.font-jp,.noto-sans{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans JP,sans-serif}mark.search-highlight{background-color:var(--accent-yellow);color:var(--text-primary);padding:2px 0;border-radius:3px;font-weight:600}.dark-mode mark.search-highlight{color:var(--bg-main)}.handbook-content{overflow-wrap:break-word;word-break:break-word}.search-hidden{display:none!important}#overlay.active,.modal-backdrop.active{opacity:1;visibility:visible;transition-delay:0s}.cell-bg,.dict-card,.grammar-card,.progress-item-wrapper{padding:clamp(.75rem,3vw,1.25rem);transition:transform var(--transition-duration) var(--ease-out-quint),background-color var(--transition-duration) var(--ease-out-quint),box-shadow var(--transition-duration) var(--ease-out-quint);will-change:transform,box-shadow}.progress-item-wrapper{border-radius:var(--radius-lg)}.cell-bg,.dict-card,.grammar-card{background-color:var(--card-front-bg);border:1px solid 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ease;background-color:var(--text-secondary);-webkit-mask:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='currentColor' viewBox='0 0 20 20'%3E%3Cpath fill-rule='evenodd' d='M10 18a8 8 0 1 0 0-16 8 8 0 0 0 0 16M8.707 7.293a1 1 0 0 0-1.414 1.414L8.586 10l-1.293 1.293a1 1 0 1 0 1.414 1.414L10 11.414l1.293 1.293a1 1 0 0 0 1.414-1.414L11.414 10l1.293-1.293a1 1 0 0 0-1.414-1.414L10 8.586z' clip-rule='evenodd'/%3E%3C/svg%3E") no-repeat center;mask:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='currentColor' viewBox='0 0 20 20'%3E%3Cpath fill-rule='evenodd' d='M10 18a8 8 0 1 0 0-16 8 8 0 0 0 0 16M8.707 7.293a1 1 0 0 0-1.414 1.414L8.586 10l-1.293 1.293a1 1 0 1 0 1.414 1.414L10 11.414l1.293 1.293a1 1 0 0 0 1.414-1.414L11.414 10l1.293-1.293a1 1 0 0 0-1.414-1.414L10 8.586z' clip-rule='evenodd'/%3E%3C/svg%3E") no-repeat center}#mobile-search-input:not(:-moz-placeholder)+.clear-btn,#search-input:not(:-moz-placeholder)+.clear-btn{opacity:1;pointer-events:auto;transform:translateY(-50%) scale(1)}#mobile-search-input:not(:placeholder-shown)+.clear-btn,#search-input:not(:placeholder-shown)+.clear-btn{opacity:1;pointer-events:auto;transform:translateY(-50%) scale(1)}.clear-btn:hover{background-color:var(--text-primary)}.modal-wrapper{position:fixed;inset:0;z-index:999;display:flex;align-items:center;justify-content:center;padding:1rem;opacity:0;transition:opacity var(--transition-duration) var(--ease-out-quint);pointer-events:none}.modal-wrapper.active{opacity:1;pointer-events:auto}.modal-wrapper .modal-content-container{transition:transform var(--transition-duration) var(--ease-out-quint),opacity var(--transition-duration) var(--ease-out-quint);transform:scale(.95) translateY(20px);opacity:0;width:100%;max-width:32rem}.modal-wrapper.active .modal-content-container{transform:scale(1) translateY(0);opacity:1}.modal-content{display:flex;flex-direction:column;max-height:85vh;border-radius:var(--radius-xl);overflow:hidden;position:relative;background-image:radial-gradient(at 5% 5%,rgba(104,166,253,.15) 0,transparent 50%),radial-gradient(at 95% 95%,rgba(213,135,253,.15) 0,transparent 50%)}.modal-footer,.modal-header{flex-shrink:0;padding:1.5rem;display:flex;align-items:center}.modal-header{justify-content:space-between}.modal-footer{justify-content:flex-end;gap:.75rem}.modal-body{padding:0 1.5rem 1.5rem;overflow-y:auto;display:flex;flex-direction:column;gap:1.5rem}.modal-title{font-size:clamp(1.125rem,4vw,1.25rem);font-weight:700;color:var(--text-primary)}.modal-close-btn{color:var(--text-secondary);padding:.5rem;margin:-.5rem;border-radius:var(--radius-full);transition:color .2s ease,background-color .2s ease}.modal-close-btn:hover{color:var(--text-primary);background-color:var(--nav-hover-bg)}.tab-content.active{animation:fadeIn .5s var(--ease-out-quint) forwards}.nav-item:focus-visible:not(.active){outline:2px solid var(--accent-blue);outline-offset:2px}.notes-header-btn{opacity:0;max-width:0;margin-left:0!important;padding:0!important;border-width:0!important;overflow:hidden;will-change:max-width,margin-left,opacity;transition:max-width .4s var(--ease-out-quint),margin-left .4s var(--ease-out-quint),padding .4s var(--ease-out-quint),border-width .4s var(--ease-out-quint),opacity .3s var(--ease-out-quint) .1s}.notes-header-btn.visible{opacity:1;pointer-events:auto;max-width:40px;margin-left:.5rem!important;padding:.625rem!important;border-width:1px!important}.notes-header-btn svg{width:1.25rem;height:1.25rem}.card{perspective:1500px;transition:transform var(--transition-duration) var(--ease-out-quint);will-change:transform}.card:hover{transform:scale(1.05)}.card-inner{position:relative;width:100%;height:100%;transition:transform .7s cubic-bezier(.175,.885,.32,1.275);transform-style:preserve-3d}.card.is-flipped .card-inner{transform:rotateY(180deg)}.card-face{position:absolute;width:100%;height:100%;backface-visibility:hidden;-webkit-backface-visibility:hidden;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-lg);overflow:hidden}.card-face-front{background:var(--card-front-bg);border:1px solid var(--card-front-border)}.card-face-back{transform:rotateY(180deg);color:#fff;padding:1rem;flex-direction:column;justify-content:space-around;text-align:center}.search-placeholder-wrapper{height:100%;position:relative;overflow:hidden}.search-placeholder-box,.search-placeholder-wrapper{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}.search-placeholder-box{background:var(--glass-bg);border:1px solid var(--glass-border);box-shadow:0 4px 20px 0 var(--shadow-color);border-radius:var(--radius-xl);padding:2rem;width:100%;min-height:clamp(200px,35vh,300px)}.search-placeholder-notice{margin-top:1rem;padding:.75rem 1rem;border-radius:var(--radius-md);background-color:var(--bg-teal);border-left:4px solid var(--accent-teal);color:var(--text-secondary);font-size:.875rem;text-align:left;max-width:420px;width:100%;line-height:1.6}.kana-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:.5rem}.kana-grid .cell-bg{padding:.5rem;border-radius:var(--radius-md)}.kana-grid>div>p{white-space:nowrap}.kana-grid>div:empty{pointer-events:none}.kana-font{font-size:clamp(1.1rem,5vw,1.8rem)}.kana-font-digraph{font-size:clamp(.9rem,4vw,1.5rem)}.details-toggle,.learn-toggle{display:inline-flex;align-items:center;justify-content:center;cursor:pointer;position:absolute;transition:transform var(--transition-duration) var(--ease-out-quint),background-color var(--transition-duration) var(--ease-out-quint),box-shadow var(--transition-duration) var(--ease-out-quint);will-change:transform,background-color,box-shadow;z-index:10;width:30px;height:30px;border-radius:var(--radius-full);background-color:hsla(220,9%,46%,.2)}#pin-toggle.pinned{border-color:var(--pin-color)}#pin-toggle.pinned svg{fill:var(--pin-color);animation:pin-icon-rotate .5s var(--ease-out-quint) forwards}.learn-toggle{top:10px;right:10px}.details-toggle{top:10px;left:10px}.notes-header-btn.has-note{animation:note-pulse 1.5s infinite}.dark-mode .notes-header-btn.has-note,.notes-header-btn.has-note{border:1px solid var(--accent-orange)}.notes-header-btn.has-note svg{fill:var(--accent-orange)}.learn-toggle.learned{background-color:var(--accent-green);animation:checkmark-pop .4s var(--ease-out-quint)}.learn-toggle svg{color:var(--accent-green);transition:color .4s ease}.learn-toggle.learned svg{color:#fff}.details-toggle svg{transition:color .4s ease}.dark-mode .details-toggle svg,.details-toggle svg{color:var(--text-primary)}#notes-modal .modal-content{background-color:hsla(53,98%,83%,.85);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);color:#3d3d3d;border-radius:var(--radius-xl);border:1px solid #e7d18c;box-shadow:5px 5px 15px rgba(0,0,0,.15)}#notes-modal .modal-header{border-bottom:2px dashed #d1c08a;padding-bottom:1rem}#notes-modal .modal-title{color:#594a25}#notes-modal .modal-close-btn{color:#8c7a4b}#notes-modal .modal-close-btn:hover{background-color:rgba(0,0,0,.08)}#notes-modal #notes-textarea{color:#3d3d3d;font-family:Noto Sans JP,sans-serif;font-size:1.1rem;line-height:1.8;background-color:transparent;width:100%;border:none;outline:none;resize:vertical;min-height:150px}#notes-modal #notes-textarea::-moz-placeholder{color:#a0926d}#notes-modal #notes-textarea::placeholder{color:#a0926d}#notes-modal .modal-footer{border-top:none;justify-content:space-between;align-items:center;padding-top:.5rem}#notes-modal #note-info-display{font-family:monospace;color:#8c7a4b;font-size:.8rem}#notes-modal #notes-save-btn{background-color:#f9bf2d;color:#594a25;font-weight:600}#notes-modal #notes-save-btn:hover{background-color:#ffca43}.responsive-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1rem}.table-responsive-wrapper{overflow-x:auto;width:100%;-webkit-overflow-scrolling:touch;border:1px solid var(--glass-border);border-radius:var(--radius-lg);margin:1rem 0}.table-responsive-wrapper table{width:100%;min-width:600px;border-collapse:collapse}.grammar-grid{display:flex;flex-direction:column;gap:1rem}.grammar-card h4{font-size:1rem;line-height:1.4}.grammar-card .grammar-description{line-height:1.6}.grammar-example{background-color:var(--bg-orange);padding:.75rem 1rem;border-radius:var(--radius-sm);border-left:4px solid var(--accent-orange);line-height:1.7}.grammar-description b,.grammar-example b{color:var(--text-primary);font-weight:600}.cheatsheet-card{background-color:var(--card-front-bg);border:1px solid var(--card-front-border);border-radius:var(--radius-lg);margin-bottom:1rem;display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;padding:1.5rem;transition:transform .2s ease,box-shadow .2s ease}.cheatsheet-card:hover{transform:translateY(-5px);box-shadow:0 12px 22px -6px var(--shadow-color)}.cheatsheet-particles{font-weight:700;font-size:1.1rem;color:var(--text-primary);margin-bottom:.5rem}.cheatsheet-usage{color:var(--text-secondary);line-height:1.6}.cheatsheet-example{color:var(--text-secondary);line-height:1.7;background-color:rgba(0,0,0,.03);padding:1rem;border-radius:var(--radius-md)}.dark-mode .cheatsheet-example{background-color:hsla(0,0%,100%,.03)}@media (max-width:768px){.cheatsheet-card{grid-template-columns:1fr;gap:1rem;padding:1.25rem}}.sidebar-control-group{display:flex;flex-direction:row;justify-content:space-between;align-items:center;gap:.625rem;width:100%}.sidebar-control-label{font-size:.875rem;font-weight:600;color:var(--text-secondary);padding-left:.25rem}.import-button{border:1px solid var(--accent-blue);background-color:transparent;color:var(--accent-blue)}.import-button:hover{background-color:var(--accent-blue);color:#fff}.modal-input{width:100%;padding:.875rem 1rem;border-radius:var(--radius-md);color:var(--text-primary);background-color:hsla(0,0%,100%,.4);border:1px solid var(--glass-border);transition:border-color .2s ease,box-shadow .2s ease}.dark-mode .modal-input{background-color:rgba(0,0,0,.1)}.modal-input::-moz-placeholder{color:var(--text-secondary)}.modal-input::placeholder{color:var(--text-secondary)}.modal-input:focus{outline:none;border-color:var(--accent-blue);box-shadow:0 0 0 3px var(--accent-blue)}#file-import-area{border:2px dashed var(--text-secondary);opacity:.7;transition:border-color .4s ease,background-color .4s ease,opacity .4s ease;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:130px;border-radius:var(--radius-lg)}#file-import-area.drag-active,#file-import-area:hover{opacity:1;border-color:var(--accent-blue)}#file-import-area.drag-active{background-color:rgba(59,130,246,.1)}#file-import-area.state-preview{border-style:solid;border-color:var(--glass-border);background-color:rgba(255,255,0,.2);cursor:default;padding:1.25rem;text-align:left;align-items:flex-start}.dark-mode #file-import-area.state-preview{background-color:rgba(0,0,0,.05)}.preview-item{background-color:var(--card-front-bg);padding:.75rem 1.25rem;border-radius:var(--radius-md);border:1px solid var(--glass-border);display:flex;justify-content:space-between;align-items:center}.preview-item+.preview-item{margin-top:.75rem}@media (max-width:480px){.modal-footer{gap:.75rem}.modal-button{padding:.875rem 1rem}.modal-body{padding:0 1rem 1rem}.modal-footer,.modal-header{padding:1rem}}.upload-icon{width:2.5rem;height:2.5rem;color:var(--text-secondary);margin-bottom:.75rem}.upload-icon .arrow{animation:upload-arrow-animation 1.5s var(--ease-in-out-quad) infinite}.progress-item-wrapper.is-highlighted{animation:highlight-progress 1.5s var(--ease-out-quint)}#kanji-detail-modal.active{display:flex;opacity:1;pointer-events:auto}#kanji-detail-modal .glass-effect{background-image:radial-gradient(at 5% 5%,rgba(104,166,253,.15) 0,transparent 50%),radial-gradient(at 95% 95%,rgba(213,135,253,.15) 0,transparent 50%)}#kanji-detail-modal .text-5xl{font-size:clamp(2.5rem,10vw,3rem)}#kanji-detail-modal .text-xl{font-size:clamp(1.125rem,5vw,1.25rem)}#kanji-detail-modal .text-sm{font-size:clamp(.9rem,4vw,1rem)}#kanji-detail-modal .text-xs{font-size:clamp(.8rem,3.5vw,.875rem)}@media (max-width:480px){#kanji-detail-modal .p-6{padding:1rem}}.border-glass-border{border-color:var(--glass-border)}.with-furigana{font-size:1.2rem;line-height:2.4}.kanji-modal-translation{font-size:.875rem;color:var(--text-secondary)}.kanji-modal-scroll-content{position:relative;scrollbar-width:none;-ms-overflow-style:none}.kanji-modal-scroll-content::-webkit-scrollbar{display:none}.fade-indicator{content:"";position:absolute;bottom:0;left:0;right:0;height:75px;background:linear-gradient(to bottom,transparent,var(--bg-main));pointer-events:none;transition:opacity .3s ease-in-out;border-bottom-left-radius:var(--radius-xl);border-bottom-right-radius:var(--radius-xl)}.dict-section-header{font-size:clamp(1.1rem,4vw,1.25rem);font-weight:700;color:var(--text-primary);padding-bottom:.5rem;margin-bottom:1rem;border-bottom:1px solid var(--glass-border)}.dict-grid{display:flex;flex-direction:column;gap:1rem}.dict-vocab-header{display:flex;align-items:baseline;gap:.75rem;margin-bottom:.75rem}.dict-vocab-term{font-size:clamp(1.1rem,4vw,1.25rem);font-weight:700;color:var(--text-primary);font-family:Noto Sans JP,sans-serif}.dict-vocab-definitions,.dict-vocab-reading{font-size:clamp(.85rem,3vw,.9rem);color:var(--text-secondary)}.dict-vocab-definitions{line-height:1.7;padding-top:.75rem;border-top:1px solid var(--glass-border)}.dict-vocab-definitions p{margin-bottom:.5rem}.dict-vocab-definitions p:last-child{margin-bottom:0}.dict-vocab-pos{font-size:.75rem;opacity:.7;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;margin-left:.5rem}.dict-kanji-header{display:flex;align-items:center;gap:1rem;margin-bottom:.75rem}.dict-kanji-char{font-size:clamp(1.8rem,8vw,2rem);font-weight:700;color:var(--accent-teal);font-family:Noto Sans JP,sans-serif;line-height:1}.dict-kanji-readings{font-family:Noto Sans JP,sans-serif;color:var(--text-secondary);font-size:.875rem}.dict-kanji-readings .reading-label{font-weight:600;color:var(--text-primary);margin-right:.5rem}.dict-kanji-meanings{margin-top:.75rem;padding-top:.75rem;border-top:1px solid var(--glass-border);font-size:clamp(.9rem,3.5vw,.95rem);line-height:1.6;color:var(--text-primary)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.anim-fade-in,.content-anim-fade-in{animation:fadeIn .5s var(--ease-out-quint) forwards}.content-loader-wrapper{display:flex;justify-content:center;align-items:center;width:100%;min-height:300px}@keyframes anim-fade-out{0%{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(10px) scale(.98)}}.anim-fade-out{animation:anim-fade-out .4s var(--ease-out-quint) forwards}@keyframes pin-icon-rotate{0%{transform:rotate(0deg) scale(1)}50%{transform:rotate(-20deg) 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var(--ease-out-quint),opacity .4s var(--ease-in-out-quad) .1s,visibility 0s,margin-bottom .4s var(--ease-out-quint)}.accordion-button{padding:1.25rem;font-size:1.125rem;transition:background-color .4s var(--ease-out-quint)}.accordion-button:hover{background-color:var(--nav-hover-bg)}.accordion-button .accordion-icon{transition:transform .4s var(--ease-out-quint)}.accordion-content{max-height:0;overflow:hidden;transition:max-height .7s var(--ease-out-quint),padding .7s var(--ease-out-quint)}.open+.accordion-content{max-height:5000px}.open .accordion-icon{transform:rotate(180deg)}.lang-switch button:hover:not(.active){color:var(--text-primary);background-color:var(--nav-hover-bg)}.level-switch{display:flex;flex-wrap:nowrap;gap:.5rem;background-color:transparent;padding-top:5px;padding-bottom:8px;overflow-x:auto;scroll-behavior:smooth;-ms-overflow-style:none;scrollbar-width:none}.level-switch::-webkit-scrollbar{display:none}.level-switch-item-wrapper{position:relative;display:flex;align-items:center;flex-shrink:0}.level-switch .level-switch-button{background-color:var(--switch-bg);color:var(--lang-inactive-color,#1f2937);padding:.5rem 1rem;border-radius:var(--radius-full);border:none;cursor:pointer;font-weight:600;font-size:.875rem;transition:all .4s var(--ease-in-out-quad)}.level-switch .level-switch-button:hover:not(.active){color:var(--text-primary);transform:translateY(-2px)}.level-switch .level-switch-button.active{background-color:var(--accent-blue);color:#fff;font-weight:700;box-shadow:0 4px 12px -2px rgba(59,130,246,.5);transform:translateY(-2px);pointer-events:none;cursor:default;opacity:1}.delete-level-btn{position:absolute;right:-5px;top:-5px;z-index:10;padding:4px;border-radius:var(--radius-full);background-color:var(--card-front-bg);border:1px solid var(--glass-border);color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transform:scale(.8);transition:all .2s var(--ease-out-quint)}.level-switch-item-wrapper:hover .delete-level-btn{opacity:1;pointer-events:auto;transform:scale(1)}.delete-level-btn:hover{background-color:var(--color-danger-bg);color:var(--color-danger);transform:scale(1.15)}.sidebar-pin-btn{position:absolute;right:.5rem;top:50%;transform:translateY(-50%);width:28px;height:28px;padding:6px;border-radius:var(--radius-full);background-color:transparent;border:none;color:var(--text-secondary);cursor:pointer;display:none;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:all .2s var(--ease-out-quint)}@media (min-width:1201px){#nav-progress-tab{display:none}}@media (min-width:769px){.sidebar-pin-btn{display:flex}}.nav-item-wrapper.is-pinned .sidebar-pin-btn,.nav-item-wrapper:hover .sidebar-pin-btn{opacity:1;pointer-events:auto}.sidebar-pin-btn.is-pinned,.sidebar-pin-btn:hover{background-color:var(--nav-hover-bg);transform:translateY(-50%) scale(1.1)}.sidebar-pin-btn.is-pinned{background-color:transparent}.sidebar-pin-btn svg{width:100%;height:100%;fill:var(--text-secondary);transition:fill .2s ease,transform .2s ease}.sidebar-pin-btn:hover svg{fill:var(--pin-color)}.sidebar-pin-btn.is-pinned svg{fill:var(--accent-blue)!important;transform:scale(1.1)}.dark-mode .sidebar-pin-btn.is-pinned svg{fill:var(--pin-color)!important}.nav-item.active+.sidebar-pin-btn.is-pinned svg{fill:#fff!important}.progress-container{width:100%;height:8px;background-color:var(--progress-track-color);border-radius:var(--radius-full);overflow:hidden;transition:transform .4s var(--ease-out-quint),box-shadow .4s var(--ease-out-quint);will-change:transform,box-shadow}.progress-container:hover{transform:translateY(-2px);box-shadow:0 4px 12px var(--shadow-color)}.progress-fill{height:100%;background-color:var(--accent-blue);border-radius:var(--radius-full);transition:width .8s var(--ease-out-quint),stroke-dashoffset 1.2s var(--ease-out-quint)}#progress-overview::-webkit-scrollbar,.left-sidebar::-webkit-scrollbar{width:8px}#progress-overview::-webkit-scrollbar-track,.left-sidebar::-webkit-scrollbar-track{background:transparent}#progress-overview::-webkit-scrollbar-thumb,.left-sidebar::-webkit-scrollbar-thumb{background-color:hsla(220,9%,46%,.25);border-radius:var(--radius-full);border:2px solid transparent;background-clip:content-box}#progress-overview::-webkit-scrollbar-thumb:hover,.left-sidebar::-webkit-scrollbar-thumb:hover{background-color:hsla(220,9%,46%,.4)}.theme-switch-wrapper{display:flex;align-items:center;gap:.5rem}.theme-switch{position:relative;display:inline-block;width:50px;height:26px}.theme-switch input{opacity:0;width:0;height:0}.slider{cursor:pointer;top:0;left:0;right:0;bottom:0;background-color:var(--switch-bg);transition:background-color .4s var(--ease-in-out-quad)}.slider,.slider:before{position:absolute;border-radius:var(--radius-full)}.slider:before{content:"☀️";height:18px;width:18px;left:4px;bottom:4px;background-color:#fff;transition:transform .4s var(--ease-out-quint);display:flex;align-items:center;justify-content:center;font-size:12px}input:checked+.slider:before{transform:translateX(24px);content:"🌙"}@media (max-width:768px){.search-placeholder-box{padding:1.5rem}.accordion-button{padding:1rem;font-size:1rem}}@media (max-width:480px){.cell-bg,.dict-card,.grammar-card,.progress-item-wrapper{padding:1rem}.responsive-grid{gap:.75rem;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.kana-grid{gap:.25rem}.kana-grid .cell-bg{padding:.25rem}}@media (min-width:768px){.md\:hidden{display:none}}.accordion-content{content-visibility:auto}