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

body {
    font-family: ui-monospace, 'SF Mono', SFMono-Regular, 'Monaco', 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 14.4px;
    line-height: 125%;
    letter-spacing: -0.03em;
    background-color: #fff;
    color: #262626;
    min-height: 100svh;
    display: flex;
    flex-direction: column;
}

.header-nav {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    margin-top: 40px;
}

.nav-left, .nav-center, .nav-right {
    font-weight: normal;
    cursor: pointer;
}

.nav-center {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    color: #262626;
    text-decoration: none;
    transition: color 0.2s ease;
}

.nav-center:hover {
    color: #999999;
}

.nav-center:visited {
    color: #262626;
}

.main-content {
    width: 100%;
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 60px 20px;
}

.sphere-container {
    display: flex;
    justify-content: center;
    align-items: center;
}

.sphere {
    max-width: 500px;
    width: 35vw;
    min-width: 340px;
    height: auto;
    display: block;
}

.text-section {
    width: 100%;
    padding: 40px 0;
    background-color: #fff;
}

.text-content {
    max-width: 310px;
    min-width: 310px;
    margin: 0 auto;
    text-align: center;
}

.text-content p {
    margin-bottom: 20px;
    color: #999999;
}

.text-content p:last-of-type {
    margin-bottom: 20px;
}

.contact-link {
    cursor: pointer;
    font-weight: normal;
    color: #262626;
    text-decoration: none;
    transition: color 0.2s ease;
}

.contact-link:hover {
    color: #999999;
}

.contact-link:visited {
    color: #262626;
}



@media (max-width: 768px) {
    body {
        font-size: 12.4px;
    }
    
    .header-nav {
        padding: 15px 20px;
    }
    
    .main-content {
        padding: 40px 20px;
    }
    
    .sphere {
        width: 45vw;
        min-width: 340px;
    }
}

@media (min-width: 810px) and (max-width: 1440px) {
    .header-nav {
        margin-top: 48px;
    }
    
    .text-section {
        padding: 48px 0;
    }
}

@media (min-width: 1441px) {
    .header-nav {
        margin-top: 60px;
    }
    
    .text-section {
        padding: 60px 0;
    }
}

@media (max-width: 350px) {
    .text-content {
        min-width: calc(100vw - 40px);
        padding: 0 20px;
    }
}