.page-about {
  --about-rail-gap: clamp(20px, 4vw, 56px);
  --about-node-1: #2E8B7A;
  --about-node-2: #4A8C74;
  --about-node-3: #9B7A4E;
  --about-node-4: #F26A2E;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 20px 0 0;
  font-size: 14px;
  color: var(--muted);
}
.page-about .breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--paper-line);
}
.page-about .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
}
.page-about .breadcrumbs a:hover { color: var(--orange-deep); }
.page-about .breadcrumbs [aria-current="page"] { color: var(--ink); }

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(36px, 6vw, 72px) 0 clamp(40px, 6vw, 88px);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(255, 217, 192, .5) 0%, rgba(255, 217, 192, 0) 60%),
    linear-gradient(180deg, var(--paper) 0%, #F2F0E9 100%);
  border-bottom: 1px solid var(--paper-line);
}
.page-about .about-hero-grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}
.page-about .about-hero-lead .eyebrow {
  color: var(--violet);
  letter-spacing: .18em;
  font-size: 12px;
  text-transform: uppercase;
}
.page-about .about-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-size: clamp(2.1rem, 6.4vw, 4.2rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--ink);
}
.page-about .about-hero .lede {
  margin-top: 20px;
  max-width: 46ch;
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.85;
  color: var(--muted);
}
.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.page-about .about-hero-foot {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--paper-line);
  border: 1px solid var(--paper-line);
  border-radius: 2px;
  overflow: hidden;
}
.page-about .about-hero-fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px;
  background: var(--white);
  margin: 0;
}
.page-about .about-hero-num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  color: var(--indigo);
  line-height: 1;
}
.page-about .about-hero-label {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: .04em;
}

/* ---------- 起点：旁注 + 正文 ---------- */
.page-about .about-origin {
  background: var(--paper);
}
.page-about .about-origin-grid {
  display: grid;
  gap: clamp(24px, 3.5vw, 44px);
  grid-template-columns: 1fr;
}
.page-about .about-margin {
  order: -1;
  border-left: 2px solid var(--paper-line);
  padding-left: 18px;
}
.page-about .about-margin .annot-vertical {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--celadon);
  margin: 0 0 14px;
}
.page-about .about-margin-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 32ch;
}
.page-about .about-body .section-title {
  margin: 0 0 18px;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 700;
  color: var(--ink);
}
.page-about .about-body p {
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink);
  margin: 0 0 18px;
}
.page-about .about-body p:last-child { margin-bottom: 0; }
.page-about .about-body a {
  color: var(--orange-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline-section {
  background: linear-gradient(180deg, #F2F0E9 0%, var(--paper) 40%);
  border-top: 1px solid var(--paper-line);
  border-bottom: 1px solid var(--paper-line);
}
.page-about .about-section-head { max-width: 62ch; }
.page-about .about-section-head .eyebrow {
  color: var(--wine);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.page-about .about-section-lede {
  margin-top: 12px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}
.page-about .about-timeline-figure {
  margin: clamp(24px, 4vw, 40px) 0 clamp(28px, 4vw, 44px);
  border: 1px solid var(--paper-line);
  background: var(--white);
}
.page-about .about-timeline-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-timeline-figure .figure-caption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--paper-line);
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
  position: relative;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--about-node-1), var(--about-node-4));
}
.page-about .about-timeline-item {
  position: relative;
  padding: 0 0 clamp(24px, 3vw, 34px) 6px;
  outline: none;
}
.page-about .about-timeline-item:last-child { padding-bottom: 0; }
.page-about .about-timeline-dot {
  position: absolute;
  left: -26px;
  top: 6px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--about-node-1);
  border: 3px solid var(--paper);
  box-shadow: 0 0 0 1px var(--paper-line);
  transition: transform .24s var(--ease), background .24s var(--ease);
}
.page-about .about-timeline-item:nth-child(2) .about-timeline-dot { background: var(--about-node-2); }
.page-about .about-timeline-item:nth-child(3) .about-timeline-dot { background: var(--about-node-3); }
.page-about .about-timeline-item:nth-child(4) .about-timeline-dot { background: var(--about-node-4); }
.page-about .about-timeline-item:hover .about-timeline-dot,
.page-about .about-timeline-item:focus-visible .about-timeline-dot {
  transform: scale(1.28);
}
.page-about .about-timeline-item .timeline-year {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--muted);
  margin: 0 0 6px;
}
.page-about .about-timeline-title {
  margin: 0 0 8px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ink);
}
.page-about .about-timeline-text {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 60ch;
}
.page-about .about-timeline-hidden {
  max-height: 0;
  overflow: hidden;
  margin: 0;
  opacity: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
  border-left: 2px solid var(--apricot);
  padding-left: 0;
  transition: max-height .32s var(--ease), opacity .24s var(--ease), padding .24s var(--ease), margin .24s var(--ease);
}
.page-about .about-timeline-item:hover .about-timeline-hidden,
.page-about .about-timeline-item:focus-within .about-timeline-hidden,
.page-about .about-timeline-item:focus-visible .about-timeline-hidden {
  max-height: 220px;
  opacity: 1;
  margin-top: 12px;
  padding-left: 14px;
}

/* ---------- 今天的规模 ---------- */
.page-about .about-scale {
  background: var(--indigo);
  color: var(--white);
}
.page-about .about-scale .eyebrow {
  color: var(--apricot);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.page-about .about-scale .section-title {
  color: var(--white);
  margin: 10px 0 28px;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
}
.page-about .about-scale-grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  grid-template-columns: 1fr;
}
.page-about .about-stat-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}
.page-about .about-stat {
  border: 1px solid rgba(255, 255, 255, .22);
  border-radius: 2px;
  padding: 20px 18px;
  background: rgba(255, 255, 255, .04);
  transition: border-color .24s var(--ease), transform .24s var(--ease);
}
.page-about .about-stat:hover {
  border-color: var(--orange);
  transform: translateY(-2px);
}
.page-about .about-stat--b { margin-top: 0; }
.page-about .about-stat--d { background: rgba(46, 139, 122, .18); }
.page-about .about-stat-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(2rem, 5vw, 2.9rem);
  font-weight: 700;
  line-height: 1;
  color: var(--apricot);
}
.page-about .about-stat-unit {
  font-size: .45em;
  margin-left: 3px;
  color: var(--apricot);
}
.page-about .about-stat-label {
  margin: 10px 0 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
}
.page-about .about-stat-note {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .74);
}
.page-about .about-scale-tail {
  margin-top: 26px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .82);
}
.page-about .about-scale-tail a {
  color: var(--apricot);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-about .about-scale-figure {
  margin: 0;
  border: 1px solid rgba(255, 255, 255, .22);
  background: rgba(255, 255, 255, .04);
}
.page-about .about-scale-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-scale-figure .figure-caption {
  padding: 10px 14px;
  font-size: 13px;
  color: rgba(255, 255, 255, .7);
  border-top: 1px solid rgba(255, 255, 255, .18);
}

/* ---------- 行业 ---------- */
.page-about .about-industry {
  background: var(--paper);
}
.page-about .about-industry-grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  grid-template-columns: 1fr;
  margin-top: 30px;
}
.page-about .about-industry-bars {
  display: grid;
  gap: 18px;
}
.page-about .about-bar-row {
  display: grid;
  grid-template-columns: 84px 1fr 48px;
  grid-template-areas:
    "name track value"
    "desc desc desc";
  align-items: center;
  gap: 6px 12px;
  padding: 14px 16px;
  border: 1px solid var(--paper-line);
  border-left: 3px solid var(--celadon);
  background: var(--white);
  transition: border-left-color .24s var(--ease), transform .24s var(--ease);
}
.page-about .about-bar-row:hover {
  border-left-color: var(--orange);
  transform: translateX(3px);
}
.page-about .about-bar-name {
  grid-area: name;
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}
.page-about .about-bar-track {
  grid-area: track;
  position: relative;
  height: 8px;
  background: var(--celadon-light);
  border-radius: 4px;
  overflow: hidden;
}
.page-about .about-bar-fill {
  display: block;
  width: var(--w, 0%);
  height: 100%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--celadon), var(--orange));
}
.page-about .about-bar-value {
  grid-area: value;
  margin: 0;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--indigo);
}
.page-about .about-bar-desc {
  grid-area: desc;
  margin: 2px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}
.page-about .about-industry-figure {
  margin: 0;
  border: 1px solid var(--paper-line);
  background: var(--indigo);
}
.page-about .about-industry-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-industry-figure .figure-caption {
  padding: 10px 14px;
  font-size: 13px;
  color: rgba(255, 255, 255, .78);
  border-top: 1px solid rgba(255, 255, 255, .18);
}
.page-about .about-industry-tail {
  margin-top: 26px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}
.page-about .about-industry-tail a {
  color: var(--orange-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 四条原则 ---------- */
.page-about .about-principles {
  background: linear-gradient(180deg, var(--paper) 0%, #F1EFE8 100%);
  border-top: 1px solid var(--paper-line);
  border-bottom: 1px solid var(--paper-line);
}
.page-about .about-principles-grid {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}
.page-about .about-principle {
  border: 1px solid var(--paper-line);
  background: var(--white);
  transition: border-color .24s var(--ease);
}
.page-about .about-principle[open] {
  border-color: var(--violet);
}
.page-about .about-principle > summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 18px;
  cursor: pointer;
  list-style: none;
}
.page-about .about-principle > summary::-webkit-details-marker { display: none; }
.page-about .about-principle-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--violet);
}
.page-about .about-principle-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
}
.page-about .about-principle > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--orange);
}
.page-about .about-principle[open] > summary::after { content: "–"; }
.page-about .about-principle .disclosure-body {
  padding: 0 18px 20px;
  border-top: 1px solid var(--paper-line);
  margin-top: -1px;
  padding-top: 16px;
}
.page-about .about-principle .disclosure-body p {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 接下来一年 ---------- */
.page-about .about-next {
  background: var(--paper);
}
.page-about .about-next-inner {
  max-width: 900px;
}
.page-about .about-next .eyebrow {
  color: var(--celadon);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.page-about .about-next .section-title {
  margin: 10px 0 30px;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  color: var(--ink);
}
.page-about .about-next-list {
  display: grid;
  gap: 22px;
}
.page-about .about-next-item {
  padding-left: 20px;
  border-left: 3px solid var(--celadon-light);
  transition: border-left-color .24s var(--ease);
}
.page-about .about-next-item:hover { border-left-color: var(--celadon); }
.page-about .about-next-item .sub-title {
  margin: 0 0 8px;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
}
.page-about .about-next-item p {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 62ch;
}
.page-about .about-next-tail {
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--paper-line);
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}
.page-about .about-next-tail a {
  color: var(--orange-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: end;
  }
  .page-about .about-hero-foot {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .page-about .about-hero-fact {
    flex-direction: row;
    align-items: baseline;
    gap: 12px;
    border-bottom: 1px solid var(--paper-line);
  }
  .page-about .about-hero-fact:last-child { border-bottom: 0; }
  .page-about .about-bar-row {
    grid-template-columns: 110px minmax(0, 1fr) 56px;
    grid-template-areas:
      "name track value"
      "desc desc desc";
  }
  .page-about .about-principles-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-about .about-origin-grid {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }
  .page-about .about-margin {
    position: sticky;
    top: 96px;
    border-left: 0;
    border-top: 2px solid var(--paper-line);
    padding-left: 0;
    padding-top: 16px;
  }
  .page-about .about-margin .annot-vertical { margin-left: 2px; }

  .page-about .about-scale-grid {
    grid-template-columns: minmax(0, 1.75fr) minmax(0, 1fr);
    align-items: start;
  }
  .page-about .about-stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-stat--b { transform: translateY(18px); }
  .page-about .about-stat--b:hover { transform: translateY(16px); }
  .page-about .about-stat--d { transform: translateY(-6px); }
  .page-about .about-stat--d:hover { transform: translateY(-8px); }

  .page-about .about-industry-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }
  .page-about .about-industry-figure { position: sticky; top: 96px; }

  .page-about .about-principles-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
  .page-about .about-timeline {
    padding-left: 34px;
  }
  .page-about .about-timeline::before { left: 8px; }
  .page-about .about-timeline-dot { left: -34px; }
}

@media (min-width: 1180px) {
  .page-about .about-next-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-timeline-hidden {
    max-height: none;
    opacity: 1;
    margin-top: 12px;
    padding-left: 14px;
    transition: none;
  }
  .page-about .about-stat,
  .page-about .about-bar-row,
  .page-about .about-timeline-dot,
  .page-about .about-next-item {
    transition: none;
  }
  .page-about .about-stat--b,
  .page-about .about-stat--d { transform: none; }
}
</｜｜DSML｜｜ parameter>
</invoke>

.page-about {
  --w: 1rem;
}