/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
    padding-top: 100px;
}

/* 链接样式 */
a {
    text-decoration: none;
    color: #3a7bd5;
    transition: color 0.3s ease;
}

a:hover {
    color: #295d9a;
}

/* 列表样式 */
li {
    list-style: none;
}

/* 标题样式 */
h1, h2, h3, h4 {
    margin-bottom: 20px;
    color: #2c3e50;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
    border-bottom: 2px solid #3a7bd5;
    padding-bottom: 10px;
    margin-top: 30px;
}

h3 {
    font-size: 1.5rem;
    margin-top: 25px;
}

/* 段落样式 */
p {
    margin-bottom: 20px;
    text-align: justify;
}

/* 容器样式 */
.container {
    width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    margin-bottom: 40px;
}

/* 卡片样式 */
.card {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 网格布局 */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

/* 列表样式增强 */
.feature-list {
    list-style-type: disc;
    padding-left: 20px;
    margin-bottom: 20px;
}

.feature-list li {
    margin-bottom: 10px;
    list-style-position: inside;
}

/* 注意事项样式 */
.note {
    background-color: #fff3cd;
    border-left: 4px solid #ffeaa7;
    padding: 15px;
    margin: 20px 0;
    border-radius: 0 4px 4px 0;
}

/* 高亮样式 */
highlight {
    background-color: #dfe6e9;
    padding: 2px 5px;
    border-radius: 3px;
    font-weight: bold;
}
/* 头部样式 */
.headerWrap {
    width: 100%;
    height: 100px;
    background-color: #6d98fe;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 999;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header {
    width: 1200px;
    height: 100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 60px;
    transition: transform 0.3s ease;
}

.logo img:hover {
    transform: scale(1.05);
}

.right {
    display: flex;
    align-items: center;
}

.nav-item {
    margin-left: 40px;
    font-size: 20px;
    color: #fff;
    cursor: pointer;
    position: relative;
    padding: 5px 0;
    transition: color 0.3s ease;
}

.nav-item:hover {
    color: #e1e8ed;
}

.nav-item.active {
    color: #ffca28;
    font-weight: bold;
}

.nav-item.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: #ffca28;
    border-radius: 3px;
}

/* 部分样式 */
section {
    padding: 40px 0;
}

/* 隐藏样式 */
.hidden {
    display: none;
}

/* 子导航样式 */
.sub-nav {
    display: flex;
    margin-bottom: 30px;
    padding: 10px 0;
    border-bottom: 1px solid #e0e0e0;
}

.sub-nav-item {
    margin-right: 30px;
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: #f0f0f0;
}

.sub-nav-item:hover {
    background-color: #e0e0e0;
}

.sub-nav-item.active {
    background-color: #3a7bd5;
    color: #fff;
}

/* 子部分样式 */
.sub-section {
    padding: 20px 0;
}

/* 信息框样式 */
.info-box {
    background-color: #e3f2fd;
    border-left: 4px solid #2196f3;
    padding: 15px;
    margin: 20px 0;
    border-radius: 0 4px 4px 0;
}

/* 警告框样式 */
.warning-box {
    background-color: #fff3cd;
    border-left: 4px solid #ffc107;
    padding: 15px;
    margin: 20px 0;
    border-radius: 0 4px 4px 0;
}

/* 成功框样式 */
.success-box {
    background-color: #d4edda;
    border-left: 4px solid #28a745;
    padding: 15px;
    margin: 20px 0;
    border-radius: 0 4px 4px 0;
}
li {
    list-style: none;
}
.headerWrap {
    width: 100%;
    height: 100px;
    background-color: #6d98fe;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 999;
}
.header {
    width: 1400px;
    height: 100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo img {
    height: 50px;
}
.right {
    display: flex;
}

.nav-item {
    margin-left: 30px;
    font-size: 20px;
    color: #fff;
}
.nav-item:hover {
    color: #ccc;
}

/* 视频样式 */
.content-video {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 20px 0;
    display: block;
}