/* Yardstick Growth — shared styles
   Palette derived from measuring tools: boxwood rule, brass fittings, graphite. */

:root {
  --ground:      #FBFAF7;
  --surface:     #FFFFFF;
  --sunk:        #F3F0EA;
  --ink:         #17130F;
  --ink-soft:    #453D34;
  --ink-mute:    #786E62;
  --rule:        #E0DAD0;
  --rule-firm:   #C3B9AA;
  --brass:       #9A6E12;
  --brass-lit:   #D9A32B;
  --signal:      #9C2C1B;
  --good:        #3A5C3D;
  --good-soft:   #ECF2EB;
  --warn-soft:   #FBF3E2;

  --display: "Avenir Next", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --body:    Charter, "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --data:    ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground:#131110; --surface:#1C1917; --sunk:#252017;
    --ink:#F3EEE5; --ink-soft:#CBC2B4; --ink-mute:#968C7E;
    --rule:#302A22; --rule-firm:#473F34;
    --brass:#D9A32B; --brass-lit:#EFC35C; --signal:#E0705B;
    --good:#8CB78A; --good-soft:#1A231A; --warn-soft:#282013;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 68ch; }

h1, h2, h3, h4, .eyebrow, nav, .btn, .stat-n, .tag { font-family: var(--display); }
h1, h2, h3 { text-wrap: balance; margin: 0; letter-spacing: -.02em; }

a { color: var(--brass); text-underline-offset: 2px; }
a:focus-visible { outline: 2px solid var(--brass); outline-offset: 3px; border-radius: 2px; }

.eyebrow {
  font-size: 11px; font-weight: 600; letter-spacing: .15em;
  text-transform: uppercase; color: var(--ink-mute);
}

/* ---------- the rule: a measuring-tape motif used as a divider ---------- */
.rule-tape {
  height: 14px; display: flex; align-items: flex-end; gap: 0;
  border-bottom: 1px solid var(--rule-firm); margin: 0;
}
.rule-tape i { flex: 1; width: 1px; background: var(--rule-firm); height: 4px; }
.rule-tape i:nth-child(5n+1) { height: 10px; }
.rule-tape i:nth-child(10n+1) { height: 14px; background: var(--brass); }

/* ---------- header ---------- */
header.site {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--ground) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.bar { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 15px 0; }
.brand { display: flex; align-items: baseline; gap: 9px; text-decoration: none; color: var(--ink); }
.brand b { font-family: var(--display); font-weight: 700; font-size: 17px; letter-spacing: -.02em; }
.brand span { font-family: var(--data); font-size: 10.5px; color: var(--ink-mute); letter-spacing: .08em; text-transform: uppercase; }
nav { display: flex; gap: 22px; flex-wrap: wrap; }
nav a { font-size: 14.5px; color: var(--ink-soft); text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { color: var(--brass); }

/* ---------- hero ---------- */
.hero { padding: 86px 0 66px; }
.hero h1 { font-size: clamp(35px, 5.4vw, 58px); font-weight: 700; line-height: 1.04; }
.hero h1 em { font-style: normal; color: var(--brass); }
.hero p.lede { font-size: clamp(18px, 2.1vw, 21px); color: var(--ink-soft); max-width: 36em; margin: 22px 0 0; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.btn {
  display: inline-block; padding: 12px 22px; border-radius: 4px;
  font-size: 15px; font-weight: 600; text-decoration: none; border: 1px solid var(--ink);
  background: var(--ink); color: var(--ground);
}
.btn.ghost { background: transparent; color: var(--ink); }
.btn:hover { opacity: .88; }

/* ---------- sections ---------- */
section { padding: 62px 0; }
section.sunk { background: var(--sunk); border-block: 1px solid var(--rule); }
h2.sec { font-size: clamp(24px, 3vw, 32px); font-weight: 650; margin-bottom: 10px; }
.sec-sub { color: var(--ink-mute); max-width: 60ch; margin: 0 0 30px; }

/* ---------- proof numbers ---------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(168px, 1fr)); gap: 1px;
  background: var(--rule); border: 1px solid var(--rule); border-radius: 5px; overflow: hidden; }
.stats > div { background: var(--surface); padding: 22px 20px; }
.stat-n { font-size: 27px; font-weight: 650; font-variant-numeric: tabular-nums; letter-spacing: -.02em; }
.stat-n.brass { color: var(--brass); }
.stat-l { font-family: var(--display); font-size: 12.5px; color: var(--ink-mute); line-height: 1.4; margin-top: 8px; }

/* ---------- cards ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.card {
  background: var(--surface); border: 1px solid var(--rule); border-left: 3px solid var(--brass);
  border-radius: 5px; padding: 24px 24px 26px;
}
.card h3 { font-size: 17.5px; font-weight: 650; margin-bottom: 9px; }
.card p { margin: 0; color: var(--ink-soft); font-size: 15.5px; }
.card ul { margin: 12px 0 0; padding-left: 19px; }
.card li { font-size: 15px; color: var(--ink-soft); margin-bottom: 6px; }
.card li::marker { color: var(--rule-firm); }
.card a.more { display: inline-block; margin-top: 14px; font-family: var(--display); font-size: 14px; font-weight: 600; }

/* ---------- steps ---------- */
.steps { counter-reset: s; display: grid; gap: 2px; }
.step { display: grid; grid-template-columns: 46px 1fr; gap: 18px; padding: 22px 0; border-top: 1px solid var(--rule); }
.step:first-child { border-top: 2px solid var(--ink); }
.step .n { counter-increment: s; font-family: var(--data); font-size: 13px; color: var(--brass); padding-top: 3px; }
.step .n::before { content: counter(s, decimal-leading-zero); }
.step h3 { font-size: 17px; font-weight: 650; }
.step p { margin: 7px 0 0; color: var(--ink-soft); font-size: 15.5px; }

/* ---------- callout ---------- */
.callout { background: var(--sunk); border-left: 3px solid var(--brass); border-radius: 4px; padding: 22px 26px; margin: 28px 0; }
.callout p { margin: 0; }
.callout p + p { margin-top: 12px; }

/* ---------- tables ---------- */
.scroll { overflow-x: auto; margin: 24px 0; }
table { border-collapse: collapse; width: 100%; min-width: 460px; font-family: var(--display); font-size: 14.5px; }
th { text-align: left; font-size: 11px; letter-spacing: .09em; text-transform: uppercase; color: var(--ink-mute);
     padding: 0 14px 9px 0; border-bottom: 1px solid var(--rule-firm); }
td { padding: 11px 14px 11px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
td.n { font-family: var(--data); font-variant-numeric: tabular-nums; white-space: nowrap; }

/* ---------- faq ---------- */
details { border-bottom: 1px solid var(--rule); padding: 16px 0; }
summary { cursor: pointer; font-family: var(--display); font-weight: 600; font-size: 16px; }
details p { color: var(--ink-soft); margin: 12px 0 0; }

/* ---------- footer ---------- */
footer.site { border-top: 2px solid var(--ink); margin-top: 30px; padding: 34px 0 60px; }
.foot-grid { display: flex; flex-wrap: wrap; gap: 26px 60px; align-items: flex-start; }
footer.site p { margin: 6px 0 0; font-size: 15px; color: var(--ink-mute); }
footer.site a { color: var(--ink-soft); text-decoration: none; display: block; font-size: 15px; margin-top: 6px; }
footer.site a:hover { color: var(--brass); }

@media (max-width: 620px) {
  body { font-size: 16px; }
  .hero { padding: 56px 0 44px; }
  section { padding: 46px 0; }
  nav { gap: 14px; }
  nav a { font-size: 13.5px; }
  .step { grid-template-columns: 1fr; gap: 6px; }
}
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }