/* 全局样式 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Open Sans', sans-serif;
    background: linear-gradient(135deg, #4A90E2, #9013FE);
    color: #FFFFFF;
    line-height: 1.6;
    overflow-x: hidden;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    box-sizing: border-box;
}
h1, h2, h3, h4, h5, h6 {
    font-family: 'Roboto Bold', sans-serif;
    margin: 0 0 20px;
}
p {
    font-size: 16px;
    margin: 0 0 15px;
}
a {
    text-decoration: none;
    color: #FFA500;
}
button {
    font-family: 'Roboto Medium', sans-serif;
    font-size: 18px;
    color: #FFFFFF;
    border: none;
    border-radius: 25px;
    padding: 12px 25px;
    cursor: pointer;
    transition: all 0.3s ease;
}
button:hover {
    opacity: 0.9;
}

/* 头部导航 */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    background: linear-gradient(135deg, #4A90E2, #9013FE);
}
header .logo {
    font-size: 24px;
    font-weight: bold;
    color: #FFFFFF;
}
header nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}
header nav ul li a {
    color: #F5F5F5;
    font-size: 16px;
}
header .login-btn {
    background-color: #FFA500;
    padding: 10px 20px;
    border-radius: 20px;
}

/* 英雄区 */
.hero {
    background: url('https://images.gptkong.com/product/logitech/logitech_m1.png') no-repeat center/cover;
    height: 500px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #FFFFFF;
}
.hero h1 {
    font-size: 48px;
    margin-bottom: 15px;
}
.hero p {
    font-size: 24px;
    margin-bottom: 25px;
}
.hero .cta-buttons {
    display: flex;
    gap: 20px;
}
.hero .cta-buttons button:first-child {
    background-color: #FFA500;
}
.hero .cta-buttons button:last-child {
    background-color: #34C759;
}

/* 产品展示 */
.product-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 50px 0;
    background: #F5F5F5;
    padding: 30px;
    border-radius: 10px;
    color: #333333;
}
.product-section img {
    max-width: 40%;
    border-radius: 10px;
}
.product-section .details {
    max-width: 50%;
}
.product-section .details h3 {
    font-size: 28px;
    margin-bottom: 15px;
}
.product-section .details ul {
    list-style: disc;
    padding-left: 20px;
}

/* 技术参数 */
.specs-section {
    background: #F5F5F5;
    padding: 30px;
    border-radius: 10px;
    margin: 50px 0;
    color: #333333;
}
.specs-section table {
    width: 100%;
    border-collapse: collapse;
}
.specs-section th, .specs-section td {
    border: 1px solid #CCCCCC;
    padding: 10px;
    text-align: left;
}

/* 用户价值 */
.value-section {
    background: linear-gradient(135deg, #4A90E2, #9013FE);
    padding: 30px;
    border-radius: 10px;
    margin: 50px 0;
    color: #FFFFFF;
    text-align: center;
}
.value-section h2 {
    font-size: 36px;
    margin-bottom: 20px;
}
.value-section .features {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 20px;
}
.value-section .feature {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 10px;
    width: 45%;
}

/* 底部信息 */
footer {
    background: #333333;
    color: #FFFFFF;
    padding: 30px;
    text-align: center;
}
footer .links {
    margin-bottom: 20px;
}
footer .links a {
    color: #FFFFFF;
    margin: 0 10px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 10px;
    }
    header nav ul {
        flex-direction: column;
        gap: 10px;
    }
    .hero {
        height: auto;
        padding: 30px 0;
    }
    .product-section {
        flex-direction: column;
        text-align: center;
    }
    .product-section img {
        max-width: 100%;
        margin-bottom: 20px;
    }
    .value-section .features {
        flex-direction: column;
    }
    .value-section .feature {
        width: 100%;
    }
}