/* 基础样式与全局设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: #F5F5F5;
    background: linear-gradient(135deg, #1A237E, #000000);
    background-attachment: fixed;
    overflow-x: hidden;
}
h1, h2, h3 {
    font-weight: 700;
    color: #FF9800;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}
p {
    font-weight: 400;
    font-size: 1rem;
    color: #E0E0E0;
    margin-bottom: 1.5rem;
}
a {
    color: #FFC107;
    text-decoration: none;
    transition: color 0.3s ease-in-out;
}
a:hover {
    color: #FF9800;
}
button {
    background-color: #FF9800;
    color: #1A237E;
    border: none;
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease-in-out;
}
button:hover {
    background-color: #FFC107;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}
section {
    margin-bottom: 4rem;
}
.hero-banner {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #FFFFFF;
    position: relative;
    overflow: hidden;
}
.hero-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center/cover,
                linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5));
    z-index: -1;
}
.hero-banner h1 {
    font-size: 3rem;
    letter-spacing: 2px;
    animation: fadeIn 2s ease-in-out;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}
.grid-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}
.card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 1.5rem;
    transition: transform 0.3s ease-in-out;
}
.card:hover {
    transform: scale(1.05);
}
.data-node {
    width: 10px;
    height: 10px;
    background: #FF9800;
    border-radius: 50%;
    animation: dataFlow 2s infinite;
}
@keyframes dataFlow {
    0% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(-20px); opacity: 0; }
}
.table-container {
    overflow-x: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 2rem;
}
th, td {
    padding: 1rem;
    text-align: left;
    border: 1px solid #424242;
}
@media (max-width: 768px) {
    .hero-banner h1 {
        font-size: 2rem;
    }
    .grid-section {
        grid-template-columns: 1fr;
    }
}