* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #e0e0e0;
            background: linear-gradient(135deg, #0a1929 0%, #1a2b3c 100%);
            background-attachment: fixed;
            max-width: 100%;
            overflow-x: hidden;
        }
        a { color: #4dabf7; text-decoration: none; transition: color 0.3s ease, transform 0.2s; }
        a:hover { color: #a5d8ff; transform: translateY(-2px); }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        section { padding: 3rem 0; }
        h1, h2, h3, h4 {
            font-family: 'Georgia', serif;
            color: #f8f9fa;
            margin-bottom: 1.2rem;
            line-height: 1.3;
        }
        h1 { font-size: 3.2rem; border-left: 5px solid #ff6b6b; padding-left: 1rem; margin-top: 1rem; }
        h2 { font-size: 2.5rem; color: #74c0fc; border-bottom: 2px solid #339af0; padding-bottom: 0.5rem; }
        h3 { font-size: 2rem; color: #a5d8ff; }
        h4 { font-size: 1.5rem; color: #d0ebff; }
        p { margin-bottom: 1.5rem; font-size: 1.1rem; }
        ul, ol { margin-bottom: 1.5rem; padding-left: 2rem; }
        li { margin-bottom: 0.5rem; }
        blockquote {
            border-left: 4px solid #ffa94d;
            padding: 1.5rem;
            margin: 2rem 0;
            background: rgba(255, 169, 77, 0.1);
            font-style: italic;
            border-radius: 0 8px 8px 0;
        }
        .highlight { background-color: rgba(255, 215, 0, 0.2); padding: 0.2rem 0.5rem; border-radius: 4px; }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        header {
            background: rgba(10, 25, 41, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid #339af0;
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 1rem 0;
        }
        .header-container { display: flex; justify-content: space-between; align-items: center; }
        .logo a {
            font-family: 'Palatino', serif;
            font-size: 2.8rem;
            font-weight: bold;
            background: linear-gradient(90deg, #ff6b6b, #4dabf7);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }
        .logo a:hover { transform: scale(1.05); }
        nav.desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav.desktop-nav a {
            color: #e9ecef;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 6px;
        }
        nav.desktop-nav a:hover { background: rgba(77, 171, 247, 0.2); }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: #e9ecef;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: rgba(10, 25, 41, 0.98);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            border-top: 1px solid #339af0;
        }
        .mobile-nav.active { display: flex; }
        .mobile-nav ul { list-style: none; }
        .mobile-nav li { margin: 1rem 0; }
        .mobile-nav a { display: block; padding: 0.8rem; font-size: 1.2rem; }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #adb5bd;
        }
        .breadcrumb a { color: #74c0fc; }
        .breadcrumb span { color: #dee2e6; }
        .hero {
            background: radial-gradient(circle at 30% 20%, rgba(116, 192, 252, 0.15) 0%, transparent 50%),
                        radial-gradient(circle at 70% 80%, rgba(255, 107, 107, 0.1) 0%, transparent 50%);
            padding: 4rem 0;
            text-align: center;
            border-bottom: 1px solid #495057;
        }
        .hero p { font-size: 1.3rem; max-width: 800px; margin: 0 auto 2rem; color: #ced4da; }
        .content-section {
            background: rgba(30, 41, 59, 0.7);
            border-radius: 12px;
            padding: 2.5rem;
            margin-bottom: 2.5rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .content-section:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
        }
        .featured-image {
            width: 100%;
            border-radius: 12px;
            border: 3px solid #339af0;
            margin: 2rem auto;
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
        }
        .feature-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .feature-card {
            background: linear-gradient(145deg, #1e293b, #334155);
            padding: 2rem;
            border-radius: 10px;
            border-left: 5px solid #ffa94d;
        }
        .feature-card h4 { margin-top: 0; }
        .interactive-module {
            background: rgba(20, 30, 48, 0.9);
            border-radius: 12px;
            padding: 2rem;
            margin: 3rem 0;
            border: 1px solid #4dabf7;
        }
        .form-group { margin-bottom: 1.5rem; }
        label { display: block; margin-bottom: 0.5rem; font-weight: 600; }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            border-radius: 8px;
            border: 1px solid #495057;
            background: #1e293b;
            color: #f8f9fa;
            font-size: 1rem;
        }
        button {
            background: linear-gradient(90deg, #339af0, #4dabf7);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }
        button:hover { background: linear-gradient(90deg, #228be6, #339af0); transform: translateY(-3px); box-shadow: 0 7px 14px rgba(34, 139, 230, 0.4); }
        .rating { display: flex; gap: 10px; margin: 1rem 0; }
        .star { font-size: 2rem; color: #adb5bd; cursor: pointer; transition: color 0.2s; }
        .star:hover, .star.active { color: #ffd43b; }
        footer {
            background: #0a1929;
            border-top: 1px solid #339af0;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 { color: #74c0fc; margin-bottom: 1.5rem; }
        .footer-links ul { list-style: none; padding-left: 0; }
        .footer-links li { margin-bottom: 0.8rem; }
        friend-link {
            display: block;
            background: rgba(77, 171, 247, 0.1);
            padding: 1rem;
            border-radius: 8px;
            margin: 0.5rem 0;
            border-left: 4px solid #4dabf7;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #495057;
            color: #adb5bd;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.8rem; }
            h2 { font-size: 2.2rem; }
            h3 { font-size: 1.8rem; }
            .header-container { flex-wrap: wrap; }
            nav.desktop-nav { display: none; }
            .mobile-menu-btn { display: block; }
            .hero { padding: 3rem 0; }
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.3rem; }
            h2 { font-size: 1.9rem; }
            section { padding: 2rem 0; }
            .content-section { padding: 1.5rem; }
            .feature-box { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 2rem; }
            .logo a { font-size: 2.2rem; }
            .container { padding: 0 15px; }
        }