:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:dark;color:#ffffffde;background-color:#0f1419;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;padding:0;width:100%;height:100%;min-height:100vh}#root{width:100%;height:100%;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;height:100%;width:100%}body{font-family:Pretendard,Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:#0f1419;color:#fff;margin:0;padding:0;overflow-x:hidden;height:100%;width:100%}#root{height:100%;width:100%;min-height:100vh}.app{position:relative;width:100%;min-height:100vh}.nav-bar{position:fixed;top:0;left:0;right:0;display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;background:#0f1419f2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(52,152,255,.3);z-index:1000;transition:all .3s ease;height:60px;transform:translateY(0)}.nav-bar.scrolled{background:#0f1419fa;-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);border-bottom:1px solid rgba(52,152,255,.4);box-shadow:0 2px 20px #0000004d}.nav-bar.hidden{transform:translateY(-100%)}.nav-bar.visible{transform:translateY(0)}.nav-brand{font-size:1.2rem;font-weight:700;background:linear-gradient(45deg,#3498ff,#64b5f6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;white-space:nowrap}.desktop-nav{display:flex;gap:1.5rem}.desktop-nav button{background:none;border:none;color:#fff;font-size:.9rem;font-weight:500;padding:.5rem 1rem;border-radius:2rem;cursor:pointer;transition:all .3s ease}.desktop-nav button:hover{background:#3498ff40;transform:translateY(-2px)}.mobile-menu-toggle{display:none;background:none;border:none;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;width:30px;height:30px;z-index:1001}.hamburger{position:relative;width:24px;height:18px;display:flex;flex-direction:column;justify-content:space-between}.hamburger span{width:100%;height:2px;background:#fff;border-radius:1px;transition:all .3s ease;transform-origin:center}.hamburger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.hamburger.active span:nth-child(2){opacity:0}.hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(7px,-6px)}.mobile-nav{position:absolute;top:100%;left:0;right:0;background:#0f1419fa;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(52,152,255,.3);display:none;flex-direction:column;padding:1rem 0;transform:translateY(-100%);opacity:0;visibility:hidden;transition:all .3s ease}.mobile-nav.open{transform:translateY(0);opacity:1;visibility:visible}.mobile-nav button{background:none;border:none;color:#fff;font-size:1rem;font-weight:500;padding:1rem 2rem;text-align:left;cursor:pointer;transition:all .3s ease;border-bottom:1px solid rgba(52,152,255,.1)}.mobile-nav button:hover{background:#3498ff26;padding-left:2.5rem}.mobile-nav button:last-child{border-bottom:none}.section{min-height:100vh;width:100%;display:flex;align-items:center;justify-content:center;padding:6rem 5% 2rem;position:relative;background:#0f1419}@media (min-width: 1440px){.section{padding:6rem 8% 2rem}}@media (min-width: 1920px){.section{padding:6rem 10% 2rem}}@media (min-width: 2560px){.section{padding:6rem 12% 2rem}}.section:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 30% 50%,rgba(52,152,255,.08) 0%,transparent 50%);pointer-events:none}.hero-section{background:linear-gradient(135deg,#0f1419,#1a1f2e,#0f1419);position:relative;overflow:hidden}.hero-section:after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 20%,rgba(52,152,255,.04) 0%,transparent 60%),radial-gradient(circle at 80% 80%,rgba(100,181,246,.03) 0%,transparent 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text){.hero-title{color:#74b9ff!important;background:none!important;-webkit-text-fill-color:unset!important}}.hero-title-en{font-size:2rem;font-weight:600;color:#81c7ff;background:linear-gradient(45deg,#81c7ff,#74b9ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:.5rem 0 1rem;letter-spacing:3px;opacity:.95;text-shadow:0 0 20px rgba(129,199,255,.3)}@supports not (-webkit-background-clip: text){.hero-title-en{color:#81c7ff!important;background:none!important;-webkit-text-fill-color:unset!important}}.hero-role{font-size:1.5rem;font-weight:400;color:#64b5f6;margin:0}.hero-contact{font-size:1.1rem;color:#fff;margin:.5rem 0}.hero-link{display:inline-block;background:linear-gradient(45deg,#3498ff,#64b5f6);color:#fff;padding:1rem 2rem;border-radius:3rem;font-weight:600;text-decoration:none;transition:all .3s ease;box-shadow:0 4px 15px #3498ff59,0 0 20px #3498ff33;margin:1rem .5rem;position:relative;overflow:hidden}.hero-github{display:inline-block;background:linear-gradient(45deg,#333,#666);color:#fff;padding:1rem 2rem;border-radius:3rem;font-weight:600;text-decoration:none;transition:all .3s ease;box-shadow:0 4px 15px #0000004d,0 0 15px #64b5f61a;margin:1rem .5rem;position:relative;overflow:hidden}.hero-link:hover{transform:translateY(-3px);box-shadow:0 8px 25px #3498ff73,0 0 30px #3498ff4d}.hero-github:hover{transform:translateY(-3px);box-shadow:0 8px 25px #0006,0 0 25px #64b5f633;background:linear-gradient(45deg,#444,#777)}.hero-qr{position:relative}.qr-img{width:150px;height:150px;border-radius:1.5rem;background:#fff;padding:1rem;box-shadow:0 8px 32px #0000004d;border:2px solid rgba(79,140,255,.3)}.hero-section{margin:2rem 0 4rem}.logo-container{margin-bottom:2rem}.logo{height:8em;padding:1.5em;will-change:filter;transition:all .3s ease;border-radius:50%;background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.logo:hover{filter:drop-shadow(0 0 3em #61dafbaa);transform:scale(1.1);background:#fff3}.gradient-title{font-size:3.5rem;font-weight:700;background:linear-gradient(45deg,#ff6b6b,#4ecdc4,#45b7d1,#96ceb4);background-size:300% 300%;-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:gradient-shift 3s ease-in-out infinite;margin:1rem 0;text-shadow:0 4px 8px rgba(0,0,0,.3)}.subtitle{font-size:1.2rem;opacity:.9;margin-bottom:2rem;font-weight:300;letter-spacing:.5px}@keyframes gradient-shift{0%,to{background-position:0% 50%}50%{background-position:100% 50%}}@keyframes logo-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (prefers-reduced-motion: no-preference){a:nth-of-type(2) .logo{animation:logo-spin infinite 20s linear}}.card{padding:2em;background:#1a1f3ab3;border-radius:1.5rem;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(79,140,255,.2);box-shadow:0 8px 32px #0000004d;transition:transform .3s ease}.card:hover{transform:translateY(-5px);box-shadow:0 12px 40px #0003}.card button{background:linear-gradient(45deg,#ff6b6b,#4ecdc4);border:none;padding:12px 24px;border-radius:25px;color:#fff;font-weight:600;cursor:pointer;transition:all .3s ease;font-size:1rem}.card button:hover{transform:scale(1.05);box-shadow:0 5px 15px #0003}.read-the-docs{color:#ffffffb3;font-size:.9rem;margin-top:2rem}.section-content{max-width:100%;width:100%;z-index:1;position:relative;padding:0 2rem}@media (min-width: 1440px){.section-content{padding:0 4rem}}@media (min-width: 1920px){.section-content{padding:0 6rem}}@media (min-width: 2560px){.section-content{max-width:2400px;margin:0 auto;padding:0 8rem}}.card{background:#1e2a3abf;border-radius:1.5rem;padding:3rem;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(52,152,255,.25);box-shadow:0 8px 32px #0000004d;margin:2rem 0}.section-title{font-size:3rem;font-weight:700;text-align:center;margin-bottom:2rem;background:linear-gradient(45deg,#3498ff,#64b5f6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.about{display:flex;align-items:center;justify-content:center;gap:3rem;max-width:100%;width:100%;padding:0}@media (min-width: 1200px){.about{gap:4rem}.profile-img{width:250px;height:250px}.about-text h2{font-size:3rem}.about-text p{font-size:1.3rem}}@media (min-width: 1600px){.about{gap:5rem}.profile-img{width:300px;height:300px}.about-text h2{font-size:3.5rem}.about-text p{font-size:1.4rem}}.profile-img{width:200px;height:200px;border-radius:50%;border:4px solid rgba(79,140,255,.3);box-shadow:0 8px 32px #0000004d;object-fit:cover}.about-text{flex:1}.about-text h2{font-size:2.5rem;margin-bottom:1.5rem;color:#3498ff}.about-text p{font-size:1.2rem;line-height:1.8;color:#64b5f6}.skills{max-width:100%;width:100%;text-align:center;padding:0}.skills-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1.5rem;list-style:none;margin-top:2rem;width:100%}@media (min-width: 768px){.skills-list{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:2rem}}@media (min-width: 1200px){.skills-list{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2.5rem}}@media (min-width: 1600px){.skills-list{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:3rem}}.skills-list li{background:linear-gradient(45deg,#3498ff40,#64b5f626);padding:1.5rem;border-radius:1rem;font-weight:600;transition:all .3s ease;border:1px solid rgba(52,152,255,.25)}.skills-list li:hover{transform:translateY(-5px);box-shadow:0 8px 25px #3498ff59}.experience{max-width:100%;width:100%;padding:0}.experience-grid{display:grid;grid-template-columns:1fr;gap:2rem;width:100%}@media (min-width: 1200px){.experience-grid{grid-template-columns:repeat(auto-fit,minmax(500px,1fr));gap:2.5rem}}.exp-item{background:#1e2a3a99;padding:2.5rem;border-radius:1.5rem;margin:2rem 0;border-left:4px solid #3498ff;transition:all .3s ease}.exp-item:hover{transform:translate(10px);box-shadow:0 8px 32px #3498ff40}.exp-item h3{font-size:1.5rem;color:#3498ff;margin-bottom:.5rem}.exp-item span{color:#64b5f6;font-size:.9rem;font-weight:500}.exp-item ul{margin-top:1rem;padding-left:1.5rem}.exp-item li{margin:.5rem 0;color:#fff;line-height:1.6}.projects{max-width:100%;width:100%;padding:0}.projects ul{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;margin-top:2rem}.projects li{background:linear-gradient(135deg,#3498ff26,#64b5f614);padding:2rem;border-radius:1.5rem;border:1px solid rgba(52,152,255,.25);transition:all .3s ease;font-size:1.1rem;font-weight:500}.projects li:hover{transform:translateY(-10px);box-shadow:0 15px 40px #3498ff40}.projects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:2rem;margin-top:2rem;padding:0;width:100%}@media (min-width: 768px){.projects-grid{grid-template-columns:repeat(auto-fit,minmax(400px,1fr));gap:2.5rem}}@media (min-width: 1200px){.projects-grid{grid-template-columns:repeat(auto-fit,minmax(450px,1fr));gap:3rem}}@media (min-width: 1600px){.projects-grid{grid-template-columns:repeat(auto-fit,minmax(500px,1fr));gap:3rem}}@media (min-width: 2000px){.projects-grid{grid-template-columns:repeat(auto-fit,minmax(550px,1fr));gap:3.5rem}}.project-card{background:#1e2a3acc;border-radius:1.5rem;overflow:hidden;border:1px solid rgba(52,152,255,.25);transition:all .3s ease;box-shadow:0 8px 32px #0000004d}.project-card:hover{transform:translateY(-10px);box-shadow:0 20px 40px #3498ff33;border-color:#3498ff66}.project-image{position:relative;height:350px;overflow:hidden}.project-image img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}.project-card:hover .project-image img{transform:scale(1.05)}.project-period{position:absolute;top:1rem;right:1rem;background:#3498ffe6;color:#fff;padding:.5rem 1rem;border-radius:1rem;font-size:.85rem;font-weight:600;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.project-content{padding:2rem}.project-title{font-size:1.4rem;font-weight:700;color:#3498ff;margin-bottom:1rem;line-height:1.3}.project-description{font-size:1rem;color:#64b5f6;margin-bottom:1.5rem;line-height:1.6}.project-technologies{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.5rem}.tech-tag{background:linear-gradient(45deg,#3498ff33,#64b5f61a);color:#81c7ff;padding:.4rem .8rem;border-radius:1rem;font-size:.85rem;font-weight:500;border:1px solid rgba(52,152,255,.3)}.project-highlights{list-style:none;padding:0;margin:0}.project-highlights li{color:#fff;font-size:.95rem;line-height:1.6;margin-bottom:.8rem;padding-left:1.2rem;position:relative}.project-highlights li:before{content:"▸";color:#3498ff;font-weight:700;position:absolute;left:0}.contact{max-width:100%;width:100%;text-align:center;padding:0}.contact p{font-size:1.2rem;margin:1rem 0;color:#64b5f6}.contact a{color:#3498ff;text-decoration:none;font-weight:600;transition:all .3s ease}.contact a:hover{color:#64b5f6;text-shadow:0 0 10px rgba(52,152,255,.6)}@media (min-width: 1200px){.contact p{font-size:1.4rem}}@media (min-width: 1600px){.contact p{font-size:1.5rem}}.section-divider{width:100%;height:1px;background:linear-gradient(90deg,transparent 0%,rgba(52,152,255,.5) 20%,rgba(100,181,246,.8) 50%,rgba(52,152,255,.5) 80%,transparent 100%);margin:4rem 0 2rem;position:relative}.section-divider:before{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:8px;height:8px;background:linear-gradient(45deg,#3498ff,#64b5f6);border-radius:50%;box-shadow:0 0 20px #3498ff99}.section-divider.hero-divider{margin:2rem 0}.section-divider-alt{display:flex;align-items:center;justify-content:center;margin:4rem 0 2rem;opacity:.6}.section-divider-alt:before,.section-divider-alt:after{content:"";flex:1;height:1px;background:linear-gradient(90deg,transparent 0%,rgba(52,152,255,.4) 50%,transparent 100%)}.section-divider-alt span{padding:0 2rem;color:#64b5f6;font-size:1.5rem;opacity:.7}@media (max-width: 768px){.mobile-menu-toggle{display:flex}.desktop-nav{display:none}.mobile-nav{display:flex}.nav-brand{font-size:1rem}.nav-bar{height:50px;padding:.75rem 1rem}.section{padding:3.5rem 1rem 2rem;min-height:calc(100vh - 50px)}.hero-section{min-height:100vh;padding-top:50px}.hero-title{font-size:2.5rem;line-height:1.2}.hero-title-en{font-size:1.4rem}.header{padding:2rem 1rem}.hero-links{display:flex;flex-direction:column;gap:1rem;align-items:center}.about{flex-direction:column;text-align:center}.projects-grid{grid-template-columns:1fr;gap:2rem;padding:0}.project-card{margin:0 .5rem}.project-content{padding:1.5rem}.project-title{font-size:1.2rem}}@media (max-width: 480px){.nav-brand{font-size:.9rem}.nav-bar{padding:.5rem 1rem;height:45px}.section{padding:3rem .5rem 1.5rem}.hero-section{padding-top:45px}.hero-title{font-size:2rem}.mobile-nav button{padding:.875rem 1rem;font-size:.95rem}}@media (hover: none) and (pointer: coarse){.mobile-nav button{min-height:44px;padding:1rem 2rem}.mobile-menu-toggle{min-width:44px;min-height:44px;padding:7px}.desktop-nav button{min-height:44px}}@media (min-width: 1024px){.desktop-nav{gap:2rem}.nav-brand{font-size:1.3rem}.nav-bar{padding:1rem 3rem;height:70px}.section{padding:5rem 5% 2rem}}@media (max-width: 768px) and (orientation: landscape){.hero-section{min-height:100vh}.nav-bar{height:45px}.section{padding:3rem 1rem 1.5rem}}