/* Слева — компактная панель разделов; подписи раскрываются без сдвига основного контента. */
.side-navigation{--nav-tone:var(--brand);position:fixed;z-index:80;left:8px;top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:5px;width:52px;max-height:calc(100svh - 32px);padding:5px;border:1px solid #344650;border-radius:14px;background:#111c25;box-shadow:0 8px 28px #0003;box-sizing:border-box}
.side-navigation button,.side-navigation a{-webkit-tap-highlight-color:transparent}
.side-nav-toggle,.side-nav-link,.side-nav-controls>a{position:relative;display:flex;align-items:center;justify-content:center;gap:12px;flex:none;width:40px;min-height:40px;padding:8px;border:0;border-radius:8px;background:transparent;color:#aabdc7;text-decoration:none;font:15px/1.4 Inter,Arial,sans-serif;cursor:pointer;box-sizing:border-box}
.side-nav-toggle{color:#c1d8c1;background:#1a2e28}.side-nav-toggle>svg,.side-nav-link>svg,.side-nav-controls svg{flex:none}
.side-nav-toggle:hover,.side-nav-controls>a:hover,.side-nav-link:hover{background:#23333e;color:#e1e8ea}
.side-nav-link[aria-current]{background:color-mix(in srgb,var(--nav-tone) 15%,#14232b);color:var(--nav-tone);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--nav-tone) 38%,#213b37)}
.side-nav-link[aria-current]:before{content:'';position:absolute;left:-6px;top:14px;width:2px;height:12px;border-radius:2px;background:var(--nav-tone)}
.side-nav-menu{min-height:0;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:none}.side-nav-menu::-webkit-scrollbar{display:none}
.side-nav-menu ol{display:flex;flex-direction:column;gap:2px;list-style:none;margin:0;padding:0}.side-nav-menu li{margin:0;padding:0}
.side-nav-legal{border-top:1px solid #2b3e48;padding-top:5px!important;margin-top:4px!important}
.side-label,.side-number,.side-nav-caption,.side-nav-contacts,.side-toggle-label,.side-close,.side-control-label{display:none}
.side-nav-controls{display:flex;flex-direction:column;gap:3px;border-top:1px solid #30434c;padding-top:5px}
.side-nav-controls>a[aria-disabled=true]{opacity:.3;cursor:default}
.side-nav-backdrop{position:fixed;z-index:79;inset:0;border:0;background:#03090d66;cursor:default}.side-nav-backdrop[hidden]{display:none}
.side-navigation[data-expanded=true]{width:278px;padding:10px;gap:8px;border-color:#4a626a}
.side-navigation[data-expanded=true] .side-nav-toggle{width:100%;justify-content:flex-start;padding-inline:10px;min-height:42px}
.side-navigation[data-expanded=true] .side-toggle-label{display:block;flex:1;text-align:left;color:#e0e8e7;font-size:16px;font-weight:500}
.side-navigation[data-expanded=true] .side-close{display:block;font-size:24px;line-height:1;color:#b3c4ca}
.side-navigation[data-expanded=true] .side-nav-caption{display:block;margin:7px 10px 10px;color:#8da5b1;font-size:15px}
.side-navigation[data-expanded=true] .side-nav-link{width:100%;justify-content:flex-start;min-height:42px;padding-inline:10px;gap:12px}
.side-navigation[data-expanded=true] .side-label{display:block;flex:1;min-width:0}
.side-navigation[data-expanded=true] .side-number{display:block;color:#6f8995;font-size:13px;font-variant-numeric:tabular-nums}
.side-navigation[data-expanded=true] .side-nav-contacts{display:grid;gap:7px;padding:12px 10px 5px;border-top:1px solid #30434c;font-size:15px;line-height:1.5;color:#b8cbd3}
.side-nav-contacts a{padding:2px 0;overflow-wrap:anywhere}.side-nav-contacts a:hover{color:var(--brand)}.side-nav-contacts .side-max{color:#97c8d8}
.side-navigation[data-expanded=true] .side-nav-controls{flex-direction:row;gap:8px;padding-top:8px}
.side-navigation[data-expanded=true] .side-nav-controls>a{width:50%;min-height:42px;border:1px solid #344c56}
.side-navigation[data-expanded=true] .side-control-label{display:block}
.side-nav-tooltip{position:fixed;z-index:81;max-width:240px;padding:8px 12px;border:1px solid #405764;border-radius:6px;background:#182832;color:#dce7eb;font:15px/1.4 Inter,Arial,sans-serif;pointer-events:none;box-shadow:0 4px 14px #0003}
.side-nav-tooltip[hidden]{display:none}
.side-navigation :is(a,button):focus-visible{outline:2px solid #9de68c;outline-offset:2px}
@media(min-width:1200px){body.has-side-navigation{padding-left:64px}}
@media(min-width:1200px) and (max-width:1279px){.site-header .header-inner{gap:16px}.site-header nav{gap:12px}}
/* На телефоне три действия находятся у нижнего края; список появляется только по запросу. */
@media(max-width:1199px){
 .side-navigation{left:max(14px,env(safe-area-inset-left));top:auto;bottom:max(14px,env(safe-area-inset-bottom));transform:none;flex-direction:row;align-items:center;width:auto;gap:4px;padding:5px;max-width:calc(100vw - 28px);max-height:calc(100svh - 28px);border-radius:12px;box-shadow:0 5px 18px #0004}
 .side-nav-toggle{width:auto;min-width:112px;gap:8px;padding-inline:10px}.side-toggle-label{display:block;font-size:15px}
 .side-navigation:not([data-expanded=true]) .side-nav-menu{display:none}.side-nav-controls{flex-direction:row;gap:3px;padding:0 0 0 4px;border-top:0;border-left:1px solid #30434c}
 .side-navigation[data-expanded=true]{width:min(302px,calc(100vw - 28px));align-items:stretch;flex-direction:column;padding:10px}
 .side-navigation[data-expanded=true] .side-nav-menu{max-height:calc(100svh - 285px)}
 .side-navigation[data-expanded=true] .side-nav-controls{border-left:0;border-top:1px solid #30434c;padding:8px 0 0}
 .side-navigation[data-expanded=true] .side-nav-contacts a{min-height:28px;display:flex;align-items:center}
 body.has-side-navigation{padding-bottom:calc(80px + env(safe-area-inset-bottom))}
 .side-nav-tooltip{display:none!important}
}
@media(max-height:680px) and (min-width:1200px){.side-nav-link{min-height:36px}.side-nav-menu ol{gap:1px}}
@media(prefers-reduced-motion:no-preference){.side-navigation a,.side-navigation button{transition:background .16s,color .16s,border-color .16s}}
html:not(.js) .side-navigation,html:not(.js) .side-nav-backdrop{display:none}
/* Цвет иконок помогает узнавать решения даже в свёрнутой панели. */
.side-nav-link[style]>svg{color:var(--nav-tone);opacity:.85}
.side-navigation[data-expanded=true] .side-nav-menu{scrollbar-width:thin;scrollbar-color:#46606d transparent}
.side-navigation[data-expanded=true] .side-nav-menu::-webkit-scrollbar{display:block;width:3px}.side-navigation[data-expanded=true] .side-nav-menu::-webkit-scrollbar-thumb{background:#46606d;border-radius:3px}
@media(prefers-reduced-motion:no-preference){.side-navigation[data-expanded=true]{animation:side-menu-enter .18s ease-out}.side-nav-backdrop:not([hidden]){animation:side-backdrop-enter .18s ease-out}}
@keyframes side-menu-enter{from{opacity:.6;translate:-5px 0}to{opacity:1;translate:0 0}}
@keyframes side-backdrop-enter{from{opacity:0}to{opacity:1}}
@media(min-width:1200px) and (max-height:760px){.side-navigation:not([data-expanded=true]) .side-nav-link{min-height:36px;padding-block:7px}}
@media(min-width:1200px) and (max-height:900px){.side-navigation[data-expanded=true] .side-nav-link{min-height:34px;padding-block:6px}.side-navigation[data-expanded=true] .side-nav-caption{margin:3px 10px 5px;line-height:1.3}}
@media(max-width:1199px){.side-menu-open .header-menu-toggle{visibility:hidden}}