:root{
  --nb-surface:#fbfdff;
  --nb-paper:#edf3f7;
  --nb-ink:#101d2e;
  --nb-muted:#536276;
  --nb-muted-strong:#3d4c5f;
  --nb-line:#c7d3dd;
  --nb-cyan:#15b8d4;
  --nb-cyan-deep:#087e98;
  --nb-mint:#27b986;
  --nb-danger:#c84545;
  --nb-warn:#8a5a05;
  --nb-ok:#127252;
  --nb-shadow-sm:0 8px 24px #101d2e0f;
  --nb-shadow:0 22px 60px #273a4e1a;
  --nb-focus:0 0 0 4px #15b8d42e;
  --nb-font-mono:"SFMono-Regular",ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;
  --nb-radius:16px;
  --nb-radius-sm:10px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Inter,sans-serif;
  background:var(--nb-paper);
  background-image:linear-gradient(90deg,#101d2e07 1px,transparent 1px),linear-gradient(#101d2e07 1px,transparent 1px);
  background-size:32px 32px;
  color:var(--nb-ink);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--nb-cyan-deep);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
code,pre,.mono{font-family:var(--nb-font-mono)}

/* header */
.nav{position:sticky;top:0;z-index:50;background:#fbfdffe0;backdrop-filter:blur(12px);border-bottom:1px solid var(--nb-line)}
.nav-in{display:flex;align-items:center;gap:18px;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--nb-ink)}
.brand .logo{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--nb-cyan),var(--nb-mint));display:grid;place-items:center;color:#fff;font-size:14px;font-weight:800}
.nav-links{display:flex;gap:4px;margin-left:8px;flex-wrap:wrap}
.nav-links a{padding:7px 12px;border-radius:9px;color:var(--nb-muted-strong);font-size:14px;font-weight:500}
.nav-links a:hover{background:#15b8d414;text-decoration:none;color:var(--nb-cyan-deep)}
.nav-links a.active{background:var(--nb-ink);color:#fff}
.lang{margin-left:auto;display:flex;gap:2px;background:var(--nb-paper);border:1px solid var(--nb-line);border-radius:9px;padding:2px}
.lang button{border:0;background:transparent;padding:5px 10px;border-radius:7px;cursor:pointer;font-size:13px;color:var(--nb-muted);font-weight:600}
.lang button.on{background:#fff;color:var(--nb-cyan-deep);box-shadow:var(--nb-shadow-sm)}

/* hero */
.hero{padding:54px 0 34px}
.kicker{display:inline-block;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--nb-cyan-deep);font-weight:700;margin-bottom:14px}
h1{font-size:40px;line-height:1.12;letter-spacing:-.02em;margin-bottom:14px}
h1 .sub{display:block;font-size:19px;color:var(--nb-muted);font-weight:500;margin-top:12px;letter-spacing:0}
h2{font-size:24px;margin:34px 0 14px;letter-spacing:-.01em}
h3{font-size:17px;margin:18px 0 8px}
p.lead{color:var(--nb-muted);font-size:16px;max-width:640px}

/* cards */
.card{background:var(--nb-surface);border:1px solid var(--nb-line);border-radius:var(--nb-radius);box-shadow:var(--nb-shadow-sm);padding:22px}
.grid{display:grid;gap:16px}
.grid.c2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid.c3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid.c4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:900px){.grid.c3,.grid.c4{grid-template-columns:repeat(2,minmax(0,1fr))}h1{font-size:32px}}
@media(max-width:640px){.grid.c2,.grid.c3,.grid.c4{grid-template-columns:1fr}.nav-links{display:none}}

/* code blocks */
pre{background:#0c1725;color:#d6e6f2;border-radius:var(--nb-radius-sm);padding:16px;overflow:auto;font-size:13px;line-height:1.6;position:relative}
pre .cp{position:absolute;top:8px;right:8px;background:#ffffff1a;border:1px solid #ffffff24;color:#c5d0d8;border-radius:7px;padding:4px 10px;font-size:12px;cursor:pointer}
pre .cp:hover{background:#ffffff2e;color:#fff}
code.inline{background:#101d2e0f;border-radius:6px;padding:2px 6px;font-size:13px;color:var(--nb-cyan-deep)}

/* tabs */
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px}
.tabs button{border:1px solid var(--nb-line);background:var(--nb-surface);color:var(--nb-muted-strong);padding:8px 14px;border-radius:9px;cursor:pointer;font-size:14px;font-weight:600}
.tabs button:hover{border-color:var(--nb-cyan)}
.tabs button.active{background:var(--nb-ink);color:#fff;border-color:var(--nb-ink)}
.tab-panel{display:none}
.tab-panel.active{display:block}

/* model cards */
.model-card{background:var(--nb-surface);border:1px solid var(--nb-line);border-radius:var(--nb-radius);padding:18px;box-shadow:var(--nb-shadow-sm)}
.model-card .mtop{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--nb-line);padding-bottom:10px;margin-bottom:12px}
.model-card .mname{font-family:var(--nb-font-mono);font-weight:700;font-size:15px}
.badge{font-size:11px;font-weight:700;padding:3px 9px;border-radius:20px;background:#27b98620;color:var(--nb-ok)}
.price-row{display:flex;justify-content:space-between;font-size:13px;padding:3px 0;color:var(--nb-muted)}
.price-row b{color:var(--nb-ink);font-family:var(--nb-font-mono)}
.price-row em{color:var(--nb-ok);font-style:normal;text-decoration:line-through;opacity:.6;margin-right:6px;font-family:var(--nb-font-mono)}

/* status grid */
.status-now{display:flex;align-items:center;gap:10px}
.dot{width:10px;height:10px;border-radius:50%;flex:none}
.dot.green{background:var(--nb-mint)}.dot.amber{background:#e0a300}.dot.red{background:var(--nb-danger)}.dot.none{background:#c5d0d8}
.hist{display:flex;gap:1px;margin-top:6px}
.hist span{width:5px;height:18px;border-radius:1px;background:#c5d0d8}
.hist span.green{background:var(--nb-mint)}.hist span.amber{background:#e0a300}.hist span.red{background:var(--nb-danger)}

/* inputs */
input,select{width:100%;padding:11px 13px;border:1px solid var(--nb-line);border-radius:var(--nb-radius-sm);font-size:14px;background:var(--nb-surface);color:var(--nb-ink)}
input:focus,select:focus{outline:none;border-color:var(--nb-cyan);box-shadow:var(--nb-focus)}
label{font-size:13px;color:var(--nb-muted);font-weight:600;display:block;margin-bottom:6px}
.btn{background:var(--nb-ink);color:#fff;border:0;padding:11px 18px;border-radius:var(--nb-radius-sm);cursor:pointer;font-size:14px;font-weight:600}
.btn:hover{background:#1b2f47}
.btn.cyan{background:var(--nb-cyan-deep)}
.btn.ghost{background:transparent;color:var(--nb-cyan-deep);border:1px solid var(--nb-line)}

/* table */
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--nb-line)}
th{color:var(--nb-muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.04em}
td b[data-result=error]{color:var(--nb-danger)}
td b[data-result=ok]{color:var(--nb-ok)}

/* stat blocks */
.stat{background:var(--nb-surface);border:1px solid var(--nb-line);border-radius:var(--nb-radius);padding:18px}
.stat .v{font-size:28px;font-weight:800;letter-spacing:-.02em;font-family:var(--nb-font-mono)}
.stat .l{font-size:12px;color:var(--nb-muted);text-transform:uppercase;letter-spacing:.06em;margin-top:4px}
.stat .m{font-size:12px;color:var(--nb-cyan-deep);margin-top:2px}

/* bars */
.bars{display:flex;align-items:flex-end;gap:3px;height:90px;margin-top:10px}
.bars div{flex:1;background:linear-gradient(180deg,var(--nb-cyan),var(--nb-cyan-deep));border-radius:3px 3px 0 0;min-height:2px}

/* faq */
details{border:1px solid var(--nb-line);border-radius:var(--nb-radius-sm);padding:14px 16px;background:var(--nb-surface);margin-bottom:10px}
summary{cursor:pointer;font-weight:600;color:var(--nb-ink)}
details p{color:var(--nb-muted);margin-top:10px;font-size:14px}

/* footer */
footer{margin-top:50px;border-top:1px solid var(--nb-line);padding:28px 0;color:var(--nb-muted);font-size:13px}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.notice{background:#e0a30014;border:1px solid #e0a30040;color:var(--nb-warn);padding:12px 16px;border-radius:var(--nb-radius-sm);font-size:13px;margin:14px 0}
.muted{color:var(--nb-muted)}
.small{font-size:12px}
.center{text-align:center}
[hidden]{display:none!important}
.i18n-en{display:none}
body.en .i18n-ru{display:none}
body.en .i18n-en{display:initial}
body.en .i18n-en.block{display:block}