:root {
    --bp-bg: #0a192f;
    --bp-text: #64ffda;
    --bp-primary: #64ffda;
    --bp-secondary: #ccd6f6;
    --bp-accent: #172a45;
    --bp-grid: rgba(100, 255, 218, 0.1);
    --font-bp: 'Courier New', Courier, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    background-color: var(--bp-bg); color: var(--bp-text);
    font-family: var(--font-bp);
    line-height: 1.6;
    background-image: 
        linear-gradient(var(--bp-grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--bp-grid) 1px, transparent 1px);
    background-size: 30px 30px;
    background-position: center center;
}
a { text-decoration: none; color: inherit; }

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

/* Header */
.bp-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 15px 30px; border: 2px solid var(--bp-primary);
    background: rgba(10, 25, 47, 0.9); margin-bottom: 40px;
    position: relative;
}
.bp-header::before, .bp-header::after {
    content: ''; position: absolute; width: 10px; height: 10px; border: 2px solid var(--bp-primary);
}
.bp-header::before { top: -6px; left: -6px; border-right: none; border-bottom: none; }
.bp-header::after { bottom: -6px; right: -6px; border-left: none; border-top: none; }

.bp-brand {
    font-size: 28px; font-weight: bold; letter-spacing: 2px;
}
.bp-nav { display: flex; gap: 30px; }
.bp-nav a {
    font-size: 16px; color: var(--bp-secondary); transition: color 0.3s;
    position: relative;
}
.bp-nav a:hover, .bp-nav a.active { color: var(--bp-primary); }
.bp-nav a.active::after {
    content: '_'; position: absolute; bottom: -5px; left: 50%; transform: translateX(-50%);
    animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* Hero */
.bp-hero {
    display: flex; align-items: center; gap: 50px; margin-bottom: 60px;
    border: 1px solid var(--bp-primary); padding: 40px; background: rgba(10, 25, 47, 0.8);
    position: relative;
}
.bp-hero::before {
    content: 'PROJECT: KUAMIAO_VPN_V1'; position: absolute; top: -12px; left: 20px;
    background: var(--bp-bg); padding: 0 10px; font-size: 14px; color: var(--bp-secondary);
}
.hero-content { flex: 1; }
.hero-content h1 {
    font-size: 42px; margin-bottom: 20px; color: var(--bp-secondary);
    text-transform: uppercase;
}
.hero-content p { font-size: 16px; margin-bottom: 30px; color: #8892b0;}
.hero-visual {
    flex: 1; height: 300px; border: 1px dashed var(--bp-primary);
    position: relative; display: flex; align-items: center; justify-content: center;
}
.hero-visual::before {
    content: ''; position: absolute; top: 10%; left: 10%; right: 10%; bottom: 10%;
    border: 1px solid rgba(100, 255, 218, 0.3); border-radius: 50%;
}
.hero-visual::after {
    content: ''; position: absolute; top: 20%; left: 20%; right: 20%; bottom: 20%;
    border: 1px solid rgba(100, 255, 218, 0.5); border-radius: 50%;
}
.btn-bp {
    display: inline-block; padding: 12px 30px; font-size: 16px; font-weight: bold;
    color: var(--bp-bg); background: var(--bp-primary); border: 1px solid var(--bp-primary);
    transition: all 0.3s; margin-right: 15px; text-transform: uppercase;
}
.btn-bp:hover { background: transparent; color: var(--bp-primary); }
.btn-bp-alt {
    display: inline-block; padding: 12px 30px; font-size: 16px; font-weight: bold;
    color: var(--bp-primary); background: transparent; border: 1px solid var(--bp-primary);
    transition: all 0.3s; text-transform: uppercase;
}
.btn-bp-alt:hover { background: rgba(100, 255, 218, 0.1); }

/* Stats */
.bp-stats {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 60px;
}
.bs-item {
    border: 1px solid var(--bp-primary); padding: 20px; text-align: center;
    background: rgba(10, 25, 47, 0.8); position: relative;
}
.bs-item::before {
    content: '+'; position: absolute; top: -10px; left: -5px; color: var(--bp-primary); background: var(--bp-bg);
}
.bs-val { font-size: 32px; font-weight: bold; color: var(--bp-secondary); margin-bottom: 5px;}
.bs-lbl { font-size: 12px; text-transform: uppercase; letter-spacing: 1px;}

/* Grid */
.bp-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; margin-bottom: 60px;}
.bg-card {
    border: 1px solid var(--bp-primary); padding: 30px; background: rgba(10, 25, 47, 0.8);
    position: relative;
}
.bg-card h3 { font-size: 20px; margin-bottom: 15px; color: var(--bp-secondary); text-transform: uppercase; display: flex; align-items: center;}
.bg-card h3::before { content: '>> '; color: var(--bp-primary); margin-right: 10px;}
.bg-card p { font-size: 15px; color: #8892b0; text-align: justify;}

/* Nodes */
.bp-nodes { margin-bottom: 60px; border: 1px solid var(--bp-primary); padding: 30px; background: rgba(10, 25, 47, 0.8);}
.bp-nodes h2 { font-size: 24px; margin-bottom: 20px; color: var(--bp-secondary); text-transform: uppercase;}
.node-blueprint { display: flex; flex-direction: column; gap: 10px;}
.n-bp {
    display: flex; justify-content: space-between; padding: 10px; border: 1px dashed rgba(100, 255, 218, 0.3);
    font-size: 14px; color: var(--bp-secondary);
}
.n-bp span { color: var(--bp-primary); font-weight: bold;}

/* FAQ */
.bp-faq { margin-bottom: 60px;}
.bp-faq h2 { font-size: 24px; margin-bottom: 30px; color: var(--bp-secondary); text-transform: uppercase;}
.faq-item { margin-bottom: 20px; border-left: 2px solid var(--bp-primary); padding-left: 20px;}
.fq-q { font-size: 16px; font-weight: bold; color: var(--bp-secondary); margin-bottom: 5px;}
.fq-a { font-size: 14px; color: #8892b0;}

footer { text-align: center; padding-top: 20px; border-top: 1px dashed var(--bp-primary); font-size: 12px; color: #8892b0; text-transform: uppercase;}

@media (max-width: 900px) {
    .bp-hero { flex-direction: column; }
    .hero-visual { width: 100%; }
    .bp-stats { grid-template-columns: repeat(2, 1fr); }
    .bp-grid { grid-template-columns: 1fr; }
    .btn-bp, .btn-bp-alt { display: block; margin: 10px 0; width: 100%; text-align: center;}
}