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

/* 体背景与字体 */
body {
    font-family: 'Roboto', 'Open Sans', sans-serif;
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: #dcdcdc;
    line-height: 1.6;
    padding: 20px;
}

/* 标题样式 */
h1, h2, h3, h4 {
    font-family: 'Poppins', 'Futura', sans-serif;
    color: #ffffff;
    margin-bottom: 20px;
}

h1 {
    font-size: 3rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

h2 {
    font-size: 2.5rem;
    margin-top: 40px;
}

h3 {
    font-size: 2rem;
    margin-top: 30px;
}

h4 {
    font-size: 1.5rem;
    margin-top: 25px;
}

/* 段落样式 */
p {
    font-size: 1rem;
    margin-bottom: 20px;
    color: #dcdcdc;
}

/* 网格布局 */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 40px 0;
}

.grid-item {
    background-color: rgba(245, 245, 245, 0.1);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

/* 按钮样式 */
.button {
    position: relative;
    display: inline-block;
    padding: 10px 20px;
    background: linear-gradient(135deg, #6a11cb, #2575fc);
    color: #ffffff;
    font-size: 1rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    overflow: hidden;
    transition: all 0.3s ease;
}

.button:hover {
    background: linear-gradient(135deg, #2575fc, #6a11cb);
}

.button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 165, 0, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: all 0.3s ease;
}

.button:hover::before {
    width: 100px;
    height: 100px;
    opacity: 1;
}

/* 代码块样式 */
pre {
    background-color: rgba(0, 0, 0, 0.7);
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
}

code {
    font-family: 'Courier New', Courier, monospace;
    color: #00ff90;
}

/* 图片样式 */
img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 20px;
}

/* 示范数据展示区分 */
.example-data {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 8px;
    margin-top: 40px;
}

/* 提示信息 */
.notice {
    text-align: center;
    font-size: 1.2rem;
    margin-bottom: 40px;
    color: #ffcc00;
}

/* 响应式设计 */
@media (max-width: 1440px) { /* 无特殊调整 */
}

@media (max-width: 1200px) { /* 无特殊调整 */
}

@media (max-width: 1024px) { 
    h1 { font-size: 2.5rem; }
    .grid-container { gap: 15px; }
}

@media (max-width: 768px) { 
    h1 { font-size: 2rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.75rem; }
    .grid-container { grid-template-columns: 1fr; }
}

@media (max-width: 480px) { 
    h1 { font-size: 1.75rem; }
    .button { padding: 8px 16px; font-size: 0.9rem; }
}

@media (max-width: 320px) { 
    h1 { font-size: 1.5rem; }
    .button { padding: 6px 12px; font-size: 0.8rem; }
}