/* ==========================================================================
   BRASS MARK
   Conservative. White paper, near-black ink, deep Rolex green accent.
   Inter for everything. Generous whitespace. No rounded corners, no shadows,
   no gradients. Mildly skeuomorphic touches reserved for product UI.
   ========================================================================== */

/* Color tokens ----------------------------------------------------------- */

:root {
  --paper:      #ffffff;
  --ink:        #111111;
  --ink-soft:   #2a2a2a;
  --muted:      #6b6b6b;
  --rule:       #e6e6e6;
  --tint:       #f6f6f4;

  /* Rolex green: deep, lustrous, used sparingly */
  --green:      #006039;
  --green-deep: #00422a;

  --bm-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
             "Helvetica Neue", Helvetica, Arial, sans-serif;
}

/* Reset & base ----------------------------------------------------------- */

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

html, body { margin: 0; padding: 0; }

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

body {
  font-family: var(--bm-sans);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; display: block; }

a {
  color: var(--green);
  text-decoration: none;
}
a:hover { text-decoration: underline; text-underline-offset: 3px; }

strong { font-weight: 600; }

/* Layout ----------------------------------------------------------------- */

.site-header,
section,
article,
.site-footer .footer-row {
  max-width: 1100px;
  margin: 0 auto;
}

/* Header ----------------------------------------------------------------- */

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.75rem 2.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  width: 10px;
  height: 10px;
  background: var(--green);
  display: inline-block;
}

.brand-name {
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: -0.005em;
}

.site-nav {
  display: flex;
  gap: 2rem;
}

.site-nav a {
  color: var(--ink-soft);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.site-nav a:hover {
  color: var(--green);
  text-decoration: none;
}

/* Hero ------------------------------------------------------------------- */

.hero {
  padding: 7rem 2.5rem 5rem;
}

.hero h1 {
  font-size: 3.25rem;
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.022em;
  margin: 0 0 1.75rem;
  max-width: 18ch;
  color: var(--ink);
}

.hero-lead {
  font-size: 1.1875rem;
  font-weight: 400;
  line-height: 1.55;
  color: var(--muted);
  max-width: 52ch;
  margin: 0;
}

/* Prose sections (home page) -------------------------------------------- */

section.prose {
  padding: 3rem 2.5rem;
}

section.prose + section.prose {
  border-top: 1px solid var(--rule);
}

section.prose h2 {
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--muted);
  margin: 0 0 1.5rem;
}

section.prose p {
  font-size: 1.0625rem;
  line-height: 1.6;
  max-width: 62ch;
  margin: 0 0 1rem;
  color: var(--ink-soft);
}

section.prose p.lede {
  font-size: 1.1875rem;
  color: var(--ink);
}

section.prose p.muted {
  color: var(--muted);
  font-size: 1rem;
}

/* Prose articles (About, Privacy, Terms) -------------------------------- */

article.prose {
  padding: 5rem 2.5rem 3rem;
}

article.prose h2 {
  font-size: 1.625rem;
  font-weight: 500;
  letter-spacing: -0.012em;
  line-height: 1.2;
  color: var(--ink);
  margin: 2.75rem 0 1rem;
}

article.prose h2:first-child {
  margin-top: 0;
}

article.prose p {
  font-size: 1.0625rem;
  line-height: 1.65;
  max-width: 62ch;
  margin: 0 0 1rem;
  color: var(--ink-soft);
}

article.prose p.lede {
  font-size: 1.1875rem;
  color: var(--ink);
}

/* Footer ----------------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--rule);
  margin-top: 6rem;
  padding: 2.5rem 0;
  color: var(--muted);
  font-size: 0.875rem;
}

.site-footer .footer-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0 2.5rem;
  gap: 2rem;
  flex-wrap: wrap;
}

.site-footer p { margin: 0; }

.site-footer a {
  color: var(--muted);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--green);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

/* Responsive ------------------------------------------------------------- */

@media (max-width: 720px) {
  .site-header { padding: 1.25rem 1.5rem; }
  .site-nav { gap: 1.25rem; }
  .hero { padding: 4rem 1.5rem 3rem; }
  .hero h1 { font-size: 2.25rem; }
  .hero-lead { font-size: 1.0625rem; }
  section.prose { padding: 2.5rem 1.5rem; }
  article.prose { padding: 3rem 1.5rem 2rem; }
  article.prose h2 { font-size: 1.375rem; }
  .site-footer .footer-row { padding: 0 1.5rem; }
}