:root {
    --color-background: #f8fafc;
    --color-background-dark: #1e293b;
    --color-text: #1f2937;
    --color-text-dark: #f3f4f6;
    --color-muted: #4b5563;
    --color-muted-dark: #d1d5db;
    --color-brand: #1e40af;
    --color-brand-light: #60a5fa;
    --color-link: #2563eb;
    --color-link-hover: #0f766e;
    --color-surface-hover: #e5e7eb;
    --color-surface-hover-dark: #4b5563;
    --font-sans: Inter, "Inter var", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --measure: 48rem;
    --wide-measure: 64rem;
}

* {
    box-sizing: border-box;
}

html {
    font-family: var(--font-sans);
    line-height: 1.5;
}

body {
    margin: 0;
    padding: 0 1rem;
    background: var(--color-background);
    color: var(--color-text);
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 160ms ease, background-color 160ms ease;
}

a:hover,
a:focus-visible {
    color: var(--color-brand);
}

img {
    max-width: 100%;
    height: auto;
}

.visually-hidden {
    border: 0;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    white-space: nowrap;
    width: 1px;
}

.site-nav,
.site-footer {
    width: min(100%, var(--wide-measure));
    margin-inline: auto;
}

.site-nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    padding-block: 2.5rem;
}

.site-nav__brand {
    margin-right: 3rem;
    color: var(--color-brand);
    font-size: 1.25rem;
    font-weight: 900;
}

.site-nav__toggle {
    display: none;
    border: 0;
    background: transparent;
    color: inherit;
    line-height: 0;
    padding: 0.35rem;
}

.site-nav__toggle-close {
    display: none;
}

.site-nav__toggle-icon {
    width: 1.5rem;
    height: 1.5rem;
}

.site-nav__links {
    display: flex;
    align-items: center;
    gap: 3rem;
}

.site-nav__link {
    color: var(--color-muted);
}

.site-nav__link.is-active {
    color: var(--color-text);
    font-weight: 600;
}

.site-main {
    position: relative;
    width: min(100%, var(--measure));
    margin: 3rem auto 0;
}

.site-footer {
    padding-block: 9rem;
}

.footer-nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.footer-nav__copyright {
    font-size: 0.875rem;
}

.footer-nav__links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-nav__icon-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    color: currentColor;
}

.footer-nav__icon,
.footer-nav__icon-link svg {
    width: 1.5rem;
    height: 1.5rem;
}

.home-intro,
.page-header,
.term-header,
.article-header {
    margin-bottom: 4rem;
}

.home-intro__title,
.page-title,
.page-header h1,
.term-header h1,
.article-header h1 {
    margin: 0 0 0.5rem;
    color: var(--color-brand);
    font-size: clamp(2.25rem, 5vw, 2.75rem);
    line-height: 1.1;
}

.home-intro__title p {
    margin: 0;
}

.home-intro__subtitle {
    margin: 0;
    color: #111827;
    font-size: 1.25rem;
    font-weight: 600;
}

.article-meta {
    margin-bottom: 0.25rem;
    font-size: 1.125rem;
}

.article-topics a,
.content a {
    color: var(--color-link);
}

.article-topics a:hover,
.content a:hover {
    color: var(--color-link-hover);
}

.article-list__item + .article-list__item {
    margin-top: 4rem;
}

.article-excerpt__title {
    margin: 0;
    font-size: 1.875rem;
    line-height: 1.15;
}

.article-excerpt__title a {
    font-weight: 800;
}

.content {
    font-size: 1.125rem;
    line-height: 1.75;
}

.content--article {
    font-size: clamp(1.125rem, 2.5vw, 1.35rem);
}

.content h1,
.content h2,
.content h3,
.content h4 {
    color: var(--color-brand);
    line-height: 1.2;
}

.content img {
    display: block;
    margin-inline: auto;
    border-radius: 3px;
}

.content pre {
    overflow-x: auto;
    padding: 1rem;
    border-radius: 0.375rem;
    background: #111827;
    color: #e5e7eb;
}

.content code {
    font-size: 0.9em;
}

.compact-list__item {
    margin: 0 0 0.5rem;
    font-size: 1.125rem;
    font-weight: 800;
    line-height: 1.25;
}

.compact-list__link:hover {
    color: var(--color-link-hover);
}

.article-index__item + .article-index__item {
    margin-top: 1.25rem;
}

.article-index__date {
    color: var(--color-muted);
    display: inline-block;
    font-size: 0.95rem;
    font-weight: 500;
    margin-left: 0.75rem;
}

.term-header__eyebrow {
    margin: 0;
    color: var(--color-muted);
    font-weight: 600;
}

.empty-state {
    color: var(--color-link);
    font-size: 1.875rem;
    font-style: italic;
    line-height: 1.2;
}

.pagination {
    display: flex;
    align-items: center;
    margin-top: 6rem;
}

.pagination__link {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem;
}

.pagination__link:hover {
    background: var(--color-surface-hover);
}

.pagination__link--next {
    margin-left: auto;
}

.pagination__icon {
    width: 1.5rem;
    height: 1.5rem;
}

.pagination__icon--left {
    margin-right: 1rem;
}

.pagination__icon--right {
    margin-left: 1rem;
}

@media (max-width: 48rem) {
    body {
        padding-inline: 1.25rem;
    }

    .site-nav {
        padding-block: 2rem;
    }

    .site-nav__toggle {
        display: inline-flex;
    }

    .site-nav__links {
        display: none;
        flex-basis: 100%;
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        padding-top: 1rem;
    }

    .site-nav.is-open .site-nav__links {
        display: flex;
    }

    .site-nav.is-open .site-nav__toggle-open {
        display: none;
    }

    .site-nav.is-open .site-nav__toggle-close {
        display: inline;
    }

    .site-main {
        margin-top: 2rem;
    }

    .site-footer {
        padding-block: 6rem;
    }
}

@media (prefers-color-scheme: dark) {
    body {
        background: var(--color-background-dark);
        color: var(--color-text-dark);
    }

    .site-nav__brand,
    .home-intro__title,
    .page-title,
    .page-header h1,
    .term-header h1,
    .article-header h1,
    .content h1,
    .content h2,
    .content h3,
    .content h4 {
        color: var(--color-brand-light);
    }

    .site-nav__link,
    .term-header__eyebrow,
    .article-index__date {
        color: var(--color-muted-dark);
    }

    .site-nav__link.is-active,
    .home-intro__subtitle {
        color: var(--color-text-dark);
    }

    .pagination__link:hover {
        background: var(--color-surface-hover-dark);
    }
}