-path: polygon(0 0, 100% 0, 0 100%);
}

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

/* ——— 02 时间线 ——— */
.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .tl-item {
  position: relative;
  padding-left: clamp(34px, 4.6vw, 60px);
  padding-bottom: clamp(22px, 3.2vw, 38px);
}

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

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 13px;
  height: 13px;
  border: 1px solid var(--c-gold);
  background: var(--c-mist);
  transform: rotate(45deg);
  z-index: 1;
}

.page-about .tl-item::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 26px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, rgba(201, 162, 39, 0.55), rgba(201, 162, 39, 0.06));
}

.page-about .tl-item:last-child::after {
  content: none;
}

.page-about .tl-card {
  position: relative;
  background: var(--c-mist);
  border: 1px solid var(--c-line);
  border-top: 2px solid var(--c-tianshan);
  padding: clamp(16px, 2.2vw, 24px) clamp(16px, 2.4vw, 28px);
}

.page-about .tl-item:nth-child(even) .tl-card {
  background: #F1F6FA;
  border-top-color: var(--c-gold);
}

.page-about .tl-stage {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--c-bronze);
}

.page-about .tl-title {
  margin: 0 0 8px;
  font-family: var(--f-head);
  font-weight: 500;
  font-size: clamp(18px, 2.2vw, 23px);
  line-height: 1.35;
  color: var(--c-ink);
}

.page-about .tl-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-ink-72);
}

/* ——— 03 团队 ——— */
.page-about .team-grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
}

@media (min-width: 900px) {
  .page-about .team-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }
}

.page-about .team-folds {
  border-top: 1px solid var(--c-line);
}

.page-about .about-fold {
  border-bottom: 1px solid var(--c-line);
}

.page-about .about-fold > .fold-trigger {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--f-head);
  font-size: clamp(16px, 1.9vw, 20px);
  line-height: 1.4;
  color: var(--c-ink);
  transition: color var(--dur);
}

.page-about .about-fold > .fold-trigger::-webkit-details-marker {
  display: none;
}

.page-about .about-fold > .fold-trigger:hover {
  color: var(--c-tianshan);
}

.page-about .about-fold .fold-label .num {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-gold);
  margin-right: 10px;
}

.page-about .about-fold .fold-mark {
  font-family: var(--f-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--c-gold);
  transition: transform var(--dur);
}

.page-about .about-fold[open] .fold-mark {
  transform: rotate(45deg);
}

.page-about .about-fold > .fold-panel {
  padding: 0 0 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-ink-72);
}

.page-about .about-fold > .fold-panel p {
  margin: 0;
}

.page-about .about-fold > .fold-panel a {
  color: var(--c-tianshan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .team-figure {
  margin: 0;
  padding: 12px;
  background: var(--c-mist);
  border: 1px solid var(--c-line);
}

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

.page-about .team-figure .media-caption,
.page-about .geo-figure .media-caption {
  display: block;
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--c-bronze);
}

/* ——— 04 地域 ——— */
.page-about .geo-grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
}

@media (min-width: 900px) {
  .page-about .geo-grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: center;
  }
}

.page-about .geo-figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--about-hair);
}

.page-about .geo-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-about .geo-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(210deg, rgba(14, 42, 71, 0.42) 0%, rgba(27, 79, 114, 0.08) 55%, transparent 100%);
}

.page-about .geo-figure .media-caption {
  position: absolute;
  left: 14px;
  bottom: 12px;
  right: 14px;
  z-index: 2;
  margin: 0;
  color: rgba(251, 249, 245, 0.86);
  text-shadow: 0 1px 6px rgba(11, 22, 32, 0.6);
}

/* ——— 艾德莱斯纹样分隔 ——— */
.page-about .adelais-rule {
  height: 6px;
  opacity: 0.7;
  background: repeating-linear-gradient(
    115deg,
    var(--c-gold) 0 10px,
    transparent 10px 16px,
    var(--c-rose) 16px 24px,
    transparent 24px 32px
  );
}

/* ——— 05 优势网格 ——— */
.page-about .reason-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(238px, 1fr));
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-about .reason {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--c-mist);
  transition: background-color var(--dur);
}

.page-about .reason::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 34px;
  height: 2px;
  background: var(--c-gold);
}

.page-about .reason:hover {
  background: #FDFBF6;
}

.page-about .reason-num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--c-bronze);
}

.page-about .reason h3 {
  margin: 0 0 8px;
  font-family: var(--f-head);
  font-weight: 500;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.4;
  color: var(--c-ink);
}

.page-about .reason p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--c-ink-72);
}

/* ——— 结尾行动区 ——— */
.page-about .about-cta {
  position: relative;
  overflow: hidden;
  margin-top: clamp(40px, 5.6vw, 74px);
  padding: clamp(28px, 4.4vw, 52px) clamp(22px, 3.6vw, 48px);
  color: var(--c-mist);
  background: linear-gradient(120deg, var(--c-night) 0%, var(--c-tianshan) 72%, #17506f 100%);
  display: grid;
  gap: clamp(22px, 3vw, 38px);
}

.page-about .about-cta::before {
  content: "";
  position: absolute;
  top: -46px;
  right: -70px;
  width: 250px;
  height: 250px;
  pointer-events: none;
  background: radial-gradient(circle, rgba(201, 162, 39, 0.34), transparent 68%);
}

@media (min-width: 880px) {
  .page-about .about-cta {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: center;
  }
}

.page-about .about-cta h2 {
  margin: 0 0 12px;
  font-family: var(--f-head);
  font-weight: 500;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.32;
  color: var(--c-mist);
}

.page-about .about-cta p {
  margin: 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(251, 249, 245, 0.78);
}

.page-about .about-cta-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-cta-alt {
  flex-basis: 100%;
  margin-top: 4px;
  font-size: 13.5px !important;
  line-height: 1.8 !important;
  color: rgba(251, 249, 245, 0.62) !important;
}

.page-about .about-cta-alt a {
  color: var(--c-gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}
<<<END>>>