/* Installeer Thuisbatterij — fris & zakelijk vakmanschap */
:root{--navy:#0B2A5B;--navy-2:#123B7A;--blue:#2F6BD8;--orange:#FF7A1A;--orange-d:#E5620A;--ink:#14213D;--muted:#5A6B85;--line:#DCE3EE;--grey:#F2F5F9;--white:#fff}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--ink);font:400 18px/1.6 "Source Sans 3",system-ui,sans-serif;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue)}
h1,h2,h3{font-family:"Archivo",system-ui,sans-serif;font-stretch:90%;font-weight:800;letter-spacing:-.01em;line-height:1.08;margin:0;color:var(--navy)}
h2{font-size:clamp(30px,3.6vw,46px);margin-bottom:16px}
h3{font-size:20px;font-weight:700}
p{margin:0 0 1em}
.wrap{width:min(1200px,100% - 40px);margin:0 auto}
.skip{position:absolute;left:-9999px}.skip:focus{left:10px;top:10px;z-index:99;background:#fff;padding:8px}
.label{display:inline-block;font:800 12.5px "Archivo",sans-serif;letter-spacing:.18em;text-transform:uppercase;color:var(--orange)!important;margin:0 0 14px;padding-left:22px;position:relative}
.label::before{content:"";position:absolute;left:0;top:50%;width:14px;height:3px;background:var(--orange);transform:translateY(-50%)}
.label-light{color:#FFB37D!important}.label-light::before{background:#FFB37D}
.muted{color:var(--muted)}.small{font-size:15px;color:var(--muted)}.light-muted{color:#B9C7DF}

.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 26px;border-radius:8px;border:0;font:700 16px "Archivo",sans-serif;text-decoration:none;cursor:pointer;transition:background .2s,transform .2s}
.btn:hover{transform:translateY(-1px)}
.btn-orange{background:var(--orange);color:#fff}.btn-orange:hover{background:var(--orange-d)}
.btn-navy{background:var(--navy);color:#fff}.btn-navy:hover{background:var(--navy-2)}
.btn-line{background:#fff;color:var(--navy);box-shadow:inset 0 0 0 2px var(--navy)}

.topbar{background:var(--navy);color:#C9D6EC;font-size:14px}
.topbar-inner{display:flex;justify-content:space-between;min-height:38px;align-items:center}
.topbar a{color:#fff;font-weight:700;text-decoration:none}
.head{position:sticky;top:0;z-index:40;background:#fff;border-bottom:1px solid var(--line)}
.head-inner{display:flex;align-items:center;justify-content:space-between;min-height:74px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--navy)}
.logo-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:10px;background:var(--grey);color:var(--navy)}
.logo-mark svg{width:30px;height:30px}
.logo-text{font:500 20px "Archivo",sans-serif;font-stretch:88%;letter-spacing:-.01em}
.logo-text b{font-weight:800;color:var(--navy)}
.logo.light .logo-text,.logo.light .logo-text b{color:#fff}
.nav{display:flex;align-items:center;gap:28px}
.nav a{color:var(--ink);text-decoration:none;font-weight:600;font-size:16px}
.nav a:hover{color:var(--orange)}
.nav .nav-btn{background:var(--orange);color:#fff;padding:12px 18px;border-radius:8px}
.nav .nav-btn:hover{background:var(--orange-d);color:#fff}
.menu-btn{display:none;border:2px solid var(--navy);background:#fff;color:var(--navy);border-radius:8px;padding:8px 16px;font:700 15px "Archivo",sans-serif}

.hero{background:linear-gradient(180deg,#F5F8FC,#fff);padding:70px 0 40px;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(40px,5.2vw,68px);margin-bottom:22px}
.hero h1 span{color:var(--orange);display:block}
.intro{font-size:20px;color:var(--muted);max-width:640px}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.check-card{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 30px 60px -36px rgba(11,42,91,.45);overflow:hidden}
.check-head{background:var(--navy);color:#fff;padding:18px 24px}
.check-head span{display:block;font:700 12px "Archivo",sans-serif;letter-spacing:.18em;text-transform:uppercase;color:#FFB37D}
.check-head strong{font:800 22px "Archivo",sans-serif}
.checklist{list-style:none;margin:0;padding:10px 24px}
.checklist li{display:flex;gap:12px;align-items:center;padding:12px 0;border-bottom:1px dashed var(--line);font-weight:600}
.checklist li:last-child{border:0}
.checklist i{flex:none;width:24px;height:24px;border-radius:6px;background:#E8F7EE;position:relative}
.checklist i::after{content:"";position:absolute;left:8px;top:4px;width:6px;height:11px;border:solid #1E9E56;border-width:0 3px 3px 0;transform:rotate(45deg)}
.check-foot{margin:0;padding:14px 24px;background:var(--grey);font-size:15px;color:var(--muted)}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:56px;border:1px solid var(--line);border-radius:12px;background:#fff}
.hero-stats div{padding:20px 24px;border-right:1px solid var(--line)}
.hero-stats div:last-child{border:0}
.hero-stats b{display:block;font:800 34px "Archivo",sans-serif;color:var(--navy)}
.hero-stats span{color:var(--muted);font-size:15px}

.sec{padding:96px 0}
.sec-grey{background:var(--grey)}
.sec-navy{background:var(--navy);color:#fff}
.sec-navy h2,.sec-navy h3{color:#fff}
.sec-head{max-width:700px;margin:0 auto 50px;text-align:center}
.sec-head p{color:var(--muted)}
.sec-head.left{text-align:left;margin:0}

.stepper{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:0;counter-reset:s;position:relative}
.stepper li{position:relative;padding:26px 22px 0}
.stepper li::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--line)}
.stepper li:first-child::before{background:linear-gradient(90deg,var(--orange),var(--line))}
.s-num{display:inline-grid;place-items:center;width:48px;height:48px;border-radius:50%;background:var(--navy);color:#fff;font:800 17px "Archivo",sans-serif;margin:-50px 0 16px;border:5px solid #fff;box-shadow:0 0 0 1px var(--line)}
.stepper li:first-child .s-num{background:var(--orange)}
.stepper h3{margin-bottom:8px}
.stepper p{color:var(--muted);font-size:16px}

.control-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:start}
.control-img{border-radius:12px;margin-top:26px;aspect-ratio:16/10;object-fit:cover;width:100%}
.control-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.control-cards article{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;border-top:4px solid var(--navy)}
.control-cards article:nth-child(odd){border-top-color:var(--orange)}
.ico{display:inline-grid;place-items:center;min-width:42px;height:42px;padding:0 8px;border-radius:10px;background:var(--grey);font:800 18px "Archivo",sans-serif;color:var(--navy);margin-bottom:12px}
.control-cards h3{margin-bottom:6px}
.control-cards p{font-size:16px;color:var(--muted);margin:0}

.diagram-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:center}
.diagram{margin:0;background:var(--grey);border-radius:16px;padding:20px;border:1px solid var(--line)}
.diagram svg{width:100%;height:auto}
.diagram figcaption{font-size:14px;color:var(--muted);text-align:center;margin-top:6px}
.legend{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:10px;font-weight:600}
.legend li{display:flex;gap:10px;align-items:center}
.legend i{width:28px;height:4px;border-radius:4px}
.l1{background:var(--orange)}.l2{background:var(--blue)}.l3{background:var(--navy)}

.day-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px;align-items:start}
.dayline{list-style:none;margin:0;padding:0;border-left:2px solid rgba(255,255,255,.18)}
.dayline li{display:grid;grid-template-columns:90px 1fr;gap:18px;padding:0 0 26px 26px;position:relative}
.dayline li::before{content:"";position:absolute;left:-8px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--orange);box-shadow:0 0 0 5px rgba(255,122,26,.2)}
.dayline time{font:800 20px "Archivo",sans-serif;color:#FFB37D}
.dayline h3{margin-bottom:4px}
.dayline p{color:#B9C7DF;font-size:16px;margin:0}

.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.prod-mini{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:24px 0 14px}
.prod-mini img{background:var(--grey);border-radius:12px;aspect-ratio:4/3;object-fit:contain;width:100%;border:1px solid var(--line)}
.calc{background:#fff;border:1px solid var(--line);border-radius:14px;padding:30px;display:grid;gap:18px;box-shadow:0 30px 60px -40px rgba(11,42,91,.5)}
.calc-title,.form-title{font:800 22px "Archivo",sans-serif;color:var(--navy);padding-bottom:12px;border-bottom:1px solid var(--line)}
label{display:block;font-weight:700;color:var(--navy);font-size:16px}
.calc label span{float:right;font-weight:600;color:var(--muted);font-size:14px}
input,select,textarea{width:100%;margin-top:6px;padding:13px 14px;border:1.5px solid var(--line);border-radius:8px;font:inherit;font-size:16px;color:var(--ink);background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid var(--blue);outline-offset:1px;border-color:var(--blue)}
input[type=range]{padding:0;border:0;accent-color:var(--orange)}
.calc-out{background:var(--grey);border-left:4px solid var(--orange);border-radius:8px;padding:18px 20px}
.calc-out span{font:700 12px "Archivo",sans-serif;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.calc-out strong{display:block;font:800 30px "Archivo",sans-serif;color:var(--navy);margin:4px 0 6px}
.calc-out p{font-size:16px;color:var(--muted)}
.calc-out ul{margin:0 0 12px;padding-left:20px;font-weight:700;color:var(--navy)}
.calc-out a{font-weight:700;color:var(--orange-d);text-decoration:none}

.faq-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:56px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:10px;margin-bottom:10px}
.faq summary{list-style:none;cursor:pointer;padding:20px 54px 20px 22px;font:700 18px "Archivo",sans-serif;color:var(--navy);position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:22px;top:50%;width:10px;height:10px;border:solid var(--orange);border-width:0 3px 3px 0;transform:translateY(-70%) rotate(45deg);transition:transform .2s}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq details p{padding:0 22px 20px;margin:0;color:var(--muted);font-size:16px}

.form-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:56px;align-items:start}
.ticks{list-style:none;padding:0;margin:18px 0 26px;display:grid;gap:10px;font-weight:600}
.ticks li{padding-left:30px;position:relative}
.ticks li::before{content:"✓";position:absolute;left:0;top:0;width:22px;height:22px;border-radius:50%;background:var(--orange);color:#fff;font-size:13px;display:grid;place-items:center}
.cb{background:var(--grey);border:1px solid var(--line);border-radius:12px;padding:22px}
.cb strong{display:block;font:800 19px "Archivo",sans-serif;color:var(--navy);margin-bottom:10px}
.cb-form{display:grid;gap:10px}.cb-form input,.cb-form select{margin:0}
.lead-form{background:#fff;border:1px solid var(--line);border-top:5px solid var(--orange);border-radius:12px;padding:30px;display:grid;gap:16px;box-shadow:0 30px 60px -40px rgba(11,42,91,.5)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.check{display:flex!important;gap:10px;align-items:flex-start;font-weight:500!important;font-size:14px!important;color:var(--muted)!important;line-height:1.5}
.check input{width:20px;height:20px;margin:1px 0 0;flex:none;accent-color:var(--orange)}
.calc-box{background:var(--grey);border-radius:8px;padding:12px 14px;font-size:14px}
.calc-box strong{display:block;color:var(--navy)}
.hp{position:absolute;left:-9999px}
.form-msg{margin:0;padding:12px 14px;border-radius:8px;font-weight:700;font-size:15px}
.form-msg.is-ok{background:#E8F7EE;color:#14663A}.form-msg.is-err{background:#FDECE4;color:#9A3412}

.foot{background:#071C3D;color:#AEBBD3;padding:56px 0 26px;font-size:15px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
.foot h3{font:700 12.5px "Archivo",sans-serif;letter-spacing:.16em;text-transform:uppercase;color:#FFB37D;margin-bottom:12px}
.foot a{color:#fff;text-decoration:none}
.foot-bottom{display:flex;justify-content:space-between;margin-top:36px;padding-top:18px;border-top:1px solid rgba(255,255,255,.1);font-size:14px}
.mobile-cta{display:none}

[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
[data-reveal].is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){[data-reveal]{opacity:1;transform:none;transition:none}}

@media (max-width:1000px){
  .hero-grid,.control-grid,.diagram-grid,.day-grid,.calc-grid,.faq-grid,.form-grid{grid-template-columns:1fr;gap:40px}
  .stepper{grid-template-columns:1fr;gap:18px}
  .stepper li{padding:0 0 0 70px}
  .stepper li::before{top:0;bottom:-18px;left:23px;right:auto;width:3px;height:auto}
  .s-num{position:absolute;left:0;top:0;margin:0}
  .hero-stats{grid-template-columns:1fr 1fr}
  .hero-stats div:nth-child(2){border-right:0}
  .hero-stats div:nth-child(-n+2){border-bottom:1px solid var(--line)}
}
@media (max-width:760px){
  body{font-size:17px}
  .topbar span{display:none}.topbar-inner{justify-content:center}
  .menu-btn{display:block}
  .nav{position:absolute;top:74px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 18px;border-bottom:1px solid var(--line);display:none}
  .nav.is-open{display:flex}
  .nav a{padding:13px 0;border-bottom:1px solid var(--line)}
  .nav .nav-btn{text-align:center;margin-top:12px}
  .sec{padding:64px 0}
  .control-cards,.row{grid-template-columns:1fr}
  .dayline li{grid-template-columns:1fr;gap:2px}
  .calc,.lead-form{padding:22px}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column;gap:8px}
  .mobile-cta{display:flex;position:fixed;bottom:12px;left:12px;width:calc(42% - 18px);z-index:60;min-height:52px;align-items:center;justify-content:center;border-radius:10px;background:var(--navy);color:#fff;font:700 15px "Archivo",sans-serif;text-decoration:none;box-shadow:0 12px 28px -10px rgba(0,0,0,.45)}
  .mobile-cta-2{left:auto;right:12px;width:calc(58% - 18px);background:var(--orange)}
  body{padding-bottom:76px}
}