:root {
  --bg: #fbfbf9;
  --ink: #15181d;
  --muted: #6a7078;
  --line: #d9dce0;
  --accent: #1d4ed8;        /* blueprint blue */
  --accent-soft: #eef2ff;
  --max: 760px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  font-size: 18px;
  line-height: 1.6;
  /* faint engineering grid */
  background-image:
    linear-gradient(to right, rgba(29,78,216,.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(29,78,216,.04) 1px, transparent 1px);
  background-size: 28px 28px;
}

.mono {
  font-family: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(251,251,249,.85);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}
.brand { font-weight: 500; color: var(--ink); font-size: 15px; }
.site-header nav { display: flex; gap: 20px; font-size: 14px; }
.site-header nav a { color: var(--muted); }
.site-header nav a:hover { color: var(--accent); text-decoration: none; }

/* Hero */
.hero { padding: 64px 0 8px; }
.label {
  color: var(--accent);
  font-size: 14px;
  letter-spacing: .08em;
  text-transform: uppercase;
  margin: 0 0 12px;
}
h1 {
  font-size: clamp(2.55rem, 7vw, 3.6rem);
  line-height: 1.05;
  margin: 0 0 20px;
  letter-spacing: -0.02em;
}
.lede { font-size: 1.18rem; max-width: 56ch; color: #2b3037; margin: 0 0 28px; }

.cta { display: flex; flex-wrap: wrap; gap: 12px; font-size: 15px; }
.btn {
  display: inline-block;
  padding: 10px 18px;
  border: 1px solid var(--accent);
  border-radius: 4px;
  background: var(--accent);
  color: #fff;
}
.btn:hover { background: #1740b8; text-decoration: none; }
.btn.ghost { background: transparent; color: var(--accent); }
.btn.ghost:hover { background: var(--accent-soft); }

/* Expo card — sits under the hero */
.expo-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 14px;
  max-width: 540px;
  margin: 40px auto 8px;
  padding: 34px 32px;
  background: linear-gradient(180deg, var(--accent-soft), #fff);
  border: 1.5px solid var(--accent);
  border-radius: 14px;
  box-shadow: 0 6px 22px -14px rgba(29,78,216,.5);
}
.expo-card .eyebrow {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent);
}
.expo-card img { height: 62px; width: auto; max-width: 90%; }
.expo-card .dates { font-size: 16px; font-weight: 500; color: var(--ink); }
.meet-blurb { margin: 2px 0 0; font-size: 16px; color: var(--ink); }
.meet-blurb a { font-weight: 500; }

/* Sections */
hr { border: none; border-top: 1px solid var(--line); margin: 56px 0; }
section { scroll-margin-top: 72px; }
h2 {
  font-size: 15px;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: .04em;
  margin: 0 0 28px;
}
h3 { font-size: 14px; color: var(--muted); font-weight: 500; margin: 0 0 8px; letter-spacing: .03em; }

/* Entries */
.entries { list-style: none; padding: 0; margin: 0; display: grid; gap: 34px; }
.entry-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.role { font-weight: 600; font-size: 1.14rem; }
.when { color: var(--muted); font-size: 14px; white-space: nowrap; }
.org { color: var(--muted); margin: 2px 0 10px; font-size: 1rem; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.logo {
  height: 22px;
  width: auto;
  max-width: 180px;
  vertical-align: middle;
}
.bullets { margin: 0; padding-left: 18px; color: #2b3037; }
.bullets li { margin: 4px 0; }

/* Projects */
.project { margin-bottom: 34px; }
.project p { margin: 8px 0 0; max-width: 64ch; }

/* Background columns */
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.muted { color: var(--muted); }
.small { font-size: 0.95rem; }

.tags { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.tags li {
  font-size: 13px;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 4px 9px;
  background: #fff;
  color: #2b3037;
}

/* Contact */
.links { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 8px; font-size: 15px; }

/* vCard QR — bottom of the page, scannable off a phone screen */
.vcard {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 14px;
  max-width: 560px;
  margin: 8px auto 0;
}
.vcard .qr {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
  box-shadow: 0 6px 22px -16px rgba(29,78,216,.5);
  line-height: 0;
}
.vcard .qr img { display: block; width: 420px; height: 420px; }
.vcard .qr-note { margin: 0; font-size: 15px; color: var(--muted); max-width: 30ch; }

/* Footer */
footer {
  margin-top: 64px;
  margin-bottom: 72px;
  border-top: 1px solid var(--line);
  padding: 24px;
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--muted);
}

@media (max-width: 560px) {
  body { font-size: 17px; }
  .hero { padding: 44px 0 8px; }
  .expo-card { margin-top: 32px; padding: 28px 22px; }
  .expo-card img { height: 50px; }
  .cols { grid-template-columns: 1fr; gap: 28px; }
  .site-header nav { gap: 14px; }
  footer { margin-bottom: 56px; }
}