:root {
    --brand-blue: #01c0f3;
    --brand-blue-dark: #014d66;
    --light-grey: rgba(250, 250, 250, 1);
    --spacing-sm: .5rem;
    --spacing-md: 1rem;
    --radius-pill: 1.875rem;
    --card-gap: 1rem;
}

body {
    font-size: 1.25rem;
    background-color: rgba(240, 240, 240, 1);
    color: black;
    margin: 0 auto;
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6rem;
}

h2 {
    font-size: 1.9rem;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.5rem;
}

a {
    color: var(--brand-blue);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

p {
    color: rgba(75, 75, 75, 1);
}

.content-wrapper {
    box-sizing: border-box;
    max-width: 1000px;
    margin: 5rem auto;
    padding: 0 var(--spacing-md);
}

header {
    margin: 3rem 0 4rem 0;
    text-align: center;
}

header svg {
    width: 8rem;
    height: 8rem;
    margin: 0 auto;
    padding: var(--spacing-md);
    border-radius: 100%;
    background: var(--brand-blue);
    fill: white;
    display: block;
}

.name {
    margin-bottom: 1rem;
    font-size: 2.5rem;
    text-align: center;
}

.tagline {
    color: gray;
    margin: .5rem auto 0 auto;
    font-size: 1.25rem;
    font-style: italic;
    text-align: center;
}

section {
    margin: 7.8125rem 0;
}

.featured-product,
.card-container .card {
    background: white;
    box-sizing: border-box;
    box-shadow: rgba(0, 0, 0, 0.1) 0 .25rem .5rem;
    border: 1px solid var(--light-grey);
    border-radius: .1rem;
}

.featured-product {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.feature-stack {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--card-gap);
    align-items: stretch;
}

.featured-product h2 {
    margin-top: 0;
}

.featured-product p {
    margin-bottom: 1rem;
}

.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    margin-top: auto;
    padding-top: 1rem;
}

.button-row a,
.card-container ul li a {
    display: inline-block;
    background: var(--brand-blue);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-pill);
    margin: .2rem 0;
}

.button-row a:hover,
.button-row a:focus,
.card-container ul li a:focus,
.card-container ul li a:hover {
    background: var(--brand-blue-dark);
    text-decoration: none;
    outline: 0;
}

.card-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--card-gap);
}

.card-container .card {
    padding: 1rem;
}

.card-container p,
.card-container a {
    font-size: 1rem;
}

.card-container ul {
    list-style-type: none;
    padding: 0;
    margin: 1rem 0 0 0;
}

.card-container ul li {
    margin: .25rem 0;
}

.card-container .cover-image {
    width: 100%;
    height: auto;
}

@media (max-width: 992px) {
    .card-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .card-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 939px) {
    .feature-stack {
        grid-template-columns: 1fr;
    }
}

.description {
    color: rgba(100, 100, 100, 1);
    font-size: 1.1rem;
    font-style: italic;
    line-height: 1.8rem;
}

.author-content {
    color: rgba(75, 75, 75, 1);
}

.author-content::after {
    content: "";
    display: block;
    clear: both;
}

.author-content img {
    max-width: 100%;
    float: none;
    margin-left: 0;
}

@media (min-width: 600px) {
    .author-content img {
        float: right;
        margin-left: 1rem;
    }
}

footer {
    margin-top: 5rem;
}

.social-link-container {
    text-align: center;
}

.social-link-container a {
    margin: 0 .4rem;
    display: inline-block;
}

.copyright {
    color: rgba(200, 200, 200, 1);
    font-size: .75rem;
    text-align: center;
}