:root {
        --primary-color: #66c6f2;
        --secondary-color: #06838b;
        --dark-color: #0a192f;
        --light-color: #f8f9fa;
        --accent-color: #973af4;
    }
        
body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: #f5f7fa;
    color: #333;
    overflow-x: hidden;
}

.navbar {
    background: linear-gradient(135deg, var(--dark-color), #162a47);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.8rem;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-section {
    background: linear-gradient(135deg, var(--dark-color), #162a47);
    color: white;
    padding: 5rem 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiPjxkZWZzPjxwYXR0ZXJuIGlkPSJwYXR0ZXJuIiB3aWR0aD0iNDAiIGhlaWdodD0iNDAiIHBhdHRlcm5Vbml0cz0idXNlclNwYWNlT25Vc2UiIHBhdHRlcm5UcmFuc2Zvcm09InJvdGF0ZSg0NSkiPjxyZWN0IHdpZHRoPSIyMCIgaGVpZ2h0PSIyMCIgZmlsbD0icmdiYSgyNTUsMjU1LDI1NSwwLjAzKSIvPjwvcGF0dGVybj48L2RlZnM+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0idXJsKCNwYXR0ZXJuKSIvPjwvc3ZnPg==');
    opacity: 0.6;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, white, #d1d5db);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    max-width: 600px;
}

.btn-gradient {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border: none;
    color: white;
    font-weight: 600;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(58, 134, 255, 0.4);
    transition: all 0.3s ease;
    z-index: 9999;
}

.btn-gradient:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(58, 134, 255, 0.5);
    color: white;
}

.feature-card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    height: 100%;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.ip-switch-section {
    background: linear-gradient(135deg, #1a2a4f, #0a192f);
    color: white;
    padding: 4rem 0;
    border-radius: 12px;
    position: relative;
    overflow: hidden;
}

.ip-switch-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiPjxkZWZzPjxwYXR0ZXJuIGlkPSJwYXR0ZXJuIiB3aWR0aD0iNDAiIGhlaWdodD0iNDAiIHBhdHRlcm5Vbml0cz0idXNlclNwYWNlT25Vc2UiIHBhdHRlcm5UcmFuc2Zvcm09InJvdGF0ZSg0NSkiPjxyZWN0IHdpZHRoPSIyMCIgaGVpZ2h0PSIyMCIgZmlsbD0icmdiYSgyNTUsMjU1LDI1NSwwLjAzKSIvPjwvcGF0dGVybj48L2RlZnM+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0idXJsKCNwYXR0ZXJuKSIvPjwvc3ZnPg==');
    opacity: 0.4;
}

.ip-display {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1.5rem;
    font-family: 'Courier New', monospace;
    font-size: 1.2rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.ip-location {
    display: flex;
    align-items: center;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    opacity: 0.8;
}

.ip-location i {
    margin-right: 0.5rem;
}

.btn-ip-switch {
    background: linear-gradient(45deg, #00b4d8, #0096c7);
    border: none;
    color: white;
    font-weight: 600;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(0, 180, 216, 0.4);
    transition: all 0.3s ease;
}

.btn-ip-switch:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 180, 216, 0.5);
    color: white;
}

.pricing-card {
    background: white;
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.pricing-card.popular {
    border: 2px solid var(--primary-color);
}

.pricing-card.popular::before {
    content: '推荐';
    position: absolute;
    top: 15px;
    right: -30px;
    background: var(--primary-color);
    color: white;
    padding: 0.2rem 2rem;
    transform: rotate(45deg);
    font-size: 0.8rem;
    font-weight: 600;
}

.pricing-price {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 1.5rem 0;
}

.pricing-period {
    font-size: 1rem;
    opacity: 0.7;
}

.pricing-feature {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
}

.pricing-feature i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.testimonial-card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    height: 100%;
}

.testimonial-text {
    font-style: italic;
    margin-bottom: 1.5rem;
    position: relative;
}

.testimonial-text::before {
    content: '"';
    font-size: 4rem;
    position: absolute;
    top: -1.5rem;
    left: -1rem;
    opacity: 0.1;
    font-family: serif;
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.testimonial-author img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin-right: 1rem;
    object-fit: cover;
}

.author-info h5 {
    margin-bottom: 0.2rem;
}

.author-info p {
    font-size: 0.8rem;
    opacity: 0.7;
    margin-bottom: 0;
}

.footer {
    /* background: linear-gradient(45deg,  60%,var(--dark-color)); */
    background: rgba(15, 15, 15, .96);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-links h5 {
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.footer-links ul {
    list-style: none;
    padding-left: 0;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: white;
    padding-left: 5px;
}

.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    margin-right: 0.8rem;
    color: white;
    transition: all 0.3s ease;
}

.social-icons a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.copyright {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    margin-top: 2rem;
    font-size: 0.9rem;
    opacity: 0.7;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .feature-card {
        margin-bottom: 1.5rem;
    }
    
    .pricing-card {
        margin-bottom: 2rem;
    }
}

/* 动画效果 */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.floating {
    animation: float 3s ease-in-out infinite;
}