.flex_center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.flex_row {
    display: flex;
    flex-direction: row;
    align-items: center;
}

.flex_column {
    display: flex;
    flex-direction: column;
}

.flex_rows {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
}

.flex_column_center {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.flex_row_center {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
}

/* 全局渐变背景 */
body {
    background: var(--bg-color);
    min-height: 100vh;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 20%, rgba(0, 242, 254, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(79, 172, 254, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* 导航栏科技风格 */
.top_nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 242, 254, 0.1);
    border-bottom: 1px solid rgba(0, 242, 254, 0.2);
}

.top_nav .title {
    font-size: 24px;
    font-weight: 600;
    color: var(--primary-color);
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-left: 40px;
    text-shadow: 0 0 10px rgba(0, 242, 254, 0.5);
}

.top_nav .nav_list {
    margin-right: 40px;
}

.top_nav .nav_list ul li {
    position: relative;
    margin: 0 20px;
}

.top_nav .nav_list ul li a {
    color: #ccc;
    font-size: 16px;
    padding: 8px 16px;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.top_nav .nav_list ul li a:hover {
    color: var(--primary-color);
    background: rgba(0, 242, 254, 0.1);
    text-shadow: 0 0 10px rgba(0, 242, 254, 0.5);
}

.top_nav .nav_list ul li.current a {
    color: #fff;
    background: var(--gradient);
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.3);
    text-shadow: 0 0 10px rgba(0, 242, 254, 0.5);
}

.top_nav .nav_list ul li.current a::after {
    display: none;
}

/* 内容区域梦幻风格 */
.page_content .box {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(31, 38, 135, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.page_content .box:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(31, 38, 135, 0.15);
}

.page_content .title {
    color: #ff9a9e;
    border-bottom: 2px solid rgba(255, 154, 158, 0.3);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* 页脚科技风格 */
.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid rgba(0, 242, 254, 0.1);
    padding: 15px 0;
    z-index: 100;
}

.footer .inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer p {
    color: #999;
    font-size: 14px;
    margin: 5px 0;
}

.footer a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: var(--primary-color);
}

.footer .beian2 {
    width: 16px;
    height: 16px;
    vertical-align: middle;
    margin-right: 5px;
}

/* 为了防止内容被固定底部遮挡，给页面内容添加底部内边距 */
.page_content {
    padding-bottom: 120px;
}

/* 添加科技动画效果 */
@keyframes glow {
    0% {
        box-shadow: 0 0 5px rgba(0, 242, 254, 0.2);
    }
    50% {
        box-shadow: 0 0 20px rgba(0, 242, 254, 0.4);
    }
    100% {
        box-shadow: 0 0 5px rgba(0, 242, 254, 0.2);
    }
}

.page_content .box {
    animation: glow 4s ease-in-out infinite;
}

/* 响应式调整 */
@media screen and (max-width: 768px) {
    .page_content .box {
        margin: 20px;
        animation: none;
    }
}