/* Живая книга «ChatGPT для чайников».
Два режима чтения: «Страницы» (разворот, листание) и «Лента» (одна прокрутка, как лендинг; на телефоне всегда).
Две темы: светлая и тёмная (по умолчанию как в системе). Размер шрифта A− / A+ (переменная --fs). */
:root{
--bg:#FFFFFF;--paper:#FFFFFF;--desk:#ECECEE;--bar:rgba(255,255,255,.94);--rbar:rgba(255,255,255,.72);
--ink:#0D0D0D;--on-ink:#FFFFFF;--muted:#5D5D5D;--soft:#6B6B6B;--line:rgba(13,13,13,.09);--line2:#E3E3E3;
--surface:#F4F4F4;--blue:#5484EB;--blue-ink:#2F62D6;--blue-soft:#EFF6FE;--blue-line:#D6E3FB;--green:#10A37F;
--prompt:#0D0D0D;--prompt-ink:#FFFFFF;--prompt-lbl:#8FB0F5;--mark:#FFF3B0;--shadow:0 1px 2px rgba(0,0,0,.05),0 10px 34px rgba(0,0,0,.07);
--spine-l:rgba(0,0,0,.05);--spine-r:rgba(0,0,0,.06);--turn:rgba(255,255,255,.8);
--r-s:10px;--r-m:16px;--r-l:22px;--top:56px;--ease:cubic-bezier(.22,.8,.2,1);
--pw:560px;--ph:760px;--pad:52px;--padt:54px;--padb:58px;--gut:0px;--fs:16.5px;color-scheme:light}
:root[data-theme=dark]{
--bg:#121213;--paper:#1B1B1D;--desk:#0B0B0C;--bar:rgba(18,18,19,.92);--rbar:rgba(27,27,29,.8);
--ink:#ECECEE;--on-ink:#0D0D0D;--muted:#B4B4B9;--soft:#9A9AA0;--line:rgba(255,255,255,.1);--line2:#333336;
--surface:#242427;--blue:#6E97F0;--blue-ink:#8DB0FF;--blue-soft:#1C2536;--blue-line:#2C3B5A;--green:#2BC39B;
--prompt:#26262A;--prompt-ink:#F2F2F2;--prompt-lbl:#8DB0FF;--mark:#5A4B00;--shadow:0 1px 2px rgba(0,0,0,.4),0 10px 34px rgba(0,0,0,.45);
--spine-l:rgba(0,0,0,.35);--spine-r:rgba(0,0,0,.4);--turn:rgba(40,40,44,.9);color-scheme:dark}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink)}
body{font:17px/1.65 Onest,system-ui,sans-serif;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;transition:background .25s}
a{color:var(--blue-ink);text-decoration:none}a:hover{text-decoration:underline}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:6px}
p{margin:0 0 .85em}strong{font-weight:700}
.kick{font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--blue-ink)}
.skip{position:absolute;left:-999px;top:8px;background:var(--paper);padding:8px 12px;border-radius:8px;z-index:100}.skip:focus{left:8px}
.btn{display:inline-block;border:0;border-radius:999px;padding:12px 22px;background:var(--ink);color:var(--on-ink);font-weight:600;font-size:15px;text-decoration:none}
.btn:hover{text-decoration:none;opacity:.9}.btn.ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--ink)}
.btn.off{background:var(--surface);color:var(--soft)}
[hidden]{display:none!important}
/* картинки зайчика на белом фоне: в тёмной теме лежат на светлой карточке */
[data-theme=dark] .op-bunny,[data-theme=dark] .hero-bunny,[data-theme=dark] .tip img,[data-theme=dark] .todo img{background:#fff;border-radius:18px;padding:6px}
[data-theme=dark] figure img{filter:brightness(.92)}
/* шапка */
.top{position:sticky;top:0;z-index:40;height:var(--top);display:flex;align-items:center;gap:8px;padding:0 14px;
background:var(--bar);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:9px;color:var(--ink);font-weight:700;letter-spacing:-.01em;white-space:nowrap;margin-left:4px}.brand:hover{text-decoration:none}
.brand svg path{fill:var(--ink)}
.sp{flex:1}
.tb{display:inline-flex;align-items:center;justify-content:center;gap:7px;height:36px;min-width:36px;border:1px solid var(--line);background:var(--paper);border-radius:999px;padding:0 13px;font-size:14px;color:var(--ink);white-space:nowrap}
.tb:hover{border-color:var(--ink);text-decoration:none}
.tb.icon{padding:0 9px}.tb kbd{font:12px Onest;color:var(--soft)}
.tb.on{background:var(--ink);color:var(--on-ink);border-color:var(--ink)}
.seg{display:flex;background:var(--surface);border-radius:999px;padding:3px}
.seg a,.seg button{border:0;background:none;padding:5px 12px;border-radius:999px;font-size:14px;color:var(--muted);white-space:nowrap}
.seg a:hover,.seg button:hover{text-decoration:none;color:var(--ink)}
.seg .on{background:var(--paper);color:var(--ink);font-weight:600;box-shadow:0 0 0 1px var(--line)}
.fsz{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;height:36px;background:var(--paper)}
.fsz button{border:0;background:none;padding:0 11px;font-weight:700;color:var(--ink)}.fsz button:hover{background:var(--surface)}
.fsz button:disabled{opacity:.3;cursor:default}.fsz .sm{font-size:12px}.fsz .lg{font-size:16px}
.rd-only{display:none!important}.reading .rd-only{display:flex!important}
.guest-only{display:none!important}.guest .guest-only{display:inline-flex!important}
.guest .buyer-only,body:not(.guest) .guest-block{display:none!important}
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);z-index:1000;background:var(--ink);color:var(--bg);padding:12px 20px;border-radius:999px;font-size:15px;box-shadow:0 8px 30px rgba(0,0,0,.18);transition:opacity .4s;max-width:calc(100vw - 32px);text-align:center}
.toast.out{opacity:0}
.short{display:none}
/* выдвижное оглавление */
.side{position:fixed;top:0;left:0;bottom:0;width:min(380px,92vw);background:var(--paper);z-index:60;overflow:auto;padding:0 12px 40px;
transform:translateX(-102%);transition:transform .32s var(--ease);box-shadow:0 0 0 1px var(--line),0 20px 60px rgba(0,0,0,.18)}
.side:not(.open){visibility:hidden;transition:transform .32s var(--ease),visibility 0s .32s}
.side.open{transform:none}
.scrim{position:fixed;inset:0;background:rgba(0,0,0,.32);z-index:55;opacity:0;pointer-events:none;transition:opacity .3s}
.scrim.on{opacity:1;pointer-events:auto}
.toc-top{position:sticky;top:0;background:var(--paper);display:flex;justify-content:space-between;align-items:center;padding:16px 8px 10px;font-size:17px;z-index:1}
.toc-x{border:0;background:none;font-size:26px;line-height:1;padding:0 6px;color:var(--muted)}
.side ol{list-style:none;margin:0;padding:0}
.side .kick{margin:14px 10px 6px}
.side li.part{font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--soft);margin:14px 10px 4px}
.side a{display:flex;gap:10px;padding:7px 10px;border-radius:10px;color:var(--ink);font-size:14.5px;line-height:1.35}.side a:hover{background:var(--surface);text-decoration:none}
.side li.on a{background:var(--blue-soft);font-weight:600}
.side .n{color:var(--soft);font-size:12.5px;font-weight:600;min-width:20px}
.toc-secs a{justify-content:space-between}.toc-secs .pg{color:var(--soft);font-size:12.5px;flex:none}
.toc-secs li.cur a{background:var(--blue-soft);font-weight:600}
.toc-here{border-bottom:1px solid var(--line);padding-bottom:10px}
.lock-i{display:inline-block;width:9px;height:11px;margin-left:6px;vertical-align:-1px;opacity:.5;background:currentColor;
-webkit-mask:url('data:image/svg+xml;utf8,') no-repeat center/contain;
mask:url('data:image/svg+xml;utf8,') no-repeat center/contain}
.guest .side li.paid .t::after,.guest .part-card li.paid .tt::after{content:"";display:inline-block;width:9px;height:11px;margin-left:6px;vertical-align:-1px;opacity:.5;background:currentColor;
-webkit-mask:url('data:image/svg+xml;utf8,') no-repeat center/contain;
mask:url('data:image/svg+xml;utf8,') no-repeat center/contain}
/* ===== режим «Страницы»: разворот ===== */
.paged.reading{overflow:hidden}
.paged .reader{position:fixed;top:var(--top);left:0;right:0;bottom:0;display:flex;flex-direction:column;background:var(--desk)}
.paged .desk{flex:1;display:flex;align-items:center;justify-content:center;gap:18px;min-height:0}
.paged .spread{position:relative;width:calc(2*var(--pw) + var(--gut));height:var(--ph);flex:none}
.paged .leaf{position:absolute;top:0;width:var(--pw);height:var(--ph);background:var(--paper);box-shadow:var(--shadow)}
.paged .pl{left:0;border-radius:8px 0 0 8px;background:linear-gradient(to left,var(--spine-l),transparent 38px) var(--paper)}
.paged .pr{right:0;border-radius:0 8px 8px 0;background:linear-gradient(to right,var(--spine-r),transparent 38px) var(--paper)}
.pfoot{position:absolute;left:var(--pad);right:var(--pad);bottom:22px;display:flex;justify-content:space-between;font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--soft)}
.pno{font-weight:600;color:var(--muted)}
.leaf.blank .pfoot{visibility:hidden}
.paged .view{position:absolute;left:var(--pad);top:var(--padt);width:calc(2*var(--pw) + var(--gut) - 2*var(--pad));height:calc(var(--ph) - var(--padt) - var(--padb));overflow:hidden}
.paged .flow{height:100%;width:100%;column-width:calc(var(--pw) - 2*var(--pad));column-gap:calc(2*var(--pad) + var(--gut));column-fill:auto}
.paged .view{will-change:opacity,transform}
.flow{font-size:var(--fs);line-height:1.62}
.flow.instant{transition:none}
.turn{width:46px;height:46px;border-radius:50%;border:0;background:var(--turn);font-size:30px;line-height:1;color:var(--muted);flex:none;box-shadow:0 1px 3px rgba(0,0,0,.12)}
.turn:hover{color:var(--ink)}.turn:disabled{opacity:.25;cursor:default}
.rbar{height:52px;display:flex;align-items:center;gap:16px;padding:0 24px;background:var(--rbar);border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.rbar .scrub{flex:1;accent-color:var(--blue)}
.rb-ch,.rb-pg{white-space:nowrap;min-width:110px}.rb-pg{text-align:right}
/* разрывы страниц */
.paged .flow>*:not(.sec),.paged .flow .sec>*:not(.fork),.paged .flow figure,.paged .flow .pcard,.paged .flow .fact,.paged .flow .tip,.paged .flow table,.paged .flow .pull,.paged .fork-tabs,.paged .flow .todo-head{break-inside:avoid-column}
.paged .flow .sec,.paged .flow .fork,.paged .flow .fork-pane,.paged .flow .todo{break-inside:auto}
/* чек-лист целиком, если помещается на лист; длинный переносится только между пунктами */
.paged .flow .todo li{break-inside:avoid-column}
.paged .flow p.subhead,.paged .fork-note,.paged .todo-head{break-after:avoid-column}
.paged .flow .sec>p:not(.fork),.paged .flow .sec>ul:not(.fork),.paged .flow .sec>ol:not(.fork),.paged .flow>p:not(.sec),.paged .flow>ul:not(.sec),.paged .flow>ol:not(.sec),.paged .fork-pane>p,.paged .fork-pane>ol,.paged .fork-pane>ul,.paged .todo ul{break-inside:auto;orphans:3;widows:3}
.paged .flow h2,.paged .flow h3,.paged .fork-title{break-after:avoid-column;break-inside:avoid-column}
.paged .opener{break-after:column;height:100%;justify-content:safe center}
.paged .op-bunny{flex:0 1 auto;min-height:90px;max-height:42%}
.paged .opener>*:not(.op-bunny){flex:none}
.paged .push{break-before:column}
.paged .endcard{display:none}
.paged .flow table{font-size:.8em}.paged .flow td{padding:5px 6px}
.rb-next{color:var(--blue-ink);font-weight:600}
/* титул главы */
.opener{display:flex;flex-direction:column;justify-content:center;gap:10px;padding-bottom:10px}
.opener h1{font-size:2.35em;line-height:1.06;letter-spacing:-.03em;margin:4px 0 0}
.opener .ch-sub{font-size:1.08em;color:var(--muted);margin:0;line-height:1.45}
.op-bunny{width:min(100%,380px);max-height:42%;object-fit:contain;align-self:center;margin:8px 0}
.op-note{font-size:12.5px;color:var(--soft);margin:0}
.opener .upd{align-self:flex-start}
.composer{display:flex;align-items:center;gap:12px;border:1.5px solid var(--line2);border-radius:28px;padding:10px 10px 10px 18px;color:var(--ink);text-align:left;background:var(--paper)}
.composer:hover{text-decoration:none;border-color:var(--ink)}
.composer .plus{font-size:22px;line-height:1}.composer .q{flex:1;font-size:15px}
.composer .send{width:32px;height:32px;border-radius:50%;background:var(--ink);color:var(--on-ink);display:flex;align-items:center;justify-content:center;flex:none}
.upd{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);background:var(--surface);border-radius:999px;padding:4px 12px}
.upd::before,.fact-date::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--green);flex:none}
/* текст */
.flow h2{font-size:1.45em;letter-spacing:-.02em;line-height:1.22;margin:0 0 .5em;padding-top:.3em}
.flow .sec{margin-top:1.4em}
.flow h3{font-size:1.12em;margin:1.1em 0 .4em}
.flow ul{padding-left:1.3em}.flow li{margin-bottom:.35em}
.flow ol{list-style:none;counter-reset:s;padding:0;margin:0 0 .9em}
.flow ol>li{counter-increment:s;position:relative;padding-left:2.2em}
.flow ol>li::before{content:counter(s);position:absolute;left:0;top:.1em;width:1.45em;height:1.45em;border-radius:50%;background:var(--blue);color:#fff;
font-size:.78em;font-weight:700;line-height:1.45em;text-align:center}
figure{margin:.9em 0}
figure img{display:block;width:100%;object-fit:contain;border-radius:var(--r-s);border:1px solid var(--line);cursor:zoom-in;background:#fff}
.paged figure img{max-height:calc((var(--ph) - var(--padt) - var(--padb)) * .62)}
figcaption{font-size:.8em;color:var(--muted);margin-top:.45em;line-height:1.4}
table{width:100%;border-collapse:collapse;font-size:.86em;margin:.8em 0}
th{font-size:.78em;letter-spacing:.05em;text-transform:uppercase;color:var(--soft);text-align:left;font-weight:600;padding:6px 8px;border-bottom:1px solid var(--line)}
td{padding:7px 8px;border-bottom:1px solid var(--line);vertical-align:top}
/* развилка */
.fork{margin:.6em 0 .9em}
.fork-tabs{display:inline-flex;flex-wrap:wrap;background:var(--surface);border-radius:14px;padding:4px;gap:2px}
.fork-tabs button{border:0;background:none;padding:7px 14px;border-radius:11px;font-size:.88em;color:var(--muted)}
.fork-tabs button[aria-selected=true]{background:var(--paper);color:var(--ink);font-weight:600;box-shadow:0 0 0 1px var(--line)}
.fork-note{font-size:.76em;color:var(--soft);margin:5px 0 8px}
.fork-pane{display:none}.fork-pane.on{display:block}
.fork-title{font-weight:700;margin:.4em 0 .5em}
/* факт, заметка, выноска, промпт, зайчик, чек-лист */
.fact{background:var(--surface);border-radius:var(--r-m);padding:12px 16px;margin:.9em 0;font-size:.9em;line-height:1.55}
.fact p:last-child,blockquote.note p:last-child{margin:0}
.fact-date{display:flex;align-items:center;gap:8px;font-size:.84em;font-weight:600;color:var(--muted);margin-bottom:4px}
.fact.changed{box-shadow:inset 0 0 0 1.5px var(--green)}
blockquote.note{margin:.9em 0;background:var(--blue-soft);border-radius:var(--r-m);padding:12px 16px;font-size:.9em}
.pull{font-size:1.3em;line-height:1.35;letter-spacing:-.015em;font-weight:600;margin:1.2em 0;padding-left:16px;border-left:3px solid var(--blue)}
.pcard{background:var(--prompt);color:var(--prompt-ink);border-radius:var(--r-l);padding:14px 18px 12px;margin:.9em 0;font-size:.9em;line-height:1.6}
.pcard .lbl{font-size:10.5px;font-weight:700;letter-spacing:.12em;color:var(--prompt-lbl);text-transform:uppercase;margin-bottom:5px}
.pcard p{margin:0 0 .5em}.pcard p:last-child{margin:0}
.pcard .fld{font:inherit;color:var(--prompt-ink);background:rgba(255,255,255,.12);border:0;border-bottom:1.5px dashed var(--prompt-lbl);border-radius:6px 6px 0 0;padding:0 5px;max-width:100%}
.pcard .fld::placeholder{color:#B9CBF7}
.pacts{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.pacts button{border:0;border-radius:999px;padding:7px 14px;font-size:13px;font-weight:600;min-height:34px}
.pacts .copy{background:#fff;color:#0D0D0D}.pacts .copy.done{background:var(--green);color:#fff}
.pacts .open{background:rgba(255,255,255,.14);color:var(--prompt-ink)}
.pcard .from{font-size:12.5px;color:#9A9A9A;margin-top:10px}.pcard .from a{color:#B9CBF7}
.tip{display:flex;gap:14px;align-items:center;border:1.5px solid var(--blue-line);border-radius:var(--r-l);padding:8px 14px 8px 6px;margin:1em 0}
.tip img{width:110px;flex:none;margin:0}.tip-body p{margin:0;font-size:.9em;line-height:1.5}
/* чек-лист: в книге без боковой картинки, зайчик маленький в шапке — иначе на развороте карточка рвётся колонкой */
.todo{background:var(--blue-soft);border-radius:var(--r-l);padding:14px 18px 10px;margin:1.2em 0 .6em}
.todo>img{display:none}
.todo-head{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.todo-head img{width:58px;height:58px;object-fit:contain;border-radius:12px;background:#fff;flex:none}
.todo-body .kick{display:none}
.todo ul{list-style:none;padding:0;margin:0}
.todo ul>li{position:relative;padding-left:28px;cursor:pointer;margin-bottom:6px;font-size:.93em}
.todo ul>li::before{content:"";position:absolute;left:0;top:4px;width:17px;height:17px;border-radius:6px;background:var(--paper);box-shadow:inset 0 0 0 1.5px var(--blue)}
.todo ul>li.done{color:var(--muted)}.todo ul>li.done::before{background:var(--green);box-shadow:none}
.todo ul>li.done::after{content:"✓";position:absolute;left:4px;top:0;color:#fff;font-size:12px;font-weight:700}
.todo ol>li{cursor:pointer}
.endcard{display:block;margin:1.6em 0 0;padding:18px 20px;border-radius:var(--r-l);background:var(--surface);color:var(--ink)}
.endcard:hover{text-decoration:none;background:var(--blue-soft)}
.endcard b{display:block;font-size:1.15em;margin:4px 0}.endcard span:last-child{color:var(--muted);font-size:.88em}
.locked{margin:1em 0 0;padding:22px;border-radius:var(--r-l);background:var(--blue-soft)}
.locked h3{font-size:1.3em;letter-spacing:-.02em;line-height:1.25;margin:6px 0}
.locked-acts{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.flash{animation:flash 1.6s var(--ease)}
@keyframes flash{0%,40%{background:var(--mark)}100%{background:transparent}}
/* ===== режим «Лента»: одна прокрутка, как лендинг ===== */
.lenta .reader{background:var(--bg)}
.lenta .leaf,.lenta .turn,.lenta .rbar{display:none}
.lenta .view{max-width:720px;margin:0 auto;padding:34px 24px 80px}
.lenta .opener{min-height:0;margin-bottom:14px}
.lenta .op-bunny{max-height:none;width:min(100%,360px)}
.lenta .flow{font-size:calc(var(--fs) + .5px)}
/* обычные страницы: главная, промпты, шпаргалка, вход */
.home{max-width:1120px;margin:0 auto;padding:28px 40px 80px}
.hero{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:20px;align-items:center}
.tp-logo{display:flex;align-items:center;gap:10px;font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.tp-logo svg path{fill:var(--ink)}
.hero-name{font-size:92px;font-weight:700;letter-spacing:-.05em;line-height:.95;margin:28px 0 0}
.tp-pill{display:inline-block;background:var(--ink);color:var(--on-ink);border-radius:999px;padding:6px 24px 10px;font-size:40px;font-weight:700;letter-spacing:-.03em;margin-top:12px}
.hero-lead{font-size:19px;max-width:580px;margin:24px 0}
.hero-btns{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.hero-bunny{width:340px}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:34px 0}
.features div{background:var(--surface);border-radius:var(--r-l);padding:18px 20px}
.features b{display:block;font-size:17px;margin-bottom:4px}.features span{font-size:14.5px;color:var(--muted);line-height:1.5}
.author{display:flex;gap:18px;align-items:center;border:1px solid var(--line);border-radius:var(--r-l);padding:18px 22px}
.tp-photo{width:84px;height:84px;border-radius:50%;object-fit:cover;object-position:center 15%}
.tp-name2{font-size:22px;font-weight:700}.tp-role{font-size:14px;color:var(--muted);line-height:1.45}
.contents h2{font-size:34px;letter-spacing:-.03em;margin:46px 0 6px}.free-note{color:var(--muted);font-size:15px}
.parts{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:14px}
.part-card{border:1px solid var(--line);border-radius:var(--r-l);padding:18px 18px 8px}
.part-card ol{list-style:none;margin:10px 0 0;padding:0}
.part-card a{display:flex;gap:12px;padding:9px 0;color:var(--ink);border-top:1px solid var(--line);font-weight:600;font-size:15.5px;line-height:1.35}.part-card a:hover{text-decoration:none;color:var(--blue-ink)}
.part-card small{display:block;margin-top:3px!important;font-weight:400;color:var(--muted);font-size:13.5px;margin-top:2px}
.part-card .n{color:var(--soft);font-size:13px;width:26px;flex:none;padding-top:2px}
.guest .part-card li.free .tt::after{content:"бесплатно";display:inline-block;vertical-align:2px;margin-left:8px;font-size:10.5px;font-weight:700;letter-spacing:.03em;color:var(--green);background:rgba(16,163,127,.12);border-radius:999px;padding:2px 8px}
.resume{display:flex;gap:12px;align-items:center;background:var(--blue-soft);border-radius:var(--r-m);padding:12px 16px;margin:0 0 18px;font-size:15px;color:var(--ink)}
.lib,.cheat,.login,.news{max-width:820px;margin:0 auto;padding:28px 40px 80px}
.lib h1,.cheat h1,.login h1,.news h1{font-size:40px;letter-spacing:-.03em;margin:8px 0}
.lib .pcard,.cheat{font-size:var(--fs)}
.ch-sub{font-size:18px;color:var(--muted);line-height:1.45}
.lib-q,.cheat-q{width:100%;font:inherit;font-size:17px;border:1px solid var(--line);border-radius:14px;padding:12px 16px;margin:14px 0 10px;background:var(--paper);color:var(--ink)}
.chips{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.chips button{border:1px solid var(--line);background:var(--paper);border-radius:999px;padding:6px 14px;font-size:14px}.chips button.on{background:var(--ink);color:var(--on-ink);border-color:var(--ink)}
.lib-count{font-size:13.5px;color:var(--soft);margin:6px 0}
.login form{display:grid;gap:10px;max-width:420px;margin:18px 0}
.login label{font-size:14px;font-weight:600}
.login input{font:inherit;font-size:18px;border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:var(--paper);color:var(--ink)}
.login-msg{min-height:24px;color:var(--muted)}.login-msg.err{color:#E0584C}
/* поиск, превью ссылки, увеличение */
.dlg{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:70;display:none;align-items:flex-start;justify-content:center;padding-top:10vh}
.dlg.open{display:flex}
.dlg-box{background:var(--paper);border-radius:20px;width:min(660px,92vw);max-height:72vh;overflow:auto;padding:14px}
.dlg-box input{width:100%;font:inherit;font-size:18px;border:0;border-bottom:1px solid var(--line);padding:10px 8px 14px;outline:0;background:transparent;color:var(--ink)}
.hit{display:block;padding:10px;border-radius:12px;color:var(--ink)}.hit:hover,.hit.sel{background:var(--surface);text-decoration:none}
.hit b{display:block;font-size:14px}.hit span{font-size:13.5px;color:var(--muted)}.hit mark{background:var(--mark);color:inherit}
.pop{position:absolute;z-index:75;max-width:320px;background:var(--paper);border-radius:14px;box-shadow:0 0 0 1px var(--line),0 8px 24px rgba(0,0,0,.12);padding:12px 14px;font-size:14px;line-height:1.45;display:none}
.pop b{display:block;font-size:15px;margin:2px 0 4px}
.zoom{position:fixed;inset:0;background:rgba(13,13,13,.85);z-index:80;display:none;align-items:center;justify-content:center;cursor:zoom-out;padding:3vw}
.zoom.open{display:flex}.zoom img{max-width:100%;max-height:100%;border-radius:12px;background:#fff}
/* настройки чтения в шторке */
.toc-set{padding:4px 0 12px;border-bottom:1px solid var(--line)}
.set-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin:0 10px 10px}
.set-mode{margin:0 10px;display:inline-flex}
.lenta .set-mode button[data-m=pages]{opacity:.9}
/* ===== узкие экраны ===== */
@media (max-width:1180px){.top .brand span{display:none}}
@media (max-width:1000px){
.modes-nav,.top .mode-seg,.reading .top .mode-seg{display:none!important}
.top .fsz,.top .bm-btn,.reading .top .bm-btn{display:none!important}
.set-mode{display:none!important}.menu .lbl,.search-btn .long,.search-btn kbd{display:none}.search-btn .short{display:inline}
.top{gap:6px;padding:0 10px}
.home,.lib,.cheat,.login,.news{padding:18px 16px 60px}
.lenta .view{padding:18px 16px 60px}
.hero{grid-template-columns:1fr}.hero-name{font-size:62px}.tp-pill{font-size:30px}.hero-bunny{width:230px;justify-self:center}
.features{grid-template-columns:1fr}
.opener h1{font-size:2em}
.tip{flex-direction:column;align-items:flex-start}
table,thead,tbody,tr,th,td{display:block}thead{display:none}tr{border-bottom:1px solid var(--line);padding:8px 0}td{border:0;padding:2px 0}td:first-child{font-weight:600}
}
@media (max-width:640px){.fsz .sm,.fsz .lg{padding:0 8px}.acct{padding:0 10px}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
.todo ol>li.done{color:var(--muted)}
.paged .flow .pcard.long{break-inside:auto}
/* шторка: главные разделы; замок */
.toc-nav{display:flex;flex-direction:column;padding:2px 0 10px;border-bottom:1px solid var(--line)}
.toc-nav a{padding:9px 10px;border-radius:10px;color:var(--ink);font-size:15px}.toc-nav a:hover{background:var(--surface);text-decoration:none}
@media (min-width:1001px){.toc-nav{display:none}}
.locked-how{font-size:.9em;color:var(--muted)}
.locked-free{margin:14px 0 0;font-size:.95em}
/* iPhone увеличивает страницу при фокусе на поле мельче 16 px */
@media (max-width:1000px){.pcard .fld,.lib-q,.cheat-q,.login input,.dlg-box input{font-size:16px!important}}
/* ===== волна 2 ===== */
.aa-btn{font-weight:700;font-size:15px}
.buy-btn{background:var(--ink);color:var(--on-ink);border-color:var(--ink);font-weight:600}.buy-btn:hover{opacity:.9}
.aa-pop,.acct-pop{position:fixed;z-index:65;background:var(--paper);border-radius:16px;box-shadow:0 0 0 1px var(--line),0 12px 32px rgba(0,0,0,.14);padding:12px;min-width:280px}
.aa-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:8px 4px;font-size:14px;color:var(--muted)}
.aa-row .seg button{font-size:13.5px}
.acct-pop{display:flex;flex-direction:column;gap:2px;min-width:240px}.acct-pop[hidden]{display:none}
.acct-mail{font-size:13px;color:var(--muted);padding:4px 8px 8px;border-bottom:1px solid var(--line);margin-bottom:4px;word-break:break-all}
.acct-pop a,.acct-pop button{display:block;text-align:left;border:0;background:none;padding:9px 8px;border-radius:10px;color:var(--ink);font-size:15px}
.acct-pop a:hover,.acct-pop button:hover{background:var(--surface);text-decoration:none}
.op-meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.mins{font-size:12.5px;color:var(--muted)}
.rprog{display:none}
.lenta .rprog{display:block;position:fixed;top:var(--top);left:0;right:0;height:3px;z-index:39;background:transparent}
.lenta .rprog i{display:block;height:100%;width:0;background:var(--blue);transition:width .15s linear}
.bm-list{display:flex;flex-wrap:wrap;gap:8px;align-items:center;background:var(--surface);border-radius:var(--r-m);padding:10px 14px;margin:0 0 12px;font-size:14.5px}
.bm-list b{margin-right:4px}.bm-list a{background:var(--paper);border-radius:999px;padding:4px 12px;box-shadow:0 0 0 1px var(--line)}
.toc-bms{margin:10px 6px}
.home-resume{margin-bottom:6px}
.back-pill{position:fixed;left:50%;transform:translateX(-50%);top:calc(var(--top) + 12px);z-index:45;background:var(--ink);color:var(--on-ink);border-radius:999px;padding:11px 20px;font-size:15px;font-weight:600;box-shadow:0 8px 24px rgba(0,0,0,.2)}
.back-pill:hover{text-decoration:none;opacity:.92}
/* поиск */
.s-top{display:flex;gap:8px;align-items:center;border-bottom:1px solid var(--line)}
.s-top input{border:0!important;flex:1}
.s-close{border:0;background:var(--surface);border-radius:999px;padding:8px 14px;font-size:14px;color:var(--ink)}
.s-hint{padding:10px;color:var(--muted);font-size:14px}
.locked-hit b{color:var(--muted)}.lk{font-style:normal;font-size:12px;background:var(--surface);border-radius:999px;padding:1px 8px;margin-right:4px}
.dlg-box input:focus-visible{outline:none}.s-top:focus-within{box-shadow:inset 0 -2px 0 var(--blue)}
/* увеличение скрина */
html.noscroll,html.noscroll body{overflow:hidden}
.zoom{flex-direction:column}
.zoom-in{max-width:100%;max-height:calc(100% - 40px);overflow:auto;-webkit-overflow-scrolling:touch;display:flex;align-items:center;justify-content:center}
.zoom img{cursor:zoom-in}
.zoom.big .zoom-in{align-items:flex-start;justify-content:flex-start;width:100%;height:calc(100% - 40px)}
.zoom.big img{max-width:none;max-height:none;width:max(260%,1150px);cursor:zoom-out}
.zoom-x{position:absolute;top:14px;right:14px;width:44px;height:44px;border-radius:50%;border:0;background:#fff;color:#0D0D0D;font-size:26px;line-height:1;z-index:2}
.zoom-hint{color:#ddd;font-size:13px;margin-top:10px}
.linkbtn{border:0;background:none;color:var(--blue-ink);padding:6px 0;text-align:left;font-size:15px}
.login-msg a{color:var(--blue-ink)}
@media (max-width:1000px){
.tb,.menu{min-height:44px;min-width:44px}.toc-x{width:44px;height:44px}
.aa-pop{left:8px;right:8px!important;min-width:0}
.buy-btn{padding:0 12px;font-size:13.5px}
.kbd{display:none}
td[data-label]::before{content:attr(data-label) ": ";font-weight:600;color:var(--muted)}
td[data-label=""]::before{content:none}
.hit{padding:8px 10px}.hit span{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.dlg{padding-top:0}.dlg-box{width:100%;max-height:100%;height:100%;border-radius:0}
}
@media (max-width:480px){.buy-btn{display:none!important}}
@media (max-width:1000px){.aa-pop .rd-only{display:none!important}}
@media (max-width:1000px){td:empty{display:none}}
/* ===== волна 3 ===== */
figure img{height:auto}
[data-theme=dark] .flow a,[data-theme=dark] .lib a,[data-theme=dark] .cheat a,[data-theme=dark] .news a{text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px}
.todo-hint{font-size:12.5px;color:var(--muted);margin-top:2px}
.foot{border-top:1px solid var(--line);background:var(--bg);margin-top:40px}
.foot-in{max-width:1120px;margin:0 auto;padding:28px 40px 40px;display:grid;grid-template-columns:1.2fr 1fr 1.6fr;gap:24px;font-size:14px}
.foot-in div{display:flex;flex-direction:column;gap:6px}.foot-in b{font-size:14px}.foot-in span{color:var(--muted)}
.foot-in a{color:var(--ink)}.foot-in a:hover{color:var(--blue-ink)}
.paged.reading .foot{display:none}
@media (max-width:1000px){.foot-in{grid-template-columns:1fr;padding:22px 16px 34px}}
.acct-h{font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--soft);padding:6px 8px 2px}
.acct-pop a small{color:var(--soft);font-size:12.5px;margin-left:6px}
/* знакомство с книгой: подсветка кнопки и подсказка рядом */
.tour{position:fixed;inset:0;z-index:90}
.tour-hole{position:fixed;border-radius:14px;box-shadow:0 0 0 9999px rgba(0,0,0,.5);transition:all .25s ease-out;pointer-events:none}
.tour-tip{position:fixed;width:min(340px,calc(100vw - 32px));background:var(--paper);color:var(--ink);border-radius:16px;padding:16px 18px 14px;box-shadow:0 12px 36px rgba(0,0,0,.25);transition:top .25s ease-out,left .25s ease-out}
.tour-tip b{display:block;font-size:17px;margin:0 0 6px}
.tour-tip p{margin:0;font-size:15px;line-height:1.5}
.tour-bar{display:flex;align-items:center;gap:8px;margin-top:14px}
.tour-n{color:var(--soft);font-size:13px;margin-right:auto}
.tour-bar button{min-height:40px;padding:0 16px;border-radius:999px;border:0;font:inherit;font-size:15px;cursor:pointer}
.tour-skip{background:none;color:var(--soft)}
.tour-next{background:var(--ink);color:var(--bg);font-weight:600}
.tour-again{display:block;width:100%;margin-top:6px;border:0;background:none;text-align:left;padding:9px 8px;border-radius:10px;color:var(--link,var(--ink));font:inherit;font-size:15px;cursor:pointer}
.tour-again:hover{background:var(--surface)}
/* закладки: флажок на полях у отмеченного абзаца, крестик у ярлычка */
.bm-mark{position:relative}
.lenta .bm-mark::before{content:"";position:absolute;left:-22px;top:.25em;width:11px;height:15px;background:var(--blue);clip-path:polygon(0 0,100% 0,100% 100%,50% 74%,0 100%)}
.bm-btn.on svg path{fill:var(--blue);stroke:var(--blue)}
.bm-chip{display:inline-flex;align-items:center;background:var(--paper);border-radius:999px;box-shadow:0 0 0 1px var(--line)}
.bm-list .bm-chip a{box-shadow:none;background:none;padding:4px 4px 4px 12px}
.bm-x{border:0;background:none;color:var(--soft);font-size:18px;line-height:1;width:30px;height:30px;border-radius:50%;cursor:pointer}
.bm-x:hover{color:var(--ink);background:var(--surface)}
body:not(.guest) .guest-block-x{display:none!important}
.paged .leaf.ribbon::after{content:"";position:absolute;top:-6px;right:34px;width:18px;height:46px;background:var(--blue);clip-path:polygon(0 0,100% 0,100% 100%,50% 80%,0 100%);box-shadow:0 2px 4px rgba(0,0,0,.2);z-index:2}
/* длинная карточка, разрезанная между листами: у каждого куска свои скругления и поля, кнопки не отрываются от текста */
.paged .flow .pcard.long,.paged .flow .todo.long,.paged .flow .fact,.paged .flow .tip{-webkit-box-decoration-break:clone;box-decoration-break:clone}
.paged .pcard .pb{orphans:3;widows:3}
.paged .pcard .pacts{break-before:avoid-column;break-inside:avoid-column}
.op-meta{margin-bottom:6px}
/* правило .sec>* (избегать разрыва) сильнее простых классов: длинным блокам разрешаем разрыв явно */
.paged .flow .sec>.todo.long,.paged .flow .sec>.pcard.long,.paged .flow .sec>table.long,.paged .flow table.long{break-inside:auto}
.paged .flow tr{break-inside:avoid-column}
.paged figure.fit img{width:auto;max-width:100%;margin:0 auto}
.paged .flow .sec>.fact.long,.paged .flow .sec>.tip.long,.paged .flow .fact.long,.paged .flow .tip.long{break-inside:auto}
.paged .opener.tight .op-bunny{display:none}
.paged .opener.tighter h1{font-size:1.8em}.paged .opener.tighter .composer,.paged .opener.tighter .op-note{display:none}
.lenta .opener{margin-bottom:28px}
.paged .flow .keep{break-inside:avoid-column!important}
.paged .flow .todo.loose li{break-inside:auto}
/* длинные ссылки и слова в промптах и тексте переносятся, а не растягивают страницу на телефоне */
.flow p,.flow li,.pcard .pb,.fact,.tip,.todo,td{overflow-wrap:anywhere}
.opener h1,.flow h2,.flow h3{overflow-wrap:break-word}
/* iPhone в энергосбережении не запускает видео сам и рисует кнопку «плей» поверх зайчика: прячем её, остаётся кадр */
video.live::-webkit-media-controls,video.live::-webkit-media-controls-start-playback-button,video.live::-webkit-media-controls-overlay-play-button{display:none!important;-webkit-appearance:none}
video.live{pointer-events:none}
.more-link{font-weight:600;font-size:15px;color:var(--blue-ink);margin:-6px 0 14px;align-items:center}
/* отзыв о главе */
.fb{margin:1.8em 0 0;padding:18px 20px;border:1px solid var(--line);border-radius:var(--r-l)}
.fb-q{margin:.3em 0 .7em;font-weight:600}
.fb-votes{display:flex;gap:10px;flex-wrap:wrap}
.fb-v{font:inherit;padding:9px 16px;border-radius:999px;border:1px solid var(--line);background:var(--bg);color:var(--ink);cursor:pointer}
.fb-v:hover{background:var(--surface)}.fb-v.on{background:var(--blue-soft);border-color:var(--blue);color:var(--blue-ink)}
.fb-more{margin-top:14px}.fb-l{display:block;font-size:.92em;margin-bottom:6px}
.fb-t{width:100%;box-sizing:border-box;font:inherit;font-size:.95em;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--bg);color:var(--ink);resize:vertical}
.fb-send{margin-top:10px}.fb-done{margin:.8em 0 0;color:var(--green)}
.fbs-t{width:100%;border-collapse:collapse;font-size:.93em}.fbs-t th,.fbs-t td{padding:7px 8px;border-bottom:1px solid var(--line);text-align:left}
.fbs-t td:not(:first-child),.fbs-t th:not(:first-child){text-align:center;white-space:nowrap}
.fbs-t tr.weak .pct{color:#D14343;font-weight:700}
.fbs-c{padding:12px 0;border-bottom:1px solid var(--line)}.fbs-m{font-size:.85em;color:var(--muted)}.fbs-c p{margin:.3em 0 0;white-space:pre-wrap}