:root {
    --bg: #ffffff;
    --surface: #fafaf8;
    --ink: #111111;
    --muted: #5f5f5f;
    --line: #e8e6e1;
    --accent: #b8341c;
    --radius: 12px;
    --max: 720px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Helvetica Neue', Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.6;
    font-size: 16px;
}

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

.shell {
    max-width: var(--max);
    margin: 0 auto;
    padding: 2rem 1.25rem 4rem;
}

header.site {
    border-bottom: 1px solid var(--line);
    padding: 1.1rem 1.25rem;
}

header.site .inner {
    max-width: var(--max);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--ink);
    font-weight: 600;
}

.brand-mark {
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 6px;
    background: var(--ink);
    color: #fff;
    display: grid;
    place-items: center;
    font-size: 0.8rem;
    font-weight: 700;
}

nav.site {
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
}

nav.site a {
    text-decoration: none;
    color: var(--muted);
    padding: 0.4rem 0.7rem;
    border-radius: 6px;
    font-size: 0.92rem;
}

nav.site a:hover,
nav.site a.is-active {
    color: var(--ink);
    background: var(--surface);
}

h1 {
    font-size: 1.85rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin: 0 0 0.5rem;
    font-weight: 700;
}

h2 {
    font-size: 1.15rem;
    line-height: 1.3;
    letter-spacing: -0.01em;
    margin: 2rem 0 0.5rem;
    font-weight: 600;
}

h3 {
    font-size: 1rem;
    margin: 1.5rem 0 0.35rem;
    font-weight: 600;
}

p {
    margin: 0 0 1rem;
    color: #2c2c2c;
}

ul {
    margin: 0 0 1rem;
    padding-left: 1.25rem;
}

li {
    margin-bottom: 0.4rem;
}

.lead {
    color: var(--muted);
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
}

.meta {
    color: var(--muted);
    font-size: 0.88rem;
    margin-top: -0.25rem;
    margin-bottom: 1.5rem;
}

hr {
    border: 0;
    border-top: 1px solid var(--line);
    margin: 2.5rem 0;
}

.card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.25rem 1.4rem;
    margin: 1.25rem 0;
}

.card p:last-child { margin-bottom: 0; }

footer.site {
    border-top: 1px solid var(--line);
    padding: 1.5rem 1.25rem;
    color: var(--muted);
    font-size: 0.88rem;
}

footer.site .inner {
    max-width: var(--max);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

footer.site a {
    color: var(--muted);
    text-decoration: none;
    margin-left: 1rem;
}

footer.site a:hover { color: var(--ink); }

@media (max-width: 540px) {
    header.site .inner { flex-direction: column; align-items: flex-start; }
    footer.site .inner { flex-direction: column; align-items: flex-start; }
    footer.site a { margin-left: 0; margin-right: 1rem; }
    h1 { font-size: 1.6rem; }
}