body{font-family:-apple-system,BlinkMacSystemFont,Hiragino Sans,Hiragino Kaku Gothic ProN,Yu Gothic UI,Yu Gothic,Meiryo,system-ui,sans-serif}.tab-btn{transition:background .2s,color .2s,border-color .2s}.tab-btn:hover{background:#ffffff1f!important}.tab-btn:focus-visible{outline-offset:2px;outline:2px solid #cba6f7}.grammar-card{width:100%}.grammar-card:hover{background:var(--card-hover-bg)!important}.card-header:focus-visible{outline-offset:-2px;border-radius:12px;outline:2px solid #cba6f7}.section-divider{background:linear-gradient(90deg,#0000,#ffffff14,#0000);height:1px;margin:10px 0}