/* 全局样式 */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

nav {
    background-color: #00A9E0; /* 搜狗蓝 */
    padding: 10px;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
}

nav li {
    margin: 0 20px;
}

nav a {
    color: white;
    text-decoration: none;
    font-size: 18px;
}

.hero {
    background-color: #00A9E0;
    color: white;
    padding: 100px 0;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    font-weight: bold;
}

.hero p {
    font-size: 20px;
}

.features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 40px;
    background-color: #fff;
}

.feature {
    width: 45%;
    padding: 20px;
    margin: 10px;
    background-color: #f9f9f9;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.feature h2 {
    color: #00A9E0;
    font-size: 24px;
    margin-bottom: 10px;
}

.feature p {
    font-size: 16px;
    line-height: 1.6;
}

.about {
    padding: 40px;
    background-color: #fff;
}

.about h2 {
    color: #00A9E0;
    font-size: 28px;
    margin-bottom: 20px;
}

.about p {
    font-size: 16px;
    line-height: 1.6;
}

.download {
    text-align: center;
    padding: 40px;
    background-color: #00A9E0;
    color: white;
}

.download-btn {
    background-color: #ff6f61;
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 16px;
    cursor: pointer;
    border-radius: 5px;
    text-decoration: none;
}

.download-btn:hover {
    background-color: #e55b4a;
}

footer {
    text-align: center;
    padding: 20px;
    background-color: #00A9E0;
    color: white;
}