* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
            max-width: 1600px;
            margin: 0 auto;
            padding: 0 15px;
        }
        a {
            color: #1a73e8;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #0d47a1;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        .flex {
            display: flex;
            flex-wrap: wrap;
        }
        .grid {
            display: grid;
            gap: 20px;
        }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 0.5rem; }
        .mb-2 { margin-bottom: 1rem; }
        .mb-3 { margin-bottom: 1.5rem; }
        .mb-4 { margin-bottom: 2rem; }
        .p-2 { padding: 1rem; }
        .shadow { box-shadow: 0 4px 12px rgba(0,0,0,0.08); }
        .rounded { border-radius: 8px; }
        .bg-white { background-color: #fff; }
        .site-header {
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            text-transform: uppercase;
            letter-spacing: 2px;
            background: linear-gradient(90deg, #00c9ff 0%, #92fe9d 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            padding: 5px 10px;
            border-radius: 5px;
        }
        .my-logo:hover {
            transform: scale(1.03);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.5rem;
        }
        .main-nav a {
            color: #e0e0e0;
            font-weight: 500;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
        }
        .main-nav a:hover {
            color: #fff;
            background-color: rgba(255,255,255,0.15);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #f1f3f4;
            margin-bottom: 2rem;
            font-size: 0.9rem;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin: 0 10px;
            color: #666;
        }
        .breadcrumb a {
            color: #555;
        }
        .content-area {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 30px;
            margin: 2rem 0;
        }
        @media (max-width: 992px) {
            .content-area {
                grid-template-columns: 1fr;
            }
        }
        .main-content {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.05);
        }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        h1, h2, h3, h4 {
            color: #1a237e;
            margin-top: 1.5em;
            margin-bottom: 0.7em;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            border-bottom: 3px solid #00c853;
            padding-bottom: 0.5rem;
            margin-top: 0;
        }
        h2 {
            font-size: 2rem;
            color: #283593;
            padding-left: 10px;
            border-left: 5px solid #ff9800;
        }
        h3 {
            font-size: 1.6rem;
            color: #3949ab;
        }
        h4 {
            font-size: 1.3rem;
            color: #5c6bc0;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            color: #555;
            font-weight: 500;
            padding: 1rem;
            background-color: #e8f5e9;
            border-radius: 8px;
            border-left: 4px solid #4caf50;
        }
        .highlight {
            background-color: #fff9c4;
            padding: 0.2rem 0.5rem;
            border-radius: 3px;
            font-weight: 600;
        }
        blockquote {
            border-left: 5px solid #2196f3;
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #555;
            background-color: #f5f5f5;
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        .feature-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 10px;
            margin: 2rem auto;
            border: 5px solid #e0e0e0;
        }
        .search-box, .comment-form, .rating-form {
            background: #f5f5f5;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #444;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #1a73e8;
            box-shadow: 0 0 0 3px rgba(26,115,232,0.2);
        }
        button, .btn {
            background: linear-gradient(90deg, #1a73e8, #0d47a1);
            color: white;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-block;
        }
        button:hover, .btn:hover {
            background: linear-gradient(90deg, #0d47a1, #1a73e8);
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(13,71,161,0.3);
            text-decoration: none;
        }
        .stars {
            display: flex;
            gap: 10px;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        .related-links {
            background: #e3f2fd;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .related-links h3 {
            margin-top: 0;
        }
        .links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
        }
        .link-card {
            background: white;
            padding: 1rem;
            border-radius: 8px;
            border-left: 4px solid #2196f3;
            transition: transform 0.3s;
        }
        .link-card:hover {
            transform: translateX(5px);
        }
        .site-footer {
            background: #1a237e;
            color: #eee;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
            border-radius: 12px 12px 0 0;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: #bbdefb;
            border-bottom: 2px solid #3949ab;
            padding-bottom: 0.5rem;
        }
        .footer-links {
            list-style: none;
            margin-top: 1rem;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #c5cae9;
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: #0d47a1;
            padding: 1rem;
            border-radius: 8px;
            margin: 1rem 0;
            text-align: center;
            font-weight: bold;
        }
        friend-link a {
            color: white;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #3949ab;
            color: #90a4ae;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .main-nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(30, 60, 114, 0.98);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                border-radius: 0 0 12px 12px;
            }
            .main-nav.active ul {
                display: flex;
            }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .main-content, .sidebar {
                padding: 1.5rem;
            }
            .content-area {
                gap: 20px;
            }
        }
        @media print {
            .site-header, .breadcrumb, .sidebar, .search-box,
            .comment-form, .rating-form, .site-footer {
                display: none;
            }
            body {
                background: white;
                color: black;
            }
            .main-content {
                box-shadow: none;
                padding: 0;
            }
            a {
                color: black;
                text-decoration: underline;
            }
        }