/* Reset & Global */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Inter", Arial, sans-serif;
}

body {
    line-height: 1.6;
    color: #f5f5f5;
    background-color: #111; /* Dark background like OpenAI */
}

/* Hero Section */
.hero {
    background-color: #0a0a0a; /* Dark header */
    color: #10a37f; /* Teal highlight text */
    padding: 60px 20px;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.1rem;
    margin-bottom: 30px;
}

.cta-btn {
    display: inline-block;
    background-color: #10a37f; /* Teal button */
    color: #fff;
    padding: 15px 30px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 8px;
    transition: background 0.3s ease;
}

.cta-btn:hover {
    background-color: #0f8a6f;
}

/* Content Section */
.content {
    max-width: 900px;
    margin: 40px auto;
    padding: 0 20px;
}

.content h2 {
    color: #10a37f; /* Teal headings */
    margin-top: 30px;
    margin-bottom: 15px;
}

.content h3 {
    color: #00bcd4; /* Blue accent for subheadings */
    margin-top: 20px;
    margin-bottom: 10px;
}

.content p, .content li {
    margin-bottom: 15px;
}

.content a {
    color: #00bcd4; /* Blue links */
    text-decoration: underline;
}

.content ul {
    margin-left: 20px;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    background-color: #0a0a0a;
    color: #f5f5f5;
    margin-top: 40px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    .cta-btn {
        padding: 12px 25px;
    }
}