:root {
    --font-serif: "Charter", "Bitstream Charter", "Sitka Text", Cambria, serif;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: "Courier New", Courier, monospace;
    --color-text: #1a1a1a;
    --color-text-secondary: #666;
    --color-background: #fffef9;
    --color-border: #d4d4d4;
    --max-width: 680px;
}

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

body {
    font-family: var(--font-serif);
    font-size: 18px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-background);
    font-weight: 400;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 60px 32px;
}

h1 {
    font-size: 28px;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

h2 {
    font-size: 22px;
    font-weight: 600;
    line-height: 1.3;
    margin-top: 36px;
    margin-bottom: 12px;
}

h3 {
    font-size: 19px;
    font-weight: 600;
    line-height: 1.3;
    margin-top: 28px;
    margin-bottom: 10px;
}

p {
    margin-bottom: 16px;
    font-size: 18px;
    line-height: 1.7;
}

a {
    color: var(--color-text);
    text-decoration: underline;
    text-decoration-color: rgba(0, 0, 0, 0.3);
    text-underline-offset: 2px;
}

a:hover {
    text-decoration-color: rgba(0, 0, 0, 0.7);
}

.meta {
    color: var(--color-text-secondary);
    font-size: 16px;
    margin-bottom: 32px;
    font-style: italic;
}

nav {
    margin-bottom: 48px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-border);
}

nav a {
    text-decoration: none;
    color: var(--color-text-secondary);
    margin-right: 20px;
    font-size: 16px;
}

nav a:hover {
    color: var(--color-text);
}

.nav-div {
    margin-right: 20px;
}

.nav-link {
    text-decoration: none;
    color: var(--color-text-secondary);
}

.nav-link:hover {
    color: var(--color-text);
}

.project-list {
    list-style: none;
    margin: 32px 0;
    padding: 0;
}

.project-list li {
    margin-bottom: 24px;
}

.project-title {
    font-size: 18px;
    font-weight: 600;
    text-decoration: underline;
    text-decoration-color: rgba(0, 0, 0, 0.2);
    color: var(--color-text);
}

.project-title:hover {
    text-decoration-color: rgba(0, 0, 0, 0.5);
}

.project-desc {
    margin-top: 4px;
    color: var(--color-text-secondary);
    font-size: 16px;
    line-height: 1.6;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 28px auto;
    border: 1px solid var(--color-border);
}

figure {
    margin: 32px 0;
}

figcaption {
    margin-top: 8px;
    font-size: 15px;
    color: var(--color-text-secondary);
    text-align: center;
    font-style: italic;
}

blockquote {
    margin: 24px 0;
    padding-left: 20px;
    border-left: 3px solid var(--color-border);
    color: var(--color-text-secondary);
    font-style: italic;
}

code {
    font-family: var(--font-mono);
    font-size: 16px;
    background-color: #f5f5f5;
    padding: 2px 6px;
    border-radius: 3px;
}

pre {
    margin: 24px 0;
    padding: 16px;
    background-color: #f5f5f5;
    border: 1px solid var(--color-border);
    overflow-x: auto;
    font-size: 14px;
    line-height: 1.5;
}

pre code {
    background: none;
    padding: 0;
}

.footer-links {
    margin-top: 64px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
    font-size: 15px;
    color: var(--color-text-secondary);
}