* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, Arial, sans-serif;
}
body {
    line-height: 1.6;
    color: #333;
    background: #f9fafb;
    padding: 20px;
}
.container {
    max-width: 1100px;
    margin: 0 auto;
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
h1 {
    font-size: 32px;
    color: #1e40af;
    margin-bottom: 10px;
}
h2 {
    font-size: 24px;
    color: #1e40af;
    margin: 30px 0 15px;
    padding-bottom: 8px;
    border-bottom: 2px solid #e5e7eb;
}
h3 {
    font-size: 20px;
    color: #1e3a8a;
    margin: 20px 0 10px;
}
p {
    margin: 10px 0;
    font-size: 16px;
}
ul, ol {
    margin-left: 25px;
    margin-bottom: 15px;
}
li {
    margin: 6px 0;
}
.btn {
    display: inline-block;
    background: #2563eb;
    color: white;
    padding: 12px 24px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    margin: 10px 0;
    transition: background 0.2s;
}
.btn:hover {
    background: #1d4ed8;
}
.btn-large {
    background: #16a34a;
    font-size: 18px;
    padding: 16px 32px;
}
.feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 15px;
    margin: 20px 0;
}
.feature-item {
    background: #eff6ff;
    padding: 15px;
    border-radius: 6px;
}
.code {
    background: #f3f4f6;
    padding: 10px 14px;
    border-radius: 6px;
    font-family: monospace;
    display: inline-block;
    margin: 5px 0;
}
.divider {
    height: 1px;
    background: #e5e7eb;
    margin: 35px 0;
}
.faq-item {
    margin: 15px 0;
    padding: 15px;
    background: #f9fafb;
    border-radius: 6px;
}
.text-center {
    margin-top: 10px;
    color: #555;
    text-align: center;
}
footer {
    text-align: center;
    padding: 25px;
    border-radius: 8px;
    margin-top: 30px;
}
footer a {
    color: #3498db;
}