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env(safe-area-inset-bottom))}.nt-rv-phone-scroll .nt-rv-switcher{padding:0 14px 10px}.nt-rv-phone-scroll .nt-rv-chapters{overflow:visible;padding:0 10px 14px}.nt-rv-chapters .nt-eyebrow,.nt-rv-reader .nt-eyebrow,.nt-rv-reader-desk .nt-eyebrow{font-size:12px;color:var(--nt-dim)}.nt-rv-bar{position:relative;z-index:2}.nt-rv-bar-title{font-size:14px;font-weight:700;line-height:1.3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nt-rv-docseg{width:auto;flex-shrink:0}.nt-rv-docseg button{flex:0 0 auto;min-width:84px;min-height:34px;padding:0 12px;white-space:nowrap}.nt-rv-docseg button:not([aria-pressed=true]){color:var(--nt-rv-meta)}.nt-rv-outline{position:absolute;z-index:30;right:0;top:calc(100% + 6px);width:300px;max-height:min(420px,60vh);overflow-y:auto;padding:5px;border-radius:14px;border:1px solid var(--nt-line);background:var(--surface-solid);box-shadow:var(--shadow-2);display:flex;flex-direction:column;gap:2px}.nt-rv-outline 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35%,transparent);text-underline-offset:4px}.nt-rv-map-topic:hover{text-decoration-color:var(--nt-tint)}.nt-rv-map-num,.nt-rv-topic-num{font-family:var(--font-mono),ui-monospace,monospace;font-size:max(12px,.72em);font-weight:600;color:var(--nt-dim);flex:0 0 auto;white-space:nowrap}.nt-rv-ideas{list-style:none;margin:2px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:2px 0;font-size:.86em;color:var(--nt-dim)}.nt-rv-ideas li:not(:last-child):after{content:"·";margin:0 8px;color:var(--nt-faint)}.nt-rv-fgroup,.nt-rv-topic{scroll-margin-top:16px}.nt-rv-topic+.nt-rv-topic{margin-top:44px;padding-top:30px;border-top:1px solid var(--nt-line)}.nt-rv-fgroup h2,.nt-rv-topic h2{display:flex;align-items:baseline;gap:10px;margin:0 0 18px;font-family:var(--font-headline),system-ui,sans-serif;font-size:1.22em;font-weight:800;letter-spacing:-.015em;line-height:1.3}.nt-rv-block+.nt-rv-block{margin-top:24px}.nt-rv-block-label{display:flex;align-items:center;gap:6px;margin:0 0 10px;font-family:var(--font-mono),ui-monospace,monospace;font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--nt-dim)}.nt-rv-terms{margin:0;display:flex;flex-direction:column;gap:10px}.nt-rv-term dt{display:inline;font-weight:700}.nt-rv-term dt:after{content:" — ";font-weight:400;color:var(--nt-faint)}.nt-rv-term dd{display:inline;margin:0}.nt-rv-points{list-style:none;counter-reset:nt-rv-point;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}.nt-rv-points li{counter-increment:nt-rv-point;position:relative;padding-left:2.1em}.nt-rv-points li:before{content:counter(nt-rv-point);position:absolute;left:0;top:.12em;min-width:1.5em;font-family:var(--font-mono),ui-monospace,monospace;font-size:max(12px,.78em);font-weight:600;color:var(--nt-tint)}.nt-rv-laws{display:flex;flex-direction:column;gap:14px}.nt-rv-law{padding-left:14px;border-left:2px solid color-mix(in srgb,var(--nt-tint) 45%,transparent)}.nt-rv-doc .nt-rv-law-name{font-weight:700;margin-bottom:2px}.nt-rv-eqs{display:flex;flex-direction:column;gap:10px}.nt-rv-eq-label{font-size:.86em;color:var(--nt-dim)}.nt-rv-math--display{max-width:100%;overflow-x:auto;overflow-y:hidden}.nt-rv-math--display .katex-display{margin:.35em 0;text-align:left;overflow:visible}.nt-rv-math--display .katex-display>.katex{text-align:left}.nt-rv-doc .katex{white-space:normal}.nt-rv-doc .katex.nt-rv-math-wide{display:block;max-width:100%;overflow-x:auto;overflow-y:hidden;white-space:nowrap;padding:2px 0}.nt-rv-math-scroll{scrollbar-width:thin;scrollbar-color:var(--nt-faint) transparent}.nt-rv-math-scroll:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}.nt-rv-math-scroll[data-more-end]{-webkit-mask-image:linear-gradient(to right,var(--text) calc(100% - 32px),transparent);mask-image:linear-gradient(to right,var(--text) calc(100% - 32px),transparent)}.nt-rv-math-scroll[data-more-start]{-webkit-mask-image:linear-gradient(to 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li:before{font-family:var(--font-mono),ui-monospace,monospace;color:var(--nt-dim)}.nt-rv-steps li:after{content:attr(data-marks);font-size:12px;white-space:nowrap}.nt-rv-steps[hidden]{display:none}.nt-rv-reveal{display:inline-flex;align-items:center;gap:6px;min-height:36px;padding:0 14px;border:1px solid color-mix(in srgb,var(--nt-tint) 35%,transparent);border-radius:9999px;background:color-mix(in srgb,var(--nt-tint) 8%,transparent);color:var(--text);font-family:inherit;font-size:13px;font-weight:600;cursor:pointer;transition:background .14s ease,border-color .14s ease}.nt-rv-reveal .material-symbols-outlined{color:var(--nt-tint)}.nt-rv-reveal:hover{background:color-mix(in srgb,var(--nt-tint) 14%,transparent)}.nt-rv-reveal:focus-visible{outline:2px solid var(--nt-tint);outline-offset:2px}.nt-rv-reveal[aria-expanded=true]{margin-top:12px;border-color:var(--nt-line);background:transparent;color:var(--nt-dim)}.nt-rv-reveal[aria-expanded=true] 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var(--border);background:var(--surface-solid);color:var(--text);box-shadow:var(--shadow-2);animation:nt-rise .16s cubic-bezier(.22,1,.36,1)}.nt-rv-selbar--dock{left:50%;bottom:calc(14px + env(safe-area-inset-bottom));max-width:calc(100vw - 24px)}.nt-rv-selbtn{display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:0 14px;border:none;border-radius:9999px;background:transparent;color:var(--text);font-family:inherit;font-size:13.5px;font-weight:600;white-space:nowrap;cursor:pointer}.nt-rv-selbtn:hover:not(:disabled){background:var(--nt-soft-hi,color-mix(in srgb,var(--text) 9%,transparent))}.nt-rv-selbtn:disabled{opacity:.6;cursor:default}.nt-rv-selbtn:focus-visible{outline:2px solid 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