/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 全局样式 */
body {
    font-family: 'Open Sans', sans-serif;
    color: #ffffff;
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    background-size: 300% 300%;
    animation: gradientFlow 15s ease infinite;
    line-height: 1.6;
    padding: 20px;
}

@keyframes gradientFlow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: auto;
    padding: 20px;
}

/* 标题样式 */
h1, h2, h3, h4 {
    font-family: 'Montserrat', sans-serif;
    color: #ffffff;
    text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5);
}

h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

h2 {
    font-size: 2.5rem;
    margin: 40px 0 20px 0;
}

h3 {
    font-size: 2rem;
    margin: 30px 0 15px 0;
}

h4 {
    font-size: 1.5rem;
    margin: 25px 0 10px 0;
}

/* 段落样式 */
p {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: #e0e0e0;
}

/* 代码块样式 */
pre {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    font-family: 'Courier New', Courier, monospace;
    margin-bottom: 20px;
}

code {
    color: #00ffcc;
    font-size: 1rem;
}

/* 列表样式 */
ul, ol {
    margin-left: 20px;
    margin-bottom: 20px;
}

li {
    margin-bottom: 10px;
}

/* 按钮样式 */
.button {
    display: inline-block;
    padding: 10px 20px;
    background-color: #ffffff;
    color: #000000;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    text-decoration: none;
    font-weight: bold;
}

.button:hover::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300%;
    height: 300%;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: glowEffect 1s ease-out;
}

@keyframes glowEffect {
    from {
        opacity: 1;
        transform: translate(-50%, -50%) scale(0);
    }
    to {
        opacity: 0;
        transform: translate(-50%, -50%) scale(1.5);
    }
}

/* 导航栏样式 */
nav {
    background: rgba(0, 0, 0, 0.5);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 30px;
}

nav ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

nav li {
    list-style: none;
    margin: 0 15px;
}

nav a {
    color: #ffffff;
    text-decoration: none;
    font-size: 1.2rem;
    position: relative;
    padding-bottom: 5px;
}

nav a::after {
    content: '';
    position: absolute;
    width: 0%;
    height: 2px;
    background: #00ffcc;
    left: 0;
    bottom: 0;
    transition: width 0.3s ease;
}

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

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

/* 模块化布局 */
.module {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    margin-bottom: 30px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

/* 响应式设计 */
@media (max-width: 1440px) {
    h1 {
        font-size: 2.8rem;
    }
    h2 {
        font-size: 2.3rem;
    }
    h3 {
        font-size: 1.8rem;
    }
    h4 {
        font-size: 1.3rem;
    }
}

@media (max-width: 1200px) {
    .container {
        padding: 15px;
    }
}

@media (max-width: 1024px) {
    nav ul {
        flex-direction: column;
        align-items: center;
    }
    nav li {
        margin: 10px 0;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.2rem;
    }
    h2 {
        font-size: 2rem;
    }
    h3 {
        font-size: 1.6rem;
    }
    h4 {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.8rem;
    }
    h2 {
        font-size: 1.6rem;
    }
    h3 {
        font-size: 1.4rem;
    }
    h4 {
        font-size: 1rem;
    }
    .button {
        padding: 8px 16px;
        font-size: 0.9rem;
    }
}

@media (max-width: 320px) {
    body {
        padding: 10px;
    }
    h1 {
        font-size: 1.5rem;
    }
    h2 {
        font-size: 1.4rem;
    }
    h3 {
        font-size: 1.2rem;
    }
    h4 {
        font-size: 0.9rem;
    }
    .button {
        padding: 6px 12px;
        font-size: 0.8rem;
    }
}