:root{--bg:#f3f6f8;--panel:#fff;--ink:#172a36;--muted:#546570;--accent:#126d65;--line:#d6e0e5;--red:#a62d28}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 system-ui,-apple-system,'Segoe UI',sans-serif}header{background:#143344;color:white;padding:24px max(24px,calc((100vw - 1480px)/2));display:flex;justify-content:space-between;gap:28px}header a{color:#b9e3da}h1{font-size:28px;margin:7px 0}h2{font-size:20px;margin:0 0 12px}p{margin:8px 0 14px}header p{margin:4px 0;font-size:13px}main{max-width:1480px;margin:auto;padding:22px}a{color:var(--accent)}.badge{display:inline-block;background:#e4f2ee;color:#165d56;border-radius:6px;padding:4px 9px;font-size:12px;font-weight:650}.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:22px;margin-bottom:20px;box-shadow:0 2px 6px #172a3605}.context{display:flex;align-items:center;flex-wrap:wrap;gap:18px}.context>div{min-width:280px;flex:1}.context p{flex-basis:100%;margin:0}.muted,small{color:var(--muted);font-size:13px}small{display:block;margin-top:5px}label{display:block;font-size:13px;font-weight:650;margin:13px 0 5px}input,select,textarea{width:100%;font:inherit;padding:9px 10px;border:1px solid #b7c6ce;border-radius:7px;background:white;color:var(--ink)}input:read-only{background:#f1f4f6}textarea{resize:vertical;line-height:1.5}button{font:inherit;font-size:14px;font-weight:650;background:var(--accent);color:white;border:1px solid transparent;border-radius:7px;padding:9px 13px;cursor:pointer}button.secondary{background:#f4f7f8;border-color:var(--line);color:var(--ink)}button.danger{background:white;color:var(--red);border-color:#e6c3c1}button:disabled{opacity:.45;cursor:not-allowed}button.small{font-size:12px;padding:5px 9px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #e1aa36;outline-offset:2px}.actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:16px}.actions>label{margin:0;min-width:230px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}nav{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0}nav button{background:white;border-color:var(--line);color:var(--muted)}nav button.active{background:var(--ink);color:white}table{width:100%;border-collapse:collapse;font-size:13px}th{text-align:left;background:#eef3f6;color:#324d5c;font-size:12px;padding:11px 9px}td{padding:12px 9px;border-bottom:1px solid var(--line);vertical-align:top}td button{margin:3px}td small{font-size:12px}.table-wrap{overflow-x:auto;margin:16px 0}.check{display:flex;align-items:flex-start;gap:9px;font-weight:500}input[type=checkbox]{width:18px;height:18px;flex-shrink:0;margin:3px 0;accent-color:var(--accent)}#message{white-space:pre-wrap;border-radius:8px;overflow-wrap:anywhere}#message:not(:empty){padding:12px 16px;margin:12px 0;background:#e9f5ef;border:1px solid #a9d0bb}#message.error{color:#812620;background:#fff2ef;border-color:#e5beb8}.error{color:var(--red)}.notice{background:#fff3db;color:#735417;padding:4px 7px;border-radius:4px;display:inline-block;font-size:12px}.section-heading{display:flex;gap:18px;justify-content:space-between;align-items:center;flex-wrap:wrap}.editor-layout{display:grid;grid-template-columns:minmax(350px,.95fr) minmax(450px,1.05fr);gap:20px}.preview-card{position:sticky;top:12px;align-self:start}.preview-card iframe{width:100%;height:780px;border:1px solid var(--line);background:#eef1f3}.preview-card p{font-size:13px}details{margin:16px 0}summary{cursor:pointer;font-weight:650;font-size:13px}dialog{width:min(650px,94vw);max-height:90vh;overflow:auto;border:1px solid var(--line);border-radius:12px;padding:28px;box-shadow:0 20px 80px #132f4455}dialog::backdrop{background:#10263588}footer{max-width:1480px;margin:12px auto;padding:20px 24px;color:var(--muted);font-size:12px}[hidden]{display:none!important}.readonly .write{display:none}.busy{cursor:progress}.busy button{pointer-events:none;opacity:.6}tr.selected{background:#f1f9f5}.table-wrap tr:hover{background:#f6f9fb}@media(max-width:1050px){.editor-layout{grid-template-columns:1fr}.preview-card{position:static}.preview-card iframe{height:680px}}@media(max-width:680px){main{padding:12px}header{padding:20px;display:block}header h1{font-size:24px}.grid,.grid.three{grid-template-columns:1fr}.card{padding:16px}.context>div{min-width:100%}.preview-card iframe{height:520px}nav button{flex:1 1 44%}th,td{padding:9px 6px}.editor-layout{display:block}}