:root{
  --primary:#0b6bcb;
  --accent:#00b7ff;
  --text:#111827;
  --muted:#6b7280;
  --bg:#f5f7fb;
  --white:#ffffff;
  --border:#e5e7eb;
  --shadow: 0 14px 35px rgba(15,23,42,.08);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:var(--bg)}
a{text-decoration:none;color:inherit}
.container{width:92%;max-width:1120px;margin:0 auto}
/* Header */
.header{background:var(--white);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0;gap:12px}
.brand{display:flex;align-items:center;gap:10px}
.mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--accent))}
.brand .name{font-weight:800;letter-spacing:.03em;color:var(--primary);font-size:1.05rem}
.nav{display:flex;align-items:center;gap:16px}
.nav a{font-size:.95rem;color:var(--muted)}
.nav a:hover{color:var(--primary)}
.nav .cta{background:var(--primary);color:#fff;padding:8px 14px;border-radius:999px;font-weight:600}
.nav-toggle{display:none;border:0;background:none;font-size:1.5rem;color:var(--primary)}

/* Hero */
.hero{background:radial-gradient(circle at top,#fff,#e8f0fb);padding:40px 0 30px}
.hero-inner{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:28px;align-items:center}
.badge{display:inline-flex;align-items:center;gap:8px;font-size:.8rem;color:var(--primary);background:#e7f1fb;padding:5px 10px;border-radius:999px;margin-bottom:10px}
.dot{width:7px;height:7px;border-radius:999px;background:var(--primary)}
.hero h1{margin:0 0 10px;font-size:2.15rem}
.hero p{margin:0 0 16px;color:var(--muted);max-width:30rem}
.actions{display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 16px;border-radius:999px;font-weight:600;font-size:.95rem;border:1px solid transparent;cursor:pointer}
.btn.primary{background:var(--primary);color:#fff}
.btn.outline{background:#fff;border-color:var(--border);color:var(--text)}
.meta{margin-top:14px;color:var(--muted);font-size:.82rem;display:flex;gap:14px;flex-wrap:wrap}

/* Cards */
.section{padding:26px 0}
.section h2{margin:0 0 6px;font-size:1.15rem}
.section .sub{margin:0 0 14px;color:var(--muted);font-size:.92rem}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.card{background:var(--white);border:1px solid var(--border);border-radius:12px;padding:14px;box-shadow:var(--shadow)}
.card h3{margin:0 0 6px;font-size:.98rem}
.card p{margin:0;color:var(--muted);font-size:.86rem}

/* Templates */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.tcard{background:var(--white);border:1px solid var(--border);border-radius:14px;overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.visual{height:120px;background:linear-gradient(135deg,#dbeafe,#f9fafb)}
.tbody{padding:12px 14px 14px}
.tbody h3{margin:0 0 4px;font-size:1rem}
.row{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:.8rem;margin:8px 0}
.row strong{color:var(--text)}
.tactions{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:6px}
.small{font-size:.8rem;color:var(--muted)}

/* Page */
.page{padding:22px 0}
.crumb{color:var(--muted);font-size:.82rem;margin-bottom:6px}
.title{margin:0 0 6px;font-size:1.35rem}
.intro{margin:0 0 14px;color:var(--muted)}

/* Builder */
.builder{display:grid;grid-template-columns:minmax(0,330px) minmax(0,1fr);gap:18px}
.panel{background:var(--white);border:1px solid var(--border);border-radius:14px;padding:14px;box-shadow:var(--shadow)}
.group{margin-bottom:10px}
label{display:block;font-size:.8rem;color:var(--muted);margin-bottom:4px}
input,select,textarea{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:10px;font-size:.92rem}
textarea{resize:vertical}
.inline3{display:flex;gap:6px}
.inline3 input{width:100%}
.preview{min-height:260px;border:1px dashed #c7d2fe;background:#eff6ff;border-radius:12px;height:220px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:.88rem;margin-bottom:12px}
.summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:10px;font-size:.82rem}
.summary span:first-child{color:var(--muted)}
.summary span:last-child{font-weight:700}
.price{font-size:1.2rem;font-weight:800;color:var(--primary);margin-top:10px}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.chip{border:1px solid var(--border);background:#f9fafb;color:var(--muted);border-radius:999px;padding:4px 8px;font-size:.78rem}

/* Footer */
.footer{background:var(--white);border-top:1px solid var(--border);margin-top:24px}
.footer-inner{padding:18px 0;color:var(--muted);font-size:.82rem;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* Responsive */
@media(max-width:900px){
  .hero-inner{grid-template-columns:1fr}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .builder{grid-template-columns:1fr}
}
@media(max-width:640px){
  .nav{display:none;position:absolute;left:4%;right:4%;top:60px;background:#fff;border:1px solid var(--border);border-radius:12px;padding:10px 12px;flex-direction:column;align-items:flex-start}
  .nav-toggle{display:block}
  .grid-4,.grid-3{grid-template-columns:1fr}
}

/* 3D Preview */
#previewWrap{position:relative;padding:0;overflow:hidden;min-height:280px}
#preview3d{width:100%;height:100%;display:block}

/* Builder placement rows */
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px;align-items:end}
#preview3d{cursor:grab;touch-action:none}
#preview3d:active{cursor:grabbing}

/* Builder pro lists */
.listBox{display:flex;flex-direction:column;gap:10px;margin-top:10px}
.itemCard{border:1px solid rgba(147,197,253,.35);background:rgba(255,255,255,.04);padding:10px;border-radius:12px}
.itemRow{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:10px;align-items:end}
.itemRow2{display:grid;grid-template-columns:1fr 1fr;gap:10px;align-items:end;margin-top:8px}
.itemActions{display:flex;justify-content:flex-end;margin-top:8px}
.itemActions .btn{padding:8px 10px}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;opacity:.85}
.badgeDot{width:8px;height:8px;border-radius:999px;background:#22c55e;display:inline-block}