/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: #334155;
    line-height: 1.6;
}

/* Main container */
.index {
    align-items: center;
    display: flex;
    justify-content: center;
    min-height: 100vh;
    width: 100%;
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

/* Content card */
.content {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    padding: 3rem;
    max-width: 800px;
    width: 100%;
}

/* Logo */
.logo {
    max-width: 200px;
    height: auto;
    margin: 0 auto 2rem;
    display: block;
}

/* Typography */
.heading {
    padding: 0;
    margin: 0 0 1rem 0;
    font-size: 2.5rem;
    font-weight: 700;
    color: #334155;
    letter-spacing: -0.5px;
    line-height: 1.2;
}

h2 {
    font-size: 1.8rem;
    margin: 2rem 0 1rem;
    color: #334155;
    font-weight: 600;
}

.text {
    font-size: 1.25rem;
    padding-bottom: 3rem;
    margin: 0;
    color: #64748b;
    line-height: 1.8;
    letter-spacing: 0.02em;
}

/* Features section */
.features {
    margin: 3rem 0;
}

.list {
    list-style: none;
    padding: 0;
    margin: 2rem 0 0 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.list > li {
    text-align: left;
    padding: 1.5rem;
    background: #f8fafc;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    transition: all 0.2s;
    color: #64748b;
    line-height: 1.7;
    letter-spacing: 0.01em;
}

.list > li:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.list strong {
    display: block;
    color: #475569;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
}

/* Contact section */
.contact {
    margin-top: 3rem;
}

.contact .text {
    padding-bottom: 2rem;
}

/* Button */
.button {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-weight: 600;
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

/* Responsive design */
@media only screen and (max-width: 50rem) {
    .list {
        grid-template-columns: 1fr;
    }
    
    .content {
        padding: 2rem;
    }
    
    .heading {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .text {
        font-size: 1.1rem;
    }
}