:root{
  --bg:#EEF1F0;--card:#FFFFFF;--card2:#F7F9F8;
  --ink:#0A0C0B;--muted:#565D5A;--soft:#8A918D;
  --dark:#0B0D0C;--dark2:#141715;--dink:#F2F4F1;--dmut:#9BA19C;
  --acid:#D6FF00;--acid-ink:#5F7000;
  --line:rgba(10,12,11,.10);--line2:rgba(10,12,11,.06);
  --dline:rgba(242,244,241,.12);--dline2:rgba(242,244,241,.07);
  --mono:JB,"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
  --sans:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --disp:SG,Inter,ui-sans-serif,system-ui,sans-serif;
  --r:22px;--rs:14px;
  --shadow:0 2px 6px rgba(10,12,11,.04),0 24px 60px -28px rgba(10,12,11,.16);
  --shadow-sm:0 1px 3px rgba(10,12,11,.06);
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden}
::selection{background:var(--acid);color:#0A0C0B}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}
.page{position:relative;z-index:1;max-width:1180px;margin:0 auto;padding:0 20px}
#sprog{position:fixed;top:0;left:0;height:2.5px;background:var(--ink);width:0;z-index:60}

/* топбар */
.topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 4px;background:rgba(238,241,240,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line2)}
.wordmark{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.02em;font-size:17px;font-family:var(--disp)}
.wordmark .dot{width:11px;height:11px;border-radius:3.5px;background:var(--ink);position:relative;flex:none}
.wordmark .dot::after{content:"";position:absolute;inset:3px;border-radius:2px;background:var(--acid)}
.wordmark small{display:block;font-weight:500;font-size:10.5px;color:var(--soft);letter-spacing:.14em;text-transform:uppercase;line-height:1;font-family:var(--sans)}
.tright{display:flex;align-items:center;gap:8px}
.lang{display:flex;border:1px solid var(--line);background:var(--card);border-radius:999px;padding:3px}
.lang button{border:0;background:none;font-family:var(--mono);font-size:11.5px;font-weight:700;padding:5px 10px;border-radius:99px;color:var(--muted)}
.lang button.on{background:var(--ink);color:#fff}
.tg-btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:13.5px;padding:10px 17px;border-radius:999px;background:var(--ink);color:#fff;transition:transform .15s ease,box-shadow .15s ease;white-space:nowrap}
.tg-btn:hover{transform:translateY(-1px);box-shadow:0 10px 26px -10px rgba(10,12,11,.5)}
@media(max-width:520px){.tg-btn .l{display:none}.tg-btn{padding:10px 13px}}

/* кнопки */
.btn{position:relative;display:inline-flex;align-items:center;gap:9px;font-weight:800;font-size:15px;padding:15px 26px;border-radius:14px;transition:transform .16s ease,box-shadow .16s ease;overflow:hidden;cursor:pointer;border:0;font-family:var(--sans)}
.btn-main{background:var(--ink);color:#fff;box-shadow:0 12px 30px -12px rgba(10,12,11,.5)}
.btn-main:hover{transform:translateY(-2px);box-shadow:0 18px 40px -12px rgba(10,12,11,.55)}
.btn-main::after{content:"";position:absolute;top:0;left:-80%;width:50%;height:100%;background:linear-gradient(100deg,transparent,rgba(214,255,0,.35),transparent);transform:skewX(-20deg);animation:shine 3.6s ease-in-out infinite}
@keyframes shine{0%,60%{left:-80%}100%{left:130%}}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid rgba(10,12,11,.22)}
.btn-ghost:hover{border-color:var(--ink);background:var(--card);transform:translateY(-2px)}
.btn-acid{background:var(--acid);color:#0A0C0B;box-shadow:0 14px 34px -12px rgba(214,255,0,.5)}
.btn-acid:hover{transform:translateY(-2px)}

.kicker{display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink);border:1px solid var(--line);background:var(--card);padding:8px 14px;border-radius:999px;margin-bottom:22px}
.kicker i{width:7px;height:7px;border-radius:50%;background:var(--acid);outline:1.5px solid var(--ink)}
@keyframes pulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(.75);opacity:.65}}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:12px;display:flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:26px;height:3px;background:var(--acid);outline:1px solid rgba(10,12,11,.2)}
h1,h2,h3{text-wrap:balance}
h2{font-family:var(--disp);font-size:clamp(27px,4vw,44px);letter-spacing:-.025em;line-height:1.06;font-weight:700;margin:0 0 14px}
.sub{color:var(--muted);max-width:640px;margin:0 0 30px;font-size:16.5px}
.footer{padding:26px 4px 40px;color:var(--soft);font-size:12.5px;font-family:var(--mono);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;border-top:1px solid var(--line2)}
.footer nav{display:flex;gap:16px}.footer nav a{color:var(--ink);font-weight:700}

.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);background:var(--ink);color:#fff;border-radius:999px;padding:12px 18px;font-size:14px;font-weight:600;
  opacity:0;pointer-events:none;transition:opacity .25s,transform .25s;z-index:70;max-width:calc(100% - 40px);text-align:center}
.toast.on{opacity:1;transform:translate(-50%,0)}
.rv{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.8,.2,1)}
.rv.on{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}.rv{opacity:1;transform:none}}

/* ===== тёмная тема (html[data-theme=dark]) ===== */
[data-theme=dark]{
  --bg:#0A0C0B;--card:#121513;--card2:#181C1A;
  --ink:#F2F4F1;--muted:#A3AAA5;--soft:#6F7772;
  --dark:#151917;--dark2:#101311;--dink:#F2F4F1;--dmut:#9BA19C;
  --acid-ink:#D6FF00;
  --line:rgba(242,244,241,.10);--line2:rgba(242,244,241,.06);
  --shadow:0 2px 6px rgba(0,0,0,.3),0 24px 60px -28px rgba(0,0,0,.7);
  --shadow-sm:0 1px 3px rgba(0,0,0,.4);
  color-scheme:dark;
}
[data-theme=dark] body{background:radial-gradient(1200px 600px at 80% -10%,rgba(214,255,0,.06),transparent 60%),var(--bg)}
[data-theme=dark] .topbar{background:rgba(10,12,11,.8)}
[data-theme=dark] #sprog{background:var(--acid)}
[data-theme=dark] .wordmark .dot{background:var(--acid)}
[data-theme=dark] .wordmark .dot::after{background:#0A0C0B}
[data-theme=dark] .lang button.on{background:var(--acid);color:#0A0C0B}
[data-theme=dark] .tg-btn,[data-theme=dark] .btn-main{background:var(--acid);color:#0A0C0B;box-shadow:0 12px 30px -12px rgba(214,255,0,.35)}
[data-theme=dark] .btn-main::after{background:linear-gradient(100deg,transparent,rgba(255,255,255,.45),transparent)}
[data-theme=dark] .btn-ghost{border-color:rgba(242,244,241,.22)}
[data-theme=dark] .btn-ghost:hover{border-color:var(--ink);background:var(--card)}
[data-theme=dark] .kicker i{outline-color:#0A0C0B}
[data-theme=dark] .eyebrow::before{outline:0}
[data-theme=dark] .theme i{border-color:var(--acid);background:linear-gradient(90deg,var(--acid) 50%,transparent 50%)}
[data-theme=dark] .toast{background:var(--acid);color:#0A0C0B}
[data-theme=dark] ::selection{background:var(--acid);color:#0A0C0B}