/* Шапка с меню для информационных страниц (2026-09-25).
   Палитра согласована с tashabbus.css и главной: navy -> blue -> cyan. */
:root{
  --sn-b1:#1d4ed8; --sn-b2:#134e8e; --sn-sky:#38bdf8; --sn-cyan:#17b8c4;
  --sn-ink:#0f172a; --sn-body:#475569; --sn-line:#e2e8f0;
  --sn-h:64px; --sn-ease:cubic-bezier(.22,.61,.36,1);
}
.snav{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:saturate(180%) blur(14px);backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid rgba(15,23,42,.08);
  transition:background .25s var(--sn-ease),box-shadow .25s var(--sn-ease)}
.snav:before{content:"";display:block;height:3px;
  background:linear-gradient(90deg,var(--sn-b2),var(--sn-b1) 45%,var(--sn-sky) 80%,var(--sn-cyan))}
.snav.is-stuck{background:rgba(255,255,255,.95);box-shadow:0 10px 30px rgba(12,18,34,.10)}
.snav__in{max-width:1100px;margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:18px;
  min-height:var(--sn-h);position:relative}

/* бренд */
.snav__brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;text-decoration:none}
.snav__brand:hover{text-decoration:none}
.snav__mark{position:relative;overflow:hidden;flex:none;width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;background:linear-gradient(135deg,var(--sn-b1),var(--sn-sky));
  box-shadow:0 6px 16px rgba(29,78,216,.32);transition:box-shadow .2s var(--sn-ease),transform .2s var(--sn-ease)}
.snav__mark svg{width:24px;height:24px;fill:#fff}
.snav__mark:after{content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,transparent 36%,rgba(255,255,255,.55) 50%,transparent 64%);
  transform:translateX(-130%);animation:sn-shine 7s var(--sn-ease) 2.5s infinite}
@keyframes sn-shine{0%{transform:translateX(-130%)}9%{transform:translateX(130%)}9.01%,100%{transform:translateX(-130%)}}
.snav__brand:hover .snav__mark{transform:translateY(-1px);box-shadow:0 8px 20px rgba(29,78,216,.42)}
.snav__txt{display:flex;flex-direction:column;gap:1px;min-width:0;line-height:1.2}
.snav__txt strong{font-size:17px;font-weight:800;letter-spacing:-.02em;color:var(--sn-ink)}
.snav__txt span{font-size:11.5px;font-weight:600;letter-spacing:.02em;color:#94a3b8;white-space:nowrap}

/* меню */
.snav__nav{margin-left:auto;min-width:0}
.snav__list{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0;flex-wrap:nowrap}
.snav__item{position:relative;margin:0}
.snav__item>a{position:relative;display:flex;align-items:center;gap:6px;padding:9px 11px;border-radius:999px;
  color:var(--sn-ink);font-size:14px;font-weight:650;line-height:1.2;white-space:nowrap;text-decoration:none;
  transition:background .16s,color .16s}
.snav__item>a:hover{background:rgba(29,78,216,.09);color:var(--sn-b1);text-decoration:none}
.snav__item>a:before{content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--sn-b1),var(--sn-sky));transform:scaleX(0);transition:transform .24s var(--sn-ease)}
.snav__item>a:hover:before{transform:scaleX(1)}
.snav__item.is-cur>a{background:linear-gradient(135deg,var(--sn-b1),var(--sn-b2));color:#fff;
  box-shadow:0 4px 12px rgba(29,78,216,.3)}
.snav__item.is-cur>a:hover{color:#fff;background:linear-gradient(135deg,var(--sn-b1),var(--sn-b2))}
.snav__item.is-cur>a:before{display:none}
.snav__car{width:11px;height:11px;flex:none;fill:currentColor;opacity:.55;transition:transform .2s var(--sn-ease)}
.snav__item.has-kids:hover .snav__car,.snav__item.has-kids:focus-within .snav__car{transform:rotate(180deg)}

/* выпадающее */
.snav__drop{position:absolute;top:calc(100% + 8px);left:0;min-width:266px;list-style:none;margin:0;padding:8px;
  background:#fff;border:1px solid var(--sn-line);border-radius:16px;box-shadow:0 22px 50px rgba(15,23,42,.16);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .18s var(--sn-ease),transform .18s var(--sn-ease),visibility .18s;z-index:70}
.snav__item.to-right .snav__drop{left:auto;right:0}
.snav__item.has-kids:hover>.snav__drop,.snav__item.has-kids:focus-within>.snav__drop{opacity:1;visibility:visible;transform:none}
.snav__drop:before{content:"";position:absolute;left:0;right:0;top:-10px;height:10px}
.snav__drop a{display:block;padding:9px 13px;border-radius:10px;color:var(--sn-body);font-size:14.5px;
  font-weight:550;line-height:1.35;text-decoration:none;transition:background .15s,color .15s,transform .15s var(--sn-ease)}
.snav__drop a:hover{background:rgba(29,78,216,.08);color:var(--sn-b1);transform:translateX(2px);text-decoration:none}
.snav__drop a.is-cur{background:rgba(29,78,216,.10);color:var(--sn-b1);font-weight:700}

/* бургер */
.snav__burger{display:none;align-items:center;gap:9px;margin-left:auto;padding:9px 15px 9px 13px;
  border:0;border-radius:12px;font:inherit;font-size:14.5px;font-weight:700;color:#fff;cursor:pointer;
  background:linear-gradient(135deg,var(--sn-b1),var(--sn-b2));box-shadow:0 6px 16px rgba(29,78,216,.32)}
.snav__bars{position:relative;display:block;width:18px;height:12px}
.snav__bars span,.snav__bars span:before,.snav__bars span:after{position:absolute;left:0;width:18px;height:2px;
  border-radius:2px;background:currentColor;transition:transform .22s var(--sn-ease),opacity .15s}
.snav__bars span{top:5px}
.snav__bars span:before{content:"";top:-5px}
.snav__bars span:after{content:"";top:5px}
.snav__burger[aria-expanded="true"] .snav__bars span{background:transparent}
.snav__burger[aria-expanded="true"] .snav__bars span:before{transform:translateY(5px) rotate(45deg)}
.snav__burger[aria-expanded="true"] .snav__bars span:after{transform:translateY(-5px) rotate(-45deg)}
.snav__scrim{display:none}

/* планшет и телефон */
@media (max-width:1024px){
  .snav__burger{display:inline-flex}
  .snav__nav{position:absolute;left:0;right:0;top:100%;margin:0;background:#fff;
    border-top:2px solid rgba(29,78,216,.18);border-bottom:1px solid var(--sn-line);
    box-shadow:0 18px 40px rgba(15,23,42,.16);opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .18s var(--sn-ease),transform .18s var(--sn-ease),visibility .18s;z-index:65;
    max-height:calc(100vh - var(--sn-h));overflow-y:auto}
  .snav__nav.is-open{opacity:1;visibility:visible;transform:none}
  .snav__list{flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 16px;max-width:1100px;margin:0 auto}
  .snav__item>a{font-size:16px}
  .snav__item+.snav__item{border-top:1px solid #eef2f7}
  .snav__item>a{border-radius:10px;padding:13px 10px;font-size:16px}
  .snav__item>a:before{display:none}
  .snav__car{display:none}
  .snav__drop{position:static;display:block;opacity:1;visibility:visible;transform:none;min-width:0;
    margin:0 0 8px;padding:0 0 0 12px;border:0;border-left:2px solid #e2ecf7;border-radius:0;box-shadow:none}
  .snav__drop a{padding:10px;font-size:15px}
  .snav__scrim{display:block;position:fixed;inset:calc(var(--sn-h) + 4px) 0 0;background:rgba(11,27,58,.34);
    opacity:0;transition:opacity .18s var(--sn-ease);z-index:55}
  .snav__scrim.is-on{opacity:1}
  .snav__scrim[hidden]{display:none}
}
@media (max-width:600px){
  :root{--sn-h:58px}
  .snav__txt span{display:none}
  .snav__txt strong{font-size:16px}
  .snav__mark{width:34px;height:34px;border-radius:10px}
  .snav__btxt{display:none}
  .snav__burger{padding:10px 12px}
}
body.snav-lock{overflow:hidden}

/* оглавление статьи липнет под меню */
.toc{top:calc(var(--sn-h) + 4px)!important;z-index:50}
h2[id],h3[id],section[id],div[id]{scroll-margin-top:calc(var(--sn-h) + 62px)}
@media (prefers-reduced-motion:reduce){
  .snav__mark:after{animation:none}
  .snav *,.snav *:before,.snav *:after{transition-duration:.001ms!important}
}

/* узкий десктоп: уплотняем, чтобы меню не переносилось на вторую строку */
@media (min-width:1025px) and (max-width:1190px){
  .snav__in{gap:10px;padding:0 14px}
  .snav__item>a{padding:9px 9px;font-size:13.5px}
  .snav__txt span{display:none}
}

/* Русские подписи длиннее узбекских — подтягиваем пункты, чтобы строка влезала (2026-09-25) */
@media (min-width:1025px){
  .snav__item>a{padding:9px 10px;font-size:13.5px}
}
@media (min-width:1025px) and (max-width:1190px){
  .snav__in{gap:10px;padding:0 12px}
  .snav__item>a{padding:9px 7px;font-size:13px}
  .snav__txt span{display:none}
}
.snav__item>a,.snav__brand{white-space:nowrap}
.snav__item{flex:none}
.snav__car{flex:none}
@media (max-width:1024px){.snav__item{flex:auto}}