@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap");:root{--primary-color:#6366f1;--primary-dark:#4f46e5;--secondary-color:#f59e0b;--text-primary:#1f2937;--text-secondary:#6b7280;--bg-primary:#ffffff;--bg-secondary:#f9fafb;--bg-accent:#f3f4f6;--border-color:#e5e7eb;--shadow-sm:0 1px 2px 0 rgb(0 0 0/0.05);--shadow-md:0 4px 6px -1px rgb(0 0 0/0.1),0 2px 4px -2px rgb(0 0 0/0.1);--shadow-lg:0 10px 15px -3px rgb(0 0 0/0.1),0 4px 6px -4px rgb(0 0 0/0.1)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:Inter,sans-serif;line-height:1.6;color:var(--text-primary);background-color:var(--bg-primary)}h1,h2,h3,h4,h5,h6{font-family:var(--font-poppins),"Poppins",sans-serif;font-weight:600;line-height:1.2}h1{font-size:3rem}h2{font-size:2.5rem}h3{font-size:2rem}h4{font-size:1.5rem}h5{font-size:1.25rem}h6{font-size:1rem}.container{max-width:1200px;margin:0 auto;padding:0 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2rem;text-decoration:none;color:var(--text-primary);font-weight:600;font-size:1.1rem;transition:all .2s ease;border-bottom:1px solid var(--border-color);position:relative}.mobile-nav-link:hover{background-color:var(--bg-accent);color:var(--primary-color);transform:translateX(8px)}.mobile-nav-link:last-child{border-bottom:none}.mobile-nav-link:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary-color);transform:scaleY(0);transition:transform .2s ease}.mobile-nav-link:hover:before{transform:scaleY(1)}.mobile-user-widget{padding:1.5rem 2rem;border-top:2px solid var(--border-color);display:flex;justify-content:center;background:var(--bg-secondary);margin-top:.5rem}.nav-brand{margin-left:0}.nav-brand,.user-widget{display:flex;align-items:center}.user-widget{position:relative}.sign-in-button{background:#1a73e8;color:white;padding:8px 24px;border-radius:4px;text-decoration:none;font-weight:500;font-size:14px;transition:background-color .2s ease;border:none;cursor:pointer}.sign-in-button:hover{background:#1557b0}@media (max-width:768px){.sign-in-button{padding:12px 20px;font-size:16px;font-weight:600;border-radius:8px;min-height:44px;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 4px rgba(26,115,232,.2);transition:all .2s ease}.sign-in-button:hover{background:#1557b0;box-shadow:0 4px 8px rgba(26,115,232,.3);transform:translateY(-1px)}.sign-in-button:active{transform:translateY(0);box-shadow:0 2px 4px rgba(26,115,232,.2)}.user-widget .sign-in-button{margin:0 8px;white-space:nowrap}.nav-logo{font-size:1.25rem!important;display:flex;align-items:center;transition:all .2s ease}.nav-logo:hover{color:var(--primary-dark);transform:scale(1.02)}.nav-logo:active{transform:scale(.98)}.nav-brand{margin-right:12px}.navbar .container{padding:0 .75rem;max-width:100vw;width:100vw;box-sizing:border-box}.nav-content{padding:.75rem 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#dadce0}.mobile-user-dropdown{position:fixed;top:180%;left:50%;transform:translate(-50%,-50%);margin-top:0;min-width:320px;max-width:90vw;border-radius:12px;box-shadow:0 10px 25px rgba(0,0,0,.2);border:none;animation:slideUp .3s ease-out;z-index:1002}@keyframes slideUp{0%{opacity:0;transform:translate(-50%,-30%)}to{opacity:1;transform:translate(-50%,-50%)}}.dropdown-header{padding:16px;display:flex;align-items:center;gap:12px}.dropdown-avatar{width:48px;height:48px;border-radius:50%;background:#1a73e8;color:white;display:flex;align-items:center;justify-content:center;font-weight:500}.user-info{flex:1 1}.user-name{font-weight:500;color:#202124;margin-bottom:4px}.user-email{font-size:14px;color:#5f6368}.dropdown-divider{height:1px;background:#dadce0;margin:8px 0}.dropdown-actions{padding:8px 0}.dropdown-item{display:flex;align-items:center;gap:12px;padding:8px 16px;text-decoration:none;color:#202124;font-size:14px;transition:background-color .2s 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5rem);display:flex;align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);color:white;position:relative;overflow:hidden}.hero:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.1"/><circle cx="10" cy="60" r="0.5" fill="white" opacity="0.1"/><circle cx="90" cy="40" r="0.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');opacity:.3}.hero-content{position:relative;z-index:1;text-align:center;max-width:96rem;margin:0 auto}.hero h1{font-size:4rem;margin-bottom:1rem;animation:fadeInUp 1s ease}.hero p{font-size:1.25rem;margin-bottom:2rem;opacity:.9;animation:fadeInUp 1s ease .2s both}.hero-buttons{display:flex;gap:1rem;justify-content:center;animation:fadeInUp 1s ease .4s both}.btn{display:inline-block;padding:.75rem 2rem;border-radius:.5rem;text-decoration:none;font-weight:500;transition:all .3s ease;border:none;cursor:pointer;font-size:1rem}.btn-primary{background:var(--primary-color);color:white}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-secondary{background:transparent;color:white;border:2px solid white}.btn-secondary:hover{background:white;color:var(--primary-color);transform:translateY(-2px)}.section{padding:5rem 0}.section-title{text-align:center;margin-bottom:3rem}.section-title h2{color:var(--text-primary);margin-bottom:1rem}.section-title p{color:var(--text-secondary);font-size:1.125rem}.about{background:var(--bg-secondary);padding:4rem 0;flex:1 1}.about,.about-content{display:flex;align-items:center}.about-content{flex-direction:column;text-align:left;max-width:800px;margin:0 auto;width:100%}.about-text h3{margin-bottom:2rem;color:var(--primary-color);font-size:2.2rem;font-weight:700;text-align:center}.about-text p{margin-bottom:1.75rem;color:var(--text-primary);line-height:1.8;font-size:1.1rem;text-align:justify}.about-text p:last-child{margin-bottom:0}.about-text{color:#4a5568;font-weight:500}.skills{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:2rem}.skill-tag{background:var(--primary-color);color:white;padding:.5rem 1rem;border-radius:2rem;font-size:.875rem;font-weight:500}.about-image{text-align:center}.about-image img{width:300px;height:300px;border-radius:50%;object-fit:cover;box-shadow:var(--shadow-lg)}.projects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));grid-gap:2rem;gap:2rem;margin-top:3rem}.project-card{background:white;border-radius:1rem;overflow:hidden;box-shadow:var(--shadow-md);transition:all .3s ease}.project-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}.project-image{width:100%;height:200px;background:linear-gradient(45deg,var(--primary-color),var(--secondary-color));display:flex;align-items:center;justify-content:center;color:white;font-size:2rem}.project-content{padding:1.5rem}.project-content h3{margin-bottom:.5rem;color:var(--text-primary)}.project-content p{color:var(--text-secondary);margin-bottom:1rem}.project-tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1rem}.project-tag{background:var(--bg-accent);color:var(--text-secondary);padding:.25rem 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solid var(--border-color);border-radius:.5rem;font-size:1rem;transition:border-color .3s ease}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--primary-color)}.form-group textarea{resize:vertical;min-height:120px}.page-layout{display:flex;flex-direction:column;min-height:100vh}.main-content{flex:1 1;display:flex;flex-direction:column}.footer{background:var(--text-primary);color:white;text-align:center;margin-top:auto}.social-links{display:flex;justify-content:center;gap:1rem;margin-bottom:1rem}.social-links a{color:white;font-size:1.5rem;transition:color .3s ease}.social-links a:hover{color:var(--primary-color)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.article-container{max-width:1200px;margin:0 auto;padding:6rem 2rem 2rem;line-height:1.7;font-family:Georgia,Times New Roman,serif;color:#2d3748;display:grid;grid-template-columns:[screen-start] 1fr [page-start kicker-start middle-start text-start] 700px [text-end middle-end kicker-end page-end] 1fr [screen-end];grid-column-gap:16px}.base-grid{grid-column:screen}.visual-toc{counter-reset:toc-heading 0;display:grid;grid-template-columns:repeat(3,1fr);grid-gap:24px;gap:24px;max-width:1200px;margin:4rem auto;grid-column:screen;width:100%}.visual-toc-item{display:flex;flex-flow:column}.visual-toc-top{flex-grow:1;border:1px solid rgba(0,0,0,.1);border-radius:8px;padding:0;text-decoration:none;color:inherit;transition:all .3s ease;display:flex;flex-direction:column;height:100%;min-height:240px;background:#ffffff;box-shadow:0 2px 8px rgba(0,0,0,.08);overflow:hidden}.visual-toc-top:hover{box-shadow:0 4px 16px rgba(0,0,0,.12);transform:translateY(-4px);border-color:rgba(0,0,0,.15)}.visual-toc .toc-head,.visual-toc .toc-subhead{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;padding:1.5rem;flex-grow:1;min-height:100px;background:#ffffff}.visual-toc .toc-head{counter-increment:toc-heading 1;color:#1a202c;font-weight:500;font-size:1.1rem;line-height:1.3;font-family:Georgia,Times New Roman,serif}.visual-toc .toc-head:before{content:"SECTION " counter(toc-heading,decimal);font-size:.75rem;color:#6b7280;font-weight:400;text-transform:uppercase;letter-spacing:.05em;margin-bottom:.75rem;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif}.visual-toc figure{margin:0}.visual-toc figure.gdoc-image{max-width:none;padding-right:0}.visual-toc-top img{width:100%;height:140px;object-fit:cover;border-bottom:1px solid rgba(0,0,0,.08)}.visual-toc a{display:block;text-decoration:none;cursor:pointer}.d-byline-container{grid-column:screen;margin:2rem 0}.d-byline{grid-column:text;display:grid;grid-template-columns:[authors] 1fr [affiliations] 1fr [published] 1fr [info] 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p:last-child{color:#4a5568;font-size:.95rem;font-style:italic}.article-meta{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));grid-gap:1rem;gap:1rem;margin-top:2rem}.meta-item{color:#6b7280;font-size:.9rem}.meta-item strong{color:#374151;font-weight:600}.article-content{color:#2d3748;font-size:1.1rem;line-height:1.8;font-family:Georgia,Times New Roman,serif;margin-top:2rem}.article-content,.article-content>*{grid-column:screen;width:100%}.article-content section{margin-bottom:4rem;padding-bottom:2rem;border-bottom:1px solid #e5e7eb}.article-content section:last-child{border-bottom:none}.article-content .abstract{background:#f7fafc;padding:2rem;margin:2rem 0;border:1px solid #e2e8f0;border-bottom-color:#e5e7eb}.article-content .abstract h2{color:#2d3748;font-size:1.4rem;margin-bottom:1rem;font-weight:500;border:none;padding:0;font-family:Georgia,Times New Roman,serif}.article-content .abstract p{font-style:italic;color:#4a5568;line-height:1.7;margin-bottom:0}.article-content .introduction{margin-top:3rem}.article-content .introduction h2{margin:0 0 2rem}.article-content .introduction h2,.article-content h2{color:#1a202c;font-size:2.2rem;padding-top:2rem;border-top:1px solid #2d3748;font-weight:400;letter-spacing:-.01em;font-family:Georgia,Times New Roman,serif}.article-content h2{margin:4rem 0 2rem}.article-content h3{color:#2d3748;font-size:1.6rem;margin:3rem 0 1.5rem;letter-spacing:-.005em}.article-content h3,.article-content h4{font-weight:500;font-family:Georgia,Times New Roman,serif}.article-content h4{color:#4a5568;font-size:1.3rem;margin:2rem 0 1rem}.article-content p{margin-bottom:1.5rem;text-align:left;color:#2d3748;font-size:1.1rem;line-height:1.8}.article-content ol,.article-content ul{margin-bottom:1.5rem;padding-left:2rem}.article-content li{margin-bottom:.5rem}.article-content code{background:var(--bg-accent);padding:.2rem 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