/* ──────────────────────────────────────────────────────────────────────────
   iNexus landing — built on the app's own tokens (static/styles.css).
   Serif display: Georgia 500 #2b2f36 · leads #5b616b · muted #8a9098
   Hairlines #EAEAEA / #F0F0F0 · chips #f3f4f6 / #e5e7eb · action #111
   No accent colour by design: the product's identity is restraint.
   ────────────────────────────────────────────────────────────────────────── */

:root {
  --ink:        #111111;
  --ink-serif:  #2b2f36;
  --ink-body:   #374151;
  --muted:      #5b616b;
  --muted-2:    #8a9098;
  --muted-3:    #a7adb5;
  --line:       #EAEAEA;
  --line-soft:  #F0F0F0;
  --surface:    #FFFFFF;
  --surface-2:  #FAFAFA;
  --chip:       #f3f4f6;
  --chip-line:  #e5e7eb;

  --serif: Georgia, 'Times New Roman', serif;
  --sans:  -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  --r-sm: 8px;
  --r-md: 11px;
  --r-lg: 14px;
  --r-pill: 20px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  background: var(--surface);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; background: none; border: none; }
ul { list-style: none; }

:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; border-radius: 4px; }

.wrap { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 28px; }
.wrap--narrow { max-width: 720px; }

/* ── NAV ─────────────────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 200ms;
}
.nav.is-stuck { border-bottom-color: var(--line-soft); }

.nav-inner { display: flex; align-items: center; gap: 28px; height: 62px; }

.nav-logo {
  font-family: var(--serif); font-size: 19px; font-weight: 500;
  color: var(--ink-serif); letter-spacing: .2px; flex: 0 0 auto;
}

.nav-links { display: flex; gap: 22px; margin-left: auto; }
.nav-links a { font-size: 13.5px; color: var(--muted); transition: color 150ms; }
.nav-links a:hover { color: var(--ink); }

.nav-cta {
  flex: 0 0 auto;
  padding: 8px 16px; border-radius: var(--r-md);
  background: var(--ink); color: #fff;
  font-size: 13.5px; font-weight: 600;
  transition: opacity 150ms;
}
.nav-cta:hover { opacity: .86; }

/* ── SHARED TYPE ─────────────────────────────────────────────────────────── */
.eyebrow {
  font-size: 11.5px; font-weight: 500; letter-spacing: .09em;
  text-transform: uppercase; color: var(--muted-3);
  margin-bottom: 18px;
}

.section-title {
  font-family: var(--serif); font-weight: 500;
  font-size: 34px; line-height: 1.22; letter-spacing: .2px;
  color: var(--ink-serif); margin-bottom: 14px;
}

.section-sub {
  font-size: 15px; color: var(--muted-2);
  max-width: 620px; margin-bottom: 52px;
}

.inline-link {
  display: inline-block; margin-top: 14px;
  font-size: 13.5px; color: var(--muted);
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px; transition: color 150ms, border-color 150ms;
}
.inline-link::after { content: ' →'; }
.inline-link:hover { color: var(--ink); border-color: var(--muted-3); }

/* ── BUTTONS ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 12px 22px; border-radius: var(--r-md);
  font-size: 14.5px; font-weight: 600;
  transition: opacity 150ms, border-color 150ms, color 150ms;
}
.btn--primary { background: var(--ink); color: #fff; }
.btn--primary:hover { opacity: .86; }
.btn--ghost { border: 1px solid var(--line); color: var(--ink); font-weight: 500; }
.btn--ghost:hover { border-color: var(--muted-3); }
.btn--quiet { color: var(--muted); font-weight: 500; padding-left: 6px; padding-right: 6px; }
.btn--quiet:hover { color: var(--ink); }

/* ── HERO ────────────────────────────────────────────────────────────────── */
.hero { text-align: center; padding: 92px 0 78px; }

.hero-title {
  font-family: var(--serif); font-weight: 500;
  font-size: 52px; line-height: 1.14; letter-spacing: .2px;
  color: var(--ink-serif); margin-bottom: 20px;
}

.hero-lead {
  font-family: var(--serif); font-size: 21px;
  color: var(--muted); margin-bottom: 16px;
}

.hero-sub {
  font-size: 15.5px; color: var(--muted-2);
  max-width: 560px; margin: 0 auto;
}

/* Signature block: the app's empty state, answering */
.ask { margin: 46px 0 40px; }

.chips {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 7px;
  margin-bottom: 22px;
}
.chip {
  padding: 6px 14px; border-radius: var(--r-pill);
  background: var(--chip); border: 1px solid var(--chip-line);
  font-size: 12.5px; color: var(--ink-body);
  transition: background 150ms, border-color 150ms, color 150ms;
}
.chip:hover { background: var(--chip-line); border-color: #d1d5db; color: var(--ink); }
.chip.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }

.answer {
  text-align: left;
  border: 1px solid var(--line); border-radius: var(--r-lg);
  background: var(--surface);
  padding: 26px 28px 22px;
  max-width: 640px; margin: 0 auto;
}
.answer--static { margin-top: 8px; }

.answer-q {
  font-family: var(--serif); font-size: 17px;
  color: var(--ink-serif); margin-bottom: 14px;
}
.answer-q::before { content: '“'; }
.answer-q::after  { content: '”'; }

.answer-a { font-size: 14.5px; color: var(--ink-body); margin-bottom: 20px; }
.answer-a strong { font-weight: 600; color: var(--ink); }

.ev { border-top: 1px solid var(--line-soft); }
.ev-row {
  display: grid;
  grid-template-columns: 62px 118px 1fr;
  gap: 12px; align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 13px;
}
.ev-date { color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }
.ev-kind { color: var(--muted-3); font-size: 12px; }
.ev-quote { color: var(--muted); }

.answer-foot { font-size: 12.5px; color: var(--muted-3); margin-top: 14px; }

.hero-cta { display: flex; justify-content: center; align-items: center; gap: 14px; }
.hero-note { font-size: 12.5px; color: var(--muted-3); margin-top: 18px; }

/* ── SECTIONS ────────────────────────────────────────────────────────────── */
.section { padding: 84px 0; border-top: 1px solid var(--line-soft); }
.section--alt { background: var(--surface-2); }

.cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 44px; }
.col { display: flex; flex-direction: column; align-items: flex-start; }

.col-title {
  font-family: var(--serif); font-weight: 500; font-size: 19px;
  color: var(--ink-serif); margin-bottom: 12px; line-height: 1.3;
}
.col-text { font-size: 14.5px; color: var(--muted); }

.list { margin-top: 16px; }
.list li {
  font-size: 13.5px; color: var(--muted-2);
  padding: 7px 0; border-top: 1px solid var(--line-soft);
}

.list--check li { padding-left: 20px; position: relative; color: var(--ink-body); }
.list--check li::before {
  content: '✓'; position: absolute; left: 0;
  color: var(--muted-3); font-size: 12px;
}
.list--check li.off { color: var(--muted-3); }
.list--check li.off::before { content: '·'; }

/* ── PRICING ─────────────────────────────────────────────────────────────── */
.tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.tier {
  display: flex; flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 28px 24px 24px;
}
.tier--featured { border-color: var(--ink); }

.tier-name {
  font-family: var(--serif); font-weight: 500; font-size: 21px;
  color: var(--ink-serif); margin-bottom: 6px;
}
.tier-note { font-size: 13.5px; color: var(--muted-2); min-height: 40px; }
.tier .list--check { margin-bottom: 24px; }
.tier .btn { margin-top: auto; text-align: center; }

/* ── WHY ─────────────────────────────────────────────────────────────────── */
.why { text-align: center; }
.why-title {
  font-family: var(--serif); font-weight: 500;
  font-size: 34px; line-height: 1.28; color: var(--ink-serif);
  margin-bottom: 22px;
}
.why-text {
  font-size: 15.5px; color: var(--muted);
  max-width: 580px; margin: 0 auto 16px;
}
.why .btn { margin-top: 22px; }

/* ── FOOTER ──────────────────────────────────────────────────────────────── */
.footer { border-top: 1px solid var(--line-soft); padding: 34px 0 44px; }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 16px; }
.footer-nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 20px; }
.footer-nav a { font-size: 13px; color: var(--muted-2); transition: color 150ms; }
.footer-nav a:hover { color: var(--ink); }
.footer-line { font-size: 11.5px; color: var(--muted-3); }

/* ── RESPONSIVE ──────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .cols, .tiers { grid-template-columns: 1fr; gap: 34px; }
  .nav-links { display: none; }
  .nav-links, .nav-cta { margin-left: 0; }
  .nav-inner { justify-content: space-between; }
  .hero-title { font-size: 36px; }
  .hero-lead { font-size: 18px; }
  .section-title, .why-title { font-size: 27px; }
  .hero { padding: 60px 0 54px; }
  .section { padding: 60px 0; }
}

@media (max-width: 560px) {
  .wrap { padding: 0 20px; }
  .hero-title { font-size: 31px; }
  .answer { padding: 20px 18px 18px; }
  .ev-row { grid-template-columns: 54px 1fr; row-gap: 3px; }
  .ev-kind { grid-column: 2; }
  .ev-quote { grid-column: 2; }
  .hero-cta { flex-direction: column; gap: 10px; }
  .hero-cta .btn { width: 100%; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}