* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            background-image: linear-gradient(to bottom, #0a0e2a 0%, #1a1f3a 150px, #f8f9fa 150px);
            background-attachment: fixed;
        }
        a { color: #ffcc00; text-decoration: none; transition: color 0.3s, transform 0.2s; }
        a:hover { color: #fff; transform: translateY(-2px); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { padding-left: 1.5em; margin-bottom: 1.5rem; }
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        .site-header {
            background-color: rgba(10, 14, 42, 0.95);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(90deg, #ffcc00 0%, #ff0066 50%, #00ccff 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 0 15px rgba(255, 204, 0, 0.3);
            letter-spacing: 1px;
        }
        .my-logo:hover { transform: scale(1.05); }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #ccc;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover { color: #ffcc00; }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #ffcc00;
            transition: width 0.3s;
        }
        .main-nav a:hover::after { width: 100%; }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #ffcc00;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav ul {
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: rgba(10, 14, 42, 0.98);
                padding: 1rem 0;
                display: none;
                box-shadow: 0 10px 15px rgba(0,0,0,0.3);
            }
            .main-nav.active ul { display: flex; }
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #1a1f3a;
            color: #aaa;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #ffcc00; }
        .breadcrumb span { color: #ccc; }
        .search-form {
            display: flex;
            margin-left: 2rem;
        }
        .search-input {
            padding: 0.5rem 1rem;
            border: 2px solid #444;
            border-radius: 50px 0 0 50px;
            background: #222;
            color: #fff;
            width: 200px;
        }
        .search-btn {
            background: #ff0066;
            color: white;
            border: none;
            padding: 0.5rem 1.5rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-btn:hover { background: #cc0052; }
        @media (max-width: 992px) {
            .search-form { margin: 1rem 0 0; order: 3; width: 100%; }
            .search-input { width: 100%; }
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2.5rem 0;
            background-color: #fff;
            border-radius: 15px 15px 0 0;
            box-shadow: 0 -5px 25px rgba(0, 0, 0, 0.05);
            margin-top: -10px;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        article {
            padding-right: 1.5rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #0a0e2a;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #ffcc00;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: #1a1f3a;
            margin: 2.5rem 0 1.5rem;
            padding-left: 10px;
            border-left: 5px solid #ff0066;
        }
        h3 {
            font-size: 1.6rem;
            color: #333;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #555;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            color: #444;
            background: linear-gradient(to right, #fffae6, #fff);
            padding: 1.5rem;
            border-radius: 10px;
            border-left: 5px solid #ffcc00;
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #fffae6;
            border-left: 4px solid #ffcc00;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .feature-img {
            width: 100%;
            border-radius: 12px;
            margin: 2rem auto;
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
            border: 5px solid #fff;
            outline: 1px solid #ddd;
        }
        .caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .sidebar {
            background-color: #f1f3f9;
            padding: 1.5rem;
            border-radius: 12px;
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 {
            color: #1a1f3a;
            margin-top: 0;
            border-bottom: 2px solid #ffcc00;
            padding-bottom: 0.5rem;
        }
        .related-links {
            list-style: none;
            padding-left: 0;
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed #ccc;
        }
        .related-links a {
            color: #444;
            display: flex;
            align-items: center;
        }
        .related-links a::before {
            content: '▶';
            color: #ff0066;
            margin-right: 10px;
            font-size: 0.8rem;
        }
        .related-links a:hover { color: #ff0066; }
        .user-feedback {
            background-color: #f9f9ff;
            padding: 2rem;
            border-radius: 12px;
            margin-top: 3rem;
            border: 1px solid #e0e0ff;
        }
        .rating-section, .comment-section {
            margin-bottom: 2.5rem;
        }
        .stars {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active { color: #ffcc00; }
        textarea, input[type="text"], input[type="email"] {
            width: 100%;
            padding: 0.8rem;
            margin: 0.5rem 0 1rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-family: inherit;
        }
        .submit-btn {
            background: linear-gradient(90deg, #ff0066, #ff6600);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            cursor: pointer;
            font-weight: bold;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .submit-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(255, 0, 102, 0.3);
        }
        .site-footer {
            background-color: #0a0e2a;
            color: #aaa;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo {
            font-size: 2rem;
            margin-bottom: 1rem;
        }
        .footer-links h4 {
            color: #ffcc00;
            margin-bottom: 1rem;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li { margin-bottom: 0.5rem; }
        friend-link {
            display: block;
            background-color: rgba(255,255,255,0.05);
            padding: 1rem;
            border-radius: 8px;
            margin: 1rem 0;
            border-left: 4px solid #00ccff;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #1a1f3a;
            font-size: 0.9rem;
            color: #777;
        }
        .last-updated {
            font-size: 0.9rem;
            color: #888;
            text-align: right;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px dashed #ddd;
        }
        .emoji { font-size: 1.2em; }
        .bold { font-weight: 800; color: #1a1f3a; }
        .keyword-link { color: #ff6600; font-weight: 600; }
        .keyword-link:hover { text-decoration: underline; }