:root {
    --auto-bg: #f5f7fa;
    --auto-text: #343a40;
    --auto-primary: #007bff; /* Bright Blue */
    --auto-secondary: #ffffff;
    --auto-accent: #28a745; /* Success Green */
    --auto-border: #dee2e6;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    background-color: var(--auto-bg); color: var(--auto-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6; overflow-x: hidden;
}

.auto-container { max-width: 1100px; margin: 0 auto; padding: 0 20px;}

/* Header */
.auto-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 20px 0; margin-bottom: 40px; border-bottom: 1px solid var(--auto-border);
}
.auto-brand {
    font-size: 24px; font-weight: 700; color: var(--auto-primary);
    display: flex; align-items: center; gap: 8px;
}
.auto-brand::before {
    content: '⚙️'; font-size: 24px;
}
.auto-nav { display: flex; gap: 25px; }
.auto-nav a {
    font-size: 15px; font-weight: 500; color: #6c757d; text-decoration: none;
    transition: color 0.2s;
}
.auto-nav a:hover, .auto-nav a.active { color: var(--auto-primary); }

/* Hero */
.auto-hero {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 60px; padding: 50px; background: var(--auto-secondary);
    border-radius: 12px; box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.auto-hero-text { flex: 1; padding-right: 40px;}
.auto-hero h1 {
    font-size: 42px; color: #212529; margin-bottom: 20px; font-weight: 700; line-height: 1.2;
}
.auto-hero p { font-size: 18px; color: #495057; margin-bottom: 30px;}

.auto-hero-visual {
    flex: 1; height: 300px; position: relative; display: flex; align-items: center; justify-content: center;
}
.spinner {
    width: 150px; height: 150px; border: 10px solid var(--auto-border);
    border-top-color: var(--auto-primary); border-radius: 50%;
    animation: spin 1.5s linear infinite;
}
@keyframes spin { 100% { transform: rotate(360deg); } }
.spinner-text { position: absolute; font-weight: bold; color: var(--auto-primary); font-size: 18px;}

.btn-auto {
    display: inline-block; padding: 14px 30px; font-size: 16px; font-weight: 600;
    color: #fff; background: var(--auto-primary); border-radius: 6px;
    text-decoration: none; transition: background 0.2s;
}
.btn-auto:hover { background: #0056b3; }

/* Stats */
.auto-stats {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 60px;
}
.as-item {
    background: var(--auto-secondary); padding: 25px; border-radius: 8px;
    text-align: center; border: 1px solid var(--auto-border);
}
.as-val { font-size: 32px; font-weight: 700; color: var(--auto-primary); margin-bottom: 5px;}
.as-lbl { font-size: 14px; color: #6c757d;}

/* Features */
.auto-features { margin-bottom: 60px; }
.auto-features h2 { font-size: 28px; text-align: center; margin-bottom: 40px; color: #212529;}
.af-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.af-card {
    background: var(--auto-secondary); padding: 30px; border-radius: 8px;
    border: 1px solid var(--auto-border); display: flex; flex-direction: column;
}
.af-card h3 { font-size: 18px; color: #212529; margin-bottom: 15px; display: flex; align-items: center; gap: 10px;}
.af-card h3::before { content: '✓'; color: var(--auto-accent); }
.af-card p { font-size: 15px; color: #495057; flex-grow: 1;}

/* Nodes */
.auto-nodes { margin-bottom: 60px; }
.auto-nodes h2 { font-size: 28px; text-align: center; margin-bottom: 40px; color: #212529;}
.an-list { background: var(--auto-secondary); border-radius: 8px; border: 1px solid var(--auto-border); overflow: hidden;}
.an-item {
    padding: 15px 25px; display: flex; justify-content: space-between; align-items: center;
    border-bottom: 1px solid var(--auto-border);
}
.an-item:last-child { border-bottom: none; }
.an-status { color: var(--auto-accent); font-weight: 600; font-size: 14px;}

/* FAQ */
.auto-faq { margin-bottom: 80px; }
.auto-faq h2 { font-size: 28px; text-align: center; margin-bottom: 40px; color: #212529;}
.a-faq-item {
    background: var(--auto-secondary); padding: 25px; border-radius: 8px;
    margin-bottom: 15px; border: 1px solid var(--auto-border);
}
.a-fq { font-size: 16px; font-weight: 600; color: #212529; margin-bottom: 10px;}
.a-fa { font-size: 15px; color: #495057;}

footer {
    text-align: center; padding: 30px 0; color: #adb5bd; font-size: 14px;
}

@media (max-width: 900px) {
    .auto-hero { flex-direction: column; text-align: center; padding: 30px;}
    .auto-hero-text { padding-right: 0; margin-bottom: 30px;}
    .auto-hero-visual { height: 200px; }
    .af-grid { grid-template-columns: 1fr; }
    .auto-stats { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .auto-header { flex-direction: column; gap: 15px; }
}