:root{--bg:#eef1f8;--navy:#14213d;--ink:#17233b;--mut:#51607a;--oc:#e09f3e;--sky:#3b82f6;--sl:#7c8db5;--glass:rgba(255,255,255,.66);--bd:rgba(20,33,61,.14);--r:20px;--sh:0 12px 40px rgba(20,33,61,.12);--sw:250px}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:24px}
body{font-family:"Gill Sans","Trebuchet MS","Segoe UI",system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.7;overflow-x:hidden;animation:pg .6s ease}
@keyframes pg{from{opacity:0}to{opacity:1}}
h1,h2,h3,h4{font-family:"Cambria","Hoefler Text",Georgia,serif;line-height:1.2}
a{color:#1d4ed8}
.bg{position:fixed;inset:0;z-index:-1;background:linear-gradient(170deg,#eef1f8,#e3e9f6)}
.blob{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5}
.b1{width:420px;height:420px;background:#93c5fd;top:-100px;right:-60px}
.b2{width:360px;height:360px;background:#fcd9a0;top:50%;left:20%}
.b3{width:300px;height:300px;background:#c7d2fe;bottom:-60px;right:10%}
.glass{background:var(--glass);border:1px solid var(--bd);border-radius:var(--r);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--sh)}
.btn{display:inline-block;padding:.85rem 1.5rem;border-radius:12px;font-weight:700;text-decoration:none;cursor:pointer;border:1px solid transparent;font-size:1rem;text-align:center;transition:transform .25s,box-shadow .25s}
.glow{background:linear-gradient(120deg,var(--oc),#f4c06a,var(--oc));background-size:200% 100%;color:#241503;animation:sh 5s linear infinite}
.glow:hover{transform:translateY(-3px);box-shadow:0 0 28px rgba(224,159,62,.65)}
@keyframes sh{to{background-position:200% 0}}
.ghost{background:#fff;border-color:var(--bd);color:var(--navy)}
.ghost:hover{transform:translateY(-3px);border-color:var(--navy)}
:focus-visible{outline:3px solid var(--sky);outline-offset:3px}

/* sidebar nav */
.side{position:fixed;top:0;left:0;bottom:0;width:var(--sw);z-index:50;display:flex;flex-direction:column;gap:2rem;padding:1.6rem 1.2rem;background:rgba(20,33,61,.9);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-right:1px solid rgba(255,255,255,.1);transition:box-shadow .3s}
.side.scrolled{box-shadow:8px 0 40px rgba(20,33,61,.35)}
.logo{display:flex;align-items:center;gap:.7rem;color:#fff;text-decoration:none;font-weight:700;font-family:Cambria,Georgia,serif;line-height:1.15}
.mark{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--oc),var(--sky));color:#fff;flex:none}
.menu{display:flex;flex-direction:column;gap:.2rem}
.menu a:not(.btn){color:#c3cde4;text-decoration:none;font-weight:600;padding:.6rem .8rem;border-radius:10px;border-left:3px solid transparent;transition:.25s}
.menu a:not(.btn):hover,.menu a.on{background:rgba(255,255,255,.08);color:#fff;border-left-color:var(--oc)}
.menu .btn{margin-top:1.2rem}
.burger{display:none;background:none;border:0;cursor:pointer;width:42px;height:42px;margin-left:auto}
.burger span{display:block;height:2px;background:#fff;margin:7px 9px;transition:.3s}
main{margin-left:var(--sw)}
.hero,.sec,.footer{width:min(1100px,92%);margin-left:auto;margin-right:auto}

/* hero */
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:2.5rem;align-items:center;min-height:100vh;padding:4rem 0 3rem;position:relative}
.badge{display:inline-flex;align-items:center;gap:.5rem;padding:.35rem .9rem;border:1px solid var(--bd);border-radius:999px;background:#fff;font-size:.9rem;color:var(--mut)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--oc);animation:pulse 1.6s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(224,159,62,.6)}100%{box-shadow:0 0 0 9px rgba(224,159,62,0)}}
h1{font-size:clamp(2rem,4.4vw,3.5rem);margin:1.1rem 0;color:var(--navy)}
.intro{color:var(--mut);font-size:1.1rem;max-width:58ch}
.cta-row{display:flex;gap:.9rem;flex-wrap:wrap;margin:1.7rem 0}
.trust{list-style:none;display:flex;flex-wrap:wrap;gap:.4rem 1.3rem;color:var(--mut);font-size:.93rem}
.hero-r{position:relative;display:grid;gap:1rem}
.tank{padding:1.5rem;background:linear-gradient(160deg,rgba(255,255,255,.85),rgba(147,197,253,.3))}
.tank h3{font-size:1.25rem}
.g-sub{color:var(--mut);margin:.2rem 0 .9rem}
.cut{position:relative;height:110px;border:3px solid var(--navy);border-radius:10px 10px 18px 18px;background:#fff;overflow:hidden;margin-bottom:1rem}
.scum{position:absolute;top:10px;left:0;right:0;height:10px;background:#d6c7a1}
.water{position:absolute;top:20px;bottom:0;left:0;right:0;background:linear-gradient(#93c5fd,#60a5fa);opacity:.75}
.sludge{position:absolute;bottom:0;left:0;right:0;height:20%;background:#7a5c3a;transition:height .5s}
input[type=range]{width:100%;accent-color:var(--oc)}
.g-read{display:flex;align-items:center;justify-content:space-between;margin:.8rem 0 .5rem}
.g-read strong{font-size:2.2rem;font-family:Cambria,Georgia,serif}
.tag{padding:.3rem .9rem;border-radius:999px;font-weight:700;font-size:.9rem}
.ok{background:#d1fae5;color:#065f46}.mid{background:#fef3c7;color:#92400e}.hi{background:#fee2e2;color:#991b1b}
.tank small{color:var(--mut)}
.row2{display:grid;grid-template-columns:repeat(3,1fr);gap:.8rem}
.stat{padding:1rem;text-align:center}
.stat strong{display:block;font-size:2.2rem;font-family:Cambria,Georgia,serif;color:var(--oc)}
.stat span{color:var(--mut);font-size:.9rem}
.shape{position:absolute;border:2px solid rgba(59,130,246,.35);border-radius:30%;animation:spin 22s linear infinite;pointer-events:none}
.s1{width:80px;height:80px;top:-34px;right:4%}
.s2{width:50px;height:50px;bottom:-26px;left:10%;border-color:rgba(224,159,62,.5);animation-duration:14s}
@keyframes spin{to{rotate:360deg}}
.tilt{transition:transform .2s ease-out;transform-style:preserve-3d;will-change:transform}

.sec{padding:4.2rem 0}
.sec-title{font-size:clamp(1.7rem,3.2vw,2.4rem);color:var(--navy)}
.sec-sub{color:var(--mut);margin:.5rem 0 2rem}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.3rem}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}

/* service rows */
.rows{display:grid;gap:1rem}
.row{display:grid;grid-template-columns:64px 1fr auto;gap:1.3rem;align-items:center;padding:1.3rem 1.6rem;transition:box-shadow .3s,border-color .3s}
.row:hover{border-color:var(--oc);box-shadow:0 20px 50px rgba(224,159,62,.22)}
.ico{font-size:1.8rem;width:60px;height:60px;display:grid;place-items:center;border-radius:16px;background:rgba(224,159,62,.16)}
.row h3{font-size:1.2rem;margin-bottom:.2rem}
.row p{color:var(--mut)}
.row ul{display:flex;flex-wrap:wrap;gap:.3rem 1.2rem;list-style:none;margin-top:.4rem;font-size:.9rem;color:var(--navy)}
.row li::before{content:"\2022";color:var(--oc);margin-right:.4rem}
.more{font-weight:700;text-decoration:none;color:var(--navy);padding:.6rem 1rem;border:1px solid var(--bd);border-radius:10px;background:#fff;white-space:nowrap}
.more:hover{background:var(--navy);color:#fff}

/* stepper tabs */
.stepper{padding:1.8rem}
.rail{position:relative;display:flex;justify-content:space-between;margin-bottom:1.6rem}
.rail::before{content:"";position:absolute;top:26px;left:26px;right:26px;height:4px;background:var(--bd);border-radius:4px}
.fill{position:absolute;top:26px;left:26px;height:4px;width:0;background:linear-gradient(90deg,var(--oc),var(--sky));border-radius:4px;transition:width .5s}
.st{position:relative;z-index:1;width:56px;background:none;border:0;cursor:pointer;font:700 1.1rem Cambria,Georgia,serif;color:var(--navy);display:grid;justify-items:center;gap:.4rem}
.st::before{content:"";display:none}
.st{--c:#fff}
.st small{font:600 .8rem "Gill Sans","Segoe UI",sans-serif;color:var(--mut)}
.st:not(.on):not(.done){}
.st{padding-top:0}
.st{isolation:isolate}
.st::after{content:"";position:absolute;top:0;left:50%;translate:-50% 0;width:52px;height:52px;border-radius:50%;background:#fff;border:3px solid var(--bd);z-index:-1;transition:.3s}
.st.done::after{border-color:var(--oc)}
.st.on::after{border-color:var(--navy);background:var(--oc)}
.st{height:auto;line-height:52px}
.st small{line-height:1.2}
.panels{min-height:110px}
.pn{display:none}
.pn.on{display:block;animation:pg .4s}
.pn h3{font-size:1.3rem;margin-bottom:.4rem}
.pn p{color:var(--mut);max-width:62ch}

/* results */
.res{position:relative;height:240px;border-radius:var(--r);overflow:hidden;border:1px solid var(--bd);box-shadow:var(--sh)}
.r1{background:radial-gradient(circle at 25% 30%,#86efac,transparent 55%),linear-gradient(135deg,#dcfce7,#dbeafe)}
.r2{background:repeating-linear-gradient(90deg,#dbeafe 0 22px,#eff6ff 22px 44px)}
.r3{background:radial-gradient(circle at 75% 70%,#fcd34d,transparent 55%),linear-gradient(160deg,#fef3c7,#e0e7ff)}
.ov{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:flex-end;padding:1.3rem;background:linear-gradient(0deg,rgba(20,33,61,.88),transparent 70%);color:#fff;transition:background .3s}
.res:hover .ov{background:rgba(20,33,61,.9)}
.ov p{max-height:0;opacity:0;overflow:hidden;transition:.35s}
.res:hover .ov p{max-height:120px;opacity:1}

/* article */
.article{padding:clamp(1.3rem,4vw,3.2rem);font-size:1.06rem}
.keys{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-bottom:2rem}
.keys div{padding:1rem;border-radius:14px;background:var(--navy);color:#fff;text-align:center}
.keys b{display:block;font:700 2rem Cambria,Georgia,serif;color:var(--oc)}
.keys span{font-size:.85rem;color:#c3cde4}
.article h2{font-size:clamp(1.5rem,2.8vw,2.1rem);margin:2.6rem 0 .9rem;color:var(--navy);padding-bottom:.4rem;border-bottom:2px solid var(--oc);display:inline-block}
.article h2:first-of-type{margin-top:.5rem}
.article h3{font-size:1.22rem;margin:1.5rem 0 .5rem;color:#1d4ed8}
.article p{margin-bottom:1rem;max-width:74ch}
.lead{font-size:1.2rem;color:var(--mut)}
.article ul,.article ol{margin:0 0 1.2rem 1.4rem}
.article li{margin-bottom:.4rem}
.check{list-style:none;margin-left:0!important}
.check li::before{content:"\2713";color:#16a34a;font-weight:700;margin-right:.6rem}
.callout,.stat-box{padding:1rem 1.2rem;border-radius:14px;margin:1.3rem 0;border:1px solid var(--bd);border-left-width:5px}
.tip{background:#ecfdf5;border-left-color:#16a34a}
.warn{background:#fff1f2;border-left-color:#e11d48}
.sum{background:#eff6ff;border-left-color:var(--sky)}
.stat-box{background:#fffbeb;border-left-color:var(--oc)}
blockquote{margin:1.5rem 0;padding:.3rem 1.2rem;border-left:4px solid var(--oc);font-family:Cambria,Georgia,serif;font-size:1.25rem;font-style:italic}
.table-scroll{overflow-x:auto;margin:1rem 0}
table{border-collapse:collapse;width:100%;min-width:520px;font-size:.96rem}
th,td{padding:.7rem .9rem;text-align:left;border-bottom:1px solid var(--bd)}
th{background:rgba(20,33,61,.07)}
.mini{padding:1.1rem;border-radius:14px;background:#fff;border:1px solid var(--bd)}
.article .mini h3{margin-top:0;font-size:1.1rem}
.mini p{margin:0;font-size:.97rem}
.pc{padding:1.1rem;border-radius:14px;border:1px solid var(--bd)}
.pro{background:#ecfdf5}.con{background:#fff1f2}
.pc ul{margin-bottom:0}

/* faq */
.faq{display:grid;gap:.8rem}
.qa{border:1px solid var(--bd);border-radius:14px;background:var(--glass);overflow:hidden}
.q{width:100%;text-align:left;background:none;border:0;color:var(--ink);font:inherit;font-weight:700;padding:1.1rem 3rem 1.1rem 1.3rem;cursor:pointer;position:relative}
.q::after{content:"+";position:absolute;right:1.3rem;top:50%;translate:0 -50%;font-size:1.5rem;color:var(--oc);transition:rotate .3s}
.q[aria-expanded="true"]::after{rotate:45deg}
.a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.a p{padding:0 1.3rem 1.2rem;color:var(--mut)}

/* testimonials band */
.band{background:var(--navy);border-radius:28px;padding:3.2rem clamp(1.2rem,4vw,3rem);color:#fff;margin-top:1rem;margin-bottom:1rem}
.band .sec-title{color:#fff}.band .sec-sub{color:#c3cde4}
.band .glass{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.18);color:#fff}
.band .card{padding:1.6rem;position:relative}
.band .card::before{content:"\201C";position:absolute;top:.2rem;right:1.1rem;font:700 4.5rem Georgia,serif;color:rgba(224,159,62,.35)}
.stars{color:var(--oc);letter-spacing:3px;margin-bottom:.6rem}
.rv{border:0;margin:0 0 1.2rem;padding:0;font-family:inherit;font-style:normal;font-size:1rem}
figcaption{display:flex;align-items:center;gap:.8rem}
figcaption small{display:block;color:#c3cde4}
.av{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;font-weight:700;background:linear-gradient(135deg,var(--oc),var(--sky));color:#fff}
.card:hover{box-shadow:0 22px 50px rgba(0,0,0,.3)}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:1.4rem}
.info,.form{padding:2rem}
.info p{margin:1rem 0;color:var(--mut)}
.info b{color:var(--ink)}
.form{display:grid;gap:1rem}
label{display:grid;gap:.35rem;font-weight:600;font-size:.95rem}
input[type=text],input[type=email],input[type=tel],textarea{font:inherit;padding:.8rem 1rem;border-radius:12px;border:1px solid var(--bd);background:#fff;color:var(--ink)}
input:focus,textarea:focus{outline:2px solid var(--sky);border-color:transparent}
.note{min-height:1.4rem;color:#15803d;font-weight:600}

.footer{padding:3rem 0 1.5rem;border-top:1px solid var(--bd);margin-top:2rem}
.footer .logo{color:var(--navy)}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:2rem}
.footer h4{margin-bottom:.8rem;color:var(--navy)}
.footer ul{list-style:none;color:var(--mut)}
.footer li{margin-bottom:.45rem}
.footer p{margin-top:.8rem;color:var(--mut)}
.social{display:flex;gap:.6rem;margin-top:1rem}
.social span{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;border:1px solid var(--bd);color:var(--navy);font-weight:700;background:#fff}
.copy{text-align:center;margin-top:2.4rem;font-size:.9rem}

.rv-on{opacity:0;transform:translateY(24px);transition:opacity .7s,transform .7s}
.rv-on.in{opacity:1;transform:none}

@media(max-width:1080px){.hero{grid-template-columns:1fr;min-height:auto}.grid3{grid-template-columns:1fr 1fr}}
@media(max-width:900px){
:root{--sw:0px}
.side{right:0;bottom:auto;width:auto;flex-direction:row;align-items:center;gap:1rem;padding:.7rem 4%}
.burger{display:block}
.menu{position:absolute;top:100%;left:0;right:0;background:rgba(20,33,61,.97);padding:0 4%;max-height:0;overflow:hidden;transition:max-height .35s,padding .3s}
.menu.open{max-height:480px;padding:.8rem 4% 1.2rem}
.hero{padding-top:6.5rem}
html{scroll-padding-top:76px}
.contact-grid{grid-template-columns:1fr}.fgrid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
.grid3,.grid2,.fgrid,.keys{grid-template-columns:1fr}
.row{grid-template-columns:1fr;text-align:left}.more{justify-self:start}
.btn{width:100%}.menu .btn{width:100%}
.st small{display:none}.st{width:40px}.st::after{width:38px;height:38px}.st{line-height:38px}.rail::before,.fill{top:19px;left:19px}.rail::before{right:19px}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.rv-on{opacity:1;transform:none}html{scroll-behavior:auto}}