Title: Tidal Hours
Exact creative prompt: Create a self-contained responsive HTML coastal observatory called Tidal Hours. Use a deep Atlantic blue background, enormous pale serif typography, mint tidal curve and transparent water shading. A horizontal time slider must move a vertical observation marker and update illustrative height, time and rising/falling state. Include a reset-to-noon control, coordinates, a navigation disclaimer and restrained monospace labels. All assets, styles and scripts must be inline and work offline.
Description: A contemplative tide almanac that treats a daily ocean cycle as an elegant scientific field note. Generous negative space and an oversized editorial heading balance the thin luminous curve.
Major visual techniques: Fluid serif typography; SVG gradient-filled curve; hairline rules; marine palette; monospace metadata; responsive spacing.
Interaction model: Drag the labelled time slider to inspect the simulated tide; use NOW to return to the noon reference.