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a{color:var(--footer-color);text-decoration:underline;text-underline-offset:2px;transition:color .2s ease}#footer a:hover{color:var(--content-heading)}.hidden{display:none!important}@media(max-width:480px){#header{padding:14px 16px 2px}#btn-theme svg{width:18px;height:18px;padding:7px}#header h1{font-size:26px}#brand-icon{width:26px;height:26px}#tagline{font-size:12px}#canvas-area{padding:8px 10px}#signature-canvas{border-radius:8px}#toolbar{padding:4px 8px;padding-bottom:max(10px,env(safe-area-inset-bottom));gap:0}#toolbar button{min-width:38px;min-height:38px;padding:6px 8px;font-size:11px}#toolbar button svg{width:18px;height:18px}#btn-export{padding:6px 10px}#btn-export svg{width:14px;height:14px}#content-inner{padding:32px 16px}#content h2{font-size:24px;margin-bottom:10px}#content>p,#content-inner>p{font-size:15px}#features{gap:10px;margin:24px 0}.feature{padding:16px}.feature h3{font-size:15px}.feature p{font-size:14px}.tip{margin-top:28px;font-size:14px;padding:10px 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