*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--bg:#fff;--bg-soft:#f8f9fc;--bg-sidebar:#fff;--bg-search:#f3f4f6;--bg-search-focus:#fff;--text:#111827;--text-secondary:#4b5563;--text-muted:#9ca3af;--border:#e5e7eb;--border-light:#f3f4f6;--accent:#5b5bd6;--accent-soft:rgba(91,91,214,.08);--accent-hover:#4747b3;--hover-bg:#f3f4f6;--card-bg:#fff;--card-border:#e5e7eb;--card-shadow:0 1px 3px rgba(0,0,0,.04);--card-shadow-hover:0 4px 12px rgba(0,0,0,.08);--table-header:#f9fafb;--table-stripe:#fafbfc;--code-bg:#f3f4f6;--code-text:#1e293b;--pre-bg:#1e1e2e;--pre-text:#cdd6f4;--callout-info-bg:#eff6ff;--callout-info-border:#3b82f6;--callout-info-text:#1e40af;--callout-warning-bg:#fffbeb;--callout-warning-border:#f59e0b;--callout-warning-text:#92400e;--callout-error-bg:#fef2f2;--callout-error-border:#ef4444;--callout-error-text:#991b1b;--blockquote-bg:#f8f9fc;--blockquote-border:#d1d5db;--sidebar-width:272px;--content-max:768px;--header-height:64px}@media (prefers-color-scheme:dark){:root{--bg:#111113;--bg-soft:#18181b;--bg-sidebar:#111113;--bg-search:#1e1e24;--bg-search-focus:#25252d;--text:#ececf1;--text-secondary:#a1a1aa;--text-muted:#71717a;--border:#27272a;--border-light:#1e1e24;--accent:#8b8bf5;--accent-soft:rgba(139,139,245,.1);--accent-hover:#a5a5f7;--hover-bg:#1e1e24;--card-bg:#18181b;--card-border:#27272a;--card-shadow:0 1px 3px rgba(0,0,0,.2);--card-shadow-hover:0 4px 12px rgba(0,0,0,.3);--table-header:#1e1e24;--table-stripe:#18181b;--code-bg:#1e1e24;--code-text:#e4e4e7;--pre-bg:#0a0a0f;--pre-text:#cdd6f4;--callout-info-bg:rgba(59,130,246,.1);--callout-info-border:#3b82f6;--callout-info-text:#93c5fd;--callout-warning-bg:rgba(245,158,11,.1);--callout-warning-border:#f59e0b;--callout-warning-text:#fcd34d;--callout-error-bg:rgba(239,68,68,.1);--callout-error-border:#ef4444;--callout-error-text:#fca5a5;--blockquote-bg:#1e1e24;--blockquote-border:#3f3f46}}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--text);background:var(--bg);line-height:1.7;font-size:15px}a{color:inherit;text-decoration:none}.layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);border-right:1px solid var(--border);position:-webkit-sticky;position:sticky;top:0;height:100vh;overflow-y:auto;flex-shrink:0;background:var(--bg-sidebar);display:flex;flex-direction:column;padding:0}.sidebar::-webkit-scrollbar{width:4px}.sidebar::-webkit-scrollbar-track{background:transparent}.sidebar::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}.sidebar-header{padding:20px 20px 0}.sidebar-logo{display:flex;align-items:center;gap:10px;margin-bottom:20px}.sidebar-logo svg{width:28px;height:28px;color:var(--accent)}.sidebar-logo span{font-size:15px;font-weight:600;letter-spacing:-.01em;color:var(--text)}.search-wrap{padding:0 16px;margin-bottom:16px}.search-box{position:relative}.search-icon{position:absolute;left:10px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--text-muted);pointer-events:none}.search-input{width:100%;padding:8px 12px 8px 34px;border:1px solid var(--border);border-radius:8px;background:var(--bg-search);color:var(--text);font-size:13px;outline:none;transition:all .2s;font-family:inherit}.search-input::placeholder{color:var(--text-muted)}.search-input:focus{background:var(--bg-search-focus);border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.search-results{margin-top:4px;border:1px solid var(--border);border-radius:8px;background:var(--card-bg);box-shadow:var(--card-shadow);overflow:hidden;max-height:300px;overflow-y:auto}.search-result-item{display:block;padding:10px 14px;font-size:13px;color:var(--text-secondary);border-bottom:1px solid var(--border-light);transition:background .1s}.search-result-item:last-child{border-bottom:none}.search-result-item:hover{background:var(--hover-bg);color:var(--text)}.search-result-item mark{background:var(--accent-soft);color:var(--accent);border-radius:2px;padding:0 2px}.search-empty{padding:12px 14px;font-size:13px;color:var(--text-muted);text-align:center}.lang-toggle{display:flex;gap:2px;padding:0 20px;margin-bottom:16px}.lang-btn{padding:4px 14px;border:1px solid var(--border);border-radius:6px;background:transparent;cursor:pointer;font-size:12px;font-weight:500;color:var(--text-muted);transition:all .15s;font-family:inherit}.lang-btn:hover{color:var(--text-secondary);border-color:var(--text-muted)}.lang-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}.nav-section{padding:0 12px;flex:1 1}.nav-list{list-style:none}.nav-item a{display:block;padding:7px 12px;border-radius:6px;font-size:13.5px;color:var(--text-secondary);transition:all .12s;font-weight:400}.nav-item a:hover{background:var(--hover-bg);color:var(--text)}.nav-item a.active{background:var(--accent-soft);color:var(--accent);font-weight:500}.main{flex:1 1;min-width:0;display:flex;justify-content:center}.main-inner{width:100%;max-width:var(--content-max);padding:48px 48px 80px}.article-content h1{font-size:2rem;font-weight:700;margin-bottom:12px;line-height:1.25;letter-spacing:-.025em;color:var(--text)}.article-content h2{font-size:1.5rem;font-weight:600;margin-top:48px;margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid var(--border);letter-spacing:-.02em;color:var(--text)}.article-content h3{font-size:1.15rem;font-weight:600;margin-top:32px;margin-bottom:10px;color:var(--text)}.article-content h4{font-size:1rem;font-weight:600;margin-top:24px;margin-bottom:8px;color:var(--text)}.article-content p{margin-bottom:16px;color:var(--text-secondary)}.article-content>p:first-of-type{font-size:1.05rem;color:var(--text-secondary)}.article-content ol,.article-content ul{margin-bottom:16px;padding-left:24px;color:var(--text-secondary)}.article-content li{margin-bottom:6px}.article-content li::marker{color:var(--text-muted)}.article-content strong{font-weight:600;color:var(--text)}.article-content a{color:var(--accent);text-decoration:none;font-weight:500;transition:color .15s}.article-content a:hover{color:var(--accent-hover);text-decoration:underline}.article-content hr{border:none;border-top:1px solid var(--border);margin:32px 0}.article-content table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px;border:1px solid var(--border);border-radius:8px;overflow:hidden}.article-content td,.article-content th{border:1px solid var(--border);padding:10px 14px;text-align:left;color:var(--text-secondary)}.article-content th{background:var(--table-header);font-weight:600;color:var(--text);font-size:13px;text-transform:uppercase;letter-spacing:.03em}.article-content tr:nth-child(2n){background:var(--table-stripe)}.article-content code{background:var(--code-bg);color:var(--code-text);padding:2px 6px;border-radius:5px;font-size:.875em;font-family:JetBrains Mono,Fira Code,monospace}.article-content pre{background:var(--pre-bg);color:var(--pre-text);padding:18px 20px;border-radius:10px;overflow-x:auto;margin:20px 0;border:1px solid var(--border);font-size:13px;line-height:1.6}.article-content pre code{background:none;padding:0;color:inherit;border-radius:0}.article-content blockquote{border-left:3px solid var(--blockquote-border);padding:12px 18px;margin:20px 0;background:var(--blockquote-bg);border-radius:0 8px 8px 0;color:var(--text-secondary)}.article-content details{border:1px solid var(--border);border-radius:8px;padding:14px 18px;margin:12px 0;background:var(--bg-soft)}.article-content summary{font-weight:600;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;color:var(--text);font-size:14px}.article-content details[open] summary{margin-bottom:10px;padding-bottom:10px;border-bottom:1px solid var(--border)}.callout{padding:14px 18px;border-radius:8px;margin:16px 0;font-size:14px;border-left:4px solid;line-height:1.6}.callout p{margin-bottom:4px}.callout p:last-child{margin-bottom:0}.callout-info{background:var(--callout-info-bg);border-color:var(--callout-info-border);color:var(--callout-info-text)}.callout-warning{background:var(--callout-warning-bg);border-color:var(--callout-warning-border);color:var(--callout-warning-text)}.callout-error{background:var(--callout-error-bg);border-color:var(--callout-error-border);color:var(--callout-error-text)}.callout a{color:inherit;text-decoration:underline}.index-title{font-size:2rem;font-weight:700;letter-spacing:-.025em;margin-bottom:6px}.index-description{color:var(--text-muted);font-size:1.05rem;margin-bottom:32px}.index-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));grid-gap:12px;gap:12px}.index-card{display:block;padding:18px 22px;border:1px solid var(--card-border);border-radius:10px;background:var(--card-bg);transition:all .2s;box-shadow:var(--card-shadow)}.index-card:hover{border-color:var(--accent);box-shadow:var(--card-shadow-hover);transform:translateY(-1px)}.index-card h3{font-size:15px;font-weight:600;margin-bottom:4px;color:var(--text)}.index-card p{font-size:13px;color:var(--text-muted);margin:0;line-height:1.5}.sidebar-footer{padding:16px 20px;border-top:1px solid var(--border);font-size:12px;color:var(--text-muted)}@media (max-width:860px){.layout{flex-direction:column}.sidebar{width:100%;height:auto;position:static;border-right:none;border-bottom:1px solid var(--border);max-height:60vh}.main-inner{padding:28px 20px 60px}.index-grid{grid-template-columns:1fr}}