:root{--ink:#143a43;--muted:#576e76;--teal:#007e82;--teal-dark:#005a60;--line:#dce8ea;--tint:#eff8f8;--orange:#b04b29;--orange-pale:#fff4ed;--white:#fff;--bg:#f5f8f9;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--ink);font-size:16px;background:var(--bg)}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,select,input{touch-action:manipulation}button{cursor:pointer}button{color:inherit}a{color:var(--teal-dark);text-underline-offset:3px}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #cd872c;outline-offset:3px}button:disabled{cursor:default}.skip{position:absolute;top:-90px;left:20px;background:#fff;z-index:100;padding:12px}.skip:focus{top:10px}.platform-header{height:86px;display:flex;align-items:center;gap:38px;padding:0 32px;border-bottom:1px solid var(--line);background:#fff}.brand{display:flex;align-items:center;gap:11px;width:250px;text-decoration:none;line-height:1.15;font-size:14px}.brand-symbol{display:grid;place-items:center;width:45px;height:45px;border:2px solid var(--teal);border-radius:50%;font-size:14px;font-weight:800;letter-spacing:-.7px}.brand strong{font-size:17px}.breadcrumb{font-size:14px}.breadcrumb span{color:#9bb7bc;margin:0 11px}.header-note{font-size:13px;color:var(--muted);margin-left:auto}.workspace{display:grid;grid-template-columns:290px minmax(0,1fr);min-height:calc(100vh - 86px)}.sidebar{background:#fff;border-right:1px solid var(--line);padding:32px 18px;position:sticky;top:0;height:100vh;overflow:auto}.sidebar-top{padding:0 14px 22px}.eyebrow{font-size:12px;font-weight:750;letter-spacing:.09em;color:var(--teal);line-height:1.5}.sidebar h2{font-size:20px;line-height:1.4;letter-spacing:-.4px;margin:14px 0 10px}.muted{color:var(--muted);font-size:14px}.search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:8px;padding:0 12px;margin:0 8px 20px;background:var(--bg)}.search span{font-size:26px;color:var(--teal)}.search input{min-width:0;border:0;background:transparent;width:100%;font-size:14px;padding:12px 0;color:var(--ink)}.subtopic{border:0;background:transparent;text-align:left;width:100%;display:flex;gap:13px;padding:14px 13px;border-radius:8px;align-items:flex-start;font-size:14px;line-height:1.45;margin-bottom:4px}.subtopic .num{font-size:12px;line-height:20px;color:#729096;min-width:19px}.subtopic:hover{background:#f4f8f8}.subtopic.active{background:#e4f4f3;color:var(--teal-dark);font-weight:700}.subtopic.active .num{color:var(--teal)}.sidebar-bottom{border-top:1px solid var(--line);margin:26px 12px 0;padding-top:20px}.sidebar-bottom p{font-size:13px;line-height:1.6;color:var(--muted)}main{min-width:0;padding:36px clamp(24px,3.4vw,64px) 0;max-width:1510px;width:100%;margin:auto;background:#fff;align-self:start;min-height:calc(100vh - 86px)}.lesson-header{display:flex;justify-content:space-between;gap:24px;align-items:flex-start}h1{font-family:Georgia,Times New Roman,serif;font-size:clamp(28px,2.5vw,38px);line-height:1.22;font-weight:500;letter-spacing:-.7px;margin:10px 0 18px;max-width:690px}.competency-line{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}.competency-line button{border:1px solid #e0ebe9;background:#f4f8f8;border-radius:20px;padding:5px 10px;font-size:13px;color:var(--teal-dark)}.context{display:flex;flex-direction:column;gap:7px;min-width:188px;padding-top:5px}.context label{font-size:13px;color:var(--muted)}select{border:1px solid #b9d7db;border-radius:8px;padding:9px 32px 9px 12px;color:var(--teal-dark);background:#fff;font-weight:650;max-width:100%}.context span{font-size:12px;color:var(--muted)}.modebar{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);margin:25px 0 27px;gap:15px}.modebar [role=tablist]{display:flex;gap:25px}.modebar [role=tab]{border:0;border-bottom:3px solid transparent;background:transparent;padding:13px 1px;font-size:15px;font-weight:700;color:var(--muted)}.modebar [role=tab][aria-selected=true]{color:var(--teal);border-bottom-color:var(--teal)}.modebar [role=tab] span{font-size:12px;border-radius:5px;padding:2px 5px;background:#edf3f3}.text-button{border:0;background:transparent;color:var(--teal-dark);padding:0;font-size:14px;font-weight:650;text-align:left}.text-button:hover{text-decoration:underline}.takeaway{border-left:3px solid var(--teal);padding:3px 0 3px 19px;max-width:870px;margin-bottom:26px}.takeaway p{font-size:18px;line-height:1.65;margin:6px 0;color:var(--ink)}.takeaway .eyebrow{color:var(--muted)}.case-card{background:var(--tint);border:1px solid 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h2{font-size:21px}}@media(prefers-reduced-motion:no-preference){button,a{transition:background-color .15s,border-color .15s}.side-dialog[open]{animation:slide-in .2s ease-out}@keyframes slide-in{0%{transform:translate(25px);opacity:.6}to{transform:translate(0);opacity:1}}}.scope-button{font-size:12px;font-weight:450}.primary:disabled{opacity:.5}.primary:disabled:hover{background:var(--teal)}.source-link{text-decoration:none}.breadcrumb a{color:var(--teal-dark);font-weight:650;text-decoration:none}.breadcrumb a:hover{text-decoration:underline}.hub-link{margin-left:auto;border:1px solid #b9d7db;border-radius:20px;padding:8px 13px;color:var(--teal-dark);font-size:13px;font-weight:700;text-decoration:none;white-space:nowrap}.hub-link:hover{background:var(--tint)}@media(max-width:920px){.platform-header{gap:18px}.hub-link{font-size:0;padding:8px 10px}.hub-link:after{content:"← Topics";font-size:13px}}@media(max-width:620px){.breadcrumb{display:none}.hub-link{margin-left:auto}}