/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

/* 通用容器样式 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 通用链接样式 */
a {
    color: #0066cc;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #0052a3;
    text-decoration: underline;
}

/* 通用按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #0066cc;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.btn:hover {
    background-color: #0052a3;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 102, 204, 0.2);
}

.btn:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: #f1f1f1;
    color: #333;
}

.btn-secondary:hover {
    background-color: #e5e5e5;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* 通用标题样式 */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: #333;
    margin-bottom: 15px;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 15px;
}

/* 通用列表样式 */
ul, ol {
    margin-bottom: 15px;
    padding-left: 25px;
}

li {
    margin-bottom: 8px;
}

/* 通用图片样式 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 响应式断点 */

/* 平板设备 */
@media (max-width: 992px) {
    .container {
        padding: 0 15px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.7rem;
    }
}

/* 手机设备 */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
}

/* 小屏幕手机 */
@media (max-width: 480px) {
    h1 {
        font-size: 1.6rem;
    }
    
    h2 {
        font-size: 1.3rem;
    }
    
    .btn {
        padding: 12px 15px;
        font-size: 0.9rem;
    }
}

/* 打印样式 */
@media print {
    body {
        background-color: white;
        color: black;
    }
    
    header, footer, .menu-toggle {
        display: none;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
    
    a {
        color: black;
        text-decoration: underline;
    }
}