:root{color-scheme:light;--bg:#f4f5f3;--paper:#fff;--ink:#202925;--muted:#758078;--border:#dce2dd;--accent:#166b4c;--soft:#eaf5ee;--warn:#966416;--warm:#fff6e5;--editor-line-height:26px;--error-row:#ffeef0;--error-gutter:#ffdce0;--error-token:#fdb8c0;--fix-row:#e6ffed;--fix-gutter:#cdffd8;--fix-token:#acf2bd}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.6 system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif}main{width:100%;margin:0;padding:12px 16px 18px}header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;gap:12px 20px}.brand{display:flex;align-items:center;gap:9px}.logo{display:grid;place-items:center;border-radius:9px;width:34px;height:34px;background:var(--ink);color:white;font:20px ui-monospace,monospace}.brand h1{font-size:20px;letter-spacing:-.7px;margin:0;font-weight:650}.brand p{margin:0;color:var(--muted);font-size:12px}.badge{display:inline-flex;gap:7px;align-items:center;padding:7px 12px;border:1px solid var(--border);border-radius:20px;font-size:12px;background:var(--paper)}.dot{width:6px;height:6px;border-radius:50%;background:#259466}.top{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;gap:10px}.top h2{font-size:25px;font-weight:600;margin:0 0 3px}.top p{margin:0;color:var(--muted);font-size:13px}.toolbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap}button,select{font:inherit;font-size:13px;color:var(--ink);border:1px solid var(--border);background:white;border-radius:7px;padding:6px 10px;cursor:pointer}button:hover{border-color:#9bab9f;background:#f8faf8}button:disabled{opacity:.4;cursor:default}.primary{background:var(--accent);border-color:var(--accent);color:white;padding:6px 16px}.primary:hover{background:#125a40;color:white}.subtle{background:transparent}.editors{display:grid;grid-template-columns:1fr 1fr;gap:18px}.panel{border:1px solid var(--border);border-radius:12px;overflow:hidden;background:var(--paper);box-shadow:0 2px 3px #23332a03}.panel-head{display:flex;align-items:center;justify-content:space-between;padding:8px 14px;border-bottom:1px solid var(--border);gap:6px}.panel-head h2{font-size:13px;margin:0;font-weight:600}.caps{font:11px ui-monospace,monospace;color:var(--muted);letter-spacing:.7px}.panel-head button{padding:3px 9px;font-size:12px}.panel-head .toolbar{gap:5px}textarea{width:100%;height:520px;height:clamp(280px,calc(100vh - 260px),900px);resize:vertical;border:0;outline:0;padding:18px 20px;font:14px/var(--editor-line-height) ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;tab-size:2;color:#334155;background:white;display:block;white-space:pre;overflow:auto}textarea::placeholder{color:#a5afa7}.panel-foot{border-top:1px solid #edf0ed;padding:7px 17px;color:var(--muted);font-size:11px;display:flex;justify-content:space-between}.state{padding:10px 14px;border:1px solid var(--border);border-radius:9px;background:white;margin:12px 0;display:flex;flex-wrap:wrap;align-items:start;justify-content:space-between;gap:6px 20px}.state.good{background:var(--soft);border-color:#cfe5d7}.state.warn{background:var(--warm);border-color:#ecddbd}.state strong{font-size:13px;font-weight:600}.state span{font-size:12px;color:var(--muted)}.state strong,.state span{min-width:0;max-width:100%;white-space:normal;overflow-wrap:anywhere}.diagnostics{min-height:88px}.empty{color:var(--muted);font-size:13px;padding:10px 2px}.issue{display:grid;grid-template-columns:30px 1fr;gap:10px;padding:12px 0;border-bottom:1px solid var(--border)}.num{width:24px;height:24px;border:1px solid var(--border);border-radius:6px;display:grid;place-items:center;font:11px ui-monospace,monospace;background:white}.issue-title{font-size:13px;display:flex;gap:10px;align-items:baseline;flex-wrap:wrap}.issue-title small{color:var(--muted);font-size:11px}.change{font:12px/1.7 ui-monospace,Consolas,monospace;margin-top:5px;overflow-wrap:anywhere;color:#56675c}.change code{white-space:pre-wrap;border-radius:4px;padding:2px 5px}.before{background:#f7e9e6;color:#985746}.after{background:#e5f1e9;color:#236f4b}.notice{font-size:12px;color:var(--warn);margin:7px 0}.help{font-size:11px;color:var(--muted);margin:10px 0}.footer{border-top:1px solid var(--border);padding-top:15px;margin-top:24px;display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--muted);font-size:11px}.footer button{font-size:11px;padding:4px 8px}#alt-wrap{display:none;align-items:center;gap:8px;margin:8px 0;font-size:12px}#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;padding:8px 18px;border-radius:8px;font-size:13px;display:none;box-shadow:0 5px 20px #0002}details{margin-top:18px;font-size:12px;color:var(--muted)}summary{cursor:pointer}details p{max-width:950px}kbd{background:white;border:1px solid var(--border);padding:1px 4px;border-radius:3px}
.panel{min-width:0}.code-surface{position:relative;background:#fff}.code-surface pre{position:absolute;z-index:2;inset:0;margin:0;border:0;padding:18px 20px;font:14px/var(--editor-line-height) ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;tab-size:2;white-space:pre;overflow:hidden;pointer-events:none;color:#334155}.code-surface textarea{position:relative;z-index:3;color:transparent;-webkit-text-fill-color:transparent;caret-color:#334155;background:transparent;white-space:pre}.code-surface textarea::placeholder{color:#a5afa7;-webkit-text-fill-color:#a5afa7}.code-surface textarea::selection{background:#6395e847;color:transparent}.code-surface mark{font:inherit;padding:0;border-radius:0}.code-surface .error-mark{color:inherit;background:var(--error-token)}.code-surface .fix-mark{color:inherit;background:var(--fix-token)}.point-marker{display:inline-block;width:0;height:0;position:relative;vertical-align:baseline}.point-marker::after{content:"";position:absolute;z-index:-1;left:0;bottom:-.15em;width:1ch;height:1.2em;background:var(--mark-bg);border-radius:2px}.error-point{--mark-bg:var(--error-token)}.fix-point{--mark-bg:var(--fix-token)}.blank-slot{background:var(--mark-bg);border-radius:2px}.format-toggle{display:inline-flex;align-items:center;gap:5px;white-space:nowrap;font-size:12px;cursor:pointer;padding:3px 0;color:#4b6255}.format-toggle input{width:14px;height:14px;margin:0;accent-color:var(--accent)}.legend-error{color:#c52239}.legend-fix{color:#087744}.panel-foot{gap:8px}.panel-head{flex-wrap:wrap}

.editor-shell{position:relative;isolation:isolate;display:flex;align-items:stretch;min-width:0}.code-surface{flex:1;min-width:0}.line-gutter{position:relative;flex:none;min-width:46px;background:#f8faf8;border-right:1px solid #edf0ed;overflow:hidden;user-select:none;padding:0 11px}.line-gutter pre{position:relative;z-index:2;margin:0;min-width:2ch;padding:18px 0;overflow:hidden;text-align:right;color:#9aa59e;font:14px/var(--editor-line-height) ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;white-space:pre}.panel-foot{flex-wrap:wrap}#cursor-position{font-variant-numeric:tabular-nums;white-space:nowrap;color:#566b5e}
/* Row backgrounds stay fixed horizontally; only the text pane scrolls sideways. */
.row-highlights{position:absolute;inset:0;z-index:1;overflow:hidden;pointer-events:none}
.row-track{position:absolute;inset:0}
.row-highlight{position:absolute;left:0;right:0;background:var(--row-bg)}
.row-highlight::before{content:"";position:absolute;inset:0 auto 0 0;width:var(--gutter-width);background:var(--gutter-bg)}
.error-row{--row-bg:var(--error-row);--gutter-bg:var(--error-gutter)}
.fix-row{--row-bg:var(--fix-row);--gutter-bg:var(--fix-gutter)}

.review-issue .num{color:#c52239;background:var(--error-row);border-color:var(--error-token)}.review-issue .issue-title>span{color:#a81d30}.review-note{padding:10px 12px;background:var(--error-row);border-radius:7px;color:#8c2431}
.model-notes{border-top:1px solid var(--border);padding-top:15px}.model-notes summary{font-size:13px;font-weight:600;color:var(--ink)}.model-notes p{line-height:1.8}
/* A fixed title column keeps the format menu still when the title changes. */
header{flex-wrap:wrap}.brand{min-width:0;flex:0 0 320px}.brand>div:last-child{min-width:0}.logo{flex:none}.brand h1{overflow-wrap:anywhere}.language-picker{display:flex;align-items:center;gap:8px;margin-inline-start:auto;color:var(--muted);font-size:12px;position:relative;z-index:10}.language-dropdown{position:relative;direction:ltr}.language-toggle{display:flex;align-items:center;gap:9px;min-width:174px;justify-content:space-between}.language-toggle .flag{flex:none}.language-toggle #language-name{flex:1;text-align:start}.flag{width:24px;height:16px;flex:none;border-radius:2px;box-shadow:0 0 0 1px #20292515}.chevron{width:12px;height:12px;flex:none;transition:transform .15s}.language-toggle[aria-expanded="true"] .chevron{transform:rotate(180deg)}.language-menu{position:absolute;right:0;top:calc(100% + 7px);width:250px;max-width:calc(100vw - 30px);max-height:65vh;overflow-y:auto;background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:5px;box-shadow:0 8px 28px #20332a20}.language-menu[hidden]{display:none}.language-menu a{display:flex;align-items:center;gap:11px;padding:8px 10px;border-radius:6px;text-decoration:none;color:var(--ink);font-size:13px}.language-menu a:hover,.language-menu a:focus-visible{background:#f2f6f3}.language-menu a[aria-selected="true"]{background:var(--soft);color:var(--accent);font-weight:600}.language-menu a:focus-visible{outline-offset:-2px}.editors,.editor-shell,.code-surface pre,textarea,.change,.top,.format-menu{direction:ltr}.code-surface pre,textarea,.change{text-align:left}html[dir="rtl"] .panel-head,html[dir="rtl"] .panel-foot{direction:rtl}html[dir="rtl"] .language-menu{left:0;right:auto}.format-menu{display:flex;flex:0 1 auto;gap:5px;min-width:0;max-width:100%;margin:0;margin-inline-start:14px;overflow-x:auto}.format-menu a{display:inline-block;text-decoration:none;color:var(--ink);white-space:nowrap;border:0;border-bottom:3px solid transparent;border-radius:7px 7px 0 0;background:transparent;padding:6px 16px;font-size:13px;font-weight:600;letter-spacing:.3px}.format-menu a[aria-current="page"]{border-bottom-color:var(--accent);color:var(--accent);background:#eaf5ee}.format-toggle:has(input:disabled){opacity:.55;cursor:default}a:focus-visible,button:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
@media(max-width:1050px){header .brand{flex:0 1 auto}header .format-menu{order:3;flex-basis:100%;margin-inline-start:0}}
@media(max-width:800px){main{padding:10px 12px}.editors{grid-template-columns:1fr}.top{align-items:center;flex-wrap:wrap}.top select{max-width:100%}.top .primary{margin-left:auto}.format-menu a{display:inline-block;text-decoration:none;color:var(--ink);white-space:nowrap;padding:5px 12px}textarea{height:400px;height:clamp(360px,60vh,620px)}header{margin-bottom:16px}.top h2{font-size:22px}.state{align-items:start;flex-direction:column;gap:3px}.panel-foot{flex-wrap:wrap}}
.line-gutter{min-width:68px;padding-left:33px}.fold-gutter{position:absolute;z-index:4;top:18px;left:3px;width:24px}.fold-button{position:absolute;left:0;width:23px;height:var(--editor-line-height);padding:0;border:0;border-radius:3px;background:transparent;color:#718379;line-height:var(--editor-line-height)}.fold-button:hover{background:#dce9df;color:#166b4c}.example-toggle{font-size:13px}.code-surface textarea{min-height:140px}
/* Local SVG icons remain separate from translated button labels. */
.language-label{display:inline-flex;align-items:center;gap:5px;white-space:nowrap}
.control-symbols{position:absolute;width:0;height:0;overflow:hidden;pointer-events:none}
.control-icon{width:14px;height:14px;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;pointer-events:none}
.icon-button{display:inline-flex;align-items:center;justify-content:center;gap:5px;white-space:nowrap;vertical-align:middle}
.panel-head h2{flex:none}.panel-head .toolbar{margin-inline-start:auto;justify-content:flex-end;max-width:100%;row-gap:6px}
/* Reserve red/green for diagnostics; syntax uses blue, brown, amber and slate. */
.syntax-key,.syntax-attribute{color:#1e40af}.syntax-string{color:#6b4e00}.syntax-number{color:#704214}.syntax-keyword{color:#704214}.syntax-comment{color:#475569}.syntax-tag{color:#3347a0}.syntax-punctuation{color:#475569}.syntax-entity,.syntax-meta{color:#704214}
.editor-tooltip{position:fixed;z-index:1200;max-width:min(440px,calc(100vw - 24px));padding:10px 13px;background:#202b35;color:#f6f8fa;border:1px solid #475464;border-radius:8px;box-shadow:0 6px 24px #17233130;white-space:pre-wrap;overflow-wrap:anywhere;font-size:12px;line-height:1.6;pointer-events:none;max-height:calc(100dvh - 24px);overflow:hidden}.editor-tooltip[hidden]{display:none}
#editor-workspace[data-fullscreen="true"]{position:fixed;inset:0;z-index:1000;background:var(--bg);padding:18px;display:flex;flex-direction:column;overflow:hidden}
#editor-workspace[data-fullscreen="true"] .top{flex:none;margin-bottom:12px;align-items:center}
#editor-workspace[data-fullscreen="true"] .state{flex:none;margin:12px 0 0}
#editor-workspace[data-fullscreen="true"] .editors{flex:1;min-height:0;grid-template-rows:minmax(0,1fr)}
#editor-workspace[data-fullscreen="true"] .panel{display:flex;flex-direction:column;min-height:0}
#editor-workspace[data-fullscreen="true"] .panel-head,#editor-workspace[data-fullscreen="true"] .panel-foot{flex:none}
#editor-workspace[data-fullscreen="true"] .editor-shell{flex:1;min-height:0}
#editor-workspace[data-fullscreen="true"] textarea{position:absolute;inset:0;height:100%!important;min-height:0;resize:none}
#toast{z-index:1300}
@media(max-width:800px){#editor-workspace[data-fullscreen="true"]{padding:10px}#editor-workspace[data-fullscreen="true"] .editors{grid-template-rows:repeat(2,minmax(0,1fr));gap:10px}#editor-workspace[data-fullscreen="true"] .panel-head{padding:7px 10px}#editor-workspace[data-fullscreen="true"] .panel-foot{padding:3px 10px}#editor-workspace[data-fullscreen="true"] .panel-foot .legend-error,#editor-workspace[data-fullscreen="true"] .panel-foot .legend-fix{display:none}}