Serve HTML5 styles as static asset

services/api-server/src/api_server/html5.py

@@ -77,7 +77,7 @@ def _page(title: str, body: str) -> str:
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1" />
   <title>{escape(title)}</title>
-  <style>{_css()}</style>
+  <link rel="stylesheet" href="/html5/assets/html5.css" />
   <script defer src="/html5/assets/htmx.min.js"></script>
   <script defer src="/html5/assets/htmx-ext-sse.js"></script>
 </head>
@@ -140,19 +140,3 @@ def _enum_text(value: object) -> str:
 
 def _metric(label: str, value: object) -> str:
     return f"<div><dt>{escape(label)}</dt><dd>{escape(str(value))}</dd></div>"
-
-
-def _css() -> str:
-    return """
-:root{color-scheme:light;--bg:#f7f8fb;--card:#fff;--text:#17202a;--muted:#687385;--line:#dce2ea;--brand:#2457d6;--ok:#168457;--warn:#a16207}
-*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.45 system-ui,-apple-system,Segoe UI,sans-serif}a{color:inherit}
-.shell{min-height:100vh;padding:32px}.hero{display:flex;justify-content:space-between;gap:24px;align-items:end;margin:0 auto 24px;max-width:1180px}.hero h1{margin:0;font-size:36px;letter-spacing:0}.lead{max-width:640px;color:var(--muted);font-size:16px}.eyebrow{margin:0 0 8px;color:var(--brand);font-size:12px;font-weight:800;text-transform:uppercase}.hero-metrics{min-width:160px;border:1px solid var(--line);background:var(--card);padding:18px}.hero-metrics strong{display:block;font-size:34px}.hero-metrics span,.muted{color:var(--muted)}.toolbar-links{display:flex;gap:8px;flex-wrap:wrap}
-.band,.panel,.editor{border:1px solid var(--line);background:var(--card)}.band{max-width:1180px;margin:auto;padding:18px}.section-title,.topbar,.editor-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.button,button{display:inline-flex;align-items:center;justify-content:center;height:32px;border:1px solid var(--line);background:#fff;padding:0 12px;text-decoration:none;font-weight:700;cursor:pointer}table{width:100%;border-collapse:collapse}th,td{border-top:1px solid var(--line);padding:12px;text-align:left}td small{display:block;color:var(--muted)}td .button,td form{margin-right:6px}.delete-project{display:inline-flex;gap:4px;vertical-align:middle}.delete-project input{height:32px;width:120px;border:1px solid var(--line);padding:0 6px}
-.workspace{min-height:100vh;padding-bottom:34px}.topbar{position:sticky;top:0;z-index:2;height:54px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.94);padding:0 14px}.brand{font-weight:900;text-decoration:none;color:var(--brand)}.project-nav{display:flex;gap:6px;overflow:auto;flex:1}.project-link{white-space:nowrap;text-decoration:none;border:1px solid var(--line);padding:6px 10px;background:#fff}.project-link.active{background:var(--brand);border-color:var(--brand);color:#fff}
-.layout{display:grid;grid-template-columns:280px minmax(0,1fr)320px;height:calc(100vh - 88px)}.panel{overflow:auto}.panel-title{padding:12px;border-bottom:1px solid var(--line);font-size:12px;font-weight:900;text-transform:uppercase;color:var(--muted)}.tree-item{display:block;padding:10px 12px;border-bottom:1px solid var(--line);text-decoration:none}.tree-item span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tree-item small{color:var(--muted)}
-.editor{min-width:0;overflow:hidden;border-top:0;border-bottom:0}.editor-head{height:72px;border-bottom:1px solid var(--line);padding:0 14px}.editor-head h1{margin:0;font-size:18px}.search{display:flex;gap:6px}.search input{height:32px;width:260px;border:1px solid var(--line);padding:0 10px}.source-panel{height:calc(100% - 72px);display:grid;grid-template-rows:auto auto minmax(0,1fr);overflow:hidden}.source-head{display:flex;justify-content:space-between;gap:12px;align-items:center;min-height:54px;padding:10px 14px;border-bottom:1px solid var(--line);background:#fff}.source-head strong,.source-head small{display:block}.source-head small{color:var(--muted)}.source-head dl{display:flex;gap:12px;margin:0}.source-head div div{padding:0}.source-head dt{font-size:11px;color:var(--muted)}.source-head dd{margin:0;font-weight:800}.source-summary{margin:0;padding:8px 14px;border-bottom:1px solid var(--line);background:#fffdf8;color:var(--muted);font-size:12px;font-weight:800}.code{height:100%;margin:0;overflow:auto;padding:16px;background:#fbfaf7;font:13px/1.55 ui-monospace,SFMono-Regular,Consolas,monospace;white-space:pre-wrap}
-.metrics{display:grid;grid-template-columns:1fr 1fr;margin:0}.metrics div{padding:12px;border-bottom:1px solid var(--line)}.metrics dt{color:var(--muted);font-size:12px}.metrics dd{margin:2px 0 0;font-size:22px;font-weight:800}.compact{list-style:none;margin:0;padding:0}.compact li{display:flex;justify-content:space-between;padding:8px 12px;border-bottom:1px solid var(--line)}.object-actions{display:flex;gap:6px;flex-wrap:wrap;padding:10px 12px;border-bottom:1px solid var(--line);background:#fbfcfe}.object-actions .button{height:28px;padding:0 9px;font-size:12px}.object-actions .button[data-html5-object-action-active="true"],.object-actions .button[aria-current="page"]{background:var(--brand);border-color:var(--brand);color:#fff}.object-breadcrumb{display:flex;gap:6px;flex-wrap:wrap;padding:9px 12px;border-bottom:1px solid var(--line);background:#fff;font-size:12px;font-weight:800;color:var(--muted)}.object-breadcrumb span:not(:last-child)::after{content:"/";margin-left:6px;color:#98a2b3}.object-breadcrumb span:last-child{color:var(--ink)}.object-summary,.symbol-summary,.review-summary,.project-summary,.object-report-summary,.authoring-summary{margin:0;padding:10px 12px;border-bottom:1px solid var(--line);background:#f8fbff;color:var(--muted);font-size:12px;font-weight:800;line-height:1.45}.symbol{display:grid;gap:3px;padding:10px 12px;border-bottom:1px solid var(--line);cursor:pointer}.symbol:hover{background:#f8fbff}.symbol span,.symbol small{color:var(--muted)}.symbol-focus,.symbol-reference,.object-focus,.object-context-item{display:grid;gap:3px;padding:10px 12px;border-bottom:1px solid var(--line)}.symbol-focus small,.symbol-reference span,.symbol-reference small,.object-focus span,.object-context-item small{color:var(--muted)}.inline-actions{display:flex;gap:8px;flex-wrap:wrap;font-size:12px;font-weight:800}.inline-actions a{color:var(--brand);text-decoration:none}.report-grid{display:grid;grid-template-columns:1fr 1fr;margin:0}.report-grid div{padding:10px 12px;border-bottom:1px solid var(--line)}.report-grid dt{color:var(--muted);font-size:12px}.report-grid dd{margin:2px 0 0;font-size:20px;font-weight:900}.review-item,.authoring-change{display:grid;gap:3px;padding:10px 12px;border-bottom:1px solid var(--line)}.authoring-change[hx-get]{cursor:pointer}.authoring-change[hx-get]:hover{background:#f8fbff}.review-item span,.review-item small,.authoring-change span,.authoring-change small{color:var(--muted)}.diff-item{display:grid;grid-template-columns:72px minmax(0,1fr);gap:8px;padding:8px 12px;border-bottom:1px solid var(--line)}.diff-item span{color:var(--muted);font-weight:800}.diff-item code{white-space:pre-wrap;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px}.status{position:fixed;bottom:0;left:0;right:0;display:flex;gap:18px;overflow:auto;height:34px;align-items:center;border-top:1px solid var(--line);background:#fff;padding:0 12px;color:var(--muted);font-size:12px}.empty-state{max-width:720px;margin:80px auto;background:#fff;border:1px solid var(--line);padding:28px}
-.setup-layout{display:grid;grid-template-columns:340px minmax(0,1fr);gap:16px;max-width:1180px;margin:18px auto;padding:0 16px}.setup-workspace{background:#f3f6fb}.setup-card{padding:16px;border-bottom:1px solid var(--line)}.setup-card h1{margin:0;font-size:24px}.setup-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.setup-main{min-height:620px}.settings-form{display:grid;grid-template-columns:2fr 1fr 1fr auto;gap:8px;align-items:end;padding:12px 16px;border-bottom:1px solid var(--line);background:#fff}.settings-form label{display:grid;gap:4px;font-size:12px;font-weight:800;color:var(--muted);text-transform:uppercase}.settings-form input{height:32px;border:1px solid var(--line);padding:0 8px}.saved{float:right;color:var(--ok);font-weight:900}.setup-actions-panel,.ops-filter{display:flex;gap:8px;flex-wrap:wrap;align-items:end;padding:12px 16px;border-bottom:1px solid var(--line);background:#fbfcfe}.ops-filter input{height:32px;min-width:180px;border:1px solid var(--line);padding:0 8px}.inline-form{display:flex;gap:8px;align-items:end}.inline-form label{display:grid;gap:4px;font-size:12px;font-weight:800;color:var(--muted);text-transform:uppercase}.inline-form select{height:32px;min-width:240px;border:1px solid var(--line);background:#fff;padding:0 8px}.rollback-form,.authoring-preview-form{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:12px;border-bottom:1px solid var(--line);background:#fbfcfe}.rollback-form input,.authoring-preview-form input,.authoring-preview-form textarea{min-width:0;border:1px solid var(--line);padding:0 8px}.rollback-form input,.authoring-preview-form input{height:32px}.authoring-preview-form textarea{grid-column:1/-1;min-height:88px;padding:8px;resize:vertical;font:12px/1.45 ui-monospace,SFMono-Regular,Consolas,monospace}.rollback-form button,.authoring-preview-form button{grid-column:1/-1}.setup-summary{display:grid;gap:0}.compact-lead{margin:0;padding:0 16px 16px}.setup-metrics,.ops-summary{display:grid;grid-template-columns:repeat(4,1fr);margin:0;border-top:1px solid var(--line)}.ops-summary{grid-template-columns:repeat(5,1fr);margin:12px 0}.setup-metrics div,.ops-summary div{padding:16px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}.setup-metrics div:last-child,.ops-summary div:last-child{border-right:0}.setup-metrics dt,.ops-summary dt{font-size:12px;color:var(--muted)}.setup-metrics dd,.ops-summary dd{margin:4px 0 0;font-size:28px;font-weight:900}.status-pill{border:1px solid var(--line);padding:6px 10px;background:#eef6f1;color:var(--ok);font-weight:800}.flush{border-top:1px solid var(--line)}.padded{padding:12px 16px;margin:0}.setup-detail,.history-item,.source-card,.check-item{display:grid;gap:3px;padding:12px 16px;border-bottom:1px solid var(--line)}.setup-detail span,.setup-detail small,.history-item span,.history-item small,.source-card span,.source-card small,.check-item span,.check-item small,.check-head span,.check-head small{color:var(--muted)}.source-list,.history-list,.check-list{display:grid}.check-head{display:flex;gap:10px;align-items:center;padding:12px 16px;border-bottom:1px solid var(--line);background:#fff}.job-log{margin:0;padding:0;list-style:none}.job-log li{padding:8px 16px;border-bottom:1px solid var(--line);color:var(--muted);font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px}
-@media(max-width:980px){.layout{grid-template-columns:1fr;height:auto}.tree,.inspector{max-height:320px}.editor{min-height:520px}.hero{display:block}.shell{padding:16px}}
-@media(max-width:980px){.setup-layout{grid-template-columns:1fr}.setup-metrics{grid-template-columns:1fr 1fr}.settings-form{grid-template-columns:1fr}}
-"""

services/api-server/src/api_server/static/html5/html5.css

@@ -0,0 +1,11 @@
+:root{color-scheme:light;--bg:#f7f8fb;--card:#fff;--text:#17202a;--muted:#687385;--line:#dce2ea;--brand:#2457d6;--ok:#168457;--warn:#a16207}
+*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.45 system-ui,-apple-system,Segoe UI,sans-serif}a{color:inherit}
+.shell{min-height:100vh;padding:32px}.hero{display:flex;justify-content:space-between;gap:24px;align-items:end;margin:0 auto 24px;max-width:1180px}.hero h1{margin:0;font-size:36px;letter-spacing:0}.lead{max-width:640px;color:var(--muted);font-size:16px}.eyebrow{margin:0 0 8px;color:var(--brand);font-size:12px;font-weight:800;text-transform:uppercase}.hero-metrics{min-width:160px;border:1px solid var(--line);background:var(--card);padding:18px}.hero-metrics strong{display:block;font-size:34px}.hero-metrics span,.muted{color:var(--muted)}.toolbar-links{display:flex;gap:8px;flex-wrap:wrap}
+.band,.panel,.editor{border:1px solid var(--line);background:var(--card)}.band{max-width:1180px;margin:auto;padding:18px}.section-title,.topbar,.editor-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.button,button{display:inline-flex;align-items:center;justify-content:center;height:32px;border:1px solid var(--line);background:#fff;padding:0 12px;text-decoration:none;font-weight:700;cursor:pointer}table{width:100%;border-collapse:collapse}th,td{border-top:1px solid var(--line);padding:12px;text-align:left}td small{display:block;color:var(--muted)}td .button,td form{margin-right:6px}.delete-project{display:inline-flex;gap:4px;vertical-align:middle}.delete-project input{height:32px;width:120px;border:1px solid var(--line);padding:0 6px}
+.workspace{min-height:100vh;padding-bottom:34px}.topbar{position:sticky;top:0;z-index:2;height:54px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.94);padding:0 14px}.brand{font-weight:900;text-decoration:none;color:var(--brand)}.project-nav{display:flex;gap:6px;overflow:auto;flex:1}.project-link{white-space:nowrap;text-decoration:none;border:1px solid var(--line);padding:6px 10px;background:#fff}.project-link.active{background:var(--brand);border-color:var(--brand);color:#fff}
+.layout{display:grid;grid-template-columns:280px minmax(0,1fr)320px;height:calc(100vh - 88px)}.panel{overflow:auto}.panel-title{padding:12px;border-bottom:1px solid var(--line);font-size:12px;font-weight:900;text-transform:uppercase;color:var(--muted)}.tree-item{display:block;padding:10px 12px;border-bottom:1px solid var(--line);text-decoration:none}.tree-item span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tree-item small{color:var(--muted)}
+.editor{min-width:0;overflow:hidden;border-top:0;border-bottom:0}.editor-head{height:72px;border-bottom:1px solid var(--line);padding:0 14px}.editor-head h1{margin:0;font-size:18px}.search{display:flex;gap:6px}.search input{height:32px;width:260px;border:1px solid var(--line);padding:0 10px}.source-panel{height:calc(100% - 72px);display:grid;grid-template-rows:auto auto minmax(0,1fr);overflow:hidden}.source-head{display:flex;justify-content:space-between;gap:12px;align-items:center;min-height:54px;padding:10px 14px;border-bottom:1px solid var(--line);background:#fff}.source-head strong,.source-head small{display:block}.source-head small{color:var(--muted)}.source-head dl{display:flex;gap:12px;margin:0}.source-head div div{padding:0}.source-head dt{font-size:11px;color:var(--muted)}.source-head dd{margin:0;font-weight:800}.source-summary{margin:0;padding:8px 14px;border-bottom:1px solid var(--line);background:#fffdf8;color:var(--muted);font-size:12px;font-weight:800}.code{height:100%;margin:0;overflow:auto;padding:16px;background:#fbfaf7;font:13px/1.55 ui-monospace,SFMono-Regular,Consolas,monospace;white-space:pre-wrap}
+.metrics{display:grid;grid-template-columns:1fr 1fr;margin:0}.metrics div{padding:12px;border-bottom:1px solid var(--line)}.metrics dt{color:var(--muted);font-size:12px}.metrics dd{margin:2px 0 0;font-size:22px;font-weight:800}.compact{list-style:none;margin:0;padding:0}.compact li{display:flex;justify-content:space-between;padding:8px 12px;border-bottom:1px solid var(--line)}.object-actions{display:flex;gap:6px;flex-wrap:wrap;padding:10px 12px;border-bottom:1px solid var(--line);background:#fbfcfe}.object-actions .button{height:28px;padding:0 9px;font-size:12px}.object-actions .button[data-html5-object-action-active="true"],.object-actions .button[aria-current="page"]{background:var(--brand);border-color:var(--brand);color:#fff}.object-breadcrumb{display:flex;gap:6px;flex-wrap:wrap;padding:9px 12px;border-bottom:1px solid var(--line);background:#fff;font-size:12px;font-weight:800;color:var(--muted)}.object-breadcrumb span:not(:last-child)::after{content:"/";margin-left:6px;color:#98a2b3}.object-breadcrumb span:last-child{color:var(--ink)}.object-summary,.symbol-summary,.review-summary,.project-summary,.object-report-summary,.authoring-summary{margin:0;padding:10px 12px;border-bottom:1px solid var(--line);background:#f8fbff;color:var(--muted);font-size:12px;font-weight:800;line-height:1.45}.symbol{display:grid;gap:3px;padding:10px 12px;border-bottom:1px solid var(--line);cursor:pointer}.symbol:hover{background:#f8fbff}.symbol span,.symbol small{color:var(--muted)}.symbol-focus,.symbol-reference,.object-focus,.object-context-item{display:grid;gap:3px;padding:10px 12px;border-bottom:1px solid var(--line)}.symbol-focus small,.symbol-reference span,.symbol-reference small,.object-focus span,.object-context-item small{color:var(--muted)}.inline-actions{display:flex;gap:8px;flex-wrap:wrap;font-size:12px;font-weight:800}.inline-actions a{color:var(--brand);text-decoration:none}.report-grid{display:grid;grid-template-columns:1fr 1fr;margin:0}.report-grid div{padding:10px 12px;border-bottom:1px solid var(--line)}.report-grid dt{color:var(--muted);font-size:12px}.report-grid dd{margin:2px 0 0;font-size:20px;font-weight:900}.review-item,.authoring-change{display:grid;gap:3px;padding:10px 12px;border-bottom:1px solid var(--line)}.authoring-change[hx-get]{cursor:pointer}.authoring-change[hx-get]:hover{background:#f8fbff}.review-item span,.review-item small,.authoring-change span,.authoring-change small{color:var(--muted)}.diff-item{display:grid;grid-template-columns:72px minmax(0,1fr);gap:8px;padding:8px 12px;border-bottom:1px solid var(--line)}.diff-item span{color:var(--muted);font-weight:800}.diff-item code{white-space:pre-wrap;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px}.status{position:fixed;bottom:0;left:0;right:0;display:flex;gap:18px;overflow:auto;height:34px;align-items:center;border-top:1px solid var(--line);background:#fff;padding:0 12px;color:var(--muted);font-size:12px}.empty-state{max-width:720px;margin:80px auto;background:#fff;border:1px solid var(--line);padding:28px}
+.setup-layout{display:grid;grid-template-columns:340px minmax(0,1fr);gap:16px;max-width:1180px;margin:18px auto;padding:0 16px}.setup-workspace{background:#f3f6fb}.setup-card{padding:16px;border-bottom:1px solid var(--line)}.setup-card h1{margin:0;font-size:24px}.setup-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.setup-main{min-height:620px}.settings-form{display:grid;grid-template-columns:2fr 1fr 1fr auto;gap:8px;align-items:end;padding:12px 16px;border-bottom:1px solid var(--line);background:#fff}.settings-form label{display:grid;gap:4px;font-size:12px;font-weight:800;color:var(--muted);text-transform:uppercase}.settings-form input{height:32px;border:1px solid var(--line);padding:0 8px}.saved{float:right;color:var(--ok);font-weight:900}.setup-actions-panel,.ops-filter{display:flex;gap:8px;flex-wrap:wrap;align-items:end;padding:12px 16px;border-bottom:1px solid var(--line);background:#fbfcfe}.ops-filter input{height:32px;min-width:180px;border:1px solid var(--line);padding:0 8px}.inline-form{display:flex;gap:8px;align-items:end}.inline-form label{display:grid;gap:4px;font-size:12px;font-weight:800;color:var(--muted);text-transform:uppercase}.inline-form select{height:32px;min-width:240px;border:1px solid var(--line);background:#fff;padding:0 8px}.rollback-form,.authoring-preview-form{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:12px;border-bottom:1px solid var(--line);background:#fbfcfe}.rollback-form input,.authoring-preview-form input,.authoring-preview-form textarea{min-width:0;border:1px solid var(--line);padding:0 8px}.rollback-form input,.authoring-preview-form input{height:32px}.authoring-preview-form textarea{grid-column:1/-1;min-height:88px;padding:8px;resize:vertical;font:12px/1.45 ui-monospace,SFMono-Regular,Consolas,monospace}.rollback-form button,.authoring-preview-form button{grid-column:1/-1}.setup-summary{display:grid;gap:0}.compact-lead{margin:0;padding:0 16px 16px}.setup-metrics,.ops-summary{display:grid;grid-template-columns:repeat(4,1fr);margin:0;border-top:1px solid var(--line)}.ops-summary{grid-template-columns:repeat(5,1fr);margin:12px 0}.setup-metrics div,.ops-summary div{padding:16px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}.setup-metrics div:last-child,.ops-summary div:last-child{border-right:0}.setup-metrics dt,.ops-summary dt{font-size:12px;color:var(--muted)}.setup-metrics dd,.ops-summary dd{margin:4px 0 0;font-size:28px;font-weight:900}.status-pill{border:1px solid var(--line);padding:6px 10px;background:#eef6f1;color:var(--ok);font-weight:800}.flush{border-top:1px solid var(--line)}.padded{padding:12px 16px;margin:0}.setup-detail,.history-item,.source-card,.check-item{display:grid;gap:3px;padding:12px 16px;border-bottom:1px solid var(--line)}.setup-detail span,.setup-detail small,.history-item span,.history-item small,.source-card span,.source-card small,.check-item span,.check-item small,.check-head span,.check-head small{color:var(--muted)}.source-list,.history-list,.check-list{display:grid}.check-head{display:flex;gap:10px;align-items:center;padding:12px 16px;border-bottom:1px solid var(--line);background:#fff}.job-log{margin:0;padding:0;list-style:none}.job-log li{padding:8px 16px;border-bottom:1px solid var(--line);color:var(--muted);font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px}
+@media(max-width:980px){.layout{grid-template-columns:1fr;height:auto}.tree,.inspector{max-height:320px}.editor{min-height:520px}.hero{display:block}.shell{padding:16px}}
+@media(max-width:980px){.setup-layout{grid-template-columns:1fr}.setup-metrics{grid-template-columns:1fr 1fr}.settings-form{grid-template-columns:1fr}}

services/api-server/tests/test_api.py

@@ -34,6 +34,8 @@ def assert_html5_contract(text: str, *markers: str, full_page: bool = False) ->
     assert 'hx-trigger="every' not in text
     if full_page:
         assert "<!doctype html>" in text
+        assert "<style>" not in text
+        assert "/html5/assets/html5.css" in text
         assert "/html5/assets/htmx.min.js" in text
         assert "/html5/assets/htmx-ext-sse.js" in text
     else:
@@ -150,14 +152,17 @@ def test_html5_server_rendered_project_editor(tmp_path: Path):
     assert 'hx-swap="outerHTML"' in editor.text
     assert "hx-ext=\"sse\"" in editor.text
     assert f"sse-connect=\"/html5/projects/{project_id}/events\"" in editor.text
+    assert '/html5/assets/html5.css' in editor.text
     assert '/html5/assets/htmx.min.js' in editor.text
     assert '/html5/assets/htmx-ext-sse.js' in editor.text
     assert "unpkg.com" not in editor.text
     assert "client-js: htmx+sse only" in editor.text
-    assert ".object-actions .button[data-html5-object-action-active" in editor.text
+    css = client.get("/html5/assets/html5.css")
-    assert ".inline-actions" in editor.text
+    assert css.status_code == 200
-    assert ".object-breadcrumb" in editor.text
+    assert ".object-actions .button[data-html5-object-action-active" in css.text
-    assert ".object-summary" in editor.text
+    assert ".inline-actions" in css.text
+    assert ".object-breadcrumb" in css.text
+    assert ".object-summary" in css.text
     assert "Проверить" in editor.text
     assert "__next" not in editor.text
 
@@ -257,6 +262,10 @@ def test_html5_server_rendered_project_editor(tmp_path: Path):
     assert sse_asset.status_code == 200
     assert "javascript" in sse_asset.headers["content-type"]
     assert "sse" in sse_asset.text
+    css_asset = client.get("/html5/assets/html5.css")
+    assert css_asset.status_code == 200
+    assert "text/css" in css_asset.headers["content-type"]
+    assert ".workspace" in css_asset.text
 
 
 def test_html5_contracts_are_server_rendered_and_stable(tmp_path: Path):