:root {
            --primary: #00f3ff;
            --secondary: #6c63ff;
            --dark: #0a0e17;
            --darker: #05070f;
            --light: #f8f9fa;
            --gray: #2a2e3a;
            --success: #00d26a;
            --warning: #ffbd2e;
            --danger: #ff3860;
            --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }


        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background-color: var(--dark);
            color: var(--light);
            line-height: 1.6;
            overflow-x: hidden;
        }
    
    
    /* 导航栏样式 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0, 243, 255, 0.2);
            transition: var(--transition);
        }

        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }

        .logo {
            display: flex;
            align-items: center;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
            position: relative;
            overflow: hidden;
        }

        .logo::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(to right, var(--primary), var(--secondary));
            transform: translateX(-100%);
            transition: transform 0.5s ease;
        }

        .logo:hover::after {
            transform: translateX(0);
        }

        .logo i {
            margin-right: 10px;
            font-size: 2rem;
        }

        .nav-links {
            display: flex;
            list-style: none;
        }

        .nav-links li {
            margin-left: 30px;
            position: relative;
        }

        .nav-links a {
            color: var(--light);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
            position: relative;
            padding: 5px 0;
        }

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

        .nav_links_active {
            color: var(--primary) !important;
        }

        .nav_links_active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100% !important;
            height: 2px;
            background: var(--primary) !important;
            transition: width 0.3s;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width 0.3s;
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        /* 下拉菜单样式 */
        .dropdown {
            position: relative;
        }

        .dropdown-content {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            background: rgba(10, 14, 23, 0.95);
            min-width: 200px;
            border-radius: 5px;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
            z-index: 1001;
            border: 1px solid rgba(0, 243, 255, 0.2);
            overflow: hidden;
        }

        .dropdown-content a {
            display: block;
            padding: 12px 20px;
            color: var(--light);
            text-decoration: none;
            transition: var(--transition);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .dropdown-content a:hover {
            background: rgba(0, 243, 255, 0.1);
            color: var(--primary);
            padding-left: 25px;
        }

        .dropdown-content a:last-child {
            border-bottom: none;
        }

        .dropdown:hover .dropdown-content {
            display: block;
        }

.dropdown-arrow {
    display: inline-block;
    font-size: 0.8rem;
    transition: transform 0.3s ease;
    transform-origin: center;
    flex-shrink: 0; /* 防止箭头被压缩 */
}

.dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown.active .dropdown-arrow {
    transform: rotate(180deg);
}
        .hamburger {
            display: none;
            cursor: pointer;
            font-size: 1.5rem;
            color: var(--light);
            transition: var(--transition);
            z-index: 1002;
        }

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

    
    
    
    /* 页脚样式 */
        footer {
            background-color: rgba(10, 14, 23, 0.95);
            padding: 70px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 50px;
            margin-bottom: 50px;
        }

        .footer-column {
            flex: 1;
            min-width: 250px;
            margin-bottom: 30px;
        }

        .footer-column h3 {
            font-size: 1.3rem;
            margin-bottom: 20px;
            color: var(--primary);
            position: relative;
            display: inline-block;
        }

        .footer-column h3::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 40px;
            height: 2px;
            background: var(--primary);
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: color 0.3s;
            position: relative;
            padding-left: 15px;
        }

        .footer-links a::before {
            content: '›';
            position: absolute;
            left: 0;
            color: var(--primary);
            transition: transform 0.3s;
        }

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

        .footer-links a:hover::before {
            transform: translateX(5px);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.7);
        }



.lang-btn {
    background: none;
    border: 1px solid var(--primary);
    color: #ffffff;
    padding: 0px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;;
}

.lang-btn.active {
    background-color: var(--primary);
    color: white;
}

.lang-btn:hover {
    background-color: var(--secondary-color);
    color: white;
    border-color: var(--secondary-color);
}
/* 响应式设计 */
@media (max-width: 992px) {
    .language-switcher {
        margin-left: 0;
        margin-top: 20px;
    }
}