/* ACTA — shared styles */
:root {
  --navy-950: #060f1f;
  --navy-900: #0b1f3a;
  --navy-800: #112a4d;
  --navy-700: #1a3a66;
  --navy-600: #2a5088;
  --navy-300: #7a93b3;
  --navy-200: #bdcadc;
  --navy-100: #e3eaf3;
  --navy-50:  #f4f7fb;
  --paper:    #fafbfc;
  --ink:      #0b1428;
  --ink-soft: #3a4863;
  --ink-mute: #6c7a93;
  --line:     #dbe2ec;
  --line-soft: #ecf0f5;

  --cyan:     #00d4e0;
  --cyan-deep:#00a3b0;
  --cyan-soft:#d6f7fa;

  --amber:    #ffb547;

  --radius-sm: 6px;
  --radius:    10px;
  --radius-lg: 18px;

  --shadow-sm: 0 1px 2px rgba(11,31,58,.04), 0 1px 1px rgba(11,31,58,.03);
  --shadow:    0 8px 24px -12px rgba(11,31,58,.18), 0 2px 6px rgba(11,31,58,.05);
  --shadow-lg: 0 30px 60px -28px rgba(11,31,58,.35);

  --font-sans: "Inter Tight", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --max: 1280px;
  --gutter: clamp(20px, 4vw, 56px);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-size: 16px;
  line-height: 1.55;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* Type */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan-deep);
  font-weight: 500;
}
.eyebrow-dark { color: var(--cyan); }
h1, h2, h3, h4 {
  font-family: var(--font-sans);
  font-weight: 500;
  letter-spacing: -0.022em;
  margin: 0;
  text-wrap: balance;
}
h1 { font-size: clamp(40px, 5.4vw, 76px); line-height: 1.02; letter-spacing: -0.03em; }
h2 { font-size: clamp(30px, 3.6vw, 48px); line-height: 1.08; letter-spacing: -0.025em; }
h3 { font-size: clamp(20px, 1.8vw, 24px); line-height: 1.25; }
p { margin: 0; text-wrap: pretty; }
.lede { font-size: clamp(17px, 1.4vw, 20px); line-height: 1.5; color: var(--ink-soft); max-width: 60ch; }

/* Layout */
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
section { padding: clamp(64px, 9vw, 128px) 0; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(140%) blur(12px);
  background: rgba(250,251,252,.78);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; gap: 40px;
  height: 68px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.nav-logo {
  font-weight: 600; letter-spacing: -0.04em;
  font-size: 22px; color: var(--ink);
  display: inline-flex; align-items: center; gap: 10px;
}
.nav-logo .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--cyan); box-shadow: 0 0 0 4px rgba(0,212,224,.15);
}
.nav-links { display: flex; gap: 28px; margin-left: auto; }
.nav-links a {
  font-size: 14px; color: var(--ink-soft); font-weight: 450;
  position: relative; padding: 4px 0;
  transition: color .2s;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px; background: var(--cyan);
}
.nav-cta {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--navy-900); color: white; font-size: 14px; font-weight: 500;
  padding: 9px 16px; border-radius: 999px; border: none;
  transition: background .2s;
}
.nav-cta:hover { background: var(--navy-800); }
.nav-cta::after {
  content: "→"; font-family: var(--font-sans);
  transition: transform .2s;
}
.nav-cta:hover::after { transform: translateX(2px); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 22px; border-radius: 999px;
  font-size: 15px; font-weight: 500;
  border: 1px solid transparent;
  transition: all .2s;
}
.btn-primary { background: var(--navy-900); color: white; }
.btn-primary:hover { background: var(--navy-800); }
.btn-secondary {
  background: transparent; color: var(--ink); border-color: var(--line);
}
.btn-secondary:hover { border-color: var(--ink); }
.btn-cyan { background: var(--cyan); color: var(--navy-900); }
.btn-cyan:hover { background: var(--cyan-deep); color: white; }
.btn-ghost-dark {
  background: transparent; color: white; border-color: rgba(255,255,255,.18);
}
.btn-ghost-dark:hover { border-color: rgba(255,255,255,.5); }

/* Footer */
.site-footer {
  background: var(--navy-950); color: var(--navy-200);
  padding: 80px 0 32px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand .nav-logo { color: white; font-size: 24px; }
.footer-brand p { color: var(--navy-300); margin-top: 16px; max-width: 32ch; line-height: 1.55; }
.footer-col h4 {
  font-size: 11px; font-family: var(--font-mono);
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--cyan); font-weight: 500; margin-bottom: 16px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer-col a { color: var(--navy-200); transition: color .2s; }
.footer-col a:hover { color: white; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 28px;
  font-size: 12px; color: var(--navy-300);
  font-family: var(--font-mono);
}
.footer-bottom .legal { display: flex; gap: 24px; }

@media (max-width: 880px) {
  .nav-links { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer-brand { grid-column: 1 / -1; }
}

/* Reusable: section header */
.section-head {
  display: grid; grid-template-columns: 1fr 1.5fr;
  gap: 64px; margin-bottom: 56px; align-items: end;
}
.section-head .lede { margin-top: 16px; }
@media (max-width: 880px) {
  .section-head { grid-template-columns: 1fr; gap: 24px; }
}

/* Card */
.card {
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.card:hover { border-color: var(--navy-300); }

/* Mono label */
.mono { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.04em; }

/* Image placeholders (striped) */
.placeholder {
  position: relative; overflow: hidden;
  border-radius: var(--radius);
  background:
    repeating-linear-gradient(
      135deg,
      rgba(11,31,58,.04) 0 12px,
      rgba(11,31,58,.07) 12px 24px
    ),
    var(--navy-50);
  border: 1px solid var(--line);
  display: grid; place-items: center;
  color: var(--ink-mute);
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.06em; text-transform: uppercase;
}
.placeholder.dark {
  background:
    repeating-linear-gradient(
      135deg,
      rgba(255,255,255,.03) 0 12px,
      rgba(255,255,255,.06) 12px 24px
    ),
    var(--navy-900);
  border-color: rgba(255,255,255,.08);
  color: var(--navy-300);
}
.placeholder span {
  background: white;
  padding: 6px 10px;
  border-radius: 4px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
}
.placeholder.dark span {
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.1);
  color: var(--navy-200);
}

/* Tag pill */
.tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-soft);
  padding: 5px 10px; border-radius: 999px;
  background: var(--navy-50); border: 1px solid var(--line);
}
.tag .swatch {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--cyan);
}

/* Page hero (inner pages) */
.page-hero {
  padding: 88px 0 56px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--navy-50) 0%, transparent 100%);
}
.page-hero .crumb {
  display: flex; gap: 8px; align-items: center;
  font-family: var(--font-mono); font-size: 12px;
  color: var(--ink-mute); margin-bottom: 24px;
}
.page-hero .crumb a:hover { color: var(--ink); }
.page-hero h1 { font-size: clamp(40px, 5vw, 64px); max-width: 18ch; }
.page-hero .lede { margin-top: 20px; }