/* Layout: fixed-width reading column under a thin sticky bar; metadata set in mono,
   prose in serif, headings in a grotesque. Hairline rules instead of card shadows. */
:root {
  --bg: #F7F8FA;
  --surface: #FFFFFF;
  --fg: #11181F;
  --muted: #5A6672;
  --rule: #DCE2E9;
  --accent: #C8440F;
  --deep: #0C2340;
  --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0D1117;
    --surface: #151D26;
    --fg: #E7EDF3;
    --muted: #94A2B0;
    --rule: #26313E;
    --accent: #FF8355;
    --deep: #A9C3DE;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0D1117;
  --surface: #151D26;
  --fg: #E7EDF3;
  --muted: #94A2B0;
  --rule: #26313E;
  --accent: #FF8355;
  --deep: #A9C3DE;
  color-scheme: dark;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ---- top bar ---- */
.bar {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--rule);
}
.bar-in {
  max-width: 68rem; margin: 0 auto;
  padding: 0.7rem 1.25rem;
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.5rem 1.4rem;
}
.brand {
  font-family: var(--font-display);
  font-weight: 700; font-size: 1rem; letter-spacing: -0.01em;
  color: var(--fg); text-decoration: none; margin-right: auto;
}
.brand span { color: var(--muted); font-weight: 500; }
.bar nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1.1rem; }
.bar nav a {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--muted); text-decoration: none;
  padding-block: 0.15rem; border-bottom: 2px solid transparent;
}
.bar nav a:hover { color: var(--fg); }
.bar nav a[aria-current="page"] { color: var(--fg); border-bottom-color: var(--accent); }

/* ---- shell ---- */
.wrap { max-width: 68rem; margin: 0 auto; padding-inline: 1.25rem; padding-block: 0; }
.col { max-width: 44rem; }
main { padding-block: 2.5rem 1rem; }
section { padding-block: 2rem; border-top: 1px solid var(--rule); }
section:first-of-type { border-top: 0; padding-top: 0; }

/* ---- type ---- */
h1, h2, h3 { font-family: var(--font-display); text-wrap: balance; letter-spacing: -0.02em; margin: 0 0 0.6rem; }
h1 { font-size: clamp(1.9rem, 5vw, 2.9rem); line-height: 1.1; font-weight: 700; }
h2 { font-size: clamp(1.25rem, 3vw, 1.6rem); line-height: 1.2; font-weight: 650; }
h3 { font-size: 1.05rem; font-weight: 650; line-height: 1.3; }
p { margin: 0 0 1rem; }
.lede { font-size: 1.2rem; line-height: 1.55; color: var(--fg); }
.eyebrow {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--accent); margin: 0 0 0.75rem;
}
.muted { color: var(--muted); }
.small { font-size: 0.94rem; }

/* ---- hero ---- */
.hero { padding-block: 3rem 2.5rem; }
.hero h1 { max-width: 20ch; }
.hero .lede { max-width: 54ch; margin-top: 1rem; }
.rule-accent { width: 3.5rem; height: 3px; background: var(--accent); margin-bottom: 1.5rem; }

/* ---- stats ---- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr)); gap: 1.5rem 2rem; margin-top: 2rem; }
.stat { min-width: 0; border-top: 1px solid var(--rule); padding-top: 0.75rem; }
.stat b {
  display: block; font-family: var(--font-display); font-weight: 700;
  font-size: 1.85rem; line-height: 1.1; font-variant-numeric: tabular-nums; color: var(--deep);
}
.stat span { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.05em; text-transform: uppercase; color: var(--muted); }

/* ---- thrust / card grids ---- */
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr)); gap: 1.75rem 2.25rem; }
.thrust { min-width: 0; }
.thrust h3 { margin-bottom: 0.35rem; }
.thrust .num {
  font-family: var(--font-mono); font-size: 0.7rem; color: var(--accent);
  letter-spacing: 0.08em; display: block; margin-bottom: 0.3rem;
}

/* ---- lists ---- */
ul.plain { list-style: none; margin: 0; padding: 0; }
.news-item { display: grid; grid-template-columns: 7.5rem 1fr; gap: 0 1.25rem; padding-block: 0.7rem; border-top: 1px solid var(--rule); }
.news-item:first-child { border-top: 0; }
.news-item time {
  font-family: var(--font-mono); font-size: 0.74rem; color: var(--muted);
  letter-spacing: 0.02em; padding-top: 0.28rem; font-variant-numeric: tabular-nums;
}
.news-item p { margin: 0; font-size: 0.99rem; min-width: 0; }
@media (max-width: 34rem) { .news-item { grid-template-columns: 1fr; gap: 0.1rem; } }

.pub { padding-block: 0.6rem; border-top: 1px solid var(--rule); font-size: 0.98rem; min-width: 0; }
.pub:first-child { border-top: 0; }
.pub .venue { font-style: italic; }
.pub .yr { font-family: var(--font-mono); font-size: 0.76rem; color: var(--muted); font-variant-numeric: tabular-nums; }

.people { display: grid; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); gap: 0.9rem 1.75rem; }
.person { min-width: 0; border-top: 1px solid var(--rule); padding-top: 0.6rem; }
.person b { font-family: var(--font-display); font-weight: 600; font-size: 1rem; display: block; }
.person span { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); }

table { border-collapse: collapse; width: 100%; font-size: 0.94rem; }
.scroll { overflow-x: auto; }
th, td { text-align: left; padding: 0.45rem 0.9rem 0.45rem 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.07em; text-transform: uppercase; color: var(--muted); font-weight: 500; }
td.yr { font-family: var(--font-mono); font-size: 0.82rem; color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }

/* ---- callout + buttons ---- */
.callout { background: var(--surface); border: 1px solid var(--rule); border-left: 3px solid var(--accent); padding: 1.1rem 1.25rem; }
.callout :last-child { margin-bottom: 0; }
.btn {
  display: inline-block; font-family: var(--font-display); font-weight: 600; font-size: 0.92rem;
  background: var(--deep); color: var(--bg); text-decoration: none;
  padding: 0.6rem 1.15rem; border: 1px solid var(--deep);
}
.btn:hover { background: transparent; color: var(--fg); }
.btn.ghost { background: transparent; color: var(--fg); border-color: var(--rule); }
.btn.ghost:hover { border-color: var(--accent); color: var(--accent); }
.btns { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.25rem; }

.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0.9rem 0 0; padding: 0; list-style: none; }
.tags li {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.04em;
  border: 1px solid var(--rule); padding: 0.2rem 0.55rem; color: var(--muted);
}

.todo { border: 1px dashed var(--accent); padding: 0.55rem 0.8rem; font-family: var(--font-mono); font-size: 0.76rem; color: var(--accent); margin-block: 0.9rem; }

footer { border-top: 1px solid var(--rule); margin-top: 3rem; padding-block: 1.75rem 2.5rem; }
footer p { font-size: 0.88rem; color: var(--muted); margin: 0 0 0.3rem; }
footer a { color: var(--muted); }

@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }