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20px}.tool-card{padding:20px;border-radius:var(--radius-lg)}.tool-grid{grid-template-columns:1fr;gap:24px}.tool-side-sticky{position:static}.hero{padding:60px 0 32px}.seo-section{padding:56px 0}.seo-section h2{font-size:28px}.seo-section h3{font-size:18px}.seo-section li,.seo-section p{font-size:15px}.steps-list{grid-template-columns:1fr}.preview-stage{min-height:200px}.preview-stage canvas{max-height:260px}.diff-row{grid-template-columns:80px 1fr}}@media (max-width:480px){.container{padding:0 16px}.upload-zone{padding:40px 16px;min-height:220px}.result-stats{grid-template-columns:1fr}.stats-bar{grid-template-columns:1fr 1fr 1fr}.stat-value{font-size:13px}.seo-section{padding:48px 0}.seo-section h2{font-size:24px}.seo-section h3{font-size:17px}.faq-q{font-size:15px;padding:18px 0}.preset-btn{min-width:80px}.btn-actions-row{flex-direction:column}.diff-row{grid-template-columns:1fr;gap:4px}.diff-row .key{padding-top:0}}