:root{
  --navy:#0b2a3c; --navy2:#123a52; --teal:#0e7c86; --aqua:#2bb3b1; --foam:#9be7e3;
  --sun:#ffb547; --sun2:#ffd166; --coral:#f2795a; --sand:#fbf4e8; --ink:#16303f; --muted:#4f6877;
  --line:#e6ddd0; --radius:18px; --shadow:0 10px 30px rgba(11,42,60,.10);
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;font-family:var(--font);color:var(--ink);background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;display:block}
a{color:var(--teal)}
h1,h2,h3{line-height:1.15;letter-spacing:-.02em;margin:0 0 .5em;color:var(--navy)}
h1{font-size:clamp(2.2rem,5.2vw,3.7rem);font-weight:800}
h2{font-size:clamp(1.7rem,3.4vw,2.5rem);font-weight:800;max-width:22ch}
h3{font-size:1.12rem}
p{margin:0 0 1em}
.wrap{width:min(1160px,100% - 40px);margin-inline:auto}
.narrow{max-width:820px}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;z-index:99;background:#fff;padding:8px 12px;border-radius:8px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;padding:.85em 1.4em;border-radius:999px;font-weight:700;text-decoration:none;border:2px solid transparent;cursor:pointer;font-size:1rem;transition:transform .15s,box-shadow .15s,background .15s}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(11,42,60,.18)}
.btn-sun{background:linear-gradient(135deg,var(--sun2),var(--sun) 50%,var(--coral));color:var(--navy)}
.btn-navy{background:var(--navy);color:#fff}
.btn-ghost{border-color:var(--navy);color:var(--navy);background:transparent}
.btn-sm{padding:.55em 1.1em;font-size:.92rem}
.btn-block{width:100%}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid rgba(11,42,60,.06)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:.6em;text-decoration:none;font-weight:800;font-size:1.25rem;color:var(--navy);letter-spacing:-.01em}
.brand em{font-style:normal;color:var(--teal);font-weight:600}
.brand-light{color:#fff}.brand-light em{color:var(--foam)}
.nav-links{display:flex;align-items:center;gap:1.4rem}
.nav-links a:not(.btn){color:var(--ink);text-decoration:none;font-weight:600;font-size:.95rem}
.nav-links a:not(.btn):hover{color:var(--teal)}
.nav-toggle{display:none;background:none;border:0;padding:10px;cursor:pointer}
.nav-toggle span{display:block;width:24px;height:2.5px;background:var(--navy);margin:5px 0;border-radius:2px;transition:.2s}

/* hero */
.hero{background:radial-gradient(1200px 500px at 85% -10%,#ffe8c2 0,transparent 60%),radial-gradient(900px 500px at -10% 110%,#d4f3f1 0,transparent 60%),var(--sand);padding:64px 0 80px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:.55em;background:#fff;padding:.4em .9em;border-radius:999px;font-weight:600;font-size:.88rem;color:var(--navy);box-shadow:var(--shadow)}
.dot{width:9px;height:9px;border-radius:50%;background:var(--coral);box-shadow:0 0 0 0 rgba(242,121,90,.6);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 10px rgba(242,121,90,0)}100%{box-shadow:0 0 0 0 rgba(242,121,90,0)}}
.grad{background:linear-gradient(90deg,var(--coral),var(--sun) 45%,var(--aqua));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero h1{margin-top:.5em}
.lead{font-size:1.15rem;color:var(--muted);max-width:56ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 36px}
.hero-facts{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.hero-facts li{background:#fff;border-radius:14px;padding:14px 16px;box-shadow:var(--shadow)}
.hero-facts strong{display:block;color:var(--navy);font-size:1.05rem}
.hero-facts span{font-size:.85rem;color:var(--muted);line-height:1.35;display:block}
.scene{width:100%;height:auto;border-radius:32px;box-shadow:0 30px 60px rgba(11,42,60,.18)}
.sun{animation:float 6s ease-in-out infinite}
.rays{transform-origin:400px 120px;animation:spin 40s linear infinite}
@keyframes float{50%{transform:translateY(-6px)}}
@keyframes spin{to{transform:rotate(360deg)}}

/* sections */
.section{padding:96px 0}
.section-dark{background:linear-gradient(160deg,var(--navy) 0,#0f3a52 60%,#0e4f5f 100%);color:#d7e7ee}
.section-dark h2{color:#fff}
.section-sand{background:var(--sand)}
.section-sun{background:linear-gradient(160deg,#fff5e3 0,#ffe7cf 50%,#e5f6f4 100%)}
.kicker{text-transform:uppercase;letter-spacing:.14em;font-size:.8rem;font-weight:800;color:var(--teal);margin-bottom:.8em}
.kicker-light{color:var(--sun2)}
.sub{font-size:1.08rem;color:var(--muted);max-width:62ch}
.sub.light,.light{color:#c7dbe4}
.fine{font-size:.85rem;color:var(--muted)}
.fine.light{color:#9fbccb}

/* steps */
.steps{list-style:none;padding:0;margin:48px 0 0;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:s}
.steps li{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow);position:relative}
.steps p{color:var(--muted);font-size:.95rem;margin:0}
.step-ico,.card-ico{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px;background:linear-gradient(135deg,var(--sun2),var(--coral))}
.step-ico svg,.card-ico svg,.thanks svg{width:24px;height:24px;fill:none;stroke:var(--navy);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.steps li:nth-child(2) .step-ico{background:linear-gradient(135deg,var(--foam),var(--aqua))}
.steps li:nth-child(3) .step-ico{background:linear-gradient(135deg,#bcd6f0,#5fa8d3)}
.steps li:nth-child(4) .step-ico{background:linear-gradient(135deg,var(--sun2),var(--sun))}

/* why now */
.why-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.law-list{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.law-list li{display:grid;grid-template-columns:140px 1fr;gap:16px;align-items:center;background:rgba(255,255,255,.06);border:1px solid rgba(155,231,227,.18);border-radius:14px;padding:16px 18px}
.law-num{font-weight:800;color:var(--sun2);font-size:1.05rem}

/* split + cards */
.split{display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:center}
.split-rev{grid-template-columns:1fr 1.1fr}
.cards{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.card p{color:var(--muted);font-size:.95rem;margin:0}
.sun-bg{background:linear-gradient(135deg,var(--sun2),var(--sun))}
.sea-bg{background:linear-gradient(135deg,var(--foam),var(--aqua))}
.coral-bg{background:linear-gradient(135deg,#ffc2ae,var(--coral))}
.navy-bg{background:linear-gradient(135deg,#bcd6f0,#5fa8d3)}
.resident-art svg{width:100%;filter:drop-shadow(0 20px 40px rgba(11,42,60,.12))}
.checks{list-style:none;padding:0;margin:20px 0 28px;display:grid;gap:10px}
.checks li{position:relative;padding-left:34px}
.checks li::before{content:"";position:absolute;left:0;top:.2em;width:22px;height:22px;border-radius:50%;background:var(--aqua) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12.5l4 4 8-9'/%3E%3C/svg%3E") center/14px no-repeat}

/* calculator */
.calc{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:40px;background:#fff;border:1px solid var(--line);border-radius:24px;padding:28px;box-shadow:var(--shadow)}
.calc-inputs{display:grid;gap:18px}
label{display:grid;gap:6px;font-weight:600;font-size:.93rem;color:var(--navy)}
input[type=text],input[type=email],input[type=number],select,textarea{font:inherit;font-weight:400;padding:.75em .9em;border:1.5px solid #d6cdbf;border-radius:12px;background:#fff;color:var(--ink);width:100%}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--aqua);box-shadow:0 0 0 4px rgba(43,179,177,.18)}
input[type=range]{width:100%;accent-color:var(--coral)}
label output{display:inline-block;margin-left:.4em;color:var(--coral);font-weight:800}
label small{font-weight:400;color:var(--muted);font-size:.82rem}
.calc-results{background:linear-gradient(160deg,var(--navy),#0f4458);border-radius:18px;padding:24px;color:#d7e7ee;display:flex;flex-direction:column;gap:14px}
.res{background:rgba(255,255,255,.07);border-radius:14px;padding:14px 16px}
.res-main{background:linear-gradient(135deg,rgba(255,209,102,.18),rgba(242,121,90,.18));border:1px solid rgba(255,209,102,.35)}
.res-label{display:block;font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:#9fbccb}
.res-val{display:block;font-weight:800;font-size:2.4rem;color:#fff;letter-spacing:-.02em}
.res-val.sm{font-size:1.4rem}
.res-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.assume{font-size:.88rem;color:#c7dbe4}
.assume summary{cursor:pointer;font-weight:700;color:var(--sun2)}
.assume ul{padding-left:1.1em;margin:.6em 0 0}
.assume li{margin-bottom:.4em}

/* batteries */
.battery-art svg{width:100%;max-width:420px;margin:auto}
.charge{animation:charge 3.5s ease-in-out infinite;transform-origin:center bottom;transform-box:fill-box}
@keyframes charge{0%{transform:scaleY(.15)}60%,100%{transform:scaleY(1)}}

/* faq */
.faq{margin-top:28px;display:grid;gap:12px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:4px 20px;box-shadow:0 4px 14px rgba(11,42,60,.05)}
.faq summary{cursor:pointer;font-weight:700;color:var(--navy);padding:14px 28px 14px 0;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:0;top:8px;font-size:1.5rem;color:var(--coral);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{color:var(--muted)}

/* form */
.pilot-form{background:#fff;border-radius:24px;padding:28px;box-shadow:0 20px 50px rgba(11,42,60,.14);display:grid;gap:16px;position:relative}
.role{border:0;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px}
.role legend{font-weight:700;color:var(--navy);margin-bottom:8px;font-size:.93rem}
.role label{display:flex;align-items:center;gap:6px;border:1.5px solid #d6cdbf;padding:.5em .9em;border-radius:999px;cursor:pointer;font-weight:600;font-size:.88rem}
.role label:has(input:checked){border-color:var(--aqua);background:#e8f8f7}
.role input{accent-color:var(--teal)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.opt{font-weight:400;color:var(--muted)}
.form-note{margin:0;text-align:center}
.invalid{border-color:var(--coral)!important}
.thanks{position:absolute;inset:0;background:#fff;border-radius:24px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:30px}
.thanks[hidden]{display:none}
.thanks svg{width:64px;height:64px;stroke:var(--aqua);margin-bottom:12px}

/* footer */
.footer{background:var(--navy);color:#a9c3cf;padding:56px 0 28px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}
.footer h4{color:#fff;margin:0 0 12px;font-size:.95rem}
.footer a:not(.brand){display:block;color:#c7dbe4;text-decoration:none;margin-bottom:6px}
.footer a:hover{color:var(--sun2)}
.footer p{margin-top:14px;max-width:40ch}
.foot-legal{border-top:1px solid rgba(255,255,255,.1);margin-top:36px;padding-top:20px;font-size:.8rem;color:#7f9cab}
.foot-legal p{max-width:none}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* responsive */
@media (max-width:1000px){
  .steps{grid-template-columns:1fr 1fr}
  .hero-grid,.why-grid,.split,.split-rev{grid-template-columns:1fr}
  .hero-art{max-width:560px;margin:0 auto;width:100%}
  .split-rev .resident-art{order:2}
  .calc{grid-template-columns:1fr}
}
@media (max-width:860px){
  .nav-toggle{display:block}
  .nav-links{position:absolute;top:70px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:#fff;padding:8px 20px 20px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);display:none}
  .nav-links.open{display:flex}
  .nav-links a:not(.btn){padding:12px 0;border-bottom:1px solid #f0ebe3}
  .nav-links .btn{margin-top:14px}
}
@media (max-width:620px){
  .section{padding:68px 0}
  .hero{padding:40px 0 56px}
  .hero-facts{grid-template-columns:1fr}
  .steps,.cards,.row2{grid-template-columns:1fr}
  .res-val.sm{font-size:1.2rem}
  .law-list li{grid-template-columns:1fr;gap:4px}
  .foot-grid{grid-template-columns:1fr}
  .calc,.pilot-form{padding:20px}
  .res-val{font-size:2rem}
  .hero-cta .btn{flex:1 1 100%}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}}
.nw{white-space:nowrap}.calc+.fine{margin-top:14px}