/* rafaelromao.github.io
   Shares the design system used by the blog at /blog: paper and rust in light,
   Tokyo Night in dark, Literata for reading and Libre Franklin for apparatus.
   The page grammar is a datasheet: a hanging measure column, hairline rules,
   tabular figures. No framework, no build step. */

:root {
  /* Inherited from the blog's token set so the two halves read as one site. */
  --paper: oklch(0.975 0.008 85);
  --paper-2: oklch(0.955 0.010 85);
  --paper-3: oklch(0.925 0.012 85);
  --ink: oklch(0.24 0.012 60);
  --ink-2: oklch(0.42 0.012 60);
  /* Clears AA on --paper, --paper-2 and --paper-3: the rail and the code
     blocks sit on the darker two, where the page ground alone is not the test. */
  --ink-3: oklch(0.51 0.010 60);
  --rule: oklch(0.86 0.010 80);
  --accent: oklch(0.50 0.16 32);
  --accent-ink: oklch(0.42 0.15 32);
  --accent-wash: oklch(0.94 0.035 40);
  /* Career-page additions. */
  --rule-strong: oklch(0.72 0.012 80);
  --accent-quiet: oklch(0.72 0.09 34);

  --font-read: "Literata", Georgia, "Iowan Old Style", "Times New Roman", serif;
  --font-ui: "Libre Franklin", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-code: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --measure: 40rem;
  --content: 62rem;
  --gutter: 8.5rem;
  --pad: 1.25rem;
  --rail: 16.5rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 420ms;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #1a1b26;
    --paper-2: #16161e;
    --paper-3: #24283b;
    --ink: #c0caf5;
    --ink-2: #a9b1d6;
    --ink-3: #868eb8;
    --rule: #2f3549;
    --rule-strong: #3d4460;
    --accent: #7aa2f7;
    --accent-ink: #7dcfff;
    --accent-wash: #283457;
    --accent-quiet: #4c6bb5;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #1a1b26;
  --paper-2: #16161e;
  --paper-3: #24283b;
  --ink: #c0caf5;
  --ink-2: #a9b1d6;
  --ink-3: #868eb8;
  --rule: #2f3549;
  --rule-strong: #3d4460;
  --accent: #7aa2f7;
  --accent-ink: #7dcfff;
  --accent-wash: #283457;
  --accent-quiet: #4c6bb5;
  color-scheme: dark;
}

@media (prefers-reduced-motion: reduce) { :root { --dur: 0ms; } }

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
/* Scale the whole design up once there is a sidebar and a desk-sized screen.
   Measure and spacing are in rem too, so characters per line stay put: this is
   a zoom, not a reflow. Media queries resolve rem against the initial 16px, so
   the breakpoint itself does not move. */
@media (min-width: 64rem) { html { font-size: 112.5%; } }
@media (min-width: 100rem) { html { font-size: 118.75%; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-read);
  font-size: 1.0625rem;
  line-height: 1.65;
  font-kerning: normal;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-ink); }
::selection { background: var(--accent-wash); color: var(--ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
img { max-width: 100%; height: auto; }
h1, h2, h3 { font-weight: 600; letter-spacing: -0.018em; }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 30;
  background: var(--paper-2); color: var(--ink);
  padding: 0.6rem 1rem; font-family: var(--font-ui); border: 1px solid var(--rule);
}
.skip:focus { left: 0.5rem; top: 0.5rem; }

.nums { font-variant-numeric: tabular-nums; font-feature-settings: "tnum" 1; }

/* ---------- masthead ---------- */
.masthead {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: baseline; gap: 1rem 1.5rem; flex-wrap: wrap;
  padding: 0.95rem var(--pad);
  background: color-mix(in oklab, var(--paper) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-ui);
}
.masthead-title {
  font-weight: 600; font-size: 0.95rem; color: var(--ink); margin-right: auto;
}
.masthead-title:hover { color: var(--accent); }
.masthead-nav { display: flex; align-items: baseline; gap: 1.15rem; font-size: 0.83rem; }
.masthead-nav a { color: var(--ink-2); }
.masthead-nav a:hover { color: var(--accent); }
.masthead-nav .is-blog { color: var(--accent); }
/* Narrow: title and toggle share the first row, the nav takes the second.
   Flex wrapping would otherwise push the toggle onto a third row of its own. */
@media (max-width: 46rem) {
  .masthead {
    display: grid; grid-template-columns: minmax(0, 1fr) auto;
    align-items: center; gap: 0.5rem 1rem; padding: 0.7rem var(--pad);
  }
  .masthead-title { grid-row: 1; grid-column: 1; }
  .theme-btn { grid-row: 1; grid-column: 2; justify-self: end; }
  .masthead-nav { grid-row: 2; grid-column: 1 / -1; gap: 0.95rem; }
}
/* Secondary links only fit once the nav is a vertical rail. */
@media (max-width: 63.99rem) {
  .masthead-nav .opt { display: none; }
}

/* Rail-only furniture: hidden until the masthead becomes a sidebar. The nav
   wrapper is transparent to layout until then, so the bar keeps its own rules. */
.rail-portrait, .rail-role, .rail-foot, .chapters-nav { display: none; }
.rail-scroll { display: contents; }

/* ---------- masthead as a fixed sidebar ----------
   Same markup as the top bar, relaid out. Worth it on a page this tall:
   navigation stays reachable without scrolling back up. */
@media (min-width: 64rem) {
  body { padding-left: var(--rail); }
  .masthead {
    position: fixed; top: 0; left: 0; bottom: 0; width: var(--rail);
    /* Grid, not flex: the identity and the controls are pinned, and only the
       middle band scrolls. A plain scrolling column pushes the theme toggle off
       the bottom of a long chapter index, where it cannot be clicked. */
    display: grid; grid-template-rows: auto minmax(0, 1fr) auto auto;
    align-items: stretch; gap: 1.4rem; padding: 2.25rem 1.6rem 1.75rem;
    background: var(--paper-2); backdrop-filter: none;
    border-right: 1px solid var(--rule); border-bottom: 0;
    overflow: hidden;
  }
  .rail-scroll {
    display: flex; flex-direction: column; gap: 1.4rem;
    min-height: 0; overflow-y: auto; overscroll-behavior: contain;
  }
  .masthead-title { margin: 0; display: block; }
  .rail-portrait {
    display: block; width: 7rem; height: 7rem; border-radius: 50%;
    object-fit: cover; margin: 0 0 1.1rem; border: 1px solid var(--rule);
  }
  .rail-name { display: block; font-size: 1.05rem; line-height: 1.25; }
  .rail-role {
    display: block; font-size: 0.76rem; font-weight: 400; line-height: 1.4;
    color: var(--ink-3); margin-top: 0.2rem;
  }
  .masthead-nav {
    flex-direction: column; align-items: stretch; gap: 0; font-size: 0.88rem;
  }
  .masthead-nav a { padding: 0.38rem 0; }
  .masthead-nav .opt { display: block; }

  .chapters-nav {
    display: flex; flex-direction: column; gap: 0; font-size: 0.82rem;
    padding-top: 1.3rem; border-top: 1px solid var(--rule);
  }
  .chapters-nav a {
    color: var(--ink-2); padding: 0.3rem 0;
    display: flex; gap: 0.6rem; align-items: baseline;
  }
  .chapters-nav a:hover { color: var(--accent); }
  .chapters-nav .y {
    color: var(--ink-3); font-variant-numeric: tabular-nums;
    font-size: 0.72rem; flex: none; width: 2.2rem;
  }

  /* Scrollspy. Colour and weight only: a coloured side stripe here would be
     the same anti-pattern the rest of the page avoids. */
  .masthead-nav a.here, .chapters-nav a.here { color: var(--accent); font-weight: 600; }
  .chapters-nav a.here .y { color: var(--accent-ink); }

  .rail-foot { display: block; padding-top: 1.25rem; border-top: 1px solid var(--rule); }
  .rail-social {
    list-style: none; margin: 0 0 1rem; padding: 0;
    display: flex; flex-wrap: wrap; gap: 0.3rem 0.9rem; font-size: 0.78rem;
  }
  .rail-social a { color: var(--ink-3); }
  .rail-social a:hover { color: var(--accent); }
  .theme-btn { align-self: flex-start; margin: 0; }
}

.theme-btn {
  display: inline-flex; align-items: center; justify-content: center;
  background: none; border: 0; padding: 0.3rem; cursor: pointer;
  color: var(--ink-3); border-radius: 4px; align-self: center;
}
.theme-btn:hover { color: var(--accent); }
/* The button shows the theme it switches to. Every rule is scoped to .theme-btn
   so they share one specificity and order alone decides the winner. */
.theme-btn .i-sun { display: none; }
.theme-btn .i-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-btn .i-sun { display: block; }
  :root:not([data-theme="light"]) .theme-btn .i-moon { display: none; }
}
:root[data-theme="dark"] .theme-btn .i-sun { display: block; }
:root[data-theme="dark"] .theme-btn .i-moon { display: none; }
:root[data-theme="light"] .theme-btn .i-sun { display: none; }
:root[data-theme="light"] .theme-btn .i-moon { display: block; }

/* ---------- shell ---------- */
main { flex: 1 0 auto; width: 100%; max-width: var(--content); margin: 0 auto; padding: 0 var(--pad); }

/* The page grammar: a hanging measure column on the left carries indices,
   years and short labels; substance sits in the main column. */
.band { padding: clamp(3rem, 7vw, 5.5rem) 0 0; }
.band + .band { border-top: 1px solid var(--rule); }
.row, .rail { display: grid; gap: 0.5rem 2.5rem; }
@media (min-width: 56rem) {
  .row, .rail { grid-template-columns: var(--gutter) minmax(0, 1fr); }
}
/* Every ledger row in the page hangs off the same measure column. */
.rail { gap: 0.15rem 2.5rem; padding: 1.5rem 0; align-items: baseline; }
.rail > :first-child { padding-top: 0.15rem; }

.idx {
  font-family: var(--font-ui); font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.1em; color: var(--accent-ink);
  font-variant-numeric: tabular-nums; padding-top: 0.55rem;
}
@media (min-width: 56rem) { .idx { text-align: right; } }

.band-title {
  font-size: clamp(1.5rem, 3vw, 1.95rem); line-height: 1.2;
  margin: 0 0 0.6rem; scroll-margin-top: 4.5rem;
}
/* The spacing below a section heading lives on the row, so bands with no
   standfirst are not pulled tight against their content. */
.band > .row { margin-bottom: 2.25rem; }
.band-note {
  font-family: var(--font-ui); font-size: 0.98rem; color: var(--ink-2);
  max-width: var(--measure); margin: 0;
}

/* ---------- hero ---------- */
/* The portrait lives in the rail, so the hero is a single text column. */
.hero { padding: clamp(2.5rem, 6vw, 4.5rem) 0 clamp(2rem, 4vw, 3rem); }
.hero-grid { display: block; }

.role-line {
  font-family: var(--font-ui); font-size: 0.82rem; font-weight: 600;
  letter-spacing: 0.04em; color: var(--ink-3); margin: 0 0 1.1rem;
}
.role-line b { color: var(--accent-ink); font-weight: 600; }

/* The headline is the LinkedIn one, so it is a long three-clause string rather
   than a short phrase: smaller than a tagline would be, with the pipes muted so
   they read as separators instead of glyphs. */
.hero h1 {
  font-size: clamp(1.6rem, 3.3vw, 2.4rem);
  line-height: 1.18; letter-spacing: -0.022em;
  margin: 0 0 0.85rem; text-wrap: pretty;
}
.hero h1 .bar {
  color: var(--ink-3); font-weight: 400;
  padding: 0 0.12em; letter-spacing: 0;
}
.tagline-line {
  font-size: clamp(1.05rem, 2vw, 1.22rem); line-height: 1.35;
  color: var(--accent-ink); margin: 0 0 1.15rem; letter-spacing: -0.01em;
}
.hero-deck {
  font-family: var(--font-ui); font-size: clamp(1.02rem, 1.9vw, 1.16rem);
  line-height: 1.55; color: var(--ink-2); margin: 0 0 1.6rem; max-width: 44ch;
}
.hero-deck strong { color: var(--ink); font-weight: 600; }

.portrait { margin: 0; }
/* The source is 400px square, so cap the display at 200px to keep it 2x. */
.portrait img {
  width: 100%; max-width: 12.5rem; aspect-ratio: 1; object-fit: cover;
  border-radius: 0.85rem;
  border: 1px solid var(--rule);
}

.facts {
  list-style: none; margin: 0 0 1.9rem; padding: 0;
  display: flex; flex-wrap: wrap; gap: 0.35rem 0.9rem;
  font-family: var(--font-ui); font-size: 0.82rem; color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}
/* The separator trails its item rather than leading the next one, so a wrapped
   line never opens with a stray slash. */
.facts li:not(:last-child)::after { content: "/"; color: var(--rule-strong); margin-left: 0.85rem; }

.actions { display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 0; }
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-ui); font-size: 0.88rem; font-weight: 500;
  padding: 0.55rem 1rem; border-radius: 3px;
  border: 1px solid var(--rule-strong); color: var(--ink);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn-primary {
  background: var(--accent); border-color: var(--accent); color: var(--paper);
}
.btn-primary:hover { background: var(--accent-ink); border-color: var(--accent-ink); color: var(--paper); }
.btn svg { flex: none; }

/* ---------- span chart ---------- */
.chart-wrap { margin: 0; padding: clamp(2rem, 5vw, 3rem) 0 0; }
.chart-scroll { overflow-x: auto; overscroll-behavior-x: contain; }
/* The chart scrolls horizontally on narrow screens either way, so hold it near
   its natural width: below about 52rem the 11px labels scale down past
   legibility. Scroll distance is the cheaper cost. */
.chart { display: block; width: 100%; min-width: 52rem; height: auto; }
.chart text { font-family: var(--font-ui); fill: var(--ink-3); font-variant-numeric: tabular-nums; }
.chart .ax { font-size: 10px; letter-spacing: 0.04em; }
.chart .lbl { font-size: 11px; fill: var(--ink-2); }
.chart .lbl-strong { font-size: 11px; fill: var(--ink); font-weight: 600; }
.chart .grid-line { stroke: var(--rule); stroke-width: 1; }
.chart .axis-line { stroke: var(--rule-strong); stroke-width: 1; }
.chart .step { stroke: var(--accent); stroke-width: 2; fill: none; stroke-linejoin: round; stroke-linecap: round; }
.chart .dot { fill: var(--accent); }
.chart .dot-now { fill: var(--accent); stroke: var(--paper); stroke-width: 2.5; }
.chart .lang { fill: var(--accent-quiet); opacity: 0.5; }
.chart .lang-now { fill: var(--accent); opacity: 0.72; }
.chart-key {
  font-family: var(--font-ui); font-size: 0.78rem; color: var(--ink-3);
  margin: 0.9rem 0 0; max-width: var(--measure);
}

/* ---------- prose ---------- */
.prose { max-width: var(--measure); }
.prose p { margin: 0 0 1.3rem; }
.prose p:last-child { margin-bottom: 0; }
.prose strong { font-weight: 650; color: var(--ink); }

/* ---------- ledger ---------- */
.ledger { list-style: none; margin: 0; padding: 0; }
.ledger > li { border-top: 1px solid var(--rule); }
.ledger > li:last-child { border-bottom: 1px solid var(--rule); }

.post-when {
  font-family: var(--font-ui); font-size: 0.8rem; color: var(--ink-3);
  font-variant-numeric: tabular-nums; letter-spacing: 0.01em;
  white-space: nowrap;
}
@media (min-width: 56rem) { .post-when { text-align: right; } }
.post-when .len { display: block; color: var(--ink-3); font-size: 0.74rem; opacity: 0.85; }

.post-title { font-size: 1.2rem; line-height: 1.3; margin: 0 0 0.15rem; }
.post-org {
  font-family: var(--font-ui); font-size: 0.84rem; color: var(--ink-2);
  margin: 0 0 0.65rem;
}
.post-org .here {
  color: var(--accent-ink); font-weight: 600;
}
.post p { margin: 0 0 0.8rem; max-width: var(--measure); }
.post p:last-child { margin-bottom: 0; }
.post-list { margin: 0; padding-left: 1.1rem; max-width: var(--measure); }
.post-list li { margin: 0.35rem 0; }

.org-head { padding: 1.75rem 0 0.4rem; font-family: var(--font-ui); }
.org-head .span {
  font-size: 0.8rem; color: var(--ink-3); font-variant-numeric: tabular-nums;
}
@media (min-width: 56rem) { .org-head .span { text-align: right; } }
.org-head h3 { font-family: var(--font-ui); font-size: 0.95rem; margin: 0; letter-spacing: 0; }
.org-head .org-note { font-size: 0.82rem; color: var(--ink-3); margin: 0.15rem 0 0; }

/* ---------- systems ---------- */
.systems { margin: 0; padding: 0; list-style: none; }
.systems > li { border-top: 1px solid var(--rule); }
.systems > li:last-child { border-bottom: 1px solid var(--rule); }
.sys-when {
  font-family: var(--font-ui); font-size: 0.8rem; color: var(--ink-3);
  font-variant-numeric: tabular-nums; white-space: nowrap;
}
@media (min-width: 56rem) { .sys-when { text-align: right; } }
.systems h3 { font-size: 1.15rem; margin: 0 0 0.55rem; }
.systems p { margin: 0 0 0.7rem; max-width: var(--measure); }
.systems p:last-child { margin-bottom: 0; }
.stack {
  list-style: none; display: flex; flex-wrap: wrap; gap: 0.4rem;
  margin: 0.85rem 0 0; padding: 0;
}
.stack li {
  font-family: var(--font-ui); font-size: 0.72rem; color: var(--ink-2);
  border: 1px solid var(--rule); border-radius: 999px; padding: 0.15rem 0.6rem;
  font-variant-numeric: tabular-nums;
}

/* ---------- method ---------- */
.method { list-style: none; counter-reset: m; margin: 0; padding: 0; }
.method > li { counter-increment: m; border-top: 1px solid var(--rule); }
.method > li:last-child { border-bottom: 1px solid var(--rule); }
/* Neutral, not accent: the section index in the gutter is the loud numeral,
   these sit a step below it. --accent-quiet is reserved for the chart, where
   it only ever fills a shape. */
.method .num::before {
  content: counter(m, decimal-leading-zero);
  font-family: var(--font-ui); font-size: 0.78rem; font-weight: 600;
  color: var(--ink-3); font-variant-numeric: tabular-nums;
}
@media (min-width: 56rem) { .method .num { text-align: right; } }
.method h3 { font-family: var(--font-ui); font-size: 0.98rem; margin: 0; letter-spacing: 0; }
.method p { margin: 0.2rem 0 0; font-size: 0.98rem; color: var(--ink-2); max-width: var(--measure); }

/* ---------- projects ---------- */
.proj-lead {
  display: grid; gap: 1.5rem 2.5rem; align-items: start;
  padding: 1.6rem 0; border-top: 1px solid var(--rule-strong);
  border-bottom: 1px solid var(--rule);
}
@media (min-width: 50rem) { .proj-lead { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); } }
.proj-lead h3 { font-size: 1.5rem; margin: 0 0 0.15rem; }
.proj-lead h3 a { color: var(--ink); }
.proj-lead h3 a:hover { color: var(--accent); }
.proj-lead .tagline {
  font-family: var(--font-ui); font-size: 0.88rem; color: var(--accent-ink);
  margin: 0 0 0.75rem;
}
.proj-lead p { margin: 0 0 0.8rem; }
.proj-figure {
  margin: 0; border: 1px solid var(--rule); border-radius: 3px;
  background: var(--paper-2); padding: 1.1rem 1.2rem; overflow: hidden;
}
.proj-figure pre {
  margin: 0; font-family: var(--font-code); font-size: 0.76rem; line-height: 1.7;
  color: var(--ink-2); overflow-x: auto; white-space: pre;
}
.proj-figure .c { color: var(--ink-3); }
.proj-figure .k { color: var(--accent-ink); }

.projects {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 0;
}
@media (min-width: 44rem) {
  .projects { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 2.5rem; }
}
.projects > li { padding: 1.35rem 0; border-bottom: 1px solid var(--rule); }
.proj-name {
  font-family: var(--font-ui); font-size: 1rem; font-weight: 600;
  margin: 0 0 0.1rem; letter-spacing: 0;
}
.proj-name a { color: var(--ink); }
.proj-name a:hover { color: var(--accent); }
.proj-meta {
  font-family: var(--font-ui); font-size: 0.72rem; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--ink-3); margin: 0 0 0.5rem;
}
.projects p { margin: 0; font-size: 0.95rem; color: var(--ink-2); }

/* ---------- writing ---------- */
.writing { list-style: none; margin: 0; padding: 0; }
.writing > li { border-top: 1px solid var(--rule); }
.writing > li:last-child { border-bottom: 1px solid var(--rule); }
.writing h3 { font-size: 1.05rem; margin: 0 0 0.25rem; }
.writing h3 a { color: var(--ink); }
.writing h3 a:hover { color: var(--accent); }
.writing .where {
  font-family: var(--font-ui); font-size: 0.75rem; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--ink-3); margin: 0;
}
@media (min-width: 56rem) { .writing .where { text-align: right; } }
.writing p.sum { font-family: var(--font-ui); font-size: 0.92rem; color: var(--ink-2); margin: 0; max-width: var(--measure); }

.blog-plug {
  display: grid; gap: 1rem; align-items: center;
  padding: 1.5rem 1.5rem; margin: 0 0 2rem;
  background: var(--paper-2); border: 1px solid var(--rule); border-radius: 4px;
}
@media (min-width: 40rem) { .blog-plug { grid-template-columns: minmax(0, 1fr) auto; gap: 2rem; } }
.blog-plug h3 { font-size: 1.2rem; margin: 0 0 0.3rem; }
.blog-plug p { font-family: var(--font-ui); font-size: 0.92rem; color: var(--ink-2); margin: 0; max-width: 46ch; }

/* ---------- credentials ---------- */
.creds { display: grid; gap: 2.5rem; }
@media (min-width: 46rem) { .creds { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2.5rem 3rem; } }
.creds h3 {
  font-family: var(--font-ui); font-size: 0.76rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.09em; color: var(--ink-3);
  margin: 0 0 0.9rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--rule);
}
.cred-list { list-style: none; margin: 0; padding: 0; font-family: var(--font-ui); }
.cred-list > li { padding: 0.6rem 0; border-bottom: 1px solid var(--rule); font-size: 0.9rem; }
.cred-list > li:last-child { border-bottom: 0; }
.cred-list .name { color: var(--ink); display: block; }
.cred-list .sub {
  color: var(--ink-3); font-size: 0.8rem; font-variant-numeric: tabular-nums;
  display: block; margin-top: 0.1rem;
}

/* ---------- footer ---------- */
.site-foot {
  flex: 0 0 auto; margin-top: clamp(3rem, 7vw, 5rem);
  border-top: 1px solid var(--rule-strong);
  padding: clamp(2.5rem, 5vw, 3.5rem) var(--pad) 3rem;
  font-family: var(--font-ui);
}
.foot-inner { max-width: var(--content); margin: 0 auto; display: grid; gap: 2rem; }
@media (min-width: 46rem) { .foot-inner { grid-template-columns: minmax(0, 1fr) auto; align-items: end; } }
.foot-inner h2 { font-size: clamp(1.4rem, 3vw, 1.85rem); margin: 0 0 0.5rem; font-family: var(--font-read); }
.foot-inner p { margin: 0; color: var(--ink-2); font-size: 0.95rem; max-width: 42ch; }
.foot-links { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.4rem 1.25rem; font-size: 0.88rem; }
.foot-links a { color: var(--ink-2); display: inline-flex; align-items: center; gap: 0.45rem; }
.foot-links a:hover { color: var(--accent); }
.colophon {
  max-width: var(--content); margin: 2.5rem auto 0; padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  font-size: 0.78rem; color: var(--ink-3);
  display: flex; flex-wrap: wrap; gap: 0.35rem 1.5rem; justify-content: space-between;
}
.colophon p { margin: 0; }

/* ---------- signature statement ----------
   One claim, one fold. The only place on the page that gets this much room. */
.statement {
  padding: clamp(3.5rem, 9vw, 6.5rem) 0;
  border-top: 1px solid var(--rule);
}
.statement blockquote {
  margin: 0; max-width: 24ch;
  font-size: clamp(1.75rem, 4.6vw, 3.1rem);
  line-height: 1.1; letter-spacing: -0.028em; font-weight: 600;
  text-wrap: balance;
}
.statement .after {
  font-family: var(--font-ui); font-size: 1rem; line-height: 1.6;
  color: var(--ink-2); max-width: var(--measure);
  margin: 1.75rem 0 0;
}
.statement .after strong { color: var(--ink); font-weight: 600; }

/* ---------- decision record ---------- */
.decision {
  margin: 1.1rem 0 0; padding: 0;
  max-width: var(--measure);
  font-family: var(--font-ui); font-size: 0.9rem;
  border-top: 1px solid var(--rule);
}
.decision > div {
  display: grid; gap: 0.1rem 1.25rem;
  padding: 0.55rem 0; border-bottom: 1px solid var(--rule);
}
@media (min-width: 34rem) { .decision > div { grid-template-columns: 5.5rem minmax(0, 1fr); } }
.decision dt {
  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--ink-3); font-weight: 600; padding-top: 0.15rem;
}
.decision dd { margin: 0; color: var(--ink-2); }
.decision > div:last-child dt { color: var(--accent-ink); }

/* ---------- featured project figure ---------- */
.proj-feature {
  padding: 1.75rem 0 2rem; border-bottom: 1px solid var(--rule);
}
.proj-feature h3 { font-size: 1.5rem; margin: 0 0 0.15rem; }
.proj-feature h3 a { color: var(--ink); }
.proj-feature h3 a:hover { color: var(--accent); }
.proj-feature .tagline {
  font-family: var(--font-ui); font-size: 0.88rem; color: var(--accent-ink);
  margin: 0 0 0.85rem;
}
.proj-feature p { margin: 0 0 0.9rem; max-width: var(--measure); }
.proj-feature p:last-child { margin-bottom: 0; }

.figure-note {
  font-family: var(--font-ui); font-size: 0.8rem; color: var(--ink-3);
  margin: 0.85rem 0 0; max-width: var(--measure); line-height: 1.5;
}
.diagram-wrap { margin: 1.5rem 0 0; }
.diagram-scroll { overflow-x: auto; overscroll-behavior-x: contain; }
.diagram { display: block; width: 100%; min-width: 46rem; height: auto; }
.diagram text { font-family: var(--font-ui); fill: var(--ink-2); }
.diagram .d-lbl { font-size: 12px; }
.diagram .d-small { font-size: 10.5px; fill: var(--ink-3); letter-spacing: 0.04em; }
.diagram .d-mono { font-family: var(--font-code); font-size: 11.5px; fill: var(--ink-2); }
.diagram .d-head {
  font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.1em;
  fill: var(--ink-3); font-weight: 600;
}
.diagram .d-box { fill: var(--paper-2); stroke: var(--rule); stroke-width: 1; }
.diagram .d-bit { fill: none; stroke: var(--rule-strong); stroke-width: 1; }
.diagram .d-bit-free { fill: var(--accent-wash); stroke: var(--accent); stroke-width: 1.25; }
.diagram .d-line { stroke: var(--rule-strong); stroke-width: 1; fill: none; }
.diagram .d-flow { stroke: var(--accent); stroke-width: 1.5; fill: none; }
.diagram .d-accent { fill: var(--accent-ink); }

/* ---------- story page ---------- */
.story-intro { padding: clamp(2.5rem, 6vw, 4rem) 0 clamp(1.5rem, 3vw, 2.5rem); }
.story-intro h1 {
  font-size: clamp(2.1rem, 6vw, 3.4rem); line-height: 1.05;
  letter-spacing: -0.03em; margin: 0 0 1rem; max-width: 16ch; text-wrap: balance;
}
.story-intro .deck {
  font-family: var(--font-ui); font-size: clamp(1rem, 1.9vw, 1.14rem);
  line-height: 1.55; color: var(--ink-2); margin: 0; max-width: 46ch;
}
.back {
  font-family: var(--font-ui); font-size: 0.82rem; color: var(--ink-3);
  display: inline-flex; align-items: center; gap: 0.45rem; margin: 0 0 1.5rem;
}
.back:hover { color: var(--accent); }

.chapters { list-style: none; margin: 0; padding: 0; counter-reset: ch; }
.chapters > li { counter-increment: ch; border-top: 1px solid var(--rule); }
.chapters > li:last-child { border-bottom: 1px solid var(--rule); }
.ch-when {
  font-family: var(--font-ui); font-variant-numeric: tabular-nums;
  font-size: 0.8rem; color: var(--ink-3); white-space: nowrap;
}
@media (min-width: 56rem) { .ch-when { text-align: right; } }
/* --accent-quiet only ever fills a shape; it does not reach text contrast. */
.ch-when .n {
  display: block; font-size: 0.7rem; letter-spacing: 0.08em; font-weight: 600;
  color: var(--accent-ink); margin-top: 0.15rem;
}
.chapters h2 {
  font-size: clamp(1.25rem, 2.6vw, 1.6rem); line-height: 1.2;
  margin: 0 0 0.7rem; scroll-margin-top: 4.5rem;
}
.chapters p { margin: 0 0 1.05rem; max-width: var(--measure); }
.chapters p:last-child { margin-bottom: 0; }
.pull {
  margin: 1.5rem 0; padding: 0; max-width: var(--measure);
  font-size: clamp(1.15rem, 2.4vw, 1.45rem); line-height: 1.3;
  letter-spacing: -0.015em; color: var(--accent-ink); font-weight: 600;
}
.landing {
  font-family: var(--font-ui); font-size: 0.92rem; line-height: 1.55;
  color: var(--ink-2); margin: 1.15rem 0 0; padding-top: 0.9rem;
  border-top: 1px solid var(--rule); max-width: var(--measure);
}
.landing b {
  color: var(--ink-3); font-weight: 600; font-size: 0.7rem;
  text-transform: uppercase; letter-spacing: 0.08em;
  display: block; margin-bottom: 0.25rem;
}

.story-end {
  padding: clamp(2.5rem, 6vw, 4rem) 0 0;
  display: grid; gap: 1.5rem; align-items: center;
}
@media (min-width: 44rem) { .story-end { grid-template-columns: minmax(0, 1fr) auto; gap: 2.5rem; } }
.story-end h2 { font-size: clamp(1.4rem, 3vw, 1.85rem); margin: 0 0 0.5rem; }
.story-end p { margin: 0; color: var(--ink-2); font-family: var(--font-ui); font-size: 0.95rem; max-width: 46ch; }

/* ---------- story invitation on the front page ---------- */
.story-plug {
  display: grid; gap: 1.25rem; align-items: center;
  padding: clamp(1.5rem, 3vw, 2rem) 0 0;
}
@media (min-width: 44rem) { .story-plug { grid-template-columns: minmax(0, 1fr) auto; gap: 2.5rem; } }
.story-plug h3 { font-size: 1.25rem; margin: 0 0 0.35rem; }
.story-plug p { font-family: var(--font-ui); font-size: 0.95rem; color: var(--ink-2); margin: 0; max-width: 48ch; }

/* ---------- entrance ----------
   Gated on .js so the page is fully readable when scripting is off or fails. */
@media (prefers-reduced-motion: no-preference) {
  .js .reveal { opacity: 0; transform: translateY(12px); }
  .js .reveal.seen {
    opacity: 1; transform: none;
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  }
}

@media print {
  .masthead, .theme-btn, .actions, .blog-plug { display: none; }
  body { font-size: 10.5pt; }
  a { color: inherit; }
  /* Never print a hidden reveal: the observer does not run for print. */
  .js .reveal { opacity: 1 !important; transform: none !important; }
}