/* 全局样式设置 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #1A237E, #6200EA, #AA00FF);
    color: #FFFFFF;
    overflow-x: hidden;
}

/* 固定导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 35, 126, 0.8);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 50px;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.navbar a {
    color: #E0E0E0;
    text-decoration: none;
    margin: 0 15px;
    font-size: 16px;
    transition: color 0.3s;
}

.navbar a:hover {
    color: #AA00FF;
    transform: scale(1.1);
}

.logo {
    font-size: 20px;
    font-weight: bold;
}

/* 章节导航系统样式 */
.chapter-nav {
    position: fixed;
    top: 80px;
    left: 20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.chapter-nav a {
    display: block;
    color: #FFFFFF;
    text-decoration: none;
    margin: 10px 0;
    font-size: 16px;
    transition: color 0.3s;
}

.chapter-nav a:hover {
    color: #AA00FF;
}

/* 主内容区样式 */
.main-content {
    padding: 150px 50px 50px 300px;
    max-width: 1200px;
    margin: 0 auto;
}

.main-content h2, .main-content h3, .main-content h4 {
    color: #FFFFFF;
    margin-top: 40px;
}

.main-content p {
    font-size: 16px;
    line-height: 1.8;
    margin: 20px 0;
}

.main-content pre {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 10px;
    overflow-x: auto;
    font-size: 14px;
    margin: 20px 0;
}

.main-content code {
    color: #AA00FF;
    background: rgba(255, 255, 255, 0.2);
    padding: 2px 4px;
    border-radius: 4px;
}

/* 表格样式 */
.main-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 30px 0;
}

.main-content table, .main-content th, .main-content td {
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.main-content th, .main-content td {
    padding: 12px;
    text-align: left;
}

.main-content th {
    background: rgba(26, 35, 126, 0.5);
}

.main-content tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.05);
}

/* 图片样式 */
.image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
    margin: 40px 0;
}

.image-gallery img {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    transition: transform 0.3s, box-shadow 0.3s;
}

.image-gallery img:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0,0,0,0.5);
}

/* 按钮样式 */
.button {
    background-color: #6200EA;
    border: none;
    color: #FFFFFF;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 20px 0;
    border-radius: 8px;
    transition: background-color 0.3s, transform 0.3s;
    cursor: pointer;
}

.button:hover {
    background-color: #AA00FF;
    transform: scale(1.05);
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.visible {
    animation: fadeInUp 0.6s forwards;
}

/* 表单样式隐藏 */
form {
    display: none;
}

/* 智能投顾仪表盘样式 */
.dashboard {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin: 40px 0;
}

.dashboard .card {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 15px;
    flex: 1 1 300px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    transition: transform 0.3s, background 0.3s;
}

.dashboard .card:hover {
    transform: scale(1.05);
    background: rgba(255, 255, 255, 0.2);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .main-content {
        padding: 150px 30px 30px 200px;
    }
}

@media (max-width: 768px) {
    .navbar, .chapter-nav {
        padding: 15px 20px;
    }
    .chap_nav a {
        font-size: 14px;
    }
    .main-content {
        padding: 150px 20px 20px 20px;
    }
}

@media (max-width: 480px) {
    .navbar {
        flex-direction: column;
        align-items: flex-start;
    }
    .chapter-nav {
        display: none;
    }
    .main-content {
        padding: 150px 10px 10px 10px;
    }
}