/* ========================================
   超灵智能 - 子页面专用样式
   pages.css
   ======================================== */

/* === Page Hero Banner === */
.page-hero {
  padding: 6rem 2rem 3rem;
  text-align: center;
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
}
.page-hero::before {
  content: "";
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--brand-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}
.page-hero .badge {
  display: inline-block;
  background: var(--color-teal-bg);
  color: var(--color-teal-text);
  font-size: 12px;
  padding: 5px 16px;
  border-radius: var(--border-radius-full);
  margin-bottom: 1rem;
  font-weight: 600;
  border: 1px solid rgba(37,99,235,0.15);
}
.page-hero h1 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1rem;
  letter-spacing: -0.3px;
}
.page-hero p {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 600px;
  margin: 0 auto;
}

/* === Page Section === */
.page-section {
  padding: 3rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}
.page-section .section-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--brand-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  display: inline-block;
  padding-bottom: 4px;
  border-bottom: 2px solid var(--brand-primary);
}
.page-section .section-title {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 0.75rem;
  letter-spacing: -0.3px;
}
.page-section .section-sub {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 2rem;
}

/* === Detail Card === */
.detail-card {
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-tertiary);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  margin-bottom: 1.5rem;
  transition: all var(--transition-base);
}
.detail-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-secondary);
}
.detail-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 10px;
}
.detail-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 1rem;
}
.detail-card ul {
  padding: 0;
  list-style: none;
}
.detail-card li {
  font-size: 13px;
  color: var(--color-text-secondary);
  padding: 6px 0;
  border-bottom: 0.5px solid var(--color-border-tertiary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.detail-card li:last-child {
  border-bottom: none;
}

/* === Feature Grid === */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 2rem;
}
.feature-item {
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-tertiary);
  border-radius: var(--border-radius-lg);
  padding: 1.5rem;
  transition: all var(--transition-base);
}
.feature-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-primary);
}
.feature-item .icon {
  font-size: 28px;
  margin-bottom: 12px;
}
.feature-item h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}
.feature-item p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* === Pricing Grid === */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 2rem;
}
.pricing-card {
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-tertiary);
  border-radius: var(--border-radius-lg);
  padding: 1.75rem;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}
.pricing-card.featured {
  border: 2px solid var(--brand-primary);
  box-shadow: var(--shadow-blue);
  position: relative;
}
.pricing-card.featured::before {
  content: "推荐";
  position: absolute;
  top: -1px;
  right: 20px;
  background: var(--brand-primary);
  color: #fff;
  font-size: 11px;
  padding: 3px 12px;
  border-radius: 0 0 var(--border-radius-md) var(--border-radius-md);
  font-weight: 500;
}
.pricing-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.pricing-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}
.pricing-card .pricing-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
}
.pricing-card .pricing-price {
  font-size: 28px;
  font-weight: 700;
  color: var(--brand-primary);
  margin-bottom: 4px;
}
.pricing-card .pricing-price span {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text-secondary);
}
.pricing-card .pricing-note {
  font-size: 12px;
  color: var(--color-text-tertiary);
  margin-bottom: 1.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--color-border-tertiary);
}
.pricing-card ul {
  list-style: none;
  padding: 0;
  flex: 1;
}
.pricing-card li {
  font-size: 13px;
  color: var(--color-text-secondary);
  padding: 5px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.pricing-card .pricing-btn {
  margin-top: 1.25rem;
  width: 100%;
  padding: 10px;
  border-radius: var(--border-radius-md);
  font-size: 14px;
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid var(--color-border-secondary);
  background: var(--color-background-primary);
  color: var(--color-text-primary);
}
.pricing-card .pricing-btn:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}
.pricing-card.featured .pricing-btn {
  background: var(--brand-primary);
  color: #fff;
  border: none;
}
.pricing-card.featured .pricing-btn:hover {
  background: var(--brand-primary-dark);
}

/* === FAQ === */
.faq-list {
  max-width: 700px;
}
.faq-item {
  border-bottom: 1px solid var(--color-border-tertiary);
  padding: 1.25rem 0;
}
.faq-item:last-child { border-bottom: none; }
.faq-q {
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  transition: color var(--transition-fast);
}
.faq-q:hover { color: var(--brand-primary); }
.faq-q .faq-toggle {
  font-size: 18px;
  color: var(--color-text-tertiary);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}
.faq-item.open .faq-toggle { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base), padding var(--transition-base);
}
.faq-item.open .faq-a {
  max-height: 300px;
  padding-top: 10px;
}
.faq-a p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* === Industry Detail === */
.industry-detail {
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-tertiary);
  border-radius: var(--border-radius-lg);
  padding: 1.75rem;
  margin-bottom: 1rem;
  transition: all var(--transition-base);
}
.industry-detail:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-secondary);
}
.industry-detail-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 1rem;
}
.industry-detail-header .icon {
  font-size: 32px;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-teal-bg);
  border-radius: var(--border-radius-md);
  flex-shrink: 0;
}
.industry-detail-header h3 {
  font-size: 18px;
  font-weight: 600;
}
.industry-detail-header p {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: 2px;
}
.industry-detail-body {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}
.industry-detail-col h4 {
  font-size: 12px;
  font-weight: 600;
  color: var(--brand-primary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.industry-detail-col li {
  font-size: 13px;
  color: var(--color-text-secondary);
  padding: 4px 0;
  display: flex;
  align-items: flex-start;
  gap: 6px;
}
.industry-cta {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border-tertiary);
}
.industry-cta a {
  font-size: 13px;
  color: var(--brand-primary);
  font-weight: 500;
  cursor: pointer;
  transition: color var(--transition-fast);
}
.industry-cta a:hover { color: var(--brand-primary-dark); }

/* === Case Detail === */
.case-detail {
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-tertiary);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  margin-bottom: 1.5rem;
  transition: all var(--transition-base);
}
.case-detail:hover {
  box-shadow: var(--shadow-md);
}
.case-detail-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 1.25rem;
}
.case-detail-header .case-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.case-detail-header h3 {
  font-size: 18px;
  font-weight: 600;
}
.case-detail-header .case-industry {
  font-size: 12px;
  color: var(--color-text-tertiary);
}
.case-detail-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 1.25rem;
}
.case-detail-body h4 {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text-primary);
}
.case-detail-body p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* === Timeline === */
.timeline {
  position: relative;
  padding-left: 32px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border-secondary);
}
.timeline-item {
  position: relative;
  margin-bottom: 2rem;
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -32px;
  top: 4px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}
.timeline-dot::after {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #fff;
}
.timeline-item h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 2px;
}
.timeline-item .timeline-date {
  font-size: 12px;
  color: var(--brand-primary);
  font-weight: 500;
  margin-bottom: 6px;
}
.timeline-item p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* === Filter Tags === */
.filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 2rem;
}
.filter-tag {
  font-size: 13px;
  padding: 6px 16px;
  border-radius: var(--border-radius-full);
  border: 1px solid var(--color-border-secondary);
  background: var(--color-background-primary);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.filter-tag:hover, .filter-tag.active {
  background: var(--brand-primary);
  color: #fff;
  border-color: var(--brand-primary);
}

/* === Footer Grid === */
.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border-tertiary);
}
.footer-links h4 {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-text-primary);
}
.footer-links a {
  display: block;
  font-size: 13px;
  color: var(--color-text-secondary);
  padding: 4px 0;
  transition: color var(--transition-fast);
}
.footer-links a:hover { color: var(--brand-primary); }
.footer-bottom {
  padding-top: 1.5rem;
  text-align: center;
}
.footer-bottom p {
  font-size: 12px;
  color: var(--color-text-tertiary);
}
.footer { padding: 2.5rem 0 1.5rem; }

/* === Page CTA spacing === */
.page-cta {
  padding: 0 2rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

/* === Responsive === */
@media (max-width: 768px) {
  .page-hero { padding: 4rem 1rem 2rem; }
  .page-hero h1 { font-size: 26px; }
  .page-section { padding: 2rem 1rem; }
  .feature-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .industry-detail-body { grid-template-columns: 1fr; }
  .case-detail-body { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
  .page-cta { padding: 0 1rem 1.5rem; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* === Value Props (开源节流) === */
.value-props-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.value-card-blue,
.value-card-green {
  border-radius: var(--border-radius-xl);
  padding: 2rem;
  position: relative;
  overflow: hidden;
}
.value-card-blue {
  background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
  border: 1px solid rgba(37,99,235,0.15);
}
.value-card-green {
  background: linear-gradient(135deg, #F0FDF4 0%, #DCFCE7 100%);
  border: 1px solid rgba(22,163,74,0.15);
}
.value-card-blue h3 { color: var(--brand-primary-dark); }
.value-card-green h3 { color: #15803D; }
.value-card-blue .value-tag {
  background: rgba(37,99,235,0.1);
  color: var(--brand-primary);
}
.value-card-green .value-tag {
  background: rgba(22,163,74,0.1);
  color: #15803D;
}
.value-tag {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: var(--border-radius-full);
  font-weight: 500;
  display: inline-block;
}
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.testimonial-card {
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-tertiary);
  border-radius: var(--border-radius-lg);
  padding: 1.5rem;
  transition: all var(--transition-base);
}
.testimonial-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

@media (prefers-color-scheme: dark) {
  .value-card-blue {
    background: linear-gradient(135deg, rgba(37,99,235,0.15) 0%, rgba(37,99,235,0.08) 100%);
    border-color: rgba(59,130,246,0.25);
  }
  .value-card-blue h3 { color: #93C5FD; }
  .value-card-blue .value-tag {
    background: rgba(37,99,235,0.2);
    color: #93C5FD;
  }
  .value-card-green {
    background: linear-gradient(135deg, rgba(22,163,74,0.15) 0%, rgba(22,163,74,0.08) 100%);
    border-color: rgba(34,197,94,0.25);
  }
  .value-card-green h3 { color: #4ADE80; }
  .value-card-green .value-tag {
    background: rgba(22,163,74,0.2);
    color: #4ADE80;
  }
}

@media (max-width: 768px) {
  .value-props-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
}