* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #1e40af;
            --secondary-color: #dc2626;
            --accent-color: #f59e0b;
            --text-dark: #1f2937;
            --text-light: #6b7280;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: var(--bg-light);
            overflow-x: hidden;
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary-color);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-color), #1e3a8a);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--accent-color);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover {
            border-bottom-color: var(--accent-color);
            color: var(--accent-color);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--bg-white);
            padding: 1rem 0;
            border-bottom: 1px solid #e5e7eb;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
        }
        .breadcrumb .separator {
            margin: 0 0.5rem;
            color: var(--text-light);
        }
        .search-section {
            background-color: var(--bg-white);
            padding: 2rem;
            border-radius: var(--radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
            text-align: center;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            gap: 10px;
        }
        .search-form input {
            flex: 1;
            padding: 0.75rem 1rem;
            border: 2px solid #d1d5db;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-form input:focus {
            outline: none;
            border-color: var(--primary-color);
        }
        .search-form button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0.75rem 1.5rem;
            border-radius: var(--radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #1e3a8a;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2.5rem 0;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
        }
        .main-content {
            background-color: var(--bg-white);
            padding: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        h1 {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid var(--accent-color);
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: var(--text-dark);
            margin: 2.5rem 0 1rem;
            padding-top: 1rem;
            border-top: 1px solid #e5e7eb;
        }
        h3 {
            font-size: 1.5rem;
            color: var(--primary-color);
            margin: 2rem 0 0.75rem;
        }
        h4 {
            font-size: 1.2rem;
            color: var(--secondary-color);
            margin: 1.5rem 0 0.5rem;
        }
        p {
            margin-bottom: 1.25rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.25rem;
            color: var(--text-light);
            font-weight: 300;
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #fef3c7;
            border-left: 4px solid var(--accent-color);
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .featured-image {
            margin: 2rem 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            padding: 0.5rem;
            font-size: 0.9rem;
        }
        .link-block {
            background-color: var(--bg-white);
            padding: 1.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin: 1.5rem 0;
            border-left: 4px solid var(--primary-color);
        }
        .link-block h4 {
            margin-top: 0;
            color: var(--primary-color);
        }
        .user-interaction {
            background-color: var(--bg-white);
            padding: 2rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin-top: 2.5rem;
        }
        .rating-form, .comment-form {
            margin-bottom: 2rem;
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.5rem;
            color: #d1d5db;
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label {
            color: var(--accent-color);
        }
        textarea, input[type="text"], input[type="email"] {
            width: 100%;
            padding: 0.75rem;
            margin: 0.5rem 0 1rem;
            border: 1px solid #d1d5db;
            border-radius: var(--radius);
            font-family: inherit;
            transition: var(--transition);
        }
        textarea:focus, input:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
        }
        .form-button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0.75rem 1.5rem;
            border-radius: var(--radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .form-button:hover {
            background-color: #1e3a8a;
        }
        .widget {
            background-color: var(--bg-white);
            padding: 1.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .widget-title {
            font-size: 1.25rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent-color);
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 0.75rem;
            padding-bottom: 0.75rem;
            border-bottom: 1px dashed #e5e7eb;
        }
        .related-links li:last-child {
            border-bottom: none;
        }
        .update-info {
            background-color: #f0f9ff;
            padding: 1rem;
            border-radius: var(--radius);
            font-size: 0.9rem;
            color: var(--text-light);
        }
        .site-footer {
            background-color: var(--text-dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        friend-link {
            display: block;
            margin: 0.5rem 0;
            color: #9ca3af;
        }
        friend-link:hover {
            color: var(--accent-color);
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #374151;
            color: #9ca3af;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav ul {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--primary-color);
                flex-direction: column;
                align-items: center;
                padding: 1rem 0;
                gap: 0;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: var(--transition);
                box-shadow: 0 5px 10px rgba(0,0,0,0.1);
            }
            .main-nav.active ul {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
            .main-nav li {
                width: 100%;
                text-align: center;
            }
            .main-nav a {
                display: block;
                padding: 1rem;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .main-nav a:hover {
                background-color: rgba(255,255,255,0.1);
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.75rem;
            }
            .main-content {
                padding: 1.5rem;
            }
            .search-form {
                flex-direction: column;
            }
        }
        .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; }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .bold {
            font-weight: 700;
            color: var(--text-dark);
        }