:root {
    --primary: #FFD000;
    --dark: #000000;
    --bg: #FDFDFD;
    --text: #1A1A1A;
    --muted: #666666;
    --white: #FFFFFF;
    --surface: #FFFFFF;
    --surface-alt: #F6F6F6;
    --border-width: 4px;
    --radius: 8px;
    --shadow: 8px 8px 0px var(--dark);
    --shadow-sm: 4px 4px 0px var(--dark);
    --container: 900px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
    font-size: 18px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
    color: var(--dark);
    line-height: 1.2;
    margin-bottom: 2rem;
    font-weight: 900;
}

h1 { font-size: 2.8rem; letter-spacing: -1.5px; }
h2 {
    font-size: 1.8rem;
    margin-top: 3.5rem;
    padding-left: 1rem;
    border-left: 8px solid var(--primary);
    line-height: 1.1;
}

h3 { font-size: 1.35rem; }

a {
    color: var(--dark);
    text-decoration: none;
    transition: all 0.2s cubic-bezier(0.23, 1, 0.32, 1);
}

p {
    margin-bottom: 1.5rem;
}

img {
    max-width: 100%;
    height: auto;
    border: var(--border-width) solid var(--dark);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

blockquote {
    margin: 2rem 0;
    padding: 1.5rem;
    border-left: 8px solid var(--primary);
    background: #f7f7f7;
}

code,
pre {
    font-family: Consolas, "SFMono-Regular", monospace;
}