:root{--bg:#fff;--ink:#1b2430;--muted:#5b6673;--line:#d8dee5;--acc:#1d4f6e;--tip:#e8f1f7;--warn:#fff5d6}
@media (prefers-color-scheme:dark){:root{--bg:#14191f;--ink:#e6ebf0;--muted:#9aa5b1;--line:#2c3540;--acc:#7fb6d9;--tip:#1b2a36;--warn:#3a3218}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
main{max-width:900px;margin:0 auto;padding:24px 16px 64px}
h1{font-size:1.9rem;margin:.2em 0 0;color:var(--acc)}
.lead{color:var(--muted);margin:.2em 0 1.5em}
h2{font-size:1.4rem;margin:2em 0 .6em;padding-top:.6em;border-top:2px solid var(--line);color:var(--acc)}
h3{font-size:1.1rem;margin:1.4em 0 .4em}
code{background:var(--tip);padding:1px 5px;border-radius:4px;font-size:.92em;word-break:break-all}
a{color:var(--acc)}
.toc{background:var(--tip);border-radius:10px;padding:14px 18px}
.toc ol{margin:.5em 0 0;columns:2;column-gap:28px}
@media (max-width:600px){.toc ol{columns:1}}
.tip,.warn{border-radius:10px;padding:12px 16px;margin:1em 0}
.tip{background:var(--tip);border-left:5px solid var(--acc)}
.warn{background:var(--warn);border-left:5px solid #c99a06}
ol.big li{margin:.4em 0;font-size:1.05rem}
li{margin:.25em 0}
figure{margin:1.2em 0;text-align:center}
figure img{max-width:100%;height:auto;border:1px solid var(--line);border-radius:8px;box-shadow:0 2px 10px rgba(0,0,0,.08)}
figure img.narrow{max-width:520px;width:100%}
figcaption{color:var(--muted);font-size:.9rem;margin-top:6px}
table{border-collapse:collapse;width:100%;margin:.8em 0}
td,th{border:1px solid var(--line);padding:7px 10px;text-align:left;vertical-align:top}
th{background:var(--tip)}
dt{font-weight:700;margin-top:.9em}
dd{margin:.2em 0 0 0}
@media print{body{font-size:12pt}:root{--bg:#fff;--ink:#000;--tip:#eef3f7;--warn:#fff5d6}h2{break-before:auto}figure{break-inside:avoid}figure img{max-height:180mm;box-shadow:none}.toc ol{columns:2}}

ol.steps{counter-reset:s;list-style:none;padding:0}
ol.steps>li{counter-increment:s;position:relative;padding:8px 0 8px 46px;margin:.3em 0}
ol.steps>li::before{content:counter(s);position:absolute;left:0;top:6px;width:32px;height:32px;border-radius:50%;background:var(--acc);color:var(--bg);font-weight:700;display:flex;align-items:center;justify-content:center}
table.map td.n{width:42px;text-align:center;font-weight:700;font-size:1.3rem;color:var(--acc)}
.sides{display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin:1em 0}
.sides svg{max-width:100%;height:auto;flex:0 1 360px}
.sides>div,.sides>ul{flex:1 1 260px}
.sides svg text{fill:var(--ink)}
.tip.big{font-size:1.1rem}
.tblwrap{overflow-x:auto}
@media (max-width:600px){td,th{padding:6px 6px;font-size:.95rem;hyphens:auto;overflow-wrap:anywhere}}

/* Оформление ЭкТен; содержимое инструкции — из выпуска 1.4.0. */
:root{--bg:#07172f;--ink:#f3f7fb;--muted:#c8d8e7;--line:#315d87;--acc:#72cdf0;--tip:#0d3158;--warn:#332b19}
body{min-width:0;font-family:Arial,sans-serif;background:linear-gradient(180deg,#07172f,#0a1b36 58%,#08162c)}
main{min-width:0;padding-top:36px}
h1{line-height:1.15;color:#f3f7fb}
h1,h2,h3,p,li,td,th{overflow-wrap:anywhere}
.ek-calc-header{padding:16px max(16px,calc((100% - 868px)/2));background:#05162a;border-bottom:1px solid #315d87}
.ek-calc-header a{display:inline-flex;gap:14px;align-items:center;color:#d7b65d;font-size:20px;font-weight:900;text-decoration:none;max-width:100%}
.ek-calc-header img{width:72px;height:auto}
.ek-calc-open{margin:32px 0}
.button{display:inline-block;max-width:100%;padding:13px 20px;background:linear-gradient(135deg,#1db9e6,#1388c8);border-radius:9px;color:#041321;text-decoration:none;text-align:center;font-weight:900;overflow-wrap:anywhere}
.ek-calc-footer{max-width:900px;margin:auto;padding:24px 16px;border-top:1px solid #315d87;color:#c8d8e7;font-size:14px}
.ek-calc-footer a{display:inline-block;margin:8px 16px 0 0}
main>.ek-expert{width:100%;margin-bottom:0}
@media(max-width:600px){main{padding-top:24px}h1{font-size:1.75rem}.button{display:block;width:100%}.ek-calc-header a{font-size:17px}}
@media print{.ek-calc-header,.ek-calc-open,.ek-calc-footer,.ek-expert{display:none}body{background:#fff;color:#000}h1{color:#000}}