:root{
    --hvac-blue:#2E3F75;
    --hvac-blue-2:#425896;
    --hvac-red:#E34B3F;
    --hvac-red-dark:#C93B30;
    --hvac-water:#6EB7CC;
    --hvac-green:#94C94C;
    --hvac-lime:#B8D85C;
    --hvac-sage:#DCE7C6;
    --hvac-cream:#F4F2E8;
    --hvac-text:#24304F;
    --hvac-muted:#66748A;
    --hvac-border:rgba(46,63,117,.10);
    --hvac-shadow:0 22px 55px rgba(36,48,79,.10);
    --hvac-shadow-soft:0 12px 30px rgba(36,48,79,.08);
  }

  .hvac-news-hero{
    position:relative;
    overflow:hidden;
    padding:78px 0 50px;
    background:
      radial-gradient(850px 420px at 0% 0%, rgba(110,183,204,.28), transparent 60%),
      radial-gradient(850px 420px at 100% 10%, rgba(148,201,76,.18), transparent 58%),
      linear-gradient(135deg, rgba(36,55,102,.94) 0%, rgba(46,63,117,.92) 52%, rgba(66,88,150,.90) 100%),
      url('/assets/images/home-hero.png') center center / cover no-repeat;
    border-bottom:1px solid rgba(255,255,255,.08);
  }

  .hvac-news-hero::before{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg, rgba(12,18,34,.18) 0%, rgba(12,18,34,.28) 100%);
    pointer-events:none;
  }

  .hvac-news-hero > .container{
    position:relative;
    z-index:1;
  }

  .hvac-breadcrumbs{
    display:flex;
    flex-wrap:wrap;
    gap:.55rem;
    align-items:center;
    margin-bottom:1rem;
    color:rgba(255,255,255,.82);
    font-weight:700;
    font-size:.92rem;
  }

  .hvac-breadcrumbs a{
    color:#fff;
    text-decoration:none;
  }

  .hvac-breadcrumbs a:hover{
    text-decoration:underline;
  }

  .hvac-pill{
    display:inline-flex;
    align-items:center;
    gap:.55rem;
    padding:.62rem .98rem;
    border-radius:999px;
    font-size:.8rem;
    font-weight:800;
    letter-spacing:.08em;
    text-transform:uppercase;
  }

  .hvac-pill-light{
    background:rgba(255,255,255,.16);
    color:#fff;
    border:1px solid rgba(255,255,255,.20);
    backdrop-filter:blur(8px);
  }

  .hvac-page-title{
    margin:0 0 14px;
    color:#fff;
    font-family:'Montserrat',sans-serif;
    font-size:clamp(2.1rem, 4.5vw, 3.9rem);
    line-height:1.04;
    font-weight:900;
    letter-spacing:-.03em;
    text-shadow:0 10px 30px rgba(0,0,0,.18);
    max-width:980px;
  }

  .hvac-page-sub{
    color:rgba(255,255,255,.86);
    font-size:1.02rem;
    line-height:1.8;
    font-weight:500;
    max-width:860px;
    margin:0 0 1rem;
  }

  .hvac-post-meta-head{
    margin:0;
    padding:0;
    list-style:none;
    display:flex;
    flex-wrap:wrap;
    gap:14px;
  }

  .hvac-post-meta-head li{
    color:rgba(255,255,255,.86);
    display:flex;
    align-items:center;
    gap:8px;
    font-size:14px;
    font-weight:600;
  }

  .hvac-wrap{
    padding:40px 0 72px;
    background:linear-gradient(180deg, #f7fbff 0%, #ffffff 100%);
  }

  .hvac-main-card{
    background:#fff;
    border:1px solid var(--hvac-border);
    border-radius:30px;
    box-shadow:var(--hvac-shadow);
    overflow:hidden;
  }

  .hvac-article-top{
    padding:24px 24px 0;
  }

  .hvac-feature-wrap{
    margin-top:2px;
  }

  .hvac-feature-frame{
    position:relative;
    border-radius:24px;
    overflow:hidden;
    background:#eef4f9;
    border:1px solid var(--hvac-border);
    box-shadow:var(--hvac-shadow-soft);
    max-height:560px;
  }

  .hvac-feature-frame img{
    width:100%;
    height:100%;
    max-height:560px;
    object-fit:contain;
    display:block;
    background:#eef4f9;
  }

  .hvac-body{
    padding:24px;
  }

  .hvac-prose{
    color:var(--hvac-text);
    line-height:1.9;
    font-size:16.5px;
  }

  .hvac-prose > *:first-child{
    margin-top:0 !important;
  }

  .hvac-prose h2,
  .hvac-prose h3,
  .hvac-prose h4{
    color:var(--hvac-blue);
    font-family:'Montserrat',sans-serif;
    font-weight:900;
    margin-top:26px;
    margin-bottom:12px;
    line-height:1.2;
  }

  .hvac-prose p{
    margin-bottom:1.1rem;
    color:#33495d;
  }

  .hvac-prose a{
    color:var(--hvac-red);
    font-weight:800;
    text-decoration:none;
  }

  .hvac-prose a:hover{
    color:var(--hvac-blue);
    text-decoration:underline;
  }

  .hvac-prose img{
    max-width:100%;
    height:auto;
    border-radius:18px;
    box-shadow:var(--hvac-shadow-soft);
    display:block;
    margin:1.25rem auto;
  }

  .hvac-prose ul,
  .hvac-prose ol{
    padding-left:1.35rem;
    margin-bottom:1rem;
    color:#33495d;
  }

  .hvac-prose blockquote{
    border-left:4px solid rgba(227,75,63,.32);
    padding:.95rem 1.1rem;
    background:rgba(110,183,204,.06);
    border-radius:14px;
    color:#2f475d;
    margin:1.2rem 0;
  }

  .hvac-lock{
    background:rgba(110,183,204,.08);
    border:1px solid rgba(110,183,204,.18);
    border-radius:18px;
    padding:20px;
  }

  .hvac-lock strong{
    color:var(--hvac-blue);
    font-family:'Montserrat',sans-serif;
    font-weight:800;
  }

  .hvac-divider{
    border-top:1px solid rgba(46,63,117,.10);
    margin:24px 0;
  }

  .hvac-section-title{
    margin:0 0 14px;
    color:var(--hvac-blue);
    font-family:'Montserrat',sans-serif;
    font-size:1.2rem;
    line-height:1.15;
    font-weight:900;
  }

  .hvac-tags{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    align-items:center;
  }

  .hvac-tag{
    display:inline-flex;
    align-items:center;
    padding:.42rem .78rem;
    border-radius:999px;
    border:1px solid rgba(46,63,117,.12);
    background:#fff;
    font-size:13.5px;
    font-weight:800;
    color:var(--hvac-text);
    text-decoration:none;
    transition:transform .18s ease, border-color .18s ease, background .18s ease, color .18s ease;
  }

  .hvac-tag:hover{
    transform:translateY(-1px);
    border-color:rgba(227,75,63,.26);
    background:rgba(227,75,63,.04);
    color:var(--hvac-red);
  }

  .hvac-share-row{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:14px;
    flex-wrap:wrap;
  }

  .hvac-share-label{
    color:var(--hvac-blue);
    font-family:'Montserrat',sans-serif;
    font-weight:900;
  }

  .hvac-share{
    display:flex;
    gap:10px;
    flex-wrap:wrap;
  }

  .hvac-share a{
    width:42px;
    height:42px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    border-radius:14px;
    border:1px solid rgba(46,63,117,.12);
    background:#fff;
    color:var(--hvac-text);
    text-decoration:none;
    transition:transform .18s ease, border-color .18s ease, background .18s ease, color .18s ease;
  }

  .hvac-share a:hover{
    transform:translateY(-2px);
    border-color:rgba(227,75,63,.24);
    background:rgba(227,75,63,.04);
    color:var(--hvac-red);
  }

  .hvac-gallery{

    margin-top:4px;
  }

  .hvac-gimg{
    border-radius:18px;
    border:1px solid rgba(46,63,117,.10);
    overflow:hidden;
    background:#fff;
    box-shadow:var(--hvac-shadow-soft);
    height:100%;
  }

  .hvac-gimg a{
    display:block;
    cursor:pointer;
  }

  .hvac-gimg img{
    width:100%;
    height:220px;
    object-fit:cover;
    display:block;
    transition:transform .2s ease;
  }

  .hvac-gimg a:hover img{
    transform:scale(1.03);
  }

  .hvac-gcap{
    padding:9px 11px;
    color:#4f6479;
    font-size:13.5px;
    line-height:1.5;
  }

  .hvac-sidebar-stick{
    position:sticky;
    top:120px;
  }

  .hvac-lightbox{
    position:fixed;
    inset:0;
    z-index:9999;
    display:none;
    align-items:center;
    justify-content:center;
    padding:22px;
    background:rgba(8,18,30,.86);
    backdrop-filter:blur(6px);
  }

  .hvac-lightbox.is-open{
    display:flex;
  }

  .hvac-lightbox-dialog{
    position:relative;
    width:min(1100px, 96vw);
    max-height:92vh;
    display:flex;
    flex-direction:column;
    align-items:center;
  }

  .hvac-lightbox-close{
    position:absolute;
    top:-8px;
    right:-8px;
    width:46px;
    height:46px;
    border:none;
    border-radius:999px;
    background:#fff;
    color:#10263A;
    font-size:22px;
    font-weight:900;
    box-shadow:0 10px 30px rgba(0,0,0,.24);
    z-index:2;
  }

  .hvac-lightbox-imgwrap{
    width:100%;
    background:#0f1720;
    border-radius:18px;
    overflow:hidden;
    border:1px solid rgba(255,255,255,.12);
    box-shadow:0 20px 50px rgba(0,0,0,.35);
  }

  .hvac-lightbox-img{
    width:100%;
    max-height:78vh;
    object-fit:contain;
    display:block;
    background:#0f1720;
  }

  .hvac-lightbox-cap{
    color:#fff;
    font-size:14px;
    line-height:1.6;
    text-align:center;
    margin-top:12px;
    max-width:900px;
  }

  @media (max-width: 991.98px){
    .hvac-news-hero{
      padding:56px 0 34px;
    }

    .hvac-wrap{
      padding:32px 0 56px;
    }

    .hvac-sidebar-stick{
      position:static;
      top:auto;
    }
  }

  @media (max-width: 575.98px){
    .hvac-main-card{
      border-radius:22px;
    }

    .hvac-article-top,
    .hvac-body{
      padding:18px;
    }

    .hvac-feature-frame{
      border-radius:18px;
    }

    .hvac-share-row{
      align-items:flex-start;
    }

    .hvac-gimg img{
      height:170px;
    }

    .hvac-lightbox{
      padding:14px;
    }
  }