/* 全局样式设置 */
body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #000046, #1cb5e0);
    color: #fff;
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3 {
    font-family: 'Futura', sans-serif;
    font-weight: bold;
    letter-spacing: 2px;
    text-align: center;
    margin: 20px 0;
}

h1 {
    font-size: 3rem;
    background: linear-gradient(90deg, #ff7f50, #f09819);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

p {
    font-size: 1.1rem;
    padding: 0 20px;
    margin: 10px 0;
}

a {
    color: #ff7f50;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

pre {
    background-color: #333;
    color: #fff;
    padding: 15px;
    border-radius: 10px;
    overflow-x: auto;
    font-size: 0.9rem;
}

code {
    color: #f09819;
    font-family: 'Courier New', Courier, monospace;
}

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

.item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    padding: 20px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.item:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin: 10px 0;
}

.button {
    position: relative;
    overflow: hidden;
    background: linear-gradient(90deg, #ff7f50, #f09819);
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1rem;
    margin: 20px auto;
    display: block;
}

.button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: all 0.5s ease;
}

.button:hover::before {
    width: 200px;
    height: 200px;
    opacity: 1;
}

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

    h1 {
        font-size: 2rem;
    }

    pre {
        font-size: 0.8rem;
    }
}

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

    h1 {
        font-size: 1.8rem;
    }

    p {
        font-size: 1rem;
    }

    .button {
        padding: 10px 20px;
    }
}