.nea-learning{margin:0;background:#f3f6f9;color:#193043;font:17px/1.7 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.nea-learning *,.nea-hub *{box-sizing:border-box}.nea-learning a,.nea-hub a{color:#096c7c;text-underline-offset:3px}.nea-top{display:flex;justify-content:space-between;gap:20px;padding:20px 4vw;background:#102d40;color:#fff}.nea-top a{color:#fff;font-size:21px;font-weight:750}.nea-layout{display:grid;grid-template-columns:300px minmax(0,900px);max-width:1250px;margin:auto;gap:28px;padding:28px 20px}.nea-sidebar{background:#fff;border-radius:14px;padding:24px;align-self:start}.nea-sidebar h2{font-size:20px}.nea-sidebar ol{padding-left:22px}.nea-sidebar li{margin:12px 0;font-size:14px}.nea-sidebar [aria-current=page]{font-weight:800;color:#102d40}.nea-sidebar progress{width:100%;accent-color:#0b7b88}.nea-lesson{background:white;border-radius:14px;padding:clamp(20px,4vw,52px);min-width:0}.nea-lesson h1{font-size:clamp(28px,4vw,42px);line-height:1.2}.nea-lesson h2{line-height:1.35;margin-top:36px;font-size:26px}.nea-lesson h3{font-size:21px}.nea-lesson img{max-width:100%;height:auto}.nea-lesson table{display:block;overflow-x:auto;border-collapse:collapse;font-size:15px;max-width:100%}.nea-lesson td,.nea-lesson th{padding:10px;border:1px solid #d7e1e8;text-align:left}.nea-lesson th{background:#eaf1f5}.nea-lesson pre{background:#102536;color:#eef6ff;padding:20px;overflow-x:auto;border-radius:8px;font-size:14px}.nea-lesson code{overflow-wrap:anywhere}.nea-lesson blockquote{border-left:4px solid #128396;padding-left:20px;margin-left:0}.nea-notice{background:#edf5f6;border-left:4px solid #168592;padding:16px;font-size:14px}.nea-eyebrow{text-transform:uppercase;letter-spacing:.1em;font-size:12px;font-weight:750}.nea-practice fieldset{border:1px solid #cedbe4;border-radius:8px;padding:20px;margin:24px 0}.nea-practice legend{font-weight:700;padding:0 8px}.nea-practice label{display:flex;gap:12px;margin:12px 0;cursor:pointer}.nea-practice input{width:18px;height:18px;flex-shrink:0;margin-top:5px}.nea-learning button{background:#096c7c;color:white;border:0;border-radius:7px;padding:13px 22px;font:inherit;font-weight:650;cursor:pointer;margin:20px 0}.nea-learning :focus-visible,.nea-hub :focus-visible{outline:3px solid #c77700;outline-offset:4px}.nea-feedback{padding:14px;background:#edf4ec;border-left:4px solid #427e3b}.nea-next{display:flex;justify-content:space-between;gap:20px;margin-top:24px}.nea-skip{position:absolute;left:-9999px}.nea-skip:focus{left:16px;top:12px;background:white;padding:12px;z-index:5}.nea-hub{margin:32px 0;padding:clamp(20px,4vw,40px);border-radius:16px;background:#f2f7f9;color:#193043}.nea-hub h2{font-size:32px}.nea-options{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0}.nea-options a{background:white;border:1px solid #c6d8df;padding:10px 16px;border-radius:8px}.nea-hub details{border-top:1px solid #cbdce3;padding:18px 0;scroll-margin-top:90px}.nea-hub summary{font-size:20px;font-weight:700;cursor:pointer}.nea-course-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:18px;margin:20px 0}.nea-course-list article{padding:24px;border-radius:10px;background:white;border:1px solid #d6e2e8}.nea-course-list h3{font-size:21px}.nea-course-list p,.nea-course-list li{font-size:15px}.nea-course-list li{margin:8px 0}@media(max-width:800px){.nea-layout{grid-template-columns:1fr;padding:12px}.nea-sidebar{max-height:270px;overflow:auto}.nea-top{flex-direction:column;gap:5px}.nea-lesson{padding:22px}.nea-learning{font-size:16px}}@media print{.nea-sidebar,.nea-top,.nea-next,form{display:none}.nea-layout{display:block}.nea-lesson{padding:0}}

/* Classroom 1.1 — focused learning workspace */
.nea-learning{--ink:#192b31;--muted:#64777d;--line:#e2e8e7;--accent:#126b59;background:#f7f9f8;color:var(--ink);font:16px/1.75 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
.nea-learning a{color:var(--accent)}
.nea-top{height:78px;position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--line);padding:0 32px;align-items:center;gap:30px;color:var(--ink)}
.nea-top .nea-brand{display:flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none;font-size:20px;line-height:1.2;flex-shrink:0;letter-spacing:-.6px}
.nea-brand-mark{display:grid;place-items:center;width:40px;height:40px;background:#153e35;color:#c8ee9b;border-radius:11px;font-weight:850;font-size:22px}
.nea-brand small{display:block;font-size:9px;letter-spacing:3px;margin-top:5px;color:#667c75}
.nea-top-course{font-size:13px;color:var(--muted);margin-right:auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;border-left:1px solid var(--line);padding-left:28px}
.nea-top .nea-back{font-size:13px;font-weight:600;color:#354f46;text-decoration:none;border:1px solid var(--line);padding:8px 14px;border-radius:7px;white-space:nowrap}
.nea-layout{display:grid;grid-template-columns:278px minmax(0,800px) 190px;max-width:1440px;margin:auto;gap:36px;padding:36px 28px 72px}
.nea-sidebar{background:transparent;border-radius:0;padding:0 20px 0 0;position:sticky;top:108px;max-height:calc(100vh - 136px);overflow:auto;scrollbar-width:thin;align-self:start;border-right:1px solid var(--line)}
.nea-course-heading{padding:0 8px 25px}.nea-course-heading h2{font-size:20px;font-weight:700;line-height:1.4;letter-spacing:-.5px;margin:8px 0 25px}.nea-course-heading .nea-eyebrow{color:#62796e;font-size:10px}
.nea-progress-label{display:flex;justify-content:space-between;font-size:11px;color:var(--muted)}.nea-progress-label strong{color:var(--accent)}.nea-sidebar progress{height:5px;display:block;margin:10px 0;border:0;border-radius:20px;background:#e3e9e5;accent-color:var(--accent)}.nea-sidebar progress::-webkit-progress-bar{background:#e3e9e5;border-radius:20px}.nea-sidebar progress::-webkit-progress-value{background:var(--accent);border-radius:20px}.nea-progress-detail{font-size:10px;color:var(--muted);margin:0}
.nea-curriculum summary{font-size:12px;font-weight:750;cursor:pointer;padding:8px}.nea-curriculum summary span{font-size:10px;font-weight:400;color:var(--muted);margin-left:8px}.nea-search{padding:10px 8px}.nea-search label{font-size:10px;color:var(--muted)}.nea-search input{width:100%;padding:9px 10px;font:12px system-ui;border:1px solid #d5dfda;border-radius:6px;background:white;margin-top:5px}.nea-sidebar ol{padding:0;list-style:none;margin:10px 0}.nea-sidebar li{margin:3px 0}.nea-sidebar li a{display:flex;gap:11px;padding:11px 9px;border-radius:8px;text-decoration:none;color:#51625c;font-size:12px;line-height:1.45;border:1px solid transparent}.nea-sidebar li a:hover{background:#edf2ef}.nea-sidebar li a[aria-current=page]{background:#e6f0e8;color:#164f3f;border-color:#c6ddcb;font-weight:700}.nea-step{font-size:10px;display:grid;place-items:center;flex:0 0 23px;height:23px;border:1px solid #d7e0da;border-radius:50%;color:#698075;background:#fff}.nea-sidebar [aria-current=page] .nea-step{background:#17634e;color:white;border-color:#17634e}.nea-sidebar li small{display:block;font-size:9px;font-weight:400;color:#6f8279;margin-top:4px;text-transform:uppercase;letter-spacing:.5px}.nea-resource-link{display:block;border-top:1px solid var(--line);padding:18px 8px;font-size:12px;font-weight:650;text-decoration:none}.nea-search [hidden],[hidden]{display:none!important}
.nea-lesson{border:1px solid var(--line);box-shadow:0 6px 25px #203b2c04;border-radius:12px;padding:0;overflow:hidden;min-width:0}.nea-lesson-hero{padding:36px 42px 0;background:linear-gradient(125deg,#f5faf4,#fff 75%)}.nea-lesson-meta{display:flex;gap:14px;align-items:center;color:#718078;font-size:11px}.nea-pill{background:#e7f0dc;border:1px solid #d5e4c3;color:#42612c;text-transform:uppercase;letter-spacing:1px;font-size:9px;font-weight:750;padding:4px 9px;border-radius:5px}.nea-lesson h1{font-size:clamp(27px,2.8vw,39px);font-weight:750;letter-spacing:-1.3px;line-height:1.2;margin:20px 0 28px;max-width:650px}.nea-lesson-tools{display:flex;gap:24px;border-bottom:1px solid var(--line);font-size:11px}.nea-lesson-tools a{text-decoration:none;padding:0 0 14px;color:#526b5e;font-weight:650}.nea-lesson-tools a:first-child{border-bottom:2px solid var(--accent);color:var(--accent)}
.nea-pilot-note{margin:18px 42px 0;border-radius:6px;background:#faf8ed;color:#756b46;padding:9px 13px;font-size:10px;line-height:1.6}.nea-pilot-note summary{cursor:pointer;font-weight:600}.nea-pilot-note p{margin:10px 0 0}.nea-lesson>article{padding:18px 42px 28px}.nea-lesson article>p:first-child{font-size:17px;line-height:1.7;color:#52665e}.nea-lesson h2{font-size:23px;letter-spacing:-.5px;font-weight:700;margin:36px 0 15px;scroll-margin-top:104px}.nea-lesson h3{font-size:18px}.nea-lesson p,.nea-lesson li{font-size:14px;line-height:1.85}.nea-lesson li{margin-bottom:7px}.nea-lesson table{font-size:12px;border:1px solid #dde7e1;border-radius:7px;width:100%;margin:24px 0}.nea-lesson th{background:#f0f5f0;color:#365444}.nea-lesson td,.nea-lesson th{padding:12px 15px;border:0;border-bottom:1px solid #e2e9e4;line-height:1.6}.nea-lesson td{min-width:75px}.nea-lesson tr:last-child td{border-bottom:0}.nea-lesson pre{background:#152a27;border:1px solid #28413a;border-radius:8px;font-size:12px;line-height:1.8;padding:22px;color:#e1efe7}.nea-lesson :not(pre)>code{background:#eef3ef;color:#285841;border-radius:4px;padding:2px 4px;font-size:.9em}.nea-lesson blockquote{background:#f3f7f2;border:0;border-left:3px solid #81a96a;padding:12px 20px;border-radius:0 8px 8px 0}.nea-lesson img{border:1px solid var(--line);border-radius:8px;margin:20px 0}.nea-lesson hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.nea-practice{margin:0 24px 24px;padding:26px 22px;background:#f5f8f4;border:1px solid #e0e9dc;border-radius:10px;scroll-margin-top:100px}.nea-practice h2{margin-top:7px}.nea-practice fieldset{background:white;border-color:#dce5d8;padding:18px;margin:22px 0}.nea-practice legend{font-size:14px;line-height:1.65}.nea-practice label{padding:10px;border:1px solid #e4eae0;border-radius:6px;font-size:13px;line-height:1.6;margin:8px 0}.nea-practice label:has(input:checked){background:#eaf3e5;border-color:#9ebc8c}.nea-practice input{accent-color:#246947;width:16px;height:16px}.nea-learning button{background:#1a604b;border-radius:7px;padding:12px 20px;font-size:13px;margin:14px 0;box-shadow:0 2px 3px #142e1b10}.nea-learning button:hover{background:#124c3b}.nea-feedback{margin:20px 42px;background:#edf5e9;border-color:#5a8d43;font-size:13px}.nea-practice .nea-feedback{margin:10px 0}.nea-resource-card{margin:24px;background:#153d34;border-radius:10px;padding:27px;color:#f0f7f1;scroll-margin-top:100px}.nea-resource-card .nea-eyebrow{color:#b3d68d;font-size:9px}.nea-resource-card h2{color:#fff;margin-top:5px}.nea-resource-card p{color:#c4d6cc}.nea-resource-card a{color:#d7efb5;font-size:13px;font-weight:650}.nea-lesson>form{padding:0 42px;margin:0}.nea-next{padding:20px 42px;border-top:1px solid var(--line);font-size:12px;margin:12px 0 0}.nea-next a{text-decoration:none;font-weight:650}.nea-outline{position:sticky;top:114px;align-self:start;max-height:calc(100vh - 140px);overflow:auto;font-size:11px;scrollbar-width:thin}.nea-outline .nea-eyebrow{font-size:9px;color:#779080;margin:0 0 18px}.nea-outline nav{border-left:1px solid var(--line);display:flex;flex-direction:column;gap:0}.nea-outline nav a{padding:7px 0 7px 16px;font-size:11px;text-decoration:none;color:#6b7e73;line-height:1.5}.nea-outline nav a:hover{color:#1c6148;border-left:2px solid #1c6148;margin-left:-1px}.nea-outline-tip{margin-top:32px;padding:16px;border:1px solid #e2e8df;border-radius:7px;background:#f0f4ec;color:#5b715e}.nea-outline-tip p{margin:7px 0 0;font-size:11px}.nea-sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.nea-learning :focus-visible{outline:3px solid #c1842f;outline-offset:3px}#reading{scroll-margin-top:80px}
.nea-hub{background:#f3f7ef;border:1px solid #dbe7d2;color:#203d2d}.nea-hub h2{letter-spacing:-1px;font-size:36px}.nea-hub .nea-options a{border-color:#cbdcc1;color:#315d40;font-weight:650;font-size:13px}.nea-hub .nea-course-list article{border-color:#dce5d7;box-shadow:0 4px 15px #233c1704}.nea-hub summary{font-size:18px}.nea-hub .nea-notice{background:#eaf1df;border-color:#7c9b5a;color:#4a5f38}
@media(min-width:1500px){.nea-layout{gap:42px;grid-template-columns:290px minmax(0,830px) 190px;max-width:1480px}}
@media(max-width:1180px){.nea-layout{grid-template-columns:250px minmax(0,1fr);gap:24px}.nea-outline{display:none}.nea-top-course{max-width:350px}.nea-lesson-hero{padding:30px 30px 0}.nea-lesson>article{padding:18px 30px 26px}.nea-pilot-note{margin-left:30px;margin-right:30px}}
@media(max-width:900px){.nea-top{height:68px;padding:0 18px;flex-direction:row;gap:12px}.nea-top-course{display:none}.nea-top .nea-brand{font-size:18px}.nea-top .nea-back{margin-left:auto;font-size:11px}.nea-layout{display:block;padding:20px 16px 40px}.nea-sidebar{position:static;border:1px solid var(--line);border-radius:10px;background:white;max-height:none;padding:16px;margin-bottom:20px}.nea-course-heading{padding:0 0 12px}.nea-course-heading h2{font-size:17px;margin:6px 0 14px}.nea-curriculum nav{max-height:350px;overflow:auto}.nea-resource-link{display:none}.nea-curriculum summary{padding:9px 0 0}.nea-sidebar ol{margin-bottom:0}.nea-lesson{border-radius:10px}.nea-lesson h1{font-size:30px}.nea-lesson-hero{padding:26px 24px 0}.nea-lesson>article{padding:15px 24px 25px}.nea-pilot-note{margin:16px 24px 0}.nea-next{padding:18px 24px}.nea-lesson>form{padding:0 24px}.nea-feedback{margin:20px 24px}}
@media(max-width:480px){.nea-top{padding:0 12px}.nea-brand-mark{width:33px;height:33px;font-size:18px}.nea-top .nea-back{padding:6px 9px}.nea-layout{padding:12px 10px 30px}.nea-lesson-hero{padding:24px 20px 0}.nea-lesson h1{font-size:28px;letter-spacing:-.8px}.nea-lesson-tools{gap:18px;font-size:10px}.nea-lesson>article{padding:14px 20px 24px}.nea-pilot-note{margin:14px 20px 0}.nea-practice,.nea-resource-card{margin:16px 12px;padding:20px 14px}.nea-lesson-meta{font-size:10px;gap:10px}.nea-lesson p,.nea-lesson li{font-size:14px}.nea-next{padding:16px 20px;flex-wrap:wrap}.nea-hub h2{font-size:28px}}
@media print{.nea-top,.nea-sidebar,.nea-outline,.nea-pilot-note,.nea-lesson-tools,.nea-resource-card{display:none}.nea-layout{display:block;padding:0}.nea-lesson{border:0;box-shadow:none}.nea-lesson>article{padding:0}.nea-lesson-hero{padding:0}}