body {
    margin: 0;
    font-family: 'Roboto', 'Helvetica', sans-serif;
    color: #ffffff;
    background-color: #121212;
    line-height: 1.6;
    overflow-x: hidden;
}
.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 20px;
}
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
}
.header .logo {
    font-size: 24px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 2px;
}
.navbar {
    display: flex;
    gap: 20px;
}
.navbar a {
    color: #00ff7f;
    text-decoration: none;
    transition: color 0.3s ease;
}
.navbar a:hover {
    color: #00ffff;
}
.hero {
    height: 100vh;
    background: url('https://images.gptkong.com/demo/sample1.png'), url('https://images.gptkong.com/demo/sample2.png');
    background-size: cover;
    background-position: center;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.8), rgba(0, 128, 128, 0.8));
    z-index: 1;
}
.hero-content {
    position: relative;
    z-index: 2;
}
.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
}
.hero p {
    font-size: 20px;
    max-width: 800px;
    margin: 0 auto;
}
.grid-container {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 20px;
    margin-top: 100px;
}
.grid-item {
    background: rgba(0, 0, 0, 0.6);
    padding: 20px;
    border-radius: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.grid-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 255, 127, 0.5);
}
.grid-item img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    margin-bottom: 10px;
}
.animate-element {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s ease-in-out;
}
.animate-element.in-view {
    opacity: 1;
    transform: translateY(0);
}
@media (max-width: 1200px) {
    .grid-container {
        grid-template-columns: repeat(8, 1fr);
    }
    .hero h1 {
        font-size: 40px;
    }
}
@media (max-width: 1024px) {
    .grid-container {
        grid-template-columns: repeat(6, 1fr);
    }
    .hero h1 {
        font-size: 36px;
    }
}
@media (max-width: 768px) {
    .grid-container {
        grid-template-columns: repeat(4, 1fr);
    }
    .header .logo {
        font-size: 20px;
    }
    .navbar {
        flex-direction: column;
        gap: 10px;
    }
    .hero h1 {
        font-size: 32px;
    }
}
@media (max-width: 480px) {
    .grid-container {
        grid-template-columns: repeat(2, 1fr);
    }
    .hero h1 {
        font-size: 28px;
    }
}