:root{--blu:#1d1d1f;--accento:#0071e3;--verde:#34c759;--grigio:#f5f5f7;--testo:#1d1d1f;--chiaro:#6e6e73;--bordo:#e5e5ea}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased}body{color:var(--testo);letter-spacing:-.01em;background:#fff;font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,SF Pro Display,Helvetica Neue,Segoe UI,system-ui,sans-serif;line-height:1.5}.topbar{z-index:40;-webkit-backdrop-filter:saturate(180%)blur(20px);color:var(--testo);background:#ffffffd9;border-bottom:1px solid #2e86de24;justify-content:space-between;align-items:center;padding:12px 28px;display:flex;position:sticky;top:0}.logo{align-items:center;text-decoration:none;transition:transform .25s cubic-bezier(.2,.8,.2,1);display:flex}.logo:hover{transform:scale(1.1)}.logo:hover .logo-img{filter:drop-shadow(0 4px 14px #2eb4eb99)}.logo-img{filter:drop-shadow(0 2px 8px #2eb4eb40);width:auto;height:48px;transition:filter .25s;display:block}.logo-ai{color:#fff;background:linear-gradient(135deg,#2e86de,#6aa6ff);border-radius:9px;padding:3px 10px;font-weight:800;box-shadow:0 3px 12px #2e86de59}.nav-links a{color:#3a4a60;margin-left:22px;font-size:.9rem;font-weight:500;text-decoration:none;transition:color .15s}.nav-links a:hover{color:var(--accento)}.nav-links a.esci{opacity:.55}main{max-width:1060px;margin:30px auto;padding:0 22px}.subnav{flex-wrap:wrap;gap:8px;max-width:1060px;margin:0 auto;padding:16px 22px 0;display:flex}.subnav a{color:var(--chiaro);border:1px solid var(--bordo);background:#fff;border-radius:980px;padding:7px 16px;font-size:.85rem;font-weight:600;text-decoration:none;transition:all .15s}.subnav a.active{color:#fff;background:var(--accento);border-color:var(--accento)}.subnav a:hover:not(.active){border-color:var(--accento);color:var(--accento)}.card{background:#fff;border:1px solid #0000000a;border-radius:18px;margin-bottom:20px;padding:26px;box-shadow:0 1px 2px #0000000a,0 8px 24px 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