body {
    margin: 0;
    font-family: 'Open Sans', sans-serif;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    line-height: 1.6;
}

header {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: url("https://images.gptkong.com/demo/sample1.png") no-repeat center/cover, linear-gradient(to bottom, #1e3c72 0%, #2a5298 100%);
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 200%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transform: rotate(30deg);
    animation: float 15s infinite linear;
}

@keyframes float {
    0% { transform: translateX(-50%) rotate(30deg); }
    100% { transform: translateX(0) rotate(30deg); }
}

h1 {
    font-size: 4rem;
    font-weight: bold;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
    letter-spacing: 2px;
    position: relative;
    z-index: 2;
}

h1::after {
    content: '梦想从这里起航';
    display: block;
    font-size: 1.5rem;
    margin-top: 1rem;
    color: #ff9800;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    padding: 20px;
    margin: 20px auto;
    max-width: 1400px;
}

.card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

.card:hover {
    transform: scale(1.05) rotate(2deg);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.card img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.card-content {
    padding: 15px;
    color: white;
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #ffeb3b;
}

.card p {
    font-size: 1rem;
    line-height: 1.5;
}

code {
    background: rgba(0, 0, 0, 0.5);
    color: #00ff00;
    padding: 5px;
    border-radius: 5px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    display: inline-block;
}

pre {
    background: rgba(0, 0, 0, 0.6);
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
}

th, td {
    padding: 10px;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

th {
    background: rgba(0, 0, 0, 0.2);
    color: #ff9800;
}

td {
    color: #fff;
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .card h3 {
        font-size: 1.2rem;
    }

    code {
        font-size: 0.8rem;
    }
}

footer {
    text-align: center;
    padding: 20px;
    background: rgba(0, 0, 0, 0.3);
    color: #ccc;
    font-size: 0.9rem;
}