@font-face{font-family:Atlas Sans;src:url('/fonts/noto-sc-400.woff2') format('woff2');font-weight:400;font-display:swap}@font-face{font-family:Atlas Sans;src:url('/fonts/noto-sc-600.woff2') format('woff2');font-weight:600 900;font-display:swap}
:root{color-scheme:light;--bg:#f6f8f7;--paper:#fff;--ink:#243b34;--muted:#6f8176;--line:#e4ebe6;--green:#197b62;--deep:#135a49;--mint:#ebf6ef;--lime:#d9f9b6;--shadow:0 8px 28px #25433106;--ease:cubic-bezier(.2,.8,.2,1)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.65 'Atlas Sans',system-ui,sans-serif}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}a{color:var(--green);text-decoration:none}a:hover{color:var(--deep)}button{cursor:pointer;position:relative;display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid var(--line);background:#fff;color:#52655b;border-radius:10px;padding:9px 14px;line-height:1.4;min-height:38px;transition:background .18s,border-color .18s,transform .18s var(--ease),box-shadow .18s}button:hover:not(:disabled){border-color:#b4d0bf;background:#f5faf6;box-shadow:0 3px 9px #2543310a;transform:translateY(-1px)}button:active:not(:disabled){transform:translateY(1px) scale(.975);box-shadow:none}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #9fdcb9;outline-offset:3px}[hidden],.hidden{display:none!important}.sidebar,.mobile-shade,.breadcrumbs-strip{display:none}.workspace{min-height:100vh;display:flex;flex-direction:column}.atlas-icon{height:18px;width:18px;flex:none;vertical-align:middle;pointer-events:none}[data-icon]{display:inline-flex;align-items:center}.tap-pulse{position:fixed;width:50px;height:50px;border-radius:50%;background:#54b98744;pointer-events:none;z-index:9999}
/* Header rebuilt around two explicit rows, without absolute positioning. */
.topbar{background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:100;padding:0 max(24px,calc((100vw - 1376px)/2));box-shadow:0 5px 18px #25433103}.masthead{height:84px;display:grid;grid-template-columns:minmax(220px,1fr) minmax(220px,390px) minmax(180px,1fr);gap:30px;align-items:center}.top-brand{justify-self:start;padding:0;background:none!important;border:0!important;box-shadow:none!important;gap:12px;color:#173c2e;transform:none!important;line-height:1.1;text-align:left;font-size:22px;letter-spacing:.03em}.top-brand img{filter:drop-shadow(0 3px 4px #197b6218)}.top-brand small{display:block;font-size:10px;letter-spacing:.1em;font-weight:400;color:#93a298;margin-top:8px}.top-brand b{font-weight:700}.search-trigger{justify-content:flex-start;padding:11px 14px;background:#f5f8f6;border:1px solid #ebf0ec;min-height:43px;color:#71877a;font-size:12px;border-radius:12px;gap:10px}.search-trigger kbd{margin-left:auto;font:10px 'Atlas Sans',sans-serif;padding:2px 6px;border:1px solid #dfe8e1;background:#fff;border-radius:5px;color:#91a096}.top-actions{justify-self:end;position:relative;display:flex;gap:9px}.account-btn{background:var(--mint);border-color:#dbede1;color:#2a7056;font-size:12px;font-weight:600;padding:7px 10px 7px 15px;border-radius:24px}.avatar{width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:#fff;border:1px solid #d9ebde;font-size:11px}.nav-row{display:flex;align-items:center;justify-content:space-between;gap:20px;border-top:1px solid #f2f5f2;min-height:57px}.topnav{display:flex;align-items:center;gap:10px;min-width:0;padding:7px 0}.nav-link{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;padding:9px 16px;min-height:39px;border-radius:9px;border:0;color:#788b7e;font-size:13px;font-weight:600;background:transparent;position:relative}.nav-link.selected{background:var(--mint);color:var(--green)}.nav-link.selected::after{content:'';position:absolute;bottom:-8px;left:25%;width:50%;height:2px;border-radius:2px;background:var(--green)}.nav-link:hover{background:#f4f8f5;color:var(--green);transform:none;box-shadow:none}.nav-link .atlas-icon{width:16px;height:16px}.header-caption{font-size:11px;letter-spacing:.1em;color:#a2afa6;white-space:nowrap;display:flex;align-items:center;gap:8px}.header-caption i{width:5px;height:5px;border-radius:50%;background:#82bf95}
/* Page hierarchy */
.page{max-width:1376px;width:100%;margin:auto;padding:36px 24px 64px;flex:1;min-width:0}.page>div{animation:page-enter .35s var(--ease)}.page-header{position:relative;margin:0 0 27px;padding:0;display:flex;flex-direction:column;gap:7px}.page-header .eyebrow{font-size:10px;font-weight:600;color:#748a7c;letter-spacing:.17em}.page-header h1{font-size:29px;font-weight:600;letter-spacing:-.035em;line-height:1.4;margin:0}.page-header p:empty{display:none}.page-header p{margin:0;font-size:12px;color:var(--muted)}h1,h2,h3,h4{line-height:1.45;letter-spacing:-.02em}h2{font-size:18px;font-weight:600;margin:0 0 17px}h3{font-size:16px;margin:0 0 12px}p{margin:10px 0}.muted,.small{color:var(--muted)}.small,small{font-size:12px}.row{display:flex;align-items:center;gap:9px}.wrap{flex-wrap:wrap}.full{width:100%}.footer{display:flex;justify-content:space-between;gap:14px;max-width:1328px;width:calc(100% - 48px);padding:23px 0 28px;margin:0 auto;border-top:1px solid var(--line);font-size:10px;letter-spacing:.05em;color:#a6b3a9}.section-title-row{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:26px 0 15px}.section-title-row h2{margin:0}.section-title-row p{font-size:12px;color:var(--muted)}
/* Shared components */
.primary,button.primary{background:var(--green);border-color:var(--green);color:white;font-weight:600;box-shadow:0 3px 5px #197b6212}.primary:hover,button.primary:hover{background:var(--deep);border-color:var(--deep);color:white;box-shadow:0 6px 14px #197b6225}.secondary,.outline-btn{background:#fff;color:#617567;border:1px solid #dfe9e1}.danger{color:#c36a64;border-color:#efdcd8}.danger:hover{color:#b84f48;background:#fff4f2!important;border-color:#e6bdb6!important}.icon-btn{width:36px;padding:8px}.content-card,.bank-panel,.users-card,.pool-card{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:25px;margin-bottom:20px;box-shadow:var(--shadow)}input,textarea,select{width:100%;min-width:0;border:1px solid #e1eae3;border-radius:9px;background:#fff;color:#4b6355;padding:10px 12px;outline:none;transition:border-color .2s,box-shadow .2s}input::placeholder,textarea::placeholder{color:#8a9e90;font-size:12px}input:focus,textarea:focus,select:focus{border-color:#87b89a;box-shadow:0 0 0 3px #9ed7b124}input[type=checkbox]{width:auto;accent-color:var(--green)}input[readonly]{background:#f6faf7}textarea{resize:vertical;line-height:1.7}label{display:flex;flex-direction:column;gap:7px;font-size:12px;color:#75897b}label>span{font-weight:600}.pill,.badge{display:inline-flex;align-items:center;font-size:10px;font-weight:600;background:#eff6f0;color:#79917f;padding:4px 8px;border-radius:6px;line-height:1.3}.pill.primary{background:#e4f3e9;color:#478463;border:0;box-shadow:none}.difficulty-label{display:inline-flex;align-items:center;border:1px solid currentColor;border-radius:7px;background:color-mix(in srgb,currentColor 6%,white);padding:3px 8px;font-weight:400;line-height:1.5;font-size:11px;white-space:nowrap}.loading{padding:55px 25px;text-align:center;color:#9aad9e;font-size:13px}.loading::before{content:'';display:block;width:22px;height:22px;margin:0 auto 15px;border:2px solid #d9eade;border-top-color:var(--green);border-radius:50%;animation:spin .85s linear infinite}.empty{grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center;padding:40px 24px;min-height:220px;background:linear-gradient(160deg,#fff,#f4f9f5);border:1px dashed #d7e6db;border-radius:16px;color:#9aab9e;font-size:13px}.empty-art{position:relative;display:grid;place-items:center;width:68px;height:68px;background:#e8f4eb;border-radius:24px;transform:rotate(-6deg);margin-bottom:4px}.empty-art::after{content:'';position:absolute;width:12px;height:12px;right:-8px;top:5px;border:3px solid #bedfc8;border-radius:50%}.empty-art .atlas-icon{width:31px;height:31px;color:#6b9f7b;transform:rotate(6deg)}
/* Filter rail and results surface */
.source-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:17px;margin-bottom:27px}.source-card{display:flex;text-align:left;justify-content:flex-start;align-items:center;gap:14px;background:white;padding:20px 22px;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}.source-symbol{height:44px;width:44px;display:grid;place-items:center;border-radius:13px;font-size:13px;font-weight:600;letter-spacing:-.06em;background:#eaf6ef;color:#4e9274}.source-codeforces .source-symbol{background:#fff3df;color:#bd9851}.source-atcoder .source-symbol{background:#eaf0fa;color:#7996c4}.source-copy{display:flex;flex-direction:column;gap:2px}.source-copy>span{font-size:10px;color:#71877a}.source-copy strong{font-size:22px;font-weight:600;letter-spacing:-.03em}.source-copy small{font-size:10px;font-weight:400;color:#a8b5ab;letter-spacing:0;margin-left:5px}.source-card>.atlas-icon{margin-left:auto;color:#c8d8cd;width:16px}.bank-layout{display:grid;grid-template-columns:264px minmax(0,1fr);align-items:start;gap:22px}.bank-filter-panel{background:#fff;border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow);min-width:0}.bank-filter-panel>summary{display:flex;align-items:center;gap:8px;padding:19px 19px 15px;font-weight:600;font-size:13px;cursor:pointer;list-style:none}.bank-filter-panel>summary>.atlas-icon{width:16px;color:#7fa48b}.filter-collapse{margin-left:auto;color:#a3b0a7;font-size:9px;font-weight:400}.oj-filters{padding:0 18px 19px;display:flex;flex-direction:column;gap:17px}.oj-filters label{font-size:11px}.filter-search{order:-1}.oj-difficulty-row fieldset{border:0;padding:0;margin:0;display:grid;gap:10px;grid-template-columns:1fr 1fr;min-width:0}.oj-difficulty-row legend{font-size:11px;font-weight:600;color:#75897b;padding:0;margin:0 0 8px}.oj-difficulty-row label{font-size:10px}.oj-difficulty-row input{padding:10px 8px;font-size:11px}.filter-tags{border-top:1px solid #edf2ee;padding-top:13px}.filter-tags>summary{font-size:11px;font-weight:600;cursor:pointer;color:#637e6b}.site-tag-picker{padding-top:12px}.site-tag-picker>p{font-size:9px}.tag-options{display:flex;flex-direction:column;gap:5px;max-height:330px;overflow:auto;padding-right:3px}.tag-choice{display:flex;align-items:center;gap:4px;border-radius:6px;padding:6px 0;border-bottom:1px solid #f1f5f2}.tag-choice>span{flex:1;font-size:10px;overflow-wrap:anywhere}.tag-count{font-size:9px;color:#afbbb2}.tag-toggle{min-height:24px;padding:3px 5px;border-radius:5px;font-size:9px;gap:0}.tag-toggle.on.tags{background:#deefe3;color:#2e7c4e;border-color:#b6d7c1}.tag-toggle.on.excluded{background:#fff0eb;color:#b47e6b}.selected-tags{display:flex;gap:5px;flex-wrap:wrap}.selected-tags:empty{display:none}.selected-tag{font-size:9px;padding:5px 7px;min-height:26px;border:0;background:#e8f5ed;color:#548669}.selected-tag.excluded{background:#fff1ec;color:#b87d6b}.preset-panel{border-top:1px solid var(--line);padding:15px 18px}.preset-panel>summary{display:flex;align-items:center;gap:8px;font-size:11px;font-weight:600;cursor:pointer}.preset-panel>summary .atlas-icon{width:14px;height:14px;color:#88a492}.preset-bar{display:flex;gap:6px;flex-wrap:wrap;padding-top:13px}.preset-title{display:none}.preset-bar .custom-select{width:100%;margin-bottom:2px}.preset-bar>button{font-size:10px;padding:6px 9px;min-height:29px}.bank-results{min-width:0;background:white;border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow);overflow:hidden}.results-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:19px 22px;border-bottom:1px solid #edf2ee}.results-heading h2{margin:0;font-size:14px}.result-count{font-size:10px;color:#6f8677;margin:0}.oj-table-wrap{overflow-x:auto}.oj-table{border-collapse:collapse;width:100%;text-align:left;font-size:12px}.oj-table th{background:#f9fbfa;color:#6e8576;font-size:10px;font-weight:400;padding:12px 16px;border-bottom:1px solid #edf2ee;white-space:nowrap}.oj-table td{padding:17px 16px;border-bottom:1px solid #f0f4f1;vertical-align:middle}.oj-table tbody tr{transition:background .16s}.oj-table tbody tr:hover{background:#f4faf6}.oj-table .oj-id{width:90px}.oj-table .oj-source{width:65px}.oj-table .oj-rating{width:130px}.oj-table .oj-tags{width:170px}.oj-table .problem-identity{font-weight:600;font-size:12px;white-space:nowrap}.oj-table .problem-title{font-weight:400;font-size:13px}.oj-table a:hover{text-decoration:underline;text-underline-offset:4px}.oj-table td:nth-child(3){font-size:10px;color:#8ba393}.oj-tag{display:inline-block;margin:2px 2px 2px 0;font-size:10px;border-radius:4px;padding:2px 5px;background:#f0f5f1;color:#52785f;white-space:nowrap}.oj-table .muted{font-size:10px;color:#bdc8c0}.oj-pagination{display:flex;justify-content:center;align-items:center;padding:20px;gap:14px;font-size:11px;color:#98aa9c}.oj-pagination button{font-size:10px;min-height:31px;padding:7px 11px}
.source-card[aria-pressed=true]{border-color:#a6cdb6;background:#fbfefc}.source-card:hover .atlas-icon{color:var(--green);transform:translateX(3px)}.source-card>.atlas-icon{transition:transform .2s,color .2s}.select-caption{overflow:hidden;text-overflow:ellipsis}.select-caret{margin-left:auto;flex:none;font-size:14px;color:#839b8b;transition:transform .2s}.select-trigger[aria-expanded=true] .select-caret{transform:rotate(180deg)}
/* Field menus */
.custom-select{position:relative;display:inline-block;min-width:0;width:100%}.native-select{position:absolute!important;opacity:0!important;width:1px!important;height:1px!important;padding:0!important;pointer-events:none!important}.select-trigger{width:100%;text-align:left;justify-content:space-between;font-size:11px;padding:11px 12px;border-color:#e0e9e2;background:#fcfdfc;min-height:39px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.select-trigger[aria-expanded=true]{border-color:#96c5a7;background:#f6fbf7;box-shadow:0 0 0 3px #a9d7b51b}.select-menu{position:absolute;z-index:200;top:calc(100% + 5px);left:0;width:max(100%,180px);max-width:calc(100vw - 40px);background:#fff;border:1px solid #dce9e0;border-radius:10px;padding:5px;box-shadow:0 12px 38px #203b2920;animation:menu-enter .18s var(--ease)}.select-options{max-height:250px;overflow:auto}.select-option{display:block;text-align:left;width:100%;min-height:32px;padding:8px 10px;border:0;font-size:11px;border-radius:6px;box-shadow:none!important}.select-option:hover,.select-option[aria-selected=true]{background:#eaf5ed;color:var(--green)}.select-search{padding:8px 10px;font-size:11px;margin-bottom:5px}
/* Playlists, forms, dashboard cards */
.pool-toolbar{display:grid;grid-template-columns:1fr 1.5fr 1fr 1.5fr;gap:12px;background:#fff;padding:18px;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);margin-bottom:16px}.playlist-actions{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0 24px}.pool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px;margin:18px 0}.pool-card{padding:24px;display:flex;flex-direction:column;gap:10px;min-height:260px;margin:0;transition:transform .2s var(--ease),box-shadow .2s}.pool-card:hover{transform:translateY(-4px);box-shadow:0 16px 40px #203c2c0e;border-color:#cce2d3}.pool-card h3{margin:5px 0;font-size:20px;font-weight:600}.pool-card>p{flex:1;font-size:12px;color:#8ba08f}.pool-metadata{display:flex;flex-wrap:wrap;gap:8px;font-size:10px;color:#93a497;border-top:1px solid #edf3ee;padding-top:14px}.pool-card .row:last-child{margin-top:4px}.pool-card button{font-size:11px}.playlist-form,.admin-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.playlist-form label:has(textarea),.playlist-form label:has(input[type=file]),.admin-form .wide{grid-column:1/-1}.playlist-form>button{justify-self:start;align-self:end}.playlist-form textarea{min-height:140px}.lesson-topline,.sub-row{display:flex;gap:7px;flex-wrap:wrap}.lesson-title{font-size:28px;margin:16px 0 6px}.lesson-subtitle{color:#809486}.list-detail-content .content-card>.row{margin-top:20px}.problem-list{display:grid;gap:12px}.problem-card{display:flex;gap:16px;align-items:center;padding:22px;background:white;border:1px solid var(--line);border-radius:13px;transition:border-color .2s,box-shadow .2s}.problem-card:hover{border-color:#b5d3bf;box-shadow:var(--shadow)}.problem-card .index{font-size:24px;color:#c4d7c9;font-weight:600}.problem-card .details{flex:1;min-width:0}.problem-card h3{font-size:15px;margin:0}.problem-card p{font-size:11px;color:#90a294}.problem-card .external{font-size:11px;white-space:nowrap}.playlist-edit-item,.suggestion{display:flex;align-items:center;gap:10px;background:#fafcfb;padding:13px;border:1px solid var(--line);border-radius:9px;margin:8px 0}.playlist-edit-item>div,.suggestion>div{flex:1}.playlist-edit-item strong,.suggestion strong{font-size:12px}.playlist-edit-item button{font-size:11px;min-height:30px;padding:6px 9px}.bulk-import-area{background:#f8fbf9;border:1px dashed #d1e3d7;border-radius:12px;padding:20px;margin:20px 0}.bulk-import-area p{font-size:11px}.bulk-pids{margin:8px 0 12px}.subtle-alert{padding:14px 18px;background:#fffaee;border:1px solid #efe4c7;border-radius:10px;color:#a28e64;font-size:12px}.admin-quick{display:flex;flex-wrap:wrap;align-items:center;gap:9px;margin:16px 0}.admin-quick>input{flex:1;min-width:170px}.admin-quick>.custom-select{width:230px}.admin-quick>a{padding:8px 14px;border-radius:9px}.bank-state-table{border-collapse:collapse;width:100%;font-size:12px;margin-top:16px}.bank-state-table th{background:#f5f9f6;text-align:left;color:#8da091;font-weight:400;font-size:11px}.bank-state-table td,.bank-state-table th{padding:12px;border-bottom:1px solid var(--line)}.bank-error,.auth-error{color:#be6a60;font-size:12px}.bank-panel>p{font-size:11px;color:#708878}
/* Reading */
.solve-page{max-width:1100px;margin:auto}.solve-page .page-header{padding-right:170px}.solve-page .page-header h1{font-size:28px}.solve-difficulty{position:absolute;right:0;top:25px;font-size:14px;padding:6px 13px;border-radius:9px}.solve-actions{display:flex;align-items:center;justify-content:flex-end;gap:9px;flex-wrap:wrap;margin:20px 0}.solve-actions>a,.solve-actions>button{font-size:11px;display:inline-flex;align-items:center;padding:10px 14px;min-height:38px;gap:7px;border-radius:9px}.solve-page>.content-card{padding:38px 46px;max-width:980px;margin:24px auto}.course-markdown{font-size:16px;line-height:1.9;overflow-wrap:anywhere;color:#344c3e}.course-markdown p{margin:16px 0}.course-markdown h1,.course-markdown h2{font-size:23px;margin:29px 0 17px;font-weight:600}.course-markdown h2::before{content:'';display:inline-block;width:4px;height:19px;background:#a4ceb4;border-radius:3px;margin-right:11px;vertical-align:-1px}.course-markdown h3{font-size:18px;margin-top:24px}.course-markdown pre{background:#f7f9f8;border:1px solid #e5ebe7;border-radius:9px;padding:17px 20px;overflow:auto;font:13px/1.7 Consolas,monospace}.course-markdown code{font-family:Consolas,monospace;font-size:.88em;background:#f1f6f2;padding:2px 4px;border-radius:3px}.course-markdown pre code{background:none;padding:0}.course-markdown blockquote{border-left:3px solid #b2d4bf;margin:22px 0;padding:1px 20px;color:#869c8c;background:#fbfdfb}.course-markdown img{max-width:100%;height:auto}.course-markdown table{border-collapse:collapse;margin:20px 0;max-width:100%;width:auto;border:1px solid #d4e4d9;font-size:14px}.course-markdown th,.course-markdown td{border:1px solid #d4e4d9;padding:9px 15px;min-width:55px;text-align:center}.course-markdown th{background:#eff6f1;font-weight:600}.markdown-table-scroll{overflow-x:auto;max-width:100%;margin:20px 0}.markdown-table-scroll>table{margin:0}.course-markdown table.luogu-cute-table{border:2px solid #a1c2ae;width:auto}.luogu-align-center{text-align:center}.luogu-align-right{text-align:right}.luogu-epigraph cite{display:block;text-align:right}.luogu-admonition{padding:14px 17px;border:1px solid #d7e7dc;background:#f5fbf7;border-radius:10px;margin:18px 0}.luogu-admonition summary{cursor:pointer;font-size:14px;font-weight:600}.luogu-admonition[data-kind=warning]{background:#fff9ec;border-color:#ecdfbb}.luogu-admonition[data-kind=error]{background:#fff4f1;border-color:#eed0c7}.luogu-code-line{display:block;white-space:pre}.luogu-code-line.highlighted{background:#fcf0ca}.luogu-code-lines.numbered{counter-reset:line}.luogu-code-lines.numbered .luogu-code-line{counter-increment:line}.luogu-code-lines.numbered .luogu-code-line::before{content:counter(line);display:inline-block;width:2em;margin-right:1em;text-align:right;color:#a8b4aa}.ide-frame{width:100%;height:820px;border:1px solid #dbe7df;border-radius:16px;box-shadow:var(--shadow)}.solve-toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:16px 0}.solve-toolbar>.custom-select{width:180px}.solve-toolbar input{width:auto}.solve-editor{min-height:210px;font-family:Consolas,monospace}.solve-output{padding:17px;background:#f6faf7;border:1px solid var(--line);border-radius:9px;white-space:pre-wrap;max-height:350px;overflow:auto;font-size:12px}.judge-drop{border:1px dashed #b1cebc;background:#f6fbf7;border-radius:12px;padding:30px;text-align:center;cursor:pointer;color:#88a291;margin:17px 0}.judge-drop.dragging{background:#e4f5e9;border-color:var(--green)}.solve-fetch-debug{border:1px solid var(--line);border-radius:10px;padding:14px;font-size:12px}.solve-fetch-debug summary{cursor:pointer}
/* Accounts, admin, dialogs */
.users-main .login-card{max-width:440px;margin:40px auto;padding:32px}.users-main label small{font-size:10px;color:#7b8c80;font-weight:400}.users-main #admin-login{display:grid;gap:18px}.users-main .users-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.users-form-actions{display:flex;align-items:center;gap:12px;grid-column:1/-1;padding-top:20px;border-top:1px solid var(--line)}.users-toolbar{display:flex;align-items:center;gap:15px;margin:18px 0;flex-wrap:wrap}.users-toolbar>h2,.users-toolbar>#admin-identity{flex:1;margin:0}.users-toolbar .user-search{font-size:11px;min-width:220px}.users-table-wrap{overflow:auto}.users-main table{border-collapse:collapse;text-align:left;width:100%;font-size:12px}.users-main th{font-size:11px;font-weight:400;color:#6f8677;background:#f7faf8}.users-main td,.users-main th{padding:15px 14px;border-bottom:1px solid #ecf1ed;white-space:nowrap}.users-main td button{padding:6px 11px;margin-right:7px;font-size:11px;min-height:30px}.users-main .membership{color:#4b9870}.users-main tbody tr:hover{background:#f9fcfa}.account-menu{position:absolute;right:0;top:calc(100% + 12px);padding:9px;background:white;border:1px solid var(--line);border-radius:13px;width:245px;box-shadow:0 20px 55px #203b2920;animation:menu-enter .2s var(--ease)}.account-menu p{padding:8px 10px 13px;font-size:10px;color:#93a397;border-bottom:1px solid var(--line)}.account-menu button{display:flex;justify-content:flex-start;width:100%;border:0;border-radius:7px;box-shadow:none;font-size:12px}.modal-backdrop,.ui-overlay{position:fixed;inset:0;background:#172d2455;backdrop-filter:blur(5px);z-index:800;display:flex;align-items:center;justify-content:center;padding:24px;animation:fade .18s ease}.modal,.ui-dialog{position:relative;background:#fff;max-width:440px;width:100%;max-height:90dvh;overflow:auto;border:1px solid #fff9;border-radius:20px;padding:32px;box-shadow:0 35px 80px #172c2430;animation:dialog-enter .25s var(--ease)}.modal h2,.ui-dialog h2{font-size:23px;margin:16px 0}.modal p{font-size:12px;color:#94a399}.modal-symbol{width:45px;height:45px;display:grid;place-items:center;background:#e8f5ed;color:var(--green);border-radius:14px;font:28px Georgia}.close,.ui-close{position:absolute;right:12px;top:12px;border:0;background:none;padding:5px;font-size:23px;width:31px;height:31px;min-height:0;color:#a8b6ac}.auth-tabs{display:flex;gap:24px;border-bottom:1px solid var(--line);margin:24px 0}.auth-tabs button{padding:10px 0;border:0;border-bottom:2px solid transparent;border-radius:0;font-size:12px;background:none;box-shadow:none;transform:none}.auth-tabs .active{border-color:var(--green);color:var(--green);font-weight:600}.modal form,.ui-dialog form{display:grid;gap:16px}.auth-error:empty{display:none}.auth-foot{font-size:10px!important;color:#abb7ae!important;margin-top:18px}.dialog-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:25px}.ui-dialog>input{margin:10px 0 20px}.ui-dialog>button.primary{float:right}.search-dialog{background:#fff;border-radius:18px;width:650px;max-width:100%;align-self:flex-start;margin-top:8vh;overflow:hidden;box-shadow:0 30px 80px #203b2930;animation:dialog-enter .2s var(--ease)}.search-box{display:flex;gap:12px;align-items:center;padding:18px;border-bottom:1px solid var(--line)}.search-box input{border:0;box-shadow:none;font-size:15px}.search-box>span{font-size:22px;color:#8da795}.search-box>button{border:0}.search-results{max-height:55vh;overflow:auto;padding:8px}.search-result{display:flex;justify-content:flex-start;width:100%;text-align:left;border:0;padding:12px;gap:12px}.search-result.focused{background:#edf7f0}.result-icon{display:grid;place-items:center;height:35px;width:35px;background:#ecf6ef;border-radius:9px;color:#70a684}.search-result strong{display:block;font-size:12px;font-weight:600}.search-result small{color:#9dad9f;font-size:10px}.search-help{text-align:right;font-size:10px;color:#7b8c80;padding:13px 20px;border-top:1px solid var(--line)}.toast-layer{position:fixed;bottom:25px;right:25px;z-index:2000;display:grid;gap:10px}.toast{padding:13px 19px;border-radius:11px;background:#254b3b;color:#e6f6ea;font-size:12px;box-shadow:0 12px 28px #214c3028;animation:menu-enter .2s var(--ease)}
.ui-feedback-highlight{position:fixed;z-index:2200;pointer-events:none;border:2px solid #64bc8a;border-radius:8px;background:#85d99b14}.ui-feedback-popover{position:fixed;width:345px;max-width:calc(100vw - 16px);z-index:2300;background:white;border:1px solid #c1dfcc;border-radius:14px;padding:21px;box-shadow:0 18px 50px #203b2933;animation:menu-enter .2s var(--ease)}.ui-feedback-heading{font-size:14px;font-weight:600;padding-right:25px}.ui-feedback-target,.ui-feedback-info{font-size:10px;color:#96a99c;margin:10px 0}.ui-feedback-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:13px}.ui-feedback-actions button{font-size:11px}.ui-feedback-item{border:1px solid var(--line);padding:18px;border-radius:12px;margin-top:14px}.ui-feedback-route,.ui-feedback-state{font-size:10px;color:#94a59a;margin-right:10px}.ui-feedback-comment{margin:10px 0;font-weight:600}.ui-feedback-selector{font-size:10px;overflow-wrap:anywhere}.ui-feedback-context{font-size:11px;color:#9aab9e}
@keyframes page-enter{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes menu-enter{from{opacity:0;transform:translateY(-5px) scale(.98)}to{opacity:1;transform:none}}@keyframes dialog-enter{from{opacity:0;transform:translateY(12px) scale(.97)}to{opacity:1;transform:none}}@keyframes fade{from{opacity:0}to{opacity:1}}@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:1100px){.bank-layout{grid-template-columns:240px minmax(0,1fr);gap:16px}.oj-table th,.oj-table td{padding:14px 11px}.oj-table .oj-tags{width:130px}.masthead{gap:20px;grid-template-columns:1fr 280px 1fr}.header-caption{display:none}.pool-toolbar{grid-template-columns:1fr 1fr}}
@media(max-width:800px){.topbar{padding:0 18px}.masthead{height:75px;grid-template-columns:1fr auto auto;gap:12px}.top-brand{font-size:19px;gap:9px}.top-brand img{width:35px;height:35px}.top-brand small{font-size:8px;letter-spacing:0}.search-trigger{padding:10px;min-width:36px;min-height:36px}.search-trigger .desktop-label,.search-trigger kbd{display:none}.topnav{gap:4px;overflow-x:auto;width:100%;scrollbar-width:none}.nav-row{min-height:51px}.nav-link{font-size:11px;min-height:34px;padding:8px 10px;gap:5px}.nav-link .atlas-icon{width:14px;height:14px}.page{padding:27px 18px 45px}.page-header h1{font-size:25px}.source-stats{gap:9px;margin-bottom:18px}.source-card{padding:15px 12px;gap:9px}.source-symbol{width:32px;height:32px;border-radius:9px;font-size:10px}.source-copy strong{font-size:18px}.source-card>.atlas-icon{display:none}.bank-layout{grid-template-columns:1fr}.oj-filters{display:grid;grid-template-columns:1fr 1fr;padding:0 18px 20px}.filter-search,.filter-tags,.oj-difficulty-row,.selected-tags{grid-column:1/-1}.bank-filter-panel>summary{padding:14px 18px}.preset-bar .custom-select{max-width:260px}.bank-filter-panel:not([open])>summary{border:0}.result-count{font-size:9px}.oj-table{min-width:760px}.solve-page .page-header{padding-right:0}.solve-difficulty{position:static;align-self:flex-start;font-size:12px;margin-top:6px}.solve-page>.content-card{padding:25px}.solve-page .page-header h1{font-size:24px}.problem-card{flex-wrap:wrap}.problem-card .details{flex-basis:70%}.problem-card .external{margin-left:40px}}
@media(max-width:500px){.top-brand small{display:none}.top-brand{font-size:18px}.masthead{height:68px;gap:8px}.account-btn{font-size:10px;padding:6px 8px;min-height:35px}.avatar{height:23px;width:23px;font-size:10px}.topnav .nav-link{font-size:10px}.topnav{gap:2px}.header-caption{display:none}.source-card{padding:12px 9px;gap:7px}.source-card .source-symbol{display:none}.source-copy strong{font-size:19px}.source-copy small{font-size:8px;display:block;margin:0}.source-copy>span{font-size:10px}.page-header{margin-bottom:19px}.page-header .eyebrow{font-size:9px}.page{padding:24px 14px 35px}.results-heading{padding:16px}.content-card,.bank-panel,.users-card{padding:20px}.playlist-form,.admin-form,.users-main .users-form{grid-template-columns:1fr}.pool-toolbar{grid-template-columns:1fr;padding:14px}.pool-grid{grid-template-columns:1fr}.users-toolbar .user-search{width:100%}.users-form-actions{flex-wrap:wrap}.solve-page>.content-card{padding:22px 18px}.course-markdown{font-size:15px}.course-markdown h2{font-size:20px}.solve-actions{justify-content:flex-start;gap:6px}.solve-actions>button,.solve-actions>a{font-size:10px;padding:8px 11px}.footer{font-size:9px;width:calc(100% - 28px)}.modal,.ui-dialog{padding:25px}.toast-layer{right:14px;left:14px;bottom:14px}.toast{max-width:100%}}
@media(max-width:600px){.oj-table{display:block;min-width:0}.oj-table thead{display:none}.oj-table tbody{display:block}.oj-table tr{display:grid;grid-template-columns:76px minmax(0,1fr);gap:0 10px;padding:17px 15px;border-bottom:1px solid #edf2ee}.oj-table td{min-width:0;padding:0;border:0}.oj-table td:first-child{grid-column:1;grid-row:1}.oj-table td:nth-child(2){grid-column:2;grid-row:1}.oj-table td:nth-child(3){display:none}.oj-table td:nth-child(4){grid-column:1;grid-row:2;align-self:start;margin-top:10px}.oj-table td:nth-child(5){grid-column:2;grid-row:2;margin-top:8px}.oj-table .problem-title{font-size:13px;line-height:1.7;overflow-wrap:anywhere}.oj-table .problem-identity{font-size:11px}.oj-table .difficulty-label{font-size:9px;padding:3px 5px;white-space:normal}.oj-table td[colspan]{grid-column:1/-1;color:var(--muted);padding:20px 0}.oj-table .oj-tag{font-size:9px}.results-heading{align-items:flex-start;flex-direction:column;gap:4px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}


/* ==== v20 custom brand + solve page alignment ==== */
.brand{align-items:center;gap:12px}
.brand-mark{width:38px;height:38px;flex:0 0 38px;display:block;filter:drop-shadow(0 5px 10px rgba(22,120,97,.16))}
.brand-copy strong,.top-brand-wordmark,.brand-wordmark{font-family:Georgia,"Times New Roman","Songti SC","STSong",serif}
.brand-wordmark,.top-brand-wordmark{display:inline-flex;align-items:flex-end;gap:4px;letter-spacing:.06em;line-height:1}
.brand-wordmark-oi,.top-brand-oi{font-style:italic;font-weight:700;color:#238468;letter-spacing:.08em;text-shadow:0 1px 0 rgba(255,255,255,.4)}
.brand-wordmark-atlas,.top-brand b{font-weight:700;font-style:italic;color:#173f31;letter-spacing:.11em;text-shadow:0 1px 0 rgba(255,255,255,.5)}
.brand-copy small{display:block;margin-top:5px;letter-spacing:.12em}
.top-brand{display:flex;align-items:center}
.top-brand img{flex:0 0 42px}
.top-brand-copy{display:flex;flex-direction:column;gap:7px}
.top-brand-wordmark{font-size:27px;line-height:1}
.top-brand small{margin-top:0;font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:#8fa294}

.solve-page{max-width:1260px;margin:0 auto}
.solve-hero{background:linear-gradient(180deg,#f4fbf7 0%,#ffffff 82%);border:1px solid #dce9e1;border-radius:20px;box-shadow:var(--shadow);overflow:hidden;margin-bottom:22px}
.solve-hero-inner{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:26px;padding:28px 30px 18px;background:linear-gradient(135deg,rgba(25,123,98,.06),rgba(25,123,98,0) 55%)}
.solve-hero-title h1{margin:0;font-size:24px;color:#223d31;line-height:1.28}
.solve-hero-title p{margin:11px 0 0;color:#8ca194;font-size:12px;line-height:1.7}
.solve-hero-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 18px;align-content:start;padding-left:10px}
.solve-stat{display:flex;flex-direction:column;gap:6px;padding:0;border:0;background:none}
.solve-stat-label{font-size:11px;color:#8da094}
.solve-stat-value{font-size:14px;color:#223b2f;font-weight:700}
.solve-hero-tabs{display:flex;align-items:flex-end;gap:24px;border-top:1px solid #eef3ef;padding:0 30px;background:#fff}
.solve-hero-tab{position:relative;display:inline-flex;align-items:center;height:56px;font-size:14px;font-weight:700;color:#7e9085}
.solve-hero-tab.active{color:#2d7656}
.solve-hero-tab.active::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:3px;border-radius:999px;background:#2e8f6e}
.solve-hero-tab.muted{color:#aab8b1;font-weight:600}
.solve-main-grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:24px;align-items:start}
.solve-body-card{padding:0;overflow:hidden}
.solve-body-card .section-headline{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;border-bottom:1px solid #edf3ee;background:#fff}
.solve-body-card .section-headline h2{margin:0;font-size:19px;color:#263f33}
.solve-body-card .section-tools{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:12px}
.solve-body-card .section-tools button,.solve-body-card .section-tools a{font-size:12px;color:#4f8068;background:none;border:0;padding:0;min-height:0;display:inline-flex;align-items:center;gap:5px}
.solve-body-card .section-tools button:hover,.solve-body-card .section-tools a:hover{color:#24694b;background:none}
.solve-body-card .statement-meta{padding:16px 24px 0;color:#7f9388;font-size:12px}
.solve-body-card .statement-scroll{padding:6px 24px 26px}
.solve-sidebar{display:grid;gap:18px}
.solve-side-card{padding:20px 22px}
.solve-side-card h3{margin:0 0 16px;font-size:18px;color:#2a4337}
.solve-side-grid{display:grid;grid-template-columns:1fr auto;gap:14px 12px;align-items:center;font-size:13px}
.solve-side-grid dt{margin:0;color:#4e6459;font-weight:700}
.solve-side-grid dd{margin:0;color:#8f3ad1;font-weight:700;text-align:right}
.solve-side-grid dd.muted{color:#7c9387;font-weight:600}
.solve-side-links{display:flex;flex-wrap:wrap;gap:12px 14px;font-size:12px}
.solve-side-links a,.solve-side-links button{color:#4895d2;background:none;border:0;padding:0;font-size:12px}
.solve-tags{display:flex;flex-wrap:wrap;gap:8px}
.solve-tags .oj-tag{margin:0!important}
.solve-actions{display:flex;align-items:center;justify-content:flex-start;gap:9px;flex-wrap:wrap;margin:0}
.solve-actions>a,.solve-actions>button{font-size:12px;display:inline-flex;align-items:center;padding:10px 14px;min-height:38px;gap:7px;border-radius:10px}
.solve-hero-actions{padding:0 30px 24px;background:#fff;display:flex;justify-content:flex-end}
.solve-page .ide-slot{margin-top:22px}
.solve-page .ide-slot>p{padding:16px 20px;background:#fff;border:1px solid var(--line);border-radius:12px;color:#779083}
.solve-page .content-card.solve-body-card,.solve-page .solve-side-card{margin-bottom:0}

@media(max-width:1000px){
  .solve-hero-inner{grid-template-columns:1fr}
  .solve-hero-stats{padding-left:0;grid-template-columns:repeat(4,minmax(0,1fr))}
  .solve-main-grid{grid-template-columns:1fr}
}
@media(max-width:800px){
  .brand-mark{width:34px;height:34px;flex-basis:34px}
  .top-brand-wordmark{font-size:22px}
  .solve-hero-inner{padding:22px 20px 14px}
  .solve-hero-tabs{padding:0 20px;gap:18px;overflow:auto}
  .solve-hero-actions{padding:0 20px 20px;justify-content:flex-start}
  .solve-hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
  .solve-body-card .section-headline{padding:18px 18px 14px;align-items:flex-start;flex-direction:column}
  .solve-body-card .statement-meta{padding:14px 18px 0}
  .solve-body-card .statement-scroll{padding:6px 18px 22px}
}

/* A true side-by-side IDE: no end-of-page iframe, cards, or nested statement. */
body.atlas-solving{overflow:hidden}
body.atlas-solving .topbar{padding:0 18px}
body.atlas-solving .masthead{height:59px;grid-template-columns:auto 1fr auto}
body.atlas-solving .top-brand small,body.atlas-solving .nav-row,body.atlas-solving .footer,body.atlas-solving .header-caption{display:none!important}
body.atlas-solving .topbar .search-trigger{max-width:340px;justify-self:center}
body.atlas-solving #main{padding:0!important;margin:0!important;max-width:none!important;width:100%!important;flex:0 0 auto!important}
body.atlas-solving .solve-page{max-width:none;width:100%;margin:0}
body.atlas-solving .solve-page>.solve-hero,body.atlas-solving .solve-page>.solve-main-grid{display:none!important}
.solve-ide-workspace{display:grid;width:100%;height:calc(100dvh - 60px);min-height:380px;overflow:hidden;background:#fff;animation:none!important}
.solve-ide-problem{min-width:0;min-height:0;display:flex;flex-direction:column;overflow:hidden;background:#fff}
.solve-ide-bar{height:50px;flex:0 0 50px;display:flex;align-items:center;gap:12px;justify-content:flex-end;padding:0 17px;border-bottom:1px solid #e5ede8;background:#fff}
.solve-ide-bar strong{margin-right:auto;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:14px;color:#2e493b}
.solve-ide-bar button{white-space:nowrap;background:none!important;border:0!important;color:#4591ce!important;box-shadow:none!important;font-size:12px}
.solve-ide-reader{overflow:auto;min-height:0;flex:1;padding:14px 24px 30px}
.solve-ide-reader .solve-body-card{border:0!important;border-radius:0!important;box-shadow:none!important;background:none!important;margin:0!important;overflow:visible!important}
.solve-ide-reader .section-headline{padding:8px 0 14px!important;border:0!important}
.solve-ide-reader .section-tools{display:none!important}
.solve-ide-reader .statement-meta{padding:0 0 12px!important}
.solve-ide-reader .statement-scroll{padding:0!important}
.solve-ide-right{position:relative;display:flex;min-height:0;min-width:0;overflow:hidden;background:#fff}
.solve-ide-right.resizing iframe{pointer-events:none}
.solve-ide-frame{display:block;width:100%;height:100%;border:0!important;border-radius:0!important;box-shadow:none!important}
.solve-ide-load{margin:auto;padding:20px;text-align:center;color:#799383}
.solve-ide-splitter{position:relative;z-index:4;background:#f1f5f2;cursor:col-resize;touch-action:none;user-select:none;border-left:1px solid #dce6de;border-right:1px solid #dce6de}
.solve-ide-splitter::after{content:'⋮';position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:grid;place-items:center;border-radius:7px;background:#e5efe7;color:#7c9c88;height:42px;width:7px;font-size:13px}
.solve-ide-splitter.dragging,.solve-ide-splitter:hover{background:#bedcc9}
@media(max-width:700px){.solve-ide-bar{padding:0 8px;gap:2px}.solve-ide-bar strong{font-size:11px}.solve-ide-bar button{font-size:10px;padding:6px}.solve-ide-reader{padding:12px}.solve-ide-reader .course-markdown{font-size:13px}}

/* Practice dashboard - card/graph/list layout modeled on a clean OJ profile. */
.progress-dashboard{max-width:1240px;margin:auto}.progress-account-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.progress-card{background:white;border:1px solid #e0e9e2;border-radius:12px;box-shadow:0 3px 14px #283d2b0a;padding:20px 22px;margin-bottom:16px;min-width:0}
.progress-card h3{margin:0 0 14px;font-size:17px;color:#304b3b}.progress-account-row{display:flex;gap:8px;min-width:0}
.progress-account-row input{min-width:0;flex:1}.progress-account-row button{flex:none}.progress-account-grid .progress-card>button{font-size:12px}
.progress-hint{font-size:11px;color:#879a8e;line-height:1.7;margin:12px 0}.progress-import-area{width:100%;min-height:85px;font:11px/1.5 Consolas,monospace;resize:vertical}
.progress-import-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:12px;flex-wrap:wrap}.progress-import-actions input{width:auto;max-width:100%}
.progress-summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:8px 0 18px}
.progress-metric{border:1px solid #dce9df;border-radius:12px;background:#f6faf7;padding:16px 13px;text-align:center;font-size:13px;font-weight:700;color:#347956}
.progress-rating-pick{display:flex;align-items:center;gap:10px;margin:12px 0}.progress-rating-pick select{width:190px}
.progress-graph{display:block;width:100%;height:auto;max-height:370px;margin:10px 0}
.progress-columns{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:15px;align-items:start}
.progress-difficulty-group{margin:16px 0 22px}.progress-difficulty-chip{display:inline-block;color:white;font-weight:700;font-size:11px;padding:4px 10px;border-radius:4px;margin-bottom:12px}
.progress-id-cloud{display:flex;gap:5px 14px;flex-wrap:wrap;line-height:1.9}.progress-pid{font-family:Consolas,'Atlas Sans',sans-serif;font-weight:700;font-size:12px;letter-spacing:.012em;white-space:nowrap}.progress-id-cloud .progress-pid:hover{text-decoration:underline}
.progress-stat-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:7px 10px;align-items:center;padding:10px 0;border-bottom:1px solid #edf1ee;font-size:11px}
.progress-stat-row strong{font-size:11px;font-weight:600}.progress-stat-row i{grid-column:1/-1;height:4px;border-radius:3px;opacity:.75}.progress-card h4{margin:10px 0;font-size:12px;color:#4b7b61}
@media(max-width:1000px){.progress-account-grid{grid-template-columns:1fr 1fr}.progress-columns{grid-template-columns:minmax(0,1fr) 230px}}
@media(max-width:700px){.progress-account-grid,.progress-columns{grid-template-columns:1fr}.progress-summary{grid-template-columns:1fr 1fr}.progress-card{padding:16px}.progress-account-row{flex-wrap:wrap}}

.oj-table a.practice-solved::after,.problem-card a.practice-solved::after,.progress-pid.practice-solved::after{content:' ✓';color:#23a06c;font-weight:800;margin-left:4px}.practice-status{display:inline-block;margin-top:7px;padding:3px 9px;border-radius:6px;color:#27825f;background:#e5f4ea;font-size:12px;font-weight:700}

/* v21.1 — feedback: restrained solve actions, compact interactive chart, personal settings */
.solve-body-card .section-tools{display:flex;gap:16px;align-items:center}
.solve-body-card .section-tools button,.solve-body-card .section-tools a{
  all:unset;display:inline-flex!important;align-items:center;gap:5px;box-sizing:border-box;
  font-size:12px!important;line-height:1.6;white-space:nowrap;color:#4595c0!important;
  background:transparent!important;border:none!important;box-shadow:none!important;
  border-radius:5px!important;padding:4px 0!important;cursor:pointer;min-height:0!important;
  transition:color .15s ease,opacity .15s ease
}
.solve-body-card .section-tools button:hover,.solve-body-card .section-tools a:hover{color:#197b62!important;opacity:1}
.solve-body-card .section-tools button:focus-visible,.solve-body-card .section-tools a:focus-visible{outline:2px solid #62b78c;outline-offset:3px}
.solve-body-card .section-tools .atlas-icon{width:13px;height:13px;flex:none}
.solve-hero-tabs>button{all:unset;display:inline-flex;align-items:center;height:56px;position:relative;cursor:pointer;font-size:14px;font-weight:650;color:#8b9a90}
.solve-hero-tabs>button:hover{color:#197b62}
.solve-hero-tabs>button:focus-visible{outline:2px solid #62b78c;outline-offset:2px}
.solve-side-grid dd.is-ac{color:#198d5b!important;font-weight:750}
.solve-side-links button{background:none!important;border:none!important;box-shadow:none!important;color:#4b93bf!important;padding:0!important;min-height:0!important;display:inline-flex;font-size:12px}
.account-menu{z-index:1100}
.ui-dialog:has(.account-settings-tabs){width:min(850px,95vw)!important;max-width:850px!important;max-height:min(86vh,900px);overflow:auto;padding:28px}
.account-settings-tabs{display:flex;flex-wrap:wrap;gap:8px;margin:17px 0 20px;border-bottom:1px solid #e4ede7;padding-bottom:12px}
.account-settings-tabs button{padding:10px 15px;border:0;border-radius:9px;background:transparent;color:#698474;font-size:13px;font-weight:650}
.account-settings-tabs button.active{background:#e9f5ec;color:#20764d}
.progress-settings{display:block}
.progress-settings>.progress-account-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.progress-settings .progress-card{padding:17px;margin-bottom:10px}
.progress-settings .progress-account-row{flex-wrap:wrap}
.progress-settings .progress-account-row input{flex:1 1 135px}
.progress-settings .progress-import-area{min-height:95px}
.progress-settings .progress-import-actions{flex-wrap:wrap}
.progress-dashboard .progress-results{margin-top:12px}
.progress-dashboard .progress-graph{width:100%;max-width:760px;height:auto;max-height:255px;margin:0}
.progress-chart-tip{position:absolute;z-index:9;max-width:230px;pointer-events:none;padding:9px 12px;border-radius:8px;background:#243f32;color:#fff;font-size:11px;line-height:1.55;box-shadow:0 9px 28px #16352333}
.progress-chart-tip[hidden]{display:none}
.progress-graph:focus-visible{outline:2px solid #3eae8b}
.progress-card:has(>.progress-graph){position:relative;max-width:810px}
@media(max-width:850px){.progress-settings>.progress-account-grid{grid-template-columns:1fr}.ui-dialog:has(.account-settings-tabs){width:min(95vw,650px)!important}.solve-body-card .section-tools{gap:9px;flex-wrap:wrap}}

.atlas-discussion-list{display:grid;gap:12px;max-height:50vh;overflow:auto;margin:14px 0}.atlas-discussion-item{padding:13px;border:1px solid #e5ede7;border-radius:10px;background:#f9fcfa;white-space:pre-wrap;overflow-wrap:anywhere}.atlas-discussion-item strong{font-size:12px;color:#285740}.atlas-discussion-item small{font-size:10px;margin-left:9px;color:#92a398}.atlas-discussion-item p{font-size:13px;line-height:1.6;margin:7px 0 0}.atlas-discussion-form{display:grid;gap:10px}.atlas-discussion-form textarea{min-height:88px}.atlas-discussion-form button{justify-self:start}


/* Release polish: remove redundant helper captions; preserve validation and sync statuses. */
.page-header>p:empty,.solve-hero-title>p:empty{display:none!important}
.top-brand small,.header-caption,.side-version{display:none!important}
.progress-dashboard .progress-chart-tip{max-width:310px;min-width:165px;white-space:pre-line;font-size:12px;line-height:1.7;padding:12px 15px;border-radius:11px}
.progress-dashboard .progress-card:has(>.progress-graph){max-width:760px;width:100%;margin:14px auto 22px}
.progress-dashboard .progress-graph{max-width:710px;margin:0 auto}
.progress-dashboard .progress-graph circle:focus:not(:focus-visible){outline:none}
.progress-recent-pages{display:flex;flex-wrap:wrap;gap:8px}
.progress-recent-page{display:block;max-width:260px;padding:7px 12px;border-radius:9px;border:1px solid #dae9de;background:#f7fbf8;color:#2e7553;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px;text-decoration:none}
.progress-recent-page:hover{background:#eaf5ed;border-color:#9bc9ac}
.solve-body-card .section-tools>*{border:0!important;box-shadow:none!important;background:transparent!important;color:#43866a!important;min-height:28px!important;padding:4px 7px!important;font-size:12px!important;font-weight:550!important;white-space:nowrap!important}
.solve-body-card .section-tools>*:hover{color:#1e674a!important;background:#eef7f1!important;border-radius:5px!important}

.solve-page .statement-meta{display:none!important}
.solve-page .solve-hero-title>p{display:none!important}

/* Notification center */
.top-actions{position:relative}.notify-bell{position:relative;display:grid;place-items:center;flex:none;width:36px;height:36px;border:1px solid #e2eee6;background:#f9fcfa;color:#4b8061;border-radius:10px;cursor:pointer}.notify-bell:hover{background:#eaf5ef}.notify-bell svg{width:19px;height:19px}.notify-count{position:absolute;right:-6px;top:-7px;background:#e54e52;border:2px solid white;color:white;min-width:19px;height:19px;padding:0 3px;border-radius:99px;font-size:10px;line-height:15px;font-weight:700;text-align:center}.notify-count[hidden]{display:none!important}
.notify-popover{position:absolute;z-index:700;right:0;top:calc(100% + 12px);width:min(370px,calc(100vw - 22px));max-height:min(78vh,600px);display:flex;flex-direction:column;background:#fff;border:1px solid #dce9e1;border-radius:15px;box-shadow:0 18px 50px #173b2c28;overflow:hidden}.notify-head{display:flex;align-items:center;justify-content:space-between;padding:16px 16px 12px;border-bottom:1px solid #ecf1ec}.notify-head strong{font-size:14px}.notify-link{border:0;background:none;color:#258764;font-size:11px;cursor:pointer}.notify-items{flex:1;min-height:0;overflow:auto}.notify-item{width:100%;display:flex;flex-direction:column;align-items:flex-start;gap:5px;text-align:left;border:0;border-bottom:1px solid #f0f3f0;background:white;padding:13px 16px;cursor:pointer;color:#2c4836}.notify-item.unread{background:#edf9f1}.notify-item strong{font-size:12px}.notify-item small{font-size:10px;color:#87998f}.notify-item p{font-size:11px;line-height:1.6;margin:0;white-space:pre-wrap;overflow-wrap:anywhere}.notify-empty{padding:22px;font-size:12px;color:#9aaca0;text-align:center}.notify-foot{display:grid;grid-template-columns:1fr 1.4fr auto;gap:6px;padding:11px;border-top:1px solid #eaf1eb}.notify-foot input{padding:8px;font-size:11px;width:100%}.notify-foot button{border:0;border-radius:8px;background:#258764;color:#fff;padding:0 10px;font-size:11px;cursor:pointer}

/* Manual Luogu sync controls; transient status lives inside notifications only. */
.progress-manual-actions{display:flex;align-items:center;gap:9px;margin-top:10px;flex-wrap:wrap}
.notify-sync-live{padding:12px 14px;margin:8px 0 12px;background:#f1f6f5;border:1px solid #dcebe5;border-radius:11px;font-size:12px;line-height:1.6}
.notify-sync-live strong{display:block;color:#315943;font-size:13px}
.notify-sync-live p{margin:3px 0 0;white-space:pre-wrap;word-break:break-word}
.notify-sync-live.error{background:#fff2ef;border-color:#f4ccbd}
.notify-sync-live.error strong{color:#b8423d}
.notify-sync-live.success{background:#edf8f0}
.atlas-bridge-status{display:none!important}

/* v21.6 - unified administration: shared content rhythm, buttons, tables and grid. */
.admin-dashboard{width:100%;max-width:1220px;margin:0 auto;min-width:0}
.admin-dashboard>.page-header{margin-bottom:19px}
.admin-dashboard-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:0 0 24px}
.admin-dashboard-actions>button,.admin-dashboard-link{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 17px;min-height:40px;border-radius:9px;border:1px solid var(--line);background:#fff;color:#386b50;text-decoration:none;font-weight:600;font-size:12px;box-shadow:none}
.admin-dashboard-actions>button:hover,.admin-dashboard-link:hover{background:#f0f8f2;border-color:#b8d7c2}
.admin-dashboard-sections{display:grid;grid-template-columns:minmax(0,1fr);gap:22px;align-items:start}
.admin-dashboard-sections>.bank-panel,.admin-dashboard-sections>.content-card{max-width:none;width:100%;margin:0;min-width:0;border-radius:14px;padding:25px 28px}
.admin-dashboard-sections h2{font-size:18px;color:#234a35;font-weight:650;margin:0 0 20px}
.admin-sync-card .admin-quick{margin:0 0 18px;gap:9px}
.admin-sync-card .admin-quick>button{min-height:37px;white-space:nowrap}
.admin-sync-card .bank-state-table{margin:0;font-size:13px;border-collapse:collapse;min-width:580px}
.admin-sync-card .bank-state-table th{font-weight:650;color:#6d8576;background:#f5f9f6;font-size:12px}
.admin-sync-card .bank-state-table td,.admin-sync-card .bank-state-table th{padding:13px 16px}
.admin-sync-card>div:not(.admin-quick){overflow-x:auto;max-width:100%}
.admin-create-card .playlist-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:17px 22px;align-items:start}
.admin-create-card .playlist-form>label{margin:0;min-width:0}
.admin-create-card .playlist-form>label:has(textarea),.admin-create-card .playlist-form>label:has(input[type=file]){grid-column:1/-1}
.admin-create-card .playlist-form textarea{min-height:220px}
.admin-create-card .playlist-form>button{min-width:120px;min-height:41px}
/* Users management is a first-party page, not a separate legacy console. */
.users-main{width:100%;max-width:1220px;margin:0 auto;padding:36px 24px 64px}
.users-main>.page-header{margin-bottom:22px}
.users-main .users-card{background:var(--paper);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:26px 28px;margin:0 0 22px}
.users-main .users-card h2{font-size:18px;font-weight:650;color:#234a35;margin:0 0 19px}
.users-main #manager{display:grid;gap:18px;min-width:0}
.users-main #manager[hidden]{display:none!important}
.users-main .users-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:19px 22px}
.users-main .users-form>label{min-width:0}
.users-main label{color:#476250}
.users-main input,.users-main select{width:100%;min-width:0;box-sizing:border-box}
.users-main .users-form-actions{grid-column:1/-1;margin-top:4px}
.users-main .users-toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.users-main .users-toolbar>.user-search{display:flex;align-items:center;gap:8px;flex-direction:row;margin-left:auto}
.users-main .users-toolbar>.user-search>input{width:min(230px,40vw)}
.users-main .users-table-wrap{overflow:auto;max-width:100%}
.users-main #admin-identity{font-weight:650;color:#2f7251}
.users-main .login-card{max-width:470px;margin:34px auto;padding:30px 32px}
.users-main .primary,.users-main .secondary,.users-main .danger{border-radius:9px;min-height:36px;font-weight:600}
@media(max-width:800px){.admin-dashboard-sections>.bank-panel,.admin-dashboard-sections>.content-card{padding:20px}.admin-create-card .playlist-form,.users-main .users-form{grid-template-columns:1fr}.users-main{padding:25px 17px 45px}}
@media(max-width:520px){.admin-dashboard-actions>*{flex:1}.users-main .users-toolbar>.user-search{flex-basis:100%;margin-left:0}.users-main .users-toolbar>.user-search>input{width:100%}.users-main .users-card{padding:20px 17px}}
/* Contain legacy user tables within the same responsive column as every other page. */
.users-main #manager{grid-template-columns:minmax(0,1fr);width:100%}
.users-main #manager>.users-card{min-width:0;max-width:100%;box-sizing:border-box}
.users-main .users-table-wrap{max-width:100%;width:100%;overflow-x:auto;overscroll-behavior-x:contain}
.users-main .users-form>*{min-width:0}

/* Tooltip lives in document.body, never clipped by rating graph cards. */
.progress-chart-tip.atlas-chart-floating{position:fixed!important;z-index:2147482100!important;pointer-events:none!important;
 max-width:min(310px,calc(100vw - 20px));min-width:235px;white-space:pre-line;line-height:1.65;
 box-shadow:0 16px 36px #162b2850;border-radius:12px;padding:13px 16px;transition:none!important}
.progress-chart-tip.atlas-chart-floating[hidden]{display:none!important}
/* Playlist marketplace and responsive display modes. */
.atlas-viewbar{display:flex;align-items:center;justify-content:flex-end;gap:7px;margin:12px 0 18px}
.atlas-view-caption{font-size:12px;color:var(--muted,#829589);margin-right:6px}
.atlas-viewbar button{padding:7px 15px;border-radius:9px}
.atlas-viewbar button.selected{background:#e3f4e9;color:#18835d;border-color:#8ac7a4}
.atlas-playlist-card{position:relative;overflow:hidden;border-top:4px solid var(--playlist-color)}
.atlas-list-preview{display:flex;align-items:center;gap:9px;flex-wrap:wrap;min-height:23px}
.atlas-difficulty-swatch{display:inline-block;width:46px;height:9px;background:var(--playlist-color,#a0b1a4);border-radius:9px;box-shadow:inset 0 0 0 1px #0001;flex-shrink:0}
.atlas-preview-text{font-size:11px;color:var(--ink,#355349);font-weight:600}
.atlas-platform-mark{font-size:10px;padding:3px 7px;border:1px solid #e2eee6;border-radius:6px;color:#668070}
.atlas-list-tags{display:flex;align-items:center;flex-wrap:wrap;gap:7px}
.atlas-list-description{line-height:1.8;overflow:hidden;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical}
.pool-grid.atlas-list-view-list,.pool-grid.atlas-list-view-detail{display:flex;flex-direction:column;gap:11px}
.atlas-list-view-list .pool-card{display:grid;grid-template-columns:minmax(130px,.8fr) minmax(180px,2fr) auto;align-items:center;min-height:0;padding:15px 21px;gap:8px 22px}
.atlas-list-view-list .pool-card>h3{grid-column:1;grid-row:1;margin:0;font-size:16px}
.atlas-list-view-list .pool-card>.atlas-list-preview{grid-column:2;grid-row:1}
.atlas-list-view-list .pool-card>.row:first-child{grid-column:1;grid-row:2}
.atlas-list-view-list .pool-card>.atlas-list-description{display:none}
.atlas-list-view-list .pool-card>.atlas-list-tags{display:none}
.atlas-list-view-list .pool-card>.pool-metadata{grid-column:2;grid-row:2;padding:0;border:0}
.atlas-list-view-list .pool-card>.row:last-child{grid-column:3;grid-row:1/span 2}
.atlas-list-view-detail .pool-card{min-height:170px;display:grid;grid-template-columns:minmax(190px,1fr) minmax(220px,2fr) auto;gap:11px 22px;padding:19px 25px;align-items:start}
.atlas-list-view-detail .pool-card>h3{grid-column:1;grid-row:2;margin:0}
.atlas-list-view-detail .pool-card>.atlas-list-preview{grid-column:2;grid-row:1}
.atlas-list-view-detail .pool-card>.atlas-list-description{grid-column:2;grid-row:2;display:block;margin:0}
.atlas-list-view-detail .pool-card>.atlas-list-tags{grid-column:2;grid-row:3}
.atlas-list-view-detail .pool-card>.pool-metadata{grid-column:1;grid-row:3}
.atlas-list-view-detail .pool-card>.row:last-child{grid-column:3;grid-row:2}
.atlas-list-detail{border-top:5px solid var(--playlist-color,#d8e7dd)}
.atlas-list-detail .atlas-list-preview{margin:14px 0}
.atlas-list-detail-meta{font-size:12px;color:#6b8679}
.atlas-locked-panel{padding:46px 28px;border-radius:15px;border:1px dashed #bddbcc;background:#f7fbf8;text-align:center}
.atlas-locked-panel h2{font-size:21px;color:#25553d}
.atlas-locked-panel p{max-width:520px;margin:auto;color:#627c6d;line-height:1.9}
.atlas-coin-admin-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;align-items:end}
.atlas-coin-admin-grid button{justify-self:start}
@media(max-width:860px){.atlas-list-view-list .pool-card,.atlas-list-view-detail .pool-card{display:flex;flex-direction:column;gap:9px}.atlas-list-view-list .pool-card>.atlas-list-description{display:-webkit-box}.atlas-list-view-list .pool-card>.atlas-list-tags{display:flex}.atlas-coin-admin-grid{grid-template-columns:1fr}}