@import url("../../cosmos/lessons/style.css");

/* ───────────────────────────────────────────────────────────────
   物质为什么会变 / chemistry track
   Reuses the cosmos component sheet verbatim (which itself @imports
   the shared RL base sheet and defines kicker / source-note /
   takeaway / position-grid / lesson-flow / mini-flow / trade-table /
   lesson-grid). No chemistry-specific classes needed.
   ─────────────────────────────────────────────────────────────── */