.site-header{z-index:40;background:var(--bg-overlay);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border-strong);position:sticky;top:0}.site-header-inner{justify-content:space-between;align-items:center;height:64px;display:flex}.brand{font-family:var(--font-display);color:var(--text);align-items:center;gap:10px;font-size:1.05rem;font-weight:600;display:inline-flex}.brand:hover{text-decoration:none}.brand img{border-radius:4px}.site-nav{align-items:center;gap:4px;display:flex}.site-nav a{color:var(--text-muted);border-radius:var(--radius-sm);padding:7px 11px;font-size:.92rem;font-weight:500}.site-nav a:hover{color:var(--accent-strong);background:var(--surface-2);text-decoration:none}.nav-toggle{border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);width:38px;height:38px;color:var(--text);cursor:pointer;justify-content:center;align-items:center;display:none}.nav-toggle:hover{border-color:var(--accent-line)}.nav-toggle-icon,.nav-toggle-close{width:18px;height:18px}.nav-toggle-close,.nav-toggle[aria-expanded=true] .nav-toggle-icon{display:none}.nav-toggle[aria-expanded=true] .nav-toggle-close{display:block}.theme-toggle{border:1px solid var(--border);border-radius:var(--radius-sm);width:36px;height:36px;color:var(--text-muted);cursor:pointer;background:0 0;justify-content:center;align-items:center;margin-left:6px;display:inline-flex}.theme-toggle:hover{color:var(--accent-strong);border-color:var(--border-strong)}.icon-sun{display:none}html[data-theme=light] .icon-sun{display:block}html[data-theme=light] .icon-moon{display:none}.site-footer{border-top:1px solid var(--border-strong);margin-top:30px;padding:40px 0}.site-footer-inner{text-align:center;flex-direction:column;align-items:center;gap:18px;display:flex}.site-footer-links{flex-wrap:wrap;justify-content:center;gap:6px 20px;display:flex}.site-footer-links a{color:var(--text-muted);font-size:.9rem}.site-footer-links a:hover{color:var(--accent-strong)}.site-footer-meta{color:var(--text-faint);font-size:.85rem;font-family:var(--font-mono);margin:0}@media (width<=700px){.nav-toggle{display:inline-flex}.site-nav{background:var(--bg-raised);border-bottom:1px solid var(--border-strong);box-shadow:var(--shadow-pop);flex-direction:column;align-items:stretch;gap:2px;padding:10px 22px 18px;display:none;position:absolute;top:100%;left:0;right:0}.site-nav.is-open{display:flex}.site-nav a,.site-nav .theme-toggle{justify-content:flex-start;width:100%}.site-nav a{border-bottom:1px solid var(--border);padding:12px 10px}.theme-toggle{margin:6px 0 0}}