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12px}.tool-desc{font-size:16px;color:#666;margin:0}.tool-instructions{margin-top:48px;padding:32px;background:#f9f9fb;border-radius:16px}.tool-instructions h2{font-size:20px;font-weight:600;color:#1a1a2e;margin:0 0 16px}.tool-instructions h3{font-size:16px;font-weight:600;color:#1a1a2e;margin:24px 0 12px}.tool-instructions ol,.tool-instructions ul{margin:0;padding-left:24px}.tool-instructions li{font-size:14px;color:#666;line-height:1.8;margin-bottom:8px}.tool-instructions strong{color:#333}.result-preview.checkerboard{background:repeating-conic-gradient(#f0f0f0 0% 25%,#fff 0% 50%) 50% / 16px 16px}@media(max-width:768px){.app{padding:40px 20px}.logo{font-size:36px}.logo-icon{width:44px;height:44px;line-height:44px;font-size:28px}.tool-selector{flex-direction:column}.options{flex-direction:column;gap:20px}.drop-zone{padding:40px 20px}.drop-icon{font-size:48px}.cutout-toolbar{flex-direction:column;gap:12px;text-align:center}.cutout-preview-area,.bg-selection-area,.export-area{grid-template-columns:1fr}.bg-grid{grid-template-columns:repeat(3,1fr)}.size-presets{flex-direction:column}.size-presets button{width:100%}.tools-grid{grid-template-columns:1fr}.features-grid{grid-template-columns:repeat(2,1fr)}.hero h1{font-size:28px}.tool-nav{flex-direction:column;max-width:100%}.tool-nav a{text-align:center}.footer-links{flex-direction:column;gap:12px;align-items:center}.tool-header h1{font-size:24px}.tool-instructions{padding:20px}}