.atlas-shell{--atlas-ink:#24363b;--atlas-muted:#61767b;--atlas-line:#d5e0e2;--atlas-accent:#256d73;max-width:1540px;color:var(--atlas-ink);margin:auto;padding:24px 28px 56px}.atlas-library{border-bottom:1px solid var(--atlas-line);padding-bottom:20px}.atlas-organ-heading{justify-content:space-between;align-items:center;gap:32px;padding:26px 0 24px;display:flex}.atlas-organ-heading h1{font-family:var(--font-serif);letter-spacing:-.025em;margin:7px 0 0;font-size:clamp(32px,4vw,46px);font-weight:400;line-height:1.1}.atlas-organ-heading>p{max-width:465px;color:var(--atlas-muted);margin:0;font-size:14px;line-height:1.65}.atlas-caption{font-family:var(--font-mono);letter-spacing:.09em;text-transform:uppercase;color:var(--atlas-muted);font-size:10px}.atlas-workspace{grid-template-columns:minmax(0,1fr) 310px;align-items:start;gap:18px;display:grid}.atlas-viewer{border:1px solid var(--atlas-line);background:#fff;border-radius:20px;overflow:hidden}.atlas-specimen-stage{background:radial-gradient(at 48% 38%,#fcfdfd 0%,#edf2f3 65%,#e2e9eb 100%);height:clamp(460px,63vh,720px);min-height:460px;position:relative}.atlas-stage-heading{z-index:11;pointer-events:none;justify-content:space-between;align-items:baseline;display:flex;position:absolute;top:22px;left:24px;right:24px}.atlas-latin{font-family:var(--font-serif);color:var(--atlas-muted);font-size:17px;font-style:italic}.atlas-orbit-surface{outline:none;position:absolute;inset:56px 0 48px}.atlas-orbit-surface:focus-visible{box-shadow:inset 0 0 0 2px var(--atlas-accent)}.atlas-stage-caption{color:var(--atlas-muted);pointer-events:none;justify-content:space-between;gap:10px;font-size:11px;display:flex;position:absolute;inset:auto 24px 20px}.atlas-controls{border-top:1px solid var(--atlas-line);background:#fff;padding:14px}.atlas-control-row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.atlas-secondary,.atlas-primary,.atlas-settings-button{cursor:pointer;border-radius:9px;justify-content:center;align-items:center;gap:7px;min-height:40px;padding:9px 12px;font-size:12px;font-weight:500;line-height:1.4;display:inline-flex}.atlas-secondary{border:1px solid var(--atlas-line);color:var(--atlas-ink);background:#fff}.atlas-secondary:hover,.atlas-secondary[aria-pressed=true]{background:#eaf2f2;border-color:#a3c4c6}.atlas-primary{border:1px solid var(--atlas-accent);color:#fff;background:var(--atlas-accent)}.atlas-primary:hover{background:#1c565b}.atlas-settings-button{color:var(--atlas-muted);margin-left:auto}.atlas-settings-button:hover{background:#edf2f3}.atlas-settings{gap:18px;padding:20px 4px 4px;display:grid}.atlas-layer-list{flex-wrap:wrap;gap:4px 16px;padding-top:8px;display:flex}.atlas-layer-list label{cursor:pointer;align-items:center;gap:8px;min-height:40px;font-size:12px;display:flex}.atlas-layer-list input{accent-color:var(--atlas-accent);width:17px;height:17px}.atlas-study{border:1px solid var(--atlas-line);background:#fff;border-radius:20px;flex-direction:column;min-width:0;display:flex;overflow:hidden}.atlas-tabs{border-bottom:1px solid var(--atlas-line);grid-template-columns:repeat(3,1fr);gap:4px;padding:7px;display:grid}.atlas-tabs button{min-height:42px;color:var(--atlas-muted);cursor:pointer;border-radius:12px;justify-content:center;align-items:center;gap:6px;padding:8px 4px;font-size:12px;display:flex}.atlas-tabs button[aria-pressed=true]{color:var(--atlas-accent);background:#e8f1f1;font-weight:600}.atlas-panel-body{padding:21px 18px}.atlas-panel-title{margin:0;font-size:15px;font-weight:600;line-height:1.5}.atlas-instruction{color:var(--atlas-muted);margin:12px 0;font-size:13px;line-height:1.6}.atlas-selection{background:#edf4f3;border-radius:12px;margin-bottom:13px;padding:15px}.atlas-selection h3{margin:7px 0;font-size:17px;font-weight:500;line-height:1.3}.atlas-selection p{margin:0 0 12px;font-size:13px;line-height:1.65}.atlas-close{cursor:pointer;border-radius:6px;justify-content:center;align-items:center;width:30px;height:30px;margin:-6px -6px 0 0;display:flex}.atlas-close:hover{background:#d7e7e6}.atlas-structure-list{gap:2px;display:grid}.atlas-structure-list>button{text-align:left;cursor:pointer;border-radius:8px;align-items:center;gap:10px;min-height:44px;padding:11px 9px;font-size:12px;line-height:1.5;display:flex}.atlas-structure-list>button>span:nth-child(2){flex:1}.atlas-structure-list>button:hover{background:#f3f6f6}.atlas-structure-list>button[aria-pressed=true]{color:var(--atlas-accent);background:#e7f0f0;font-weight:600}.atlas-dot{border:1px solid #8da5aa;border-radius:50%;flex-shrink:0;width:6px;height:6px}.atlas-dot-visited{background:var(--atlas-accent);border-color:var(--atlas-accent)}.atlas-internal{color:var(--atlas-muted);font-size:9px}.atlas-model-note{border-top:1px solid var(--atlas-line);color:var(--atlas-muted);margin-top:auto;padding:14px 18px;font-size:11px}.atlas-model-note summary{cursor:pointer;min-height:24px}.atlas-model-note p{margin:9px 0 0;line-height:1.65}.atlas-progress{width:100%;height:3px;accent-color:var(--atlas-accent);background:#e5eded;border:none;border-radius:5px;margin:14px 0;overflow:hidden}.atlas-progress::-webkit-progress-bar{background:#e5eded}.atlas-progress::-webkit-progress-value{background:var(--atlas-accent)}.atlas-lesson-title{font-size:25px;line-height:1.25;font-family:var(--font-serif);margin:8px 0 14px;font-weight:400}.atlas-lesson-copy{margin:14px 0 22px;font-size:14px;line-height:1.75}.atlas-reflection{color:var(--atlas-muted);border-left:2px solid #a5c5c4;margin:24px 0;padding:14px 0 14px 15px;font-size:13px;line-height:1.65}.atlas-step-actions{justify-content:space-between;gap:8px;margin-top:28px;display:flex}.atlas-step-actions .atlas-primary{margin-left:auto}.atlas-quiz-options{gap:9px;display:grid}.atlas-quiz-options button{border:1px solid var(--atlas-line);text-align:left;cursor:pointer;border-radius:9px;min-height:46px;padding:12px;font-size:13px}.atlas-quiz-options button:hover:not(:disabled){border-color:var(--atlas-accent);background:#edf4f3}.atlas-quiz-options button[data-result=correct]{color:#285b47;opacity:1;background:#edf7f0;border-color:#357b60}.atlas-quiz-options button[data-result=incorrect]{color:#894634;opacity:1;background:#fff1ec;border-color:#b96b57}.atlas-feedback{margin-top:16px;font-size:13px;line-height:1.6}.atlas-complete{text-align:center;padding:25px 0}.atlas-complete>svg{color:var(--atlas-accent);margin:auto}.atlas-complete h2{margin:16px 0;font-size:28px}.atlas-complete p{color:var(--atlas-muted);margin-bottom:20px;font-size:14px;line-height:1.65}.atlas-reference{gap:20px;padding-top:30px;display:grid}.atlas-reference>div>article{display:block}.atlas-reference dl{max-width:740px}.atlas-shell button:focus-visible,.atlas-shell select:focus-visible,.atlas-shell summary:focus-visible{outline:2px solid var(--atlas-accent);outline-offset:3px}.atlas-shell button:disabled{cursor:default;opacity:.5}@container (max-width:850px){.atlas-workspace{grid-template-columns:minmax(0,1fr) 280px;gap:12px}.atlas-organ-heading{gap:22px}.atlas-organ-heading>p{max-width:350px;font-size:13px}.atlas-control-row{gap:6px}.atlas-settings-button{margin-left:0}}@container (max-width:780px){.atlas-workspace{grid-template-columns:1fr}.atlas-organ-heading{flex-direction:column;align-items:start;gap:12px;padding:22px 0}.atlas-organ-heading>p{max-width:none}.atlas-specimen-stage{height:440px;min-height:440px}.atlas-structure-list{grid-template-columns:repeat(2,minmax(0,1fr))}.atlas-study{border-radius:16px}}@media (max-width:600px){.atlas-shell{padding:16px 12px 40px}.atlas-library{padding-bottom:14px}.atlas-specimen-stage{height:380px;min-height:380px}.atlas-stage-heading{inset:17px 18px auto}.atlas-orbit-surface{bottom:70px}.atlas-view-toolbar{flex-direction:row;inset:auto auto 10px 50%;transform:translate(-50%)}.atlas-view-toolbar button{width:42px;height:42px}.atlas-stage-caption{font-size:10px;display:none;inset:auto 18px 17px}.atlas-structure-list{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){.atlas-shell *,.atlas-shell :before,.atlas-shell :after{transition-duration:0s!important;animation-duration:0s!important}}.atlas-facts{border-top:1px solid var(--atlas-line);grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:20px 48px;padding:28px 0;display:grid}.atlas-facts h2{margin:12px 0;font-size:23px;font-weight:400}.atlas-facts p{color:var(--atlas-muted);max-width:600px;font-size:13px;line-height:1.75}.atlas-facts dl{grid-template-columns:1fr 1fr;gap:20px;margin:0;display:grid}.atlas-facts dt{color:var(--atlas-muted);margin-bottom:5px;font-size:11px}.atlas-facts dd{margin:0;font-size:13px;line-height:1.6}.atlas-glossary{border-top:1px solid var(--atlas-line);grid-column:1/-1;padding-top:20px;font-size:13px}.atlas-glossary summary{cursor:pointer;min-height:30px}.atlas-glossary>div{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;padding-top:20px;display:grid}.atlas-glossary h3{font-size:14px;font-weight:600}.atlas-connections{border-top:1px solid var(--atlas-line);grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;padding:24px 0;display:grid}.atlas-connections h3{margin:10px 0;font-size:15px;font-weight:500}.atlas-connections p{color:var(--atlas-muted);font-size:13px;line-height:1.7}@container (max-width:780px){.atlas-facts,.atlas-connections{grid-template-columns:1fr;gap:24px}}.atlas-missed{gap:8px;margin-bottom:20px;display:grid}.atlas-complete>.atlas-primary,.atlas-complete>.atlas-secondary{width:100%;display:flex}.atlas-orbit-surface [role=note]:before{content:"";background:#88a5a8;width:16px;height:1px;position:absolute;top:14px}.atlas-orbit-surface [data-side=right] [role=note]:before{left:-16px}.atlas-orbit-surface [data-side=left] [role=note]:before{right:-16px}.atlas-orbit-surface [data-vside=top] [role=note]:before{top:auto;bottom:14px}@media (pointer:coarse){.atlas-viewer [role=toolbar] button{width:44px;height:44px}}.atlas-workspace{grid-template-columns:minmax(0,1fr) 270px}.atlas-body-location{border:1px solid var(--atlas-line);background:#f6f8f8;border-radius:20px;grid-area:1/2;padding:20px 16px 16px;overflow:hidden}.atlas-body-location header h2{margin:6px 0 0;font-size:15px;font-weight:500}.atlas-body-stage{touch-action:none;background:radial-gradient(#f9fbfa,#e7efee);border-radius:12px;height:390px;margin:14px 0 8px;position:relative}.atlas-body-key{background:#167f89;border-radius:50%;width:8px;height:8px;margin-right:7px;display:inline-block}.atlas-body-focus{color:#256d73;cursor:pointer;background:#fff;border:1px solid #b7cecf;border-radius:8px;justify-content:center;align-items:center;gap:7px;width:100%;min-height:38px;margin-bottom:10px;font-size:12px;display:flex}.atlas-body-focus:hover{background:#e6f1f0}.atlas-body-loading{text-align:center;color:var(--atlas-muted)}.atlas-body-orientation{pointer-events:none;font:10px var(--font-mono);color:var(--atlas-muted);justify-content:space-between;display:flex;position:absolute;inset:36% 10px auto}.atlas-body-views{border:1px solid var(--atlas-line);border-radius:9px;grid-template-columns:repeat(3,1fr);gap:4px;padding:3px;display:grid}.atlas-body-views button{cursor:pointer;border-radius:6px;min-height:36px;font-size:11px}.atlas-body-views button[aria-pressed=true]{color:var(--atlas-accent);background:#fff;box-shadow:0 1px 3px #24363b15}.atlas-body-description{margin:14px 0 8px;font-size:12px;line-height:1.65}.atlas-body-scale{color:var(--atlas-muted);font-size:10px;line-height:1.5}.atlas-workspace>.atlas-study{grid-column:1/-1}@container (min-width:1200px){.atlas-workspace{grid-template-columns:minmax(0,1fr) 260px 285px}.atlas-workspace>.atlas-study{grid-area:1/3}}@container (max-width:780px){.atlas-workspace{grid-template-columns:minmax(0,1fr)}.atlas-body-location{grid-area:auto/1;grid-template-columns:minmax(130px,42%) minmax(0,1fr);align-items:start;column-gap:15px;display:grid}.atlas-body-location header{grid-area:1/2}.atlas-body-stage{grid-area:1/1/6;height:350px;margin:0}.atlas-body-focus{grid-area:2/2;margin:8px 0}.atlas-body-views{grid-area:3/2;align-self:center}.atlas-body-description{grid-area:4/2}.atlas-body-scale{grid-area:5/2}}