@charset "utf-8";
/* CSS Document */

.page-margin {
    max-width: 1350px;
    margin: 0 auto;
}

.main-section {
    display: flex;
    margin: 3em auto 5em;
}

.hero-section {
    height: 420px;
}

.hero-section img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 100% 0;
}

.toc-nav {
    position: sticky;
    top: 2rem;
    height: fit-content;
    display: flex;
    flex-direction: column;
    width: 20%;
}

.toc-link {
    text-decoration: none;
    font-family: sans-serif;
    font-size: 14px;
    font-weight: 500;
    color: #333;
    padding: 0.70rem 0 0.70rem 1rem;
    border-left: 3px solid #e0e0e0;
    transition: all 0.2s ease-in-out;
}

.toc-link.active {
    color: #1D98E4;
    border-left-color: #1D98E4;
    font-weight: 700;
}

.toc-link:hover {
    color: #1D98E4;
}

.content {
    width: 80%;
}

.content h1 {
    margin: 0;
}

.content h2 {
    font-size: 22px;
}

.content p {
    font-size: 17px;
    line-height: 22px;
    letter-spacing: 1%;
    width: 70%;
}

#section1 img {
    max-width: 100%;
    margin: 5em 0;
}

#section2,
#section3,
#section4 {
    margin-bottom: 5em;
}

#section3 ul  {
    padding-left: 20px;
    list-style-type: square;
}

#section3 ul li h3 {
    margin-top: 1.5em;
}

#section3 ul li p {
    margin-left: -15px;
}

.card-deck {
    background: #F5F5F7;
    padding: 4em 0;
}

.card-deck-wrap {
    display: flex;
    justify-content: space-between;
}

.card-deck-wrap > p {
    margin: 0;
    font-size: 18px;
    font-weight: bold;
}

.card-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.5em;
}

.card-inner {
    background: #fff;
    padding: 1em;
}

.card-inner h4 {
    margin: 0;
}

.card-deck-wrap .card {
    width: 300px;
}

.card-deck-wrap .card img {
    width: 100%;
}