/* 全屏大图 */
.page-banner {
    width: 100%;
    height: 420px;
    margin-top: 90px;
}
.page-banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* 标题区域 */
.detail-header {
    padding: 50px 0 30px;
    text-align: center;
    /* border-bottom: 1px solid #eee; */
    margin-bottom: 20px;
}
.detail-header h1 {
    font-size: 36px;
    color: #111;
    margin-bottom: 15px;
    font-weight: 700;
}
.detail-meta {
    font-size: 15px;
    color: #888;
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
}
.detail-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* 下载按钮 */
.download-box {
    text-align: center;
    margin-bottom: 40px;
}
.download-btn {
    display: inline-block;
    padding: 12px 30px;
    background: #0d47a1;
    color: #fff;
    text-decoration: none;
    border-radius: 6px;
    font-size: 16px;
    transition: 0.3s;
    cursor: pointer;
    border: none;
}
.download-btn:hover {
    background: #0a3a7a;
}
/* 移动端下载提示 */
.mobile-tip {
    display: none;
    color: #666;
    font-size: 14px;
    margin-top: 10px;
}

/* PDF 预览容器 */
.pdf-container {
    width: 100%;
    height: 900px;
    margin-bottom: 60px;
    border: 1px solid #eee;
    border-radius: 8px;
    overflow: hidden;
    background: #fff;
}
.pdf-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* === 新增：返回 / 关闭按钮样式 === */
.action-box {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 80px;
    flex-wrap: wrap;
}
.action-btn {
    padding: 12px 36px;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: 0.3s;
    border: none;
}
.back-btn {
    background: #666;
    color: #fff;
}
.back-btn:hover {
    background: #555;
}
.close-btn {
    background: #d32f2f;
    color: #fff;
}
.close-btn:hover {
    background: #b71c1c;
}
@media (max-width:768px){
    .action-btn {
		padding: 14px 40px;
		font-size: 17px;
    }
}
		

/* 响应式 */
@media (max-width: 768px) {
    .nav-menu {
		position: fixed;
		top: 90px;
		left: -100%;
		width: 100%;
		height: calc(100vh - 90px);
		background: #fff;
		flex-direction: column;
		justify-content: center;
		transition: left 0.3s;
    }
    .nav-menu li { margin: 18px 0; }
    .nav-menu.active { left: 0; }
    .mobile-menu-btn { display: block; }
    .page-banner { height: 260px; }
    .detail-header h1 { font-size: 26px; }
    .detail-meta { gap:15px; flex-wrap:wrap; }
    .pdf-container { display: none; }
    .download-btn { padding: 15px 40px; font-size: 17px; }
    .mobile-tip { display: block; }
    .download-box { margin-bottom: 60px; } 
			/* 移动端适配 */
    .footer {
		padding: 50px 0 20px; /* 减少移动端内边距 */
    }
    .footer-wrap {
		flex-direction: column;
		text-align: center;
		gap: 30px; /* 移动端缩小间距 */
    }
    .footer-info {
		text-align: left; /* 移动端文字靠左 */
    }
    .copyright {
		margin-top: 20px;
		padding-top: 20px;
		font-size: 14px; /* 移动端版权文字缩小 */
    }
}

/* 微信浏览器特殊样式 */
.wechat-browser .pdf-container { display: none !important; }
.wechat-browser .download-box { margin-bottom: 60px; }
.wechat-browser .mobile-tip { 
    display: block; 
    color: #e63946;
    font-weight: 500;
}