.protocol-container {
    max-width: 1200px;
    margin: 50px auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    overflow: hidden;
    color: #000;
    font-family: 'Segoe UI', '思源黑体', system-ui, sans-serif;
  }
  
  .protocol-container .content {
    display: none;
    padding: 2.5rem;
    max-height:none;
    background: white;
    overflow: auto;
    line-height: 1.8;
    font-size: 16px;
    opacity: 0;
    transform: translateY(10px);
    animation: slideIn 0.4s ease-out forwards;
  }



.protocol-container .nav-bar {
    background: linear-gradient(135deg, #E35A6A, #ff6161);
    padding: 0 20px;
    position: relative;
    display: flex;
}

.protocol-container .nav-item2 {
width: 33%;
text-align: center;
padding: 1.2rem 2rem;
color: rgba(255,255,255,0.8);
font-weight: 500;
transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
position: relative;
cursor: pointer;
text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.protocol-container .nav-item2::after {
	content: '';
	position: absolute;
	bottom: 0;
	left: 50%;
	width: 0;
	height: 3px;
	background: #fff;
	transition: all 0.3s ease;
}

.protocol-container .nav-item2:hover {
	color: white;
	transform: translateY(-2px);
}

.protocol-container .nav-item2.active {
	color: white;
	font-weight: 600;
}

.protocol-container .nav-item2.active::after {
	width: 100%;
	left: 0;
}

.protocol-container .content {
	display: none;
	padding: 2.5rem;
	max-height: 1500px;
	background: white;
	overflow: auto;
	line-height: 1.8;
	font-size: 16px;
	opacity: 0;
	transform: translateY(10px);
	animation: slideIn 0.4s ease-out forwards;
}

.protocol-container .content.active {
	display: block; 
}

@keyframes slideIn {
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

.protocol-container .content h2 {
	color: #E35A6A;
	margin-bottom: 1.5rem;
	padding-bottom: 1rem;
	border-bottom: 2px solid #eee;
	font-weight: 600;
}




@media (max-width: 768px) {
	.protocol-container {
		margin: 10px;
		border-radius: 10px;
	}
	.nav-item2 {
		padding: 1rem;
		font-size: 14px;
	}
	.content {
		padding: 1.5rem;
	}
}