:root {
    --bg-dark: #070B19;
    --primary-blue: #0066FF;
    --cyan: #00E5FF;
    --text-main: #FFFFFF;
    --text-muted: #8E9EBB;
    --glass-bg: rgba(14, 23, 44, 0.4);
    --glass-border: rgba(255, 255, 255, 0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Background Animation */
.background-anim {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    background: radial-gradient(circle at 15% 50%, rgba(0, 102, 255, 0.15), transparent 25%),
                radial-gradient(circle at 85% 30%, rgba(0, 229, 255, 0.15), transparent 25%);
    filter: blur(80px);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    background: rgba(7, 11, 25, 0.8);
    backdrop-filter: blur(12px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--glass-border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: 1px;
}

nav {
    display: flex;
    gap: 30px;
    align-items: center;
}

nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

nav a:hover {
    color: var(--cyan);
}

.btn-nav {
    background: linear-gradient(135deg, var(--primary-blue), var(--cyan));
    padding: 8px 24px;
    border-radius: 20px;
    color: white !important;
    font-weight: 600;
}

.btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 229, 255, 0.4);
}

.section {
    padding: 100px 5%;
}

.hero-section {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 5%;
    margin-top: 30px;
}

.hero-content {
    max-width: 800px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 20px;
    background: linear-gradient(to right, #fff, var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--cyan));
    color: white;
    padding: 15px 40px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 800;
    font-size: 1.1rem;
    box-shadow: 0 10px 30px rgba(0, 102, 255, 0.3);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 229, 255, 0.4);
}

.btn-secondary {
    background: var(--glass-bg);
    color: white;
    padding: 15px 40px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.section-title p {
    color: var(--text-muted);
}

/* Nodes Grid */
.node-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.node-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 25px;
    border-radius: 16px;
    width: 200px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, border-color 0.3s ease;
}
.node-card:hover {
    transform: translateY(-5px);
    border-color: var(--cyan);
}

.flag {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.node-name {
    font-weight: 600;
    margin-bottom: 10px;
}

.ping {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--cyan);
}

.status-dot {
    height: 10px;
    width: 10px;
    background-color: #00E676;
    border-radius: 50%;
    display: inline-block;
    margin-right: 5px;
    box-shadow: 0 0 10px #00E676;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(0, 230, 118, 0.4); }
    70% { transform: scale(1.2); box-shadow: 0 0 0 10px rgba(0, 230, 118, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(0, 230, 118, 0); }
}

/* Pricing Grid */
.pricing-grid {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.pricing-card {
    background: linear-gradient(180deg, rgba(20, 30, 50, 0.8), rgba(10, 15, 30, 0.4));
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 40px;
    width: 340px;
    backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    position: relative;
    transition: transform 0.4s ease;
}

.popular {
    transform: scale(1.05);
    border: 1px solid var(--primary-blue);
    background: linear-gradient(180deg, rgba(0, 102, 255, 0.1), rgba(10, 15, 30, 0.4));
}

.popular:hover {
    transform: scale(1.08);
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary-blue), var(--cyan));
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 800;
}

.card-header h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--cyan);
}

.price {
    margin-bottom: 15px;
}

.currency {
    font-size: 1.5rem;
    vertical-align: super;
}

.amount {
    font-size: 3.5rem;
    font-weight: 800;
}

.duration {
    color: var(--text-muted);
}

.price-options {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--glass-border);
    font-size: 0.9rem;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.price-options p span {
    display: inline-block;
    width: 60px;
    color: #fff;
    opacity: 0.8;
}

.features {
    list-style: none;
    margin-bottom: 40px;
    flex-grow: 1;
}

.features li {
    margin-bottom: 15px;
    font-size: 0.95rem;
    color: #cbd5e1;
}

.features li strong {
    color: white;
}

.btn-buy {
    background: var(--glass-bg);
    border: 1px solid var(--cyan);
    color: var(--cyan);
    padding: 15px;
    text-align: center;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-buy:hover {
    background: var(--cyan);
    color: var(--bg-dark);
}

.popular .btn-buy {
    background: linear-gradient(135deg, var(--primary-blue), var(--cyan));
    color: white;
    border: none;
}
.popular .btn-buy:hover {
    box-shadow: 0 10px 20px rgba(0, 229, 255, 0.4);
}

/* Article Links Container */
.article-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
}
.article-links a {
    display: block;
    padding: 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--text-main);
    text-decoration: none;
    transition: all 0.3s ease;
}
.article-links a:hover {
    background: rgba(0, 102, 255, 0.1);
    border-color: var(--primary-blue);
    transform: translateX(5px);
}

footer {
    border-top: 1px solid var(--glass-border);
    padding: 40px 5% 20px;
    background: #040710;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}
.footer-content h3 {
    font-size: 1.5rem;
    color: var(--cyan);
}
.footer-bottom {
    margin-top: 20px;
    text-align: center;
    color: var(--text-muted);
}

@media(max-width: 768px) {
    .hero-section {
        flex-direction: column;
        justify-content: center;
        text-align: center;
        padding: 0 5%;
        margin-top: 80px;
        height: auto;
        padding-bottom: 50px;
    }
    h1 {
        font-size: 2.5rem;
    }
    .hero-cta {
        flex-direction: column;
    }
    nav {
        display: none;
    }
}