:root{color-scheme:light;--bg: #f7f5f2;--surface: #ffffff;--line: #e2ddd6;--ink: #1a1a1a;--muted: #6b6660;--accent: #1a1a1a}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--ink);font:15px/1.5 system-ui,-apple-system,Segoe UI,sans-serif}.layout{height:100%;display:grid;grid-template-columns:minmax(0,1fr) 380px}@media (max-width: 900px){.layout{grid-template-columns:1fr;grid-template-rows:45vh minmax(0,1fr)}}.stage{position:relative;background:#f2f0ed}.stage iframe{width:100%;height:100%;border:0;display:block}.stage__busy,.stage__error{position:absolute;left:16px;bottom:16px;padding:6px 12px;border-radius:999px;font-size:13px;background:#ffffffeb;box-shadow:0 1px 3px #0000001f}.stage__error{color:#b4341f;max-width:60%}.sidebar{display:flex;flex-direction:column;min-height:0;background:var(--surface);border-left:1px solid var(--line)}@media (max-width: 900px){.sidebar{border-left:0;border-top:1px solid 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