/* 倍速リスニング（SPEED LISTENING） */
/* カードの絵：メーターの針が 2.0x へ、音の波 */
.ax-speed-ndl { transform-box: fill-box; transform-origin: 50% 100%; animation: ax-speed-ndl 3.2s cubic-bezier(0.5, 0, 0.2, 1) infinite; }
@keyframes ax-speed-ndl { 0%, 8% { transform: rotate(-78deg); } 55%, 80% { transform: rotate(18deg); } 64% { transform: rotate(13deg); } 72% { transform: rotate(20deg); } 100% { transform: rotate(-78deg); } }
.ax-speed-bar { transform-box: fill-box; transform-origin: center; animation: ax-speed-bar 0.55s ease-in-out infinite alternate; animation-delay: var(--d, 0s); }
@keyframes ax-speed-bar { from { transform: scaleY(0.35); } to { transform: scaleY(1.15); } }

/* プレイ画面 */
.ax-speed-qz > * { flex-shrink: 0; }
.ax-speed-card { padding: 16px 16px 14px; }
.ax-speed-card.hot { border-color: #ffb02e; box-shadow: 0 0 30px rgba(255, 176, 46, 0.35); }
.ax-speed-card.limit { border-color: transparent; background: linear-gradient(#170a33, #0b0f36) padding-box, linear-gradient(90deg, #ff4f6d, #ffe14d, #ff4fd8, #ff4f6d) border-box; box-shadow: 0 0 36px rgba(255, 79, 109, 0.45); }
.ax-speed-top { display: flex; align-items: center; justify-content: center; gap: 12px; }
.ax-speed-g { flex: none; width: clamp(104px, 30vw, 150px); }
.ax-speed-g svg { display: block; width: 100%; height: auto; overflow: visible; }
.ax-speed-n { transform-box: fill-box; transform-origin: 50% 100%; transform: rotate(var(--to)); }
.ax-speed-g.swing .ax-speed-n { animation: ax-speed-sw 0.9s cubic-bezier(0.3, 1.5, 0.5, 1) both; }
@keyframes ax-speed-sw { from { transform: rotate(var(--from)); } to { transform: rotate(var(--to)); } }
.ax-speed-rt { text-align: left; line-height: 1; }
.ax-speed-rt small { display: block; font-family: var(--f-pix); font-size: 9px; color: var(--a-dim); letter-spacing: 0.12em; margin-bottom: 6px; }
.ax-speed-x { font-family: var(--f-pix); font-size: clamp(30px, 9vw, 46px); color: #fff; text-shadow: 0 0 18px var(--a-cyan); }
.ax-speed-card.hot .ax-speed-x { color: var(--a-yel); text-shadow: 0 0 18px #ffb02e; }
.ax-speed-card.limit .ax-speed-x { color: #ff8a9c; text-shadow: 0 0 20px var(--a-red); }

/* 音の波（読み上げ中だけ動く） */
.ax-speed-w { display: flex; align-items: center; justify-content: center; gap: 5px; height: 34px; margin: 10px 0 8px; }
.ax-speed-w i { display: block; width: 5px; height: var(--hh, 50%); border-radius: 3px; background: linear-gradient(var(--a-cyan), var(--a-pink)); opacity: 0.35; transform: scaleY(0.3); transition: transform 0.25s, opacity 0.25s; }
.ax-speed-card.talk .ax-speed-w i { opacity: 1; animation: ax-speed-wv 0.42s ease-in-out infinite alternate; animation-delay: var(--d, 0s); }
.ax-speed-card.talk.hot .ax-speed-w i { animation-duration: 0.3s; }
.ax-speed-card.talk.limit .ax-speed-w i { animation-duration: 0.22s; }
@keyframes ax-speed-wv { from { transform: scaleY(0.25); } to { transform: scaleY(1.1); } }

.ax-speed-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.ax-speed-st { font-size: 13px; font-weight: 900; color: var(--a-dim); }
.ax-speed-card.talk .ax-speed-st { color: var(--a-cyan); }
.ax-speed-card.ready .ax-speed-st { color: var(--a-yel); }
.ax-speed-ag { display: inline-flex; align-items: center; gap: 6px; border: 2px solid var(--a-cyan); background: rgba(53, 224, 255, 0.1); color: #fff; border-radius: 999px; padding: 8px 14px; font-weight: 900; font-size: 14px; touch-action: manipulation; }
.ax-speed-ag small { font-size: 11px; color: var(--a-cyan); }
.ax-speed-ag:hover:not(:disabled) { background: rgba(53, 224, 255, 0.25); }
.ax-speed-ag:disabled { opacity: 0.4; cursor: default; }

/* 選択肢：答えたあとに入れかえた語に色 */
.ax .qz-b mark { background: rgba(255, 79, 109, 0.3); color: #fff; border-radius: 4px; padding: 0 3px; box-shadow: inset 0 -2px 0 var(--a-red); }
.ax .qz-b mark.ok { background: rgba(61, 255, 154, 0.25); box-shadow: inset 0 -2px 0 var(--a-grn); }
.ax-speed-why p { margin: 0; }
.ax-speed-why b.ng { color: var(--a-red); }
.ax-speed-ja { margin-top: 6px !important; font-size: 14.5px; color: #fff; }
.ax-speed-src { margin-top: 6px !important; display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: baseline; font-size: 12px; color: var(--a-dim); }
.ax-speed-src a { color: var(--a-cyan); font-weight: 900; white-space: nowrap; }
.ax-speed-next { margin-top: 2px; padding: 13px 34px; font-size: 14px; }

/* 読み上げに対応していない端末 */
.ax-speed-nosup { margin: 8px 0 0; max-width: 30em; padding: 12px 16px; border-radius: 14px; border: 2px solid var(--a-red); background: rgba(255, 79, 109, 0.12); font-weight: 900; font-size: 14px; color: #fff; }

@media (prefers-reduced-motion: reduce) {
  .ax-speed-ndl, .ax-speed-bar, .ax-speed-g.swing .ax-speed-n, .ax-speed-card.talk .ax-speed-w i { animation: none !important; }
  .ax-speed-ndl { transform: rotate(18deg); }
  .ax-speed-card.talk .ax-speed-w i { transform: scaleY(0.8); }
}