* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #0a0a1a;
            color: #e0e0ff;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: #4dabf7;
            text-decoration: none;
            transition: color 0.3s ease, transform 0.2s ease;
        }
        a:hover {
            color: #74c0fc;
            transform: translateY(-2px);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(135deg, #0066cc, #004d99);
            color: white;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
        }
        .btn:hover {
            background: linear-gradient(135deg, #004d99, #003366);
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(0, 102, 204, 0.5);
        }
        header {
            background: rgba(10, 10, 26, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid #222244;
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #00a8ff, #00ffaa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -1px;
        }
        .logo a:hover {
            filter: brightness(1.2);
        }
        .nav-desktop ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .nav-desktop a {
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 0;
            position: relative;
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #00a8ff;
            transition: width 0.3s ease;
        }
        .nav-desktop a:hover::after {
            width: 100%;
        }
        .nav-toggle {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #e0e0ff;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background: rgba(15, 15, 35, 0.98);
            backdrop-filter: blur(15px);
            padding: 20px;
            border-top: 1px solid #222244;
            z-index: 999;
        }
        .nav-mobile.active {
            display: block;
        }
        .nav-mobile ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .nav-mobile a {
            display: block;
            padding: 12px 0;
            border-bottom: 1px solid #2a2a4a;
            font-size: 1.1rem;
            font-weight: 600;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: #aaaacc;
        }
        .breadcrumb a {
            margin: 0 5px;
        }
        .breadcrumb .separator {
            margin: 0 8px;
            color: #666688;
        }
        .main-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 30px 0;
        }
        article {
            background: rgba(20, 20, 40, 0.7);
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 20, 0.5);
            border: 1px solid #303050;
        }
        .article-header h1 {
            font-size: 2.8rem;
            margin-bottom: 20px;
            background: linear-gradient(90deg, #4dabf7, #00ffaa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            gap: 20px;
            color: #aaaacc;
            margin-bottom: 30px;
            font-size: 0.95rem;
        }
        .article-meta span i {
            margin-right: 8px;
        }
        .content-section {
            margin-bottom: 40px;
        }
        h2 {
            font-size: 2rem;
            margin: 35px 0 20px;
            color: #00ffaa;
            border-left: 5px solid #00a8ff;
            padding-left: 15px;
        }
        h3 {
            font-size: 1.6rem;
            margin: 25px 0 15px;
            color: #4dabf7;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background: linear-gradient(90deg, rgba(0, 168, 255, 0.1), rgba(0, 255, 170, 0.1));
            border-left: 4px solid #00ffaa;
            padding: 20px;
            border-radius: 0 8px 8px 0;
            margin: 25px 0;
        }
        .feature-img {
            margin: 30px auto;
            max-width: 800px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.7);
            border: 2px solid #404070;
        }
        .feature-img figcaption {
            text-align: center;
            font-style: italic;
            color: #aaaacc;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        ul, ol {
            padding-left: 30px;
            margin-bottom: 20px;
        }
        li {
            margin-bottom: 10px;
        }
        blockquote {
            border-left: 5px solid #00a8ff;
            padding-left: 20px;
            margin: 25px 0;
            font-style: italic;
            color: #ccddee;
            background: rgba(0, 168, 255, 0.05);
            padding: 20px;
            border-radius: 0 8px 8px 0;
        }
        .key-term {
            font-weight: 800;
            color: #00ffaa;
            font-size: 1.05em;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: rgba(20, 20, 40, 0.7);
            border-radius: 12px;
            padding: 25px;
            border: 1px solid #303050;
        }
        .sidebar-widget h3 {
            margin-top: 0;
            margin-bottom: 20px;
            font-size: 1.4rem;
            color: #00ffaa;
        }
        .search-form input {
            width: 100%;
            padding: 14px;
            border-radius: 8px;
            border: 1px solid #404070;
            background: #151530;
            color: #e0e0ff;
            margin-bottom: 15px;
        }
        .search-form button {
            width: 100%;
        }
        .rating-widget .stars {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin: 20px 0;
            font-size: 2rem;
            color: #ffd700;
        }
        .rating-widget .stars i {
            cursor: pointer;
            transition: transform 0.2s;
        }
        .rating-widget .stars i:hover {
            transform: scale(1.2);
        }
        .comment-form textarea {
            width: 100%;
            padding: 15px;
            border-radius: 8px;
            border: 1px solid #404070;
            background: #151530;
            color: #e0e0ff;
            margin-bottom: 15px;
            min-height: 150px;
            resize: vertical;
        }
        .comment-form input {
            width: 100%;
            padding: 14px;
            border-radius: 8px;
            border: 1px solid #404070;
            background: #151530;
            color: #e0e0ff;
            margin-bottom: 15px;
        }
        footer {
            background: rgba(10, 10, 25, 0.95);
            border-top: 1px solid #222244;
            padding: 50px 0 30px;
            margin-top: 50px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #00a8ff, #00ffaa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 20px;
        }
        .footer-about p {
            color: #aaaacc;
        }
        friend-link {
            display: block;
            margin-bottom: 15px;
        }
        friend-link a {
            color: #4dabf7;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid #2a2a4a;
            color: #8888aa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .main-layout {
                grid-template-columns: 1fr;
            }
            .nav-desktop {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            article {
                padding: 25px;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 15px;
            }
            .article-header h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.4rem;
            }
            .article-meta {
                flex-direction: column;
                gap: 10px;
            }
        }