/* ===== Home：SaaS 落地页（Hero + Features + CTA） ===== */
/* 风格：Soft UI / Minimal，Trust blue + 白空间，200–300ms 过渡，焦点可见，支持 prefers-reduced-motion */

/* ===== Hero ===== */
.hero {
  padding: 140px 0 80px;
  text-align: center;
  background: var(--home-hero-bg);
}

.hero-inner {
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
  background: var(--primary-light);
  margin-bottom: 24px;
  letter-spacing: 0.5px;
}

.hero-title {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--home-text);
}

.hero-desc {
  font-size: 17px;
  color: var(--home-text-2);
  line-height: 1.8;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 28px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 40px;
}

.hero-tag {
  padding: 4px 14px;
  border-radius: 14px;
  font-size: 13px;
  color: var(--home-text-2);
  background: var(--home-border-light);
  border: 1px solid var(--home-border);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.hero-actions a,
.cta-actions a {
  cursor: pointer;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.hero-actions a:focus-visible,
.cta-actions a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.hero-cta-secondary {
  border-color: var(--home-border);
  color: var(--home-text-2);
}

.hero-cta-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-hover);
}

/* ===== Section 通用 ===== */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--home-bg-alt);
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
  color: var(--home-text);
}

.section-desc {
  font-size: 16px;
  color: var(--home-text-2);
  text-align: center;
  margin-bottom: 48px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== Products Grid（可点击卡片：cursor + hover + focus） ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.product-card {
  padding: 28px;
  border-radius: 14px;
  background: var(--home-card-bg);
  border: 1px solid var(--home-border);
  text-decoration: none;
  color: inherit;
  display: block;
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.product-card:hover {
  border-color: var(--primary);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.product-card:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.product-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 16px;
}

.product-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--home-text);
}

.product-card p {
  font-size: 14px;
  color: var(--home-text-2);
  line-height: 1.7;
  margin-bottom: 16px;
}

.product-link {
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ===== Reliability ===== */
.reliability-layout {
  display: flex;
  gap: 64px;
  align-items: flex-start;
}

.reliability-intro {
  flex: 1;
  position: sticky;
  top: 100px;
}

.reliability-title {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
  color: var(--home-text);
}

.reliability-desc {
  font-size: 15px;
  color: var(--home-text-2);
  line-height: 1.8;
  margin-bottom: 32px;
}

.reliability-highlights {
  display: flex;
  gap: 28px;
}

.reliability-highlight {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.highlight-number {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
}

.highlight-text {
  font-size: 13px;
  color: var(--home-text-3);
}

.reliability-grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.reliability-card {
  padding: 24px;
  border-radius: 14px;
  background: var(--home-card-bg);
  border: 1px solid var(--home-border);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.reliability-card:hover {
  border-color: var(--home-border-light);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.04);
  transform: translateY(-2px);
}

.reliability-card-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 14px;
}

.reliability-card h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--home-text);
}

.reliability-card p {
  font-size: 13px;
  color: var(--home-text-2);
  line-height: 1.6;
}

/* ===== Highlights Grid ===== */
.highlights-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.highlight-item {
  display: flex;
  gap: 14px;
  padding: 20px;
  border-radius: 12px;
  transition: background-color 0.2s ease;
}

.highlight-item:hover {
  background: var(--home-border-light);
}

.highlight-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.highlight-item h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--home-text);
}

.highlight-item p {
  font-size: 13px;
  color: var(--home-text-2);
  line-height: 1.5;
}

/* ===== Use Cases ===== */
.usecases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.usecase-card {
  text-align: center;
  padding: 36px 24px;
  border-radius: 14px;
  background: var(--home-card-bg);
  border: 1px solid var(--home-border);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.usecase-card:hover {
  border-color: var(--home-border-light);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
  transform: translateY(-2px);
}

.usecase-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--primary-light);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 16px;
}

.usecase-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--home-text);
}

.usecase-card p {
  font-size: 13px;
  color: var(--home-text-2);
  line-height: 1.6;
}

/* ===== Management ===== */
.management-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 960px;
  margin: 0 auto;
}

.management-card {
  padding: 32px;
  border-radius: 14px;
  background: var(--home-card-bg);
  border: 1px solid var(--home-border);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.management-card:hover {
  border-color: var(--home-border-light);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.04);
  transform: translateY(-2px);
}

.management-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 16px;
}

.management-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--home-text);
}

.management-card p {
  font-size: 14px;
  color: var(--home-text-2);
  line-height: 1.7;
}

/* ===== CTA Section（对比色 CTA + 次要按钮描边） ===== */
.section-cta {
  padding: 80px 0;
  background: var(--home-hero-bg);
}

.cta-inner {
  text-align: center;
}

.cta-inner h2 {
  font-size: 34px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--home-text);
}

.cta-inner p {
  font-size: 16px;
  color: var(--home-text-2);
  margin-bottom: 32px;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.btn-cta-outline {
  border: 1px solid var(--home-border);
  color: var(--home-text-2);
  background: var(--home-card-bg);
}

.btn-cta-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-hover);
}

/* ===== 减少动效（WCAG / 无障碍） ===== */
@media (prefers-reduced-motion: reduce) {
  .product-card,
  .reliability-card,
  .usecase-card,
  .management-card,
  .hero-actions a,
  .cta-actions a {
    transition: none;
  }

  .product-card:hover,
  .reliability-card:hover,
  .usecase-card:hover,
  .management-card:hover {
    transform: none;
  }
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .highlights-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .reliability-layout {
    flex-direction: column;
    gap: 48px;
  }

  .reliability-intro {
    position: static;
  }

  .management-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hero {
    padding: 120px 0 60px;
  }

  .hero-title {
    font-size: 32px;
  }

  .hero-desc br {
    display: none;
  }

  .section {
    padding: 56px 0;
  }

  .section-desc {
    margin-bottom: 36px;
  }

  .products-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .reliability-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .reliability-highlights {
    flex-wrap: wrap;
    gap: 16px;
  }

  .highlights-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .usecases-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .section-cta {
    padding: 56px 0;
  }

  .cta-inner h2 {
    font-size: 26px;
  }

  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .usecases-grid {
    grid-template-columns: 1fr;
  }
}