/* =========================================================================
   СИСТЕМА / NK — Descent into the System
   Production stylesheet. Vanilla CSS, no preprocessors.
   Author: senior frontend build
   ========================================================================= */

/* ----------------------------- DESIGN TOKENS ---------------------------- */
:root{
  /* depth-graded backgrounds (interpolated by JS on scroll) */
  --bg-0:#08090B;
  --bg-1:#0B0C0F;
  --bg-2:#0E1013;
  --bg-3:#121317;
  --bg-deep:#0A0709;
  --bg-core:#040506;

  --graphite:#2A2D33;
  --graphite-2:#3A3E45;
  --line:#1B1D22;
  --line-2:#242730;

  --red:#FF2A2A;
  --red-deep:#C8102E;
  --red-glow:rgba(255,42,42,.55);

  --text:#ECECEC;
  --text-2:#7A7D85;
  --text-3:#4A4D54;
  --text-4:#33363C;

  --disp:'Space Grotesk',system-ui,-apple-system,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,'SFMono-Regular',monospace;

  --ease:cubic-bezier(.22,.8,.16,1);
  --ease-in:cubic-bezier(.5,0,.75,0);
  --gutter:clamp(22px,7vw,120px);
  --wire-x:clamp(18px,3.4vw,42px);
}

/* ------------------------------- RESET ---------------------------------- */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:auto;scrollbar-width:none;-webkit-text-size-adjust:100%}
html::-webkit-scrollbar{display:none}
body{
  background:var(--bg-0);
  color:var(--text);
  font-family:var(--disp);
  line-height:1.4;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
@media (pointer:fine){body{cursor:none}}
body.is-loading{overflow:hidden;height:100vh}
body.no-scroll{overflow:hidden}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;border:none;background:none;color:inherit}
::selection{background:var(--red);color:#000}

/* ------------------------- ATMOSPHERE LAYERS ---------------------------- */
.bg-field{position:fixed;inset:0;z-index:-3;background:var(--bg-0)}
.vignette{position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:radial-gradient(ellipse 120% 90% at 50% 38%,transparent 42%,rgba(0,0,0,.62) 100%)}
.grain{position:fixed;inset:-50%;z-index:9990;pointer-events:none;opacity:.045;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  will-change:transform}
.scanlines{position:fixed;inset:0;z-index:9991;pointer-events:none;opacity:0;
  background:repeating-linear-gradient(0deg,rgba(0,0,0,.4) 0 1px,transparent 1px 3px)}

/* dive speed-lines overlay (toggled while diving) */
.dive-fx{position:fixed;inset:0;z-index:9970;pointer-events:none;opacity:0;
  background:
   linear-gradient(90deg,var(--red-glow),transparent 18%),
   linear-gradient(-90deg,var(--red-glow),transparent 18%);
  transition:opacity .18s}
body.diving .dive-fx{opacity:.5}
body.diving main{filter:blur(1.4px);transition:filter .2s}

/* ------------------------------- WIRE ----------------------------------- */
.wire{position:fixed;left:var(--wire-x);top:0;bottom:0;width:1px;z-index:60;pointer-events:none}
.wire::before{content:"";position:absolute;inset:0;background:var(--line-2)}
.wire-fill{position:absolute;left:0;top:0;width:1px;height:0;
  background:linear-gradient(var(--red-deep),var(--red));box-shadow:0 0 10px var(--red-glow)}
.wire-spark{position:absolute;left:-3px;width:7px;height:7px;border-radius:50%;
  background:var(--red);box-shadow:0 0 14px 2px var(--red-glow);opacity:0;transform:translateY(-50%)}

/* ----------------------------- PRELOADER -------------------------------- */
.boot{position:fixed;inset:0;z-index:9995;background:#000;display:grid;place-items:center}
.boot-inner{width:min(440px,82vw);text-align:left}
.persistent-core{position:fixed;top:50%;left:50%;width:12px;height:12px;border-radius:50%;
  background:var(--red);z-index:9997;transform:translate(-50%,-50%);box-shadow:0 0 0 var(--red-glow)}
.boot-log{font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;color:var(--text-2);
  line-height:2.1;min-height:200px}
.boot-log .row{display:flex;justify-content:space-between;gap:18px;opacity:0}
.boot-log .row b{color:var(--text);font-weight:500}
.boot-log .row .ok{color:var(--red)}
.boot-meter{margin-top:18px;height:1px;background:var(--line-2);position:relative;overflow:hidden}
.boot-meter i{position:absolute;left:0;top:0;height:100%;width:0;background:var(--red);
  box-shadow:0 0 10px var(--red-glow)}
.boot-pct{margin-top:14px;font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--text-3)}

/* ignition shutters */
.shutter{position:fixed;left:0;right:0;z-index:9994;background:#000;pointer-events:none}
.shutter.top{top:0;height:50vh;transform-origin:top}
.shutter.bot{bottom:0;height:50vh;transform-origin:bottom}
.flash{position:fixed;inset:0;z-index:9993;background:var(--red);transform:scaleX(0);
  transform-origin:left;pointer-events:none;mix-blend-mode:screen}

/* ------------------------------ CURSOR ---------------------------------- */
.cursor,.cursor-ring,.cursor-label,.heat{display:none}
@media (pointer:fine){
  .cursor{display:block;position:fixed;top:0;left:0;width:7px;height:7px;border-radius:50%;
    background:var(--red);z-index:9999;pointer-events:none;transform:translate(-50%,-50%);
    transition:width .28s var(--ease),height .28s var(--ease),background .28s}
  .cursor-ring{display:block;position:fixed;top:0;left:0;width:38px;height:38px;border:1px solid var(--graphite-2);
    border-radius:50%;z-index:9998;pointer-events:none;transform:translate(-50%,-50%);
    transition:width .32s var(--ease),height .32s var(--ease),border-color .3s,opacity .3s}
  .cursor-label{display:block;position:fixed;top:0;left:0;z-index:9999;pointer-events:none;
    font-family:var(--mono);font-size:9px;letter-spacing:.18em;color:var(--red);
    transform:translate(-50%,-50%);opacity:0;transition:opacity .25s;text-transform:uppercase;white-space:nowrap}
  .heat{display:block;position:fixed;top:0;left:0;z-index:9985;pointer-events:none}
  body.cur-hover .cursor{width:0;height:0}
  body.cur-hover .cursor-ring{width:66px;height:66px;border-color:var(--red)}
  body.cur-hover .cursor-label{opacity:1}
  body.cur-drag .cursor-ring{width:54px;height:54px;border-color:var(--red);border-style:dashed}
}

/* -------------------------------- NAV ----------------------------------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:300;display:flex;justify-content:space-between;
  align-items:center;padding:24px var(--gutter);mix-blend-mode:difference}
.nav-logo{font-family:var(--mono);font-size:12px;letter-spacing:.22em;color:#fff;font-weight:500}
.nav-logo b{color:var(--red);font-weight:500}
.nav-right{display:flex;align-items:center;gap:22px}
.nav-status{font-family:var(--mono);font-size:10px;letter-spacing:.16em;color:#fff;
  display:flex;align-items:center;gap:8px}
.nav-status .dot{width:6px;height:6px;border-radius:50%;background:var(--red);
  animation:pulse 1.7s infinite ease-in-out}
.nav-status .clock{color:var(--red)}
.nav-map{font-family:var(--mono);font-size:10px;letter-spacing:.16em;color:#fff;
  display:flex;align-items:center;gap:8px;pointer-events:auto}
@media (pointer:fine){.nav-map{cursor:none}}
.nav-map svg{width:14px;height:14px}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.2}}

/* sound toggle */
.snd{position:fixed;bottom:26px;left:var(--gutter);z-index:300;font-family:var(--mono);
  font-size:10px;letter-spacing:.16em;color:var(--text-3);display:flex;align-items:center;gap:9px;
  pointer-events:auto}
@media (pointer:fine){.snd{cursor:none}}
.snd .eq{display:flex;gap:2px;align-items:flex-end;height:11px}
.snd .eq i{width:2px;background:var(--text-3);height:4px}
.snd.on .eq i{background:var(--red);animation:eq 1s infinite ease-in-out}
.snd .eq i:nth-child(2){animation-delay:.2s}
.snd .eq i:nth-child(3){animation-delay:.4s}
@keyframes eq{0%,100%{height:3px}50%{height:11px}}

/* --------------------------- DEPTH NAV (right) -------------------------- */
.depth{position:fixed;right:clamp(16px,3vw,40px);top:50%;transform:translateY(-50%);z-index:300;
  display:flex;flex-direction:column;align-items:flex-end;gap:10px}
.depth-cap{font-family:var(--mono);font-size:9px;letter-spacing:.16em;color:var(--text-3);
  mix-blend-mode:difference}
.depth-val{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:#fff;mix-blend-mode:difference}
.depth-track{position:relative;width:2px;height:200px;background:var(--line-2);margin-top:8px}
.depth-fill{position:absolute;left:0;top:0;width:2px;height:0;background:var(--red);
  box-shadow:0 0 8px var(--red-glow)}
.depth-knob{position:absolute;left:-3px;top:0;width:8px;height:8px;border-radius:50%;background:var(--red);
  box-shadow:0 0 10px var(--red-glow)}
.depth-mark{position:absolute;left:-22px;width:14px;height:1px;background:var(--graphite-2);
  pointer-events:auto;transition:background .25s}
@media (pointer:fine){.depth-mark{cursor:none}}
.depth-mark::after{content:attr(data-name);position:absolute;right:20px;top:-6px;white-space:nowrap;
  font-family:var(--mono);font-size:9px;letter-spacing:.14em;color:var(--text-3);opacity:0;
  transform:translateX(8px);transition:.28s var(--ease);text-transform:uppercase;pointer-events:none}
.depth:hover .depth-mark{background:var(--graphite-2)}
.depth-mark:hover{background:var(--red);width:22px;left:-30px}
.depth-mark:hover::after{opacity:1;transform:translateX(0);color:var(--red)}
.depth-mark.active{background:var(--red)}

/* ----------------------------- SECTIONS --------------------------------- */
main{position:relative;z-index:1}
.layer{position:relative;padding-inline:var(--gutter)}
.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.26em;color:var(--text-2);
  text-transform:uppercase;display:inline-flex;align-items:center;gap:13px}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--red)}

/* split-reveal mask wrapper */
.reveal{overflow:hidden}
.reveal>*{display:block}

/* L1 — SURFACE */
.surface{min-height:100vh;display:flex;flex-direction:column;justify-content:center;padding-block:14vh}
.surface .eyebrow{margin-bottom:30px}
.manifest{font-weight:700;line-height:.95;letter-spacing:-.035em;
  font-size:clamp(2.6rem,8.4vw,7.6rem);max-width:16ch}
.manifest .ln{display:block;overflow:hidden}
.manifest .ln>span{display:inline-block;will-change:transform}
.manifest em{font-style:normal;color:var(--red)}
.surface-sub{margin-top:34px;max-width:48ch;font-size:clamp(.95rem,1.4vw,1.15rem);
  color:var(--text-2);line-height:1.7}
.surface-meta{margin-top:40px;display:flex;flex-wrap:wrap;gap:10px 26px;
  font-family:var(--mono);font-size:12px;letter-spacing:.05em;color:var(--text-2)}
.surface-meta span{display:flex;align-items:center;gap:9px}
.surface-meta span::before{content:"";width:4px;height:4px;background:var(--red);border-radius:50%}
.scroll-hint{position:absolute;left:var(--gutter);bottom:38px;font-family:var(--mono);
  font-size:10px;letter-spacing:.2em;color:var(--text-2);display:flex;align-items:center;gap:12px}
.scroll-hint .bar{width:1px;height:36px;background:var(--line-2);position:relative;overflow:hidden}
.scroll-hint .bar::after{content:"";position:absolute;top:0;left:0;width:1px;height:14px;
  background:var(--red);animation:drop 1.9s infinite}
@keyframes drop{0%{transform:translateY(-14px)}100%{transform:translateY(36px)}}

/* L2 — THRESHOLD */
.threshold{min-height:92vh;display:flex;align-items:center}
.threshold-inner{max-width:26ch}
.threshold .num{font-family:var(--mono);font-size:11px;color:var(--red);letter-spacing:.2em;
  margin-bottom:26px;display:block}
.threshold h2{font-size:clamp(1.6rem,4.6vw,3.6rem);font-weight:500;line-height:1.16;letter-spacing:-.02em}
.threshold h2 i{font-style:normal;color:var(--text-4)}

/* L3 — MODULES */
.modules{padding-block:10vh}
.modules-head{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;
  gap:24px;margin-bottom:9vh}
.modules-head h2{font-size:clamp(1.4rem,3.2vw,2.5rem);font-weight:500;letter-spacing:-.02em;max-width:18ch}
.module{position:relative;border-top:1px solid var(--line);display:grid;
  grid-template-columns:92px 1.05fr 1.05fr;align-items:center;gap:clamp(16px,4vw,60px);
  padding-block:clamp(30px,5.4vh,60px)}
.module:last-child{border-bottom:1px solid var(--line)}
.module-num{font-family:var(--mono);font-size:13px;color:var(--text-4);letter-spacing:.08em;
  transition:color .4s var(--ease)}
.module-title{font-size:clamp(1.7rem,4.4vw,3.3rem);font-weight:700;letter-spacing:-.03em;line-height:1;
  transition:transform .55s var(--ease)}
.module-desc{font-family:var(--mono);font-size:11.5px;font-weight:400;letter-spacing:.04em;
  color:var(--text-2);margin-top:16px;max-width:36ch;line-height:1.8}
.module-price{display:inline-block;margin-top:14px;font-family:var(--mono);font-size:10px;
  letter-spacing:.1em;color:var(--text-3);border:1px solid var(--line);padding:5px 9px;border-radius:2px}
.module-viz{position:relative;height:186px;border:1px solid var(--line);border-radius:2px;
  background:rgba(255,255,255,.012);overflow:hidden}
.module-viz svg{width:100%;height:100%}
.module:hover .module-num{color:var(--red)}
.module:hover .module-title{transform:translateX(16px)}
.viz-stroke{stroke:var(--graphite-2);stroke-width:1;fill:none}
.viz-accent{stroke:var(--red);stroke-width:1.4;fill:none}
.viz-dot{fill:var(--red)}
.viz-soft{fill:var(--graphite)}

/* L4 — ENGINE ROOM */
.engine{overflow:hidden}
.engine-head{padding-block:9vh 0}
.engine-head .eyebrow{margin-bottom:24px}
.engine-head h2{font-size:clamp(1.6rem,4vw,3rem);font-weight:500;letter-spacing:-.02em;max-width:18ch}
.engine-hint{font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--text-3);margin-top:30px}
.engine-stage{height:100vh;display:flex;align-items:center}
.engine-track{display:flex;gap:clamp(20px,3vw,40px);padding-left:var(--gutter);
  padding-right:var(--gutter);will-change:transform}
.case{flex:0 0 clamp(300px,60vw,620px);min-height:64vh;border:1px solid var(--line);border-radius:3px;
  padding:clamp(26px,3.2vw,46px);position:relative;overflow:hidden;display:flex;flex-direction:column;
  justify-content:space-between;
  background:linear-gradient(158deg,rgba(255,255,255,.024),rgba(255,255,255,.004));
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  transform-style:preserve-3d;transition:border-color .4s}
.case::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--red-deep),transparent);opacity:.5}
.case:hover{border-color:var(--graphite)}
.case-id{font-family:var(--mono);font-size:11px;color:var(--red);letter-spacing:.2em}
.case h3{font-size:clamp(1.5rem,3vw,2.4rem);font-weight:700;letter-spacing:-.025em;line-height:1.04;
  margin-top:18px;max-width:14ch}
.case-desc{font-family:var(--mono);font-size:11.5px;line-height:1.95;color:var(--text-2);
  max-width:44ch;margin-top:22px}
.case-stats{display:flex;gap:clamp(24px,4vw,54px);margin-top:auto;padding-top:34px}
.case-stat .v{font-size:clamp(1.8rem,4vw,2.7rem);font-weight:700;letter-spacing:-.03em;color:#fff;line-height:1}
.case-stat .v .u{color:var(--red)}
.case-stat .l{font-family:var(--mono);font-size:9.5px;letter-spacing:.12em;color:var(--text-3);
  margin-top:11px;text-transform:uppercase}
.case-stack{display:flex;flex-wrap:wrap;gap:6px;margin-top:26px}
.tag{font-family:var(--mono);font-size:9px;letter-spacing:.07em;color:var(--text-2);
  border:1px solid var(--line);padding:5px 9px;border-radius:2px}

/* — MOCKUPS — */
.case-mockup{width:100%;aspect-ratio:16/10;border:1px solid var(--line);border-radius:4px;
  overflow:hidden;margin-bottom:clamp(18px,2.5vw,30px);position:relative;
  background:rgba(0,0,0,.45);backdrop-filter:blur(6px)}
.mock-header{display:flex;align-items:center;gap:6px;padding:8px 12px;
  background:rgba(255,255,255,.03);border-bottom:1px solid var(--line)}
.mock-dot{width:7px;height:7px;border-radius:50%}
.mock-dot.r{background:#ff5f57}.mock-dot.y{background:#febc2e}.mock-dot.g{background:#28c840}
.mock-title{font-family:var(--mono);font-size:9px;color:var(--text-3);letter-spacing:.06em;margin-left:8px}
/* Bot mockup */
.mockup-bot .mock-msg{padding:6px 12px;font-family:var(--mono);font-size:9px;line-height:1.4}
.mock-msg.out{display:flex;justify-content:flex-end}
.mock-msg.out span{background:rgba(255,255,255,.07);color:var(--text-2);padding:5px 10px;border-radius:10px 10px 2px 10px;max-width:80%}
.mock-msg.in{display:flex;justify-content:flex-start}
.mock-msg.in span{background:rgba(196,57,57,.15);color:var(--red);padding:5px 10px;border-radius:10px 10px 10px 2px;max-width:80%}
.mock-bar{display:flex;gap:6px;padding:8px 12px;margin-top:auto}
.mock-btn{font-family:var(--mono);font-size:8px;color:var(--text-3);border:1px solid var(--line);
  padding:4px 8px;border-radius:3px;background:rgba(255,255,255,.02)}
/* Warehouse mockup */
.mockup-warehouse .mock-table{padding:6px 10px}
.mock-row{display:grid;grid-template-columns:1fr .5fr .4fr;gap:4px;padding:5px 8px;
  font-family:var(--mono);font-size:8.5px;color:var(--text-2);border-bottom:1px solid rgba(255,255,255,.03)}
.mock-row.head{color:var(--text-3);font-size:7.5px;letter-spacing:.08em;text-transform:uppercase;
  border-bottom:1px solid var(--line)}
.mock-row .ok{color:#28c840}.mock-row .warn{color:#febc2e}.mock-row .crit{color:#ff5f57}
/* Bot tabs */
.mock-tabs{display:flex;gap:0;border-bottom:1px solid var(--line)}
.mock-tabs span{font-family:var(--mono);font-size:8px;letter-spacing:.06em;color:var(--text-3);
  padding:6px 12px;border-bottom:2px solid transparent;transition:.25s}
.mock-tabs span.active{color:var(--red);border-bottom-color:var(--red)}
/* Crypto wallet mockup */
.mockup-wallet{display:flex;flex-direction:column;gap:0}
.wallet-top{display:flex;justify-content:space-between;align-items:flex-start;padding:14px 16px 10px;gap:12px}
.wallet-balance{flex:1}
.wallet-label{font-family:var(--mono);font-size:8px;color:var(--text-3);letter-spacing:.1em;text-transform:uppercase}
.wallet-amount{font-family:var(--disp);font-size:clamp(1.2rem,2.2vw,1.8rem);font-weight:700;color:var(--text);margin:6px 0 4px;line-height:1}
.wallet-amount-dec{color:var(--text-3);font-size:.7em}
.wallet-change{font-family:var(--mono);font-size:9px;letter-spacing:.06em}
.wallet-change.up{color:#28c840}
.wallet-change.down{color:#ff5f57}
.wallet-chart{flex:1;max-width:55%;height:44px}
.wallet-chart svg{width:100%;height:100%}
.wallet-line{fill:none;stroke:var(--red);stroke-width:1.2;stroke-linejoin:round;stroke-linecap:round}
.wallet-line-fill{fill:rgba(255,42,42,.08);stroke:none}
.wallet-coins{padding:0 16px;display:flex;flex-direction:column;gap:4px}
.wallet-coin{display:flex;align-items:center;gap:10px;padding:7px 10px;background:rgba(255,255,255,.03);
  border-radius:5px;border:1px solid rgba(255,255,255,.04);transition:border-color .3s}
.wallet-coin:hover{border-color:var(--graphite)}
.coin-icon{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:700;
  font-family:var(--mono);flex-shrink:0}
.coin-icon.btc{background:rgba(247,147,26,.12);color:#f7931a}
.coin-icon.eth{background:rgba(98,126,234,.12);color:#627eea}
.coin-icon.usdt{background:rgba(38,161,123,.12);color:#26a17b}
.wallet-coin b{font-family:var(--mono);font-size:9px;color:var(--text);display:block}
.wallet-coin small{font-family:var(--mono);font-size:8px;color:var(--text-3)}
.coin-val{margin-left:auto;font-family:var(--mono);font-size:9px;color:var(--text-2);text-align:right;white-space:nowrap}
.wallet-actions{display:flex;gap:6px;padding:10px 16px 14px;margin-top:2px}
.wallet-btn{flex:1;font-family:var(--mono);font-size:8px;letter-spacing:.06em;text-align:center;
  padding:7px 6px;border-radius:4px;border:1px solid var(--line);color:var(--text-3);
  background:rgba(255,255,255,.02);transition:.3s}
.wallet-btn.send{border-color:rgba(255,42,42,.2);color:var(--red)}
.wallet-btn.send:hover{background:rgba(255,42,42,.1)}
.wallet-btn.recv{border-color:rgba(40,200,64,.2);color:#28c840}
.wallet-btn.recv:hover{background:rgba(40,200,64,.1)}
.wallet-btn.swap{border-color:rgba(255,255,255,.08)}
.wallet-btn.swap:hover{background:rgba(255,255,255,.05)}
/* Site mockup */
.mockup-site .mock-site-hero{padding:14px 16px 10px;display:flex;flex-direction:column;gap:6px}
.mock-site-line{height:6px;border-radius:3px;background:rgba(255,255,255,.06)}
.mock-site-line.w70{width:70%}.mock-site-line.w90{width:90%}.mock-site-line.w80{width:80%}
.mock-site-line.w60{width:60%}.mock-site-line.w50{width:50%}.mock-site-line.w40{width:40%}
.mock-site-btn{width:50px;height:12px;border-radius:2px;background:var(--red-deep);opacity:.6}
.mock-site-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;padding:0 16px 14px}
.mock-site-card{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.05);
  border-radius:4px;padding:8px 8px 10px;display:flex;flex-direction:column;gap:5px}
.mock-site-card-icon{width:16px;height:16px;border-radius:3px;background:rgba(255,42,42,.15);
  border:1px solid rgba(255,42,42,.2)}
/* Future mockup */
.mockup-future .mock-placeholder{padding:20px 16px;display:flex;flex-direction:column;gap:10px}
.mock-ph-line{height:6px;border-radius:3px;background:rgba(255,255,255,.04)}
.mock-ph-line.w80{width:80%}.mock-ph-line.w60{width:60%}.mock-ph-line.w90{width:90%}
.mock-ph-block{height:40px;border-radius:4px;background:rgba(255,255,255,.03);margin-top:6px;
  border:1px dashed rgba(255,255,255,.08)}

/* L5 — CORE */
.core{height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;gap:46px}
.core-stage{position:relative;width:min(74vw,420px);aspect-ratio:1;touch-action:none}
@media (pointer:fine){.core-stage{cursor:none}}
.core-stage svg{width:100%;height:100%;overflow:visible}
.core-orbit{stroke:var(--graphite);stroke-width:.6;fill:none;opacity:.45}
.core-sphere{fill:var(--red-deep)}
.core-glow{fill:var(--red)}
.core-tick{fill:var(--text-3);font-family:var(--mono);font-size:8px;letter-spacing:.1em}
.core-hint{font-family:var(--mono);font-size:9px;letter-spacing:.16em;color:var(--text-4);margin-top:8px}
.core-copy{max-width:32ch}
.core-copy .eyebrow{justify-content:center;margin-bottom:24px}
.core-copy h2{font-size:clamp(1.8rem,5vw,3.4rem);font-weight:700;line-height:1.06;letter-spacing:-.03em}
.core-copy h2 em{font-style:normal;color:var(--red)}
.core-copy p{font-family:var(--mono);font-size:12.5px;line-height:1.95;color:var(--text-2);margin-top:24px}

/* L5.5 — TESTIMONIALS */
.testimonials{padding-block:10vh 6vh}
.testimonials h2{font-size:clamp(1.6rem,4vw,3rem);font-weight:500;letter-spacing:-.02em;max-width:24ch;margin-bottom:clamp(36px,5vh,60px)}
.testimonials h2 em{font-style:normal;color:var(--red)}
.testi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:clamp(18px,2.5vw,28px)}
.testi{border:1px solid var(--line);border-radius:3px;padding:clamp(22px,2.8vw,36px);position:relative;
  background:linear-gradient(158deg,rgba(255,255,255,.018),rgba(255,255,255,.004));
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;flex-direction:column;gap:24px;
  transition:border-color .4s}
.testi::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--red-deep),transparent);opacity:.4}
.testi:hover{border-color:var(--graphite)}
.testi-text{font-family:var(--mono);font-size:clamp(11px,1.2vw,13px);line-height:1.9;color:var(--text-2);
  font-style:normal;max-width:52ch}
.testi-text::before{content:"\201C";color:var(--red);font-size:1.4em;line-height:0;vertical-align:-.2em;margin-right:2px}
.testi-author{display:flex;flex-direction:column;gap:4px}
.testi-name{font-size:clamp(13px,1.4vw,15px);font-weight:500;letter-spacing:-.01em;color:var(--text)}
.testi-role{font-family:var(--mono);font-size:9.5px;letter-spacing:.1em;color:var(--text-3);text-transform:uppercase}

/* L5.8 — BLOG */
.blog{padding-block:10vh 6vh}
.blog h2{font-size:clamp(1.6rem,4vw,3rem);font-weight:500;letter-spacing:-.02em;max-width:24ch;margin-bottom:16px}
.blog h2 em{font-style:normal;color:var(--red)}
.blog-sub{max-width:56ch;font-family:var(--mono);font-size:11.5px;line-height:1.9;color:var(--text-2);margin-bottom:clamp(36px,5vh,60px)}
.blog-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:clamp(18px,2.5vw,28px)}
.blog-card{display:flex;flex-direction:column;gap:14px;border:1px solid var(--line);border-radius:3px;
  padding:clamp(22px,2.8vw,36px);position:relative;
  background:linear-gradient(158deg,rgba(255,255,255,.018),rgba(255,255,255,.004));
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);transition:border-color .4s}
.blog-card::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--red-deep),transparent);opacity:.35}
.blog-card:hover{border-color:var(--graphite)}
.blog-meta{display:flex;align-items:center;gap:12px;font-family:var(--mono);font-size:10px;letter-spacing:.06em;color:var(--text-3)}
.blog-tag{color:var(--red);border:1px solid var(--red-deep);padding:3px 8px;border-radius:2px;font-size:9px;letter-spacing:.08em}
.blog-card h3{font-size:clamp(1.1rem,2vw,1.5rem);font-weight:600;letter-spacing:-.02em;line-height:1.2;max-width:28ch;
  transition:transform .4s var(--ease)}
.blog-card:hover h3{transform:translateX(6px)}
.blog-excerpt{font-family:var(--mono);font-size:11px;line-height:1.9;color:var(--text-2);max-width:48ch}
.blog-read{font-family:var(--mono);font-size:10px;letter-spacing:.12em;color:var(--text-3);margin-top:auto;
  transition:color .3s}
.blog-card:hover .blog-read{color:var(--red)}

/* L6 — UPLINK */
.uplink{min-height:100vh;display:flex;flex-direction:column;justify-content:center;padding-block:13vh}
.uplink .eyebrow{margin-bottom:32px}
.uplink h2{font-size:clamp(2rem,6.4vw,5rem);font-weight:700;letter-spacing:-.035em;line-height:.98;
  margin-bottom:18px}
.uplink h2 em{font-style:normal;color:var(--red)}
.uplink-sub{max-width:46ch;color:var(--text-2);font-size:1.02rem;line-height:1.7;margin-bottom:50px}
.uplink-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(30px,6vw,90px);align-items:start}
.terminal{border:1px solid var(--line);border-radius:3px;background:rgba(255,255,255,.014);overflow:hidden}
.terminal-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--line);
  font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:var(--text-3)}
.terminal-bar .lamp{width:7px;height:7px;border-radius:50%;background:var(--graphite);transition:.3s}
.terminal-bar .lamp.on{background:var(--red);box-shadow:0 0 8px var(--red-glow)}
.terminal-body{padding:clamp(22px,3vw,34px)}
.field{margin-bottom:24px}
.field label{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:var(--text-2);
  margin-bottom:11px;text-transform:uppercase}
.field label::before{content:"> ";color:var(--red)}
.field input,.field textarea{width:100%;background:transparent;border:none;border-bottom:1px solid var(--line);
  color:var(--text);font-family:var(--mono);font-size:14px;padding:9px 0;outline:none;resize:none;
  transition:border-color .3s}
@media (pointer:fine){.field input,.field textarea,.send{cursor:none}}
.field input:focus,.field textarea:focus{border-color:var(--red)}
.field input::placeholder,.field textarea::placeholder{color:var(--text-4)}
.send{margin-top:6px;width:100%;border:1px solid var(--red-deep);color:var(--text);font-family:var(--mono);
  font-size:12px;letter-spacing:.18em;padding:17px;position:relative;overflow:hidden;text-transform:uppercase}
.send span{position:relative;z-index:2}
.send::before{content:"";position:absolute;inset:0;background:var(--red);transform:translateY(101%);
  transition:transform .42s var(--ease)}
.send:hover::before{transform:translateY(0)}
.send:hover{color:#000}
.send.ok{border-color:var(--red);color:var(--red)}
.send.err{border-color:var(--red);color:var(--red);animation:shake .4s}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}

.uplink-aside{font-family:var(--mono)}
.uplink-aside .ports{display:flex;flex-direction:column;gap:16px;margin-bottom:42px}
.port{font-size:13px;letter-spacing:.05em;color:var(--text-2);display:flex;align-items:center;gap:11px;
  transition:color .3s;width:fit-content}
@media (pointer:fine){.port{cursor:none}}
.port::before{content:"";width:6px;height:6px;background:var(--graphite);border-radius:50%;transition:.3s}
.port:hover{color:#fff}
.port:hover::before{background:var(--red);box-shadow:0 0 8px var(--red-glow)}
.uplink-note{font-size:10.5px;letter-spacing:.06em;color:var(--text-3);line-height:2.1;max-width:40ch}
.uplink-note b{color:var(--text-2);font-weight:500}

/* ascend footer */
.ascend{padding:8vh var(--gutter) 7vh;border-top:1px solid var(--line);display:flex;
  justify-content:space-between;align-items:center;flex-wrap:wrap;gap:24px}
.ascend-btn{font-family:var(--mono);font-size:12px;letter-spacing:.18em;color:var(--text);
  display:flex;align-items:center;gap:12px}
@media (pointer:fine){.ascend-btn{cursor:none}}
.ascend-btn .arr{display:inline-block;transition:transform .4s var(--ease)}
.ascend-btn:hover .arr{transform:translateY(-5px)}
.ascend-meta{font-family:var(--mono);font-size:10px;letter-spacing:.1em;color:var(--text-4);text-align:right}

/* --------------------------- SCHEMATIC MAP ------------------------------ */
.schematic{position:fixed;inset:0;z-index:9960;background:rgba(4,5,6,.94);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);opacity:0;visibility:hidden;
  transition:opacity .5s var(--ease),visibility .5s;display:grid;place-items:center}
.schematic.open{opacity:1;visibility:visible}
.schematic-inner{width:min(880px,88vw)}
.schematic-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:40px}
.schematic-head h3{font-family:var(--mono);font-size:12px;letter-spacing:.22em;color:var(--text-2);
  text-transform:uppercase}
.schematic-close{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--text-3)}
@media (pointer:fine){.schematic-close,.node{cursor:none}}
.schematic-close:hover{color:var(--red)}
.nodes{display:flex;flex-direction:column}
.node{display:grid;grid-template-columns:60px 1fr auto;align-items:center;gap:24px;
  padding:20px 0;border-top:1px solid var(--line);position:relative;opacity:0}
.node:last-child{border-bottom:1px solid var(--line)}
.node .nx{font-family:var(--mono);font-size:11px;color:var(--text-4);letter-spacing:.1em;transition:color .3s}
.node .nm{font-size:clamp(1.1rem,2.4vw,1.7rem);font-weight:500;letter-spacing:-.02em;transition:transform .4s var(--ease)}
.node .nd{font-family:var(--mono);font-size:10px;letter-spacing:.12em;color:var(--text-3);text-transform:uppercase}
.node:hover .nx{color:var(--red)}
.node:hover .nm{transform:translateX(12px)}
.node:hover .nd{color:var(--red)}

/* ----------------------------- CONSOLE ---------------------------------- */
.console{position:fixed;left:0;right:0;bottom:0;z-index:9965;background:#05060800;
  border-top:1px solid var(--red-deep);transform:translateY(100%);transition:transform .4s var(--ease);
  font-family:var(--mono);max-height:46vh;display:flex;flex-direction:column;
  background:rgba(5,6,8,.97)}
.console.open{transform:translateY(0)}
.console-out{padding:18px var(--gutter);overflow-y:auto;font-size:12px;line-height:1.9;color:var(--text-2)}
.console-out .c-red{color:var(--red)}
.console-out .c-w{color:var(--text)}
.console-in{display:flex;align-items:center;gap:10px;padding:12px var(--gutter);border-top:1px solid var(--line)}
.console-in .pr{color:var(--red);font-size:12px}
.console-in input{flex:1;background:transparent;border:none;outline:none;color:var(--text);
  font-family:var(--mono);font-size:12px}
.console-tip{position:fixed;right:var(--gutter);bottom:26px;z-index:300;font-family:var(--mono);
  font-size:9px;letter-spacing:.14em;color:var(--text-4)}

/* Engine drag cursor states */
@media (pointer:fine){
  body.engine-grab .cursor{width:0;height:0}
  body.engine-grab .cursor-ring{width:60px;height:60px;border-color:var(--red);
    border-style:dashed;border-width:1.5px;
    background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23FF2A2A' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 9l4-4 4 4'/%3E%3Cpath d='M15 15l4 4-4 4'/%3E%3Cpath d='M9 5v14'/%3E%3Cpath d='M15 5v14'/%3E%3C/svg%3E") center/16px no-repeat}
  body.engine-grab .cursor-label{opacity:1}
  body.engine-dragging .cursor{width:0;height:0}
  body.engine-dragging .cursor-ring{width:54px;height:54px;border-color:var(--red);border-style:dashed;
    border-width:2px;
    background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23FF2A2A' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 9l4-4 4 4'/%3E%3Cpath d='M15 15l4 4-4 4'/%3E%3Cpath d='M9 5v14'/%3E%3Cpath d='M15 5v14'/%3E%3C/svg%3E") center/16px no-repeat;
    animation:none}
  body.engine-dragging .cursor-label{opacity:0}
  body.engine-dragging .engine-track{cursor:grabbing}
  /* grab hint label */
  body.engine-grab .cursor-label::after{content:'ТАЩИТЕ'}
}

/* Fallback for non-fine pointers (touch devices) */
body.engine-dragging .engine-stage{touch-action:pan-y}

/* AI Assistant mockup */
.mockup-ai{display:flex;flex-direction:column;gap:0}
.ai-chat{padding:12px 14px;display:flex;flex-direction:column;gap:6px;flex:1}
.ai-msg{padding:7px 12px;border-radius:10px;font-size:9px;line-height:1.4;font-family:var(--mono);
  max-width:85%;word-break:break-word}
.ai-msg.user{align-self:flex-end;background:rgba(255,42,42,.12);color:var(--red);
  border-bottom-right-radius:3px}
.ai-msg.bot{align-self:flex-start;background:rgba(255,255,255,.05);color:var(--text-2);
  border-bottom-left-radius:3px}
.ai-msg.bot.done{color:rgba(80,250,120,.85)}
.ai-typing{display:inline-block;width:14px;height:8px;position:relative}
.ai-typing::before{content:'...';position:absolute;color:var(--text-3);animation:ai-dots 1.2s steps(3) infinite}
@keyframes ai-dots{0%{content:'.'}33%{content:'..'}66%{content:'...'}}
.ai-bar{display:flex;gap:6px;padding:8px 14px 10px;border-top:1px solid var(--line);
  flex-wrap:wrap}
.ai-chip{font-size:8px;padding:3px 8px;border-radius:6px;background:rgba(255,255,255,.04);
  color:var(--text-3);letter-spacing:.04em}
.ai-chip.active{background:rgba(255,42,42,.1);color:var(--red)}

/* Parser/DataMiner mockup */
.mockup-parser{display:flex;flex-direction:column;gap:0}
.parser-stats{display:flex;gap:0;border-bottom:1px solid var(--line)}
.parser-metric{flex:1;padding:10px 14px;text-align:center}
.parser-metric + .parser-metric{border-left:1px solid var(--line)}
.pm-val{display:block;font-size:16px;font-weight:700;color:var(--text);
  font-family:var(--mono)}
.pm-unit{font-size:10px;font-weight:400}
.pm-label{display:block;font-size:8px;color:var(--text-3);margin-top:2px;letter-spacing:.05em}
.parser-table{padding:8px 14px;display:flex;flex-direction:column;gap:0;flex:1}
.parser-row{display:grid;grid-template-columns:1fr 70px 50px;gap:8px;font-size:8px;
  font-family:var(--mono);padding:5px 0;color:var(--text-3);
  border-bottom:1px solid rgba(255,255,255,.03)}
.parser-row.hdr{color:var(--text-4);font-size:7px;letter-spacing:.06em;text-transform:uppercase}
.parser-ok{color:rgba(80,250,120,.8)}
.parser-warn{color:var(--red)}
.parser-bar{display:flex;gap:6px;padding:8px 14px 10px;border-top:1px solid var(--line)}
.parser-btn{font-size:8px;padding:4px 10px;border-radius:6px;background:rgba(255,255,255,.04);
  color:var(--text-3);cursor:pointer;letter-spacing:.03em;transition:background .2s}
.parser-btn:hover{background:rgba(255,42,42,.1);color:var(--red)}

/* ----------------------------- RESPONSIVE ------------------------------- */
@media (max-width:1024px){
  .uplink-grid{grid-template-columns:1fr;gap:46px}
  .depth-track{height:150px}
}
@media (max-width:860px){
  .depth{display:none}
  .module{grid-template-columns:46px 1fr;grid-template-rows:auto auto;gap:18px}
  .module-viz{grid-column:1/-1;height:150px}
  .module:hover .module-title{transform:none}
  .engine-stage{height:auto;display:block}
  .engine-track{flex-direction:column;padding:0 var(--gutter)}
  .case{flex:none;min-height:auto;width:100%}
  .nav-status .net{display:none}
  .console-tip{display:none}
}
@media (max-width:560px){
  .nav-status{font-size:9px}
  .nav-map span{display:none}
}

/* keyboard focus — styled in world, not removed */
:focus-visible{outline:1px solid var(--red);outline-offset:3px}

/* reduced motion */
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;scroll-behavior:auto!important}
  .scroll-hint .bar::after,.nav-status .dot,.snd.on .eq i{animation:none}
}