:root{--bg:#fbfcfe;--fg:#172b43;--muted:#5e6b7a;--line:#dce2e9;--panel:#f0f4f8;--accent:#a87b35;--navy:#13263e;--white:#fff}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 Arial,sans-serif}body.dark{--bg:#111c2b;--fg:#e9eef5;--muted:#acb9ca;--line:#334255;--panel:#1a293b;--white:#1a293b}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}button,input,select{font:inherit}button,a,input,select{outline-offset:5px}button{cursor:pointer}header{max-width:1320px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:25px 5%;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:13px;font:36px Georgia,serif;color:var(--fg)}.brand>span{font:12px/1.6 Arial,sans-serif;letter-spacing:2px;font-weight:bold}.brand 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/* Academic editorial refinement */
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/* Dados de contacto fornecidos no cartão institucional. */
.contact-details {display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin:32px 0;text-align:left;}
.contact-details div {min-width:0;}
.contact-details dt {font-size:.8rem;font-weight:700;letter-spacing:.04em;margin-bottom:8px;opacity:.75;}
.contact-details dd {margin:0;line-height:1.6;overflow-wrap:anywhere;}
.contact-details a {color:inherit;text-decoration:underline;text-underline-offset:4px;}
@media(max-width:600px){.contact-details{grid-template-columns:1fr;gap:20px;}}

.linkedin-link {display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border:1px solid currentColor;border-radius:8px;color:inherit;transition:transform .15s ease,background .15s ease;}
.linkedin-link:hover {transform:translateY(-2px);background:rgba(255,255,255,.12);}
.linkedin-link:focus-visible {outline:3px solid currentColor;outline-offset:4px;}

/* Ligações sociais discretas, em harmonia com o contacto académico. */
.social-links{display:flex;gap:10px;align-items:center;}
.contact .social-button{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;padding:0;border:1px solid rgba(255,255,255,.35);border-radius:50%;background:transparent;color:#e7edf5;text-decoration:none;transition:background .15s ease,border-color .15s ease;}
.social-button svg{display:block;flex-shrink:0;width:22px;height:22px;}
.contact .social-button:hover{background:rgba(255,255,255,.08);border-color:#c9b38c;color:#fff;}
.social-button:focus-visible{outline:2px solid #c9b38c;outline-offset:4px;}