* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a { color: #4a6fa5; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #1e3a8a; }
        img { max-width: 100%; height: auto; display: block; }
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        .text-center { text-align: center; }
        .bold { font-weight: 700; }
        .emoji { font-size: 1.2em; }
        .site-header {
            background: linear-gradient(135deg, #1e3a8a 0%, #4a6fa5 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i { color: #60a5fa; }
        .my-logo:hover { color: #dbeafe; }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
        }
        .nav-desktop a {
            color: #dbeafe;
            font-weight: 500;
        }
        .nav-desktop a:hover {
            color: white;
            text-decoration: underline;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: #1e3a8a;
            padding: 1rem;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            box-shadow: 0 5px 10px rgba(0,0,0,0.2);
        }
        .nav-mobile.active { display: flex; }
        .nav-mobile a {
            color: #dbeafe;
            padding: 0.75rem;
            border-bottom: 1px solid #2d4d9c;
        }
        .nav-mobile a:last-child { border-bottom: none; }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 20px;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #4a6fa5; }
        .breadcrumb span { color: #6c757d; }
        main { padding: 2rem 0; background: white; }
        .article-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .article-grid { grid-template-columns: 1fr; }
        }
        article { max-width: 100%; }
        h1 {
            font-size: 2.8rem;
            color: #1e3a8a;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
        }
        h2 {
            font-size: 2rem;
            color: #2d4d9c;
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e9ecef;
        }
        h3 {
            font-size: 1.5rem;
            color: #3b5998;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.2rem;
            color: #4a6fa5;
            margin: 1.5rem 0 0.75rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            color: #555;
            background: #f1f8ff;
            padding: 1.5rem;
            border-left: 4px solid #4a6fa5;
            border-radius: 0 8px 8px 0;
            margin-bottom: 2.5rem;
        }
        .highlight-box {
            background: linear-gradient(to right, #f0f7ff, #e1effe);
            border: 1px solid #b3d7ff;
            border-radius: 10px;
            padding: 1.5rem;
            margin: 2rem 0;
        }
        .featured-img {
            width: 100%;
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            margin: 2.5rem auto;
            border: 1px solid #dee2e6;
        }
        aside {
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 12px;
            height: fit-content;
            border: 1px solid #dee2e6;
        }
        .widget { margin-bottom: 2.5rem; }
        .widget-title {
            font-size: 1.3rem;
            color: #1e3a8a;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #4a6fa5;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        input, textarea, select {
            padding: 0.85rem;
            border: 1px solid #ced4da;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #4a6fa5;
            box-shadow: 0 0 0 3px rgba(74, 111, 165, 0.2);
        }
        button, .btn {
            background: linear-gradient(to right, #4a6fa5, #3b5998);
            color: white;
            border: none;
            padding: 0.9rem 1.5rem;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        button:hover, .btn:hover {
            background: linear-gradient(to right, #3b5998, #2d4d9c);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(59, 89, 152, 0.3);
        }
        .stars {
            display: flex;
            gap: 5px;
            justify-content: center;
            margin: 1rem 0;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active { color: #ffc107; }
        footer {
            background: #1a202c;
            color: #cbd5e0;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-section h4 {
            color: #e2e8f0;
            margin-bottom: 1.2rem;
        }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 0.75rem; }
        .footer-links a { color: #90cdf4; }
        .footer-links a:hover { color: white; text-decoration: underline; }
        friend-link {
            display: inline-block;
            background: #2d3748;
            padding: 0.5rem 1rem;
            border-radius: 6px;
            margin: 0.3rem;
            color: #90cdf4;
        }
        friend-link:hover { background: #4a5568; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2d3748;
            font-size: 0.9rem;
            color: #a0aec0;
        }
        @media (max-width: 768px) {
            .container { padding: 0 15px; }
            h2 { font-size: 1.7rem; }
            h3 { font-size: 1.3rem; }
            .intro { font-size: 1.1rem; padding: 1.2rem; }
            .footer-content { grid-template-columns: 1fr; }
        }