:root { --bg:#fafaf8; --fg:#1a1a1a; --muted:#6b6b6b; --line:#e4e2dc; --card:#ffffff; --accent:#1f4d3a; --accent-fg:#fafaf8; }
@media (prefers-color-scheme: dark) {
  :root { --bg:#121211; --fg:#ececea; --muted:#a3a3a0; --line:#2a2a28; --card:#1b1b1a; --accent:#7fc4a4; --accent-fg:#121211; }
}
* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { margin:0; background:var(--bg); color:var(--fg); font:16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif; }
a { color:var(--accent); }
.top { max-width:760px; margin:0 auto; padding:18px 20px; display:flex; justify-content:space-between; align-items:center; gap:12px; flex-wrap:wrap; }
.logo { font-weight:700; letter-spacing:-0.02em; color:var(--fg); text-decoration:none; font-size:1.1rem; }
.top nav { display:flex; gap:16px; flex-wrap:wrap; font-size:0.9rem; }
.top nav a { color:var(--muted); text-decoration:none; }
.top nav a:hover { color:var(--fg); }
main { max-width:760px; margin:0 auto; padding:24px 20px 40px; }
section { margin:0 0 56px; }
.hero { padding-top:24px; }
h1 { font-size:clamp(1.8rem, 5vw, 2.5rem); line-height:1.15; margin:0 0 16px; letter-spacing:-0.025em; }
h2 { font-size:1.25rem; margin:0 0 14px; letter-spacing:-0.01em; }
h3 { font-size:0.95rem; margin:0 0 6px; }
p { margin:0 0 12px; }
.lead { font-size:1.12rem; }
.ko { color:var(--muted); font-size:0.95rem; }
.muted, .fine { color:var(--muted); font-size:0.9rem; }
.cta { display:inline-block; margin:12px 0 8px; padding:13px 22px; border-radius:10px; background:var(--accent); color:var(--accent-fg); text-decoration:none; font-weight:600; }
.steps { padding-left:22px; margin:0 0 12px; }
.steps li { margin:0 0 8px; }
ul { padding-left:20px; margin:0 0 12px; }
ul li { margin:0 0 6px; }
.alert { background:var(--card); border:1px solid var(--line); border-radius:14px; padding:14px 16px; margin:10px 0; font-size:0.95rem; max-width:460px; }
.alert b { display:block; margin-bottom:4px; }
.alert .link { color:var(--accent); }
.grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(200px, 1fr)); gap:12px; margin:12px 0; }
.grid > div { background:var(--card); border:1px solid var(--line); border-radius:12px; padding:14px 16px; }
.grid p { margin:0; font-size:0.92rem; }
code { font-size:0.88em; background:var(--card); border:1px solid var(--line); border-radius:4px; padding:1px 5px; }
details { border-bottom:1px solid var(--line); padding:12px 0; }
summary { cursor:pointer; font-weight:600; }
details p { margin:8px 0 0; color:var(--muted); }
footer { max-width:760px; margin:0 auto; padding:20px 20px 48px; border-top:1px solid var(--line); color:var(--muted); font-size:0.85rem; display:flex; justify-content:space-between; gap:12px; flex-wrap:wrap; }
footer a { color:inherit; }
.doc h1 { font-size:1.8rem; }
.doc h2 { font-size:1.05rem; margin-top:32px; }