.nl-purchase{background:var(--paper);border:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:18px 40px;max-width:1000px;margin:0 0 34px;padding:22px 24px;display:flex}.nl-purchase>div:first-child{gap:4px;display:grid}.nl-purchase>div:first-child strong{color:var(--ink);align-items:baseline;gap:4px;font-size:24px;display:inline-flex}.nl-purchase>div:first-child strong small{color:var(--muted);font-size:14px;font-weight:500}.nl-purchase>div:first-child strong svg{color:var(--teal);align-self:center}.nl-purchase>div:first-child span{color:var(--muted);font-size:14px}.nl-purchase-actions{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.nl-purchase-add,.nl-purchase-buy{font:inherit;border:1px solid var(--ink);cursor:pointer;align-items:center;gap:9px;min-height:46px;padding:0 18px;font-size:15px;font-weight:600;text-decoration:none;display:inline-flex}.nl-purchase-add{background:var(--paper);color:var(--ink)}.nl-purchase-add[aria-pressed=true]{border-color:var(--teal);color:var(--teal);background:#e3efe9}.nl-purchase-add:disabled{opacity:.55;cursor:default}.nl-purchase-buy{background:var(--teal);color:#fff;border-color:var(--teal)}.nl-purchase-link{color:var(--teal);border-bottom:1px solid;align-items:center;gap:6px;font-size:14px;display:inline-flex}.nl-purchase-owned{background:#e3efe9;border-color:#bcd8cb}.nl-purchase-owned>div:first-child strong{color:var(--teal);font-size:20px}
.nl-library,.nl-detail,.nl-product-notes{overflow-wrap:anywhere;font-size:16px;line-height:1.7}.nl-kicker{letter-spacing:.14em;text-transform:uppercase;width:fit-content;color:var(--brand);align-items:center;gap:8px;margin:0 0 14px;font-size:12px;font-weight:600;display:flex}.nl-kicker:before{content:"";background:currentColor;border-radius:2px;width:18px;height:2px}.nl-library{padding:clamp(56px, 6vw, 88px) var(--inline);background:var(--bg);border-top:1px solid var(--line)}.nl-library>header{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:28px;display:flex}.nl-library>header h2{margin:0 0 10px}.nl-library>header p:not(.nl-kicker){color:var(--muted);max-width:52ch;margin:0}.nl-library>header>a{color:var(--brand-ink);white-space:nowrap;align-items:center;gap:6px;font-weight:600;display:inline-flex}.nl-library>header>a svg{width:15px}.nl-library-tools{flex-wrap:wrap;align-items:center;gap:10px;margin:0 0 22px;display:flex}.nl-library-tools input{border:1px solid var(--line);border-radius:var(--r-pill);background:var(--surface);min-width:280px;height:42px;padding:0 14px;font-size:14px}.nl-library-tools input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);outline:0}.nl-library-tools nav{flex-wrap:wrap;flex:1;gap:6px;display:flex}.nl-library-tools>span{color:var(--muted);font-size:14px}.nl-note-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;display:grid}.nl-note-grid article{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);align-content:start;gap:10px;padding:24px;transition:transform .2s,box-shadow .2s;display:grid;position:relative}.nl-note-grid article:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}.nl-note-grid article>span{letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-size:12px;font-weight:600}.nl-note-grid h3{font-size:21px;line-height:1.2}.nl-note-grid h3 a:after{content:"";position:absolute;inset:0}.nl-note-grid p{color:var(--ink-2);font-size:14.5px;line-height:1.55}.nl-note-grid footer{border-top:1px solid var(--line);color:var(--muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-top:8px;padding-top:14px;font-size:13px;display:flex}.nl-note-grid footer a{color:var(--brand-ink);align-items:center;gap:6px;font-weight:600;display:inline-flex;position:relative}.nl-note-grid footer a svg{width:14px}.nl-library>p{color:var(--muted)}.nl-product-notes{padding:32px 0 8px}.nl-product-notes h2{margin:0 0 8px;font-size:28px}.nl-product-notes>p{color:var(--muted);max-width:60ch}.nl-note-columns{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin:22px 0;display:grid}.nl-note-columns article{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:20px 22px}.nl-note-columns h3{margin:0 0 10px;font-size:17px}.nl-note-columns ul{color:var(--ink-2);gap:6px;margin:0;padding-left:18px;font-size:15px;display:grid}.nl-faq-list{gap:8px;display:grid}.nl-faq-list details,.nl-module{border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);padding:0 20px}.nl-faq-list summary,.nl-module summary{cursor:pointer;justify-content:space-between;gap:12px;padding:16px 0;font-size:15.5px;font-weight:600;list-style:none;display:flex}.nl-faq-list summary::-webkit-details-marker{display:none}.nl-module summary::-webkit-details-marker{display:none}.nl-faq-list summary:after,.nl-module summary:after{content:"+";color:var(--muted);font-weight:500}.nl-faq-list details[open] summary:after,.nl-module[open] summary:after{content:"−"}.nl-faq-list details p,.nl-module p{color:var(--ink-2);margin:0 0 16px;font-size:15px}.nl-detail{max-width:860px;padding:40px var(--gutter) 80px;margin:0 auto}.nl-back{color:var(--muted);margin-bottom:26px;font-size:14px;font-weight:600;display:inline-flex}.nl-back:hover{color:var(--ink)}.nl-detail>header{margin-bottom:26px}.nl-detail>header h1{margin:0 0 14px;font-size:clamp(34px,4.6vw,60px)}.nl-detail>header>p:not(.nl-kicker){color:var(--muted);font-size:18px;line-height:1.55}.nl-detail-meta{flex-wrap:wrap;gap:8px;margin-top:18px;display:flex}.nl-detail-meta span,.nl-detail-meta strong{border-radius:var(--r-pill);background:var(--surface);border:1px solid var(--line);padding:6px 12px;font-size:13px}.nl-detail-meta strong{background:var(--ink);color:#fff;border-color:var(--ink)}.nl-detail-body{gap:14px;display:grid}.nl-detail-body>p{color:var(--ink-2);font-size:17px;line-height:1.75}.nl-detail-body section{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);margin-top:18px;padding:24px}.nl-detail-body section h2{margin:0 0 14px;font-size:24px}.nl-detail-body ul{gap:10px;margin:0;padding:0;list-style:none;display:grid}.nl-detail-body li{color:var(--ink-2);align-items:flex-start;gap:10px;font-size:15.5px;display:flex}.nl-detail-body li svg{width:18px;height:18px;color:var(--mint);flex:none;margin-top:3px}.nl-detail-body section>p{color:var(--muted);margin-top:12px;font-size:15px}.nl-module{margin-bottom:10px}.nl-exercise{border-radius:var(--r-sm);background:var(--brand-soft);padding:12px 14px;color:var(--brand-ink)!important}.nl-resource-actions{flex-wrap:wrap;gap:12px;margin:26px 0 8px;display:flex}.nl-resource-actions button,.nl-resource-actions a{border-radius:var(--r-pill);border:1px solid var(--line-strong);background:var(--surface);height:44px;font:inherit;cursor:pointer;align-items:center;gap:8px;padding:0 18px;font-size:14px;font-weight:600;display:inline-flex}.nl-resource-actions button:hover,.nl-resource-actions a:hover{border-color:var(--ink)}.nl-resource-actions svg{width:15px}.nl-detail-body .deep-case li{display:list-item}.nl-detail-body .deep-case ol,.nl-detail-body .deep-case ul{padding-left:20px;list-style:decimal}.nl-detail-body .deep-case ul{list-style:outside}.nl-modules>header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin-bottom:14px;display:flex}.nl-modules>header h2{margin:0}.nl-progress{gap:6px;min-width:200px;display:inline-grid}.nl-progress i{background:var(--mint);border-radius:3px;height:6px;display:block}.nl-progress{padding-top:8px;position:relative}.nl-progress:before{content:"";background:var(--surface-3);border-radius:3px;height:6px;position:absolute;top:8px;left:0;right:0}.nl-progress i{z-index:1;position:relative}.nl-progress b{color:var(--muted);font-size:13px;font-weight:600}.nl-lock{color:var(--muted);border-radius:var(--r-pill);background:var(--surface-3);align-items:center;gap:6px;padding:8px 12px;font-size:13px;font-weight:600;display:inline-flex}.nl-lock svg,.nl-module summary svg{flex:none;width:16px;height:16px}.nl-module summary{justify-content:flex-start;align-items:center}.nl-module summary svg{color:var(--mint)}.nl-module.locked{background:var(--surface-2)}.nl-module.locked summary{color:var(--muted);cursor:not-allowed}.nl-module.locked summary svg{color:var(--muted)}.nl-module.locked summary:after{content:none}.nl-module summary em{color:var(--muted);margin-left:auto;font-size:12px;font-style:normal;font-weight:600}.nl-module.complete{border-color:#bfe8d6}.nl-complete{border-radius:var(--r-pill);border:1px solid var(--line-strong);background:var(--surface);height:40px;font:inherit;cursor:pointer;align-items:center;gap:8px;margin:4px 0 18px;padding:0 16px;font-size:14px;font-weight:600;display:inline-flex}.nl-complete:hover{border-color:var(--ink)}.nl-complete.done{background:var(--mint-soft);color:#0b7a55;border-color:#0000}.nl-complete svg{width:16px;height:16px}.nl-owned{border-radius:var(--r-pill);background:var(--mint-soft);color:#0b7a55;align-items:center;gap:6px;padding:6px 12px;font-size:13px;font-weight:600;display:inline-flex}.nl-owned svg{width:15px;height:15px}
.conversation-exchanges{color:var(--ink);margin-bottom:22px}.conversation-exchanges .exchange-intro{background:0 0;border:0;margin:0 0 20px;padding:0;display:block}.conversation-exchanges .exchange-intro>span{letter-spacing:.14em;text-transform:uppercase;color:var(--brand);align-items:center;gap:8px;font-size:12px;font-weight:600;display:inline-flex}.conversation-exchanges .exchange-intro>span:before{content:"";background:currentColor;border-radius:2px;width:18px;height:2px}.conversation-exchanges .exchange-intro h3{margin:10px 0;font-size:24px;line-height:1.2}.conversation-exchanges .exchange-intro p{color:var(--muted);max-width:60ch;margin:0;font-size:15.5px;line-height:1.65}.conversation-exchanges .exchange-thread{border-top:1px solid var(--line);margin:18px 0 26px;padding-top:18px}.conversation-exchanges .exchange-step{border-radius:var(--r-md);background:var(--surface-2);border:1px solid var(--line);grid-template-columns:32px minmax(0,1fr);align-items:start;gap:12px;margin:0 0 10px;padding:14px 16px;display:grid}.conversation-exchanges .exchange-marker{background:var(--surface);border:1px solid var(--line);width:30px;height:30px;color:var(--muted);border-radius:50%;place-items:center;font-size:13px;font-weight:700;display:grid}.conversation-exchanges .exchange-label{color:var(--muted);margin-bottom:6px;font-size:12.5px;font-weight:600;line-height:1.5;display:block}.conversation-exchanges .exchange-step p{color:var(--ink-2);background:0 0;border:0;max-width:70ch;margin:0;padding:0;font-size:15px;line-height:1.7}.conversation-exchanges .exchange-answer,.conversation-exchanges .exchange-clarification{background:var(--brand-soft);border-color:#0000;margin-left:36px}.conversation-exchanges .exchange-answer .exchange-marker,.conversation-exchanges .exchange-clarification .exchange-marker{background:var(--brand);border-color:var(--brand);color:#fff}.conversation-exchanges .exchange-answer p,.conversation-exchanges .exchange-clarification p{color:var(--brand-ink)}.conversation-exchanges .exchange-followup{margin-left:20px}.conversation-exchanges .exchange-continue{font:inherit;border:1px solid var(--line-strong);border-radius:var(--r-pill);background:var(--surface);height:38px;color:var(--ink);cursor:pointer;margin:4px 0 0 36px;padding:0 16px;font-size:13.5px;font-weight:600}.conversation-exchanges .exchange-continue:hover{border-color:var(--ink)}.conversation-background{border-top:1px solid var(--line);margin:24px 0;padding:20px 0}.conversation-background>summary{cursor:pointer;font-size:15px;font-weight:600}.conversation-background p{color:var(--ink-2);font-size:15px;line-height:1.7}@media (max-width:640px){.conversation-exchanges .exchange-step{grid-template-columns:26px minmax(0,1fr);gap:10px;padding:12px}.conversation-exchanges .exchange-answer,.conversation-exchanges .exchange-clarification,.conversation-exchanges .exchange-followup,.conversation-exchanges .exchange-continue{margin-left:0}}
.deep-content{overflow-wrap:anywhere;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);margin-top:22px;padding:26px;font-size:1rem;line-height:1.7}.deep-kicker{letter-spacing:.14em;text-transform:uppercase;width:fit-content;color:var(--brand);align-items:center;gap:8px;margin:0 0 12px;font-size:12px;font-weight:600;display:flex}.deep-kicker:before{content:"";background:currentColor;border-radius:2px;width:18px;height:2px}.deep-content h2{margin:0 0 10px;font-size:26px}.deep-content h3{margin:18px 0 8px;font-size:18px}.deep-content>p{color:var(--ink-2);margin:0 0 8px}.deep-thread-head{align-items:flex-start;gap:16px;margin-bottom:20px;display:flex}.deep-thread-head>svg{background:var(--brand-soft);width:44px;height:44px;color:var(--brand);border-radius:12px;flex:none;padding:10px}.deep-thread-head strong{border-radius:var(--r-pill);background:var(--surface-3);margin-top:8px;padding:6px 12px;font-size:13px;display:inline-block}.deep-contributions{gap:12px;display:grid}.deep-contribution{border-radius:var(--r-md);background:var(--surface-2);border:1px solid var(--line);padding:18px 20px}.deep-contribution[data-nested=true]{border-left:3px solid var(--brand-soft);margin-left:28px}.deep-contribution>header{align-items:center;gap:10px;margin-bottom:10px;display:flex}.deep-contribution>header div{display:grid}.deep-contribution>header strong{font-size:14px}.deep-author-icon{background:var(--ink);color:#fff;border-radius:50%;place-items:center;width:32px;height:32px;display:grid}.deep-meta{color:var(--muted);font-size:12.5px}.deep-parent{color:var(--brand-ink);margin-bottom:8px;font-size:13px;font-weight:600;display:inline-block}.deep-contribution h3{margin:0 0 8px;font-size:17px}.deep-contribution p{color:var(--ink-2);margin:0 0 10px;font-size:15px}.deep-contribution p:last-child{margin-bottom:0}.deep-source-links{flex-wrap:wrap;gap:8px;margin-top:8px;display:flex}.deep-source-links a{border-radius:var(--r-pill);background:var(--surface);border:1px solid var(--line);color:var(--ink-2);padding:5px 10px;font-size:12.5px}.deep-faq{gap:8px;margin-top:12px;display:grid}.deep-faq details{border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface-2);padding:0 18px}.deep-faq summary{cursor:pointer;justify-content:space-between;gap:12px;padding:14px 0;font-size:15.5px;font-weight:600;list-style:none;display:flex}.deep-faq summary::-webkit-details-marker{display:none}.deep-faq summary:after{content:"+";color:var(--muted)}.deep-faq details[open] summary:after{content:"−"}.deep-faq details p{color:var(--ink-2);margin:0 0 14px;font-size:15px}.deep-case-columns{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin-top:14px;display:grid}.deep-case-columns>div{background:var(--surface-2);border-radius:var(--r-md);border:1px solid var(--line);padding:18px 20px}.deep-case-columns h3{margin-top:0}.deep-case-columns li{color:var(--ink-2);margin-bottom:10px;font-size:15px}.deep-personal .deep-contribution{margin:12px 0}.deep-personal .deep-contribution>strong{margin-bottom:6px;font-size:14px;display:block}.deep-personal form{gap:16px;margin-top:20px;display:grid}.deep-personal label{gap:8px;font-size:14px;font-weight:600;display:grid}.deep-personal select,.deep-personal textarea{border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface-2);width:100%;font:inherit;padding:11px 14px;font-size:15px;font-weight:400}.deep-personal textarea{resize:vertical;min-height:120px}.deep-personal select:focus,.deep-personal textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);background:var(--surface);outline:0}.deep-personal button{border-radius:var(--r-pill);background:var(--brand);color:#fff;height:44px;font:inherit;cursor:pointer;border:0;justify-self:start;padding:0 18px;font-size:14px;font-weight:600}.deep-personal button:disabled{background:var(--surface-3);color:var(--muted);cursor:default}.deep-personal p[role=status]{color:#0b7a55;margin:0;font-size:14px}.deep-personal p[role=alert]{color:#9a2f2f;margin:0;font-size:14px}
.module-guide{padding:clamp(48px, 6vw, 80px) var(--inline);background:var(--surface);border-top:1px solid var(--line);overflow-wrap:anywhere;font-size:1rem;line-height:1.7}.module-guide>header{max-width:720px;margin-bottom:28px}.module-guide>header p{letter-spacing:.14em;text-transform:uppercase;color:var(--brand);align-items:center;gap:8px;margin:0 0 14px;font-size:12px;font-weight:600;display:inline-flex}.module-guide>header p:before{content:"";background:currentColor;border-radius:2px;width:18px;height:2px}.module-guide>header h2{margin:0 0 10px}.module-guide>header span{color:var(--muted);font-size:16px}.module-guide-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;display:grid}.module-guide-grid article{background:var(--bg);border:1px solid var(--line);border-radius:var(--r-lg);align-content:start;gap:8px;padding:22px 24px;display:grid}.module-guide-grid article>span{font-family:var(--display);color:var(--brand);letter-spacing:-.03em;font-size:22px;font-weight:600}.module-guide-grid h3{margin:0;font-size:18px}.module-guide-grid p{color:var(--ink-2);margin:0;font-size:14.5px;line-height:1.6}.module-guide-grid a{color:var(--brand-ink);margin-top:6px;font-size:14px;font-weight:600}