/* 全局样式 */
body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #1e3c72, #2a5298); /* 深空蓝渐变背景 */
    color: #ffffff;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

/* 标题样式 */
h1, h2, h3, h4 {
    font-family: 'Futura', sans-serif;
    color: #b19cd9; /* 霓虹紫色 */
    margin: 20px 0;
}

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

/* 导航盘 */
.nav-circle {
    position: fixed;
    top: 50%;
    left: 5%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1000;
}

.nav-circle:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* 导航子选项 */
.nav-options {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    padding: 10px;
}

.nav-circle.active .nav-options {
    display: block;
}

/* 导航链接 */
.nav-options a {
    display: block;
    color: #ffffff;
    text-decoration: none;
    margin: 5px 0;
    transition: color 0.3s;
}

.nav-options a:hover {
    color: #b19cd9;
}

/* 图片样式 */
img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 10px 0;
}

/* 文章样式 */
article {
    background: rgba(0, 0, 0, 0.5);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    margin-bottom: 40px;
}

pre {
    background: #2d3436;
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    color: #f1f2f6;
    font-family: 'Courier New', Courier, monospace;
    margin: 10px 0;
}

/* 微交互按钮 */
button {
    background-color: #b19cd9;
    color: #ffffff;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 4px;
}

button:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 16px rgba(177, 156, 217, 0.5);
}

/* 动画效果 */
@keyframes meteor {
    from { transform: translateX(-100%); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

.meteor {
    position: absolute;
    top: 20%;
    left: -50px;
    width: 50px;
    height: 50px;
    background: radial-gradient(circle, #ff7675, transparent);
    animation: meteor 3s linear infinite;
}

/* 背景图片 */
.background-image {
    background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center center;
    background-size: cover;
    height: 100vh;
    position: relative;
}

/* 信息架构 */
.section {
    margin: 40px 0;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
}

/* 项目展示 */
.container .item {
    flex: 1 1 calc(33.333% - 20px);
    margin: 10px;
    background-color: rgba(45, 52, 54, 0.8);
    color: #f1f2f6;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

@media (max-width: 1440px) {
    .container {
        padding: 15px;
    }
}

@media (max-width: 1200px) {
    .container {
        max-width: 1000px;
    }
}

@media (max-width: 1024px) {
    .container {
        max-width: 900px;
    }
}

@media (max-width: 768px) {
    .nav-circle {
        left: 2%;
    }
    .container .item {
        flex: 1 1 calc(50% - 20px);
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 24px;
    }
    .container .item {
        flex: 1 1 100%;
    }
}

@media (max-width: 320px) {
    h1 {
        font-size: 20px;
    }
    .nav-circle {
        width: 50px;
        height: 50px;
    }
}