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

/* 全局字体设置 */
body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: #ffffff;
    line-height: 1.6;
    padding: 20px;
}

/* 标题字体设置 */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    margin-bottom: 15px;
    color: #ffeb3b;
}

/* 主要容器设置 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 头部样式 */
header {
    text-align: center;
    padding: 50px 0;
    background: radial-gradient(circle, rgba(255,87,34,1) 0%, rgba(255,152,0,1) 100%);
    border-radius: 15px;
    margin-bottom: 40px;
}

header h1 {
    font-size: 2.5em;
    color: #ffffff;
}

/* 导航栏样式 */
nav {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 50px;
}

nav a {
    text-decoration: none;
    color: #ffffff;
    font-size: 1.1em;
    position: relative;
    transition: color 0.3s ease;
}

nav a::after {
    content: '';
    display: block;
    width: 0;
    height: 2px;
    background: #ffeb3b;
    transition: width 0.3s;
    position: absolute;
    bottom: -5px;
    left: 0;
}

nav a:hover::after {
    width: 100%;
}

nav a:hover {
    color: #ffeb3b;
}

/* 主内容区域 */
.main-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

/* 卡片样式 */
.card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    backdrop-filter: blur(8.5px);
    -webkit-backdrop-filter: blur(8.5px);
    border: 1px solid rgba(255, 255, 255, 0.18);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.37);
}

/* 按钮样式 */
.button {
    display: inline-block;
    padding: 10px 25px;
    margin-top: 15px;
    background: linear-gradient(to right, #ff7e5f, #feb47b);
    color: #ffffff;
    text-decoration: none;
    border-radius: 25px;
    transition: background 0.3s ease, transform 0.3s ease;
    cursor: pointer;
}

.button:hover {
    background: linear-gradient(to right, #ff5f6d, #ffc371);
    transform: scale(1.05);
}

/* 示例展示区域 */
.sample-display {
    background: rgba(0, 0, 0, 0.5);
    padding: 30px;
    border-radius: 15px;
    margin-top: 50px;
}

.sample-display h2 {
    color: #ffeb3b;
    margin-bottom: 20px;
}

.sample-display article {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 10px;
}

.sample-display pre {
    background: #2a5298;
    padding: 15px;
    border-radius: 10px;
    overflow-x: auto;
    margin-top: 10px;
    color: #ffffff;
}

.sample-display code {
    font-family: 'Courier New', Courier, monospace;
    color: #ffeb3b;
}

/* 图片样式 */
img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    margin-bottom: 15px;
}

/* 提示信息样式 */
.notice {
    text-align: center;
    font-size: 1.2em;
    margin-top: 40px;
    color: #ffeb3b;
}

/* 响应式设计 */
@media (max-width: 1440px) {
    header h1 {
        font-size: 2.2em;
    }
}

@media (max-width: 1200px) {
    .main-content {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 1024px) {
    nav {
        flex-direction: column;
        gap: 15px;
    }

    .button {
        padding: 8px 20px;
    }
}

@media (max-width: 768px) {
    header {
        padding: 30px 0;
    }

    .main-content {
        grid-template-columns: 1fr;
    }

    nav a {
        font-size: 1em;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.8em;
    }

    nav a {
        font-size: 0.9em;
    }

    .button {
        padding: 6px 15px;
    }
}

@media (max-width: 320px) {
    body {
        padding: 10px;
    }

    header h1 {
        font-size: 1.5em;
    }

    .button {
        padding: 5px 10px;
        font-size: 0.8em;
    }
}

/* 动画效果 */
@keyframes aurora-move {
    0% {
        background: radial-gradient(circle, rgba(255,87,34,1), transparent);
    }
    50% {
        background: radial-gradient(circle, rgba(255,152,0,1), transparent);
    }
    100% {
        background: radial-gradient(circle, rgba(255,87,34,1), transparent);
    }
}

.animated-background {
    animation: aurora-move 15s linear infinite;
    background-size: 400% 400%;
}

/* 链接样式 */
a {
    color: #feb47b;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #ff7e5f;
}

/* 列表样式 */
ul {
    list-style-type: disc;
    margin-left: 20px;
    margin-top: 10px;
}

/* 表格样式 */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table, th, td {
    border: 1px solid #ffffff;
}

th, td {
    padding: 10px;
    text-align: left;
}

th {
    background: rgba(255, 235, 59, 0.8);
    color: #000000;
}

td {
    background: rgba(255, 255, 255, 0.1);
}

/* 表单元素隐藏（防止显示） */
input, textarea, select, button {
    display: none;
}