* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Poppins', sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* Header Styles */
        header {
            background: linear-gradient(135deg, #1a3a8f 0%, #2a4da8 100%);
            color: white;
            padding: 20px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .logo i {
            font-size: 28px;
            color: #FFD700;
        }
        
        .logo h1 {
            font-size: 24px;
            font-weight: 700;
        }
        
        .logo span {
            color: #FFD700;
        }
        
        nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        
        nav a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            font-size: 16px;
            transition: color 0.3s;
        }
        
        nav a:hover {
            color: #FFD700;
        }
        
        .cta-button {
            background-color: #FFD700;
            color: #1a3a8f;
            padding: 10px 24px;
            border-radius: 30px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s;
        }
        
        .cta-button:hover {
            background-color: #ffed4e;
            transform: translateY(-2px);
        }
        
        /* Hero Section */
        .hero {
            background: linear-gradient(rgba(26, 58, 143, 0.85), rgba(26, 58, 143, 0.9)), url('static/bg.jpg');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 100px 0;
            text-align: center;
        }
        
        .hero h2 {
            font-size: 48px;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        
        .hero p {
            font-size: 20px;
            max-width: 800px;
            margin: 0 auto 30px;
            opacity: 0.9;
        }
        
        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-top: 30px;
        }
        
        .secondary-button {
            background-color: transparent;
            color: white;
            border: 2px solid #FFD700;
            padding: 12px 28px;
            border-radius: 30px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s;
        }
        
        .secondary-button:hover {
            background-color: rgba(255, 215, 0, 0.1);
        }
        
        /* Section Common Styles */
        section {
            padding: 80px 0;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }
        
        .section-title h2 {
            font-size: 36px;
            color: #1a3a8f;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }
        
        .section-title h2:after {
            content: '';
            position: absolute;
            width: 70px;
            height: 4px;
            background-color: #FFD700;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
        }
        
        .section-title p {
            color: #666;
            max-width: 700px;
            margin: 0 auto;
            font-size: 18px;
        }
        
        /* Profile Section */
        .profile-container {
            display: flex;
            align-items: center;
            gap: 50px;
            background-color: white;
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
        }
        
        .profile-img {
            flex: 0 0 300px;
        }
        
        .profile-img img {
            width: 100%;
            border-radius: 10px;
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        
        .profile-content h3 {
            font-size: 28px;
            color: #1a3a8f;
            margin-bottom: 15px;
        }
        
        .profile-content p {
            margin-bottom: 20px;
            color: #555;
        }
        
        .profile-stats {
            display: flex;
            gap: 30px;
            margin-top: 30px;
        }
        
        .stat-item {
            text-align: center;
        }
        
        .stat-value {
            font-size: 32px;
            font-weight: 700;
            color: #1a3a8f;
        }
        
        .stat-label {
            color: #777;
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        /* Features Section */
        .features {
            background-color: #f1f5fd;
        }
        
        .features-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .feature-card {
            background-color: white;
            border-radius: 10px;
            padding: 30px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s;
        }
        
        .feature-card:hover {
            transform: translateY(-10px);
        }
        
        .feature-icon {
            width: 70px;
            height: 70px;
            background-color: rgba(26, 58, 143, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }
        
        .feature-icon i {
            font-size: 30px;
            color: #1a3a8f;
        }
        
        .feature-card h3 {
            font-size: 22px;
            color: #1a3a8f;
            margin-bottom: 15px;
        }
        
        /* UI Showcase */
        .ui-showcase {
            background-color: white;
        }
        
        .ui-container {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        
        .ui-main {
            background-color: #1a1a2e;
            border-radius: 10px;
            padding: 20px;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
        }
        
        .ui-header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 15px;
        }
        
        .ui-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
        }
        
        .ui-dot.red {
            background-color: #ff5f56;
        }
        
        .ui-dot.yellow {
            background-color: #ffbd2e;
        }
        
        .ui-dot.green {
            background-color: #27ca3f;
        }
        
        .ui-content {
            display: grid;
            grid-template-columns: 250px 1fr;
            gap: 20px;
            height: 300px;
        }
        
        .ui-sidebar {
            background-color: #162447;
            border-radius: 5px;
            padding: 15px;
        }
        
        .ui-sidebar-item {
            padding: 10px;
            color: #ddd;
            margin-bottom: 5px;
            border-radius: 3px;
            cursor: pointer;
        }
        
        .ui-sidebar-item.active {
            background-color: #1a3a8f;
            color: white;
        }
        
        .ui-main-content {
            background-color: white;
            border-radius: 5px;
            padding: 15px;
            color: #333;
        }
        
        .ui-stats {
            display: flex;
            justify-content: space-around;
            margin-top: 30px;
        }
        
        .ui-stat-card {
            background-color: white;
            border-radius: 10px;
            padding: 20px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            flex: 1;
            margin: 0 10px;
        }
        
        /* Study Group */
        .study-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .study-card {
            background-color: white;
            border-radius: 10px;
            padding: 30px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            text-align: center;
        }
        
        .study-icon {
            width: 80px;
            height: 80px;
            background-color: rgba(255, 215, 0, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
        }
        
        .study-icon i {
            font-size: 36px;
            color: #FFD700;
        }
        
        .study-card h3 {
            font-size: 22px;
            color: #1a3a8f;
            margin-bottom: 15px;
        }
        
        /* Pro Version */
        .pro-version {
            background: blue;
            color: white;
        }
        
        .pro-container {
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }
        
        .pro-container .section-title h2 {
            color: white;
        }
        
        .pro-container .section-title p {
            color: rgba(255, 255, 255, 0.8);
        }
        
        .pro-features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin: 50px 0;
        }
        
        .pro-feature {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 25px;
            border-radius: 10px;
            backdrop-filter: blur(10px);
        }
        
        .pro-feature i {
            font-size: 40px;
            color: #FFD700;
            margin-bottom: 15px;
        }
        
        .price {
            font-size: 48px;
            font-weight: 700;
            margin: 30px 0;
        }
        
        .price span {
            font-size: 20px;
            font-weight: normal;
            opacity: 0.8;
        }
        
        /* Footer */
        footer {
            background-color: #0c1a4a;
            color: white;
            padding: 50px 0 20px;
        }
        
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-column h3 {
            font-size: 20px;
            margin-bottom: 20px;
            color: #FFD700;
        }
        
        .footer-column ul {
            list-style: none;
        }
        
        .footer-column ul li {
            margin-bottom: 10px;
        }
        
        .footer-column a {
            color: #ddd;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-column a:hover {
            color: #FFD700;
        }
        
        .social-icons {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        
        .social-icons a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            color: white;
            text-decoration: none;
            transition: all 0.3s;
        }
        
        .social-icons a:hover {
            background-color: #FFD700;
            color: #1a3a8f;
        }
        
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 14px;
        }
        
        /* Responsive Styles */
        @media (max-width: 992px) {
            .profile-container {
                flex-direction: column;
                text-align: center;
            }
            
            .profile-img {
                flex: 0 0 auto;
                width: 300px;
            }
            
            .hero h2 {
                font-size: 36px;
            }
            
            .hero p {
                font-size: 18px;
            }
        }
        
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                gap: 15px;
            }
            
            nav ul {
                gap: 15px;
                flex-wrap: wrap;
                justify-content: center;
            }
            
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .ui-content {
                grid-template-columns: 1fr;
                height: auto;
            }
            
            .ui-stats {
                flex-direction: column;
                gap: 20px;
            }
            
            .ui-stat-card {
                margin: 0;
            }
            
            .profile-stats {
                justify-content: center;
            }
        }
        
        @media (max-width: 576px) {
            .section-title h2 {
                font-size: 28px;
            }
            
            .profile-img {
                width: 100%;
                max-width: 300px;
            }
            
            .profile-stats {
                flex-direction: column;
                gap: 20px;
            }
        }