TITLE: Senbazuru — Fold a Paper Crane FILE: 027-origami-crane.html === PROMPT (exact prompt used) === Create "Senbazuru — Fold a Paper Crane", an animated, step-by-step origami crane made with CSS 3D transforms or canvas 3D projection. A square of patterned washi paper (generated seigaiha waves or asanoha pattern in indigo #264653 on cream, with a coral #e76f51 reverse side) folds through about eight key stages — square base, bird base, narrowing folds, head fold, wings — with smooth hinge rotations, correct front/back faces and soft directional shading on each facet that changes with its angle. A clean Japanese-minimal layout: off-white #f7f3ec, lots of space, the step number as a large thin numeral, a one-line instruction for each step, and a progress rail of eight dots. Interaction: next/previous buttons, arrow keys and an auto-play toggle; drag to orbit the model; a picker for three washi patterns. Finale: the finished crane flaps gently and floats above a soft shadow while a counter reads "1 of 1000". Typography: an elegant serif plus tiny wide-tracked sans labels. SHARED REQUIREMENTS (apply to every page in this 100-page collection): 1. One standalone HTML5 file. All CSS inline in