/* 全局样式 */
body {
    margin: 0;
    font-family: 'Open Sans', sans-serif;
    background: linear-gradient(to bottom, #0A2463, #3F0071);
    color: white;
    line-height: 1.6;
    overflow-x: hidden;
}
.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 20px;
    box-sizing: border-box;
}
h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: bold;
    margin-top: 20px;
    margin-bottom: 10px;
}
p {
    margin-bottom: 15px;
}
a {
    color: #FFD700;
    text-decoration: none;
    transition: color 0.3s ease;
}
a:hover {
    color: #FFA500;
}

/* 卡片式选项卡设计 */
.tab-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 30px;
}
.tab {
    display: inline-block;
    margin: 10px;
    padding: 15px 25px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: transform 0.3s ease, background 0.3s ease;
}
.tab:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.2);
}
.tab.active {
    background: rgba(255, 255, 255, 0.3);
    box-shadow: 0 6px 10px rgba(0, 0, 0, 0.2);
}
.content {
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: opacity 0.3s ease, max-height 0.3s ease;
    padding: 0 20px;
}
.content.active {
    opacity: 1;
    max-height: 1000px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .tab {
        width: 100%;
        text-align: center;
    }
    .content {
        margin-top: 20px;
    }
}

/* 装饰性图片与粒子效果 */
.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 30px;
}
.image-grid img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
.particle {
    width: 10px;
    height: 10px;
    background: #fff;
    border-radius: 50%;
    position: absolute;
    animation: move 3s infinite;
}
@keyframes move {
    0% { transform: translate(0, 0); }
    50% { transform: translate(100px, 100px); }
    100% { transform: translate(0, 0); }
}

/* 提示信息 */
.info-box {
    background: rgba(0, 0, 0, 0.5);
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
    text-align: center;
    font-size: 14px;
}