/* waterfiltersoftenercombo.com — global styles */
:root{
  --ink:#14333d;          /* deep water-line teal, body text */
  --teal:#167d8f;         /* links, brand */
  --teal-dark:#0e5665;
  --copper:#d96e30;       /* CTA — Arizona copper */
  --copper-dark:#b8551c;
  --paper:#fafaf7;        /* warm white page */
  --tint:#e9f3f5;         /* soft aqua panels */
  --line:#d8e2e4;
  --gold:#e9a13b;         /* rating stars */
  --max:760px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--ink);
  font:17px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;}
h1,h2,h3,.brand{font-family:"Bitter",Georgia,"Times New Roman",serif;line-height:1.25;color:var(--ink)}
h1{font-size:2rem;margin:.4em 0 .5em}
h2{font-size:1.5rem;margin:1.8em 0 .6em;padding-top:.4em;border-top:3px solid var(--tint)}
h3{font-size:1.15rem;margin:1.4em 0 .4em}
a{color:var(--teal)}
a:hover{color:var(--teal-dark)}
a:focus-visible,button:focus-visible{outline:3px solid var(--copper);outline-offset:2px}
img{max-width:100%;height:auto}

/* header / nav */
.site-head{background:rgba(255,255,255,.94);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.head-inner{max-width:1040px;margin:0 auto;padding:10px 20px;display:flex;align-items:center;gap:14px}
.brand{display:flex;align-items:center;gap:9px;text-decoration:none;font-weight:700;font-size:1rem;color:var(--ink);letter-spacing:-.01em;min-width:0}
.brand svg{flex:0 0 auto}
.brand span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand .tld{color:var(--teal);font-weight:400}
nav.main{margin-left:auto}
nav.main ul{list-style:none;display:flex;gap:2px;margin:0;padding:0}
nav.main a{display:block;padding:9px 13px;text-decoration:none;color:var(--ink);border-radius:8px;font-size:.92rem}
nav.main a:hover,nav.main a[aria-current="page"]{background:var(--tint);color:var(--teal-dark)}
@media(max-width:560px){
  .head-inner{padding:8px 14px;gap:8px}
  .brand{font-size:.88rem}
  .brand .tld{display:none}
  nav.main a{padding:9px 10px;font-size:.88rem}
}

/* layout */
main{max-width:var(--max);margin:0 auto;padding:28px 20px 64px}
.byline{display:flex;align-items:center;gap:12px;margin:6px 0 4px}
.byline img{width:52px;height:52px;border-radius:50%;border:2px solid var(--tint)}
.byline .who{font-size:.92rem;line-height:1.45}
.byline .who a{font-weight:600;text-decoration:none}
.byline .who .role{color:#5b7078}
.updated{font-size:.85rem;color:#5b7078;margin-bottom:14px}
.disclosure{background:var(--tint);border-left:4px solid var(--teal);padding:10px 14px;font-size:.86rem;border-radius:0 8px 8px 0;margin:14px 0 22px;color:#33525c}

/* signature verdict card */
.verdict{position:relative;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 24px 24px;margin:22px 0;box-shadow:0 2px 10px rgba(20,51,61,.06)}
.verdict::before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;
  background:linear-gradient(180deg,var(--teal) 0%,var(--teal) 55%,var(--copper) 55%,var(--copper) 100%)}
.verdict .kicker{font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--teal-dark);font-weight:700}
.verdict .score{font-family:"Bitter",Georgia,serif;font-size:2.4rem;font-weight:700;line-height:1}
.verdict .stars{color:var(--gold);font-size:1.1rem;letter-spacing:2px}
.verdict .row{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin:.4em 0}
@media(max-width:560px){.verdict{padding:18px 16px 20px}.verdict .score{font-size:2rem}}
.verdict ul{margin:.6em 0 .2em;padding-left:1.2em}
.verdict li{margin:.2em 0}

/* CTA */
.cta{display:inline-block;background:var(--copper);color:#fff !important;text-decoration:none;font-weight:700;font-size:1.02rem;
  padding:15px 30px;border-radius:12px;box-shadow:0 3px 0 var(--copper-dark),0 6px 16px rgba(217,110,48,.28);margin:8px 0;
  transition:transform .12s ease,box-shadow .12s ease;text-align:center}
.cta:hover{background:var(--copper-dark);color:#fff;transform:translateY(-1px);box-shadow:0 4px 0 var(--copper-dark),0 8px 20px rgba(217,110,48,.32)}
.cta:active{transform:translateY(1px);box-shadow:0 1px 0 var(--copper-dark)}
@media(prefers-reduced-motion:reduce){.cta{transition:none}.cta:hover,.cta:active{transform:none}}
.cta-sub{display:block;font-size:.8rem;color:#5b7078;margin-top:6px}
@media(max-width:560px){.cta{display:block;width:100%;box-sizing:border-box}}

/* trust strip */
.trust{display:flex;gap:8px 18px;flex-wrap:wrap;justify-content:center;margin:10px 0 0;padding:0;list-style:none;font-size:.82rem;color:#33525c}
.trust li::before{content:"✓ ";color:var(--teal);font-weight:700}

/* sticky mobile CTA bar */
.sticky-cta{position:fixed;left:0;right:0;bottom:0;z-index:60;background:rgba(255,255,255,.97);backdrop-filter:blur(6px);
  border-top:1px solid var(--line);padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  display:none;align-items:center;gap:12px;box-shadow:0 -4px 18px rgba(20,51,61,.12)}
.sticky-cta .mini{font-size:.8rem;line-height:1.35;min-width:0}
.sticky-cta .mini b{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sticky-cta .stars{color:var(--gold);letter-spacing:1px}
.sticky-cta .cta{margin:0;padding:12px 18px;font-size:.92rem;flex:0 0 auto;width:auto}
.sticky-cta.show{display:flex}
@media(min-width:900px){.sticky-cta.show{display:none}}

/* tables */
table{border-collapse:collapse;width:100%;margin:1em 0;font-size:.92rem;background:#fff}
th,td{border:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}
th{background:var(--tint);font-weight:700}
tr:nth-child(even) td{background:#f4f8f9}
.table-wrap{overflow-x:auto}

/* boxes */
.note{background:#fff;border:1px dashed var(--teal);border-radius:10px;padding:12px 16px;margin:1em 0;font-size:.95rem}
.proscons{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:1em 0}
.proscons div{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 16px}
.proscons h3{margin-top:0}
.proscons ul{padding-left:1.15em;margin:.4em 0}
@media(max-width:620px){.proscons{grid-template-columns:1fr}}

/* FAQ */
.faq h3{border-bottom:1px solid var(--line);padding-bottom:.3em}

/* footer */
.site-foot{background:var(--ink);color:#cfdde1;margin-top:48px}
.foot-inner{max-width:1040px;margin:0 auto;padding:36px 20px 28px;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;font-size:.88rem;line-height:1.65}
.site-foot h4{color:#fff;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;margin:0 0 .9em;opacity:.85}
.site-foot a{color:#9fc6cf;text-decoration:none}
.site-foot a:hover{color:#fff}
.site-foot ul{list-style:none;margin:0;padding:0}
.site-foot li{margin:.45em 0}
.site-foot address{font-style:normal;line-height:1.75}
.site-foot .foot-brand{display:flex;align-items:center;gap:8px;color:#fff;font-family:"Bitter",Georgia,serif;font-weight:700;margin-bottom:10px}
.site-foot p{margin:.4em 0;color:#a8bfc6}
.foot-legal{border-top:1px solid #24454f;font-size:.74rem;color:#7d99a1;padding:16px 20px calc(16px + env(safe-area-inset-bottom));text-align:center}
.foot-legal p{max-width:820px;margin:.45em auto;line-height:1.55}
.foot-legal a{color:#9fc6cf}
@media(max-width:720px){
  .foot-inner{grid-template-columns:1fr;gap:24px;padding:28px 18px 20px;text-align:left}
  .site-foot li{margin:.6em 0}
  .site-foot li a{display:inline-block;padding:2px 0}
}

/* compact disclosure + toc */
.disclosure-line{font-size:.8rem;color:#5b7078;border-bottom:1px solid var(--line);padding-bottom:8px;margin:10px 0 18px}
.toc{background:var(--tint);border-radius:10px;padding:12px 16px;font-size:.9rem;line-height:2;margin:18px 0}
.toc a{text-decoration:none;white-space:nowrap}

/* interactive tools */
.tool{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 22px;margin:22px 0;box-shadow:0 2px 10px rgba(20,51,61,.06)}
.tool .kicker{font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--teal-dark);font-weight:700;display:block;margin-bottom:6px}
.tool h3{margin-top:0}
.tool label{display:block;font-weight:600;font-size:.92rem;margin:12px 0 4px}
.tool select,.tool input[type=number]{width:100%;max-width:220px;padding:9px 10px;border:1px solid var(--line);border-radius:8px;font-size:1rem;background:#fff}
.tool input[type=range]{width:100%;max-width:420px;accent-color:var(--teal)}
.tool output{font-weight:700;color:var(--teal-dark)}
.tool .result{background:var(--tint);border-radius:10px;padding:14px 16px;margin-top:14px}
.tool .result .big{font-family:"Bitter",Georgia,serif;font-size:1.5rem;font-weight:700;display:block}
.tool .fineprint{font-size:.78rem;color:#5b7078;margin-top:10px;margin-bottom:0}