* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --primary: #4361ee;
            --secondary: #3a0ca3;
            --accent: #f72585;
            --light: #f8f9fa;
            --dark: #212529;
            --success: #4cc9f0;
            --card-bg: #ffffff;
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.15);
            --radius: 16px;
            --header-height: 80px;
            --container-padding: clamp(1rem, 5vw, 2rem);
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            background: linear-gradient(135deg, #f5f7ff 0%, #eef2ff 100%);
            color: var(--dark);
            min-height: 100vh;
            font-size: clamp(16px, 2vw, 18px);
        }

        /* Header */
        .site-header {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: white;
            padding: 0.75rem 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
        }

        .header-content {
            max-width: min(1200px, 95vw);
            margin: 0 auto;
            padding: 0 var(--container-padding);
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: clamp(0.5rem, 2vw, 1rem);
            min-width: 0;
        }

        .logo-icon {
            font-size: clamp(1.5rem, 4vw, 2.2rem);
            background: var(--accent);
            min-width: clamp(40px, 8vw, 60px);
            min-height: clamp(40px, 8vw, 60px);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .logo-text {
            min-width: 0;
        }

        .logo-text h1 {
            font-size: clamp(1.2rem, 3.5vw, 1.8rem);
            font-weight: 700;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .logo-text p {
            font-size: clamp(0.7rem, 1.5vw, 0.9rem);
            opacity: 0.9;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* Main Content */
        .main-content {
            max-width: min(1200px, 95vw);
            margin: clamp(1.5rem, 4vw, 2rem) auto;
            padding: 0 var(--container-padding);
        }

        /* Hero Section */
        .hero-section {
            background: linear-gradient(135deg, rgba(67, 97, 238, 0.1) 0%, rgba(58, 12, 163, 0.05) 100%);
            border-radius: var(--radius);
            padding: clamp(2rem, 6vw, 4rem) clamp(1.5rem, 4vw, 3rem);
            margin-bottom: clamp(2rem, 4vw, 3rem);
            text-align: center;
            box-shadow: var(--shadow);
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 100%;
            height: 200%;
            background: radial-gradient(circle, rgba(247, 37, 133, 0.05) 0%, transparent 70%);
        }

        .hero-title {
            font-size: clamp(2rem, 5vw, 3.5rem);
            color: var(--secondary);
            margin-bottom: 1rem;
            line-height: 1.2;
        }

        .hero-subtitle {
            font-size: clamp(1rem, 2.5vw, 1.5rem);
            color: #666;
            margin-bottom: clamp(1.5rem, 3vw, 2rem);
            max-width: min(800px, 90vw);
            margin-left: auto;
            margin-right: auto;
        }

        .hero-buttons {
            display: flex;
            gap: clamp(1rem, 2vw, 1.5rem);
            justify-content: center;
            flex-wrap: wrap;
            margin-top: clamp(1.5rem, 3vw, 2rem);
        }

        /* Кнопки */

.btn-container {
    text-align: center;
    margin: clamp(2rem, 4vw, 3rem) 0;
    padding: clamp(1rem, 3vw, 2rem);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: clamp(0.5rem, 1.5vw, 1rem);
    padding: clamp(0.8rem, 2vw, 1.2rem) clamp(1.5rem, 3vw, 2.5rem);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(67, 97, 238, 0.3);
    border: none;
    cursor: pointer;
    min-width: min(200px, 60vw);
    min-height: 50px;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(67, 97, 238, 0.4);
    background: linear-gradient(135deg, var(--secondary), var(--primary));
}

.btn i {
    font-size: 1.2em;
}


        /* Learning Path */
        .learning-path {
            background: linear-gradient(135deg, rgba(67, 97, 238, 0.05), rgba(247, 37, 133, 0.05));
            border-radius: var(--radius);
            padding: clamp(2rem, 4vw, 3rem);
            margin: clamp(2rem, 4vw, 4rem) 0;
            text-align: center;
        }

        .section-title {
            text-align: center;
            font-size: clamp(1.8rem, 3.5vw, 2.5rem);
            color: var(--secondary);
            margin-bottom: clamp(2rem, 4vw, 3rem);
            position: relative;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: clamp(60px, 10vw, 100px);
            height: 4px;
            background: linear-gradient(to right, var(--primary), var(--accent));
            border-radius: 2px;
        }

        .steps {
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: clamp(1rem, 3vw, 2rem);
            margin-top: clamp(1.5rem, 3vw, 2rem);
        }

        .step {
            display: flex;
            flex-direction: column;
            align-items: center;
            max-width: min(200px, 90vw);
            flex: 1;
            min-width: min(150px, 40vw);
        }

        .step-number {
            background: var(--primary);
            color: white;
            width: clamp(40px, 8vw, 50px);
            height: clamp(40px, 8vw, 50px);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: clamp(1.2rem, 2vw, 1.5rem);
            font-weight: bold;
            margin-bottom: 1rem;
            flex-shrink: 0;
        }

        .step h3 {
            font-size: clamp(1.1rem, 2vw, 1.4rem);
            color: var(--secondary);
            margin-bottom: 0.5rem;
        }

        .step p {
            font-size: clamp(0.9rem, 1.5vw, 1rem);
            color: #666;
            line-height: 1.5;
        }

        .step-arrow {
            color: var(--primary);
            font-size: clamp(1.2rem, 2vw, 1.5rem);
            flex-shrink: 0;
        }

        /* Call to Action */
        .cta-section {
            margin-top: clamp(2rem, 4vw, 4rem);
            padding: clamp(2rem, 4vw, 3rem);
            text-align: center;
        }

        /* Footer */
        .site-footer {
            background: linear-gradient(135deg, var(--secondary) 0%, #1a1a2e 100%);
            color: white;
            padding: clamp(2rem, 4vw, 3rem) 0 clamp(1.5rem, 3vw, 2rem);
            margin-top: clamp(2rem, 4vw, 4rem);
        }

        .footer-content {
            max-width: min(1200px, 95vw);
            margin: 0 auto;
            padding: 0 var(--container-padding);
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(min(250px, 90vw), 1fr));
            gap: clamp(1.5rem, 3vw, 2rem);
        }

        .footer-section h3 {
            font-size: clamp(1.1rem, 2vw, 1.3rem);
            margin-bottom: clamp(1rem, 2vw, 1.5rem);
            color: var(--success);
        }

        .footer-section p {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: clamp(0.5rem, 1vw, 1rem);
            line-height: 1.6;
            font-size: clamp(0.9rem, 1.5vw, 1rem);
        }

        .social-links {
            display: flex;
            gap: clamp(0.8rem, 1.5vw, 1rem);
            margin-top: clamp(1rem, 2vw, 1.5rem);
        }

        .social-link {
            width: clamp(35px, 6vw, 40px);
            height: clamp(35px, 6vw, 40px);
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-decoration: none;
            transition: all 0.3s ease;
            flex-shrink: 0;
        }

        .social-link:hover {
            background: var(--accent);
            transform: translateY(-3px);
        }

        .footer-bottom {
            text-align: center;
            padding-top: clamp(1.5rem, 3vw, 2rem);
            margin-top: clamp(1.5rem, 3vw, 2rem);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.6);
            font-size: clamp(0.8rem, 1.5vw, 0.9rem);
        }

        /* Responsive */
        @media (max-width: 768px) {
            .step-arrow {
                transform: rotate(90deg);
            }
            
            .steps {
                flex-direction: column;
            }
            
            .step {
                max-width: 100%;
                min-width: auto;
            }
        }

        @media (max-width: 480px) {
            .hero-buttons {
                flex-direction: column;
                align-items: center;
                width: 100%;
            }
            
            .btn {
                width: 100%;
                max-width: 300px;
            }
            
            .header-content {
                flex-wrap: nowrap;
            }
            
            .logo-text h1 {
                font-size: clamp(1rem, 4vw, 1.3rem);
            }
        }

        /* Touch optimizations */
        @media (hover: none) and (pointer: coarse) {
            .btn:hover {
                transform: none;
            }
            
            .feature-card:hover,
            .component-card:hover,
            .social-link:hover {
                transform: none;
            }
            
            .btn:active {
                transform: scale(0.98);
            }
        }

        /* Animations */
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-on-scroll {
            opacity: 0;
            animation: fadeIn 0.8s ease forwards;
        }

        /* Smooth scrolling */
        html {
            scroll-behavior: smooth;
        }

        /* Prevent text overflow */
        h1, h2, h3, p {
            overflow-wrap: break-word;
            word-wrap: break-word;
            hyphens: auto;
        }

        /* Improve touch targets */
        button,
        .btn,
        .social-link {
            min-height: 44px;
            min-width: 44px;
        }