* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    background-color: #020220;
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    overflow: hidden;
}

.error_container {
    text-align: center;
    padding: 2rem;
    max-width: 600px;
    width: 100%;
    z-index: 10;
}

.error_title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-shadow: 0 0 20px rgba(0, 150, 255, 0.5);
    word-break: keep-all;
}

.error_desc {
    font-size: 1.1rem;
    font-weight: 400;
    color: #a0a0b0;
    line-height: 1.6;
    margin-bottom: 3rem;
    word-break: keep-all;
}

.btn_home {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffffff;
    background: linear-gradient(135deg, #0052d4, #4364f7);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn_home:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 82, 212, 0.4);
}

.bg_circle {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(67, 100, 247, 0.15) 0%, rgba(2, 2, 32, 0) 70%);
    z-index: 1;
}

.bg_circle.one {
    width: 600px;
    height: 600px;
    top: -200px;
    left: -150px;
}

.bg_circle.two {
    width: 800px;
    height: 800px;
    bottom: -300px;
    right: -200px;
}

@media screen and (max-width: 550px) {
    .error_title {
        font-size: 1.5rem;
    }
    .error_desc {
        font-size: 1rem;
    }
    .bg_circle {
        display: none;
    }
}