@font-face {
    font-family: "IBM Plex Sans";
    src: url(/fonts/IBMPlexSans-Regular.otf) format("opentype");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

:root {
    --Blue100: rgb(0, 17, 65);
    --Blue60: rgb(15, 98, 254);
    --Blue10: rgb(237, 245, 255);
    --CoolGray70: rgb(77, 83, 88);
    --CoolGray10: rgb(242, 244, 248);
    --line: rgba(0, 17, 65, 0.12);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

html {
    color-scheme: light;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
    font-size: 1.05rem;
    line-height: 1.55;
    background: var(--Blue10);
    color: var(--Blue100);
}

a {
    color: var(--Blue60);
}

a:hover {
    text-decoration: underline;
}

.skip-link {
    position: absolute;
    left: 0.75rem;
    top: -100%;
    z-index: 10;
    padding: 0.5rem 0.75rem;
    background: var(--Blue100);
    color: var(--CoolGray10);
    text-decoration: none;
}

.skip-link:focus {
    top: 0.75rem;
}

:focus-visible {
    outline: 2px solid var(--Blue60);
    outline-offset: 2px;
}

.site-header {
    background: var(--Blue100);
    color: var(--CoolGray10);
    padding: 1.25rem 1.5rem 1rem;
}

.site-header a {
    color: inherit;
    text-decoration: none;
}

.site-header h1 {
    margin: 0;
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 400;
    letter-spacing: 0.04em;
    line-height: 1.2;
}

.site-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.25rem;
    margin-top: 0.85rem;
    font-size: 0.95rem;
}

.site-nav a {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    border-bottom: 1px solid transparent;
}

.site-nav a[aria-current="page"],
.site-nav a:hover {
    border-bottom-color: currentColor;
}

.site-main {
    flex: 1;
    width: 100%;
    max-width: 42rem;
    padding: 1.75rem 1.5rem 2.5rem;
}

.site-main h2 {
    margin: 0 0 0.75rem;
    font-size: clamp(1.35rem, 3vw, 1.75rem);
    font-weight: 400;
}

.site-main p,
.site-main li {
    color: var(--Blue100);
}

.site-main p {
    margin: 0 0 1rem;
}

.site-main ul {
    margin: 0 0 1rem;
    padding-left: 1.2rem;
}

.lede {
    font-size: 1.15rem;
}

.site-footer {
    padding: 1rem 1.5rem 1.35rem;
    color: var(--CoolGray70);
    font-size: 0.9rem;
    border-top: 1px solid var(--line);
}

.site-footer nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.25rem;
    margin-bottom: 0.4rem;
}

.site-footer p {
    margin: 0;
}

@media (max-width: 800px) {
    .site-header,
    .site-main,
    .site-footer {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .site-nav a {
        padding: 0.15rem 0;
    }
}