:root{--ink:#101828;--muted:#475467;--rule:#eaecf0;--bg:#fff;--alt:#f9fafb;--brand:#6a4ae6;--brand-ink:#fff}
@media (prefers-color-scheme:dark){:root{--ink:#f5f5f6;--muted:#a3a7ae;--rule:#262b36;--bg:#0c111d;--alt:#161b26;--brand:#9a82ff;--brand-ink:#0c111d}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","Apple SD Gothic Neo","Noto Sans KR",sans-serif}
html:lang(ko) body{word-break:keep-all;overflow-wrap:anywhere}
a{color:var(--brand)}
.top{position:sticky;top:0;z-index:2;display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 24px;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--rule)}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--ink);text-decoration:none;font-size:17px}
.brand svg{width:16px;height:20px;fill:var(--brand)}
.top nav{display:flex;align-items:center;gap:16px;font-size:14px}
.top nav a{color:var(--muted);text-decoration:none}
.top nav a.btn{background:var(--brand);color:var(--brand-ink);padding:7px 14px;border-radius:999px;font-weight:600}
.wrap{display:grid;grid-template-columns:220px minmax(0,720px);gap:48px;max-width:1040px;margin:0 auto;padding:32px 24px 80px}
.toc{position:sticky;top:76px;align-self:start;display:flex;flex-direction:column;gap:2px;font-size:14px}
.toc b{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:6px}
.toc a{color:var(--muted);text-decoration:none;padding:4px 10px;border-radius:8px}
.toc a:hover{background:var(--alt);color:var(--ink)}
h1{font-size:34px;line-height:1.25;margin:0 0 12px;letter-spacing:-.01em}
.lead{color:var(--muted);font-size:17px;margin:0 0 32px}
section{padding:24px 0;border-top:1px solid var(--rule);scroll-margin-top:72px}
h2{font-size:21px;margin:0 0 8px}
p,ol{margin:0 0 12px}
code{background:var(--alt);padding:1px 6px;border-radius:6px;font-size:.92em}
section:target h2{color:var(--brand)}
footer{margin-top:40px;padding-top:20px;border-top:1px solid var(--rule);color:var(--muted);font-size:14px}
@media (max-width:820px){.wrap{grid-template-columns:1fr;gap:16px;padding:20px 16px 64px}.toc{position:static;flex-direction:row;flex-wrap:wrap;gap:6px}.toc b{width:100%}.toc a{background:var(--alt)}h1{font-size:28px}.top{padding:10px 16px}}