:root {
            --primary: #FF9800;
            --secondary: #2196F3;
            --dark: #333;
            --light: #f8f9fa;
            --gray: #6c757d;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.8;
            overflow-x: hidden;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--dark), #000);
            color: white;
            padding: 15px 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            text-transform: uppercase;
            letter-spacing: 2px;
            background: linear-gradient(to right, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        nav ul li a {
            color: white;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 12px;
            border-radius: 5px;
        }
        nav ul li a:hover {
            background-color: var(--primary);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #e9ecef;
            font-size: 0.9rem;
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--dark);
        }
        main {
            padding: 30px 0;
            display: grid;
            grid-template-columns: 1fr;
            gap: 30px;
        }
        article {
            background: white;
            padding: 30px;
            border-radius: 15px;
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 3rem;
            color: var(--dark);
            margin-bottom: 20px;
            text-align: center;
            line-height: 1.2;
        }
        h2 {
            font-size: 2.2rem;
            color: var(--secondary);
            margin: 30px 0 15px;
            border-left: 5px solid var(--primary);
            padding-left: 15px;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--dark);
            margin: 25px 0 12px;
        }
        h4 {
            font-size: 1.4rem;
            color: var(--gray);
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        strong {
            color: var(--primary);
            font-weight: 800;
        }
        .emoji {
            font-size: 1.2rem;
            margin-right: 5px;
        }
        .image-container {
            text-align: center;
            margin: 30px 0;
        }
        .featured-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            transition: transform 0.5s ease;
        }
        .featured-img:hover {
            transform: scale(1.02);
        }
        .internal-links {
            background-color: #f1f8ff;
            padding: 20px;
            border-radius: 10px;
            margin: 25px 0;
            border-left: 4px solid var(--secondary);
        }
        .internal-links h3 {
            margin-top: 0;
        }
        .internal-links ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
        }
        .internal-links ul li a {
            display: block;
            padding: 10px;
            background: white;
            border-radius: 5px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        }
        .internal-links ul li a:hover {
            background-color: var(--secondary);
            color: white;
        }
        .form-section {
            margin: 40px 0;
            padding: 25px;
            background: #f8f9fa;
            border-radius: 10px;
            border: 1px solid #dee2e6;
        }
        .form-section h3 {
            margin-top: 0;
        }
        form {
            display: grid;
            gap: 20px;
        }
        input, textarea, select {
            width: 100%;
            padding: 12px;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--secondary);
            box-shadow: 0 0 8px rgba(33, 150, 243, 0.3);
        }
        button {
            background: linear-gradient(to right, var(--primary), var(--secondary));
            color: white;
            border: none;
            padding: 14px 24px;
            font-size: 1.1rem;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 700;
            transition: var(--transition);
            justify-self: start;
        }
        button:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(255, 152, 0, 0.4);
        }
        .rating {
            display: flex;
            gap: 10px;
            align-items: center;
        }
        .rating i {
            color: #ffc107;
            cursor: pointer;
            font-size: 1.5rem;
            transition: var(--transition);
        }
        .rating i:hover {
            transform: scale(1.2);
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 40px 0 20px;
            margin-top: 50px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }
        .footer-section h3 {
            color: var(--primary);
            margin-bottom: 20px;
            font-size: 1.5rem;
        }
        friend-link {
            display: block;
            padding: 10px 0;
            border-bottom: 1px solid #444;
        }
        friend-link a {
            color: #ccc;
        }
        friend-link a:hover {
            color: white;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            margin-top: 30px;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #aaa;
        }
        .update-time {
            font-style: italic;
            color: var(--gray);
            text-align: right;
            margin-bottom: 20px;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            nav ul { gap: 15px; }
        }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: var(--dark);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 20px;
                box-shadow: var(--shadow);
            }
            nav ul.active {
                display: flex;
            }
            .hamburger { display: block; }
            .internal-links ul {
                grid-template-columns: 1fr;
            }
            article { padding: 20px; }
        }
        @media (max-width: 576px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            .container { padding: 0 15px; }
            button { width: 100%; }
        }
        .highlight {
            background: linear-gradient(120deg, #ffef78 0%, #ffef78 100%);
            background-repeat: no-repeat;
            background-size: 100% 0.4em;
            background-position: 0 88%;
            transition: background-size 0.3s ease;
        }
        .highlight:hover {
            background-size: 100% 100%;
        }
        .tooltip {
            position: relative;
            border-bottom: 1px dotted var(--primary);
            cursor: help;
        }
        .tooltip:hover::after {
            content: attr(data-tooltip);
            position: absolute;
            bottom: 125%;
            left: 50%;
            transform: translateX(-50%);
            background: var(--dark);
            color: white;
            padding: 8px 12px;
            border-radius: 5px;
            font-size: 0.9rem;
            white-space: nowrap;
            z-index: 10;
        }