.features {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  padding: 6rem 0;
  position: relative;
}

.features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,102,204,0.1), transparent);
}

/* Main section title */
.features .section__title {
  margin-bottom: 3rem;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-dark);
  text-align: center;
  position: relative;
}

.features .section__title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  margin: 1.5rem auto 0;
  border-radius: 2px;
}

/* Category Styling - 小红书风格 */
.features__category {
  margin-bottom: 5rem;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  border-radius: 24px;
  padding: 3rem 2rem;
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.06),
    0 4px 16px rgba(0, 0, 0, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.8);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.features__category:hover {
  transform: translateY(-4px);
  box-shadow: 
    0 16px 48px rgba(0, 0, 0, 0.08),
    0 8px 24px rgba(0, 0, 0, 0.06);
}

.features__category:last-child {
  margin-bottom: 0;
}

.features__category-title {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--primary);
  text-align: center;
  margin-bottom: 2.5rem;
  padding: 0 1rem;
  position: relative;
  letter-spacing: -0.02em;
}

.features__category-title::before {
  content: '';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-light), var(--primary));
  border-radius: 2px;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  justify-items: center;
  max-width: 700px;
  margin: 0 auto;
}

/* Unified layout for all categories - following Property Considerations style */
.features__category .features__grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  max-width: 700px;
}

/* Feature Cards - 小红书卡片风格 */
.feature-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  width: 100%;
  max-width: 320px;
  min-height: 200px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 
    0 4px 20px rgba(0, 0, 0, 0.05),
    0 2px 8px rgba(0, 0, 0, 0.03);
  position: relative;
  backdrop-filter: blur(8px);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 
    0 12px 40px rgba(0, 0, 0, 0.08),
    0 6px 20px rgba(0, 0, 0, 0.06);
  border-color: rgba(0, 102, 204, 0.2);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card__content {
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
  text-align: center;
  position: relative;
}

.feature-card__title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 1rem;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.feature-card__description {
  color: var(--text-light);
  line-height: 1.6;
  font-size: 0.95rem;
  opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .features__grid {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
    max-width: 100%;
  }
  
  .features__category .features__grid {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  .features {
    padding: 4rem 0;
  }
  
  .features .section__title {
    margin-bottom: 2.5rem;
    font-size: 2rem;
  }
  
  .features__category {
    margin-bottom: 3rem;
    padding: 2rem 1.5rem;
    border-radius: 20px;
  }
  
  .features__category-title {
    font-size: 1.5rem;
    margin-bottom: 2rem;
  }
  
  .features__grid {
    grid-template-columns: 1fr;
    gap: 1rem;
    max-width: 100%;
  }
  
  .features__category .features__grid {
    grid-template-columns: 1fr;
    max-width: 100%;
  }
  
  .feature-card {
    max-width: 100%;
    min-height: 180px;
    border-radius: 16px;
  }
  
  .feature-card__content {
    padding: 2rem 1.5rem;
  }
  
  .feature-card__title {
    font-size: 1.15rem;
  }
  
  .feature-card__description {
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .features {
    padding: 3rem 0;
  }
  
  .features__category {
    padding: 1.5rem 1rem;
    margin-bottom: 2.5rem;
  }
  
  .feature-card__content {
    padding: 1.5rem 1.25rem;
  }
}