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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: linear-gradient(90deg, #0d1117 0%, #161b22 50%, #0d1117 100%);
    border-bottom: 1px solid #30363d;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
}

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

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #00d4ff;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: #c9d1d9;
    text-decoration: none;
    font-size: 16px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: #00d4ff;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #00d4ff;
    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(0, 212, 255, 0.1) 0%, transparent 100%);
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    background: linear-gradient(90deg, #00d4ff, #7b2fff, #ff00ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 18px;
    color: #8b949e;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.btn {
    padding: 15px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    font-size: 16px;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(90deg, #00d4ff, #0099cc);
    color: #fff;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.6);
}

.btn-secondary {
    background: transparent;
    border: 2px solid #00d4ff;
    color: #00d4ff;
}

.btn-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-3px);
}

.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    padding: 60px 0;
    background: rgba(0, 0, 0, 0.3);
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item .number {
    font-size: 36px;
    font-weight: bold;
    color: #00d4ff;
    margin-bottom: 10px;
}

.stat-item .label {
    color: #8b949e;
    font-size: 14px;
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 36px;
    margin-bottom: 20px;
    color: #fff;
}

.section-title p {
    color: #8b949e;
    font-size: 16px;
}

.products {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
    border-radius: 15px;
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    border-color: #00d4ff;
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

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

.product-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #fff;
}

.product-card p {
    color: #8b949e;
    font-size: 14px;
    line-height: 1.8;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
    border-radius: 15px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.news-card:hover {
    transform: translateY(-5px);
    border-color: #7b2fff;
}

.news-image {
    height: 180px;
    background: linear-gradient(90deg, #00d4ff, #7b2fff);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
}

.news-content {
    padding: 25px;
}

.news-date {
    color: #00d4ff;
    font-size: 12px;
    margin-bottom: 10px;
}

.news-card h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #fff;
    line-height: 1.4;
}

.news-card p {
    color: #8b949e;
    font-size: 14px;
    line-height: 1.8;
}

.about {
    background: rgba(0, 0, 0, 0.3);
}

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

.about-text h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: #fff;
}

.about-text p {
    color: #8b949e;
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-features {
    list-style: none;
    padding: 0;
}

.about-features li {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    color: #c9d1d9;
}

.about-features li .check {
    color: #00ff88;
    font-size: 20px;
}

.contact {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(123, 47, 255, 0.1) 100%);
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: rgba(0, 0, 0, 0.5);
    padding: 40px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.form-group label {
    display: block;
    margin-bottom: 10px;
    color: #c9d1d9;
    font-size: 14px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    font-size: 16px;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #00d4ff;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

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

footer {
    background: #0d1117;
    padding: 60px 0 30px;
    border-top: 1px solid #30363d;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #fff;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #8b949e;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #00d4ff;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #30363d;
    color: #8b949e;
    font-size: 14px;
}

.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(90deg, #00d4ff, #7b2fff);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.scroll-to-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-5px);
}

@media (max-width: 768px) {
    .nav-links {
        gap: 15px;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}