.page-about {
  --about-grid-line: rgba(201, 164, 90, 0.06);
  background:
    linear-gradient(var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid-line) 1px, transparent 1px);
  background-size: 44px 44px;
  color: var(--text-main);
  overflow-x: hidden;
}

.page-about a:not(.btn) {
  color: var(--gold);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.page-about a:not(.btn):hover {
  color: var(--gold-light);
}

.page-about .about-breadcrumb-wrap {
  max-width: var(--max-width);
  margin-inline: auto;
  padding: 1.4rem 1.25rem 0;
}

.page-about .about-hero {
  max-width: var(--max-width);
  margin-inline: auto;
  padding: 2.6rem 1.25rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.page-about .about-rail {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.page-about .about-rail-cn {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 3.2rem;
  line-height: 1.1;
  letter-spacing: 0.22em;
  color: var(--gold);
  opacity: 0.92;
}

.page-about .about-rail-en {
  writing-mode: vertical-rl;
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--text-muted);
  opacity: 0.7;
  padding-top: 0.35rem;
}

.page-about .about-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  border-left: 3px solid var(--gold-dark);
  padding-left: 0.8rem;
  margin-bottom: 1rem;
}

.page-about .about-intro h1 {
  font-family: var(--font-display);
  font-size: 2.45rem;
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: 0.01em;
  margin: 0 0 0.35rem;
  color: var(--text-main);
}

.page-about .about-sub {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--gold);
  margin-bottom: 1.35rem;
}

.page-about .about-lead {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-main);
  margin-bottom: 0.85rem;
}

.page-about .about-desc {
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--text-muted);
  margin-bottom: 1.6rem;
}

.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.page-about .about-hero-media {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--bg-panel);
  padding: 0.5rem;
}

.page-about .about-hero-media img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-scale {
  margin-top: 2.2rem;
  background: var(--bg-panel);
  border-block: 1px solid var(--line);
  padding-block: 2.5rem;
}

.page-about .about-scale-inner {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.page-about .about-scale-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.8rem;
  margin-bottom: 1.5rem;
}

.page-about .about-scale-head h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  margin: 0;
}

.page-about .about-scale-head-note {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
}

.page-about .about-band-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-stat {
  background: var(--bg-deep);
  padding: 1.6rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: background-color var(--transition-fast);
}

.page-about .about-stat:hover {
  background: var(--bg-panel-hover);
}

.page-about .about-stat .stat-number {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
  transition: color var(--transition-fast);
}

.page-about .about-stat:hover .stat-number {
  color: var(--gold-light);
}

.page-about .about-unit {
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-left: 0.15rem;
}

.page-about .about-stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.page-about .about-scale-note {
  margin-top: 1.3rem;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--text-muted);
}

.page-about .about-split {
  max-width: var(--max-width);
  margin-inline: auto;
  padding: 3rem 1.25rem;
  display: grid;
  gap: 3rem;
}

.page-about .about-platform {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.page-about .about-split-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.85rem;
}

.page-about .about-split-head h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0;
}

.page-about .about-split-head .section-index {
  font-size: 0.85rem;
  color: var(--gold);
}

.page-about .about-dual-item {
  position: relative;
  border: 1px solid var(--line);
  background: var(--bg-panel);
  padding: 1.5rem 1.4rem;
  transition: border-color var(--transition-base), background-color var(--transition-base);
}

.page-about .about-dual-item:hover {
  border-color: var(--gold);
  background: var(--bg-panel-hover);
}

.page-about .about-dual-tag {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.82rem;
  color: var(--gold);
  border: 1px solid var(--gold-dark);
  padding: 0.18rem 0.55rem;
  letter-spacing: 0.06em;
}

.page-about .about-dual-item h3 {
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0 0 0.65rem;
  padding-right: 3.6rem;
}

.page-about .about-dual-item p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 0.9rem;
}

.page-about .about-dual-item ul {
  list-style: none;
  margin: 0;
  padding: 0.8rem 0 0;
  border-top: 1px solid var(--line);
}

.page-about .about-dual-item li {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--text-main);
}

.page-about .about-dual-item li + li {
  margin-top: 0.4rem;
}

.page-about .about-dual-item li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 0.42rem;
  height: 0.42rem;
  background: var(--gold-dark);
}

.page-about .about-platform-media {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--bg-panel);
}

.page-about .about-platform-media img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-platform-media figcaption {
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--text-muted);
  padding: 0.65rem 0.9rem;
  border-top: 1px solid var(--line);
}

.page-about .about-directory {
  border-left: 3px solid var(--gold-dark);
  padding-left: 1.15rem;
}

.page-about .about-dir-lead {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-muted);
  margin: 0.9rem 0 1.2rem;
}

.page-about .about-dir-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-dir-item {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 0.9rem;
  padding: 1.05rem 0.2rem;
  border-bottom: 1px solid var(--line);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.page-about .about-dir-item:hover {
  background: rgba(201, 164, 90, 0.04);
}

.page-about .about-dir-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--wine);
  color: var(--text-main);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8rem;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.page-about .about-dir-item:hover .about-dir-index {
  background: var(--gold);
  color: var(--bg-deep);
}

.page-about .about-dir-body h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0 0 0.35rem;
}

.page-about .about-dir-body p {
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--text-muted);
  margin: 0 0 0.4rem;
}

.page-about .about-dir-body a {
  position: relative;
  font-size: 0.85rem;
  color: var(--gold);
}

.page-about .about-dir-body a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.page-about .about-dir-body a:hover::after {
  transform: scaleX(1);
}

.page-about .about-compliance {
  background: var(--bg-panel);
  border-block: 1px solid var(--gold-dark);
  padding: 2.8rem 0;
}

.page-about .about-compliance-inner {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1.25rem;
  display: grid;
  gap: 1.8rem;
}

.page-about .about-icp-badge {
  border: 1px solid var(--gold);
  background: var(--bg-deep);
  padding: 1.7rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.page-about .about-icp-badge > span {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.page-about .about-icp-badge strong {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold);
  line-height: 1.2;
}

.page-about .about-icp-note {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.page-about .about-compliance-text .section-index {
  font-size: 0.85rem;
  color: var(--gold);
}

.page-about .about-compliance-title-row {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.9rem;
}

.page-about .about-compliance-title-row h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
}

.page-about .about-compliance-text > p {
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.page-about .about-compliance-list {
  list-style: none;
  margin: 0 0 1.2rem;
  padding: 0;
}

.page-about .about-compliance-list li {
  position: relative;
  padding-left: 1.2rem;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--text-main);
}

.page-about .about-compliance-list li + li {
  margin-top: 0.45rem;
}

.page-about .about-compliance-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 0.42rem;
  height: 0.42rem;
  background: var(--gold);
}

.page-about .about-compliance-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.page-about .about-rhythm {
  max-width: var(--max-width);
  margin-inline: auto;
  padding: 3rem 1.25rem;
}

.page-about .about-rhythm-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem;
}

.page-about .about-rhythm-head .section-index {
  font-size: 0.85rem;
  color: var(--gold);
}

.page-about .about-rhythm-head h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  margin: 0;
}

.page-about .about-rhythm-head p {
  width: 100%;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin: 0;
}

.page-about .about-rhythm-list {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: 1.6rem;
}

.page-about .about-rhythm-item {
  background: var(--bg-deep);
  padding: 1.5rem;
  transition: background-color var(--transition-fast);
}

.page-about .about-rhythm-item:hover {
  background: var(--bg-panel-hover);
}

.page-about .about-rhythm-item::before {
  content: "";
  display: block;
  width: 0.65rem;
  height: 0.65rem;
  background: var(--gold);
  margin-bottom: 0.8rem;
}

.page-about .about-rhythm-item h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gold);
  margin: 0 0 0.55rem;
}

.page-about .about-rhythm-item p {
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--text-muted);
  margin: 0;
}

.page-about .about-rhythm-item p a {
  color: var(--gold-light);
}

.page-about .about-rhythm-media {
  margin: 1.8rem 0 0;
  border: 1px solid var(--line);
  background: var(--bg-panel);
}

.page-about .about-rhythm-media img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-rhythm-media figcaption {
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--text-muted);
  padding: 0.65rem 0.9rem;
  border-top: 1px solid var(--line);
}

.page-about .about-cta {
  max-width: var(--max-width);
  margin-inline: auto;
  padding: 2.2rem 1.25rem 4rem;
  border-top: 1px solid var(--line);
}

.page-about .about-cta h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0 0 0.55rem;
}

.page-about .about-cta p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-muted);
  margin: 0 0 1.2rem;
}

.page-about .about-cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

@media (min-width: 900px) {
  .page-about .about-hero {
    display: grid;
    grid-template-columns: 110px 1fr 340px;
    gap: 2.4rem;
    align-items: center;
    padding: 3.4rem 1.25rem 4rem;
  }

  .page-about .about-rail {
    flex-direction: column;
    align-items: center;
    gap: 1.1rem;
    padding-top: 0.4rem;
  }

  .page-about .about-rail-cn {
    font-size: 5.4rem;
  }

  .page-about .about-rail-en {
    padding-top: 0;
  }

  .page-about .about-intro h1 {
    font-size: 3rem;
  }

  .page-about .about-lead {
    font-size: 1.06rem;
  }

  .page-about .about-desc {
    font-size: 0.94rem;
  }

  .page-about .about-scale-inner {
    padding-inline: 2.5rem;
  }

  .page-about .about-band-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-stat {
    padding: 2.2rem 1.6rem;
  }

  .page-about .about-stat .stat-number {
    font-size: 4.2rem;
  }

  .page-about .about-split {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3.5rem;
    align-items: start;
  }

  .page-about .about-compliance-inner {
    grid-template-columns: 0.75fr 1.25fr;
    align-items: center;
    gap: 3rem;
  }

  .page-about .about-icp-badge {
    padding: 2.2rem;
  }

  .page-about .about-icp-badge strong {
    font-size: 1.7rem;
  }

  .page-about .about-rhythm-inner {
    max-width: var(--max-width);
    margin-inline: auto;
  }

  .page-about .about-rhythm-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1200px) {
  .page-about .about-hero {
    grid-template-columns: 132px 1fr 400px;
  }

  .page-about .about-rail-cn {
    font-size: 6.2rem;
  }

  .page-about .about-stat .stat-number {
    font-size: 4.5rem;
  }
}