:root {
    --primary-color: #00f2fe;
    --secondary-color: #4facfe;
    --accent-color: #00f2fe;
    --text-color: #ffffff;
    --dark-bg: #1a1a1a;
    --card-bg: rgba(255, 255, 255, 0.05);
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--dark-bg);
}

.navbar {
    background-color: transparent !important;
    padding: 1.5rem 0;
}

.navbar-brand {
    font-size: 1.8rem;
    font-weight: bold;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-link {
    color: var(--text-color) !important;
    font-size: 1.1rem;
    margin: 0 1rem;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
}

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

.hero-section {
    padding: 120px 0;
    /* background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%); */
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(0, 242, 254, 0.1) 0%, transparent 70%);
}

.hero-section h1 {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-section .lead {
    font-size: 1.4rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.8);
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border: none;
    padding: 1rem 2.5rem;
    font-weight: 600;
    font-size: 1.1rem;
    border-radius: 30px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 242, 254, 0.3);
}

.features-section {
    padding: 100px 0;
    background-color: var(--dark-bg);
    position: relative;
}

.feature-card {
    text-align: center;
    padding: 2.5rem;
    background: var(--card-bg);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 242, 254, 0.1);
}

.feature-card i {
    font-size: 3rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.feature-card p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.1rem;
}

.footer {
    background-color: rgba(0, 0, 0, 0.3);
    color: rgba(255, 255, 255, 0.7);
    padding: 2rem 0;
    backdrop-filter: blur(10px);
}

.footer a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

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

@media (max-width: 768px) {
    .hero-section {
        padding: 80px 0;
        text-align: center;
    }
    
    .hero-section h1 {
        font-size: 2.8rem;
    }
    
    .feature-card {
        margin-bottom: 2rem;
    }
}

.pricing-section {
    padding: 100px 0;
    background-color: var(--dark-bg);
    position: relative;
}

.pricing-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 242, 254, 0.1);
}

.pricing-card.featured {
    background: linear-gradient(45deg, rgba(0, 242, 254, 0.1), rgba(79, 172, 254, 0.1));
    border: 1px solid rgba(0, 242, 254, 0.3);
}

.pricing-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.pricing-card .price {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 2rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.pricing-card .price span {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.7);
}

.pricing-card ul {
    list-style: none;
    padding: 0;
    margin: 0 0 2rem 0;
}

.pricing-card ul li {
    color: rgba(255, 255, 255, 0.7);
    padding: 0.5rem 0;
    font-size: 1.1rem;
}

.pricing-card .btn {
    width: 100%;
}