/* ===== page-ai-services.css — AI 智能服务页 ===== */

/* ===== AI Services Grid ===== */
.ai-services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}
.ai-service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
}
.ai-service-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-xl);
}
.ai-service-card__header {
  padding: var(--space-3xl) var(--space-2xl);
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.ai-service-card__header::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 120%, rgba(255,255,255,0.12) 0%, transparent 60%);
  pointer-events: none;
}
.ai-service-card__header > * { position: relative; z-index: 1; }
.ai-service-card__icon { font-size: 2.8rem; margin-bottom: var(--space-lg); }
.ai-service-card__name { font-size: var(--text-2xl); font-weight: 700; margin-bottom: var(--space-sm); }
.ai-service-card__subtitle { font-size: var(--text-sm); color: rgba(255,255,255,0.95); text-shadow: 0 1px 4px rgba(0,0,0,0.2); }
.ai-service-card__body { padding: var(--space-2xl); }
.ai-service-card__desc { color: var(--text-secondary); line-height: 1.9; margin-bottom: var(--space-lg); }
.ai-service-card__features { list-style: none; padding: 0; }
.ai-service-card__features li {
  padding: var(--space-sm) 0;
  color: var(--text-secondary);
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.ai-check { color: var(--color-primary); font-weight: 700; }

/* ===== Tech Stack Grid ===== */
.ai-tech-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
  margin-top: var(--space-3xl);
}
.ai-tech-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}
.ai-tech-item:hover {
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.ai-tech-item__name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
}
.ai-tech-item__cat {
  font-size: var(--text-xs);
  color: var(--color-primary-light);
  padding: 2px 8px;
  background: rgba(108,92,231,0.08);
  border-radius: var(--radius-full);
}

/* ===== Steps Grid ===== */
.ai-steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-3xl);
}
.ai-step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl) var(--space-xl);
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}
.ai-step-card::before {
  content: '';
  position: absolute; inset: 0; border-radius: inherit;
  background: var(--gradient-card-border);
  opacity: 0;
  transition: opacity var(--transition-base);
}
.ai-step-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-lg);
}
.ai-step-card:hover::before { opacity: 1; }
.ai-step-card > * { position: relative; z-index: 1; }
.ai-step-card__num {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-md);
}
.ai-step-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}
.ai-step-card__desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== Industry Grid ===== */
.ai-industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}
.ai-industry-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}
.ai-industry-card::before {
  content: '';
  position: absolute; inset: 0; border-radius: inherit;
  background: var(--gradient-card-border);
  opacity: 0;
  transition: opacity var(--transition-base);
}
.ai-industry-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-xl);
}
.ai-industry-card:hover::before { opacity: 1; }
.ai-industry-card > * { position: relative; z-index: 1; }
.ai-industry-card__icon { font-size: 2.5rem; margin-bottom: var(--space-lg); }
.ai-industry-card__name { font-size: var(--text-lg); font-weight: 700; color: var(--text-primary); margin-bottom: var(--space-sm); }
.ai-industry-card__desc { font-size: var(--text-sm); color: var(--text-secondary); line-height: 1.7; }

/* ===== Advantages Grid ===== */
.ai-advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}
.ai-adv-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}
.ai-adv-card::before {
  content: '';
  position: absolute; inset: 0; border-radius: inherit;
  background: var(--gradient-card-border);
  opacity: 0;
  transition: opacity var(--transition-base);
}
.ai-adv-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-xl);
}
.ai-adv-card:hover::before { opacity: 1; }
.ai-adv-card > * { position: relative; z-index: 1; }
.ai-adv-card__icon { font-size: 2.5rem; margin-bottom: var(--space-lg); }
.ai-adv-card__title { font-size: var(--text-lg); font-weight: 700; color: var(--text-primary); margin-bottom: var(--space-sm); }
.ai-adv-card__desc { font-size: var(--text-sm); color: var(--text-secondary); line-height: 1.8; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .ai-services-grid { grid-template-columns: 1fr; }
  .ai-service-card__header { padding: var(--space-2xl) var(--space-xl); }
  .ai-service-card__icon { font-size: 2.2rem; }
  .ai-service-card__name { font-size: var(--text-xl); }
  .ai-service-card__body { padding: var(--space-xl); }
  .ai-steps-grid { grid-template-columns: 1fr 1fr; }
  .ai-industry-grid { grid-template-columns: 1fr 1fr; }
  .ai-advantages-grid { grid-template-columns: 1fr; }
  .ai-adv-card { padding: var(--space-xl); }
}
@media (max-width: 480px) {
  .ai-steps-grid { grid-template-columns: 1fr; }
  .ai-industry-grid { grid-template-columns: 1fr; }
  .ai-tech-item { padding: 8px 14px; }
}