{
    "id": "TEST_OCEANIC", "name": "Deep Blue", "body_type": "planet",
    "planet_class": "oceanic", "body_scale": "planet", "seed": 55512,
    "star": {"type": "G", "luminosity_solar": 1.0, "color_temp_K": 5800},
    "orbit": {"distance_au": 0.95, "period_days": 338, "axial_tilt_deg": 20.0},
    "physical": {"gravity_g": 0.88, "oblateness": 0.003, "atmosphere": "standard", "atmosphere_color": [0.4, 0.6, 1.0]},
    "terrain": {"land_fraction": 0.12, "polar_ice_lat": 0.75, "tectonics": "active", "max_elevation_km": 6.0},
    "environment": {"geothermal_flux": "moderate", "uv_index": "moderate", "substrate": "silicate", "chemosynthetic": false, "hydrosphere": "ocean"},
    "clouds": {"enabled": true, "coverage_base": 0.60},
    "render": {"globe_light_angle_deg": 125, "specular_ocean": true, "night_side_ambient": 0.025}
}