/* Layout: one 1040px column. Homepage hero is text + portrait; sections are a label rail plus content.
   Articles use a single ~68ch reading column. Colours follow the visitor's light/dark preference. */
:root {
  --bg: #F4F6F5;
  --surface: #FFFFFF;
  --fg: #142019;
  --muted: #5A6A62;
  --line: #D3DBD7;
  --accent: #1E5640;
  --accent-soft: #E1ECE6;
  --code-bg: #EDF1EF;
  /* syntax colours */
  --c-comment: #6B7C74; --c-keyword: #8A3B6E; --c-string: #2F6B2F; --c-number: #A0521C;
  --c-func: #1F5A8C; --c-type: #7A5A00;

  --display: "Bricolage Grotesque", "Avenir Next", system-ui, sans-serif;
  --body: "Public Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0E1412; --surface: #151D1A; --fg: #E3EAE6; --muted: #93A49B; --line: #26332E;
    --accent: #7CC3A1; --accent-soft: #17291F; --code-bg: #121A17;
    --c-comment: #7D8F86; --c-keyword: #E39AC8; --c-string: #9CD58F; --c-number: #F0A973;
    --c-func: #8DC2F0; --c-type: #E8C66A;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg); color: var(--fg);
  font: 16px/1.65 var(--body);
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
  padding-block: 0 48px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: inherit; text-decoration-color: var(--line); text-underline-offset: 3px; text-decoration-thickness: 1.5px; }
a:hover { text-decoration-color: var(--accent); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
h1, h2, h3, h4 { font-family: var(--display); font-weight: 650; margin: 0; text-wrap: balance; letter-spacing: -0.015em; }
p { margin: 0; }
.mono { font-family: var(--mono); font-size: 13px; letter-spacing: 0.01em; }
.label { font: 500 12px/1.4 var(--mono); text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; background: var(--surface); padding: 8px 12px; border-radius: 4px; z-index: 10; }

.wrap { max-width: 1040px; margin: 0 auto; }
nav.top { display: flex; justify-content: space-between; align-items: center; gap: 12px 16px; padding-block: 24px; flex-wrap: wrap; }
nav.top .me { font: 650 17px/1 var(--display); text-decoration: none; }
nav.top ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 22px; flex-wrap: wrap; font-size: 14px; color: var(--muted); }
nav.top ul a { text-decoration: none; }
nav.top ul a:hover { color: var(--fg); }

.links { display: flex; flex-wrap: wrap; gap: 10px 22px; font-size: 15px; }
.links a { font-weight: 500; }
.links .email { font-family: var(--mono); font-size: 14px; font-weight: 400; color: var(--muted); }
.cta { font-weight: 600; color: var(--accent); text-decoration: none; }
.cta:hover { text-decoration: underline; }

/* Hero */
.hero { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 56px; align-items: end; padding-block: 56px 72px; border-bottom: 1px solid var(--line); }
.hero-text { display: grid; gap: 24px; min-width: 0; }
.hero h1 { font-size: clamp(36px, 5.6vw, 60px); line-height: 1.04; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .intro { font-size: 18px; color: var(--muted); max-width: 58ch; }
.hero .intro strong { color: var(--fg); font-weight: 500; }
.portrait { margin: 0; }
.portrait img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 4px; display: block; }

/* Homepage sections */
section.block { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 40px; padding-block: 64px; border-bottom: 1px solid var(--line); }
section.block > header { display: grid; gap: 8px; align-content: start; }
section.block > header h2 { font-size: 26px; }
section.block > header p { color: var(--muted); font-size: 14px; }

.project { display: grid; gap: 14px; padding-block: 28px; border-top: 1px solid var(--line); min-width: 0; }
.project:first-child { border-top: 0; padding-top: 0; }
.project .head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px 16px; flex-wrap: wrap; }
.project h3 { font-size: 24px; }
.project .kind, .project .stack { color: var(--muted); }
.project .pitch { font-size: 17px; max-width: 62ch; }
.project ul { margin: 0; padding-left: 18px; display: grid; gap: 6px; color: var(--muted); max-width: 66ch; }
.project ul li::marker { color: var(--accent); }
.project .foot { display: flex; justify-content: space-between; align-items: center; gap: 10px 20px; flex-wrap: wrap; }

/* The factory loop, drawn as a line of steps */
.loop { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; padding: 14px; background: var(--surface); border: 1px solid var(--line); border-radius: 6px; }
.step { font: 500 12px/1 var(--mono); padding: 7px 9px; border-radius: 4px; background: var(--accent-soft); color: var(--fg); white-space: nowrap; }
.step.gate { background: transparent; border: 1.5px solid var(--accent); color: var(--accent); }
.step small { font-size: 11px; color: var(--muted); }
.arr { font: 12px/1 var(--mono); color: var(--muted); }
.loop .back { flex-basis: 100%; font: 12px/1.4 var(--mono); color: var(--muted); padding-top: 4px; }

.roles { list-style: none; margin: 0; padding: 0; display: grid; }
.role { display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 20px; padding-block: 18px; border-top: 1px solid var(--line); }
.role:first-child { border-top: 0; padding-top: 0; }
.role .when { color: var(--muted); padding-top: 4px; font-variant-numeric: tabular-nums; }
.role h3 { font-size: 18px; font-weight: 500; letter-spacing: 0; }
.role h3 .at { color: var(--muted); }
.role p { color: var(--muted); max-width: 64ch; margin-top: 4px; }
.role.now .when { color: var(--accent); }

.posts { list-style: none; margin: 0; padding: 0; display: grid; }
.post { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 6px 24px; padding-block: 20px; border-top: 1px solid var(--line); }
.post:first-child { border-top: 0; padding-top: 0; }
.post h3 { font-size: 20px; }
.post h3 a { text-decoration: none; }
.post h3 a:hover { color: var(--accent); }
.post p { color: var(--muted); grid-column: 1; max-width: 62ch; }
.post .date { color: var(--muted); grid-column: 2; grid-row: 1; padding-top: 5px; white-space: nowrap; }
.archive { margin-top: 20px; display: inline-block; }

.contact { padding-block: 64px 24px; display: grid; gap: 18px; }
.contact h2 { font-size: clamp(28px, 4vw, 40px); }
.contact p { color: var(--muted); max-width: 54ch; }

.site-foot { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; color: var(--muted); }
.foot-links { display: flex; gap: 18px; }

/* Listing pages */
.page-head { display: grid; gap: 14px; padding-block: 48px 40px; border-bottom: 1px solid var(--line); }
.page-head h1 { font-size: clamp(34px, 5vw, 52px); line-height: 1.05; }
.page-head p { color: var(--muted); max-width: 60ch; font-size: 17px; }
.year { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 40px; padding-block: 40px; border-bottom: 1px solid var(--line); }
.year h2 { font-size: 15px; font-weight: 500; color: var(--muted); letter-spacing: 0.04em; }

/* Articles */
.article { max-width: 720px; margin: 0 auto; padding-block: 40px 24px; }
.article-head { display: grid; gap: 16px; padding-bottom: 32px; margin-bottom: 36px; border-bottom: 1px solid var(--line); }
.article-head h1 { font-size: clamp(32px, 5vw, 48px); line-height: 1.08; }
.back-link { color: var(--muted); text-decoration: none; }
.back-link:hover { color: var(--accent); }
.dek { font-size: 19px; color: var(--muted); }
.meta { color: var(--muted); display: flex; flex-wrap: wrap; gap: 6px 18px; }
.notice { background: var(--accent-soft); border-radius: 6px; padding: 12px 14px; font-size: 15px; }
.notice a { color: var(--accent); font-weight: 600; }
.article-foot { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); }

.prose { font-size: 17px; line-height: 1.7; display: flow-root; min-width: 0; }
.prose > * + * { margin-top: 1.1em; }
.prose h2 { font-size: 28px; margin-top: 2em; }
.prose h3 { font-size: 21px; margin-top: 1.7em; }
.prose h4 { font-size: 17px; margin-top: 1.5em; }
.prose h2 + *, .prose h3 + *, .prose h4 + * { margin-top: 0.6em; }
.prose ul, .prose ol { padding-left: 22px; margin-bottom: 0; }
.prose li + li { margin-top: 0.35em; }
.prose li::marker { color: var(--accent); }
.prose a { color: var(--accent); text-decoration-color: currentColor; text-decoration-thickness: 1px; }
.prose strong { font-weight: 600; }
.prose img { display: block; border-radius: 4px; margin-inline: auto; }
.prose blockquote { margin-left: 0; padding-left: 18px; border-left: 3px solid var(--accent); color: var(--muted); }
.prose hr { border: 0; border-top: 1px solid var(--line); margin-block: 2.5em; }
.prose table { display: block; overflow-x: auto; border-collapse: collapse; font-size: 15px; max-width: 100%; }
.prose th, .prose td { text-align: left; vertical-align: top; padding: 10px 14px 10px 0; border-bottom: 1px solid var(--line); min-width: 140px; }
.prose th { font: 500 12px/1.4 var(--mono); text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.prose .loop { margin-block: 1.6em; }

.prose code { font-family: var(--mono); font-size: 0.85em; background: var(--code-bg); border-radius: 4px; padding: 0.1em 0.35em; overflow-wrap: anywhere; }
.prose pre { font: 14px/1.6 var(--mono); background: var(--code-bg); border: 1px solid var(--line); border-radius: 6px; padding: 16px 18px; overflow-x: auto; margin: 0; }
.prose pre code { background: none; padding: 0; font-size: inherit; overflow-wrap: normal; }
.prose div.highlighter-rouge, .prose figure.highlight { margin-inline: 0; }

/* Inline SVG diagrams in posts */
.prose figure.diagram { margin: 1.8em 0; display: grid; gap: 10px; }
.prose figure.diagram svg { display: block; width: 100%; min-width: 640px; height: auto; }
.prose figure.diagram > svg { background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 12px; }
.prose figure.diagram { overflow-x: auto; }
.prose figure.diagram figcaption { font-size: 14px; color: var(--muted); }
.diagram text { fill: var(--fg); font: 13px var(--body); }
.diagram .dg-sm { fill: var(--muted); font-size: 11.5px; }
.diagram .dg-b { font-weight: 600; font-size: 14px; }
.diagram .dg-lbl { fill: var(--muted); font: 500 10.5px var(--mono); letter-spacing: 0.1em; }
.diagram .dg-box { fill: var(--bg); stroke: var(--line); stroke-width: 1.5; }
.diagram .dg-faint { stroke-dasharray: 4 3; }
.diagram .dg-core { fill: var(--accent-soft); stroke: var(--accent); stroke-width: 2; }
.diagram .dg-line { fill: none; stroke: var(--muted); stroke-width: 1.5; }
.diagram .dg-dash { stroke: var(--accent); stroke-dasharray: 5 4; }
.diagram .dg-head { fill: var(--muted); }

/* Rouge token colours */
.highlight .c, .highlight .c1, .highlight .cm, .highlight .cs, .highlight .cp, .highlight .ch, .highlight .cpf { color: var(--c-comment); font-style: italic; }
.highlight .k, .highlight .kd, .highlight .kn, .highlight .kp, .highlight .kr, .highlight .kc, .highlight .ow, .highlight .nt { color: var(--c-keyword); }
.highlight .s, .highlight .s1, .highlight .s2, .highlight .sb, .highlight .sd, .highlight .se, .highlight .sh, .highlight .si, .highlight .sx, .highlight .sr, .highlight .ss, .highlight .sa, .highlight .dl { color: var(--c-string); }
.highlight .m, .highlight .mi, .highlight .mf, .highlight .mh, .highlight .mo, .highlight .il, .highlight .kt { color: var(--c-number); }
.highlight .nf, .highlight .fm, .highlight .nb, .highlight .bp, .highlight .na { color: var(--c-func); }
.highlight .nc, .highlight .nn, .highlight .nd, .highlight .ne, .highlight .no { color: var(--c-type); }
.highlight .err { color: inherit; background: none; }

@media (max-width: 820px) {
  .hero { grid-template-columns: minmax(0, 1fr); gap: 28px; padding-block: 24px 48px; }
  .portrait { order: -1; width: min(180px, 55%); }
  section.block, .year { grid-template-columns: minmax(0, 1fr); gap: 24px; padding-block: 48px; }
  .year { gap: 16px; padding-block: 32px; }
  .role { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .post { grid-template-columns: minmax(0, 1fr); }
  .post .date { grid-column: 1; grid-row: auto; padding-top: 0; }
  .prose { font-size: 16px; }
  .prose h2 { font-size: 24px; }
}
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }