* {
            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: #e0e0e0;
            background: #0a0a12;
            background-image: radial-gradient(circle at 15% 20%, rgba(41, 46, 73, 0.7) 0%, transparent 20%),
                              radial-gradient(circle at 85% 30%, rgba(20, 25, 45, 0.8) 0%, transparent 20%);
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            color: #4a9eff;
            text-decoration: none;
            transition: color 0.3s ease, text-shadow 0.3s ease;
        }
        a:hover {
            color: #80bdff;
            text-shadow: 0 0 8px rgba(74, 158, 255, 0.5);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: rgba(10, 15, 30, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid #1a2a3a;
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Impact', 'Arial Black', sans-serif;
            font-size: 2.5rem;
            color: #f0f0f0;
            text-decoration: none;
            letter-spacing: 2px;
            position: relative;
            display: inline-block;
        }
        .my-logo span {
            color: #ffcc00;
            text-shadow: 0 0 10px #ffcc00aa;
        }
        .my-logo::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, #4a9eff, #ffcc00);
            border-radius: 2px;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            background: transparent;
            border: none;
            padding: 5px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background: #4a9eff;
            margin: 4px 0;
            border-radius: 2px;
            transition: 0.3s;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .main-nav a {
            color: #b0b0c0;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 5px;
            display: block;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background: rgba(74, 158, 255, 0.15);
            color: #4a9eff;
        }
        .breadcrumb {
            padding: 15px 0;
            background: rgba(20, 25, 40, 0.7);
            font-size: 0.9rem;
            margin-bottom: 30px;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 10px;
            color: #666;
        }
        .search-section {
            background: rgba(30, 35, 60, 0.8);
            padding: 25px;
            border-radius: 12px;
            margin: 30px 0;
            text-align: center;
            border: 1px solid #2a3a5a;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            gap: 10px;
        }
        .search-input {
            flex: 1;
            padding: 15px 20px;
            border: 2px solid #3a4a6a;
            border-radius: 50px;
            background: rgba(15, 20, 35, 0.9);
            color: #fff;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.3s;
        }
        .search-input:focus {
            border-color: #4a9eff;
        }
        .search-btn {
            padding: 15px 30px;
            border-radius: 50px;
            background: linear-gradient(135deg, #4a9eff, #2a5fcf);
            color: white;
            border: none;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .search-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(42, 95, 207, 0.4);
        }
        main {
            padding: 30px 0 60px;
        }
        article {
            background: rgba(20, 25, 40, 0.7);
            border-radius: 16px;
            padding: 40px;
            border: 1px solid #2a354a;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
            margin-bottom: 40px;
        }
        h1, h2, h3, h4 {
            font-family: 'Georgia', 'Times New Roman', serif;
            color: #f0f0f0;
            margin-top: 1.5em;
            margin-bottom: 0.7em;
            line-height: 1.3;
        }
        h1 {
            font-size: 3.2rem;
            color: #ffcc00;
            text-align: center;
            border-bottom: 3px solid #4a9eff;
            padding-bottom: 20px;
            margin-top: 0;
            text-shadow: 0 0 15px rgba(255, 204, 0, 0.3);
        }
        h2 {
            font-size: 2.4rem;
            color: #4a9eff;
            padding-left: 15px;
            border-left: 5px solid #ffcc00;
        }
        h3 {
            font-size: 1.8rem;
            color: #a0c8ff;
        }
        h4 {
            font-size: 1.4rem;
            color: #b8d4ff;
        }
        p {
            margin-bottom: 1.5em;
            text-align: justify;
            font-size: 1.1rem;
        }
        strong {
            color: #ffcc00;
            font-weight: 700;
        }
        .intro {
            font-size: 1.3rem;
            background: rgba(74, 158, 255, 0.08);
            padding: 25px;
            border-radius: 10px;
            border-left: 5px solid #ffcc00;
            margin: 30px 0;
        }
        .highlight-box {
            background: linear-gradient(145deg, rgba(30, 40, 70, 0.9), rgba(20, 30, 60, 0.9));
            border: 1px solid #3a5a8a;
            border-radius: 12px;
            padding: 25px;
            margin: 30px 0;
            position: relative;
            overflow: hidden;
        }
        .highlight-box::before {
            content: '⚡';
            position: absolute;
            top: 10px;
            right: 15px;
            font-size: 2rem;
            opacity: 0.2;
        }
        .feature-img {
            width: 100%;
            max-width: 900px;
            margin: 40px auto;
            border: 3px solid #3a4a6a;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.7);
            transition: transform 0.5s ease, box-shadow 0.5s ease;
        }
        .feature-img:hover {
            transform: scale(1.01);
            box-shadow: 0 15px 35px rgba(74, 158, 255, 0.3);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #aaa;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .related-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin: 40px 0;
        }
        .related-link-card {
            background: rgba(40, 50, 80, 0.6);
            padding: 20px;
            border-radius: 10px;
            border: 1px solid #4a5a8a;
            transition: transform 0.3s, border-color 0.3s;
        }
        .related-link-card:hover {
            transform: translateY(-5px);
            border-color: #4a9eff;
        }
        .user-interaction {
            background: rgba(25, 30, 50, 0.8);
            border-radius: 16px;
            padding: 35px;
            margin: 50px 0;
            border: 1px solid #2a3a5a;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 30px;
        }
        .interaction-form {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .form-group label {
            font-weight: 600;
            color: #a0c8ff;
        }
        .form-control {
            padding: 15px;
            border-radius: 8px;
            border: 1px solid #3a4a6a;
            background: rgba(15, 20, 35, 0.9);
            color: #fff;
            font-size: 1rem;
            resize: vertical;
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: #444;
            cursor: pointer;
        }
        .rating-stars .star {
            transition: color 0.2s;
        }
        .rating-stars .star:hover,
        .rating-stars .star.active {
            color: #ffcc00;
        }
        .submit-btn {
            align-self: flex-start;
            padding: 15px 35px;
            border-radius: 8px;
            background: linear-gradient(135deg, #ff9900, #cc6600);
            color: white;
            border: none;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .submit-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(204, 102, 0, 0.4);
        }
        .site-footer {
            background: rgba(10, 15, 30, 0.98);
            border-top: 1px solid #1a2a3a;
            padding: 50px 0 30px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h4 {
            color: #ffcc00;
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            background: rgba(40, 50, 80, 0.5);
            padding: 15px;
            margin-bottom: 10px;
            border-radius: 6px;
            border-left: 4px solid #4a9eff;
            transition: background 0.3s;
        }
        friend-link:hover {
            background: rgba(60, 80, 120, 0.7);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #2a3a5a;
            color: #888;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.8rem; }
            h2 { font-size: 2.1rem; }
            .header-content { flex-wrap: wrap; }
            .main-nav ul { gap: 15px; }
        }
        @media (max-width: 768px) {
            .hamburger { display: flex; }
            .main-nav {
                display: none;
                width: 100%;
                order: 3;
                margin-top: 20px;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 10px;
            }
            .search-form { flex-direction: column; }
            .search-btn { width: 100%; }
            article { padding: 25px; }
            .interaction-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 576px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .container { padding: 0 15px; }
            .my-logo { font-size: 2rem; }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        article, .user-interaction, .search-section {
            animation: fadeIn 0.8s ease-out;
        }