@import"https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;700&display=swap";.header{background-color:#fff;border-bottom:1px solid #e4e6eb;position:sticky;top:0;z-index:100}.header-container{max-width:1280px;margin:0 auto;padding:16px 24px;display:flex;justify-content:space-between;align-items:center}.header-brand{background:none;border:none;cursor:pointer;padding:0}.brand-text{font-size:18px;font-weight:700;color:#222}.mobile-menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}.hamburger{display:flex;flex-direction:column;gap:4px;width:24px}.hamburger span{display:block;height:2px;background-color:#222;transition:all .2s}.hamburger.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}.hamburger.open span:nth-child(2){opacity:0}.hamburger.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}.header-nav{display:flex;align-items:center;gap:16px}.nav-link{background:none;border:none;padding:8px 16px;cursor:pointer;font-size:15px;color:#444;border-radius:6px;transition:all .15s}.nav-link:hover{background-color:#fafbfc}.nav-link.active{color:#222;background-color:#fafbfc}.nav-link.primary{background-color:#38c6d9;color:#fff}.nav-link.primary:hover{background-color:#2eb3c5}.user-menu{position:relative}.user-button{display:flex;align-items:center;gap:8px;background:none;border:none;cursor:pointer;padding:4px 12px;border-radius:6px;transition:background-color .15s;min-height:44px}.user-button:hover{background-color:#fafbfc}.user-avatar{width:32px;height:32px;border-radius:50%;background-color:#38c6d9;color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0}.user-name{font-size:15px;color:#222;line-height:32px;display:flex;align-items:center}.dropdown-arrow{font-size:13px;color:#444;transition:transform .15s;line-height:32px;display:flex;align-items:center}.dropdown-arrow.open{transform:rotate(180deg)}.dropdown-menu{position:absolute;top:calc(100% + 8px);right:0;background:#fff;border:1px solid #e4e6eb;border-radius:6px;box-shadow:0 4px 12px #0000001a;min-width:200px;padding:8px 0}.dropdown-item{display:flex;align-items:center;gap:12px;width:100%;padding:12px 16px;border:none;background:none;cursor:pointer;font-size:15px;color:#444;text-align:left;transition:background-color .15s}.dropdown-item:hover{background-color:#fafbfc}.dropdown-icon{font-size:15px}.dropdown-divider{height:1px;background-color:#e4e6eb;margin:8px 0}@media(max-width:768px){.header-container{padding:16px}.mobile-menu-toggle{display:block}.header-nav{position:fixed;top:65px;left:0;right:0;background-color:#fff;border-bottom:1px solid #e4e6eb;flex-direction:column;align-items:stretch;padding:16px;gap:8px;transform:translateY(-100%);opacity:0;pointer-events:none;transition:all .2s}.header-nav.mobile-open{transform:translateY(0);opacity:1;pointer-events:auto}.nav-link{width:100%;text-align:left}.user-menu{width:100%}.user-button{width:100%;justify-content:flex-start}.dropdown-menu{position:static;box-shadow:none;border:none;margin-top:8px}}@media(max-width:375px){.brand-text{font-size:15px}.user-name{display:none}}.login-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background-color:#f5f5f5;padding:20px}.login-card{background:#fff;border-radius:8px;box-shadow:0 4px 6px #0000001a;padding:40px;max-width:400px;width:100%;text-align:center}.login-card h2{margin-bottom:16px;color:#333;font-size:24px}.login-description{color:#666;margin-bottom:24px;line-height:1.5}.login-form{text-align:left;margin-bottom:24px}.form-group{margin-bottom:16px}.form-group label{display:block;margin-bottom:6px;color:#333;font-weight:500}.form-group input{width:100%;padding:12px;border:1px solid #d1d5db;border-radius:4px;font-size:16px;box-sizing:border-box}.form-group input:focus{outline:none;border-color:#0078d4;box-shadow:0 0 0 3px #0078d41a}.form-group input:disabled{background-color:#f3f4f6;cursor:not-allowed}.login-button{background-color:#0078d4;color:#fff;border:none;border-radius:4px;padding:12px 24px;font-size:16px;cursor:pointer;width:100%;margin-bottom:16px;transition:background-color .2s}.login-button:hover:not(:disabled){background-color:#106ebe}.login-button:disabled{background-color:#ccc;cursor:not-allowed}.error-message{background-color:#fef2f2;border:1px solid #fecaca;color:#dc2626;padding:12px;border-radius:4px;margin-bottom:16px}.success-message{background-color:#f0f9ff;border:1px solid #bae6fd;color:#0369a1;padding:12px;border-radius:4px;margin-top:16px}.user-info{text-align:left;background-color:#f9fafb;padding:16px;border-radius:4px;margin:16px 0}.user-info p{margin:8px 0;color:#374151}.login-info{margin-top:24px;padding-top:16px;border-top:1px solid #e5e7eb}.login-info p{color:#666;font-size:14px;margin:0}.login-hint{margin-top:12px;text-align:center}.login-hint p{color:#666;font-size:12px;margin:0}._container_10ths_1{padding:2rem;max-width:1200px;margin:0 auto}._heading_10ths_7{color:#222;font-size:18px;font-weight:700;margin-bottom:1.5rem}._searchWrapper_10ths_14{margin-bottom:2rem}._searchInput_10ths_18{width:100%;padding:.75rem;border:1px solid #e4e6eb;border-radius:6px;font-size:15px;font-family:Noto Sans JP,sans-serif;background-color:#fff;box-sizing:border-box}._searchInput_10ths_18:focus{outline:none;border-color:#38c6d9}._filterRow_10ths_34{display:flex;gap:8px;margin-bottom:1.5rem;align-items:center;flex-wrap:wrap}._filterSelect_10ths_42{padding:.5rem .75rem;border:1px solid #e4e6eb;border-radius:6px;font-size:13px;font-family:Noto Sans JP,sans-serif;background-color:#fff;color:#444;cursor:pointer}._filterSelect_10ths_42:focus{outline:none;border-color:#38c6d9}._clearFilters_10ths_58{padding:.5rem .75rem;border:none;border-radius:6px;font-size:13px;font-family:Noto Sans JP,sans-serif;background:none;color:#38c6d9;cursor:pointer}._clearFilters_10ths_58:hover{text-decoration:underline}._loading_10ths_73{padding:3rem;text-align:center;color:#888;font-size:15px}._errorBanner_10ths_80{padding:1rem;margin-bottom:1rem;background-color:#ffe5e5;border:1px solid #e4e6eb;border-radius:6px;color:#ff5252;font-size:13px}._deckGrid_10ths_90{display:grid;gap:1rem}._emptyState_10ths_95{padding:3rem;text-align:center;color:#888;font-size:15px;border:1px solid #e4e6eb;border-radius:6px;background-color:#fafbfc}._deckRow_10ths_105{padding:1.25rem 1.5rem;border:1px solid #e4e6eb;border-radius:6px;background-color:#fff;cursor:pointer;transition:border-color .15s,box-shadow .15s}._deckRow_10ths_105:hover{border-color:#38c6d9;box-shadow:0 2px 8px #38c6d914}._deckTitle_10ths_119{font-size:18px;font-weight:700;color:#222;margin-bottom:.25rem}._deckDescription_10ths_126{font-size:15px;color:#444;margin:0}._deckMeta_10ths_132{display:flex;gap:1rem;margin-top:.5rem;font-size:13px;color:#888}._backdrop_y0tpr_1{position:fixed;inset:0;background-color:#00000059;display:flex;align-items:center;justify-content:center;z-index:1000}._modal_y0tpr_11{width:100%;max-width:420px;background-color:#fff;border-radius:8px;box-shadow:0 16px 32px #0000001f;padding:2rem;font-family:Noto Sans JP,sans-serif}._title_y0tpr_21{font-size:18px;font-weight:700;color:#222;margin-bottom:1rem}._grid_y0tpr_28{display:grid;gap:1rem}._label_y0tpr_33{display:block;font-size:15px;color:#222;margin-bottom:.5rem}._input_y0tpr_40{width:100%;padding:.75rem;border:1px solid #e4e6eb;border-radius:6px;font-size:15px;font-family:Noto Sans JP,sans-serif}._error_y0tpr_49{font-size:13px;color:#ff5252;margin-top:.5rem}._actions_y0tpr_55{display:flex;justify-content:flex-end;gap:.75rem;margin-top:1.5rem}._button_y0tpr_62{padding:.75rem 1.5rem;border-radius:6px;font-size:15px;font-family:Noto Sans JP,sans-serif;font-weight:700;cursor:pointer;border:none}._cancel_y0tpr_72{background-color:#dde3ea;color:#444}._confirm_y0tpr_77{background-color:#38c6d9;color:#fff}._disabled_y0tpr_82{background-color:#dde3ea;color:#888;cursor:not-allowed}._container_o6egt_1{padding:2rem;max-width:800px;margin:0 auto}._backButton_o6egt_7{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem 0;background:none;border:none;cursor:pointer;font-size:15px;font-family:Noto Sans JP,sans-serif;color:#444;margin-bottom:1.5rem}._backButton_o6egt_7:hover{color:#222}._card_o6egt_25{background-color:#fff;border:1px solid #e4e6eb;border-radius:6px;padding:2rem}._title_o6egt_32{font-size:18px;font-weight:700;color:#222;margin-bottom:.5rem}._description_o6egt_39{font-size:15px;color:#444;margin-bottom:1.5rem;line-height:1.5}._metaGrid_o6egt_46{display:flex;flex-wrap:wrap;gap:1rem;margin-bottom:2rem}._metaItem_o6egt_53{padding:.75rem 1rem;background-color:#fafbfc;border:1px solid #e4e6eb;border-radius:6px}._metaLabel_o6egt_60{font-size:13px;color:#888;margin-bottom:.25rem}._metaValue_o6egt_66{font-size:15px;color:#222;font-weight:700}._actions_o6egt_72{display:flex;gap:.75rem;align-items:center}._primaryButton_o6egt_78{padding:.75rem 1.5rem;border-radius:6px;font-size:15px;font-family:Noto Sans JP,sans-serif;font-weight:700;border:none;cursor:pointer;background-color:#38c6d9;color:#fff;transition:background-color .15s}._primaryButton_o6egt_78:hover{background-color:#2eb3c5}._primaryButton_o6egt_78:disabled{background-color:#dde3ea;color:#888;cursor:not-allowed}._secondaryButton_o6egt_101{padding:.75rem 1.5rem;border-radius:6px;font-size:15px;font-family:Noto Sans JP,sans-serif;font-weight:700;border:1px solid #e4e6eb;cursor:pointer;background-color:#fff;color:#444;transition:background-color .15s}._secondaryButton_o6egt_101:hover{background-color:#fafbfc}._statusBadge_o6egt_118{display:inline-block;padding:.25rem .75rem;border-radius:6px;font-size:13px;font-weight:700;margin-bottom:1.5rem}._statusLearning_o6egt_127{background-color:#e8f5e8;color:#22c55e}._statusProcessing_o6egt_132{background-color:#fff3cd;color:#d97706}._statusFailed_o6egt_137{background-color:#ffe5e5;color:#ff5252}._loading_o6egt_142{padding:3rem;text-align:center;color:#888;font-size:15px}._errorBanner_o6egt_149{padding:1rem;margin-bottom:1rem;background-color:#ffe5e5;border:1px solid #e4e6eb;border-radius:6px;color:#ff5252;font-size:13px}._processingContainer_o6egt_159{margin-bottom:1.5rem}._processingText_o6egt_163{font-size:13px;color:#444;margin-bottom:.5rem}._progressBarContainer_o6egt_169{width:200px;height:4px;background-color:#e4e6eb;border-radius:2px;overflow:hidden}._progressBar_o6egt_169{height:100%;width:30%;background-color:#38c6d9;border-radius:2px;animation:_progressAnimation_o6egt_1 1.5s ease-in-out infinite}@keyframes _progressAnimation_o6egt_1{0%{transform:translate(-100%);width:30%}50%{transform:translate(100%);width:50%}to{transform:translate(300%);width:30%}}._sampleCards_o6egt_202{margin-top:2rem}._sampleCardsTitle_o6egt_206{font-size:18px;font-weight:700;color:#222;margin:0 0 1rem;display:flex;align-items:baseline;gap:.75rem}._sampleCardsCount_o6egt_216{font-size:13px;font-weight:400;color:#888}._sampleCardsList_o6egt_222{border:1px solid #e4e6eb;border-radius:6px;overflow:hidden}._sampleCardRow_o6egt_228{display:grid;grid-template-columns:1fr auto 1fr;align-items:stretch;border-bottom:1px solid #e4e6eb}._sampleCardRow_o6egt_228:last-child{border-bottom:none}._sampleCardFront_o6egt_239{padding:.75rem 1rem;font-size:15px;color:#222;overflow:hidden;line-height:1.5}._sampleCardDivider_o6egt_247{width:1px;background-color:#e4e6eb}._sampleCardBack_o6egt_252{padding:.75rem 1rem;font-size:15px;color:#444;overflow:hidden;line-height:1.5;background-color:#fafbfc}._sampleCardFront_o6egt_239 img,._sampleCardBack_o6egt_252 img{max-width:100%;max-height:60px;width:auto;height:auto;display:inline-block;vertical-align:middle;border-radius:4px;object-fit:contain}._sampleCardFront_o6egt_239 audio,._sampleCardBack_o6egt_252 audio{display:none}._backdrop_luvl2_1{position:fixed;inset:0;background-color:#00000059;display:flex;align-items:center;justify-content:center;z-index:1000}._dialog_luvl2_11{width:100%;max-width:360px;background-color:#fff;border-radius:8px;box-shadow:0 16px 32px #0000001f;padding:1.75rem;font-family:Noto Sans JP,sans-serif}._title_luvl2_21{font-size:18px;font-weight:700;color:#222;margin-bottom:1rem}._message_luvl2_28{font-size:15px;color:#444;margin-bottom:1.5rem}._actions_luvl2_34{display:flex;justify-content:flex-end;gap:.75rem}._buttonBase_luvl2_40{padding:.75rem 1.5rem;border-radius:6px;font-size:15px;font-family:Noto Sans JP,sans-serif;font-weight:700;cursor:pointer;border:none}._cancel_luvl2_50{background-color:#dde3ea;color:#444}._confirm_luvl2_55{background-color:#38c6d9;color:#fff}._disabled_luvl2_60{background-color:#dde3ea;color:#888;cursor:not-allowed}._container_hr301_1{padding:2rem;max-width:1200px;margin:0 auto}._heading_hr301_7{color:#222;font-size:18px;font-weight:700;margin-bottom:1.5rem}._loading_hr301_14{padding:3rem;text-align:center;color:#888;font-size:15px}._errorBanner_hr301_21{padding:1rem;margin-bottom:1rem;background-color:#ffe5e5;border:1px solid #e4e6eb;border-radius:6px;color:#ff5252;font-size:13px}._deckGrid_hr301_31{display:grid;gap:1rem}._emptyState_hr301_36{padding:3rem;text-align:center;color:#888;font-size:15px;border:1px solid #e4e6eb;border-radius:6px;background-color:#fafbfc}._deckRow_hr301_46{padding:1.25rem 1.5rem;border:1px solid #e4e6eb;border-radius:6px;background-color:#fff;display:flex;justify-content:space-between;align-items:center;gap:1rem}._deckContent_hr301_57{flex:1}._deckTitle_hr301_61{font-size:18px;font-weight:700;color:#222;margin-bottom:.25rem}._deckDescription_hr301_68{font-size:15px;color:#444;margin:0}._deckStatus_hr301_74{margin-top:.5rem}._statusProcessing_hr301_78{font-size:13px;color:#d97706}._statusFailed_hr301_83{font-size:13px;color:#ff5252}._processingContainer_hr301_88{display:flex;flex-direction:column;gap:.5rem}._processingText_hr301_94{font-size:13px;color:#444}._progressBarContainer_hr301_99{width:200px;height:4px;background-color:#e4e6eb;border-radius:2px;overflow:hidden}._progressBar_hr301_99{height:100%;width:30%;background-color:#38c6d9;border-radius:2px;animation:_progressAnimation_hr301_1 1.5s ease-in-out infinite}@keyframes _progressAnimation_hr301_1{0%{transform:translate(-100%);width:30%}50%{transform:translate(100%);width:50%}to{transform:translate(300%);width:30%}}._deckActions_hr301_130{display:flex;gap:.75rem;align-items:center}._primaryButton_hr301_136{padding:.75rem 1.5rem;border-radius:6px;font-size:15px;font-family:Noto Sans JP,sans-serif;font-weight:700;border:none;cursor:pointer;background-color:#38c6d9;color:#fff;white-space:nowrap;transition:background-color .15s}._primaryButton_hr301_136:hover{background-color:#2eb3c5}._primaryButton_hr301_136:disabled{background-color:#dde3ea;color:#888;cursor:not-allowed}._menuWrapper_hr301_160{position:relative}._menuButton_hr301_164{padding:.5rem .75rem;border-radius:6px;border:1px solid #e4e6eb;background-color:#fff;color:#444;cursor:pointer;font-size:15px;font-family:Noto Sans JP,sans-serif;font-weight:700}._menuButton_hr301_164:disabled{cursor:not-allowed;color:#888;background-color:#dde3ea;border-color:#dde3ea}._menu_hr301_160{position:absolute;top:calc(100% + .5rem);right:0;background-color:#fff;border:1px solid #e4e6eb;border-radius:6px;min-width:200px;box-shadow:0 4px 12px #00000014;display:flex;flex-direction:column;z-index:10}._menuItem_hr301_197{padding:.75rem 1rem;background:none;border:none;text-align:left;font-size:15px;color:#444;cursor:pointer;font-family:Noto Sans JP,sans-serif}._menuItem_hr301_197:hover:not(:disabled){background-color:#fafbfc;color:#222}._menuItem_hr301_197:disabled{cursor:not-allowed;color:#888}._templateList_hr301_218{display:flex;flex-direction:column;background-color:#f8f9fa;border-top:1px solid #e4e6eb}._templateItem_hr301_225{padding:.5rem 1.5rem;background:none;border:none;text-align:left;font-size:14px;color:#444;cursor:pointer;font-family:Noto Sans JP,sans-serif}._templateItem_hr301_225:hover{background-color:#f0f2f5;color:#222}._templateLoading_hr301_241{padding:.5rem 1.5rem;font-size:13px;color:#888}.study-session{min-height:100vh;background:#fafbfc;font-family:Noto Sans JP,sans-serif;display:flex;flex-direction:column}.study-session--centered{display:flex;align-items:center;justify-content:center}.study-session__status-text{font-size:15px;color:#888}.study-session__empty-card{max-width:500px;margin:0 auto;padding:4rem 2rem;background-color:#fff;border-radius:12px;box-shadow:0 4px 20px #00000014;text-align:center}.study-session__empty-title{font-size:18px;font-weight:700;color:#222;margin-bottom:1rem}.study-session__empty-description{font-size:15px;color:#444;margin-bottom:2rem}.study-session__cta-button{padding:.875rem 2.5rem;background-color:#38c6d9;color:#fff;border:none;border-radius:8px;cursor:pointer;font-size:15px;font-weight:600;font-family:Noto Sans JP,sans-serif;box-shadow:0 2px 8px #38c6d94d;transition:all .2s ease}.study-session__cta-button:hover{background-color:#2fb0c1;box-shadow:0 4px 12px #38c6d966;transform:translateY(-1px)}.study-session__container{flex:1;display:flex;flex-direction:column;max-width:900px;width:100%;margin:0 auto}.study-session__content{flex:1;overflow-y:auto;padding:2rem 1rem}.study-session__content::-webkit-scrollbar{width:8px}.study-session__content::-webkit-scrollbar-track{background:transparent}.study-session__content::-webkit-scrollbar-thumb{background:#0003;border-radius:4px}.study-session__content::-webkit-scrollbar-thumb:hover{background:#0000004d}.study-session__header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:1.5rem}.study-session__title{font-size:18px;font-weight:700;color:#222;margin:0 0 .5rem}.study-session__mode-badge{display:inline-block;margin-left:.5rem;padding:.125rem .5rem;font-size:13px;font-weight:400;color:#38c6d9;border:1px solid #38c6d9;border-radius:4px;vertical-align:middle}.study-session__meta{font-size:13px;color:#888}.study-session__card-kind-badge{display:inline-block;margin-left:.5rem;padding:.0625rem .375rem;font-size:11px;font-weight:600;border-radius:3px;vertical-align:middle;letter-spacing:.3px;text-transform:uppercase}.study-session__card-kind-badge--new{color:#22c55e;border:1px solid #22c55e}.study-session__card-kind-badge--review{color:#888;border:1px solid #d0d4d9}.study-session__card-kind-badge--learning{color:#ffa726;border:1px solid #ffa726}.study-session__card-counts{display:inline-flex;gap:.25rem;margin-right:.5rem;vertical-align:middle}.study-session__count{display:inline-block;min-width:1.5rem;padding:0 .25rem;font-size:13px;font-weight:600;text-align:center;line-height:1.5}.study-session__count--new{color:#22c55e}.study-session__count--learning{color:#ffa726}.study-session__count--review{color:#888}.study-session__waiting-actions{display:flex;gap:.75rem;justify-content:center;align-items:center}.study-session__exit-button{padding:.625rem 1.25rem;background-color:#fff;color:#444;border:1px solid #e4e6eb;border-radius:8px;cursor:pointer;font-size:13px;font-weight:500;font-family:Noto Sans JP,sans-serif;transition:all .2s ease}.study-session__exit-button:hover{background-color:#f5f6f8;border-color:#d0d4d9}.study-session__progress{width:100%;height:6px;background-color:#e4e6eb80;border-radius:3px;margin-bottom:2rem;overflow:hidden;box-shadow:inset 0 1px 2px #0000000d}.study-session__progress-fill{height:100%;background:#38c6d9;border-radius:3px;transition:width .4s ease;box-shadow:0 0 8px #38c6d966}.study-session__error{padding:1rem 1.5rem;margin-bottom:1.5rem;background-color:#fff5f5;border-left:4px solid #ff5252;border-radius:8px;color:#ff5252;font-size:13px;box-shadow:0 2px 8px #ff52521a}.study-session__card-wrapper{margin-bottom:0}.study-session__card{position:relative;width:100%}.study-session__card--flipped .study-session__card-face--front{display:none}.study-session__card-face{width:100%;min-height:280px;padding:2.5rem;border-radius:16px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;box-sizing:border-box;box-shadow:0 8px 32px #0000001f;transition:opacity .3s ease;margin-bottom:1rem}.study-session__card-face--front{background:#fff;border:2px solid rgba(228,230,235,.6)}.study-session__card-face--back{background:#fff;border:2px solid rgba(56,198,217,.3);display:none}.study-session__card--flipped .study-session__card-face--back{display:flex;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:scale(.98)}to{opacity:1;transform:scale(1)}}.study-session__front-text{font-size:28px;font-weight:700;color:#222;line-height:1.5;width:100%}.study-session__front-text img,.study-session__back-text img{max-width:100%;max-height:400px;width:auto;height:auto;margin:1.5rem auto;display:block;border-radius:8px;box-shadow:0 4px 12px #0000001a;object-fit:contain}.study-session__front-text audio,.study-session__back-text audio{margin:1.5rem 0;width:100%;max-width:400px}.study-session__replay-button{display:flex;align-items:center;justify-content:center;margin:1rem auto 0;padding:.5rem;background:none;border:1px solid #e4e6eb;border-radius:50%;cursor:pointer;color:#888;transition:color .15s,border-color .15s,background-color 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