/* The site's own look: one stylesheet, no framework, and it follows the reader's colour scheme. */

:root {
    --ink: #1f2328;
    --ink-soft: #59636e;
    --page: #ffffff;
    --band: #f6f8fa;
    --line: #d1d9e0;
    --accent: #0969da;
    --code: #f6f8fa;
}

@media (prefers-color-scheme: dark) {
    :root {
        --ink: #e4e4e6;
        --ink-soft: #9198a1;
        --page: #0d1117;
        --band: #161b22;
        --line: #30363d;
        --accent: #4cb6e8;
        --code: #161b22;
    }
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--page);
    color: var(--ink);
    font: 16px/1.65 Inter, -apple-system, "Segoe UI", system-ui, sans-serif;
    -webkit-text-size-adjust: 100%;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.wrap {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
}

header {
    border-bottom: 1px solid var(--line);
}

header .wrap {
    display: flex;
    align-items: center;
    gap: 20px;
    height: 60px;
}

header .brand {
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--ink);
}

header nav {
    margin-left: auto;
    display: flex;
    gap: 18px;
    font-size: 15px;
}

header nav a {
    color: var(--ink-soft);
}

header nav a[aria-current="page"] {
    color: var(--ink);
    font-weight: 500;
}

.hero {
    padding: 64px 0 40px;
}

.hero h1 {
    font-size: 2.4rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin: 0 0 14px;
}

.hero p {
    font-size: 1.15rem;
    color: var(--ink-soft);
    margin: 0 0 28px;
    max-width: 42rem;
}

.buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.button {
    display: inline-block;
    padding: 9px 18px;
    border-radius: 6px;
    border: 1px solid var(--line);
    font-weight: 500;
}

.button.primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.button.primary:hover {
    text-decoration: none;
    filter: brightness(1.05);
}

section {
    padding: 8px 0 36px;
}

h2 {
    font-size: 1.35rem;
    letter-spacing: -0.01em;
    margin: 32px 0 12px;
}

h3 {
    font-size: 1.05rem;
    margin: 24px 0 8px;
}

ul {
    padding-left: 20px;
}

li {
    margin: 6px 0;
}

pre {
    background: var(--code);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 14px 16px;
    overflow-x: auto;
    font-size: 13.5px;
    line-height: 1.55;
}

code {
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

p code,
li code {
    background: var(--code);
    border-radius: 4px;
    padding: 1px 5px;
    font-size: 0.9em;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    margin-top: 8px;
}

.card {
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 18px;
    background: var(--band);
}

.card h3 {
    margin: 0 0 6px;
}

.card p {
    margin: 0;
    color: var(--ink-soft);
    font-size: 0.95rem;
}

footer {
    border-top: 1px solid var(--line);
    margin-top: 24px;
    padding: 22px 0 40px;
    color: var(--ink-soft);
    font-size: 0.9rem;
}