.ud-wrap { position: relative; max-width: 460px; margin: 0 auto; width: 100%; }
.ud-custom { display: flex; align-items: center; gap: 8px; }
.ud-custom[hidden] { display: none !important; }
.ud-num-in { text-align: center; font-weight: 800; font-family: var(--font-num); font-size: 18px; }
.ud-tilde { font-weight: 900; color: var(--text-3); }
.ud-board {
  text-align: center; padding: 16px 12px 14px; border-radius: var(--radius-lg);
  background: var(--surface-2); border: 1px solid var(--border); transition: background .3s;
}
.ud-board.is-boom { background: color-mix(in srgb, var(--red) 16%, var(--surface-2)); border-color: var(--red); }
.ud-range {
  display: flex; align-items: baseline; justify-content: center; gap: 12px; flex-wrap: wrap;
  font-family: var(--font-num); font-weight: 900; font-size: clamp(44px, 14vw, 72px); line-height: 1.05; letter-spacing: -0.03em;
}
.ud-sep { color: var(--text-3); font-size: .6em; }
.ud-left { color: var(--text-2); font-weight: 700; font-size: 14px; margin-top: 4px; }
.ud-hint { margin-top: 8px; min-height: 1.6em; font-weight: 900; font-size: 20px; color: var(--text-2); }
.ud-hint.is-up { color: var(--blue); }
.ud-hint.is-down { color: var(--primary); }
.ud-hint.is-boom { color: var(--red); }
.ud-display {
  position: relative; min-height: 70px; display: grid; place-items: center; border-radius: 18px;
  background: var(--surface); border: 2px solid var(--border-strong);
  font-family: var(--font-num); font-weight: 900; font-size: 42px; letter-spacing: .04em;
}
.ud-display.is-empty::before { content: attr(data-ph); color: var(--text-3); font-size: 20px; font-weight: 700; letter-spacing: 0; }
.ud-display.is-judging { animation: bb-pulse .5s ease-in-out infinite; border-color: var(--accent); }
.ud-display.is-boom { border-color: var(--red); color: var(--red); background: color-mix(in srgb, var(--red) 10%, var(--surface)); }
.ud-pad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.ud-pad[hidden] { display: none !important; }
.ud-pad.is-busy { opacity: .55; pointer-events: none; }
.ud-key {
  min-height: 58px; border-radius: 16px; border: 1px solid var(--border-strong); background: var(--surface);
  font-family: var(--font-num); font-size: 26px; font-weight: 800; cursor: pointer; color: var(--text);
  box-shadow: 0 2px 0 var(--border-strong); transition: transform .06s, background .12s; touch-action: manipulation;
  -webkit-tap-highlight-color: transparent; user-select: none;
}
.ud-key:hover { background: var(--surface-2); }
.ud-key:active { transform: translateY(2px); box-shadow: none; }
.ud-key.is-back { font-size: 24px; color: var(--text-2); }
.ud-key.is-ok { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); font-family: var(--font); font-size: 20px; box-shadow: 0 2px 0 var(--primary-hover); }
.ud-key.is-ok:hover { background: var(--primary-hover); }
.ud-hist .panel-title { margin-bottom: 8px; }
.ud-hist-list { display: flex; flex-wrap: wrap; gap: 6px; }
.ud-hist-item {
  --c: var(--text-3);
  display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px 4px 8px; border-radius: 999px;
  background: var(--surface-2); border: 1px solid var(--border); border-left: 4px solid var(--c); font-size: 13.5px; font-weight: 700;
}
.ud-hist-item b { font-family: var(--font-num); font-size: 15px; }
.ud-hist-name { max-width: 7em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text-2); }
.ud-hist-dir { font-size: 12px; color: var(--text-3); }
.ud-hist-item.is-boom { border-color: var(--red); background: color-mix(in srgb, var(--red) 12%, var(--surface)); }
.ud-after .btn { min-width: 0; }
.ud-flash {
  position: fixed; inset: 0; z-index: 1400; pointer-events: none;
  background: radial-gradient(circle at 50% 45%, #fff 0%, #fff3c4 30%, #ffb020 60%, rgba(255, 90, 54, .6) 100%);
  animation: ud-flash .85s ease-out forwards;
}
@keyframes ud-flash { 0% { opacity: .95; } 100% { opacity: 0; } }
.ud-part {
  position: absolute; border-radius: 50%; pointer-events: none; z-index: 5;
  transform: translate(-50%, -50%); animation: ud-part 1.1s cubic-bezier(.1, .75, .3, 1) forwards;
}
@keyframes ud-part { to { transform: translate(calc(-50% + var(--dx)), calc(-50% + var(--dy))) scale(.3); opacity: 0; } }
.game-shell.is-full .ud-wrap { max-width: 520px; }