:root {
  --ink: #16181d;
  --muted: #55606e;
  --faint: #8a939f;
  --rule: #d9dee5;
  --bg: #ffffff;
  --panel: #f5f7fa;
  --panel-2: #eef2f7;
  --accent: #1f3a5f;
  --accent-2: #2f6f9e;
  --accent-soft: #e8eef6;
  --max: 44rem;
  --wide: 68rem;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #e9ebef;
    --muted: #a4aeba;
    --faint: #78828f;
    --rule: #282e36;
    --bg: #0d1014;
    --panel: #141920;
    --panel-2: #19202a;
    --accent: #8fb3dd;
    --accent-2: #6fa8d8;
    --accent-soft: #16202c;
  }
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Charter", "Iowan Old Style", Palatino, Georgia, serif;
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 1.5rem; }
.wrap.wide { max-width: var(--wide); }

/* ---------- masthead ---------- */
header.site {
  border-bottom: 1px solid var(--rule);
  padding: 1.1rem 0;
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
}
header.site .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem;
}
.brand {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-weight: 600; font-size: 1rem; letter-spacing: -0.01em;
  color: var(--ink); text-decoration: none; white-space: nowrap;
}
nav.site { font-family: ui-sans-serif, system-ui, sans-serif; font-size: 0.875rem; }
nav.site > ul { list-style: none; display: flex; gap: 1.75rem; margin: 0; padding: 0; align-items: center; }
nav.site a { color: var(--muted); text-decoration: none; }
nav.site a:hover { color: var(--accent-2); }

/* dropdown */
.menu { position: relative; }
.menu > button {
  font: inherit; color: var(--muted); background: none; border: 0;
  cursor: pointer; padding: 0; display: inline-flex; align-items: center; gap: 0.35rem;
}
.menu > button:hover { color: var(--accent-2); }
.menu > button::after {
  content: ""; width: 0.4em; height: 0.4em; border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor; transform: rotate(45deg) translateY(-0.1em);
}
.menu-panel {
  position: absolute; right: 0; top: calc(100% + 0.9rem);
  background: var(--bg); border: 1px solid var(--rule); border-radius: 10px;
  padding: 0.5rem; min-width: 21rem; display: none;
  box-shadow: 0 12px 40px rgba(0,0,0,0.14);
}
.menu[open] .menu-panel, .menu-panel:hover { display: block; }
.menu:hover .menu-panel { display: block; }
.menu-panel a {
  display: block; padding: 0.6rem 0.75rem; border-radius: 6px;
  color: var(--ink); line-height: 1.35;
}
.menu-panel a:hover { background: var(--panel); color: var(--ink); }
.menu-panel a small { display: block; color: var(--faint); font-size: 0.78rem; margin-top: 0.1rem; }

@media (max-width: 46rem) {
  /* The six areas are reachable from the home grid; the dropdown would only
     unfold into an unreadable column at this width. */
  nav.site > ul { gap: 1.25rem; font-size: 0.875rem; }
  .menu { display: none; }
  header.site { position: static; padding: 0.9rem 0; }
  .hero { padding: 2.75rem 0 2rem; }
  .areas { grid-template-columns: 1fr; margin: 2rem 0; }
  main.wrap { padding-top: 2.5rem; }
  .standards li { flex-direction: column; gap: 0.15rem; }
  .standards li b { min-width: 0; }
}

/* ---------- hero ---------- */
.hero { padding: 4.5rem 0 3rem; border-bottom: 1px solid var(--rule); }
.hero h1 {
  font-size: clamp(2.1rem, 5.2vw, 3.1rem); line-height: 1.1;
  letter-spacing: -0.025em; margin: 0.75rem 0 1.25rem; max-width: 20ch;
}
.hero .lede { font-size: 1.2rem; line-height: 1.55; color: var(--muted); max-width: 46ch; margin: 0; }

/* ---------- type ---------- */
h1 { font-size: clamp(1.9rem, 4.5vw, 2.6rem); line-height: 1.15; letter-spacing: -0.02em; font-weight: 600; margin: 0 0 1rem; }
h2 { font-size: 1.35rem; line-height: 1.3; font-weight: 600; margin: 3rem 0 0.75rem; letter-spacing: -0.01em; }
h3 { font-size: 1.0625rem; font-weight: 600; margin: 2rem 0 0.5rem; font-family: ui-sans-serif, system-ui, sans-serif; }
p { margin: 0 0 1.1rem; }
a { color: var(--accent-2); text-underline-offset: 2px; }
.lede { font-size: 1.2rem; line-height: 1.55; color: var(--muted); margin-bottom: 2rem; }
.kicker {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.75rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--faint); margin: 0 0 0.5rem;
}
main.wrap { padding-top: 3.5rem; }
main.wrap.wide { padding-top: 0; }

/* ---------- area cards ---------- */
.areas { display: grid; grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); margin: 3rem 0; }
.area {
  background: var(--bg); padding: 1.6rem 1.5rem; text-decoration: none; color: inherit;
  display: flex; flex-direction: column; transition: background 0.15s;
}
.area:hover { background: var(--panel); }
.area .n {
  font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 0.75rem;
  color: var(--accent-2); margin-bottom: 0.6rem; letter-spacing: 0.05em;
}
.area h3 { font-family: inherit; font-size: 1.125rem; margin: 0 0 0.5rem; line-height: 1.25; }
.area p { font-size: 0.9rem; color: var(--muted); margin: 0; line-height: 1.5; }

/* ---------- doc meta ---------- */
.docmeta {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.8125rem; color: var(--faint);
  border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  padding: 0.75rem 0; margin: 0 0 2.5rem;
  display: flex; gap: 1.5rem; flex-wrap: wrap;
}

/* ---------- entries ---------- */
.entry { border-top: 1px solid var(--rule); padding: 1.5rem 0; }
.entry:last-of-type { border-bottom: 1px solid var(--rule); }
.entry h3 { margin: 0 0 0.35rem; font-size: 1.125rem; font-family: inherit; }
.entry h3 a { text-decoration: none; color: var(--ink); }
.entry h3 a:hover { color: var(--accent-2); }
.entry p { margin: 0 0 0.5rem; color: var(--muted); font-size: 0.9375rem; }
.entry .tag { font-family: ui-sans-serif, system-ui, sans-serif; font-size: 0.75rem; color: var(--faint); }
.entry.pending h3 { color: var(--faint); }
.entry.pending .tag::before { content: "In preparation · "; }

/* ---------- blocks ---------- */
.note {
  background: var(--panel); border-left: 3px solid var(--accent-2);
  padding: 1rem 1.25rem; margin: 1.75rem 0; font-size: 0.9375rem;
}
.note p:last-child { margin-bottom: 0; }
.note .lbl {
  font-family: ui-sans-serif, system-ui, sans-serif; font-weight: 600;
  font-size: 0.75rem; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--accent-2); display: block; margin-bottom: 0.4rem;
}

.tablewrap { overflow-x: auto; margin: 1.5rem 0; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th {
  text-align: left; font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.75rem; letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--muted); border-bottom: 1.5px solid var(--accent-2);
  padding: 0.5rem 0.75rem 0.4rem; vertical-align: bottom;
}
td { padding: 0.6rem 0.75rem; border-bottom: 1px solid var(--rule); vertical-align: top; }

ol, ul { margin: 0 0 1.1rem; padding-left: 1.4rem; }
li { margin-bottom: 0.45rem; }

code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.875em; background: var(--panel); padding: 0.1em 0.35em; border-radius: 3px;
}

/* ---------- figures / diagrams ---------- */
figure.diagram { margin: 2.5rem 0; }
figure.diagram svg { display: block; width: 100%; height: auto; }
figure.diagram figcaption {
  font-family: ui-sans-serif, system-ui, sans-serif; font-size: 0.8125rem;
  color: var(--faint); margin-top: 0.85rem; line-height: 1.5;
}
.svg-bg { fill: var(--panel); }
.svg-box { fill: var(--bg); stroke: var(--rule); }
.svg-accent { fill: var(--accent-soft); stroke: var(--accent-2); }
.svg-line { stroke: var(--faint); fill: none; }
.svg-line-a { stroke: var(--accent-2); fill: none; }
.svg-t { fill: var(--ink); font-family: ui-sans-serif, system-ui, sans-serif; font-size: 12px; }
.svg-t-sm { fill: var(--muted); font-family: ui-sans-serif, system-ui, sans-serif; font-size: 10.5px; }
.svg-t-a { fill: var(--accent-2); font-family: ui-sans-serif, system-ui, sans-serif; font-size: 11px; font-weight: 600; }

.refs { font-size: 0.875rem; color: var(--muted); }
.refs li { margin-bottom: 0.6rem; }

.standards { list-style: none; padding: 0; font-size: 0.9rem; }
.standards li {
  padding: 0.5rem 0; border-bottom: 1px solid var(--rule);
  display: flex; gap: 1rem; align-items: baseline;
}
.standards li b { font-family: ui-sans-serif, system-ui, sans-serif; font-size: 0.8125rem; min-width: 9rem; color: var(--accent-2); }

/* ---------- footer ---------- */
footer.site {
  border-top: 1px solid var(--rule); margin-top: 5rem;
  padding: 2.5rem 0 3.5rem; font-size: 0.8125rem; color: var(--faint);
  font-family: ui-sans-serif, system-ui, sans-serif;
}
footer.site p { margin: 0 0 0.5rem; }
footer.site a { color: var(--muted); }

/* ==========================================================================
   Full-bleed hero with point-cloud canvas
   ========================================================================== */
.hero-full {
  position: relative; min-height: 86vh; display: flex; align-items: center;
  border-bottom: 1px solid var(--rule); overflow: hidden;
  background:
    radial-gradient(120% 80% at 78% 18%, var(--accent-soft) 0%, transparent 62%),
    var(--bg);
}
#scan { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-full .wrap { position: relative; z-index: 2; padding-top: 4rem; padding-bottom: 4rem; }
.hero-full h1 {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: clamp(2.3rem, 5.6vw, 4rem); line-height: 1.04;
  letter-spacing: -0.035em; font-weight: 650; max-width: 17ch; margin: 0.9rem 0 1.4rem;
}
.hero-full .lede { font-size: clamp(1.05rem, 1.7vw, 1.3rem); max-width: 50ch; color: var(--muted); }
.hero-cta {
  display: inline-flex; align-items: center; gap: 0.6rem; margin-top: 1.8rem;
  font-family: ui-sans-serif, system-ui, sans-serif; font-size: 0.9375rem; font-weight: 500;
  color: var(--bg); background: var(--ink); text-decoration: none;
  padding: 0.8rem 1.5rem; border-radius: 999px; transition: transform 0.15s, opacity 0.15s;
}
.hero-cta:hover { transform: translateY(-1px); opacity: 0.9; }
.hero-cta.ghost { background: transparent; color: var(--ink); border: 1px solid var(--rule); margin-left: 0.5rem; }

/* pillars */
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--rule); border-top: 1px solid var(--rule); }
.pillar { background: var(--bg); padding: 2.2rem 1.75rem 2rem; }
.pillar h3 { font-family: ui-sans-serif, system-ui, sans-serif; font-size: 1.0625rem; margin: 0 0 0.5rem; letter-spacing: -0.01em; }
.pillar p { font-size: 0.9rem; color: var(--muted); margin: 0 0 1rem; line-height: 1.55; }
.pillar ul { list-style: none; padding: 0; margin: 0; font-family: ui-sans-serif, system-ui, sans-serif; font-size: 0.8125rem; }
.pillar li { margin: 0; padding: 0.4rem 0; border-top: 1px solid var(--rule); }
.pillar li a { color: var(--muted); text-decoration: none; display: block; }
.pillar li a:hover { color: var(--accent-2); }

/* band */
.band { background: var(--panel); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); padding: 4rem 0; margin-top: 0; }
.band h2 { margin-top: 0; }

/* credentials */
.creds { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 2rem; margin: 2.5rem 0 0; }
.cred .v { font-family: ui-sans-serif, system-ui, sans-serif; font-size: 1.05rem; font-weight: 600; letter-spacing: -0.01em; margin-bottom: 0.4rem; }
.cred p { font-size: 0.9rem; color: var(--muted); margin: 0; line-height: 1.55; }

/* work */
.work { display: grid; grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); margin: 2.5rem 0; }
.work-item { background: var(--bg); padding: 1.75rem 1.6rem; }
.work-item .n { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 0.72rem; color: var(--accent-2); letter-spacing: 0.06em; }
.work-item h3 { font-family: inherit; font-size: 1.0625rem; margin: 0.5rem 0 0.5rem; }
.work-item p { font-size: 0.875rem; color: var(--muted); margin: 0; line-height: 1.55; }

@media (max-width: 46rem) {
  .hero-full { min-height: 72vh; }
  .pillars { grid-template-columns: 1fr; }
  .hero-cta.ghost { margin-left: 0; margin-top: 0.6rem; }
}