.settings-list{display:flex;flex-direction:column;background-color:#fff;border-radius:12px;overflow:hidden;border:1px solid #f1f3f5}.settings-item{display:flex;justify-content:space-between;align-items:center;padding:1rem;border-bottom:1px solid #f1f3f5;font-weight:500;color:#333}.settings-item:last-child{border-bottom:none}.volume-control{flex-direction:column;align-items:flex-start;gap:.5rem}.volume-slider-container{width:100%;padding:.5rem 0}.volume-slider{width:100%;height:6px;-webkit-appearance:none;background:#e0e0e0;border-radius:3px;outline:none}.volume-slider::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;background:#4A90E2;border-radius:50%;cursor:pointer;box-shadow:0 2px 4px #0000001a}.settings-label{display:flex;align-items:center;gap:.75rem}.settings-icon{font-size:1.2rem}.switch{position:relative;display:inline-block;width:48px;height:26px}.switch input{opacity:0;width:0;height:0}.slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background-color:#e0e0e0;transition:.3s}.slider:before{position:absolute;content:"";height:20px;width:20px;left:3px;bottom:3px;background-color:#fff;transition:.3s;box-shadow:0 2px 4px #00000026}input:checked+.slider{background-color:#4a90e2}input:checked+.slider:before{transform:translate(22px)}.slider.round{border-radius:26px}.slider.round:before{border-radius:50%}.custom-dialog-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#0009;display:flex;justify-content:center;align-items:flex-end;z-index:9999;padding:0}.custom-dialog-container{background-color:#fff;border-radius:24px 24px 0 0;width:100%;max-width:500px;overflow:hidden;box-shadow:0 -5px 25px #00000026;animation:dialog-slide-up .3s cubic-bezier(.25,.1,.25,1);padding-bottom:env(safe-area-inset-bottom)}@keyframes dialog-slide-up{0%{transform:translateY(100%)}to{transform:translateY(0)}}.custom-dialog-header{padding:20px 20px 10px;font-weight:700;font-size:18px;text-align:center;color:#333}.custom-dialog-body{padding:10px 20px 20px;text-align:center;color:#666;font-size:15px;line-height:1.5}.custom-dialog-body p{margin:0}.custom-dialog-footer{display:flex;border-top:1px solid #f0f0f0}.dialog-btn{flex:1;padding:15px;border:none;background:none;font-size:16px;font-weight:600;cursor:pointer;transition:background-color .2s}.dialog-btn:active{background-color:#f9f9f9}.confirm-btn{color:#007aff}.cancel-btn{color:#ff3b30;border-right:1px solid #f0f0f0}@media (prefers-color-scheme: dark){.custom-dialog-container{background-color:#1c1c1e}.custom-dialog-header{color:#fff}.custom-dialog-body{color:#ebebf5}.custom-dialog-footer{border-top-color:#38383a}.cancel-btn{border-right-color:#38383a}.dialog-btn:active{background-color:#2c2c2e}}.app-shell{display:flex;flex-direction:column;width:100%;height:100%;overflow:hidden;background-color:#f8f9fa;position:relative}.global-header{position:relative;box-sizing:border-box;width:100%;height:48px;padding:0 4px;display:flex;justify-content:space-between;align-items:center;background-color:#fff;border-bottom:1px solid #f1f3f5;z-index:1000;flex-shrink:0}.header-icon-btn{width:48px;height:48px;padding:0;margin:0;background:transparent;border:none;display:flex;justify-content:center;align-items:center;cursor:pointer;z-index:2;border-radius:50%;transition:background-color .2s;position:relative}.header-icon-btn:active{background-color:#f1f3f5}.hint-badge{position:absolute;top:8px;right:6px;background-color:#ff4d4f;color:#fff;font-size:10px;font-weight:700;min-width:16px;height:16px;border-radius:10px;display:flex;align-items:center;justify-content:center;padding:0 4px;border:1.5px solid #ffffff;box-shadow:0 2px 4px #0000001a;pointer-events:none}.header-right-actions{display:flex;gap:4px;z-index:2}.page-title{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);height:24px;line-height:24px;margin:0;font-size:18px;font-weight:700;color:#333;text-align:center;white-space:nowrap;pointer-events:none}.title-easy{color:#4a90e2}.content-area{flex:1;overflow-y:auto;position:relative;background-color:#fff}.bottom-nav{width:100%;background-color:#fff;border-top:1px solid #edf2f7;display:flex;justify-content:space-around;align-items:center;padding:12px 0 calc(12px + env(safe-area-inset-bottom));z-index:1000;flex-shrink:0}.nav-item{display:flex;flex-direction:column;align-items:center;justify-content:center;text-decoration:none;color:#888;font-size:12px;gap:4px;flex:1;height:100%}.nav-icon{width:24px;height:24px;display:flex;justify-content:center;align-items:center}.nav-icon img{width:100%;height:100%;object-fit:contain}.nav-item.active{color:#4a90e2;font-weight:700}.nav-item.active img{filter:invert(53%) sepia(93%) saturate(543%) hue-rotate(180deg) brightness(91%) contrast(92%)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.4);display:flex;align-items:center;justify-content:center;z-index:2000;padding:20px}.settings-modal{background:white;width:100%;max-width:320px;border-radius:20px;overflow:hidden;box-shadow:0 10px 25px #0000001a}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.5rem;border-bottom:1px solid #f1f3f5}.modal-header h3{margin:0;font-size:1.1rem}.close-btn{background:none;border:none;font-size:1.2rem;cursor:pointer;color:#999}.modal-body{padding:1rem}.mode-select-container{padding:1rem 1.5rem 2rem;display:flex;flex-direction:column;align-items:center;min-height:100%;box-sizing:border-box}.mode-select-title{font-size:1.6rem;font-weight:800;color:#2d3436;margin-bottom:2rem;margin-top:1rem;width:100%;max-width:400px;text-align:left}.mode-cards{width:100%;max-width:400px;display:flex;flex-direction:column;gap:1.2rem}.mode-card{background:white;border-radius:24px;padding:1.5rem;display:flex;align-items:center;gap:1.2rem;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);box-shadow:0 4px 15px #0000000d;border:2px solid transparent;position:relative}.mode-card:active{background-color:#00000005}.mode-card.sudoku{background-color:#f0f7ff}.mode-card.nemonemo{background-color:#fff9f0}.mode-card.linelink{background-color:#fff0f0}.mode-icon{font-size:2.2rem;width:60px;height:60px;background:white;border-radius:18px;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 8px #00000008}.mode-info{flex:1}.mode-name{margin:0;font-size:1.2rem;font-weight:800;color:#2d3436}.mode-desc{margin:4px 0 0;font-size:.9rem;color:#636e72}.arrow-icon{font-size:1.5rem;color:#b2bec3}.mini-progress-container{width:100%;height:14px;background-color:#0000001a;border-radius:7px;margin-top:10px;position:relative;overflow:hidden}.mini-progress-bar{height:100%;background:linear-gradient(90deg,#4a90e2,#87ceeb);border-radius:7px;transition:width .5s ease-out}.mini-progress-text{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:.65rem;font-weight:900;color:#2d3436;text-shadow:-1px -1px 0 #fff,1px -1px 0 #fff,-1px 1px 0 #fff,1px 1px 0 #fff;z-index:2}.city-grid{width:100%;max-width:400px;display:flex;flex-direction:column;gap:1.2rem;margin:0 auto;padding:0;padding-bottom:2rem;box-sizing:border-box}.city-card{width:100%;background:white;border-radius:24px;padding:1.5rem;display:flex;align-items:center;gap:1.2rem;cursor:pointer;transition:background-color .2s ease,border-color .2s ease,box-shadow .2s ease;box-shadow:0 4px 15px #0000000d;border:2px solid transparent;position:relative;box-sizing:border-box}.city-card:active{background-color:#f8f9fa;border-color:#e0e0e0}.city-card.locked{opacity:.7;background-color:#f5f5f5!important;cursor:not-allowed}.city-number{font-size:1.5rem;font-weight:900;color:#ddd;margin-right:15px;min-width:35px;text-align:center}.city-card:not(.locked) .city-number{color:#4a90e2}.lock-text{color:#e53935;font-size:.85rem;font-weight:500}.city-progress-stats{display:flex;gap:15px;margin-bottom:4px}.progress-text{color:#666;font-size:.85rem;font-weight:600}.perfect-text{color:#f39c12;font-size:.85rem;font-weight:700}.mypage-new-container{padding:1rem 1.2rem;display:flex;flex-direction:column;gap:1.5rem;background-color:#f8f9fa;min-height:100%}.new-profile-card{background:white;border-radius:24px;padding:1.5rem;box-shadow:0 4px 20px #0000000d}.card-top{display:flex;align-items:center;gap:1rem;margin-bottom:1.2rem}.avatar-circle{width:56px;height:56px;background:#e3f2fd;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5rem;color:#1565c0;font-weight:700}.user-details{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;text-align:left}.user-details .user-name{margin:0;padding:0;font-size:1.15rem;font-weight:800;color:#2d3436;line-height:1.2}.user-details .user-status{margin:4px 0 0;padding:0;font-size:.85rem;color:#636e72;line-height:1.2}.new-google-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:10px;padding:12px;background:white;border:1px solid #dadce0;border-radius:12px;font-size:.95rem;font-weight:600;color:#3c4043;cursor:pointer;transition:background .2s}.new-google-btn:active{background:#f8f9fa}.new-google-btn img{width:18px;height:18px}.logged-in-actions{display:flex;justify-content:space-between;align-items:center;gap:12px}.support-code-box{flex:1;display:flex;align-items:center;gap:6px;padding:8px 12px;background:#f1f3f5;border-radius:10px;cursor:pointer;transition:background .2s}.support-code-box:active{background:#e9ecef}.support-code-label{font-size:.75rem;color:#636e72;font-weight:600}.support-code-value{font-size:.9rem;color:#2d3436;font-weight:800;font-family:monospace;letter-spacing:1px}.copy-icon{font-size:.8rem;opacity:.5}.uid-text{font-size:.75rem;color:#b2bec3;font-family:monospace}.mini-logout-btn{padding:6px 12px;background:#fff0f0;color:#ff5252;border:none;border-radius:8px;font-size:.8rem;font-weight:700;cursor:pointer}.new-settings-list{background:white;border-radius:24px;overflow:hidden;box-shadow:0 4px 20px #0000000d}.menu-item{display:flex;align-items:center;justify-content:space-between;padding:1.2rem 1.5rem;cursor:pointer;border-bottom:1px solid #f1f3f5;transition:background .2s}.menu-item:last-child{border-bottom:none}.menu-item:active{background:#f8f9fa}.menu-left{display:flex;align-items:center;gap:12px}.menu-icon{font-size:1.2rem}.menu-text{font-size:1rem;font-weight:600;color:#2d3436}.menu-right-val{display:flex;align-items:center;gap:8px}.current-lang{font-size:.9rem;color:#1565c0;font-weight:600}.arrow{color:#b2bec3;font-size:1.2rem}.version-item{cursor:default}.version-item:active{background:none}.version-info{font-size:.9rem;color:#b2bec3;font-weight:600}.language-options{display:flex;flex-direction:column;gap:12px}.lang-option-btn{width:100%;padding:1.2rem;background:#f8f9fa;border:2px solid transparent;border-radius:16px;font-size:1.1rem;font-weight:700;text-align:left;cursor:pointer;transition:all .2s}.lang-option-btn.active{background:#e3f2fd;border-color:#1565c0;color:#1565c0}.lang-option-btn:active{transform:scale(.98)}.nemo-screen{padding:0;display:flex;flex-direction:column;align-items:center;overflow:hidden;height:100%}.game-header{padding:5px 0;flex-shrink:0;display:flex;align-items:center;justify-content:center;gap:20px;width:100%}.hint-btn{padding:4px 12px;background-color:#ebf8ff;border:1px solid #90cdf4;border-radius:6px;color:#2b6cb0;font-size:12px;font-weight:700;cursor:pointer;transition:all .2s}.hint-btn:active{background-color:#bee3f8;transform:translateY(1px)}.nemo-scroll-container{overflow-x:hidden;overflow-y:auto;width:100%;flex:1;padding:5px;box-sizing:border-box;background-color:#f7fafc;display:flex;justify-content:center}.nemo-board{display:grid;grid-template-columns:auto repeat(var(--board-size),1fr);grid-template-rows:auto repeat(var(--board-size),auto);width:100%;max-width:450px;background:white;box-sizing:border-box}.nemo-col-clues-container,.nemo-row-clues-container,.nemo-grid{display:contents}.nemo-corner{grid-column:1;grid-row:1;background:white;position:sticky;top:0;left:0;z-index:10}.nemo-clue-col{display:flex;flex-direction:column;justify-content:flex-end;align-items:center;padding-bottom:4px;gap:2px;min-width:0;min-height:0;font-size:clamp(7px,2vw,11px);font-weight:600;line-height:1.1;background:white;position:sticky;top:0;z-index:5;box-sizing:border-box}.nemo-clue-col:first-of-type{border-left:1.5px solid #2d3748}.nemo-clue-col span.clue-done,.nemo-clue-row span.clue-done{color:#cbd5e0;opacity:.5;text-decoration:line-through}.nemo-clue-col.highlight{background-color:#fefcbf;color:#b7791f}.nemo-clue-row{display:flex;align-items:center;justify-content:flex-end;padding-right:6px;gap:5px;min-width:0;min-height:0;font-size:clamp(7px,2vw,11px);font-weight:600;line-height:1.1;background:white;position:sticky;left:0;z-index:5;box-sizing:border-box}.nemo-clue-row:first-of-type{border-top:1.5px solid #2d3748}.nemo-clue-row.highlight{background-color:#fefcbf;color:#b7791f}.nemo-cell{width:100%;height:100%;aspect-ratio:1 / 1;min-width:0;min-height:0;padding:0;margin:0;border-right:.5px solid #cbd5e0;border-bottom:.5px solid #cbd5e0;box-sizing:border-box;display:flex;align-items:center;justify-content:center;font-size:clamp(6px,2vw,12px);background:white;-webkit-user-select:none;user-select:none;touch-action:none}.nemo-cell[style*="grid-column: 2"]{border-left:1.5px solid #2d3748}.nemo-cell[style*="grid-row: 2"]{border-top:1.5px solid #2d3748}.nemo-cell.bold-right{border-right:1.5px solid #2d3748}.nemo-cell.bold-bottom{border-bottom:1.5px solid #2d3748}.nemo-cell[style*="grid-column: calc(var(--board-size) + 1)"]{border-right:1.5px solid #2d3748}.nemo-cell[style*="grid-row: calc(var(--board-size) + 1)"]{border-bottom:1.5px solid #2d3748}.nemo-cell.in-crosshair{background-color:#fffaf0}.nemo-cell.active-cursor{outline:1.5px solid #ecc94b;outline-offset:-1.5px;z-index:2;background-color:#fefcbf!important}.nemo-cell.filled{background-color:#2d3748!important}.nemo-cell.crossed{color:#a0aec0}.nemo-cell.memo-slash{color:#4299e1;font-weight:700}.nemo-cell.memoed{color:#4299e1}.nemo-controller{width:100%;max-width:480px;padding:15px 10px;background:#ffffff;border-top:1px solid #edf2f7;display:flex;justify-content:space-between;align-items:center;flex-shrink:0;box-sizing:border-box}.d-pad{display:flex;flex-direction:column;align-items:center;position:relative;width:185px;height:185px;transition:opacity .3s,filter .3s}.d-pad.inactive{opacity:.3;filter:grayscale(.8);pointer-events:auto}.d-mid{display:flex;align-items:center;justify-content:center;position:absolute;top:70px;left:0;width:100%;height:45px}.d-btn{background:#f7fafc;border:1px solid #e2e8f0;border-radius:10px;font-size:22px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:#4a5568;position:absolute;transition:background .1s,transform .1s;box-shadow:none}.d-btn.up{width:45px;height:70px;top:0;left:70px}.d-btn.up:active{transform:scale(.95)}.d-btn.down{width:45px;height:70px;bottom:0;left:70px}.d-btn.down:active{transform:scale(.95)}.d-btn.left{width:70px;height:45px;left:0;top:0;position:absolute}.d-btn.left:active{transform:scale(.95)}.d-btn.right{width:70px;height:45px;right:0;top:0;position:absolute}.d-btn.right:active{transform:scale(.95)}.d-center{width:45px;height:45px;background:transparent}.action-buttons{display:grid;grid-template-columns:repeat(6,1fr);grid-template-rows:auto auto;gap:10px;flex:1;max-width:240px;margin-left:10px;align-items:center}.act-btn{display:flex;align-items:center;justify-content:center;border-radius:16px;border:none;background:#f1f5f9;box-shadow:0 3px 6px #00000014;cursor:pointer;transition:all .2s;padding:0;width:100%}.act-btn.history-btn{height:45px;background:#fff;border:1.5px solid #edf2f7}.act-btn.history-btn .icon{font-size:20px;color:#718096}.act-btn.undo-btn{grid-column:1 / span 2;grid-row:1}.act-btn.memo{grid-column:3 / span 2;grid-row:1;height:65px;background:#e2e8f0}.act-btn.redo-btn{grid-column:5 / span 2;grid-row:1}.act-btn.cross{grid-column:1 / span 3;grid-row:2;height:65px;border:2px solid transparent}.act-btn.fill{grid-column:4 / span 3;grid-row:2;height:65px;background:#2d3748;border:2px solid transparent}.act-btn.cross.selected{border-color:#f56565;box-shadow:0 0 10px #f5656580;transform:translateY(-2px)}.act-btn.fill.selected{border-color:#4299e1;box-shadow:0 0 10px #4299e180;transform:translateY(-2px)}.act-btn.memo.active{background:#3182ce}.act-btn .icon{font-size:28px}.act-btn .label{display:none}.act-btn.fill .icon,.act-btn.memo.active .icon{color:#fff}.act-btn:active{transform:scale(.92);box-shadow:none}.victory-modal{background:white;padding:30px;border-radius:24px;text-align:center;width:85%;max-width:300px}.link-screen{padding:0;display:flex;flex-direction:column;align-items:center;overflow:hidden;height:100%;background-color:#fff}.link-board-container{width:100%;max-width:350px;aspect-ratio:1 / 1;padding:10px;box-sizing:border-box}.link-board{width:100%;height:100%;background-color:#f8fafc;border:4px solid #cbd5e0;border-radius:8px;position:relative;-webkit-user-select:none;user-select:none;touch-action:none;display:grid}.link-cell{width:100%;height:100%;border:.5px solid #e2e8f0;display:flex;align-items:center;justify-content:center;box-sizing:border-box;position:relative}.path-fill{position:absolute;width:100%;height:100%;z-index:1}.dot{width:40%;height:40%;border-radius:50%;z-index:10;position:relative;box-shadow:0 2px 4px #0000001a}.link-svg{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:5}.link-info{margin-top:15px;text-align:center;color:#64748b;font-size:14px}.game-header{padding:10px 0;display:flex;align-items:center;justify-content:center;gap:20px;width:100%}.hint-btn{padding:4px 12px;background-color:#ebf8ff;border:1px solid #90cdf4;border-radius:6px;color:#2b6cb0;font-size:12px;font-weight:700;cursor:pointer}.stars-display{display:flex;justify-content:center;gap:8px;margin-bottom:15px}.star{font-size:32px;color:#e2e8f0}.star.active{color:#ecc94b}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.6);display:flex;align-items:center;justify-content:center;z-index:1000}.victory-modal{background:white;padding:30px;border-radius:24px;text-align:center;width:80%;max-width:300px}.modal-btn{background:#2d3748;color:#fff;border:none;padding:12px 24px;border-radius:12px;font-size:16px;font-weight:700;cursor:pointer;width:100%;margin-top:15px}.privacy-policy-container{display:flex;flex-direction:column;min-height:100vh;background-color:#fff;color:#333;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}.privacy-content{padding:24px 20px;line-height:1.6;text-align:left;max-width:800px;margin:0 auto}.effective-date{font-size:14px;color:#888;margin-bottom:30px;display:block}section{margin-bottom:40px}section h3{font-size:18px;font-weight:700;margin:0 0 15px;color:#000}section p{font-size:15px;margin:0 0 10px;color:#333}section ul{padding-left:20px;margin:10px 0;list-style-type:disc}section li{font-size:15px;margin-bottom:8px;color:#333}.contact-info{background-color:#f9f9f9;padding:20px;border-radius:8px;margin-top:15px;border:1px solid #eee}.contact-info p{margin:0;font-size:15px;color:#000;font-weight:500}:root{--easy-bg: #e8f5e9;--easy-text: #2e7d32;--normal-bg: #e3f2fd;--normal-text: #1565c0;--hard-bg: #ffebee;--hard-text: #c62828;--primary-blue: #0052cc;--bg-selected: #bbdefb;--bg-related: #e3f2fd;--bg-same-num: #c8e6c9;--bg-error: #ffcdd2;--text-fixed: #2c3e50;--text-user: #0052cc}.start-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem 1rem;min-height:100%}.game-title{font-size:3rem;color:#2c3e50;font-weight:900;margin-bottom:2.5rem;text-shadow:2px 4px 8px rgba(0,0,0,.05)}.difficulty-card{background:#ffffff;padding:2.5rem 2rem;border-radius:28px;box-shadow:0 15px 40px #0000000f;width:100%;max-width:320px;text-align:center}.instruction{color:#6c757d;font-size:1.1rem;margin-bottom:2rem;font-weight:600}.difficulty-buttons{display:flex;flex-direction:column;gap:14px}.btn-diff{width:100%;padding:1.2rem;font-size:1.2rem;font-weight:800;border:none;border-radius:20px;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);display:flex;justify-content:space-between;align-items:center}.diff-stars{font-size:.9rem;font-weight:600;opacity:.8}.btn-diff:active{transform:scale(.96)}.btn-diff.easy{background-color:var(--easy-bg);color:var(--easy-text)}.btn-diff.normal{background-color:var(--normal-bg);color:var(--normal-text)}.btn-diff.hard{background-color:var(--hard-bg);color:var(--hard-text)}.page-container{padding:1.5rem 1rem;display:flex;flex-direction:column;align-items:center;min-height:100%}.difficulty-info{margin-bottom:24px;background:#f8f9fa;padding:8px 16px;border-radius:20px;font-weight:700;color:#495057}.star-summary{font-size:1.1rem}.level-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;width:100%;max-width:350px}.level-btn{aspect-ratio:1 / 1;border-radius:20px;display:flex;flex-direction:column;align-items:center;justify-content:center;border:none;cursor:pointer;transition:all .2s ease;position:relative;box-shadow:0 4px 12px #0000000f;padding-top:8px}.level-num{font-size:1.4rem;font-weight:800}.level-stars{font-size:.6rem;margin-top:2px;letter-spacing:-1px}.level-btn.cleared{background-color:var(--easy-bg);color:var(--easy-text)}.level-btn.current{background-color:#fff;color:var(--primary-blue);border:3px solid var(--primary-blue);animation:pulse 2s infinite}.level-btn.locked{background-color:#f1f3f5;color:#adb5bd;cursor:not-allowed}@keyframes pulse{0%{box-shadow:0 0 #0052cc66}70%{box-shadow:0 0 0 12px #0052cc00}to{box-shadow:0 0 #0052cc00}}.game-screen{background:#ffffff;display:flex;flex-direction:column;align-items:center;padding:1rem;box-sizing:border-box;min-height:100%}.game-header{margin-bottom:8px}.timer{font-size:1.2rem;font-weight:700;color:#495057;font-family:monospace}.timer:before{content:"⏱️ "}.sudoku-board{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);gap:2px;background-color:#343a40;width:100%;max-width:350px;aspect-ratio:1 / 1;border:2px solid #343a40;box-shadow:0 10px 25px #0000001a}.sudoku-block{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);gap:1px;background-color:#cbd5e0}.sudoku-cell{background-color:#fff;width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:clamp(1.1rem,5vw,1.5rem);cursor:pointer;position:relative}.sudoku-cell.fixed{color:var(--text-fixed);font-weight:800}.sudoku-cell.user-input{color:var(--text-user);font-weight:600}.sudoku-cell.selected{background-color:var(--bg-selected)!important}.sudoku-cell.related{background-color:var(--bg-related)}.sudoku-cell.same-number{background-color:var(--bg-same-num)}.sudoku-cell.error{background-color:var(--bg-error);color:#c62828!important}.controls{display:flex;flex-direction:column;gap:1.5rem;width:100%;max-width:400px;margin-top:20px;padding:0 8px}.action-pad{display:flex;justify-content:space-between;width:100%}.action-btn{display:flex;flex-direction:column;align-items:center;gap:4px;background:transparent;border:none;cursor:pointer;padding:8px 4px;border-radius:12px;transition:background-color .2s;flex:1}.action-btn:disabled{opacity:.3;cursor:not-allowed}.action-btn:active:not(:disabled){background-color:#f1f3f5}.action-btn.active{background-color:#e3f2fd}.action-btn.active .action-label{color:#0052cc;font-weight:700}.action-icon{font-size:1.4rem}.action-label{font-size:.75rem;color:#495057;font-weight:600}.number-pad-single{display:flex;justify-content:space-between;width:100%;gap:4px}.num-btn-single{flex:1;height:54px;background-color:#fff;border:1px solid #edf2f7;border-radius:10px;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:0 2px 4px #00000005;gap:2px}.num-btn-single:disabled{opacity:.2;cursor:not-allowed;background-color:#f8f9fa}.num-text{font-size:1.4rem;font-weight:800;color:#0052cc;line-height:1}.num-count{font-size:.65rem;color:#888;font-weight:600}.num-btn-single:active:not(:disabled){transform:scale(.92);background-color:#f8f9fa}.notes-grid{position:absolute;top:0;left:0;width:100%;height:100%;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);pointer-events:none;padding:0;box-sizing:border-box}.note-item{display:flex;align-items:center;justify-content:center;font-size:.6rem;color:#718096;font-weight:600;line-height:1;margin:0}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(44,62,80,.7);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1100}.victory-modal{background:white;padding:2.5rem 1.5rem;border-radius:32px;text-align:center;width:85%;max-width:300px}.modal-stars{font-size:2.5rem;margin-bottom:1rem}.modal-actions{display:flex;flex-direction:column;gap:12px;margin-top:20px}.modal-btn{border:none;padding:1.1rem;border-radius:18px;font-size:1.1rem;font-weight:800;width:100%;cursor:pointer;transition:all .2s}.modal-btn.next-btn{background:var(--primary-blue);color:#fff;box-shadow:0 4px 15px #0052cc4d}.modal-btn.next-btn:active{transform:scale(.96);box-shadow:0 2px 8px #0052cc33}.modal-btn.list-btn{background:#f1f3f5;color:#495057}.modal-btn.list-btn:active{background:#e9ecef}@media (min-width: 600px){.level-grid{grid-template-columns:repeat(5,1fr);max-width:500px}}:root{font-family:Pretendard,-apple-system,BlinkMacSystemFont,system-ui,Roboto,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#212529;background-color:#f8f9fa;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--primary-color: #0B5ED7;--thick-border: #343A40}*{box-sizing:border-box}html,body{margin:0;padding:0;width:100%;height:100%;overflow:hidden;background-color:#f0f2f5}#root{display:flex;flex-direction:column;height:100dvh;width:100%;max-width:500px;margin:0 auto;padding:0;background-color:#fff;box-shadow:0 0 15px #0000001a;text-align:center}h1{font-size:2.5rem;line-height:1.1;margin:0;color:var(--thick-border)}button{font-family:inherit}@media (prefers-color-scheme: light){:root{background-color:#fff}}