:root{--bg-primary: #0d1117;--bg-secondary: #161b22;--bg-tertiary: #1c2128;--bg-overlay: #21262d;--bg-hover: #30363d33;--border-default: #30363d;--border-muted: #21262d;--border-accent: #388bfd;--text-primary: #e6edf3;--text-secondary: #8b949e;--text-muted: #6e7681;--text-link: #58a6ff;--accent-blue: #388bfd;--accent-blue-muted: #1f3a5f;--accent-green: #3fb950;--accent-green-muted: #1a3a25;--accent-orange: #d29922;--accent-orange-muted: #3d2f0a;--accent-purple: #bc8cff;--accent-purple-muted: #2d1f4e;--accent-red: #f85149;--accent-red-muted: #3d1212;--accent-teal: #39d353;--accent-teal-muted: #0d3318;--accent-yellow: #e3b341;--accent-yellow-muted: #3a2c00;--sidebar-width: 260px;--font-sans: "Pretendard Variable", "Pretendard", "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "Consolas", monospace;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px;--space-16: 64px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .4);--shadow-md: 0 4px 12px 0 rgba(0, 0, 0, .5);--shadow-lg: 0 8px 24px 0 rgba(0, 0, 0, .6);--shadow-glow-blue: 0 0 16px rgba(56, 139, 253, .3);--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .4s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}#root{min-height:100vh}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.3;color:var(--text-primary)}h1{font-size:2rem}h2{font-size:1.5rem}h3{font-size:1.25rem}h4{font-size:1.1rem}p{color:var(--text-secondary);line-height:1.7}a{color:var(--text-link);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--text-primary)}ul{list-style:none}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--border-default);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}::selection{background:var(--accent-blue-muted);color:var(--text-primary)}:focus-visible{outline:2px solid var(--accent-blue);outline-offset:2px}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}.animate-fade-in{animation:fadeIn .4s ease forwards}.animate-fade-in-up{animation:fadeInUp .5s ease forwards}.animate-pulse{animation:pulse 2s cubic-bezier(.4,0,.6,1) infinite}.nav-item{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);border-radius:var(--radius-md);color:var(--text-secondary);text-decoration:none;font-size:.9rem;font-weight:500;transition:background-color var(--transition-fast),color var(--transition-fast);position:relative}.nav-item:before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);width:3px;height:70%;background:var(--accent-blue);border-radius:0 var(--radius-sm) var(--radius-sm) 0;transition:transform var(--transition-fast)}.nav-item:hover{background-color:var(--bg-hover);color:var(--text-primary)}.nav-item.active{color:var(--text-primary);background-color:var(--accent-blue-muted)}.nav-item.active:before{transform:translateY(-50%) scaleY(1)}.nav-icon{flex-shrink:0;opacity:.7;transition:opacity var(--transition-fast)}.nav-item:hover .nav-icon,.nav-item.active .nav-icon{opacity:1}.sidebar{position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-width);background-color:var(--bg-secondary);border-right:1px solid var(--border-default);display:flex;flex-direction:column;padding:var(--space-6) var(--space-4);z-index:100;transition:transform var(--transition-normal)}.sidebar-overlay{display:none}.sidebar-close-btn{display:none;position:absolute;top:var(--space-4);right:var(--space-4);background:none;border:none;color:var(--text-secondary);cursor:pointer;padding:var(--space-1);border-radius:var(--radius-sm);transition:color var(--transition-fast)}.sidebar-close-btn:hover{color:var(--text-primary)}.sidebar-profile{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);margin-bottom:var(--space-6);border-bottom:1px solid var(--border-muted);padding-bottom:var(--space-6)}.sidebar-avatar{width:42px;height:42px;border-radius:50%;object-fit:cover;border:2px solid var(--border-default);flex-shrink:0}.sidebar-profile-info{display:flex;flex-direction:column;gap:2px;overflow:hidden}.sidebar-name{font-size:.95rem;font-weight:600;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-role{font-size:.75rem;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-nav{display:flex;flex-direction:column;gap:var(--space-1);flex:1}.sidebar-footer{padding-top:var(--space-4);border-top:1px solid var(--border-muted);display:flex;flex-direction:column;gap:var(--space-2)}.sidebar-social{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-4);color:var(--text-muted);font-size:.8rem;text-decoration:none;border-radius:var(--radius-sm);transition:color var(--transition-fast),background-color var(--transition-fast);overflow:hidden}.sidebar-social span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-social:hover{color:var(--text-link);background-color:var(--bg-hover)}@media(max-width:768px){.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0);box-shadow:var(--shadow-lg)}.sidebar-overlay{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;z-index:99}.sidebar-close-btn{display:flex;align-items:center;justify-content:center}}.layout{display:flex;min-height:100vh}.layout-main{margin-left:var(--sidebar-width);flex:1;min-width:0;display:flex;flex-direction:column}.mobile-header{display:none;align-items:center;gap:var(--space-4);padding:var(--space-4) var(--space-6);border-bottom:1px solid var(--border-default);background-color:var(--bg-secondary);position:sticky;top:0;z-index:50}.hamburger-btn{background:none;border:none;color:var(--text-secondary);cursor:pointer;padding:var(--space-1);border-radius:var(--radius-sm);display:flex;align-items:center;transition:color var(--transition-fast)}.hamburger-btn:hover{color:var(--text-primary)}.mobile-title{font-size:.95rem;font-weight:600;color:var(--text-primary)}.page-container{flex:1;padding:var(--space-12) var(--space-10);max-width:900px;width:100%}@media(max-width:1024px){.page-container{padding:var(--space-10) var(--space-8)}}@media(max-width:768px){.layout-main{margin-left:0}.mobile-header{display:flex}.page-container{padding:var(--space-8) var(--space-6)}}@media(max-width:480px){.page-container{padding:var(--space-6) var(--space-4)}}.animated-section{opacity:0;transform:translateY(20px);transition:opacity .5s ease,transform .5s ease}.animated-section.visible{opacity:1;transform:translateY(0)}.section-title{margin-bottom:var(--space-8)}.section-title__text{font-size:1.4rem;font-weight:700;color:var(--text-primary);margin-bottom:var(--space-2)}.section-title__sub{color:var(--text-muted);font-size:.9rem;margin-bottom:var(--space-3)}.section-title__line{width:40px;height:3px;background:linear-gradient(90deg,var(--accent-blue),transparent);border-radius:var(--radius-full)}.badge{display:inline-flex;align-items:center;border-radius:var(--radius-full);font-weight:500;white-space:nowrap;border:1px solid transparent;font-size:.75rem;padding:3px 10px}.badge--md{font-size:.8rem;padding:4px 12px}.badge--sm{font-size:.7rem;padding:2px 8px}.badge--default{background:var(--bg-overlay);color:var(--text-secondary);border-color:var(--border-default)}.badge--blue{background:var(--accent-blue-muted);color:#58a6ff;border-color:#388bfd4d}.badge--green{background:var(--accent-green-muted);color:#56d364;border-color:#3fb9504d}.badge--purple{background:var(--accent-purple-muted);color:#d2a8ff;border-color:#bc8cff4d}.badge--orange{background:var(--accent-orange-muted);color:#e3b341;border-color:#d299224d}.badge--red{background:var(--accent-red-muted);color:#ffa198;border-color:#f851494d}.badge--teal{background:var(--accent-teal-muted);color:#7ee787;border-color:#39d3534d}.badge--yellow{background:var(--accent-yellow-muted);color:#e3b341;border-color:#e3b3414d}.badge--tech{background:var(--bg-tertiary);color:var(--text-secondary);border-color:var(--border-default);font-size:.75rem;padding:3px 8px}.badge--tech:hover{border-color:var(--accent-blue);color:var(--text-primary)}.about{display:flex;flex-direction:column;gap:var(--space-12)}.about-hero{display:flex;gap:var(--space-8);align-items:flex-start;padding:var(--space-8);background:var(--bg-secondary);border:1px solid var(--border-default);border-radius:var(--radius-xl)}.hero-photo-wrapper{flex-shrink:0}.hero-photo{width:120px;height:120px;border-radius:50%;object-fit:cover;border:3px solid var(--border-default);box-shadow:0 0 0 4px var(--accent-blue-muted)}.hero-info{display:flex;flex-direction:column;gap:var(--space-3);min-width:0}.hero-names{display:flex;align-items:baseline;gap:var(--space-3);flex-wrap:wrap}.hero-name-ko{font-size:2rem;font-weight:700;color:var(--text-primary);margin:0}.hero-name-en{font-size:1.1rem;color:var(--text-muted);font-weight:400}.hero-title-badge{display:inline-flex;align-items:center;background:var(--accent-blue-muted);color:#58a6ff;border:1px solid rgba(56,139,253,.3);border-radius:var(--radius-full);padding:4px 14px;font-size:.85rem;font-weight:500;width:fit-content}.hero-tagline{color:var(--text-secondary);font-size:.95rem;margin:0}.hero-meta{display:flex;gap:var(--space-4);flex-wrap:wrap}.hero-meta-item{display:flex;align-items:center;gap:var(--space-1);font-size:.82rem;color:var(--text-muted)}.hero-contacts{display:flex;gap:var(--space-4);flex-wrap:wrap;margin-top:var(--space-1)}.contact-link{display:flex;align-items:center;gap:var(--space-2);color:var(--text-secondary);font-size:.85rem;text-decoration:none;transition:color var(--transition-fast)}.contact-link:hover{color:var(--text-link)}.about-intro{background:var(--bg-secondary);border:1px solid var(--border-default);border-left:3px solid var(--accent-blue);border-radius:0 var(--radius-lg) var(--radius-lg) 0;padding:var(--space-6) var(--space-8);display:flex;flex-direction:column;gap:var(--space-2)}.about-intro p{color:var(--text-secondary);line-height:1.8;font-size:.95rem}.skills-grid{display:flex;flex-direction:column;gap:var(--space-4)}.skill-group{display:flex;align-items:flex-start;gap:var(--space-4)}.skill-group-label{font-size:.8rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;min-width:130px;padding-top:5px;flex-shrink:0}.skill-badges{display:flex;flex-wrap:wrap;gap:var(--space-2)}.career-timeline{position:relative;display:flex;flex-direction:column;gap:0}.career-timeline:before{content:"";position:absolute;left:11px;top:16px;bottom:16px;width:1px;background:var(--border-default)}.timeline-item{display:flex;gap:var(--space-6);position:relative;padding-bottom:var(--space-8)}.timeline-item:last-child{padding-bottom:0}.timeline-dot{width:24px;height:24px;border-radius:50%;background:var(--bg-secondary);border:2px solid var(--border-default);flex-shrink:0;margin-top:2px;position:relative;z-index:1}.timeline-item.current .timeline-dot{border-color:var(--accent-blue);background:var(--accent-blue-muted);box-shadow:0 0 0 4px #388bfd26}.timeline-content{flex:1;min-width:0;padding:var(--space-5) var(--space-6);background:var(--bg-secondary);border:1px solid var(--border-default);border-radius:var(--radius-lg)}.timeline-item.current .timeline-content{border-color:#388bfd4d}.timeline-content--clickable{cursor:pointer;transition:border-color var(--transition-fast),box-shadow var(--transition-fast),background-color var(--transition-fast)}.timeline-content--clickable:hover{border-color:var(--accent-blue)!important;box-shadow:var(--shadow-glow-blue);background-color:var(--bg-tertiary)}.timeline-header{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:var(--space-2);margin-bottom:var(--space-2)}.timeline-header-right{display:flex;align-items:center;gap:var(--space-2)}.timeline-link-icon{color:var(--text-muted);opacity:0;transition:opacity var(--transition-fast);flex-shrink:0}.timeline-content--clickable:hover .timeline-link-icon{opacity:1;color:var(--accent-blue)}.timeline-company-info{display:flex;align-items:center;gap:var(--space-2)}.timeline-company{font-size:1.1rem;font-weight:700;color:var(--text-primary);margin:0}.current-badge{background:var(--accent-green-muted);color:#56d364;border:1px solid rgba(63,185,80,.3);border-radius:var(--radius-full);padding:2px 8px;font-size:.7rem;font-weight:600}.timeline-period{font-size:.82rem;color:var(--text-muted);white-space:nowrap}.timeline-role{font-size:.9rem;font-weight:600;color:var(--accent-blue);margin-bottom:var(--space-1)}.timeline-desc{font-size:.85rem;color:var(--text-secondary);margin-bottom:var(--space-2)}.timeline-headcount{font-size:.8rem;color:var(--text-muted);margin-bottom:var(--space-3);font-style:italic}.timeline-projects{display:flex;flex-direction:column;gap:var(--space-1)}.timeline-projects li{font-size:.82rem;color:var(--text-secondary);display:flex;gap:var(--space-2)}.project-dot{color:var(--accent-blue);flex-shrink:0}.more-projects{color:var(--text-muted);font-style:italic}.awards-section{display:flex;flex-direction:column;gap:var(--space-4)}.cert-list,.award-list{display:flex;flex-direction:column;gap:var(--space-3)}.cert-item,.award-item{display:flex;align-items:flex-start;gap:var(--space-3);padding:var(--space-4) var(--space-5);background:var(--bg-secondary);border:1px solid var(--border-default);border-radius:var(--radius-md)}.cert-icon{color:var(--accent-orange);flex-shrink:0;margin-top:2px}.award-icon{color:var(--accent-yellow);flex-shrink:0;margin-top:2px}.cert-item div,.award-item div{display:flex;flex-direction:column;gap:3px}.cert-title,.award-title{font-size:.9rem;font-weight:600;color:var(--text-primary)}.cert-year,.award-meta{font-size:.78rem;color:var(--text-muted)}@media(max-width:600px){.about-hero{flex-direction:column;align-items:center;text-align:center}.hero-contacts{justify-content:center}.skill-group{flex-direction:column;gap:var(--space-2)}.skill-group-label{min-width:unset}}.career-desc{display:flex;flex-direction:column;gap:var(--space-12)}.company-section{display:flex;flex-direction:column;gap:var(--space-4)}.company-header{display:flex;align-items:flex-start;gap:var(--space-4);padding:var(--space-6) var(--space-6);background:var(--bg-secondary);border:1px solid var(--border-default);border-radius:var(--radius-lg);border-left:4px solid var(--accent-blue)}.company-icon{color:var(--accent-blue);flex-shrink:0;margin-top:2px}.company-header-info{display:flex;flex-direction:column;gap:var(--space-1);flex:1;min-width:0}.company-header-row{display:flex;align-items:center;gap:var(--space-3);flex-wrap:wrap}.company-name{font-size:1.2rem;font-weight:700;color:var(--text-primary);margin:0}.company-current-badge{background:var(--accent-green-muted);color:#56d364;border:1px solid rgba(63,185,80,.3);border-radius:var(--radius-full);padding:2px 8px;font-size:.7rem;font-weight:600}.company-period{font-size:.85rem;color:var(--text-muted)}.company-role-line{display:flex;gap:var(--space-2);flex-wrap:wrap;align-items:center;font-size:.88rem;margin:0}.company-role{color:var(--accent-blue);font-weight:600}.company-sep{color:var(--text-muted)}.company-desc{color:var(--text-secondary)}.company-headcount{font-size:.8rem;color:var(--text-muted);font-style:italic;margin:0}.projects-list{display:flex;flex-direction:column;gap:var(--space-3)}.project-card{background:var(--bg-secondary);border:1px solid var(--border-default);border-radius:var(--radius-lg);overflow:hidden;transition:border-color var(--transition-fast)}.project-card:hover{border-color:var(--border-accent)}.project-card.expanded{border-color:#388bfd66}.project-card-header{width:100%;display:flex;align-items:center;justify-content:space-between;padding:var(--space-4) var(--space-6);background:none;border:none;cursor:pointer;gap:var(--space-4);text-align:left;color:inherit;transition:background-color var(--transition-fast)}.project-card-header:hover{background-color:var(--bg-hover)}.project-card-title-row{display:flex;align-items:center;gap:var(--space-4);flex:1;min-width:0}.project-index{font-size:.75rem;font-weight:700;color:var(--text-muted);font-family:var(--font-mono);flex-shrink:0}.project-card-title{font-size:.95rem;font-weight:600;color:var(--text-primary);margin:0;line-height:1.4}.project-card-meta{display:flex;align-items:center;gap:var(--space-3);flex-shrink:0;color:var(--text-muted)}.project-subtitle{font-size:.75rem;color:var(--accent-blue);background:var(--accent-blue-muted);padding:2px 8px;border-radius:var(--radius-full);white-space:nowrap}.project-card-body{padding:var(--space-6);border-top:1px solid var(--border-muted);display:flex;flex-direction:column;gap:var(--space-5)}.project-section{display:flex;flex-direction:column;gap:var(--space-2)}.project-section-title{font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin:0}.result-title{color:var(--accent-green)}.project-section-text{font-size:.88rem;color:var(--text-secondary);line-height:1.7;margin:0}.project-bullet-list,.project-result-list{display:flex;flex-direction:column;gap:var(--space-2)}.project-bullet-list li{font-size:.88rem;color:var(--text-secondary);line-height:1.6;padding-left:var(--space-4);position:relative}.project-bullet-list li:before{content:"•";position:absolute;left:4px;color:var(--text-muted)}.project-result-list li{font-size:.88rem;color:var(--text-secondary);line-height:1.6;padding-left:var(--space-5);position:relative}.project-result-list li:before{content:"✓";position:absolute;left:2px;color:var(--accent-green);font-weight:700}.project-tech-tags{display:flex;flex-wrap:wrap;gap:var(--space-2);padding-top:var(--space-3);border-top:1px solid var(--border-muted)}@media(max-width:600px){.project-card-header{flex-direction:column;align-items:flex-start;gap:var(--space-2)}.project-card-meta{width:100%;justify-content:space-between}}.side-projects{display:flex;flex-direction:column;gap:var(--space-6)}.project-cards-grid{display:flex;flex-direction:column;gap:var(--space-4)}.side-project-card{background:var(--bg-secondary);border:1px solid var(--border-default);border-radius:var(--radius-lg);padding:var(--space-6);display:flex;flex-direction:column;gap:var(--space-4);transition:border-color var(--transition-fast),box-shadow var(--transition-fast);border-left-width:3px}.side-project-card:hover{box-shadow:var(--shadow-md)}.side-project-card.type-blue{border-left-color:var(--accent-blue)}.side-project-card.type-purple{border-left-color:var(--accent-purple)}.side-project-card.type-orange{border-left-color:var(--accent-orange)}.side-project-card.type-green{border-left-color:var(--accent-green)}.sp-card-header{display:flex;justify-content:space-between;align-items:center}.sp-type-badge{display:inline-flex;align-items:center;gap:var(--space-1);font-size:.72rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.sp-year{font-size:.82rem;color:var(--text-muted);font-family:var(--font-mono)}.sp-title{font-size:1rem;font-weight:700;color:var(--text-primary);margin:0;line-height:1.4}.sp-award{display:inline-flex;align-items:center;gap:var(--space-2);background:var(--accent-yellow-muted);color:var(--accent-yellow);border:1px solid rgba(227,179,65,.3);border-radius:var(--radius-md);padding:var(--space-2) var(--space-3);font-size:.78rem;font-weight:500;width:fit-content}.sp-description{font-size:.88rem;color:var(--text-secondary);line-height:1.7;margin:0}.sp-tech-tags{display:flex;flex-wrap:wrap;gap:var(--space-2);margin-top:var(--space-1)}