/* 基础样式 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #000000, #000833);
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: #00ffff;
    text-transform: uppercase;
    letter-spacing: 1px;
}
p {
    font-size: 1rem;
    color: #d3d3d3;
    margin-bottom: 1.5rem;
}
a {
    color: #00bfff;
    text-decoration: none;
    transition: color 0.3s ease-in-out;
}
a:hover {
    color: #00ffff;
}
pre {
    background-color: rgba(0, 51, 102, 0.7);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    max-width: 100%;
    font-size: 0.9rem;
    margin: 1rem 0;
}
code {
    color: #00ffff;
    font-family: 'Courier New', Courier, monospace;
}
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
}
.grid-item {
    background: rgba(0, 0, 0, 0.8);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 255, 255, 0.2);
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}
.grid-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 255, 255, 0.4);
}
.pulse-line {
    width: 100px;
    height: 2px;
    background-color: #00ffff;
    animation: pulse 2s infinite;
    margin: 20px auto;
}
@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.5; }
    100% { transform: scale(1); opacity: 1; }
}
.image-box {
    position: relative;
    width: 100%;
    max-width: 320px;
    margin: 0 auto 20px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 255, 255, 0.3);
}
.image-box img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease-in-out;
}
.image-box img:hover {
    transform: scale(1.1);
}
.tip {
    text-align: center;
    font-size: 0.9rem;
    color: #cccccc;
    margin-top: 10px;
}
@media (max-width: 768px) {
    .grid-container {
        grid-template-columns: 1fr;
    }
    pre {
        font-size: 0.8rem;
    }
}
@media (min-width: 1200px) {
    .grid-container {
        grid-template-columns: repeat(3, 1fr);
    }
}