.page-home {
  --home-content-width: 1200px;
  --home-pad-mobile: 1.25rem;
  --home-pad-tablet: 2rem;
  --home-pad-desktop: 3rem;
  --home-gold-line: rgba(245, 183, 49, 0.4);
  --home-hero-overlay: linear-gradient(190deg, rgba(11, 29, 58, 0.5) 0%, rgba(11, 29, 58, 0.86) 68%, rgba(17, 34, 64, 1) 100%);
  position: relative;
  background: var(--color-bg);
  color: var(--color-text);
  overflow-x: hidden;
}

/* 面包屑 */
.page-home .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.875rem var(--home-pad-mobile);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-line);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}
.page-home .breadcrumb-current {
  color: var(--color-text);
  font-weight: 600;
}
.page-home .breadcrumb-sep {
  color: var(--color-gold);
}
.page-home .breadcrumb-link {
  color: var(--color-action);
  text-decoration: none;
  transition: color var(--transition-fast) ease;
}
.page-home .breadcrumb-link:hover {
  color: var(--color-gold);
}

/* 堆叠面板共同节奏 */
.page-home .stack-panel {
  position: relative;
  overflow: hidden;
  scroll-margin-top: 72px;
}
.page-home .stack-panel + .stack-panel {
  border-top: 1px solid var(--home-gold-line);
}
.page-home .panel-header {
  margin-bottom: 1.5rem;
}
.page-home .panel-kicker {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold);
}
.page-home .panel-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 2rem;
  line-height: 1.3;
  color: var(--color-text);
  margin-top: 0.5rem;
}
.page-home .panel-desc {
  margin-top: 0.625rem;
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  max-width: 46em;
}

/* ===== 章节预览面板 ===== */
.page-home .preview-panel {
  min-height: 85vh;
  display: flex;
  align-items: stretch;
  justify-content: center;
  background: var(--color-bg);
}
.page-home .preview-hero {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-home .preview-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.38;
}
.page-home .preview-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--home-hero-overlay);
}
.page-home .preview-content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--home-content-width);
  margin: 0 auto;
  padding: 3rem var(--home-pad-mobile);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.page-home .preview-title {
  font-size: 2.5rem;
  letter-spacing: 0.02em;
}
.page-home .preview-lead {
  margin-top: 0.75rem;
  color: var(--color-text-secondary);
  font-size: 1.0625rem;
  line-height: 1.7;
  max-width: 38em;
}
.page-home .preview-nav-grid {
  display: grid;
  gap: 0.875rem;
  margin-top: 1.5rem;
}
.page-home .preview-card {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1.125rem;
  background: rgba(17, 34, 64, 0.88);
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-gold);
  text-decoration: none;
  color: var(--color-text);
  transition: transform var(--transition-fast) ease, border-color var(--transition-fast) ease, background-color var(--transition-fast) ease;
}
.page-home .preview-card:hover,
.page-home .preview-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--color-gold);
  background: rgba(17, 34, 64, 1);
}
.page-home .preview-card-index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-gold);
  letter-spacing: 0.08em;
}
.page-home .preview-card-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.0625rem;
}
.page-home .preview-card-desc {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  line-height: 1.5;
}
.page-home .preview-meta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(44, 62, 80, 0.7);
}
.page-home .preview-meta-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  border-bottom: 1px solid transparent;
  transition: color var(--transition-fast) ease, border-color var(--transition-fast) ease;
}
.page-home .preview-meta-links a:hover {
  color: var(--color-gold);
  border-color: var(--color-gold);
}

/* ===== 核心数据面板 ===== */
.page-home .data-panel {
  background: var(--color-card-deep);
}
.page-home .data-backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-home .data-backdrop img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.22;
}
.page-home .data-backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(13, 32, 64, 0.94) 0%, rgba(13, 32, 64, 0.78) 60%, rgba(13, 32, 64, 0.5) 100%);
}
.page-home .data-panel-inner {
  position: relative;
  z-index: 1;
  max-width: var(--home-content-width);
  margin: 0 auto;
  padding: 3rem var(--home-pad-mobile);
}
.page-home .data-card-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.25rem;
}
.page-home .data-card {
  background: var(--color-card);
  border: 1px solid var(--color-line);
  border-top: 2px solid var(--color-gold);
  padding: 1.25rem;
  transition: transform var(--transition-fast) ease, box-shadow var(--transition-fast) ease;
}
.page-home .data-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.32);
}
.page-home .data-metric {
  display: block;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-gold-light);
}
.page-home .data-label {
  display: block;
  margin-top: 0.375rem;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text);
}
.page-home .data-note {
  margin-top: 0.5rem;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  line-height: 1.5;
}
.page-home .data-extra {
  display: block;
  margin-top: 0.625rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--color-line);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-gold);
  opacity: 0.78;
  transition: opacity var(--transition-fast) ease;
}
.page-home .data-card:hover .data-extra {
  opacity: 1;
}
.page-home .data-footnote {
  margin-top: 1.25rem;
  padding-top: 0.875rem;
  border-top: 1px solid var(--color-line);
  color: var(--color-text-secondary);
  font-size: 0.8125rem;
  line-height: 1.7;
  max-width: 48em;
}

/* ===== 功能亮点面板 ===== */
.page-home .features-panel {
  padding: 3rem var(--home-pad-mobile);
  background: var(--color-bg);
}
.page-home .features-layout {
  display: grid;
  gap: 2rem;
}
.page-home .features-media {
  order: -1;
  border: 1px solid var(--color-line);
  background: var(--color-card);
  overflow: hidden;
}
.page-home .features-media img {
  width: 100%;
  height: auto;
  display: block;
}
.page-home .features-list {
  display: grid;
  gap: 1.5rem;
}
.page-home .feature-item {
  border-bottom: 1px solid var(--color-line);
  padding-bottom: 1.25rem;
}
.page-home .feature-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.page-home .feature-item h3 {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
}
.page-home .feature-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-gold);
  border: 1px solid var(--color-gold);
  padding: 0.125rem 0.375rem;
  flex-shrink: 0;
}
.page-home .feature-item p {
  margin-top: 0.5rem;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.65;
}

/* ===== 登录与联系面板 ===== */
.page-home .access-panel {
  padding: 3rem var(--home-pad-mobile);
  background: var(--color-card);
}
.page-home .access-grid {
  display: grid;
  gap: 2rem;
  max-width: var(--home-content-width);
  margin: 0 auto;
}
.page-home .access-media {
  background: var(--color-bg);
  border: 1px solid var(--color-line);
}
.page-home .access-media img {
  width: 100%;
  height: auto;
  display: block;
}
.page-home .access-content {
  display: flex;
  flex-direction: column;
}
.page-home .access-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-top: 1.25rem;
}
.page-home .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background-color var(--transition-fast) ease, color var(--transition-fast) ease, border-color var(--transition-fast) ease;
}
.page-home .btn-action {
  background: var(--color-action);
  border-color: var(--color-action);
  color: var(--color-bg);
}
.page-home .btn-action:hover {
  background: transparent;
  color: var(--color-action);
}
.page-home .btn-secondary {
  background: transparent;
  border-color: var(--color-line);
  color: var(--color-text);
}
.page-home .btn-secondary:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}
.page-home .access-contact {
  list-style: none;
  margin-top: 1.25rem;
  padding: 0;
  display: grid;
  gap: 0.625rem;
}
.page-home .contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-line);
}
.page-home .contact-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-gold);
  letter-spacing: 0.08em;
}
.page-home .contact-value {
  font-size: 0.9375rem;
  color: var(--color-text);
  word-break: break-all;
}
.page-home .access-extras {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.25rem;
}
.page-home .access-extras a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  border-bottom: 1px solid var(--color-line);
  transition: color var(--transition-fast) ease, border-color var(--transition-fast) ease;
}
.page-home .access-extras a:hover {
  color: var(--color-gold);
  border-color: var(--color-gold);
}

/* ===== 平板与桌面 ===== */
@media (min-width: 768px) {
  .page-home .breadcrumbs {
    padding: 1rem var(--home-pad-tablet);
  }
  .page-home .panel-title {
    font-size: 2.5rem;
  }
  .page-home .preview-content {
    padding: 4rem var(--home-pad-tablet);
  }
  .page-home .preview-title {
    font-size: 3rem;
  }
  .page-home .preview-nav-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }
  .page-home .preview-meta-links {
    gap: 1.25rem;
  }
  .page-home .data-panel-inner {
    padding: 4rem var(--home-pad-tablet);
  }
  .page-home .data-card-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }
  .page-home .data-card {
    padding: 1.5rem;
  }
  .page-home .data-metric {
    font-size: 2.375rem;
  }
  .page-home .features-panel {
    padding: 4rem var(--home-pad-tablet);
  }
  .page-home .access-panel {
    padding: 4rem var(--home-pad-tablet);
  }
  .page-home .features-layout {
    grid-template-columns: 1.15fr 1fr;
    gap: 2.5rem;
    align-items: center;
  }
  .page-home .features-media {
    order: 0;
  }
  .page-home .access-grid {
    grid-template-columns: 0.8fr 1.2fr;
    gap: 2.5rem;
    align-items: center;
  }
}

@media (min-width: 1200px) {
  .page-home .breadcrumbs {
    padding: 1rem var(--home-pad-desktop);
  }
  .page-home .preview-content {
    padding: 5rem var(--home-pad-desktop);
  }
  .page-home .preview-title {
    font-size: 3.5rem;
  }
  .page-home .data-panel-inner {
    padding: 5rem var(--home-pad-desktop);
  }
  .page-home .data-card-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-home .features-panel {
    padding: 5rem var(--home-pad-desktop);
  }
  .page-home .access-panel {
    padding: 5rem var(--home-pad-desktop);
  }
}