* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 50%, #16213e 100%);
    color: #fff;
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

header {
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(78, 205, 196, 0.2);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    font-size: 28px;
    font-weight: bold;
    background: linear-gradient(90deg, #4eccd8, #0f3460);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: #4eccd8;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #4eccd8, #0f3460);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

.hero {
    padding: 150px 0 100px;
    text-align: center;
    background: linear-gradient(180deg, rgba(15, 15, 35, 0.9) 0%, rgba(26, 26, 46, 0.9) 100%);
}

.hero h1 {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
    background: linear-gradient(90deg, #4eccd8, #0f3460, #e94560);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 18px;
    color: #aaa;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.download-btn {
    display: inline-block;
    padding: 15px 40px;
    font-size: 18px;
    font-weight: bold;
    color: #fff;
    background: linear-gradient(90deg, #4eccd8, #0f3460);
    border: none;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(78, 205, 196, 0.3);
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(78, 205, 196, 0.5);
}

.section {
    padding: 80px 0;
}

.section-title {
    font-size: 36px;
    text-align: center;
    margin-bottom: 60px;
    background: linear-gradient(90deg, #4eccd8, #0f3460);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.product-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(78, 205, 196, 0.1);
}

.product-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-10px);
    border-color: rgba(78, 205, 196, 0.3);
}

.product-card i {
    font-size: 48px;
    margin-bottom: 20px;
}

.product-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #4eccd8;
}

.product-card p {
    color: #aaa;
    font-size: 14px;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.news-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 25px;
    transition: all 0.3s ease;
    border: 1px solid rgba(78, 205, 196, 0.1);
}

.news-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.news-card .news-date {
    color: #4eccd8;
    font-size: 14px;
    margin-bottom: 15px;
}

.news-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
    line-height: 1.5;
}

.news-card p {
    color: #aaa;
    font-size: 14px;
    line-height: 1.6;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-content img {
    width: 100%;
    border-radius: 20px;
}

.about-content h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: #4eccd8;
}

.about-content p {
    color: #aaa;
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 15px;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid rgba(78, 205, 196, 0.1);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    color: #4eccd8;
    font-size: 16px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(78, 205, 196, 0.2);
    border-radius: 10px;
    color: #fff;
    font-size: 16px;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #4eccd8;
}

.form-group textarea {
    height: 150px;
    resize: none;
}

.submit-btn {
    width: 100%;
    padding: 15px;
    font-size: 18px;
    font-weight: bold;
    color: #fff;
    background: linear-gradient(90deg, #4eccd8, #0f3460);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(78, 205, 196, 0.5);
}

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

.feature-item {
    text-align: center;
    padding: 30px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    border: 1px solid rgba(78, 205, 196, 0.1);
}

.feature-item i {
    font-size: 36px;
    margin-bottom: 15px;
}

.feature-item h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #4eccd8;
}

.feature-item p {
    color: #aaa;
    font-size: 14px;
}

footer {
    background: rgba(0, 0, 0, 0.8);
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid rgba(78, 205, 196, 0.2);
}

footer p {
    color: #aaa;
    font-size: 14px;
}

.footer-links {
    margin-bottom: 20px;
}

.footer-links a {
    color: #4eccd8;
    text-decoration: none;
    margin: 0 15px;
    font-size: 14px;
}

.footer-links a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .nav-links {
        gap: 15px;
    }

    .nav-links a {
        font-size: 14px;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero p {
        font-size: 16px;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 28px;
    }

    .news-grid {
        grid-template-columns: 1fr;
    }
}