.site-nav{position:fixed;top:0;left:0;right:0;z-index:50;background:var(--bg-nav);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-subtle)}.site-nav-inner{max-width:80rem;margin:0 auto;padding:0 1.5rem 0 3rem;display:flex;align-items:center;justify-content:space-between;height:3.5rem}.site-nav-brand{font-size:1.125rem;font-weight:600;letter-spacing:-.025em;color:var(--text-primary);text-decoration:none;transition:color .2s}.site-nav-brand:hover{color:var(--text-secondary)}.site-nav-links{display:flex;align-items:center;gap:2rem}.site-nav-links a{font-size:.875rem;font-weight:500;color:var(--text-primary);text-decoration:none;transition:color .2s}.site-nav-links a:hover{color:var(--text-secondary)}.site-nav-links a.is-active{color:var(--text-label)}.site-nav-links .toolkit-btn{background:var(--btn-primary-bg);color:var(--btn-primary-text);padding:.375rem 1rem;border-radius:9999px;transition:background .2s}.site-nav-links .toolkit-btn:hover{background:var(--btn-primary-hover);color:var(--btn-primary-text)}.site-nav-theme-toggle{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:9999px;border:none;background:transparent;color:var(--text-ghost);cursor:pointer;transition:background .2s;padding:0}.site-nav-theme-toggle:hover{background:var(--bg-hover-ghost)}@media(max-width:768px){.site-nav-inner{padding:0 1rem}.site-nav-links .section-link{display:none}.site-nav-links{gap:1rem}}.mobile-bottom-nav{display:none}@media(max-width:768px){.mobile-bottom-nav{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:50;height:calc(64px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--bg-body);border-top:1px solid var(--border-subtle);align-items:stretch;justify-content:space-around}body{padding-bottom:calc(64px + env(safe-area-inset-bottom))}}.mobile-bottom-nav button,.mobile-bottom-nav a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;border:none;background:transparent;color:var(--text-ghost);text-decoration:none;cursor:pointer;padding:8px 4px;font-family:inherit;font-size:11px;font-weight:500;letter-spacing:-.01em;min-height:44px;transition:color .15s}.mobile-bottom-nav button:hover,.mobile-bottom-nav a:hover,.mobile-bottom-nav button:focus-visible,.mobile-bottom-nav a:focus-visible{color:var(--text-primary)}.mobile-bottom-nav [aria-current=page]{color:var(--accent)}.mobile-bottom-nav svg{width:22px;height:22px;stroke-width:2}.mobile-search-panel,.mobile-menu-drawer{display:none;position:fixed;inset:0;z-index:60}.mobile-search-panel[data-open=true],.mobile-menu-drawer[data-open=true]{display:block}.mobile-panel-backdrop{position:absolute;inset:0;background:#00000080;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);animation:mobilePanelFade .2s ease-out}[data-theme=light] .mobile-panel-backdrop{background:#785a324d}.mobile-panel-sheet{position:absolute;left:0;right:0;bottom:0;max-height:85vh;background:var(--bg-body);border-top:1px solid var(--border-subtle);border-radius:24px 24px 0 0;padding:16px 16px calc(24px + env(safe-area-inset-bottom));animation:mobilePanelSlide .25s cubic-bezier(.16,1,.3,1);overflow-y:auto}.mobile-panel-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}.mobile-panel-title{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-ghost)}.mobile-panel-close{width:36px;height:36px;border-radius:9999px;border:none;background:var(--bg-hover-ghost);color:var(--text-primary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s}.mobile-panel-close:hover{background:var(--border-strong)}.mobile-search-input{width:100%;padding:14px 18px;border-radius:9999px;border:1px solid var(--border-subtle);background:var(--bg-card);color:var(--text-primary);font-size:1rem;font-family:inherit;outline:none;transition:border-color .15s}.mobile-search-input:focus{border-color:var(--accent)}.mobile-search-input::-moz-placeholder{color:var(--text-ghost)}.mobile-search-input::placeholder{color:var(--text-ghost)}.mobile-search-results{margin-top:16px;display:flex;flex-direction:column;gap:8px;list-style:none;padding:0}.mobile-search-results li{margin:0}.mobile-search-results a{display:block;padding:14px 16px;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:16px;color:var(--text-primary);text-decoration:none;transition:background .15s,border-color .15s}.mobile-search-results a:hover{background:var(--bg-card-hover);border-color:var(--border-strong)}.mobile-search-result-title{font-size:.95rem;font-weight:600;margin-bottom:4px;color:var(--text-primary)}.mobile-search-result-desc{font-size:.8rem;color:var(--text-muted);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.mobile-search-empty{padding:32px 16px;text-align:center;color:var(--text-ghost);font-size:.875rem}.mobile-menu-drawer .mobile-panel-sheet{padding-top:20px}.mobile-menu-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:4px}.mobile-menu-list li{margin:0}.mobile-menu-list a{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-radius:16px;color:var(--text-primary);text-decoration:none;font-size:1.125rem;font-weight:600;letter-spacing:-.01em;transition:background .15s,color .15s}.mobile-menu-list a:hover,.mobile-menu-list a:focus-visible{background:var(--bg-card)}.mobile-menu-list a[aria-current=page]{color:var(--accent)}.mobile-menu-list a .arrow{color:var(--text-ghost);font-size:1.25rem}@keyframes mobilePanelFade{0%{opacity:0}to{opacity:1}}@keyframes mobilePanelSlide{0%{transform:translateY(100%)}to{transform:translateY(0)}}