/* Original study cards. Explicit height + display switching avoids iOS backface issues. */
.safari-study-card .safari-card-front b{color:#264a3d}.safari-mode-row .safari-quiz-mode,.safari-mode-back{font-family:inherit;font-size:11px;font-weight:700}
@media(prefers-reduced-motion:reduce){.safari-study .safari-study-card{transition:none}}
.safari-study{color:#234a40}.safari-mode-row{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:12px}.safari-mode-row>b{font-size:16px}.safari-quiz-mode,.safari-mode-back{min-height:44px;border:1px solid #cadad3;border-radius:10px;background:#eaf1e7;color:#36574b;padding:8px 11px;cursor:pointer;font:700 11px inherit}.safari-mode-back{width:100%;margin-bottom:15px}.safari-study-stats{display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:space-between;background:#e5eddf;padding:10px 12px;border-radius:12px;font-size:12px}.safari-study-stats b{color:#3b644b}.safari-study-guide{font-size:12px;line-height:1.65;margin:12px 0}.safari-study-board{position:relative}.safari-study-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:9px}.safari-study-card{position:relative;display:block;min-height:104px;min-width:0;overflow:hidden;padding:0;border:2px solid #d4dccb;border-radius:13px;background:linear-gradient(145deg,#eff5df,#dce9cf);cursor:pointer;touch-action:manipulation;transition:box-shadow .18s,transform .18s}.safari-study-card:focus-visible,.safari-study-actions button:focus-visible,.safari-quiz-mode:focus-visible{outline:3px solid #7864bc;outline-offset:3px}.safari-study-card .safari-card-back{display:grid;place-items:center;position:absolute;inset:0;color:#4d7357}.safari-card-back>span{display:flex;flex-direction:column;align-items:center;gap:6px}.safari-card-back b{font-size:27px}.safari-card-back small{font-size:10px}.safari-study-card.word{background:linear-gradient(145deg,#f1eafa,#dfd5f1);border-color:#d4c5e8}.safari-study-card.number{background:linear-gradient(145deg,#e7f4f7,#c8e4ed);border-color:#b9d9e1}.safari-study-card.word .safari-card-back{color:#67528d}.safari-study-card.number .safari-card-back{color:#3b7184}.safari-study-card .safari-card-front{position:absolute;inset:0;display:none;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:6px;background:#fffdf5}.safari-study-card.revealed .safari-card-back{display:none}.safari-study-card.revealed .safari-card-front{display:flex}.safari-card-front img{display:block;width:100%;height:58px;object-fit:contain}.safari-card-front b{font-size:clamp(11px,1.5vw,16px);overflow-wrap:anywhere;text-align:center;line-height:1.2;max-width:100%}.safari-card-front small{font-size:9px;letter-spacing:.1em;color:#8a769e}.safari-study-card.matched{border-color:#8bb274;box-shadow:inset 0 0 0 1px #a0c688;cursor:default}.safari-study-card:disabled{opacity:1}.safari-card-check{position:absolute;top:3px;right:5px;color:#528a45;font-size:11px;font-style:normal}.safari-study-paused{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:15px;background:#15392be8;border-radius:13px;color:#f4ffe2;z-index:2}.safari-study-paused button,.safari-study-primary{min-height:44px;padding:10px 17px;border-radius:10px;border:1px solid #d4e6a8;background:#e2efb9;color:#365137;font-weight:800;cursor:pointer}.safari-study-feedback{font-size:12px;line-height:1.6;background:#edf1e7;border-radius:10px;padding:9px 12px;min-height:37px;margin:10px 0}.safari-study-actions{display:grid;grid-template-columns:1fr 1.4fr 1fr;gap:7px}.safari-study-actions button{min-height:44px;padding:7px;border:1px solid #d5ddcc;background:#f0f4e8;border-radius:10px;color:#43644a;font-size:11px;cursor:pointer}.safari-study-actions button:disabled{opacity:.5;cursor:default}.safari-study-note{display:block;font-size:10px;line-height:1.7;color:#6a7f70;margin-top:9px}.safari-study-finale{text-align:center;padding:16px 0}.safari-study-book{display:flex;flex-wrap:wrap;justify-content:center;gap:7px;margin:15px 0;max-height:280px;overflow:auto}.safari-study-book button{min-height:44px;border:1px solid #d3d9cb;background:#eff5e6;border-radius:9px;font-size:11px;color:#426947;padding:8px;cursor:pointer}@media(hover:hover) and (prefers-reduced-motion:no-preference){.safari-study-card:not(:disabled):hover{transform:translateY(-3px);box-shadow:0 7px 15px #264d3720}}@media(max-width:680px){.safari-mode-row{margin-bottom:8px}.safari-mode-row>b{font-size:13px}.safari-quiz-mode{font-size:10px;padding:6px 8px}.safari-study-stats{font-size:10px;padding:8px}.safari-study-guide{font-size:10px;margin:8px 0}.safari-study-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px}.safari-study-card{min-height:78px;border-radius:10px}.safari-card-front img{height:43px}.safari-card-front b{font-size:11px}.safari-card-back b{font-size:21px}.safari-card-back small{font-size:8px}.safari-card-front small{font-size:8px}.safari-study-feedback{font-size:10px;padding:7px 8px}.safari-study-actions button{font-size:10px}.safari-study-note{font-size:9px}.safari-study-book{max-height:220px}}@media(prefers-reduced-motion:reduce){.safari-study-card{transition:none}}