:root{--bg:#fff;--panel:#f7f7f5;--ink:#171817;--muted:#6e716d;--quiet:#969993;--line:#e8e8e4;--gold:#a97524;--soft:#f7f0e3;--head:rgba(255,255,255,.92);--shadow:0 18px 60px rgba(25,25,20,.12);--sans:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC",sans-serif;--mono:Consolas,monospace}html[data-theme=dark]{--bg:#101210;--panel:#171a17;--ink:#f0f0eb;--muted:#9a9e98;--quiet:#70756f;--line:#292d29;--gold:#d7a75b;--soft:#2a241a;--head:rgba(16,18,16,.92);--shadow:0 18px 60px rgba(0,0,0,.42)}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.75 var(--sans)}a{color:inherit;text-decoration:none}button,input{font:inherit;color:inherit}a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--gold);outline-offset:2px}.top{position:fixed;z-index:50;inset:0 0 auto;height:66px;display:grid;grid-template-columns:260px 1fr auto auto;column-gap:10px;align-items:center;padding:0 28px;border-bottom:1px solid var(--line);background:var(--head);backdrop-filter:blur(14px)}.brand{display:flex;align-items:center;gap:9px}.brand img{width:31px;height:25px;object-fit:contain}.brand b{letter-spacing:.08em}.brand i{width:1px;height:20px;background:var(--line);margin:0 3px}.brand span{color:var(--muted)}.top>nav{height:100%;display:flex;gap:28px}.top>nav a{position:relative;height:100%;display:grid;place-items:center;color:var(--muted);font-size:13px}.top>nav a.active{color:var(--ink)}.top>nav a.active:after{content:"";position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--gold)}.actions{display:flex;gap:10px;align-items:center}.actions button{height:38px;border:1px solid var(--line);border-radius:8px;background:var(--panel);cursor:pointer}.actions button:first-child{width:230px;text-align:left;padding:0 10px;color:var(--muted)}kbd{font:10px var(--mono);padding:2px 5px;border:1px solid var(--line);border-radius:4px;background:var(--bg)}.actions kbd{float:right}.actions>a{height:38px;display:flex;align-items:center;padding:0 15px;border-radius:8px;background:var(--ink);color:var(--bg);font-size:12px;font-weight:700}.menu{display:none;border:0;background:none;font-size:20px}.lang-switch{display:inline-flex;align-items:center;gap:2px;padding:3px;border:1px solid var(--line);border-radius:8px;background:var(--panel)}.lang-switch button{width:40px;height:30px;padding:0;border:0;border-radius:6px;background:none;color:var(--muted);font-size:12px;font-weight:700;cursor:pointer}.lang-switch button:hover{color:var(--ink)}.lang-switch button[aria-pressed=true]{background:var(--ink);color:var(--bg);cursor:default}html.i18n-pending body{visibility:hidden}.shell{max-width:1380px;min-height:100vh;margin:auto;padding:66px 28px 0;display:grid;grid-template-columns:250px minmax(0,760px) 190px;gap:44px}.side{position:sticky;top:66px;height:calc(100vh - 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/* 与官网首页一致的 HufuOS 横版字标 */
.brand{gap:10px}.brand img{width:32px;height:32px;object-fit:contain}.brand b{font-family:"Noto Serif SC","Songti SC",serif;font-size:18px;letter-spacing:.22em}.brand b em{color:var(--gold);font-style:normal}.brand>span{color:var(--muted)}

/* 隐藏页面与教程目录的滚动条外观，同时保留滚轮、触控板和键盘滚动。 */
html,.side{scrollbar-width:none;-ms-overflow-style:none}
html::-webkit-scrollbar,.side::-webkit-scrollbar{display:none;width:0;height:0}