:root {
    --sec-bg: #0a0a0a;
    --sec-text: #e0e0e0;
    --sec-primary: #00d2ff; /* Neon Blue */
    --sec-secondary: #1a1a1a;
    --sec-accent: #ff007f; /* Neon Pink */
    --sec-border: #333333;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    background-color: var(--sec-bg); color: var(--sec-text);
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6; overflow-x: hidden;
}

/* Security Grid Background */
.sec-bg-effect {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: -1;
    background-image: 
        linear-gradient(rgba(0, 210, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 210, 255, 0.05) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: center center;
}
.sec-bg-effect::after {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(circle at center, transparent 0%, var(--sec-bg) 80%);
}

.sec-container { max-width: 1100px; margin: 0 auto; padding: 0 30px;}

/* Header */
.sec-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 30px 0; margin-bottom: 60px;
}
.sec-brand {
    font-size: 26px; font-weight: 900; color: var(--sec-text);
    letter-spacing: 1px; display: flex; align-items: center; gap: 10px;
}
.sec-brand::before {
    content: ''; display: inline-block; width: 12px; height: 12px;
    background: var(--sec-primary); box-shadow: 0 0 10px var(--sec-primary);
    border-radius: 2px;
}
.sec-nav { display: flex; gap: 30px; }
.sec-nav a {
    font-size: 15px; font-weight: 500; color: #888; text-decoration: none;
    text-transform: uppercase; letter-spacing: 1px; transition: color 0.3s;
}
.sec-nav a:hover, .sec-nav a.active { color: var(--sec-primary); text-shadow: 0 0 8px rgba(0, 210, 255, 0.5); }

/* Hero */
.sec-hero {
    display: flex; align-items: center; justify-content: space-between; gap: 60px;
    margin-bottom: 100px;
}
.sh-content { flex: 1; }
.sh-content h1 {
    font-size: 52px; font-weight: 900; color: var(--sec-text);
    line-height: 1.2; margin-bottom: 25px; letter-spacing: -1px;
}
.sh-content h1 span { color: var(--sec-primary); text-shadow: 0 0 20px rgba(0, 210, 255, 0.4); }
.sh-content p { font-size: 18px; color: #aaa; margin-bottom: 40px; max-width: 500px;}

.sh-visual {
    flex: 1; height: 400px; position: relative;
    display: flex; justify-content: center; align-items: center;
}
.sh-visual::before {
    content: ''; position: absolute; width: 250px; height: 250px;
    border: 2px solid var(--sec-primary); border-radius: 50%;
    animation: rotate 10s linear infinite; box-shadow: inset 0 0 20px rgba(0, 210, 255, 0.2);
}
.sh-visual::after {
    content: ''; position: absolute; width: 300px; height: 300px;
    border: 1px dashed var(--sec-accent); border-radius: 50%;
    animation: rotate 15s linear infinite reverse; opacity: 0.5;
}
@keyframes rotate { 100% { transform: rotate(360deg); } }

.btn-sec {
    display: inline-block; padding: 16px 35px; font-size: 15px; font-weight: bold;
    color: var(--sec-bg); background: var(--sec-primary); border: none;
    transition: all 0.3s; margin-right: 20px; text-decoration: none;
    text-transform: uppercase; letter-spacing: 1px; border-radius: 4px;
    box-shadow: 0 0 15px rgba(0, 210, 255, 0.4);
}
.btn-sec:hover { background: #fff; box-shadow: 0 0 25px rgba(255, 255, 255, 0.6); }
.btn-sec-alt {
    display: inline-block; padding: 16px 35px; font-size: 15px; font-weight: bold;
    color: var(--sec-primary); background: transparent; border: 1px solid var(--sec-primary);
    transition: all 0.3s; text-decoration: none; text-transform: uppercase; letter-spacing: 1px;
    border-radius: 4px;
}
.btn-sec-alt:hover { background: rgba(0, 210, 255, 0.1); }

/* Stats */
.sec-stats {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin-bottom: 100px;
}
.ss-item {
    background: var(--sec-secondary); padding: 30px; border: 1px solid var(--sec-border);
    border-radius: 8px; text-align: center; position: relative; overflow: hidden;
}
.ss-item::before {
    content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%;
    background: var(--sec-primary);
}
.ss-val { font-size: 36px; font-weight: 900; color: var(--sec-text); margin-bottom: 5px;}
.ss-lbl { font-size: 13px; color: #888; text-transform: uppercase; letter-spacing: 1px;}

/* Features */
.sec-features { margin-bottom: 100px;}
.sec-features h2 { font-size: 32px; font-weight: 900; margin-bottom: 50px; color: var(--sec-text); text-align: center;}
.sf-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px;}
.sf-card {
    background: var(--sec-secondary); padding: 40px; border: 1px solid var(--sec-border);
    border-radius: 8px; transition: transform 0.3s, border-color 0.3s;
}
.sf-card:hover { transform: translateY(-5px); border-color: var(--sec-primary); }
.sf-icon { font-size: 32px; color: var(--sec-primary); margin-bottom: 20px;}
.sf-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 15px; color: var(--sec-text);}
.sf-card p { font-size: 15px; color: #aaa;}

/* Nodes */
.sec-nodes { margin-bottom: 100px;}
.sec-nodes h2 { font-size: 32px; font-weight: 900; margin-bottom: 50px; color: var(--sec-text); text-align: center;}
.sn-list { display: flex; flex-direction: column; gap: 15px; max-width: 800px; margin: 0 auto;}
.sn-item {
    display: flex; justify-content: space-between; padding: 20px 30px;
    background: var(--sec-secondary); border: 1px solid var(--sec-border);
    border-radius: 8px; font-size: 15px; font-weight: 500;
}
.sn-status { color: var(--sec-primary); text-shadow: 0 0 5px rgba(0, 210, 255, 0.5);}

/* FAQ */
.sec-faq { margin-bottom: 120px;}
.sec-faq h2 { font-size: 32px; font-weight: 900; margin-bottom: 50px; color: var(--sec-text); text-align: center;}
.s-faq-item {
    margin-bottom: 25px; background: var(--sec-secondary); padding: 30px;
    border: 1px solid var(--sec-border); border-radius: 8px;
}
.s-fq { font-size: 18px; font-weight: 700; color: var(--sec-primary); margin-bottom: 15px;}
.s-fa { font-size: 15px; color: #aaa;}

footer {
    text-align: center; padding: 40px 0; color: #666; font-size: 13px;
    border-top: 1px solid var(--sec-border); text-transform: uppercase; letter-spacing: 2px;
}

@media (max-width: 900px) {
    .sec-hero { flex-direction: column; text-align: center; }
    .sh-content p { margin: 0 auto 40px; }
    .sh-visual { width: 100%; height: 300px; margin-top: 40px; }
    .sec-stats { grid-template-columns: 1fr; }
    .sf-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .sec-header { flex-direction: column; gap: 20px; }
    .sec-nav { flex-wrap: wrap; justify-content: center; gap: 15px;}
    .btn-sec, .btn-sec-alt { display: block; margin: 10px auto; width: 100%;}
}