* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #f5f9fc;
            color: #333;
            line-height: 1.7;
        }
        a {
            text-decoration: none;
            color: #2c5282;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #1a365d;
        }
        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; }
        .py-1 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
        .py-2 { padding-top: 1rem; padding-bottom: 1rem; }
        .py-3 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
        .mt-2 { margin-top: 1rem; }
        .mb-2 { margin-bottom: 1rem; }
        header {
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            color: white;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo span {
            color: #63b3ed;
        }
        .search-form {
            display: flex;
            max-width: 400px;
            width: 100%;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.75rem 1rem;
            border: none;
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-btn {
            background-color: #4299e1;
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-btn:hover {
            background-color: #3182ce;
        }
        nav {
            background-color: #2d3748;
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: relative;
        }
        .main-nav {
            display: flex;
            list-style: none;
        }
        .main-nav li {
            position: relative;
        }
        .main-nav a {
            color: #e2e8f0;
            padding: 1rem 1.5rem;
            display: block;
            font-weight: 500;
        }
        .main-nav a:hover {
            background-color: #4a5568;
            color: white;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #edf2f7;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin: 0 0.5rem;
            color: #718096;
        }
        .breadcrumb a {
            color: #4a5568;
        }
        main {
            padding: 2rem 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
        }
        article {
            background-color: white;
            border-radius: 8px;
            padding: 2.5rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        h1 {
            color: #2d3748;
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #4299e1;
            padding-bottom: 0.5rem;
        }
        h2 {
            color: #2c5282;
            font-size: 2rem;
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px dashed #cbd5e0;
        }
        h3 {
            color: #4a5568;
            font-size: 1.5rem;
            margin: 1.8rem 0 0.8rem;
        }
        h4 {
            color: #718096;
            font-size: 1.2rem;
            margin: 1.5rem 0 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            color: #4a5568;
            background-color: #ebf8ff;
            padding: 1.5rem;
            border-left: 5px solid #4299e1;
            border-radius: 4px;
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #fffacd;
            padding: 0.2rem 0.4rem;
            border-radius: 3px;
        }
        .featured-image {
            margin: 2rem auto;
            text-align: center;
        }
        .featured-image img {
            border-radius: 8px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            border: 1px solid #e2e8f0;
        }
        .image-caption {
            font-style: italic;
            color: #718096;
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .link-list {
            background-color: #f7fafc;
            padding: 1.5rem;
            border-radius: 6px;
            margin: 2rem 0;
        }
        .link-list h3 {
            margin-top: 0;
        }
        .link-list ul {
            columns: 2;
            list-style-position: inside;
        }
        .link-list li {
            margin-bottom: 0.5rem;
            break-inside: avoid;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .sidebar-widget {
            background-color: white;
            border-radius: 8px;
            padding: 1.5rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .sidebar-widget h3 {
            color: #2d3748;
            font-size: 1.3rem;
            margin-top: 0;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e2e8f0;
        }
        .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        label {
            font-weight: 600;
            margin-bottom: 0.3rem;
            color: #4a5568;
        }
        input, textarea, select {
            padding: 0.75rem;
            border: 1px solid #cbd5e0;
            border-radius: 4px;
            font-size: 1rem;
        }
        textarea {
            min-height: 120px;
            resize: vertical;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #e2e8f0;
            cursor: pointer;
        }
        .stars .star:hover,
        .stars .star.active {
            color: #f6ad55;
        }
        .submit-btn {
            background-color: #38b2ac;
            color: white;
            border: none;
            padding: 0.9rem;
            border-radius: 4px;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.3s;
        }
        .submit-btn:hover {
            background-color: #319795;
        }
        footer {
            background-color: #2d3748;
            color: #cbd5e0;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #fff;
            margin-bottom: 1.2rem;
            font-size: 1.2rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: #a0aec0;
        }
        .footer-links a:hover {
            color: #63b3ed;
        }
        friend-link {
            display: block;
            padding: 0.5rem 0;
            border-bottom: 1px dotted #4a5568;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a5568;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                gap: 1rem;
            }
            .search-form {
                max-width: 100%;
            }
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                position: absolute;
                top: 100%;
                left: 0;
                background-color: #2d3748;
                z-index: 1000;
            }
            .main-nav.active {
                display: flex;
            }
            .main-nav a {
                padding: 1rem;
                border-bottom: 1px solid #4a5568;
            }
            .nav-container {
                flex-wrap: wrap;
            }
            h1 {
                font-size: 2.2rem;
            }
            article {
                padding: 1.5rem;
            }
            .link-list ul {
                columns: 1;
            }
        }
        @media (max-width: 576px) {
            .footer-content {
                grid-template-columns: 1fr;
            }
        }