*{box-sizing:border-box}
body{font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:#f8f9fe;color:#242b3a;margin:0}
header{background:white;border-bottom:1px solid #e9eaf2}
nav{max-width:1050px;margin:auto;padding:15px 20px;display:flex;gap:24px;align-items:center;flex-wrap:wrap}
a{color:#6250c9;text-decoration:none}
a:hover{text-decoration:underline}
nav a{font-size:13px;font-weight:600;color:#50596e}
nav .guide-logo{font-size:24px;font-weight:850;color:#1d2350;margin-right:auto;letter-spacing:-1px}
.guide-logo span{color:#8465de}
main{max-width:880px;padding:45px 24px 85px;margin:auto}
h1{font-size:clamp(28px,5vw,42px);letter-spacing:-.035em;line-height:1.18;color:#1b2144;margin:14px 0 18px}
h2{font-size:24px;line-height:1.35;color:#272854;letter-spacing:-.02em;margin:37px 0 12px}
p{margin:0 0 16px}
.guide-lead{font-size:18px;color:#626c81;max-width:720px}
.guide-kicker{color:#6456b9;font-size:12px;letter-spacing:.1em;font-weight:800;text-transform:uppercase}
.guide-kicker a{letter-spacing:0;text-transform:none}
article{margin-top:26px;background:white;border-radius:18px;padding:18px 32px 35px;border:1px solid #e7eaf3}
article h2:first-child{margin-top:10px}
article ul{padding-left:24px}
article li{margin:0 0 12px}
.guide-tools{display:flex;flex-wrap:wrap;gap:9px;margin:15px 0 20px}
.guide-tools a,.guide-end a{display:inline-flex;align-items:center;border:1px solid #e2ddff;background:#f3f1ff;border-radius:10px;padding:9px 13px;font-size:13px;font-weight:700}
.guide-caution{background:#f7f8fc;border-left:3px solid #aeabc8;padding:14px 16px;font-size:13px;color:#5c6474}
.guide-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:28px}
.guide-card{background:white;border:1px solid #e5e6f1;border-radius:15px;padding:23px;display:flex;gap:12px;flex-direction:column;box-shadow:0 8px 30px #111b3607}
.guide-card strong{font-size:20px;color:#1e2241;line-height:1.35}
.guide-card span{font-size:14px;color:#646d80}
.guide-card em{margin-top:auto;font-style:normal;font-weight:700;font-size:13px}
.guide-end{margin-top:26px}
footer{border-top:1px solid #e6e8f0;padding:25px;text-align:center;font-size:12px;color:#8b91a2}
footer p{margin:3px}
@media(max-width:680px){main{padding:26px 15px 65px}article{padding:18px}.guide-grid{grid-template-columns:1fr}h2{font-size:21px}}

/* Native language picker in the compact article navigation. */
nav .language-picker{margin-left:auto;display:inline-flex;position:relative;align-items:center;
 min-width:125px;height:38px;gap:7px;padding:0 12px;
 border:1px solid #ddd9ee;border-radius:10px;background:#fff;color:#6855c9}
nav .language-picker-icon{width:17px;height:17px;flex:0 0 17px}
nav .language-picker select{font:700 12px/1.25 system-ui,sans-serif;min-width:76px;
 border:0;outline:0;appearance:none;background:transparent;color:#3c3358;
 cursor:pointer;padding:8px 17px 8px 0}
nav .language-picker select option{background:#fff;color:#292a3d}
nav .language-picker-chevron{position:absolute;right:9px;width:14px;height:14px;pointer-events:none}
nav .language-picker:focus-within{border-color:#7565df;box-shadow:0 0 0 3px #7565df24}
@media(max-width:620px){nav .language-picker{margin-left:auto;min-width:110px}}


/* Filelo custom language dropdown in article navigation. */
nav .language-picker{position:relative;display:inline-flex;border:0;padding:0;min-width:0;height:auto;box-shadow:none;overflow:visible}
nav .language-toggle{
  display:inline-flex;align-items:center;gap:8px;justify-content:space-between;
  min-width:130px;min-height:38px;padding:0 11px;
  border:1px solid #ded9ef;border-radius:10px;background:#fff;
  color:#333251;font:750 12px/1.25 system-ui,sans-serif;white-space:nowrap
}
nav .language-toggle #languageCurrent{flex:1;text-align:left}
nav .language-toggle .language-picker-icon{width:17px;height:17px;flex:0 0 17px;color:#7562dc}
nav .language-toggle .language-picker-chevron{position:static;transform:none;width:14px;height:14px;flex:0 0 14px;color:#9186b7}
nav .language-picker.is-open .language-toggle{border-color:#a89eec;background:#fbfaff}
nav .language-picker.is-open .language-picker-chevron{transform:rotate(180deg)}
nav .language-menu{
  display:block;position:absolute;z-index:60;top:calc(100% + 7px);right:0;
  min-width:165px;padding:6px;background:white;border:1px solid #e4dff0;
  border-radius:12px;box-shadow:0 16px 45px rgba(27,20,79,.16)
}
nav .language-menu[hidden]{display:none!important}
nav .language-option{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:9px 10px;min-height:37px;
  border:0;border-radius:8px;background:#fff;color:#4b506a;
  text-align:left;font:650 12px/1.35 system-ui,sans-serif;cursor:pointer
}
nav .language-option:hover,nav .language-option:focus-visible{outline:0;background:#f3f0ff;color:#6753c8}
nav .language-option[aria-checked="true"]{background:#f0edff;color:#654ed0;font-weight:800}
nav .language-option svg{width:15px;height:15px;opacity:0}
nav .language-option[aria-checked="true"] svg{opacity:1}
@media(max-width:620px){
  nav{gap:10px}
  nav .language-toggle{min-width:110px;min-height:35px;gap:5px;padding:0 8px}
}

/* New Yandex RTB side units. Keep article column readable. */
.ad-rails{width:min(880px,calc(100% - 36px));margin:0 auto 26px;
 display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.ad-rail{min-width:0}.ad-rail>div{width:100%}
@media(min-width:1380px){
  body.has-side-ads{--ad-rail-width:clamp(150px,11.5vw,210px);
    padding-inline:calc(var(--ad-rail-width) + 14px)}
  .ad-rails{display:contents}
  .ad-rail{position:fixed;top:114px;z-index:2;width:var(--ad-rail-width)}
  .ad-rail-left{left:7px}.ad-rail-right{right:7px}
}
@media(max-width:720px){
  .ad-rails{grid-template-columns:1fr;gap:12px}
}

/* Wider native-size Yandex side ad units. Narrow viewports use inline units. */
@media(min-width:1700px){
  body.has-side-ads{--ad-rail-width:300px;padding-inline:314px}
  body.has-side-ads .ad-rail{width:300px;top:114px}
}
@media(min-width:1380px) and (max-width:1699px){
  body.has-side-ads{padding-inline:0}
  body.has-side-ads .ad-rails{
    display:grid;grid-template-columns:repeat(2,minmax(300px,1fr));
    max-width:720px;width:calc(100% - 36px);margin:0 auto 26px;
  }
  body.has-side-ads .ad-rail{position:static;width:auto}
}