* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        h1, h2, h3, h4 {
            font-family: 'Arial Black', Gadget, sans-serif;
            color: #1a237e;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            margin-top: 1.5rem;
            border-bottom: 5px solid #ff5722;
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2.2rem;
            margin-top: 2.5rem;
            padding-left: 15px;
            border-left: 8px solid #4CAF50;
        }
        h3 {
            font-size: 1.8rem;
            margin-top: 2rem;
            color: #303f9f;
        }
        h4 {
            font-size: 1.4rem;
            margin-top: 1.5rem;
            color: #5c6bc0;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        strong {
            color: #d32f2f;
            font-weight: 700;
        }
        em {
            color: #388e3c;
            font-style: italic;
        }
        a {
            color: #1e88e5;
            text-decoration: none;
            transition: color 0.3s ease, background-color 0.3s ease;
        }
        a:hover {
            color: #ff5722;
            text-decoration: underline;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.7rem;
        }
        blockquote {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            border-left: 8px solid #9c27b0;
            padding: 25px;
            margin: 2rem 0;
            border-radius: 0 15px 15px 0;
            font-size: 1.2rem;
            font-style: italic;
            box-shadow: 0 4px 8px rgba(0,0,0,0.05);
        }
        .site-header {
            background: linear-gradient(135deg, #1a237e 0%, #283593 50%, #303f9f 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            color: #ffeb3b;
            text-decoration: none;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: #ff5722;
        }
        .my-logo:hover {
            color: #ffcc80;
        }
        .breadcrumb {
            background-color: #e8eaf6;
            padding: 12px 20px;
            border-radius: 8px;
            margin: 15px 0;
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: #5c6bc0;
        }
        .breadcrumb a:hover {
            color: #ff5722;
        }
        .breadcrumb .separator {
            margin: 0 10px;
            color: #9e9e9e;
        }
        .main-nav {
            display: flex;
            align-items: center;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .nav-list a {
            color: white;
            font-weight: 600;
            padding: 10px 15px;
            border-radius: 6px;
            display: block;
            transition: all 0.3s;
        }
        .nav-list a:hover, .nav-list a.active {
            background-color: rgba(255, 87, 34, 0.9);
            color: white;
            text-decoration: none;
            transform: translateY(-3px);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 10px;
        }
        .search-section {
            background: linear-gradient(to right, #e8f5e9, #f1f8e9);
            padding: 30px 0;
            margin: 30px 0;
            border-radius: 15px;
            text-align: center;
            box-shadow: inset 0 0 15px rgba(0,128,0,0.1);
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0,100,0,0.2);
        }
        .search-input {
            flex-grow: 1;
            padding: 18px 25px;
            border: none;
            font-size: 1.1rem;
            outline: none;
        }
        .search-btn {
            background: linear-gradient(to right, #4CAF50, #2e7d32);
            color: white;
            border: none;
            padding: 0 30px;
            font-size: 1.2rem;
            cursor: pointer;
            transition: all 0.3s;
        }
        .search-btn:hover {
            background: linear-gradient(to right, #388e3c, #1b5e20);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 40px 0;
        }
        .article-content {
            background-color: white;
            padding: 40px;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }
        .sidebar {
            background-color: white;
            padding: 25px;
            border-radius: 15px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.06);
            align-self: start;
        }
        .article-image {
            width: 100%;
            height: auto;
            border-radius: 15px;
            margin: 25px 0;
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
            transition: transform 0.5s ease;
            display: block;
        }
        .article-image:hover {
            transform: scale(1.02);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: -15px;
            margin-bottom: 25px;
            font-size: 0.95rem;
        }
        .internal-link {
            background-color: #f3f3f3;
            padding: 15px 20px;
            margin: 20px 0;
            border-radius: 10px;
            border-left: 5px solid #ff9800;
        }
        .internal-link h4 {
            margin-top: 0;
            color: #ff9800;
        }
        .internal-link ul {
            list-style: none;
            margin-left: 0;
        }
        .internal-link li {
            padding: 8px 0;
            border-bottom: 1px dashed #ddd;
        }
        .user-interaction {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            padding: 30px;
            border-radius: 15px;
            margin: 40px 0;
            border: 2px solid #bbdefb;
        }
        .interaction-form {
            display: grid;
            gap: 20px;
            margin-top: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 8px;
            font-weight: 600;
            color: #1565c0;
        }
        .form-input, .form-textarea {
            padding: 15px;
            border: 2px solid #90caf9;
            border-radius: 10px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .form-input:focus, .form-textarea:focus {
            border-color: #ff5722;
            outline: none;
            box-shadow: 0 0 0 3px rgba(255,87,34,0.2);
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
        }
        .rating-stars .star:hover,
        .rating-stars .star.active {
            color: #ffc107;
        }
        .submit-btn {
            background: linear-gradient(to right, #ff5722, #e64a19);
            color: white;
            border: none;
            padding: 18px;
            border-radius: 10px;
            font-size: 1.2rem;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
            margin-top: 10px;
        }
        .submit-btn:hover {
            background: linear-gradient(to right, #f4511e, #d84315);
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(244,81,30,0.4);
        }
        .sidebar-widget {
            margin-bottom: 35px;
            padding-bottom: 25px;
            border-bottom: 2px dashed #e0e0e0;
        }
        .sidebar-widget:last-child {
            border-bottom: none;
        }
        .sidebar-title {
            font-size: 1.5rem;
            color: #1a237e;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 3px solid #4CAF50;
        }
        .popular-links a {
            display: block;
            padding: 15px;
            background-color: #f5f5f5;
            margin-bottom: 10px;
            border-radius: 8px;
            transition: all 0.3s;
            color: #333;
        }
        .popular-links a:hover {
            background-color: #e3f2fd;
            color: #1e88e5;
            transform: translateX(10px);
        }
        .update-time {
            background-color: #fff8e1;
            padding: 20px;
            border-radius: 10px;
            text-align: center;
            border: 2px solid #ffd54f;
        }
        .update-time i {
            color: #ff8f00;
            margin-right: 10px;
        }
        .site-footer {
            background: linear-gradient(135deg, #263238 0%, #37474f 100%);
            color: #cfd8dc;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 900;
            color: #ffcc80;
            margin-bottom: 20px;
        }
        .footer-heading {
            color: #bbdefb;
            font-size: 1.4rem;
            margin-bottom: 25px;
            padding-bottom: 10px;
            border-bottom: 2px solid #546e7a;
        }
        friend-link {
            display: block;
            padding: 12px 0;
            border-bottom: 1px dotted #546e7a;
            color: #90caf9;
        }
        friend-link:last-child {
            border-bottom: none;
        }
        friend-link:hover {
            color: #ffcc80;
            padding-left: 10px;
        }
        .copyright {
            text-align: center;
            padding-top: 25px;
            border-top: 1px solid #546e7a;
            font-size: 0.95rem;
            color: #b0bec5;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            h4 { font-size: 1.3rem; }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-list {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: #1a237e;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.2);
                border-top: 3px solid #ff5722;
            }
            .nav-list.active {
                display: flex;
            }
            .nav-list li {
                width: 100%;
            }
            .nav-list a {
                padding: 15px;
                border-radius: 5px;
                text-align: center;
            }
            .header-container {
                flex-direction: column;
                align-items: stretch;
            }
            .my-logo {
                justify-content: center;
                margin-bottom: 15px;
            }
            .search-form {
                flex-direction: column;
                border-radius: 15px;
            }
            .search-input, .search-btn {
                border-radius: 0;
                width: 100%;
            }
            .article-content {
                padding: 25px;
            }
        }
        @media (max-width: 480px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .container {
                padding: 0 15px;
            }
            .article-content, .sidebar {
                padding: 20px;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .article-content, .sidebar, .search-section, .user-interaction {
            animation: fadeIn 0.8s ease-out;
        }
        .highlight-box {
            background: linear-gradient(135deg, #e1f5fe 0%, #fce4ec 100%);
            border: 2px solid #4fc3f7;
            padding: 25px;
            border-radius: 15px;
            margin: 30px 0;
            position: relative;
            overflow: hidden;
        }
        .highlight-box:before {
            content: '🔥';
            position: absolute;
            top: 10px;
            right: 10px;
            font-size: 2rem;
            opacity: 0.2;
        }