:root {
            --primary: #0056b3; 
            --secondary: #dc3545; 
            --accent: #ffc107; 
            --dark: #212529;
            --light: #f8f9fa;
            --gray: #6c757d;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --border-radius: 8px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            color: var(--dark);
            background-color: #fff;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
            color: white;
            padding: 1.5rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            color: white;
            font-size: 1.8rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--accent);
        }
        .logo-text {
            background: linear-gradient(to right, #fff, var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
        }
        .nav-desktop a:hover,
        .nav-desktop a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: var(--accent);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            position: fixed;
            top: 80px;
            left: 0;
            width: 100%;
            background-color: var(--dark);
            flex-direction: column;
            padding: 2rem;
            gap: 1.5rem;
            transform: translateY(-100%);
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow);
            z-index: 999;
        }
        .nav-mobile.active {
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
            display: flex;
        }
        .nav-mobile a {
            color: white;
            font-size: 1.2rem;
            padding: 0.8rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: var(--light);
            font-size: 0.9rem;
            border-bottom: 1px solid #eee;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            margin: 0 10px;
            color: var(--gray);
        }
        main {
            padding: 3rem 0;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 3px solid var(--accent);
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: var(--dark);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        @media (max-width: 768px) {
            .article-header h1 {
                font-size: 2.2rem;
            }
        }
        .meta-info {
            display: flex;
            justify-content: center;
            gap: 2rem;
            color: var(--gray);
            font-size: 0.95rem;
            flex-wrap: wrap;
        }
        .meta-info i {
            margin-right: 5px;
        }
        .content-section {
            margin-bottom: 3rem;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed var(--accent);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--dark);
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight-box {
            background: linear-gradient(to right, var(--light), #e9f5ff);
            border-left: 5px solid var(--primary);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            box-shadow: var(--shadow);
        }
        .highlight-box h4 {
            color: var(--primary);
            margin-bottom: 0.5rem;
            font-size: 1.3rem;
        }
        .featured-image {
            margin: 2.5rem 0;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image figcaption {
            text-align: center;
            font-style: italic;
            padding: 0.8rem;
            background-color: var(--light);
            color: var(--gray);
            font-size: 0.95rem;
        }
        ul, ol {
            padding-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.8rem;
        }
        .interactive-cta {
            background: linear-gradient(135deg, var(--primary), #0077e6);
            color: white;
            text-align: center;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
            box-shadow: var(--shadow);
        }
        .interactive-cta h3 {
            color: white;
            margin-bottom: 1rem;
        }
        .cta-button {
            display: inline-block;
            background-color: var(--accent);
            color: var(--dark);
            padding: 1rem 2.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            margin-top: 1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .cta-button:hover {
            background-color: #ffd54f;
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
        }
        .form-container {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 2rem;
            box-shadow: var(--shadow);
            margin-top: 2rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }
        input, select, textarea {
            width: 100%;
            padding: 0.9rem;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, select:focus, textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.1);
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            direction: rtl;
            justify-content: center;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label {
            color: var(--accent);
        }
        footer {
            background-color: var(--dark);
            color: #ccc;
            padding: 3rem 0 1.5rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        .footer-logo a {
            color: white;
        }
        .footer-heading {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--primary);
        }
        .friend-links {
            list-style: none;
            padding-left: 0;
        }
        .friend-links li {
            margin-bottom: 0.8rem;
        }
        .friend-links a {
            color: #ccc;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .friend-links a:hover {
            color: var(--accent);
            transform: translateX(5px);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #999;
        }
        .text-center { text-align: center; }
        .mb-2 { margin-bottom: 2rem; }
        .mt-2 { margin-top: 2rem; }
        .bold { font-weight: 700; }
        .primary-color { color: var(--primary); }
        .emoji { font-size: 1.2em; }