* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Arial, sans-serif;
}
body {
    background-color: #f8f9fa;
    color: #333;
    line-height: 1.6;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}
header {
    background: #2c3e50;
    color: white;
    padding: 30px 0;
    text-align: center;
    border-radius: 8px;
    margin-bottom: 30px;
}
header h1 {
    font-size: 2.2rem;
    margin-bottom: 10px;
}
header p {
    font-size: 1.1rem;
    opacity: 0.9;
}
.section {
    background: white;
    padding: 25px;
    border-radius: 8px;
    margin-bottom: 25px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.section h2 {
    color: #2c3e50;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #3498db;
    font-size: 1.6rem;
}
.section h3 {
    color: #34495e;
    margin: 18px 0 10px;
    font-size: 1.3rem;
}
ul {
    margin-left: 25px;
    margin-bottom: 15px;
}
.feature-list {
    list-style: none;
    margin-left: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 12px;
}
.feature-list li {
    background: #ecf0f1;
    padding: 12px 15px;
    border-radius: 6px;
    display: flex;
    align-items: center;
}
.feature-list li::before {
    content: "✅";
    margin-right: 10px;
    color: #27ae60;
}
a {
    color: #3498db;
    text-decoration: none;
    font-weight: 600;
}
a:hover {
    text-decoration: underline;
}
.btn {
    display: inline-block;
    background: #3498db;
    color: white !important;
    padding: 12px 24px;
    border-radius: 6px;
    margin: 10px 5px;
    text-decoration: none !important;
    font-weight: bold;
    transition: background 0.3s;
}
.btn:hover {
    background: #2980b9;
}
.guide-link {
    display: inline-block;
    margin: 8px 0;
    padding: 6px 12px;
    background: #e8f4fd;
    border-radius: 4px;
}
.code {
    background: #f4f4f4;
    padding: 8px 12px;
    border-radius: 4px;
    font-family: monospace;
    color: #e74c3c;
}
.faq-item {
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}
.faq-item:last-child {
    border-bottom: none;
}
.faq-item h4 {
    color: #2c3e50;
    margin-bottom: 8px;
}
footer {
    text-align: center;
    padding: 25px;
    background: #2c3e50;
    color: white;
    border-radius: 8px;
    margin-top: 30px;
}
footer a {
    color: #3498db;
}
.tag-group {
    margin-top: 15px;
}
.tag {
    display: inline-block;
    background: #ecf0f1;
    padding: 5px 10px;
    border-radius: 20px;
    margin: 4px;
    font-size: 0.9rem;
}