* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Montserrat', sans-serif;
            line-height: 1.6;
        }
        
        /*
        html {
            scroll-behavior: smooth;
        }
        */
        .container {
        	width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Navbar */
        .nav-wrapper {
            width: 100%;
            display: flex;
            justify-content: center;
            position: fixed;
            top: 0;
            left: 0;
            z-index: 1000;
            background-color: transparent;
        }

        .nav {
            width: 100%;
            max-width: 1200px; /* 최대 너비 설정 */
            padding: 10px 0;
            transition: background-color 0.3s;
        }

        .nav.scrolled {
        	background-color: rgba(255, 255, 255, 0);
         /* box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); */
        }

        .nav-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: bold;
            color: white;
            text-decoration: none;
        }

        .nav.scrolled .logo {
            color: #333;
        }

        .nav.scrolled .hamburger span {
            background-color: #333;
        }

        .nav-menu {
            display: flex;
            gap: 30px;
        }

        .nav-menu a {
            color: white;
            text-decoration: none;
            transition: color 0.3s;
        }

        .nav.scrolled .nav-menu a {
            color: #333;
        }

        .nav-menu a:hover {
            color: #007bff;
        }

        /* hamburger btn */
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: space-between;
            width: 30px;
            height: 21px;
            cursor: pointer;
            z-index: 1001;
            padding: 0;
            background: none;
            border: none;
        }

        .hamburger span {
            display: block;
            width: 100%;
            height: 3px;
            background-color: #FFF;
            transition: all 0.3s ease;
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }

        /* sidebar menu */
        .sidebar-menu {
            position: fixed;
            top: 0;
            left: -60%;
            width: 60%;
            height: 100vh;
            background: rgba(255, 255, 255, 0.98);
            display: flex;
            flex-direction: column;
            padding-top: 80px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 1000;
        }

        .sidebar-menu.active {
            left: 0;
        }

        .sidebar-menu a {
            font-size: 1.1rem;
            margin: 0rem 1rem;
            padding: 0.8rem 1.5rem;
            text-decoration: none;
            color: #2c3e50;
            transition: all 0.2s ease-in-out;
            border-radius: 8px;
            border-bottom: 1px solid #eee;
        }

        .sidebar-menu a:hover {
            color: #007bff;
            background: rgba(0, 123, 255, 0.05);
            transform: translateX(5px);
        }

        .sidebar-menu a:active {
            background: rgba(0, 123, 255, 0.1);
            transform: translateX(3px);
        }

        /* overlay*/
        .overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            z-index: 998;
        }

        .overlay.active {
            opacity: 1;
            visibility: visible;
        }
    
        /* Hero Section */
        .hero {
            position: relative;
            height: 100vh;
            overflow: hidden;
        }

        .hero-video {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            min-width: 100%;
            min-height: 100%;
            width: auto;
            height: auto;
            z-index: -1;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: rgba(0, 0, 0, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
        }

        /* Hero fade-up */
        .hero-text {
            text-align: left;
        }
        
        .hero-text p,
        .hero-text button {
            opacity: 0;
            transform: translateY(50px);
            transition: all 0.8s cubic-bezier(0.3, 0.8, 0.3, 1);
        }

        .hero-text.show p,
        .hero-text.show button {
            opacity: 1;
            transform: translateY(0);
        }

        .hero-text.show button {
            transition-delay: 0.3s;
        }

        /* Scroll Arrow */
        .scroll-arrow {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            animation: bounce 2s infinite;
        }

        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
            40% { transform: translateY(-30px); }
            60% { transform: translateY(-15px); }
        }

        /* Main Content */
        .section {
            margin: 0 auto;
            max-width: 1200px;
            min-height: 50vh;
            padding: 20px 0;
            display: flex;
            align-items: center;
        }

        .section:nth-child(odd) {
            background-color: #f8f9fa;
        }

        .grid {
            display: grid;
            gap: 20px;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        }
        
        #about .grid {
            display: grid;
            gap: 20px;
            grid-template-columns: repeat(2, 1fr); /* 두 개의 열 */
        }

        /* Cards */
        .card {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s;
            margin-top: 20px;
        }

        .card:hover {
            transform: translateY(-10px);
        }

        .card-img {
            width: 100%;
            height: 230px;
            object-fit: cover;
        }

        .card-body {
            padding: 2px;
        }

        /* Utilities */
        .highlight {
            position: relative;
            display: inline-block;
            z-index: 1;
        }

        .highlight::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 30%;
            background-color: rgba(0, 123, 255, 0.2);
            z-index: -1;
            transform: skewX(-15deg);
        }
        
        /* Button */
        .btn {
            padding: 1px 2px;
            border: none;
            background-color: #007bff;
            color: white;
            border-radius: 5px;
            cursor: pointer;
            transition: background-color 0.3s;
        }

        .btn:hover {
            background-color: #0056b3;
        }

        /* Table */
        table {
            width: 100%;
            border-collapse: collapse;
         }
        th, td {
            padding: 3px;
            border: 1px solid #ddd;
            text-align: center;
            font-size: 12px;
          }
        th {
        	background: linear-gradient(to bottom, #f8f8f8, #e0e0e0);
            font-weight: bold;
            color: #333;
          }
          
          tr:hover {
            background-color: #f1f1f1;
          }

        .center-text {
            text-align: center;
          }
          
        .ss {
            text-decoration: line-through;
          }
          
        /* Footer */
        .footer {
            max-width: 1200px;
        	margin: 0 auto;
            background-color: rgba(255, 255, 255, 0);
            color: black;
            padding: 0px 0;
            text-align: center;
        }

        /*Fade-up */
        .fade-up {
            opacity: 0;
            transform: translateY(50px);
            transition: opacity 0.8s cubic-bezier(0.25, 0.8, 0.25, 1), transform 0.8s cubic-bezier(0.25, 0.8, 0.25, 1); 
            /*transition: all 0.8s cubic-bezier(0.3, 0.8, 0.3, 1);*/
        }
        
        .fade-up.show {
            opacity: 1;
            transform: translateY(0);
        } 
        
        body {
            -webkit-user-select: none;
            -moz-user-select: none;
            -ms-user-select: none;
            user-select: none;
          }
          
        /* Responsive */
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }
            
             .hamburger {
                display: flex;
            }
            
            .hero-text h1 {
                font-size: 2rem;
            }

            .hero-text p {
                font-size: 1rem;
            }
            
            .search-container {
                position: fixed;
                top: 100px;
                right: 5px;
                z-index: 999;
                background: rgba(255, 255, 255, 0.3);
                padding: 6px;
                border-radius: 8px;
                display: flex;
                gap: 10px;
                }
                
            .section {
                padding: 40px 0;
            }
            
            #about .grid {
                grid-template-columns: 1fr;
            }
            
            .container {
                padding: 0 2px;
                width: 100%;
            }
        }
        
        @media (min-width: 768px) {
            .hero-text h1 {
                font-size: 2.5rem;
            }

            .hero-text p {
                font-size: 1.2rem;
            }
	
            .hero {
                width: 100%; 
                max-width: 1200px;
                max-height: 600px;
                margin: 0 auto;
                z-index: 1; 
            }

            .search-container {
                max-width: 1200px;
                margin: 0 auto;
                background: rgba(255, 255, 255, 0);
                padding: 6px;
                border-radius: 6px;
                display: flex;
                gap: 10px;
                z-index: 999;
                }
	
           /* .card-img {
                display: none;
                } */

            .grid {
                grid-template-columns: repeat(1, 1fr);
            }
        }