:root {
    --blck-black: #000000;
    --blck-white: #ffffff;
    --blck-gray: #f5f5f5;
    --blck-dark-gray: #333333;
    --blck-font: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

body {
    font-family: var(--blck-font);
    background: var(--blck-gray);
    color: var(--blck-black);
    line-height: 1.6;
}

.container {
    max-width: 480px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.blck-header {
    text-align: center;
    margin-bottom: 40px;
}

.blck-header h1 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 8px;
}

.hero {
    background: var(--blck-white);
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.hero h2 {
    font-size: 24px;
    margin-bottom: 16px;
}

.hero p {
    color: var(--blck-dark-gray);
    margin-bottom: 30px;
}

.blck-button {
    display: inline-block;
    padding: 14px 24px;
    background: var(--blck-black);
    color: var(--blck-white);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s ease;
}

.blck-button:hover {
    background: var(--blck-dark-gray);
    transform: translateY(-1px);
}

.wallet-card-placeholder {
    background: linear-gradient(135deg, #000 0%, #333 100%);
    color: white;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    margin-bottom: 30px;
}

.installation-info {
    background: var(--blck-white);
    padding: 30px;
    border-radius: 12px;
    margin-bottom: 20px;
}

.installation-status {
    background: var(--blck-white);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
}

.blck-footer {
    margin-top: auto;
    text-align: center;
    padding: 20px 0;
    color: var(--blck-dark-gray);
    font-size: 14px;
}

@media (max-width: 480px) {
    .container {
        padding: 16px;
    }
    
    .hero {
        padding: 30px 20px;
    }
}