:root {
    --net-bg: #0f172a;
    --net-text: #8892b0;
    --net-primary: #64ffda;
    --net-secondary: #ff6b6b;
    --net-accent: #112240;
    --font-net: 'Inter', 'Segoe UI', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    background-color: var(--net-bg); color: var(--net-text);
    font-family: var(--font-net);
    line-height: 1.6;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }

/* Network Topology Background */
.topology-bg {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
    z-index: -1; opacity: 0.2; pointer-events: none;
    background-image: 
        radial-gradient(circle at 20% 30%, var(--net-primary) 2px, transparent 2px),
        radial-gradient(circle at 80% 40%, var(--net-primary) 2px, transparent 2px),
        radial-gradient(circle at 40% 80%, var(--net-primary) 2px, transparent 2px),
        radial-gradient(circle at 70% 90%, var(--net-primary) 2px, transparent 2px);
    background-size: 100% 100%;
}
.topology-bg::before {
    content: ''; position: absolute; top: 30%; left: 20%; width: 60%; height: 10%;
    border-top: 1px dashed var(--net-primary); transform: rotate(10deg);
}
.topology-bg::after {
    content: ''; position: absolute; top: 40%; left: 40%; width: 30%; height: 40%;
    border-left: 1px dashed var(--net-primary); transform: rotate(-20deg);
}

.net-container { max-width: 1200px; margin: 0 auto; padding: 20px;}

/* Header */
.net-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 20px 0; border-bottom: 1px solid rgba(100, 255, 218, 0.2);
    margin-bottom: 50px;
}
.net-brand {
    font-size: 24px; font-weight: bold; color: #ccd6f6;
    display: flex; align-items: center; gap: 10px;
}
.net-brand::before { content: ''; display: inline-block; width: 12px; height: 12px; background: var(--net-primary); border-radius: 50%; box-shadow: 0 0 10px var(--net-primary);}
.net-nav { display: flex; gap: 30px; }
.net-nav a {
    font-size: 14px; color: var(--net-text); text-transform: uppercase;
    letter-spacing: 1px; transition: color 0.3s;
}
.net-nav a:hover, .net-nav a.active { color: var(--net-primary); }

/* Hero */
.net-hero {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 80px; padding: 40px; background: rgba(17, 34, 64, 0.7);
    border-radius: 10px; border: 1px solid rgba(100, 255, 218, 0.1);
    backdrop-filter: blur(10px);
}
.hero-content { flex: 1; padding-right: 40px;}
.hero-content h1 {
    font-size: 42px; margin-bottom: 20px; color: #ccd6f6;
    line-height: 1.2;
}
.hero-content p { font-size: 16px; margin-bottom: 30px;}
.hero-visual {
    flex: 1; height: 250px; position: relative;
    display: flex; align-items: center; justify-content: center;
}
.node-center {
    width: 50px; height: 50px; background: var(--net-primary); border-radius: 50%;
    box-shadow: 0 0 20px var(--net-primary); position: relative; z-index: 2;
}
.node-orbit {
    position: absolute; width: 200px; height: 200px; border: 1px dashed rgba(100, 255, 218, 0.3);
    border-radius: 50%; animation: spin 20s linear infinite;
}
.node-satellite {
    position: absolute; top: -5px; left: 50%; width: 10px; height: 10px;
    background: var(--net-secondary); border-radius: 50%; transform: translateX(-50%);
    box-shadow: 0 0 10px var(--net-secondary);
}
@keyframes spin { 100% { transform: rotate(360deg); } }

.btn-net {
    display: inline-block; padding: 12px 30px; font-size: 14px; font-weight: bold;
    color: var(--net-bg); background: var(--net-primary); border-radius: 4px;
    transition: all 0.3s; text-transform: uppercase; letter-spacing: 1px; margin-right: 15px;
}
.btn-net:hover { background: #4cd3b6; box-shadow: 0 0 15px rgba(100, 255, 218, 0.4);}
.btn-net-alt {
    display: inline-block; padding: 12px 30px; font-size: 14px; font-weight: bold;
    color: var(--net-primary); background: transparent; border: 1px solid var(--net-primary);
    border-radius: 4px; transition: all 0.3s; text-transform: uppercase; letter-spacing: 1px;
}
.btn-net-alt:hover { background: rgba(100, 255, 218, 0.1); }

/* Stats */
.net-stats {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 80px;
}
.ns-item {
    background: rgba(17, 34, 64, 0.7); padding: 25px 20px; text-align: center;
    border-radius: 8px; border: 1px solid rgba(100, 255, 218, 0.1);
}
.ns-val { font-size: 32px; font-weight: bold; color: #ccd6f6; margin-bottom: 5px;}
.ns-lbl { font-size: 12px; color: var(--net-primary); text-transform: uppercase; letter-spacing: 1px;}

/* Grid */
.net-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; margin-bottom: 80px;}
.ng-card {
    background: rgba(17, 34, 64, 0.7); padding: 35px; border-radius: 8px;
    border: 1px solid rgba(100, 255, 218, 0.1); position: relative;
    transition: transform 0.3s;
}
.ng-card:hover { transform: translateY(-5px); border-color: rgba(100, 255, 218, 0.3);}
.ng-card h3 { font-size: 20px; margin-bottom: 15px; color: #ccd6f6; display: flex; align-items: center;}
.ng-card h3::before { content: ''; display: inline-block; width: 8px; height: 8px; background: var(--net-primary); margin-right: 10px; border-radius: 50%;}
.ng-card p { font-size: 14px; text-align: justify;}

/* Nodes */
.net-nodes { margin-bottom: 80px; background: rgba(17, 34, 64, 0.7); padding: 40px; border-radius: 8px; border: 1px solid rgba(100, 255, 218, 0.1);}
.net-nodes h2 { font-size: 24px; margin-bottom: 30px; color: #ccd6f6; text-transform: uppercase; letter-spacing: 1px;}
.node-map { display: flex; flex-wrap: wrap; gap: 15px;}
.n-net {
    padding: 10px 20px; background: rgba(10, 25, 47, 0.8); border: 1px solid rgba(100, 255, 218, 0.2);
    border-radius: 4px; font-size: 13px; color: #ccd6f6; display: flex; align-items: center; gap: 10px;
}
.n-net::before { content: ''; display: inline-block; width: 6px; height: 6px; background: var(--net-primary); border-radius: 50%;}
.n-net span { color: var(--net-text); font-size: 12px;}

/* FAQ */
.net-faq { margin-bottom: 80px;}
.net-faq h2 { font-size: 24px; margin-bottom: 30px; color: #ccd6f6; text-transform: uppercase; letter-spacing: 1px;}
.faq-item { margin-bottom: 20px; background: rgba(17, 34, 64, 0.7); padding: 25px; border-radius: 8px; border-left: 3px solid var(--net-primary);}
.fq-q { font-size: 16px; font-weight: bold; color: #ccd6f6; margin-bottom: 10px;}
.fq-a { font-size: 14px;}

footer { text-align: center; padding-top: 30px; border-top: 1px solid rgba(100, 255, 218, 0.1); font-size: 12px; letter-spacing: 1px; text-transform: uppercase;}

@media (max-width: 900px) {
    .net-hero { flex-direction: column; text-align: center; }
    .hero-content { padding-right: 0; margin-bottom: 40px;}
    .net-stats { grid-template-columns: repeat(2, 1fr); }
    .net-grid { grid-template-columns: 1fr; }
    .btn-net, .btn-net-alt { display: block; margin: 10px auto; width: 80%;}
}