/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Background */
body {
    background-color: #0d1117;
    color: #c9d1d9;
}

/* Layout */
.container {
    max-width: 800px;
    margin: 60px auto;
    padding: 20px;
}

/* Title */
h1 {
    font-size: 3rem;
    color: #58a6ff;
    margin-bottom: 10px;
}

/* Tagline */
.tagline {
    font-size: 1.1rem;
    color: #8b949e;
    margin-bottom: 30px;
}

/* Card */
.card {
    background-color: #161b22;
    border: 1px solid #30363d;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

/* Card title */
.card h2 {
    color: #58a6ff;
    margin-bottom: 10px;
}

/* List */
ul {
    padding-left: 20px;
}

li {
    margin-bottom: 8px;
}

/* Button */
.btn {
    display: inline-block;
    padding: 10px 16px;
    background-color: #238636;
    color: #ffffff;
    text-decoration: none;
    border-radius: 6px;
    font-weight: bold;
}

.btn:hover {
    background-color: #2ea043;
}

/* Footer */
footer {
    margin-top: 40px;
    text-align: center;
    color: #8b949e;
    font-size: 0.9rem;
}

/* Code */
code {
    background-color: #21262d;
    padding: 2px 6px;
    border-radius: 4px;
    color: #79c0ff;
}