:root{color-scheme:light;--page:#d6e6e0;--panel:#edf5f0;--soft:#bad6cc;--text:#183335;--muted:#405b55;--accent:#0e6056;--on-accent:#fff;--border:#91aea3;--edge:#518c80;--input:#f3f8f5;--removed:#f9e1dd;--removed-text:#7d2920;--added:#d1edda;--added-text:#205b35;--focus:#07574d}
:root[data-theme=dark]{color-scheme:dark;--page:#11191c;--panel:#192429;--soft:#203b35;--text:#e9f3f3;--muted:#a8bdc0;--accent:#5dd4bd;--on-accent:#0e2620;--border:#405956;--edge:#5e9d90;--input:#11191c;--removed:#472d30;--removed-text:#ffbcb4;--added:#244534;--added-text:#a8eac0;--focus:#84ead4}
*{box-sizing:border-box}body{margin:0;min-height:100vh;display:flex;flex-direction:column;background:var(--page);color:var(--text);font:16px/1.6 system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}a{color:var(--accent);text-underline-offset:3px}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.5}button:focus-visible,a:focus-visible,textarea:focus-visible{outline:3px solid var(--focus);outline-offset:3px}[hidden]{display:none!important}.skip-link{position:absolute;top:8px;left:16px;transform:translateY(-160%);z-index:2;padding:10px 16px;background:var(--panel)}.skip-link:focus{transform:translateY(0)}.site-header{background:var(--panel);border-bottom:1px solid var(--border)}.header-inner,.footer-inner{max-width:1240px;margin:auto;padding:22px 32px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;font-size:20px;font-weight:650;letter-spacing:-.5px}.brand{max-width:100%;flex-shrink:0}.brand-logo{display:block;width:266px;height:auto;max-width:100%}.brand-logo-dark{display:none}:root[data-theme=dark] .brand-logo-light{display:none}:root[data-theme=dark] .brand-logo-dark{display:block}.theme-toggle{border:0;background:transparent;color:var(--text);display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:8px 0;font-size:14px;margin-left:auto}.switch-track{display:inline-flex;align-items:center;width:38px;height:22px;padding:3px;border-radius:20px;background:var(--border)}.switch-thumb{width:16px;height:16px;background:var(--panel);border-radius:50%}.theme-toggle[aria-checked=true] .switch-track{background:var(--accent)}.theme-toggle[aria-checked=true] .switch-thumb{transform:translateX(16px)}main{width:100%;max-width:1240px;margin:0 auto;padding:38px 32px;flex:1}h1,h2,h3,p{margin:0}h1{font-size:clamp(30px,4vw,46px);line-height:1.15;letter-spacing:-1.3px}h2{font-size:23px;line-height:1.3;letter-spacing:-.5px}h3{font-size:18px}p{color:var(--muted)}.page-heading{margin-bottom:28px}.page-heading p{margin-top:12px;max-width:760px}.privacy-note{font-size:14px;color:var(--accent);margin-top:12px}.panel{background:var(--panel);border:1px solid var(--edge);border-radius:14px;box-shadow:0 3px 0 var(--soft);padding:24px}.button{display:inline-flex;justify-content:center;align-items:center;padding:9px 16px;min-height:44px;border:1px solid var(--edge);border-radius:6px;background:var(--panel);color:var(--text);text-decoration:none;font-size:14px;font-weight:600}.button:hover:not(:disabled){background:var(--soft)}.button.primary{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}.button.primary:hover:not(:disabled){filter:brightness(.9)}.button.small{padding:5px 11px;font-size:13px}.actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.site-footer{background:var(--soft);border-top:1px solid var(--border);font-size:14px}.footer-inner nav{display:flex;gap:18px;flex-wrap:wrap}.footer-inner a{color:var(--muted)}.tool-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr));gap:20px;margin-top:20px}.tool-card{display:block;text-decoration:none;color:var(--text)}.tool-card:hover{background:var(--soft);border-color:var(--accent)}.tool-card h3{margin-bottom:8px}.tool-card .open-tool{display:block;margin-top:20px;color:var(--accent);font-weight:600}.hero{background:linear-gradient(110deg,var(--page),var(--soft));padding:40px 32px;border-radius:14px;margin-bottom:36px}.hero-description{margin-top:18px}.change-marker{flex:0 0 1.3em;padding-top:6px;text-align:center;font-weight:700}.prose{max-width:780px}.prose h2{margin:30px 0 12px}.prose h3{margin:20px 0 8px}.prose p+p{margin-top:12px}.prose li{margin-bottom:8px}.prose code{overflow-wrap:anywhere}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.inputs{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px}.input-heading{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:8px;flex-wrap:wrap}.input-heading label{font-weight:600}.input-heading .actions{gap:6px}textarea{display:block;width:100%;min-height:200px;resize:vertical;padding:14px;border:1px solid var(--edge);border-radius:6px;background:var(--input);color:var(--text);font:15px/1.6 ui-monospace,SFMono-Regular,Consolas,monospace;tab-size:4}.input-help{margin:0 0 16px;font-size:14px}.message{margin-top:14px;color:var(--text)}.message.error{color:var(--removed-text)}.results{margin-top:28px}.result-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:14px}.legend{font-size:14px;display:flex;gap:18px;flex-wrap:wrap;margin-bottom:14px}.legend .removed{color:var(--removed-text)}.legend .added{color:var(--added-text)}.diff-labels,.diff-row{display:grid;grid-template-columns:1fr 1fr}.diff-labels{font-weight:600;background:var(--soft);border:1px solid var(--edge);border-radius:10px 10px 0 0}.diff-labels span{padding:10px 14px}.diff-labels span+span{border-left:1px solid var(--border)}.diff-output{max-height:480px;overflow:auto;overscroll-behavior:contain;border:1px solid var(--edge);border-top:0;background:var(--input);border-radius:0 0 10px 10px}.diff-row{scroll-margin:12px}.diff-cell{display:flex;align-items:stretch;min-width:0;border-bottom:1px solid var(--border);font:14px/1.7 ui-monospace,SFMono-Regular,Consolas,monospace}.diff-cell+.diff-cell{border-left:1px solid var(--border)}.line-number{color:var(--muted);flex:0 0 4.3em;text-align:right;padding:6px 8px;border-right:1px solid var(--border);user-select:none}.line-content{white-space:pre-wrap;overflow-wrap:anywhere;padding:6px 10px;min-width:0;flex:1;tab-size:4}.diff-cell.deleted{background:var(--removed)}.diff-cell.inserted{background:var(--added)}.diff-cell.placeholder{background:var(--page)}.diff-cell del{background:var(--removed);color:var(--removed-text);text-decoration:underline;text-decoration-style:dotted}.diff-cell ins{background:var(--added);color:var(--added-text);text-decoration:underline}.diff-row.current{outline:2px solid var(--focus);outline-offset:-2px}.newline{color:var(--muted);font-size:12px}.help-columns{display:grid;grid-template-columns:1fr 1fr;gap:42px;margin-top:32px}.help-columns p+p{margin-top:12px}.help-columns h2{margin-bottom:12px}.help-columns h3{margin:22px 0 8px}.help-columns ol{padding-left:24px;margin-top:0}.help-columns li{color:var(--muted);margin-bottom:8px}.example{background:var(--input);border:1px solid var(--border);border-radius:6px;padding:14px;white-space:pre-wrap;overflow-wrap:anywhere;font:14px/1.6 ui-monospace,monospace}.help-columns a{overflow-wrap:anywhere}.noscript{margin-bottom:20px}
@media(max-width:700px){.header-inner,.footer-inner{padding:16px 20px}.brand{font-size:17px}main{padding:28px 20px}.inputs,.help-columns{grid-template-columns:1fr}.panel{padding:18px}.hero{padding:28px 20px}.help-columns{gap:26px}.diff-cell{font-size:12px}.line-number{flex-basis:2.9em;padding:6px 4px}.line-content{padding:6px}.diff-output{max-height:420px}textarea{font-size:16px}.theme-toggle{font-size:13px}.footer-inner{align-items:flex-start}.footer-inner nav{gap:12px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
.privacy-callout{display:flex;align-items:center;gap:14px;margin-bottom:28px;padding:16px 20px;background:var(--soft);border:1px solid var(--edge);border-left:4px solid var(--accent);border-radius:10px}.privacy-callout-icon{flex:0 0 32px;color:var(--accent)}.privacy-callout p{color:var(--text);font-size:15px;line-height:1.6}.privacy-callout a{font-weight:600;white-space:nowrap}
@media(max-width:700px){.privacy-callout{align-items:flex-start;gap:12px;padding:14px 16px}.privacy-callout-icon{margin-top:2px}}
.base64-modes{margin:16px 0}.base64-modes .button[aria-pressed=true]{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}.base64-grid>section{min-width:0}.base64-meta{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0}.base64-meta dt{font-size:13px;color:var(--muted)}.base64-meta dd{margin:2px 0 0;font-weight:600;overflow-wrap:anywhere}.base64-filename{display:block;width:100%;min-height:44px;padding:9px 12px;margin:6px 0 14px;border:1px solid var(--edge);border-radius:6px;background:var(--input);color:var(--text)}.base64-filename:focus-visible,.base64-preview:focus-visible,input[type=file]:focus-visible{outline:3px solid var(--focus);outline-offset:3px}.base64-preview{min-height:200px;max-height:420px;overflow:auto;padding:14px;margin-bottom:16px;background:var(--input);border:1px solid var(--edge);border-radius:6px;color:var(--muted);overflow-wrap:anywhere}.base64-preview pre{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;color:var(--text);font:14px/1.6 ui-monospace,SFMono-Regular,Consolas,monospace}.base64-preview img{display:block;max-width:100%;max-height:380px;margin:auto;object-fit:contain}.base64-dropzone{padding:22px 16px;margin-bottom:14px;border:2px dashed var(--edge);border-radius:8px;background:var(--input)}.base64-dropzone label{display:block;margin-bottom:12px}.base64-dropzone input{display:block;width:100%;max-width:100%;font-size:14px}.base64-dropzone.drag{background:var(--soft)}.base64-dropzone input::file-selector-button{padding:10px 12px;margin-right:10px;border:1px solid var(--edge);border-radius:6px;background:var(--panel);color:var(--text);cursor:pointer}
.flag-panels>section{min-width:0}.flag-control,.flag-name{font:inherit;min-height:44px;padding:9px 12px;border:1px solid var(--edge);border-radius:6px;background:var(--input);color:var(--text);max-width:100%}.flag-control:focus-visible,.flag-name:focus-visible,.flag-table-wrapper:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--focus);outline-offset:3px}.flag-value{display:block;width:100%;font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.flag-width{margin:16px 0}.flag-result{margin:12px 0 20px}.flag-result>div{display:grid;grid-template-columns:70px minmax(0,1fr);gap:12px;margin:8px 0}.flag-result dt{color:var(--muted);font-size:14px}.flag-result dd{margin:0;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere}.flag-list{max-height:230px;overflow:auto;padding-left:22px;margin:12px 0;overflow-wrap:anywhere;white-space:pre-wrap}.flag-config-controls{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:16px 0}.flag-config-controls label{display:block;margin-bottom:6px}.flag-config-controls input{display:block;width:100%;min-width:0}.flag-config-controls>div{min-width:0}.flag-config-controls input[type=file]{font-size:14px}.flag-bulk{margin:20px 0;padding:16px;border:1px solid var(--border);border-radius:8px;background:var(--input)}.flag-bulk summary{cursor:pointer;font-weight:600;min-height:44px;display:list-item}.flag-bulk[open] summary{margin-bottom:12px}.flag-paste-controls{margin:12px 0}.flag-paste-controls #startBit{width:90px}.flag-bulk textarea{min-height:130px;margin-top:6px}.flag-preview{max-height:220px;overflow:auto;white-space:pre-wrap;overflow-wrap:anywhere;font:14px/1.6 ui-monospace,SFMono-Regular,Consolas,monospace}.flag-table-heading{margin-top:24px}.flag-table-heading .input-help{margin:0}.flag-table-wrapper{max-height:540px;overflow:auto;border:1px solid var(--edge);border-radius:8px;background:var(--input)}.flag-table{border-collapse:separate;border-spacing:0;width:100%;font-size:14px}.flag-table th{position:sticky;top:0;background:var(--soft);z-index:1;text-align:left}.flag-table td,.flag-table th{padding:8px 12px;border-bottom:1px solid var(--border);white-space:nowrap}.flag-table td:nth-child(3),.flag-table td:nth-child(4){font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.flag-table td:last-child{width:100%}.flag-table input[type=checkbox]{width:22px;height:22px;accent-color:var(--accent);vertical-align:middle}.flag-table .flag-name{width:100%;min-width:210px}.flag-table .flag-enabled{background:var(--soft)}#emptyTable{padding:16px}
@media(max-width:700px){.flag-config-controls{grid-template-columns:1fr}.flag-name{font-size:16px}.flag-table td,.flag-table th{padding:8px}.flag-paste-controls{align-items:flex-start}.flag-result>div{grid-template-columns:60px minmax(0,1fr)}}
.flag-table textarea.flag-name{min-height:44px;padding:9px 12px;font-family:inherit;white-space:pre-wrap;resize:vertical;max-height:160px}
.flag-status{display:flex;align-items:flex-start;gap:12px;padding:14px 16px;border:1px solid var(--border);border-left:4px solid var(--edge);border-radius:8px;background:var(--input);color:var(--text);font-size:14px;overflow-wrap:anywhere}.flag-status-icon{flex:0 0 24px;margin-top:1px;color:var(--accent)}.flag-status[data-kind=success]{background:var(--soft);border-color:var(--edge);border-left-color:var(--accent)}.flag-status[data-kind=error]{background:var(--removed);color:var(--removed-text);border-color:var(--removed-text)}.flag-status[data-kind=error] .flag-status-icon{color:var(--removed-text)}.flag-status[data-kind=info] .flag-status-icon{color:var(--muted)}