:root{font-family:Arial,Helvetica,sans-serif;color:#2d3031;background:#f8faf6;--ink:#2d3031;--green:#4d874e;--line:#cdd6ce;--paper-w:595px;--paper-h:842px;color-scheme:light}*{box-sizing:border-box}body{margin:0;height:100dvh;display:grid;grid-template-rows:68px minmax(0,1fr) 44px;background:#f8faf6 url(/reader-assets/ebook-20261102-0c7b8209ee36/paper-grid.png) repeat;background-size:768px 768px}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a,input{touch-action:manipulation}button{cursor:pointer;color:inherit}button:disabled{cursor:default;opacity:.38}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible,#pageImage:focus-visible{outline:3px solid #6b986d;outline-offset:4px}button img,a img{flex-shrink:0}img{max-width:100%}button{border-radius:0}button:not(:disabled):hover{background-color:#edf1eb}button:disabled:hover{background:inherit}[hidden]{display:none!important}.sr-only,.skip-link{position:absolute;width:1px;height:1px;margin:-1px;clip:rect(0,0,0,0);overflow:hidden;white-space:nowrap}.skip-link:focus{clip:auto;width:auto;height:auto;padding:12px;z-index:200;background:white}
.masthead{display:flex;align-items:center;gap:34px;padding:0 32px;background:#fff;border-bottom:3px solid var(--ink);z-index:20;min-width:0}.brand{display:flex;align-items:center;gap:15px;flex-shrink:0}.brand img{width:62px;height:44px;object-fit:contain}.brand strong{font-size:20px;font-weight:750;white-space:nowrap;letter-spacing:-.55px}.library-nav{display:flex;align-self:stretch;align-items:center;gap:30px;white-space:nowrap;font-size:14px;flex:1}.library-nav a{height:100%;display:flex;align-items:center;position:relative}.library-nav a.active{font-weight:700}.library-nav a.active:after{content:'';position:absolute;bottom:0;left:0;right:0;border-bottom:4px solid #db3c43}.bot-link{gap:8px;font-weight:700}.header-actions{display:flex;gap:20px;align-items:center}.header-actions form{width:248px;height:40px;display:flex;align-items:center;padding:0 14px;gap:10px;border:1px solid #c7ccca}.header-actions input{border:0;outline:0;width:100%;font-size:13px;min-width:0;background:none}.download{display:flex;align-items:center;justify-content:center;gap:10px;height:40px;padding:0 17px;border:1.5px solid var(--ink);font-size:13px;font-weight:600;white-space:nowrap}.download:hover{background:#edf1eb}
.icon-rail{position:fixed;left:30px;top:138px;z-index:30;display:grid;gap:12px}.icon-button{width:42px;height:42px;border:1.5px solid var(--ink);background:#fff;display:grid;place-items:center;padding:10px;position:relative}.icon-button img{width:22px;height:22px}.saved-dot{position:absolute;right:5px;top:5px;width:6px;height:6px;background:#4d874e;border-radius:50%}
.reader{display:grid;grid-template-rows:20px 54px minmax(0,1fr) 54px;gap:18px;min-height:0;padding:16px 0 20px}.breadcrumb{display:flex;align-items:center;gap:12px;min-width:0;width:calc(100% - 232px);margin:0 auto;font:11px/20px Menlo,Consolas,monospace;letter-spacing:1px;white-space:nowrap;overflow:hidden}.breadcrumb span:last-child{overflow:hidden;text-overflow:ellipsis}.page-navigation{display:flex;justify-content:space-between;gap:42px;width:min(854px,calc(100% - 180px));margin:0 auto}.page-nav{border:2px solid var(--ink);display:flex;align-items:center;gap:16px;min-width:0;flex:0 1 340px;padding:0 16px;background:#fff;text-align:left;overflow:hidden}.direction{display:flex;align-items:center;gap:6px;font-size:16px;font-weight:800;white-space:nowrap;flex-shrink:0}.direction img{width:12px;height:12px}.destination{font:11px/1.45 Menlo,Consolas,monospace;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;letter-spacing:-.12px}.page-nav.next{background:var(--ink);color:white}.next .direction img{filter:invert(1)}.page-nav.next:not(:disabled):hover{background:#44494a}.paper-stage{min-height:0;overflow:auto;display:flex;justify-content:safe center;align-items:safe center;padding:0 34px;scrollbar-width:thin;overscroll-behavior:contain}.paper-frame{position:relative;flex-shrink:0;width:var(--paper-w);height:var(--paper-h);border:2px solid var(--ink);background:#fff;box-shadow:0 1px 4px #26342814;isolation:isolate}.page-surface>img{display:block;width:100%;height:100%;max-width:none;object-fit:contain;background:#fff;transition:opacity .12s}.paper-frame.loading .page-surface>img{opacity:.35}.chapter-tab{position:absolute;top:8%;left:100%;margin-left:2px;writing-mode:vertical-rl;transform:rotate(180deg);background:var(--green);color:white;font-size:11px;line-height:27px;font-weight:700;letter-spacing:.5px;padding:15px 0;max-height:58%;overflow:hidden;white-space:nowrap}.page-error{position:absolute;inset:0;display:grid;place-content:center;text-align:center;background:#fff}.page-error button{background:white;border:1px solid;padding:10px}.readable-text{width:100%;height:100%;overflow:auto;padding:28px;font:16px/1.65 Arial,sans-serif;color:#202523}.readable-text h4{font-size:19px;line-height:1.35;margin:20px 0 12px}.readable-text h5{font-size:17px}.readable-text p{margin:12px 0}.readable-text table{border-collapse:collapse;font-size:14px;line-height:1.5;min-width:100%}.readable-text td,.readable-text th{border:1px solid #bdc6bf;padding:8px;text-align:left;vertical-align:top}.readable-text th{background:#f0f3ee}.reading-table-wrap{overflow:auto}.readable-text .manual-note{border-left:3px solid var(--green);background:#f4f7f1;padding:8px 12px}.readable-text li{margin:5px 0}.reader-footer{margin:0 32px;display:flex;align-items:center;justify-content:space-between;gap:16px;border-top:1px solid var(--ink);font:11px/1.4 Menlo,Consolas,monospace;letter-spacing:.6px}.page-jump{display:flex;align-items:center;gap:6px;white-space:nowrap}.page-jump input{width:42px;padding:4px 2px;border:0;border-bottom:1px solid transparent;background:none;text-align:center;font:inherit;appearance:textfield}.page-jump input::-webkit-inner-spin-button{appearance:none}.page-jump input:hover,.page-jump input:focus{border-color:#7d8c80}.footer-tools{display:flex;align-items:center;gap:18px}.footer-tools button{border:0;background:none;padding:4px;font:inherit;letter-spacing:inherit}.footer-tools>button>img{width:16px;height:16px;display:block}.keyboard-hint{padding-left:18px;border-left:1px solid #acb6b0;white-space:nowrap}
.zoom-menu{position:fixed;bottom:52px;right:30px;padding:14px;z-index:110;background:white;border:1.5px solid var(--ink);width:298px;box-shadow:0 8px 30px #20342d20}.zoom-menu>div{display:flex;justify-content:space-between;align-items:center}.zoom-menu button{border:0;background:white;display:flex;gap:10px;align-items:center;padding:10px 6px;font-size:13px}.zoom-menu img{width:18px;height:18px}.zoom-menu>button{width:100%}.zoom-menu p{font-size:10px;color:#6a756d;margin:8px 0 0}.nav-backdrop{position:fixed;inset:68px 0 0;z-index:80;background:#14201930;border:0}.nav-backdrop:hover{background:#14201930!important}.sidebar{position:fixed;inset:68px auto 0 0;width:min(410px,100%);z-index:90;background:#fbfcf9;border-right:2px solid var(--ink);box-shadow:12px 0 30px #1f302216;display:flex;flex-direction:column}.sidebar-header{padding:25px 24px 18px;display:flex;justify-content:space-between;align-items:center;gap:20px}.sidebar-header small{font:10px/1.4 Menlo,Consolas,monospace;letter-spacing:1px;color:#7b877b}.sidebar-header h1{font-size:25px;letter-spacing:-.6px;margin:8px 0 0}.sidebar-header .icon-button{width:34px;height:34px;padding:8px;border:0;background:none}.sidebar-header .icon-button img{width:17px;height:17px}.panel-tabs{display:flex;gap:24px;padding:0 24px;border-bottom:1px solid #dce1da;flex-shrink:0}.panel-tabs button{background:none;border:0;border-bottom:3px solid transparent;padding:14px 0;font-size:13px}.panel-tabs button.selected{border-color:#d93d43;font-weight:700}.panel{padding:20px 24px;overflow-y:auto;min-height:0;flex:1}.toc-chapter{border-bottom:1px solid #dce1da}.toc-chapter summary{font-size:14px;line-height:1.4;cursor:pointer;padding:16px 0;list-style:none;display:flex;gap:12px}.toc-chapter summary:before{content:'›';font-weight:bold;transform:rotate(0deg);width:8px;flex-shrink:0}.toc-chapter[open] summary:before{transform:rotate(90deg)}.toc-chapter summary span{font:11px/20px Menlo,Consolas,monospace;color:#7f8e7e;flex-shrink:0}.toc-chapter a{display:block;font-size:12px;line-height:1.6;padding:7px 0 7px 24px;color:#4b554e}.toc-chapter a[aria-current=page]{color:#c3343c;font-weight:600}.cover-link,.wiring-link{display:block;padding:10px 0;font-size:13px;font-weight:600}.panel-search{display:flex;align-items:center;border:1px solid #abb8ad;background:white}.panel-search input{width:100%;min-width:0;border:0;background:none;padding:13px 10px;font-size:13px;outline-offset:0}.panel-search button{padding:10px;border:0;background:none;display:grid;place-items:center}.panel-search img{width:14px;height:14px}.search-example,.panel-intro{font-size:12px;line-height:1.7;color:#788277}.search-result{display:block;padding:16px 0;border-bottom:1px solid #dce1da}.search-result strong{display:block;font-size:14px;line-height:1.45}.search-result small{display:block;font:11px/1.7 Menlo,Consolas,monospace;color:#8a524e;margin:5px 0}.search-result p{font-size:12px;line-height:1.7;margin:0;color:#667169}.search-result:hover strong{color:#bd333b}#searchStatus{font-size:12px;color:#69766a;margin:18px 0 0}.search-more{margin-top:16px;width:100%;padding:11px;background:white;border:1px solid #aab7ac;font-size:13px}.saved-row{display:flex;border-bottom:1px solid #dce1da;align-items:center;gap:12px}.saved-row a{flex:1;padding:16px 0;font-size:13px;line-height:1.5}.saved-row small{display:block;font:11px/1.7 Menlo,Consolas,monospace;color:#788476}.saved-row button{border:0;background:none;padding:8px}.saved-row img{width:13px;height:13px}.empty-panel{font-size:13px;color:#778276;line-height:1.75}.site-information{margin-top:28px;border-top:1px solid #d5ded4;padding-top:22px;font-size:11px;color:#7d897c}.site-information h2{font-size:11px;font-weight:400;margin:0 0 10px}.site-information strong{font-size:24px;color:#52644f}.site-information dl{margin:18px 0}.site-information dl>div{display:flex;justify-content:space-between;gap:20px;margin:10px 0}.site-information dd{margin:0}.feedback-entry{display:flex;align-items:center;gap:10px;border:1px solid #aab5a8;background:white;font-size:12px;padding:10px 12px}.feedback-entry img{width:16px;height:16px}.feedback-dialog{border-radius:0!important}.wiring-dialog{max-width:calc(100vw - 40px);width:1300px;max-height:calc(100dvh - 40px);padding:20px;border:2px solid var(--ink);background:#f8faf6}.wiring-dialog::backdrop{background:#142019aa}.wiring-dialog header{display:flex;justify-content:space-between;align-items:center;gap:20px}.wiring-dialog h2{font-size:17px}.wiring-controls{display:flex;align-items:center;gap:16px;font-size:13px;margin:10px 0}.wiring-controls button{border:1px solid #a6b1a4;background:white;padding:8px}.wiring-controls img{width:17px;height:17px;display:block}.wiring-controls a{margin-left:auto;text-decoration:underline}.wiring-scroll{overflow:auto;max-height:72dvh;background:white}.wiring-scroll img{display:block;width:100%;max-width:none}.icon-button[aria-pressed=true]{background:#dce8d7}
@media(min-width:1600px){.reader{gap:22px}.page-navigation{width:min(1000px,calc(100% - 220px))}.page-nav{flex-basis:390px}.destination{font-size:12px}}
@media(max-width:1200px){.masthead{gap:24px;padding:0 24px}.brand img{width:48px}.brand strong{font-size:18px}.library-nav{gap:20px;font-size:13px}.header-actions{gap:12px}.header-actions form{width:190px}.download{padding:0 12px}.masthead .bot-link{font-weight:400}.icon-rail{left:20px}}
@media(max-width:1050px){.masthead{gap:22px}.header-actions form{display:none}.library-nav{justify-content:center;gap:24px}.reader{gap:14px}.page-navigation{width:calc(100% - 160px);gap:22px}.page-nav{padding:0 12px;gap:10px}.direction{font-size:14px}.destination{font-size:10px}.breadcrumb{width:calc(100% - 160px)}}
@media(max-width:680px){body{grid-template-rows:105px minmax(0,1fr) 44px}.masthead{padding:9px 16px 0;gap:0;flex-wrap:wrap;justify-content:space-between;border-bottom-width:2px}.brand{gap:10px}.brand strong{font-size:17px}.brand img{width:39px;height:32px}.header-actions{order:2}.download{height:34px;font-size:11px;padding:0 9px;gap:6px}.download img{width:15px;height:15px}.library-nav{order:3;height:44px;width:100%;flex:none;justify-content:space-between;font-size:12px;gap:12px}.library-nav .bot-link{font-size:12px}.bot-link img{width:13px;height:13px}.library-nav a.active:after{border-bottom-width:3px}.icon-rail{left:10px;top:174px;gap:8px}.icon-button{width:32px;height:32px;padding:7px;border-width:1px}.icon-button img{width:17px;height:17px}.reader{padding:12px 0;grid-template-rows:16px 50px minmax(0,1fr) 50px;gap:12px}.breadcrumb{width:calc(100% - 32px);gap:7px;letter-spacing:.25px;font-size:9px;line-height:16px}.breadcrumb span:first-child{display:none}.breadcrumb span:nth-child(2){display:none}.page-navigation{width:calc(100% - 32px);gap:14px}.page-nav{flex:1;padding:6px 10px;gap:3px;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;border-width:1.5px}.direction{font-size:12px}.direction img{width:9px;height:9px}.destination{font-size:9px;line-height:1.4;width:100%}.paper-stage{padding:0 28px 0 54px}.paper-frame{border-width:1px}.chapter-tab{font-size:8px;line-height:18px;margin-left:1px;padding:10px 0}.reader-footer{margin:0 16px;font-size:9px;gap:5px;letter-spacing:0}.footer-tools{gap:10px}.keyboard-hint{display:none}.page-jump{gap:2px}.page-jump input{width:30px}.reader-footer button{font-size:9px}.sidebar{inset:105px auto 0}.nav-backdrop{top:105px}.sidebar-header{padding-top:20px}.sidebar-header h1{font-size:23px}.reader-footer img{width:14px;height:14px}.zoom-menu{bottom:52px;right:16px}.readable-text{padding:18px;font-size:15px}.wiring-dialog{max-width:calc(100vw - 16px);max-height:calc(100dvh - 16px);padding:10px}.wiring-controls{gap:10px;font-size:10px}.wiring-dialog h2{font-size:14px}.wiring-controls a{max-width:100px}}
@media(max-height:650px) and (min-width:681px){body{grid-template-rows:58px minmax(0,1fr) 36px}.reader{grid-template-rows:16px 42px minmax(0,1fr) 42px;gap:10px;padding:10px 0}.masthead{height:58px}.sidebar{top:58px}.nav-backdrop{top:58px}.icon-rail{top:124px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media print{body{display:block;height:auto;background:white}.masthead,.icon-rail,.page-navigation,.breadcrumb,.reader-footer,.chapter-tab,.sidebar{display:none}.reader,.paper-stage{display:block;padding:0;overflow:visible}.paper-frame{width:100%!important;height:auto!important;border:0}.page-surface>img{width:100%;height:auto}}

/* The original PDF stays undistorted inside a single-page reading viewport. */
.page-surface{width:100%;height:100%;overflow:auto;scrollbar-width:thin;overscroll-behavior:contain;background:#fff}.page-surface>img{width:100%;height:auto;max-width:none;object-fit:initial}.page-surface .page-error{z-index:2}.reader{grid-template-rows:54px minmax(0,1fr) 54px;gap:22px;padding:20px 0 28px}.breadcrumb{display:none}.paper-stage{padding-top:0;padding-bottom:0}
@media(min-width:1350px){.library-nav{margin-left:44px}}@media(max-width:1300px){.header-actions form{width:190px}.masthead{gap:24px}.library-nav{gap:22px}}
@media(max-width:680px){.reader{grid-template-rows:50px minmax(0,1fr) 50px;gap:12px;padding:14px 0}.icon-rail{top:177px}.paper-stage{padding-left:54px;padding-right:28px}.page-surface>img{min-width:100%}}
@media(max-height:650px) and (min-width:681px){.reader{grid-template-rows:42px minmax(0,1fr) 42px;gap:10px;padding:10px 0}}

.readable-text pre{white-space:pre-wrap;overflow-wrap:anywhere;font:13px/1.65 Menlo,Consolas,monospace}
/* Grid tracks may shrink below the PDF's intrinsic width on a phone. */
html{width:100%;min-width:0}body{width:100%;min-width:0;grid-template-columns:minmax(0,1fr)}.reader,.paper-stage,.reader-footer,.masthead{min-width:0}.reader{width:100%}.page-navigation{min-width:0}.page-nav{max-width:100%}

@media(min-width:1100px){body[data-book-kind="catalog"] .page-navigation{width:min(1120px,calc(100% - 180px))}}

/* Reflowed text follows the exact current PDF page, with legible type on phones. */
.is-text-mode .page-surface{overflow:hidden}.is-text-mode .paper-frame{max-width:100%}.readable-text{font:var(--reading-size,17px)/1.75 Arial,Helvetica,sans-serif;overflow-x:hidden;overflow-y:auto;padding:clamp(20px,4vw,44px);scrollbar-gutter:stable;color:#252b27;overflow-wrap:break-word;tab-size:4}.reading-heading{border-bottom:1px solid #d5ddd3;padding-bottom:20px;margin-bottom:25px}.reading-kicker{font-size:.68em;line-height:1.6;color:#647561;letter-spacing:.06em}.readable-text h1{font-size:1.55em;line-height:1.3;letter-spacing:-.025em;margin:10px 0 0}.readable-text h2{font-size:1.28em;line-height:1.4;margin:1.5em 0 .7em}.readable-text h3,.readable-text h4{font-size:1.08em;line-height:1.45;margin:1.45em 0 .6em}.readable-text p{margin:.8em 0}.readable-text ul{padding-left:1.3em}.readable-text a{color:#386c3a;text-decoration:underline;text-underline-offset:3px}.readable-text table{width:100%;min-width:var(--table-min,320px);table-layout:fixed;font-size:.87em;line-height:1.55}.readable-text td,.readable-text th{padding:.7em .8em;overflow-wrap:anywhere;border-color:#c8d1c5}.readable-text th{background:#edf1e9;font-weight:700}.readable-text tbody tr:nth-child(even){background:#f9faf7}.reading-table-wrap{max-width:100%;margin:1.2em 0;overflow-x:auto;overscroll-behavior-inline:contain;scrollbar-width:thin;border-bottom:1px solid #c8d1c5}.reading-table-wrap:focus-visible{outline:2px solid var(--green);outline-offset:3px}.readable-text .manual-note{border-left:3px solid #62845d;background:#f2f5ee;padding:1em 1.1em;margin:1.3em 0;font-size:.94em}.reading-figure{margin:1.5em 0}.reading-figure svg{display:block;width:100%;height:auto;border:1px solid #e1e6dd;background:white}.reading-figure figcaption{margin-top:.5em;font-size:.73em;color:#6b7968}.reading-symbol{max-width:110px;margin:.6em 0}.reading-symbol svg{display:block;width:100%;height:auto}.reading-captions{margin:1em 0 1.6em;font-size:.88em;line-height:1.65;border:1px solid #d5ddd1;padding:.7em 1em}.reading-captions summary{cursor:pointer;color:#4f654b;font-weight:600}.reading-captions li{margin:.5em 0}.search-scopes{display:flex;gap:5px;flex-wrap:wrap;margin-top:16px}.search-scopes button{font-size:11px;padding:8px 10px;border:1px solid #c9d3c6;background:white}.search-scopes button[aria-pressed=true]{background:#e8eee2;border-color:#6b8861}.search-result mark{background:#e9edcb;color:inherit;padding:0 1px}.search-result{overflow-wrap:anywhere}
@media(max-width:680px){.is-text-mode .paper-stage{padding-left:50px;padding-right:20px}.readable-text{padding:18px 16px;font-size:var(--reading-size,17px);line-height:1.7}.readable-text h1{font-size:1.3em}.readable-text table{font-size:.85em}.readable-text td,.readable-text th{padding:.6em}.reading-kicker{letter-spacing:0}.is-text-mode .chapter-tab{font-size:8px}}

/* One bottom navigation bar; an unobstructed reading mode for small screens. */
.reader{grid-template-rows:minmax(0,1fr) 54px}.exit-screen-reading{position:fixed;top:max(8px,env(safe-area-inset-top));right:max(10px,env(safe-area-inset-right));z-index:140;padding:8px 12px;border:1px solid #9da99a;background:#fffffff2;font-size:12px;box-shadow:0 2px 10px #00000010}.screen-reading{grid-template-rows:minmax(0,1fr) calc(44px + env(safe-area-inset-bottom));padding-top:env(safe-area-inset-top);background:#f8faf6}.screen-reading .masthead,.screen-reading .icon-rail,.screen-reading .chapter-tab{display:none}.screen-reading .reader{grid-template-rows:minmax(0,1fr) 48px;padding:8px 0 10px;gap:10px}.screen-reading .paper-stage{padding:0 10px;touch-action:pan-y pinch-zoom}.screen-reading .page-surface{touch-action:pan-y pinch-zoom}.screen-reading .reading-table-wrap{touch-action:pan-x pan-y pinch-zoom}.screen-reading .page-navigation{width:calc(100% - 20px);gap:12px}.screen-reading .reader-footer{margin:0 10px;padding-bottom:env(safe-area-inset-bottom)}.screen-reading .readable-text{padding-top:40px}.screen-reading .paper-frame{border:0;box-shadow:none}.screen-reading .exit-screen-reading{min-height:36px}.footer-tools #readingModeButton{font-weight:700}
@media(max-width:680px){.reader{grid-template-rows:minmax(0,1fr) 50px}.footer-tools{gap:8px}.footer-tools button{min-height:32px;min-width:28px}.screen-reading .reader{grid-template-rows:minmax(0,1fr) 48px}.screen-reading .readable-text{padding-left:20px;padding-right:20px}.screen-reading .keyboard-hint{display:none}.screen-reading .reader-footer{font-size:9px}.screen-reading .page-nav{min-height:44px}.screen-reading .page-surface>img{min-width:0}}
@media(max-height:650px) and (min-width:681px){.reader{grid-template-rows:minmax(0,1fr) 42px}}
.catalog-reading-table td,.catalog-reading-table th{white-space:pre-line}.catalog-reading-table td:nth-child(2){overflow-wrap:normal;word-break:normal;font-variant-numeric:tabular-nums}
.catalog-hidden-note{font-size:.8em;line-height:1.6;color:#776238;background:#fff8df;padding:10px 12px;border-left:3px solid #d3b359}.catalog-reading-table th:nth-child(4),.catalog-reading-table td:nth-child(4){background:#fff8df}
@media(max-width:680px){.icon-rail{left:8px;gap:8px}.icon-rail .icon-button{width:40px;height:40px;padding:10px}.search-scopes button{min-height:44px}.footer-tools button{min-height:42px}.footer-tools #readingModeButton{min-width:32px}.reading-table-wrap{scrollbar-gutter:stable}}
.catalog-reading-table td:first-child,.catalog-reading-table th:first-child{white-space:nowrap;overflow-wrap:normal}
@media(max-width:680px){.reading-table-wrap.is-wide::before{content:'↔ Прокрутите таблицу по горизонтали';display:block;position:sticky;left:0;max-width:100%;padding:8px 0;font-size:11px;line-height:1.5;color:#61745b;background:#fff}}
.screen-reading.is-page-zoomed .paper-stage,.screen-reading.is-page-zoomed .page-surface{touch-action:pan-x pan-y pinch-zoom}
/* The electrical diagram has its own top-level reader. */
@media(max-width:1400px) and (min-width:681px){.masthead .header-actions form{display:none}.masthead .library-nav{margin-left:0;gap:20px}}
@media(max-width:680px){.library-nav{gap:10px;font-size:11px}.library-nav .bot-link{font-size:11px;gap:4px}.library-nav .bot-link img{display:none}}