* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary-blue: #1a365d;
            --secondary-blue: #2d6fc1;
            --accent-yellow: #f6ad55;
            --light-bg: #f7fafc;
            --dark-text: #2d3748;
            --light-text: #e2e8f0;
            --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--light-bg);
            color: var(--dark-text);
            line-height: 1.7;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            color: var(--secondary-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-yellow);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background: var(--secondary-blue);
            color: white;
            border-radius: 6px;
            border: none;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn:hover {
            background: var(--primary-blue);
            transform: translateY(-2px);
            text-decoration: none;
        }
        .section-padding {
            padding: 60px 0;
        }
        .text-center {
            text-align: center;
        }
        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        .site-header {
            background-color: var(--primary-blue);
            color: white;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--accent-yellow);
            letter-spacing: -1px;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            color: var(--light-text);
            font-weight: 600;
            font-size: 1.05rem;
            padding: 5px 0;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--accent-yellow);
            text-decoration: none;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent-yellow);
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 5px;
        }
        .breadcrumb {
            background-color: #edf2f7;
            padding: 12px 20px;
            font-size: 0.9rem;
            border-bottom: 1px solid #cbd5e0;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin: 0 10px;
            color: #a0aec0;
        }
        .hero {
            background: linear-gradient(rgba(26, 54, 93, 0.9), rgba(26, 54, 93, 0.8)), url('https://images.unsplash.com/photo-1533105079780-92b9be482077?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            color: white;
            padding: 80px 20px;
            text-align: center;
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            line-height: 1.2;
            text-shadow: 2px 2px 5px rgba(0,0,0,0.5);
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 30px;
            opacity: 0.95;
        }
        .search-box {
            max-width: 600px;
            margin: 40px auto 20px;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 5px 20px rgba(0,0,0,0.2);
        }
        .search-box input {
            flex-grow: 1;
            padding: 18px 25px;
            border: none;
            font-size: 1.1rem;
        }
        .search-box button {
            background: var(--accent-yellow);
            color: var(--primary-blue);
            padding: 0 35px;
            border: none;
            font-weight: bold;
            cursor: pointer;
            font-size: 1.1rem;
        }
        .search-box button:hover {
            background: #ffc278;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 20px;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 40px;
            border-radius: 12px;
            box-shadow: var(--card-shadow);
        }
        .article-content h1,
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: var(--primary-blue);
            margin-top: 2em;
            margin-bottom: 0.8em;
            line-height: 1.3;
        }
        .article-content h1 {
            font-size: 2.8rem;
            border-bottom: 3px solid var(--accent-yellow);
            padding-bottom: 15px;
            margin-top: 0;
        }
        .article-content h2 {
            font-size: 2.2rem;
            padding-left: 15px;
            border-left: 5px solid var(--secondary-blue);
        }
        .article-content h3 {
            font-size: 1.8rem;
        }
        .article-content h4 {
            font-size: 1.5rem;
            color: var(--dark-text);
        }
        .article-content p {
            margin-bottom: 1.5em;
            font-size: 1.1rem;
            text-align: justify;
        }
        .article-content strong {
            color: var(--primary-blue);
            font-weight: 700;
        }
        .article-content em {
            color: #555;
        }
        .article-content blockquote {
            border-left: 4px solid var(--accent-yellow);
            padding-left: 25px;
            margin: 2em 0;
            font-style: italic;
            color: #555;
            background: #fff9f0;
            padding: 25px;
            border-radius: 0 8px 8px 0;
        }
        .article-content img.float-right {
            float: right;
            margin: 15px 0 15px 25px;
            max-width: 45%;
            border-radius: 8px;
        }
        .clearfix::after {
            content: "";
            clear: both;
            display: table;
        }
        .info-box {
            background: #e6f2ff;
            border: 1px solid #b3d9ff;
            padding: 25px;
            border-radius: 10px;
            margin: 2em 0;
        }
        .info-box h3 {
            margin-top: 0;
            color: #004085;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: 10px;
            box-shadow: var(--card-shadow);
        }
        .sidebar-widget h3 {
            color: var(--primary-blue);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #eee;
        }
        .rating-widget .stars {
            font-size: 2rem;
            color: #ffc107;
            margin-bottom: 15px;
        }
        .rating-widget form,
        .comment-widget form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .rating-widget select,
        .rating-widget input,
        .rating-widget textarea,
        .comment-widget input,
        .comment-widget textarea {
            padding: 12px;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
        }
        .site-footer {
            background-color: var(--primary-blue);
            color: var(--light-text);
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: var(--accent-yellow);
            margin-bottom: 25px;
            font-size: 1.4rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 15px;
            border-radius: 6px;
            margin-bottom: 10px;
            border-left: 4px solid var(--accent-yellow);
        }
        .copyright {
            text-align: center;
            padding-top: 25px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #a0aec0;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 80%;
                height: calc(100vh - 80px);
                background-color: var(--primary-blue);
                flex-direction: column;
                padding: 30px;
                transition: left 0.4s ease;
                box-shadow: 5px 0 15px rgba(0,0,0,0.2);
                z-index: 999;
            }
            .main-nav.active {
                left: 0;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 20px;
            }
            .hero h1 {
                font-size: 2.5rem;
            }
            .hero p {
                font-size: 1.1rem;
            }
            .article-content {
                padding: 25px;
            }
            .article-content h1 {
                font-size: 2.2rem;
            }
            .article-content h2 {
                font-size: 1.8rem;
            }
            .main-content {
                padding: 20px 15px;
                gap: 30px;
            }
        }
        @media print {
            .site-header, .search-box, .sidebar, .site-footer, .breadcrumb {
                display: none;
            }
            .main-content {
                grid-template-columns: 1fr;
                padding: 0;
            }
            .article-content {
                box-shadow: none;
                padding: 0;
            }
        }