:root{--bg: #f6f7f9;--surface: #ffffff;--text: #16181d;--text-muted: #5c6270;--border: #d9dde4;--accent: #0b63d6;--accent-contrast: #ffffff;--radius: 10px;--font: system-ui, "Segoe UI", Roboto, sans-serif;--font-mono: ui-monospace, Consolas, "SF Mono", monospace}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg: #0f1116;--surface: #171a21;--text: #e8eaee;--text-muted: #9aa1af;--border: #2a2f3a;--accent: #5da2ff;--accent-contrast: #0f1116}}:root[data-theme=dark]{--bg: #0f1116;--surface: #171a21;--text: #e8eaee;--text-muted: #9aa1af;--border: #2a2f3a;--accent: #5da2ff;--accent-contrast: #0f1116}*{box-sizing:border-box}.site-back{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;font-family:var(--font);font-size:12px;text-decoration:none;color:#1a1d23;background:#ffffffe6;border:1px solid rgba(0,0,0,.35);border-radius:6px;width:fit-content}.site-back:hover{background:#fff}.site-nav{position:fixed;top:0;left:50%;transform:translate(-50%);z-index:1000;display:flex;flex-direction:column;align-items:center;font-family:var(--font);pointer-events:none}.site-nav__panel{display:flex;flex-wrap:wrap;justify-content:center;gap:4px;max-width:min(92vw,720px);padding:6px;background:var(--surface);border:1px solid var(--border);border-top:none;border-radius:0 0 var(--radius) var(--radius);box-shadow:0 4px 16px #00000029;pointer-events:auto;overflow:hidden;max-height:220px;opacity:1;transition:max-height .25s ease,opacity .18s ease,padding .25s ease}.site-nav[data-open=false] .site-nav__panel{max-height:0;padding-top:0;padding-bottom:0;opacity:0;pointer-events:none}.site-nav__link{padding:7px 14px;font-size:14px;line-height:1;white-space:nowrap;text-decoration:none;color:var(--text);border-radius:6px}.site-nav__link:hover{background:color-mix(in srgb,var(--accent) 14%,transparent);color:var(--accent)}.site-nav__link.is-current{background:var(--accent);color:var(--accent-contrast)}.site-nav__tab{display:grid;place-items:center;width:46px;height:22px;padding:0;cursor:pointer;color:var(--text-muted);background:var(--surface);border:1px solid var(--border);border-top:none;border-radius:0 0 8px 8px;box-shadow:0 3px 10px #00000029;pointer-events:auto;transition:color .15s ease}.site-nav__tab:hover{color:var(--accent)}.site-nav__tab:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.site-nav__chevron{font-size:13px;line-height:1;transition:transform .25s ease}.site-nav[data-open=true] .site-nav__chevron{transform:rotate(180deg)}@media print{.site-nav{display:none}}