/* 全局样式定义 */
body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    color: #fff;
    background: linear-gradient(135deg, #0A1F44, #6C5CE7);
    overflow-x: hidden;
}

h1, h2, h3, h4, p {
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.header {
    text-align: center;
    padding: 40px 0;
    background: linear-gradient(90deg, #6C5CE7, #FF6F91);
    color: #fff;
    font-size: 2rem;
    font-weight: bold;
    position: relative;
}

.header::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 2px;
    background: linear-gradient(90deg, #00FFF0, transparent);
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.grid-item {
    background: rgba(0, 255, 240, 0.1);
    border: 1px solid #00FFF0;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease;
}

.grid-item:hover {
    box-shadow: 0 0 15px #FF6F91;
    transform: scale(1.05);
}

.card {
    perspective: 1000px;
    width: 100%;
    height: 100%;
}

.card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.card:hover .card-inner {
    transform: rotateY(180deg);
}

.card-front, .card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 10px;
    padding: 20px;
    box-sizing: border-box;
}

.card-front {
    background: #6C5CE7;
    color: #fff;
}

.card-back {
    background: #FF6F91;
    color: #fff;
    transform: rotateY(180deg);
}

.button {
    background: #6C5CE7;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.button:hover {
    box-shadow: 0 0 10px #00FFF0;
}

.code-block {
    background: rgba(0, 0, 0, 0.5);
    padding: 15px;
    border-radius: 5px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.4;
    overflow-x: auto;
}

.image-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.image-container img {
    width: 150px;
    height: 150px;
    object-fit: cover;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.image-container img:hover {
    transform: scale(1.1);
}

@media (max-width: 768px) {
    .grid-container {
        grid-template-columns: 1fr;
    }

    .header {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }

    .button {
        padding: 8px 16px;
        font-size: 0.9rem;
    }
}