:root {
            --bg-dark: #000000;
            --bg-primary: #0a0a0f;
            --bg-secondary: #111118;
            --bg-card: rgba(255, 255, 255, 0.03);
            --bg-glass: rgba(255, 255, 255, 0.05);
            --accent-blue: #3b82f6;
            --accent-purple: #8b5cf6;
            --accent-cyan: #06b6d4;
            --text-primary: #ffffff;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border: rgba(255, 255, 255, 0.1);
            --glow-blue: rgba(59, 130, 246, 0.4);
            --success: #22c55e;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            background: #000000;
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            color: #ffffff;
            min-height: 100vh;
            padding: 20px;
        }

        .bg-gradient {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            background:
                radial-gradient(ellipse 80% 50% at 50% -20%, rgba(59, 130, 246, 0.12), transparent),
                radial-gradient(ellipse 60% 40% at 90% 50%, rgba(139, 92, 246, 0.08), transparent),
                radial-gradient(ellipse 50% 30% at 10% 80%, rgba(6, 182, 212, 0.08), transparent),
                #000000;
        }

        .container {
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .header {
            text-align: center;
            color: var(--text-primary);
            margin-bottom: 50px;
        }

        .header h1 {
            font-size: 3em;
            margin-bottom: 15px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .header p {
            font-size: 1.3em;
            color: var(--text-secondary);
        }

        .glass-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 16px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .search-box {
            padding: 20px;
            margin-bottom: 30px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.35);
        }

        .search-box.glass-card {
            background: var(--bg-glass);
        }

        .search-input {
            width: 100%;
            padding: 15px 20px;
            font-size: 1.1em;
            border: 1px solid var(--border);
            border-radius: 12px;
            transition: all 0.3s;
            background: rgba(0,0,0,0.5);
            color: var(--text-primary);
        }

        .search-input::placeholder {
            color: var(--text-muted);
        }

        .search-input:focus {
            outline: none;
            border-color: var(--accent-blue);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
        }

        .category-filters {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 40px;
        }

        .filter-btn {
            background: var(--bg-card);
            color: var(--text-secondary);
            border: 1px solid var(--border);
            padding: 10px 25px;
            border-radius: 999px;
            font-size: 1em;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            backdrop-filter: blur(10px);
        }

        .filter-btn:hover {
            color: var(--text-primary);
            border-color: rgba(255,255,255,0.3);
            transform: translateY(-2px);
        }

        .filter-btn.active {
            background: linear-gradient(120deg, var(--accent-blue), var(--accent-purple));
            color: #ffffff;
            border-color: transparent;
            box-shadow: 0 10px 30px rgba(59, 130, 246, 0.2);
        }

        .faq-section {
            margin-bottom: 30px;
        }

        .section-title {
            padding: 15px 25px;
            font-size: 1.5em;
            font-weight: bold;
            margin-bottom: 20px;
            color: var(--text-primary);
            background: var(--bg-glass);
            border: 1px solid var(--border);
            border-radius: 16px;
            backdrop-filter: blur(10px);
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 16px;
            margin-bottom: 15px;
            overflow: hidden;
            transition: all 0.3s;
            backdrop-filter: blur(10px);
        }

        .faq-item:hover {
            border-color: rgba(255,255,255,0.2);
            box-shadow: 0 12px 30px rgba(0,0,0,0.35);
        }

        .faq-question {
            padding: 20px 25px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question h3 {
            color: var(--text-primary);
            font-size: 1.2em;
            flex: 1;
        }

        .faq-icon {
            font-size: 1.5em;
            color: var(--accent-blue);
            transition: transform 0.3s;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-answer-content {
            padding: 0 25px 25px 25px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 1000px;
        }

        .faq-answer-content p {
            margin-bottom: 15px;
        }

        .faq-answer-content ul {
            margin-left: 20px;
            margin-bottom: 15px;
        }

        .faq-answer-content li {
            margin-bottom: 8px;
        }

        .faq-answer-content strong {
            color: var(--text-primary);
        }

        .faq-answer-content a {
            color: var(--accent-blue);
        }

        .cta-section {
            padding: 40px;
            text-align: center;
            margin-top: 50px;
            background: var(--bg-glass);
            border: 1px solid var(--border);
            border-radius: 20px;
            backdrop-filter: blur(10px);
            box-shadow: 0 10px 40px rgba(0,0,0,0.35);
        }

        .cta-section h2 {
            color: var(--text-primary);
            font-size: 2em;
            margin-bottom: 15px;
        }

        .cta-section p {
            color: var(--text-secondary);
            font-size: 1.1em;
            margin-bottom: 25px;
        }

        .cta-button {
            background: linear-gradient(120deg, var(--accent-blue), var(--accent-purple));
            color: white;
            padding: 15px 40px;
            border: none;
            border-radius: 12px;
            font-size: 1.2em;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            text-decoration: none;
            display: inline-block;
        }

        .cta-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(59, 130, 246, 0.3);
        }

        .still-have-questions {
            text-align: center;
            color: var(--text-secondary);
            margin-top: 40px;
            font-size: 1.1em;
        }

        .still-have-questions a {
            color: var(--text-primary);
            text-decoration: underline;
        }

        .no-results {
            background: var(--bg-glass);
            padding: 40px;
            border-radius: 20px;
            text-align: center;
            color: var(--text-secondary);
            border: 1px solid var(--border);
            backdrop-filter: blur(10px);
        }

        .no-results h3 {
            color: var(--text-primary);
            margin-bottom: 15px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 24px 16px;
            }

            .header h1 {
                font-size: 2em;
            }

            .header p {
                font-size: 1rem;
            }

            .faq-question h3 {
                font-size: 1.05em;
            }

            .faq-question,
            .faq-answer {
                padding: 16px;
            }

            .category-filters {
                flex-direction: column;
            }

            .filter-btn {
                width: 100%;
            }
        }