@import "https://cdn.imweb.me/fonts/pretendard/web/static/pretendard.css";:root{--primary:#000;--primary-light:#222;--primary-dark:#000;--primary-glow:#0000000d;--accent:#222;--bg-main:#fff;--bg-alt:#f8f9fa;--bg-card:#fff;--text-primary:#000;--text-secondary:#333;--text-muted:#767676;--border-color:#e5e5e5;--border-active:#111;--header-height:72px;--container-width:1140px;--radius-lg:24px;--radius-md:16px;--radius-sm:8px;--shadow-sm:0 2px 8px #00000008;--shadow-md:0 8px 24px #0000000f;--shadow-lg:0 16px 48px #00000017;--shadow-focus:0 0 0 4px #0000001a;--transition-smooth:all .3s cubic-bezier(.4, 0, .2, 1);--transition-fast:all .15s ease}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px}body{background-color:var(--bg-main);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Pretendard,-apple-system,BlinkMacSystemFont,system-ui,Roboto,sans-serif;line-height:1.6}a{color:inherit;transition:var(--transition-fast);text-decoration:none}ul,ol{list-style:none}button,input,select,textarea{font:inherit;color:inherit;background:0 0;border:none}button{cursor:pointer}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-alt)}::-webkit-scrollbar-thumb{background:#ccc;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#999}.container{max-width:var(--container-width);width:100%;margin:0 auto;padding:0 24px}.section-padding{padding:100px 0}@media (width<=768px){.section-padding{padding:60px 0}}.bg-alt{background-color:var(--bg-alt)}.section-title{text-align:center;letter-spacing:-.03em;margin-bottom:50px;font-size:2.25rem;font-weight:800;position:relative}.section-title:after{content:"";background-color:var(--primary);border-radius:2px;width:40px;height:4px;margin:12px auto 0;display:block}.section-title .subtitle{color:var(--text-secondary);margin-top:8px;font-size:1.1rem;font-weight:500;display:block}.grid{gap:24px;display:grid}.grid-2-col{grid-template-columns:repeat(2,1fr)}.grid-3-col{grid-template-columns:repeat(3,1fr)}@media (width<=992px){.grid-3-col{grid-template-columns:repeat(2,1fr)}}@media (width<=768px){.grid-2-col,.grid-3-col{grid-template-columns:1fr}}.btn{border-radius:var(--radius-md);transition:var(--transition-smooth);letter-spacing:-.01em;justify-content:center;align-items:center;gap:8px;padding:14px 28px;font-size:.95rem;font-weight:700;display:inline-flex}.btn-sm{border-radius:var(--radius-sm);padding:10px 18px;font-size:.85rem}.btn-lg{border-radius:var(--radius-md);padding:16px 36px;font-size:1.05rem}.btn-primary{background-color:var(--primary);color:#fff!important}.btn-primary:hover{background-color:#333;transform:translateY(-2px);box-shadow:0 8px 20px #00000026}.btn-primary:active{transform:translateY(0)}.btn-outline-white{background-color:#0000;border:1.5px solid #ffffff80;color:#fff!important}.btn-outline-white:hover{background-color:#ffffff1a;border-color:#fff;transform:translateY(-2px)}.btn-outline-primary{border:1.5px solid var(--primary);background-color:#0000;color:var(--primary)!important}.btn-outline-primary:hover{background-color:var(--primary-glow);transform:translateY(-2px)}.badge{letter-spacing:-.01em;border-radius:30px;align-items:center;padding:6px 12px;font-size:.8rem;font-weight:700;display:inline-flex}.badge-accent{background-color:var(--primary-glow);color:var(--primary);border:1px solid #0000001a}.badge-tool{background-color:var(--bg-alt);color:var(--text-secondary);border:1px solid var(--border-color);transition:var(--transition-smooth);font-weight:500}.badge-tool:hover{background-color:var(--primary);color:#fff;border-color:var(--primary);transform:translateY(-2px)}#main-header{height:var(--header-height);-webkit-backdrop-filter:blur(12px);z-index:1000;transition:var(--transition-smooth);background-color:#ffffffe6;border-bottom:1px solid #e5e5e5cc;position:fixed;top:0;left:0;right:0}.scroll-progress-container{background-color:#0000000d;width:100%;height:3px;position:absolute;bottom:0;left:0;right:0;overflow:hidden}.scroll-progress-bar{background-color:var(--primary);width:0;height:100%;transition:width .1s cubic-bezier(.1,.8,.3,1)}.header-container{max-width:var(--container-width);justify-content:space-between;align-items:center;height:100%;margin:0 auto;padding:0 24px;display:flex}.logo{letter-spacing:-.03em;align-items:center;gap:4px;font-size:1.25rem;font-weight:900;display:flex}.logo-yuntaek{color:var(--primary)}.logo-jobs{color:var(--text-muted)}.nav-menu ul{gap:32px;display:flex}.nav-link{color:var(--text-secondary);padding:8px 4px;font-size:.95rem;font-weight:600;position:relative}.nav-link:hover,.nav-link.active{color:var(--primary)}.nav-link:after{content:"";background-color:var(--primary);height:2.5px;transition:var(--transition-smooth);border-radius:4px;position:absolute;bottom:0;left:0;right:0;transform:scaleX(0)}.nav-link:hover:after,.nav-link.active:after{transform:scaleX(1)}@media (width<=768px){.nav-menu{display:none}}#hero{padding-top:calc(var(--header-height) + 60px);background:radial-gradient(circle at 80% 20%,#00000005 0%,#fff0 50%),radial-gradient(circle at 10% 80%,#00000003 0%,#fff0 60%);padding-bottom:100px;overflow:hidden}.hero-container{align-items:center;gap:48px;display:flex}.hero-content{flex:1.2}.hero-content .badge-accent{margin-bottom:20px}.hero-content h1{letter-spacing:-.04em;margin-bottom:24px;font-size:3.25rem;font-weight:850;line-height:1.25}.hero-content h1 .highlight{color:var(--primary);background:linear-gradient(120deg, var(--primary), #333);-webkit-text-fill-color:transparent;-webkit-background-clip:text}.hero-lead{color:var(--text-secondary);word-break:keep-all;margin-bottom:36px;font-size:1.15rem}.hero-actions-group{gap:16px;display:flex}.hero-card{background-color:var(--bg-card);border-radius:var(--radius-lg);border:1.5px solid var(--primary);box-shadow:var(--shadow-lg);flex:.8;padding:36px;position:relative;overflow:hidden}.hero-card:before{content:"";background:var(--primary);height:6px;position:absolute;top:0;left:0;right:0}.card-profile-info .profile-header{margin-bottom:28px}.card-profile-info .profile-header h2{letter-spacing:-.02em;margin-bottom:4px;font-size:1.75rem;font-weight:800}.card-profile-info .profile-header p{color:var(--primary);font-size:.95rem;font-weight:700}.profile-contact-list{flex-direction:column;gap:16px;margin-bottom:32px;display:flex}.profile-contact-list li{color:var(--text-secondary);align-items:center;gap:12px;font-size:.95rem;display:flex}.profile-contact-list li svg{color:var(--text-muted);flex-shrink:0}.profile-contact-list li a:hover{color:var(--primary);text-decoration:underline}.profile-footer{border-top:1px solid var(--border-color);flex-wrap:wrap;gap:8px;padding-top:24px;display:flex}.tech-tag{background-color:var(--bg-alt);color:var(--text-secondary);border:1px solid var(--border-color);border-radius:6px;padding:6px 12px;font-size:.8rem;font-weight:600}@media (width<=992px){.hero-container{text-align:center;flex-direction:column;gap:40px}.hero-content h1{font-size:2.5rem}.hero-actions-group{justify-content:center}.hero-card{width:100%;max-width:480px}.profile-contact-list{align-items:center}}.about-box{background-color:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border-color);box-shadow:var(--shadow-md);padding:48px}.about-icon-header{align-items:center;gap:16px;margin-bottom:28px;display:flex}.about-icon-header h3{letter-spacing:-.02em;font-size:1.5rem;font-weight:800}.about-content{flex-direction:column;gap:20px;display:flex}.about-paragraph{color:var(--text-secondary);word-break:keep-all;font-size:1.05rem;line-height:1.7}@media (width<=768px){.about-box{padding:32px 24px}}.skill-card{background-color:var(--bg-card);border-radius:var(--radius-lg);border:1px solid 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0;position:relative}.timeline:before{content:"";background-color:var(--border-color);width:2px;position:absolute;top:0;bottom:0;left:31px}.timeline-item{margin-bottom:60px;padding-left:80px;position:relative}.timeline-item:last-child{margin-bottom:0}.timeline-badge{border:4px solid var(--primary);z-index:10;width:24px;height:24px;transition:var(--transition-smooth);background-color:#fff;border-radius:50%;position:absolute;top:4px;left:20px;box-shadow:0 0 0 4px #fff}.timeline-item:hover .timeline-badge{background-color:var(--primary);transform:scale(1.2)}.timeline-panel{background-color:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);transition:var(--transition-smooth);padding:40px}.timeline-item:hover .timeline-panel{box-shadow:var(--shadow-md);border-color:var(--text-secondary)}.timeline-header{border-bottom:1px solid var(--border-color);flex-direction:column;gap:8px;margin-bottom:24px;padding-bottom:20px;display:flex}.timeline-header .period{color:var(--primary);text-transform:uppercase;letter-spacing:.05em;font-size:.85rem;font-weight:700}.timeline-header h3{letter-spacing:-.02em;flex-wrap:wrap;align-items:center;gap:8px;font-size:1.5rem;font-weight:800;display:flex}.timeline-header .position{color:var(--text-secondary);font-size:1.1rem;font-weight:600}.timeline-body h4{color:var(--text-primary);margin-top:24px;margin-bottom:12px;font-size:1.05rem;font-weight:700}.timeline-body h4:first-of-type{margin-top:0}.achievement-list{flex-direction:column;gap:10px;margin-bottom:12px;display:flex}.achievement-list li{color:var(--text-secondary);word-break:keep-all;padding-left:18px;font-size:.95rem;line-height:1.6;position:relative}.achievement-list li:before{content:"✓";color:var(--primary);font-size:.85rem;font-weight:800;position:absolute;left:0}.achievement-list li.highlight-achievement{color:var(--text-primary);font-weight:700}.achievement-list li.highlight-achievement:before{content:"★";color:var(--primary)}.task-list{flex-direction:column;gap:8px;margin-bottom:24px;display:flex}.task-list li{color:var(--text-secondary);padding-left:14px;font-size:.9rem;position:relative}.task-list li:before{content:"-";color:var(--text-muted);position:absolute;left:0}.used-tools{border-top:1px dashed var(--border-color);flex-wrap:wrap;gap:6px;margin-top:24px;padding-top:20px;display:flex}.tool-tag{background-color:var(--bg-alt);color:var(--text-secondary);border:1px solid var(--border-color);border-radius:4px;padding:4px 10px;font-size:.8rem;font-weight:600}@media (width<=768px){.timeline:before{left:15px}.timeline-badge{left:4px}.timeline-item{padding-left:40px}.timeline-panel{padding:24px 20px}.timeline-header h3{font-size:1.2rem}.timeline-header .position{font-size:.95rem}}.project-grid{grid-template-columns:repeat(3,1fr);gap:24px;display:grid}@media 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.arrow{transform:translate(6px)}.project-kpi-highlight{background-color:var(--bg-alt);border-radius:var(--radius-sm);border-left:3px solid var(--primary);transition:var(--transition-smooth);flex-direction:column;margin-top:16px;padding:12px 16px;display:flex}.project-card:hover .project-kpi-highlight{background-color:#00000008}.kpi-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;transition:var(--transition-smooth);margin-bottom:2px;font-size:.75rem;font-weight:700}.kpi-value{color:var(--primary);letter-spacing:-.02em;transition:var(--transition-smooth);font-size:1.15rem;font-weight:850}.project-card-header{padding:32px 32px 16px}.project-corp-period{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.project-corp{color:var(--primary);background-color:var(--primary-glow);border:1px solid #0000001a;border-radius:4px;padding:4px 10px;font-size:.8rem;font-weight:800}.project-period{color:var(--text-muted);font-size:.8rem;font-weight:500}.project-title{letter-spacing:-.02em;word-break:keep-all;font-size:1.35rem;font-weight:800;line-height:1.3}.project-card-body{flex-grow:1;padding:0 32px 32px}.project-summary-list{flex-direction:column;gap:8px;display:flex}.project-summary-list li{color:var(--text-secondary);word-break:keep-all;padding-left:14px;font-size:.95rem;line-height:1.5;position:relative}.project-summary-list li:before{content:"•";color:var(--primary-light);position:absolute;left:0}.project-card-footer{border-top:1px solid var(--border-color);background-color:var(--bg-alt);padding:20px 32px 32px}.btn-detail-link{color:var(--primary);transition:var(--transition-fast);align-items:center;gap:6px;font-size:.9rem;font-weight:700;display:flex}.btn-detail-link .arrow{transition:transform .2s}.btn-detail-link:hover{color:var(--primary-light)}.btn-detail-link:hover .arrow{transform:translate(4px)}.modal-overlay{-webkit-backdrop-filter:blur(8px);z-index:1100;opacity:0;pointer-events:none;background-color:#0000008c;justify-content:center;align-items:center;padding:20px;transition:opacity .28s cubic-bezier(.4,0,.2,1);display:flex;position:fixed;inset:0}.modal-overlay.active{opacity:1;pointer-events:auto}.modal-container{border-radius:var(--radius-lg);opacity:0;background-color:#fff;flex-direction:column;width:100%;max-width:1080px;max-height:90vh;transition:transform .28s cubic-bezier(.34,1.56,.64,1),opacity .28s cubic-bezier(.4,0,.2,1);display:flex;position:relative;overflow:hidden;transform:scale(.95)translateY(10px);box-shadow:0 32px 80px #00000040}.modal-overlay.active .modal-container{opacity:1;transform:scale(1)translateY(0)}.modal-close-btn{width:36px;height:36px;color:var(--text-secondary);background-color:var(--bg-alt);border:1px solid var(--border-color);transition:var(--transition-smooth);z-index:10;border-radius:50%;justify-content:center;align-items:center;display:flex;position:absolute;top:32px;right:32px}.modal-close-btn:hover{color:#fff;background-color:#000;border-color:#000;transform:scale(1.05)}.modal-header{padding:40px 40px 20px}.modal-corp-period{align-items:center;gap:12px;margin-bottom:12px;display:flex}.modal-corp{color:var(--primary);background-color:var(--primary-glow);border:1px solid #0000001a;border-radius:6px;padding:6px 14px;font-size:.8rem;font-weight:800}.modal-period{color:var(--text-muted);font-size:.85rem;font-weight:500}.modal-title{letter-spacing:-.03em;color:var(--text-primary);margin-top:4px;font-size:2.1rem;font-weight:850}.modal-content-scrollable{flex-grow:1;padding:0 40px 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.card-text{color:var(--text-secondary);word-break:keep-all;font-size:.85rem;line-height:1.6}.modal-card.problem{background-color:#fff5f5;border-color:#fecdd3}.modal-card.problem .card-badge{color:#e11d48;background-color:#ffe4e6}.modal-card.problem .card-title{color:#be123c}.modal-card.hypothesis{background-color:#fef6ee;border-color:#fed7aa}.modal-card.hypothesis .card-badge{color:#ea580c;background-color:#ffedd5}.modal-card.hypothesis .card-title{color:#c2410c}.modal-card.experiment{background-color:#faf5ff;border-color:#e9d5ff}.modal-card.experiment .card-badge{color:#9333ea;background-color:#f3e8ff}.modal-card.experiment .card-title{color:#7e22ce}.modal-card.result{background-color:#f0fdf4;border-color:#bbf7d0}.modal-card.result .card-badge{color:#16a34a;background-color:#dcfce7}.modal-card.result .card-title{color:#15803d}.modal-card.contribution{background-color:#eff6ff;border-color:#dbeafe}.modal-card.contribution .card-badge{color:#2563eb;background-color:#dbeafe}.modal-card.contribution .card-title{color:#1d4ed8}.modal-detail-card{background-color:var(--bg-alt);border-radius:var(--radius-md);border:1px solid var(--border-color);padding:36px}.modal-detail-card p{color:var(--text-secondary);word-break:keep-all;margin-bottom:20px;font-size:.95rem;line-height:1.75}.modal-detail-card p:last-child{margin-bottom:0}@media (width<=992px){.modal-pipeline-grid{grid-template-columns:repeat(3,1fr)}}@media (width<=768px){.modal-container{max-height:95vh}.modal-header{padding:30px 24px 20px}.modal-close-btn{top:24px;right:24px}.modal-title{font-size:1.6rem}.modal-content-scrollable{padding:0 24px 24px}.modal-pipeline-grid{grid-template-columns:1fr}.modal-detail-card{padding:24px 20px}}.edu-grid{flex-direction:column;gap:24px;max-width:800px;margin:0 auto;display:flex}.edu-card{background-color:var(--bg-card);border-radius:var(--radius-lg);border:1px solid 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h2{letter-spacing:-.03em;margin-bottom:16px;font-size:2.25rem;font-weight:850;line-height:1.3}.footer-cta p{color:#ccc;word-break:keep-all;margin-bottom:36px;font-size:1.1rem}.cta-buttons{flex-wrap:wrap;justify-content:center;gap:16px;display:flex}.footer-bottom{color:#888;border-top:1px solid #ffffff14;justify-content:space-between;align-items:center;padding-top:40px;font-size:.85rem;display:flex}.footer-copyright-tech{flex-direction:column;gap:6px;display:flex}.footer-copyright-tech .copyright{font-weight:500}.footer-copyright-tech .tech-stack{color:#fff3;font-size:.8rem}.footer-contact-info{gap:24px;display:flex}.footer-contact-info span{align-items:center;gap:8px;display:flex}.footer-icon{color:#fff}@media (width<=768px){#contact{padding:60px 0 30px}.footer-cta h2{font-size:1.75rem}.footer-bottom{text-align:center;flex-direction:column;gap:24px}.footer-contact-info{flex-direction:column;align-items:center;gap:12px}}.fade-in-element{opacity:0;transition:opacity .8s cubic-bezier(.25,1,.5,1),transform .8s cubic-bezier(.25,1,.5,1);transform:translateY(30px)}.fade-in-element.visible{opacity:1;transform:translateY(0)}.scroll-to-top-btn{color:#000;border:1px solid var(--border-color);z-index:999;width:48px;height:48px;transition:var(--transition-smooth);background-color:#fff;border-radius:50%;justify-content:center;align-items:center;display:flex;position:fixed;bottom:32px;right:32px;box-shadow:0 4px 20px #00000026}.scroll-to-top-btn:hover{color:#fff;background-color:#000;border-color:#000;transform:translateY(-4px);box-shadow:0 8px 24px #00000040}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(40px)}to{opacity:1;transform:translateY(0)}}