:root { 
    --primary: #667eea; 
    --secondary: #764ba2; 
    --text: #2d3748; 
    --bg: #f7fafc; 
}

body { 
    font-family: 'Inter', sans-serif; 
    background-color: var(--bg); 
    color: var(--text); 
    line-height: 1.6; 
    margin: 0; 
    padding: 0; 
}

.container { 
    max-width: 800px; 
    margin: 50px auto; 
    background: #fff; 
    padding: 40px; 
    border-radius: 16px; 
    box-shadow: 0 10px 25px rgba(0,0,0,0.05); 
}

.header { 
    text-align: center; 
    border-bottom: 2px solid #edf2f7; 
    margin-bottom: 30px; 
    padding-bottom: 20px; 
}

.header i { 
    font-size: 3rem; 
    color: var(--primary); 
    margin-bottom: 15px; 
}

h1 { margin: 0; font-size: 1.8rem; color: #1a202c; }

h2 { 
    font-size: 1.3rem; 
    color: var(--primary); 
    margin-top: 30px; 
    display: flex; 
    align-items: center; 
    gap: 10px; 
}

p { color: #4a5568; font-size: 1rem; }

.back-btn { 
    display: inline-flex; 
    align-items: center; 
    gap: 8px; 
    color: var(--primary); 
    text-decoration: none; 
    font-weight: 600; 
    margin-bottom: 20px; 
    transition: 0.2s; 
}

.back-btn:hover { transform: translateX(-5px); }

.footer-note { 
    margin-top: 40px; 
    padding-top: 20px; 
    border-top: 1px solid #edf2f7; 
    font-size: 0.9rem; 
    text-align: center; 
    color: #a0aec0; 
}

@media (max-width: 600px) { 
    .container { margin: 20px; padding: 20px; } 
}