:root{
  --ink:#0d2433;--ink-2:#163a50;--pool:#0a7383;--pool-dark:#065462;--sun:#ffb31a;--sun-dark:#e69a00;
  --stucco:#edf2f4;--paper:#fff;--line:#cddbe1;--muted:#4a6272;--soft:#e3ecef;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,serif;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--sans);font-size:17px;line-height:1.65;color:var(--ink);background:var(--stucco)}
img,svg{max-width:100%;height:auto}
a{color:var(--pool-dark);text-underline-offset:.15em}
a:hover{color:var(--ink)}
h1,h2,h3,h4{font-family:var(--serif);line-height:1.2;letter-spacing:-.01em;margin:0 0 .5em;color:var(--ink)}
h1{font-size:clamp(2rem,4.6vw,3.15rem)}
h2{font-size:clamp(1.55rem,3vw,2.1rem)}
h3{font-size:1.25rem}
p{margin:0 0 1.1em}
:focus-visible{outline:3px solid var(--sun);outline-offset:3px;border-radius:3px}
.skip{position:absolute;left:-999px;top:0;background:var(--sun);color:var(--ink);padding:10px 16px;z-index:100}
.skip:focus{left:0}
.wrap{width:100%;max-width:1160px;margin:0 auto;padding:0 20px}

/* header */
.site-header{background:var(--paper);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.nav-row{display:flex;align-items:center;gap:18px;min-height:70px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:var(--serif);font-weight:700;font-size:1.12rem;line-height:1.1;flex:0 0 auto}
.brand svg{width:38px;height:38px;flex:0 0 auto}
.brand small{display:block;font-family:var(--sans);font-weight:500;font-size:.72rem;color:var(--muted);letter-spacing:.01em;margin-top:2px}
.primary-nav{margin-left:auto}
.primary-nav ul{display:flex;gap:2px;list-style:none;margin:0;padding:0;align-items:center}
.primary-nav a,.primary-nav button.sub-toggle{display:block;padding:.6em .8em;color:var(--ink);text-decoration:none;font-weight:600;font-size:.95rem;background:none;border:0;cursor:pointer;font-family:inherit;border-radius:6px}
.primary-nav a:hover,.primary-nav button.sub-toggle:hover{background:var(--stucco)}
.primary-nav a[aria-current="page"]{color:var(--pool-dark);box-shadow:inset 0 -3px 0 var(--pool)}
.has-sub{position:relative}
.primary-nav .sub{display:none;flex-direction:column;align-items:stretch;text-align:left;gap:0;position:absolute;left:0;top:100%;min-width:340px;background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:8px;box-shadow:0 12px 30px rgba(13,36,51,.16)}
.primary-nav .sub a{font-weight:500;padding:.45em .7em}
.primary-nav .has-sub:hover .sub,.primary-nav .has-sub:focus-within .sub,.primary-nav .has-sub.open .sub{display:flex}
.nav-cta{margin-left:6px}
.primary-nav a.btn-sun{background:var(--sun);color:var(--ink);padding:.55em 1em}
.primary-nav a.btn-sun:hover{background:var(--sun-dark)}
.menu-btn{display:none;margin-left:auto;background:none;border:2px solid var(--ink);border-radius:8px;padding:.45em .8em;font-weight:700;font-family:inherit;color:var(--ink);cursor:pointer}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;padding:.8em 1.25em;border-radius:8px;font-weight:700;text-decoration:none;border:2px solid transparent;font-size:1rem;font-family:inherit;cursor:pointer;line-height:1.2}
.btn-sun{background:var(--sun);color:var(--ink)}
.btn-sun:hover{background:var(--sun-dark);color:var(--ink)}
.btn-ghost{border-color:rgba(255,255,255,.7);color:#fff}
.btn-ghost:hover{background:#fff;color:var(--ink)}
.btn-pool{background:var(--pool);color:#fff}
.btn-pool:hover{background:var(--pool-dark);color:#fff}
.btn-sm{padding:.55em 1em;font-size:.95rem}

/* hero */
.hero{background:var(--ink);color:#e9f1f4;position:relative;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:40px;align-items:center;padding-top:64px;padding-bottom:64px}
.hero h1{color:#fff;max-width:22ch}
.hero .lead{font-size:1.15rem;max-width:56ch;color:#d3e2e8}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 22px}
.trust{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px 22px;font-size:.95rem;color:#c3d6de}
.trust li::before{content:"\2713";color:var(--sun);font-weight:700;margin-right:.45em}
.hero-fan{display:flex;justify-content:center}
.hero-fan svg{width:min(430px,86vw);height:auto}
.fan-spin{transform-origin:50% 50%;animation:spin 48s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.hero-thermo{margin-top:26px;border-left:3px solid var(--sun);padding-left:14px;color:#c3d6de;font-size:.98rem;max-width:52ch}

.page-hero{background:var(--ink) url("data:image/svg+xml,%3Csvg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 400 400%22 fill=%22none%22 stroke=%22%23ffffff%22 stroke-opacity=%22.09%22 stroke-width=%223%22%3E%3Cg transform=%22rotate%280 200 200%29%22%3E%3Cpath d=%22M186 152C172 112 170 70 184 34C192 12 224 12 230 36C238 76 228 118 214 152Z%22/%3E%3C/g%3E%3Cg transform=%22rotate%2872 200 200%29%22%3E%3Cpath d=%22M186 152C172 112 170 70 184 34C192 12 224 12 230 36C238 76 228 118 214 152Z%22/%3E%3C/g%3E%3Cg transform=%22rotate%28144 200 200%29%22%3E%3Cpath d=%22M186 152C172 112 170 70 184 34C192 12 224 12 230 36C238 76 228 118 214 152Z%22/%3E%3C/g%3E%3Cg transform=%22rotate%28216 200 200%29%22%3E%3Cpath d=%22M186 152C172 112 170 70 184 34C192 12 224 12 230 36C238 76 228 118 214 152Z%22/%3E%3C/g%3E%3Cg transform=%22rotate%28288 200 200%29%22%3E%3Cpath d=%22M186 152C172 112 170 70 184 34C192 12 224 12 230 36C238 76 228 118 214 152Z%22/%3E%3C/g%3E%3Ccircle cx=%22200%22 cy=%22200%22 r=%2234%22/%3E%3Ccircle cx=%22200%22 cy=%22200%22 r=%22190%22 stroke-width=%221.5%22/%3E%3C/svg%3E") no-repeat right max(4vw,calc(50% - 560px)) center/300px;color:#e9f1f4;padding:44px 0 40px}
.page-hero h1{color:#fff;max-width:26ch;margin-bottom:.4em}
.page-hero .lead{max-width:68ch;color:#d3e2e8;font-size:1.08rem}
.page-hero .lead p:last-child{margin-bottom:0}
.page-hero a{color:#ffd57a}
.crumbs{font-size:.88rem;margin-bottom:16px}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:4px 8px;margin:0;padding:0;color:#a9c0ca}
.crumbs li+li::before{content:"/";margin-right:8px;color:#6f8f9e}
.crumbs a{color:#cfe0e7;text-decoration:none}
.crumbs a:hover{text-decoration:underline}
.page-meta{font-size:.9rem;color:#a9c0ca;margin-top:12px}

/* sections */
.section{padding:64px 0}
.section.alt{background:var(--paper)}
.section.soft{background:var(--soft)}
.section-head{max-width:70ch;margin-bottom:28px}
.section-head p{color:var(--muted);font-size:1.05rem}

/* service rows */
.rows{list-style:none;margin:0;padding:0;border-bottom:1px solid var(--line)}
.rows li{display:grid;grid-template-columns:minmax(220px,.9fr) 2fr;gap:8px 32px;padding:18px 0;border-top:1px solid var(--line);align-items:baseline}
.rows a.name{font-family:var(--serif);font-weight:700;font-size:1.2rem;color:var(--ink);text-decoration:none;border-bottom:2px solid transparent;justify-self:start}
.rows a.name:hover{border-bottom-color:var(--sun)}
.rows p{margin:0;color:var(--muted)}

/* article layout */
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:52px;align-items:start}
.prose{max-width:74ch}
.prose h2{margin-top:2.2em;padding-top:.2em}
.prose>section:first-child h2,.prose>h2:first-child{margin-top:0}
.prose h3{margin-top:1.6em}
.prose ul,.prose ol{padding-left:1.3em;margin:0 0 1.2em}
.prose li{margin-bottom:.5em}
.prose li::marker{color:var(--pool)}
.prose table,.tbl{display:block;overflow-x:auto;border-collapse:collapse;width:100%;margin:1.2em 0 1.6em;font-size:.97rem}
.prose table thead,.prose table tbody{display:table;width:100%}
.prose th,.prose td{padding:.7em .9em;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.prose th{background:var(--ink);color:#fff;font-weight:600}
.prose tbody tr:nth-child(even){background:var(--paper)}
ol.steps{list-style:none;padding:0;counter-reset:step;margin:0 0 1.4em}
ol.steps li{counter-increment:step;position:relative;padding:0 0 1.05em 3.1em;margin:0;border-left:0}
ol.steps li::before{content:counter(step);position:absolute;left:0;top:0;width:2.15em;height:2.15em;border-radius:50%;background:var(--ink);color:#fff;font-weight:700;display:grid;place-items:center;font-size:.95rem}
ol.steps li::after{content:"";position:absolute;left:1.07em;top:2.3em;bottom:.15em;width:2px;background:var(--line)}
ol.steps li:last-child::after{display:none}
.toc{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:16px 20px;margin:0 0 2em;max-width:74ch}
.toc strong{font-family:var(--serif);font-size:1.05rem}
.toc ul{list-style:none;margin:.5em 0 0;padding:0;columns:2;column-gap:28px}
.toc li{margin:0 0 .3em;break-inside:avoid;font-size:.95rem}
.diagram{margin:1.4em 0;background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:14px}
.diagram figcaption{font-size:.9rem;color:var(--muted);margin-top:8px}

.aside{position:sticky;top:90px;display:grid;gap:18px}
.aside-card{background:var(--ink);color:#e9f1f4;border-radius:12px;padding:24px}
.aside-card h2{font-size:1.35rem;color:#fff;margin-bottom:.3em}
.aside-card p{font-size:.97rem;color:#c3d6de}
.aside-card .btn{width:100%;margin-top:6px}
.aside-card address{font-style:normal;font-size:.95rem;color:#c3d6de;margin-top:14px}
.aside-list{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:20px 22px}
.aside-list h2{font-size:1.1rem}
.aside-list ul{list-style:none;margin:0;padding:0}
.aside-list li{border-top:1px solid var(--line);padding:.45em 0;font-size:.95rem}
.aside-list li:first-child{border-top:0}

/* FAQ */
.faq details{border-bottom:1px solid var(--line);padding:2px 0}
.faq summary{cursor:pointer;font-weight:700;padding:14px 32px 14px 0;list-style:none;position:relative;font-size:1.05rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:10px;font-size:1.5rem;font-weight:400;color:var(--pool)}
.faq details[open] summary::after{content:"\2212"}
.faq .ans{padding:0 0 14px;max-width:70ch}
.faq .ans p:last-child{margin-bottom:0}

/* chips + cards */
.chips{display:flex;flex-wrap:wrap;gap:10px;list-style:none;margin:0;padding:0}
.chips a{display:inline-block;padding:.4em 1em;border:1px solid var(--line);border-radius:999px;background:var(--paper);text-decoration:none;font-weight:600;font-size:.95rem;color:var(--ink)}
.chips a:hover{border-color:var(--pool);color:var(--pool-dark)}
.alt .chips a{background:var(--stucco)}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}
.card{background:var(--paper);border:1px solid var(--line);border-top:4px solid var(--pool);border-radius:6px;padding:20px 22px}
.card h3{font-size:1.15rem;margin-bottom:.4em}
.card h3 a{color:var(--ink);text-decoration:none}
.card h3 a:hover{text-decoration:underline}
.card p{font-size:.96rem;color:var(--muted);margin-bottom:.6em}
.card .meta{font-size:.85rem;color:var(--muted);margin:0}
.alt .card{background:var(--stucco)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.three h3{margin-top:0}

/* CTA band */
.cta-band{background:var(--pool-dark);color:#e6f3f5;padding:56px 0}
.cta-band .wrap{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.cta-band h2{color:#fff}
.cta-band a:not(.btn){color:#ffd57a}
.cta-band p{color:#d5eaee}
.cta-phone{font-family:var(--serif);font-size:2rem;font-weight:700;color:#fff;text-decoration:none;display:inline-block;margin:.1em 0 .3em}
.cta-phone:hover{color:var(--sun)}

/* forms */
.form-card{background:var(--paper);color:var(--ink);border-radius:12px;padding:24px}
.form-card h2,.form-card h3{margin-bottom:.6em;color:var(--ink)}
.cta-band .form-card h2{color:var(--ink)}
.cta-band .form-card p{color:var(--muted)}
.field{margin-bottom:14px}
.field label{display:block;font-weight:600;margin-bottom:4px;font-size:.95rem}
.field input,.field select,.field textarea{width:100%;padding:.7em .8em;border:1.5px solid #9fb4bf;border-radius:8px;font:inherit;background:#fff;color:var(--ink)}
.field textarea{min-height:100px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:3px solid var(--sun);border-color:var(--ink)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.hp{position:absolute;left:-9999px;height:0;overflow:hidden}
.form-note{font-size:.88rem;color:var(--muted);margin:10px 0 0}
.form-msg{margin-top:12px;padding:12px 14px;border-radius:8px;display:none;font-weight:600}
.form-msg.ok{display:block;background:#e2f5ea;color:#0f5a2c}
.form-msg.err{display:block;background:#fdeaea;color:#8a1c1c}

.nap{font-style:normal;line-height:1.7}
.map{border:0;width:100%;height:340px;border-radius:12px;background:var(--soft)}

/* footer */
.site-footer{background:var(--ink);color:#b9ccd5;padding:56px 0 24px;font-size:.95rem}
.site-footer a{color:#dbe8ee;text-decoration:none}
.site-footer a:hover{color:var(--sun);text-decoration:underline}
.foot-grid{display:grid;grid-template-columns:1.3fr 1.2fr 1.2fr 1fr;gap:34px}
.site-footer h2{font-family:var(--sans);font-size:.95rem;color:#fff;margin-bottom:.8em;letter-spacing:.02em}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin-bottom:.35em}
.foot-brand p{max-width:34ch}
.foot-bottom{border-top:1px solid #244a60;margin-top:36px;padding-top:18px;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;font-size:.88rem}
.callbar{display:none}

@media (max-width:1020px){
  .article-grid{grid-template-columns:1fr}
  .aside{position:static}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .menu-btn{display:block}
  .primary-nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 20px 18px;max-height:calc(100vh - 70px);overflow:auto}
  .primary-nav.open{display:block}
  .primary-nav ul{flex-direction:column;align-items:stretch}
  .primary-nav .sub{position:static;display:none;box-shadow:none;border:0;padding:0 0 0 12px;min-width:0}
  .primary-nav .has-sub:hover .sub,.primary-nav .has-sub:focus-within .sub{display:none}
  .primary-nav .has-sub.open .sub,.primary-nav .has-sub.open:focus-within .sub{display:flex}
  .nav-cta{margin:8px 0 0}
  .nav-cta .btn{width:100%}
  .hero .wrap{grid-template-columns:1fr;padding-top:44px;padding-bottom:44px}
  .hero-fan{order:2}
  .hero-fan svg{width:min(220px,58vw)}
  .rows li{grid-template-columns:1fr}
  .split,.three,.cta-band .wrap{grid-template-columns:1fr}
  .section{padding:48px 0}
}
@media (max-width:900px){.page-hero{background-image:none}}
@media (max-width:640px){
  body{font-size:16.5px;padding-bottom:64px}
  .toc ul{columns:1}
  .row2{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .brand small{display:none}
  .callbar{display:grid;grid-template-columns:1fr 1fr;position:fixed;left:0;right:0;bottom:0;z-index:60;background:var(--ink);padding:8px;gap:8px;padding-bottom:calc(8px + env(safe-area-inset-bottom,0px))}
  .callbar .btn{padding:.7em .5em}
}
@media (prefers-reduced-motion:reduce){
  .fan-spin{animation:none}
  html{scroll-behavior:auto}
}