:root{--rt-sidebar-w:236px;--rt-topbar-h:52px;--rt-bg:#f5f6f8;--rt-sidebar-bg:#0f1115;--rt-sidebar-fg:#e6e8ec;--rt-sidebar-muted:#8b91a0;--rt-border:#e3e5ea}*{box-sizing:border-box}body,html{margin:0;padding:0}body{background:var(--rt-bg);font-size:15px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}.rt-sidebar{position:fixed;inset-inline-start:0;top:0;bottom:0;width:var(--rt-sidebar-w);z-index:200;display:flex;flex-direction:column;background:var(--rt-sidebar-bg);color:var(--rt-sidebar-fg);overflow-y:auto}.rt-app-content{padding-left:var(--rt-sidebar-w);min-height:100vh}.rt-scrim,.rt-topbar{display:none}.rt-page{padding:32px 28px 56px;width:100%}.rt-brand{display:flex;align-items:center;gap:10px;padding:18px 18px 14px;font-size:16px;font-weight:600;letter-spacing:.2px}.rt-brand-mark{width:26px;height:26px;border-radius:7px;background:linear-gradient(135deg,#1677ff,#52c5ff);display:grid;place-items:center;font-size:14px;font-weight:700;color:#fff}.rt-nav{flex:1 1;padding:6px 10px 14px;display:flex;flex-direction:column;gap:2px}.rt-nav-label{padding:14px 10px 6px;font-size:12px;text-transform:uppercase;letter-spacing:.6px;color:var(--rt-sidebar-muted)}.rt-nav-item{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:8px;color:var(--rt-sidebar-fg);text-decoration:none;font-size:15px;line-height:1.2;transition:background .15s ease}.rt-nav-item:hover{background:rgba(255,255,255,.07)}.rt-nav-item--active{background:rgba(22,119,255,.18);color:#fff}.rt-nav-item--disabled{opacity:.45;pointer-events:none}.rt-sidebar-foot{border-top:1px solid rgba(255,255,255,.08);padding:12px}@media (max-width:991px){.rt-sidebar{transform:translateX(-100%);transition:transform .25s ease}.rt-sidebar--open{transform:translateX(0)}.rt-app-content{padding-left:0;padding-top:var(--rt-topbar-h)}.rt-topbar{display:flex;align-items:center;gap:10px;position:fixed;top:0;inset-inline:0;height:var(--rt-topbar-h);padding:0 12px;background:var(--rt-sidebar-bg);color:var(--rt-sidebar-fg);z-index:150}.rt-scrim--open{display:block;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:190}.rt-page{padding:18px 14px 40px}}