:root{
  --navy:#0B3C5D; --navy-2:#082C45; --water:#2A9DD6; --water-soft:#DCEFF9;
  --clay:#8C6A4A; --clay-soft:#EAE0D3; --paper:#F6F4EF; --paper-2:#FFFFFF; --ink:#1A2430; --ink-2:#4A5563; --line:#DAD6CC;
  --ok:#2E8B57; --bg:var(--paper); --surface:var(--paper-2); --text:var(--ink); --muted:var(--ink-2);
  --radius:6px; --shadow:0 10px 30px rgba(11,60,93,.08);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0E151C; --surface:#162029; --text:#EEF2F5; --muted:#A6B2BD; --line:#2A3641;
    --water-soft:#12314A; --clay-soft:#2E251C; --paper:#0E151C; --paper-2:#162029; --ink:#EEF2F5; --ink-2:#A6B2BD;
    --shadow:0 10px 30px rgba(0,0,0,.35);
  }
}
:root[data-theme="dark"]{
  --bg:#0E151C; --surface:#162029; --text:#EEF2F5; --muted:#A6B2BD; --line:#2A3641;
  --water-soft:#12314A; --clay-soft:#2E251C; --paper:#0E151C; --paper-2:#162029; --ink:#EEF2F5; --ink-2:#A6B2BD;
  --shadow:0 10px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:"Sarabun",system-ui,-apple-system,"Segoe UI",sans-serif;font-size:17px;line-height:1.65}
h1,h2,h3,h4{font-family:"Prompt","Sarabun",system-ui,sans-serif;line-height:1.25;margin:0;text-wrap:balance;color:var(--text)}
p{margin:0}
a{color:inherit}
.wrap{max-width:1140px;margin:0 auto;padding:0 24px}
.eyebrow{font-family:"Prompt",sans-serif;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--water);font-weight:600}
.btn{display:inline-flex;align-items:center;gap:10px;padding:13px 22px;border-radius:var(--radius);font-family:"Prompt",sans-serif;font-weight:600;font-size:16px;text-decoration:none;border:2px solid transparent;cursor:pointer;transition:transform .15s ease,background .15s ease}
.btn:hover{transform:translateY(-1px)}
.btn:focus-visible{outline:3px solid var(--water);outline-offset:2px}
.btn-primary{background:#E8A33D;color:#1A2430}
.btn-primary:hover{background:#F0B45A}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn-navy{background:var(--navy);color:#fff}
.btn-line{background:transparent;border-color:var(--navy);color:var(--navy)}
:root[data-theme="dark"] .btn-line{border-color:var(--water);color:var(--water)}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .btn-line{border-color:var(--water);color:var(--water)}}


/* top bar */
.topbar{background:var(--navy-2);color:#CFE3F1;font-size:14px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-top:8px;padding-bottom:8px;flex-wrap:wrap}
.topbar span+span{margin-left:22px}
.topbar strong{color:#fff;font-weight:600}

/* nav */
header.nav{position:sticky;top:0;z-index:20;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:0 2px 12px rgba(0,0,0,.04)}
header.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:74px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo .mark{width:44px;height:44px;border-radius:8px;background:var(--navy);display:grid;place-items:center;position:relative;overflow:hidden}
.logo .mark::after{content:"";position:absolute;left:0;right:0;bottom:0;height:14px;background:var(--water)}
.logo .mark svg{position:relative;z-index:1}
.logo .name{font-family:"Prompt",sans-serif;font-weight:700;font-size:20px;color:var(--navy);line-height:1.1}
:root[data-theme="dark"] .logo .name{color:#fff}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .logo .name{color:#fff}}
.logo .sub{font-size:12px;color:var(--muted);font-weight:400;display:block;letter-spacing:.02em}
nav.menu{display:flex;gap:4px}
nav.menu a{text-decoration:none;display:block;background:none;border:0;font-family:"Prompt",sans-serif;font-size:15.5px;font-weight:500;color:var(--text);padding:10px 14px;border-radius:var(--radius);cursor:pointer}
nav.menu a:hover{background:var(--water-soft)}
nav.menu a.active{color:var(--water);box-shadow:inset 0 -3px 0 var(--water);border-radius:0}
nav.menu a:focus-visible{outline:3px solid var(--water);outline-offset:-3px}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-cta .phone{font-family:"Prompt",sans-serif;font-weight:600;font-size:18px;color:var(--navy);text-decoration:none;font-variant-numeric:tabular-nums}
:root[data-theme="dark"] .nav-cta .phone{color:#fff}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .nav-cta .phone{color:#fff}}



/* hero */
.hero{background:var(--navy);color:#fff;position:relative;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;padding-top:72px;padding-bottom:72px;align-items:center}
.hero h1{font-size:clamp(34px,4.4vw,52px);font-weight:700;color:#fff}
.hero h1 em{font-style:normal;color:#8FD0F5}
.hero .lead{font-size:19px;color:#CFE3F1;margin-top:18px;max-width:34em}
.hero .actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero .facts{display:flex;gap:28px;margin-top:38px;flex-wrap:wrap}
.hero .fact b{display:block;font-family:"Prompt",sans-serif;font-size:30px;font-weight:600;line-height:1;font-variant-numeric:tabular-nums}
.hero .fact span{font-size:14px;color:#A9C6DA}
/* well diagram */
.well-fig{margin:0;background:#fff;border-radius:10px;box-shadow:0 20px 50px rgba(0,0,0,.35);overflow:hidden;position:relative}
.well-fig figcaption{background:var(--navy-2);color:#CFE3F1;font-size:13.5px;line-height:1.5;padding:10px 14px;display:flex;justify-content:space-between;gap:12px;align-items:center}
.well-fig figcaption b{color:#fff;font-family:"Prompt",sans-serif;font-weight:600}
.well-fig .zoom{flex:none;font-family:"Prompt",sans-serif;font-size:12.5px;color:#8FD0F5}
.lightbox{position:fixed;inset:0;z-index:50;background:rgba(8,20,30,.88);display:none;overflow:auto;padding:24px 16px}
.lightbox.open{display:block}
.lightbox img{display:block;margin:0 auto;max-width:min(900px,100%);height:auto;background:#fff;border-radius:6px}
.lightbox .close{position:fixed;top:14px;right:16px;background:#fff;color:#1A2430;border:0;border-radius:50%;width:42px;height:42px;font-size:24px;line-height:1;cursor:pointer}

/* trust strip */
.trust{background:var(--surface);border-bottom:1px solid var(--line)}
.trust .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.trust .item{padding:22px 18px;display:flex;gap:14px;align-items:flex-start;border-left:1px solid var(--line)}
.trust .item:first-child{border-left:0}
.trust .item svg{flex:none;margin-top:3px}
.trust .item b{font-family:"Prompt",sans-serif;font-weight:600;display:block;font-size:16px}
.trust .item span{font-size:14px;color:var(--muted)}
@media (max-width:900px){.trust .wrap{grid-template-columns:1fr 1fr}.trust .item:nth-child(3){border-left:0}}

section{padding:72px 0}
.sec-head{max-width:40em;margin-bottom:38px}
.sec-head h2{font-size:clamp(26px,3vw,36px);font-weight:600;margin-top:8px}
.sec-head p{color:var(--muted);margin-top:12px}

/* services */
.services{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;display:flex;flex-direction:column;gap:10px;position:relative}
.svc .ico{width:46px;height:46px;border-radius:8px;background:var(--water-soft);display:grid;place-items:center;color:var(--navy)}
:root[data-theme="dark"] .svc .ico{color:#8FD0F5}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .svc .ico{color:#8FD0F5}}
.svc h3{font-size:19px;font-weight:600;margin-top:6px}
.svc p{color:var(--muted);font-size:15.5px}
.svc.featured{grid-column:span 1;border-color:var(--water);box-shadow:var(--shadow)}
.svc .tag{position:absolute;top:14px;right:14px;font-family:"Prompt",sans-serif;font-size:11px;letter-spacing:.08em;text-transform:uppercase;background:var(--water);color:#fff;padding:3px 8px;border-radius:3px}
@media (max-width:900px){.services{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.services{grid-template-columns:1fr}}

/* why + process */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
@media (max-width:900px){.split{grid-template-columns:1fr}}
.checks{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:14px}
.checks li{display:flex;gap:12px;align-items:flex-start}
.checks li svg{flex:none;margin-top:5px}
.checks b{font-weight:600}
.steps{counter-reset:s;display:flex;flex-direction:column;gap:0;border-left:2px solid var(--line);margin-left:18px}
.step{position:relative;padding:0 0 26px 30px}
.step::before{counter-increment:s;content:counter(s);position:absolute;left:-19px;top:0;width:36px;height:36px;border-radius:50%;background:var(--navy);color:#fff;font-family:"Prompt",sans-serif;font-weight:600;display:grid;place-items:center;font-size:15px}
.step h4{font-size:17px;font-weight:600;padding-top:6px}
.step p{color:var(--muted);font-size:15.5px}

/* areas */
.areas-band{background:var(--navy);color:#fff}
.areas-band .wrap{display:grid;grid-template-columns:1fr 1.2fr;gap:48px;align-items:center}
.areas-band h2{color:#fff;font-size:30px;font-weight:600}
.areas-band p{color:#CFE3F1;margin-top:12px}
.area-list{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.area-list a{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:var(--radius);padding:12px 14px;text-decoration:none;color:#fff;font-family:"Prompt",sans-serif;font-weight:500;font-size:15px;display:flex;justify-content:space-between;align-items:center}
.area-list a:hover{background:rgba(255,255,255,.16)}
.area-list small{color:#A9C6DA;font-family:"Sarabun",sans-serif;font-weight:400}
.area-list a.primary{grid-column:1/-1;background:#E8A33D;border-color:#E8A33D;color:#1A2430;padding:16px 18px;flex-wrap:wrap;gap:6px}
.area-list a.primary small{color:#3A2A10;font-weight:500}
.area-list a.primary .big{font-size:19px;font-weight:700}
@media (max-width:900px){.areas-band .wrap{grid-template-columns:1fr}.area-list{grid-template-columns:1fr 1fr}}

/* faq */
.faq{display:grid;grid-template-columns:1fr 1fr;gap:18px 40px}
@media (max-width:900px){.faq{grid-template-columns:1fr}}
details{border-top:1px solid var(--line);padding:16px 0}
details summary{cursor:pointer;font-family:"Prompt",sans-serif;font-weight:500;font-size:17px;list-style:none;display:flex;justify-content:space-between;gap:16px}
details summary::after{content:"+";color:var(--water);font-weight:600;font-size:22px;line-height:1}
details[open] summary::after{content:"–"}
details p{color:var(--muted);margin-top:10px;font-size:15.5px;max-width:38em}

/* articles */
.art-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media (max-width:900px){.art-grid{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.art-grid{grid-template-columns:1fr}}
.art{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.art .thumb{height:150px;background:linear-gradient(180deg,var(--water-soft) 0 45%,var(--clay-soft) 45% 70%,var(--clay) 70%);position:relative}
.art .thumb::after{content:"";position:absolute;left:50%;top:0;width:10px;height:100%;background:var(--navy);transform:translateX(-50%);opacity:.85}
.art .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.art .cat{font-family:"Prompt",sans-serif;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--clay);font-weight:600}
:root[data-theme="dark"] .art .cat{color:#C9A88A}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .art .cat{color:#C9A88A}}
.art h3{font-size:18.5px;font-weight:600}
.art p{color:var(--muted);font-size:15px;flex:1}
.art .kw{font-size:12.5px;color:var(--muted);border-top:1px dashed var(--line);padding-top:10px;margin-top:6px}
.art .kw code{font-family:inherit;background:var(--water-soft);padding:1px 6px;border-radius:3px;color:var(--text)}
.art .meta{font-size:13px;color:var(--muted)}

/* article page */
.article{display:grid;grid-template-columns:1fr 320px;gap:56px;align-items:start}
@media (max-width:900px){.article{grid-template-columns:1fr}}
.article h1{font-size:clamp(28px,3.4vw,40px);font-weight:600;margin-top:10px}
.article .meta{color:var(--muted);font-size:14px;margin-top:12px}
.article .body{margin-top:28px;max-width:66ch}
.article .body h2{font-size:24px;font-weight:600;margin:34px 0 10px}
.article .body p{margin:0 0 16px}
.article .body ul{margin:0 0 16px;padding-left:22px}
table{border-collapse:collapse;width:100%;font-size:15.5px;margin:6px 0 18px}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-family:"Prompt",sans-serif;font-weight:600;background:var(--water-soft)}
td.num{font-variant-numeric:tabular-nums;white-space:nowrap}
.tablewrap{overflow-x:auto}
.aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.card h4{font-size:16px;font-weight:600;margin-bottom:10px}
.card.cta{background:var(--navy);color:#fff;border-color:var(--navy)}
.card.cta h4{color:#fff}
.card.cta p{color:#CFE3F1;font-size:15px}
.card.cta .btn{margin-top:14px;width:100%;justify-content:center}
.card ul{margin:0;padding-left:18px;font-size:15px;color:var(--muted)}
.card li{margin-bottom:6px}
.callout{border-left:4px solid var(--water);background:var(--water-soft);padding:14px 18px;border-radius:0 var(--radius) var(--radius) 0;margin:0 0 18px;font-size:15.5px}

/* contact */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:48px}
@media (max-width:900px){.contact{grid-template-columns:1fr}}
.contact dl{display:grid;grid-template-columns:auto 1fr;gap:12px 22px;margin:22px 0 0;font-size:16.5px}
.contact dt{font-family:"Prompt",sans-serif;font-weight:500;color:var(--muted)}
.contact dd{margin:0;font-variant-numeric:tabular-nums}
.contact dd a{text-decoration:none;font-weight:600;color:var(--navy)}
:root[data-theme="dark"] .contact dd a{color:#8FD0F5}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .contact dd a{color:#8FD0F5}}
.map{background:var(--water-soft);border:1px solid var(--line);border-radius:var(--radius);height:280px;display:grid;place-items:center;color:var(--muted);font-family:"Prompt",sans-serif;margin-top:26px;position:relative;overflow:hidden}
.map::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,transparent 0 58px,rgba(11,60,93,.08) 58px 60px),repeating-linear-gradient(0deg,transparent 0 58px,rgba(11,60,93,.08) 58px 60px)}
.map span{position:relative;background:var(--surface);padding:8px 14px;border-radius:4px;font-size:14px}
form.quote{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;display:grid;gap:14px}
form.quote label{font-family:"Prompt",sans-serif;font-size:14px;font-weight:500;display:grid;gap:6px}
form.quote input,form.quote select,form.quote textarea{font:inherit;padding:11px 12px;border:1px solid var(--line);border-radius:4px;background:var(--bg);color:var(--text)}
form.quote input:focus,form.quote select:focus,form.quote textarea:focus{outline:3px solid var(--water);outline-offset:0;border-color:var(--water)}
form.quote .row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
form.quote small{color:var(--muted);font-size:13px}

/* footer */
footer{background:var(--navy-2);color:#A9C6DA;padding:48px 0 28px;font-size:14.5px}
footer .wrap{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:12px}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:7px}
footer a{color:#CFE3F1;text-decoration:none}
footer a:hover{color:#fff}
footer .legal{grid-column:1/-1;border-top:1px solid rgba(255,255,255,.12);padding-top:18px;margin-top:10px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font-size:13px}
@media (max-width:900px){footer .wrap{grid-template-columns:1fr 1fr}}

/* sticky mobile call */
.mobile-call{display:none;position:fixed;left:0;right:0;bottom:0;z-index:30;background:#E8A33D;color:#1A2430;font-family:"Prompt",sans-serif;font-weight:600;text-align:center;padding:14px;text-decoration:none;font-size:17px}
@media (max-width:900px){.mobile-call{display:block}body{padding-bottom:56px}}


/* ===== interactions ===== */
.well-fig{perspective:1200px;transform-style:preserve-3d;transition:transform .25s ease,box-shadow .25s ease;will-change:transform}
.stage{position:relative;overflow:hidden;cursor:zoom-in;background:#fff}
.stage img{display:block;width:100%;height:auto;max-height:560px;object-fit:cover;object-position:top;transition:transform .5s ease}
.lens{position:absolute;width:170px;height:170px;border-radius:50%;border:3px solid #fff;box-shadow:0 8px 30px rgba(0,0,0,.35),0 0 0 1px rgba(11,60,93,.4);pointer-events:none;opacity:0;transform:scale(.6);transition:opacity .2s ease,transform .2s ease;background-repeat:no-repeat;background-color:#fff;z-index:2}
.stage.lensing .lens{opacity:1;transform:scale(1)}
.hot{position:absolute;left:calc(var(--x)*100%);top:var(--top,0);transform:translate(-50%,-50%);border:0;background:none;padding:0;cursor:pointer;z-index:3}
.hot .dot{display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:#E8A33D;color:#1A2430;font:700 13px/1 "Prompt",sans-serif;box-shadow:0 0 0 4px rgba(232,163,61,.35);position:relative}
.hot .dot::after{content:"";position:absolute;inset:-4px;border-radius:50%;border:2px solid #E8A33D;animation:ping 2.2s ease-out infinite}
.hot:nth-of-type(2) .dot::after{animation-delay:.35s}.hot:nth-of-type(3) .dot::after{animation-delay:.7s}.hot:nth-of-type(4) .dot::after{animation-delay:1.05s}.hot:nth-of-type(5) .dot::after{animation-delay:1.4s}.hot:nth-of-type(6) .dot::after{animation-delay:1.75s}
@keyframes ping{0%{transform:scale(1);opacity:.9}100%{transform:scale(2.1);opacity:0}}
.hot .tip{position:absolute;left:34px;top:50%;transform:translateY(-50%) translateX(-6px);width:200px;background:var(--navy-2);color:#CFE3F1;text-align:left;font:400 13.5px/1.5 "Sarabun",sans-serif;padding:10px 12px;border-radius:6px;box-shadow:0 10px 30px rgba(0,0,0,.35);opacity:0;pointer-events:none;transition:opacity .18s ease,transform .18s ease}
.hot .tip b{display:block;color:#fff;font:600 14px/1.35 "Prompt",sans-serif;margin-bottom:3px}
.hot.flip .tip{left:auto;right:34px;transform:translateY(-50%) translateX(6px)}
.hot:hover .tip,.hot:focus-visible .tip,.hot.on .tip{opacity:1;transform:translateY(-50%) translateX(0)}
.hot:focus-visible .dot{outline:3px solid #fff;outline-offset:2px}
.stage:has(.hot:hover) .lens{opacity:0}
.well-fig .zoom{background:none;border:0;cursor:pointer;padding:4px 0}
.well-fig .zoom:hover{color:#fff}

/* hero wave */
.hero{padding-bottom:0}
.wave{background:var(--surface);line-height:0;margin-top:-1px}
.wave svg{display:block;width:100%;height:46px}
.wave .w1{fill:var(--navy);animation:drift 9s ease-in-out infinite alternate}
.wave .w2{fill:var(--navy);opacity:.45;animation:drift 12s ease-in-out infinite alternate-reverse}
@keyframes drift{from{transform:translateX(0)}to{transform:translateX(-60px)}}
.wave svg{transform:scaleY(-1)}

/* header shrink on scroll */
header.nav .wrap{transition:height .25s ease}
header.nav.scrolled .wrap{height:62px}
header.nav.scrolled{box-shadow:0 6px 24px rgba(11,60,93,.12)}

/* buttons: shine sweep */
.btn{position:relative;overflow:hidden}
.btn-primary::after,.btn-navy::after{content:"";position:absolute;top:0;left:-60%;width:40%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.55),transparent);transform:skewX(-20deg);transition:left .55s ease}
.btn-primary:hover::after,.btn-navy:hover::after{left:130%}

/* service cards */
.svc{transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.svc:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(11,60,93,.14);border-color:var(--water)}
.svc .ico{transition:background .25s ease,color .25s ease,transform .35s cubic-bezier(.3,1.6,.5,1)}
.svc:hover .ico{background:var(--navy);color:#fff;transform:rotate(-8deg) scale(1.08)}

/* article cards: drill descends into strata on hover */
.art{transition:transform .25s ease,box-shadow .25s ease}
.art:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(11,60,93,.14)}
.art .thumb{overflow:hidden}
.art .thumb::after{height:40%;transition:height .6s cubic-bezier(.4,0,.2,1)}
.art:hover .thumb::after{height:100%}
.art .thumb::before{content:"";position:absolute;left:0;right:0;bottom:0;height:22%;background:linear-gradient(90deg,transparent,rgba(143,208,245,.6),transparent);background-size:50% 100%;background-repeat:no-repeat;animation:flow 3s linear infinite;opacity:0;transition:opacity .3s}
.art:hover .thumb::before{opacity:1}
@keyframes flow{from{background-position:-100% 0}to{background-position:200% 0}}
.art h3{transition:color .2s}
.art:hover h3{color:var(--water)}

/* area chips */
.area-list a{transition:background .2s ease,transform .2s ease,border-color .2s}
.area-list a:hover{transform:translateY(-2px);border-color:#8FD0F5}
.area-list .arr{font-style:normal;opacity:0;transform:translateX(-6px);transition:opacity .2s,transform .2s;margin-left:8px}
.area-list a:hover .arr{opacity:1;transform:translateX(0)}
.area-list a.primary{position:relative;overflow:hidden}
.area-list a.primary::before{content:"";position:absolute;width:40px;height:40px;border-radius:50%;left:28px;top:50%;margin-top:-20px;border:2px solid rgba(26,36,48,.35);animation:ripple 3s ease-out infinite}
.area-list a.primary > *{position:relative}
@keyframes ripple{from{transform:scale(.4);opacity:1}to{transform:scale(9);opacity:0}}
.area-list a.primary:hover{background:#F0B45A}

/* faq open animation */
details[open] p{animation:faqIn .3s ease}
@keyframes faqIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}
details summary{transition:color .2s}
details summary:hover{color:var(--water)}

@keyframes pageIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* scroll reveal (hidden state only added by JS, below the fold) */
.rv{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.2,1);transition-delay:var(--d,0s)}
.rv.in{opacity:1;transform:none}

/* process steps: line fills as it scrolls in */
.steps{position:relative}
.steps::before{content:"";position:absolute;left:-2px;top:0;width:2px;height:var(--fill,0%);background:var(--water);transition:height 1.2s ease}
.step::before{transition:background .3s ease,transform .3s ease}
.step:hover::before{background:var(--water);transform:scale(1.12)}

/* depth gauge */
.count{font-style:normal}
.gauge{position:fixed;right:30px;top:50%;height:220px;margin-top:-110px;width:4px;border-radius:4px;background:rgba(11,60,93,.15);z-index:15}
.gauge-fill{position:absolute;left:0;top:0;width:100%;height:0;border-radius:4px;background:linear-gradient(var(--clay),var(--water))}
.gauge-bit{position:absolute;left:50%;top:0;transform:translate(-50%,-4px);transition:top .1s linear}
.gauge-lbl{position:absolute;top:-26px;left:50%;transform:translateX(-50%);font:600 10.5px/1 "Prompt",sans-serif;color:var(--muted);white-space:nowrap}
@media (max-width:1240px){.gauge{display:none}}

/* back to top */
.totop{position:fixed;right:18px;bottom:22px;z-index:25;width:46px;height:46px;border-radius:50%;border:0;background:var(--navy);color:#fff;display:grid;place-items:center;cursor:pointer;box-shadow:0 8px 24px rgba(0,0,0,.25);opacity:0;transform:translateY(12px);pointer-events:none;transition:opacity .25s,transform .25s,background .2s}
.totop.show{opacity:1;transform:none;pointer-events:auto}
.totop:hover{background:var(--water)}
@media (max-width:900px){.totop{bottom:72px}}

/* lightbox fade */
.lightbox{transition:opacity .25s}
.lightbox.open{animation:pageIn .25s ease}
@media (max-width:900px){.hero .wrap{grid-template-columns:1fr}.well-fig{max-width:520px}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

@keyframes pageIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ===== production additions ===== */
header.nav .wrap{position:relative}
.menu-btn{display:none;width:44px;height:44px;border-radius:var(--radius);border:1px solid var(--line);background:var(--surface);color:var(--text);place-items:center;cursor:pointer}
.menu-btn:focus-visible{outline:3px solid var(--water);outline-offset:2px}
@media (max-width:900px){
  .menu-btn{display:grid}
  .nav-cta .phone{display:none}
  nav.menu{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:2px;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:0 14px 30px rgba(11,60,93,.14);padding:8px 16px 16px}
  nav.menu.open{display:flex}
  nav.menu a{padding:12px 10px;border-radius:var(--radius)}
  nav.menu a.active{box-shadow:inset 3px 0 0 var(--water)}
}
@media (max-width:560px){
  .nav-cta .btn{display:none}
  .wrap{padding:0 16px}
  .logo .sub{display:none}
  .topbar .wrap>div:last-child{display:none}
  .topbar span+span{margin-left:14px}
  form.quote .row{grid-template-columns:1fr}
  .area-list{grid-template-columns:1fr 1fr}
  section{padding:56px 0}
  .hero .wrap{padding-top:48px;padding-bottom:56px}
}
.crumbs{font-size:14px;color:var(--muted);margin-bottom:14px}
.crumbs a{text-decoration:none;color:var(--muted)}
.crumbs a:hover{color:var(--water)}
.map iframe{position:relative;border:0;width:100%;height:100%}
.map.live{display:block}
.map.live::before{display:none}
.form-msg{font-size:15px;border-radius:4px;padding:10px 12px;display:none}
.form-msg.ok{display:block;background:#E6F4EC;color:#1D5E3A}
.form-msg.err{display:block;background:#FCECEC;color:#8A1F1F}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.svc{scroll-margin-top:100px}
.svc:target{border-color:var(--water);box-shadow:0 0 0 3px var(--water-soft),var(--shadow)}
.btn-lineoa{background:#06C755;color:#fff}
.btn-lineoa:hover{background:#05B34C}
.line-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;display:grid;gap:16px;align-content:start;align-self:start}
.line-card .badge{display:inline-flex;align-items:center;gap:8px;font-family:"Prompt",sans-serif;font-weight:600;color:#06C755;font-size:14px}
.line-card ol{margin:0;padding-left:20px;color:var(--muted);display:grid;gap:6px}
.line-card .btn{justify-content:center;width:100%;font-size:17px;padding:15px 22px}
.line-card .or{text-align:center;color:var(--muted);font-size:14px}
.line-card small{color:var(--muted);font-size:13px;text-align:center}
.mobile-bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:30;grid-template-columns:1fr 1fr}
.mobile-bar a{display:flex;align-items:center;justify-content:center;gap:8px;padding:14px 8px;font-family:"Prompt",sans-serif;font-weight:600;font-size:16px;text-decoration:none}
.mobile-bar .call{background:#E8A33D;color:#1A2430}
.mobile-bar .line{background:#06C755;color:#fff}
@media (max-width:900px){.mobile-bar{display:grid}}
.notfound{text-align:center;padding:120px 0}
.notfound h1{font-size:clamp(30px,4vw,44px);font-weight:600;margin:10px 0 14px}
.notfound p{color:var(--muted);margin-bottom:26px}