/* Курс «Переход на разработку с ИИ» — стили. Значения из прототипа блока 1 (ТЗ, раздел 9). */

/* ---- fonts (self-hosted, cyrillic + latin) ---- */
@font-face{font-family:"Manrope";font-style:normal;font-weight:700;font-display:swap;src:url(fonts/manrope-cyrillic-700-normal.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"Manrope";font-style:normal;font-weight:700;font-display:swap;src:url(fonts/manrope-latin-700-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Manrope";font-style:normal;font-weight:800;font-display:swap;src:url(fonts/manrope-cyrillic-800-normal.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"Manrope";font-style:normal;font-weight:800;font-display:swap;src:url(fonts/manrope-latin-800-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/ibm-plex-sans-cyrillic-400-normal.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/ibm-plex-sans-latin-400-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:500;font-display:swap;src:url(fonts/ibm-plex-sans-cyrillic-500-normal.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:500;font-display:swap;src:url(fonts/ibm-plex-sans-latin-500-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:600;font-display:swap;src:url(fonts/ibm-plex-sans-cyrillic-600-normal.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:600;font-display:swap;src:url(fonts/ibm-plex-sans-latin-600-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/ibm-plex-mono-cyrillic-400-normal.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/ibm-plex-mono-latin-400-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:500;font-display:swap;src:url(fonts/ibm-plex-mono-cyrillic-500-normal.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:500;font-display:swap;src:url(fonts/ibm-plex-mono-latin-500-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

:root{
  --paper:#FFFFFF; --surface:#F6F7F8; --white:#FFFFFF;
  --ink:#17191C; --ink-2:#4A4F57; --ink-3:#8A9099; --ink-3t:#6B717A;
  --line-soft:#E1E4E8; --blue:#2F5FD9; --blue-soft:#EAF0FF; --green:#1F8A5B; --amber:#C2721B; --amber-t:#A35F12;
  --r-btn:10px; --r-card:14px; --r-bubble:12px; --r-field:8px;
  --display:"Manrope","IBM Plex Sans",system-ui,sans-serif; --sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif; --mono:"IBM Plex Mono","SFMono-Regular",Menlo,monospace;
}
*{box-sizing:border-box}
html{color-scheme:light;scroll-padding-top:calc(4.5rem + env(safe-area-inset-top,0px));scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;color:var(--ink);font-family:var(--sans);font-size:19px;line-height:1.6;background-color:var(--paper);transition:background-color .8s ease;
  padding-bottom:env(safe-area-inset-bottom,0px);overflow-x:hidden}
body.tone-quarter{background-color:var(--surface)}
[hidden]{display:none!important}

/* ---- top bar ---- */
.topbar{position:sticky;top:0;z-index:20;background:var(--paper);border-bottom:1.5px solid var(--line-soft);padding-top:env(safe-area-inset-top,0px)}
.topbar .in{display:flex;align-items:center;gap:1.5rem;padding:.9rem max(1.5rem,env(safe-area-inset-left,0px));font-size:.95rem}
.topbar a{color:var(--ink-3t);text-decoration:none}
.topbar a:hover{color:var(--ink)}
.topbar .back{font-family:var(--mono);font-size:.85rem;color:var(--blue);display:inline-flex;gap:.4rem;align-items:center;white-space:nowrap}
.topbar .brand{font-family:var(--mono);font-size:.9rem;color:var(--ink);font-weight:500}
.topbar .brand span{color:var(--ink-3t);font-weight:400}
.topbar .sp{flex:1}
.topbar .pill{padding:.3rem 0;color:var(--ink-2)}
.topbar .prog{font-family:var(--mono);font-size:.85rem;color:var(--ink-3t);background:var(--surface);padding:.35rem .7rem;border-radius:8px}
.topbar .prog b{color:var(--ink);font-weight:500}
@media (max-width:48rem){.topbar .in{gap:.75rem;padding:.7rem 1rem;font-size:.8rem;flex-wrap:wrap}.topbar .hide-m{display:none}}

/* ---- left rail ---- */
.rail{position:fixed;left:1.4rem;top:50%;transform:translateY(-50%);z-index:10;list-style:none;margin:0;padding:0;display:flex;flex-direction:column;font-family:var(--mono);font-size:.75rem}
.rail li{position:relative;width:36px;height:36px;border-radius:50%;border:1.5px solid var(--line-soft);background:var(--paper);color:var(--ink-3t);display:grid;place-items:center;margin-bottom:1.7rem}
.rail li::after{content:"";position:absolute;left:50%;top:100%;width:1.5px;height:1.7rem;background:var(--line-soft)}
.rail li:last-child::after{display:none}
.rail li.past{border-color:var(--blue);color:var(--blue);cursor:pointer}
.rail li.past:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.rail li.now{background:var(--blue);border-color:var(--blue);color:#fff;font-weight:500;transform:scale(1.12)}
@media (max-width:64rem){.rail{display:none!important}}

main{max-width:46rem;margin:0 auto;padding:3rem 1.5rem 9rem}
@media (max-width:40rem){main{padding:2rem 1rem 6rem}}

/* ---- type ---- */
h1,h2{font-family:var(--display);font-weight:800;line-height:1.08;letter-spacing:-.02em;margin:0 0 1rem}
h1{font-size:clamp(2rem,5.2vw,3.4rem)}
h1 span{color:var(--ink-3)}
h2{font-size:clamp(1.5rem,3.2vw,2.1rem);font-weight:700}
h2.sub{font-size:1.4rem;margin-top:2.5rem}
h3{font-family:var(--display);font-weight:700;font-size:1.15rem;margin:0 0 .5rem}
h4{font-family:var(--display);font-weight:700;font-size:1rem;margin:1.2rem 0 .4rem}
p{margin:0 0 1.1rem}
a{color:var(--ink);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;text-decoration-color:var(--ink-3)}
a:hover{color:var(--blue);text-decoration-color:currentColor}
code{font-family:var(--mono);font-size:.85em;background:var(--surface);padding:.05em .3em;border-radius:4px}
pre{font-family:var(--mono);font-size:.8rem;line-height:1.55;background:var(--surface);border:1.5px solid var(--line-soft);border-radius:var(--r-bubble);padding:1rem 1.1rem;overflow-x:auto;white-space:pre-wrap;overflow-wrap:anywhere;margin:0 0 1.2rem}
pre.cols{white-space:pre;overflow-wrap:normal}
pre code{background:none;padding:0;font-size:inherit}
ul,ol{padding-left:1.4rem;margin:0 0 1.1rem}
li{margin:.3rem 0}
li>p{margin:.4rem 0}
.mono{font-family:var(--mono);font-size:.82rem;letter-spacing:.06em;color:var(--blue)}
.mono.muted{color:var(--ink-3t)}
.kicker{margin-bottom:1.5rem}
.kicker::before{content:"";display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--blue);margin-right:.7rem;vertical-align:middle}
.lead{font-size:1.15rem;color:var(--ink-2)}
.rule{height:1.5px;background:var(--line-soft);margin:1.5rem 0}
.note{font-size:.88rem;color:var(--ink-3t)}
.question{font-weight:600;font-size:1.15rem}
.warn{border:1.5px solid var(--amber);color:var(--amber-t);border-radius:var(--r-bubble);padding:.8rem 1rem;font-size:.92rem;margin-bottom:1.5rem}

/* ---- step progress ---- */
.stepline{display:flex;gap:.6rem;margin:.6rem 0 2rem}
.stepline i{flex:1;height:3px;background:var(--line-soft)}
.stepline i.on{background:var(--blue)}
.stepline i.past{cursor:pointer}

/* ---- motion ---- */
html.anim .rv{opacity:0}
html.anim .rv.in{opacity:1}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}

/* ---- stages (без JS видны все шаги подряд) ---- */
html.js section.stage{display:none}
html.js section.stage.open{display:block}
html.no-js .js-only{display:none}
html.no-js section.stage+section.stage{border-top:1.5px solid var(--line-soft);padding-top:2.5rem;margin-top:3rem}
html.no-js .start,html.no-js .next,html.no-js [data-clear],html.no-js [data-unlock]{display:none}

/* ---- cover ---- */
.cover{min-height:68vh;display:flex;flex-direction:column;justify-content:center}
.cover.home{min-height:0}
.quote{display:grid;grid-template-columns:1fr auto;gap:2rem;align-items:center;margin:1.5rem 0 2rem}
.quote.solo{grid-template-columns:auto}
@media (max-width:40rem){.quote{grid-template-columns:1fr}}
.quote .q{border-left:4px solid var(--blue);padding-left:1.25rem;font-weight:600;font-size:1.3rem;line-height:1.35}
.author{display:flex;align-items:center;gap:.9rem}
.author .ph{width:64px;height:64px;flex:none;border-radius:50%;border:1.5px solid var(--line-soft);background:var(--white);display:grid;place-items:center;font-family:var(--display);font-weight:700;font-size:.9rem}
.author b{display:block;font-weight:600;font-size:1.05rem}
.author .note,.author .mono{display:block;margin:.15rem 0}
.path{display:flex;gap:.5rem;flex-wrap:wrap;align-items:center;margin:1.75rem 0 2.25rem}
.path span{font-size:.85rem;border:1.5px solid var(--line-soft);background:var(--surface);padding:.4rem .8rem;border-radius:999px}
.path i{color:var(--ink-3t);font-style:normal}
.asof{margin-top:2rem}
.locked{border-left:4px solid var(--amber);padding:.3rem 0 .3rem 1rem;font-size:.95rem;color:var(--ink-2)}

/* ---- buttons ---- */
.btn{font-family:var(--sans);font-size:1rem;font-weight:600;padding:.95rem 1.5rem;border:1.5px solid var(--ink);background:var(--ink);color:#fff;cursor:pointer;text-decoration:none;display:inline-block;border-radius:var(--r-btn);line-height:1.3}
.btn::after{content:" →"}
.btn.quiet{background:transparent;color:var(--ink);border-color:var(--line-soft)}
.btn.quiet::after{content:""}
.btn:hover{background:var(--blue);color:#fff;border-color:var(--blue)}
.btn:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.btn:disabled{opacity:.5;cursor:default}
.next{margin-top:2.5rem;display:flex;gap:.75rem;flex-wrap:wrap;justify-content:space-between}
.start{display:flex;gap:.75rem;flex-wrap:wrap;align-items:center}

/* ---- scene ---- */
.scene{display:grid;grid-template-columns:5rem 1fr;gap:1.25rem;align-items:start;margin:1.5rem 0 2rem}
@media (max-width:40rem){.scene{grid-template-columns:4rem 1fr;gap:.9rem}}
.avatar{width:100%;aspect-ratio:1;border-radius:50%;overflow:hidden;background:var(--surface);border:1.5px solid var(--line-soft)}
.avatar svg{width:100%;height:100%;display:block}
.bubble{position:relative;background:var(--surface);border:1.5px solid var(--line-soft);padding:1.1rem 1.25rem;border-radius:var(--r-bubble)}
.bubble::before{content:"";position:absolute;left:-9px;top:1.5rem;width:14px;height:14px;background:var(--surface);border-left:1.5px solid var(--line-soft);border-bottom:1.5px solid var(--line-soft);transform:rotate(45deg)}
.bubble .who{margin-bottom:.5rem;font-family:var(--sans)}
.bubble p:last-child{margin-bottom:0}
.facts{border-left:1.5px solid var(--line-soft);padding-left:1.25rem;margin:1.5rem 0 2rem;color:var(--ink-2)}
.facts div{padding:.25rem 0}
.facts div::before{content:"—";font-family:var(--mono);color:var(--ink-3);margin-right:.6rem}

/* ---- choices ---- */
.choices{display:grid;gap:.75rem;margin:1.25rem 0}
.choice{display:grid;grid-template-columns:2.2rem 1fr;gap:.6rem;align-items:start;width:100%;text-align:left;background:var(--white);border:1.5px solid var(--line-soft);border-radius:var(--r-bubble);padding:1rem 1.1rem;font:inherit;color:inherit;cursor:pointer}
.choice .l{font-family:var(--mono);font-size:.8rem;color:var(--blue);padding-top:.35rem}
.choice:hover{border-color:var(--blue)}
.choice:focus-visible{border-color:var(--blue);outline:2px solid var(--blue);outline-offset:2px}
.choice b{display:block;margin-bottom:.2rem;font-weight:600}
.choice.picked{border-color:var(--blue);background:var(--blue-soft)}
.choice.dim{opacity:.45}
html.no-js .choice{cursor:default}

/* ---- card ---- */
.card{background:var(--white);border:1.5px solid var(--line-soft);border-radius:var(--r-card);margin:1.5rem 0 1.75rem;overflow:hidden}
.card .hz{height:5px;background:var(--blue)}
.card .in{padding:1.25rem 1.4rem 1.1rem}
.card .ctitle{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;margin-bottom:.75rem}
.card .ctitle h3{margin:0}
.cal{display:flex;gap:.75rem;align-items:center;margin:0 0 1rem;font-size:.85rem;color:var(--ink-3t)}
.cal b{font-family:var(--display);font-weight:800;font-size:1.25rem;color:var(--ink)}
.cal .week{display:inline-flex;gap:3px}
.cal .week i{width:7px;height:16px;background:var(--line-soft);display:inline-block;border-radius:2px}
.cal .week i.on{background:var(--blue)}
.metric{display:grid;grid-template-columns:1fr auto auto;gap:.4rem 1.25rem;align-items:center;padding:.8rem 0;border-top:1px solid var(--line-soft)}
.metric .name{font-size:.98rem;font-weight:500}
.metric .name small{display:block;color:var(--ink-3t);font-size:.8rem;font-weight:400}
.metric .was{color:var(--ink-3t);font-family:var(--mono);font-size:.9rem}
.metric .now{font-family:var(--display);font-weight:800;font-size:1.05rem;text-align:right;min-width:5.5rem}
.metric .now.bad{color:var(--amber-t)}
.metric .now.good{color:var(--green)}
.metric .bar{grid-column:1/-1;height:8px;background:var(--line-soft);position:relative;overflow:hidden;border-radius:4px}
.metric .bar::after{content:"";position:absolute;left:50%;top:0;bottom:0;width:1.5px;background:var(--ink-3)}
.metric .bar i{position:absolute;left:50%;top:0;bottom:0;background:var(--ink-3);width:0}
.metric .bar i.good{background:var(--green)}
.metric .bar i.bad{background:var(--amber);left:auto;right:50%}
/* на узком экране «было» уходит отдельной строкой под название: в одну строку со «стало» длинные значения не помещаются */
@media (max-width:40rem){.metric{grid-template-columns:1fr auto}.metric .name{grid-area:1/1}.metric .now{grid-area:1/2}
  .metric .was{grid-column:1/-1;font-size:.8rem}.metric .was::before{content:"было "}.metric .was:empty{display:none}.card .ctitle .mono{white-space:nowrap}}
.verdict{border-left:4px solid var(--amber);padding:.4rem 0 .4rem 1.25rem;margin:1.5rem 0;font-weight:600;font-size:1.15rem;line-height:1.4}
.verdict.ok{border-left-color:var(--green)}

/* ---- review ---- */
.legend{display:flex;gap:.5rem;flex-wrap:wrap;margin:.5rem 0 1.5rem}
.tag{font-size:.78rem;font-weight:500;padding:.25rem .65rem;border-radius:999px;border:1.5px solid;white-space:nowrap}
.tag.yes{border-color:var(--green);color:var(--green)}
.tag.part{border-color:var(--amber);color:var(--amber-t)}
.tag.no{border-color:var(--ink-3);color:var(--ink-3t)}
.reasons{margin:1rem 0}
.reason{border-top:1.5px solid var(--line-soft);padding:1.1rem 0}
.reason:last-of-type{border-bottom:1.5px solid var(--line-soft)}
.reason summary{cursor:pointer;display:grid;grid-template-columns:1fr auto;gap:.75rem;align-items:center;list-style:none;font-weight:600;font-size:1.08rem}
.reason summary::-webkit-details-marker{display:none}
.reason summary:focus-visible{outline:2px solid var(--blue);outline-offset:4px}
.reason summary .n{font-family:var(--mono);font-size:.82rem;color:var(--blue);display:inline-block;min-width:2.6rem}
.reason.hit summary{box-shadow:inset 4px 0 0 var(--blue);padding-left:.9rem;margin-left:-.9rem}
.reason .body{margin:.9rem 0 .3rem;padding-left:2.6rem}
@media (max-width:40rem){.reason .body{padding-left:0}.reason summary{grid-template-columns:1fr}.reason summary .tag{justify-self:start}}
html.no-js .reason .body{display:block}
.open-sec{margin:2rem 0}
.tablewrap{overflow-x:auto;margin:1rem 0 1.5rem;border:1.5px solid var(--line-soft);border-radius:var(--r-bubble);background:var(--white);-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;font-size:.88rem;min-width:46rem;width:100%}
th,td{text-align:left;vertical-align:top;padding:.65rem .8rem;border-top:1px solid var(--line-soft)}
th{border-top:0;font-size:.8rem;color:var(--ink-3t);font-weight:500;background:var(--surface)}
td:first-child{white-space:nowrap;font-family:var(--mono);font-size:.8rem}
.sum{border:1.5px solid var(--line-soft);background:var(--surface);border-radius:var(--r-card);padding:1.4rem 1.6rem;margin:1.75rem 0}
.sum .mono{margin-bottom:.5rem}
.sum p:last-child{margin-bottom:0}
.folder-wrap{margin:1.5rem 0 2rem}

/* ---- scrollytelling ---- */
.story{position:relative;margin:2.5rem 0 1rem}
.story .pin{position:sticky;top:calc(4.2rem + env(safe-area-inset-top,0px));background:var(--white);border:1.5px solid var(--line-soft);border-radius:var(--r-card);padding:1.1rem 1.4rem 1rem;z-index:2;box-shadow:0 6px 24px rgba(23,25,28,.06)}
.story .pin .yr{font-family:var(--display);font-size:2.2rem;font-weight:800;line-height:1;margin:.25rem 0 .9rem;color:var(--blue)}
.chart{display:grid;gap:.7rem}
.cbar{display:grid;grid-template-columns:11rem 1fr 4.5rem;gap:.8rem;align-items:center;font-size:.92rem}
@media (max-width:40rem){.cbar{grid-template-columns:7rem 1fr 3.5rem;font-size:.8rem}}
.cbar .track{height:14px;background:var(--line-soft);position:relative;overflow:hidden;border-radius:7px}
.cbar .track::after{content:"";position:absolute;left:50%;top:0;bottom:0;width:1.5px;background:var(--ink-3)}
.cbar .fill{position:absolute;top:0;bottom:0;width:0}
.cbar .fill.pos{left:50%;background:var(--green)}
.cbar .fill.neg{right:50%;background:var(--amber)}
.story.inv .cbar .fill.pos{background:var(--amber)}
.story.inv .cbar .fill.neg{background:var(--green)}
.cbar .val{text-align:right;font-family:var(--mono);font-size:.85rem;font-weight:500}
.story .steps{padding:1rem 0 0}
.story .step{min-height:55vh;display:flex;align-items:center}
.story .step p{padding:.5rem 0;margin:0}
.story .step.last{min-height:30vh}
html.no-js .story .step,html.no-js .story .step.last{min-height:0}
html.no-js .story .pin{position:static}

/* ---- voices ---- */
.voice{display:grid;grid-template-columns:4.5rem 1fr;gap:1.1rem;margin:1.6rem 0;align-items:start}
@media (max-width:40rem){.voice{grid-template-columns:3.6rem 1fr;gap:.75rem}}
.voice .bubble .who{display:flex;flex-direction:column;gap:.1rem}
.voice .bubble .who b{font-weight:600;font-size:1rem}
.exchange{margin-top:2.25rem;padding-top:1.5rem;border-top:1.5px solid var(--line-soft)}
.exchange .line{margin:.6rem 0;padding-left:1.1rem;border-left:3px solid var(--ink)}
.exchange .line.p{border-left-color:var(--blue)}
.exchange .line b{font-weight:600}
.typing{display:inline-flex;gap:4px;align-items:center;height:1.2em}
.typing i{width:6px;height:6px;border-radius:50%;background:var(--ink-3);display:inline-block;opacity:.4;animation:dot 1s infinite}
.typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}
@keyframes dot{0%,100%{opacity:.3;transform:translateY(0)}50%{opacity:1;transform:translateY(-3px)}}
.caret{display:inline-block;width:2px;height:1em;background:var(--ink);vertical-align:-2px;margin-left:1px;animation:blink .9s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* ---- artifact form ---- */
.row{display:grid;grid-template-columns:1fr 1fr;gap:.8rem;margin-bottom:.8rem}
.row.one{grid-template-columns:1fr}
@media (max-width:40rem){.row{grid-template-columns:1fr}}
label,legend{font-size:.82rem;color:var(--ink-3t);display:block;margin-bottom:.35rem}
select,input[type=text],input[type=number],textarea{width:100%;font:inherit;font-size:.95rem;color:var(--ink);background:var(--white);border:1.5px solid var(--line-soft);padding:.65rem .75rem;border-radius:var(--r-field)}
select:focus,input:focus,textarea:focus{outline:none;border-color:var(--blue)}
.checklist{border:0;padding:0;margin:0 0 .8rem}
.chk{display:flex;gap:.6rem;align-items:baseline;font-size:.95rem;color:var(--ink);margin:.35rem 0}
.actions{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:1.25rem;align-items:center}
.saved{font-size:.85rem;color:var(--green)}
.preview{font-family:var(--mono);font-size:.82rem;background:var(--paper);border:1.5px dashed var(--line-soft);padding:1rem;margin-top:1rem;white-space:pre-wrap;display:none;border-radius:var(--r-field)}
.preview.on{display:block}

/* ---- done ---- */
.done{border:1.5px solid var(--line-soft);background:var(--surface);border-radius:var(--r-card);padding:1.75rem;margin:1rem 0 2rem}
.done .big{font-family:var(--display);font-size:1.6rem;font-weight:800;margin-bottom:.75rem}
.sources{font-size:.92rem;line-height:1.55}
.sources li{margin:.35rem 0}
.foot{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-top:3rem;padding-top:1.25rem;border-top:1.5px solid var(--line-soft)}
.foot .mono{letter-spacing:.02em}

/* ---- home ---- */
.cards{display:grid;grid-template-columns:1fr;gap:.9rem;margin:0 0 2rem}
.mini ul{list-style:none;margin:.5rem 0 0;padding:0;font-size:.95rem;color:var(--ink-2)}
.mini li{margin:0 0 .35rem;overflow-wrap:anywhere}
.mini{border:1.5px solid var(--line-soft);border-radius:var(--r-card);padding:1.1rem 1.25rem;background:var(--surface)}
.mini p{margin:.5rem 0 0;font-size:.95rem;color:var(--ink-2)}
#blocks,#faq{margin-top:3.5rem}
.blist{list-style:none;padding:0;margin:1rem 0;border-top:1.5px solid var(--line-soft)}
.blist li{margin:0;border-bottom:1.5px solid var(--line-soft)}
.blist a{display:grid;grid-template-columns:2.8rem 1fr auto;gap:.9rem;align-items:baseline;padding:1rem .2rem;color:inherit;text-decoration:none}
.blist a:hover b{color:var(--blue)}
.blist a:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.blist .num{font-family:var(--mono);font-size:.85rem;color:var(--blue)}
.blist b{display:block;font-weight:600}
.blist small{display:block;color:var(--ink-3t);font-size:.88rem;line-height:1.45;margin-top:.2rem}
.blist .m{font-family:var(--mono);font-size:.8rem;color:var(--ink-3t);text-align:right;white-space:nowrap}
.blist .st{display:block;font-style:normal;margin-top:.2rem}
.blist li.is-done .st{color:var(--green)}
.blist li.is-current .st{color:var(--blue)}
.blist li.is-locked a{color:var(--ink-3t)}
.blist li.is-locked .num{color:var(--ink-3t)}
.faq details{border-top:1.5px solid var(--line-soft);padding:.9rem 0}
.faq details:last-child{border-bottom:1.5px solid var(--line-soft)}
.faq summary{cursor:pointer;font-weight:600}
.faq summary:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.faq p{margin:.6rem 0 0;color:var(--ink-2)}

/* ---- folder ---- */
.fitem{border:1.5px solid var(--line-soft);border-radius:var(--r-card);padding:1.1rem 1.25rem;margin:.75rem 0;background:var(--white)}
.fitem.empty{background:var(--surface);color:var(--ink-3t)}
.fitem .fh{display:flex;justify-content:space-between;gap:1rem;align-items:baseline;flex-wrap:wrap}
.fitem .fh b{font-weight:600}
.fitem .fh .mono{font-size:.78rem}
.fitem .preview{display:block;margin:.75rem 0 .5rem}
.fitem .acts{display:flex;gap:1rem;flex-wrap:wrap;font-size:.9rem}
.fitem .acts button{font:inherit;color:var(--blue);background:none;border:0;padding:0;cursor:pointer;text-decoration:underline}
.folder-top{display:flex;gap:.75rem;flex-wrap:wrap;align-items:center;margin:1rem 0 1.5rem}

/* ---- нижняя панель «Назад / Далее», прилеплена к экрану ---- */
.next.dock{position:sticky;bottom:0;z-index:15;display:flex;align-items:center;gap:.75rem;margin:2.5rem -1.5rem 0;padding:1.4rem 1.5rem calc(1rem + env(safe-area-inset-bottom,0px));
  background:linear-gradient(to bottom,rgba(255,255,255,0),var(--paper) 1.2rem)}
body.tone-quarter .next.dock{background:linear-gradient(to bottom,rgba(246,247,248,0),var(--surface) 1.2rem)}
.next.dock .sp{flex:1}
.next.dock .btn{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
.next.dock .back::before{content:"← "}
.next.dock .back::after{content:""}
.next.dock .hint{margin:0}
@media (max-width:40rem){.next.dock{margin:2rem -1rem 0;padding:1.2rem 1rem calc(.8rem + env(safe-area-inset-bottom,0px));gap:.5rem}.next.dock .btn{padding:.85rem 1rem;font-size:.95rem}#sec-next{max-width:70vw}}
main{padding-bottom:2rem}
.cover{min-height:calc(100vh - 8rem)}

/* ---- чат ---- */
.thread{display:flex;flex-direction:column;gap:.6rem;margin:1rem 0}
.thread .msgs{display:flex;flex-direction:column;gap:.6rem}
.msg{position:relative;max-width:100%}
.msg.a{align-self:stretch;background:var(--surface);border:1.5px solid var(--line-soft);border-radius:4px var(--r-bubble) var(--r-bubble) var(--r-bubble);padding:.8rem 1.1rem;margin-left:3rem}
.msg.a.first{margin-top:.4rem}
.msg.a>:last-child{margin-bottom:0}
.msg.a p,.msg.a li{font-size:1.02rem}
.msg.a ul,.msg.a ol{margin-bottom:.4rem}
.msg .me{position:absolute;left:-3rem;top:0;width:2.3rem;height:2.3rem;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;font-family:var(--display);font-weight:700;font-size:.72rem}
.msg.u{align-self:flex-end;background:var(--blue);color:#fff;border-radius:var(--r-bubble) 4px var(--r-bubble) var(--r-bubble);padding:.7rem 1.1rem;max-width:85%;margin-left:3rem}
.msg.u p{margin:0}
.msg.wide{margin-left:3rem}
.msg.wide .tablewrap,.msg.wide pre{margin:0}
.thread .wait{display:none!important}
.typing-msg{padding:.7rem 1rem}
@media (max-width:40rem){.msg.a,.msg.wide{margin-left:0}.msg .me{display:none}.msg.u{margin-left:2rem}}
.chapter{margin-top:1.8rem}
.chap-h{display:flex;flex-wrap:wrap;gap:.4rem .7rem;align-items:baseline;font-family:var(--display);font-weight:700;font-size:1.15rem;margin:0 0 .4rem;padding-left:3rem}
.chap-h .n{font-family:var(--mono);font-size:.82rem;color:var(--blue);font-weight:500}
.chapter.hit .chap-h{box-shadow:inset 4px 0 0 var(--blue);padding-left:calc(3rem - .9rem + 4px);margin-left:.9rem}
@media (max-width:40rem){.chap-h{padding-left:0}.chapter.hit .chap-h{padding-left:.8rem;margin-left:0}}
.chapter .story{margin-left:3rem}
@media (max-width:40rem){.chapter .story{margin-left:0}}
.ask{display:flex;flex-direction:column;gap:.6rem;margin-top:.6rem}
.ask .replies{display:flex;flex-wrap:wrap;gap:.5rem;margin-left:3rem}
.chip{font:inherit;font-size:.92rem;font-weight:500;padding:.5rem .95rem;border-radius:999px;border:1.5px solid var(--blue);background:var(--white);color:var(--blue);cursor:pointer}
.chip:hover,.chip:focus-visible{background:var(--blue);color:#fff;outline:none}
.ask-form{display:flex;gap:.5rem;margin-left:3rem}
.ask-form input{flex:1}
.ask-form .btn{padding:.6rem 1rem;font-size:.92rem}
.ask.answered .replies,.ask.answered .ask-form{display:none}
.ask .ans{display:flex;flex-direction:column;gap:.6rem}
@media (max-width:40rem){.ask .replies,.ask-form{margin-left:0}}
html.no-js .ask .replies,html.no-js .ask-form{display:none}
.sum.after-all{margin-top:2rem}
.thread .folder-wrap{background:var(--white);border:1.5px solid var(--line-soft);border-radius:var(--r-card);padding:1.1rem 1.25rem}
.next.dock{flex-wrap:nowrap}
.next.dock>.btn,.next.dock>a.btn{flex:0 1 auto;min-width:0}
.next.dock .back{flex:none}
@media (max-width:40rem){
  .next.dock .back{font-size:0;padding:.85rem 1.05rem}
  .next.dock .back::before{content:"←";font-size:1.05rem}
  #sec-next{max-width:none}
}

/* скроллителлинг внутри чата: короче шаги, абзацы — пузырями */
.story{margin:1rem 0 1.5rem}
.story .steps{padding:.5rem 0 0}
.story .step{min-height:32vh;align-items:flex-end;padding-bottom:1rem}
.story .step.last{min-height:0;padding-bottom:0}
.story .step p{background:var(--surface);border:1.5px solid var(--line-soft);border-radius:4px var(--r-bubble) var(--r-bubble) var(--r-bubble);padding:.8rem 1.1rem;font-size:1.02rem}

/* портреты персонажей */
.avatar img,.msg .me img,.author .ph img{width:100%;height:100%;object-fit:cover;display:block;border-radius:50%}
.msg .me{overflow:hidden}
.msg .me:has(img){background:var(--surface)}
.author .ph{overflow:hidden}

/* печать без скачков: место под реплику занято сразу */
.typing-box{position:relative}
.typing-box .ghost{color:transparent}
.typing-box>.typing{position:absolute;left:0;top:.35em}
.typing-box .caret{margin-right:-3px}

/* обложка блока: номер в заголовке, описание, оглавление */
h1 .bn{color:var(--blue)}
.cover .lead p{margin:0 0 .8rem}
.cover .lead p:last-child{margin-bottom:0}
.toc{border:1.5px solid var(--line-soft);border-radius:var(--r-card);padding:1.1rem 1.25rem .6rem;margin:1.5rem 0 0;background:var(--surface)}
.toc .mono{margin-bottom:.5rem}
.toc ol{list-style:none;margin:0;padding:0}
.toc li{margin:0;border-top:1px solid var(--line-soft)}
.toc li:first-child{border-top:0}
.toc a{display:grid;grid-template-columns:2.2rem 1fr;gap:.5rem;padding:.55rem 0;color:var(--ink);text-decoration:none;font-size:.98rem;line-height:1.4}
.toc a:hover span:last-child{color:var(--blue)}
.toc a:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.toc .n{font-family:var(--mono);font-size:.8rem;color:var(--blue);padding-top:.15rem}
.cover .path{margin-top:1.5rem}

/* подвал: одинаковый на всех страницах курса */
.foot{display:block;margin:0;padding:0;border-top:1.5px solid var(--line-soft);background:var(--surface)}
.foot .in{max-width:46rem;margin:0 auto;padding:1.75rem 1.5rem calc(2rem + env(safe-area-inset-bottom,0px));display:grid;gap:1rem;font-size:.92rem}
.foot .who b{font-weight:600}
.foot .links{list-style:none;margin:0;padding:0;display:grid;gap:.45rem}
.foot .links li{display:grid;grid-template-columns:15rem 1fr;gap:.75rem;margin:0;align-items:baseline}
.foot .links .mono{font-size:.75rem;letter-spacing:.04em}
.foot .legal{font-size:.75rem;letter-spacing:.04em}
@media (max-width:40rem){.foot .in{padding:1.5rem 1rem calc(1.5rem + env(safe-area-inset-bottom,0px))}.foot .links li{grid-template-columns:1fr;gap:.1rem}}

/* фон везде белый */
body.tone-quarter{background-color:var(--paper)}
.foot{background:var(--paper)}
.topbar .back,.topbar .brand,.topbar .pill,.topbar .prog{line-height:24px}

/* очередь появления: место занято, элемент не виден */
.later{visibility:hidden}
/* название блока в шапке не ломает строку */
.topbar .brand{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar .in{flex-wrap:nowrap}
@media (max-width:48rem){.topbar .in{flex-wrap:nowrap}.topbar .back .hl{display:none}}

/* легенда ярлыков: пояснение, а не кнопки */
.legend{display:block;margin:.25rem 0 1.5rem}
.legend .note{margin:0 0 .5rem}
.legend ul{list-style:none;margin:0;padding:0;display:grid;gap:.4rem}
.legend li{display:grid;grid-template-columns:8.5rem 1fr;gap:.75rem;align-items:baseline;margin:0;font-size:.92rem;color:var(--ink-2)}
.legend .tag{justify-self:start}
@media (max-width:40rem){.legend li{grid-template-columns:1fr;gap:.2rem}}

/* ---- выноски «Корпорация / Небольшая компания» ---- */
.msg.callout,.ex-body .callout{background:var(--white);border:1.5px solid var(--line-soft);border-left:4px solid var(--blue);border-radius:4px var(--r-bubble) var(--r-bubble) 4px;padding:.7rem 1.1rem}
.msg.callout.small,.ex-body .callout.small{border-left-color:var(--ink-3)}
.callout .lbl{display:block;font-family:var(--mono);font-size:.75rem;letter-spacing:.04em;color:var(--blue);margin-bottom:.25rem}
.callout.small .lbl{color:var(--ink-3t)}
.callout>p{margin:0;font-size:1.02rem}
.ex-body .callout{margin:.6rem 0}
/* переключатель масштаба */
/* ---- карточки «Пример» ---- */
details.example{background:var(--surface);border:1.5px solid var(--line-soft);border-radius:var(--r-card);padding:0;overflow:hidden}
details.example>summary{cursor:pointer;list-style:none;display:flex;gap:.7rem;align-items:baseline;padding:.8rem 1.1rem;font-weight:600}
details.example>summary::-webkit-details-marker{display:none}
details.example>summary::after{content:"+";margin-left:auto;font-family:var(--mono);color:var(--ink-3t)}
details.example[open]>summary::after{content:"−"}
details.example>summary:focus-visible{outline:2px solid var(--blue);outline-offset:-2px}
details.example .ex-body{padding:0 1.1rem 1rem}
details.example .ex-body>:last-child{margin-bottom:0}
details.example .ex-body p,details.example .ex-body li{font-size:1rem}
details.example .tablewrap,details.example pre{background:var(--white)}
.art-example{margin:1.5rem 0}
.art-example .msg.wide{margin-left:0}
.ex-actions{margin-top:.9rem;padding-top:.9rem;border-top:1px solid var(--line-soft)}
.ex-actions .btn{padding:.6rem 1rem;font-size:.92rem}

/* ---- калькуляторы ---- */
.calc .calc-in{display:grid;grid-template-columns:1fr 1fr;gap:.7rem .9rem;margin:1rem 0}
@media (max-width:40rem){.calc .calc-in{grid-template-columns:1fr}}
.calc .calc-in label{margin:0;display:flex;flex-direction:column;justify-content:flex-end;gap:.3rem}
.calc .calc-in label span{font-size:.82rem;color:var(--ink-3t);line-height:1.35}
.calc .calc-in i{font-style:normal}
.calc .calc-in .from{font-style:normal;color:var(--blue)}
.calc .calc-in input{font-family:var(--mono);font-size:.95rem}
.calc .tablewrap{margin:.5rem 0 0}
.calc-out{min-width:0}
.calc-out td{font-family:var(--sans)!important;font-size:.92rem!important;white-space:normal!important;vertical-align:middle}
.calc-out td small{display:block;color:var(--ink-3t);font-size:.78rem;margin-top:.1rem}
.calc-out td.v{text-align:right;white-space:nowrap!important;font-family:var(--mono)!important;font-weight:500}
.calc-out tr.strong td{background:var(--blue-soft);font-weight:600}
.cur{display:inline-flex;border:1.5px solid var(--line-soft);border-radius:999px;overflow:hidden}
.cur button{font:inherit;font-family:var(--mono);font-size:.82rem;line-height:22px;padding:.05rem .75rem;border:0;background:transparent;color:var(--ink-2);cursor:pointer}
.cur button[aria-pressed="true"]{background:var(--ink);color:#fff}
.cur button:focus-visible{outline:2px solid var(--blue);outline-offset:-2px}
.calc .actions .btn{padding:.6rem 1rem;font-size:.92rem}
html.no-js .calc .calc-in,html.no-js .calc .actions,html.no-js .cur{display:none}

/* ---- таблицы: колонки делятся по содержимому, текст переносится ----
   Раньше первая колонка не переносилась (правило под колонку «Год») и у всех
   таблиц была минимальная ширина 46rem: длинный текст в первой колонке
   раздувал её и сжимал остальные, а таблица прокручивалась даже на десктопе. */
table{min-width:0;width:100%;table-layout:auto}
th,td{overflow-wrap:break-word;word-break:normal;hyphens:manual}
td:first-child{white-space:normal;font-family:inherit;font-size:inherit}
table.c2 td:first-child,table.c3 td:first-child{font-weight:500}
td,th{min-width:5.5rem}
table.c2 td,table.c2 th{min-width:0}
.thread .msg.wide:has(.tablewrap),.thread .msg.wide:has(pre){margin-left:0}
details.example .tablewrap{margin:.6rem 0}
/* на узком экране многоколоночные таблицы прокручиваются внутри себя, а не сжимаются в нечитаемые */
@media (max-width:40rem){
  table.c3{min-width:27rem}
  table.c4{min-width:36rem}
  table.c5,table.c6{min-width:44rem}
  th,td{padding:.55rem .65rem;font-size:.85rem}
}
/* длинные адреса и слова не растягивают страницу */
.msg,.sources,.sum,.done,.lead,.ex-body{overflow-wrap:break-word}
.sources a,.msg a{overflow-wrap:anywhere}
pre{max-width:100%}

/* ---- оглавление курса из нижней панели ---- */
.next.dock .tocbtn{flex:none}
dialog.contents{width:min(34rem,calc(100vw - 2rem));max-height:min(46rem,calc(100dvh - 2rem));padding:0;border:1.5px solid var(--line-soft);border-radius:var(--r-card);background:var(--paper);color:var(--ink);overflow:hidden}
dialog.contents[open]{display:flex;flex-direction:column}
dialog.contents::backdrop{background:rgba(15,20,30,.45)}
.contents .ch{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem 1.25rem;border-bottom:1.5px solid var(--line-soft)}
.contents .ch h2{margin:0;font-size:1.15rem}
.contents .x{font:inherit;font-size:1.6rem;line-height:1;width:2.4rem;height:2.4rem;border:0;background:none;color:var(--ink);cursor:pointer;border-radius:var(--r-btn)}
.contents .x:hover{background:var(--surface)}
.contents .cb{overflow-y:auto;padding:1rem 1.25rem 1.1rem;overscroll-behavior:contain}
.contents .mono{margin:.4rem 0 .3rem}
.contents ol{list-style:none;margin:0 0 1.1rem;padding:0}
.contents li{margin:0;border-top:1px solid var(--line-soft)}
.contents li:first-child{border-top:0}
.contents li a{display:grid;grid-template-columns:2.2rem 1fr auto;gap:.5rem;align-items:baseline;padding:.55rem 0;color:var(--ink);text-decoration:none;font-size:.98rem;line-height:1.4}
.contents li a:hover span:nth-child(2){color:var(--blue)}
.contents li a:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.contents .n{font-family:var(--mono);font-size:.8rem;color:var(--blue)}
.contents .st{font-family:var(--mono);font-size:.75rem;font-style:normal;color:var(--ink-3t);white-space:nowrap}
.contents li.is-done .st{color:var(--green)}
.contents li.is-here a{font-weight:600}
.contents li.is-here .st{color:var(--blue)}
.contents li.is-locked a,.contents li.is-locked .n{color:var(--ink-3t)}
.contents .note{margin:0}
@media (max-width:40rem){
  .next.dock .tocbtn{font-size:0;padding:.85rem 1.05rem}
  .next.dock .tocbtn::before{content:"☰";font-size:1.05rem}
}

/* ---- промпт для документа ---- */
.card.prompt pre{max-height:24rem;overflow:auto;white-space:pre-wrap;overflow-wrap:anywhere;margin:0;background:var(--surface)}
.card.prompt pre:focus-visible{outline:2px solid var(--blue);outline-offset:2px}

/* ---- SEO: хлебные крошки, подпись, соседние блоки, вопросы и ответы, словарь ---- */
.crumbs{font-family:var(--mono);font-size:.78rem;color:var(--ink-3t);margin:0 0 1.25rem;display:flex;flex-wrap:wrap;gap:.4rem;align-items:center}
.crumbs a{color:var(--ink-3t)}
.crumbs a:hover{color:var(--blue)}
.crumbs i{font-style:normal;opacity:.6}
.byline{margin:.9rem 0 0}
.byline a{color:inherit}
.subtitle{font-size:1.25rem;color:var(--ink-2);margin:.6rem 0 0}
.faqblock{border:1.5px solid var(--line-soft);border-radius:var(--r-card);background:var(--surface);padding:1.2rem 1.4rem;margin:2rem 0}
.faqblock h3{font-size:1.02rem;margin:1rem 0 .35rem}
.faqblock p{margin:0}
a.term{color:inherit;text-decoration:underline dotted;text-underline-offset:3px}
a.term:hover{color:var(--blue)}
.terms{margin:1.5rem 0 2rem}
.terms>div{margin:0 0 1rem;scroll-margin-top:5rem;line-height:1.6}
.terms dt{font-weight:700;display:inline}
.terms dd{display:inline}
.terms>div:target dt a{color:var(--blue)}
.terms dt a{color:inherit;text-decoration:none}
.terms dt a:hover{color:var(--blue)}
.terms dd{margin:0;color:var(--ink-2)}
.chapter{scroll-margin-top:5rem}
.route p{margin:.7rem 0}
/* все варианты развилки текстом: только без JavaScript, с ним варианты показывает симулятор */
html.js section.stage.static-only{display:none!important}
.static-only details{border-top:1.5px solid var(--line-soft);padding:1rem 0}
.static-only summary{cursor:pointer}

/* ---- вступительное слово автора на главной курса: обычный текст страницы ---- */
.intro{margin:1.75rem 0;font-size:1.15rem;color:var(--ink-2)}
.intro p{margin:0 0 1rem}
.intro p:last-child{margin-bottom:0}

/* ---- планы в AISuppy: предложение и окно с вопросами ---- */
.ais-offer{border:1.5px solid var(--line-soft);border-radius:var(--r-card);background:var(--surface);padding:1.2rem 1.4rem;margin:1.5rem 0}
.ais-offer p{margin:0}
.ais fieldset{border:0;padding:0;margin:0 0 1.1rem}
.ais legend{font-weight:600;padding:0;margin-bottom:.5rem}
.ais .opts{display:flex;flex-wrap:wrap;gap:.4rem;align-items:center}
.ais .opts label{cursor:pointer}
.ais .opts label input{position:absolute;opacity:0;pointer-events:none}
.ais .opts label span{display:inline-block;padding:.45rem .8rem;border:1.5px solid var(--line-soft);border-radius:999px;font-size:.92rem;background:var(--white)}
.ais .opts label input:checked+span{background:var(--ink);border-color:var(--ink);color:#fff}
.ais .opts label input:focus-visible+span{outline:2px solid var(--blue);outline-offset:2px}
.ais .opts input[type=time],.ais .opts input[type=date]{font:inherit;padding:.4rem .6rem;border:1.5px solid var(--line-soft);border-radius:var(--r-field)}
.ais-sum{font-weight:600;margin:.2rem 0 0}
.ais .actions{margin-top:1rem}
.ais .note{margin:1.1rem 0 0}

/* на итоге блока нижняя панель ведёт к соседним блокам; без JavaScript она остаётся видимой обычной строкой ссылок */
html.no-js [data-kind="done"] .next.dock{display:flex;position:static;flex-wrap:wrap}
html.no-js [data-kind="done"] .next.dock .tocbtn{display:none}

/* ---- кнопка «Скопировать» под блоком кода в разборе ---- */
.copybar{display:flex;gap:.75rem;align-items:center;margin:.5rem 0 1rem}
.copybar .btn{padding:.5rem .9rem;font-size:.9rem}
/* промпт — сплошной текст: переносится по ширине и не растягивает страницу; шаблоны и схемы остаются как набраны */
.chapter pre.is-prompt{max-height:26rem;overflow:auto;white-space:pre-wrap;overflow-wrap:anywhere}