* { 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 20% 30%, rgba(26, 65, 120, 0.15) 0%, transparent 20%),
                              radial-gradient(circle at 80% 70%, rgba(80, 20, 100, 0.1) 0%, transparent 20%);
            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; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; }
        .site-header {
            background: rgba(10, 20, 40, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid #1a4177;
            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: 'Arial Black', Impact, sans-serif;
            font-size: 2.2rem;
            background: linear-gradient(90deg, #00a8ff, #00ffaa);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 0 15px rgba(0, 168, 255, 0.5);
            letter-spacing: 1px;
        }
        .my-logo:hover { transform: scale(1.03); }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            color: #b0d0ff;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover, .main-nav a:focus { border-color: #00a8ff; color: #fff; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #00a8ff;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 15px 0;
            background: rgba(20, 30, 60, 0.7);
            margin-bottom: 30px;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin-left: 10px;
            color: #6c8ebf;
        }
        .search-section { margin: 30px 0; text-align: center; }
        .search-form {
            display: inline-flex;
            max-width: 500px;
            width: 100%;
        }
        .search-input {
            flex-grow: 1;
            padding: 15px 20px;
            border: 2px solid #2a4a7a;
            border-radius: 50px 0 0 50px;
            background: rgba(30, 40, 70, 0.8);
            color: #fff;
            font-size: 1rem;
        }
        .search-button {
            padding: 0 25px;
            background: linear-gradient(90deg, #2a4a7a, #1a4177);
            color: white;
            border: none;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s;
        }
        .search-button:hover { background: linear-gradient(90deg, #3a5a8a, #2a4a7a); }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 40px 0;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        article {
            background: rgba(15, 25, 50, 0.7);
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 10, 30, 0.5);
            border: 1px solid #2a3a6a;
        }
        h1 {
            font-size: 3rem;
            margin-bottom: 25px;
            color: #00ffaa;
            text-shadow: 0 0 10px #00ffaa;
            line-height: 1.2;
            border-left: 5px solid #00a8ff;
            padding-left: 20px;
        }
        h2 {
            font-size: 2.2rem;
            margin: 45px 0 20px;
            color: #4dabf7;
            padding-bottom: 10px;
            border-bottom: 2px dashed #3a5a8a;
        }
        h3 {
            font-size: 1.7rem;
            margin: 35px 0 15px;
            color: #74c0fc;
        }
        h4 {
            font-size: 1.4rem;
            margin: 25px 0 12px;
            color: #a5d8ff;
        }
        p {
            margin-bottom: 22px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: #b0d0ff;
            background: rgba(26, 65, 120, 0.3);
            padding: 20px;
            border-radius: 10px;
            border-left: 4px solid #00ffaa;
            margin-bottom: 35px;
        }
        strong { color: #fff; font-weight: 700; }
        em { color: #ffcc00; font-style: italic; }
        .highlight-box {
            background: linear-gradient(135deg, rgba(26, 65, 120, 0.4), rgba(80, 20, 100, 0.4));
            border: 1px solid #4dabf7;
            border-radius: 10px;
            padding: 25px;
            margin: 30px 0;
        }
        blockquote {
            border-left: 5px solid #ffcc00;
            padding-left: 25px;
            margin: 30px 0;
            font-style: italic;
            color: #d0e0ff;
            background: rgba(255, 204, 0, 0.05);
            padding: 20px;
            border-radius: 0 10px 10px 0;
        }
        .sidebar {
            background: rgba(20, 30, 60, 0.8);
            border-radius: 15px;
            padding: 25px;
            align-self: start;
            position: sticky;
            top: 120px;
            border: 1px solid #3a5a8a;
        }
        .sidebar h3 {
            color: #00ffaa;
            text-align: center;
            margin-top: 0;
        }
        .sidebar ul {
            list-style: none;
            margin-top: 20px;
        }
        .sidebar li { margin-bottom: 15px; padding-bottom: 15px; border-bottom: 1px dotted #4a6a9a; }
        .sidebar a { display: block; padding: 8px 0; }
        .featured-image {
            margin: 35px auto;
            text-align: center;
            border-radius: 10px;
            overflow: hidden;
            border: 3px solid #3a5a8a;
            box-shadow: 0 15px 25px rgba(0, 0, 0, 0.7);
            max-width: 800px;
        }
        .featured-image img { width: 100%; transition: transform 0.5s ease; }
        .featured-image:hover img { transform: scale(1.03); }
        .caption {
            font-size: 0.95rem;
            color: #aaa;
            padding: 10px;
            background: rgba(0,0,0,0.5);
        }
        .interactive-section {
            background: rgba(25, 35, 65, 0.8);
            border-radius: 15px;
            padding: 30px;
            margin-top: 50px;
            border: 1px solid #4a6a9a;
        }
        .interactive-section h2 { text-align: center; }
        .rating-form, .comment-form {
            margin-top: 25px;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin: 20px 0;
            font-size: 2rem;
            color: #555;
        }
        .stars .star { cursor: pointer; transition: color 0.2s, transform 0.2s; }
        .stars .star:hover, .stars .star.active { color: #ffcc00; transform: scale(1.2); }
        .form-group { margin-bottom: 20px; }
        label { display: block; margin-bottom: 8px; color: #b0d0ff; font-weight: 600; }
        input, textarea, select {
            width: 100%;
            padding: 15px;
            border-radius: 8px;
            border: 1px solid #3a5a8a;
            background: rgba(30, 40, 70, 0.9);
            color: #fff;
            font-size: 1rem;
        }
        textarea { min-height: 150px; resize: vertical; }
        .submit-btn {
            background: linear-gradient(90deg, #00a8ff, #0097e6);
            color: white;
            border: none;
            padding: 15px 35px;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            display: block;
            margin: 25px auto 0;
            transition: all 0.3s;
        }
        .submit-btn:hover {
            background: linear-gradient(90deg, #0097e6, #00a8ff);
            box-shadow: 0 0 20px rgba(0, 168, 255, 0.5);
            transform: translateY(-3px);
        }
        .site-footer {
            background: rgba(10, 15, 30, 0.98);
            border-top: 2px solid #1a4177;
            margin-top: 60px;
            padding: 40px 0 20px;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
            margin-bottom: 30px;
        }
        .footer-section { flex: 1; min-width: 250px; }
        .footer-section h3 {
            color: #00ffaa;
            margin-bottom: 20px;
            font-size: 1.5rem;
        }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 12px; }
        friend-link {
            display: block;
            background: rgba(40, 50, 90, 0.5);
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 10px;
            border-left: 4px solid #00a8ff;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #2a3a6a;
            color: #8a9bba;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-content { flex-wrap: wrap; }
            .hamburger { display: block; }
            .main-nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
            }
            .main-nav.active { max-height: 400px; margin-top: 20px; }
            .main-nav ul {
                flex-direction: column;
                gap: 15px;
                align-items: center;
            }
            h1 { font-size: 2.3rem; }
            h2 { font-size: 1.9rem; }
            h3 { font-size: 1.5rem; }
            article { padding: 25px; }
            .sidebar { position: static; margin-top: 30px; }
        }
        .update-time {
            color: #ffcc00;
            font-size: 0.95rem;
            text-align: right;
            margin-bottom: 20px;
            font-style: italic;
        }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        .fade-in { animation: fadeIn 1s ease; }
        @keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
        .pulse { animation: pulse 2s infinite; }
        @keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.7; } }