:root {
    --bg-page: #0d1117;    
    --bg-note: #161b22;    
    --text-color: #c9d1d9; 
    --text-heading: #f0f6fc; 
    --muted-color: #8b949e;  
    --border-color: #21262d; 
    --code-bg: #1f242c;      
    --accent-color: #58a6ff; 
    --quote-border: #30363d; 
    --shadow-color: rgba(0, 0, 0, 0.4);
}

body {
    margin: 0;
    padding: 40px 20px;
    background-color: var(--bg-page);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    justify-content: center;
}

.markdown-note {
    width: 100%;
    max-width: 760px;
    background-color: var(--bg-note);
    padding: 48px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 24px var(--shadow-color);
    box-sizing: border-box;
}

h1, h2, h3, h4, h5, h6 {
    margin-top: 24px;
    margin-bottom: 16px;
    font-weight: 600;
    line-height: 1.25;
    color: var(--text-heading);
}

h1 {
    font-size: 2em;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: .3em;
}

h2 {
    font-size: 1.5em;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: .3em;
}

h3 {
    font-size: 1.25em;
}

p {
    margin-top: 0;
    margin-bottom: 16px;
}

ul, ol {
    padding-left: 2em;
    margin-top: 0;
    margin-bottom: 16px;
}

li {
    margin-bottom: 4px;
}

a {
    color: var(--accent-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

blockquote {
    margin: 0 0 16px 0;
    padding: 0 1em;
    color: var(--muted-color);
    border-left: 0.25em solid var(--quote-border);
}

code {
    padding: 0.2em 0.4em;
    font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;
    font-size: 85%;
    background-color: var(--code-bg);
    color: #e6edf3;
    border-radius: 6px;
    border: 1px solid rgba(240, 246, 252, 0.1);
}

pre {
    padding: 16px;
    overflow: auto;
    font-size: 85%;
    line-height: 1.45;
    background-color: var(--code-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-bottom: 16px;
}

pre code {
    padding: 0;
    background-color: transparent;
    border: none;
}

hr {
    height: 0.15em;
    padding: 0;
    margin: 24px 0;
    background-color: var(--border-color);
    border: 0;
}

.note-footer {
    font-size: 0.85em;
    color: var(--muted-color);
    margin-top: 32px;
    margin-bottom: 0;
}

@media (max-width: 600px) {
    body {
        padding: 12px;
    }
    .markdown-note {
        padding: 24px;
    }
}