:root{
  --orange:#FF7A00;
  --yellow:#FFD500;
  --blue:#00A3FF;
  --green:#6DD400;
  --pink:#FF4DA6;
  --purple:#7A4DFF;
  --bg:#fafafa;
  --ink:#1c1c1c;
  --card:#ffffff;
  --line:#e9e9e9;
  --shadow: 0 10px 30px rgba(0,0,0,.08);
  --radius: 18px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 20% 0%, rgba(255,122,0,.10), transparent 60%),
              radial-gradient(900px 500px at 90% 10%, rgba(0,163,255,.10), transparent 55%),
              radial-gradient(900px 500px at 50% 110%, rgba(255,77,166,.08), transparent 60%),
              var(--bg);
  color:var(--ink);
}

.page{padding:18px; max-width: 980px; margin:0 auto 40px auto;}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding:18px;
}

.topbar{
  position:sticky;
  top:0;
  z-index:20;
  display:flex;
  gap:12px;
  align-items:center;
  justify-content:space-between;
  padding:12px 14px;
  background: rgba(250,250,250,.85);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--line);
}
.topbar-right{display:flex; gap:10px; align-items:center;}

.brand{display:flex; align-items:center; gap:10px; min-width: 0;}
.brand-logo{height:42px; width:auto; border-radius:10px; border:1px solid var(--line); background:#fff}
.brand-text{min-width:0}
.brand-title{font-weight:800; letter-spacing:.2px; line-height:1.1}
.brand-sub{font-size:12px; opacity:.8}

h1{margin:8px 0 10px 0}
.subtitle{margin:0 0 14px 0; opacity:.85}

.level-title{margin:4px 0 6px 0}
.level-sub{margin:0 0 14px 0; opacity:.9}

.btn{
  appearance:none;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink);
  padding:10px 12px;
  border-radius: 12px;
  cursor:pointer;
  font-weight:700;
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  user-select:none;
}
.btn:hover{transform: translateY(-1px)}
.btn:active{transform: translateY(0)}
.btn.primary{
  border-color: transparent;
  background: linear-gradient(135deg, var(--orange), var(--pink));
  color:#fff;
}
.btn.ghost{background: transparent}
.btn.help{border-color: rgba(255,122,0,.25);}

.btn.big{
  padding:14px 14px;
  font-size:16px;
}

.grid{
  display:grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap:12px;
  margin-top: 14px;
}
@media (max-width:640px){
  .grid{grid-template-columns:1fr}
}

.instructions{
  margin-top:16px;
  padding-top:12px;
  border-top:1px dashed var(--line);
}
.instructions h2{margin:0 0 8px 0; font-size:16px}
.instructions ul{margin:0; padding-left:18px; opacity:.9}

.footer{margin-top:14px; display:flex; justify-content:center}
.footer-logo{height:52px; width:auto; opacity:.8}

.media-wrap{display:flex; justify-content:center}
.scene{
  width:100%;
  max-width: 560px;
  border-radius: 16px;
  border:1px solid var(--line);
  background:#fff;
}

.choices{
  display:grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap:10px;
  margin-top: 14px;
}
@media (max-width:640px){
  .choices{grid-template-columns:1fr}
}

.status{
  margin-top: 12px;
  padding:10px 12px;
  border-radius: 12px;
  border:1px dashed var(--line);
  min-height: 44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.status .tag{font-weight:800}
.tag.ok{color: #0b7a2c}
.tag.no{color: #b00020}

.navrow{
  margin-top: 14px;
  display:flex;
  gap:10px;
  justify-content:space-between;
  flex-wrap:wrap;
}

.overlay{
  position:fixed;
  inset:0;
  display:none;
  align-items:center;
  justify-content:center;
  padding:18px;
  background: rgba(0,0,0,.25);
}
.overlay[aria-hidden="false"]{display:flex}
.overlay-card{
  width:min(760px, 100%);
  background:#fff;
  border-radius: 18px;
  border:1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 14px;
  position:relative;
}
.overlay-close{position:absolute; right:12px; top:12px}
.overlay-body{
  display:flex;
  gap:14px;
  align-items:center;
}
.helper{
  width: 180px;
  max-width: 36vw;
  border-radius: 16px;
  border:1px solid var(--line);
  background:#fff;
}

.audio-box{
  display:flex;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:10px;
  padding: 10px 0;
}
.audio-hint{opacity:.8}

.seq-wrap{display:flex; flex-direction:column; gap:10px;}
.seq{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:10px;
}
.slot{
  border:2px dashed rgba(0,0,0,.15);
  border-radius: 16px;
  min-height: 120px;
  background: rgba(255,255,255,.6);
  display:flex;
  align-items:center;
  justify-content:center;
  position:relative;
  overflow:hidden;
}
.slot-label{
  position:absolute;
  left:10px; top:10px;
  font-weight:900;
  opacity:.55;
}
.seq-actions{display:flex; gap:10px; flex-wrap:wrap}

.deck{
  margin-top: 14px;
  display:grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap:10px;
}
@media (max-width:760px){
  .deck{grid-template-columns: repeat(2, minmax(0, 1fr));}
}
.card-item{
  border:1px solid var(--line);
  border-radius: 16px;
  overflow:hidden;
  background:#fff;
  cursor:grab;
  user-select:none;
}
.card-item:active{cursor:grabbing}
.card-item img{width:100%; height:140px; object-fit:cover; display:block;}
.card-item .cap{padding:8px 10px; font-weight:800; font-size:13px; opacity:.9}

.kids{display:flex; justify-content:space-between; margin-top: 10px;}
.kid{width:110px; height:auto; opacity:.95}

.draw-wrap{display:grid; grid-template-columns: 1fr 1.2fr; gap:12px; align-items:start;}
@media (max-width:760px){
  .draw-wrap{grid-template-columns:1fr}
}
.mi-board-img{
  width:100%;
  border-radius: 16px;
  border:1px solid var(--line);
  background:#fff;
}
.canvas-wrap{
  border-radius: 16px;
  border:1px solid var(--line);
  overflow:hidden;
  background: #fff;
}
canvas{width:100%; height:auto; display:block; background: #fff; touch-action:none;}

.tools{
  margin-top: 12px;
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
}
.tool-group{display:flex; gap:10px; flex-wrap:wrap; align-items:center;}
.palette .swatch{
  width:34px; height:34px;
  border-radius: 10px;
  border:1px solid rgba(0,0,0,.15);
  cursor:pointer;
}
.range{display:flex; gap:10px; align-items:center; font-weight:800}
.range input{width:160px}