.project-switchboard{--nav-font:"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;--nav-mono:"Cascadia Mono","Consolas",monospace;position:sticky;top:var(--project-header-height,80px);z-index:19;display:flex;align-items:center;gap:28px;padding:0 var(--gutter,5vw);min-height:60px;background:var(--ink,#080b0a);color:var(--paper,#e9eee9);border-bottom:1px solid var(--line,#29372e);font:13px/1.5 var(--nav-font)}
html{scroll-padding-top:calc(var(--project-header-height,80px) + 82px)}
body[data-site-page=driverlab] .site-header{z-index:20}
html:not([lang^=zh]) .project-switchboard [data-lang=zh],html[lang^=zh] .project-switchboard [data-lang=en]{display:none!important}
.project-switchboard a{color:inherit;text-decoration:none}.project-switchboard button{font:inherit;color:inherit;cursor:pointer}.project-switchboard :is(a,button,summary):focus-visible{outline:2px solid var(--accent,#9cff57);outline-offset:4px}.project-switchboard [hidden]{display:none!important}
.project-directory{flex:none}.project-directory summary{list-style:none;display:flex;align-items:center;gap:11px;min-height:58px;cursor:pointer;font-size:12px;white-space:nowrap}.project-directory summary::-webkit-details-marker{display:none}.project-directory summary svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:1.2}.directory-count{font:9px var(--nav-mono);color:var(--muted,#a0aaa2)}.directory-toggle{font:20px/1 var(--nav-font);margin-left:5px;transition:transform .3s}.project-directory[open] .directory-toggle{transform:rotate(45deg)}
.project-rail{display:flex;gap:clamp(12px,1.7vw,26px);align-items:center;margin-left:auto;min-width:0}.project-rail a{position:relative;display:flex;align-items:center;min-height:58px;font-size:11px;white-space:nowrap;color:var(--muted,#a0aaa2);transition:color .2s}.project-rail a[aria-current],.project-rail a:hover{color:var(--paper,#e9eee9)}.project-rail a[aria-current]::after{content:"";height:2px;position:absolute;bottom:-1px;left:0;right:0;background:var(--accent,#9cff57)}.project-neighbors{display:flex;gap:1px;align-items:center;margin-left:8px}.project-neighbors a{display:grid;place-items:center;width:38px;min-height:44px;font-size:19px;color:var(--muted,#a0aaa2)}.project-neighbors a:hover{color:var(--accent,#9cff57)}.project-compact-current{display:none}.project-reading-progress{position:absolute;bottom:-1px;left:0;width:100%;height:1px;pointer-events:none}.project-reading-progress i{display:block;width:100%;height:100%;background:var(--accent,#9cff57);transform:scaleX(0);transform-origin:left}
.project-directory-panel{position:absolute;top:calc(100% + 1px);left:0;right:0;background:var(--ink,#080b0a);border-bottom:1px solid var(--line,#29372e);box-shadow:0 24px 48px #0003;padding:32px var(--gutter,5vw) 22px;max-height:calc(100svh - var(--project-header-height,80px) - 60px);overflow:auto;overscroll-behavior:contain}.project-directory[open] .project-directory-panel{animation:directory-enter .35s cubic-bezier(.22,1,.36,1)}.directory-heading{display:flex;justify-content:space-between;align-items:center;gap:25px}.directory-heading p{font:9px var(--nav-mono);color:var(--muted,#a0aaa2);letter-spacing:.12em;margin:0 0 10px}.directory-heading h2{font:500 clamp(25px,3vw,40px)/1.2 var(--nav-font);letter-spacing:-.04em;margin:0}.directory-heading button{display:none;place-items:center;border:1px solid var(--line,#29372e);background:none;width:44px;height:44px;border-radius:50%;font-size:27px;flex:none}.navigation-enhanced .directory-heading button{display:grid}
.directory-filters{display:none;gap:6px;flex-wrap:wrap;margin:24px 0 8px}.navigation-enhanced .directory-filters{display:flex}.directory-filters button{min-height:44px;padding:9px 17px;border:1px solid var(--line,#29372e);border-radius:24px;background:none;font-size:12px}.directory-filters button[aria-pressed=true]{color:var(--ink,#080b0a);background:var(--paper,#e9eee9);border-color:var(--paper,#e9eee9)}.directory-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px;margin-top:20px}.directory-grid a{display:flex;align-items:center;gap:18px;min-height:88px;padding:12px 8px;border-top:1px solid var(--line,#29372e);transition:background .2s}.directory-number{font:10px var(--nav-mono);color:var(--muted,#a0aaa2)}.directory-item-copy{display:flex;flex-direction:column;gap:5px}.directory-item-copy strong{font:500 22px/1.2 var(--nav-font);letter-spacing:-.025em}.directory-item-copy small{font-size:11px;color:var(--muted,#a0aaa2)}.directory-item-arrow{font-size:21px;margin-left:auto;opacity:0;transform:translate(-6px,6px);transition:opacity .2s,transform .3s}.directory-grid a:hover .directory-item-arrow,.directory-grid a:focus-visible .directory-item-arrow,.directory-grid a[aria-current] .directory-item-arrow{opacity:1;transform:none}.directory-grid a[aria-current] .directory-number{color:var(--accent,#9cff57)}.directory-grid a:hover,.directory-grid a[aria-current]{background:var(--surface,#101713)}.directory-grid a:hover strong{color:var(--project-color)}html[data-theme=light] .directory-grid a:hover strong{color:var(--paper)}.directory-footnote{font:10px/1.6 var(--nav-mono);margin:22px 0 0;color:var(--muted,#a0aaa2)}
@keyframes directory-enter{from{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:none}}
@media(max-width:1180px){.project-switchboard{gap:20px}.project-neighbors{display:none}.project-rail{gap:18px}}
@media(max-width:1050px){.project-rail{display:none}.project-compact-current{display:flex;gap:12px;align-items:center;margin-left:auto;font-size:12px}.project-compact-current small{font:9px var(--nav-mono);color:var(--muted,#a0aaa2)}.project-neighbors{display:flex;margin-left:0}.project-neighbors a{width:32px}.directory-grid{gap:0 25px}}
@media(max-width:760px){.project-switchboard{top:var(--project-header-height,70px);min-height:54px;gap:12px}.project-directory summary{min-height:53px;font-size:11px;gap:7px}.directory-count{display:none}.project-compact-current{font-size:11px;gap:8px}.project-compact-current small{display:none}.project-neighbors{gap:0}.project-neighbors a{width:30px;min-height:44px;font-size:18px}.project-directory-panel{padding:24px var(--gutter,22px);max-height:calc(100svh - var(--project-header-height,70px) - 54px)}.directory-heading h2{font-size:26px}.directory-heading p{font-size:8px}.directory-filters{gap:5px;margin-top:18px}.directory-filters button{font-size:11px;padding:8px 11px}.directory-grid{grid-template-columns:1fr;gap:0;margin-top:14px}.directory-grid a{min-height:78px;gap:15px}.directory-item-copy strong{font-size:21px}.directory-item-copy small{font-size:10px}.directory-item-arrow{opacity:1;transform:none}.directory-footnote{font-size:9px}}
@media(prefers-reduced-motion:reduce){.project-directory[open] .project-directory-panel{animation:none}.project-switchboard *{transition:none!important}}