/* Shared site styles. Page-specific CSS remains inline in each HTML file. Last refactor: 2026-05-09. */

:root {
  --paper: #ffffff;
  --ink: #0a0a0a;
  --ink-2: #5a5a57;
  --ink-3: #6b6b67;
  --mono: 'JetBrains Mono', ui-monospace, Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; background: var(--paper); }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
b, strong, h1, h2, h3, h4, h5, h6 { font-weight: 600; }

::selection { background: var(--ink); color: var(--paper); }

:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }

/* ---------- header (canonical: index.html) ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--paper);
  border-bottom: 1px solid rgba(10,10,10,0.08);
}
.header-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 22px 40px 16px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
}
.logo {
  font-family: var(--mono);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.02;
}
.logo span { display: block; }
.nav { display: flex; gap: 28px; }
.nav a {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  transition: opacity 160ms ease;
}
.nav a:hover { opacity: 0.55; }
.nav a[aria-current="page"] { border-bottom: 1px solid var(--ink); }

/* ---------- main wrapper (canonical: index.html) ---------- */
.main {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 40px 80px;
  position: relative;
}

/* ---------- verified-tick footer glyph (shared sizing) ---------- */
.footer .verified-tick { width: 20px; height: 20px; display: inline-block; }

/* ---------- responsive chrome (canonical: index.html) ---------- */
@media (max-width: 980px) {
  .header-inner { padding: 18px 28px 14px; flex-wrap: wrap; }
}
@media (max-width: 600px) {
  .nav { gap: 16px; flex-wrap: wrap; }
}