:root{
    --bg:#f0f0f0;
    --bg-2:#e3e3e3;
    --surface:#ffffff;
    --surface-2:#f6f6f6;
    --border:#d2d2d2;
    --border-soft:#e6e6e6;
    --gold:#262626;
    --gold-soft:#000000;
    --teal:#767676;
    --teal-soft:#454545;
    --text:#161616;
    --text-muted:#5c5c5c;
    --text-dim:#8a8a8a;
    --radius:2px;
    --maxw:1280px;
    --ff-display:'Space Grotesk', sans-serif;
    --ff-body:'Inter', sans-serif;
    --ff-mono:'JetBrains Mono', monospace;
  }

  [data-theme="dark"]{
    --bg:#0a0a0a;
    --bg-2:#050505;
    --surface:#141414;
    --surface-2:#1e1e1e;
    --border:#3a3a3a;
    --border-soft:#262626;
    --gold:#e5e5e5;
    --gold-soft:#ffffff;
    --teal:#888888;
    --teal-soft:#b5b5b5;
    --text:#f2f2f2;
    --text-muted:#9a9a9a;
    --text-dim:#6b6b6b;
  }
  [data-theme="dark"] .btn-primary,
  [data-theme="dark"] .btn-submit:hover{color:#0a0a0a;}
  [data-theme="dark"] header.site{background:rgba(10,10,10,0.92);}
  [data-theme="dark"] .hero::before{background:radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);}
  [data-theme="dark"] .cmdk-modal{box-shadow:0 24px 60px rgba(0,0,0,0.55);}

  *{margin:0;padding:0;box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    *{animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important;}
  }

  body{
    background:var(--bg);
    color:var(--text);
    font-family:var(--ff-body);
    line-height:1.5;
    font-size:16px;
    -webkit-font-smoothing:antialiased;
  }

  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  ul{list-style:none;}
  button{font-family:inherit;cursor:pointer;}

  .wrap{max-width:var(--maxw); margin:0 auto; padding:0 32px;}
  @media (max-width:640px){ .wrap{padding:0 20px;} }

  .eyebrow{
    font-family:var(--ff-mono);
    font-size:12px;
    letter-spacing:0.14em;
    text-transform:uppercase;
    color:var(--gold);
    display:flex;
    align-items:center;
    gap:10px;
  }
  .eyebrow::before{
    content:"";
    width:16px; height:1px;
    background:var(--gold);
    display:inline-block;
  }

  h1,h2,h3{font-family:var(--ff-display); font-weight:600; letter-spacing:-0.01em;}

  /* ---------- Ruler / rack-tick divider motif ---------- */
  .ruler{
    height:18px;
    background-image:repeating-linear-gradient(90deg, var(--border) 0 1px, transparent 1px 40px);
    border-top:1px solid var(--border-soft);
    border-bottom:1px solid var(--border-soft);
    position:relative;
  }
  .ruler::after{
    content:"";
    position:absolute; inset:0;
    background-image:repeating-linear-gradient(90deg, var(--gold) 0 1px, transparent 1px 200px);
    opacity:0.35;
  }

  /* ---------- Matrix rain (side margins, wide screens only) ---------- */
  .matrix-rain{
    display:none;
    position:fixed; top:0; height:100vh;
    width:calc((100vw - 1280px) / 2);
    z-index:-1; pointer-events:none;
  }
  .matrix-rain-left{left:0;}
  .matrix-rain-right{right:0;}
  @media (min-width:1540px){ .matrix-rain{display:block;} }

  /* ---------- Scroll-progress rack rail ---------- */
  .scroll-rack{
    position:fixed; right:24px; top:50%; transform:translateY(-50%);
    height:min(42vh, 360px);
    display:flex; flex-direction:column; align-items:center;
    z-index:40; pointer-events:none;
    opacity:0; transition:opacity 0.4s ease;
  }
  .scroll-rack.visible{opacity:1;}
  @media (max-width:1180px){ .scroll-rack{display:none;} }

  .scroll-rack-cap{
    font-family:var(--ff-mono); font-size:9px; color:var(--text-dim);
    padding:7px 0; letter-spacing:0.03em;
  }

  .scroll-rack-track{
    position:relative; flex:1 1 auto; width:2px;
    background:var(--border-soft);
  }
  .scroll-rack-ticks{position:absolute; inset:0;}
  .scroll-rack-ticks .tick{
    position:absolute; left:-3px; width:7px; height:1px;
    background:var(--border); transform:translateY(-50%);
  }
  .scroll-rack-ticks .tick.major{left:-6px; width:13px; background:var(--text-dim);}

  .scroll-rack-fill{
    position:absolute; top:0; left:0; width:100%; height:0%;
    background:var(--gold-soft);
  }

  .scroll-rack-thumb{
    position:absolute; left:50%; top:0%;
    transform:translate(-50%, -50%);
    font-family:var(--ff-mono); font-weight:600; font-size:9.5px; color:var(--bg);
    background:var(--gold-soft);
    padding:3px 6px; white-space:nowrap;
  }

  /* ---------- Command palette ---------- */
  .cmdk-overlay{
    position:fixed; inset:0; z-index:200;
    background:rgba(5,5,5,0.75);
    backdrop-filter:blur(4px);
    display:flex;
    align-items:flex-start; justify-content:center;
    padding:12vh 20px 0;
    opacity:0; visibility:hidden; pointer-events:none;
    transition:opacity 0.18s ease, visibility 0s linear 0.18s;
  }
  .cmdk-overlay.open{
    opacity:1; visibility:visible; pointer-events:auto;
    transition:opacity 0.18s ease;
  }

  .cmdk-modal{
    width:min(560px, 100%);
    max-height:70vh;
    background:var(--surface);
    border:1px solid var(--border);
    display:flex; flex-direction:column;
    box-shadow:0 24px 60px rgba(0,0,0,0.18);
    transform:translateY(-14px) scale(0.97);
    transition:transform 0.22s cubic-bezier(0.22,1,0.36,1);
  }
  .cmdk-overlay.open .cmdk-modal{transform:translateY(0) scale(1);}

  .cmdk-input-row{
    display:flex; align-items:center; gap:10px;
    padding:16px 18px;
    border-bottom:1px solid var(--border-soft);
    flex:0 0 auto;
  }
  .cmdk-icon{color:var(--text-dim); flex:0 0 auto; display:flex;}
  .cmdk-icon svg{width:16px; height:16px;}
  .cmdk-input{
    flex:1 1 auto; background:none; border:none; outline:none;
    color:var(--text); font-family:var(--ff-body); font-size:15px;
  }
  .cmdk-input::placeholder{color:var(--text-dim);}
  .cmdk-esc{
    font-family:var(--ff-mono); font-size:10px; color:var(--text-dim);
    border:1px solid var(--border); padding:2px 6px; flex:0 0 auto;
  }

  .cmdk-results{overflow-y:auto; padding:8px 0; flex:1 1 auto;}
  .cmdk-group-label{
    font-family:var(--ff-mono); font-size:10px; color:var(--text-dim);
    text-transform:uppercase; letter-spacing:0.07em;
    padding:12px 18px 6px;
  }
  .cmdk-item{
    display:flex; justify-content:space-between; align-items:center; gap:14px;
    padding:10px 18px;
    cursor:pointer;
    border-left:2px solid transparent;
  }
  .cmdk-item.selected{background:var(--surface-2); border-left-color:var(--gold);}
  .cmdk-item-label{font-size:14px; color:var(--text);}
  .cmdk-item-hint{
    font-family:var(--ff-mono); font-size:11px; color:var(--text-dim);
    white-space:nowrap; flex:0 0 auto;
  }
  .cmdk-match{color:var(--gold-soft); font-weight:600;}
  .cmdk-empty{
    padding:32px 18px; text-align:center;
    font-family:var(--ff-mono); font-size:12.5px; color:var(--text-dim);
  }

  .cmdk-footer{
    display:flex; gap:16px; padding:10px 18px;
    border-top:1px solid var(--border-soft);
    font-family:var(--ff-mono); font-size:10.5px; color:var(--text-dim);
    flex:0 0 auto; flex-wrap:wrap;
  }
  .cmdk-key{border:1px solid var(--border); padding:1px 5px; margin-right:4px;}
  @media (max-width:560px){ .cmdk-footer span:nth-child(2){display:none;} }

  /* ---------- Top utility bar ---------- */
  .topbar{
    background:var(--bg-2);
    border-bottom:1px solid var(--border-soft);
    font-family:var(--ff-mono);
    font-size:12px;
    color:var(--text-dim);
  }
  .topbar .wrap{
    display:flex; justify-content:space-between; align-items:center;
    height:34px;
  }
  .topbar .topbar-left{display:flex; gap:22px;}
  .topbar span.dot{
    color:var(--gold); margin-right:6px; display:inline-block;
    animation:pulse 2s ease-in-out infinite;
  }
  .topbar span.dot.dot-off{color:var(--text-dim); animation:none;}
  .topbar .clock-mono{font-variant-numeric:tabular-nums; color:var(--text-muted); transition:opacity 0.1s ease;}
  .topbar .clock-mono.tick{opacity:0.3;}
  .lang-switch{display:flex; gap:8px;}
  .lang-switch span{color:var(--border);}
  .tight-top{padding-top:0;}
  .lang-switch button{
    background:none; border:none; color:var(--text-dim); font-family:var(--ff-mono); font-size:12px;
    padding:2px 4px;
  }
  .lang-switch button.active{color:var(--gold-soft);}
  .theme-switch{display:flex; gap:8px; margin-right:14px;}
  .theme-switch span{color:var(--border);}
  .theme-switch button{
    background:none; border:none; color:var(--text-dim); font-family:var(--ff-mono); font-size:13px;
    padding:2px 4px; line-height:1;
  }
  .theme-switch button.active{color:var(--gold-soft);}
  @media (max-width:760px){ .topbar .topbar-left span:nth-child(2){display:none;} }

  /* ---------- Nav ---------- */
  header.site{
    position:sticky; top:0; z-index:50;
    background:rgba(240,240,240,0.92);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--border-soft);
  }
  nav.main{
    display:flex; align-items:center; justify-content:space-between;
    height:76px;
  }
  /* ---------- Логотип (картинки assets/img/logo-light-theme.svg и logo-dark-theme.svg) ---------- */
  .logo{display:flex; align-items:center;}
  .brand-logo{display:block; height:32px; width:auto; flex:0 0 auto;}
  .brand-logo-dark{display:none;}                                   /* на светлой теме виден чёрный логотип */
  [data-theme="dark"] .brand-logo-light{display:none;}              /* на тёмной — белый */
  [data-theme="dark"] .brand-logo-dark{display:block;}
  .footer-brand .brand-logo{height:28px;}
  @media (max-width:560px){ .brand-logo{height:26px;} .footer-brand .brand-logo{height:24px;} }
  .nav-links{
    display:flex; gap:34px;
    font-size:14.5px; font-weight:500;
  }
  .nav-links a{
    color:var(--text-muted);
    position:relative;
    padding:4px 0;
    transition:color 0.15s ease;
  }
  .nav-links a:hover{color:var(--text);}
  .nav-links a::after{
    content:""; position:absolute; left:0; bottom:-2px; height:1px; width:0;
    background:var(--gold); transition:width 0.2s ease;
  }
  .nav-links a:hover::after{width:100%;}
  .nav-right{display:flex; align-items:center; gap:22px;}

  .cmdk-trigger{
    display:flex; align-items:center; gap:8px;
    background:var(--bg-2); border:1px solid var(--border);
    padding:8px 12px;
    font-family:var(--ff-mono); font-size:12px; color:var(--text-dim);
    transition:border-color 0.15s ease, color 0.15s ease;
  }
  .cmdk-trigger:hover{border-color:var(--gold); color:var(--text-muted);}
  .cmdk-trigger svg{width:14px; height:14px;}
  .cmdk-trigger-key{border:1px solid var(--border); padding:1px 5px; font-size:10.5px;}
  @media (max-width:640px){ .cmdk-trigger-key{display:none;} .cmdk-trigger{padding:8px;} }
  .nav-phone{
    font-family:var(--ff-mono); font-size:14.5px; color:var(--text);
    display:flex; flex-direction:column; align-items:flex-end; line-height:1.25;
  }
  .nav-phone small{color:var(--text-dim); font-size:11px; font-weight:400;}
  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    font-family:var(--ff-body); font-weight:600; font-size:14px;
    padding:11px 22px;
    border-radius:var(--radius);
    border:1px solid transparent;
    cursor:pointer;
    transition:all 0.18s ease;
    white-space:nowrap;
  }
  .btn-primary{background:var(--gold); color:#fafafa;}
  .btn-primary:hover{background:var(--gold-soft); transform:translateY(-1px);}
  .btn-outline{background:transparent; color:var(--text); border-color:var(--border);}
  .btn-outline:hover{border-color:var(--gold); color:var(--gold-soft);}
  .btn-sm{padding:8px 16px; font-size:13px;}

  .nav-burger{display:none; background:none; border:none; color:var(--text); font-size:22px;}

  @media (max-width:980px){
    .nav-links{display:none;}
    .nav-phone{display:none;}
    .nav-burger{display:block;}
  }

  /* ---------- Hero ---------- */
  .hero{
    padding:76px 0 64px;
    position:relative;
    overflow:hidden;
  }
  .hero::before{
    content:"";
    position:absolute; top:-20%; right:-10%;
    width:600px; height:600px;
    background:radial-gradient(circle, rgba(0,0,0,0.05) 0%, transparent 70%);
    pointer-events:none;
  }
  .hero-grid{
    display:grid; grid-template-columns:1.05fr 0.85fr; gap:56px; align-items:center;
  }
  @media (max-width:980px){ .hero-grid{grid-template-columns:1fr;} }

  .hero h1{
    font-size:clamp(34px, 4.6vw, 58px);
    line-height:1.04;
    margin:18px 0 22px;
  }
  .hero h1 .accent{color:var(--gold);}
  .hero p.lead{
    font-size:17px; color:var(--text-muted); max-width:520px; margin-bottom:32px;
  }
  .hero-ctas{display:flex; gap:14px; flex-wrap:wrap; margin-bottom:40px;}

  .hero-specs{
    display:flex; gap:28px; flex-wrap:wrap;
    font-family:var(--ff-mono); font-size:12.5px; color:var(--text-dim);
    border-top:1px solid var(--border-soft); padding-top:20px;
  }
  .hero-specs b{color:var(--gold-soft); font-weight:600;}

  /* interactive rack builder panel */
  .rack-panel{
    background:var(--surface);
    border:1px solid var(--border);
    padding:22px;
    position:relative;
  }
  .rack-panel .panel-label{
    display:flex; justify-content:space-between;
    font-family:var(--ff-mono); font-size:11px; color:var(--text-dim);
    margin-bottom:14px; letter-spacing:0.06em; text-transform:uppercase;
  }
  .rack-panel .panel-label .live{color:var(--gold-soft); display:flex; align-items:center; gap:6px;}
  .rack-panel .live .ping-value{
    display:inline-block; font-variant-numeric:tabular-nums;
    transition:opacity 0.15s ease;
  }
  .rack-panel .live .ping-value.tick{opacity:0.25;}
  .rack-panel .live .pulse{
    width:6px; height:6px; border-radius:50%; background:var(--gold);
    animation:pulse 2s ease-in-out infinite;
  }
  @keyframes pulse{ 0%,100%{opacity:1;} 50%{opacity:0.25;} }

  /* ---------- Interactive rack builder ---------- */
  .rack-body{display:flex; gap:8px; margin-bottom:16px;}
  .rack-cables{width:16px; flex:0 0 auto;}
  .rack-cables .cable-line{stroke-dasharray:4 3; animation:coolantFlow 2.2s linear infinite;}
  .rack-cables .cable-line.gold{stroke:var(--gold); opacity:0.75;}
  .rack-cables .cable-line.teal{stroke:var(--teal-soft); opacity:0.75;}
  .rack-ruler{position:relative; width:34px; flex:0 0 auto;}
  .rack-ruler .tick{
    position:absolute; left:0; right:0; transform:translateY(-50%);
    font-family:var(--ff-mono); font-size:7.5px; color:var(--text-dim);
    text-align:right; padding-right:6px; line-height:1.3;
  }
  .rack-ruler .tick .tick-cm{display:block; font-size:6px; color:var(--text-dim); opacity:0.75;}
  .rack-ruler .tick::after{
    content:""; position:absolute; right:0; top:50%; width:4px; height:1px; background:var(--border);
  }
  .rack-frame{
    position:relative; flex:1 1 auto;
    border:1px solid var(--border);
    background:var(--bg-2);
    overflow:hidden;
  }
  .rack-slots{display:flex; flex-direction:column;}
  .rack-unit{
    display:flex; align-items:center;
    gap:6px; padding:0 8px;
    background:var(--surface-2);
    border-bottom:1px solid var(--border-soft);
    font-family:var(--ff-mono); color:var(--text-muted);
    overflow:hidden; white-space:nowrap;
    animation:rackInsert 0.42s cubic-bezier(0.22,1.4,0.36,1);
  }
  .rack-unit .u-name{flex:1 1 auto; font-size:8.5px; letter-spacing:0.02em; overflow:hidden; text-overflow:ellipsis;}
  .rack-unit .u-tag{font-size:7px; color:var(--text-dim); flex:0 0 auto; width:16px; text-align:right;}
  .rack-unit .u-led{width:3px; height:3px; border-radius:50%; background:var(--gold-soft); flex:0 0 auto;}
  @keyframes rackInsert{ from{opacity:0; transform:translateX(34px);} to{opacity:1; transform:translateX(0);} }

  .rack-empty-hint{
    position:absolute; inset:6px;
    display:flex; align-items:center; justify-content:center; text-align:center;
    padding:16px; font-family:var(--ff-mono); font-size:11px; color:var(--text-dim);
    border:1px dashed var(--border);
  }

  .rack-controls{margin-top:2px;}
  .rack-palette{display:flex; flex-wrap:wrap; gap:8px; margin-bottom:10px;}
  .rack-add{
    font-family:var(--ff-mono); font-size:11px; color:var(--text-muted);
    background:var(--bg-2); border:1px solid var(--border);
    padding:7px 11px; display:flex; align-items:center; gap:7px;
    transition:border-color 0.15s ease, color 0.15s ease;
  }
  .rack-add:hover:not(:disabled){border-color:var(--gold); color:var(--gold-soft);}
  .rack-add:disabled{opacity:0.3; cursor:not-allowed;}
  .rack-add .u-chip{
    font-size:9px; color:var(--text-dim); border:1px solid var(--border-soft); padding:1px 5px;
  }

  .rack-status{
    font-family:var(--ff-mono); font-size:11px; color:var(--gold-soft);
    min-height:14px; margin-bottom:8px; opacity:0; transition:opacity 0.25s ease;
  }
  .rack-status.show{opacity:1;}

  .rack-manifest{border-top:1px solid var(--border-soft); margin-top:14px; padding-top:14px;}
  .rack-manifest-title{
    font-family:var(--ff-mono); font-size:10px; color:var(--text-dim);
    text-transform:uppercase; letter-spacing:0.07em; margin-bottom:10px;
  }
  .rack-manifest-list{display:flex; flex-direction:column; gap:5px; margin-bottom:12px; min-height:20px;}
  .rack-manifest-row{
    display:flex; justify-content:space-between; gap:10px;
    font-family:var(--ff-mono); font-size:12px; color:var(--text-muted);
  }
  .rack-manifest-empty{font-family:var(--ff-mono); font-size:12px; color:var(--text-dim);}
  .rack-total{
    display:flex; justify-content:space-between;
    font-family:var(--ff-mono); font-size:12.5px; color:var(--text);
    border-top:1px solid var(--border-soft); padding-top:10px; margin-bottom:14px;
  }
  .rack-total b{color:var(--gold-soft);}
  .rack-total-cm{color:var(--text-dim); font-size:11px; margin-left:4px;}

  .rack-actions{display:flex; gap:10px;}
  .rack-quote-btn{flex:1 1 auto; white-space:normal; line-height:1.3;}
  .rack-reset-btn{
    font-family:var(--ff-mono); font-size:12px; color:var(--text-dim);
    background:transparent; border:1px solid var(--border); padding:11px 16px;
    transition:color 0.15s ease, border-color 0.15s ease;
  }
  .rack-reset-btn:hover{color:var(--text); border-color:var(--gold);}
  @media (max-width:480px){
    .rack-actions{flex-direction:column;}
  }

  /* ---------- Trust bar ---------- */
  .trustbar{
    background:var(--surface);
    border-top:1px solid var(--border-soft);
    border-bottom:1px solid var(--border-soft);
  }
  .trust-grid{
    display:grid; grid-template-columns:repeat(4,1fr);
    padding:30px 0;
  }
  .trust-item{
    text-align:center;
    border-right:1px solid var(--border-soft);
    padding:0 12px;
  }
  .trust-item:last-child{border-right:none;}
  .trust-item .num{
    font-family:var(--ff-display); font-weight:700; font-size:clamp(24px,3vw,32px); color:var(--gold-soft);
  }
  .trust-item .lbl{font-size:12.5px; color:var(--text-muted); margin-top:4px;}
  @media (max-width:760px){
    .trust-grid{grid-template-columns:repeat(2,1fr); gap:20px 0;}
    .trust-item{border-right:none; border-bottom:1px solid var(--border-soft); padding-bottom:16px;}
    .trust-item:nth-child(2n){border-right:none;}
  }

  /* ---------- Section shell ---------- */
  section{padding:88px 0;}
  .section-head{
    display:flex; justify-content:space-between; align-items:flex-end;
    margin-bottom:44px; gap:24px; flex-wrap:wrap;
  }
  .section-head h2{font-size:clamp(26px,3vw,36px); margin-top:10px;}
  .section-head p{color:var(--text-muted); max-width:440px; font-size:14.5px;}

  .products-meta{display:flex; flex-direction:column; gap:12px; max-width:440px;}
  .fx-ticker{
    display:inline-flex; align-items:center; gap:8px; align-self:flex-start;
    border:1px solid var(--border-soft); padding:7px 13px;
    font-family:var(--ff-mono); font-size:11.5px; color:var(--text-dim);
  }
  .fx-dot{
    width:5px; height:5px; border-radius:50%; background:var(--gold); flex:0 0 auto;
    animation:pulse 2s ease-in-out infinite;
  }
  .fx-dot.dot-off{background:var(--text-dim); animation:none;}
  .fx-label{color:var(--text-muted);}
  .fx-label b, #fxRate{color:var(--gold-soft); font-weight:600;}
  .fx-note::before{content:"· "; }

  /* ---------- Category grid ---------- */
  .cat-grid{
    display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
    background:var(--border-soft);
    border:1px solid var(--border-soft);
  }
  @media (max-width:980px){ .cat-grid{grid-template-columns:repeat(2,1fr);} }
  @media (max-width:560px){ .cat-grid{grid-template-columns:1fr;} }
  .cat-card{
    background:var(--surface);
    padding:30px 26px;
    transition:background 0.2s ease;
    position:relative;
  }
  .cat-card:hover{background:var(--surface-2);}
  .cat-card .icon{width:30px; height:30px; color:var(--gold); margin-bottom:18px;}
  .cat-card h3{font-size:16.5px; font-weight:600; margin-bottom:8px; font-family:var(--ff-body);}
  .cat-card p{font-size:13px; color:var(--text-muted); line-height:1.5;}
  .cat-card .go{
    font-family:var(--ff-mono); font-size:11.5px; color:var(--text-dim);
    margin-top:16px; display:flex; align-items:center; gap:6px;
  }
  .cat-card:hover .go{color:var(--gold-soft);}

  .config-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--border-soft); border:1px solid var(--border-soft);}
  @media (max-width:980px){ .config-grid{grid-template-columns:repeat(2,1fr);} }
  @media (max-width:560px){ .config-grid{grid-template-columns:1fr;} }
  /* Если карточек не кратно числу колонок — последняя растягивается, чтобы не оставалось пустых «серых» ячеек.
     Работает для любого количества категорий / конфигураторов (4 колонки на ПК, 2 на планшете, 1 на телефоне). */
  .cat-grid > :last-child:nth-child(4n+1), .config-grid > :last-child:nth-child(4n+1){grid-column:span 4;}
  .cat-grid > :last-child:nth-child(4n+2), .config-grid > :last-child:nth-child(4n+2){grid-column:span 3;}
  .cat-grid > :last-child:nth-child(4n+3), .config-grid > :last-child:nth-child(4n+3){grid-column:span 2;}
  @media (max-width:980px){
    .cat-grid > :last-child:nth-child(4n+1), .config-grid > :last-child:nth-child(4n+1),
    .cat-grid > :last-child:nth-child(4n+2), .config-grid > :last-child:nth-child(4n+2),
    .cat-grid > :last-child:nth-child(4n+3), .config-grid > :last-child:nth-child(4n+3){grid-column:auto;}
    .cat-grid > :last-child:nth-child(odd), .config-grid > :last-child:nth-child(odd){grid-column:span 2;}
  }
  @media (max-width:560px){
    .cat-grid > :last-child:nth-child(odd), .config-grid > :last-child:nth-child(odd){grid-column:auto;}
  }
  .config-card{background:var(--surface); padding:26px 24px; transition:background 0.2s ease;}
  .config-card:hover{background:var(--surface-2);}
  .config-card h3{font-size:16px; font-weight:600; margin-bottom:8px; font-family:var(--ff-body);}
  .config-card p{font-size:13px; color:var(--text-muted); line-height:1.5; margin-bottom:16px;}
  .config-card .price-from{
    font-family:var(--ff-mono); font-size:12px; color:var(--gold-soft);
    border-top:1px solid var(--border-soft); padding-top:12px; margin-bottom:12px; display:block;
  }
  .config-card .go{
    font-family:var(--ff-mono); font-size:11.5px; color:var(--text-dim);
    display:flex; align-items:center; gap:6px;
  }
  .config-card:hover .go{color:var(--gold-soft);}

  /* ---------- Brand strip ---------- */
  .brand-strip{
    background:var(--bg-2);
    border-top:1px solid var(--border-soft);
    border-bottom:1px solid var(--border-soft);
    padding:36px 0;
  }
  .brand-row{
    display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:24px 40px;
  }
  .brand-item{
    font-family:var(--ff-display); font-weight:600; font-size:19px; color:var(--text-dim);
    letter-spacing:0.01em;
    transition:color 0.2s ease;
  }
  .brand-item:hover{color:var(--text);}

  /* ---------- Why us ---------- */
  .why-grid{
    display:grid; grid-template-columns:repeat(3,1fr); gap:2px;
  }
  @media (max-width:860px){ .why-grid{grid-template-columns:1fr;} }
  .why-card{
    padding:8px 28px 8px 0;
    border-left:2px solid var(--gold);
    padding-left:22px;
  }
  .why-card .n{font-family:var(--ff-mono); color:var(--text-dim); font-size:12px; margin-bottom:14px;}
  .why-card h3{font-size:18px; margin-bottom:10px; font-family:var(--ff-body); font-weight:600;}
  .why-card p{color:var(--text-muted); font-size:14px;}

  /* ---------- Data localization ---------- */
  .localization-grid{
    display:grid; grid-template-columns:1.15fr 0.85fr; gap:56px; align-items:start;
  }
  @media (max-width:900px){ .localization-grid{grid-template-columns:1fr; gap:32px;} }
  .localization-grid h2{margin:10px 0 18px;}
  .localization-body p{color:var(--text-muted); font-size:15px; line-height:1.65; margin-bottom:16px;}
  .localization-body p.localization-note{color:var(--text);}

  .localization-facts{display:flex; flex-direction:column; gap:22px;}
  .loc-fact{border-left:2px solid var(--gold); padding-left:18px;}
  .loc-fact-tag{
    font-family:var(--ff-mono); font-size:11.5px; color:var(--gold-soft);
    letter-spacing:0.03em; margin-bottom:6px;
  }
  .loc-fact-desc{font-size:13.5px; color:var(--text-muted); line-height:1.55;}

  .localization-disclaimer{
    margin-top:36px; padding-top:20px; border-top:1px solid var(--border-soft);
    font-family:var(--ff-mono); font-size:11.5px; color:var(--text-dim);
  }

  /* ---------- Solutions ---------- */
  .solutions-grid{
    display:grid; grid-template-columns:repeat(3,1fr); gap:20px;
  }
  @media (max-width:860px){ .solutions-grid{grid-template-columns:repeat(2,1fr);} }
  @media (max-width:560px){ .solutions-grid{grid-template-columns:1fr;} }
  .solution-card{
    background:var(--surface); border:1px solid var(--border-soft);
    padding:44px 24px 36px;
    display:flex; flex-direction:column; align-items:center; gap:28px;
    text-align:center;
    transition:border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
  }
  .solution-card:hover{border-color:var(--gold); background:var(--surface-2); transform:translateY(-3px);}
  .solution-card h3{
    font-family:var(--ff-mono); font-size:13px; font-weight:600;
    text-transform:uppercase; letter-spacing:0.07em; color:var(--text);
  }
  .solution-icon{width:56px; height:56px; color:var(--teal-soft); transition:color 0.2s ease;}
  .solution-icon svg{width:100%; height:100%;}
  .solution-card:hover .solution-icon{color:var(--gold-soft);}

  /* ---------- Products ---------- */
  .product-grid{
    display:grid; grid-template-columns:repeat(4,1fr); gap:20px;
  }
  @media (max-width:980px){ .product-grid{grid-template-columns:repeat(2,1fr);} }
  @media (max-width:560px){ .product-grid{grid-template-columns:1fr;} }
  .product-card[hidden]{display:none;}

  /* ---------- Product grid pagination ---------- */
  .grid-pagination{
    display:flex; align-items:center; justify-content:center; gap:8px;
    margin-top:32px; flex-wrap:wrap;
  }
  .grid-pagination button{
    font-family:var(--ff-mono); font-size:13px; color:var(--text-muted);
    background:var(--surface); border:1px solid var(--border-soft);
    width:34px; height:34px; display:flex; align-items:center; justify-content:center;
    transition:border-color 0.15s ease, color 0.15s ease;
  }
  .grid-pagination button:hover:not(:disabled){border-color:var(--gold); color:var(--gold-soft);}
  .grid-pagination button.active{border-color:var(--gold); color:var(--gold-soft); background:var(--surface-2);}
  .grid-pagination button:disabled{opacity:0.3; cursor:not-allowed;}
  .grid-pagination .pp-prev, .grid-pagination .pp-next{
    width:auto; padding:0 14px; gap:6px;
  }
  .grid-pagination .pp-ellipsis{
    width:34px; height:34px; display:flex; align-items:center; justify-content:center;
    color:var(--text-dim); font-family:var(--ff-mono); font-size:13px;
  }
  .product-card{
    background:var(--surface); border:1px solid var(--border-soft);
    padding:20px;
    position:relative; overflow:hidden;
    transition:border-color 0.2s ease, transform 0.2s ease;
  }
  .product-card:hover{border-color:var(--border); transform:translateY(-3px);}
  .product-card::after{
    content:"";
    position:absolute; left:0; right:0; top:-4%;
    height:2px;
    background:linear-gradient(90deg, transparent, var(--gold-soft), transparent);
    opacity:0;
    pointer-events:none;
  }
  .product-card:hover::after{
    animation:scanSweep 1s ease forwards;
  }
  @keyframes scanSweep{
    0%{ top:-4%; opacity:0; }
    12%{ opacity:1; }
    88%{ opacity:1; }
    100%{ top:104%; opacity:0; }
  }
  .product-thumb{
    height:136px; border:1px solid var(--border-soft); background:var(--bg-2);
    display:flex; align-items:center; justify-content:center; margin-bottom:16px;
    transition:border-color 0.2s ease;
  }
  .product-thumb svg{width:96px; height:96px; color:var(--teal-soft); opacity:0.9; transition:color 0.2s ease;}
  .product-card:hover .product-thumb svg{color:var(--gold-soft);}
  .product-thumb.gpu-explode{height:170px;}
  .product-thumb.gpu-explode svg{width:100%; height:100%;}
  /* Фото товара вместо SVG-иконки: <div class="product-thumb has-photo"><img src="assets/img/products/файл.jpg" alt="..."></div> */
  .product-thumb.has-photo{background:#ffffff; padding:8px;}
  .product-thumb.has-photo img{max-width:100%; max-height:100%; width:auto; height:auto; object-fit:contain; display:block;}
  @keyframes gpuFloat{ 0%,100%{transform:translateY(0);} 50%{transform:translateY(-1.6px);} }
  .gpu-card-float{animation:gpuFloat 2.6s ease-in-out infinite;}
  .product-brand{font-family:var(--ff-mono); font-size:11px; color:var(--gold-soft); text-transform:uppercase; letter-spacing:0.06em;}
  .product-card h3{font-size:14.5px; font-weight:600; margin:8px 0 10px; font-family:var(--ff-body); line-height:1.35;}
  .product-spec{font-family:var(--ff-mono); font-size:11.5px; color:var(--text-dim); line-height:1.6; margin-bottom:14px;}
  .product-price{
    display:flex; justify-content:space-between; align-items:baseline;
    border-top:1px solid var(--border-soft); padding-top:12px;
  }
  .product-price .price{font-family:var(--ff-display); font-weight:600; font-size:16.5px; color:var(--text);}
  .product-price .from{font-size:10.5px; color:var(--text-dim); text-transform:uppercase; letter-spacing:0.05em;}
  .product-stock{
    display:flex; align-items:center; gap:5px;
    font-family:var(--ff-mono); font-size:10.5px; color:var(--text-dim);
    margin-top:8px;
  }
  .product-stock .dot{width:5px; height:5px; border-radius:50%; background:var(--gold);}
  .product-stock.on-order .dot{background:var(--text-dim);}

  /* ---------- Sectors ---------- */
  .sector-cloud{display:flex; flex-wrap:wrap; gap:10px;}
  .sector-pill{
    font-family:var(--ff-mono); font-size:13px; color:var(--text-muted);
    border:1px solid var(--border); padding:9px 18px;
    transition:all 0.18s ease;
  }
  .sector-pill:hover{border-color:var(--teal); color:var(--teal-soft);}

  /* ---------- Blog teaser ---------- */
  .blog-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:24px;}
  @media (max-width:860px){ .blog-grid{grid-template-columns:1fr;} }
  .blog-card{border-top:1px solid var(--border); padding-top:18px;}
  .blog-card .tag{font-family:var(--ff-mono); font-size:11px; color:var(--teal-soft); text-transform:uppercase; letter-spacing:0.06em;}
  .blog-card h3{font-size:17px; font-weight:600; margin:12px 0; font-family:var(--ff-body); line-height:1.4;}
  .blog-card p{color:var(--text-muted); font-size:13.5px;}

  /* ---------- Info request card (pill-style form) ---------- */
  .info-card{
    background:var(--surface);
    border:1px solid var(--border-soft);
    padding:56px;
    max-width:640px;
  }
  @media (max-width:640px){ .info-card{padding:36px 22px;} }
  .info-card h2{font-size:clamp(24px,3vw,30px); margin-bottom:10px;}
  .info-card .info-sub{color:var(--text-muted); font-size:14.5px; margin-bottom:32px;}

  .info-form{display:flex; flex-direction:column; gap:16px;}
  .info-form input[type="text"],
  .info-form input[type="tel"],
  .info-form textarea{
    width:100%;
    background:var(--surface-2);
    border:1px solid var(--border);
    border-radius:10px;
    padding:16px 18px;
    color:var(--text);
    font-family:var(--ff-body);
    font-size:14.5px;
  }
  .info-form input::placeholder, .info-form textarea::placeholder{color:var(--text-dim);}
  .info-form textarea{min-height:60px; resize:vertical; font-family:var(--ff-body);}
  .info-form input:focus, .info-form textarea:focus{outline:none; border-color:var(--gold);}

  .phone-field{position:relative; display:flex; align-items:center;}
  .phone-field .flag-select{
    display:flex; align-items:center; gap:5px;
    position:absolute; left:6px; top:50%; transform:translateY(-50%);
    font-size:13.5px; color:var(--text-muted);
    padding:8px 10px 8px 8px;
    border-right:1px solid var(--border);
    pointer-events:none;
  }
  .phone-field .flag-select .flag{font-size:15px; line-height:1;}
  .phone-field .flag-select .caret{font-size:9px; color:var(--text-dim); margin-left:2px;}
  .info-form .phone-field input{padding-left:92px;}

  .btn-submit{
    width:100%;
    background:var(--surface-2);
    border:1px solid var(--border);
    color:var(--text);
    padding:16px;
    border-radius:10px;
    font-family:var(--ff-body);
    font-weight:600;
    font-size:14.5px;
    transition:background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
  }
  .btn-submit:hover{background:var(--gold); color:#fafafa; border-color:var(--gold);}

  .info-form .agree{
    display:flex; align-items:flex-start; gap:10px;
    font-size:13.5px; color:var(--text-muted);
    margin-top:6px; cursor:pointer;
  }
  .info-form .agree input[type="checkbox"]{
    width:18px; height:18px; flex:0 0 auto; margin-top:1px;
    accent-color:var(--gold);
  }
  .info-form .privacy-link{
    font-size:13.5px; color:var(--gold-soft); text-decoration:underline;
    margin-top:-8px; align-self:flex-start;
  }

  .form-success{
    display:none; align-items:center; gap:10px;
    font-family:var(--ff-mono); font-size:13px; color:var(--gold-soft);
    border:1px solid var(--gold); padding:12px 14px;
  }
  .form-success.show{display:flex;}

  /* ---------- Footer ---------- */
  footer{background:var(--bg-2); border-top:1px solid var(--border-soft); padding:64px 0 0;}
  .footer-grid{
    display:grid; grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:40px;
    padding-bottom:48px;
  }
  @media (max-width:860px){ .footer-grid{grid-template-columns:1fr 1fr; row-gap:32px;} }
  @media (max-width:560px){ .footer-grid{grid-template-columns:1fr;} }
  .footer-col h4{
    font-family:var(--ff-mono); font-size:12px; text-transform:uppercase; letter-spacing:0.08em;
    color:var(--text-dim); margin-bottom:18px;
  }
  .footer-col ul li{margin-bottom:11px; font-size:14px;}
  .footer-col ul a{color:var(--text-muted); transition:color 0.15s ease;}
  .footer-col ul a:hover{color:var(--gold-soft);}
  .footer-brand p{color:var(--text-muted); font-size:13.5px; margin:16px 0 20px; max-width:280px;}
  .footer-social-label{
    font-family:var(--ff-mono); font-size:10px; color:var(--text-dim);
    text-transform:uppercase; letter-spacing:0.07em; margin-bottom:10px;
  }
  .footer-social{display:flex; gap:12px;}
  .footer-social a{
    width:34px; height:34px; border:1px solid var(--border); display:flex; align-items:center; justify-content:center;
    color:var(--text-muted);
  }
  .footer-social a:hover{border-color:var(--gold); color:var(--gold-soft);}
  .footer-social svg{width:16px; height:16px;}
  .footer-contact li{font-family:var(--ff-mono); font-size:13px; color:var(--text-muted);}

  .footer-bottom{
    border-top:1px solid var(--border-soft);
    padding:20px 0;
    display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:10px;
    font-size:12px; color:var(--text-dim);
  }
  .footer-bottom a{color:var(--text-dim);}
  .footer-bottom a:hover{color:var(--gold-soft);}

  /* ---------- Reveal on scroll ---------- */
  .reveal{opacity:0; transform:translateY(16px); transition:opacity 0.6s ease, transform 0.6s ease;}
  .reveal.in{opacity:1; transform:translateY(0);}

  /* focus visibility */
  a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
    outline:2px solid var(--gold); outline-offset:2px;
  }

/* ================= Multi-page additions ================= */

/* ---------- Subpage hero / breadcrumb ---------- */
.page-hero{
  padding:52px 0 40px;
  border-bottom:1px solid var(--border-soft);
}
.breadcrumb{
  font-family:var(--ff-mono); font-size:11.5px; color:var(--text-dim);
  display:flex; align-items:center; gap:8px; margin-bottom:20px; flex-wrap:wrap;
}
.breadcrumb a{color:var(--text-dim); transition:color 0.15s ease;}
.breadcrumb a:hover{color:var(--gold-soft);}
.breadcrumb .sep{color:var(--border);}
.breadcrumb .current{color:var(--text-muted);}
.page-hero h1{font-size:clamp(28px,3.6vw,42px); margin-bottom:14px; max-width:760px;}
.page-hero p.lead{color:var(--text-muted); font-size:15.5px; max-width:640px;}
.page-hero-title{display:flex; align-items:flex-start; gap:16px;}
.page-hero-icon{width:38px; height:38px; color:var(--gold); flex:0 0 auto; margin-top:6px;}
@media (max-width:560px){ .page-hero-icon{width:30px; height:30px; margin-top:4px;} }

/* ---------- Category page ---------- */
.category-features{display:grid; grid-template-columns:repeat(2,1fr); gap:18px; margin:8px 0 8px;}
@media (max-width:700px){ .category-features{grid-template-columns:1fr;} }
.category-feature{border-left:2px solid var(--gold); padding-left:16px;}
.category-feature-title{font-weight:600; font-size:14.5px; margin-bottom:6px; color:var(--text);}
.category-feature-desc{font-size:13px; color:var(--text-muted); line-height:1.55;}

.category-brands{display:flex; flex-wrap:wrap; gap:24px 36px; align-items:center;}
.category-brands .brand-item{font-size:16px;}

/* ---------- Configurator page ---------- */
.configurator-layout{display:grid; grid-template-columns:1.3fr 0.9fr; gap:48px; align-items:start;}
@media (max-width:900px){ .configurator-layout{grid-template-columns:1fr;} }

.config-group{margin-bottom:30px;}
.config-group-label{
  font-family:var(--ff-mono); font-size:11px; color:var(--text-dim);
  text-transform:uppercase; letter-spacing:0.06em; margin-bottom:14px;
}
.config-options{display:flex; flex-wrap:wrap; gap:10px;}
.config-option{
  border:1px solid var(--border); background:var(--surface);
  padding:12px 16px; cursor:pointer; text-align:left;
  transition:border-color 0.15s ease, background 0.15s ease;
  min-width:150px; flex:1 1 auto;
}
.config-option:hover{background:var(--surface-2);}
.config-option.selected{border-color:var(--gold); background:var(--surface-2);}
.config-option .opt-name{font-size:13.5px; color:var(--text); display:block; margin-bottom:4px;}
.config-option .opt-price{font-family:var(--ff-mono); font-size:11px; color:var(--text-dim);}
.config-option.selected .opt-price{color:var(--gold-soft);}

.config-summary{
  position:sticky; top:96px;
  background:var(--surface); border:1px solid var(--border);
  padding:26px;
}
.config-summary h3{font-size:16px; margin-bottom:18px; font-family:var(--ff-body); font-weight:600;}
.config-summary-row{
  display:flex; justify-content:space-between; gap:10px;
  font-size:13px; color:var(--text-muted); padding:9px 0; border-bottom:1px solid var(--border-soft);
}
.config-summary-row .val{color:var(--text); text-align:right;}
.config-summary-total{
  display:flex; justify-content:space-between; align-items:baseline;
  margin:16px 0 20px; padding-top:14px; border-top:1px solid var(--border);
}
.config-summary-total .label{font-family:var(--ff-mono); font-size:11.5px; color:var(--text-dim); text-transform:uppercase; letter-spacing:0.05em;}
.config-summary-total .amount{font-family:var(--ff-display); font-weight:700; font-size:24px; color:var(--gold-soft);}
.config-summary-note{font-family:var(--ff-mono); font-size:11px; color:var(--text-dim); margin-top:14px;}

/* ---------- Pagination / next-prev ---------- */
.page-pagination{
  display:flex; justify-content:space-between; gap:20px;
  margin-top:8px; padding-top:28px; border-top:1px solid var(--border-soft);
  flex-wrap:wrap;
}
.page-pagination a{font-size:13.5px; color:var(--text);}
.page-pagination a:hover .pp-name{color:var(--gold-soft);}
.page-pagination .pp-dir{
  display:block; font-family:var(--ff-mono); font-size:10px; color:var(--text-dim);
  text-transform:uppercase; letter-spacing:0.06em; margin-bottom:5px;
}
.page-pagination .pp-next{text-align:right;}
.pp-name{transition:color 0.15s ease;}

/* ---------- Generic content spacing for sub-pages ---------- */
.subpage-section{padding:64px 0;}
.subpage-section + .subpage-section{border-top:1px solid var(--border-soft);}

/* ---------- Active nav state ---------- */
.nav-links a[aria-current="page"]{color:var(--text);}
.nav-links a[aria-current="page"]::after{width:100%;}

/* ---------- Illustration micro-animations (respects prefers-reduced-motion globally) ---------- */
@keyframes ledBlink{ 0%,100%{opacity:1;} 50%{opacity:0.15;} }
.led-blink{animation:ledBlink 2.4s ease-in-out infinite;}

@keyframes fanSpin{ from{transform:rotate(0deg);} to{transform:rotate(360deg);} }
.fan-blade{animation:fanSpin 2.6s linear infinite; transform-box:fill-box; transform-origin:center;}

@keyframes coolantFlow{ to{stroke-dashoffset:-16;} }
.coolant-flow{stroke-dasharray:2.6 2.2; animation:coolantFlow 1.6s linear infinite;}

@keyframes corePulse{ 0%,100%{opacity:0.35;} 50%{opacity:0.85;} }
.core-pulse{animation:corePulse 2.8s ease-in-out infinite;}

/* ---------- Spec comparison table ---------- */
.compare-wrap{overflow-x:auto; border:1px solid var(--border-soft);}
.compare-table{width:100%; border-collapse:collapse; min-width:760px;}
.compare-table th{
  font-family:var(--ff-mono); font-size:11px; color:var(--text-dim);
  text-transform:uppercase; letter-spacing:0.05em; text-align:left;
  padding:14px 16px; border-bottom:1px solid var(--border); background:var(--surface);
  white-space:nowrap;
}
.compare-table td{
  padding:16px; font-size:13.5px; color:var(--text-muted);
  border-bottom:1px solid var(--border-soft); vertical-align:top;
}
.compare-table tr:last-child td{border-bottom:none;}
.compare-table tr:hover td{background:var(--surface); color:var(--text);}
.compare-table td.ct-model{color:var(--text); font-weight:600;}
.compare-table td.ct-price{color:var(--gold-soft); font-family:var(--ff-mono); white-space:nowrap;}
.compare-table .ct-tag{
  display:inline-block; font-family:var(--ff-mono); font-size:10.5px; color:var(--text-dim);
  border:1px solid var(--border); padding:2px 7px; margin-top:4px;
}

/* ---------- FAQ accordion ---------- */
.faq-list{display:flex; flex-direction:column; border-top:1px solid var(--border-soft);}
.faq-item{border-bottom:1px solid var(--border-soft);}
.faq-q{
  display:flex; justify-content:space-between; align-items:center; gap:20px;
  width:100%; text-align:left; background:none; border:none; cursor:pointer;
  padding:20px 4px; font-family:var(--ff-body); font-size:15px; font-weight:600; color:var(--text);
}
.faq-q .faq-plus{
  font-family:var(--ff-mono); font-size:18px; color:var(--gold); flex:0 0 auto;
  transition:transform 0.25s ease; line-height:1;
}
.faq-item.open .faq-q .faq-plus{transform:rotate(45deg);}
.faq-a{
  max-height:0; overflow:hidden; transition:max-height 0.3s ease;
}
.faq-item.open .faq-a{max-height:220px;}
.faq-a p{color:var(--text-muted); font-size:14px; line-height:1.6; padding:0 4px 20px;}