:root { --bg:#fafafa; --fg:#1a1a1a; --accent:#0066ff; --muted:#666; --line:#e5e5e5; --code-bg:#f4f4f4; }
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, "Pretendard", "Apple SD Gothic Neo", sans-serif; background: var(--bg); color: var(--fg); line-height: 1.7; padding: 0; }
.container { max-width: 880px; margin: 0 auto; padding: 3rem 1.5rem 5rem; }
header.site { padding: 1.5rem 2rem; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; align-items: baseline; background: white; }
header.site h1 { font-size: 1.1rem; font-weight: 600; letter-spacing: -0.02em; }
header.site nav a { color: var(--accent); text-decoration: none; font-size: 0.9rem; }
h1 { font-size: 1.9rem; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 0.3rem; }
h2 { font-size: 1.4rem; font-weight: 600; margin: 2.2rem 0 0.8rem; padding-top: 0.6rem; border-top: 1px solid var(--line); }
h3 { font-size: 1.1rem; font-weight: 600; margin: 1.6rem 0 0.5rem; }
h4 { font-size: 1rem; font-weight: 600; margin: 1.2rem 0 0.4rem; color: var(--muted); }
p, li { color: var(--fg); margin-bottom: 0.5rem; }
ul, ol { padding-left: 1.5rem; margin-bottom: 1rem; }
a { color: var(--accent); }
code { background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 3px; font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 0.9em; }
pre { background: var(--code-bg); padding: 1rem; border-radius: 6px; overflow-x: auto; font-size: 0.85rem; margin: 1rem 0; }
pre code { background: none; padding: 0; }
table { border-collapse: collapse; margin: 1rem 0; width: 100%; font-size: 0.9rem; }
th, td { border: 1px solid var(--line); padding: 0.5rem 0.7rem; text-align: left; }
th { background: white; font-weight: 600; }
blockquote { border-left: 3px solid var(--accent); padding-left: 1rem; margin: 1rem 0; color: var(--muted); }
hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }
.subtitle { color: var(--muted); margin-bottom: 1.5rem; font-size: 0.95rem; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1rem; margin-top: 2rem; }
.card { padding: 1.3rem; background: white; border: 1px solid var(--line); border-radius: 8px; transition: border-color 0.15s; }
.card:hover { border-color: var(--accent); }
.card .badge { font-size: 0.75rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.4rem; }
.card h3 { margin: 0 0 0.4rem; font-size: 1rem; }
.card h3 a { text-decoration: none; color: var(--fg); }
.card h3 a:hover { color: var(--accent); }
.card p { color: var(--muted); font-size: 0.9rem; margin: 0; }
footer.site { margin-top: 4rem; padding: 2rem; border-top: 1px solid var(--line); text-align: center; color: var(--muted); font-size: 0.85rem; background: white; }