:root{--bg-color: #0f172a;--text-main: #cbd5e1;--text-heading: #f8fafc;--accent: #38bdf8;--card-bg: #1e293b;--border: #334155}body{margin:0;font-family:'Inter', sans-serif;background-color:var(--bg-color);color:var(--text-main);line-height:1.7}.container{max-width:760px;margin:0 auto;padding:50px 20px}.hero{text-align:center;margin-bottom:50px;border-bottom:1px solid var(--border);padding-bottom:40px}.hero h1{color:var(--text-heading);font-size:2.5rem;margin-bottom:10px;letter-spacing:-0.5px}.subtitle{font-size:1.1rem;color:#94a3b8;margin-bottom:25px}.btn-group{display:flex;justify-content:center;gap:15px;flex-wrap:wrap}.btn{background-color:transparent;color:var(--text-heading);border:1px solid var(--border);padding:10px 20px;border-radius:6px;text-decoration:none;font-size:0.95rem;font-weight:600;transition:all 0.2s ease-in-out}.btn:hover{border-color:var(--accent);color:var(--accent);background-color:rgba(56,189,248,0.05)}h2{color:var(--text-heading);margin-top:45px;margin-bottom:20px;font-size:1.5rem;display:flex;align-items:center;gap:10px}strong{color:var(--text-heading)}ul{padding-left:20px}li{margin-bottom:8px}.project-card{background-color:var(--card-bg);border:1px solid var(--border);padding:25px;border-radius:10px;margin-bottom:20px;transition:transform 0.2s ease}.project-card:hover{transform:translateY(-2px);border-color:#475569}.project-card h3{margin-top:0;color:var(--accent);margin-bottom:10px;font-size:1.2rem}.project-card p{margin-bottom:0;font-size:0.95rem}.card-link{display:inline-block;margin-top:15px;font-size:0.9rem;font-weight:600;color:var(--accent);text-decoration:none;transition:color 0.2s ease}.card-link:hover{color:#7dd3fc;text-decoration:underline}pre{background-color:#0d1117;border:1px solid var(--border);border-radius:8px;padding:15px;overflow-x:auto;font-size:0.9rem;line-height:1.5;margin-top:15px;margin-bottom:15px}code{font-family:'Courier New', Courier, monospace;background-color:#1e293b;padding:2px 6px;border-radius:4px;color:#38bdf8}pre code{background-color:transparent;padding:0;color:#e2e8f0}.back-link-container{margin-top:50px;padding-top:30px;border-top:1px solid var(--border);text-align:left}.btn-back{display:inline-block;padding:8px 16px;color:var(--text-main);text-decoration:none;border:1px solid var(--border);border-radius:6px;font-size:0.9rem;transition:all 0.2s ease}.btn-back:hover{background-color:var(--card-bg);color:var(--text-heading);border-color:#475569}.cert-grid{display:grid;grid-template-columns:repeat(auto-fit, minmax(320px, 1fr));gap:20px;margin-top:20px;margin-bottom:40px}.cert-card{background-color:var(--card-bg);border:1px solid var(--border);padding:20px;border-radius:8px;transition:transform 0.2s ease, border-color 0.2s ease}.cert-card:hover{transform:translateY(-2px);border-color:#475569}.cert-title{color:var(--text-heading);font-weight:600;font-size:1.1rem;margin-bottom:5px;display:block}.cert-issuer{color:var(--accent);font-size:0.9rem;font-weight:600;margin-bottom:10px;display:block}.cert-desc{font-size:0.9rem;color:#94a3b8;margin-bottom:0}.thm-link{color:#111827;background-color:#00ff00;padding:5px 10px;border-radius:4px;font-weight:800;text-decoration:none;font-size:0.85rem;display:inline-block;margin-top:10px;transition:opacity 0.2s}.thm-link:hover{opacity:0.8}