:root { --ink: #23262b; --muted: #5d6670; --line: #d5dbe0; --accent: #d42a1e; --bg: #f3f5f6; --card: #fff; }
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; }
main { max-width: 1240px; margin: 0 auto; padding: 16px; }
h1 { font-size: 1.6rem; margin: 2px 0; }
h2 { font-size: 1.05rem; margin: 14px 0 6px; }
.lead { color: var(--muted); margin: 0 0 12px; max-width: 780px; }
.small { color: var(--muted); font-size: .85rem; }
#split { display: grid; gap: 14px; }
@media (min-width: 900px) { #split { grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr); align-items: start; } #look { position: sticky; top: 8px; } }
#stage { width: 100%; aspect-ratio: 16 / 10; display: block; border-radius: 14px; touch-action: none; cursor: crosshair; background: #1d2230; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 10px 0; }
button { font: inherit; border: 1px solid var(--line); background: var(--card); color: var(--ink); border-radius: 10px; padding: 9px 14px; cursor: pointer; min-height: 44px; }
button.on { border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); font-weight: 600; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 700; min-width: 8em; }
button.ghost { background: transparent; }
.tempo { display: flex; gap: 8px; align-items: center; color: var(--muted); }
#insts, #lens { display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); gap: 6px; }
#insts button, #lens button { display: flex; align-items: center; gap: 8px; }
.sw { width: 22px; height: 14px; border-radius: 3px; box-shadow: inset 0 0 0 1px rgba(0,0,0,.25); display: inline-block; }
.len { display: inline-flex; gap: 2px; }
.len i { width: 9px; height: 12px; background: #8d939c; border-radius: 2px; display: inline-block; }
#presets { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 6px; }
#real { margin-top: 22px; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 6px 18px 12px; }