*{box-sizing:border-box}
body.nl-tool-layout{margin:0;background:#f7f9fc;color:#172c46;font:14px/1.6 system-ui,-apple-system,"Segoe UI",sans-serif}
.nl-tool-layout .nl-sidebar{position:fixed;inset:0 auto 0 0;width:232px;background:#fff;border-right:1px solid #e7edf5;z-index:50;overflow-y:auto;transition:transform .2s}
.nl-tool-layout .nl-logo{display:flex;flex-direction:column;justify-content:center;min-height:72px;padding:16px 22px;border-bottom:1px solid #e7edf5;color:#14745c;font-size:21px;font-weight:800;text-decoration:none;letter-spacing:.2px}
.nl-logo span{font-size:10px;font-weight:600;color:#8b9aaf;letter-spacing:1.8px}
.nl-welcome{text-align:center;padding:25px 16px;color:#62758d;font-size:14px}
.nl-menu-label{padding:7px 14px;background:#f8fafc;color:#73839a;font-size:11px;font-weight:700;letter-spacing:1.2px}
.nl-tool-layout .nl-sidebar nav.feature-menu,.nl-tool-layout .nl-sidebar nav.menu{display:block;position:static;background:transparent;border:0;border-radius:0;box-shadow:none;margin:0;padding:8px 0;font:inherit}
.nl-tool-layout .nl-sidebar nav .feature-links{display:block!important}
.nl-tool-layout .nl-sidebar nav a{display:flex!important;align-items:center;gap:12px;width:100%;padding:13px 18px;margin:0;background:transparent!important;color:#465f7e!important;border:0;border-radius:0;text-decoration:none;font-size:14px;line-height:1.5;box-shadow:none}
.nl-tool-layout .nl-sidebar nav a:hover{background:#f2f6fd!important;color:#2563eb!important}
.nl-tool-layout .nl-sidebar nav a.active,.nl-tool-layout .nl-sidebar nav a.selected,.nl-tool-layout .nl-sidebar nav a[aria-current=page]{background:#e9f1ff!important;color:#2563eb!important;border-right:3px solid #4b87ff;font-weight:600}
.nl-nav-icon{display:inline-block;width:20px;flex:none;color:#5d86ec;font-size:20px;text-align:center;line-height:1}
.nl-tool-layout .nl-sidebar nav a.brand-menu{margin-top:12px;border-top:1px solid #edf1f7;background:transparent!important;color:#14745c!important}
.nl-tool-layout .tool-menu-toggle,.nl-tool-layout .mobile-menu-toggle{display:none!important}
.nl-tool-layout .nl-topbar{position:fixed;top:0;left:232px;right:0;height:72px;display:flex;align-items:center;gap:16px;padding:0 26px;background:#fff;border-bottom:1px solid #e7edf5;z-index:40;color:#73839a;font-size:13px;transition:left .2s}
.nl-tool-layout .nl-sidebar-toggle{display:flex;align-items:center;justify-content:center;width:36px;height:36px;padding:0;border:0;border-radius:8px;background:#f3f6fb;color:#536b8a;font-size:20px;cursor:pointer}
.nl-tool-layout>main.nl-content{width:calc(100% - 280px);max-width:none;margin:96px 24px 40px 256px;padding:24px;background:#fff;border:1px solid #e6edf6;border-radius:18px;box-shadow:none;min-width:0;overflow-wrap:anywhere}
.nl-tool-layout main h1{font-size:23px;line-height:1.4;margin:0 0 16px;color:#172c46}
.nl-tool-layout main h2{font-size:20px}.nl-tool-layout main h3{font-size:16px}
.nl-tool-layout main p{line-height:1.7}.nl-tool-layout main input,.nl-tool-layout main textarea,.nl-tool-layout main select{max-width:100%;border-color:#dbe4f0;border-radius:10px;background:#fff}
.nl-tool-layout main textarea{width:100%}.nl-tool-layout main button{cursor:pointer}.nl-tool-layout main button:disabled{cursor:not-allowed}
.nl-tool-layout main section,.nl-tool-layout main .auth-box{background:#fff;border:1px solid #e6edf6;border-radius:14px;padding:20px;margin-top:16px}
.nl-tool-layout main .auth-box{margin-top:0}.nl-tool-layout main details{background:#f8fafc;border-color:#e3ebf5}
.nl-tool-layout main .topic-articles{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:26px;border-top:1px solid #e7edf5;padding-top:22px}
.nl-tool-layout main .topic-articles>h2,.nl-tool-layout main .topic-articles>p{grid-column:1/-1;margin:0}
.nl-tool-layout main .topic-articles article{border:1px solid #e6edf6;border-radius:12px;overflow:hidden;padding:14px;margin:0;min-width:0}
.nl-tool-layout main img.article-cover{width:100%;height:180px;object-fit:cover;display:block;border-radius:8px}
.nl-tool-layout a:focus-visible,.nl-tool-layout button:focus-visible{outline:3px solid #7ba9ff;outline-offset:2px}
.nl-tool-layout .nl-menu-backdrop{position:fixed;inset:0;background:#172c4666;border:0;border-radius:0;z-index:45}.nl-menu-backdrop[hidden]{display:none!important}
.nl-menu-collapsed .nl-sidebar{transform:translateX(-100%)}.nl-menu-collapsed .nl-topbar{left:0}.nl-menu-collapsed>main.nl-content{margin-left:24px;width:calc(100% - 48px)}
@media(max-width:1050px){.nl-tool-layout main .topic-articles{grid-template-columns:1fr}}
@media(max-width:800px){
 .nl-tool-layout .nl-sidebar{transform:translateX(-100%)}.nl-tool-layout.nl-menu-open .nl-sidebar{transform:translateX(0)}
 .nl-tool-layout .nl-topbar{left:0;height:60px;padding:0 14px}
 .nl-tool-layout>main.nl-content,.nl-tool-layout.nl-menu-collapsed>main.nl-content{width:calc(100% - 24px);margin:76px 12px 24px;padding:16px;border-radius:14px}
 .nl-tool-layout main h1{font-size:20px}.nl-tool-layout main section,.nl-tool-layout main .auth-box{padding:14px}
 .nl-tool-layout main .topic-articles{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){.nl-tool-layout .nl-sidebar,.nl-tool-layout .nl-topbar{transition:none}}