:root{
      --bg:#07111f;
      --bg2:#0b1729;
      --card:rgba(255,255,255,.075);
      --card2:rgba(255,255,255,.115);
      --text:#eef6ff;
      --muted:#a9bad0;
      --line:rgba(255,255,255,.14);
      --brand:#49d3ff;
      --brand2:#7c5cff;
      --ok:#55f2a8;
      --warn:#ffd166;
      --shadow:0 24px 80px rgba(0,0,0,.42);
      --radius:24px;
      --max:1180px;
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      background:
        radial-gradient(circle at 20% -10%, rgba(73,211,255,.22), transparent 34%),
        radial-gradient(circle at 90% 0%, rgba(124,92,255,.27), transparent 32%),
        linear-gradient(180deg, var(--bg), var(--bg2) 42%, #08101d);
      min-height:100vh;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed; inset:0;
      background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
                        linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
      background-size: 42px 42px;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.75), transparent 75%);
      pointer-events:none;
    }
    a{color:inherit;text-decoration:none}
    .wrap{max-width:var(--max);margin:auto;padding:0 22px}
    .nav{
      position:sticky;top:0;z-index:50;
      backdrop-filter: blur(18px);
      background:rgba(7,17,31,.72);
      border-bottom:1px solid var(--line);
    }
    .admin-bar .nav{top:32px}
    .nav-inner{
      min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px;
    }
    .logo{display:flex;align-items:center;gap:18px;font-weight:900;letter-spacing:0}
    .brand-mark{width:50px;height:50px;display:block;filter:drop-shadow(0 8px 18px rgba(73,211,255,.16))}
    .brand-name{display:flex;align-items:baseline;gap:5px;font-size:24px;line-height:1;font-weight:900}
    .brand-funda{background:linear-gradient(135deg,#26f4de,#1596ff);-webkit-background-clip:text;background-clip:text;color:transparent}
    @media(max-width:560px){
      .admin-bar .nav{top:46px}
      .brand-mark{width:44px;height:44px}
      .brand-name{font-size:20px}
    }
    .nav-links{display:flex;align-items:center;gap:22px;color:var(--muted);font-size:14px}
    .nav-links a:hover{color:var(--text)}
    .btn{
      border:1px solid var(--line);
      background:rgba(255,255,255,.08);
      color:var(--text);
      padding:11px 16px;border-radius:999px;
      display:inline-flex;align-items:center;gap:10px;
      font-weight:800;font-size:14px;
      transition:.25s transform,.25s background,.25s border-color;
      cursor:pointer;
    }
    .btn:hover{transform:translateY(-2px);background:rgba(255,255,255,.13);border-color:rgba(255,255,255,.28)}
    .btn.primary{
      border:0;background:linear-gradient(135deg,var(--brand),var(--brand2));
      color:white;box-shadow:0 14px 36px rgba(73,211,255,.22)
    }
    .hero{padding:86px 0 48px;position:relative}
    .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:42px;align-items:center}
    .eyebrow{
      display:inline-flex;align-items:center;gap:10px;
      padding:8px 12px;border-radius:999px;border:1px solid var(--line);
      background:rgba(255,255,255,.07);color:#cfe7ff;font-size:13px;font-weight:800;
    }
    .pulse{width:9px;height:9px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 7px rgba(85,242,168,.12)}
    h1{font-size:clamp(44px,7vw,82px);line-height:.94;margin:24px 0 20px;letter-spacing:-.075em}
    .grad{background:linear-gradient(135deg,#fff,var(--brand) 55%,#b7a8ff);-webkit-background-clip:text;background-clip:text;color:transparent}
    .lead{font-size:clamp(17px,2vw,21px);line-height:1.65;color:var(--muted);max-width:680px;margin:0 0 30px}
    .hero-actions{display:flex;gap:14px;flex-wrap:wrap}
    .stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:32px;max-width:620px}
    .stat{border:1px solid var(--line);background:rgba(255,255,255,.06);border-radius:18px;padding:16px}
    .stat strong{font-size:24px;display:block}
    .stat span{font-size:13px;color:var(--muted)}
    .panel{
      border:1px solid var(--line);
      border-radius:32px;
      background:linear-gradient(180deg,rgba(255,255,255,.12),rgba(255,255,255,.055));
      box-shadow:var(--shadow);
      overflow:hidden;
      position:relative;
    }
    .panel:before{
      content:"";position:absolute;inset:-2px;
      background:radial-gradient(circle at 30% 0%,rgba(73,211,255,.25),transparent 33%);
      pointer-events:none;
    }
    .calc-demo{padding:18px;position:relative}
    .browser{
      height:44px;display:flex;align-items:center;gap:8px;padding:0 14px;
      border-bottom:1px solid var(--line);color:var(--muted);font-size:13px
    }
    .dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.28)}
    .demo-body{padding:22px}
    .input-row{display:grid;grid-template-columns:1fr 90px;gap:10px;margin:12px 0}
    .field{
      border:1px solid var(--line);border-radius:16px;background:rgba(7,17,31,.55);
      padding:13px 14px;color:var(--text);font-weight:700
    }
    .result{
      margin-top:18px;border-radius:22px;padding:18px;
      background:linear-gradient(135deg,rgba(73,211,255,.16),rgba(124,92,255,.15));
      border:1px solid rgba(73,211,255,.22)
    }
    .result small{color:var(--muted)}
    .result b{font-size:34px;display:block;margin-top:4px}
    .tabs{display:flex;gap:10px;flex-wrap:wrap;margin:0 0 26px}
    .tab{
      padding:10px 14px;border:1px solid var(--line);border-radius:999px;
      color:var(--muted);background:rgba(255,255,255,.055);cursor:pointer;font-weight:800;font-size:14px;
    }
    .tab.active{color:#06101d;background:var(--brand);border-color:transparent}
    section{padding:64px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:28px}
    h2{font-size:clamp(30px,4vw,48px);letter-spacing:-.055em;line-height:1;margin:0}
    .section-head p{color:var(--muted);max-width:520px;line-height:1.6;margin:0}
    .searchbox{
      width:100%;border:1px solid var(--line);border-radius:22px;background:rgba(255,255,255,.08);
      padding:16px 18px;color:var(--text);font-size:16px;outline:0;margin-bottom:18px;
    }
    .grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .tool-card{
      border:1px solid var(--line);border-radius:22px;background:var(--card);
      padding:18px;min-height:154px;position:relative;overflow:hidden;
      transition:.25s transform,.25s background,.25s border-color;
    }
    .tool-card:hover{transform:translateY(-5px);background:var(--card2);border-color:rgba(73,211,255,.38)}
    .tool-card .icon{
      width:44px;height:44px;border-radius:15px;
      display:grid;place-items:center;background:rgba(73,211,255,.13);margin-bottom:18px;font-size:22px
    }
    .tool-card .icon svg{width:30px;height:30px;display:block}
    .eng-icon .icon-line{stroke:#eef6ff;stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round;fill:none}
    .eng-icon .icon-accent{stroke:#49d3ff;stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round;fill:none}
    .eng-icon .icon-fill{fill:#49d3ff}
    .tool-card h3{margin:0 0 8px;font-size:18px;letter-spacing:-.02em}
    .tool-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.5}
    .badge{
      position:absolute;right:14px;top:14px;font-size:11px;color:#06101d;background:var(--ok);
      padding:5px 8px;border-radius:999px;font-weight:900
    }
    .feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .feature{
      border:1px solid var(--line);background:rgba(255,255,255,.07);
      border-radius:26px;padding:24px;min-height:230px
    }
    .feature b{font-size:20px;display:block;margin:12px 0}
    .feature p{color:var(--muted);line-height:1.65;margin:0}
    .split{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px;align-items:stretch}
    .glass{border:1px solid var(--line);background:rgba(255,255,255,.075);border-radius:30px;padding:28px}
    .steps{display:grid;gap:14px}
    .step{display:grid;grid-template-columns:42px 1fr;gap:14px;align-items:start}
    .num{height:42px;border-radius:15px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand2));font-weight:950}
    .step h3{margin:0 0 6px}.step p{margin:0;color:var(--muted);line-height:1.55}
    .cta{
      text-align:center;border:1px solid rgba(73,211,255,.22);border-radius:34px;
      padding:48px 24px;background:
        radial-gradient(circle at 50% 0%,rgba(73,211,255,.22),transparent 40%),
        rgba(255,255,255,.07);
    }
    .cta p{max-width:680px;margin:16px auto 24px;color:var(--muted);line-height:1.7}
    footer{border-top:1px solid var(--line);padding:34px 0;color:var(--muted)}
    .foot{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:14px}
    .mobile-menu{display:none}
    .page-main{
      padding:64px 0 80px;
    }
    .page-content{
      color:var(--text);
    }
    .page-header h1{
      font-size:clamp(36px,5vw,64px);
      letter-spacing:-.045em;
      line-height:1;
      margin:0 0 28px;
    }
    .entry-content{
      color:#17202a;
    }
    .entry-content > * + *{
      margin-top:24px;
    }
    .entry-content .pf-pressure-drop-liquid,
    .entry-content .pf-generic-calc{
      margin-left:0;
      margin-right:0;
    }
    @media(max-width:920px){
      .hero-grid,.split{grid-template-columns:1fr}
      .grid{grid-template-columns:repeat(2,1fr)}
      .feature-grid{grid-template-columns:1fr}
      .nav-links{display:none}
      .mobile-menu{display:inline-flex}
      .hero{padding-top:52px}
    }
    @media(max-width:560px){
      .grid,.stats{grid-template-columns:1fr}
      .hero-actions .btn{width:100%;justify-content:center}
      .section-head{display:block}
      .section-head p{margin-top:12px}
    }