:root {
    --primary: #4f46e5;
    --primary-light: #818cf8;
    --accent: #06b6d4;
    --bg: #f8faff;
    --text: #1e293b;
    --text-muted: #64748b;
    --surface: #ffffff;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --border: #e2e8f0;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

#dynamic-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.bg-circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: move 20s infinite alternate ease-in-out;
}

@keyframes move {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(100px, 50px) scale(1.2); }
}

header {
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    background: rgba(248, 250, 255, 0.8);
    backdrop-filter: blur(10px);
    z-index: 100;
    border-bottom: 1px solid var(--border);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--accent);
    font-size: 0.9rem;
    margin-left: 0.3rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

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

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

.btn-primary {
    background: var(--primary);
    color: white !important;
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(79, 70, 229, 0.3);
}

.hero {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
    padding: 8rem 2rem;
    gap: 4rem;
}

.hero-content h1 {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
}

.hero-btns {
    display: flex;
    gap: 1rem;
}

.btn-main {
    text-decoration: none;
    background: var(--primary);
    color: white;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: 0.3s;
}

.btn-sub {
    text-decoration: none;
    background: white;
    color: var(--text);
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1.1rem;
    border: 1px solid var(--border);
    transition: 0.3s;
}

.hero-visual {
    position: relative;
}

.floating-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 2rem;
    border-radius: 24px;
    box-shadow: var(--shadow);
    animation: float 6s infinite ease-in-out;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.card-header {
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: var(--primary);
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 2px;
}

.card-stats {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.stat {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.stat span {
    display: block;
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.nodes {
    padding: 6rem 2rem;
}

.node-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.node-item {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: 20px;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: 0.3s;
}

.node-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: var(--primary-light);
}

.node-flag {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.node-info h3 {
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
}

.node-info p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.node-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: #f1f5f9;
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.85rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-dot.online {
    background: #10b981;
    box-shadow: 0 0 8px #10b981;
}

.pricing {
    padding: 6rem 2rem;
    background: rgba(255, 255, 255, 0.5);
}

.price-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.price-card {
    background: var(--surface);
    padding: 3rem 2rem;
    border-radius: 24px;
    border: 1px solid var(--border);
    position: relative;
    transition: 0.3s;
}

.price-card.featured {
    border-color: var(--primary);
    box-shadow: 0 20px 40px -10px rgba(79, 70, 229, 0.15);
    transform: scale(1.05);
}

.price-card .badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: #f1f5f9;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
}

.price-card.featured .badge {
    background: var(--primary);
    color: white;
}

.price-card .price {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 2rem;
}

.price-card .price span {
    font-size: 1rem;
    color: var(--text-muted);
}

.features {
    list-style: none;
    margin-bottom: 2.5rem;
}

.features li {
    padding: 0.8rem 0;
    border-bottom: 1px solid #f1f5f9;
    color: var(--text-muted);
    display: flex;
    align-items: center;
}

.features li::before {
    content: "✓";
    margin-right: 0.8rem;
    color: #10b981;
    font-weight: 900;
}

.btn-price {
    display: block;
    text-align: center;
    text-decoration: none;
    background: #f1f5f9;
    color: var(--text);
    padding: 1rem;
    border-radius: 12px;
    font-weight: 700;
    transition: 0.3s;
}

.featured .btn-price {
    background: var(--primary);
    color: white;
}

.price-card:hover:not(.featured) {
    transform: translateY(-5px);
}

.seo-articles {
    padding: 6rem 2rem;
}

.article-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

.article-links a {
    text-decoration: none;
    color: var(--text-muted);
    background: white;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    border: 1px solid var(--border);
    transition: 0.3s;
    font-size: 0.9rem;
}

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

footer {
    background: white;
    padding: 4rem 0;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-info p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 4rem 1rem;
    }
    .hero-content h1 {
        font-size: 2.5rem;
    }
    .hero-btns {
        justify-content: center;
    }
    .nav-links {
        display: none;
    }
    .price-card.featured {
        transform: scale(1);
    }
}