@font-face {font-family:'CustomFont';src:url('../asset/font.woff2') format('woff2');font-weight:normal;font-style:normal;font-display:swap;} :root {--color-primary:#1f1f1f;--color-secondary:#4b5563;--color-accent:#ff8e1d;--color-accent-hover:#e67e19;--color-bg:#ffffff;--color-surface:#f9fafb;--color-text-main:#1f1f1f;--color-text-muted:#475569;--color-border:#e5e7eb;--font-heading:'CustomFont',system-ui,-apple-system,sans-serif;--font-body:'CustomFont',system-ui,-apple-system,sans-serif;--spacing-sm:0.5rem;--spacing-md:1rem;--spacing-lg:2rem;--spacing-xl:4rem;--shadow-sm:0 1px 3px rgba(0,0,0,0.1);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.1),0 2px 4px -1px rgba(0,0,0,0.06);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -2px rgba(0,0,0,0.05);--radius-md:0.5rem;--radius-lg:1rem;--radius-full:9999px;--transition:all 0.3s ease;} *,*::before,*::after {box-sizing:border-box;margin:0;padding:0;} body {font-family:'CustomFont','Pretendard',-apple-system,BlinkMacSystemFont,system-ui,Roboto,'Helvetica Neue','Segoe UI','Apple SD Gothic Neo','Noto Sans KR','Malgun Gothic','Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol',sans-serif;color:var(--color-text-main);background-color:#ffffff;line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased;} h1,h2,h3,h4,h5,h6 {font-family:var(--font-heading);font-weight:700;line-height:1.2;margin-bottom:var(--spacing-md);color:var(--color-primary);} a {text-decoration:none;color:inherit;transition:var(--transition);} ul {list-style:none;} .container {width:90%;max-width:1200px;margin:0 auto;padding:0 var(--spacing-md);transition:width 0.4s cubic-bezier(0.4,0,0.2,1),max-width 0.4s cubic-bezier(0.4,0,0.2,1),padding 0.4s cubic-bezier(0.4,0,0.2,1);} .section {padding:var(--spacing-xl) 0;} .btn {display:inline-block;padding:0.75rem 1.5rem;border-radius:var(--radius-md);font-weight:600;cursor:pointer;border:none;} .btn-primary {background-color:var(--color-accent);color:white;} .btn-primary:hover {background-color:var(--color-accent-hover);transform:translateY(-2px);} .btn-outline {border:2px solid var(--color-accent);color:var(--color-accent);background:rgba(255,255,255,0.15);backdrop-filter:blur(4px);} .btn-outline:hover {background-color:var(--color-accent);color:white;} .header {position:sticky;top:0;z-index:1000;background:transparent;padding-bottom:0;transition:all 0.4s cubic-bezier(0.4,0,0.2,1);} .header-main-area {background:rgba(255,255,255,0.9);backdrop-filter:blur(10px);border-bottom:1px solid #cbd5e1;box-shadow:0 2px 4px rgba(0,0,0,0.05);padding:0.5rem 0;position:relative;z-index:1001;transition:all 0.4s cubic-bezier(0.4,0,0.2,1);} .header.submenu-active {padding-bottom:3.2rem;} .header-top {display:flex;align-items:center;justify-content:space-between;position:relative;padding-bottom:0.5rem;transition:all 0.4s cubic-bezier(0.4,0,0.2,1);} .lab-title {position:absolute;left:50%;transform:translateX(-50%);text-align:center;font-size:clamp(1rem,1.5vw,1.2rem);font-weight:700;color:var(--color-primary);white-space:nowrap;transition:all 0.4s cubic-bezier(0.4,0,0.2,1);opacity:1;visibility:visible;} .header-nav {display:flex;justify-content:center;padding-top:0.5rem;transition:all 0.4s cubic-bezier(0.4,0,0.2,1);} .logo {font-size:1.5rem;font-weight:800;color:var(--color-primary);display:flex;align-items:center;gap:0.5rem;} .logo span {color:var(--color-accent);} .nav-menu {display:flex;gap:clamp(1rem,2.5vw,2rem);align-items:center;justify-content:center;width:100%;transition:all 0.4s cubic-bezier(0.4,0,0.2,1);} @keyframes navItemFade {from {opacity:0;transform:translateY(-5px);} to {opacity:1;transform:translateY(0);}} .nav-link {display:inline-block;min-width:90px;padding:0.5rem 0.75rem;text-align:center;font-weight:500;color:var(--color-text-muted);font-size:clamp(0.95rem,1.2vw,1.05rem);transition:all 0.4s cubic-bezier(0.4,0,0.2,1);animation:navItemFade 0.5s ease forwards;opacity:0;} .nav-menu li:nth-child(1) .nav-link {animation-delay:0.1s;} .nav-menu li:nth-child(2) .nav-link {animation-delay:0.15s;} .nav-menu li:nth-child(3) .nav-link {animation-delay:0.2s;} .nav-menu li:nth-child(4) .nav-link {animation-delay:0.25s;} .nav-menu li:nth-child(5) .nav-link {animation-delay:0.3s;} .nav-link:hover,.nav-link.active {color:var(--color-accent);} .dropdown {display:inline-block;} .dropdown-content {display:flex;justify-content:center;gap:clamp(1rem,2.5vw,2rem);position:absolute;top:100%;left:0;width:100%;background-color:var(--color-surface);border-bottom:1px solid var(--color-border);z-index:10;padding:0;visibility:hidden;max-height:0;opacity:0;overflow:hidden;transform:translateY(-10px) scaleY(0.9);transform-origin:top;transition:all 0.4s cubic-bezier(0.4,0,0.2,1);} .dropdown.active .dropdown-content {max-height:120px;opacity:1;padding:0.8rem 0;transform:translateY(0) scaleY(1);z-index:999;visibility:visible;} .dropdown-content li {list-style:none;} .dropdown-content li a {color:var(--color-text-main);padding:0.5rem 1rem;text-decoration:none;font-size:clamp(0.85rem,1.1vw,0.95rem);font-weight:500;transition:all 0.2s ease;} .dropdown-content li a:hover,.dropdown-content li a.active {color:var(--color-accent);} .lang-toggle {display:flex;align-items:center;position:relative;border:1px solid var(--color-border);padding:0.25rem;border-radius:var(--radius-full);background:var(--color-surface);overflow:hidden;} .lang-slider {position:absolute;top:0.25rem;left:0.25rem;bottom:0.25rem;width:calc(50% - 0.25rem);background-color:var(--color-accent);border-radius:var(--radius-full);transition:transform 0.3s cubic-bezier(0.4,0,0.2,1);z-index:0;} .lang-toggle.en-active .lang-slider {transform:translateX(100%);} .split-layout {display:grid;grid-template-columns:1fr 1fr;gap:3.5rem;align-items:center;transition:all 0.4s cubic-bezier(0.4,0,0.2,1);} @media (max-width:900px) {.split-layout {grid-template-columns:1fr;gap:2.5rem;}} .grid {display:grid;--grid-cols:3;--card-width:340px;--grid-gap:2rem;gap:var(--grid-gap);justify-content:center;justify-items:center;transition:transform 0.3s ease,box-shadow 0.3s ease,border-color 0.3s ease;margin:0 auto;width:100%;grid-template-columns:repeat(var(--grid-cols),minmax(0,1fr));max-width:calc((var(--grid-cols) * var(--card-width)) + ((var(--grid-cols) - 1) * var(--grid-gap)));} .grid>* {width:100%;max-width:var(--card-width);} .cols-4 {--grid-cols:4;--card-width:260px;--grid-gap:1.5rem;} @media (max-width:1200px) and (min-width:901px) {.grid {--card-width:280px;--grid-gap:1.5rem;} .grid.cols-4 {--card-width:200px;--grid-gap:1rem;}} @media (max-width:900px) {.grid {--grid-cols:2;--card-width:340px;}} @media (max-width:600px) {.grid {--grid-cols:1;--card-width:100%;max-width:400px;grid-template-columns:1fr;}} .lang-btn {padding:0.25rem 0.75rem;border-radius:var(--radius-full);font-size:0.8rem;font-weight:600;cursor:pointer;color:var(--color-text-muted);transition:color 0.3s ease;position:relative;z-index:2;background:transparent !important;border:none;flex:1;text-align:center;} .lang-btn.active {color:white !important;} .main {min-height:85vh;display:flex;align-items:center;justify-content:center;text-align:center;position:relative;overflow:hidden;padding:6rem 1rem;background:radial-gradient(circle at 50% 30%,#fff7ed 0%,transparent 60%),linear-gradient(to bottom,#ffffff 0%,#f9fafb 100%);} .main-video-bg {position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);min-width:100%;min-height:100%;width:auto;height:auto;z-index:0;filter:blur(6px) brightness(0.5);opacity:1;object-fit:cover;pointer-events:none;} iframe.main-video-bg {width:100vw;height:56.25vw;min-height:100vh;min-width:177.77vh;} .main:has(.main-video-bg) .main-overlay {position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 50% 30%,rgba(255,247,237,0.1) 0%,transparent 60%),linear-gradient(to bottom,rgba(0,0,0,0) 0%,rgba(31,31,31,0.4) 100%);z-index:1;pointer-events:none;} .main:has(.main-video-bg)::before {display:none;} .main::before {content:'';position:absolute;top:0;left:0;right:0;bottom:0;background-image:radial-gradient(var(--color-border) 1px,transparent 1px);background-size:30px 30px;opacity:0.4;z-index:0;mask-image:linear-gradient(to bottom,black 40%,transparent 100%);} .main .container {position:relative;z-index:1;} @keyframes fadeUp {from {opacity:0;transform:translateY(20px);} to {opacity:1;transform:translateY(0);}} .main h1 {font-size:4rem;margin-bottom:1.5rem;letter-spacing:-0.02em;background:linear-gradient(to right,var(--color-primary) 20%,var(--color-accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;animation:fadeUp 0.8s ease-out forwards;opacity:0;} .main:has(.main-video-bg) h1 {background:linear-gradient(to right,#ffffff 20%,var(--color-accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;filter:drop-shadow(0 2px 4px rgba(0,0,0,0.5));} .main p {font-size:1.35rem;color:var(--color-text-muted);max-width:650px;margin:0 auto 3rem;font-weight:500;line-height:1.6;animation:fadeUp 0.8s ease-out 0.2s forwards;opacity:0;} .main:has(.main-video-bg) p {color:#f1f5f9;} .main-buttons {display:flex;gap:1rem;justify-content:center;animation:fadeUp 0.8s ease-out 0.4s forwards;opacity:0;} .card {background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:clamp(1.5rem,2.5vw,2rem);transition:all 0.5s cubic-bezier(0.4,0,0.2,1);height:100%;display:flex;flex-direction:column;max-width:340px;margin:0;width:100%;box-sizing:border-box;} .card:hover {transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:var(--color-accent);} .publication-card {container-type:inline-size;background:var(--color-surface);border:1px solid var(--color-border);border-radius:12px;padding:1.2rem 2rem;transition:all 0.3s ease;display:flex;flex-direction:column;align-items:stretch;gap:0.8rem;width:100%;max-width:none;box-sizing:border-box;margin-bottom:0.05rem;box-shadow:var(--shadow-sm);} .pub-card-layout {display:flex;flex-direction:row;gap:1.5rem;align-items:flex-start;} .pub-img-wrapper {flex-shrink:0;width:240px;aspect-ratio:4 / 3;border-radius:8px;overflow:hidden;background-color:var(--color-surface);border:1px solid var(--color-border);} .pub-filter-btn {padding:0.5rem 1.5rem;border-radius:var(--radius-full);font-weight:600;font-size:0.95rem;cursor:pointer;background-color:white;border:2px solid var(--color-accent);color:var(--color-accent);transition:all 0.3s ease;} .pub-filter-btn:hover {background-color:rgba(234,88,12,0.1);} .pub-filter-btn.active {background-color:var(--color-accent);color:white;} .pub-img-wrapper img {width:100%;height:100%;object-fit:cover;} .pub-content {flex:1;min-width:0;} .pub-links {display:flex;gap:0.8rem;flex-shrink:0;padding-top:0.8rem;border-top:1px solid var(--color-border);width:100%;justify-content:flex-start;} @media (max-width:768px) {.publication-card {padding:1rem 1.5rem;}} @container (max-width:600px) {.pub-card-layout {flex-direction:column;align-items:flex-start;} .pub-img-wrapper {width:100%;}} .publication-card:hover {border-color:var(--color-accent);box-shadow:var(--shadow-md);transform:translateX(5px);} .footer {background-color:var(--color-primary);color:white;padding:4rem 0 2rem;margin-top:4rem;} .footer-content {display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:3rem;margin-bottom:3rem;} .footer h3 {color:white;margin-bottom:1.5rem;} .footer-link {display:block;color:#cbd5e1;margin-bottom:0.5rem;} .footer-link:hover {color:white;} .copyright {text-align:center;border-top:1px solid rgba(255,255,255,0.1);padding-top:2rem;color:#94a3b8;font-size:0.9rem;} .social-links {display:flex;gap:0.8rem;align-items:center;} .social-links.justify-center {justify-content:center;} .social-links a {color:var(--color-text-muted);font-size:1.2rem;transition:var(--transition);} .social-links a:hover {color:var(--color-accent);transform:translateY(-2px);} .academic-links {display:flex;gap:0.8rem;flex-wrap:wrap;margin-top:0.5rem;} .icon-btn {background:none;border:none;cursor:pointer;color:var(--color-text-muted);font-size:1.2rem;padding:0;transition:var(--transition);} .scroll-to-top {position:fixed;bottom:2rem;right:2rem;width:3rem;height:3rem;background-color:var(--color-accent);color:white;border:none;border-radius:50%;cursor:pointer;box-shadow:0 4px 12px rgba(0,0,0,0.15);z-index:1000;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transform:translateY(20px);transition:all 0.3s cubic-bezier(0.4,0,0.2,1);} .scroll-to-top.visible {opacity:1;visibility:visible;transform:translateY(0);} .scroll-to-top:hover {background-color:var(--color-accent-hover);transform:translateY(-5px);box-shadow:0 6px 16px rgba(0,0,0,0.2);} .scroll-to-top:active {transform:translateY(0);} .scroll-to-top svg {width:24px;height:24px;fill:currentColor;} @media (max-width:768px) {.scroll-to-top {bottom:1.5rem;right:1.5rem;width:2.75rem;height:2.75rem;}} .pagination-container {display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:1rem;margin:2rem 0;} .pagination-btn {display:flex;align-items:center;justify-content:center;width:2.5rem;height:2.5rem;border-radius:50%;border:2px solid var(--color-accent);background-color:transparent;color:var(--color-accent);font-weight:600;cursor:pointer;transition:all 0.3s cubic-bezier(0.4,0,0.2,1);padding:0;} .pagination-btn:hover:not(:disabled) {background-color:var(--color-accent);color:white;transform:translateY(-2px);box-shadow:0 4px 8px rgba(255,142,29,0.3);} .pagination-btn.active {background-color:var(--color-accent);color:white;box-shadow:0 4px 8px rgba(255,142,29,0.3);} .pagination-btn:disabled {opacity:0.3;cursor:not-allowed;border-color:var(--color-border);color:var(--color-text-muted);} .pagination-arrow {font-size:1.2rem;} .pagination-ellipsis {color:var(--color-text-main);font-weight:600;padding:0 0.25rem;} .pagination-side {display:flex;gap:0.5rem;} .pagination-side:last-child {justify-content:flex-end;} .pagination-status {font-size:1rem;color:var(--color-text-main);font-weight:600;text-align:center;white-space:nowrap;} .icon-btn:hover {color:var(--color-accent);transform:translateY(-2px);} .academic-links a {color:var(--color-text-muted);font-size:0.85rem;text-decoration:none;display:flex;align-items:center;gap:0.3rem;transition:color 0.3s ease;border:1px solid #e2e8f0;padding:0.2rem 0.6rem;border-radius:999px;} a.icon-link[href="#"] {display:none;} .academic-links a:hover {color:var(--color-primary);border-color:var(--color-primary);background:#f1f5f9;} @media (max-width:1000px) {.lab-title {opacity:0;visibility:hidden;pointer-events:none;}} @media (max-width:768px) {.header-nav {display:flex;justify-content:flex-start;padding:0.5rem 0;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;width:100%;} .header-nav {scrollbar-width:none;} .nav-menu {display:flex;gap:clamp(0.6rem,2vw,1rem);padding:0 1.5rem;flex-wrap:nowrap;min-width:max-content;margin:0 auto;} .nav-link {width:auto;min-width:0;padding:0.5rem 0.2rem;font-size:1rem;} .main h1 {font-size:2.5rem;} .dropdown-content {gap:clamp(0.5rem,1.5vw,0.8rem);padding:0.5rem 1.5rem;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;justify-content:center;} .dropdown-content::-webkit-scrollbar {display:none;} .dropdown.active .dropdown-content {padding:0.6rem 1rem;} .dropdown-content li a {font-size:0.9rem;white-space:nowrap;padding:0.4rem 0.2rem;}} .toast {visibility:hidden;min-width:200px;margin-left:-100px;background-color:#333;color:#fff;text-align:center;border-radius:4px;padding:10px;position:fixed;z-index:1000;left:50%;bottom:30px;font-size:14px;} .toast.show {visibility:visible;-webkit-animation:fadein 0.5s,fadeout 0.5s 2.5s;animation:fadein 0.5s,fadeout 0.5s 2.5s;} @-webkit-keyframes fadein {from {bottom:0;opacity:0;} to {bottom:30px;opacity:1;}} @keyframes fadein {from {bottom:0;opacity:0;} to {bottom:30px;opacity:1;}} @-webkit-keyframes fadeout {from {bottom:30px;opacity:1;} to {bottom:0;opacity:0;}} @keyframes fadeout {from {bottom:30px;opacity:1;} to {bottom:0;opacity:0;}} .lang-content-fade {opacity:0 !important;transform:translateY(10px) scale(0.98);} .lang-transition-active {transition:opacity 0.4s cubic-bezier(0.4,0,0.2,1),transform 0.4s cubic-bezier(0.4,0,0.2,1) !important;} .title-fade-up {animation:fadeUp 0.6s ease-out forwards;} .cv-btn {display:inline-block;padding:0.4rem 1.2rem;border:2px solid var(--color-accent);background-color:white;color:var(--color-accent);border-radius:var(--radius-full);font-weight:600;font-size:0.9rem;cursor:pointer;transition:all 0.2s ease;text-decoration:none;margin-top:1rem;} .cv-btn:hover:not(.disabled) {background-color:var(--color-accent);color:white;transform:translateY(-2px);box-shadow:0 2px 4px rgba(0,0,0,0.1);} .cv-btn.disabled {border-color:#cbd5e1;color:#64748b;cursor:default;pointer-events:none;}