.product-hero {
  background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('https://via.placeholder.com/1920x600/0d1b2a/ffffff?text=智慧护理大屏') center/cover;
  color: white;
  text-align: center;
  padding: 120px 20px 80px;
}

.product-hero h1 {
  font-size: 3.8rem;
  margin-bottom: 1rem;
}

.product-hero p {
  font-size: 1.4rem;
  max-width: 900px;
  margin: 0 auto 2rem;
  opacity: 0.9;
}

.cta-button {
  display: inline-block;
  background: #0d7cba;
  color: white;
  padding: 15px 40px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.2rem;
  box-shadow: 0 10px 20px rgba(13,124,186,0.3);
  transition: all 0.3s ease;
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 30px rgba(13,124,186,0.4);
}

.product-container {
  max-width: 1200px;
  margin: 6rem auto;
  padding: 0 20px;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  color: #0d1b2a;
  margin-bottom: 3rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
  margin: 4rem 0;
}

.feature-card {
  background: white;
  padding: 2.5rem;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  text-align: center;
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-10px);
}

.feature-icon {
  width: 80px;
  height: 80px;
  background: #e3f2fd;
  color: #0d7cba;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  border-radius: 50%;
  margin: 0 auto 1.5rem;
}

.feature-card h3 {
  font-size: 1.5rem;
  color: #0d1b2a;
  margin-bottom: 1rem;
}

.dashboard-preview {
  background: #0d1b2a;
  padding: 2rem;
  border-radius: 15px;
  margin: 4rem 0;
  text-align: center;
}

.dashboard-preview img {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.use-cases {
  margin: 5rem 0;
}

.case-item {
  display: flex;
  gap: 2rem;
  margin-bottom: 3rem;
  align-items: flex-start;
}

.case-icon {
  width: 60px;
  height: 60px;
  background: #0d7cba;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.case-content h3 {
  color: #0d1b2a;
  margin-bottom: 0.5rem;
}

.case-content p {
  color: #555;
  line-height: 1.7;
}

.tech-specs {
  background: #f8f9fa;
  padding: 3rem;
  border-radius: 15px;
  margin: 4rem 0;
}

.tech-specs ul {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
}

.tech-specs li {
  padding: 0.8rem 0;
  border-bottom: 1px solid #eee;
  color: #333;
  display: flex;
  justify-content: space-between;
}

.tech-specs li:last-child {
  border-bottom: none;
}

.tech-label {
  font-weight: 600;
  color: #0d1b2a;
  min-width: 120px;
}

/* 侧边申请试用栏 */
.sidebar-cta {
  position: fixed;
  right: 30px;
  top: 120px;
  width: 300px;
  background: white;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
  z-index: 100;
}

.sidebar-cta h3 {
  margin-bottom: 1rem;
  color: #0d1b2a;
}

.sidebar-cta form input, .sidebar-cta form button {
  width: 100%;
  padding: 12px;
  margin-bottom: 1rem;
  border: 1px solid #ddd;
  border-radius: 8px;
  box-sizing: border-box;
}

.sidebar-cta form button {
  background: #0d7cba;
  color: white;
  border: none;
  cursor: pointer;
  font-weight: 600;
}

.sidebar-cta form button:hover {
  background: #0c6ca1;
}

@media (max-width: 992px) {
  .sidebar-cta {
    position: static;
    width: auto;
    margin: 0 20px;
  }
}