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

        :root {
            --primary: #F7931E;
            --primary-dark: #E8820D;
            --secondary: #FFB800;
            --dark-bg: #0B0E16;
            --darker-bg: #060812;
            --card-bg: #161B28;
            --input-bg: #1E2330;
            --border: rgba(247, 147, 30, 0.2);
            --text-primary: #FFFFFF;
            --text-secondary: #B8BCC8;
            --text-muted: #6B7280;
            --glass-bg: rgba(22, 27, 40, 0.85);
            --glass-border: rgba(255, 255, 255, 0.1);
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            background: var(--dark-bg);
            color: var(--text-primary);
            line-height: 1.7;
        }

        /* Header */
        header {
            background: var(--darker-bg);
            border-bottom: 1px solid var(--border);
            padding: 1.25rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-content {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            background: linear-gradient(135deg, #F7931E 0%, #FFB800 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-decoration: none;
        }

        /* Breadcrumb */
        .breadcrumb {
            background: var(--darker-bg);
            padding: 1rem 0;
            border-bottom: 1px solid var(--border);
        }

        .breadcrumb-content {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }

        .breadcrumb a:hover {
            text-decoration: underline;
        }

        /* Hero */
        .hero {
            position: relative;
            height: 450px;
            overflow: hidden;
        }

        .hero-image {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hero-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(11, 14, 22, 0.95), transparent);
            padding: 3rem 1.5rem 2rem;
        }

        .hero-content {
            max-width: 1400px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 0.75rem;
        }

        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
        }

        /* Main Container */
        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 3rem 1.5rem;
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 3rem;
            align-items: start;
        }

        /* TOC */
        .toc-wrapper {
            position: sticky;
            top: 100px;
        }

        .toc {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 1.5rem;
        }

        .toc h2 {
            color: var(--primary);
            font-size: 1.1rem;
            margin-bottom: 1.25rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--border);
        }

        .toc ul {
            list-style: none;
        }

        .toc li {
            margin-bottom: 0.5rem;
        }

        .toc a {
            color: var(--text-secondary);
            text-decoration: none;
            display: block;
            padding: 0.5rem 0.75rem;
            border-radius: 6px;
            font-size: 0.9rem;
            transition: all 0.2s;
        }

        .toc a:hover {
            color: var(--primary);
            background: rgba(247, 147, 30, 0.1);
            padding-left: 1rem;
        }

        /* Content */
        .content {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 2.5rem;
        }

        .introduction {
            background: linear-gradient(135deg, rgba(247, 147, 30, 0.1), transparent);
            border-left: 3px solid var(--primary);
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 3rem;
        }

        .introduction h2 {
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }

        .featured-image {
            width: 100%;
            height: auto;
            max-height: 500px;
            object-fit: cover;
            border-radius: 12px;
            margin: 2rem 0;
        }

        h2 {
            color: var(--primary);
            font-size: 1.75rem;
            margin: 2.5rem 0 1.25rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--border);
        }

        h3 {
            color: var(--secondary);
            font-size: 1.35rem;
            margin: 2rem 0 1rem;
        }

        h4 {
            color: var(--text-secondary);
            font-size: 1.1rem;
            margin: 1.5rem 0 0.75rem;
        }

        p {
            margin-bottom: 1.25rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        strong {
            color: var(--text-primary);
        }

        blockquote {
            background: var(--input-bg);
            border-left: 3px solid var(--primary);
            padding: 1.25rem;
            margin: 1.5rem 0;
            border-radius: 8px;
        }

        blockquote p {
            color: var(--text-secondary);
            font-style: italic;
            margin-bottom: 0.5rem;
        }

        blockquote em {
            color: var(--text-secondary);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            border-bottom: 1px solid transparent;
            transition: border-color 0.2s;
        }

        a:hover {
            border-bottom-color: var(--primary);
        }

        .section-divider {
            height: 1px;
            background: var(--border);
            margin: 3rem 0;
        }

        /* Resources */
        .resources {
            background: linear-gradient(135deg, rgba(247, 147, 30, 0.08), transparent);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 2rem;
            margin: 3rem 0;
        }

        .resources h3 {
            color: var(--primary);
            margin-top: 0;
        }

        .resources ul {
            list-style: none;
            padding: 0;
        }

        .resources li {
            margin-bottom: 0.75rem;
            padding-left: 1.5rem;
            position: relative;
        }

        .resources li::before {
            content: '→';
            position: absolute;
            left: 0;
            color: var(--primary);
        }

        /* Back to Top */
        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 48px;
            height: 48px;
            background: var(--primary);
            border: none;
            border-radius: 50%;
            cursor: pointer;
            display: none;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: white;
            transition: transform 0.2s;
            z-index: 50;
        }

        .back-to-top.visible {
            display: flex;
        }

        .back-to-top:hover {
            transform: scale(1.1);
        }

        /* Mobile */
        @media (max-width: 968px) {
            .container {
                grid-template-columns: 1fr;
                padding: 2rem 1rem;
                gap: 2rem;
            }

            .toc-wrapper {
                position: relative;
                top: 0;
            }

            .hero {
                height: 350px;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .content {
                padding: 1.5rem;
            }

            h2 {
                font-size: 1.5rem;
            }

            h3 {
                font-size: 1.2rem;
            }
        }

        @media (max-width: 640px) {
            .header-content,
            .breadcrumb-content,
            .hero-overlay {
                padding-left: 1rem;
                padding-right: 1rem;
            }

            .hero {
                height: 300px;
            }

            .hero h1 {
                font-size: 1.75rem;
            }

            .container {
                padding: 1.5rem 0.75rem;
            }

            .content {
                padding: 1.25rem;
            }

            .back-to-top {
                bottom: 1rem;
                right: 1rem;
                width: 44px;
                height: 44px;
            }
        }

        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 10px;
        }

        ::-webkit-scrollbar-track {
            background: var(--darker-bg);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 5px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary);
        }
        
        

.faq-section {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 3rem;
    margin: 3rem 0;
}

.faq-section h2 {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
    text-align: center;
    font-weight: 800;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border);
}

.faq-intro {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

.faq-item {
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1.5rem;
    background: var(--input-bg);
    border-radius: 8px;
    overflow: hidden;
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    background: transparent;
    border: none;
    width: 100%;
    text-align: left;
    padding: 1.25rem;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
    border-radius: 8px;
}

.faq-question:hover {
    background: rgba(247, 147, 30, 0.1);
}

.faq-question::after {
    content: '+';
    font-size: 1.75rem;
    font-weight: bold;
    color: var(--secondary);
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: 1rem;
}

.faq-question.active {
    background: rgba(247, 147, 30, 0.15);
}

.faq-question.active::after {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 1.25rem;
    background: var(--darker-bg);
}

.faq-answer.active {
    max-height: 2000px;
    padding: 1.5rem 1.25rem;
}

.faq-answer p {
    margin-bottom: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.faq-answer p:last-child {
    margin-bottom: 0;
}

.faq-answer ul {
    margin: 1rem 0 1rem 2rem;
    list-style: none;
}

.faq-answer li {
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
}

.faq-answer li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
}

@media (max-width: 768px) {
    .faq-section {
        padding: 2rem 1.5rem;
    }

    .faq-section h2 {
        font-size: 2rem;
    }

    .faq-intro {
        font-size: 1rem;
    }

    .faq-question {
        font-size: 1.05rem;
        padding: 1rem;
    }

    .faq-question::after {
        font-size: 1.5rem;
    }
}

@media (max-width: 640px) {
    .faq-section {
        padding: 1.5rem 1rem;
    }

    .faq-section h2 {
        font-size: 1.75rem;
    }

    .faq-question {
        font-size: 1rem;
        padding: 0.875rem;
    }
}