:root {
    --ink: #172126;
    --muted: #617078;
    --line: #d8e0df;
    --paper: #fbfcfa;
    --accent: #087f8c;
    --accent-dark: #075b65;
    --warm: #f0eee6;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Georgia, 'Times New Roman', serif; line-height: 1.65; }
a { color: var(--accent-dark); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent); }
.shell { width: min(100% - 2rem, 60rem); margin: 0 auto; }
.site-header { border-bottom: 1px solid var(--line); background: rgba(251, 252, 250, .94); }
.header-inner { min-height: 4.75rem; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.site-name { color: var(--ink); font-size: 1.2rem; font-weight: bold; text-decoration: none; letter-spacing: .01em; }
.site-name span { color: var(--muted); font-weight: normal; }
nav { display: flex; gap: 1.4rem; font-family: system-ui, sans-serif; font-size: .78rem; letter-spacing: .06em; text-transform: uppercase; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--accent-dark); }
.intro { padding: 4rem 0 2.5rem; border-bottom: 1px solid var(--line); }
.intro-copy { min-width: 0; }
.intro-copy .lead { max-width: 47rem; margin: 0; color: var(--ink); font-size: 1.45rem; line-height: 1.35; }
.intro-copy p:not(.lead) { max-width: 54rem; color: var(--muted); font-size: .92rem; }
.portrait-link { float: left; margin: 0 3rem 1rem 0; }
.portrait { display: block; width: 9rem; height: 9rem; border: 8px solid white; border-radius: 50%; box-shadow: 0 8px 24px rgba(23, 33, 38, .12); }
.intro-copy::after { display: table; clear: both; content: ''; }
.repository-strip { display: flex; justify-content: space-between; gap: 2rem; padding: 1.25rem 0; border-bottom: 1px solid var(--line); font-family: system-ui, sans-serif; }
.eyebrow { margin: 0 0 .4rem; color: var(--accent-dark); font-size: .7rem; font-weight: bold; letter-spacing: .14em; text-transform: uppercase; }
.repo-list { display: flex; flex-wrap: wrap; gap: .5rem; list-style: none; margin: 0; padding: 0; }
.repo-list li { display: inline-block; }
.repo-list a { display: block; padding: .35rem .7rem; color: var(--ink); background: var(--warm); font-size: .85rem; text-decoration: none; }
.repo-list a:hover { background: #e2e8e3; }
.site-note { margin: 0; color: var(--muted); font-size: .85rem; text-align: right; }
.content { max-width: 60rem; padding: 2.5rem 0 4rem; }
.content h1, .content h2, .content h3, .content h4 { color: var(--ink); line-height: 1.2; }
.content h1 { margin: 0 0 1.5rem; border-bottom: 2px solid var(--accent); font-size: 3rem; }
.content h2 { margin-top: 3rem; font-size: 1.45rem; }
.content h3, .content h4 { margin-top: 2rem; }
.content table { width: 100%; margin: 1.2rem 0; border-collapse: collapse; }
.content td, .content th { padding: .7rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.content h4 + ul.list-inline { columns: 3; column-gap: 2rem; padding-left: 1.2rem; }
.content h4 + ul.list-inline li { break-inside: avoid; margin-bottom: .25rem; }
.content img { max-width: 100%; height: auto; }
.content td iframe[src*="ghbtns.com"] { width: 150px; max-width: 100%; }
.btn { display: inline-block; padding: .45rem .8rem; border: 1px solid var(--line); color: var(--accent-dark); background: white; cursor: pointer; }
.alert { margin-top: 1.5rem; padding: .8rem 1rem; background: #e4f2f0; border-left: 3px solid var(--accent); }
.site-footer { padding: 1.5rem 0; border-top: 1px solid var(--line); color: var(--muted); font-family: system-ui, sans-serif; font-size: .8rem; }
.hidden-print { display: block; }
@media (max-width: 680px) {
    .header-inner { align-items: flex-start; flex-direction: column; padding: 1.2rem 0; gap: .8rem; }
    nav { gap: .9rem; font-size: .68rem; }
    .intro { padding: 3.5rem 0 2.5rem; }
    .intro-copy .lead { font-size: 1.2rem; }
    .content h1 { font-size: 2.2rem; }
    .portrait-link { display: block; float: none; width: max-content; margin: 0 auto 1.5rem; }
    .portrait { width: 7rem; height: 7rem; }
    .repository-strip { display: block; }
    .site-note { margin-top: 1rem; text-align: left; }
    .content { padding-top: 2.5rem; overflow-wrap: anywhere; }
    .content table { display: table; overflow: visible; }
    .content table:nth-of-type(2) td { display: block; width: auto !important; padding-right: 0; text-align: left !important; }
    .content table:nth-of-type(n + 3) td:first-child { white-space: nowrap; }
    .content h4 + ul.list-inline { columns: 1; }
}
@media print {
    .hidden-print, .site-header, .site-footer { display: none !important; }
    body { background: white; font-size: .85rem; line-height: 1.4; }
    .shell { width: 100%; }
    .content { padding: 0; }
    .content h1 { font-size: 2rem; }
    .content h2 { margin-top: 1.5rem; font-size: 1.1rem; }
    .content h3, .content h4 { margin-top: 1rem; }
    .content td, .content th { padding: .35rem; }
    .content h4 + ul.list-inline { columns: 3; column-gap: 1rem; }
}