body {
    background: linear-gradient(135deg, #232526 0%, #3a6186 100%);
    min-height: 100vh;
    margin: 0;
    font-family: 'Montserrat', 'Pretendard', Arial, sans-serif;
    color: #fff;
}
.center-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}
.glass-card {
    background: rgba(30, 30, 40, 0.55);
    border-radius: 32px;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.25);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1.5px solid rgba(255,255,255,0.18);
    padding: 48px 32px 32px 32px;
    max-width: 370px;
    text-align: center;
    margin: 24px;
}
.logo-img {
    width: 120px;
    margin-bottom: 32px;
    filter: drop-shadow(0 0 12px #00eaff99);
    transition: transform 0.2s;
}
.logo-img:hover {
    transform: scale(1.08) rotate(-6deg);
}
.erin {
    color: #00FF40;
    font-weight: 700;
    text-shadow: 0 0 8px #00FF4099, 0 2px 8px #fff3;
}
.cta-btn {
    margin-top: 32px;
    padding: 16px 40px;
    background: linear-gradient(90deg, #00FF40 0%, #00EFFF 60%, #6f00ff 100%);
    color: #232526;
    font-weight: bold;
    font-size: 1.15rem;
    border: none;
    border-radius: 24px;
    box-shadow: 0 4px 16px #00FF4055;
    cursor: pointer;
    transition: background 0.2s, transform 0.12s;
}
.cta-btn:hover {
    background: linear-gradient(90deg, #6f00ff 0%, #00EFFF 40%, #00FF40 100%);
    transform: scale(1.07);
}

.slogan-main {
    font-size: 2.1rem;
    font-weight: 900;
    letter-spacing: 1.5px;
    margin-bottom: 10px;
    line-height: 1.18;
    color: #fff;
    text-shadow: 0 0 16px #00FF4088, 0 2px 8px #fff3;
    animation: fadeUp 1s cubic-bezier(.4,2,.6,1) 0.1s both;
}
.slogan-main .erin {
    color: #00FF40;
    text-shadow: 0 0 16px #00FF40, 0 2px 8px #fff3;
    filter: brightness(1.2);
}
.slogan-sub {
    font-size: 1.08rem;
    font-weight: 500;
    color: #c9eaff;
    margin-bottom: 4px;
    letter-spacing: 0.5px;
    line-height: 1.45;
    animation: fadeUp 1.1s cubic-bezier(.4,2,.6,1) 0.2s both;
}
.slogan-sub .erin {
    color: #00FF40;
    font-weight: 700;
    text-shadow: 0 0 8px #00FF4099;
}
.slogan-desc {
    font-size: 1.01rem;
    color: #b2ffda;
    font-weight: 400;
    margin-top: 10px;
    margin-bottom: 0;
    line-height: 1.5;
    animation: fadeUp 1.2s cubic-bezier(.4,2,.6,1) 0.3s both;
}
@keyframes fadeUp {
    0% { opacity: 0; transform: translateY(30px);}
    100% { opacity: 1; transform: translateY(0);}
}
@media (max-width: 600px) {
    .glass-card {
        padding: 32px 8vw 24px 8vw;
        max-width: 98vw;
    }
    .logo-img {
        width: 88px;
    }
    .slogan-main {font-size: 1.3rem;}
    .slogan-sub {font-size: 0.98rem;}
    .slogan-desc {font-size: 0.93rem;}
}



/* .navbar {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #141414;
  }
  
  li {
    float: left;
  }
  
  .navmenu a, .dropbtn, .dropdown-content a {
    display: inline-block;
    color: #00FF40;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
  }
  
  .navmenu a:hover, .dropdown:hover .dropbtn, .download-file:hover {
    background-color: #00FF40;
    color: #141414;
  }
  
  li.dropdown {
    display: inline-block;
  }
  
  .dropdown-content {
    display: none;
    position: absolute;
    background-color: #00FF40;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
  }
  
  .dropdown-content a {
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    text-align: left;
  }
  
  .dropdown-content a:hover {
  	background-color: #ccc;
  }
  
  .dropdown:hover .dropdown-content {
    display: block;
  }
  
  .download-file {
  	display: inline-block;
	width: 96%;
	padding: 5px;
  	box-shadow: 0 1px 3px;
  	margin: 3px;
  	background-color: #394246;
  }
  
  .download-file a {
  	padding: 5px 38%;
  	font-size: 20px;
  	color: #ffffff;
  	text-align: center;
  	text-decoration: none;
  }*/
  
 /* The sidebar menu */
/* .sidenav {
  height: 100%; 
  width: 250px; 
  position: fixed;
  z-index: 1;
  top: 0;
  left: 0;
  background-color: #111; 
  overflow-x: hidden;
  padding-top: 10px;
} */

/* The navigation menu links */
/* .sidenav a {
  padding: 3px 7px 3px 6px;
  text-decoration: none;
  font-size: 10px;
  color: #818181;
  display: block;
} */

/* When you mouse over the navigation links, change their color */
/* .sidenav a:hover {
  color: #f1f1f1;
} */

/* Style page content */
/* .main {
  margin-left: 160px;
  padding: 5px 10px;
} */

/* On smaller screens, where height is less than 450px, change the style of the sidebar (less padding and a smaller font size) */
/* @media screen and (max-height: 450px) {
  .sidenav {padding-top: 15px;}
  .sidenav a {font-size: 18px;}
} */