* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.hero-with-bg {
    height: 100vh;
    width: 100%;
    background-size: cover;
    background-position: center;
}
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}
.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.hero-with-bg {
    height: 100vh;
    width: 100%;
    background-size: cover;
    background-position: center;
}
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}
.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}
.logo {
    font-size: 24px;
    font-weight: bold;
    color: #2c3e50;
}
.logo span {
    color: #3498db;
}
nav ul {
    display: flex;
    list-style: none;
}
nav ul li {
    margin-left: 30px;
}
nav ul li a {
    text-decoration: none;
    color: #2c3e50;
    font-weight: 500;
    transition: color 0.3s;
}
nav ul li a:hover {
    color: #3498db;
}
.hero {
    background: linear-gradient(135deg, #3498db, #2c3e50);
    color: #fff;
    padding: 150px 0 100px;
    text-align: center;
    margin: 0;
}
.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}
.hero p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 30px;
}
.btn {
    display: inline-block;
    background-color: #fff;
    color: #3498db;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s;
    margin: 10px;
}
.btn:hover {
    background-color: #f1f1f1;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}
.btn-outline {
    background-color: transparent;
    border: 2px solid #fff;
    color: #fff;
}
.btn-outline:hover {
    background-color: #fff;
    color: #3498db;
}
section {
    padding: 80px 0;
}
.section-title {
    text-align: center;
    margin-bottom: 60px;
}
.section-title h2 {
    font-size: 2rem;
    color: #2c3e50;
    position: relative;
    padding-bottom: 15px;
}
.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: #3498db;
}
.about-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}
.about-text {
    flex: 1;
    min-width: 300px;
    padding-right: 40px;
}
.about-image {
    flex: 1;
    min-width: 300px;
    text-align: center;
}
.about-image img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}
.features {
    background-color: #f5f7fa;
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}
.feature-card {
    background-color: #fff;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}
.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}
.feature-icon {
    font-size: 40px;
    color: #3498db;
    margin-bottom: 20px;
}
.feature-card h3 {
    margin-bottom: 15px;
    color: #2c3e50;
}

.hero-image {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    display: block;
}

.hero-with-bg {
    background-size: cover;
    background-position: center;
}
.product {
    background-color: #fff;
}
.product-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}
.product-image {
    flex: 1;
    min-width: 300px;
    text-align: center;
}
.product-image img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}
.product-text {
    flex: 1;
    min-width: 300px;
    padding-left: 40px;
}
.product-text h3 {
    color: #2c3e50;
    margin-bottom: 20px;
}
.product-text ul {
    list-style-type: none;
    margin-bottom: 30px;
}
.product-text ul li {
    margin-bottom: 15px;
    position: relative;
    padding-left: 30px;
}
.product-text ul li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #3498db;
    font-weight: bold;
}
/* App download page styles */
.app-features {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-card {
    background: white;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    text-align: center;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 2.5rem;
    color: #2a7de1;
    margin-bottom: 20px;
}

.app-download {
    padding: 80px 0;
    text-align: center;
}

.download-platforms {
    display: flex;
    justify-content: center;
    gap: 50px;
    margin-top: 50px;
    flex-wrap: wrap;
}

.platform-card {
    background: white;
    border-radius: 8px;
    padding: 40px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    min-width: 200px;
}

.platform-card i {
    margin-bottom: 20px;
    color: #2a7de1;
}

footer {
    background-color: #2c3e50;
    color: #fff;
    padding: 60px 0 30px;
}
.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 40px;
}
.footer-column {
    flex: 1;
    min-width: 250px;
    margin-bottom: 30px;
}
.footer-column h3 {
    font-size: 18px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}
.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: #3498db;
}
.footer-column p, .footer-column a {
    color: #bdc3c7;
    margin-bottom: 10px;
    display: block;
    text-decoration: none;
    transition: color 0.3s;
}
.footer-column a:hover {
    color: #3498db;
}
.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #bdc3c7;
}
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    nav ul {
        margin-top: 20px;
        justify-content: center;
    }
    nav ul li {
        margin: 0 15px;
    }
    .hero {
        padding: 120px 0 80px;
    }
    .hero h1 {
        font-size: 2rem;
    }
    .about-text, .product-text {
        padding: 0;
        margin-bottom: 40px;
    }
    .about-content, .product-content {
        flex-direction: column;
    }
    .product-content {
        flex-direction: column-reverse;
    }
}