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

:root {
    --green: #00ff41;
    --green-dim: #00aa2a;
    --bg: #0a0a0a;
    --bg-mid: #111111;
    --border: #00ff4133;
    --font: 'Courier New', Courier, monospace;
}

body {
    background-color: var(--bg);
    color: var(--green);
    font-family: var(--font);
    min-height: 100vh;
}

.cyber-page {
    max-width: 860px;
    margin: 0 auto;
    padding: 40px 24px;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

/* Header */
.cyber-header {
    border-bottom: 1px solid var(--border);
    padding-bottom: 16px;
}

.cyber-home-link {
    color: var(--green-dim);
    text-decoration: none;
    font-size: 12px;
    letter-spacing: 2px;
}

.cyber-home-link:hover {
    color: var(--green);
}

.cyber-title {
    font-size: 48px;
    font-weight: normal;
    letter-spacing: 8px;
    text-transform: lowercase;
    margin-top: 8px;
    text-shadow: 0 0 20px var(--green);
}

/* Two-column layout */
.cyber-layout {
    display: flex;
    gap: 24px;
}

/* Main */
.cyber-main {
    flex: 1;
    min-height: 300px;
}

/* Nav */
.cyber-nav {
    width: 130px;
    flex-shrink: 0;
    border-left: 1px solid var(--border);
    padding-left: 16px;
}

.cyber-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.cyber-nav li {
    padding: 4px 0;
}

.cyber-nav a {
    color: var(--green-dim);
    text-decoration: none;
    font-size: 13px;
    letter-spacing: 1px;
}

.cyber-nav a::before {
    content: '> ';
}

.cyber-nav a:hover {
    color: var(--green);
    text-shadow: 0 0 8px var(--green);
}

/* Footer */
.cyber-footer {
    border-top: 1px solid var(--border);
    padding-top: 16px;
    font-size: 11px;
    color: var(--green-dim);
    letter-spacing: 2px;
}

/* Mobile */
@media (max-width: 600px) {
    .cyber-title {
        font-size: 32px;
    }
    .cyber-page {
        padding: 24px 16px;
    }
}