:root{--bg:#f4f5f0;--panel:#fff;--ink:#1b2924;--muted:#647168;--line:#e2e8df;--green:#176555;--soft:#eaf2e9;--lime:#d5ed9b;--orange:#a55d26;--shadow:0 12px 40px #14372a08;font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;font-size:14px;color-scheme:light}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink)}body.dark{--bg:#111b18;--panel:#192620;--ink:#e1ece5;--muted:#9ead9e;--line:#304138;--green:#9bdbb5;--soft:#243c2d;--lime:#739d41;--orange:#efb37f;color-scheme:dark}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,select{cursor:pointer}button{background:var(--panel);color:var(--ink);border:1px solid var(--line);border-radius:8px;padding:10px 14px;transition:background .15s}button:hover{background:var(--soft)}button:disabled{opacity:.45;cursor:not-allowed}a:focus-visible,button:focus-visible,select:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid 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145px)}.eyebrow{font-size:10px;color:var(--green);letter-spacing:2px;font-weight:650;text-transform:uppercase}.page-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:26px}h1{font-size:31px;letter-spacing:-1px;font-weight:650;margin:12px 0}h2{font-size:17px;font-weight:650;margin:0}h3{font-size:14px;margin:0 0 13px}p{line-height:1.8}.subtitle{color:var(--muted);font-size:12px;margin:0;max-width:700px}.primary{background:var(--green);color:var(--panel);border-color:var(--green)}.dark .primary{color:#112318}.head-actions{display:flex;gap:8px;flex-shrink:0}.notice{padding:12px 16px;border:1px solid var(--line);border-left:3px solid #86a858;border-radius:7px;background:var(--panel);font-size:11px;line-height:1.8;color:var(--muted);margin-bottom:24px}.notice strong{color:var(--green)}.notice.demo{border-left-color:#c58a4a;background:color-mix(in srgb,var(--panel) 90%,#ead28c)}.hero{display:grid;grid-template-columns:1.5fr 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var(--line)}.brand{font-size:20px}.brand-symbol{width:34px;height:34px;font-size:21px}.brand-en{font-size:8px}.nav-label,.sidebar-bottom{display:none}nav{display:flex;overflow:auto;gap:5px;margin-top:15px}nav a{white-space:nowrap;padding:8px 10px;font-size:11px}nav a span{display:none}.workspace{margin:0}.topbar{padding:0 18px;height:63px}.topbar>span{display:none}.topbar>div{justify-content:space-between;width:100%}main{padding:24px 18px}.page-head{align-items:start;flex-direction:column;gap:16px}h1{font-size:26px}.hero{padding:23px}.hero h2{font-size:23px}.hero-art{display:none}.hero{grid-template-columns:1fr}.stats{grid-template-columns:1fr 1fr}.stat-value{font-size:25px}.task-grid,.two-cols{grid-template-columns:1fr}.panel-head{padding:18px}.filters{padding:15px}.filters input{min-width:100%;width:100%}.panel-body{padding:18px}td{padding:15px}.batch-meta{flex-wrap:wrap;gap:10px}footer{padding:20px 18px;gap:15px}footer span{display:none}.notice{font-size:11px}.compare-pick label{font-size:11px}.skip{left:15px}}
.primary:hover{background:var(--green);filter:brightness(.95)}
.topbar>div{flex-wrap:wrap}@media(max-width:760px){.topbar{height:auto;min-height:63px;padding-top:12px;padding-bottom:12px}.topbar>div{justify-content:flex-start;gap:8px}.topbar .version{margin-left:auto}}
.answer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:20px}.answer-grid .panel{min-width:0}.answer-grid pre{max-height:650px;overflow:auto}.matrix-table th{max-width:190px;white-space:normal;line-height:1.6}.matrix-table td:first-child{min-width:200px}.matrix-table td button{font-size:11px;padding:7px 9px}.matrix-table td button.link{padding:0}.matrix-table td small{font-size:9px}@media(max-width:760px){.answer-grid{grid-template-columns:1fr}}

.chart-legend{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.chart-legend a{display:flex;align-items:flex-start;gap:8px;font-size:12px;overflow-wrap:anywhere}.chart-legend i{width:8px;height:8px;flex-shrink:0;border-radius:50%;margin-top:5px}.chart-legend small{display:block;color:var(--muted);margin-top:4px}.chart a:focus circle{stroke:var(--ink);stroke-width:3px}@media(max-width:600px){.chart-legend{grid-template-columns:1fr}}

.mobile-theme{display:none}@media(max-width:760px){.sidebar{position:relative}.mobile-theme{display:block;position:absolute;top:17px;right:18px;padding:7px 12px}}

.sidebar{overflow-y:auto}

/* One measurement scope, shared across every view. */
.scope-bar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:14px 18px;margin:0 0 16px;border:1px solid var(--line);border-radius:10px;background:var(--bg)}
.scope-bar label{display:flex;flex-direction:column;gap:6px;font-size:12px;font-weight:600}
.scope-bar select{max-width:340px;padding:8px;border:1px solid var(--line);border-radius:6px;color:var(--ink);background:var(--bg)}
.scope-bar span{font-size:12px;line-height:1.7;flex:1;min-width:180px}
.scope-bar small,.list-note{color:var(--muted)}
.list-note{margin:0 20px 12px;font-size:11px;line-height:1.7}
@media(max-width:620px){.scope-bar{gap:10px;padding:12px}.scope-bar label{flex:1;min-width:130px}.scope-bar select{width:100%;max-width:100%;font-size:12px}.scope-bar span{width:100%}.page-head{margin-bottom:16px}.page-head h1{font-size:28px}}

.core-actions{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 18px;align-items:center}.core-actions button,.core-actions a{font-size:12px}.core-actions a{color:var(--green);margin-left:4px}.definition-table{white-space:normal;min-width:700px;line-height:1.8}.definition-table td{vertical-align:top;min-width:140px;max-width:360px}.definition-table td small{line-height:1.8}.scope-bar select{max-width:290px}.head-actions{flex-wrap:wrap}@media(max-width:760px){.scope-bar label{min-width:130px}.scope-bar select{max-width:100%}.core-actions button{flex:1;min-width:140px}}

[hidden]{display:none!important}.button-link{border:1px solid var(--line);background:var(--panel);border-radius:7px;padding:10px 14px;font-size:12px;display:inline-block}.button-link:hover{border-color:var(--green);color:var(--green)}#challenge-context{display:flex;align-items:center;gap:12px;font-size:11px;color:var(--muted)}.challenge-category-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:10px;padding:22px}.challenge-category-grid button{display:flex;flex-direction:column;align-items:flex-start;gap:14px;padding:15px 12px;white-space:normal;text-align:left}.challenge-category-grid button span{font-size:11px}.challenge-category-grid button strong{font-size:23px;font-weight:550}.challenge-category-grid button.selected{background:var(--green);color:var(--panel);border-color:var(--green)}.challenge-search-label{flex:1;min-width:200px}.challenge-search-label input{width:100%}.filters label{display:flex;flex-direction:column;gap:7px;font-size:11px;color:var(--muted)}.challenge-task-grid h3 a:hover{text-decoration:underline;text-underline-offset:4px}.challenge-card-link{font-size:12px;color:var(--green);text-decoration:underline;text-underline-offset:4px}.challenge-rules{font-size:13px;line-height:1.9;padding-left:20px}.challenge-anchor ol{font-size:12px;line-height:1.85;padding-left:22px}.challenge-anchor li{padding:6px 2px}.challenge-score-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:18px 0}.challenge-score-grid>div{border:1px solid var(--line);background:var(--bg);border-radius:8px;padding:16px;display:flex;flex-direction:column;gap:9px}.challenge-score-grid strong{font-size:21px;font-weight:550}.challenge-score-grid small,.challenge-score-grid span{font-size:11px;color:var(--muted)}.challenge-checks{list-style:none;padding:0;margin:18px 0}.challenge-checks li{display:flex;align-items:baseline;gap:10px;border-top:1px solid var(--line);padding:12px 0;font-size:12px}.challenge-checks li>span:nth-child(2){flex:1}.challenge-checks small{font-size:10px;color:var(--muted);margin-left:7px}.challenge-fixture{margin-top:15px}.challenge-fixture>summary{line-height:1.9}#challenge-answer{width:100%;box-sizing:border-box;margin:12px 0;resize:vertical;min-height:150px;padding:15px;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:8px;font-family:Consolas,"Microsoft YaHei",monospace;font-size:12px;line-height:1.8}.challenge-assessment details{font-size:12px;line-height:1.8}.challenge-assessment ul{line-height:1.9}.challenge-task-grid .tag{white-space:normal}.challenge-task-grid .task-card{min-width:0}.challenge-task-grid h3,.challenge-task-grid p{overflow-wrap:anywhere}@media(max-width:1200px){.challenge-category-grid{grid-template-columns:repeat(4,1fr)}}@media(max-width:760px){.challenge-category-grid{grid-template-columns:repeat(2,minmax(0,1fr));padding:16px}.challenge-category-grid button{flex-direction:row;align-items:center;justify-content:space-between}.challenge-score-grid{grid-template-columns:1fr}.challenge-score-grid>div{padding:13px}.challenge-score-grid strong{font-size:19px}#challenge-context{flex-wrap:wrap;gap:7px;font-size:10px}.challenge-task-grid{grid-template-columns:1fr}.challenge-fixture{padding:12px}.challenge-fixture details{padding:12px}.challenge-assessment .notice{overflow-wrap:anywhere}.challenge-search-label{min-width:100%}}
