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h2{color:var(--accent);font-family:Orbitron,sans-serif;font-size:2.2rem;font-weight:700;margin-bottom:30px;text-align:center}.timeline-simple{align-items:center;border-left:2px solid var(--border);display:flex;flex-direction:column;gap:30px;margin:0 auto;max-width:800px;padding-left:20px;position:relative}.timeline-entry{-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#ffffff0d;border:1px solid var(--border);border-radius:10px;max-width:600px;padding:16px;position:relative;width:100%}.timeline-entry:before{background:var(--accent);border:2px solid var(--background);border-radius:50%;content:"";height:12px;left:-9px;position:absolute;top:20px;width:12px}.timeline-year{color:var(--text);font-size:1.2rem;font-weight:600;margin-bottom:6px}.timeline-desc{color:var(--text-secondary);font-size:.95rem}.contact-grid{grid-gap:20px;display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin:0 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var(--border);border-radius:10px;color:var(--text)}.edit-btn,.logout{-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);cursor:pointer;font-weight:500;padding:12px 20px;transition:all .3s ease;width:200px}.logout{background:#78000099;border:1px solid #b4000099;border-radius:10px;color:#fdd}.logout:hover{background:#b40000b3;border-color:#f44;color:#fff}.edit-btn:hover{background:#ffffff12;color:var(--accent)}.dataset-history{margin-top:40px}.toggle-history{background:#0000;border:1px solid var(--border);border-radius:6px;color:var(--text);cursor:pointer;font-size:14px;margin-bottom:20px;padding:10px 16px}.history-cards{gap:12px}.history-card,.history-cards{display:flex;flex-direction:column}.history-card{background:#ffffff08;border-radius:10px;gap:6px;padding:12px}.mini-graph{background:#ffffff05;border-radius:6px}.learning-progress{margin-top:40px}.learning-progress 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