/* WaterSoftenerPrices.com — accessible, fast, no framework */
:root{
  --bg:#ffffff; --bg-soft:#f3f8fb; --bg-tint:#e6f2f8;
  --ink:#0f2433; --ink-2:#3b5363; --line:#d3e2ea;
  --brand:#0a5f8a; --brand-ink:#ffffff; --brand-dark:#07405e;
  --accent:#0d7a5f; --warn:#8a4b00; --warn-bg:#fff4e0;
  --focus:#b3005e;
  --radius:14px; --shadow:0 6px 24px rgba(15,36,51,.08);
  --max:1120px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font:1.0625rem/1.65 var(--font)}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-underline-offset:3px}
a:hover{color:var(--brand-dark)}
:focus-visible{outline:3px solid var(--focus);outline-offset:3px;border-radius:4px}
h1,h2,h3{line-height:1.2;color:var(--ink);margin:0 0 .6em}
h1{font-size:clamp(2rem,4.5vw,3.1rem);letter-spacing:-.02em}
h2{font-size:clamp(1.5rem,3vw,2.05rem);letter-spacing:-.01em}
h3{font-size:1.2rem}
p{margin:0 0 1em}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:12px;top:-60px;background:var(--ink);color:#fff;padding:12px 16px;border-radius:8px;z-index:100;font-weight:700}
.skip:focus{top:12px;color:#fff}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}

/* Header */
.site-header{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:50}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);text-decoration:none;font-size:1.08rem}
.logo span b{color:var(--brand)}
.nav ul{list-style:none;display:flex;gap:4px;margin:0;padding:0;align-items:center}
.nav a.navlink{display:inline-block;padding:10px 12px;border-radius:8px;color:var(--ink);text-decoration:none;font-weight:600;font-size:.98rem}
.nav a.navlink:hover,.nav a[aria-current=page]{background:var(--bg-tint);color:var(--brand-dark)}
.menu-btn{display:none;background:none;border:2px solid var(--line);border-radius:10px;padding:8px 12px;font:inherit;font-weight:700;color:var(--ink);min-height:44px;cursor:pointer}
@media (max-width:860px){
  .menu-btn{display:inline-flex;align-items:center;gap:8px}
  .nav ul{display:none;position:absolute;left:0;right:0;top:68px;background:#fff;flex-direction:column;align-items:stretch;padding:8px 20px 16px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  .nav ul.open{display:flex}
  .nav a.navlink{padding:14px 12px}
}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:12px 22px;border-radius:999px;border:2px solid var(--brand);background:var(--brand);color:var(--brand-ink);font:inherit;font-weight:700;text-decoration:none;cursor:pointer}
.btn:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff}
.btn.ghost{background:#fff;color:var(--brand)}
.btn.ghost:hover{background:var(--bg-tint);color:var(--brand-dark)}
.btn.green{background:var(--accent);border-color:var(--accent)}
.btn.green:hover{background:#095e49;border-color:#095e49}

/* Hero */
.hero{background:linear-gradient(180deg,var(--bg-tint),#fff 80%);padding:56px 0 40px}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
@media (max-width:860px){.hero-grid{grid-template-columns:1fr}.hero{padding:36px 0 24px}}
.eyebrow{display:inline-block;font-weight:700;font-size:.88rem;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);margin-bottom:10px}
.lead{font-size:1.2rem;color:var(--ink-2);max-width:40ch}
.zipbox{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-top:22px;max-width:520px}
.zipbox form{display:flex;gap:10px;flex-wrap:wrap}
.zipbox label{display:block;font-weight:700;margin-bottom:8px}
.zipbox input{flex:1 1 160px}
.zip-result{margin-top:14px}
.zip-result:empty{display:none}

/* Forms */
input,select,textarea{font:inherit;color:var(--ink);background:#fff;border:2px solid #7d93a1;border-radius:10px;padding:11px 14px;min-height:48px;width:100%}
input:focus,select:focus,textarea:focus{border-color:var(--brand)}
.field{margin-bottom:18px}
.field label,.field legend{display:block;font-weight:700;margin-bottom:6px}
.hint{display:block;font-size:.93rem;color:var(--ink-2);margin-bottom:6px}
.error{color:#a3001b;font-weight:600;font-size:.95rem;margin-top:6px}
.error:empty{display:none}
[aria-invalid=true]{border-color:#a3001b}
fieldset{border:0;padding:0;margin:0 0 18px}
.choices{display:grid;gap:10px}
.choice{display:flex;gap:12px;align-items:flex-start;border:2px solid var(--line);border-radius:12px;padding:12px 14px;cursor:pointer}
.choice input{width:22px;height:22px;min-height:0;margin-top:2px;flex:0 0 auto;accent-color:var(--brand)}
.choice:has(input:checked){border-color:var(--brand);background:var(--bg-tint)}
.consent{font-size:.9rem;color:var(--ink-2)}
.check{display:flex;gap:12px;align-items:flex-start}
.check input{width:22px;height:22px;min-height:0;margin-top:3px;flex:0 0 auto;accent-color:var(--brand)}

/* Sections & cards */
section{padding:56px 0}
.soft{background:var(--bg-soft)}
.grid{display:grid;gap:20px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
@media (max-width:860px){.g3,.g2{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.card h3{margin-bottom:.4em}
.step-num{display:inline-flex;width:40px;height:40px;border-radius:50%;background:var(--brand);color:#fff;font-weight:800;align-items:center;justify-content:center;margin-bottom:12px}
.price{font-size:1.6rem;font-weight:800;color:var(--brand-dark)}
.city-list{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}
.city-list a{display:block;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:#fff;text-decoration:none;font-weight:700}
.city-list a:hover{border-color:var(--brand);background:var(--bg-tint)}
.city-list small{display:block;font-weight:500;color:var(--ink-2)}

/* Tables */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px;margin:0 0 1.2em}
table{border-collapse:collapse;width:100%;min-width:520px;background:#fff}
caption{text-align:left;font-weight:700;padding:12px 14px;color:var(--ink)}
th,td{text-align:left;padding:12px 14px;border-top:1px solid var(--line);vertical-align:top}
thead th{background:var(--bg-soft);border-top:0}

/* Callouts */
.note{border-left:5px solid var(--brand);background:var(--bg-soft);padding:16px 18px;border-radius:0 12px 12px 0;margin:0 0 1.2em}
.note.warn{border-color:var(--warn);background:var(--warn-bg)}
.badge{display:inline-block;padding:4px 10px;border-radius:999px;font-size:.85rem;font-weight:700;background:var(--bg-tint);color:var(--brand-dark)}
.hard-meter{margin:10px 0 6px}
.hard-meter .bar{height:14px;border-radius:999px;background:linear-gradient(90deg,#9fd8c8,#ffd27a,#f2994a,#d64545);position:relative}
.hard-meter .pin{position:absolute;top:-6px;width:4px;height:26px;background:var(--ink);border-radius:2px}
.hard-meter .scale{display:flex;justify-content:space-between;font-size:.82rem;color:var(--ink-2);margin-top:6px}

/* Article */
.article{max-width:760px}
.article h2{margin-top:1.6em}
.article ul,.article ol{padding-left:1.3em}
.article li{margin-bottom:.4em}
.crumbs{font-size:.93rem;margin-top:20px}
.crumbs ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li+li::before{content:"›";margin-right:6px;color:var(--ink-2)}
.page-head{padding-top:24px;padding-bottom:8px}
.updated{color:var(--ink-2);font-size:.93rem}
.two-col{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:40px;align-items:start}
@media (max-width:960px){.two-col{grid-template-columns:1fr}}
.sticky{position:sticky;top:90px}

/* Calculator */
.calc{display:grid;grid-template-columns:1fr 1fr;gap:28px}
@media (max-width:860px){.calc{grid-template-columns:1fr}}
.result{align-self:start;background:var(--ink);color:#fff;border-radius:var(--radius);padding:26px}
.result h2,.result h3{color:#fff}
.result .big{font-size:2.2rem;font-weight:800;line-height:1.1}
.result dl{display:grid;grid-template-columns:1fr auto;gap:10px 16px;margin:18px 0}
.result dt{color:#cfe1ec}
.result dd{margin:0;font-weight:700;text-align:right}
.result a{color:#9fe0ff}
.result .btn{background:#fff;color:var(--ink);border-color:#fff}
.result .btn:hover{background:var(--bg-tint)}

/* FAQ */
details{border:1px solid var(--line);border-radius:12px;background:#fff;margin-bottom:10px}
summary{cursor:pointer;padding:16px 18px;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:12px;min-height:48px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-size:1.4rem;line-height:1;color:var(--brand)}
details[open] summary::after{content:"–"}
details>div{padding:0 18px 16px}

/* CTA band */
.cta{background:var(--brand-dark);color:#fff;border-radius:20px;padding:36px;display:flex;gap:24px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.cta h2{color:#fff;margin:0 0 .3em}
.cta p{margin:0;color:#d7e9f3}
.cta .btn{background:#fff;color:var(--brand-dark);border-color:#fff}

/* Footer */
.site-footer{background:var(--ink);color:#d3e1ea;padding:48px 0 28px;margin-top:40px;font-size:.96rem}
.site-footer a{color:#fff}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}
@media (max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
.site-footer h2{font-size:1rem;color:#fff;margin-bottom:10px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:8px}
.fine{border-top:1px solid #2c4556;margin-top:28px;padding-top:18px;font-size:.88rem;color:#a9bfcd}
.success{border:2px solid var(--accent);background:#e8f6f1;border-radius:12px;padding:18px}

.icon{display:inline-flex;width:52px;height:52px;border-radius:14px;align-items:center;justify-content:center;background:var(--bg-tint);color:var(--brand);margin-bottom:14px}
.card{transition:transform .15s ease,box-shadow .15s ease}
.grid .card:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(15,36,51,.12)}
.hero img{filter:drop-shadow(0 18px 30px rgba(10,95,138,.14))}