:root {
        --deep-purple: #4CAF50;
        --black: #121212;
        --white: #e0e0e0;
        --gray-light: #1e1e1e;
        --gray-medium: #444;
        --gradient-purple: linear-gradient(45deg, var(--deep-purple), #45a049);
        --gradient-tech: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
    }

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

    body {
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        background: var(--gradient-tech);
        min-height: 100vh;
        color: var(--white);
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
        padding: 20px;
        line-height: 1.6;
    }

    .tabs-container {
        width: 100%;
        max-width: 1200px;
        background-color: rgba(18, 18, 18, 0.85);
        border-radius: 16px;
        padding: 25px;
        margin-top: 20px;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        position: relative;
        overflow: hidden;
    }

    .tabs-container::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: radial-gradient(circle, rgba(76, 175, 80, 0.1) 0%, transparent 70%);
        transform: rotate(30deg);
        z-index: -1;
    }

    .tabs {
        display: flex;
        justify-content: space-between;
        align-items: center;
        border-bottom: 2px solid var(--gray-medium);
        padding-bottom: 15px;
        margin-bottom: 25px;
        flex-wrap: wrap;
    }

    .tab-buttons {
        display: flex;
        gap: 10px;
    }

    .tab-button {
        padding: 12px 24px;
        background: none;
        border: none;
        color: var(--white);
        cursor: pointer;
        font-size: 16px;
        transition: all 0.3s ease;
        position: relative;
        border-radius: 6px;
        overflow: hidden;
    }

    .tab-button::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: var(--gradient-purple);
        opacity: 0.2;
        transition: all 0.4s ease;
        z-index: -1;
    }

    .tab-button:hover::before {
        left: 0;
    }

    .tab-button.active {
        color: var(--deep-purple);
        font-weight: 600;
    }

    .tab-button.active::after {
        content: '';
        position: absolute;
        bottom: -17px;
        left: 0;
        width: 100%;
        height: 3px;
        background: var(--gradient-purple);
        border-radius: 3px 3px 0 0;
    }

    .login-btn {
        padding: 10px 20px;
        background: var(--gradient-purple);
        color: white;
        border-radius: 6px;
        text-decoration: none;
        font-size: 16px;
        transition: all 0.3s ease;
        display: flex;
        align-items: center;
        gap: 8px;
        box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
    }

    .login-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(76, 175, 80, 0.4);
    }

    .tab-content {
        display: none;
        padding: 20px 0;
        animation: fadeIn 0.5s ease;
    }

    .tab-content.active {
        display: block;
    }

    .hero-section {
        display: flex;
        flex-wrap: wrap;
        gap: 30px;
        margin-bottom: 40px;
        align-items: center;
    }

    .hero-text {
        flex: 1;
        min-width: 300px;
    }

    .hero-text h1 {
        font-size: 2.8rem;
        margin-bottom: 20px;
        background: -webkit-linear-gradient(#68b9ad, #266b7e);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        line-height: 1.2;
    }

    .hero-text p {
        font-size: 1.2rem;
        margin-bottom: 30px;
        color: #ccc;
    }

    .image-container {
        flex: 1;
        min-width: 300px;
        height: 300px;
        overflow: hidden;
        border-radius: 12px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        position: relative;
    }

    .image-container img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }

    .image-container:hover img {
        transform: scale(1.05);
    }

    .image-container::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: var(--gradient-purple);
        opacity: 0.1;
        pointer-events: none;
    }

    .section-title {
        text-align: center;
        margin-bottom: 40px;
        color: var(--deep-purple);
        font-size: 2rem;
        position: relative;
        padding-bottom: 15px;
    }

    .section-title::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 80px;
        height: 3px;
        background: var(--gradient-purple);
        border-radius: 3px;
    }

    .section-subtitle {
        text-align: center;
        margin-bottom: 40px;
        font-size: 1.1rem;
        max-width: 800px;
        margin-left: auto;
        margin-right: auto;
        color: #ccc;
    }

    .platforms {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 25px;
        margin-bottom: 50px;
    }

    .platform-card {
        flex: 1;
        min-width: 250px;
        max-width: 350px;
        background: rgba(30, 30, 30, 0.7);
        padding: 25px;
        border-radius: 12px;
        text-align: center;
        transition: all 0.3s ease;
        border: 1px solid rgba(76, 175, 80, 0.1);
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    }

    .platform-card:hover {
        transform: translateY(-8px);
        box-shadow: 0 12px 25px rgba(0, 0, 0, 0.3);
        border-color: rgba(76, 175, 80, 0.3);
    }

    .platform-icon {
        font-size: 2.5rem;
        margin-bottom: 15px;
        color: var(--deep-purple);
    }

    .platform-card h3 {
        color: var(--white);
        margin-bottom: 15px;
        font-size: 1.4rem;
    }

    .platform-card p {
        font-size: 1rem;
        margin-bottom: 0;
        color: #ccc;
    }

    .tagline {
        font-style: italic;
        text-align: center;
        margin: 50px 0 30px;
        color: var(--deep-purple);
        font-size: 1.5rem;
        position: relative;
        padding: 15px;
        font-weight: 300;
    }

    .tagline::before, .tagline::after {
        content: '"';
        font-size: 2rem;
        color: rgba(76, 175, 80, 0.3);
        position: relative;
        top: 10px;
    }

    .features-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 25px;
        margin-bottom: 40px;
    }

    .feature-card {
        background: rgba(30, 30, 30, 0.7);
        padding: 25px;
        border-radius: 12px;
        transition: all 0.3s ease;
        border: 1px solid rgba(76, 175, 80, 0.1);
        position: relative;
        overflow: hidden;
    }

    .feature-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 5px;
        height: 0;
        background: var(--gradient-purple);
        transition: height 0.5s ease;
    }

    .feature-card:hover::before {
        height: 100%;
    }

    .feature-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    }

    .feature-icon {
        font-size: 2rem;
        color: var(--deep-purple);
        margin-bottom: 15px;
    }

    .feature-card h3 {
        color: var(--white);
        margin-bottom: 15px;
        font-size: 1.3rem;
    }

    .feature-card ul {
        list-style-type: none;
        padding-left: 0;
    }

    .feature-card li {
        margin-bottom: 10px;
        position: relative;
        padding-left: 30px;
        color: #ccc;
    }

    .feature-card li::before {
        content: "✓";
        color: var(--deep-purple);
        position: absolute;
        left: 0;
        font-weight: bold;
        font-size: 1.2rem;
    }

    .info-box {
        background: rgba(30, 30, 30, 0.7);
        padding: 25px;
        border-radius: 12px;
        border-left: 4px solid var(--deep-purple);
        margin-top: 40px;
        position: relative;
        overflow: hidden;
    }

    .info-box::after {
        content: '';
        position: absolute;
        top: -50%;
        right: -50%;
        width: 100%;
        height: 200%;
        background: radial-gradient(circle, rgba(76, 175, 80, 0.05) 0%, transparent 70%);
        pointer-events: none;
    }

    .info-box h3 {
        color: var(--deep-purple);
        margin-bottom: 15px;
        font-size: 1.3rem;
    }

    .info-box p {
        margin-bottom: 15px;
        color: #ccc;
    }

    .pricing-card {
        background: rgba(30, 30, 30, 0.7);
        padding: 30px;
        border-radius: 12px;
        text-align: center;
        max-width: 500px;
        margin: 0 auto 40px;
        border: 1px solid rgba(76, 175, 80, 0.2);
        position: relative;
        overflow: hidden;
    }

    .pricing-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: linear-gradient(45deg, transparent 0%, rgba(76, 175, 80, 0.05) 100%);
        pointer-events: none;
    }

    .price {
        font-size: 3rem;
        color: var(--deep-purple);
        margin: 15px 0;
        font-weight: bold;
    }

    .price-period {
        font-size: 1rem;
        color: #ccc;
    }

    .cta-button {
        display: inline-block;
        padding: 12px 30px;
        background: var(--gradient-purple);
        color: white;
        border-radius: 6px;
        text-decoration: none;
        font-size: 1.1rem;
        transition: all 0.3s ease;
        margin-top: 20px;
        border: none;
        cursor: pointer;
        box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
    }

    .cta-button:hover {
        transform: translateY(-3px);
        box-shadow: 0 8px 20px rgba(76, 175, 80, 0.4);
    }

    .floating-particles {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        pointer-events: none;
        z-index: -1;
    }

    .particle {
        position: absolute;
        background: rgba(76, 175, 80, 0.15);
        border-radius: 50%;
        animation: float 15s infinite linear;
    }

    @keyframes float {
        0% {
            transform: translateY(0) translateX(0) rotate(0deg);
            opacity: 0;
        }
        10% {
            opacity: 1;
        }
        90% {
            opacity: 1;
        }
        100% {
            transform: translateY(-100vh) translateX(100vw) rotate(360deg);
            opacity: 0;
        }
    }

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

    .alert {
        padding: 15px;
        border-radius: 8px;
        margin: 20px 0;
        width: 100%;
        max-width: 1200px;
        animation: fadeIn 0.5s ease;
    }

    .alert-success {
        background-color: rgba(76, 175, 80, 0.2);
        border-left: 4px solid var(--deep-purple);
        color: #c8e6c9;
    }

    .alert-error {
        background-color: rgba(244, 67, 54, 0.2);
        border-left: 4px solid #f44336;
        color: #ffcdd2;
    }

    @media (max-width: 768px) {
        .tabs {
            flex-direction: column;
            gap: 15px;
        }
        
        .tab-button.active::after {
            bottom: -15px;
        }
        
        .hero-text h1 {
            font-size: 2.2rem;
        }
        
        .section-title {
            font-size: 1.8rem;
        }
        
        .platforms {
            flex-direction: column;
            align-items: center;
        }
        
        .platform-card {
            width: 100%;
        }
    }

    footer {
        margin-top: 50px;
        text-align: center;
        color: #888;
        font-size: 0.9rem;
        width: 100%;
        max-width: 1200px;
        padding: 20px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }