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

html {
    scrollbar-gutter: stable;
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + 1.5rem);
    background: var(--color-page);
}

body {
    min-height: 100vh;
    margin: 0;
    display: flex;
    flex-direction: column;
    overflow-wrap: break-word;
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-page);
    transition: color var(--transition-normal), background-color var(--transition-normal);
}

body.nav-open,
body.media-open {
    overflow: hidden;
}

main {
    min-width: 0;
    flex: 1;
    width: 100%;
}

main > section,
.content-section {
    min-width: 0;
    width: min(calc(100% - 3rem), var(--content-width));
    margin-inline: auto;
    scroll-margin-top: 0.5rem;
}

section section {
    scroll-margin-top: 0.5rem;
}

img,
svg,
video {
    max-width: 100%;
}

img {
    display: block;
    height: auto;
}

/* Let nested grid/flex content shrink; wide tables own their scroll area. */
section,
article {
    min-width: 0;
}

h1,
h2,
h3,
h4 {
    line-height: 1.2;
    text-wrap: balance;
}

p {
    margin-top: 0;
    text-align: justify;
}

a {
    color: var(--color-primary);
    text-underline-offset: 0.18em;
}

a:hover {
    color: var(--color-primary-hover);
}

button,
select {
    font: inherit;
}

button,
summary,
select {
    -webkit-tap-highlight-color: transparent;
}

:focus-visible {
    outline: 0.2rem solid var(--color-focus);
    outline-offset: 0.2rem;
}

code {
    padding: 0.15em 0.35em;
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.93em;
    background: var(--code-background);
}

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

.skip-link {
    position: fixed;
    top: 0.5rem;
    left: 0.5rem;
    z-index: 5000;
    padding: 0.65rem 1rem;
    border-radius: var(--radius-md);
    color: var(--color-on-primary);
    background: var(--color-primary);
    transform: translateY(-160%);
    transition: transform var(--transition-fast);
}

.skip-link:focus {
    transform: translateY(0);
}

.fade-out {
    opacity: 0;
}

.spacer-1 {
    height: 1rem;
}

.spacer-2 {
    height: 2rem;
}

@media (max-width: 48rem) {
    main > section,
    .content-section {
        width: min(calc(100% - 2rem), var(--content-width));
    }

    p {
        text-align: left;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}