/* Enduring Systems — production stylesheet. Faithful direction, light + dark.
   No JavaScript anywhere. Self-host the woff2 files for launch (see README). */
:root {
  --bg-primary: #FFFFFF;
  --bg-subtle: #F8F7F2;
  --text-primary: #0E0E0C;
  --text-secondary: #5A5853;
  --text-tertiary: #8A8880;
  --border: #E5E3DC;
  --accent: #7A2E2A;
  --max: 680px;
  --pad: 32px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Newsreader', 'Tiempos Headline', Georgia, 'Times New Roman', serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #0E0E0C;
    --bg-subtle: #1A1A18;
    --text-primary: #F4F2EC;
    --text-secondary: #9C9A92;
    --text-tertiary: #6E6C66;
    --border: #2A2A26;
    --accent: #C77B6E;
  }
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 17px; line-height: 1.65; font-weight: 400;
  text-rendering: optimizeLegibility; overflow-x: hidden;
  display: flex; flex-direction: column; min-height: 100vh;
}
::selection { background: color-mix(in oklab, var(--accent) 18%, var(--bg-primary)); }

.skip { position: absolute; left: -9999px; top: 8px; background: var(--text-primary); color: var(--bg-primary); padding: 8px 14px; font-size: 13px; z-index: 50; text-decoration: none; }
.skip:focus { left: 16px; }

.page { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 var(--pad); flex: 1 0 auto; }

.site-header { display: flex; justify-content: space-between; align-items: baseline; padding: 24px 0 24px; border-bottom: 0.5px solid var(--border); }
.wordmark { display: inline-flex; align-items: center; gap: 9px; font-family: var(--font-sans); font-size: 14px; font-weight: 500; letter-spacing: 0.14em; color: var(--text-primary); text-decoration: none; }
.wordmark::before { content: ""; width: 7px; height: 7px; background: var(--accent); flex: none; }
.site-nav { display: flex; gap: 26px; }
.site-nav a { font-size: 13px; color: var(--text-secondary); text-decoration: none; transition: color 150ms; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--text-primary); }

/* Landing */
.hero { padding: 28px 0 28px; border-bottom: 0.5px solid var(--border); }
.display { font-family: var(--font-serif); font-weight: 400; font-size: clamp(32px, 5.6vw, 46px); line-height: 1.16; letter-spacing: -0.015em; color: var(--text-primary); text-wrap: balance; }
.lead { font-size: 19px; line-height: 1.6; color: var(--text-secondary); max-width: 480px; margin-top: 26px; text-wrap: pretty; }
.section { padding: 20px 0; border-bottom: 0.5px solid var(--border); }
.section:last-of-type { border-bottom: none; }
.eyebrow { font-family: var(--font-sans); font-size: 13px; font-weight: 500; line-height: 1.4; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 20px; }
.section-body { max-width: 640px; }
.section-body p { font-size: 17px; color: var(--text-secondary); line-height: 1.7; text-wrap: pretty; }
.section-body p + p { margin-top: 20px; }
.premise-lead { font-family: var(--font-serif); font-style: italic; font-weight: 400; font-size: 25px; line-height: 1.45; color: var(--text-primary); margin-bottom: 24px; }
.principles { display: flex; flex-direction: column; gap: 22px; }
.principle h3 { font-family: var(--font-serif); font-style: italic; font-weight: 400; font-size: 20px; line-height: 1.4; color: var(--text-primary); margin-bottom: 8px; }
.principle p { font-size: 16px; color: var(--text-secondary); line-height: 1.7; }
.fields { display: grid; grid-template-columns: 1fr 1fr; gap: 22px 44px; max-width: 680px; }
.field h3 { font-family: var(--font-sans); font-size: 15px; font-weight: 500; color: var(--text-primary); margin-bottom: 8px; }
.field p { font-size: 16px; color: var(--text-secondary); line-height: 1.65; }
.contact-list { display: flex; flex-direction: column; gap: 13px; }
.contact-row { display: flex; gap: 16px; font-size: 16px; }
.contact-label { color: var(--text-secondary); min-width: 76px; flex: none; }
.contact-row a { color: var(--text-primary); text-decoration: none; transition: color 150ms; }
.contact-row a:hover { color: var(--accent); text-decoration: underline; text-decoration-thickness: 0.5px; text-underline-offset: 3px; }

/* Subpages */
.subpage main { padding: 52px 0 64px; }
.page-title { font-family: var(--font-serif); font-weight: 400; font-size: clamp(32px, 5vw, 44px); line-height: 1.18; letter-spacing: -0.015em; color: var(--text-primary); margin-bottom: 28px; }
.page-body { max-width: 560px; }
.page-body p { font-size: 18px; color: var(--text-secondary); line-height: 1.7; text-wrap: pretty; }
.page-body p + p { margin-top: 20px; }
.forthcoming { display: inline-block; margin-top: 36px; font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-tertiary); padding-top: 18px; border-top: 0.5px solid var(--border); }
.back-link { display: inline-block; margin-top: 48px; font-size: 13px; color: var(--text-secondary); text-decoration: none; }
.back-link:hover { color: var(--accent); }

.site-footer { flex: none; width: 100%; max-width: var(--max); margin: 0 auto; padding: 28px var(--pad) 24px; border-top: 0.5px solid var(--border); display: flex; justify-content: space-between; align-items: baseline; gap: 16px; font-size: 13px; color: var(--text-tertiary); }
.site-footer span { white-space: nowrap; }

a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 1px; }

@media (max-width: 767px) {
  :root { --pad: 20px; }
  .site-header { padding: 16px 0; }
  .hero { padding: 22px 0; }
  .section { padding: 16px 0; }
  .subpage main { padding: 32px 0 44px; }
  .lead { font-size: 18px; }
  .premise-lead { font-size: 22px; }
  .fields { grid-template-columns: 1fr; gap: 24px; }
  .site-nav { gap: 16px; }
  .site-nav a { font-size: 12px; }
}