:root{
    --yellow:#FBBA00; --yellow-d:#e0a600; --yellow-soft:#FFF3CF;
    --ink:#262522; --ink-2:#4a4945; --gray:#727271; --gray-l:#9a9a98;
    --line:#D9DADA; --line-2:#ededec; --paper:#ffffff; --paper-2:#f7f6f3; --paper-3:#f0efeb;
    --pos:#1e7a4d;
    --maxw:1480px; --radius:6px;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  .logo-link{display:inline-flex;align-items:center;line-height:0;text-decoration:none;border-radius:4px;transition:opacity .15s}
  .logo-link:hover{opacity:.78}
  .logo-link:focus-visible{outline:2px solid var(--yellow);outline-offset:3px}
  body{font-family:'Golos Text',sans-serif;color:var(--ink);background:var(--paper);line-height:1.6;-webkit-font-smoothing:antialiased;font-size:16px}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 44px}
  .mono{font-family:'JetBrains Mono',monospace}
  a{color:inherit;text-decoration:none}
  img{display:block;max-width:100%}

  /* ---------- HEADER ---------- */
  header.top{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
  .top-bar{display:flex;align-items:center;gap:28px;height:74px}
  .logo{height:30px;width:auto}
  nav.main{display:flex;gap:24px;margin-left:8px;font-size:14.5px;font-weight:500;color:var(--ink-2)}
  nav.main a{padding:4px 0;border-bottom:2px solid transparent;transition:.15s}
  nav.main a:hover,nav.main a.active{border-color:var(--yellow);color:var(--ink)}
  .top-right{margin-left:auto;display:flex;align-items:center;gap:18px}
  .phone{font-family:'JetBrains Mono',monospace;font-weight:600;font-size:14.5px;color:var(--ink)}
  .phone small{display:block;font-family:'Golos Text';font-weight:400;font-size:10.5px;color:var(--gray)}
  .btn{font-family:'Golos Text';font-weight:600;font-size:14.5px;border-radius:5px;padding:11px 20px;cursor:pointer;border:1.5px solid transparent;transition:.15s;display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
  .btn-primary{background:var(--yellow);color:var(--ink)}
  .btn-primary:hover{background:var(--yellow-d)}
  .btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
  .btn-ghost:hover{border-color:var(--ink)}
  .btn svg{width:16px;height:16px}

  /* ---------- BREADCRUMBS ---------- */
  .crumbs{font-size:12.5px;color:var(--gray);padding:16px 0 0;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
  .crumbs a:hover{color:var(--ink)}
  .crumbs .sep{color:var(--line)}
  .crumbs .cur{color:var(--ink);font-weight:600}

  /* ---------- HERO ---------- */
  .hero{display:grid;grid-template-columns:1.05fr .95fr;gap:54px;padding:26px 0 8px;align-items:start}
  .eyebrow{font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--gray);display:flex;align-items:center;gap:10px;margin-bottom:14px}
  .eyebrow::before{content:"";width:22px;height:2px;background:var(--yellow)}
  h1{font-family:'Golos Text';font-weight:800;font-size:clamp(38px,5vw,58px);line-height:.98;letter-spacing:-.02em;margin-bottom:6px}
  .subtitle{font-size:18px;color:var(--ink-2);font-weight:500;margin-bottom:22px;max-width:40ch}
  .benefits{display:flex;flex-direction:column;gap:13px;margin-bottom:26px}
  .benefit{display:grid;grid-template-columns:26px 1fr;gap:13px;align-items:start}
  .benefit .ic{width:26px;height:26px;border-radius:6px;background:var(--yellow-soft);display:flex;align-items:center;justify-content:center;margin-top:1px}
  .benefit .ic svg{width:15px;height:15px;color:var(--yellow-d)}
  .benefit b{font-weight:700}
  .benefit span{font-size:15px;line-height:1.45;color:var(--ink-2)}
  .benefit span b{color:var(--ink)}
  .cta-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
  .cta-note{font-size:12.5px;color:var(--gray);margin-top:12px}

  /* hero visual */
  .visual{position:relative}
  .stage{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);position:relative;overflow:hidden;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center}
  .stage::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 38%, #fff 0%, var(--paper-2) 70%)}
  .stage::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;background:var(--yellow);opacity:.07;border-radius:50%}
  #mainImg{position:relative;max-height:90%;width:auto;object-fit:contain;filter:drop-shadow(0 18px 28px rgba(0,0,0,.13))}
  .cap{position:absolute;left:16px;bottom:14px;font-family:'JetBrains Mono',monospace;font-size:11.5px;color:var(--gray);background:rgba(255,255,255,.8);padding:4px 9px;border-radius:4px;z-index:3}
  .thumbs{display:flex;gap:9px;margin-top:12px}
  .thumb{flex:1;background:var(--paper-2);border:1.5px solid var(--line);border-radius:5px;padding:6px;cursor:pointer;aspect-ratio:1/1.15;display:flex;align-items:center;justify-content:center;transition:.15s}
  .thumb img{max-height:100%;width:auto;object-fit:contain}
  .thumb:hover{border-color:var(--gray)}
  .thumb.active{border-color:var(--yellow);box-shadow:0 0 0 1px var(--yellow)}
  .thumb-lab{font-family:'JetBrains Mono',monospace;font-size:9px;text-align:center;color:var(--gray);margin-top:4px}
  .probe-note{margin-top:12px;font-size:13.5px;color:var(--ink-2);background:var(--paper-2);border-left:3px solid var(--yellow);padding:10px 14px;border-radius:0 5px 5px 0;min-height:44px}
  .probe-note b{color:var(--ink)}

  /* ---------- SPECS AT A GLANCE ---------- */
  .glance{margin:30px 0 0}
  .glance-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
  .gcell{background:var(--paper);padding:18px 16px;display:flex;flex-direction:column;gap:8px;min-height:118px}
  .gcell .gic{width:22px;height:22px;color:var(--yellow-d)}
  .gcell .glab{font-size:11.5px;color:var(--gray);text-transform:uppercase;letter-spacing:.04em;font-weight:500}
  .gcell .gval{font-family:'JetBrains Mono',monospace;font-weight:700;font-size:17px;line-height:1.1;color:var(--ink);margin-top:auto}
  .gcell .gval small{font-weight:400;font-size:12px;color:var(--gray);display:block;margin-top:2px}
  .gcell.hot{background:#fffaf0}
  .gcell.hot .glab{color:var(--yellow-d);font-weight:700}

  /* ---------- STICKY SUBNAV ---------- */
  /* ---------- CONTENT LAYOUT: side TOC + content ---------- */
  .content-grid{display:grid;grid-template-columns:248px 1fr;gap:48px;align-items:start;padding-top:18px}
  .toc-rail{position:sticky;top:98px;display:flex;flex-direction:column;gap:3px}
  .toc-rail .rt{font-family:'JetBrains Mono';font-size:11px;color:var(--gray);text-transform:uppercase;letter-spacing:.12em;margin-bottom:8px;padding-left:14px}
  .toc-rail a{display:flex;align-items:center;gap:11px;padding:11px 14px;border-left:3px solid transparent;border-radius:0 5px 5px 0;font-size:14.5px;font-weight:500;color:var(--gray);cursor:pointer;transition:.15s;line-height:1.25}
  .toc-rail a .tn{font-family:'JetBrains Mono';font-size:11px;color:var(--line);font-weight:700;transition:.15s}
  .toc-rail a:hover{color:var(--ink);background:var(--paper-2)}
  .toc-rail a.active{color:var(--ink);font-weight:700;border-left-color:var(--yellow);background:#fffdf6}
  .toc-rail a.active .tn{color:var(--yellow-d)}
  .content-col{min-width:0}
  .content-col .blk:first-child{padding-top:0}
  /* длинные абзацы держим читаемой ширины даже на широком мониторе */
  .lead,.position{max-width:74ch}

  /* ---------- SECTIONS ---------- */
  section.blk{padding:56px 0;border-bottom:1px solid var(--line-2);scroll-margin-top:130px}
  .sec-h{display:flex;align-items:baseline;gap:14px;margin-bottom:26px}
  .sec-h .n{font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--yellow-d);font-weight:700}
  h2{font-family:'Golos Text';font-weight:700;font-size:clamp(22px,3vw,30px);letter-spacing:-.015em;line-height:1.1}
  .lead{font-size:16.5px;color:var(--ink-2);max-width:70ch;margin-bottom:8px}
  .position{background:#727271;color:#ffffff;border-radius:var(--radius);padding:26px 30px;font-size:17px;line-height:1.5;position:relative;overflow:hidden}
  .position b{color:var(--yellow)}
  .position::after{content:"";position:absolute;right:-30px;bottom:-50px;width:160px;height:160px;background:var(--yellow);opacity:.1;border-radius:50%}

  /* spec table */
  .spec-table{width:100%;border-collapse:collapse;font-size:14.5px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
  .spec-table tr.group td{background:#727271;color:#fff;font-weight:700;font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;padding:10px 18px;font-family:'JetBrains Mono'}
  .spec-table td{padding:13px 18px;border-bottom:1px solid var(--line-2);vertical-align:top}
  .spec-table td.k{width:300px;color:var(--gray);font-weight:500}
  .spec-table td.v{color:var(--ink);font-weight:500}
  .spec-table tr:nth-child(even):not(.group) td{background:var(--paper-2)}
  .spec-table .v .mono{font-weight:600}
  .badge-y{display:inline-block;background:var(--yellow-soft);color:#8a6a00;font-size:11px;font-weight:700;padding:1px 7px;border-radius:10px;margin-left:6px;font-family:'JetBrains Mono'}

  /* principle */
  .principle{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}
  .principle .art{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
  .feat-list{display:flex;flex-direction:column;gap:18px}
  .feat{display:grid;grid-template-columns:46px 1fr;gap:16px}
  .feat .tag{font-family:'JetBrains Mono';font-weight:700;font-size:12px;color:var(--ink);background:var(--yellow);border-radius:5px;height:fit-content;padding:5px 0;text-align:center}
  .feat h3{font-family:'Golos Text';font-weight:700;font-size:16px;margin-bottom:3px}
  .feat p{font-size:14px;color:var(--ink-2)}

  /* applications */
  .apps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .app{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--paper);transition:.15s}
  .app:hover{border-color:var(--gray);box-shadow:0 8px 24px rgba(0,0,0,.06)}
  .app .scene{height:150px;background:var(--paper-2);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:center}
  .app .body{padding:18px 20px 20px}
  .app .ind{font-family:'JetBrains Mono';font-size:10.5px;color:var(--gray);text-transform:uppercase;letter-spacing:.1em;margin-bottom:7px}
  .app h3{font-family:'Golos Text';font-weight:700;font-size:16.5px;margin-bottom:8px}
  .app p{font-size:13.5px;color:var(--ink-2);margin-bottom:12px}
  .app .ftag{display:inline-block;background:var(--yellow-soft);color:#8a6a00;font-family:'JetBrains Mono';font-weight:700;font-size:11px;padding:3px 9px;border-radius:4px}

  /* docs center */
  .key-approvals{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:24px;padding-bottom:22px;border-bottom:1px solid var(--line-2)}
  .key-approvals .kt{font-family:'JetBrains Mono';font-size:11px;color:var(--gray);text-transform:uppercase;letter-spacing:.1em;margin-right:4px}
  .cert{display:flex;align-items:center;gap:8px;background:var(--paper);border:1px solid var(--line);border-radius:30px;padding:7px 14px 7px 9px;font-size:13px;font-weight:600}
  .cert .ck{width:18px;height:18px;border-radius:50%;background:var(--yellow);display:flex;align-items:center;justify-content:center;flex:none}
  .cert .ck svg{width:11px;height:11px;color:var(--ink)}
  .cert.star{background:#727271;color:#fff;border-color:#727271}
  .cert.star .ck{background:var(--yellow)}
  .docs2{display:grid;grid-template-columns:270px 1fr;gap:30px;align-items:start}
  .doc-pane{min-height:300px}
  .doc-count{font-family:'JetBrains Mono';font-size:12px;color:var(--gray);margin-bottom:14px}
  .doc-list{display:flex;flex-direction:column;gap:9px}
  .doc{display:flex;align-items:center;gap:15px;border:1px solid var(--line);border-radius:5px;padding:13px 16px;background:var(--paper);transition:.15s;cursor:pointer}
  .doc:hover{border-color:var(--yellow);background:#fffdf6}
  .doc .ft{font-family:'JetBrains Mono';font-weight:700;font-size:10.5px;color:#fff;background:var(--gray);border-radius:4px;padding:5px 7px;letter-spacing:.03em;min-width:42px;text-align:center;flex:none}
  .doc .ft.pdf{background:#c0392b} .doc .ft.doc{background:#2a5699} .doc .ft.exe{background:#5a3e85} .doc .ft.zip{background:#6b6b6b} .doc .ft.step{background:#1e7a4d}
  .doc .dt{flex:1}
  .doc .dt b{display:block;font-size:14px;font-weight:600;line-height:1.3}
  .doc .dt small{font-size:11.5px;color:var(--gray);font-family:'JetBrains Mono'}
  .doc .dl{width:20px;height:20px;color:var(--gray);flex:none}
  .doc:hover .dl{color:var(--yellow-d)}
  .cat-rail{display:flex;flex-direction:column;gap:4px;position:sticky;top:140px;order:-1}
  .cat-rail .rt{font-family:'JetBrains Mono';font-size:11px;color:var(--gray);text-transform:uppercase;letter-spacing:.1em;margin-bottom:6px;padding-left:2px}
  .cat-tab{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 14px;border:1px solid var(--line);border-left:3px solid transparent;border-radius:5px;background:var(--paper);cursor:pointer;font-size:14px;font-weight:500;color:var(--ink-2);transition:.15s;text-align:left;width:100%;font-family:'Golos Text'}
  .cat-tab:hover{border-color:var(--gray)}
  .cat-tab.active{border-left-color:var(--yellow);background:#fffdf6;color:var(--ink);font-weight:700}
  .cat-tab .cc{font-family:'JetBrains Mono';font-size:12px;color:var(--gray);background:var(--paper-3);border-radius:20px;padding:1px 9px;font-weight:600;flex:none}
  .cat-tab.active .cc{background:var(--yellow);color:var(--ink)}

  /* form */
  .form-wrap{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
  .form-intro p{font-size:15px;color:var(--ink-2);margin-bottom:14px}
  .form-intro .why{display:flex;flex-direction:column;gap:10px;margin-top:18px}
  .form-intro .why div{display:flex;gap:10px;font-size:14px;align-items:flex-start}
  .form-intro .why .d{width:7px;height:7px;border-radius:50%;background:var(--yellow);margin-top:7px;flex:none}
  form.quote{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
  .field{margin-bottom:15px}
  .field label{display:block;font-size:12.5px;font-weight:600;color:var(--ink-2);margin-bottom:5px}
  .field label .req{color:var(--yellow-d)}
  .field input,.field select,.field textarea{width:100%;border:1.5px solid var(--line);border-radius:5px;padding:10px 12px;font-family:'Golos Text';font-size:14px;background:#fff;transition:.15s}
  .field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--yellow)}
  .field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
  .form-msg{display:none;background:#eaf6ef;border:1px solid #bfe3cd;color:var(--pos);border-radius:5px;padding:14px 16px;font-size:14px;font-weight:600;margin-top:6px}

  /* related */
  .related{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .rel{border:1px solid var(--line);border-radius:var(--radius);padding:20px;background:var(--paper);transition:.15s}
  .rel:hover{border-color:var(--gray)}
  .rel .rt{font-family:'JetBrains Mono';font-size:10.5px;color:var(--gray);text-transform:uppercase;letter-spacing:.1em;margin-bottom:7px}
  .rel h3{font-family:'Golos Text';font-weight:700;font-size:16px;margin-bottom:6px}
  .rel p{font-size:13px;color:var(--ink-2);margin-bottom:12px}
  .rel a{font-size:13px;font-weight:600;color:var(--yellow-d);display:inline-flex;gap:5px;align-items:center}

  /* footer */
  footer.site{background:var(--ink);color:#cfcdc6;margin-top:0;padding:48px 0 30px}
  .foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px;padding-bottom:34px;border-bottom:1px solid #3b3a36}
  footer.site .logo{height:26px;margin-bottom:14px;filter:brightness(0) invert(1) opacity(.85)}
  footer.site p{font-size:13px;color:var(--gray-l);max-width:34ch}
  .foot-col h4{font-size:13px;color:#fff;font-weight:700;margin-bottom:12px}
  .foot-col a{display:block;font-size:13px;color:#cfcdc6;padding:4px 0;transition:.15s}
  .foot-col a:hover{color:var(--yellow)}
  .foot-bot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-top:20px;font-size:12px;color:var(--gray-l);font-family:'JetBrains Mono'}

  /* sticky mobile cta */
  .sticky-cta{position:fixed;left:0;right:0;bottom:0;z-index:60;background:#fff;border-top:1px solid var(--line);padding:12px 16px;display:none;gap:10px;box-shadow:0 -6px 20px rgba(0,0,0,.07)}
  .sticky-cta .btn{flex:1;justify-content:center}

  /* prototype ribbon */
  .ribbon{background:var(--ink);color:var(--yellow);font-family:'JetBrains Mono';font-size:11.5px;text-align:center;padding:7px;letter-spacing:.08em}
  .ribbon b{color:#fff}

  @media(max-width:980px){
    .hero{grid-template-columns:1fr;gap:32px}
    .glance-grid{grid-template-columns:repeat(3,1fr)}
    .principle,.docs2,.form-wrap{grid-template-columns:1fr;gap:26px}
    .cat-rail{position:static;order:-1;flex-direction:row;flex-wrap:wrap}
    .cat-rail .rt{width:100%}
    .apps,.related{grid-template-columns:1fr}
    nav.main,.phone{display:none}
    .top-right .btn-ghost{display:none}
  }
  @media(max-width:1080px){
    .content-grid{grid-template-columns:1fr;gap:0}
    .toc-rail{position:sticky;top:74px;z-index:40;flex-direction:row;gap:4px;overflow-x:auto;
      background:rgba(255,255,255,.95);backdrop-filter:blur(8px);
      border-bottom:1px solid var(--line);margin:0 -44px 8px;padding:8px 44px}
    .toc-rail .rt{display:none}
    .toc-rail a{border-left:none;border-bottom:2px solid transparent;border-radius:0;white-space:nowrap;padding:9px 4px}
    .toc-rail a.active{border-left:none;border-bottom-color:var(--yellow);background:transparent}
    .toc-rail a .tn{display:none}
  }
  @media(max-width:560px){
    .glance-grid{grid-template-columns:repeat(2,1fr)}
    .field-row{grid-template-columns:1fr}
    .foot-grid{grid-template-columns:1fr 1fr}
    .sticky-cta{display:flex}
    body{padding-bottom:72px}
    .wrap{padding:0 20px}
    .toc-rail{margin:0 -20px 8px;padding:8px 20px}
  }

  /* ===================================================================
     VARIANT B — ТЭК-РБУ: full-width dark hero + horizontal TOC
     =================================================================== */
  .hero-full{position:relative;min-height:476px;border-radius:10px;overflow:hidden;margin:26px 0 0;background:#1c1b18;display:flex;align-items:center}
  .hf-art{position:absolute;right:0;top:0;bottom:0;width:52%;display:flex;align-items:center;justify-content:center}
  .hf-grad{position:absolute;inset:0;background:linear-gradient(90deg,#1c1b18 42%,transparent 82%);z-index:1;pointer-events:none}
  .hf-l{position:relative;z-index:2;width:54%;padding:52px 54px}
  .hf-l .eyebrow{color:var(--yellow)}
  .hf-l h1{color:#fff}
  .hf-l .subtitle{color:rgba(255,255,255,.72);max-width:36ch}
  .hf-l .benefit span{color:rgba(255,255,255,.8)}
  .hf-l .benefit span b{color:#fff}
  .hf-l .benefit .ic{background:rgba(251,186,0,.1);border:1px solid rgba(251,186,0,.22)}
  .hf-l .benefit .ic svg{color:var(--yellow)}
  .hf-l .btn-ghost{border-color:rgba(255,255,255,.3);color:#fff}
  .hf-l .btn-ghost:hover{border-color:#fff}
  .hf-l .cta-note{color:rgba(255,255,255,.4)}

  /* horizontal TOC */
  .toc-h-wrap{position:sticky;top:74px;z-index:40;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
  .toc-h-bar{display:flex;gap:0;overflow-x:auto}
  .toc-h-bar a{display:flex;align-items:center;gap:8px;padding:14px 18px;font-size:14px;font-weight:500;color:var(--gray);border-bottom:2px solid transparent;white-space:nowrap;transition:.15s;cursor:pointer}
  .toc-h-bar a .tn{font-family:'JetBrains Mono',monospace;font-size:10px;color:var(--gray-l)}
  .toc-h-bar a:hover{color:var(--ink)}
  .toc-h-bar a.active{color:var(--ink);font-weight:700;border-bottom-color:var(--yellow)}
  .toc-h-bar a.active .tn{color:var(--yellow-d)}
  .content-full{padding-top:10px}
  .content-full section.blk{scroll-margin-top:140px}

  /* ===================================================================
     VARIANT C — ТЭК-ЭМБУ: engineering density, no TOC
     =================================================================== */
  .gcell.hot-p{background:#fff8f0}
  .gcell.hot-p .glab{color:#b35900;font-weight:700}
  .content-notoc{padding-top:32px}
  .content-notoc section.blk{scroll-margin-top:98px}

  /* photo carousel */
  .sec-with-carousel{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
  .photo-carousel{position:relative;user-select:none}
  .pc-viewport{overflow:hidden;border-radius:var(--radius);background:var(--paper-2);border:1px solid var(--line);aspect-ratio:4/3}
  .pc-track{display:flex;height:100%;transition:transform .32s cubic-bezier(.4,0,.2,1)}
  .pc-slide{flex:0 0 100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:28px;position:relative;overflow:hidden}
  .pc-slide img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
  .pc-slide .pc-ph{display:flex;flex-direction:column;align-items:center;gap:12px;position:relative;z-index:1;text-align:center}
  .pc-slide .pc-ph svg{width:44px;height:44px;color:var(--gray);opacity:.5}
  .pc-slide .pc-ph span{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--gray);text-transform:uppercase;letter-spacing:.1em}
  .pc-slide .pc-ph .pc-ph-label{font-size:12px;color:var(--gray-l);margin-top:4px}
  /* placeholder slot styling */
  .pc-slide.pc-placeholder{border:2px dashed var(--line);border-radius:var(--radius)}
  .pc-nav{position:absolute;top:50%;transform:translateY(-50%);width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.92);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:5;transition:.15s;box-shadow:0 2px 8px rgba(0,0,0,.1)}
  .pc-nav:hover{background:#fff;border-color:var(--gray)}
  .pc-nav svg{width:16px;height:16px;color:var(--ink)}
  .pc-prev{left:10px}
  .pc-next{right:10px}
  .pc-dots{display:flex;gap:6px;justify-content:center;margin-top:10px}
  .pc-dot{width:7px;height:7px;border-radius:50%;background:var(--line);cursor:pointer;transition:.15s;border:none;padding:0}
  .pc-dot.active{background:var(--yellow);transform:scale(1.2)}
  .pc-caption{margin-top:8px;font-size:12.5px;color:var(--gray);font-family:'JetBrains Mono',monospace;min-height:18px;text-align:center}
  @media(max-width:980px){.sec-with-carousel{grid-template-columns:1fr;gap:28px}}

  @media(max-width:1200px){.hf-l{width:62%;padding:40px 40px}}
  @media(max-width:900px){
    .hero-full{flex-direction:column;min-height:auto}
    .hf-art{position:static;width:100%;min-height:220px;order:-1;opacity:.5}
    .hf-grad{background:linear-gradient(180deg,transparent 20%,#1c1b18 85%)}
    .hf-l{width:100%;padding:30px 32px 36px}
    .toc-h-wrap{margin:0 -20px;padding:0 20px}
  }