* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #0c1a2d;
            color: #e0e0e0;
            line-height: 1.7;
            overflow-x: hidden;
            background-image: radial-gradient(circle at 20% 30%, rgba(28, 58, 112, 0.2) 0%, transparent 20%),
                              radial-gradient(circle at 80% 70%, rgba(112, 28, 56, 0.15) 0%, transparent 20%);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #4dabf7;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #74c0fc;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(135deg, #1a6fb3, #0d4d8a);
            color: white;
            padding: 12px 28px;
            border-radius: 4px;
            border: none;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(0, 60, 120, 0.3);
        }
        .btn:hover {
            background: linear-gradient(135deg, #2183d1, #0f5ba8);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(0, 80, 160, 0.4);
        }
        input, textarea, select {
            padding: 12px 16px;
            border-radius: 4px;
            border: 1px solid #2a4365;
            background-color: #1a2d4a;
            color: #e0e0e0;
            font-size: 1rem;
            width: 100%;
            transition: border-color 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #4dabf7;
        }
        .site-header {
            background-color: rgba(12, 26, 45, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid #1e3a5c;
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }
        .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, #4dabf7, #a5d8ff);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -1px;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            color: #cbd5e0;
            font-weight: 600;
            font-size: 1rem;
            padding: 8px 0;
            position: relative;
        }
        .main-nav a:hover {
            color: #4dabf7;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #4dabf7;
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
            background: transparent;
            border: none;
            padding: 5px;
        }
        .hamburger span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: #4dabf7;
            border-radius: 2px;
            transition: 0.3s;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: #90cdf4;
        }
        .breadcrumb a {
            color: #90cdf4;
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb span {
            margin: 0 8px;
        }
        .search-section {
            background: linear-gradient(to right, rgba(26, 54, 93, 0.8), rgba(19, 42, 73, 0.9));
            padding: 40px 0;
            margin-bottom: 40px;
            border-radius: 8px;
            text-align: center;
        }
        .search-section h2 {
            font-size: 2rem;
            margin-bottom: 20px;
            color: #fff;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            gap: 10px;
        }
        .search-form input {
            flex: 1;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 30px 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background-color: rgba(18, 33, 56, 0.7);
            border-radius: 10px;
            padding: 40px;
            border: 1px solid #2a4365;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }
        .sidebar {
            background-color: rgba(18, 33, 56, 0.7);
            border-radius: 10px;
            padding: 25px;
            border: 1px solid #2a4365;
            align-self: start;
        }
        h1, h2, h3, h4 {
            color: #fff;
            font-weight: 700;
            line-height: 1.3;
            margin-top: 2rem;
            margin-bottom: 1rem;
        }
        h1 {
            font-size: 3rem;
            color: #a5d8ff;
            border-bottom: 3px solid #2a4365;
            padding-bottom: 15px;
            margin-top: 0;
        }
        h2 {
            font-size: 2.2rem;
            color: #90cdf4;
            padding-top: 10px;
        }
        h3 {
            font-size: 1.8rem;
            color: #74c0fc;
        }
        h4 {
            font-size: 1.4rem;
            color: #4dabf7;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        strong {
            color: #fff;
            font-weight: 700;
        }
        .intro {
            font-size: 1.3rem;
            color: #cbd5e0;
            border-left: 4px solid #4dabf7;
            padding-left: 20px;
            margin-bottom: 2.5rem;
            font-style: italic;
        }
        .highlight-box {
            background: linear-gradient(to right, rgba(26, 54, 93, 0.9), rgba(19, 42, 73, 0.9));
            border-left: 5px solid #4dabf7;
            padding: 25px;
            border-radius: 0 8px 8px 0;
            margin: 2rem 0;
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #90cdf4;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .rating-section, .comments-section {
            background-color: rgba(18, 33, 56, 0.7);
            border-radius: 10px;
            padding: 30px;
            margin-top: 40px;
            border: 1px solid #2a4365;
        }
        .rating-form, .comment-form {
            display: grid;
            gap: 20px;
            margin-top: 20px;
        }
        .star-rating {
            display: flex;
            gap: 10px;
            font-size: 2rem;
            color: #4a5568;
            cursor: pointer;
        }
        .star-rating .star {
            transition: color 0.2s;
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: #fbbf24;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        @media (max-width: 768px) {
            .form-row {
                grid-template-columns: 1fr;
            }
        }
        .sidebar h3 {
            font-size: 1.5rem;
            margin-top: 0;
            padding-bottom: 10px;
            border-bottom: 2px solid #2a4365;
        }
        .sidebar ul {
            list-style: none;
            padding-left: 0;
        }
        .sidebar li {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px solid #2a4365;
        }
        .sidebar li:last-child {
            border-bottom: none;
        }
        .sidebar a {
            display: block;
            color: #cbd5e0;
            padding: 5px 0;
        }
        .sidebar a:hover {
            color: #4dabf7;
            padding-left: 5px;
            transition: all 0.3s;
        }
        .site-footer {
            background-color: #091221;
            border-top: 1px solid #1e3a5c;
            padding: 50px 0 30px;
            margin-top: 60px;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-links a {
            color: #90cdf4;
        }
        friend-link {
            display: block;
            text-align: center;
            margin: 20px 0;
            font-size: 1.1rem;
        }
        friend-link a {
            color: #4dabf7;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            color: #718096;
            font-size: 0.9rem;
            border-top: 1px solid #2a4365;
            padding-top: 20px;
            width: 100%;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: rgba(12, 26, 45, 0.98);
                padding: 20px;
                border-top: 1px solid #1e3a5c;
                z-index: 999;
            }
            .main-nav.active ul {
                display: flex;
            }
            .hamburger.active span:nth-child(1) {
                transform: rotate(45deg) translate(5px, 5px);
            }
            .hamburger.active span:nth-child(2) {
                opacity: 0;
            }
            .hamburger.active span:nth-child(3) {
                transform: rotate(-45deg) translate(7px, -6px);
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .article-content {
                padding: 25px;
            }
            .search-form {
                flex-direction: column;
            }
        }