[
  {
    "key": "scifi-clean:default-master",
    "title": "Sci-Fi Clean Default Master",
    "page_templates": ["default", "article", "full-width"],
    "blocks": [
      { "block_key": "navbar", "title": "Mission Header", "content": { "menuName": "main" }, "slot": "header", "sort_order": 0 },
      { "block_key": "scifi-clean:status_bar", "title": "System Status Rail", "content": { "showClock": true, "showBuild": true, "callsign": "SCF-CLN" }, "slot": "header", "sort_order": 10 },
      { "block_key": "slot", "title": "Main Content", "content": { "slotName": "main", "placeholder": "Page payload" }, "slot": "main", "sort_order": 0 },
      { "block_key": "scifi-clean:footer", "title": "Instrument Footer", "content": { "showSignup": true, "callsign": "SCF-CLN" }, "slot": "footer", "sort_order": 0 }
    ]
  },
  {
    "key": "scifi-clean:landing-master",
    "title": "Sci-Fi Clean Landing Master",
    "page_templates": ["landing"],
    "blocks": [
      { "block_key": "scifi-clean:status_bar", "title": "System Status Rail", "content": { "showClock": true, "showBuild": true, "callsign": "SCF-CLN" }, "slot": "header", "sort_order": 0 },
      { "block_key": "scifi-clean:mission_stat", "title": "Hero Mission Stat", "content": { "metric": "Apogee", "value": "412", "unit": "km", "delta": "+12", "trend": "up" }, "slot": "hero", "sort_order": 0 },
      { "block_key": "scifi-clean:tech_spec", "title": "Hero Tech Spec", "content": { "caption": "Launch envelope", "rows": [ { "label": "Thrust", "value": "1.42", "unit": "MN" }, { "label": "Burn time", "value": "186", "unit": "s" }, { "label": "Payload", "value": "320", "unit": "kg" } ] }, "slot": "specs", "sort_order": 0 },
      { "block_key": "slot", "title": "Main Content", "content": { "slotName": "main", "placeholder": "Page payload" }, "slot": "main", "sort_order": 0 },
      { "block_key": "scifi-clean:footer", "title": "Instrument Footer", "content": { "showSignup": true, "callsign": "SCF-CLN" }, "slot": "footer", "sort_order": 0 }
    ]
  }
]