:root {
    color-scheme: light;
    --background: #f7f8fa;
    --surface: #ffffff;
    --surface-muted: #f1f4f8;
    --text: #172033;
    --muted: #5f6b7a;
    --border: #d9dee7;
    --accent: #0b6bcb;
    --accent-strong: #084c8f;
    --code: #101828;
    --code-surface: #111827;
    --quote: #fff7ed;
    --quote-border: #f59e0b;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-block-size: 100vh;
    color: var(--text);
    background: var(--background);
    font-family:
        Inter,
        ui-sans-serif,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        'Segoe UI',
        sans-serif;
    line-height: 1.6;
}

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

a:hover {
    color: var(--accent-strong);
}

.container {
    inline-size: min(1120px, calc(100% - 32px));
    margin-inline: auto;
}

.site-header {
    border-block-end: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.92);
}

.header-layout {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
    justify-content: space-between;
    padding-block: 18px;
}

.brand {
    color: var(--text);
    font-weight: 760;
    text-decoration: none;
}

.nav {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.nav a {
    border-radius: 8px;
    padding: 6px 10px;
    color: var(--muted);
    text-decoration: none;
}

.nav a:hover,
.nav a:focus-visible {
    color: var(--text);
    background: var(--surface-muted);
}

.hero {
    padding-block: 56px 36px;
}

.home-hero {
    max-inline-size: 860px;
}

.eyebrow,
.category-label {
    margin: 0 0 12px;
    color: var(--accent);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

h1 {
    margin: 0;
    max-inline-size: 900px;
    font-size: clamp(36px, 6vw, 64px);
    line-height: 1.04;
}

.lead {
    max-inline-size: 760px;
    margin: 18px 0 0;
    color: var(--muted);
    font-size: 19px;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-block-start: 28px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-block-size: 44px;
    border: 1px solid var(--accent);
    border-radius: 8px;
    padding-inline: 18px;
    color: #ffffff;
    background: var(--accent);
    font-weight: 700;
    text-decoration: none;
}

.button:hover,
.button:focus-visible {
    color: #ffffff;
    background: var(--accent-strong);
}

.button-secondary {
    color: var(--accent);
    background: transparent;
}

.button-secondary:hover,
.button-secondary:focus-visible {
    color: var(--accent-strong);
    background: #e9f2ff;
}

.category-section {
    margin-block: 24px 44px;
}

.category-section h2 {
    margin: 0 0 16px;
    font-size: 26px;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

.card {
    display: grid;
    gap: 10px;
    min-block-size: 190px;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    color: inherit;
    background: var(--surface);
    text-decoration: none;
}

.card:hover,
.card:focus-visible {
    border-color: var(--accent);
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

.card h3 {
    margin: 0;
    font-size: 22px;
    line-height: 1.25;
}

.card p {
    margin: 0;
    color: var(--muted);
}

.card-category {
    color: var(--accent);
    font-size: 13px;
    font-weight: 700;
}

.page-layout {
    padding-block: 38px 70px;
}

.markdown {
    max-inline-size: 880px;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: clamp(20px, 5vw, 42px);
    background: var(--surface);
}

.markdown h1,
.markdown h2,
.markdown h3,
.markdown h4 {
    margin-block: 1.55em 0.55em;
    line-height: 1.2;
}

.markdown h1:first-child,
.markdown .category-label + h1 {
    margin-block-start: 0;
}

.markdown h1 {
    font-size: clamp(32px, 5vw, 48px);
}

.markdown h2 {
    border-block-start: 1px solid var(--border);
    padding-block-start: 1em;
    font-size: 30px;
}

.markdown h3 {
    font-size: 23px;
}

.markdown h4 {
    font-size: 19px;
}

.markdown .header-anchor {
    margin-left: 0.35em;
    color: var(--accent);
    opacity: 0;
    text-decoration: none;
    transition: opacity 120ms ease;
}

.markdown :is(h1, h2, h3, h4, h5, h6):hover .header-anchor,
.markdown :is(h1, h2, h3, h4, h5, h6):focus-within .header-anchor,
.markdown .header-anchor:focus-visible {
    opacity: 1;
}

.markdown p,
.markdown ul,
.markdown ol {
    margin-block: 0.8em;
}

.markdown li + li {
    margin-block-start: 0.25em;
}

.markdown table {
    display: block;
    inline-size: 100%;
    overflow-x: auto;
    border-collapse: collapse;
    margin-block: 1.2em;
}

.markdown th,
.markdown td {
    border: 1px solid var(--border);
    padding: 10px 12px;
    text-align: start;
    vertical-align: top;
}

.markdown th {
    background: var(--surface-muted);
}

.markdown :not(pre) > code {
    border-radius: 5px;
    padding: 2px 5px;
    color: var(--code);
    background: var(--surface-muted);
    font-size: 0.92em;
}

.markdown pre {
    overflow-x: auto;
    border-radius: 8px;
    padding: 16px;
    color: #e5e7eb;
    background: var(--code-surface);
}

.markdown pre code {
    color: inherit;
    background: transparent;
}

.hljs-keyword,
.hljs-selector-tag,
.hljs-title.function_ {
    color: #93c5fd;
}

.hljs-string,
.hljs-attr,
.hljs-template-tag {
    color: #86efac;
}

.hljs-number,
.hljs-literal {
    color: #fbbf24;
}

.hljs-comment,
.hljs-quote {
    color: #9ca3af;
}

.hljs-built_in,
.hljs-type,
.hljs-title.class_ {
    color: #fca5a5;
}

.markdown blockquote {
    margin-inline: 0;
    border-inline-start: 4px solid var(--quote-border);
    border-radius: 0 8px 8px 0;
    padding: 12px 16px;
    background: var(--quote);
}

.markdown img {
    max-inline-size: 100%;
}

@media (max-width: 680px) {
    .header-layout {
        align-items: flex-start;
    }

    .nav {
        inline-size: 100%;
    }

    .hero {
        padding-block-start: 36px;
    }

    .markdown {
        border-inline: 0;
        border-radius: 0;
        margin-inline: -16px;
    }
}