.page-home {
  --home-hero-bg: linear-gradient(135deg, var(--primary) 0%, #0d2f4f 60%, #143a5e 100%);
  --home-card-radius: 12px;
  --home-card-shadow: 0 8px 32px rgba(10, 37, 64, 0.25);
  --home-section-gap: 5rem;
  --home-text-light: rgba(255, 255, 255, 0.85);
  --home-text-muted: rgba(255, 255, 255, 0.6);
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--bg);
  color: var(--text-primary);
  font: var(--font-body);
}

/* ────────────── 首屏 ────────────── */
.page-home .home-hero {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding: 3rem 1.5rem 4rem;
  background: var(--home-hero-bg);
  color: #fff;
  overflow: hidden;
}

.page-home .hero-breadcrumb {
  font: var(--font-small);
  color: var(--home-text-muted);
  margin-bottom: 0.5rem;
}

.page-home .hero-title {
  font: var(--font-heading);
  font-weight: 800;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.1;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
  color: #fff;
}

.page-home .hero-desc {
  font: var(--font-body);
  font-size: 1.05rem;
  color: var(--home-text-light);
  max-width: 32rem;
  margin: 0 0 1.5rem;
  line-height: 1.6;
}

.page-home .hero-cards {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: relative;
  z-index: 2;
}

.page-home .hero-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.5rem 1.75rem;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-radius: var(--home-card-radius);
  border: 1px solid rgba(255, 255, 255, 0.15);
  text-decoration: none;
  color: #fff;
  transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94), background 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}

.page-home .hero-card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, transparent 40%, rgba(255, 255, 255, 0.08) 100%);
  border-radius: 0 0 0 80px;
  pointer-events: none;
}

.page-home .hero-card:hover,
.page-home .hero-card:focus-visible {
  transform: translateY(-6px) scale(1.02);
  background: rgba(255, 255, 255, 0.2);
  box-shadow: var(--home-card-shadow);
}

.page-home .hero-card--primary {
  border-left: 4px solid var(--secondary);
}

.page-home .hero-card--gold {
  border-left: 4px solid var(--secondary);
}

.page-home .hero-card--accent {
  border-left: 4px solid var(--accent);
}

.page-home .card-icon {
  font-size: 1.6rem;
  line-height: 1;
  margin-bottom: 0.15rem;
}

.page-home .card-label {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
}

.page-home .card-brief {
  font: var(--font-small);
  color: var(--home-text-muted);
  font-size: 0.85rem;
}

.page-home .hero-bg-image {
  position: absolute;
  right: -5%;
  bottom: -8%;
  width: 55%;
  max-width: 460px;
  opacity: 0.2;
  z-index: 0;
  pointer-events: none;
}

.page-home .hero-bg-img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.page-home .hero-mobile-icon {
  display: none;
}

/* ────────────── 帮助文档预览（窄段） ────────────── */
.page-home .home-doc-preview {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding: 4rem 1.5rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.page-home .doc-preview-text {
  order: 1;
}

.page-home .section-label {
  font: var(--font-heading);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--primary);
  margin: 0 0 1rem;
  letter-spacing: -0.01em;
}

.page-home .doc-preview-desc {
  font: var(--font-body);
  color: var(--text-secondary);
  max-width: 36rem;
  line-height: 1.7;
  margin: 0 0 1.25rem;
}

.page-home .doc-preview-link {
  display: inline-block;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  padding: 0.4rem 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.25s ease, color 0.25s ease;
}

.page-home .doc-preview-link:hover,
.page-home .doc-preview-link:focus-visible {
  border-bottom-color: var(--accent);
  color: #e55a2b;
}

.page-home .doc-preview-visual {
  order: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-home .doc-preview-img {
  width: 160px;
  height: 160px;
  object-fit: contain;
  border-radius: 16px;
  background: var(--bg);
  padding: 1rem;
  box-shadow: 0 4px 20px rgba(10, 37, 64, 0.08);
}

/* ────────────── 版本文档区（宽段） ────────────── */
.page-home .home-version-compare {
  padding: 4rem 1.5rem 5rem;
  background: var(--bg);
  position: relative;
}

.page-home .compare-intro {
  font: var(--font-body);
  color: var(--text-secondary);
  margin: -0.5rem 0 2rem;
  max-width: 30rem;
}

.page-home .compare-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
  flex-wrap: wrap;
}

.page-home .compare-tab {
  padding: 0.6rem 1.6rem;
  font: var(--font-small);
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  border-radius: 40px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.page-home .compare-tab:hover,
.page-home .compare-tab:focus-visible {
  border-color: var(--primary);
  color: var(--primary);
}

.page-home .compare-tab--active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.page-home .compare-tab--active:hover {
  background: #0d2f4f;
  border-color: #0d2f4f;
  color: #fff;
}

.page-home .compare-panels {
  position: relative;
  min-height: 140px;
}

.page-home .compare-panel {
  display: none;
  background: var(--surface);
  border-radius: 16px;
  padding: 1.75rem 2rem;
  box-shadow: 0 4px 24px rgba(10, 37, 64, 0.06);
  border: 1px solid var(--border);
}

.page-home .compare-panel--active {
  display: block;
  animation: fadeSlideIn 0.35s ease;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-home .compare-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.page-home .compare-list li {
  position: relative;
  padding-left: 1.6rem;
  font: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.5;
}

.page-home .compare-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--secondary);
  font-weight: 600;
}

.page-home .compare-image {
  margin-top: 2.5rem;
  display: flex;
  justify-content: center;
}

.page-home .compare-img {
  width: 100%;
  max-width: 500px;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 6px 28px rgba(10, 37, 64, 0.1);
  background: var(--surface);
  object-fit: contain;
}

/* ────────────── 底部入口 ────────────── */
.page-home .home-bottom-entry {
  padding: 2.5rem 1.5rem 3.5rem;
  background: var(--primary);
  color: #fff;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.page-home .bottom-note {
  font: var(--font-small);
  color: var(--home-text-light);
  max-width: 36rem;
  margin: 0;
  line-height: 1.7;
}

.page-home .bottom-cta {
  display: inline-block;
  padding: 0.75rem 2.4rem;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
  border-radius: 40px;
  text-decoration: none;
  transition: background 0.3s ease, transform 0.3s ease;
  box-shadow: 0 4px 16px rgba(255, 107, 53, 0.35);
}

.page-home .bottom-cta:hover,
.page-home .bottom-cta:focus-visible {
  background: #e55a2b;
  transform: translateY(-2px);
}

/* ────────────── 桌面端布局 ────────────── */
@media (min-width: 768px) {
  .page-home .home-hero {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    padding: 4rem 3rem 5rem;
    align-items: center;
  }

  .page-home .hero-text {
    grid-column: 1 / 2;
  }

  .page-home .hero-cards {
    grid-column: 2 / 3;
    flex-direction: column;
    gap: 1.1rem;
    max-width: 400px;
    justify-self: end;
  }

  .page-home .hero-bg-image {
    width: 40%;
    max-width: 380px;
    opacity: 0.15;
    right: -2%;
    bottom: -10%;
  }

  .page-home .hero-mobile-icon {
    display: block;
    position: absolute;
    left: 5%;
    bottom: 6%;
    width: 60px;
    opacity: 0.25;
    pointer-events: none;
  }

  .page-home .hero-mobile-img {
    width: 100%;
    height: auto;
    object-fit: contain;
  }

  .page-home .home-doc-preview {
    grid-template-columns: 1fr auto;
    gap: 3rem;
    padding: 5rem 3rem;
    align-items: center;
  }

  .page-home .doc-preview-text {
    order: 0;
  }

  .page-home .doc-preview-visual {
    order: 1;
  }

  .page-home .doc-preview-img {
    width: 200px;
    height: 200px;
  }

  .page-home .home-version-compare {
    padding: 5rem 3rem 6rem;
  }

  .page-home .compare-tabs {
    gap: 0.75rem;
  }

  .page-home .compare-panel {
    padding: 2rem 2.5rem;
  }

  .page-home .home-bottom-entry {
    padding: 3rem 3rem 4rem;
    flex-direction: row;
    justify-content: center;
    gap: 2.5rem;
    text-align: left;
  }

  .page-home .bottom-note {
    text-align: left;
  }

  .page-home .bottom-cta {
    flex-shrink: 0;
  }
}

@media (min-width: 1024px) {
  .page-home .home-hero {
    padding: 5rem 4rem 6rem;
    gap: 4rem;
  }

  .page-home .hero-cards {
    max-width: 440px;
  }

  .page-home .home-doc-preview {
    padding: 6rem 4rem;
  }

  .page-home .home-version-compare {
    padding: 6rem 4rem 7rem;
  }

  .page-home .home-bottom-entry {
    padding: 3.5rem 4rem 4.5rem;
  }
}

/* ────────────── 大屏极端宽度 ────────────── */
@media (min-width: 1280px) {
  .page-home .home-hero {
    max-width: 1280px;
    margin: 0 auto;
    border-radius: 0 0 24px 24px;
  }

  .page-home .home-doc-preview,
  .page-home .home-version-compare,
  .page-home .home-bottom-entry {
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
  }
}