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(width<=767px){.app-shell{padding:24px 16px}.app-header h1{font-size:24px}.primary-choice-grid{grid-template-columns:1fr;gap:16px}.choice-card{min-height:auto;padding:20px}.home-auxiliary-tools{flex-direction:column;align-items:flex-start;gap:16px}.utility-menu{flex-direction:column;align-items:stretch;gap:12px;padding:12px}.utility-primary{grid-template-columns:repeat(3,1fr);gap:4px;display:grid}.utility-button{justify-content:center;min-height:38px;padding:6px 8px;font-size:13px}.utility-secondary{border-left:0;border-top:1px solid var(--color-border);justify-content:space-between;padding-top:12px;padding-left:0}.new-post-field-grid{grid-template-columns:1fr}.mvp-property-choices{grid-template-columns:1fr;gap:10px}.sample-picker{grid-template-columns:1fr}.result-metrics-grid{grid-template-columns:repeat(2,1fr);gap:10px}.fact-validation-list,.created-analysis-summary-grid{grid-template-columns:1fr}.created-post-content{padding:20px 16px}.created-title-section h3{font-size:18px}.created-result-actions{flex-direction:column;align-items:stretch}.created-result-actions button{width:100%}.new-post-actions{flex-direction:column;gap:10px;display:flex}.new-post-actions button{width:100%}}