/* ============================================================
   HydroLynx Systems — redesign stylesheet
   Palette: ink #0C2233 · gauge blue #14527F · sky #E9F1F7
            amber #E89B23 (warning-sign accent) · paper #FBFCFD
   Type: Archivo (display) · Source Sans 3 (body) · IBM Plex Mono (part numbers)
   ============================================================ */

:root{
  --ink:#0C2233; --blue:#14527F; --blue-deep:#0E3A5C; --sky:#E9F1F7; --sky-2:#F2F7FA;
  --paper:#FBFCFD; --line:#D7E1E9; --body:#2B3A48; --muted:#5E7184;
  --amber:#E89B23; --amber-deep:#B97713; --green:#2E7D52; --green-bg:#EAF4EE;
  --amber-bg:#FBF1DE; --radius:10px;
  --disp:"Archivo",system-ui,sans-serif; --txt:"Source Sans 3",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
body{margin:0;font-family:var(--txt);color:var(--body);background:var(--paper);font-size:17px;line-height:1.6}
img{max-width:100%;display:block}
a{color:var(--blue)}
a:focus-visible,button:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--amber);outline-offset:2px}
h1,h2,h3,h4{font-family:var(--disp);color:var(--ink);line-height:1.15;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(1.9rem,4.5vw,3rem);font-weight:800}
h2{font-size:clamp(1.5rem,3vw,2.1rem);font-weight:700}
h3{font-size:1.2rem;font-weight:700}
.wrap{max-width:1160px;margin:0 auto;padding:0 22px}
.eyebrow{font-family:var(--disp);font-weight:600;font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);margin:0 0 .6rem}
.lead{font-size:1.15rem;color:var(--muted);max-width:62ch}

/* ---- part-number chip: the site-wide signature ---- */
.pn{font-family:var(--mono);font-size:.78em;font-weight:500;color:var(--blue-deep);
  background:var(--sky);border:1px solid var(--line);border-radius:5px;padding:.1em .45em;
  white-space:nowrap;vertical-align:middle}
.pn.opt{background:#fff}
.pn.spec{background:var(--amber-bg);border-color:#ECCB8E;color:var(--amber-deep)}

/* ---- header / nav ---- */
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:.6rem 1rem;z-index:99}
.skip:focus{left:0}
header.site{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.topbar{display:flex;align-items:center;gap:1.6rem;padding:.7rem 22px;max-width:1160px;margin:0 auto}
.topbar img.logo{height:44px;width:auto;flex:0 0 auto;object-fit:contain}
nav.main{margin-left:auto;display:flex;gap:.2rem;flex-wrap:wrap}
nav.main a{font-family:var(--disp);font-weight:600;font-size:.92rem;color:var(--ink);text-decoration:none;
  padding:.5rem .75rem;border-radius:6px}
nav.main a:hover{background:var(--sky)}
nav.main a[aria-current="page"]{color:var(--blue);box-shadow:inset 0 -3px 0 var(--amber)}
nav.main a.cta{background:var(--blue);color:#fff;margin-left:.4rem}
nav.main a.cta:hover{background:var(--blue-deep)}
.crumbs{font-size:.85rem;color:var(--muted);padding:.9rem 0 0}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--blue);text-decoration:underline}

/* ---- hero ---- */
.hero{position:relative;color:#fff;background:var(--ink)}
.hero .bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5}
.hero .inner{position:relative;padding:5.5rem 22px 6.5rem;max-width:1160px;margin:0 auto}
.hero h1{color:#fff;max-width:17ch}
.hero p{max-width:56ch;font-size:1.18rem;color:#D9E6F0}
.hero .eyebrow{color:var(--amber)}
.btn{display:inline-block;font-family:var(--disp);font-weight:700;font-size:.98rem;text-decoration:none;
  padding:.78rem 1.4rem;border-radius:8px;border:2px solid transparent}
.btn.primary{background:var(--amber);color:var(--ink)}
.btn.primary:hover{background:#F3AC3C}
.btn.ghost{border-color:#ffffff66;color:#fff}
.btn.ghost:hover{border-color:#fff}
.btn.blue{background:var(--blue);color:#fff}
.btn.blue:hover{background:var(--blue-deep)}
.btn.outline{border-color:var(--blue);color:var(--blue)}
.btn.outline:hover{background:var(--sky)}

/* ---- funnel cards (the "what do you measure" grid) ---- */
.funnel{margin-top:-3.2rem;position:relative;z-index:2}
.cards{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(255px,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.3rem 1.3rem 1.15rem;
  text-decoration:none;color:var(--body);display:flex;flex-direction:column;gap:.45rem;
  transition:transform .15s,box-shadow .15s;box-shadow:0 1px 2px #0c223310}
.card:hover{transform:translateY(-3px);box-shadow:0 8px 22px #0c22331f;border-color:#B9CDDC}
.card .ic{height:120px;display:flex;align-items:center;justify-content:center}
.card h3{margin:0;font-size:1.08rem}
.card p{margin:0;font-size:.93rem;color:var(--muted);flex:1}
.card .go{font-family:var(--disp);font-weight:700;font-size:.88rem;color:var(--blue)}
.card:hover .go{color:var(--amber-deep)}

/* ---- generic sections ---- */
section.band{padding:4rem 0}
section.band.alt{background:var(--sky-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.split{display:grid;gap:2.5rem;grid-template-columns:1.05fr .95fr;align-items:center}
@media(max-width:840px){.split{grid-template-columns:1fr}}

/* ---- product cards on category pages ---- */
.prodgrid{display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.prod{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.prod .art{background:var(--sky-2);border-bottom:1px solid var(--line);padding:.6rem;display:flex;justify-content:center}
.prod .body{padding:1.05rem 1.2rem 1.2rem;display:flex;flex-direction:column;gap:.5rem;flex:1}
.prod h3{margin:0;font-size:1.05rem}
.prod .pn-row{display:flex;gap:.35rem;flex-wrap:wrap}
.prod p{margin:0;font-size:.92rem;color:var(--muted)}
.prod ul{margin:.2rem 0 0;padding-left:1.1rem;font-size:.9rem;color:var(--body)}
.prod ul li{margin:.15rem 0}
.prod .links{margin-top:auto;padding-top:.7rem;display:flex;gap:1rem;font-family:var(--disp);font-weight:700;font-size:.9rem}
.prod .links a{text-decoration:none}

/* ---- comparison table ---- */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.cmp{border-collapse:collapse;width:100%;font-size:.92rem;min-width:640px}
table.cmp th,table.cmp td{padding:.7rem .9rem;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
table.cmp thead th{background:var(--ink);color:#fff;font-family:var(--disp);font-weight:600;font-size:.85rem;letter-spacing:.03em}
table.cmp tbody tr:last-child td{border-bottom:0}
table.cmp tbody tr:hover{background:var(--sky-2)}
table.cmp td .pn{font-size:.85em}

/* ---- detail page: configuration states ---- */
.confgrid{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.conf{border-radius:var(--radius);border:1px solid var(--line);background:#fff;padding:1.2rem 1.3rem}
.conf h3{display:flex;align-items:center;gap:.5rem;font-size:1rem}
.conf .dot{width:12px;height:12px;border-radius:50%;flex:0 0 auto}
.conf.inc{border-top:4px solid var(--green)} .conf.inc .dot{background:var(--green)}
.conf.cho{border-top:4px solid var(--blue)} .conf.cho .dot{background:var(--blue)}
.conf.req{border-top:4px solid var(--amber)} .conf.req .dot{background:var(--amber)}
.conf ul{margin:.4rem 0 0;padding:0;list-style:none;font-size:.93rem}
.conf li{padding:.42rem 0;border-bottom:1px dashed var(--line);display:flex;justify-content:space-between;gap:.8rem;align-items:baseline}
.conf li:last-child{border-bottom:0}
.conf li .pn{flex:0 0 auto}
.callout{border:1px solid #ECCB8E;background:var(--amber-bg);border-radius:var(--radius);padding:1rem 1.2rem;font-size:.95rem}
.callout strong{color:var(--amber-deep)}

/* ---- spec tables on detail pages ---- */
.specgroups{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(310px,1fr))}
.spec{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.spec h3{background:var(--sky);margin:0;padding:.65rem 1rem;font-size:.92rem;letter-spacing:.04em}
.spec dl{margin:0;padding:.4rem 1rem .7rem;display:grid;grid-template-columns:1fr 1fr;font-size:.9rem}
.spec dt{color:var(--muted);padding:.4rem 0;border-bottom:1px dashed var(--line)}
.spec dd{margin:0;padding:.4rem 0;border-bottom:1px dashed var(--line);font-family:var(--mono);font-size:.84rem;color:var(--ink)}
.spec dt:last-of-type,.spec dd:last-of-type{border-bottom:0}

/* ---- FAQ ---- */
details.faq{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin:0 0 12px;overflow:hidden}
details.faq summary{cursor:pointer;list-style:none;padding:1rem 1.2rem;font-family:var(--disp);font-weight:700;color:var(--ink);
  display:flex;justify-content:space-between;gap:1rem;align-items:center}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";font-size:1.4rem;color:var(--blue);flex:0 0 auto;line-height:1}
details.faq[open] summary::after{content:"–"}
details.faq[open] summary{border-bottom:1px solid var(--line);background:var(--sky-2)}
details.faq .a{padding:1rem 1.2rem;font-size:.97rem}
details.faq .a p{margin:.3rem 0 .8rem}
details.faq .a p:last-child{margin-bottom:.2rem}

/* ---- CTA band & footer ---- */
.ctaband{background:var(--ink);color:#fff;text-align:center;padding:3.6rem 22px}
.ctaband h2{color:#fff}
.ctaband p{color:#C7D7E3;max-width:60ch;margin:0 auto 1.4rem}
footer.site{background:var(--blue-deep);color:#C7D7E3;font-size:.92rem}
footer.site .cols{display:grid;gap:2rem;grid-template-columns:2fr 1fr 1fr 1fr;padding:3rem 0 2rem}
@media(max-width:760px){footer.site .cols{grid-template-columns:1fr 1fr}}
footer.site h4{color:#fff;font-size:.85rem;letter-spacing:.1em;text-transform:uppercase}
footer.site a{color:#C7D7E3;text-decoration:none}
footer.site a:hover{color:#fff;text-decoration:underline}
footer.site ul{list-style:none;margin:0;padding:0}
footer.site li{margin:.35rem 0}
footer.site .legal{border-top:1px solid #ffffff22;padding:1rem 0 1.4rem;font-size:.83rem}

/* ---- selector tool ---- */
.selwrap{display:grid;gap:24px;grid-template-columns:1.15fr .85fr;align-items:start}
@media(max-width:900px){.selwrap{grid-template-columns:1fr}}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:14px;overflow:hidden}
.step .sh{padding:.9rem 1.2rem;display:flex;gap:.9rem;align-items:baseline;cursor:pointer;background:var(--sky-2)}
.step .snum{font-family:var(--mono);font-size:.74rem;color:var(--blue);font-weight:600;letter-spacing:.08em}
.step .stitle{font-family:var(--disp);font-weight:700;color:var(--ink)}
.step .ssub{margin-left:auto;font-size:.82rem;color:var(--green);font-weight:600}
.step .sbody{display:none;padding:1.1rem 1.2rem 1.3rem;border-top:1px solid var(--line)}
.step.active .sbody{display:block}
.step.hidden{display:none}
.opts{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));margin:.6rem 0}
.opt{border:1.5px solid var(--line);border-radius:8px;padding:.75rem .9rem;cursor:pointer;background:#fff}
.opt:hover{border-color:var(--blue)}
.opt.sel{border-color:var(--blue);background:var(--sky);box-shadow:inset 0 0 0 1px var(--blue)}
.opt .oname{font-family:var(--disp);font-weight:700;font-size:.93rem;color:var(--ink)}
.opt .odesc{font-size:.83rem;color:var(--muted);margin-top:.15rem}
.opt .omodel{font-family:var(--mono);font-size:.74rem;color:var(--blue-deep);margin-top:.3rem}
.hint{font-size:.9rem;color:var(--muted);margin:.2rem 0 .4rem}
.grouplabel{font-family:var(--disp);font-weight:700;font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:1rem 0 .2rem}
.navrow{display:flex;gap:.7rem;margin-top:1rem}
.navrow button{font-family:var(--disp);font-weight:700;font-size:.95rem;border-radius:8px;padding:.6rem 1.3rem;cursor:pointer;border:2px solid transparent}
.btn-next{background:var(--blue);color:#fff;border:0}
.btn-next:disabled{background:#A9BECD;cursor:not-allowed}
.btn-back{background:#fff;border-color:var(--line);color:var(--muted)}
.btn-finish{background:var(--amber);color:var(--ink);border:0}
.worksheet{background:#fff;border:1px solid var(--line);border-radius:var(--radius);position:sticky;top:84px;padding:1.2rem 1.3rem}
.worksheet h2{font-size:1.1rem}
.ws-empty{color:var(--muted);font-size:.92rem}
.line{display:flex;gap:.9rem;padding:.4rem 0;border-bottom:1px dashed var(--line);font-size:.9rem;align-items:baseline}
.line .m{font-family:var(--mono);font-size:.8rem;color:var(--blue-deep);flex:0 0 108px}
.line.head{border-bottom:2px solid var(--line)}
.line.head .m{font-family:var(--disp);font-weight:700;color:var(--ink);font-size:.85rem;flex:1;text-transform:uppercase;letter-spacing:.05em}
.line.tbd .m,.line.tbd .d{color:var(--amber-deep)}
.specbtns{display:flex;gap:.7rem;margin-top:1rem}
.specbtns button{flex:1;font-family:var(--disp);font-weight:700;border-radius:8px;padding:.65rem;border:0;cursor:pointer}
.btn-copy{background:var(--blue);color:#fff}
.btn-print{background:var(--sky);color:var(--ink)}
.specnote{font-size:.8rem;color:var(--muted);margin-top:.7rem}

/* misc */
.center{text-align:center}
.mt0{margin-top:0}.mb2{margin-bottom:2rem}
.notice{font-size:.85rem;color:var(--muted)}
@media print{header.site,footer.site,.ctaband,.navrow,.specbtns{display:none!important}}

/* Clickable model chips: keep chip styling, add affordance on hover */
.pn-row a,table.cmp a .pn{text-decoration:none}
.pn-row a .pn:hover,table.cmp a:hover .pn{background:var(--sky);border-color:var(--blue);text-decoration:none}
table.cmp a{text-decoration:none}
table.cmp a:hover{text-decoration:underline}

/* Hero chips: the page's own model reads as current/selected (white, blue border);
   cross-references to sibling products stay shaded and link out */
.pn.cur{background:#fff;border-color:var(--blue);font-weight:600}
a .pn.xref:hover{background:var(--sky-2);border-color:var(--blue)}