* {
            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: 1.6;
            color: #333;
            background-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            color: #2c5aa0;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #e74c3c;
        }
        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, #1a237e 0%, #283593 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-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #ffd700, #ffec8b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo a {
            background: none;
            -webkit-text-fill-color: initial;
            color: transparent;
        }
        .main-nav {
            display: flex;
            gap: 2rem;
        }
        .main-nav a {
            color: #e3f2fd;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            color: #ffd700;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #ffd700;
            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;
        }
        .breadcrumb {
            background-color: #e8eaf6;
            padding: 0.8rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #5c6bc0;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: #777;
            margin: 0 5px;
        }
        .search-container {
            background: #e3f2fd;
            padding: 1.5rem 0;
            margin-bottom: 2rem;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
        }
        .search-input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1rem;
        }
        .search-button {
            background: #1a237e;
            color: white;
            border: none;
            padding: 0 1.8rem;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s ease;
        }
        .search-button:hover {
            background: #283593;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
        }
        .article-header {
            margin-bottom: 2rem;
            border-bottom: 2px solid #e8eaf6;
            padding-bottom: 1.5rem;
        }
        h1 {
            font-size: 2.5rem;
            color: #1a237e;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .meta-info {
            color: #666;
            font-size: 0.9rem;
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin-top: 1rem;
        }
        .meta-info i {
            margin-right: 5px;
            color: #5c6bc0;
        }
        h2 {
            font-size: 1.8rem;
            color: #283593;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px dashed #c5cae9;
        }
        h3 {
            font-size: 1.4rem;
            color: #3949ab;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.2rem;
            color: #5c6bc0;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 500;
            color: #444;
            background: #f3f5fd;
            padding: 1.2rem;
            border-left: 4px solid #5c6bc0;
            border-radius: 0 8px 8px 0;
            margin-bottom: 2rem;
        }
        .highlight {
            background: linear-gradient(120deg, #e1f5fe 0%, #f3e5f5 100%);
            padding: 1.5rem;
            border-radius: 10px;
            border: 1px solid #d1c4e9;
            margin: 1.5rem 0;
        }
        .highlight strong {
            color: #7b1fa2;
        }
        .content-image {
            margin: 2rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
            max-width: 800px;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        ul, ol {
            margin-left: 1.8rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        .tip-box {
            background: #e8f5e9;
            border-left: 5px solid #4caf50;
            padding: 1.2rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .warning-box {
            background: #fff3e0;
            border-left: 5px solid #ff9800;
            padding: 1.2rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .link-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .link-item {
            background: #f5f7ff;
            padding: 1rem;
            border-radius: 8px;
            border: 1px solid #e0e0e0;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .link-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.08);
            border-color: #5c6bc0;
        }
        .sidebar {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            margin-bottom: 2rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid #eee;
        }
        .sidebar-widget:last-child {
            border-bottom: none;
        }
        .sidebar h3 {
            font-size: 1.3rem;
            color: #1a237e;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e8eaf6;
        }
        .popular-links li {
            margin-bottom: 0.8rem;
            padding-left: 0.5rem;
            border-left: 3px solid transparent;
            transition: all 0.3s ease;
        }
        .popular-links li:hover {
            border-left-color: #5c6bc0;
            padding-left: 1rem;
        }
        .interactive-section {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            margin-top: 2.5rem;
        }
        .rating-container {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            margin-bottom: 2rem;
            flex-wrap: wrap;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #ffd700;
        }
        .star-rating i {
            cursor: pointer;
            transition: transform 0.2s ease;
        }
        .star-rating i:hover {
            transform: scale(1.2);
        }
        .comment-form, .rating-form {
            margin-top: 1.5rem;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #444;
        }
        input[type="text"],
        input[type="email"],
        textarea {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        input[type="text"]:focus,
        input[type="email"]:focus,
        textarea:focus {
            outline: none;
            border-color: #5c6bc0;
            box-shadow: 0 0 0 3px rgba(92, 107, 192, 0.1);
        }
        textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-button {
            background: linear-gradient(135deg, #1a237e 0%, #283593 100%);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .submit-button:hover {
            background: linear-gradient(135deg, #283593 0%, #3949ab 100%);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(26, 35, 126, 0.3);
        }
        .site-footer {
            background: #1a237e;
            color: #e3f2fd;
            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;
        }
        .footer-widget h4 {
            color: #ffd700;
            font-size: 1.2rem;
            margin-bottom: 1.2rem;
        }
        .footer-links li {
            margin-bottom: 0.6rem;
        }
        .footer-links a {
            color: #bbdefb;
        }
        .footer-links a:hover {
            color: #ffd700;
            padding-left: 5px;
            display: inline-block;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 1rem;
            border-radius: 6px;
            margin-bottom: 0.8rem;
            border-left: 4px solid #5c6bc0;
            transition: all 0.3s ease;
        }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateX(5px);
        }
        friend-link a {
            color: #ffec8b;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #3949ab;
            font-size: 0.9rem;
            color: #90caf9;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #1a237e;
                padding: 1rem;
                box-shadow: 0 10px 20px rgba(0,0,0,0.2);
            }
            .main-nav.active {
                display: flex;
            }
            .main-nav a {
                padding: 0.8rem;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            h1 {
                font-size: 2rem;
            }
            article, .sidebar, .interactive-section {
                padding: 1.5rem;
            }
            .main-content {
                gap: 1.5rem;
            }
        }