:root{
  --bg:#0b0e13; --bg2:#10141d; --card:#151a25; --card2:#1b2130;
  --line:#242c3c; --line2:#313b50;
  --txt:#e9edf5; --mut:#8d97ab; --mut2:#6b7488;
  --acc:#2f7bff; --acc2:#63a4ff; --ok:#3ddc84;
  --rad:14px;
  --wrap:1120px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg); color:var(--txt);
  font-family:"Segoe UI",Roboto,"Helvetica Neue",Arial,system-ui,sans-serif;
  font-size:17px; line-height:1.65; -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--acc2);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}

/* ---------- two-column layout ---------- */
.layout{
  max-width:var(--wrap);margin:0 auto;padding:0 20px;
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;
  align-items:start;
}
.content{min-width:0}
.content section{padding:52px 0;border-bottom:1px solid var(--line)}
.content section:last-child{border-bottom:none}
.content .wrap{max-width:none;margin:0;padding:0}

/* ---------- ad rail ---------- */
.rail{
  align-self:stretch;
  padding:36px 0 52px;
  display:flex;flex-direction:column;gap:16px;
}
/* последний баннер едет за скроллом, чтобы реклама была видна всю статью */
.rail > .bnr:last-child{position:sticky;top:84px}
.rail-title{
  font-size:11.5px;letter-spacing:1.2px;text-transform:uppercase;
  color:var(--mut2);font-weight:800;padding-bottom:2px;
}
.bnr{
  display:block;position:relative;border-radius:12px;overflow:hidden;
  border:1px solid var(--line);background:var(--card);
  transition:.2s;line-height:0;
}
.bnr:hover{
  border-color:var(--acc);transform:translateY(-3px);text-decoration:none;
  box-shadow:0 12px 30px -14px rgba(47,123,255,.75);
}
.bnr img{width:100%;height:auto;display:block}
.bnr-label{
  position:absolute;top:8px;right:8px;
  background:rgba(11,14,19,.75);color:var(--mut);
  font-size:10.5px;font-weight:700;letter-spacing:.6px;text-transform:uppercase;
  padding:3px 8px;border-radius:5px;line-height:1.4;backdrop-filter:blur(4px);
}
.bnr-slot{display:none;margin:28px 0}
.bnr-slot .bnr{max-width:520px}

/* ---------- header ---------- */
.hdr{
  position:sticky;top:0;z-index:50;
  background:rgba(11,14,19,.86);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.hdr .wrap{display:flex;align-items:center;gap:26px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:.5px;color:var(--txt)}
.logo:hover{text-decoration:none}
.logo .mark{
  width:34px;height:34px;border-radius:9px;flex:none;
  background:linear-gradient(135deg,var(--acc),var(--acc2));
  display:grid;place-items:center;color:#12161f;font-size:18px;font-weight:900;
}
.logo b{color:var(--acc2)}
.nav{display:flex;gap:22px;margin-left:auto;font-size:15px}
.nav a{color:var(--mut);font-weight:600}
.nav a:hover{color:var(--txt);text-decoration:none}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--line2);border-radius:9px;
  width:40px;height:38px;color:var(--txt);font-size:18px;cursor:pointer}

/* ---------- hero ---------- */
.hero{
  position:relative;padding:64px 0 52px;
  background:
    radial-gradient(900px 380px at 15% -10%,rgba(47,123,255,.22),transparent 60%),
    radial-gradient(700px 400px at 88% 0%,rgba(74,124,255,.16),transparent 62%),
    linear-gradient(180deg,#0d1119,var(--bg));
  border-bottom:1px solid var(--line);
}
.hero:after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 85%);
  mask-image:linear-gradient(180deg,#000,transparent 85%);
}
.hero .wrap{position:relative;z-index:1}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,1fr) 420px;
  gap:44px;align-items:center;
}
.hero-text{min-width:0}
.hero-bnr .bnr{border-color:var(--line2)}
.hero-bnr .bnr:hover{border-color:var(--acc)}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(47,123,255,.13);border:1px solid rgba(47,123,255,.35);
  color:var(--acc2);font-size:13px;font-weight:700;letter-spacing:.4px;
  padding:6px 13px;border-radius:100px;text-transform:uppercase;
}
h1{
  font-size:clamp(30px,5vw,50px);line-height:1.12;font-weight:900;
  letter-spacing:-.5px;margin:18px 0 16px;max-width:18ch;
}
h1 span{background:linear-gradient(120deg,var(--acc),var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:19px;color:var(--mut);max-width:64ch}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{
  background:var(--card);border:1px solid var(--line);border-radius:100px;
  padding:7px 15px;font-size:14px;color:var(--mut);font-weight:600;
}
.chip b{color:var(--txt)}
.btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.btn{
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 26px;border-radius:12px;font-weight:800;font-size:16px;
  border:1px solid transparent;cursor:pointer;transition:.18s;
  font-family:inherit;
}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn-p{background:linear-gradient(135deg,var(--acc),var(--acc2));color:#14181f;box-shadow:0 8px 24px -10px rgba(255,140,40,.8)}
.btn-s{background:var(--card);border-color:var(--line2);color:var(--txt)}

/* ---------- sections ---------- */
section{padding:56px 0;border-bottom:1px solid var(--line)}
section:last-of-type{border-bottom:none}
h2{
  font-size:clamp(24px,3.4vw,34px);font-weight:900;letter-spacing:-.3px;
  margin-bottom:12px;line-height:1.2;
}
h2 .n{color:var(--acc);font-size:.7em;vertical-align:.15em;margin-right:8px}
h3{font-size:21px;font-weight:800;margin:26px 0 12px}
.sub{color:var(--mut);max-width:72ch;margin-bottom:26px}
p{margin-bottom:14px;color:#cbd3e0}
p:last-child{margin-bottom:0}

/* ---------- code table ---------- */
.tbl-wrap{border:1px solid var(--line);border-radius:var(--rad);overflow:hidden;background:var(--card)}
.tbl-scroll{overflow-x:auto}
table{width:100%;border-collapse:collapse;min-width:520px}
thead th{
  background:var(--card2);text-align:left;font-size:12.5px;letter-spacing:.9px;
  text-transform:uppercase;color:var(--mut);font-weight:800;padding:13px 18px;
  border-bottom:1px solid var(--line);
}
tbody td{padding:13px 18px;border-bottom:1px solid var(--line);vertical-align:middle;font-size:16px}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:rgba(255,255,255,.022)}
.code{
  font-family:Consolas,"SF Mono",ui-monospace,monospace;font-weight:800;
  color:var(--acc2);font-size:15.5px;letter-spacing:.6px;white-space:nowrap;
}
td.rew{color:#cbd3e0}
.tag{display:inline-block;font-size:11.5px;font-weight:800;letter-spacing:.5px;text-transform:uppercase;
  padding:3px 9px;border-radius:6px;margin-left:8px;vertical-align:2px}
.tag.new{background:rgba(61,220,132,.15);color:var(--ok);border:1px solid rgba(61,220,132,.3)}
.tag.hot{background:rgba(47,123,255,.15);color:var(--acc2);border:1px solid rgba(47,123,255,.32)}
.copy{
  background:var(--card2);border:1px solid var(--line2);color:var(--mut);
  border-radius:8px;padding:6px 13px;font-size:13px;font-weight:700;cursor:pointer;
  transition:.15s;white-space:nowrap;font-family:inherit;
}
.copy:hover{border-color:var(--acc);color:var(--acc2)}
.copy.done{border-color:var(--ok);color:var(--ok)}
td.act{text-align:right;width:1%}

/* ---------- note ---------- */
.note{
  display:flex;gap:14px;background:rgba(47,123,255,.07);
  border:1px solid rgba(47,123,255,.25);border-left:3px solid var(--acc);
  border-radius:12px;padding:16px 18px;margin-top:22px;
}
.note .ic{font-size:20px;line-height:1.3;flex:none}
.note p{margin:0;font-size:15.5px;color:#c5cddb}

/* ---------- steps ---------- */
.cols{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--rad);padding:26px}
.panel h3{margin-top:0;display:flex;align-items:center;gap:10px;font-size:19px}
.panel h3 i{
  width:28px;height:28px;border-radius:8px;flex:none;font-style:normal;
  background:linear-gradient(135deg,var(--acc),var(--acc2));color:#14181f;
  display:grid;place-items:center;font-weight:900;font-size:14px;
}
ol.steps{list-style:none;counter-reset:s;margin-top:6px}
ol.steps li{counter-increment:s;position:relative;padding-left:38px;margin-bottom:15px;color:#c5cddb;font-size:16px}
ol.steps li:last-child{margin-bottom:0}
ol.steps li:before{
  content:counter(s);position:absolute;left:0;top:1px;
  width:26px;height:26px;border-radius:50%;background:var(--card2);
  border:1px solid var(--line2);color:var(--acc2);font-weight:800;font-size:13px;
  display:grid;place-items:center;
}

/* ---------- source cards ---------- */
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--rad);
  padding:24px;transition:.2s;
}
.card:hover{border-color:var(--line2);transform:translateY(-3px)}
.card .ic{
  width:44px;height:44px;border-radius:11px;display:grid;place-items:center;
  background:var(--card2);border:1px solid var(--line2);font-size:21px;margin-bottom:14px;
}
.card h3{margin:0 0 8px;font-size:18px}
.card p{font-size:15.5px;color:var(--mut);margin:0}

/* ---------- rules ---------- */
ul.rules{list-style:none;display:grid;gap:12px}
ul.rules li{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:16px 18px 16px 50px;position:relative;color:#c5cddb;font-size:16px;
}
ul.rules li:before{
  content:"\2713";position:absolute;left:17px;top:15px;
  color:var(--acc);font-weight:900;font-size:17px;
}

/* ---------- faq ---------- */
.faq{display:grid;gap:12px}
details{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  overflow:hidden;transition:.2s;
}
details[open]{border-color:var(--line2)}
summary{
  padding:18px 52px 18px 20px;cursor:pointer;font-weight:700;font-size:17px;
  position:relative;list-style:none;
}
summary::-webkit-details-marker{display:none}
summary:after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  color:var(--acc);font-size:24px;font-weight:400;line-height:1;transition:.2s;
}
details[open] summary:after{transform:translateY(-50%) rotate(45deg)}
details .ans{padding:0 20px 20px;color:var(--mut);font-size:16px}

/* ---------- toc ---------- */
.toc{background:var(--card);border:1px solid var(--line);border-radius:var(--rad);padding:22px 24px;margin-top:32px}
.toc h3{margin:0 0 12px;font-size:16px;text-transform:uppercase;letter-spacing:.9px;color:var(--mut)}
.toc ol{margin-left:20px;color:var(--mut)}
.toc li{margin-bottom:7px}
.toc a{color:#cbd3e0;font-weight:600}

/* ---------- footer ---------- */
.ftr{background:var(--bg2);border-top:1px solid var(--line);padding:42px 0 34px;font-size:15px}
.ftr-top{display:flex;flex-wrap:wrap;gap:30px;justify-content:space-between;padding-bottom:26px;border-bottom:1px solid var(--line)}
.ftr-col{max-width:420px}
.ftr-col p{color:var(--mut);font-size:14.5px;margin-top:12px}
.ftr-nav{display:flex;flex-direction:column;gap:9px}
.ftr-nav a{color:var(--mut);font-weight:600}
.ftr-bot{padding-top:22px;color:var(--mut2);font-size:13.5px;line-height:1.7}
.ftr-bot a{color:var(--mut)}

/* ---------- toast ---------- */
#toast{
  position:fixed;left:50%;bottom:30px;transform:translate(-50%,20px);
  background:var(--card2);border:1px solid var(--ok);color:var(--ok);
  padding:12px 22px;border-radius:11px;font-weight:700;font-size:15px;
  opacity:0;pointer-events:none;transition:.25s;z-index:99;
}
#toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- article page ---------- */
.doc{padding:48px 0 60px;max-width:800px}
.doc h1{font-size:clamp(26px,4vw,38px);max-width:none;margin-bottom:24px}
.doc h2{font-size:23px;margin:34px 0 12px}
.doc p,.doc li{color:#c5cddb;font-size:16.5px}
.doc ul,.doc ol{margin:0 0 16px 22px}
.doc li{margin-bottom:8px}
.back{display:inline-block;margin-bottom:22px;color:var(--mut);font-weight:600;font-size:15px}

@media(max-width:1080px){
  .layout{grid-template-columns:minmax(0,1fr) 280px;gap:30px}
  .hero-grid{grid-template-columns:minmax(0,1fr) 340px;gap:32px}
}
@media(max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-bnr{max-width:520px}
  .layout{display:block;padding:0 20px}
  .rail{display:none}
  .bnr-slot{display:block}
  .bnr-slot .bnr{margin:0 auto}
}
@media(max-width:860px){
  .cols,.grid{grid-template-columns:1fr}
}
@media(max-width:720px){
  body{font-size:16px}
  .nav{
    display:none;position:absolute;top:64px;left:0;right:0;
    flex-direction:column;gap:0;background:var(--bg2);
    border-bottom:1px solid var(--line);padding:8px 20px 16px;
  }
  .nav.open{display:flex}
  .nav a{padding:11px 0;border-bottom:1px solid var(--line)}
  .burger{display:block}
  .hero{padding:44px 0 40px}
  section{padding:44px 0}
  .btn{width:100%;justify-content:center}
  .panel{padding:20px}
  td.act .copy{padding:6px 10px}
}