:root{--sidebar-width:240px;--color-bg:#f8fafc;--color-surface:#fff;--color-border:#e2e8f0;--color-border-light:#f1f5f9;--color-text:#334155;--color-text-muted:#64748b;--color-heading:#0f172a;--color-primary:#2563eb;--color-primary-hover:#1d4ed8;--color-primary-light:#eff6ff;--radius:10px;--shadow-sm:0 1px 3px #0f172a0f;--shadow-md:0 4px 16px #0f172a14}*{box-sizing:border-box;margin:0;padding:0}.knowledgeRoot{color:var(--color-text);background:var(--color-bg);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6}.app-shell{min-height:100vh;display:flex}.sidebar{width:var(--sidebar-width);background:var(--color-surface);border-right:1px solid var(--color-border);z-index:100;flex-direction:column;flex-shrink:0;height:100vh;display:flex;position:sticky;top:0;overflow-y:auto}.sidebar-brand{border-bottom:1px solid var(--color-border-light);padding:28px 24px 20px}.sidebar-brand h1{color:var(--color-heading);letter-spacing:-.02em;font-size:1.15rem;font-weight:700}.sidebar-brand p{color:var(--color-text-muted);margin-top:4px;font-size:.78rem}.sidebar-nav{flex:1;padding:16px 12px}.sidebar-nav-label{text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-muted);margin-bottom:8px;padding:0 12px;font-size:.7rem;font-weight:600}.nav-item{text-align:left;cursor:pointer;width:100%;color:var(--color-text);background:0 0;border:none;border-radius:7px;margin-bottom:2px;padding:9px 12px;font-size:.875rem;line-height:1.4;transition:background .15s,color .15s;display:block}.nav-item:hover{background:var(--color-border-light)}.nav-item.active{background:var(--color-primary-light);color:var(--color-primary);font-weight:600}.nav-group{margin-bottom:4px}.nav-group.is-active>.nav-item{color:var(--color-primary);font-weight:600}.nav-sub-list{margin:2px 0 6px;padding:0 0 0 10px;list-style:none}.nav-sub-item{text-align:left;cursor:pointer;width:100%;color:var(--color-text-muted);background:0 0;border:none;border-radius:7px;margin-bottom:2px;padding:7px 12px 7px 18px;font-size:.8125rem;line-height:1.4;transition:background .15s,color .15s;display:block;position:relative}.nav-sub-item:before{content:"";background:var(--color-border);border-radius:50%;width:4px;height:4px;position:absolute;top:50%;left:6px;transform:translateY(-50%)}.nav-sub-item:hover{background:var(--color-border-light);color:var(--color-text)}.nav-sub-item.active{background:var(--color-primary-light);color:var(--color-primary);font-weight:600}.nav-sub-item.active:before{background:var(--color-primary)}.sidebar-footer{border-top:1px solid var(--color-border-light);color:var(--color-text-muted);padding:16px 24px;font-size:.75rem}.main{flex:1;min-width:0;padding:36px 40px 64px 48px}.main-inner{max-width:1080px}.section-layout{align-items:flex-start;gap:40px;display:flex}.section-main{flex:1;min-width:0}.section{display:none}.section.active{animation:.2s fadeIn;display:block}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.section-header{margin-bottom:28px}.section-header h2{color:var(--color-heading);letter-spacing:-.03em;margin-bottom:8px;font-size:1.75rem;font-weight:700}.section-lead{color:var(--color-text-muted);font-size:.95rem;line-height:1.65}.section-toc{border-left:1px solid var(--color-border);scrollbar-width:thin;flex-shrink:0;align-self:flex-start;width:196px;max-height:calc(100vh - 64px);padding:2px 0 2px 16px;position:sticky;top:32px;overflow-y:auto}.section-toc-label{text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-muted);margin-bottom:12px;padding-left:12px;font-size:.68rem;font-weight:600}.section-toc ul{flex-direction:column;gap:2px;list-style:none;display:flex}.section-toc a{color:var(--color-text-muted);border-left:2px solid #0000;margin-left:-17px;padding:5px 0 5px 12px;font-size:.78rem;line-height:1.4;text-decoration:none;transition:color .15s,border-color .15s;display:block}.section-toc a:hover{color:var(--color-primary)}.section-toc a.is-active{color:var(--color-primary);border-left-color:var(--color-primary);font-weight:500}.topic{margin-bottom:36px;scroll-margin-top:24px}.topic:last-child{margin-bottom:0}.topic h3{color:var(--color-heading);border-bottom:1px solid var(--color-border-light);letter-spacing:-.01em;margin-bottom:12px;padding-bottom:10px;font-size:1.05rem;font-weight:600}.topic-.knowledgeRoot{color:var(--color-text);font-size:.9rem;line-height:1.65}.topic-body p{margin:10px 0}.topic-body ul,.topic-body ol{margin:8px 0;padding-left:20px}.topic-body ul li,.topic-body ol li{margin-bottom:5px}.topic-body h4{color:var(--color-heading);margin:14px 0 6px;font-size:.9rem;font-weight:600}.step-list{counter-reset:step-counter;margin:10px 0;list-style:none}.step-list li{counter-increment:step-counter;margin-bottom:10px;padding-left:32px;font-size:.9rem;position:relative}.step-list li:before{content:counter(step-counter);background:var(--color-primary);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:22px;height:22px;font-size:.72rem;font-weight:700;display:flex;position:absolute;top:1px;left:0}.warning{color:#991b1b;background:#fef2f2;border:1px solid #fecaca;border-radius:7px;margin:12px 0;padding:12px 14px;font-size:.875rem}.tip{color:#1e40af;background:#eff6ff;border:1px solid #bfdbfe;border-radius:7px;margin:12px 0;padding:12px 14px;font-size:.875rem}table.data-table{border-collapse:collapse;border:1px solid var(--color-border);border-radius:7px;width:100%;margin:12px 0;font-size:.85rem;overflow:hidden}table.data-table th,table.data-table td{border-bottom:1px solid var(--color-border);text-align:left;vertical-align:top;padding:10px 14px}table.data-table tr:last-child td{border-bottom:none}table.data-table th{color:var(--color-heading);white-space:nowrap;background:#f8fafc;font-weight:600}table.data-table tr:hover td{background:#fafbfc}.tag{border-radius:4px;padding:2px 8px;font-size:.75rem;font-weight:600;display:inline-block}.tag--premium{color:#92400e;background:#fef3c7}.tag--vip{color:#5b21b6;background:#ede9fe}.tag--default{color:#475569;background:#f1f5f9}code{color:#be185d;background:#f1f5f9;border-radius:4px;padding:2px 6px;font-family:SF Mono,Consolas,monospace;font-size:.82rem}.format-grid{grid-template-columns:120px 1fr;gap:6px 16px;margin:10px 0;font-size:.875rem;display:grid}.format-grid dt{color:var(--color-heading);font-weight:600}.format-grid dd{color:var(--color-text)}.mobile-nav-toggle{z-index:200;background:var(--color-primary);color:#fff;cursor:pointer;width:48px;height:48px;box-shadow:var(--shadow-md);border:none;border-radius:50%;justify-content:center;align-items:center;font-size:1.2rem;display:none;position:fixed;bottom:24px;right:24px}@media (max-width:1024px){.section-layout{flex-direction:column;gap:0}.section-toc{border-left:none;border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-surface);width:100%;max-height:none;box-shadow:var(--shadow-sm);order:-1;margin-bottom:24px;padding:14px 16px;position:static}.section-toc-label{padding-left:0}.section-toc a{border-left:none;margin-left:0;padding-left:0;font-size:.85rem}.section-toc a.is-active{border-left:none}}@media (max-width:768px){.app-shell{flex-direction:column}.sidebar{width:280px;box-shadow:var(--shadow-md);transition:left .25s;position:fixed;top:0;left:-100%}.sidebar.open{left:0}.sidebar-overlay{z-index:99;background:#0f172a66;display:none;position:fixed;inset:0}.sidebar-overlay.open{display:block}.main{padding:24px 20px 80px}.section-header h2{font-size:1.4rem}.mobile-nav-toggle{display:flex}table.data-table{font-size:.78rem}table.data-table th,table.data-table td{padding:8px 10px}.format-grid{grid-template-columns:1fr;gap:2px}.format-grid dt{margin-top:8px}}