*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:#ebeeff;min-height:100vh;color:#fff}.quiz-container{position:relative;background:#112179;border-radius:20px;padding:2rem;width:96%;max-width:1100px;margin:2rem auto;border:1px solid rgba(255,255,255,.18)}.header{text-align:center;margin-bottom:2rem}.progress-bar{width:100%;height:8px;background:rgba(255,255,255,.2);border-radius:4px;overflow:hidden;margin:1rem 0}.progress-fill{height:100%;background:linear-gradient(90deg,#fd7f7f 0%,#ff3a3a 100%);width:0%;transition:width .3s ease}.question{font-size:1.8rem;text-align:center;margin:2rem 0 1rem;line-height:1.6}.translation{font-size:1.1rem;text-align:center;margin:1rem 0 2rem;color:#e0e0e0;font-style:italic;display:none;animation:fadeIn .5s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.blank{color:#ffeb3b;font-weight:700;text-decoration:underline;padding:0 .5rem;transition:all .5s ease}.blank.filled{color:#4caf50;background:rgba(76,175,80,.2);border-radius:4px;text-decoration:none;animation:fillAnimation .5s ease}@keyframes fillAnimation{0%{transform:scale(1);background:rgba(255,235,59,.3)}50%{transform:scale(1.1);background:rgba(76,175,80,.4)}to{transform:scale(1);background:rgba(76,175,80,.2)}}.gap-sound-btn{position:absolute;top:29px;right:16px;width:46px;height:46px;border-radius:50%;border:2px solid rgba(255,255,255,.85);background:linear-gradient(135deg,#4c8ef7,#2b6cb0);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;cursor:pointer;z-index:10;box-shadow:0 6px 16px #0000002e;transition:transform .18s ease,box-shadow .18s ease,opacity .18s ease}.gap-sound-btn:hover{transform:translateY(-1px);box-shadow:0 8px 20px #00000040}.gap-sound-btn:focus-visible{outline:none;box-shadow:0 0 0 3px #4c8ef773}.gap-sound-btn.disabled{opacity:.7;cursor:not-allowed}.toggles{display:flex;justify-content:center;gap:2rem;margin:1.5rem 0}.toggle{display:flex;align-items:center;gap:.6rem;font-size:1rem;cursor:pointer}.toggle input[type=checkbox]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:22px;height:22px;border-radius:8px;border:2px solid rgba(255,255,255,.7);background:rgba(255,255,255,.08);display:inline-block;position:relative;cursor:pointer;transition:background .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease}.toggle input[type=checkbox]:hover{transform:translateY(-1px)}.toggle input[type=checkbox]:checked{background:linear-gradient(135deg,#4facfe 0%,#00f2fe 100%);border-color:#4facfe;box-shadow:0 6px 16px #4facfe59}.toggle input[type=checkbox]:focus-visible{outline:none;box-shadow:0 0 0 3px #4facfe73}.toggle input[type=checkbox]:checked:after{content:"";position:absolute;top:50%;left:50%;width:7px;height:12px;border-right:2px solid #06223a;border-bottom:2px solid #06223a;transform:translate(-50%,-60%) rotate(45deg)}.options-container{margin:2rem 0}.options-title{text-align:center;font-size:1.2rem;margin-bottom:1.5rem;color:#e0e0e0}.option{display:block;width:100%;background:rgba(255,255,255,.1);border:2px solid rgba(255,255,255,.2);border-radius:12px;padding:1rem;margin:.8rem 0;color:#fff;font-size:1rem;cursor:pointer;transition:all .3s ease;text-align:left}.option:hover{background:rgba(255,255,255,.2);border-color:#fff6;transform:translateY(-2px)}.option.selected{background:rgba(76,172,254,.3);border-color:#4facfe}.option.correct-animation{background:rgba(76,175,80,.4);border-color:#4caf50;animation:correctPulse 1s ease}.option.incorrect-animation{background:rgba(244,67,54,.4);border-color:#f44336;animation:incorrectShake .5s ease}.option.correct-reveal{background:rgba(76,175,80,.3);border-color:#4caf50;animation:correctPulse 1s ease}@keyframes correctPulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}@keyframes incorrectShake{0%,to{transform:translate(0)}25%{transform:translate(-10px)}75%{transform:translate(10px)}}.option-text{font-size:1.4rem;font-weight:500;margin-bottom:.3rem}.option-english{font-size:.9rem;color:#b0b0b0;font-style:italic;display:none}.kanji-with-hira{display:inline-block!important;position:relative!important;vertical-align:baseline!important;margin:0 2px!important}.hira-top{display:block!important;position:absolute!important;top:-.6em!important;left:50%!important;transform:translate(-50%)!important;font-size:.6em!important;color:#ffeb3b!important;white-space:nowrap!important;text-align:center!important;line-height:1!important;font-weight:400!important;text-shadow:1px 1px 2px rgba(0,0,0,.5)!important;z-index:10!important}.kanji-base{display:inline-block!important;position:relative!important;z-index:1!important}.hide-hira .hira-top{display:none!important;visibility:hidden!important}ruby{ruby-position:over!important;ruby-align:center!important;display:inline-ruby!important;vertical-align:baseline!important}rb{line-height:1.2}rt{position:static!important;font-size:.6em!important;color:#ffeb3b!important;white-space:nowrap!important;line-height:1!important;text-shadow:1px 1px 2px rgba(0,0,0,.5)!important}.question rt{font-size:.5em!important}.hide-furi rt{display:none!important}@media (max-width: 768px){.gap-sound-btn{top:16px;right:12px;width:42px;height:42px;font-size:17px}.quiz-container{padding:1.4rem}.question{font-size:1.6rem}.hira-top{font-size:.65em!important;top:-.6em!important}rt{font-size:.65em!important}.options-container{display:grid;grid-template-columns:1fr 1fr;gap:.8rem;margin:1.5rem 0}.option{margin:0;padding:.8rem;font-size:.9rem;border-radius:10px;min-height:60px;display:flex;align-items:center;justify-content:center;text-align:center;flex-direction:column}.option-text{font-size:1.1rem;margin-bottom:.2rem}.option-english{font-size:.8rem}.button-container{flex-direction:column;align-items:center;margin-top:1.5rem}.next-btn,.restart-btn,.back-btn{width:100%;max-width:200px}}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(0,0,0,.35);display:none;align-items:center;justify-content:center;z-index:1000;animation:slideIn .5s ease-out}@keyframes slideIn{0%{transform:translateY(-100px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-overlay.show{display:flex}.completion-modal{background:#ffffff;color:#2d3748;width:min(360px,92vw);border-radius:16px;box-shadow:0 10px 30px #0000001a;position:relative;padding:24px;text-align:center}.close-btn{position:absolute;right:12px;top:8px;background:transparent;border:none;color:#a0aec0;font-size:24px;cursor:pointer}.modal-ok-btn{display:inline-block;width:auto;margin-top:4px;padding:10px 18px;border:none;border-radius:10px;background:#6b69da;color:#fff;font-weight:700;cursor:pointer;box-shadow:none;font-size:1rem}.button-container{display:flex;justify-content:center;gap:1rem;margin:2rem 0;flex-wrap:wrap}.next-btn,.restart-btn,.back-btn{background:#6b69da;color:#fff;border:none;border-radius:12px;padding:12px 24px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;min-width:120px}.next-btn:hover,.restart-btn:hover,.back-btn:hover{transform:translateY(-2px)}.next-btn:disabled{background:rgba(255,255,255,.2);color:#ffffff80;cursor:not-allowed;transform:none;box-shadow:none}.restart-btn{background:#e3812a}.back-btn{background:#ab3d3d}.result-message{font-size:20px;line-height:1.6;margin-top:12px}.final-score{font-size:16px;margin-bottom:12px}@media (max-width: 768px){.button-container{flex-direction:column;align-items:center}.next-btn,.restart-btn,.back-btn{width:100%;max-width:200px}.option:last-child:nth-child(odd){grid-column:1 / -1;justify-self:center;width:calc(50% - .4rem)}}.start-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(0,0,0,.45);display:flex;align-items:center;justify-content:center;z-index:9999}.start-overlay.show{display:flex}.start-modal{background:#ffffff;color:#2d3748;width:min(520px,82vw);border-radius:16px;box-shadow:0 10px 30px #0000001a;padding:32px;text-align:center;position:relative}.start-modal h3{font-size:1.5rem;line-height:1.4;margin-bottom:16px}.start-modal p{font-size:1.2rem;line-height:1.6;margin-bottom:12px}.start-modal p:last-of-type{margin-bottom:10px}.start-close{position:absolute;top:10px;right:12px;background:transparent;border:none;color:#a0aec0;font-size:24px;cursor:pointer}.toggles .toggle,.toggles .toggle input{cursor:pointer}.start-btn{margin-top:12px;padding:10px 18px;border:none;border-radius:10px;background:#6b69da;color:#fff;font-weight:700;cursor:pointer;box-shadow:none}