#heat-builder * { box-sizing: border-box; }
.hb-wrap { font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; color: #111827; }
.hb-card { background: #fff; border: 1px solid #e5e7eb; border-radius: 16px; padding: 16px; margin: 12px 0; }
.hb-title { font-weight: 700; font-size: 20px; margin-bottom: 8px; }
.hb-row { display: grid; grid-template-columns: 1fr; gap: 8px; margin: 8px 0; }
@media (min-width: 768px){ .hb-row{ grid-template-columns: 1fr 1fr; } }
.hb-label { font-size: 14px; color: #374151; }
.hb-hint { font-size: 12px; color: #6b7280; margin-top: 4px; }
.hb-input, .hb-select { width: 100%; padding: 10px 12px; border: 1px solid #d1d5db; border-radius: 10px; outline: none; }
.hb-input:focus, .hb-select:focus { border-color: #4f46e5; box-shadow: 0 0 0 3px rgb(79 70 229 / 20%); }
.hb-chip { display:inline-block; padding:6px 10px; border:1px solid #e5e7eb; border-radius:999px; margin:6px 6px 0 0; cursor:pointer; }
.hb-chip.active { background:#4f46e5; color:white; border-color:#4f46e5; }
.hb-btn { padding:10px 14px; border-radius:12px; border:1px solid #e5e7eb; background:#fff; cursor:pointer; }
.hb-btn.primary { background:#4f46e5; color:#fff; border-color:#4f46e5; }
.hb-grid { display:grid; gap:12px; grid-template-columns:1fr; }
@media (min-width:768px){ .hb-grid{ grid-template-columns:1fr 1fr; } }
.hb-badge { display:inline-block; font-size:12px; padding:3px 8px; border-radius:999px; background:#eef2ff; color:#3730a3; }
.hb-muted { color:#6b7280; font-size:12px; }
.hb-list { display:grid; gap:12px; grid-template-columns:1fr; }
@media (min-width:900px){ .hb-list{ grid-template-columns:1fr 1fr; } }
.hb-item { border:1px solid #e5e7eb; border-radius:12px; padding:12px; }
.hb-price { font-weight:700; }
.hb-alert { background:#eef2ff; color:#1e1b4b; padding:10px 12px; border-radius:10px; font-size:14px; }