#kc-tools{
    /* ---- Light theme, tuned to Kuncham Controls' blue (trust/engineering)
       + orange (safety/CTA) brand pairing. Edit these six lines to match
       any future palette change on kunchamcontrols.com — everything below
       reads from these variables, nothing else needs to change. ---- */
    --kc-bg:#f5f8fb; --kc-panel:#ffffff; --kc-panel-2:#eef3f8; --kc-line:#dbe4ee;
    --kc-text:#152435; --kc-muted:#607086; --kc-amber:#e2680a; --kc-cyan:#0c487b;
    --kc-red:#d8342f; --kc-green:#188a4e; --kc-grid:rgba(15,60,100,.04);
    font-family:var(--primary-font,'Inter',sans-serif); color:var(--kc-text);
    background:
      linear-gradient(var(--kc-grid) 1px,transparent 1px) 0 0/100% 28px,
      linear-gradient(90deg,var(--kc-grid) 1px,transparent 1px) 0 0/28px 100%,
      var(--kc-bg);
    padding:44px 20px 60px; border-radius:2px;
  }
  #kc-tools *{box-sizing:border-box;}
  #kc-tools .kc-wrap{max-width:1180px;margin:0 auto;}
  #kc-tools .kc-eyebrow{
    font-family:var(--primary-font,'Inter',sans-serif); letter-spacing:.18em; text-transform:uppercase;
    color:var(--kc-amber); font-size:11.5px; display:flex; align-items:center; gap:10px;
  }
  #kc-tools .kc-eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--kc-amber);
    box-shadow:0 0 0 3px rgba(226,104,10,.16); animation:kc-blink 1.6s ease-in-out infinite;}
  @keyframes kc-blink{0%,100%{opacity:1}50%{opacity:.35}}
  #kc-tools h1{font-size:clamp(26px,3.4vw,38px);line-height:1.12;margin:10px 0 8px;font-weight:700;letter-spacing:-.01em;color:#0f2438;}
  #kc-tools .kc-sub{color:var(--kc-muted);font-size:15px;max-width:640px;line-height:1.55;margin-bottom:22px;}

  /* ambient loop-current rail — the signature element */
  .kc-rail{position:relative;height:26px;margin:6px 0 30px;overflow:hidden;border-top:1px solid var(--kc-line);border-bottom:1px solid var(--kc-line);}
  .kc-rail::before{content:"4 mA";position:absolute;left:0;top:50%;transform:translateY(-50%);font-family:var(--primary-font,'Inter',sans-serif);font-size:10px;color:var(--kc-muted);}
  .kc-rail::after{content:"20 mA";position:absolute;right:0;top:50%;transform:translateY(-50%);font-family:var(--primary-font,'Inter',sans-serif);font-size:10px;color:var(--kc-muted);}
  .kc-rail-line{position:absolute;left:46px;right:52px;top:50%;height:1px;background:linear-gradient(90deg,transparent,rgba(226,104,10,.32) 8%,rgba(226,104,10,.32) 92%,transparent);}
  .kc-rail-dash{position:absolute;top:50%;left:46px;width:14px;height:2px;background:var(--kc-amber);border-radius:2px;transform:translateY(-50%);
    animation:kc-dash 3.2s linear infinite;box-shadow:0 0 6px rgba(226,104,10,.5);}
  .kc-rail-dash:nth-child(2){animation-delay:.8s} .kc-rail-dash:nth-child(3){animation-delay:1.6s} .kc-rail-dash:nth-child(4){animation-delay:2.4s}
  @keyframes kc-dash{0%{left:46px;opacity:0}8%{opacity:1}92%{opacity:1}100%{left:calc(100% - 66px);opacity:0}}
  @media (prefers-reduced-motion:reduce){.kc-rail-dash,.kc-eyebrow::before{animation:none}}

  .kc-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px;}
  .kc-tab{font-family:var(--primary-font,'Inter',sans-serif);font-size:12px;letter-spacing:.03em;padding:9px 14px;border-radius:3px;
    border:1px solid var(--kc-line);background:var(--kc-panel);color:var(--kc-muted);cursor:pointer;transition:.15s;white-space:nowrap;}
  .kc-tab:hover{color:var(--kc-text);border-color:#b9c7d8;background:var(--kc-panel-2);}
  .kc-tab.active{color:#fff;background:var(--kc-amber);border-color:var(--kc-amber);font-weight:600;}
  .kc-tab:focus-visible{outline:2px solid var(--kc-cyan);outline-offset:2px;}

  .kc-panel{display:none;} .kc-panel.active{display:block;animation:kc-fade .25s ease;}
  @keyframes kc-fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
  .kc-cat-title{font-size:13px;color:var(--kc-cyan);font-family:var(--primary-font,'Inter',sans-serif);letter-spacing:.06em;text-transform:uppercase;margin:0 0 14px;}

  .kc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px;}
  .kc-card{background:var(--kc-panel);border:1px solid var(--kc-line);border-radius:8px;padding:18px 18px 16px;display:flex;flex-direction:column;gap:12px;
    box-shadow:0 1px 2px rgba(15,40,70,.04);}
  .kc-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;}
  .kc-card-head h3{font-size:15px;margin:0;font-weight:600;color:#0f2438;}
  .kc-formula{font-family:var(--primary-font,'Inter',sans-serif);font-size:11px;color:var(--kc-muted);background:var(--kc-panel-2);
    border:1px solid var(--kc-line);border-radius:4px;padding:6px 9px;overflow-x:auto;white-space:nowrap;}
  .kc-inputs{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:9px;}
  .kc-field-label-row{display:flex;align-items:center;justify-content:space-between;gap:6px;margin-bottom:4px;}
  .kc-field label{display:block;font-size:10.5px;color:var(--kc-muted);font-family:var(--primary-font,'Inter',sans-serif);text-transform:uppercase;letter-spacing:.03em;}
  .kc-field input,.kc-field select{width:100%;background:var(--kc-panel-2);border:1px solid var(--kc-line);color:var(--kc-text);
    border-radius:4px;padding:7px 8px;font-family:var(--primary-font,'Inter',sans-serif);font-size:13px;}
  .kc-field input:focus,.kc-field select:focus{outline:2px solid var(--kc-cyan);outline-offset:1px;border-color:var(--kc-cyan);}
  .kc-btn{align-self:flex-start;background:var(--kc-amber);color:#fff;border:none;font-weight:600;font-size:12.5px;
    padding:8px 16px;border-radius:5px;cursor:pointer;letter-spacing:.02em;transition:.15s;}
  .kc-btn:hover{background:#c1590b;} .kc-btn:focus-visible{outline:2px solid var(--kc-cyan);outline-offset:2px;}
  .kc-out{min-height:14px;}
  .kc-readout{font-family:var(--primary-font,'Inter',sans-serif);font-size:12.5px;color:var(--kc-text);display:flex;justify-content:space-between;gap:10px;
    border-top:1px dashed var(--kc-line);padding:5px 0;}
  .kc-readout b{color:var(--kc-amber);font-weight:600;text-align:right;}
  .kc-readout.warn b{color:var(--kc-red);} .kc-readout.ok b{color:var(--kc-green);}
  .kc-note{font-size:11px;color:var(--kc-muted);line-height:1.4;}

  /* --- info / help button + dialog (explains every variable in plain language) --- */
  .kc-help-btn{width:18px;height:18px;flex:none;border-radius:50%;border:1px solid var(--kc-line);background:var(--kc-panel);
    color:var(--kc-cyan);font-family:var(--primary-font,'Inter',sans-serif);font-size:11px;font-weight:700;line-height:16px;text-align:center;
    cursor:pointer;padding:0;transition:.15s;}
  .kc-help-btn:hover{background:var(--kc-cyan);border-color:var(--kc-cyan);color:#fff;}
  .kc-about-btn{width:22px;height:22px;line-height:20px;font-size:12px;margin-top:1px;}
  dialog.kc-dialog{border:none;border-radius:10px;padding:0;max-width:420px;width:92vw;
    box-shadow:0 24px 60px rgba(10,25,45,.28);color:var(--kc-text);font-family:var(--primary-font,'Inter',sans-serif);}
  dialog.kc-dialog::backdrop{background:rgba(10,22,38,.45);}
  .kc-dialog-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding:16px 18px;
    border-bottom:1px solid var(--kc-line);background:var(--kc-panel-2);border-radius:10px 10px 0 0;}
  .kc-dialog-title{font-weight:700;font-size:15px;color:#0f2438;}
  .kc-dialog-close{background:none;border:none;font-size:20px;line-height:1;cursor:pointer;color:var(--kc-muted);padding:0 2px;}
  .kc-dialog-close:hover{color:var(--kc-red);}
  .kc-dialog-body{padding:16px 18px 18px;font-size:13.5px;line-height:1.6;}
  .kc-dialog-body p{margin:0;}
  .kc-dialog-unit{display:inline-block;margin-top:12px;font-family:var(--primary-font,'Inter',sans-serif);font-size:11px;color:var(--kc-cyan);
    background:rgba(15,95,166,.08);border:1px solid rgba(15,95,166,.25);padding:3px 8px;border-radius:5px;}

  /* --- animated visuals --- */
  .kc-viz{height:74px;position:relative;}
  .kc-gauge{width:100%;height:74px;}
  .kc-gauge .arc{fill:none;stroke:var(--kc-line);stroke-width:8;}
  .kc-gauge .arcfill{fill:none;stroke:var(--kc-cyan);stroke-width:8;stroke-linecap:round;transition:stroke-dasharray .6s cubic-bezier(.4,0,.2,1);}
  .kc-gauge .needle{stroke:var(--kc-amber);stroke-width:2.5;stroke-linecap:round;transform-origin:70px 68px;transition:transform .6s cubic-bezier(.4,0,.2,1);}
  .kc-gauge .hub{fill:var(--kc-amber);}
  .kc-gauge text{fill:var(--kc-muted);font-family:var(--primary-font,'Inter',sans-serif);font-size:9px;}
  .kc-bar-track{background:var(--kc-panel-2);border:1px solid var(--kc-line);border-radius:20px;height:16px;position:relative;overflow:hidden;}
  .kc-bar-fill{height:100%;width:0%;background:linear-gradient(90deg,var(--kc-cyan),var(--kc-amber));border-radius:20px;transition:width .6s cubic-bezier(.4,0,.2,1);}
  .kc-bar-fill.fail{background:linear-gradient(90deg,#b34a1f,var(--kc-red));}
  .kc-bar-thresh{position:absolute;top:-3px;bottom:-3px;width:2px;background:var(--kc-red);}
  .kc-bar-label{font-family:var(--primary-font,'Inter',sans-serif);font-size:10px;color:var(--kc-muted);margin-top:4px;display:flex;justify-content:space-between;}
  .kc-tank{width:60px;height:74px;border:1.5px solid var(--kc-line);border-radius:0 0 4px 4px;position:relative;overflow:hidden;background:var(--kc-panel-2);margin:0 auto;}
  .kc-tank-fill{position:absolute;bottom:0;left:0;right:0;height:0%;background:linear-gradient(180deg,var(--kc-cyan),#0a3c66);transition:height .7s cubic-bezier(.4,0,.2,1);}
  .kc-tank-fill::after{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:rgba(255,255,255,.5);}
  .kc-led-row{display:flex;gap:14px;align-items:center;flex-wrap:wrap;}
  .kc-led{display:flex;flex-direction:column;align-items:center;gap:5px;}
  .kc-led i{width:13px;height:13px;border-radius:50%;background:#c7d2de;display:block;transition:.3s;}
  .kc-led.pass i{background:var(--kc-green);box-shadow:0 0 9px rgba(24,138,78,.55);}
  .kc-led.fail i{background:var(--kc-red);box-shadow:0 0 9px rgba(216,52,47,.55);animation:kc-pulse 1s ease-in-out infinite;}
  @keyframes kc-pulse{0%,100%{opacity:1}50%{opacity:.5}}
  .kc-led span{font-family:var(--primary-font,'Inter',sans-serif);font-size:9px;color:var(--kc-muted);text-align:center;}
  .kc-curve{width:100%;height:74px;}
  .kc-curve path.track{fill:none;stroke:var(--kc-line);stroke-width:1.5;}
  .kc-curve path.curve{fill:none;stroke:var(--kc-cyan);stroke-width:2;}
  .kc-curve circle.dot{fill:var(--kc-amber);transition:cx .6s cubic-bezier(.4,0,.2,1),cy .6s cubic-bezier(.4,0,.2,1);}

  /* product selector wizard */
  .kc-wiz{background:var(--kc-panel);border:1px solid var(--kc-line);border-radius:8px;padding:26px;max-width:640px;
    box-shadow:0 1px 2px rgba(15,40,70,.04);}
  .kc-wiz-crumbs{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px;min-height:20px;}
  .kc-crumb{font-family:var(--primary-font,'Inter',sans-serif);font-size:10.5px;color:var(--kc-cyan);background:rgba(15,95,166,.07);
    border:1px solid rgba(15,95,166,.28);border-radius:3px;padding:3px 8px;}
  .kc-wiz-q{font-size:16px;font-weight:600;margin-bottom:16px;color:#0f2438;}
  .kc-wiz-opts{display:flex;flex-direction:column;gap:8px;}
  .kc-wiz-opt{text-align:left;background:var(--kc-panel-2);border:1px solid var(--kc-line);color:var(--kc-text);
    padding:11px 14px;border-radius:5px;cursor:pointer;font-size:13.5px;transition:.15s;}
  .kc-wiz-opt:hover{border-color:var(--kc-amber);background:#fff3e8;}
  .kc-wiz-result{display:none;}
  .kc-wiz-result.show{display:block;animation:kc-fade .3s ease;}
  .kc-wiz-badge{font-family:var(--primary-font,'Inter',sans-serif);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--kc-amber);margin-bottom:6px;}
  .kc-wiz-product{font-size:21px;font-weight:700;margin-bottom:10px;color:#0f2438;}
  .kc-wiz-blurb{color:var(--kc-muted);font-size:13.5px;line-height:1.6;margin-bottom:18px;}
  .kc-restart{font-family:var(--primary-font,'Inter',sans-serif);font-size:11.5px;color:var(--kc-cyan);background:none;border:1px solid rgba(15,95,166,.32);
    padding:7px 13px;border-radius:5px;cursor:pointer;}
  .kc-restart:hover{background:rgba(15,95,166,.08);}

  .kc-footer{margin-top:34px;border-top:1px solid var(--kc-line);padding-top:16px;color:var(--kc-muted);font-size:11px;line-height:1.6;}
  @media(max-width:600px){#kc-tools{padding:30px 14px 44px;} .kc-grid{grid-template-columns:1fr;}}

/* Kuncham website integration overrides */
#kc-tools{background:#f6f8fb;padding:30px 0 52px;border-radius:0;color:#232323;}
#kc-tools .kc-wrap{max-width:1200px;padding:0 18px;}
#kc-tools h2.kc-suite-title{font-family:var(--alt-font,'Plus Jakarta Sans',sans-serif);font-size:clamp(24px,3vw,34px);margin:0 0 8px;color:#232323;}
#kc-tools .kc-suite-copy{font-size:15px;line-height:1.65;color:#5d6877;max-width:850px;margin:0 0 22px;}
#kc-tools .kc-tabs{position:sticky;top:72px;z-index:12;background:rgba(246,248,251,.96);backdrop-filter:blur(12px);padding:10px 0 12px;margin-bottom:20px;border-bottom:1px solid #dbe4ee;}
#kc-tools .kc-tab{border-radius:999px;padding:9px 14px;font-size:12px;background:#fff;color:#4d5d70;}
#kc-tools .kc-tab.active{background:#0c487b;border-color:#0c487b;color:#fff;box-shadow:0 6px 16px rgba(12,72,123,.16);}
#kc-tools .kc-card{border-radius:12px;padding:18px;box-shadow:0 8px 24px rgba(15,40,70,.055);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
#kc-tools .kc-card:hover{transform:translateY(-2px);border-color:#b8c9da;box-shadow:0 12px 30px rgba(15,40,70,.09);}
#kc-tools .kc-card-head h3{font-family:var(--alt-font,'Plus Jakarta Sans',sans-serif);font-size:16px;line-height:1.35;color:#1f2e3d;}
#kc-tools .kc-field input,#kc-tools .kc-field select{background:#fff;border-radius:7px;padding:9px 10px;font-size:13px;min-height:40px;}
#kc-tools .kc-formula{background:#f1f5f9;border-radius:7px;color:#59697a;}
#kc-tools .kc-live-pill{display:inline-flex;align-items:center;gap:7px;width:max-content;padding:6px 10px;border-radius:999px;background:#eaf4ee;color:#188a4e;font-size:11px;font-weight:700;}
#kc-tools .kc-live-pill::before{content:"";width:7px;height:7px;border-radius:50%;background:#188a4e;box-shadow:0 0 0 4px rgba(24,138,78,.12);}
#kc-tools .kc-product-reco{margin-top:4px;border-top:1px solid #e3e9f0;padding-top:11px;}
#kc-tools .kc-product-reco__label{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:#607086;font-weight:700;margin-bottom:7px;}
#kc-tools .kc-product-reco__links{display:flex;flex-wrap:wrap;gap:6px;}
#kc-tools .kc-product-reco__links a{display:inline-flex;align-items:center;gap:5px;border:1px solid rgba(12,72,123,.18);background:#f7fbff;color:#0c487b;border-radius:999px;padding:6px 9px;font-size:11px;font-weight:700;line-height:1.2;}
#kc-tools .kc-product-reco__links a:hover{background:#0c487b;color:#fff;border-color:#0c487b;}
#kc-tools .kc-wiz{max-width:760px;border-radius:14px;box-shadow:0 10px 28px rgba(15,40,70,.06);}
#kc-tools .kc-wiz-cta{display:inline-flex;margin:0 8px 8px 0;background:#0c487b;color:#fff;border-radius:7px;padding:9px 13px;font-size:12px;font-weight:700;}
#kc-tools .kc-wiz-cta:hover{background:#07365d;color:#fff;}
#kc-tools .kc-restart{border-radius:7px;}
#kc-tools .kc-footer{font-size:12px;background:#fff;border:1px solid #e0e7ef;border-radius:10px;padding:14px 16px;margin-top:28px;}
#kc-tools .kc-rail{margin-bottom:22px;}
#kc-tools .kc-rail-dash{background:#0c487b;box-shadow:0 0 6px rgba(12,72,123,.45);}
#kc-tools .kc-eyebrow{color:#0c487b;}
#kc-tools .kc-eyebrow::before{background:#0c487b;box-shadow:0 0 0 3px rgba(12,72,123,.14);}
#kc-tools .kc-readout b{color:#0c487b;}
#kc-tools .kc-bar-fill{background:linear-gradient(90deg,#0c487b,#2f7dbc);}
#kc-tools .kc-gauge .arcfill,#kc-tools .kc-curve path.curve{stroke:#0c487b;}
#kc-tools .kc-gauge .needle,#kc-tools .kc-gauge .hub{stroke:#e2680a;fill:#e2680a;}
@media(max-width:767px){
  #kc-tools{padding:22px 0 38px;}
  #kc-tools .kc-wrap{padding:0 14px;}
  #kc-tools .kc-tabs{top:58px;display:flex;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;margin-left:-14px;margin-right:-14px;padding-left:14px;padding-right:14px;}
  #kc-tools .kc-tabs::-webkit-scrollbar{display:none;}
  #kc-tools .kc-grid{grid-template-columns:1fr;gap:12px;}
  #kc-tools .kc-card{padding:15px;}
  #kc-tools .kc-inputs{grid-template-columns:repeat(2,minmax(0,1fr));}
  #kc-tools .kc-field label{font-size:10px;}
}
@media(max-width:480px){#kc-tools .kc-inputs{grid-template-columns:1fr 1fr;}#kc-tools .kc-card-head h3{font-size:15px;}}