:root {
    --cmd-bg: #000000;
    --cmd-text: #00ff00;
    --cmd-primary: #00cc00;
    --cmd-secondary: #ff0000;
    --cmd-accent: #008800;
    --font-cmd: 'Consolas', 'Courier New', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    background-color: var(--cmd-bg); color: var(--cmd-text);
    font-family: var(--font-cmd);
    line-height: 1.4;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }

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

/* Header */
.cmd-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 10px 0; border-bottom: 1px solid var(--cmd-accent);
    margin-bottom: 30px;
}
.cmd-brand {
    font-size: 24px; font-weight: bold; color: var(--cmd-primary);
}
.cmd-brand::before { content: 'root@kuamiao:~# '; color: var(--cmd-accent); font-weight: normal; font-size: 16px;}
.cmd-nav { display: flex; gap: 20px; }
.cmd-nav a {
    font-size: 14px; color: var(--cmd-accent);
}
.cmd-nav a:hover, .cmd-nav a.active { color: var(--cmd-primary); text-decoration: underline; }
.cmd-nav a::before { content: './'; }

/* Hero */
.cmd-hero { margin-bottom: 40px; }
.cmd-output {
    border: 1px solid var(--cmd-accent); padding: 20px;
    background: rgba(0,255,0,0.05); position: relative;
}
.cmd-output::before {
    content: 'Terminal - bash - 80x24'; position: absolute; top: -10px; left: 10px;
    background: var(--cmd-bg); padding: 0 5px; font-size: 12px; color: var(--cmd-accent);
}
.cmd-hero h1 { font-size: 28px; margin-bottom: 15px; color: var(--cmd-primary); }
.cmd-hero p { font-size: 16px; margin-bottom: 20px; }
.cmd-prompt { color: var(--cmd-accent); margin-bottom: 10px;}
.btn-cmd {
    display: inline-block; padding: 5px 15px; font-size: 16px;
    color: var(--cmd-bg); background: var(--cmd-primary); border: 1px solid var(--cmd-primary);
    margin-right: 15px; cursor: pointer; font-family: var(--font-cmd);
}
.btn-cmd:hover { background: var(--cmd-text); }
.btn-cmd-alt {
    display: inline-block; padding: 5px 15px; font-size: 16px;
    color: var(--cmd-primary); background: transparent; border: 1px solid var(--cmd-primary);
    cursor: pointer; font-family: var(--font-cmd);
}
.btn-cmd-alt:hover { background: rgba(0,255,0,0.1); }

/* Stats */
.cmd-stats {
    display: flex; justify-content: space-between; margin-bottom: 40px;
    border: 1px dashed var(--cmd-accent); padding: 15px;
}
.cs-item { text-align: left; flex: 1; }
.cs-val { font-size: 24px; font-weight: bold; color: var(--cmd-primary); }
.cs-lbl { font-size: 12px; color: var(--cmd-accent); }

/* Grid */
.cmd-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-bottom: 40px;}
.cg-card {
    padding: 20px; border: 1px solid var(--cmd-accent);
}
.cg-card h3 { font-size: 18px; margin-bottom: 10px; color: var(--cmd-primary); display: flex; align-items: center;}
.cg-card h3::before { content: '>'; margin-right: 10px; color: var(--cmd-secondary);}
.cg-card p { font-size: 14px; }

/* Nodes */
.cmd-nodes { margin-bottom: 40px; border: 1px solid var(--cmd-accent); padding: 20px;}
.cmd-nodes h2 { font-size: 20px; margin-bottom: 15px; color: var(--cmd-primary); }
.cmd-nodes h2::before { content: '$ ping -c 5 global_nodes'; display: block; font-size: 14px; color: var(--cmd-accent); margin-bottom: 10px; font-weight: normal;}
.node-table { width: 100%; border-collapse: collapse; font-size: 14px;}
.node-table th, .node-table td { padding: 8px; text-align: left; border-bottom: 1px dashed var(--cmd-accent);}
.node-table th { color: var(--cmd-accent); font-weight: normal;}

/* FAQ */
.cmd-faq { margin-bottom: 40px;}
.cmd-faq h2 { font-size: 20px; margin-bottom: 20px; color: var(--cmd-primary);}
.cmd-faq h2::before { content: '$ cat faq.txt'; display: block; font-size: 14px; color: var(--cmd-accent); margin-bottom: 10px; font-weight: normal;}
.faq-item { margin-bottom: 15px; }
.fq-q { font-size: 16px; font-weight: bold; color: var(--cmd-primary); margin-bottom: 5px;}
.fq-q::before { content: 'Q: '; color: var(--cmd-secondary);}
.fq-a { font-size: 14px; padding-left: 25px;}
.fq-a::before { content: 'A: '; color: var(--cmd-accent); margin-left: -25px;}

footer { text-align: center; padding-top: 20px; border-top: 1px solid var(--cmd-accent); font-size: 12px; color: var(--cmd-accent);}
.cursor { display: inline-block; width: 10px; height: 1em; background: var(--cmd-primary); animation: blink 1s step-end infinite; vertical-align: middle;}
@keyframes blink { 50% { opacity: 0; } }

@media (max-width: 768px) {
    .cmd-header { flex-direction: column; align-items: flex-start; gap: 10px; }
    .cmd-stats { flex-direction: column; gap: 15px; }
    .cmd-grid { grid-template-columns: 1fr; }
    .btn-cmd, .btn-cmd-alt { display: block; margin: 10px 0; width: 100%; text-align: center;}
}