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

:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary: #64748b;
    --dark: #1e293b;
    --light: #f8fafc;
    --white: #ffffff;
    --border: #e2e8f0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.container {
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    max-width: 900px;
    width: 100%;
    overflow: hidden;
}

.header {
    background: var(--dark);
    color: var(--white);
    padding: 2rem;
    text-align: center;
}

.header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.main-content {
    padding: 3rem 2rem;
}

.welcome-box {
    text-align: center;
    margin-bottom: 3rem;
}

.welcome-box h2 {
    color: var(--dark);
    font-size: 2rem;
    margin-bottom: 1rem;
}

.welcome-box p {
    color: var(--secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--light);
    color: var(--dark);
}

.btn-secondary:hover {
    background: var(--border);
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.feature {
    padding: 1.5rem;
    background: var(--light);
    border-radius: 12px;
    text-align: center;
}

.feature h3 {
    color: var(--dark);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.feature p {
    color: var(--secondary);
    font-size: 0.9rem;
}

footer {
    background: var(--light);
    padding: 1.5rem;
    text-align: center;
    color: var(--secondary);
}