/* Évolution visuelle : cyan, vert acide et profondeur. */
:root{--cyan:#00E5FF;--lime:#C6FF00;--ombre:0 6px 12px #0f172005,0 20px 45px #0f172010;--ombre-haute:0 12px 20px #0f17200b,0 28px 55px #0f172021}
body{background:#EEF2F5;background-image:radial-gradient(ellipse at 90% 280px,#00e5ff0a,transparent 650px)}
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.case-tabs button{min-height:44px}.mobile-nav summary{min-height:44px}