:root{color-scheme:dark;--bg:#101b26;--panel:#152633;--text:#edf2f5;--muted:#aabdca;--line:#314552;--teal:#99dac8;--lav:#cabbec;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:18px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);line-height:1.65}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:4px}button,input{font:inherit}button{cursor:pointer;background:#1b2d3b;color:var(--text);border:1px solid var(--line);border-radius:7px;padding:10px 15px}button:hover{background:#2b3c4b}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--teal);outline-offset:4px}[hidden]{display:none!important}h1,h2,p{margin-top:0}.site-header{max-width:1440px;margin:auto;display:flex;justify-content:space-between;align-items:center;gap:24px;padding:26px 40px;border-bottom:1px solid var(--line)}.collection-brand{display:flex;gap:12px;align-items:center;font-size:21px;font-weight:550;letter-spacing:-.4px}.brand-mark{display:grid;place-items:center;font-family:Georgia,serif;width:38px;height:38px;background:#253e48;border:1px solid #527b81;border-radius:9px;font-size:28px;color:#b1e2d6}.author-link{font-size:16px;color:var(--muted)}main{max-width:1360px;padding:0 40px;margin:auto}.intro{padding:64px 0 48px;max-width:1000px}.eyebrow{font-size:12px;letter-spacing:2px;color:var(--teal);font-weight:600;margin-bottom:20px}h1{font-size:clamp(36px,4.4vw,59px);letter-spacing:-2.1px;font-weight:450;line-height:1.12;margin-bottom:24px}.intro-copy{max-width:710px;font-size:21px;color:#b7cbd5;margin-bottom:24px}.intro-labels{display:flex;gap:11px 23px;flex-wrap:wrap;color:#8eabb9;font-size:14px}.intro-labels span:before{content:'+';color:var(--teal);margin-right:7px}.collection-toolbar{display:flex;justify-content:space-between;align-items:center;gap:20px;border-top:1px solid var(--line);padding-top:28px;margin-bottom:12px}.filter-buttons{display:flex;gap:8px;flex-wrap:wrap}.filter-buttons button{font-size:15px;background:none;padding:10px 13px;white-space:nowrap}.filter-buttons button.active{border-color:#83b5ad;background:#253b43;color:#c9f0e4}.search{width:280px;max-width:100%;flex-shrink:0}.search input{width:100%;font-size:16px;background:#0d1822;color:var(--text);border:1px solid var(--line);padding:11px 14px;border-radius:7px}.search input::placeholder{color:#8ea4b4}.results-status{font-size:14px;color:#8da7b8;margin:18px 0}.atlas-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.atlas-card{min-width:0;background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;flex-direction:column}.atlas-art{position:relative;background:radial-gradient(ellipse at 50% 75%,#234453,#10232f);border-bottom:1px solid var(--line);height:235px;overflow:hidden}.atlas-art svg{width:100%;height:205px;display:block}.atlas-art>span{position:absolute;bottom:13px;left:23px;font-size:13px;color:#abcfda}.art-lymph-atlas{background:radial-gradient(ellipse at 50% 80%,#204b46,#142833)}.art-cardio-atlas{background:radial-gradient(ellipse at 50% 70%,#483244,#172633)}.art-tnm-atlas{background:radial-gradient(ellipse at 50% 80%,#35314a,#182330)}.atlas-card-body{padding:26px;display:flex;flex-direction:column;flex:1}.atlas-kind{font-size:12px;letter-spacing:1.2px;text-transform:uppercase;color:var(--teal);margin-bottom:12px}.atlas-card h2{font-size:30px;font-weight:500;letter-spacing:-.8px;line-height:1.2;margin-bottom:16px}.atlas-description{font-size:18px;color:#b7cbd7;line-height:1.65;margin-bottom:19px}.features{list-style:none;margin:0 0 28px;padding:0;color:#cdd9e1;font-size:16px;line-height:1.55}.features li{position:relative;padding-left:17px;margin-bottom:10px}.features li:before{content:'';position:absolute;left:0;top:10px;width:5px;height:5px;border-radius:50%;background:#8caeae}.card-actions{margin-top:auto;display:flex;gap:14px;align-items:center;flex-wrap:wrap}.open-atlas{border:1px solid #607d85;color:#d6efe9;background:#26404a;border-radius:7px;padding:10px 14px;font-size:16px;display:inline-flex;gap:18px;align-items:center}.open-atlas:hover{background:#355461;text-decoration:none}.secondary-link{font-size:15px;color:#cbbde7}.source-link{font-size:14px;color:#96b5bd;margin-top:20px;align-self:flex-start}.empty-state{border:1px dashed #59707e;border-radius:12px;padding:35px;text-align:center;color:var(--muted)}.empty-state h2{font-size:25px;color:var(--text);font-weight:500}.collection-note{margin:50px 0 0;padding:32px 0 40px;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:70px}.collection-note h2{font-size:25px;letter-spacing:-.5px;font-weight:500;margin-bottom:12px}.collection-note p{color:var(--muted);font-size:17px;margin:0}.collection-note a{color:var(--teal)}.collection-note .scope-note{font-size:15px;align-self:center;max-width:520px}footer{max-width:1360px;margin:auto;padding:24px 40px 36px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:24px;font-size:14px;color:#93adbd}footer nav{display:flex;gap:25px;flex-wrap:wrap}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.skip-link{position:absolute;top:-100px;left:20px;z-index:10;background:#295447;padding:12px 18px;border-radius:7px}.skip-link:focus{top:10px}@media(max-width:1100px){.atlas-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.atlas-card-body{padding:23px}.collection-toolbar{align-items:flex-start;flex-direction:column}.search{width:100%;max-width:420px}.collection-note{gap:35px}}@media(max-width:700px){:root{font-size:17px}.site-header{padding:18px 20px;gap:15px}.collection-brand{font-size:17px}.brand-mark{width:32px;height:32px;font-size:23px}.author-link{font-size:13px}main{padding:0 20px}.intro{padding:38px 0 30px}h1{font-size:36px;letter-spacing:-1.2px}.intro-copy{font-size:18px}.eyebrow{font-size:10px;letter-spacing:1.4px}.intro-labels{font-size:13px;gap:7px 15px}.atlas-grid{grid-template-columns:1fr;gap:21px}.atlas-description{font-size:17px}.atlas-art{height:215px}.atlas-art svg{height:185px}.filter-buttons button{font-size:14px;padding:10px 11px}.collection-toolbar{padding-top:22px;gap:15px}.search{max-width:none}.atlas-card h2{font-size:28px}.collection-note{grid-template-columns:1fr;gap:24px;margin-top:35px}.collection-note p{font-size:17px}.collection-note .scope-note{font-size:14px}footer{padding:23px 20px;flex-direction:column;gap:14px;font-size:13px}footer nav{gap:20px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}@media print{body{background:#fff;color:#000}.collection-toolbar,.results-status,.intro-labels{display:none!important}.atlas-grid{display:block}.atlas-card{break-inside:avoid;background:#fff;margin-bottom:20px}.atlas-art{display:none}.atlas-description,.features{color:#333}.collection-note p,footer{color:#444}}

.learning-links{margin:60px 0;border-top:1px solid var(--line);padding-top:36px}.learning-heading .eyebrow{margin-bottom:10px}.learning-heading h2{font-size:30px;font-weight:500;line-height:1.3}.learning-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.learning-grid article{border:1px solid var(--line);border-radius:10px;background:var(--panel);padding:24px;display:flex;flex-direction:column}.learning-grid h3{font-size:23px;line-height:1.35;margin:0 0 14px;font-weight:550}.learning-grid p:not(.atlas-kind){font-size:18px;color:var(--muted)}.guide-link{font-size:16px;color:var(--teal);margin-top:auto}.learning-grid .atlas-kind{font-size:12px}@media(max-width:800px){.learning-grid{grid-template-columns:1fr}.learning-links{margin:40px 0}}