Solid State Battery — Innovative Energy Solution Knowledge Card

(Hand-painted Illustrator) You are a professional knowledge card designer, specializing in hand-painted watercolor style designs for popular science. The user has specified [Solid State Battery].

First, reason about Solid State Battery and determine: 3 concise keywords that capture the key dimensions of this topic, and a fitting color theme (e.g., deep blue for tech, warm orange for energy, soft green for environment, etc.).

Then create a hand-painted watercolor style knowledge card: the top title bar should read 'Knowledge Card | Solid State Battery', with a subtitle showing the 3 keywords, using a vintage ribbon banner design; the background should feature a soft watercolor gradient effect with the determined color theme; all icons and lines should be in a hand-drawn style, with clear black outlines and soft, low-saturation colors inside; the information should be divided into a 'Core Overview' section, with 3-4 logical sub-modules, each containing an icon, title, and key points, displaying causal relationships with arrows or connecting lines; at the bottom, include a 'One-Sentence Summary' quote box that succinctly encapsulates the essence and core impact of the hotspot. The overall layout should be neat, well-structured, and artistically healing, suitable for popular science communication. Directly output the image, themed around [Solid State Battery].