.nlns-root{--nlns-accent:#2563eb;--nlns-surface:#fff;--nlns-text:#172033;--nlns-muted:#64748b;--nlns-border:#dbe3ef;--nlns-radius:16px;--nlns-drawer:390px;--nlns-top:68%;--nlns-opacity:.78;--nlns-media-opacity:.92;--nlns-launcher:48px;--nlns-media-w:184px;--nlns-media-h:104px;font-family:inherit;color:var(--nlns-text);box-sizing:border-box;z-index:999980}.nlns-root *{box-sizing:border-box}.nlns-rail{position:fixed;top:min(var(--nlns-top),calc(100dvh - 200px));transform:translateY(-50%);z-index:999982;display:flex;flex-direction:column;gap:7px;align-items:flex-start;filter:drop-shadow(0 10px 24px rgba(15,23,42,.14))}.nlns-side-left .nlns-rail{left:0}.nlns-side-right .nlns-rail{right:0;align-items:flex-end}.nlns-scope-btn{appearance:none;border:1px solid color-mix(in srgb,var(--nlns-accent),transparent 48%);background:var(--nlns-accent);color:#fff;width:var(--nlns-launcher);height:var(--nlns-launcher);padding:0;display:grid;place-items:center;cursor:pointer;opacity:var(--nlns-opacity);transition:opacity .18s ease,transform .18s ease,box-shadow .18s ease}.nlns-scope-btn .dashicons{width:auto;height:auto;font-size:23px;line-height:1}.nlns-side-left .nlns-scope-btn{border-radius:0 13px 13px 0}.nlns-side-right .nlns-scope-btn{border-radius:13px 0 0 13px}.nlns-scope-btn:hover,.nlns-scope-btn:focus-visible,.nlns-scope-btn[aria-expanded="true"]{opacity:1;outline:none;box-shadow:0 10px 28px rgba(15,23,42,.22)}.nlns-scope-btn:active{transform:scale(.96)}.nlns-site-btn{background:color-mix(in srgb,var(--nlns-accent),#111827 24%)}
.nlns-media-card{width:var(--nlns-media-w);height:var(--nlns-media-h);opacity:var(--nlns-media-opacity);position:relative;overflow:hidden;background:#111827;border:1px solid rgba(255,255,255,.18);transition:opacity .18s ease}.nlns-side-left .nlns-media-card{border-radius:0 16px 16px 0}.nlns-side-right .nlns-media-card{border-radius:16px 0 0 16px}.nlns-media-card:hover,.nlns-media-card:focus-within{opacity:1}.nlns-media-stage,.nlns-tutor-video,.nlns-tutor-image{width:100%;height:100%}.nlns-tutor-video,.nlns-tutor-image{display:block;object-fit:cover;background:#111827}.nlns-media-stage:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 42%,rgba(2,6,23,.72));pointer-events:none}.nlns-media-name{position:absolute;left:9px;right:54px;bottom:7px;z-index:3;color:#fff;display:flex;align-items:center;gap:5px;min-width:0;font-size:10px;font-weight:750;text-shadow:0 1px 4px rgba(0,0,0,.45)}.nlns-media-name span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nlns-media-name .dashicons{font-size:14px;width:14px;height:14px}.nlns-media-controls{position:absolute;right:6px;bottom:5px;z-index:4;display:flex;gap:4px}.nlns-media-controls button{width:24px;height:24px;border:1px solid rgba(255,255,255,.28);border-radius:999px;background:rgba(15,23,42,.7);color:#fff;display:grid;place-items:center;padding:0;cursor:pointer;backdrop-filter:blur(6px)}.nlns-media-controls button .dashicons{font-size:14px;width:14px;height:14px;line-height:1}.nlns-media-card.is-paused .nlns-media-controls [data-nlns-media-play]{background:var(--nlns-accent)}
.nlns-overlay{position:fixed;inset:0;background:rgba(15,23,42,.36);backdrop-filter:blur(1.5px);z-index:999983;opacity:0;pointer-events:none;transition:.2s ease}.nlns-drawer{position:fixed;top:0;bottom:0;width:min(var(--nlns-drawer),92vw);background:var(--nlns-surface);z-index:999984;box-shadow:0 0 48px rgba(15,23,42,.24);display:flex;flex-direction:column;transform:translateX(-105%);transition:transform .24s ease;visibility:hidden}.nlns-side-left .nlns-drawer{left:0;border-radius:0 var(--nlns-radius) var(--nlns-radius) 0}.nlns-side-right .nlns-drawer{right:0;transform:translateX(105%);border-radius:var(--nlns-radius) 0 0 var(--nlns-radius)}.nlns-root.is-open .nlns-overlay{opacity:1;pointer-events:auto}.nlns-root.is-open .nlns-drawer{transform:translateX(0);visibility:visible}.nlns-drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 18px 14px;border-bottom:1px solid var(--nlns-border);gap:12px}.nlns-drawer-head>div{display:flex;flex-direction:column;gap:2px;min-width:0}.nlns-eyebrow{font-size:10px;letter-spacing:.13em;font-weight:800;color:var(--nlns-accent)}.nlns-drawer-head strong{font-size:21px;line-height:1.2;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nlns-drawer-head small{color:var(--nlns-muted);font-size:10px}.nlns-close{width:42px;height:42px;flex:0 0 42px;border:1px solid var(--nlns-border);border-radius:12px;background:transparent;color:var(--nlns-text);display:grid;place-items:center;cursor:pointer}.nlns-drawer-tabs{display:grid;grid-template-columns:repeat(5,1fr);gap:4px;padding:8px;border-bottom:1px solid var(--nlns-border);overflow:auto}.nlns-drawer-tabs button{border:0;background:transparent;color:var(--nlns-muted);padding:8px 5px;border-radius:10px;display:flex;flex-direction:column;align-items:center;gap:4px;font-size:10px;font-weight:700;min-width:58px;cursor:pointer}.nlns-drawer-tabs button.is-active{background:color-mix(in srgb,var(--nlns-accent),transparent 90%);color:var(--nlns-accent)}.nlns-drawer-body{padding:14px 14px 24px;overflow:auto;overscroll-behavior:contain;flex:1}.nlns-panel[hidden]{display:none!important}.nlns-link-list,.nlns-link-list ul,.nlns-lesson-list,.nlns-contents-list{list-style:none;margin:0;padding:0}.nlns-link-list li{margin:0 0 7px}.nlns-link-list a{display:flex;align-items:center;gap:11px;padding:12px 11px;border:1px solid var(--nlns-border);border-radius:12px;text-decoration:none;color:var(--nlns-text);background:var(--nlns-surface);font-size:14px}.nlns-link-list a:hover,.nlns-link-list a:focus-visible,.nlns-link-list .current-menu-item>a,.nlns-link-list .is-current>a{border-color:var(--nlns-accent);background:color-mix(in srgb,var(--nlns-accent),transparent 94%)}.nlns-link-list a>.dashicons:last-child{margin-left:auto;color:var(--nlns-muted)}.nlns-path-list ul{padding-left:14px;margin-top:7px}.nlns-path-list li.menu-item-has-children>a{font-weight:750}.nlns-group{border:1px solid var(--nlns-border);border-radius:13px;margin-bottom:9px;background:var(--nlns-surface);overflow:hidden}.nlns-group summary{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:12px;cursor:pointer;user-select:none}.nlns-group summary>span:first-child{display:flex;align-items:center;gap:8px;min-width:0}.nlns-group summary strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nlns-count{display:grid;place-items:center;min-width:25px;height:25px;border-radius:999px;background:color-mix(in srgb,var(--nlns-accent),transparent 90%);color:var(--nlns-accent);font-size:11px;font-weight:800}.nlns-lesson-list{border-top:1px solid var(--nlns-border);counter-reset:lesson;padding:7px 0}.nlns-lesson-list li{counter-increment:lesson}.nlns-lesson-list a{display:flex;gap:8px;padding:9px 12px;text-decoration:none;color:var(--nlns-text);font-size:13px;line-height:1.35}.nlns-lesson-list a:before{content:counter(lesson,decimal-leading-zero);font-size:10px;font-weight:800;color:var(--nlns-muted);min-width:20px}.nlns-lesson-list .is-current a{color:var(--nlns-accent);font-weight:750;background:color-mix(in srgb,var(--nlns-accent),transparent 94%)}.nlns-contents-list li{margin:0}.nlns-contents-list a{display:block;text-decoration:none;color:var(--nlns-text);border-left:2px solid var(--nlns-border);padding:8px 9px;font-size:13px}.nlns-contents-list a:hover,.nlns-contents-list a:focus-visible{border-color:var(--nlns-accent);color:var(--nlns-accent);background:color-mix(in srgb,var(--nlns-accent),transparent 95%)}.nlns-contents-list .level-h3 a{padding-left:20px}.nlns-contents-list .level-h4 a{padding-left:31px;font-size:12px}.nlns-contents-list .level-h5 a,.nlns-contents-list .level-h6 a{padding-left:42px;font-style:italic;font-size:12px}.nlns-empty{padding:16px;border:1px dashed var(--nlns-border);border-radius:12px;color:var(--nlns-muted);font-size:13px}.nlns-actions{display:flex;gap:7px;padding:10px 12px 14px;border-top:1px solid var(--nlns-border);overflow:auto}.nlns-actions a{display:flex;align-items:center;gap:6px;padding:9px 10px;border-radius:999px;background:color-mix(in srgb,var(--nlns-accent),transparent 92%);color:var(--nlns-accent);text-decoration:none;font-size:11px;font-weight:800;white-space:nowrap}.nlns-bottom-nav{position:fixed;left:50%;bottom:max(10px,env(safe-area-inset-bottom));transform:translateX(-50%);z-index:999981;width:min(760px,calc(100vw - 22px));display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:6px;padding:6px;background:color-mix(in srgb,var(--nlns-surface),transparent 5%);border:1px solid var(--nlns-border);border-radius:16px;box-shadow:0 10px 34px rgba(15,23,42,.18);backdrop-filter:blur(10px)}.nlns-bottom-nav.is-inline{position:relative;left:auto;bottom:auto;transform:none;width:100%;z-index:auto}.nlns-bottom-btn{display:flex;align-items:center;gap:6px;min-width:0;padding:8px 7px;border-radius:11px;text-decoration:none;color:var(--nlns-text);font-size:11px;font-weight:750;line-height:1.1}.nlns-bottom-btn:hover,.nlns-bottom-btn:focus-visible{background:color-mix(in srgb,var(--nlns-accent),transparent 92%);color:var(--nlns-accent)}.nlns-bottom-btn span:not(.dashicons){overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nlns-bottom-btn small{display:block;font-size:8px;color:var(--nlns-muted);font-weight:800;margin-bottom:2px}.nlns-next{justify-content:flex-end;text-align:right}.nlns-bottom-center{text-align:center;min-width:94px}.nlns-bottom-center a{display:flex;align-items:center;justify-content:center;gap:4px;color:var(--nlns-accent);text-decoration:none;font-size:10px;font-weight:850;white-space:nowrap}.nlns-bottom-center small{display:block;color:var(--nlns-muted);font-size:9px;margin-top:2px}.nlns-inline-path{max-width:100%}
@media (max-width:640px){.nlns-drawer{width:min(94vw,430px)}.nlns-drawer-head{padding-top:max(16px,env(safe-area-inset-top))}.nlns-drawer-tabs{grid-template-columns:repeat(5,minmax(62px,1fr))}.nlns-media-card{width:min(var(--nlns-media-w),168px);height:min(var(--nlns-media-h),98px)}.nlns-rail{top:min(var(--nlns-top),calc(100dvh - 205px))}.nlns-bottom-nav{grid-template-columns:1fr 90px 1fr}.nlns-bottom-btn{font-size:10px}.nlns-bottom-btn small{font-size:7px}}
@media (max-width:390px){.nlns-media-card{width:min(var(--nlns-media-w),154px);height:min(var(--nlns-media-h),90px)}.nlns-bottom-center{min-width:76px}.nlns-bottom-center a{font-size:9px}.nlns-bottom-btn .dashicons{display:none}.nlns-drawer-body{padding-left:10px;padding-right:10px}}
@media (prefers-reduced-motion:reduce){.nlns-root *{transition:none!important;scroll-behavior:auto!important}}