body{padding:12px;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial}*{box-sizing:border-box}.app{width:100%;max-width:1200px;margin:12px auto}.app-header{margin-bottom:6px}.logo{background:#111;border-radius:6px;width:44px;height:44px;margin-right:12px;display:inline-block}.filter-section{border-bottom:1px solid #f0f0f0;flex-direction:column;gap:10px;width:100%;padding:10px 0;display:flex}.filter-row{flex-wrap:wrap;align-items:stretch;gap:10px;width:100%;margin-bottom:10px;display:flex}.filter-box{box-sizing:border-box;background:#fff;border:1px solid #ccc;border-radius:6px;flex:1;align-items:stretch;gap:8px;width:100%;min-width:0;padding:8px;display:flex}.filter-box .tag-input-container{background:0 0;border:none;flex-wrap:wrap;align-items:center;gap:8px;width:100%;padding:0;display:flex}.filter-box .rs,.filter-box input,.filter-box .searchable-input{width:100%}.qnum-input{box-sizing:border-box;border:1px solid #ddd;border-radius:6px;flex:1;width:100%;padding:6px 8px}@media (width<=900px){.filter-section{flex-direction:column}.filter-box{min-width:0}}.filter-bar input,.filter-bar .rs__control{font-size:13px}.filter-item{flex:0 calc(33.3333% - 9.33333px);align-items:stretch;gap:8px;min-width:0;display:flex}@media (width<=1100px){.filter-item{flex:0 calc(50% - 7px)}}@media (width<=700px){.filter-item{flex:100%}}.filter-item .rs{flex:auto;min-width:0}.filter-item .rs__control{width:100%;min-height:34px;box-shadow:none;border-radius:6px}.filter-clear{flex:none;padding:3px 6px;font-size:12px}.filter-bar .rs__control{box-shadow:none}.filter-bar .rs__control .rs__value-container{flex-wrap:wrap}.tag-input-container{box-sizing:border-box;background:#fff;border:1px solid #e6e6e6;border-radius:6px;flex-wrap:wrap;align-items:center;gap:8px;width:100%;min-height:64px;padding:10px;display:flex}.tag-input-container .rs{width:100%}.tag-input-container .rs__control{min-height:44px}.tag-pf{color:#666;font-size:12px}.filter-item{align-items:center;gap:8px;width:100%;display:flex}.filter-item input[type=text],.filter-item .searchable-input,.filter-item .searchable-value{box-sizing:border-box;border:1px solid #ddd;border-radius:6px;width:100%;padding:8px 10px;font-size:13px}.filter-item .rs{width:100%}.qnum-input{border:1px solid #ddd;border-radius:6px;flex:0 0 120px;width:120px;padding:6px 8px}@media (width<=900px){.filter-bar{grid-template-columns:1fr}}.searchable{position:relative}.searchable-controls{align-items:center;gap:8px;display:flex}.clear-btn{cursor:pointer;background:0 0;border:none;padding:4px;font-size:14px}.searchable-list{z-index:50;background:#fff;border:1px solid #eee;border-radius:6px;max-height:220px;position:absolute;top:42px;left:0;right:0;overflow:auto}.searchable-item{cursor:pointer;padding:8px 10px}.searchable-item:hover{background:#f6f8ff}.searchable-item.active{background:#eef4ff}.results-header{color:#333;margin:16px 0;font-size:14px}.question-list{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));justify-content:start;gap:14px;width:100%;display:grid}.question-card{background:#fff;border:1px solid #eee;border-radius:6px;flex-direction:column;padding:0;display:flex;overflow:hidden}.question-card.done{background:#f6fff6;border-color:#4caf50}.question-card.done .q-badge{background:#2e7d32}.card-image{cursor:pointer;background:#fafafa;justify-content:center;align-items:center;height:170px;display:flex;position:relative;overflow:hidden}.card-image img{object-fit:cover;width:100%;height:100%;display:block}.q-badge{color:#fff;z-index:5;text-shadow:0 1px 2px #000c;background:#000000b3;border-radius:6px;padding:4px 8px;font-size:12px;font-weight:700;position:absolute;top:10px;left:10px}.card-footer{cursor:pointer;border-top:1px solid #f0f0f0;padding:10px 12px}.q-meta{font-size:14px}.app-header{border-bottom:1px solid #f0f0f0;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;padding:12px 0;display:flex}.app-header h1{margin:0;font-size:20px;font-weight:700}.q-topic{color:#666;margin-top:6px;font-size:13px}.worksheet{margin-top:24px}@media (width<=768px){.app-header{flex-wrap:wrap}.app-header>div:first-child{flex-basis:100%;order:1}.app-header>div:nth-child(2){flex-basis:100%;order:3;margin-top:8px}.app-header>div:last-child{flex-basis:100%;order:2;margin-top:8px}.app-header h1{font-size:18px}.meta-badge{margin-left:4px;font-size:11px}}.tag-btn{cursor:pointer;background:0 0;border:1px solid #e6e6e6;border-radius:12px;margin-right:6px;padding:4px 8px;font-size:12px}.tag-btn:hover{background:#f3f8ff}.link-like{color:var(--accent);cursor:pointer;background:0 0;border:none;padding:0;font-size:14px}.link-like:hover{text-decoration:underline}@media (width<=900px){.modal-body{flex-direction:column}.card-image{height:180px}}.modal-overlay{z-index:1000;background:#00000080;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal{background:#fff;border-radius:8px;width:95%;max-width:900px;max-height:90vh;padding:16px;position:relative;overflow:auto}.modal-close{cursor:pointer;background:0 0;border:none;font-size:22px;position:absolute;top:12px;right:12px}.modal-body{gap:16px;display:flex}.modal-image img{object-fit:contain;width:100%;max-width:420px;height:auto}.modal-meta{flex:1}.modal-meta h2{margin-top:0}.modal-meta details summary{cursor:pointer}.admin-btn{cursor:pointer;background:#eee;border:1px solid #ddd;border-radius:6px;padding:6px 10px}.admin-btn:hover{background:#e6f0ff}.filter-clear{cursor:pointer;background:#f3f3f3;border:1px solid #e6e6e6;border-radius:6px;padding:4px 6px;font-size:12px;line-height:1}.filter-clear:hover{background:#e9eefc}.clear-all-btn{cursor:pointer;background:0 0;border:1px solid #ddd;border-radius:6px;padding:6px 8px}.clear-all-btn:hover{background:#fff3f3}:root{--bg:#f3f4f6;--surface:#fff;--surface-alt:#f8fafc;--text:#121212;--muted:#5b6473;--line:#d9dde4;--accent:#2e9db2}:root.theme-dark{--bg:#0d0f12;--surface:#141821;--surface-alt:#171c26;--text:#e6e8ec;--muted:#a2a8b3;--line:#28303a;--accent:#74bdc8}body{background:var(--bg);color:var(--text);padding:8px}.app{width:calc(100vw - 24px);max-width:none;color:var(--text);margin:0 auto}.brand-btn{color:var(--text);letter-spacing:-.04em;background:0 0;border:none;padding:0;font-size:52px;font-weight:760;line-height:1}.brand-btn:hover{color:var(--text);filter:none;background:0 0;border-color:#0000}.brand-accent{color:var(--accent)}.brand-btn:focus,.brand-btn:focus-visible,.brand-btn:active{color:var(--text);box-shadow:none;background:0 0;border-color:#0000;outline:none}:root.theme-dark .brand-btn,:root.theme-dark .brand-btn:hover,:root.theme-dark .brand-btn:focus,:root.theme-dark .brand-btn:focus-visible,:root.theme-dark .brand-btn:active{color:var(--text);box-shadow:none;filter:none;background:0 0;border-color:#0000}.theme-toggle{justify-content:center;align-items:center;width:52px;height:40px;padding:0;display:inline-flex}.mode-icon{transform-origin:50%;font-size:20px;line-height:1;display:inline-block}.mode-icon.sun{filter:saturate(.9);animation:.38s modeSwapSun}.mode-icon.moon{filter:saturate(.85);animation:.38s modeSwapMoon}@keyframes modeSwapSun{0%{opacity:0;transform:rotate(-24deg)scale(.82)}to{opacity:1;transform:rotate(0)scale(1)}}@keyframes modeSwapMoon{0%{opacity:0;transform:rotate(24deg)scale(.82)}to{opacity:1;transform:rotate(0)scale(1)}}button,input,select{font:inherit}button{border:1px solid var(--line);background:var(--surface-alt);color:var(--text);cursor:pointer;border-radius:8px;padding:6px 10px}button:hover{filter:brightness(.98)}button:disabled{opacity:.45;cursor:not-allowed}:root.theme-dark button{background:0 0;border-color:#353d49}:root.theme-dark button:hover{filter:none;background:#171d27}:root.theme-dark input,:root.theme-dark select,:root.theme-dark textarea{color:var(--text);background:#0f141b;border-color:#353d49}.app-header{z-index:30;background:var(--bg);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:10px;margin-bottom:10px;padding:10px 12px;display:flex;position:sticky;top:0}.app-header-actions{margin-right:6px}.app-header h1{letter-spacing:-.03em;font-size:40px;font-weight:750}.meta-badge{color:var(--muted);margin-left:0;font-size:13px}.filter-section{border-bottom:1px solid var(--line);gap:8px;padding:6px 0 8px}.filter-row{gap:8px;margin-bottom:8px}.filter-box{border-color:var(--line);background:var(--surface);border-radius:10px;padding:7px}.tag-input-container{border-color:var(--line);background:var(--surface);min-height:48px;padding:6px}.status-toggle{align-items:center;gap:6px;width:auto;display:flex}.status-option{border:1px solid var(--line);background:var(--surface-alt);color:var(--text);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:8px;align-items:center;gap:5px;padding:5px 8px;font-size:12px;display:inline-flex}.filter-box-status .tag-input-container{justify-content:flex-start}.status-option input{width:15px;height:15px;accent-color:var(--accent);margin:0}.status-option.active{border-color:var(--accent);box-shadow:inset 0 0 0 1px #6bc3d333}.results-header{color:var(--muted);margin:10px 0}.question-list{grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:12px}.question-card{border-color:var(--line);background:var(--surface);border-radius:10px}.card-top-row{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:8px;padding:8px 10px;display:flex}.card-checks{align-items:center;gap:12px;margin-left:auto;display:inline-flex}.card-check-label{color:var(--text);white-space:nowrap;align-items:center;gap:4px;font-size:12px;display:inline-flex}.card-idline{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;font-size:14px;overflow:hidden}.card-meta-link{color:var(--accent);cursor:pointer;background:0 0;border:none;padding:0;font-size:14px;font-weight:600}.card-meta-link:hover{filter:none;text-decoration:underline}.card-meta-divider{color:var(--muted);margin:0 6px;display:inline-block}.card-image{background:var(--surface-alt);height:240px}.card-image img{object-fit:contain;object-position:center;background:var(--surface-alt);width:100%;height:100%;display:block}.card-footer{border-top-color:var(--line);flex-direction:column;gap:8px;display:flex}.q-topic,.q-meta,.link-like{color:var(--text)}.link-like,.q-links a,.q-links a:visited,.q-links a:active,.q-links a:hover{color:var(--accent)}.question-pill{border:1px solid var(--line);background:var(--surface-alt);border-radius:8px;width:fit-content;padding:6px 10px;font-weight:700;display:inline-block}.q-topic{margin-top:0}.question-view{padding:6px 0 12px}html,body,.app,.app-header,.filter-box,.tag-input-container,.question-card,.question-content-card,.card-image,.question-pill,.chip,.status-option,button,input,select,textarea{transition:background-color .28s,color .28s,border-color .28s,box-shadow .28s}.question-top{border-bottom:1px solid var(--line);justify-content:flex-end;align-items:center;padding-bottom:8px;display:flex}.question-subtitle{color:var(--muted);margin-top:6px;font-size:14px}.question-top-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:8px;width:100%;display:flex}.question-count{font-size:22px;font-weight:700}.question-meta-grid{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.chip{border:1px solid var(--line);background:var(--surface-alt);border-radius:8px;padding:5px 9px;font-size:13px}.question-tags-row{flex-wrap:wrap;align-items:center;gap:8px;margin-top:10px;display:flex}.tag-btn{background:var(--surface-alt);border-color:var(--line);color:var(--text)}.question-tabbar{border-bottom:1px solid var(--line);gap:6px;margin-top:14px;display:flex}.question-tabbar button{border-bottom:none;border-radius:8px 8px 0 0;padding:8px 16px}.question-tabbar button.active{background:var(--surface);font-weight:700}.question-content-card{background:var(--surface);border:1px solid var(--line);border-top:none;border-radius:0 0 10px 10px;padding:10px}:root.theme-dark .question-card,:root.theme-dark .question-content-card,:root.theme-dark .filter-box,:root.theme-dark .tag-input-container{box-shadow:inset 0 0 0 1px #ffffff03}:root.theme-dark .question-card.done{background:#101a14;border-color:#2e5e45}:root.theme-dark .filter-clear,:root.theme-dark .clear-all-btn{color:var(--text);background:0 0;border-color:#353d49}:root.theme-dark .status-option{background:#101721;border-color:#353d49}.question-text{margin-bottom:10px;line-height:1.5}.question-main-image{object-fit:contain;border:1px solid var(--line);background:var(--surface-alt);cursor:zoom-in;border-radius:8px;width:100%;max-height:68vh}.question-empty{border:1px dashed var(--line);color:var(--muted);border-radius:8px;padding:18px}.modal{background:var(--surface);border:1px solid var(--line)}.hover-zoom-layout{grid-template-columns:1fr minmax(260px,34%);align-items:stretch;gap:14px;min-height:70vh;display:grid}.hover-zoom-hint{text-align:center;color:var(--muted);letter-spacing:.02em;margin:2px 0 8px;font-size:12px}.hover-zoom-main{border:1px solid var(--line);background:var(--surface-alt);cursor:crosshair;border-radius:10px;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.hover-lens{border:1px solid color-mix(in srgb, var(--accent) 75%, white);background:color-mix(in srgb, var(--accent) 18%, transparent);pointer-events:none;border-radius:4px;width:28%;height:28%;position:absolute;transform:translate(-50%,-50%);box-shadow:0 0 0 1px #0000002e}.hover-zoom-pane{border:1px solid var(--line);background-color:var(--surface-alt);opacity:.75;background-repeat:no-repeat;background-size:230%;border-radius:10px;transition:opacity .16s}.hover-zoom-pane.active{opacity:1}.site-credit{text-align:center;color:var(--muted);justify-content:center;align-items:center;gap:10px;margin:18px 0 8px;font-size:12px;display:flex}.site-credit-link{color:var(--accent);border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:4px 10px;text-decoration:none}.site-credit-link:hover{filter:brightness(.98);text-decoration:none}.user-auth-form{gap:10px;display:grid}.user-auth-form input{border:1px solid var(--line);background:var(--surface-alt);width:100%;color:var(--text);border-radius:8px;padding:9px 10px}.user-auth-actions{flex-wrap:wrap;gap:8px;display:flex}.user-auth-actions button{flex:none}.user-auth-divider{color:var(--muted);justify-content:center;align-items:center;gap:10px;margin-top:2px;font-size:12px;display:flex}.user-auth-divider:before,.user-auth-divider:after{content:"";background:var(--line);flex:1;height:1px}.oauth-google-btn{border:1px solid var(--line);background:var(--surface-alt);width:100%;color:var(--text);cursor:pointer;border-radius:8px;padding:9px 10px}.oauth-google-btn:disabled{opacity:.6;cursor:default}.user-auth-error{color:#ff5a6e;font-size:13px}.user-auth-note{color:var(--muted);margin:4px 0 10px;font-size:13px}.profile-page{margin:14px 0;padding:8px 2px}.profile-header-row{justify-content:space-between;align-items:center;gap:10px;margin-bottom:12px;display:flex}.profile-header-row h2{margin:0}.profile-card{border:1px solid var(--line);background:var(--surface);border-radius:12px;gap:10px;max-width:680px;padding:14px;display:grid}.profile-label{color:var(--muted);font-size:12px}.profile-input{border:1px solid var(--line);background:var(--surface-alt);width:100%;color:var(--text);border-radius:8px;padding:9px 10px}.profile-meta-row{gap:2px;display:grid}.profile-meta-label{color:var(--muted);font-size:12px}.profile-meta-value{font-size:14px}.profile-actions{margin-top:4px}.profile-message{font-size:13px}.profile-message.ok{color:#2bb673}.profile-message.error{color:#ff5a6e}.profile-topic-progress{margin-top:6px}.profile-topic-list{gap:8px;margin-top:6px;display:grid}.profile-topic-row{gap:5px;display:grid}.profile-topic-head{justify-content:space-between;gap:8px;font-size:13px;display:flex}.profile-topic-bar{border:1px solid var(--line);background:var(--surface-alt);border-radius:999px;height:8px;overflow:hidden}.profile-topic-fill{background:var(--accent);border-radius:999px;height:100%}.about-page{margin:14px 0;padding:8px 2px}.about-header-row{justify-content:space-between;align-items:center;gap:10px;margin-bottom:12px;display:flex}.about-header-row h2{margin:0}.about-card{border:1px solid var(--line);background:var(--surface);border-radius:12px;gap:10px;max-width:760px;padding:16px;display:grid}.about-card h3{margin:8px 0 0}.about-card ul{margin:0;padding-left:18px}.about-card a,.about-card a:visited{color:var(--accent)}.about-card a:hover{text-decoration:underline}.admin-modal{border-radius:14px;width:min(96vw,1540px);max-width:1540px;max-height:92vh;padding:18px}.admin-panel{padding:4px}.admin-grid{grid-template-columns:1.05fr 1.35fr;gap:18px;display:grid}.admin-column{min-width:0}.admin-subheading{margin-top:14px}.admin-muted{color:var(--muted);font-size:14px}.admin-row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.admin-preview{background:var(--surface-alt);border:1px solid var(--line);border-radius:8px;max-height:250px;padding:10px;font-size:13px;overflow:auto}.admin-message{margin-top:12px;font-size:13px}.admin-message.ok{color:#2bb673}.admin-message.error{color:#ff5a6e}.admin-upload-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.admin-form-grid{grid-template-columns:1fr 1fr;gap:10px;margin-top:10px;display:grid}.admin-field-label{color:var(--muted);margin-bottom:6px;font-size:12px;display:block}.admin-check-row{align-items:center;gap:8px;display:flex}.admin-span-2{grid-column:1/span 2}.admin-actions{flex-wrap:wrap;align-items:center;gap:8px;margin-top:12px;display:flex}.admin-message-inline{min-height:20px;font-size:13px}.admin-message-inline.ok{color:#2bb673}.admin-message-inline.error{color:#ff5a6e}.admin-list{gap:8px;display:grid}.admin-list-item{border:1px solid var(--line);background:var(--surface-alt);border-radius:8px;align-items:center;gap:12px;padding:8px;display:flex}.admin-list-thumb{background:var(--surface);border:1px solid var(--line);justify-content:center;align-items:center;width:84px;height:64px;display:flex}.admin-item-title{font-size:13px;font-weight:700}.admin-item-subtitle{color:var(--muted);font-size:12px}.admin-preview-thumb{border:1px solid var(--line);background:var(--surface);border-radius:8px;margin-top:8px;padding:6px}.admin-preview-thumb img{max-width:100%;max-height:160px;margin:0 auto;display:block}.admin-editing-banner{background:color-mix(in srgb, var(--accent) 14%, var(--surface));border:1px solid color-mix(in srgb, var(--accent) 48%, var(--line));border-radius:8px;margin-bottom:10px;padding:8px}.admin-modal input,.admin-modal select,.admin-modal textarea{border:1px solid var(--line);background:var(--surface-alt);width:100%;color:var(--text);border-radius:8px;padding:8px}.admin-modal input[type=checkbox]{width:auto;padding:0}.admin-modal input[type=file]{border:1px dashed var(--line);background:var(--surface-alt);border-radius:8px;width:100%;padding:8px}.admin-modal input[type=file]::file-selector-button{border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:6px;margin-right:10px;padding:6px 10px}@media (width<=1180px){.admin-grid,.admin-upload-grid,.admin-form-grid{grid-template-columns:1fr}.admin-span-2{grid-column:1}}@media (width<=900px){.brand-btn{font-size:42px}.question-count{font-size:18px}.question-list{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.card-image{height:200px}.hover-zoom-layout{grid-template-columns:1fr;min-height:auto}.hover-zoom-pane{display:none}}
