*{box-sizing:border-box}body{margin:0;background:#f1f5f9;color:#0b234a;font:17px/1.5 system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}.shell{max-width:590px;background:white;margin:28px auto;border-radius:26px;box-shadow:0 12px 40px #19375d10;overflow:hidden}header{display:flex;align-items:center;justify-content:space-between;padding:15px 26px;border-bottom:1px solid #e2e8f0}header img{width:125px;height:73px;object-fit:contain}.home{font-size:14px;color:#486080;text-decoration:none}main{padding:28px}h1{font-size:34px;line-height:1.17;letter-spacing:-1px;margin:6px 0 12px}h2,legend{font-size:21px;font-weight:750;margin:18px 0 12px}.subtitle{color:#60708b;font-size:20px;margin:0}.steps{display:flex;list-style:none;padding:0;justify-content:space-between;margin:28px 0;color:#7a879b}.steps li{display:grid;justify-items:center;gap:7px;font-size:15px;position:relative;flex:1}.steps li:not(:last-child):after{content:'';position:absolute;top:20px;left:70%;width:60%;height:3px;background:#e4e9f0}.steps b{display:grid;place-items:center;width:43px;height:43px;border-radius:50%;background:#eef1f5;font-size:22px}.steps .active{color:#076dc9}.steps .active b{background:#0875d5;color:white}svg{width:100%;height:auto;margin:0 0 20px}fieldset{border:0;padding:0;margin:18px 0}label{display:block;color:#344b70;font-size:16px;margin:16px 0}input[type=number],select{width:100%;font:inherit;color:#0b234a;border:1px solid #c9d3e1;border-radius:10px;padding:12px;background:#fbfcff;margin-top:7px;min-height:49px}select{font-size:16px}.dimensions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.dimensions label{margin:4px 0}.unitlabel{font-size:12px}.units{display:flex;background:#f2f5f9;border:1px solid #d1dae7;border-radius:11px;overflow:hidden}.units label{flex:1;margin:0}.units span{display:block;text-align:center;padding:8px}.units input,.choices input{position:absolute;opacity:0;width:1px;height:1px}.units input:checked+span{background:#0875d5;color:#fff;font-weight:700}.choices{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.choices label{margin:0}.choices span{display:block;border:1px solid #d5deea;border-radius:12px;text-align:center;padding:12px;line-height:1.7}.choices input:checked+span{border-color:#0780f3;background:#eff8ff;color:#065fae;box-shadow:0 0 0 1px #0780f3}.primary,.secondary{display:block;width:100%;text-align:center;font:700 19px/1.3 system-ui;border-radius:13px;padding:18px 12px;cursor:pointer;text-decoration:none;margin-top:18px}.primary{background:#0875d5;color:white;border:0}.primary:hover{background:#0563b6}.secondary{background:white;border:1px solid #b6c5d8;color:#0b234a}.hint{font-size:14px;color:#64758d}.center{text-align:center}.result-box{background:linear-gradient(135deg,#edf6ff,#f5faff);padding:25px 18px;border-radius:16px;text-align:center;margin:18px 0}.result-box strong{font-size:clamp(30px,7vw,48px);line-height:1.2;letter-spacing:-1.3px}.result-box h2{margin:8px 0}.result-box p{font-size:15px;color:#536888;margin:9px 0}.pill{display:inline-block;background:#e4f3ff;border-radius:20px;padding:5px 14px;font-size:14px;color:#28669b}.summary{border:1px solid #dbe3ef;border-radius:16px;padding:0 20px}.summary dl{margin:0 0 10px}.summary dl div{display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid #edf0f6;padding:11px 0;font-size:15px}.summary dd{margin:0;text-align:right;font-weight:650}.summary dt{color:#667891}.note{font-size:15px;background:#f5f8fc;border-radius:12px;padding:14px}.whatsapp{background:#009e93}.whatsapp:hover{background:#00867e}details{font-size:14px;color:#526885;margin-top:22px}summary{cursor:pointer;font-weight:700;font-size:16px}footer{padding:24px;text-align:center;background:#f8fafc;font-size:13px;color:#63738a}a{color:#076bc0}#error{color:#a32020;font-weight:650}input:focus-visible,select:focus-visible,button:focus-visible,a:focus-visible,input:focus-visible+span{outline:3px solid #ffba42;outline-offset:3px}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}[hidden]{display:none!important}@media(max-width:620px){body{background:white}.shell{margin:0;border-radius:0;box-shadow:none}main{padding:24px 21px}header{padding:10px 21px}h1{font-size:32px}.home{font-size:12px}.dimensions{gap:9px}.dimensions label{font-size:14px}.dimensions input{padding:11px}.primary,.secondary{font-size:18px}}

/* Expand to the available device width; preserve the mobile reading order. */
.shell{width:calc(100% - 48px);max-width:1120px}
.measurement-panel,.room-panel{min-width:0}
@media(min-width:800px){
 header{padding:18px 40px}main{padding:32px 40px 40px}
 #intro h1{font-size:40px}#intro h1 br{display:none}
 .steps{max-width:700px;margin:28px auto 36px}
 #step1{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:40px;align-items:start}
 #step1 fieldset:first-child{margin-top:0}
 .room-panel{background:#f8fafc;border:1px solid #e2e8f0;border-radius:18px;padding:24px}
 .room-panel legend{margin-top:0}
 #step1 svg{display:block;max-width:460px;margin:0 auto 20px}
 #step2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 28px}
 #step2>h2,#step2>.hint{grid-column:1/-1;margin-top:0}
 #step2 label{margin:12px 0}
 #step2 .primary{grid-column:2;grid-row:6}
 #step2 .secondary{grid-column:1;grid-row:6}
 #result{max-width:800px;margin:0 auto}
}
@media(min-width:621px) and (max-width:799px){.shell{max-width:720px}main{padding:32px}}
@media(max-width:620px){.shell{width:100%;max-width:none}.room-panel{margin-top:18px}}