:root {
            --primary: #1e88e5;
            --secondary: #43a047;
            --accent: #ff9800;
            --light: #f5f5f5;
            --dark: #212121;
            --text: #333;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--text);
            background: linear-gradient(135deg, #e3f2fd 0%, #f1f8e9 100%);
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: var(--dark);
            color: white;
            padding: 15px 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 2px;
            font-style: italic;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .my-logo:hover {
            color: white;
            text-decoration: none;
        }
        .nav-desktop {
            display: flex;
            gap: 25px;
        }
        .nav-desktop a {
            color: white;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: var(--radius);
        }
        .nav-desktop a:hover {
            background: var(--primary);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--accent);
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: var(--dark);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 20px;
            box-shadow: var(--shadow);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: white;
            padding: 12px;
            border-bottom: 1px solid #444;
        }
        .nav-mobile a:hover {
            background: var(--primary);
        }
        .breadcrumb {
            padding: 15px 0;
            background: var(--light);
            border-bottom: 1px solid #ddd;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--dark);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 30px 0;
        }
        @media (max-width: 768px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 30px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .sidebar {
            background: white;
            padding: 25px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 20px;
            line-height: 1.3;
        }
        h2 {
            font-size: 2rem;
            color: var(--secondary);
            margin: 30px 0 15px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--accent);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--primary);
            margin: 25px 0 12px;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--dark);
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
            font-size: 1.05rem;
        }
        .highlight {
            background: #fff9c4;
            padding: 15px;
            border-left: 5px solid var(--accent);
            margin: 20px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .featured-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--radius);
            margin: 25px auto;
            display: block;
            box-shadow: var(--shadow);
            transition: transform 0.5s ease;
        }
        .featured-img:hover {
            transform: scale(1.02);
        }
        .link-list {
            list-style: none;
            padding: 20px;
            background: #e8f5e9;
            border-radius: var(--radius);
            margin: 25px 0;
        }
        .link-list li {
            margin: 10px 0;
            padding-left: 20px;
            position: relative;
        }
        .link-list li:before {
            content: '🐾';
            position: absolute;
            left: 0;
        }
        .interactive-section {
            background: #f3e5f5;
            padding: 25px;
            border-radius: var(--radius);
            margin: 30px 0;
            text-align: center;
        }
        .form-group {
            margin-bottom: 20px;
            text-align: left;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 12px;
            border: 2px solid #ccc;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            border-color: var(--primary);
            outline: none;
        }
        button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: var(--radius);
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            font-weight: bold;
        }
        button:hover {
            background: var(--secondary);
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.2);
        }
        .rating {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin: 15px 0;
        }
        .rating i {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating i:hover, .rating i.active {
            color: #ffc107;
        }
        .update-time {
            font-size: 0.9rem;
            color: #666;
            text-align: right;
            margin-top: 20px;
            font-style: italic;
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 40px 0 20px;
            margin-top: 40px;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 30px;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h3 {
            color: var(--accent);
            margin-bottom: 20px;
        }
        friend-link {
            display: block;
            margin: 10px 0;
            padding: 8px;
            background: #37474f;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        friend-link:hover {
            background: var(--primary);
            padding-left: 15px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #444;
            margin-top: 30px;
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            .nav-desktop { display: none; }
            .hamburger { display: block; }
        }
        @media (max-width: 576px) {
            .article-content, .sidebar { padding: 20px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
        }