:root{color-scheme:dark;--bg:#0b1422;--panel:#121f31;--line:#2c3a4d;--text:#f5f7fb;--muted:#bbc6d5;--green:#73dbaa;--blue:#2878e8}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 Arial,Helvetica,sans-serif}a{color:#99c5ff;text-underline-offset:4px}button,a{touch-action:manipulation}a:focus-visible,button:focus-visible,[tabindex]:focus-visible{outline:3px solid #f5cd72;outline-offset:5px}.skip{position:absolute;top:-100px;background:white;color:black;padding:12px}.skip:focus{top:8px;z-index:10}header,main,footer{max-width:1200px;margin:auto}header{padding:24px 36px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:14px;font-weight:700;letter-spacing:1px;line-height:1.4}.brand img{width:66px;height:66px;object-fit:contain;background:white;border-radius:5px}.brand small{display:block;font-size:12px;letter-spacing:1.4px;font-weight:400}.portal-label{font-size:12px;letter-spacing:1.4px;color:var(--muted)}main{padding:34px 36px 60px}.intro{display:grid;grid-template-columns:1.5fr 1fr;gap:48px;align-items:center}.eyebrow{font-size:12px;letter-spacing:2px;font-weight:700;color:var(--green);margin:0 0 10px}h1{font-size:clamp(2.6rem,5vw,4.1rem);line-height:1.1;letter-spacing:-2px;margin:14px 0 20px}h1 span{color:var(--green)}h2{font-size:1.45rem;line-height:1.3;margin:0 0 14px}h3{font-size:1.05rem;margin:0 0 8px}p{margin:0 0 16px;color:var(--muted)}.welcome{max-width:570px;font-size:1.1rem}.schedule{display:flex;gap:10px 22px;flex-wrap:wrap;font-size:14px}.schedule span{padding:3px 0}.access{background:var(--panel);border:1px solid var(--line);border-top:3px solid var(--blue);padding:26px;border-radius:8px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:10px 20px;text-decoration:none;font-size:16px;font-weight:700;border-radius:5px}.blue{background:var(--blue);color:white;display:flex}.blue:hover{background:#3b8af4}.outline{border:1px solid #63748d;color:white}.outline:hover{background:#22334b}.caption{font-size:14px;margin-top:12px;line-height:1.5}.text-link{font-size:16px}.bookmark{margin:30px 0 24px;background:#142f2a;border:1px solid #2a5445;padding:14px 20px;border-radius:5px;font-weight:700;color:#a6f0ca}.bookmark span{font-weight:400;color:#d2e5da;margin-left:20px}.notes{display:grid;grid-template-columns:200px 1fr;gap:24px;padding:25px 0 26px;border-bottom:1px solid var(--line)}.notes-label{font-size:12px;letter-spacing:1.4px;font-weight:700;color:var(--green);padding-top:6px}.notes p:last-child{margin:0}.section-title{display:flex;align-items:end;justify-content:space-between;margin:30px 0 22px}.section-title h2{font-size:1.8rem;margin:0}.section-title>span{font-size:14px;color:var(--muted)}.tabs{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.tabs button{background:#142134;color:var(--muted);border:1px solid var(--line);border-radius:6px 6px 0 0;padding:13px 16px;font:700 16px/1.5 Arial;text-align:left;cursor:pointer}.tabs small{display:block;font-size:14px;font-weight:400}.tabs button[aria-selected=true]{background:var(--green);color:#092419;border-color:var(--green)}.tabs button:hover{border-color:var(--green)}#lesson{background:var(--panel);border:1px solid var(--line);border-radius:0 0 8px 8px;padding:30px;display:grid;grid-template-columns:1.3fr 1fr;gap:40px;min-height:270px}#lesson h2{font-size:1.9rem}#lesson ul{margin:0 0 20px;padding-left:20px;color:var(--muted)}.lesson-date{font-size:14px;color:var(--green);font-weight:700;margin-bottom:10px}.activity{border-left:1px solid var(--line);padding-left:30px}.lower{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:28px}.lower>article{border:1px solid var(--line);border-radius:8px;padding:26px}.status{display:inline-block;font-size:14px;color:#e9cc8e;background:#332c20;padding:5px 10px;border-radius:4px;margin-bottom:16px}.help{margin-top:28px;padding-top:22px;border-top:1px solid var(--line)}.help p{font-size:14px;margin-bottom:8px}footer{padding:22px 36px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;font-size:14px;color:var(--muted)}@media(max-width:760px){header{padding:18px 20px}.portal-label{display:none}main{padding:24px 20px 40px}.intro{grid-template-columns:1fr;gap:24px}.bookmark span{display:block;margin:4px 0 0}.notes{grid-template-columns:1fr;gap:12px}.section-title{display:block}.section-title>span{display:block;margin-top:10px}.tabs{gap:4px}.tabs button{padding:10px 6px;text-align:center;font-size:14px}.tabs small{font-size:12px}#lesson{grid-template-columns:1fr;gap:22px;padding:24px}.activity{border-left:0;border-top:1px solid var(--line);padding:22px 0 0}.lower{grid-template-columns:1fr}footer{flex-direction:column;padding:20px}.brand{font-size:14px}.brand small{font-size:10px}.brand img{width:50px;height:50px}}@media(prefers-reduced-motion:no-preference){a,button{transition:background .15s,border-color .15s}}

.microcredentials{margin-top:38px;border-top:1px solid var(--line);padding-top:6px}.credential-list{list-style:none;padding:0;margin:24px 0 0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.credential-list li{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:22px;display:flex;flex-direction:column;justify-content:space-between;gap:22px}.credential-list h3{margin:0;font-size:1.05rem;line-height:1.5}.credential-list a{font-size:14px;font-weight:700;align-self:flex-start;min-height:44px;display:inline-flex;align-items:center}@media(max-width:900px){.credential-list{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:560px){.credential-list{grid-template-columns:1fr}}

.blackbelt{display:grid;grid-template-columns:1.45fr 1fr;gap:40px;margin-top:38px;padding:32px;background:#111e2e;border:1px solid #a88c4c;border-top:4px solid #d9b86b;border-radius:8px}.blackbelt .eyebrow{color:#efd398}.blackbelt h2{font-size:clamp(1.6rem,3vw,2.2rem);line-height:1.25}.blackbelt ul{color:var(--muted);padding-left:20px;margin:0 0 20px}.bb-offer{padding:24px;background:#0c1623;border:1px solid var(--line);border-radius:6px;align-self:center}.standard-price{font-size:14px;margin-bottom:4px}.bb-price{font-size:3.2rem;line-height:1.2;font-weight:700;color:#f6d88f;letter-spacing:-1px;margin:8px 0}.bb-saving{font-size:16px}.bb-button{display:flex;background:#f0cc7c;color:#17202c}.bb-button:hover{background:#ffe0a1}.bb-offer .caption{margin-bottom:0}@media(max-width:760px){.blackbelt{grid-template-columns:1fr;gap:20px;padding:24px}.bb-offer{padding:22px}}