*, *::before, *::after {
            box-sizing: border-box;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(15px); }
            to { opacity: 1; transform: translateY(0); }
        }
        body {
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            color: #1e293b;
            background-color: #f8fafc;
            line-height: 1.625;
        }
        header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
        }
        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            height: 76px;
            display: table;
            width: 100%;
        }
        .logo-box {
            display: table-cell;
            vertical-align: middle;
            width: 280px;
        }
        .logo-link {
            text-decoration: none;
            color: #0f172a;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: -0.5px;
        }
        .logo-img {
            vertical-align: middle;
            margin-right: 12px;
            width: 34px;
            height: 34px;
            object-fit: contain;
        }
        .menu-box {
            display: table-cell;
            vertical-align: middle;
            text-align: right;
        }
        .menu-box a {
            color: #475569;
            text-decoration: none;
            margin-left: 32px;
            font-size: 15px;
            font-weight: 600;
            transition: color 0.25s ease;
            vertical-align: middle;
        }
        .menu-box a:hover, .menu-box a.active {
            color: #2563eb;
        }
        .github-btn {
            display: inline-block;
            background: #0f172a;
            color: #ffffff !important;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 14px !important;
            font-weight: 600;
            margin-left: 32px;
            transition: all 0.25s ease !important;
            border: 1px solid #0f172a;
            box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
        }
        .github-btn:hover {
            background: #1e293b !important;
            border-color: #1e293b;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(15, 23, 42, 0.25);
        }
        .github-btn svg {
            vertical-align: middle;
            margin-right: 6px;
            fill: #ffffff;
        }
        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .page-header {
            text-align: center;
            padding: 60px 0 40px 0;
            animation: fadeIn 0.6s ease-out;
            border-bottom: 1px solid #e2e8f0;
        }
        .page-header h1 {
            font-size: 38px;
            color: #0f172a;
            font-weight: 800;
            margin: 0 0 16px 0;
            letter-spacing: -0.5px;
        }
        .page-header p {
            font-size: 16px;
            color: #475569;
            max-width: 650px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .layout-body {
            display: table;
            width: 100%;
            margin-top: 40px;
            table-layout: fixed;
        }
        .sidebar {
            display: table-cell;
            width: 260px;
            vertical-align: top;
            padding-right: 30px;
        }
        .sticky-menu {
            position: sticky;
            top: 116px;
            background: #ffffff;
            border: 1px solid #e2e8f0;
            border-radius: 12px;
            padding: 24px 20px;
        }
        .sticky-menu h4 {
            margin: 0 0 16px 0;
            font-size: 15px;
            color: #0f172a;
            font-weight: 700;
            letter-spacing: 0.5px;
        }
        .sticky-menu ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sticky-menu li {
            margin-bottom: 12px;
        }
        .sticky-menu a {
            display: block;
            color: #64748b;
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: color 0.2s;
        }
        .sticky-menu a:hover {
            color: #2563eb;
        }
        .main-content {
            display: table-cell;
            vertical-align: top;
            background: #ffffff;
            border: 1px solid #e2e8f0;
            border-radius: 16px;
            padding: 50px 40px;
            animation: fadeIn 0.8s ease-out 0.1s both;
        }
        .article-section {
            margin-bottom: 50px;
        }
        .article-section h2 {
            font-size: 26px;
            color: #0f172a;
            margin: 0 0 20px 0;
            font-weight: 800;
            padding-bottom: 10px;
            border-bottom: 2px solid #f1f5f9;
        }
        .article-section h3 {
            font-size: 19px;
            color: #1e293b;
            margin: 30px 0 14px 0;
            font-weight: 700;
        }
        .article-section p {
            font-size: 15.5px;
            color: #334155;
            margin: 0 0 18px 0;
            line-height: 1.75;
            text-align: justify;
        }
        .tutorial-img-container {
            margin: 30px 0;
            background: #f8fafc;
            border: 1px solid #e2e8f0;
            border-radius: 10px;
            padding: 8px;
            box-shadow: 0 4px 12px rgba(15, 23, 42, 0.03);
            text-align: center;
        }
        .tutorial-img {
            display: block;
            width: 100%;
            height: auto;
            min-height: 280px;
            max-height: 480px;
            object-fit: cover;
            border-radius: 6px;
            background-color: #eaedf2;
        }
        .img-caption {
            display: block;
            font-size: 13px;
            color: #64748b;
            margin-top: 10px;
            font-weight: 500;
        }
        .code-block {
            background-color: #0f172a;
            color: #e2e8f0;
            padding: 18px 24px;
            border-radius: 8px;
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
            font-size: 14px;
            line-height: 1.6;
            margin: 20px 0;
            overflow-x: auto;
        }
        .highlight-box {
            background-color: #eff6ff;
            border-left: 4px solid #2563eb;
            padding: 20px;
            border-radius: 0 8px 8px 0;
            margin: 24px 0;
        }
        .highlight-box p {
            margin: 0;
            color: #1e3a8a;
            font-size: 14.5px;
        }
        footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 60px 24px;
            font-size: 14px;
            border-top: 1px solid #1e293b;
            margin-top: 100px;
        }
        .footer-layout {
            display: table;
            width: 100%;
        }
        .footer-left {
            display: table-cell;
            width: 60%;
            vertical-align: top;
        }
        .footer-right {
            display: table-cell;
            width: 40%;
            text-align: right;
            vertical-align: top;
        }
        .footer-left p {
            margin: 0 0 12px 0;
            line-height: 1.6;
        }
        .footer-right p {
            margin: 0 0 12px 0;
        }
        .footer-links {
            margin-top: 20px;
        }
        .footer-links a {
            color: #64748b;
            text-decoration: none;
            margin-left: 20px;
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: #cbd5e1;
        }
        @media (max-width: 912px) {
            .layout-body {
                display: block;
            }
            .sidebar {
                display: block;
                width: 100%;
                padding-right: 0;
                margin-bottom: 30px;
            }
            .sticky-menu {
                position: static;
            }
            .main-content {
                display: block;
                padding: 30px 20px;
            }
        }
        @media (max-width: 768px) {
            .nav-container, .footer-layout {
                display: block;
                width: 100%;
            }
            .logo-box, .menu-box, .footer-left, .footer-right {
                display: block;
                width: 100%;
                text-align: left;
                padding: 0;
            }
            .logo-box {
                padding-top: 16px;
            }
            .menu-box {
                padding: 16px 0;
            }
            .menu-box a {
                margin-left: 0;
                margin-right: 24px;
                display: inline-block;
                margin-bottom: 12px;
            }
            .github-btn {
                margin-left: 0;
                margin-top: 4px;
                display: inline-block;
            }
            .footer-right {
                margin-top: 32px;
            }
            .footer-links a {
                margin-left: 0;
                margin-right: 20px;
            }
        }