@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@300;400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --ink: #14181D;
  --paper: #FAFAFA;
  --navy: #1A2C6E;
  --accent: #2E7DC7;
  --accent-dark: #1B5A94;
  --line: #D4D9DF;
  --text-secondary: #545E6B;
  --max: 1120px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 300;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 600;
  color: var(--navy);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.1rem, 4vw, 3.1rem); line-height: 1.2; font-weight: 600; }
h2 { font-size: clamp(1.4rem, 2.2vw, 1.8rem); line-height: 1.3; }
h3 { font-size: 1.1rem; font-weight: 600; }

p { max-width: 62ch; }

a { color: var(--navy); text-decoration: none; }

.eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-dark);
  display: block;
  margin-bottom: 0.9rem;
}

/* ---- ledger tick: signature divider element ---- */
.tick-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 2.6rem 0 1.8rem;
}
.tick-row .tick {
  position: relative;
  width: 26px;
  height: 1px;
  background: var(--accent);
  flex-shrink: 0;
}
.tick-row .tick::before {
  content: '';
  position: absolute;
  left: 0;
  top: -4px;
  width: 1px;
  height: 9px;
  background: var(--accent);
}
.tick-row .tick-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.tick-row .rule {
  flex: 1;
  height: 1px;
  background: var(--line);
}

/* ---- header ---- */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--paper);
  border-bottom: 1px solid var(--accent);
}
.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.2rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.logo-lockup { display: flex; align-items: center; gap: 0.65rem; }
.logo-lockup svg { display: block; flex-shrink: 0; }
.wordmark {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--navy);
  font-weight: 500;
}
nav { display: flex; gap: 2rem; }
nav a {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  position: relative;
  padding-bottom: 3px;
}
nav a:hover, nav a.active { color: var(--navy); }
nav a.active::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--accent);
}

/* ---- layout ---- */
main { max-width: var(--max); margin: 0 auto; padding: 0 2rem; }
.section { padding: 3.6rem 0; }
.section:first-of-type { padding-top: 3.2rem; }

.lede {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 60ch;
  margin-top: 1.2rem;
}

.body-copy { margin-top: 1.2rem; color: var(--text-secondary); line-height: 1.75; }
.body-copy strong { color: var(--ink); font-weight: 500; }

/* ---- hero watermark shape ---- */
.hero-wrap { position: relative; overflow: hidden; }
.hero-watermark {
  position: absolute;
  top: -40px;
  right: -60px;
  width: 380px;
  height: 380px;
  z-index: 0;
  pointer-events: none;
}
.hero-wrap .section, .hero-wrap .hero-grid { position: relative; z-index: 1; }

/* ---- hero with marginal annotation (home) ---- */
.hero-grid {
  display: grid;
  grid-template-columns: 1.7fr 1fr;
  gap: 3rem;
  align-items: start;
}
.annotation {
  border-left: 1px solid var(--accent);
  padding-left: 1.4rem;
  margin-top: 0.5rem;
}
.annotation .figure {
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 700;
  font-size: 2.4rem;
  color: var(--navy);
  line-height: 1;
}
.annotation .cap {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.7rem;
  line-height: 1.6;
}
.annotation .src {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.68rem;
  color: var(--text-secondary);
  margin-top: 0.8rem;
  display: block;
  letter-spacing: 0.02em;
}

@media (max-width: 760px) {
  .hero-grid { grid-template-columns: 1fr; }
  .annotation { border-left: none; border-top: 1px solid var(--accent); padding-left: 0; padding-top: 1.2rem; }
}

/* ---- services list ---- */
.service-item {
  padding: 2.2rem 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 2rem;
}
.service-item:last-child { border-bottom: 1px solid var(--line); }
.service-item h3 { color: var(--navy); }
.service-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-dark);
  display: inline-block;
  margin-top: 0.6rem;
}
@media (max-width: 760px) {
  .service-item { grid-template-columns: 1fr; gap: 0.6rem; }
}

/* ---- contact registry ---- */
.registry { max-width: 46ch; }
.registry dt {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-top: 1.6rem;
}
.registry dd {
  font-size: 1.05rem;
  color: var(--ink);
  margin-top: 0.3rem;
}
.registry dd a { border-bottom: 1px solid var(--accent); }
.registry dd a:hover { color: var(--accent-dark); }

/* ---- credentials list (about) ---- */
.cred-list { margin-top: 1.5rem; color: var(--text-secondary); }
.cred-list li { list-style: none; padding-left: 1.2rem; position: relative; margin-bottom: 0.5rem; }
.cred-list li::before {
  content: '';
  position: absolute; left: 0; top: 0.6em;
  width: 6px; height: 1px; background: var(--accent);
}

/* ---- sources ---- */
.sources {
  margin-top: 2.4rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
}
.sources .sources-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  display: block;
  margin-bottom: 0.8rem;
}
.sources ol {
  list-style: none;
  counter-reset: src;
}
.sources li {
  counter-increment: src;
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
  padding-left: 1.4rem;
  position: relative;
  margin-bottom: 0.5rem;
  max-width: 62ch;
}
.sources li::before {
  content: "[" counter(src) "]";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
}
.sources a { color: var(--text-secondary); border-bottom: 1px solid var(--line); }
.sources a:hover { color: var(--navy); border-bottom-color: var(--accent); }

/* ---- footer ---- */
footer {
  border-top: 1px solid var(--line);
  margin-top: 4rem;
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.2rem 2rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

/* ---- motion: quiet entrance only ---- */
.fade-up { animation: fadeUp 0.6s ease-out both; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .fade-up { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---- focus visibility ---- */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}