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var(--ink)}.difficulty-btn.selected{background:var(--blue);color:#fff;border-color:var(--ink);transform:translate(2px,2px);box-shadow:1px 1px 0 var(--ink)}.difficulty-btn.dimmed{opacity:.35;pointer-events:none}.difficulty-btn:disabled{cursor:default}.quiz-explanation-box strong{color:var(--blue)}.quiz-next-btn{display:block;width:100%;margin-top:12px;padding:14px;border:var(--stroke) solid var(--ink);border-radius:14px;background:var(--red);color:#fff;font-family:"M PLUS Rounded 1c",sans-serif;font-size:15px;font-weight:800;cursor:pointer;box-shadow:var(--shadow);transition:all .12s}.quiz-next-btn:hover{transform:translateY(-1px);box-shadow:7px 7px 0 var(--ink)}.quiz-next-btn:active{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink)}.quiz-question-tag{display:inline-block;background:var(--purple);color:#fff;font-family:"M PLUS Rounded 1c",sans-serif;font-size:12px;font-weight:800;padding:3px 12px;border-radius:6px;border:2px solid 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.12s}.writing-action-btn:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--ink)}.writing-action-btn:disabled{opacity:.4;cursor:default}.writing-submit-btn{width:100%;max-width:280px;padding:14px;border:var(--stroke) solid var(--ink);border-radius:14px;background:var(--blue);color:#fff;font-family:"M PLUS Rounded 1c",sans-serif;font-size:15px;font-weight:800;cursor:pointer;box-shadow:var(--shadow);transition:all .12s}.writing-submit-btn:hover{transform:translateY(-1px);box-shadow:7px 7px 0 var(--ink)}.writing-submit-btn:active{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink)}.writing-submit-btn:disabled{opacity:.4;cursor:default;transform:none;box-shadow:var(--shadow)}.writing-checking{display:flex;flex-direction:column;align-items:center;gap:12px;padding:40px 0;font-family:"M PLUS Rounded 1c",sans-serif;font-size:14px;font-weight:700;color:var(--ink)}.writing-feedback{width:100%;max-width:320px;padding:20px;border-radius:16px;border:var(--stroke) solid var(--ink);box-shadow:var(--shadow);animation:pop-in .3s var(--bounce)}.writing-feedback.correct{background:#e0f7f2;border-color:var(--teal);box-shadow:6px 6px 0 var(--teal)}.writing-feedback.wrong{background:#fff0e5;border-color:var(--orange);box-shadow:6px 6px 0 var(--orange)}.writing-correct-display,.writing-wrong-display{display:flex;align-items:center;gap:12px}.writing-result-icon{font-size:36px;font-weight:900;flex-shrink:0}.writing-feedback.correct .writing-result-icon{color:var(--teal)}.writing-feedback.wrong .writing-result-icon{color:var(--orange)}.writing-result-answer{font-family:"M PLUS Rounded 1c",sans-serif;font-size:32px;font-weight:900;color:var(--ink)}.writing-result-detail{display:flex;flex-direction:column;gap:4px;font-size:14px;font-weight:600;color:var(--ink)}.result-screen{position:relative;z-index:1;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;padding:32px 24px}.result-score{font-family:"M PLUS Rounded 1c",sans-serif;font-size:64px;font-weight:900;color:var(--red)}.result-score-label{font-size:14px;color:var(--muted)}.result-message{font-family:"M PLUS Rounded 1c",sans-serif;font-size:22px;font-weight:900;text-align:center;color:var(--ink)}.result-detail{font-size:14px;color:var(--muted);text-align:center;line-height:1.8}.result-actions{display:flex;gap:12px}.result-btn{padding:14px 32px;border:var(--stroke) solid var(--ink);border-radius:14px;font-family:"M PLUS Rounded 1c",sans-serif;font-size:15px;font-weight:800;cursor:pointer;box-shadow:var(--shadow);transition:all .12s}.result-btn:active{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink)}.result-btn.primary{background:var(--red);color:#fff}.result-btn.primary:hover{transform:translateY(-1px);box-shadow:7px 7px 0 var(--ink)}.result-btn.secondary{background:var(--surface);color:var(--ink)}.result-btn.secondary:hover{transform:translateY(-1px);box-shadow:7px 7px 0 var(--ink)}.loading{position:relative;z-index:1;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px}.loading-spinner{width:40px;height:40px;border:4px solid var(--ink);border-top-color:var(--red);border-radius:50%;animation:spin .8s linear infinite}.loading-text{font-family:"M PLUS Rounded 1c",sans-serif;font-size:14px;font-weight:700;color:var(--ink)}.id-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;background:var(--surface);color:var(--ink);font-family:"M PLUS Rounded 1c",sans-serif;font-size:13px;font-weight:700;border:var(--stroke) solid var(--ink);cursor:pointer;white-space:nowrap;box-shadow:3px 3px 0 var(--ink);transition:all .12s}.id-badge:hover{transform:translateY(-1px);box-shadow:4px 4px 0 var(--ink)}.id-badge:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--ink)}.id-badge-none{background:var(--surface);color:var(--muted)}.id-badge-none:hover{color:var(--ink)}.id-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:90}.id-menu-dropdown{position:fixed;top:50px;right:12px;background:var(--surface);border:var(--stroke) solid var(--ink);border-radius:16px;padding:6px;box-shadow:8px 8px 0 var(--ink);min-width:180px;z-index:100;display:flex;flex-direction:column;gap:2px;animation:drop-in .15s var(--bounce)}.id-menu-item{display:block;width:100%;padding:8px 12px;border:none;background:transparent;border-radius:10px;font-size:13px;color:var(--ink);cursor:pointer;text-align:left;font-weight:500;font-family:Noto Sans JP,sans-serif;transition:background .15s}.id-menu-item:hover{background:var(--bg)}.id-menu-item:disabled{opacity:.5;cursor:default}.id-menu-item.danger{color:var(--red)}.id-menu-confirm{display:flex;gap:6px;align-items:center;justify-content:center;padding:4px 0}.id-menu-confirm-label{font-size:12px;color:var(--muted)}.id-menu-btn-yes{font-size:12px;padding:3px 12px;border-radius:6px;border:2px solid var(--ink);background:var(--red);color:#fff;cursor:pointer;font-weight:600;font-family:Noto Sans JP,sans-serif}.id-menu-btn-yes:disabled{opacity:.5;cursor:default}.id-menu-btn-no{font-size:12px;padding:3px 12px;border-radius:6px;border:2px solid var(--ink);background:transparent;color:var(--ink);cursor:pointer;font-family:Noto Sans JP,sans-serif}.id-menu-restore{display:flex;flex-direction:column;gap:6px;padding:4px 6px}.id-menu-restore input{font-size:13px;padding:6px 10px;border-radius:8px;border:2px solid var(--ink);background:#fff;color:var(--ink);text-align:center;font-family:Noto Sans JP,sans-serif;outline:none}.id-menu-restore input:focus{border-color:var(--blue)}.id-menu-restore-actions{display:flex;gap:6px;justify-content:center}.id-menu-error{font-size:11px;color:var(--red);text-align:center}.section-divider{width:100%;height:4px;background:repeating-linear-gradient(-45deg,var(--ink),var(--ink) 4px,transparent 4px,transparent 8px);margin:8px 0}@keyframes fade-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes drop-in{0%{opacity:0;transform:scale(.9) translateY(12px)}to{opacity:1;transform:scale(1) translateY(0)}}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-6px)}40%{transform:translate(6px)}60%{transform:translate(-4px)}80%{transform:translate(4px)}}@keyframes pop-in{0%{transform:scale(.95)}50%{transform:scale(1.02)}to{transform:scale(1)}}@keyframes slide-up{0%{transform:translate(-50%,100%)}to{transform:translate(-50%)}}