:root {
            --primary: #ff9900;
            --primary-dark: #e68a00;
            --secondary: #1a1a1a;
            --accent: #4a6fa5;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --success: #28a745;
            --danger: #dc3545;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #0f1419;
            color: #e0e0e0;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #ffcc80;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--secondary) 0%, #0a0a0a 100%);
            padding: 1rem 0;
            border-bottom: 3px solid var(--primary);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(to right, var(--primary), #ffcc00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 1px;
        }
        .my-logo a {
            background: none;
            -webkit-text-fill-color: unset;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: rgba(255,255,255,0.03);
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .main-nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .nav-links a {
            color: #ccc;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: var(--transition);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            color: white;
            background: none;
            border: none;
            cursor: pointer;
        }
        .search-box {
            margin: 2.5rem 0;
            padding: 2rem;
            background: rgba(26, 26, 26, 0.8);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .search-box h3 {
            margin-bottom: 1rem;
            color: var(--primary);
        }
        .search-form {
            display: flex;
            gap: 10px;
        }
        .search-form input {
            flex: 1;
            padding: 14px 18px;
            border: 2px solid #333;
            border-radius: var(--radius);
            background: #111;
            color: white;
            font-size: 1rem;
        }
        .search-form button {
            padding: 0 24px;
            background: var(--primary);
            color: var(--secondary);
            border: none;
            border-radius: var(--radius);
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: var(--primary-dark);
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
        }
        .main-content {
            background: rgba(26, 26, 26, 0.7);
            border-radius: var(--radius);
            padding: 2.5rem;
            box-shadow: var(--shadow);
        }
        .sidebar {
            background: rgba(26, 26, 26, 0.7);
            border-radius: var(--radius);
            padding: 1.8rem;
            align-self: start;
        }
        h1, h2, h3, h4 {
            color: #fff;
            margin-top: 2rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            border-left: 5px solid var(--primary);
            padding-left: 1.5rem;
            margin-top: 0;
        }
        h2 {
            font-size: 2.1rem;
            color: var(--primary);
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed rgba(255, 153, 0, 0.3);
        }
        h3 {
            font-size: 1.7rem;
            color: #ffcc80;
        }
        h4 {
            font-size: 1.4rem;
            color: #b3d9ff;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            color: #ccc;
            font-weight: 500;
        }
        .highlight {
            background: rgba(255, 153, 0, 0.15);
            border-left: 4px solid var(--primary);
            padding: 1.2rem 1.5rem;
            margin: 1.8rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .tip {
            background: rgba(74, 111, 165, 0.15);
            border-left: 4px solid var(--accent);
            padding: 1.2rem 1.5rem;
            margin: 1.8rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .feature-img {
            width: 100%;
            margin: 2rem 0;
            box-shadow: 0 8px 25px rgba(0,0,0,0.5);
        }
        ul, ol {
            padding-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.7rem;
        }
        .toc {
            background: rgba(40, 40, 40, 0.8);
            padding: 1.5rem;
            border-radius: var(--radius);
            margin-bottom: 2rem;
        }
        .toc h3 {
            margin-top: 0;
        }
        .toc ul {
            list-style: none;
            padding-left: 0;
        }
        .toc li {
            margin-bottom: 0.5rem;
        }
        .toc a {
            display: block;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
        }
        .toc a:hover {
            background: rgba(255,153,0,0.1);
        }
        .user-interaction {
            margin: 3rem 0;
            padding: 2rem;
            background: rgba(40, 40, 40, 0.8);
            border-radius: var(--radius);
        }
        .rating-box, .comment-box {
            margin-bottom: 2.5rem;
        }
        .rating-box h3, .comment-box h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .stars {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
        }
        .stars i {
            color: #555;
            cursor: pointer;
            font-size: 1.8rem;
            transition: var(--transition);
        }
        .stars i:hover,
        .stars i.active {
            color: gold;
        }
        .comment-form textarea {
            width: 100%;
            padding: 15px;
            background: #111;
            border: 2px solid #333;
            border-radius: var(--radius);
            color: white;
            font-size: 1rem;
            min-height: 150px;
            margin-bottom: 1rem;
            resize: vertical;
        }
        .comment-form button, .rating-box button {
            padding: 12px 28px;
            background: var(--primary);
            color: var(--secondary);
            border: none;
            border-radius: var(--radius);
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
        }
        .comment-form button:hover, .rating-box button:hover {
            background: var(--primary-dark);
        }
        .site-footer {
            background: #0a0a0a;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
            border-top: 1px solid #333;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: var(--primary);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        friend-link {
            display: block;
            padding: 0.8rem;
            background: rgba(255,255,255,0.05);
            border-radius: 4px;
            margin-bottom: 0.8rem;
            border-left: 3px solid var(--primary);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #333;
            color: var(--gray);
            font-size: 0.9rem;
        }
        .last-updated {
            color: var(--gray);
            font-style: italic;
            font-size: 0.9rem;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .btn {
            display: inline-block;
            padding: 10px 22px;
            background: var(--primary);
            color: var(--secondary);
            border-radius: var(--radius);
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(255,153,0,0.2);
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background: var(--secondary);
                flex-direction: column;
                align-items: center;
                padding: 2rem 0;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: var(--transition);
                z-index: 999;
            }
            .nav-links.active {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
            .nav-links li {
                margin: 1rem 0;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .main-content {
                padding: 1.5rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                padding: 14px;
            }
        }