/* ============================================================
   VistaNova M&A Partners — Energy, Power & Utilities industry page.
   Page-specific styles; shared components live in site.css + the
   design-system token files. Only per-page treatments live here:
   the rotating full-bleed hero, the interactive energy value-chain
   network, the sub-industry grid, labelled prose blocks, buyer /
   service rows, checklists, FAQ disclosures, and the indigo
   "why VistaNova" card overrides.
   ============================================================ */

/* full-bleed rotating hero */
  #top{position:relative;overflow:hidden;background:#0b1024;min-height:70vh;display:flex;align-items:flex-end}
  @media(min-width:900px){#top{min-height:85vh}}
  .vn-heroimg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;display:block;z-index:0;opacity:0;animation:vnHeroCycle 18s linear infinite}
  .vn-heroimg:nth-of-type(1){animation-delay:0s}
  .vn-heroimg:nth-of-type(2){animation-delay:6s}
  .vn-heroimg:nth-of-type(3){animation-delay:12s}
  @keyframes vnHeroCycle{0%{opacity:1}33.33%{opacity:1}38.88%{opacity:0}94.44%{opacity:0}100%{opacity:1}}
  @media(prefers-reduced-motion:reduce){.vn-heroimg{animation:none}.vn-heroimg:nth-of-type(1){opacity:1}}
  #vn-hero-scrim{position:absolute;inset:0;z-index:1;pointer-events:none;background:linear-gradient(to top right,rgba(6,10,30,.95) 0%,rgba(6,10,30,.84) 26%,rgba(8,13,38,.58) 54%,rgba(10,16,44,.26) 80%,rgba(12,18,50,.10) 100%)}
  @media(max-width:899px){#vn-hero-scrim{background:linear-gradient(to top right,rgba(6,10,30,.97) 0%,rgba(6,10,30,.92) 28%,rgba(8,13,38,.78) 58%,rgba(10,16,44,.52) 100%)}}
  #vn-hero-inner{position:relative;z-index:2;width:100%;padding:150px 0 clamp(56px,9vh,104px)}
  @media(min-width:900px){#vn-hero-inner{padding:190px 0 clamp(72px,10vh,120px)}}
  .vn-hero-btn{background:#fff;color:var(--indigo-900);border-color:#fff}
  .vn-hero-btn:hover{background:var(--cyan-500);border-color:var(--cyan-500);color:var(--indigo-900)}
  .vn-hero-btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,0.55)}
  .vn-hero-btn--ghost:hover{background:var(--cyan-500);border-color:var(--cyan-500);color:var(--indigo-900)}

  /* CTA hover sweep (shared with other pages) */
  .vn-cta-anim{gap:10px;position:relative;transition:background .25s ease,border-color .25s ease,color .25s ease,transform .25s ease,box-shadow .25s ease}
  .vn-cta-anim .vn-i{transition:transform .25s ease}
  .vn-cta-anim:hover{transform:translateY(-2px)}
  .vn-cta-anim:hover .vn-i{transform:translateX(4px)}
  .vn-cta-anim::after{content:"";position:absolute;left:32px;right:32px;bottom:11px;height:1.5px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .28s ease}
  .vn-cta-anim:hover::after{transform:scaleX(1)}
  .vn-outline-anim{gap:10px;position:relative;transition:background .25s ease,border-color .25s ease,color .25s ease,transform .25s ease}
  .vn-outline-anim .vn-i{transition:transform .25s ease}
  .vn-outline-anim:hover{transform:translateY(-2px)}
  .vn-outline-anim:hover .vn-i{transform:translateX(4px)}
  .vn-outline-anim::after{content:"";position:absolute;left:32px;right:32px;bottom:11px;height:1.5px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .28s ease}
  .vn-outline-anim:hover::after{transform:scaleX(1)}
  #vn-nav.solid .vn-navcta:hover{background:var(--cyan-500);border-color:var(--cyan-500);color:var(--indigo-900)}

  /* labelled prose blocks on indigo */
  .vn-wa-icon{background:rgba(0,188,212,0.12);border:1px solid rgba(0,188,212,0.45);color:var(--cyan-500);transition:background .3s ease,border-color .3s ease,color .3s ease,transform .4s cubic-bezier(.2,.8,.2,1)}
  .vn-wa-block{transition:transform .35s ease,border-color .3s ease}
  .vn-wa-block:hover{transform:translateY(-4px);border-top-color:#fff}
  .vn-wa-block:hover .vn-wa-icon{background:var(--cyan-500);border-color:var(--cyan-500);color:var(--indigo-800);transform:translateY(-2px) rotate(-8deg) scale(1.1)}

  /* light labelled prose blocks (diligence / buyers) */
  .vn-lb-block{transition:transform .35s ease,border-top-color .3s ease}
  .vn-lb-icon{background:rgba(19,30,95,0.05);border:1px solid rgba(19,30,95,0.18);color:var(--indigo-800);transition:background .3s ease,border-color .3s ease,color .3s ease,transform .4s cubic-bezier(.2,.8,.2,1)}
  .vn-lb-block:hover{transform:translateY(-4px);border-top-color:var(--cyan-500)}
  .vn-lb-block:hover .vn-lb-icon{background:var(--indigo-800);border-color:var(--indigo-800);color:#fff;transform:rotate(-8deg) scale(1.08)}

  /* buyer / service rows */
  .vn-buyer-row{position:relative;transition:transform .3s ease,box-shadow .3s ease,background .3s ease}
  .vn-buyer-row .vn-specicon{transition:background .3s ease,border-color .3s ease,color .3s ease,transform .4s cubic-bezier(.2,.8,.2,1)}
  .vn-buyer-title{color:var(--indigo-800);transition:color .25s ease}
  .vn-buyer-row:hover{transform:translateY(-5px);background:#fff;box-shadow:var(--shadow-lg);border-radius:var(--radius-sm);z-index:2}
  .vn-buyer-row:hover .vn-specicon{background:var(--indigo-800);border-color:var(--indigo-800);color:#fff;transform:rotate(-8deg) scale(1.08)}
  .vn-buyer-row:hover .vn-buyer-title{color:var(--cyan-600)}
  .vn-svc-arrow{opacity:0;transform:translateX(-6px);transition:opacity .25s ease,transform .25s ease;color:var(--cyan-600)}
  .vn-buyer-row:hover .vn-svc-arrow{opacity:1;transform:translateX(0)}
  .vn-svc-static{position:relative}
  .vn-svc-static .vn-specicon{opacity:.75}
  .vn-svc-tag{font-family:var(--font-ui);font-size:10.5px;font-weight:700;letter-spacing:0.14em;text-transform:uppercase;color:var(--ink-500);border:1px solid var(--color-border);border-radius:999px;padding:3px 10px;white-space:nowrap}

  /* value chain network */
  #vn-net-fig{margin:0;position:relative}
  #vn-net{width:100%;height:auto;display:block;overflow:visible}
  #vn-net .lk .ln{stroke:rgba(19,30,95,.20);stroke-width:1.4;transition:stroke-dashoffset .95s cubic-bezier(.22,.61,.36,1),stroke .3s ease,opacity .35s ease}
  #vn-net.anim .lk .ln{stroke-dasharray:1400;stroke-dashoffset:1400}
  #vn-net.anim.in .lk .ln{stroke-dashoffset:0}
  #vn-net .lk .fl{stroke:var(--cyan-500);stroke-width:2.2;stroke-linecap:round;stroke-dasharray:7 15;opacity:0;transition:opacity .3s ease}
  #vn-net .lk{transition:opacity .35s ease}
  #vn-net .lk.lit .ln{stroke:rgba(19,30,95,.38)}
  #vn-net .lk.lit .fl{opacity:1;animation:vnFlowFwd .85s linear infinite}
  #vn-net .lk.lit.rev .fl{animation-name:vnFlowRev}
  #vn-net .lk.dim{opacity:.14}
  @keyframes vnFlowFwd{to{stroke-dashoffset:-44}}
  @keyframes vnFlowRev{to{stroke-dashoffset:44}}
  #vn-net .nd{cursor:pointer;transform-box:fill-box;transform-origin:center;transition:opacity .5s ease,transform .38s cubic-bezier(.2,.8,.2,1)}
  #vn-net.anim .nd{opacity:0;transform:scale(.84)}
  #vn-net.anim.in .nd{opacity:1;transform:none}
  #vn-net .nd .core{fill:#fff;stroke:rgba(19,30,95,.26);stroke-width:1.5;transition:fill .3s ease,stroke .3s ease,filter .3s ease}
  #vn-net .nd .glyph{color:#6b779f;transition:color .3s ease}
  #vn-net .nd .lab{font-family:var(--font-ui);font-size:13px;font-weight:700;letter-spacing:.01em;fill:#59648c;transition:fill .3s ease}
  #vn-net .nd .halo{fill:none;stroke:var(--cyan-500);stroke-width:1.1;opacity:0;transition:opacity .35s ease,r .35s ease}
  #vn-net .nd:focus{outline:none}
  #vn-net .nd:focus-visible .halo{opacity:.7}
  #vn-net .nd.on,#vn-net.anim.in .nd.on{transform:scale(1.07)}
  #vn-net .nd.on .core{fill:var(--indigo-800);stroke:var(--cyan-500);filter:drop-shadow(0 0 16px rgba(0,188,212,.5))}
  #vn-net .nd.on .glyph{color:var(--cyan-500)}
  #vn-net .nd.on .lab{fill:var(--indigo-800)}
  #vn-net .nd.on .halo{opacity:.85}
  #vn-net .nd.near .core{fill:#F2F5FF;stroke:rgba(19,30,95,.55)}
  #vn-net .nd.near .glyph{color:var(--indigo-800)}
  #vn-net .nd.near .lab{fill:var(--indigo-800)}
  #vn-net .nd.dim{opacity:.26}
  #vn-net-panel{border-left:2px solid var(--cyan-500);padding:4px 0 4px 22px;min-height:132px}
  #vn-net-wrap{display:grid;grid-template-columns:minmax(0,1fr);gap:34px;align-items:center}
  @media(min-width:1080px){#vn-net-wrap{grid-template-columns:minmax(0,1fr) 320px}}
  .vn-net-list{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--color-border)}
  .vn-net-item{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--color-border)}
  #vn-net-fig,#vn-net-panel{display:block}
  @media(max-width:899px){#vn-net-fig,#vn-net-panel{display:none}}
  @media(min-width:900px){.vn-net-list{display:none}}
  @media(prefers-reduced-motion:reduce){#vn-net .lk .ln{stroke-dashoffset:0}#vn-net .nd{opacity:1;transform:none}#vn-net .lk.lit .fl{animation:none}}

  /* sub-industry grid */
  #vn-subgrid{display:grid;grid-template-columns:minmax(0,1fr);gap:22px}
  @media(min-width:640px){#vn-subgrid{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media(min-width:1080px){#vn-subgrid{grid-template-columns:repeat(4,minmax(0,1fr))}}
  .vn-sub{position:relative;aspect-ratio:4/5;border-radius:var(--radius-md);overflow:hidden;background:#0e1424;opacity:0;transform:translateY(20px);transition:opacity .65s cubic-bezier(.22,.61,.36,1),transform .65s cubic-bezier(.22,.61,.36,1),box-shadow .45s ease}
  .vn-sub.in{opacity:1;transform:none}
  .vn-sub img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;transition:filter .5s ease-in-out,transform .6s cubic-bezier(.22,.61,.36,1)}
  .vn-sub-scrim{position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(10,15,56,0) 38%,rgba(10,15,56,.52) 66%,rgba(10,15,56,.92) 100%);transition:background .5s ease}
  .vn-sub-body{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:20px 20px 22px}
  .vn-sub-rule{display:block;width:34px;height:2px;background:var(--cyan-500);transform-origin:left;margin-bottom:12px}
  .vn-sub-name{font-family:var(--font-display);font-size:1.0625rem;font-weight:700;line-height:1.25;color:#fff;margin:0;text-wrap:pretty}
  .vn-sub-desc{font-family:var(--font-body);font-size:12.5px;line-height:1.6;color:#E4E9F7;margin:10px 0 0;text-wrap:pretty}
  @media(hover:hover) and (min-width:900px){
    .vn-sub img{filter:grayscale(1) contrast(1.05)}
    .vn-sub-rule{opacity:0;transform:scaleX(.25);transition:opacity .4s ease .05s,transform .45s cubic-bezier(.22,.61,.36,1) .05s}
    .vn-sub-desc{max-height:0;opacity:0;margin-top:0;overflow:hidden;transition:max-height .5s cubic-bezier(.22,.61,.36,1),opacity .4s ease,margin-top .5s ease}
    .vn-sub:hover{transform:translateY(-6px);box-shadow:0 26px 54px rgba(10,15,56,.34)}
    .vn-sub:hover img{filter:grayscale(0) contrast(1);transform:scale(1.08)}
    .vn-sub:hover .vn-sub-scrim{background:linear-gradient(180deg,rgba(10,15,56,0) 22%,rgba(10,15,56,.62) 54%,rgba(10,15,56,.95) 100%)}
    .vn-sub:hover .vn-sub-rule{opacity:1;transform:scaleX(1)}
    .vn-sub:hover .vn-sub-desc{max-height:300px;opacity:1;margin-top:10px}
  }
  @media(prefers-reduced-motion:reduce){.vn-sub{opacity:1!important;transform:none!important}}

  /* checklists */
  .vn-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
  .vn-list li{display:flex;gap:14px;align-items:flex-start;font-family:var(--font-body);font-size:15.5px;line-height:1.7;color:var(--ink-700);text-wrap:pretty}
  .vn-list li::before{content:"";flex:none;width:7px;height:7px;margin-top:9px;background:var(--cyan-500);transform:rotate(45deg)}

  /* FAQ */
  details.vn-disc > summary::-webkit-details-marker{display:none}
  details.vn-disc > summary{list-style:none;color:var(--indigo-800)}
  details.vn-disc[open] > summary .vn-caret{transform:rotate(180deg)}
  details.vn-disc > summary:hover{color:var(--cyan-600)}
  details.vn-disc[open]{border-top-color:var(--cyan-500)}
  details.vn-disc:not([open]) > summary:hover .vn-caret{color:var(--cyan-600);transform:translateY(3px)}

  #why-vistanova .vn-service-card{background:var(--indigo-800);border:1px solid rgba(255,255,255,0.16);border-top:2px solid rgba(0,188,212,0.5);box-shadow:0 16px 36px rgba(0,0,0,.34)}
  #why-vistanova .vn-service-card:hover{border-color:rgba(255,255,255,0.3);border-top-color:var(--cyan-500);transform:translateY(-7px);box-shadow:0 26px 54px rgba(0,0,0,.44)}
  #why-vistanova .vn-service-title{color:#fff}
  #why-vistanova .vn-glyph{background:transparent;border-color:rgba(255,255,255,0.28);color:var(--cyan-500);transition:background .3s ease,border-color .3s ease,color .3s ease,transform .4s cubic-bezier(.2,.8,.2,1)}
  #why-vistanova .vn-service-card:hover .vn-glyph{background:var(--cyan-500);border-color:var(--cyan-500);color:var(--indigo-800);transform:rotate(-8deg) scale(1.08)}