:root{--bg:#f6f8fb;--card:#fff;--ink:#1b2430;--muted:#5b6778;--line:#e3e8ef;--brand:#1e88e5;--brand-d:#1565c0;--brand-l:#e8f2fd;--code:#0f172a;--code-ink:#e2e8f0;--ok:#0f9d58;--warn:#b45309;--radius:12px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;overflow-wrap:break-word}
a{color:var(--brand-d);text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{color:var(--brand)}
img{max-width:100%;height:auto}
.wrap{max-width:1160px;margin:0 auto;padding:0 16px}
/* шапка */
.site-head{background:#fff;border-bottom:1px solid var(--line)}
.head-in{display:flex;align-items:center;gap:18px;min-height:64px;flex-wrap:wrap;padding-top:8px;padding-bottom:8px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:700;font-size:20px;letter-spacing:-.2px}
.brand img{width:36px;height:36px;border-radius:50%}
.brand small{display:block;font-weight:400;font-size:12.5px;color:var(--muted);letter-spacing:0}
.menu{display:flex;flex-wrap:wrap;gap:4px;margin-left:auto}
.menu a{padding:7px 12px;border-radius:8px;text-decoration:none;color:var(--ink);font-size:15.5px;font-weight:500}
.menu a:hover,.menu a.on{background:var(--brand-l);color:var(--brand-d)}
/* крошки */
.crumbs{font-size:14px;color:var(--muted);margin:18px 0 10px}
.crumbs a{color:var(--muted)}
.crumbs i{font-style:normal;margin:0 4px;color:#9aa5b4}
/* статья */
main{display:block;padding-bottom:40px}
.post{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 36px 32px;max-width:860px;margin:0 auto}
.crumbs-wrap{max-width:860px;margin:0 auto}
.post h1{font-size:34px;line-height:1.22;margin:0 0 10px;letter-spacing:-.4px}
.meta{color:var(--muted);font-size:14px;margin:0 0 18px}
.lang-note{display:inline-block;background:#f1f5f9;border-radius:6px;padding:1px 8px;margin-left:8px;font-size:13px}
.post-body h2{font-size:26px;line-height:1.3;margin:34px 0 12px;letter-spacing:-.2px}
.post-body h3{font-size:21px;line-height:1.35;margin:26px 0 10px}
.post-body h4{font-size:18px;margin:22px 0 8px}
.post-body p,.post-body ul,.post-body ol{margin:0 0 16px}
.post-body li{margin:4px 0}
.post-body blockquote{margin:0 0 16px;padding:10px 16px;border-left:4px solid var(--brand);background:var(--brand-l);border-radius:0 8px 8px 0}
.post-body figure{margin:22px auto;max-width:min(100%,640px);text-align:center}
.post-body figure img{display:block;margin:0 auto;width:auto;max-width:100%;height:auto;border-radius:8px;border:1px solid var(--line)}
.post-body figcaption{font-size:14px;color:var(--muted);margin-top:8px;line-height:1.45}
.post-body img{display:block;margin:16px auto;width:auto;max-width:min(100%,720px);height:auto}
.post-body code{font:0.88em/1.5 Consolas,"Cascadia Mono","SFMono-Regular",Menlo,monospace;background:#eef2f7;border-radius:5px;padding:1px 5px;overflow-wrap:anywhere}
.post-body pre{position:relative;background:var(--code);color:var(--code-ink);border-radius:10px;padding:16px 18px;margin:0 0 18px;overflow-x:auto;max-width:100%;-webkit-overflow-scrolling:touch}
.post-body pre code{background:none;padding:0;color:inherit;font-size:14.5px;line-height:1.6;white-space:pre;overflow-wrap:normal;display:block}
.copy{position:absolute;top:8px;right:8px;background:#1e293b;color:#cbd5e1;border:1px solid #334155;border-radius:6px;font-size:12.5px;padding:3px 9px;cursor:pointer;opacity:.85}
.copy:hover{opacity:1;color:#fff}
.post-body kbd{display:inline-block;font:600 .85em/1.3 Consolas,monospace;padding:1px 7px;border:1px solid #cbd5e1;border-bottom-width:3px;border-radius:6px;background:#f8fafc}
.table-wrap{overflow-x:auto;margin:0 0 18px;border:1px solid var(--line);border-radius:10px;-webkit-overflow-scrolling:touch}
.table-wrap table{border-collapse:collapse;width:100%;min-width:480px;font-size:15.5px}
.table-wrap th,.table-wrap td{border-bottom:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top}
.table-wrap th{background:#f1f5f9;font-weight:600}
.table-wrap tr:last-child td{border-bottom:0}
.note,.tip{padding:12px 16px;border-radius:10px;margin:0 0 16px}
.note{background:#fff7ed;border-left:4px solid #f59e0b}
.tip{background:#ecfdf5;border-left:4px solid #10b981}
ol.steps{counter-reset:s;list-style:none;padding-left:0}
ol.steps>li{counter-increment:s;position:relative;padding:4px 0 4px 44px;margin:8px 0}
ol.steps>li:before{content:counter(s);position:absolute;left:0;top:3px;width:30px;height:30px;border-radius:50%;background:var(--brand);color:#fff;font-weight:700;font-size:15px;display:flex;align-items:center;justify-content:center}
.lead{background:var(--brand-l);border-radius:10px;padding:14px 18px;margin:0 0 20px}
.lead p{margin:0 0 8px}.lead p:last-child{margin:0}
.lead-h{font-weight:700;color:var(--brand-d);font-size:14px;text-transform:uppercase;letter-spacing:.5px}
.toc{border:1px solid var(--line);border-radius:10px;padding:12px 18px;margin:0 0 22px;background:#fbfcfe}
.toc summary{font-weight:700;cursor:pointer}
.toc ol{margin:10px 0 0;padding-left:22px}
.toc li{margin:3px 0;font-size:15.5px}
.dl{display:flex;flex-wrap:wrap;gap:10px}
.btn{display:inline-block;background:var(--brand);color:#fff!important;text-decoration:none;border-radius:8px;padding:9px 16px;font-weight:600;font-size:15.5px}
.btn:hover{background:var(--brand-d)}
.video{position:relative;padding-top:56.25%;margin:0 0 18px;border-radius:10px;overflow:hidden;background:#000}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.faq{margin-top:30px}
.faq details{border:1px solid var(--line);border-radius:10px;margin:0 0 10px;padding:10px 16px;background:#fbfcfe}
.faq summary{font-weight:600;cursor:pointer}
.faq details div{margin-top:8px}
/* списки и карточки */
.list-head{max-width:1160px;margin:0 auto 18px}
.list-head h1{font-size:32px;margin:6px 0 8px;line-height:1.2}
.intro{color:var(--muted);margin:0;max-width:780px}
.grid{display:grid;gap:16px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;text-decoration:none;color:var(--ink);transition:box-shadow .15s,transform .15s}
.card:hover{box-shadow:0 8px 24px rgba(15,23,42,.08);transform:translateY(-2px);color:var(--ink)}
.thumb{display:block;aspect-ratio:16/9;background:#eef3fa;overflow:hidden}
.thumb img{width:100%;height:100%;object-fit:cover;display:block}
.thumb-ph{display:flex;align-items:center;justify-content:center;font:700 34px/1 Georgia,serif;color:#fff;background:linear-gradient(135deg,#1e88e5,#42a5f5)}
.card-b{padding:12px 14px 14px;display:flex;flex-direction:column;gap:5px}
.card-c{font-size:12.5px;color:var(--brand-d);font-weight:600;text-transform:uppercase;letter-spacing:.4px}
.card-t{font-weight:650;line-height:1.35;font-size:16.5px}
.card-d{font-size:14.5px;color:var(--muted);line-height:1.5}
.card-s .card-t{font-size:15px}
.badge{display:inline-block;font-size:11.5px;font-weight:600;color:#475569;background:#f1f5f9;border-radius:5px;padding:0 6px;margin-left:4px;vertical-align:1px}
.related{max-width:860px;margin:26px auto 0}
.rel-h{font-size:22px;margin:0 0 12px}
.pager{display:flex;flex-wrap:wrap;gap:6px;margin:22px 0 0}
.pager a{min-width:40px;text-align:center;padding:7px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;text-decoration:none}
.pager a.on{background:var(--brand);color:#fff;border-color:var(--brand)}
/* главная */
.hero{background:linear-gradient(135deg,#0d47a1,#1e88e5);color:#fff;border-radius:16px;padding:34px 36px;margin:22px 0 26px}
.hero h1{font-size:36px;line-height:1.2;margin:0 0 10px;letter-spacing:-.5px}
.hero p{margin:0 0 16px;max-width:760px;color:#e3efff;font-size:18px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{background:rgba(255,255,255,.14);color:#fff;text-decoration:none;border-radius:20px;padding:6px 14px;font-size:15px;border:1px solid rgba(255,255,255,.25)}
.chip:hover{background:rgba(255,255,255,.25);color:#fff}
.home-sec{margin:0 0 30px}
.sec-h{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:0 0 12px}
.sec-h h2{font-size:24px;margin:0}
.sitemap-cols{columns:2;column-gap:32px}
.sitemap-cols li{break-inside:avoid}
.err{text-align:center;padding:30px 0}
/* подвал */
.site-foot{background:#0f1b2d;color:#c8d3e1;margin-top:20px;font-size:15px}
.foot-in{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:24px;padding-top:30px;padding-bottom:20px}
.site-foot a{color:#c8d3e1;text-decoration:none}.site-foot a:hover{color:#fff;text-decoration:underline}
.site-foot ul{list-style:none;margin:0;padding:0}.site-foot li{margin:5px 0}
.foot-h{color:#fff;font-weight:700;margin:0 0 8px}
.site-foot .brand{color:#fff}
.copy-r{border-top:1px solid #22324a;padding-top:14px;padding-bottom:18px;font-size:13.5px;color:#8fa0b6}
@media (max-width:1000px){.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}.foot-in{grid-template-columns:1fr 1fr}}
@media (max-width:720px){
 body{font-size:16.5px}
 .menu{margin-left:0;width:100%;gap:2px}.menu a{padding:6px 9px;font-size:14.5px}
 .post{padding:18px 16px 22px;border-radius:10px}
 .post h1{font-size:26px}.post-body h2{font-size:22px}.post-body h3{font-size:19px}
 .post-body pre{margin-left:-6px;margin-right:-6px;padding:14px 12px}
 .post-body pre code{font-size:13.5px}
 .hero{padding:24px 18px;border-radius:12px}.hero h1{font-size:27px}.hero p{font-size:16.5px}
 .list-head h1{font-size:26px}
 .sitemap-cols{columns:1}
}
@media (max-width:560px){.grid-3,.grid-4{grid-template-columns:minmax(0,1fr)}.foot-in{grid-template-columns:1fr}.grid-4.grid-sm2{grid-template-columns:repeat(2,minmax(0,1fr))}}