/* 基础样式 */
body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    background-color: #f5e9d8; /* 米色背景 */
    color: #333;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden;
}

h1, h2, h3 {
    font-family: 'Open Sans', sans-serif;
    font-weight: bold;
    color: #4caf50; /* 绿色标题 */
}

a {
    text-decoration: none;
    color: #00bcd4; /* 蓝色链接 */
}

a:hover {
    text-decoration: underline;
}

.container {
    width: 100%;
    max-width: 1440px;
    padding: 0 20px;
    box-sizing: border-box;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 20px auto;
}

.header, .footer {
    background: linear-gradient(to right, #a5c1b4, #8bc34a); /* 渐变绿色 */
    color: #fff;
    text-align: center;
    padding: 20px 0;
    width: 100%;
}

.header h1, .footer p {
    margin: 0;
    font-size: 1.5rem;
}

.main-content {
    background-color: #ffffff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.card {
    background-color: #d7cec0; /* 棕色卡片 */
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: scale(1.05);
}

.image-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin: 20px 0;
}

.image-container img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

button {
    background-color: #8bc34a;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: transform 0.3s ease, background-color 0.3s ease;
}

button:hover {
    transform: scale(1.1);
    background-color: #689f38;
}

.code-block {
    background-color: #f5f5f5;
    color: #333;
    padding: 15px;
    border-radius: 5px;
    font-family: 'Courier New', monospace;
    overflow-x: auto;
    margin: 10px 0;
}

.hidden {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease;
}

.show {
    opacity: 1;
    transform: translateY(0);
}

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

    h1, h2, h3 {
        font-size: 1.2rem;
    }

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

@media (max-width: 480px) {
    .header h1, .footer p {
        font-size: 1.2rem;
    }

    .code-block {
        font-size: 0.9rem;
    }
}