/* Abyss design system — Perris Leak Locators (6th system: premium diagnostic tech) */
:root{
  --ink:#060d1f; --ink2:#0a1830; --ink3:#10254a;
  --electric:#2e7cf6; --cyan:#38e1ff; --aqua:#7ef0d4;
  --paper:#f4f8fc; --mist:#e9f1f9; --line:#d5e3f0;
  --mut:#5a6d88; --amber:#fbbf24; --red:#f04438;
  --radius:16px;
  --shadow:0 16px 40px rgba(6,13,31,.16);
  --glow:0 0 24px rgba(56,225,255,.35);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;color:var(--ink);background:var(--paper);line-height:1.65;font-size:17px;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:'Outfit','Inter',system-ui,sans-serif;line-height:1.15;letter-spacing:-.015em}
img{max-width:100%;height:auto;border-radius:var(--radius)}
a{color:#0b5ed7}
.wrap{max-width:1200px;margin:0 auto;padding:0 22px}
/* topbar */
.topbar{background:var(--ink);color:#cfe4ff;font-size:14px;padding:8px 0}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.topbar a{color:var(--cyan);text-decoration:none;font-weight:700}
.dot-live{display:inline-block;width:8px;height:8px;border-radius:50%;background:#34d399;margin-right:6px;animation:blink 2s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.35}}
/* header + mega menu */
header.site{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:10px 0;gap:14px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand img{width:48px;height:48px;border-radius:13px}
.brand b{font-family:'Outfit',sans-serif;font-size:20px;color:var(--ink);display:block;line-height:1.1}
.brand small{color:var(--mut);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase}
nav.links{display:flex;gap:2px;align-items:center}
.nav-item{position:relative}
.nav-item>a{text-decoration:none;color:var(--ink);font-weight:600;font-size:15px;padding:12px 12px;border-radius:10px;display:inline-block}
.nav-item>a:hover{background:var(--mist);color:#0b5ed7}
.mega{display:none;position:absolute;top:100%;left:0;min-width:300px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:12px;z-index:60}
.nav-item:hover .mega{display:block}
.mega a{display:block;padding:10px 14px;border-radius:9px;text-decoration:none;color:var(--ink);font-size:14.5px;font-weight:500}
.mega a:hover{background:var(--mist);color:#0b5ed7}
.mega a span{display:block;font-size:12.5px;color:var(--mut);font-weight:400}
/* mobile menu (CSS-only accordion) */
.mobile-toggle{display:none}
.mobile-menu-btn{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:10px}
.mobile-menu-btn span{width:26px;height:3px;background:var(--ink);border-radius:2px}
.mobile-menu{display:none;border-top:1px solid var(--line);background:#fff;max-height:70vh;overflow-y:auto}
.mobile-toggle:checked ~ .mobile-menu{display:block}
.mobile-menu details{border-bottom:1px solid var(--line)}
.mobile-menu summary{padding:15px 22px;font-weight:700;cursor:pointer;list-style:none;font-size:16px}
.mobile-menu summary::-webkit-details-marker{display:none}
.mobile-menu details a{display:block;padding:11px 34px;text-decoration:none;color:var(--ink);font-size:15px;border-top:1px solid var(--mist)}
.mobile-menu>a{display:block;padding:15px 22px;font-weight:700;text-decoration:none;color:var(--ink);border-bottom:1px solid var(--line);font-size:16px}
/* buttons */
.btn{display:inline-block;text-decoration:none;font-weight:800;border-radius:999px;padding:15px 32px;font-size:17px;transition:transform .18s,box-shadow .18s;cursor:pointer;border:0}
.btn:hover{transform:translateY(-2px)}
.btn-electric{background:linear-gradient(135deg,var(--electric),var(--cyan));color:#fff;box-shadow:0 10px 26px rgba(46,124,246,.4)}
.btn-navy{background:var(--ink);color:#fff;box-shadow:0 10px 24px rgba(6,13,31,.3)}
.btn-ghost{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.5)}
.btn-ghost:hover{border-color:#fff}
.btn-sm{padding:11px 24px;font-size:15px}
/* hero */
.hero{background:radial-gradient(1000px 500px at 80% 10%,rgba(56,225,255,.14),transparent 60%),linear-gradient(165deg,#060d1f 0%,#0a1830 55%,#0a2140 100%);color:#e8f2ff;padding:60px 0 70px;position:relative;overflow:hidden}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
@media(max-width:900px){.hero .wrap{grid-template-columns:1fr}}
.hero .kicker{color:var(--cyan);font-weight:800;letter-spacing:.16em;text-transform:uppercase;font-size:13px}
.hero h1{font-size:clamp(32px,4.6vw,54px);color:#fff;margin:14px 0 16px}
.hero h1 .accent{background:linear-gradient(90deg,var(--cyan),var(--aqua));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:19px;color:#b8cfee;margin-bottom:28px}
.hero .ctas{display:flex;gap:14px;flex-wrap:wrap}
.hero .badges{display:flex;gap:18px;margin-top:26px;flex-wrap:wrap;color:#9db8d8;font-size:14.5px}
.hero .badges b{color:#fff}
/* underground cross-section animation */
.xsec{width:100%;max-width:520px;margin:0 auto}
.flow-dash{stroke-dasharray:12 16;animation:flow 1.4s linear infinite}
@keyframes flow{to{stroke-dashoffset:-28}}
.leak-ping{animation:ping 2.4s ease-out infinite;transform-origin:center;transform-box:fill-box}
@keyframes ping{0%{transform:scale(.4);opacity:.9}70%{transform:scale(2.6);opacity:0}100%{transform:scale(2.6);opacity:0}}
.wave{animation:wave 3s ease-out infinite;transform-origin:center;transform-box:fill-box}
@keyframes wave{0%{transform:scale(.3);opacity:.8}100%{transform:scale(2.2);opacity:0}}
.scan-v{animation:scanv 5s ease-in-out infinite}
@keyframes scanv{0%,100%{transform:translateY(0);opacity:.2}50%{transform:translateY(180px);opacity:.85}}
.detect-tag{animation:badgepulse 2.4s ease-in-out infinite}
@keyframes badgepulse{0%,100%{opacity:1}50%{opacity:.5}}
.thermal-flicker{animation:flicker 3.5s ease-in-out infinite}
@keyframes flicker{0%,100%{opacity:.55}50%{opacity:.9}}
@media(prefers-reduced-motion:reduce){.flow-dash,.leak-ping,.wave,.scan-v,.detect-tag,.thermal-flicker,.dot-live{animation:none!important}}
/* breadcrumb */
.crumb{font-size:14px;color:var(--mut);margin-bottom:14px}
.crumb a{color:#0b5ed7;text-decoration:none}
/* sections */
.band{padding:66px 0}
.band-dark{background:linear-gradient(180deg,var(--ink),var(--ink2));color:#d8e9ff}
.band-dark h2{color:#fff}
.band-mist{background:var(--mist)}
.sec-head{max-width:780px;margin-bottom:38px}
.sec-head .kicker{color:#0b5ed7;font-weight:800;letter-spacing:.16em;text-transform:uppercase;font-size:13px}
.sec-head h2{font-size:clamp(26px,3.6vw,40px);margin:10px 0 12px}
.sec-head p{color:var(--mut);font-size:18px}
.band-dark .sec-head p{color:#a9c2e2}
.band-dark .sec-head .kicker{color:var(--cyan)}
/* cards */
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:0 4px 14px rgba(6,13,31,.05);transition:transform .2s,box-shadow .2s,border-color .2s;position:relative;overflow:hidden}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--electric),var(--cyan));opacity:0;transition:opacity .2s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--cyan)}
.card:hover::before{opacity:1}
.card h3{font-size:20px;margin:14px 0 10px}
.card p{color:var(--mut);font-size:16px}
.card .icon{width:54px;height:54px;border-radius:15px;background:linear-gradient(135deg,var(--ink),var(--ink3));display:flex;align-items:center;justify-content:center;font-size:25px;box-shadow:inset 0 0 0 1px rgba(56,225,255,.25)}
.card .more{display:inline-block;margin-top:14px;font-weight:800;color:#0b5ed7;text-decoration:none}
.band-dark .card{background:rgba(255,255,255,.04);border-color:#1c3a68;backdrop-filter:blur(6px)}
.band-dark .card p{color:#a9c2e2}
/* symptom chips */
.symptoms{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}
.symptom{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 20px;display:flex;gap:14px;align-items:flex-start;transition:transform .18s,box-shadow .18s}
.symptom:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.symptom .si{font-size:24px;flex-shrink:0}
.symptom b{display:block;font-size:16px;margin-bottom:4px}
.symptom span{color:var(--mut);font-size:14.5px}
/* steps */
.steps{counter-reset:step;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;position:relative}
.step::before{counter-increment:step;content:counter(step);display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--electric),var(--cyan));color:#fff;font-weight:800;font-family:'Outfit',sans-serif;font-size:19px;margin-bottom:14px;box-shadow:0 6px 16px rgba(46,124,246,.35)}
.step h3{font-size:18px;margin-bottom:8px}
.step p{color:var(--mut);font-size:15.5px}
/* split */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
@media(max-width:900px){.split{grid-template-columns:1fr}}
.prose h2{font-size:clamp(24px,3vw,32px);margin:26px 0 12px}
.prose h3{font-size:20px;margin:22px 0 10px}
.prose p,.prose li{margin-bottom:12px;color:#33475f}
.prose ul{padding-left:22px}
.prose strong{color:var(--ink)}
/* faq */
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.faq-item summary{padding:18px 22px;cursor:pointer;font-weight:700;font-size:17px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:24px;color:#0b5ed7;font-weight:400;flex-shrink:0}
.faq-item[open] summary::after{content:"–"}
.faq-item .faq-a{padding:0 22px 20px;color:var(--mut)}
/* cta band */
.cta-band{background:linear-gradient(135deg,#060d1f,#0d2a5e 60%,#073b52);color:#fff;border-radius:24px;padding:54px 44px;text-align:center;margin:20px 0;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 200px at 50% 0%,rgba(56,225,255,.28),transparent 70%)}
.cta-band h2{font-size:clamp(26px,4vw,40px);margin-bottom:12px;position:relative}
.cta-band p{color:#b8cfee;margin-bottom:26px;position:relative}
.cta-band .ctas{position:relative;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
/* forms */
.form-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:34px;box-shadow:var(--shadow)}
.form-card h3{font-size:22px;margin-bottom:6px}
.form-card p.sub{color:var(--mut);font-size:15px;margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-weight:700;font-size:14.5px;margin-bottom:6px}
.field input,.field textarea,.field select{width:100%;padding:13px 15px;border:1.5px solid var(--line);border-radius:10px;font-size:16px;font-family:inherit;background:#fbfdff}
.field input:focus,.field textarea:focus{outline:2px solid var(--cyan);border-color:var(--cyan)}
/* footer */
footer.site{background:var(--ink);color:#9db8d8;padding:56px 0 0}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}
@media(max-width:900px){.foot-grid{grid-template-columns:1fr 1fr}}
footer.site h4{color:#fff;font-size:16px;margin-bottom:16px}
footer.site a{color:#9db8d8;text-decoration:none;font-size:15px}
footer.site a:hover{color:var(--cyan)}
footer.site ul{list-style:none}
footer.site li{margin-bottom:9px}
.foot-bottom{border-top:1px solid #1c3a68;padding:20px 0;font-size:13.5px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
/* call bar mobile */
.call-bar{display:none;position:fixed;bottom:0;left:0;right:0;z-index:60;background:var(--ink);padding:10px 14px calc(10px + env(safe-area-inset-bottom));border-top:1px solid #1c3a68}
.call-bar a{flex:1;text-align:center;padding:13px;border-radius:12px;font-weight:800;text-decoration:none;font-size:16px}
.call-bar .call{background:linear-gradient(135deg,var(--electric),var(--cyan));color:#fff;margin-right:10px}
.call-bar .req{background:transparent;color:#fff;border:2px solid #2c4f7e}
@media(max-width:900px){nav.links{display:none}.mobile-menu-btn{display:flex}}
@media(max-width:760px){.call-bar{display:flex}body{padding-bottom:76px}}