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

        :root {
            --primary: #6D28D9;
            --primary-light: #7C3AED;
            --secondary: #0F172A;
            --accent: #F7931E;
            --accent-light: #FBBF24;
            --bg-main: #0F1D35;
            --bg-section-dark: #0A1428;
            --bg-section-light: #151F37;
            --bg-card: #1A2A4A;
            --border-color: #2A3D5C;
            --text-primary: #F0F4F8;
            --text-secondary: #B8C5D6;
            --text-tertiary: #8B99AE;
            --success: #10B981;
            --warning: #F59E0B;
            --danger: #EF4444;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
        }

        html, body {
            width: 100%;
            height: 100%;
            background-color: var(--bg-main);
            color: var(--text-primary);
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            font-size: clamp(0.875rem, 1.5vw, 1rem);
            line-height: 1.6;
            overflow-x: hidden;
        }

        .yewq9-navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 70px;
            background: linear-gradient(135deg, rgba(15, 29, 53, 0.98) 0%, rgba(10, 20, 40, 0.98) 100%);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 clamp(1.5rem, 5vw, 3rem);
            z-index: 1000;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }

        .yewq9-navbar.scrolled {
            box-shadow: var(--shadow-md);
        }

        .yewq9-logo {
            flex-shrink: 0;
            width: 45px;
            height: 45px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .yewq9-logo img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        .yewq9-nav-menu {
            display: flex;
            align-items: center;
            gap: clamp(1.5rem, 3vw, 3rem);
            list-style: none;
        }

        .yewq9-nav-item a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: clamp(0.85rem, 1.2vw, 0.95rem);
            position: relative;
            padding: 8px 0;
            transition: all 0.3s ease;
        }

        .yewq9-nav-item a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transition: width 0.3s ease;
        }

        .yewq9-nav-item a:hover,
        .yewq9-nav-item a.active {
            color: var(--text-primary);
        }

        .yewq9-nav-item a:hover::after,
        .yewq9-nav-item a.active::after {
            width: 100%;
        }

        .yewq9-mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            z-index: 1001;
        }

        .yewq9-hero {
            margin-top: 70px;
            background: linear-gradient(135deg, var(--bg-section-light) 0%, var(--bg-section-dark) 100%);
            padding: clamp(3rem, 8vw, 6rem) clamp(1.5rem, 5vw, 3rem);
            position: relative;
            overflow: hidden;
        }

        .yewq9-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(109, 40, 217, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            animation: float 6s ease-in-out infinite;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0px); }
            50% { transform: translateY(30px); }
        }

        .yewq9-hero-content {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: clamp(2rem, 5vw, 4rem);
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .yewq9-hero-text h1 {
            font-size: clamp(2rem, 5vw, 3.5rem);
            font-weight: 800;
            margin-bottom: 1.5rem;
            background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        .yewq9-hero-text p {
            font-size: clamp(1rem, 2vw, 1.25rem);
            color: var(--text-secondary);
            margin-bottom: 2rem;
            line-height: 1.8;
        }

        .yewq9-hero-image {
            position: relative;
            height: 400px;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
        }

        .yewq9-hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .yewq9-doc-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: clamp(2rem, 5vw, 4rem);
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 3rem;
        }

        .yewq9-doc-sidebar {
            background-color: var(--bg-section-light);
            border-radius: 12px;
            padding: 2rem;
            height: fit-content;
            position: sticky;
            top: 90px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .yewq9-doc-sidebar h3 {
            font-size: 0.95rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--accent);
            margin-bottom: 1.5rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid var(--border-color);
        }

        .yewq9-doc-nav {
            list-style: none;
        }

        .yewq9-doc-nav li {
            margin-bottom: 0.75rem;
        }

        .yewq9-doc-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            display: block;
            padding: 0.5rem 1rem;
            border-radius: 8px;
            transition: all 0.3s ease;
            border-left: 3px solid transparent;
        }

        .yewq9-doc-nav a:hover,
        .yewq9-doc-nav a.active {
            color: var(--accent);
            background-color: rgba(247, 147, 30, 0.1);
            border-left-color: var(--accent);
            padding-left: 1.5rem;
        }

        .yewq9-doc-content {
            background-color: var(--bg-section-light);
            border-radius: 12px;
            padding: clamp(2rem, 4vw, 3rem);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .yewq9-doc-section {
            margin-bottom: 4rem;
            padding-bottom: 3rem;
            border-bottom: 1px solid var(--border-color);
        }

        .yewq9-doc-section:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }

        .yewq9-doc-section h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            margin-bottom: 1.5rem;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .yewq9-doc-section h2::before {
            content: '';
            display: inline-block;
            width: 4px;
            height: 2rem;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            border-radius: 2px;
        }

        .yewq9-doc-section h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-top: 2rem;
            margin-bottom: 1rem;
            color: var(--accent);
        }

        .yewq9-doc-section p {
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            line-height: 1.8;
        }

        .yewq9-code-block {
            background-color: var(--bg-section-dark);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 1.5rem;
            margin: 1.5rem 0;
            overflow-x: auto;
            position: relative;
        }

        .yewq9-code-block::before {
            content: attr(data-language);
            position: absolute;
            top: 0.5rem;
            right: 1rem;
            font-size: 0.75rem;
            color: var(--accent);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .yewq9-code-block code {
            color: var(--text-secondary);
            font-family: 'Courier New', monospace;
            font-size: 0.9rem;
            line-height: 1.6;
            display: block;
        }

        .yewq9-feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 2rem 0;
        }

        .yewq9-feature-card {
            background-color: var(--bg-section-dark);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 2rem;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .yewq9-feature-card::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(109, 40, 217, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            transition: all 0.3s ease;
        }

        .yewq9-feature-card:hover {
            border-color: var(--accent);
            background-color: rgba(247, 147, 30, 0.05);
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }

        .yewq9-feature-card:hover::before {
            top: -25%;
            right: -25%;
        }

        .yewq9-feature-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 1rem;
            position: relative;
            z-index: 2;
        }

        .yewq9-feature-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            position: relative;
            z-index: 2;
        }

        .yewq9-api-reference {
            background-color: var(--bg-section-dark);
            border-left: 4px solid var(--primary);
            border-radius: 8px;
            padding: 1.5rem;
            margin: 2rem 0;
        }

        .yewq9-api-reference strong {
            color: var(--accent);
        }

        .yewq9-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
        }

        .yewq9-table thead {
            background-color: var(--bg-section-dark);
        }

        .yewq9-table th {
            padding: 1rem;
            text-align: left;
            font-weight: 600;
            color: var(--accent);
            border-bottom: 2px solid var(--border-color);
        }

        .yewq9-table td {
            padding: 1rem;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-color);
        }

        .yewq9-table tbody tr:hover {
            background-color: rgba(247, 147, 30, 0.05);
        }

        .yewq9-quick-start {
            background: linear-gradient(135deg, rgba(109, 40, 217, 0.1) 0%, rgba(247, 147, 30, 0.05) 100%);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 2.5rem;
            margin: 3rem 0;
        }

        .yewq9-quick-start h3 {
            color: var(--accent);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }

        .yewq9-step-list {
            list-style: none;
            counter-reset: step-counter;
        }

        .yewq9-step-list li {
            counter-increment: step-counter;
            margin-bottom: 1.5rem;
            padding-left: 3rem;
            position: relative;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .yewq9-step-list li::before {
            content: counter(step-counter);
            position: absolute;
            left: 0;
            top: 0;
            width: 2.5rem;
            height: 2.5rem;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            font-size: 1rem;
        }

        .yewq9-doc-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            margin: 2rem 0;
            display: block;
            box-shadow: var(--shadow-md);
        }

        .yewq9-note {
            background-color: rgba(16, 185, 129, 0.1);
            border-left: 4px solid var(--success);
            border-radius: 8px;
            padding: 1.5rem;
            margin: 2rem 0;
            color: var(--text-secondary);
        }

        .yewq9-note strong {
            color: var(--success);
        }

        .yewq9-warning {
            background-color: rgba(245, 158, 11, 0.1);
            border-left: 4px solid var(--warning);
            border-radius: 8px;
            padding: 1.5rem;
            margin: 2rem 0;
            color: var(--text-secondary);
        }

        .yewq9-warning strong {
            color: var(--warning);
        }

        .yewq9-footer {
            background-color: var(--bg-section-dark);
            border-top: 1px solid var(--border-color);
            padding: clamp(2rem, 5vw, 4rem) clamp(1.5rem, 5vw, 3rem);
            margin-top: 4rem;
        }

        .yewq9-footer-content {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .yewq9-footer-section h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 1rem;
        }

        .yewq9-footer-section h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
        }

        .yewq9-footer-section ul {
            list-style: none;
        }

        .yewq9-footer-section a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            display: block;
            margin-bottom: 0.75rem;
            transition: all 0.3s ease;
        }

        .yewq9-footer-section a:hover {
            color: var(--accent);
            padding-left: 0.5rem;
        }

        .yewq9-footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 2rem;
            text-align: center;
            color: var(--text-tertiary);
            font-size: 0.9rem;
        }

        .yewq9-footer-bottom p {
            margin-bottom: 0.5rem;
        }

        .yewq9-back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border: none;
            border-radius: 50%;
            color: white;
            cursor: pointer;
            display: none;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-md);
            z-index: 999;
        }

        .yewq9-back-to-top:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .yewq9-back-to-top.show {
            display: flex;
        }

        .yewq9-install-guide {
            background: linear-gradient(135deg, var(--bg-section-light) 0%, var(--bg-section-dark) 100%);
            border-radius: 12px;
            padding: 2.5rem;
            margin: 3rem 0;
            border: 1px solid var(--border-color);
        }

        .yewq9-platform-tabs {
            display: flex;
            gap: 1rem;
            margin: 2rem 0;
            flex-wrap: wrap;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 1rem;
        }

        .yewq9-platform-tab {
            background: none;
            border: none;
            color: var(--text-secondary);
            padding: 0.75rem 1.5rem;
            cursor: pointer;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
            font-size: 0.95rem;
        }

        .yewq9-platform-tab::after {
            content: '';
            position: absolute;
            bottom: -1rem;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--accent);
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

        .yewq9-platform-tab:hover {
            color: var(--accent);
        }

        .yewq9-platform-tab.active {
            color: var(--accent);
        }

        .yewq9-platform-tab.active::after {
            transform: scaleX(1);
        }

        .yewq9-content-section {
            background-color: var(--bg-section-dark);
            border-radius: 8px;
            padding: 2rem;
            margin: 2rem 0;
        }

        @media (max-width: 1024px) {
            .yewq9-doc-container {
                grid-template-columns: 1fr;
            }

            .yewq9-doc-sidebar {
                position: relative;
                top: auto;
                sticky: initial;
            }

            .yewq9-hero-content {
                grid-template-columns: 1fr;
            }

            .yewq9-hero-image {
                height: 300px;
            }
        }

        @media (max-width: 768px) {
            .yewq9-navbar {
                padding: 0 1.5rem;
            }

            .yewq9-nav-menu {
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: var(--bg-section-light);
                flex-direction: column;
                gap: 0;
                list-style: none;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease;
                border-bottom: 1px solid var(--border-color);
            }

            .yewq9-nav-menu.active {
                max-height: 500px;
            }

            .yewq9-nav-item {
                width: 100%;
            }

            .yewq9-nav-item a {
                padding: 1rem 1.5rem;
                display: block;
                border-bottom: 1px solid var(--border-color);
            }

            .yewq9-nav-item a::after {
                display: none;
            }

            .yewq9-mobile-toggle {
                display: block;
            }

            .yewq9-hero {
                margin-top: 70px;
                padding: 2rem 1.5rem;
            }

            .yewq9-doc-section h2 {
                font-size: 1.3rem;
            }

            .yewq9-feature-grid {
                grid-template-columns: 1fr;
            }

            .yewq9-platform-tabs {
                flex-direction: column;
            }

            .yewq9-platform-tab {
                width: 100%;
                text-align: left;
            }

            .yewq9-back-to-top {
                width: 45px;
                height: 45px;
                font-size: 1.2rem;
                bottom: 1.5rem;
                right: 1.5rem;
            }
        }

        @media (max-width: 480px) {
            .yewq9-hero-text h1 {
                font-size: 1.75rem;
            }

            .yewq9-doc-content {
                padding: 1.5rem 1rem;
            }

            .yewq9-doc-section h2::before {
                width: 3px;
            }

            .yewq9-code-block {
                padding: 1rem;
                margin: 1rem 0;
            }

            .yewq9-table {
                font-size: 0.85rem;
            }

            .yewq9-table th,
            .yewq9-table td {
                padding: 0.75rem;
            }

            .yewq9-footer-content {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        a:hover {
            color: var(--accent-light);
        }

        strong {
            color: var(--accent);
        }

        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }

        ul li, ol li {
            margin-bottom: 0.75rem;
            color: var(--text-secondary);
        }