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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--color-text);
    background: var(--color-background);
    line-height: 1.6;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
textarea,
select {
    font: inherit;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0 0 1rem;
    line-height: 1.08;
    letter-spacing: -0.03em;
}

p {
    margin: 0 0 1rem;
}

ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

:focus-visible {
    /* Accent blue holds ~4.5:1 on the site's predominantly light surfaces;
       the old lime (#D9F25E) was ~1.3:1 on white and effectively invisible. */
    outline: 3px solid var(--theme-accent, #206bc4);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Skip-to-content link: first focusable element, hidden until focused. */
.skip-link {
    position: absolute;
    left: 1rem;
    top: -4rem;
    z-index: 1000;
    background: var(--theme-primary, #0C3B2E);
    color: #fff;
    padding: 0.75rem 1.25rem;
    border-radius: 0.5rem;
    font-weight: 700;
    text-decoration: none;
    transition: top 180ms ease;
}

.skip-link:focus {
    top: 1rem;
}