* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #1e3a8a;
            --secondary: #dc2626;
            --accent: #f59e0b;
            --light: #f8fafc;
            --dark: #0f172a;
            --gray: #64748b;
        }
        body {
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.7;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--secondary);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary), #1e40af);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            color: white;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--accent);
        }
        .my-logo:hover {
            color: white;
            transform: scale(1.02);
        }
        .search-box {
            display: flex;
            background: white;
            border-radius: 50px;
            overflow: hidden;
            padding: 5px;
            min-width: 250px;
        }
        .search-box input {
            border: none;
            padding: 10px 15px;
            flex-grow: 1;
            outline: none;
        }
        .search-box button {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 50px;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-box button:hover {
            background: #b91c1c;
        }
        .breadcrumb {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 10px 20px;
            border-radius: 5px;
            margin-top: 15px;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #e2e8f0;
        }
        .breadcrumb a:hover {
            color: white;
        }
        nav {
            margin-top: 15px;
            background-color: rgba(255, 255, 255, 0.08);
            border-radius: 8px;
            padding: 0;
        }
        .nav-desktop {
            display: flex;
            justify-content: space-around;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-desktop li {
            flex: 1;
            text-align: center;
        }
        .nav-desktop a {
            color: white;
            display: block;
            padding: 15px 10px;
            font-weight: 600;
            border-bottom: 3px solid transparent;
        }
        .nav-desktop a:hover,
        .nav-desktop a.active {
            background-color: rgba(255, 255, 255, 0.15);
            border-bottom-color: var(--accent);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        .nav-mobile {
            display: none;
            list-style: none;
            background-color: var(--primary);
            border-radius: 0 0 8px 8px;
            overflow: hidden;
        }
        .nav-mobile.active {
            display: block;
        }
        .nav-mobile li a {
            color: white;
            display: block;
            padding: 15px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        main {
            padding: 30px 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .content-area {
            background: white;
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .sidebar {
            background: white;
            border-radius: 15px;
            padding: 25px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            align-self: start;
            position: sticky;
            top: 140px;
        }
        .sidebar h3 {
            color: var(--primary);
            padding-bottom: 10px;
            margin-bottom: 20px;
            border-bottom: 2px solid var(--accent);
        }
        .sidebar ul {
            list-style: none;
        }
        .sidebar li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed #e2e8f0;
        }
        h1 {
            color: var(--primary);
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 25px;
            padding-bottom: 15px;
            border-bottom: 3px solid var(--accent);
        }
        h2 {
            color: var(--primary);
            font-size: 2rem;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #e2e8f0;
        }
        h3 {
            color: var(--secondary);
            font-size: 1.6rem;
            margin: 30px 0 15px;
        }
        h4 {
            color: var(--dark);
            font-size: 1.3rem;
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            color: var(--gray);
            font-weight: 500;
            padding: 15px;
            background-color: #f1f5f9;
            border-left: 4px solid var(--primary);
            border-radius: 0 8px 8px 0;
            margin-bottom: 30px;
        }
        .highlight {
            background-color: #fef3c7;
            padding: 15px;
            border-radius: 10px;
            border-left: 5px solid var(--accent);
            margin: 25px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat-card {
            background: linear-gradient(145deg, #e0f2fe, #f0f9ff);
            padding: 20px;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            transition: transform 0.3s ease;
        }
        .stat-card:hover {
            transform: translateY(-5px);
        }
        .stat-card i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 15px;
        }
        .stat-card .number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--secondary);
            display: block;
        }
        .feature-img {
            width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 25px 0;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
            transition: transform 0.5s ease;
        }
        .feature-img:hover {
            transform: scale(1.01);
        }
        .user-module {
            background-color: #f8fafc;
            border: 2px solid #e2e8f0;
            border-radius: 12px;
            padding: 25px;
            margin: 40px 0;
        }
        .module-title {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--primary);
            margin-bottom: 20px;
        }
        .rating {
            display: flex;
            gap: 5px;
            margin: 15px 0;
        }
        .rating i {
            color: #d1d5db;
            cursor: pointer;
            font-size: 1.5rem;
            transition: color 0.2s;
        }
        .rating i:hover,
        .rating i.active {
            color: var(--accent);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #cbd5e1;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.2);
        }
        .btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn:hover {
            background-color: #1e40af;
            transform: translateY(-2px);
        }
        .btn-secondary {
            background-color: var(--secondary);
        }
        .btn-secondary:hover {
            background-color: #b91c1c;
        }
        footer {
            background-color: var(--dark);
            color: #cbd5e1;
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .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: white;
            margin-bottom: 20px;
            display: block;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 10px;
            transition: background 0.3s;
        }
        friend-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #334155;
            font-size: 0.9rem;
            color: #94a3b8;
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                align-items: flex-start;
                gap: 15px;
            }
            .search-box {
                width: 100%;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 25px;
                right: 20px;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .content-area {
                padding: 25px;
            }
            .sidebar {
                position: static;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .content-area, .sidebar {
            animation: fadeIn 0.8s ease-out;
        }