* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background-color: #f5f5f5;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            color: #c0392b;
            text-decoration: none;
            transition: color 0.3s ease, border-bottom 0.3s ease;
        }
        a:hover {
            color: #e74c3c;
            border-bottom: 2px solid #e74c3c;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .site-header {
            background: linear-gradient(135deg, #2c3e50 0%, #1a1a2e 100%);
            color: #ecf0f1;
            padding: 1rem 2rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
        }
        .my-logo {
            font-family: 'Impact', 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: bold;
            letter-spacing: 1.5px;
            background: linear-gradient(90deg, #e74c3c, #f1c40f);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
        }
        .my-logo a {
            color: inherit;
            -webkit-text-fill-color: inherit;
            border-bottom: none;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #bdc3c7;
            font-weight: 600;
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: #f1c40f;
            border-bottom-color: #f1c40f;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #f1c40f;
        }
        .breadcrumb {
            background-color: #34495e;
            color: #bdc3c7;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: #ecf0f1;
        }
        .breadcrumb i {
            margin: 0 0.5rem;
        }
        .container {
            max-width: 1200px;
            margin: 2rem auto;
            background-color: #fff;
            padding: 3rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.08);
        }
        article {
            max-width: 900px;
            margin: 0 auto;
        }
        h1 {
            font-size: 3rem;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            border-left: 6px solid #e74c3c;
            padding-left: 1rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2.2rem;
            color: #34495e;
            margin: 3rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #f1c40f;
        }
        h3 {
            font-size: 1.7rem;
            color: #2c3e50;
            margin: 2.5rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #7f8c8d;
            margin: 2rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.8rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: #555;
            font-weight: 500;
            padding: 1.2rem;
            background-color: #f9f9f9;
            border-left: 4px solid #3498db;
            border-radius: 0 8px 8px 0;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fffacd;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
            border-left: 5px solid #f1c40f;
            font-weight: 600;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .article-img {
            margin: 2.5rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
            max-width: 800px;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 0.8rem;
            background-color: #f8f8f8;
            font-size: 0.95rem;
        }
        .interactive-module {
            background: linear-gradient(145deg, #edf2f7, #e2e8f0);
            padding: 2.5rem;
            border-radius: 12px;
            margin: 3rem 0;
            border: 1px solid #cbd5e0;
        }
        .module-title {
            color: #2d3748;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .module-title i {
            color: #e74c3c;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #4a5568;
        }
        .form-control {
            width: 100%;
            padding: 1rem;
            border: 2px solid #cbd5e0;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .form-control:focus {
            outline: none;
            border-color: #e74c3c;
        }
        .btn {
            background: linear-gradient(to right, #e74c3c, #c0392b);
            color: white;
            padding: 1rem 2rem;
            border: none;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 0.8rem;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(231, 76, 60, 0.3);
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: #f1c40f;
        }
        .site-footer {
            background-color: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 2rem 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        .footer-section h4 {
            color: #f1c40f;
            margin-bottom: 1.5rem;
            font-size: 1.4rem;
        }
        .friend-links {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        friend-link {
            display: block;
            padding: 0.8rem;
            background-color: rgba(255,255,255,0.05);
            border-radius: 6px;
            transition: background-color 0.3s;
        }
        friend-link:hover {
            background-color: rgba(241, 196, 15, 0.1);
        }
        friend-link a {
            color: #bdc3c7;
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #4a6278;
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .container { padding: 2rem; }
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
        }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            .main-nav {
                width: 100%;
                display: none;
                order: 3;
                margin-top: 1rem;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                border-bottom: 1px solid #4a6278;
            }
            .main-nav a {
                display: block;
                padding: 1rem;
            }
            .hamburger {
                display: block;
            }
            .breadcrumb {
                padding: 0.8rem 1rem;
                font-size: 0.85rem;
            }
            .container {
                padding: 1.5rem;
                margin: 1rem;
            }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.8rem; }
            .footer-content {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }