:root{
    --bg:#0b1f2e; --bg-tint:#0c2334; --surface:#112c40; --surface2:#0e2536;
    --ink:#e9f2f8; --ink2:#b7cedb; --muted:#86a2b3; --muted2:#5f7d8e;
    --line:rgba(150,195,215,.14); --line2:rgba(150,195,215,.24);
    --primary:#2f90e6; --primary-d:#7bb8f2; --cyan:#22d3ee; --teal:#1bc6ac;
    --azure:#5aa2ff; --amber:#f5b04a; --red:#ff6f6f; --green:#1bc6ac;
    --grad:linear-gradient(120deg,#22d3ee,#2f90e6);
    --grad2:linear-gradient(120deg,#2f90e6,#5aa2ff);
    --sh-sm:0 1px 2px rgba(0,0,0,.30);
    --sh:0 14px 36px rgba(0,0,0,.42);
    --sh-lg:0 30px 70px rgba(0,0,0,.55);
    --display:"Bricolage Grotesque",system-ui,sans-serif;
    --body:"Hanken Grotesk",system-ui,sans-serif;
    --mono:"JetBrains Mono",ui-monospace,monospace;
    --r:16px; --r-lg:22px; --maxw:1180px;
  }
  *{ box-sizing:border-box; margin:0; padding:0; }
  html{ scroll-behavior:smooth; scroll-padding-top:84px; }
  body{
    background:
      radial-gradient(1200px 640px at 86% -6%, rgba(34,211,238,.10), transparent 58%),
      radial-gradient(980px 560px at -8% 6%, rgba(90,162,255,.10), transparent 55%),
      linear-gradient(180deg,var(--bg-tint),var(--bg) 460px);
    color:var(--ink); font-family:var(--body); line-height:1.62; -webkit-font-smoothing:antialiased; overflow-x:hidden;
  }
  .wrap{ max-width:var(--maxw); margin:0 auto; padding:0 26px; }
  a{ color:inherit; }
  h1,h2,h3{ font-family:var(--display); font-weight:700; line-height:1.08; letter-spacing:-.02em; color:var(--ink); }
  section{ padding:84px 0; position:relative; }
  .eyebrow{ font-family:var(--mono); font-size:.71rem; letter-spacing:.2em; text-transform:uppercase; color:var(--primary); display:inline-flex; align-items:center; gap:.7em; font-weight:500; }
  .eyebrow::before{ content:""; width:22px; height:2px; border-radius:2px; background:var(--grad); display:inline-block; }
  .h2{ font-size:clamp(1.8rem,3.6vw,2.6rem); margin:14px 0 16px; }
  .lede{ color:var(--ink2); font-size:1.12rem; max-width:64ch; }
  .muted{ color:var(--muted); }

  .btn{ font-family:var(--mono); font-size:.77rem; letter-spacing:.04em; text-transform:uppercase; font-weight:500; padding:14px 24px; border:none; background:var(--grad); color:#fff; display:inline-flex; align-items:center; gap:.6em; border-radius:12px; text-decoration:none; cursor:pointer; box-shadow:0 10px 26px rgba(12,111,214,.28); transition:transform .16s, box-shadow .28s, filter .2s; }
  .btn:hover{ transform:translateY(-2px); box-shadow:0 16px 34px rgba(12,111,214,.34); filter:saturate(1.08); }
  .btn.ghost{ background:var(--surface); color:var(--primary); border:1px solid var(--line2); box-shadow:var(--sh-sm); }
  .btn.ghost:hover{ box-shadow:var(--sh); }

  /* top + nav */
  .topbar{ font-family:var(--mono); font-size:.67rem; letter-spacing:.04em; color:#9cb6c6; background:#07151f; }
  .topbar .wrap{ display:flex; justify-content:space-between; gap:14px; padding:8px 26px; flex-wrap:wrap; }
  .topbar, .topbar a{ color:#bcd2e0; }
  .topbar .left{ color:#9cb6c6; }
  .topbar a{ text-decoration:none; }
  .topbar a:hover{ color:#fff; }
  header{ position:sticky; top:0; z-index:60; background:rgba(11,31,46,.84); backdrop-filter:blur(14px) saturate(1.2); border-bottom:1px solid var(--line); }
  nav{ display:flex; align-items:center; justify-content:space-between; gap:18px; padding:12px 0; }
  .brand{ display:flex; align-items:center; gap:11px; text-decoration:none; flex-shrink:0; }
  .mark{ width:40px; height:40px; filter:drop-shadow(0 6px 14px rgba(12,111,214,.3)); }
  .nm{ font-family:var(--display); font-weight:700; font-size:1.24rem; letter-spacing:-.01em; line-height:1; color:var(--ink); }
  .nm span{ background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
  .sub{ display:block; font-family:var(--mono); font-size:.55rem; letter-spacing:.18em; text-transform:uppercase; color:var(--muted2); margin-top:3px; }
  .nav-links{ display:flex; gap:6px; align-items:center; }
  .nav-links a{ font-size:.84rem; color:var(--ink2); text-decoration:none; padding:7px 12px; border-radius:9px; transition:background .18s,color .18s; }
  .nav-links a:hover{ background:rgba(12,111,214,.08); color:var(--primary); }
  .nav-links a.active{ color:var(--primary); background:rgba(12,111,214,.1); }
  .nav-cta{ font-family:var(--mono); font-size:.72rem; letter-spacing:.04em; text-transform:uppercase; background:var(--grad); color:#fff; padding:10px 16px; border-radius:10px; text-decoration:none; box-shadow:0 8px 20px rgba(12,111,214,.26); }
  .menu-btn{ display:none; border:1px solid var(--line2); background:var(--surface); color:var(--ink); padding:9px 14px; border-radius:10px; font-family:var(--mono); font-size:.72rem; text-transform:uppercase; cursor:pointer; }

  /* hero */
  .hero{ padding:78px 0 70px; }
  .hero-grid{ display:grid; grid-template-columns:1.18fr .92fr; gap:50px; align-items:center; }
  .badge{ display:inline-flex; align-items:center; gap:8px; font-family:var(--mono); font-size:.68rem; letter-spacing:.06em; text-transform:uppercase; color:var(--primary-d); background:rgba(12,111,214,.09); border:1px solid rgba(12,111,214,.2); padding:6px 13px; border-radius:100px; margin-bottom:18px; }
  .hero h1{ font-size:clamp(2.3rem,5.2vw,3.95rem); }
  .hero h1 span{ background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
  .hero .lede{ margin-top:20px; }
  .cta-row{ display:flex; gap:14px; margin-top:30px; flex-wrap:wrap; }
  .hero-note{ margin-top:22px; font-family:var(--mono); font-size:.71rem; color:var(--muted); letter-spacing:.02em; }

  /* scorecard widget */
  .scorecard{ background:var(--surface); border:1px solid var(--line); border-radius:var(--r-lg); padding:22px; box-shadow:var(--sh-lg); position:relative; overflow:hidden; }
  .scorecard::before{ content:""; position:absolute; inset:0 0 auto 0; height:4px; background:var(--grad); }
  .sc-head{ display:flex; justify-content:space-between; align-items:center; margin-bottom:16px; }
  .sc-head .t{ font-family:var(--mono); font-size:.66rem; letter-spacing:.14em; text-transform:uppercase; color:var(--muted); }
  .livedot{ display:inline-flex; align-items:center; gap:7px; font-family:var(--mono); font-size:.6rem; color:var(--teal); letter-spacing:.1em; text-transform:uppercase; }
  .livedot i{ width:8px; height:8px; border-radius:50%; background:var(--teal); animation:pulse 2.2s infinite; }
  @keyframes pulse{ 0%{ box-shadow:0 0 0 0 rgba(15,174,159,.5);} 70%{ box-shadow:0 0 0 8px rgba(15,174,159,0);} 100%{ box-shadow:0 0 0 0 rgba(15,174,159,0);} }
  .tiles{ display:grid; grid-template-columns:1fr 1fr; gap:12px; }
  .tile{ background:var(--surface2); border:1px solid var(--line); border-radius:12px; padding:14px; }
  .tile .lab{ font-size:.72rem; color:var(--muted); }
  .tile .val{ font-family:var(--display); font-weight:700; font-size:1.6rem; line-height:1.1; margin-top:4px; }
  .tile .val.warn{ color:var(--amber); } .tile .val.bad{ color:var(--red); } .tile .val.good{ color:var(--teal); } .tile .val.pri{ color:var(--primary); }
  .sc-foot{ font-family:var(--mono); font-size:.59rem; color:var(--muted2); margin-top:14px; }

  /* trust strip */
  .trust{ display:flex; flex-wrap:wrap; gap:10px 14px; align-items:center; margin-top:34px; }
  .trust .lbl{ font-family:var(--mono); font-size:.66rem; letter-spacing:.1em; text-transform:uppercase; color:var(--muted2); margin-right:4px; }
  .pill{ font-family:var(--mono); font-size:.68rem; color:var(--ink2); background:var(--surface); border:1px solid var(--line); border-radius:100px; padding:7px 14px; box-shadow:var(--sh-sm); }

  /* cards */
  .grid{ display:grid; gap:18px; }
  .g2{ grid-template-columns:repeat(2,1fr); } .g3{ grid-template-columns:repeat(3,1fr); } .g4{ grid-template-columns:repeat(4,1fr); }
  .card{ background:var(--surface); border:1px solid var(--line); border-radius:var(--r); padding:24px; box-shadow:var(--sh-sm); transition:transform .2s, box-shadow .2s; }
  .card:hover{ transform:translateY(-3px); box-shadow:var(--sh); }
  .card h3{ font-size:1.1rem; margin-bottom:8px; }
  .card p{ color:var(--muted); font-size:.94rem; }
  .ic{ width:44px; height:44px; border-radius:12px; background:var(--grad); display:flex; align-items:center; justify-content:center; margin-bottom:14px; color:#fff; font-family:var(--mono); font-weight:500; font-size:.82rem; box-shadow:0 8px 18px rgba(12,111,214,.26); }
  .ic.soft{ background:rgba(12,111,214,.1); color:var(--primary); box-shadow:none; border:1px solid rgba(12,111,214,.2); }
  .chips{ display:flex; flex-wrap:wrap; gap:8px; margin-top:14px; }
  .chip{ font-family:var(--mono); font-size:.66rem; color:var(--ink2); border:1px solid var(--line); background:var(--surface2); border-radius:100px; padding:5px 11px; }

  .center{ text-align:center; }
  .narr{ max-width:74ch; }

  /* proportional water balance bar */
  .balbar{ display:flex; height:62px; border-radius:14px; overflow:hidden; border:1px solid var(--line); box-shadow:var(--sh-sm); margin-top:26px; }
  .balseg{ display:flex; flex-direction:column; justify-content:center; padding:0 14px; color:#fff; min-width:0; transition:flex .4s; }
  .balseg .s1{ font-family:var(--mono); font-size:.6rem; letter-spacing:.06em; opacity:.92; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
  .balseg .s2{ font-family:var(--display); font-weight:700; font-size:1.05rem; }
  .seg-rev{ background:linear-gradient(120deg,#0fae9f,#12c2a0); }
  .seg-unb{ background:#7f9aac; }
  .seg-app{ background:linear-gradient(120deg,#3b8cff,#0c6fd6); }
  .seg-real{ background:linear-gradient(120deg,#f5a524,#f08a2b); }
  .balleg{ display:flex; gap:18px; flex-wrap:wrap; font-family:var(--mono); font-size:.68rem; color:var(--ink2); margin-top:14px; }
  .dot{ display:inline-block; width:10px; height:10px; border-radius:3px; margin-right:7px; vertical-align:middle; }
  .bal-detgrid{ display:grid; grid-template-columns:repeat(4,1fr); gap:12px; margin-top:18px; }

  /* generic collapsible widget */
  details.w{ border:1px solid var(--line); border-radius:14px; background:var(--surface); box-shadow:var(--sh-sm); overflow:hidden; transition:box-shadow .2s; }
  details.w + details.w{ margin-top:12px; }
  details.w[open]{ box-shadow:var(--sh); }
  details.w summary{ list-style:none; cursor:pointer; padding:18px 20px; display:flex; align-items:center; gap:14px; }
  details.w summary::-webkit-details-marker{ display:none; }
  details.w summary .stitle{ font-family:var(--display); font-weight:600; font-size:1.04rem; flex:1; }
  details.w summary .scue{ width:26px; height:26px; flex-shrink:0; border-radius:8px; background:rgba(12,111,214,.1); color:var(--primary); display:flex; align-items:center; justify-content:center; font-family:var(--mono); font-size:1.1rem; transition:transform .2s, background .2s; }
  details.w[open] summary .scue{ transform:rotate(45deg); background:var(--grad); color:#fff; }
  details.w summary .mini{ font-family:var(--mono); font-size:.64rem; color:var(--muted); text-transform:uppercase; letter-spacing:.08em; }
  details.w .body{ padding:0 20px 20px 60px; color:var(--muted); font-size:.94rem; }
  details.w .body .chips{ margin-top:10px; }

  /* KPI / gauge */
  .kpi-grid{ display:grid; grid-template-columns:1.05fr .95fr; gap:26px; align-items:stretch; margin-top:26px; }
  .panel{ background:var(--surface); border:1px solid var(--line); border-radius:var(--r); padding:24px; box-shadow:var(--sh-sm); }
  .eq{ font-family:var(--mono); font-size:1rem; color:var(--ink); background:var(--surface2); border:1px solid var(--line); border-radius:12px; padding:14px 16px; display:inline-block; }
  .eq b{ color:var(--primary); }
  .gauge-wrap{ text-align:center; }
  .gauge-val{ font-family:var(--display); font-weight:800; font-size:2.4rem; color:var(--ink); line-height:1; margin-top:-6px; }
  .gauge-cap{ font-family:var(--mono); font-size:.64rem; letter-spacing:.12em; text-transform:uppercase; color:var(--muted); }
  .bands{ display:flex; justify-content:space-between; font-family:var(--mono); font-size:.6rem; color:var(--muted2); margin-top:6px; }
  .kpi-tiles{ display:grid; grid-template-columns:1fr 1fr; gap:12px; margin-top:18px; }
  .ktile{ background:var(--surface); border:1px solid var(--line); border-radius:12px; padding:16px; box-shadow:var(--sh-sm); }
  .ktile .v{ font-family:var(--display); font-weight:700; font-size:1.3rem; color:var(--primary); }
  .ktile .k{ font-size:.82rem; color:var(--muted); margin-top:2px; }

  /* donut */
  .donut-wrap{ display:grid; grid-template-columns:auto 1fr; gap:26px; align-items:center; }
  .dleg{ display:grid; gap:10px; }
  .dleg .row{ display:flex; align-items:center; gap:10px; font-size:.9rem; }
  .dleg .row b{ font-family:var(--mono); margin-left:auto; color:var(--ink); }
  .dleg .row small{ color:var(--muted); }

  /* calculator widget */
  .calc{ background:var(--surface); border:1px solid var(--line); border-radius:var(--r-lg); box-shadow:var(--sh-lg); overflow:hidden; margin-top:26px; }
  .calc-head{ background:linear-gradient(120deg,#0a2540,#0c4f8f); color:#fff; padding:20px 26px; display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:10px; }
  .calc-head h3{ color:#fff; font-size:1.2rem; }
  .calc-head p{ color:#bcd6ea; font-size:.82rem; font-family:var(--mono); }
  .calc-body{ display:grid; grid-template-columns:1fr 1fr; gap:0; }
  .calc-inputs{ padding:26px; border-right:1px solid var(--line); }
  .calc-out{ padding:26px; background:var(--surface2); }
  .field{ margin-bottom:20px; }
  .field label{ display:flex; justify-content:space-between; font-size:.86rem; color:var(--ink2); font-weight:500; margin-bottom:8px; }
  .field label .num{ font-family:var(--mono); color:var(--primary); }
  .field input[type=range]{ width:100%; -webkit-appearance:none; height:6px; border-radius:6px; background:var(--line2); outline:none; }
  .field input[type=range]::-webkit-slider-thumb{ -webkit-appearance:none; width:20px; height:20px; border-radius:50%; background:var(--primary); border:3px solid #fff; box-shadow:0 2px 8px rgba(12,111,214,.4); cursor:pointer; }
  .field input[type=range]::-moz-range-thumb{ width:18px; height:18px; border-radius:50%; background:var(--primary); border:3px solid #fff; cursor:pointer; }
  .field .hint{ font-family:var(--mono); font-size:.62rem; color:var(--muted2); margin-top:6px; }
  .out-row{ display:flex; justify-content:space-between; align-items:baseline; padding:14px 0; border-bottom:1px dashed var(--line); }
  .out-row:last-child{ border-bottom:none; }
  .out-row .ol{ color:var(--muted); font-size:.9rem; }
  .out-row .ov{ font-family:var(--display); font-weight:800; font-size:1.5rem; }
  .ov.cost{ color:var(--red); } .ov.vol{ color:var(--primary); } .ov.save{ color:var(--teal); }
  .calc-note{ font-family:var(--mono); font-size:.62rem; color:var(--muted2); padding:0 26px 20px; }

  /* pillars */
  .pillars{ display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin-top:28px; }
  .pillar{ background:var(--surface); border:1px solid var(--line); border-radius:14px; padding:22px; box-shadow:var(--sh-sm); position:relative; overflow:hidden; transition:transform .2s,box-shadow .2s; }
  .pillar:hover{ transform:translateY(-3px); box-shadow:var(--sh); }
  .pillar::before{ content:""; position:absolute; top:0; left:0; right:0; height:3px; background:var(--grad); }
  .pillar .no{ font-family:var(--mono); font-size:.66rem; color:var(--muted2); letter-spacing:.1em; }
  .pillar h3{ font-size:1.02rem; margin:6px 0 8px; }
  .pillar p{ font-size:.87rem; color:var(--muted); }
  .floor{ margin-top:16px; text-align:center; font-family:var(--mono); font-size:.7rem; color:var(--muted); background:var(--surface2); border:1px dashed var(--line2); border-radius:10px; padding:12px; }
  .floor b{ color:var(--primary); }

  /* steps timeline */
  .steps{ counter-reset:s; display:grid; gap:0; margin-top:26px; position:relative; }
  .step{ display:grid; grid-template-columns:54px 1fr; gap:18px; padding:0 0 26px; position:relative; }
  .step:last-child{ padding-bottom:0; }
  .step .marker{ position:relative; }
  .step .marker::before{ counter-increment:s; content:counter(s,decimal-leading-zero); position:relative; z-index:2; width:46px; height:46px; border-radius:12px; background:var(--surface); border:1px solid var(--line2); box-shadow:var(--sh-sm); display:flex; align-items:center; justify-content:center; font-family:var(--mono); font-size:.84rem; color:var(--primary); font-weight:500; }
  .step:not(:last-child) .marker::after{ content:""; position:absolute; left:23px; top:46px; bottom:-26px; width:2px; background:var(--line2); }
  .step .c h3{ font-size:1.06rem; margin-bottom:4px; }
  .step .c p{ color:var(--muted); font-size:.92rem; }

  /* data validity meter */
  .dvs{ margin-top:18px; }
  .dvs-track{ height:14px; border-radius:100px; background:linear-gradient(90deg,#ef4848 0%,#f5a524 35%,#0fae9f 70%,#0c6fd6 100%); position:relative; }
  .dvs-mark{ position:absolute; top:-7px; width:4px; height:28px; background:var(--ink); border-radius:3px; box-shadow:0 0 0 3px var(--bg); }
  .dvs-scale{ display:flex; justify-content:space-between; font-family:var(--mono); font-size:.6rem; color:var(--muted2); margin-top:8px; }

  /* cases */
  .case{ background:var(--surface); border:1px solid var(--line); border-radius:var(--r); padding:24px; box-shadow:var(--sh-sm); transition:transform .2s,box-shadow .2s; }
  .case:hover{ transform:translateY(-3px); box-shadow:var(--sh); }
  .case .big{ font-family:var(--display); font-weight:800; font-size:1.9rem; background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; line-height:1; }
  .case .loc{ font-family:var(--mono); font-size:.66rem; letter-spacing:.1em; text-transform:uppercase; color:var(--primary-d); margin:10px 0 8px; }
  .case p{ color:var(--muted); font-size:.88rem; }
  .case .src{ font-family:var(--mono); font-size:.58rem; color:var(--muted2); margin-top:12px; }

  /* faq */
  .faq details{ border:1px solid var(--line); border-radius:14px; margin-bottom:12px; background:var(--surface); box-shadow:var(--sh-sm); overflow:hidden; }
  .faq summary{ list-style:none; cursor:pointer; padding:18px 22px; font-family:var(--display); font-weight:600; font-size:1.04rem; display:flex; justify-content:space-between; align-items:center; gap:16px; }
  .faq summary::-webkit-details-marker{ display:none; }
  .faq summary::after{ content:"+"; font-family:var(--mono); color:var(--primary); font-size:1.4rem; transition:transform .2s; }
  .faq details[open]{ box-shadow:var(--sh); }
  .faq details[open] summary::after{ transform:rotate(45deg); }
  .faq .ans{ padding:0 22px 20px; color:var(--muted); font-size:.95rem; }

  /* contact */
  .cta-band{ background:linear-gradient(125deg,#0a2540,#0c4f8f 60%,#0c6fd6); border-radius:var(--r-lg); padding:54px 40px; text-align:center; color:#fff; box-shadow:var(--sh-lg); position:relative; overflow:hidden; }
  .cta-band::after{ content:""; position:absolute; right:-60px; top:-60px; width:260px; height:260px; border-radius:50%; background:radial-gradient(circle,rgba(6,182,212,.4),transparent 70%); }
  .cta-band h2{ color:#fff; font-size:clamp(1.7rem,3.4vw,2.4rem); position:relative; }
  .cta-band p{ color:#cfe3f2; max-width:60ch; margin:14px auto 26px; position:relative; }
  .mailbig{ font-family:var(--display); font-weight:700; font-size:clamp(1.3rem,3vw,1.9rem); color:#fff; text-decoration:none; position:relative; border-bottom:2px solid rgba(255,255,255,.4); }
  .mailbig:hover{ border-color:#fff; }

  footer{ padding:46px 0 40px; border-top:1px solid var(--line); margin-top:30px; }
  .foot-grid{ display:flex; justify-content:space-between; gap:24px; flex-wrap:wrap; align-items:flex-start; }
  .foot-small{ font-family:var(--mono); font-size:.7rem; color:var(--muted); line-height:1.9; }
  .foot-small a{ color:var(--primary); text-decoration:none; }
  .disclaimer{ font-family:var(--mono); font-size:.62rem; color:var(--muted2); margin-top:24px; max-width:90ch; line-height:1.7; border-top:1px solid var(--line); padding-top:18px; }

  .reveal{ opacity:0; transform:translateY(18px); transition:opacity .7s ease, transform .7s ease; }
  .reveal.in{ opacity:1; transform:none; }

  @media (max-width:920px){
    .hero-grid,.kpi-grid,.calc-body,.donut-wrap{ grid-template-columns:1fr; }
    .g3,.g4,.pillars,.bal-detgrid{ grid-template-columns:1fr 1fr; }
    .calc-inputs{ border-right:none; border-bottom:1px solid var(--line); }
    .nav-links{ display:none; } .menu-btn{ display:inline-flex; }
    .nav-links.open{ display:flex; position:absolute; top:64px; left:0; right:0; flex-direction:column; align-items:stretch; background:var(--surface); border-bottom:1px solid var(--line2); padding:14px 26px; gap:6px; box-shadow:var(--sh); }
  }
  @media (max-width:560px){ .g2,.g3,.g4,.pillars,.bal-detgrid,.tiles,.kpi-tiles{ grid-template-columns:1fr; } }
  @media (prefers-reduced-motion:reduce){ .reveal{ transition:none; opacity:1; transform:none; } .livedot i{ animation:none; } html{ scroll-behavior:auto; } }

  /* ---- advanced water-audit calculator ---- */
  .ci-top{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:22px; }
  .ci-grid{ display:grid; grid-template-columns:1fr 1fr; gap:24px; margin-top:14px; }
  .srow{ margin:13px 0; }
  .srow .top{ display:flex; justify-content:space-between; align-items:baseline; gap:10px; }
  .srow .top .nm3{ font-size:.85rem; color:var(--ink2); font-weight:500; }
  .srow .top .vv{ font-family:var(--mono); color:var(--cyan); font-size:.83rem; white-space:nowrap; display:inline-flex; gap:7px; align-items:center; }
  .srow input[type=range]{ width:100%; margin-top:8px; -webkit-appearance:none; height:5px; border-radius:5px; background:var(--line2); outline:none; }
  .srow input[type=range]::-webkit-slider-thumb{ -webkit-appearance:none; width:17px; height:17px; border-radius:50%; background:var(--primary); border:2px solid var(--surface); box-shadow:0 2px 6px rgba(0,0,0,.45); cursor:pointer; }
  .srow input[type=range]::-moz-range-thumb{ width:15px; height:15px; border-radius:50%; background:var(--primary); border:2px solid var(--surface); cursor:pointer; }
  .srow .hint2{ font-family:var(--mono); font-size:.6rem; color:var(--muted2); margin-top:4px; }
  .agroup{ border:1px solid var(--line); border-radius:12px; padding:11px 16px 5px; margin-bottom:13px; background:var(--surface2); }
  .agroup .ah{ display:flex; justify-content:space-between; align-items:center; }
  .agroup .ah .at{ font-family:var(--mono); font-size:.64rem; letter-spacing:.09em; text-transform:uppercase; color:var(--muted); }
  .flag{ font-family:var(--mono); font-size:.6rem; padding:3px 9px; border-radius:100px; letter-spacing:.03em; white-space:nowrap; transition:background .3s, color .3s; }
  .flag.ok{ color:#06231d; background:var(--teal); }
  .flag.watch{ color:#3a2600; background:var(--amber); }
  .flag.high{ color:#fff; background:var(--red); }
  .results{ background:var(--surface2); border:1px solid var(--line); border-radius:14px; padding:18px; }
  .nrwbig{ display:flex; align-items:flex-start; justify-content:space-between; gap:12px; }
  .nrwbig .n{ font-family:var(--display); font-weight:800; font-size:2.7rem; line-height:1; color:var(--ink); }
  .nrwbig .n small{ font-size:1rem; color:var(--muted); font-weight:600; }
  .revline{ font-family:var(--mono); font-size:.66rem; color:var(--muted); margin:2px 0 12px; }
  .livebar{ display:flex; height:48px; border-radius:11px; overflow:hidden; border:1px solid var(--line); }
  .lseg{ display:flex; align-items:center; justify-content:center; color:#fff; font-family:var(--mono); font-size:.6rem; min-width:0; overflow:hidden; transition:flex-grow .55s cubic-bezier(.4,0,.2,1); }
  .miniLeg{ display:flex; flex-wrap:wrap; gap:9px 14px; font-family:var(--mono); font-size:.62rem; color:var(--ink2); margin-top:10px; }
  .cdonut{ display:flex; align-items:center; gap:16px; margin-top:14px; padding-top:14px; border-top:1px solid var(--line); }
  .cdonut circle{ transition:stroke-dasharray .55s ease, stroke-dashoffset .55s ease; }
  .econ-grid{ display:grid; grid-template-columns:1fr 1fr 1fr; }
  .advout{ display:grid; grid-template-columns:1fr 1fr; gap:12px; margin-top:14px; }
  .advtile{ background:var(--surface); border:1px solid var(--line); border-radius:10px; padding:12px 14px; }
  .advtile .v{ font-family:var(--display); font-weight:800; font-size:1.5rem; color:var(--ink); display:flex; align-items:center; gap:9px; }
  .advtile .k{ font-size:.76rem; color:var(--muted); margin-top:2px; }
  .guard{ font-family:var(--mono); font-size:.66rem; color:var(--amber); margin-top:10px; min-height:1em; }
  /* ---- US stats ---- */
  .stat{ background:var(--surface); border:1px solid var(--line); border-radius:var(--r); padding:22px; box-shadow:var(--sh-sm); position:relative; overflow:hidden; transition:transform .2s, box-shadow .2s; }
  .stat:hover{ transform:translateY(-3px); box-shadow:var(--sh); }
  .stat::before{ content:""; position:absolute; left:0; top:0; bottom:0; width:3px; background:var(--grad); }
  .stat .sv{ font-family:var(--display); font-weight:800; font-size:2.3rem; background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; line-height:1; }
  .stat .sl{ color:var(--ink2); font-size:.92rem; margin-top:8px; }
  .stat .ss{ font-family:var(--mono); font-size:.57rem; color:var(--muted2); margin-top:10px; letter-spacing:.04em; }
  @media (max-width:920px){ .ci-top,.ci-grid,.econ-grid,.advout{ grid-template-columns:1fr !important; } }

  /* ============================================================= */
  /* DOMAIN-FOR-SALE LAYER  (added — matches the NRW Analytics theme)*/
  /* ============================================================= */
  .sale-band{ position:relative; z-index:5; overflow:hidden; border-bottom:1px solid var(--line2);
    background:
      radial-gradient(900px 380px at 84% -45%, rgba(34,211,238,.16), transparent 60%),
      radial-gradient(680px 300px at -6% 0%, rgba(90,162,255,.12), transparent 58%),
      linear-gradient(180deg,#0a1e2c,#0b1f2e); }
  .sale-band::after{ content:""; position:absolute; left:0; right:0; bottom:0; height:2px; background:var(--grad); opacity:.92; }
  .sale-band .wrap{ position:relative; z-index:1; display:flex; align-items:center; justify-content:space-between;
    gap:40px; padding:30px 26px 34px; flex-wrap:wrap; }
  .sale-left{ max-width:62ch; }
  .sale-flag{ font-family:var(--mono); font-size:.7rem; letter-spacing:.14em; text-transform:uppercase; font-weight:500;
    color:var(--primary-d); display:inline-flex; align-items:center; gap:.6em;
    background:rgba(12,111,214,.09); border:1px solid rgba(12,111,214,.2); padding:6px 13px; border-radius:100px; }
  .sale-flag i{ width:8px; height:8px; border-radius:50%; background:var(--teal); animation:pulse 2.2s infinite; }
  .sale-dom{ font-family:var(--display); font-weight:800; letter-spacing:-.02em; line-height:1.05;
    font-size:clamp(1.9rem,4.4vw,3rem); margin:16px 0 12px; color:var(--ink); }
  .sale-dom .d-nrw{ color:var(--cyan); }
  .sale-dom .d-rest{ color:var(--primary-d); }
  .sale-left p{ color:var(--ink2); font-size:1rem; max-width:60ch; }
  .sale-left p .demohint{ color:var(--muted); }
  .sale-right{ display:flex; flex-direction:column; gap:11px; flex:none; min-width:230px; }
  .sale-right .btn{ justify-content:center; }
  .sale-mail{ font-family:var(--mono); font-size:.72rem; color:var(--muted); text-align:center; }
  .sale-mail a{ color:var(--ink2); text-decoration:none; transition:color .2s; }
  .sale-mail a:hover{ color:var(--primary); }
  @media (max-width:760px){ .sale-band .wrap{ padding:24px 26px 28px; gap:22px; } .sale-right{ width:100%; min-width:0; } }

  /* floating CTA — persists while the visitor browses the demo */
  .sale-float{ position:fixed; right:20px; bottom:20px; z-index:80; display:inline-flex; align-items:center; gap:.6em;
    font-family:var(--mono); font-size:.72rem; letter-spacing:.04em; text-transform:uppercase; font-weight:500;
    padding:13px 20px; border-radius:100px; background:var(--grad); color:#fff; text-decoration:none;
    box-shadow:0 14px 32px rgba(12,111,214,.4); transition:transform .16s, box-shadow .28s, filter .2s; }
  .sale-float:hover{ transform:translateY(-3px); box-shadow:0 20px 42px rgba(12,111,214,.52); filter:saturate(1.08); }
  .sale-float i{ width:8px; height:8px; border-radius:50%; background:#fff; }
  @media (max-width:520px){ .sale-float{ right:13px; bottom:13px; padding:11px 15px; font-size:.66rem; } .sale-float .ftext-long{ display:none; } }

/* ============================================================= */
/* MULTI-PAGE ADDITIONS — nav active state + home teaser cards    */
/* ============================================================= */
.nav-links a.active{ color:var(--ink); }
.nav-links a.active::after{ content:""; display:block; height:2px; background:var(--grad); border-radius:2px; margin-top:4px; }

.cards-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
@media (max-width:900px){ .cards-3{ grid-template-columns:1fr; } }
.card-link{ display:block; padding:26px 24px 22px; border:1px solid var(--line); border-radius:var(--r-lg);
  background:linear-gradient(180deg, var(--surface) 0%, var(--surface2) 100%);
  text-decoration:none; color:var(--ink); transition:transform .18s, box-shadow .28s, border-color .2s;
  box-shadow:var(--sh-sm); }
.card-link:hover{ transform:translateY(-4px); border-color:rgba(34,211,238,.4); box-shadow:var(--sh); }
.card-link .card-eyebrow{ font-family:var(--mono); font-size:.68rem; letter-spacing:.14em; text-transform:uppercase;
  color:var(--primary-d); display:inline-block; margin-bottom:14px; }
.card-link h3{ font-size:1.25rem; line-height:1.25; margin:0 0 10px; }
.card-link p{ color:var(--ink2); font-size:.96rem; margin:0 0 16px; }
.card-link .card-arrow{ font-family:var(--mono); font-size:.74rem; letter-spacing:.06em; text-transform:uppercase;
  color:var(--cyan); }


/* ============================================================= */
/* AWWA WATER-AUDIT CALCULATOR  (calculator.html only)            */
/* ============================================================= */
#audit-tool { padding: 20px 0 60px; }

/* Toolbar */
.audit-toolbar { display:flex; justify-content:space-between; align-items:flex-end; gap:24px; flex-wrap:wrap; margin-bottom:28px; padding-bottom:22px; border-bottom:1px solid var(--line); }
.audit-toolbar-info { max-width:680px; }
.audit-toolbar-actions { display:flex; gap:8px; flex-wrap:wrap; }
.btn-sm { padding:10px 16px; font-size:.68rem; border-radius:10px; cursor:pointer; }

/* Two-column main layout */
.audit-grid { display:grid; grid-template-columns: minmax(0, 460px) minmax(0, 1fr); gap:28px; align-items:start; }
@media (max-width:1080px){ .audit-grid { grid-template-columns:1fr; } }

/* Inputs side */
.audit-inputs { display:flex; flex-direction:column; gap:12px; }
.audit-group { background:var(--surface); border:1px solid var(--line); border-radius:var(--r); overflow:hidden; transition:border-color .25s; }
.audit-group[open] { border-color:rgba(34,211,238,.32); }
.audit-group > summary { padding:14px 18px; cursor:pointer; font-family:var(--display); font-weight:600; font-size:1rem; color:var(--ink); display:flex; align-items:center; gap:12px; list-style:none; user-select:none; }
.audit-group > summary::-webkit-details-marker { display:none; }
.audit-group > summary::after { content:""; width:8px; height:8px; border-right:2px solid var(--muted); border-bottom:2px solid var(--muted); transform:rotate(-45deg); transition:transform .2s; margin-left:6px; }
.audit-group[open] > summary::after { transform:rotate(45deg); }
.g-num { display:inline-flex; align-items:center; justify-content:center; width:26px; height:26px; border-radius:50%; background:var(--grad); color:#fff; font-family:var(--mono); font-size:.78rem; font-weight:700; flex-shrink:0; }
.g-title { flex-shrink:0; }
.g-derived { margin-left:auto; font-family:var(--mono); font-size:.74rem; color:var(--muted); font-weight:400; text-align:right; }
.g-derived b { color:var(--ink); }
.audit-fields { padding:4px 18px 18px; display:grid; grid-template-columns:1fr 1fr; gap:14px 16px; }
.audit-fields label { display:flex; flex-direction:column; gap:6px; font-family:var(--mono); font-size:.66rem; letter-spacing:.05em; color:var(--ink2); font-weight:500; text-transform:uppercase; }
.audit-fields label.f-col2 { grid-column:1 / -1; }
.audit-fields .hint { text-transform:none; letter-spacing:0; font-weight:400; color:var(--muted); font-size:.68rem; }
.audit-fields input[type="number"] {
  background:var(--bg-tint); border:1px solid var(--line2); border-radius:8px; color:var(--ink);
  padding:10px 12px; font-family:var(--mono); font-size:.94rem; outline:none;
  transition:border-color .15s, box-shadow .15s; width:100%; box-sizing:border-box;
}
.audit-fields input[type="number"]:focus { border-color:var(--cyan); box-shadow:0 0 0 3px rgba(34,211,238,.18); }
.input-with-action { display:flex; gap:8px; align-items:center; }
.input-with-action input { flex:1; }
.link-btn { background:transparent; border:1px solid var(--line2); color:var(--cyan); font-family:var(--mono); font-size:.66rem; padding:9px 10px; border-radius:6px; cursor:pointer; text-transform:uppercase; letter-spacing:.05em; transition:background .15s, color .15s; white-space:nowrap; }
.link-btn:hover { background:rgba(34,211,238,.1); }

/* Outputs side */
.audit-outputs { display:flex; flex-direction:column; gap:18px; position:sticky; top:20px; }
@media (max-width:1080px){ .audit-outputs { position:static; } }

/* KPI dashboard */
.kpi-dash { display:grid; grid-template-columns:repeat(4, 1fr); gap:10px; }
@media (max-width:780px){ .kpi-dash { grid-template-columns:repeat(2, 1fr); } }
.kpi-card { padding:14px 16px; background:var(--surface); border:1px solid var(--line); border-radius:var(--r); position:relative; }
.kpi-card.kpi-feature { grid-column:span 2; background:linear-gradient(135deg, var(--surface) 0%, var(--surface2) 100%); border-color:rgba(34,211,238,.35); }
@media (max-width:780px){ .kpi-card.kpi-feature, .kpi-card.kpi-cost { grid-column:span 2; } }
.kpi-card.kpi-cost { grid-column:span 2; }
.kpi-lab { font-family:var(--mono); font-size:.64rem; letter-spacing:.08em; text-transform:uppercase; color:var(--muted); margin-bottom:6px; }
.kpi-val { font-family:var(--display); font-weight:700; font-size:1.7rem; line-height:1; color:var(--ink); }
.kpi-feature .kpi-val { font-size:2.6rem; background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
.kpi-unit { font-family:var(--mono); font-size:.7rem; color:var(--ink2); margin-top:4px; }
.kpi-band { display:inline-block; margin-top:8px; font-family:var(--mono); font-size:.62rem; letter-spacing:.08em; text-transform:uppercase; padding:3px 10px; border-radius:100px; border:1px solid transparent; }
.kpi-band.ok    { background:rgba(27,198,172,.14); color:#5ce0c4; border-color:rgba(27,198,172,.38); }
.kpi-band.watch { background:rgba(245,176,74,.14); color:#fdc97a; border-color:rgba(245,176,74,.4); }
.kpi-band.high  { background:rgba(255,111,111,.14); color:#ff9c9c; border-color:rgba(255,111,111,.4); }
.kpi-foot { font-family:var(--mono); font-size:.62rem; color:var(--muted2); margin-top:6px; line-height:1.4; }

/* Water balance visualization */
.wb-viz { background:var(--surface); border:1px solid var(--line); border-radius:var(--r); padding:20px; }
.wb-head { display:flex; justify-content:space-between; align-items:baseline; margin-bottom:14px; gap:10px; flex-wrap:wrap; }
.wb-head h3 { font-size:1rem; margin:0; }
.wb-hint { font-family:var(--mono); font-size:.66rem; color:var(--muted); }
.wb-table { display:flex; flex-direction:column; gap:3px; border-radius:8px; overflow:hidden; }
.wb-row { display:flex; gap:3px; min-height:78px; }
.wb-cell { padding:11px 10px; font-family:var(--mono); text-align:center; color:#fff; min-width:46px; transition:flex-grow .55s cubic-bezier(.5,0,.2,1); overflow:hidden; display:flex; flex-direction:column; justify-content:center; align-items:center; gap:3px; border-radius:4px; }
.wb-lab { font-size:.66rem; letter-spacing:.06em; text-transform:uppercase; opacity:.92; }
.wb-val { font-family:var(--display); font-size:1.15rem; font-weight:700; line-height:1; }
.wb-val small { font-family:var(--mono); font-size:.6rem; font-weight:400; opacity:.85; margin-left:3px; }
.wb-sub { font-size:.62rem; opacity:.78; }
.wb-siv      { flex:1; background:linear-gradient(135deg, #1c5d96, #2671b3); }
.wb-auth     { background:linear-gradient(135deg, #14796c, #1ba185); }
.wb-wl       { background:linear-gradient(135deg, #a83b2b, #d65846); }
.wb-billed   { background:linear-gradient(135deg, #0e6e58, #14997a); }
.wb-unbilled { background:linear-gradient(135deg, #7a6325, #a08334); }
.wb-app      { background:linear-gradient(135deg, #6d4017, #91561f); }
.wb-real     { background:linear-gradient(135deg, #8c2d20, #b8453a); }
.wb-legend { display:flex; justify-content:space-between; margin-top:12px; font-family:var(--mono); font-size:.7rem; flex-wrap:wrap; gap:8px; }
.wb-legend i { display:inline-block; width:10px; height:10px; border-radius:2px; margin-right:6px; vertical-align:middle; }
.wb-leg-rev { color:#5ce0c4; }
.wb-leg-rev i { background:linear-gradient(135deg, #0e6e58, #14997a); }
.wb-leg-nrw { color:#ff9c9c; }
.wb-leg-nrw i { background:linear-gradient(135deg, #a83b2b, #d65846); }

/* Recommendations + validity panels */
.rec-panel, .validity { background:var(--surface); border:1px solid var(--line); border-radius:var(--r); padding:20px; }
.rec-head { display:flex; justify-content:space-between; align-items:baseline; margin-bottom:12px; gap:10px; flex-wrap:wrap; }
.rec-head h3 { font-size:1rem; margin:0; }
.rec-list { list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:8px; }
.rec-item { padding:11px 14px; background:var(--bg-tint); border-left:3px solid var(--cyan); border-radius:0 8px 8px 0; font-size:.92rem; color:var(--ink2); line-height:1.5; }
.rec-item b { color:var(--ink); }
.rec-item.rec-high { border-left-color:#ff6f6f; }
.rec-item.rec-med  { border-left-color:#f5b04a; }
.rec-item.rec-low  { border-left-color:#1bc6ac; }

/* Validity */
.validity-bar { width:100%; height:8px; background:var(--bg-tint); border-radius:100px; overflow:hidden; margin-bottom:10px; }
.validity-fill { height:100%; background:var(--grad); border-radius:100px; transition:width .35s ease; }
.validity-info { font-family:var(--mono); font-size:.84rem; color:var(--ink2); }
.validity-grade b { color:var(--ink); font-family:var(--display); font-size:1.2rem; }
.validity-label { color:var(--muted); margin-left:8px; font-size:.78rem; }

/* Footnote */
.audit-footnote { margin-top:28px; padding:20px 22px; background:var(--surface2); border:1px solid var(--line); border-radius:var(--r); }
.audit-footnote .hint { font-size:.78rem; color:var(--muted); line-height:1.65; }
.audit-footnote code { font-family:var(--mono); background:rgba(34,211,238,.1); padding:2px 7px; border-radius:4px; color:var(--cyan); font-size:.8rem; }
.audit-footnote sub { font-size:.7em; }

/* Print styles */
@media print {
  .sale-band, .sale-float, .topbar, header, footer, .audit-toolbar-actions, .ph-section, .nav-cta { display:none !important; }
  body { background:white !important; color:black !important; }
  .audit-grid { grid-template-columns:1fr; }
  .audit-outputs { position:static; }
  .audit-group { break-inside:avoid; border:1px solid #ccc !important; background:#fff !important; color:#000; }
  .audit-group summary, .g-derived b, .audit-fields label { color:#000 !important; }
  .audit-fields input { background:#fff !important; color:#000 !important; border:1px solid #999 !important; }
  .kpi-card, .wb-viz, .rec-panel, .validity, .audit-footnote { break-inside:avoid; border:1px solid #ccc !important; background:#fff !important; color:#000 !important; }
  .kpi-lab, .kpi-foot, .wb-hint, .audit-footnote .hint { color:#444 !important; }
  .kpi-val, .validity-grade b, h1, h2, h3 { color:#000 !important; }
  .kpi-feature .kpi-val { -webkit-text-fill-color:#000; color:#000 !important; background:none !important; }
  .wb-cell { color:#fff !important; }  /* keep the colored balance bars */
  .rec-item { background:#f4f4f4 !important; color:#222 !important; }
}


/* ============================================================= */
/* AWWA CALCULATOR v2 — per-input grading, references, carbon     */
/* ============================================================= */

/* Replace 2-col grid with single-column to fit grade + value + caption */
.audit-fields-v2 { padding:8px 18px 18px; display:flex; flex-direction:column; gap:14px; }
.audit-input { display:flex; flex-direction:column; gap:6px; }
.ai-label { font-family:var(--mono); font-size:.68rem; letter-spacing:.05em; color:var(--ink2); font-weight:500; text-transform:uppercase; }
.ai-label .hint { text-transform:none; letter-spacing:0; font-weight:400; color:var(--muted); font-size:.7rem; margin-left:4px; }
.ai-row { display:flex; gap:8px; align-items:center; flex-wrap:wrap; }
.ai-row input[type="number"] {
  flex:1; min-width:120px;
  background:var(--bg-tint); border:1px solid var(--line2); border-radius:8px; color:var(--ink);
  padding:9px 12px; font-family:var(--mono); font-size:.92rem; outline:none;
  transition:border-color .15s, box-shadow .15s;
}
.ai-row input[type="number"]:focus { border-color:var(--cyan); box-shadow:0 0 0 3px rgba(34,211,238,.18); }
.ai-row input[type="number"]:disabled { opacity:.5; cursor:not-allowed; }

/* Grade picker */
.grade-pick {
  background:var(--bg-tint); border:1px solid var(--line2); border-radius:8px; color:var(--ink);
  padding:9px 10px; font-family:var(--mono); font-size:.84rem; outline:none; cursor:pointer; min-width:74px;
  transition:border-color .15s, box-shadow .15s; appearance:none;
  background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 14px) 50%,calc(100% - 9px) 50%;
  background-size:5px 5px,5px 5px; background-repeat:no-repeat;
  padding-right:26px;
}
.grade-pick:hover { border-color:var(--cyan); }
.grade-pick:focus { border-color:var(--cyan); box-shadow:0 0 0 3px rgba(34,211,238,.18); }
.grade-pick:disabled { opacity:.5; cursor:not-allowed; }

/* Grade-caption text below input */
.grade-caption { font-family:var(--mono); font-size:.72rem; color:var(--muted); line-height:1.45; padding-left:2px; border-left:2px solid rgba(34,211,238,.3); padding:4px 0 4px 10px; }

/* Meters-at-curb toggle */
.ai-toggle { padding:12px 14px; background:var(--bg-tint); border:1px dashed var(--line2); border-radius:10px; margin-bottom:6px; }
.checkbox { display:flex; align-items:flex-start; gap:9px; cursor:pointer; font-size:.88rem; color:var(--ink2); }
.checkbox input[type="checkbox"] { margin-top:2px; accent-color:var(--cyan); width:16px; height:16px; flex-shrink:0; }

/* Priority Areas list */
.priority-list { list-style:none; padding:0; margin:0; counter-reset:pa-counter; display:flex; flex-direction:column; gap:10px; }
.priority-item { counter-increment:pa-counter; padding:13px 16px 14px 50px; background:var(--bg-tint); border-radius:10px; position:relative; border:1px solid var(--line); }
.priority-item::before { content:counter(pa-counter); position:absolute; left:14px; top:13px; width:26px; height:26px; border-radius:50%; background:var(--surface2); border:1px solid var(--line2); display:flex; align-items:center; justify-content:center; font-family:var(--mono); font-weight:700; color:var(--ink); font-size:.84rem; }
.priority-item.priority-high { border-left:3px solid #ff6f6f; }
.priority-item.priority-high::before { background:rgba(255,111,111,.18); border-color:rgba(255,111,111,.4); color:#ff9c9c; }
.priority-item.priority-med  { border-left:3px solid #f5b04a; }
.priority-item.priority-med::before { background:rgba(245,176,74,.18); border-color:rgba(245,176,74,.4); color:#fdc97a; }
.priority-item.priority-low  { border-left:3px solid #1bc6ac; }
.priority-item.priority-low::before { background:rgba(27,198,172,.18); border-color:rgba(27,198,172,.4); color:#5ce0c4; }
.pi-head { display:flex; justify-content:space-between; align-items:baseline; gap:10px; margin-bottom:6px; flex-wrap:wrap; }
.pi-label { font-family:var(--display); font-weight:600; color:var(--ink); font-size:.96rem; }
.pi-grade { font-family:var(--mono); font-size:.7rem; color:var(--muted); text-transform:uppercase; letter-spacing:.05em; }
.pi-tip { color:var(--ink2); font-size:.88rem; line-height:1.5; }

/* References (full-width section) */
.audit-refs { margin-top:32px; display:flex; flex-direction:column; gap:14px; }
.ref-panel { background:var(--surface); border:1px solid var(--line); border-radius:var(--r); overflow:hidden; transition:border-color .25s; }
.ref-panel[open] { border-color:rgba(34,211,238,.32); }
.ref-panel > summary { padding:18px 22px; cursor:pointer; font-family:var(--display); font-weight:600; font-size:1.06rem; color:var(--ink); display:flex; align-items:center; gap:14px; list-style:none; user-select:none; }
.ref-panel > summary::-webkit-details-marker { display:none; }
.ref-panel > summary::after { content:""; width:9px; height:9px; border-right:2px solid var(--muted); border-bottom:2px solid var(--muted); transform:rotate(-45deg); transition:transform .2s; margin-left:auto; }
.ref-panel[open] > summary::after { transform:rotate(45deg); }
.ref-num { display:inline-flex; align-items:center; justify-content:center; width:32px; height:32px; border-radius:6px; background:var(--bg-tint); border:1px solid var(--line2); color:var(--ink); font-family:var(--mono); font-weight:700; font-size:.86rem; }
.ref-title { flex-shrink:0; }
.ref-tag { display:inline-block; margin-left:8px; padding:2px 8px; border-radius:100px; background:linear-gradient(90deg, rgba(27,198,172,.18), rgba(34,211,238,.18)); border:1px solid rgba(27,198,172,.4); color:#5ce0c4; font-family:var(--mono); font-size:.62rem; font-weight:500; letter-spacing:.06em; text-transform:uppercase; }
.ref-hint { color:var(--muted); font-family:var(--mono); font-size:.74rem; font-weight:400; }
@media (max-width:680px){ .ref-hint { display:none; } }

/* Glossary inside ref */
.gloss { margin:8px 22px 22px; padding:0; display:grid; grid-template-columns:1fr; gap:0; }
.gloss-row { padding:14px 0; border-bottom:1px solid var(--line); display:grid; grid-template-columns:240px 1fr; gap:24px; align-items:baseline; }
.gloss-row:last-child { border-bottom:none; }
.gloss-row dt { font-family:var(--display); font-weight:600; color:var(--ink); font-size:.96rem; }
.gloss-row dd { color:var(--ink2); font-size:.92rem; line-height:1.55; margin:0; }
@media (max-width:780px){ .gloss-row { grid-template-columns:1fr; gap:4px; } }

/* Grading Matrix grid */
.gm-grid { padding:8px 22px 22px; display:flex; flex-direction:column; gap:18px; }
.gm-row { border:1px solid var(--line); border-radius:10px; overflow:hidden; }
.gm-head { padding:11px 14px; background:var(--bg-tint); display:flex; justify-content:space-between; align-items:baseline; gap:10px; flex-wrap:wrap; }
.gm-label { font-family:var(--display); font-weight:600; color:var(--ink); font-size:.96rem; }
.gm-w { font-family:var(--mono); font-size:.7rem; color:var(--muted); text-transform:uppercase; letter-spacing:.05em; }
.gm-cells { display:grid; grid-template-columns:repeat(2, 1fr); gap:1px; background:var(--line); }
@media (min-width:980px){ .gm-cells { grid-template-columns:repeat(5, 1fr); } }
.gm-cell { padding:10px 12px; background:var(--surface); display:flex; gap:10px; align-items:flex-start; }
.gm-grade { flex-shrink:0; font-family:var(--mono); font-weight:700; font-size:.74rem; color:var(--cyan); padding:2px 7px; background:rgba(34,211,238,.1); border-radius:4px; min-width:30px; text-align:center; }
.gm-g10 .gm-grade { color:#5ce0c4; background:rgba(27,198,172,.18); }
.gm-g1 .gm-grade, .gm-g2 .gm-grade { color:#ff9c9c; background:rgba(255,111,111,.14); }
.gm-text { font-size:.78rem; color:var(--ink2); line-height:1.5; }

/* Carbon Balance */
.ref-carbon[open] { border-color:rgba(27,198,172,.4); }
.cb-body { padding:6px 22px 22px; }
.cb-grid { display:grid; grid-template-columns:repeat(3, 1fr); gap:14px; margin-bottom:18px; }
@media (max-width:780px){ .cb-grid { grid-template-columns:1fr; } }
.cb-results { display:grid; grid-template-columns:1fr 1.4fr 1fr; gap:12px; }
@media (max-width:780px){ .cb-results { grid-template-columns:1fr; } }
.cb-result { padding:16px 18px; background:var(--bg-tint); border:1px solid var(--line); border-radius:10px; text-align:center; }
.cb-result-main { background:linear-gradient(135deg, rgba(27,198,172,.12) 0%, rgba(34,211,238,.08) 100%); border-color:rgba(27,198,172,.4); }
.cb-lab { font-family:var(--mono); font-size:.66rem; letter-spacing:.06em; text-transform:uppercase; color:var(--muted); margin-bottom:8px; }
.cb-val { font-family:var(--display); font-weight:700; font-size:1.6rem; color:var(--ink); line-height:1; }
.cb-result-main .cb-val { font-size:2rem; background:linear-gradient(120deg,#1bc6ac,#22d3ee); -webkit-background-clip:text; background-clip:text; color:transparent; }
.cb-val small { font-family:var(--mono); font-size:.66rem; font-weight:400; opacity:.85; margin-left:4px; -webkit-text-fill-color:var(--ink2); color:var(--ink2); }

/* Print adjustments for new sections */
@media print {
  .audit-fields-v2 { padding:8px 14px 14px; }
  .grade-caption { color:#333 !important; border-left-color:#999 !important; }
  .grade-pick { background:#fff !important; color:#000 !important; border:1px solid #999 !important; }
  .priority-item { background:#f4f4f4 !important; color:#222 !important; }
  .priority-item::before { background:#fff !important; color:#000 !important; border-color:#999 !important; }
  .pi-label, .pi-tip { color:#000 !important; }
  .ref-panel { background:#fff !important; border:1px solid #ccc !important; }
  .ref-panel > summary { color:#000 !important; }
  .ref-num { background:#f4f4f4 !important; color:#000 !important; border-color:#999 !important; }
  .gloss-row dt, .gloss-row dd, .gm-label, .gm-text { color:#000 !important; }
  .gm-cell { background:#fff !important; }
  .gm-head { background:#f4f4f4 !important; }
  .cb-result { background:#f4f4f4 !important; color:#000 !important; border-color:#999 !important; }
  .cb-val, .cb-lab { color:#000 !important; }
  .cb-result-main .cb-val { -webkit-text-fill-color:#000; color:#000 !important; background:none !important; }
  .ref-panel:not([open]) > summary::after { content:""; }
  /* Force all reference panels open in print */
  .ref-panel { -webkit-print-color-adjust:exact; }
}


/* ============================================================= */
/* AWWA CALCULATOR v3 — Infographics, PI table, LCP, AI panel     */
/* ============================================================= */

/* Infographics grid */
.infog-panel { background:var(--surface); border:1px solid var(--line); border-radius:var(--r); padding:20px; }
.infog-grid { display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-top:6px; }
@media (max-width:680px){ .infog-grid { grid-template-columns:1fr; } }
.infog-card { background:var(--bg-tint); border:1px solid var(--line); border-radius:10px; padding:14px 14px 12px; display:flex; flex-direction:column; gap:10px; }
.infog-card-wide { grid-column:1 / -1; }
.infog-cap { font-family:var(--mono); font-size:.7rem; letter-spacing:.06em; text-transform:uppercase; color:var(--muted); }
.infog-cap .infog-sub { text-transform:none; letter-spacing:0; }
.infog-foot { display:flex; justify-content:space-between; align-items:center; gap:10px; flex-wrap:wrap; }
.infog-note { font-family:var(--mono); font-size:.66rem; color:var(--muted); }

/* ILI Gauge */
.ili-gauge { width:100%; height:auto; max-width:240px; align-self:center; }
.ili-band-tag { font-family:var(--mono); font-size:.66rem; letter-spacing:.06em; text-transform:uppercase; padding:3px 9px; border-radius:100px; border:1px solid transparent; background:rgba(150,195,215,.1); color:var(--ink2); }
.ili-band-tag.ok    { background:rgba(27,198,172,.16); color:#5ce0c4; border-color:rgba(27,198,172,.4); }
.ili-band-tag.watch { background:rgba(245,176,74,.16); color:#fdc97a; border-color:rgba(245,176,74,.4); }
.ili-band-tag.high  { background:rgba(255,111,111,.16); color:#ff9c9c; border-color:rgba(255,111,111,.4); }

/* Loss donut */
.loss-donut { width:100%; height:auto; max-width:240px; align-self:center; }
.loss-donut circle { transition:stroke-dasharray .55s cubic-bezier(.5,0,.2,1), stroke-dashoffset .55s cubic-bezier(.5,0,.2,1); }
.infog-legend4 { display:grid; grid-template-columns:1fr 1fr; gap:4px 12px; }
.infog-legend4 span { font-family:var(--mono); font-size:.68rem; color:var(--ink2); display:flex; align-items:center; gap:6px; }
.infog-legend4 i { display:inline-block; width:10px; height:10px; border-radius:2px; }

/* Cost stacked bar */
.cost-bar-wrap { display:flex; flex-direction:column; gap:10px; }
.cost-bar { display:flex; height:36px; border-radius:6px; overflow:hidden; gap:2px; }
.cb-seg { display:flex; align-items:center; justify-content:center; min-width:46px; color:#fff; font-family:var(--mono); font-size:.66rem; letter-spacing:.04em; text-transform:uppercase; padding:0 8px; transition:flex-grow .5s cubic-bezier(.5,0,.2,1); overflow:hidden; white-space:nowrap; }
.cb-real { background:linear-gradient(135deg,#8c2d20,#b8453a); }
.cb-app  { background:linear-gradient(135deg,#6d4017,#91561f); }
.cb-unb  { background:linear-gradient(135deg,#7a6325,#a08334); }
.cost-bar-totals { display:flex; justify-content:space-between; gap:12px; font-family:var(--mono); }
.cost-bar-totals span { display:flex; flex-direction:column; gap:2px; flex:1; }
.cost-bar-totals b { font-family:var(--display); font-size:1.05rem; color:var(--ink); font-weight:700; }
.cost-bar-totals small { font-size:.62rem; color:var(--muted); }

/* Service connection diagram */
.scd { width:100%; height:auto; max-height:160px; }
.scd #scdLp, .scd #scdLpBracket { transition:opacity .3s; }

/* Performance Indicators table */
.pi-table { background:var(--surface); border:1px solid var(--line); border-radius:var(--r); padding:18px 20px; }
.pi-grid { width:100%; border-collapse:collapse; margin-top:6px; font-family:var(--body); }
.pi-grid td { padding:9px 6px; border-bottom:1px solid var(--line); color:var(--ink2); font-size:.88rem; vertical-align:top; }
.pi-grid tr:last-child td { border-bottom:none; }
.pi-grid td.pi-num { font-family:var(--mono); color:var(--ink); font-weight:600; text-align:right; white-space:nowrap; min-width:90px; }
.pi-grid td.pi-note { font-family:var(--mono); font-size:.72rem; color:var(--muted); text-align:right; }
.pi-grid tr.pi-section td { font-family:var(--mono); font-size:.7rem; letter-spacing:.08em; text-transform:uppercase; color:var(--primary-d); border-bottom:none; padding-top:14px; padding-bottom:6px; }
.pi-grid td .hint { font-family:var(--mono); font-size:.7rem; color:var(--muted); }
@media (max-width:680px){
  .pi-grid td.pi-note { display:none; }
}

/* Loss Control Planning Guide */
.lcp-panel { background:var(--surface); border:1px solid var(--line); border-radius:var(--r); padding:18px 20px; }
.lcp-body { display:grid; grid-template-columns:160px 1fr; gap:18px; margin-top:8px; }
@media (max-width:680px){ .lcp-body { grid-template-columns:1fr; } }
.lcp-current { background:var(--bg-tint); border:1px solid var(--line); border-radius:10px; padding:14px; display:flex; flex-direction:column; gap:8px; align-items:flex-start; }
.lcp-lab { font-family:var(--mono); font-size:.66rem; letter-spacing:.08em; text-transform:uppercase; color:var(--muted); }
.lcp-level b { font-family:var(--display); font-size:2.2rem; font-weight:700; color:var(--ink); line-height:1; background:var(--grad); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; }
.lcp-level span { font-family:var(--mono); font-size:.72rem; color:var(--ink2); display:block; margin-top:4px; }
.lcp-stage h4 { font-size:1rem; margin:0 0 8px; }
.lcp-stage p { color:var(--ink2); font-size:.92rem; margin:0 0 12px; line-height:1.55; }
.lcp-actions { list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:6px; }
.lcp-actions li { padding:9px 12px; background:var(--bg-tint); border-radius:8px; font-size:.88rem; color:var(--ink2); position:relative; padding-left:30px; }
.lcp-actions li::before { content:"→"; position:absolute; left:11px; top:9px; color:var(--cyan); font-family:var(--mono); font-weight:700; }

/* ===== AI Panel ===== */
.ai-panel { margin-top:32px; background:linear-gradient(135deg, var(--surface) 0%, var(--surface2) 100%); border:1px solid rgba(34,211,238,.32); border-radius:var(--r); padding:24px; position:relative; overflow:hidden; }
.ai-panel::before {
  content:""; position:absolute; top:-50%; right:-20%; width:60%; height:160%;
  background:radial-gradient(circle, rgba(34,211,238,.08), transparent 60%);
  pointer-events:none;
}
.ai-head { display:flex; justify-content:space-between; align-items:flex-end; gap:20px; margin-bottom:18px; position:relative; z-index:1; flex-wrap:wrap; }
.ai-head h3 { font-size:1.3rem; margin:6px 0 0; }

/* AI settings drawer */
.ai-settings { background:var(--bg-tint); border:1px solid var(--line); border-radius:10px; padding:18px 20px; margin-bottom:18px; position:relative; z-index:1; }
.ai-settings-grid { display:grid; grid-template-columns:160px 240px 1fr; gap:14px; align-items:end; }
@media (max-width:780px){ .ai-settings-grid { grid-template-columns:1fr; } }
.ai-label { display:block; font-family:var(--mono); font-size:.66rem; letter-spacing:.06em; text-transform:uppercase; color:var(--ink2); margin-bottom:6px; }
.ai-settings select, .ai-settings input[type="password"], .ai-settings input[type="text"] {
  width:100%; background:var(--surface); border:1px solid var(--line2); border-radius:8px; color:var(--ink);
  padding:10px 12px; font-family:var(--mono); font-size:.88rem; outline:none;
  transition:border-color .15s, box-shadow .15s;
}
.ai-settings select:focus, .ai-settings input:focus { border-color:var(--cyan); box-shadow:0 0 0 3px rgba(34,211,238,.18); }
.ai-key-input { display:flex; gap:6px; }
.ai-key-input input { flex:1; }
.ai-settings-foot { display:flex; justify-content:space-between; align-items:center; gap:14px; margin-top:14px; flex-wrap:wrap; }
.ai-settings-foot .hint { flex:1; max-width:65ch; font-size:.78rem; }
.ai-settings-foot code { font-family:var(--mono); background:rgba(34,211,238,.1); padding:1px 6px; border-radius:3px; color:var(--cyan); font-size:.78rem; }
.ai-settings-foot a { color:var(--cyan); text-decoration:underline; }
.ai-settings-actions { display:flex; gap:8px; flex-wrap:wrap; }

/* AI action grid */
.ai-actions-grid { display:grid; grid-template-columns:1fr 1fr; gap:18px; position:relative; z-index:1; }
@media (max-width:880px){ .ai-actions-grid { grid-template-columns:1fr; } }
.ai-action { background:var(--bg-tint); border:1px solid var(--line); border-radius:10px; padding:18px 20px; display:flex; flex-direction:column; gap:12px; }
.ai-action-head { display:flex; justify-content:space-between; align-items:baseline; gap:10px; }
.ai-action-head h4 { font-size:1.04rem; margin:0; }
.ai-action .hint { font-size:.82rem; color:var(--muted); line-height:1.5; margin:0; }

/* AI output / chat */
.ai-output { min-height:120px; background:var(--surface); border:1px solid var(--line); border-radius:8px; padding:14px 16px; font-size:.92rem; line-height:1.6; color:var(--ink2); }
.ai-placeholder { color:var(--muted); font-style:italic; }
.ai-text p { margin:0 0 12px; color:var(--ink2); }
.ai-text p:last-child { margin-bottom:0; }
.ai-text p strong, .ai-text p b { color:var(--ink); }

.ai-loading { display:flex; align-items:center; gap:10px; color:var(--ink2); font-size:.9rem; }
.ai-spin {
  display:inline-block; width:14px; height:14px; border:2px solid var(--line2);
  border-top-color:var(--cyan); border-radius:50%; animation:aiSpin 0.7s linear infinite;
}
@keyframes aiSpin { to { transform:rotate(360deg); } }

.ai-err { background:rgba(255,111,111,.08); border:1px solid rgba(255,111,111,.32); border-radius:6px; padding:10px 14px; color:#ff9c9c; font-size:.88rem; }
.ai-err b { color:#ffb8b8; }
.ai-err a { color:#ffd0d0; text-decoration:underline; }

/* Chat */
.ai-chat { min-height:160px; max-height:340px; overflow-y:auto; background:var(--surface); border:1px solid var(--line); border-radius:8px; padding:12px; display:flex; flex-direction:column; gap:10px; }
.ai-chat .ai-placeholder { font-size:.88rem; }
.ai-msg { display:flex; flex-direction:column; gap:4px; }
.ai-msg-role { font-family:var(--mono); font-size:.62rem; letter-spacing:.08em; text-transform:uppercase; color:var(--muted); }
.ai-msg-body { padding:10px 14px; border-radius:10px; font-size:.9rem; line-height:1.55; }
.ai-msg-body p { margin:0 0 8px; }
.ai-msg-body p:last-child { margin-bottom:0; }
.ai-msg-user .ai-msg-role { color:var(--cyan); }
.ai-msg-user .ai-msg-body { background:rgba(34,211,238,.08); border:1px solid rgba(34,211,238,.24); color:var(--ink); align-self:flex-end; max-width:85%; }
.ai-msg-assistant .ai-msg-role { color:#5ce0c4; }
.ai-msg-assistant .ai-msg-body { background:var(--bg-tint); border:1px solid var(--line); color:var(--ink2); }

.ai-ask { display:flex; gap:8px; }
.ai-ask input { flex:1; background:var(--surface); border:1px solid var(--line2); border-radius:8px; color:var(--ink); padding:10px 14px; font-family:var(--body); font-size:.92rem; outline:none; transition:border-color .15s, box-shadow .15s; }
.ai-ask input:focus { border-color:var(--cyan); box-shadow:0 0 0 3px rgba(34,211,238,.18); }
.ai-ask button { white-space:nowrap; }

/* Print adjustments */
@media print {
  .ai-panel, .infog-panel { background:#fff !important; border:1px solid #ccc !important; color:#000 !important; }
  .ai-panel::before { display:none; }
  .ai-action, .ai-settings, .infog-card { background:#f4f4f4 !important; border-color:#ccc !important; color:#000 !important; }
  .ai-output, .ai-chat { background:#fff !important; }
  .ai-msg-user .ai-msg-body, .ai-msg-assistant .ai-msg-body { background:#f4f4f4 !important; color:#000 !important; }
  .pi-table { background:#fff !important; color:#000 !important; border-color:#ccc !important; }
  .pi-grid td, .pi-grid tr.pi-section td { color:#000 !important; border-color:#ccc !important; }
  .lcp-panel, .lcp-current, .lcp-actions li { background:#fff !important; color:#000 !important; border-color:#ccc !important; }
  .lcp-level b { -webkit-text-fill-color:#000; color:#000 !important; background:none !important; }
  .cb-seg, .wb-cell { color:#fff !important; }  /* keep bar colours */
}


/* ============================================================= */
/* v4 — Self-guided step nav + Field-help popups                  */
/* ============================================================= */

/* Sticky step navigation */
.step-nav {
  position: sticky; top: 0; z-index: 60;
  display: flex; align-items: center; gap: 4px; flex-wrap: nowrap;
  overflow-x: auto; padding: 14px 18px;
  background: linear-gradient(180deg, rgba(11,31,46,.96), rgba(11,31,46,.92));
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--line); border-radius: 12px;
  margin: 0 0 22px;
  scrollbar-width: thin;
}
.step-nav::-webkit-scrollbar { height: 4px; }
.step-nav::-webkit-scrollbar-thumb { background: var(--line2); border-radius: 2px; }

.step-item {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 12px; border-radius: 8px;
  text-decoration: none; color: var(--ink2);
  font-family: var(--mono); font-size: .72rem; letter-spacing: .04em;
  white-space: nowrap; flex-shrink: 0;
  transition: background .15s, color .15s, transform .1s;
  cursor: pointer;
}
.step-item:hover { background: rgba(34,211,238,.08); color: var(--ink); }
.step-item.is-active { background: rgba(34,211,238,.14); color: var(--ink); border: 1px solid rgba(34,211,238,.32); }
.step-item.is-active .step-bubble { background: var(--grad); color: #fff; box-shadow: 0 0 0 3px rgba(34,211,238,.18); }

.step-bubble {
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--bg-tint); border: 1px solid var(--line2);
  color: var(--ink); font-weight: 700; font-size: .76rem;
  transition: background .15s, box-shadow .15s, color .15s;
}
.step-bubble-r { font-size: .9rem; }
.step-item.step-jump .step-bubble { background: rgba(34,211,238,.10); border-color: rgba(34,211,238,.32); color: var(--cyan); }

.step-arrow { color: var(--muted); font-size: .9rem; padding: 0 2px; flex-shrink: 0; }
.step-sep { width: 1px; height: 22px; background: var(--line); margin: 0 8px; flex-shrink: 0; }

@media (max-width: 760px) {
  .step-nav { padding: 10px 12px; gap: 2px; }
  .step-item { padding: 6px 8px; gap: 6px; }
  .step-label { font-size: .68rem; }
  .step-arrow { display: none; }
  .step-sep { margin: 0 4px; }
}

/* Self-guided intro */
.step-intro {
  background: linear-gradient(135deg, rgba(34,211,238,.06), rgba(47,144,230,.04));
  border: 1px solid rgba(34,211,238,.22); border-radius: 10px;
  padding: 12px 16px; margin: 0 0 22px;
  font-size: .9rem; color: var(--ink2); line-height: 1.55;
}
.step-intro b { color: var(--ink); }
.help-trigger-inline {
  display: inline-flex; align-items: center; justify-content: center;
  width: 18px; height: 18px; vertical-align: -3px;
  border-radius: 50%; background: rgba(34,211,238,.16); border: 1px solid rgba(34,211,238,.4);
  color: var(--cyan); font-family: var(--mono); font-size: 11px; font-weight: 600;
}

/* Field-help trigger button */
.help-trigger {
  display: inline-flex; align-items: center; justify-content: center;
  width: 18px; height: 18px; vertical-align: middle;
  margin-left: 6px;
  border-radius: 50%;
  background: rgba(34,211,238,.12); border: 1px solid rgba(34,211,238,.42);
  color: var(--cyan); font-family: var(--mono); font-size: 11px; font-weight: 600;
  cursor: pointer; padding: 0; line-height: 1;
  transition: background .15s, transform .1s, box-shadow .15s;
}
.help-trigger:hover { background: rgba(34,211,238,.26); transform: scale(1.1); box-shadow: 0 0 0 3px rgba(34,211,238,.12); }
.help-trigger:focus { outline: none; box-shadow: 0 0 0 3px rgba(34,211,238,.32); }

/* Field-help popup */
.help-popup {
  position: fixed;
  width: 380px; max-width: calc(100vw - 30px); max-height: 70vh;
  overflow-y: auto;
  background: var(--surface); border: 1px solid rgba(34,211,238,.45);
  border-radius: 12px; padding: 18px 20px 20px;
  box-shadow: 0 24px 60px rgba(0,0,0,.6), 0 4px 10px rgba(0,0,0,.4);
  z-index: 1000;
  opacity: 0; visibility: hidden; transform: translateY(-4px);
  transition: opacity .15s, transform .15s, visibility 0s linear .15s;
  pointer-events: none;
}
.help-popup.is-open {
  opacity: 1; visibility: visible; transform: translateY(0);
  transition: opacity .15s, transform .15s;
  pointer-events: auto;
}
.help-close {
  position: absolute; top: 8px; right: 10px;
  width: 26px; height: 26px; border-radius: 50%;
  background: transparent; border: none; color: var(--muted);
  font-size: 22px; line-height: 1; cursor: pointer;
  transition: background .15s, color .15s;
}
.help-close:hover { background: var(--bg-tint); color: var(--ink); }

.help-title { font-size: 1.05rem; margin: 0 24px 14px 0; color: var(--ink); }

.help-section { margin-bottom: 14px; }
.help-section:last-child { margin-bottom: 0; }
.help-section-lab {
  display: block; font-family: var(--mono); font-size: .64rem;
  letter-spacing: .08em; text-transform: uppercase; color: var(--muted);
  margin-bottom: 4px;
}
.help-section p { margin: 0; color: var(--ink2); font-size: .88rem; line-height: 1.55; }

.help-current-wrap { text-transform: none; letter-spacing: 0; color: var(--ink2); font-weight: 400; margin-left: 8px; }
.help-current-wrap b { color: var(--cyan); font-family: var(--mono); }

.help-grades { display: flex; flex-direction: column; gap: 4px; }
.help-grade-item {
  display: grid; grid-template-columns: 36px 1fr; gap: 8px;
  padding: 5px 8px; border-radius: 5px;
  font-size: .76rem; color: var(--ink2); line-height: 1.4;
}
.help-grade-item.is-current {
  background: rgba(34,211,238,.12); border: 1px solid rgba(34,211,238,.35);
  color: var(--ink);
}
.hg-num {
  font-family: var(--mono); font-weight: 700; font-size: .72rem;
  color: var(--cyan); text-align: center;
  background: rgba(34,211,238,.08); border-radius: 3px; padding: 2px 0;
}
.help-grade-item.is-current .hg-num {
  background: var(--grad); color: #fff;
}
.hg-text { font-size: .78rem; line-height: 1.45; padding-top: 2px; }

/* Mobile popup tweaks */
@media (max-width: 520px) {
  .help-popup { width: calc(100vw - 24px); padding: 16px 18px; max-height: 75vh; }
  .help-title { font-size: 1rem; }
  .help-section p { font-size: .85rem; }
  .hg-text { font-size: .75rem; }
}

/* Print: hide sticky nav and popup */
@media print {
  .step-nav, .step-intro, .help-popup, .help-trigger { display: none !important; }
}


/* ============================================================= */
/* ============================================================= */
/* Login gate — v5 hash-based casual access control               */
/* ============================================================= */

/* By default: gate hidden, calculator visible.
   Early script in <head> adds .is-gated to <html> if not authed,
   which inverts: gate shown, calculator hidden. */
#loginGate { display: none; }
.is-gated #loginGate { display: block; }
.is-gated #audit-tool { display: none !important; }

.login-gate-section { padding: 80px 0 140px; min-height: 60vh; }
.login-card {
  max-width: 460px; margin: 0 auto;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 38px 36px;
  box-shadow: var(--sh-lg);
  position: relative; overflow: hidden;
  /* Defeat any .reveal opacity animation so the form is always visible
     once .is-gated is active */
  opacity: 1 !important; transform: none !important;
}
.login-card::before {
  content: ""; position: absolute; top: -30%; right: -20%;
  width: 70%; height: 160%;
  background: radial-gradient(circle, rgba(34,211,238,.10), transparent 60%);
  pointer-events: none;
}
.login-card > * { position: relative; z-index: 1; }
.login-card .eyebrow { color: var(--primary-d); }
.login-card h2 { font-size: 1.5rem; margin: 10px 0 10px; line-height: 1.25; }
.login-card h2::after { content: " 🔒"; font-size: 1rem; vertical-align: middle; opacity: 0.7; }
.login-card .lede { font-size: .95rem; margin: 0 0 24px; }

.login-form { display: flex; flex-direction: column; gap: 14px; }
.login-field { display: flex; flex-direction: column; gap: 6px; }
.login-lab {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .06em;
  text-transform: uppercase; color: var(--ink2);
}
.login-form input {
  background: var(--bg-tint); border: 1px solid var(--line2);
  border-radius: 8px; color: var(--ink);
  padding: 12px 14px; font-family: var(--mono); font-size: .95rem;
  outline: none; transition: border-color .15s, box-shadow .15s;
  width: 100%; box-sizing: border-box;
}
.login-form input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(34,211,238,.18);
}
.login-submit { margin-top: 8px; justify-content: center; width: 100%; }

.login-err {
  background: rgba(255,111,111,.10);
  border: 1px solid rgba(255,111,111,.36);
  border-radius: 8px; padding: 9px 12px;
  color: #ff9c9c; font-size: .86rem;
}
.login-hint { margin-top: 18px; text-align: center; font-size: .8rem; color: var(--muted); }
.login-hint a { color: var(--cyan); }
.login-hint a:hover { text-decoration: underline; }

/* Sign-out button (toolbar) */
.signout-btn { opacity: .7; }
.signout-btn:hover { opacity: 1; }

@media print {
  .signout-btn { display: none !important; }
  .login-gate-section { display: none !important; }
}

/* v6 — AES-256 encrypted content gate                            */
/* ==========================================================

/* Unlocking… spinner state */
#loginForm button[disabled] {
  opacity: 0.7;
  cursor: progress;
  position: relative;
}