:root {
            --primary-red: #F44336;
            --primary-yellow: #FFEB3B;
            --primary-blue: #2196F3;
            --primary-green: #4CAF50;
            --primary-black: #212121;
            --primary-white: #FAFAFA;
            --shadow-light: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-medium: 0 6px 20px rgba(0,0,0,0.12);
            --border-radius: 12px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--primary-black);
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-red);
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: var(--primary-white);
            box-shadow: var(--shadow-light);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-family: 'Comic Sans MS', cursive, sans-serif;
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--primary-red);
            text-shadow: 3px 3px 0 var(--primary-yellow);
            letter-spacing: -1px;
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
        }
        .my-logo a:hover {
            color: inherit;
            text-decoration: none;
            opacity: 0.9;
        }
        .my-logo span {
            color: var(--primary-blue);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            font-weight: 600;
            color: var(--primary-black);
            padding: 8px 4px;
            border-bottom: 3px solid transparent;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            color: var(--primary-red);
            border-bottom-color: var(--primary-red);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--primary-red);
            cursor: pointer;
        }
        .breadcrumb {
            background: #EDE7F6;
            padding: 12px 0;
            font-size: 0.9rem;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 10px;
            color: #777;
        }
        .search-container {
            background: var(--primary-white);
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-light);
            margin: 30px 0;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-form input {
            flex: 1;
            padding: 15px 20px;
            border: 2px solid #ddd;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-form input:focus {
            border-color: var(--primary-blue);
        }
        .search-form button {
            background: var(--primary-blue);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: #0b7dda;
        }
        main {
            flex: 1;
            padding: 30px 0 50px;
        }
        article {
            background: var(--primary-white);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-light);
            padding: 40px;
            margin-bottom: 40px;
        }
        h1 {
            color: var(--primary-red);
            font-size: 2.8rem;
            margin-bottom: 20px;
            line-height: 1.2;
            border-bottom: 5px solid var(--primary-yellow);
            padding-bottom: 15px;
        }
        h2 {
            color: var(--primary-blue);
            font-size: 2rem;
            margin: 35px 0 20px;
            padding-top: 10px;
        }
        h3 {
            color: var(--primary-green);
            font-size: 1.6rem;
            margin: 28px 0 15px;
        }
        h4 {
            color: #FF9800;
            font-size: 1.3rem;
            margin: 24px 0 12px;
        }
        p {
            margin-bottom: 1.5em;
            text-align: justify;
        }
        .lead {
            font-size: 1.25rem;
            font-weight: 500;
            color: #555;
            background: #E8F5E9;
            padding: 20px;
            border-left: 5px solid var(--primary-green);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            margin: 25px 0;
        }
        .highlight {
            background: linear-gradient(120deg, #FFF9C4 0%, #FFF9C4 100%);
            padding: 3px 6px;
            border-radius: 4px;
            font-weight: 600;
        }
        emoji {
            font-style: normal;
            margin-right: 8px;
        }
        .featured-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-medium);
            display: block;
            margin: 30px auto;
            transition: transform 0.5s ease;
        }
        .featured-image:hover {
            transform: scale(1.01);
        }
        .internal-links {
            background: #E3F2FD;
            padding: 25px;
            border-radius: var(--border-radius);
            margin: 30px 0;
        }
        .internal-links h3 {
            margin-top: 0;
            color: var(--primary-blue);
        }
        .internal-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 12px;
            list-style: none;
        }
        .internal-links li {
            padding: 8px 0;
            border-bottom: 1px dashed #BBDEFB;
        }
        .internal-links li:last-child {
            border-bottom: none;
        }
        .user-interaction {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin: 50px 0;
        }
        .interaction-box {
            background: var(--primary-white);
            border-radius: var(--border-radius);
            padding: 25px;
            box-shadow: var(--shadow-light);
            border-top: 5px solid var(--primary-red);
        }
        .interaction-box h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .interaction-box form {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-top: 20px;
        }
        .interaction-box input,
        .interaction-box textarea,
        .interaction-box select {
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .interaction-box input:focus,
        .interaction-box textarea:focus,
        .interaction-box select:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
        }
        .interaction-box textarea {
            min-height: 120px;
            resize: vertical;
        }
        .interaction-box button {
            background: var(--primary-green);
            color: white;
            border: none;
            padding: 14px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .interaction-box button:hover {
            background: #3d8b40;
        }
        .star-rating {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: #FFD700;
            margin: 15px 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
        }
        .site-footer {
            background: var(--primary-black);
            color: var(--primary-white);
            padding: 50px 0 20px;
            margin-top: auto;
        }
        .footer-content {
            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: var(--primary-yellow);
            margin-bottom: 20px;
        }
        .footer-section h4 {
            color: var(--primary-yellow);
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #ccc;
        }
        .footer-links a:hover {
            color: var(--primary-white);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: #333;
            padding: 15px;
            border-radius: 8px;
            margin: 10px 0;
            border-left: 4px solid var(--primary-blue);
        }
        .copyright {
            text-align: center;
            padding-top: 25px;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            .header-inner { padding: 12px 0; }
            article { padding: 30px; }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                background: var(--primary-white);
                box-shadow: var(--shadow-medium);
                transition: left 0.4s ease;
                z-index: 999;
            }
            .main-nav.active {
                left: 0;
            }
            .main-nav ul {
                flex-direction: column;
                padding: 20px;
                gap: 0;
            }
            .main-nav li {
                width: 100%;
            }
            .main-nav a {
                display: block;
                padding: 15px;
                border-bottom: 1px solid #eee;
            }
            .user-interaction {
                grid-template-columns: 1fr;
            }
            .internal-links ul {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 576px) {
            html { font-size: 15px; }
            .container { padding: 0 15px; }
            h1 { font-size: 2rem; }
            .search-form { flex-direction: column; }
            .search-form input,
            .search-form button {
                border-radius: var(--border-radius);
                width: 100%;
            }
            .search-form input {
                margin-bottom: 10px;
            }
        }