:root{
  --bg:#ffffff; --ink:#0d1526; --muted:#59637a; --line:#e7eaf1; --soft:#f5f7fb;
  --accent:#e85d1f; --accent-dark:#c74e15; --radius:18px; --max:760px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3,.brand,.card-title{font-family:'Sora',sans-serif}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

.demo-banner{background:var(--ink);color:#dbe2f0;text-align:center;padding:10px 16px;font-size:.9rem}
.demo-banner strong{color:#ffab7a}

.top{max-width:var(--max);margin:0 auto;padding:20px 20px 0;display:flex;justify-content:space-between;align-items:center;gap:12px}
.brand{font-weight:800;font-size:1.1rem;text-decoration:none;color:var(--ink);letter-spacing:-.02em}
.top-tag{font-size:.82rem;font-weight:600;color:var(--accent);border:1px solid #ffd9c4;background:#fff4ec;padding:5px 12px;border-radius:999px;white-space:nowrap}

.wrap{max-width:var(--max);margin:0 auto;padding:10px 20px 40px}
.intro{padding:28px 0 6px}
.intro h1{font-size:clamp(1.7rem,5.5vw,2.5rem);letter-spacing:-.025em;line-height:1.15}
.intro p{color:var(--muted);margin-top:12px;max-width:580px}

.panel{border:1px solid var(--line);border-radius:var(--radius);padding:26px;background:#fff;margin-top:20px}
.panel h2{font-size:1.3rem;letter-spacing:-.01em;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.step-no{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;flex:0 0 28px;border-radius:50%;background:var(--ink);color:#fff;font-size:.9rem;font-weight:700}
.hint{color:var(--muted);font-size:.95rem;margin-bottom:16px}
.error{color:#b3261e;font-weight:600;font-size:.92rem;margin:12px 0 0}

/* Choice cards */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.cards-3{grid-template-columns:repeat(3,1fr)}
.card{position:relative;display:block;border:2px solid var(--line);border-radius:14px;padding:16px;cursor:pointer;transition:border-color .15s ease,background .15s ease}
.card:hover{border-color:#ccd3e0}
.card input{position:absolute;opacity:0;pointer-events:none}
.card-title{display:block;font-weight:700;font-size:1.02rem}
.card-sub{display:block;color:var(--muted);font-size:.85rem;margin-top:3px}
.card:has(input:checked){border-color:var(--accent);background:#fff7f2}
.card:has(input:focus-visible){outline:3px solid var(--accent);outline-offset:2px}

/* Size control */
.size-row{display:flex;align-items:center;justify-content:center;gap:18px;margin:6px 0 14px}
.step-btn{width:52px;height:52px;flex:0 0 52px;border-radius:14px;border:1px solid var(--line);background:#fff;font-size:1.5rem;font-weight:600;cursor:pointer;color:var(--ink);line-height:1}
.step-btn:active{background:var(--soft)}
.size-read{font-family:'Sora',sans-serif;font-weight:800;font-size:2.4rem;letter-spacing:-.02em;min-width:130px;text-align:center}
.size-unit{font-size:1.2rem;color:var(--muted);font-weight:600}
input[type="range"]{width:100%;height:44px;accent-color:var(--accent);cursor:pointer}
.size-scale{display:flex;justify-content:space-between;color:var(--muted);font-size:.85rem;font-weight:500}

/* Extras */
.extras{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.extras[hidden]{display:none}
.extra{display:flex;align-items:center;gap:12px;border:2px solid var(--line);border-radius:14px;padding:14px 16px;cursor:pointer;transition:border-color .15s ease,background .15s ease;min-height:56px}
.extra:hover{border-color:#ccd3e0}
.extra input{width:24px;height:24px;flex:0 0 24px;accent-color:var(--accent);cursor:pointer}
.extra:has(input:checked){border-color:var(--accent);background:#fff7f2}
.extra-body{display:flex;flex-direction:column}
.extra-name{font-weight:600;font-size:.98rem}
.extra-price{color:var(--muted);font-size:.85rem}

/* Result */
.result{background:var(--ink);color:#fff;border-radius:var(--radius);padding:30px 26px;margin-top:20px}
.result h2{font-size:1.05rem;font-weight:600;color:#aeb9cf;letter-spacing:.02em}
.result-range{font-family:'Sora',sans-serif;font-weight:800;font-size:clamp(2rem,7vw,3rem);letter-spacing:-.02em;margin:8px 0 16px;color:#fff}
.result-range .cur{color:#ffab7a}
.breakdown{list-style:none;border-top:1px solid #26314a;padding-top:14px}
.breakdown li{display:flex;justify-content:space-between;gap:14px;padding:5px 0;font-size:.97rem;color:#dbe2f0}
.breakdown li span:last-child{font-weight:600;color:#fff;white-space:nowrap}
.result-note{margin-top:16px;font-size:.88rem;color:#aeb9cf;border-top:1px solid #26314a;padding-top:14px}

/* Lead form */
.fields{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:block}
.field span{display:block;font-weight:600;font-size:.9rem;margin-bottom:6px}
.field input{width:100%;font:inherit;font-size:1rem;padding:13px 14px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);min-height:50px}
.field input:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:transparent}
.cta{display:block;width:100%;margin-top:18px;background:var(--accent);color:#fff;border:none;border-radius:14px;padding:16px 20px;font:inherit;font-family:'Sora',sans-serif;font-weight:700;font-size:1.05rem;cursor:pointer;min-height:56px}
.cta:hover{background:var(--accent-dark)}
.success{margin-top:20px;border:2px solid #bfe3cd;background:#f2fbf5;border-radius:14px;padding:20px}
.success h3{font-size:1.1rem;margin-bottom:8px}
.success p{color:#33405c;font-size:.97rem}
.success-note{margin-top:10px;font-weight:600;color:var(--ink)}

/* Owner strip */
.owner-strip{margin-top:26px;border:1px solid #ffd9c4;background:#fff4ec;border-radius:var(--radius);padding:24px 26px}
.owner-strip p{max-width:600px}
.owner-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px}
.owner-links a{display:inline-block;padding:12px 18px;border-radius:12px;font-weight:600;text-decoration:none;min-height:48px}
.owner-links a:first-child{background:var(--ink);color:#fff}
.owner-links a:last-child{background:#fff;color:var(--ink);border:1px solid var(--line)}

.foot{margin-top:26px;color:var(--muted);font-size:.85rem;text-align:center}
.foot a{color:var(--accent);font-weight:600;text-decoration:none}

@media (max-width:560px){
  .cards-3{grid-template-columns:1fr}
  .extras{grid-template-columns:1fr}
  .fields{grid-template-columns:1fr}
  .panel{padding:20px}
  .result{padding:24px 20px}
  .size-read{font-size:2rem;min-width:104px}
}