Schematic Hotspot

.schem-stage-wrap {
  background: #f4f3ee;
  padding: 32px 24px;
  background-image:
    linear-gradient(rgba(28, 35, 48, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(28, 35, 48, 0.06) 1px, transparent 1px);
  background-size: 24px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Inter', system-ui, sans-serif;
  color: #1c2330;
  /* Force full width of the stage. .cf-stage uses align-items: center
     which collapses children to their content-min-width when they
     don't declare an explicit width. Without this, .schem-paper's
     width: 100% resolves against a collapsed parent and produces the
     tiny-square + content-overflow we saw. */
  width: 100%;
  box-sizing: border-box;
}
.schem-paper {
  position: relative;
  width: 100%;
  max-width: 760px;
  aspect-ratio: 16 / 10;
  background: #fbfaf6;
  border: 1px solid rgba(28, 35, 48, 0.2);
  overflow: visible;
}
.schem-paper::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(28, 35, 48, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(28, 35, 48, 0.05) 1px, transparent 1px);
  background-size: 18px 18px;
  pointer-events: none;
}
.schem-meta {
  position: absolute;
  top: 12px;
  left: 16px;
  right: 16px;
  display: flex;
  justify-content: space-between;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 9.5px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(28, 35, 48, 0.55);
  z-index: 2;
}
.schem-right { text-align: right; line-height: 1.6; }
.schem-corner {
  position: absolute;
  width: 12px; height: 12px;
  border: 1px solid rgba(28, 35, 48, 0.4);
}
.schem-tl { top: 6px; left: 6px; border-right: none; border-bottom: none; }
.schem-tr { top: 6px; right: 6px; border-left: none; border-bottom: none; }
.schem-bl { bottom: 6px; left: 6px; border-right: none; border-top: none; }
.schem-br { bottom: 6px; right: 6px; border-left: none; border-top: none; }
.schem-object {
  position: absolute;
  inset: 50px 60px 50px 60px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.schem-svg { width: 100%; height: 100%; overflow: visible; }
.schem-hot {
  position: absolute;
  width: 16px; height: 16px;
  margin: -8px;
  border-radius: 50%;
  cursor: help;
  z-index: 5;
}
.schem-hot::before {
  content: '';
  position: absolute;
  inset: 5px;
  background: #c1422c;
  border-radius: 50%;
}
.schem-hot::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid #c1422c;
  border-radius: 50%;
  animation: schem-pulse 2.4s ease-out infinite;
}
@keyframes schem-pulse {
  0%   { transform: scale(0.6); opacity: 0.8; }
  100% { transform: scale(2);   opacity: 0;   }
}
.schem-hot-1 { top: 56%; left: 56.25%; }
.schem-hot-2 { top: 25%; left: 32.5%; }
.schem-hot-3 { top: 30%; left: 47.5%; }
.schem-hot-4 { top: 56%; left: 22.5%; }
/* Leader lines hidden — they were stylish but only worked with the
   original off-paper annotation positions. Now that notes are clamped
   to the paper's four corners (so .cf-stage doesn't clip them), drawing
   a line from each hotspot to its corner would require per-hotspot
   trig that's not worth the complexity. Keeping the SVG markup in
   place so the adjacent-sibling selector chain
   (.schem-hot:hover + .schem-leader + .schem-note) still resolves. */
.schem-leader { display: none; }
.schem-note {
  position: absolute;
  width: 190px;
  background: #fbfaf6;
  border: 1px solid #1c2330;
  padding: 11px 13px;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 10.5px;
  line-height: 1.6;
  color: #1c2330;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0s linear 0.3s;
  pointer-events: none;
  z-index: 10;
  box-shadow: 4px 4px 0 rgba(28, 35, 48, 0.08);
}
.schem-hot:hover + .schem-leader + .schem-note {
  opacity: 1;
  visibility: visible;
  transition-delay: 0.12s;
}
/* Annotations positioned in each corner of the schematic object's
   coordinate space — kept inside the paper bounds so they don't get
   clipped by .cf-stage's overflow:hidden. Hotspot 1 (lens) lower-right,
   note in upper-right; hotspot 2 (top dial) upper-left, note upper-left;
   hotspot 3 (hot shoe) top-center, note top-right; hotspot 4 (grip)
   lower-left, note lower-left. */
.schem-note-1 { top: 4%;  right: 0; left: auto; }
.schem-note-2 { top: 4%;  left: 0; }
.schem-note-3 { top: 4%;  left: 50%; }
.schem-note-4 { bottom: 4%; left: 0; top: auto; }
.schem-num {
  display: inline-block;
  font-family: Georgia, serif;
  font-weight: 500;
  font-style: italic;
  color: #c1422c;
  font-size: 20px;
  line-height: 1;
  margin-bottom: 3px;
}
.schem-label {
  font-size: 9.5px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(28, 35, 48, 0.6);
  margin-bottom: 6px;
}
.schem-part {
  font-family: Georgia, serif;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.2;
  margin-bottom: 6px;
  color: #1c2330;
}
.schem-part em { font-style: italic; color: #c1422c; }
.schem-desc {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 10.5px;
  color: rgba(28, 35, 48, 0.75);
  line-height: 1.5;
}
.schem-spec {
  margin-top: 8px;
  padding-top: 6px;
  border-top: 1px dashed rgba(28, 35, 48, 0.3);
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 3px 8px;
  font-size: 9.5px;
}
.schem-k { color: rgba(28, 35, 48, 0.5); }
.schem-v { color: #c1422c; }