* { margin: 0; padding: 0; box-sizing: border-box; }
body { 
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; 
    line-height: 1.6; color: #1a1a1a; max-width: 1200px; margin: 0 auto; padding: 0 20px;
    background: #0a0a0a; color: #e0e0e0;
}

header { 
    background: linear-gradient(135deg, #0a0a0a 0%, #0a0a0a 100%); 
    padding: 1.5rem 0; margin-bottom: 2rem;
    display: flex; justify-content: space-between; align-items: center;
    border-radius: 0 0 8px 8px;
}
.logo { font-size: 1.5rem; font-weight: bold; color: #fff; text-decoration: none; }
nav a { margin-left: 2rem; text-decoration: none; color: #fff; font-weight: 500; }
nav a:hover { color: #00ff88; }

.hero { 
    text-align: center; padding: 4rem 0; margin-bottom: 3rem;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    border-radius: 8px; color: white;
    border: 1px solid #333;
}
.hero h1 { font-size: 2.8rem; margin-bottom: 1rem; background: linear-gradient(135deg, #00ff88 0%, #667eea 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-subtitle { font-size: 1.3rem; opacity: 0.9; }

.main-content { margin-bottom: 3rem; }
.main-content h2 { 
    margin: 2.5rem 0 1.5rem; color: #00ff88;
    padding-bottom: 0.5rem; border-bottom: 2px solid #667eea;
}
.main-content p { margin-bottom: 1.2rem; color: #ccc; }
.main-content ul { margin: 1.5rem 0 1.5rem 2rem; }
.main-content li { margin-bottom: 0.8rem; color: #ccc; }

.features-grid { 
    display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
    gap: 1.5rem; margin: 2rem 0;
}
.feature-card { 
    background: #1a1a1a; padding: 1.5rem; border-radius: 8px; 
    border-left: 4px solid #667eea; border-top: 1px solid #333;
}
.feature-card h3 { color: #00ff88; margin-bottom: 0.5rem; }

.tech-table { 
    width: 100%; border-collapse: collapse; margin: 1.5rem 0;
    background: #1a1a1a; border-radius: 8px; overflow: hidden; border: 1px solid #333;
}
.tech-table th, .tech-table td { 
    padding: 12px; text-align: left; border-bottom: 1px solid #333;
}
.tech-table th { background: #667eea; color: white; }
.tech-table tr:hover { background: #2a2a2a; }

.faq-item { 
    margin-bottom: 2rem; padding: 2rem; 
    background: #1a1a1a; border-radius: 8px; border: 1px solid #333;
    border-left: 4px solid #00ff88;
}
.faq-question { 
    font-weight: bold; margin-bottom: 1rem; color: #00ff88;
    font-size: 1.2rem;
}

.error-page { 
    text-align: center; padding: 4rem 0; 
    background: #1a1a1a; border-radius: 8px; border: 1px solid #333;
}
.error-code { 
    font-size: 6rem; color: #667eea; font-weight: bold; 
    margin-bottom: 1rem;
}
.error-message { font-size: 1.5rem; color: #00ff88; margin-bottom: 2rem; }

.breadcrumbs { 
    margin-bottom: 2rem; padding: 1rem 0; 
    font-size: 0.9rem; color: #999;
}
.breadcrumbs a { color: #00ff88; text-decoration: none; }
.breadcrumbs a:hover { color: #667eea; }

footer { 
    background: #1a1a1a; color: #fff; padding: 3rem 0; margin-top: 4rem;
    text-align: center; border-radius: 8px 8px 0 0; border-top: 1px solid #333;
}
.footer-links { margin: 1.5rem 0; }
.footer-links a { color: #00ff88; margin: 0 1.5rem; text-decoration: none; }
.footer-links a:hover { color: #667eea; }

@media (max-width: 768px) {
    header { flex-direction: column; text-align: center; }
    nav { margin-top: 1rem; }
    nav a { margin: 0 1rem; }
    .hero h1 { font-size: 2.2rem; }
    .features-grid { grid-template-columns: 1fr; }
    .error-code { font-size: 4rem; }
}