.nielson-app{z-index:60;--font-ui:"P22 Mackinac Pro", Charter, serif;--font-mono:"Fira Code", ui-monospace, monospace;--r-sm:8px;--r-md:12px;--r-lg:16px;--r-xl:20px;--ease-pop:cubic-bezier(.2, .9, .3, 1.2);--ease-soft:cubic-bezier(.25, .8, .25, 1);position:fixed;inset:0;overflow:hidden}:root[data-theme=dark] .nielson-app{--bg:#262624;--bg-deep:#1f1e1b;--panel:#30302e;--panel-2:#393937;--border:#3e3e3b;--border-soft:#34342f;--text:#e8e6e0;--muted:#9d9a92;--faint:#6f6c64;--ink:#e8e6e0;--accent:#b48cff;--accent-soft:#b48cff29;--accent-ink:#1d1231;--overlay:#0f0e0c99;--shadow:0 8px 30px #00000059;--danger:#e0655a;--danger-soft:#e0655a24;--good:#3fa860;--fig-blue:#6ea8ff;--fig-red:#ff7a6e;--fig-green:#5fcf86;--fig-orange:#ffa25c;--fig-purple:#c39bff;--fig-gold:#e9c25a;--fig-gray:#8d8a82;--fig-ink:#e8e6e0;--hover:#fff1;--hover-strong:#ffffff1a;--lab-graph:#6ea8ff;--lab-integral:#ffa25c;--lab-vectors:#c39bff;--lab-coords:#4fd1c5;--lab-surface:#5fcf86;--lab-multiple:#e9c25a;--lab-field:#ff7a6e;--c-grid:#ffffff0d;--c-axis:#ffffff47;--c-pos:#5fd89a;--c-neg:#f08a5d;--c-curve:#b48cff;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}:root[data-theme=light] .nielson-app{--bg:#faf9f4;--bg-deep:#f3f1e8;--panel:#fdfcf8;--panel-2:#f1efe4;--border:#e4e0d1;--border-soft:#ebe8dc;--text:#37332a;--muted:#8a8577;--faint:#b3ae9f;--ink:#37332a;--accent:#7a4fd1;--accent-soft:#7a4fd11f;--accent-ink:#fff;--overlay:#3c362866;--shadow:0 8px 30px #5a503724;--danger:#c94a3f;--danger-soft:#c94a3f1f;--good:#2f8f50;--fig-blue:#2f6fe0;--fig-red:#d2463a;--fig-green:#2b9455;--fig-orange:#d9711f;--fig-purple:#8a4fd8;--fig-gold:#b48712;--fig-gray:#9a958a;--fig-ink:#37332a;--hover:#483e260f;--hover-strong:#483e261a;--lab-graph:#2f6fe0;--lab-integral:#d9711f;--lab-vectors:#8a4fd8;--lab-coords:#1f9a8f;--lab-surface:#2b9455;--lab-multiple:#b48712;--lab-field:#d2463a;--c-grid:#483e2612;--c-axis:#483e2659;--c-pos:#1f9a5a;--c-neg:#d0612f;--c-curve:#7a4fd1;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}.nielson-app,.nielson-app *{box-sizing:border-box;margin:0;padding:0}.nielson-app{height:100%;font-family:var(--font-ui);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;transition:background .3s var(--ease-soft), color .3s var(--ease-soft);-webkit-user-select:none;user-select:none;font-size:14px;line-height:1.45}.nielson-app input,.nielson-app textarea{-webkit-user-select:text;user-select:text;font:inherit;color:inherit}.nielson-app button{font:inherit;color:inherit;cursor:pointer;background:0 0;border:none}.nielson-app .app{height:100vh;transition:grid-template-columns .3s var(--ease-soft);grid-template-columns:290px 1fr;display:grid;overflow:hidden}.nielson-app .app.sb-collapsed{grid-template-columns:0 1fr}.nielson-app .main{flex-direction:column;min-width:0;height:100vh;display:flex;overflow:hidden}.nielson-app :focus-visible{outline:2px solid var(--accent);outline-offset:2px}.nielson-app button:disabled{cursor:default;opacity:.45}.nielson-app .nav-item{border-radius:var(--r-sm);text-align:left;width:100%;color:var(--muted);transition:background .13s var(--ease-soft), color .13s;align-items:center;gap:10px;padding:8px 10px;font-size:13.5px;display:flex}.nielson-app .nav-item:hover{background:var(--hover);color:var(--text)}.nielson-app .nav-item.active{background:var(--hover-strong);color:var(--text)}.nielson-app .nav-ico{color:var(--faint);transition:color .13s, transform .2s var(--ease-pop);display:inline-flex}.nielson-app .nav-item:hover .nav-ico{transform:scale(1.12)}.nielson-app .pill-btn{border:1px solid var(--border);background:var(--panel);white-space:nowrap;transition:background .15s, transform .15s var(--ease-soft), border-color .15s, filter .15s;border-radius:999px;align-items:center;gap:6px;padding:6px 13px;font-size:13px;display:inline-flex}.nielson-app .pill-btn:hover:not(:disabled){background:var(--panel-2)}.nielson-app .pill-btn:active:not(:disabled){transform:scale(.96)}.nielson-app .pill-btn.accent{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}.nielson-app .pill-btn.accent:hover:not(:disabled){background:var(--accent);filter:brightness(1.08)}.nielson-app .pill-btn.small{padding:3px 10px;font-size:12px}.nielson-app .nw-lab{flex-direction:column;min-width:0;height:100%;display:flex}.nielson-app .nw-head{border-bottom:1px solid var(--border-soft);flex-wrap:wrap;align-items:center;gap:10px 14px;padding:14px 18px 10px;display:flex}.nielson-app .sb-collapsed .nw-head{padding-left:60px}.nielson-app .nw-head-ico{display:inline-flex}.nielson-app .nw-title{margin-right:8px;font-size:19px;font-weight:500}.nielson-app .nw-muted{color:var(--muted);font-size:12.5px}.nielson-app .nw-stage{flex:1;min-height:0;position:relative;overflow:hidden}.nielson-app .nw-svg{touch-action:none;display:block}.nielson-app .nw-hint{background:var(--panel);border:1px solid var(--border-soft);color:var(--muted);pointer-events:none;white-space:nowrap;border-radius:999px;padding:6px 14px;font-size:13px;position:absolute;top:18px;left:50%;transform:translate(-50%)}.nielson-app .nw-grid line{stroke:var(--c-grid);stroke-width:1px}.nielson-app .nw-grid .nw-axis{stroke:var(--c-axis);stroke-width:1.4px}.nielson-app .nw-tick{fill:var(--faint);font-family:var(--font-mono);font-size:10.5px}.nielson-app .nw-examples{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.nielson-app .nw-chip{border:1px solid var(--border);color:var(--muted);border-radius:999px;padding:3px 11px;font-size:12.5px;transition:color .13s,border-color .13s,background .13s}.nielson-app .nw-chip:hover{color:var(--text);border-color:var(--faint)}.nielson-app .nw-chip.on{color:var(--text);border-color:var(--accent);background:var(--accent-soft)}.nielson-app .nw-input{border-bottom:1px solid var(--border-soft);gap:6px;max-width:760px;padding:12px 18px 10px;display:grid}.nielson-app .nw-msg{color:var(--faint);font-size:12.5px}.nielson-app .nw-msg.err{color:var(--c-neg)}.nielson-app .nw-curve{fill:none;stroke:var(--c-curve);stroke-width:2.6px;stroke-linejoin:round}.nielson-app .nw-area.pos{fill:color-mix(in srgb, var(--c-pos) 30%, transparent)}.nielson-app .nw-area.neg{fill:color-mix(in srgb, var(--c-neg) 30%, transparent)}.nielson-app .nw-rect{stroke-width:1.2px}.nielson-app .nw-rect.pos{fill:color-mix(in srgb, var(--c-pos) 16%, transparent);stroke:var(--c-pos)}.nielson-app .nw-rect.neg{fill:color-mix(in srgb, var(--c-neg) 16%, transparent);stroke:var(--c-neg)}.nielson-app .nw-rect-label{fill:var(--muted);font-family:var(--font-mono);font-size:12px}.nielson-app .nw-bound{stroke:var(--faint);stroke-width:1px;stroke-dasharray:4 4}.nielson-app .nw-bound-label{fill:var(--muted);font-family:var(--font-mono);font-size:11px}.nielson-app .nw-sweep{stroke:var(--text);stroke-width:1.6px}.nielson-app .nw-sweep-dot{fill:var(--c-curve);stroke:var(--bg);stroke-width:2px}.nielson-app .pos{color:var(--c-pos)}.nielson-app .neg{color:var(--c-neg)}.nielson-app .nw-readout{border-radius:var(--r-md);background:color-mix(in srgb, var(--panel) 92%, transparent);border:1px solid var(--border-soft);pointer-events:none;gap:4px;padding:10px 14px;display:grid;position:absolute;top:26px;left:18px}.nielson-app .nw-ro-main{align-items:baseline;gap:10px;display:flex}.nielson-app .nw-ro-main b{font-family:var(--font-mono);font-size:22px;font-weight:600}.nielson-app .nw-ro-sum{flex-wrap:wrap;gap:12px;font-size:12.5px;display:flex}.nielson-app .nw-ro-sum b{font-family:var(--font-mono)}.nielson-app .nw-bar{border-top:1px solid var(--border-soft);flex-wrap:wrap;align-items:center;gap:10px 14px;padding:10px 18px;display:flex}.nielson-app .nw-range{width:200px;accent-color:var(--accent)}.nielson-app .nw-seg{background:var(--panel-2);border:1px solid var(--border);border-radius:999px;flex-wrap:wrap;gap:2px;padding:2px;display:inline-flex}.nielson-app .nw-seg button{color:var(--muted);border-radius:999px;padding:2px 10px;font-size:12px}.nielson-app .nw-seg button.on{background:var(--panel);color:var(--text);box-shadow:0 1px 3px #00000026}.nielson-app .nw-new{position:relative}.nielson-app .nw-new .new-btn{width:calc(100% - 8px)}.nielson-app .nw-new-menu{position:absolute;top:40px;left:4px;right:4px}.nielson-app .nw-lab-ico{transition:transform .2s var(--ease-pop);display:inline-flex}.nielson-app .board-item:hover .nw-lab-ico{transform:scale(1.15)}.nielson-app .nav-count{color:var(--faint);margin-left:auto;font-size:11.5px}.nielson-app .nw-sort{margin-left:auto}.nielson-app .overlay{background:var(--overlay);z-index:100;animation:nw-fade .18s var(--ease-soft);justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.nielson-app .modal{background:var(--panel);border:1px solid var(--border);border-radius:var(--r-lg);width:min(460px,100vw - 32px);box-shadow:var(--shadow);animation:nw-modal .22s var(--ease-pop);padding:24px}.nielson-app .modal-head{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.nielson-app .modal-head h2{font-size:20px;font-weight:600}.nielson-app .modal-sub{color:var(--muted);margin-bottom:14px;font-size:13.5px}.nielson-app .modal-actions{justify-content:flex-end;gap:10px;margin-top:20px;display:flex}.nielson-app .text-input{background:var(--panel-2);border:1px solid var(--border);border-radius:var(--r-md);outline:none;width:100%;padding:10px 12px;font-size:14px}.nielson-app .text-input:focus{border-color:var(--accent)}.nielson-app .pill-btn.danger{background:var(--danger);border-color:var(--danger);color:#fff}.nielson-app .icon-btn.danger:hover{color:var(--danger);background:var(--danger-soft)}.nielson-app .toasts{z-index:200;flex-direction:column;gap:8px;display:flex;position:fixed;bottom:20px;right:20px}.nielson-app .toast{background:var(--panel);border:1px solid var(--border);border-radius:var(--r-md);box-shadow:var(--shadow);max-width:360px;animation:nw-toast .3s var(--ease-pop);align-items:center;gap:10px;padding:11px 16px;font-size:13.5px;display:flex}.nielson-app .toast .t-ico{color:var(--good);flex-shrink:0;display:inline-flex}.nielson-app .dropdown{display:inline-flex;position:relative}.nielson-app .dd-btn{border:1px solid var(--border);background:var(--panel);border-radius:999px;align-items:center;gap:7px;padding:5px 12px;font-size:12.5px;display:inline-flex}.nielson-app .dd-btn:hover{background:var(--panel-2)}.nielson-app .dd-menu{z-index:30;min-width:280px;position:absolute;top:calc(100% + 6px);left:0}@keyframes nw-fade{0%{opacity:0}}@keyframes nw-modal{0%{opacity:0;transform:translateY(10px)scale(.97)}}@keyframes nw-toast{0%{opacity:0;transform:translateY(12px)scale(.95)}}@keyframes nw-in{0%{opacity:0;transform:translateY(5px)}}.nielson-app .nw-gap{flex:1}.nielson-app .nw-body{flex:1;min-height:0;display:flex}.nielson-app .nw-col{flex-direction:column;flex:1;min-width:0;display:flex}.nielson-app .nw-body>.nw-stage{flex:1;min-width:0}.nielson-app .nw-split{grid-template-rows:minmax(0,1fr);grid-template-columns:minmax(0,1fr) minmax(0,1fr);display:grid}.nielson-app .nw-pane{min-width:0;min-height:0;display:flex;position:relative}.nielson-app .nw-pane+.nw-pane{border-left:1px solid var(--border-soft)}.nielson-app .nw-corner{color:var(--faint);font-size:12px;position:absolute;bottom:10px;left:14px}.nielson-app .nw-link{color:var(--muted);text-underline-offset:2px;font-size:12.5px;text-decoration:underline}.nielson-app .nw-link:hover{color:var(--text)}.nielson-app .nw-big{font-family:var(--font-mono);color:var(--accent);font-size:18px}.nielson-app .nw-fx{flex:340px;align-items:center;gap:8px;min-width:0;max-width:560px;display:flex}.nielson-app .nw-fx .nw-expr.wide{flex:1}.nielson-app .nw-fx .nw-expr:not(.wide) .nw-code{width:130px}.nielson-app .nw-fx{justify-content:flex-end}.nielson-app .nw-side{border-left:1px solid var(--border-soft);background:var(--bg);flex-shrink:0;width:340px;padding:4px 16px 40px;overflow:hidden auto}.nielson-app .nw-sec{border-bottom:1px solid var(--border-soft);flex-direction:column;gap:9px;padding:14px 0 16px;display:flex}.nielson-app .nw-sec-head{letter-spacing:.06em;text-transform:uppercase;color:var(--muted);justify-content:space-between;align-items:center;gap:8px;font-size:11px;font-weight:600;display:flex}.nielson-app .nw-note{color:var(--faint);font-size:12.5px;line-height:1.5}.nielson-app .nw-note code{color:var(--muted);font-size:11.5px}.nielson-app .nw-row{justify-content:space-between;gap:10px;font-size:13px;display:flex}.nielson-app .nw-row-k{color:var(--muted);align-items:center;gap:7px;display:inline-flex}.nielson-app .nw-row-v{font-family:var(--font-mono);white-space:nowrap;font-size:12.5px}.nielson-app .nw-dot{border-radius:50%;flex-shrink:0;width:9px;height:9px;display:inline-block}.nielson-app .nw-callout{border-radius:var(--r-md);background:var(--accent-soft);animation:nw-in .25s var(--ease-soft);padding:8px 11px;font-size:13px}.nielson-app .nw-callout.good{background:color-mix(in srgb, var(--good) 15%, transparent)}.nielson-app .nw-tex-row{padding:2px 0;font-size:14px;overflow-x:auto}.nielson-app .nw-tex mjx-container[display=true]{margin:4px 0!important}.nielson-app .nw-seg.small button{padding:2px 9px;font-size:11.5px}.nielson-app .nw-check{color:var(--muted);cursor:pointer;align-items:center;gap:6px;font-size:12.5px;display:inline-flex}.nielson-app .nw-check input{accent-color:var(--accent)}.nielson-app .nw-expr{flex-wrap:wrap;align-items:center;gap:6px;min-width:0;display:inline-flex;position:relative}.nielson-app .nw-expr.wide{display:flex}.nielson-app .nw-expr.wide .nw-code{flex:1}.nielson-app .nw-expr:not(.wide) .nw-code{width:72px}.nielson-app .nw-expr-k{color:var(--muted);white-space:nowrap;font-size:12.5px}.nielson-app .nw-code{background:var(--panel-2);border:1px solid var(--border);border-radius:var(--r-sm);min-width:0;font-family:var(--font-mono);color:var(--text);outline:none;padding:5px 8px;font-size:12.5px;transition:border-color .15s}.nielson-app .nw-code:focus{border-color:var(--accent)}.nielson-app .nw-code::placeholder{color:var(--faint);opacity:.7}.nielson-app .nw-expr.bad .nw-code{border-color:var(--danger)}.nielson-app .nw-expr-err{color:var(--danger);flex-basis:100%;font-size:11.5px}.nielson-app .nw-expr:not(.wide) .nw-expr-err{z-index:2;background:var(--panel);box-shadow:var(--shadow);white-space:nowrap;border-radius:6px;padding:2px 6px;display:none;position:absolute;top:100%;left:0}.nielson-app .nw-expr:not(.wide):focus-within .nw-expr-err{display:block}.nielson-app .nw-pt{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.nielson-app .nw-numbox{align-items:center;gap:5px;display:inline-flex}.nielson-app .nw-numbox .nw-code{width:64px}.nielson-app .nw-slider-row{align-items:center;gap:6px;display:flex}.nielson-app .nw-slider-row .nw-expr .nw-code{width:44px}.nielson-app .nw-add{position:relative}.nielson-app .nw-add .pill-btn{text-transform:none;letter-spacing:0;font-weight:500}.nielson-app .nw-add-menu{z-index:30;text-transform:none;letter-spacing:0;min-width:190px;font-weight:400;position:absolute;top:calc(100% + 6px);right:0}.nielson-app .nw-card{border:1px solid var(--border-soft);border-radius:var(--r-md);background:var(--panel);animation:nw-in .2s var(--ease-soft)}.nielson-app .nw-card.open{border-color:var(--border)}.nielson-app .nw-card.bad{border-color:color-mix(in srgb, var(--danger) 55%, transparent)}.nielson-app .nw-card-head{align-items:center;gap:6px;padding:4px 6px 4px 4px;display:flex}.nielson-app .nw-card-title{border-radius:var(--r-sm);text-align:left;flex:1;align-items:center;gap:8px;min-width:0;padding:6px 8px;font-size:13px;display:flex}.nielson-app .nw-card-title:hover{background:var(--hover)}.nielson-app .nw-ell{text-overflow:ellipsis;white-space:nowrap;font-family:var(--font-mono);font-size:11.5px;overflow:hidden}.nielson-app .nw-badge{background:var(--danger-soft);color:var(--danger);border-radius:999px;padding:1px 7px;font-size:10px}.nielson-app .nw-part{color:var(--muted);background:var(--panel-2);border-radius:999px;flex-shrink:0;align-items:center;gap:2px;padding:1px;font-size:11.5px;display:inline-flex}.nielson-app .nw-part button{width:20px;height:20px;color:var(--muted);border-radius:50%}.nielson-app .nw-part button:hover{background:var(--hover-strong);color:var(--text)}.nielson-app .nw-part span{text-align:center;min-width:44px}.nielson-app .nw-card-body{border-top:1px solid var(--border-soft);flex-direction:column;gap:8px;padding:10px 12px;display:flex}.nielson-app .nw-card-foot{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.nielson-app .nw-colors{gap:5px;display:flex}.nielson-app .nw-swatch{background:var(--sw);width:16px;height:16px;box-shadow:0 0 0 2px var(--panel);transition:transform .15s var(--ease-pop);border-radius:50%}.nielson-app .nw-swatch.on{box-shadow:0 0 0 2px var(--panel), 0 0 0 3.5px var(--sw)}.nielson-app .nw-swatch:hover{transform:scale(1.15)}.nielson-app .nw-sliders{border-radius:var(--r-md);background:color-mix(in srgb, var(--panel) 92%, transparent);border:1px solid var(--border-soft);flex-direction:column;gap:6px;padding:8px 12px;display:flex;position:absolute;top:12px;left:14px}.nielson-app .nw-slider{align-items:center;gap:9px;font-size:13px;display:flex}.nielson-app .nw-slider input{width:160px;accent-color:var(--accent)}.nielson-app .nw-slider.wide input{flex:1;width:auto}.nielson-app .nw-slider b{font-family:var(--font-mono);font-weight:500}.nielson-app .nw-slider span{font-family:var(--font-mono);min-width:4ch;color:var(--muted);font-size:12px}.nielson-app .nw-present{background:var(--panel);border:1px solid var(--border);box-shadow:var(--shadow);white-space:nowrap;animation:nw-in .25s var(--ease-soft);border-radius:999px;align-items:center;gap:12px;padding:8px 14px;display:flex;position:absolute;bottom:16px;left:50%;transform:translate(-50%)}.nielson-app 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.pill-btn.small{padding:4px 11px;font-size:12px}.pinnacle-app .link-btn{color:var(--muted);border-radius:6px;padding:2px 4px;font-size:12px}.pinnacle-app .link-btn:hover{color:var(--text);text-decoration:underline}.pinnacle-app .overlay{background:var(--overlay);z-index:100;animation:cs-fade .18s var(--ease-soft);justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.pinnacle-app .modal{background:var(--panel);border:1px solid var(--border);border-radius:var(--r-lg);width:min(540px,100vw - 32px);box-shadow:var(--shadow);animation:cs-modal .22s var(--ease-pop);max-height:90vh;padding:24px;overflow-y:auto}.pinnacle-app .modal.wide{width:min(780px,100vw - 32px)}.pinnacle-app .modal-head{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.pinnacle-app .modal-head h2{font-size:21px;font-weight:600}.pinnacle-app .modal-sub{color:var(--muted);margin-bottom:14px;font-size:13.5px}.pinnacle-app .modal-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:10px;margin-top:22px;display:flex}.pinnacle-app .field-label{color:var(--muted);margin:16px 0 7px;font-size:13px;display:block}.pinnacle-app .toasts{z-index:200;flex-direction:column;gap:8px;display:flex;position:fixed;bottom:20px;right:20px}.pinnacle-app .toast{background:var(--panel);border:1px solid var(--border);border-radius:var(--r-md);box-shadow:var(--shadow);max-width:340px;animation:cs-toast .3s var(--ease-pop);align-items:center;gap:10px;padding:11px 16px;font-size:13.5px;display:flex}.pinnacle-app .toast .t-ico{color:var(--good);flex-shrink:0;display:inline-flex}.pinnacle-app ::-webkit-scrollbar{width:8px;height:8px}.pinnacle-app ::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}.pinnacle-app ::-webkit-scrollbar-thumb:hover{background:var(--faint)}.pinnacle-app ::-webkit-scrollbar-track{background:0 0}@keyframes cs-fade{0%{opacity:0}}:root[data-theme=dark] .pinnacle-app{--s-math:#7b93ff;--s-phys:#a8d84e;--s-chem:#f06bb0;--s-bio:#3fb68b;--s-cs:#b48cff;--accent-ink:#0d1433;--theme-ink:#0d1433;--hue:var(--accent)}:root[data-theme=light] .pinnacle-app{--s-math:#3d5bd9;--s-phys:#5f8f1a;--s-chem:#c23d82;--s-bio:#1f8a63;--s-cs:#7c4fd6;--accent-ink:#fff;--theme-ink:#fff;--hue:var(--accent)}.pinnacle-app .pill-btn.accent{color:var(--accent-ink)}.pinnacle-app .pill-btn.big{padding:9px 20px;font-size:14px;font-weight:600}.pinnacle-app .cs-faint{color:var(--muted);font-size:12.5px}.pinnacle-app .cs-eyebrow{letter-spacing:.09em;text-transform:uppercase;color:var(--muted);font-size:11px;font-weight:600}.pinnacle-app .cs-badge{background:var(--accent-soft);color:var(--accent);border-radius:999px;align-items:center;gap:5px;padding:3px 10px;font-size:11.5px;font-weight:600;display:inline-flex}.pinnacle-app .cs-badge.good{background:color-mix(in srgb, var(--good) 16%, transparent);color:var(--good)}.pinnacle-app .cs-sb-glyph{display:inline-flex}.pinnacle-app .app.playing{grid-template-columns:1fr}.pinnacle-app .app.playing .sidebar,.pinnacle-app .app.playing .sb-mobile-fab,.pinnacle-app .app.playing .sb-reveal{display:none}.pinnacle-app .cs-page{max-width:1060px;animation:cs-modal .3s var(--ease-soft);margin:0 auto;padding:34px 34px 90px}.pinnacle-app .cs-hero{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:18px;display:flex}.pinnacle-app .cs-hero h1{letter-spacing:-.01em;margin:6px 0 8px;font-size:34px;font-weight:600}.pinnacle-app .cs-hero p{color:var(--muted);max-width:520px;font-size:14.5px}.pinnacle-app .cs-resume{text-align:left;border-radius:var(--r-lg);border:1px solid var(--border);background:var(--panel);min-width:300px;transition:transform .15s var(--ease-soft), border-color .15s;align-items:center;gap:14px;padding:14px 18px 14px 14px;display:flex}.pinnacle-app .cs-resume:hover{border-color:var(--hue);transform:translateY(-2px)}.pinnacle-app .cs-resume-art{width:48px;height:48px;color:var(--hue);background:color-mix(in srgb, var(--hue) 14%, transparent);border-radius:12px;place-items:center;display:grid}.pinnacle-app .cs-resume-text{flex:1;gap:1px;display:grid}.pinnacle-app .cs-resume-text b{font-size:15px}.pinnacle-app .cs-shelf{margin-top:34px}.pinnacle-app .cs-shelf-head{align-items:center;gap:16px;margin-bottom:14px;display:flex}.pinnacle-app .cs-shelf-glyph{width:56px;height:56px;color:var(--hue);background:color-mix(in srgb, var(--hue) 13%, transparent);border-radius:16px;place-items:center;display:grid}.pinnacle-app .cs-shelf-head h2{font-size:21px;font-weight:600}.pinnacle-app .cs-track{border-radius:var(--r-xl);background:var(--bg-deep);border:1px solid var(--border-soft);gap:30px;padding:22px 22px 18px;display:flex;position:relative;overflow-x:auto}.pinnacle-app .cs-tile{flex:none;justify-items:center;gap:10px;width:158px;display:grid;position:relative}.pinnacle-app .cs-tile+.cs-tile:before{content:"";background:var(--border);width:30px;height:2px;position:absolute;top:79px;right:100%}.pinnacle-app .cs-tile-card{border:2px solid var(--border);background:var(--panel);width:158px;height:158px;transition:transform .16s var(--ease-pop), border-color .16s;border-bottom-width:5px;border-radius:16px;grid-template-rows:auto 1fr auto;padding:10px 12px 12px;display:grid;position:relative}.pinnacle-app .cs-tile:hover .cs-tile-card{border-color:var(--hue);transform:translateY(-3px)}.pinnacle-app .cs-tile:active .cs-tile-card{transform:translateY(1px)}.pinnacle-app .cs-tile.complete .cs-tile-card{border-color:color-mix(in srgb, var(--hue) 60%, var(--border))}.pinnacle-app .cs-tile-top{justify-content:space-between;align-items:center;gap:6px;min-width:0;min-height:18px;display:flex}.pinnacle-app .cs-level{letter-spacing:.06em;text-transform:uppercase;min-width:0;color:var(--muted);white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:10.5px;font-weight:700;overflow:hidden}.pinnacle-app .cs-done-dot{background:var(--hue);width:18px;height:18px;color:var(--bg);border-radius:50%;flex-shrink:0;place-items:center;display:grid}.pinnacle-app .cs-tile-art{color:var(--hue);transition:transform .3s var(--ease-pop);place-items:center;display:grid}.pinnacle-app .cs-tile:hover .cs-tile-art{transform:scale(1.1)rotate(-4deg)}.pinnacle-app .cs-bar{background:var(--hover-strong);border-radius:99px;height:5px;overflow:hidden}.pinnacle-app .cs-bar span{background:var(--hue);border-radius:inherit;height:100%;transition:width .5s var(--ease-soft);display:block}.pinnacle-app .cs-tile-name{text-align:center;font-size:14.5px;line-height:1.25}.pinnacle-app .cs-tile-new .cs-tile-card{color:var(--muted);background:0 0;border-style:dashed;border-bottom-width:2px;grid-template-rows:1fr;place-items:center}.pinnacle-app .cs-tile-new:hover .cs-tile-card{color:var(--accent);border-color:var(--accent)}.pinnacle-app .cs-tile-new+.cs-tile:before,.pinnacle-app .cs-tile+.cs-tile-new:before{display:none}.pinnacle-app .cs-course-head{align-items:flex-start;gap:22px;margin-bottom:30px;display:flex}.pinnacle-app .cs-course-art{width:92px;height:92px;color:var(--hue);background:color-mix(in srgb, var(--hue) 14%, transparent);border:2px solid color-mix(in srgb, var(--hue) 35%, transparent);border-radius:22px;flex:none;place-items:center;display:grid}.pinnacle-app .cs-course-meta h1{margin:4px 0 6px;font-size:30px;font-weight:600}.pinnacle-app .cs-course-meta p{color:var(--muted);max-width:600px;font-size:14.5px}.pinnacle-app .cs-course-by{align-items:center;gap:12px;margin-top:10px;display:flex}.pinnacle-app .cs-course-actions{flex-wrap:wrap;align-items:center;gap:8px;margin-top:18px;display:flex}.pinnacle-app .cs-unit{margin-top:26px}.pinnacle-app .cs-unit h2{letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:10px;font-size:12px;font-weight:600}.pinnacle-app .cs-path{gap:6px;list-style:none;display:grid;position:relative}.pinnacle-app .cs-path li{position:relative}.pinnacle-app .cs-path li+li:before{content:"";background:var(--border);width:2px;height:18px;position:absolute;top:-12px;left:30px}.pinnacle-app .cs-node{text-align:left;border-radius:var(--r-lg);border:1px solid #0000;align-items:center;gap:14px;width:100%;padding:10px 16px 10px 12px;transition:background .14s,border-color .14s;display:flex}.pinnacle-app .cs-node:hover{background:var(--panel);border-color:var(--border)}.pinnacle-app .cs-node.current{background:var(--panel);border-color:var(--hue)}.pinnacle-app .cs-node-dot{border:2px solid var(--border);background:var(--bg);width:38px;height:38px;font:600 13px var(--font-mono);color:var(--muted);transition:transform .2s var(--ease-pop);border-radius:50%;flex:none;place-items:center;display:grid}.pinnacle-app .cs-node:hover .cs-node-dot{transform:scale(1.08)}.pinnacle-app .cs-node.current .cs-node-dot{border-color:var(--hue);color:var(--hue)}.pinnacle-app .cs-node.done .cs-node-dot{background:var(--hue);border-color:var(--hue);color:var(--bg)}.pinnacle-app .cs-node-text{flex:1;gap:1px;min-width:0;display:grid}.pinnacle-app .cs-node-text b{font-size:15px;font-weight:500}.pinnacle-app .cs-node-steps{white-space:nowrap}.pinnacle-app .cs-player{grid-template-rows:auto 1fr auto;height:100vh;display:grid}.pinnacle-app .cs-player-top{border-bottom:1px solid var(--border-soft);align-items:center;gap:16px;padding:14px 22px;display:flex}.pinnacle-app .cs-steps{flex:1;gap:10px;max-width:760px;margin:0 auto;display:flex}.pinnacle-app .cs-seg-page{gap:3px;min-width:0;display:flex}.pinnacle-app .cs-seg{background:var(--hover-strong);height:7px;transition:background .3s var(--ease-soft);border-radius:99px;flex:1}.pinnacle-app .cs-seg.past{background:var(--hue)}.pinnacle-app .cs-seg.now{background:color-mix(in srgb, var(--hue) 55%, var(--hover-strong))}.pinnacle-app .cs-seg:not(:disabled):hover{filter:brightness(1.2)}.pinnacle-app .cs-player-body{padding:36px 22px 40px;scroll-padding-top:24px;overflow:hidden auto}:root[data-theme=light] .pinnacle-app .cs-player.scroll{--bg:#fff;background:#fff}.pinnacle-app .cs-player.scroll{grid-template-rows:auto 1fr}.pinnacle-app .cs-player.scroll .cs-player-top{background:color-mix(in srgb, var(--bg) 92%, transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.pinnacle-app .cs-player.scroll .cs-player-body{padding:0 22px}.pinnacle-app .cs-flow{gap:0;max-width:680px;margin:0 auto;display:grid}.pinnacle-app .cs-flow-head{padding:56px 0 8px}.pinnacle-app .cs-flow-head h1{letter-spacing:-.01em;margin:6px 0;font-size:36px;font-weight:600}.pinnacle-app .cs-flow-head p{font-size:15px}.pinnacle-app .cs-sec{animation:cs-rise .5s var(--ease-soft);gap:22px;padding:44px 0 8px;display:grid}.pinnacle-app .cs-player.cards .cs-sec{padding-top:0}.pinnacle-app .cs-blk{min-width:0}.pinnacle-app .cs-blk.wide{--w:min(1040px, calc(100vw - 44px));width:var(--w);margin-left:calc((100% - var(--w)) / 2)}.pinnacle-app .cs-go{animation:cs-rise .5s var(--ease-soft);flex-direction:column;align-items:center;gap:10px;padding:44px 0 0;display:flex}.pinnacle-app .cs-go .pill-btn.big{justify-content:center;min-width:180px;padding:11px 26px;font-size:15px}.pinnacle-app .cs-flow-tail{height:55vh}.pinnacle-app .cs-player.cards .cs-card{animation:cs-step .32s var(--ease-soft)}.pinnacle-app .cs-mode{border:1px solid var(--border);background:var(--panel);border-radius:999px;padding:3px;display:inline-flex}.pinnacle-app .cs-mode button{color:var(--muted);border-radius:999px;padding:4px 12px;font-size:12px;transition:background .15s,color .15s}.pinnacle-app .cs-mode button.on{background:var(--hover-strong);color:var(--text)}.pinnacle-app .cs-goal{border:1px solid color-mix(in srgb, var(--hue) 45%, var(--border));background:color-mix(in srgb, var(--hue) 8%, var(--bg));border-radius:999px;justify-self:center;align-items:center;gap:9px;margin:0 auto 4px;padding:6px 14px 6px 8px;font-size:13.5px;font-weight:500;display:inline-flex}.pinnacle-app .cs-goal-dot{border:2px solid var(--hue);width:20px;height:20px;color:var(--bg);border-radius:50%;place-items:center;transition:background .25s;display:grid}.pinnacle-app .cs-goal.done{border-color:var(--good);background:color-mix(in srgb, var(--good) 12%, var(--bg))}.pinnacle-app .cs-goal.done .cs-goal-dot{background:var(--good);border-color:var(--good);animation:cs-pop .5s var(--ease-pop)}.pinnacle-app .cs-tool>.cs-goal{width:fit-content;display:flex}.pinnacle-app .mancino-app.cs-mc-embed,.pinnacle-app .householder-app.cs-hh-embed{z-index:0;border-radius:var(--r-lg);border:1px solid var(--border);background:var(--bg);position:relative;inset:auto;overflow:auto}.pinnacle-app .mancino-app.cs-mc-embed{-webkit-user-select:text;user-select:text;padding:16px 20px}.pinnacle-app .cs-diagram{place-items:center;min-height:260px;padding:18px;display:grid}.pinnacle-app .cs-diagram:not(.draw){width:100%;max-width:520px;margin:0 auto}.pinnacle-app .cs-diagram.draw{padding:0;display:block}.pinnacle-app .householder-app.cs-hh-embed{max-height:640px;padding:4px 0}.pinnacle-app .householder-app.cs-pt{flex-direction:column;height:560px;display:flex}.pinnacle-app .householder-app.cs-atom{padding:14px}.pinnacle-app .cs-bench-table [aria-label="Close periodic table"]{display:none}.pinnacle-app .cs-browse{gap:12px;margin-top:10px;display:grid}.pinnacle-app .cs-pack{border-radius:var(--r-xl);border:1px solid var(--border);background:var(--panel);transition:border-color .15s, transform .15s var(--ease-soft);align-items:center;gap:18px;padding:18px 20px;display:flex}.pinnacle-app .cs-pack:hover{border-color:var(--hue);transform:translateY(-1px)}.pinnacle-app .cs-pack-art{width:60px;height:60px;color:var(--hue);background:color-mix(in srgb, var(--hue) 13%, transparent);border-radius:16px;flex:none;place-items:center;display:grid}.pinnacle-app .cs-pack-text{flex:1;gap:3px;min-width:0;display:grid}.pinnacle-app .cs-pack-text b{font-size:17px;font-weight:600}.pinnacle-app .cs-start{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px;margin-top:26px;display:grid}.pinnacle-app .cs-start-card{text-align:left;border-radius:var(--r-xl);border:1px solid var(--border);background:var(--panel);transition:border-color .15s, transform .15s var(--ease-soft);gap:8px;padding:24px;display:grid}.pinnacle-app .cs-start-card:hover{border-color:var(--accent);transform:translateY(-2px)}.pinnacle-app .cs-start-card b{font-size:17px}.pinnacle-app .cs-start-art{width:52px;height:52px;color:var(--accent);background:var(--accent-soft);border-radius:14px;place-items:center;margin-bottom:4px;display:grid}@keyframes cs-rise{0%{opacity:0;transform:translateY(18px)}}.pinnacle-app .cs-player-foot{border-top:1px solid var(--border-soft);align-items:center;gap:12px;padding:14px 120px 14px 22px;display:flex}.pinnacle-app .cs-foot-hint{text-align:right;flex:1}.pinnacle-app .cs-finish{text-align:center;justify-items:center;gap:8px;max-width:520px;margin:8vh auto 0;padding-top:20px;display:grid}.pinnacle-app .cs-finish-mark{background:var(--hue);width:84px;height:84px;color:var(--bg);animation:cs-pop .6s var(--ease-pop);border-radius:50%;place-items:center;margin-bottom:8px;display:grid}.pinnacle-app .cs-finish h1{font-size:28px;font-weight:600}.pinnacle-app .cs-finish-actions{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:18px;display:flex}.pinnacle-app .cs-md{-webkit-user-select:text;user-select:text;font-size:16.5px;line-height:1.6}.pinnacle-app .cs-md p+p,.pinnacle-app .cs-md p+ul,.pinnacle-app .cs-md ul+p,.pinnacle-app .cs-md p+ol{margin-top:10px}.pinnacle-app .cs-md ul,.pinnacle-app .cs-md ol{padding-left:22px}.pinnacle-app .cs-md ul{list-style:outside}.pinnacle-app .cs-md li+li{margin-top:4px}.pinnacle-app .cs-md strong{font-weight:650}.pinnacle-app .cs-md code{font:.9em var(--font-mono);background:var(--hover-strong);border-radius:5px;padding:1px 5px}.pinnacle-app .cs-md a{color:var(--accent)}.pinnacle-app .cs-text.tone-key,.pinnacle-app .cs-text.tone-tip,.pinnacle-app .cs-text.tone-warn{border-radius:var(--r-md);border-left:3px solid var(--hue);background:color-mix(in srgb, var(--hue) 9%, transparent);padding:14px 16px}.pinnacle-app .cs-text.tone-tip{border-left-color:var(--good);background:color-mix(in srgb, var(--good) 9%, transparent)}.pinnacle-app .cs-text.tone-warn{border-left-color:var(--warn);background:color-mix(in 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