:root {
    --primary-telemetry: #00f2ff;
    --depth-black: #05070a;
    --node-border: #1a2b3c;
    --signal-text: #a0c0d0;
    --alert-red: #ff3e3e;
    --panel-bg: #0d141d;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
    background-color: var(--depth-black);
    color: var(--signal-text);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

.monitoring-hub {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    border-bottom: 1px solid var(--node-border);
    background: rgba(13, 20, 29, 0.9);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.hub-brand {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-telemetry);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.telemetry-strip ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

.telemetry-strip a {
    text-decoration: none;
    color: var(--signal-text);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s;
}

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

.nexus-hero {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    min-height: 80vh;
    align-items: center;
    padding: 0 5%;
    gap: 60px;
    background: radial-gradient(circle at 10% 20%, rgba(0, 242, 255, 0.05) 0%, transparent 50%);
}

.hero-telemetry h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    color: #fff;
    margin-bottom: 1.5rem;
}

.hero-telemetry p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    max-width: 600px;
}

.action-trigger {
    display: inline-block;
    padding: 18px 36px;
    background: var(--primary-telemetry);
    color: var(--depth-black);
    text-decoration: none;
    font-weight: 700;
    border-radius: 4px;
    box-shadow: 0 0 20px rgba(0, 242, 255, 0.3);
    transition: transform 0.3s, box-shadow 0.3s;
}

.action-trigger:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 242, 255, 0.5);
}

.hero-visual-node img {
    width: 100%;
    border-radius: 12px;
    border: 1px solid var(--node-border);
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}

.infrastructure-nexus {
    padding: 100px 5%;
}

.node-archive {
    margin-bottom: 80px;
}

.node-archive h2 {
    font-size: 2.5rem;
    color: #fff;
    margin-bottom: 2rem;
    border-left: 4px solid var(--primary-telemetry);
    padding-left: 20px;
}

.data-cell-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.data-cell {
    background: var(--panel-bg);
    padding: 40px;
    border: 1px solid var(--node-border);
    border-radius: 8px;
    transition: border-color 0.3s;
}

.data-cell:hover {
    border-color: var(--primary-telemetry);
}

.data-cell h3 {
    color: var(--primary-telemetry);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.faq-matrix {
    max-width: 900px;
    margin: 0 auto;
}

.faq-entry {
    margin-bottom: 20px;
    background: var(--panel-bg);
    border: 1px solid var(--node-border);
}

.faq-q {
    padding: 20px;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-a {
    padding: 0 20px 20px;
    display: none;
    color: #8899a6;
}

.enrollment-panel {
    background: linear-gradient(135deg, #0d141d 0%, #1a2b3c 100%);
    padding: 80px 5%;
    border-radius: 20px;
    margin: 100px 5%;
    text-align: center;
}

.enroll-form-hub {
    max-width: 600px;
    margin: 40px auto 0;
    text-align: left;
}

.enroll-form-hub label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--primary-telemetry);
}

.enroll-form-hub input, .enroll-form-hub textarea {
    width: 100%;
    padding: 12px;
    background: #05070a;
    border: 1px solid var(--node-border);
    color: #fff;
    margin-bottom: 20px;
    border-radius: 4px;
}

.enroll-form-hub button {
    width: 100%;
    padding: 15px;
    background: var(--primary-telemetry);
    border: none;
    font-weight: 700;
    cursor: pointer;
    border-radius: 4px;
}

.terminal-footer {
    padding: 60px 5%;
    background: #020305;
    border-top: 1px solid var(--node-border);
}

.cookie-telemetry {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #0d141d;
    padding: 15px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--primary-telemetry);
    z-index: 2000;
}

@media (max-width: 1024px) {
    .nexus-hero {
        grid-template-columns: 1fr;
        padding-top: 100px;
    }
    .hero-telemetry h1 { font-size: 2.5rem; }
}