* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}
body {
    line-height: 1.6;
    color: #333;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}
h1 {
    font-size: 2.2rem;
    color: #111827;
    margin-bottom: 15px;
}
h2 {
    font-size: 1.6rem;
    color: #111827;
    margin: 30px 0 15px;
    padding-bottom: 8px;
    border-bottom: 1px solid #e5e7eb;
}
h3 {
    font-size: 1.2rem;
    margin: 15px 0 10px;
}
p {
    margin: 10px 0;
    font-size: 1rem;
}
ul {
    margin-left: 20px;
    margin-bottom: 15px;
}
.btn-primary {
    background:#2563eb;
    color:white;
    padding:12px 24px;
    border-radius:6px;
    text-decoration:none;
    font-weight:600;
    display: inline-block;
    margin: 10px 5px 10px 0;
}
.btn-secondary {
    background:#f3f4f6;
    color:#111827;
    padding:12px 24px;
    border-radius:6px;
    text-decoration:none;
    font-weight:600;
    display: inline-block;
    margin: 10px 0;
}
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin: 20px 0;
}
.card {
    background:#f9fafb;
    padding:20px;
    border-radius:8px;
}
.guide-link {
    color:#2563eb;
    text-decoration:none;
}
.guide-link:hover {
    text-decoration: underline;
}
hr {
    border: none;
    height: 1px;
    background: #e5e7eb;
    margin: 30px 0;
}
.download-box {
    background:#f9fafb;
    padding:25px;
    border-radius:8px;
    text-align:center;
    max-width: 400px;
    margin: 20px auto;
}