/* Zone Two. One light theme, deliberately: a landing page should look the
   same to everyone who arrives, not change with the visitor's OS setting. */
:root {
  color-scheme: light;
  --bg: #fdfcfa;
  --surface: #ffffff;
  --surface-2: #f5f3ef;
  --text: #1f1d1a;
  --muted: #6b6760;
  --line: #e7e3dc;
  --accent: #b4522a;
  --accent-soft: #fbeee7;
  --accent-text: #ffffff;
  --ok: #2f6f4f;
  --shadow: 0 1px 2px rgba(31,29,26,.04), 0 10px 30px rgba(31,29,26,.07);
  --radius: 12px;
  --radius-lg: 20px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 17px/1.62 ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 60rem; margin: 0 auto; padding: 0 20px; }
.prose { max-width: 38rem; }

.site-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.5rem 0; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--text); font-weight: 680; letter-spacing: -.015em; font-size: 1.05rem; }
.head-links a { color: var(--muted); text-decoration: none; margin-left: 1.6rem; font-size: .95rem; }
.head-links a:hover { color: var(--text); }

.hero { padding: 3.5rem 0 0; }
h1 { font-size: clamp(2.2rem, 5.6vw, 3.6rem); line-height: 1.05; letter-spacing: -.035em; margin: 0 0 1.1rem; max-width: 17ch; }
.lede { font-size: clamp(1.1rem, 2.2vw, 1.3rem); color: var(--muted); max-width: 36rem; margin: 0 0 2rem; }
.cta-row { display: flex; flex-wrap: wrap; gap: .9rem 1.3rem; align-items: center; }
.cta { display: inline-flex; align-items: center; gap: .55rem; background: var(--accent); color: var(--accent-text); font-weight: 620; padding: .9rem 1.5rem; border-radius: var(--radius); text-decoration: none; box-shadow: var(--shadow); }
.cta:hover { filter: brightness(1.06); }
.cta-sub { font-size: .9rem; color: var(--muted); margin: 1rem 0 0; }
.ghost { color: var(--accent); text-decoration: none; font-weight: 560; }
.ghost:hover { text-decoration: underline; }

/* chat */
.demo { margin: 3rem 0 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow); overflow: hidden; }
.demo-bar { display: flex; align-items: center; gap: .45rem; padding: .8rem 1.1rem; border-bottom: 1px solid var(--line); background: var(--surface-2); }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.demo-title { margin-left: .5rem; font-size: .8125rem; color: var(--muted); }
.demo-body { padding: 1.6rem; display: grid; gap: 1.2rem; }
.msg { display: flex; gap: .8rem; align-items: flex-start; }
.msg .who { flex: none; width: 1.8rem; height: 1.8rem; border-radius: 50%; display: grid; place-items: center; font-size: .7rem; font-weight: 700; background: var(--surface-2); color: var(--muted); border: 1px solid var(--line); }
.msg.you .who { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.msg .said { font-size: .97rem; }
.msg .said p { margin: 0 0 .65rem; }
.msg .said p:last-child { margin-bottom: 0; }
.metric { color: var(--accent); font-weight: 640; font-variant-numeric: tabular-nums; }

.plan { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin: .85rem 0; }
.plan div { display: grid; grid-template-columns: 5.5rem 1fr; gap: 1rem; padding: .6rem .9rem; font-size: .9rem; border-bottom: 1px solid var(--line); }
.plan div:last-child { border-bottom: 0; }
.plan div:nth-child(odd) { background: var(--surface-2); }
.plan .day { color: var(--muted); font-variant-numeric: tabular-nums; }
.pill { display: inline-flex; align-items: center; gap: .4rem; font-size: .8rem; color: var(--ok); font-weight: 600; margin-top: .3rem; }

section { padding: 4rem 0 0; }
h2 { font-size: 1.5rem; letter-spacing: -.025em; margin: 0 0 .5rem; }
.sec-lede { color: var(--muted); margin: 0 0 1.5rem; max-width: 34rem; }
h3 { font-size: 1.02rem; margin: 0 0 .3rem; letter-spacing: -.01em; }
p { margin: 0 0 1rem; }
a { color: var(--accent); text-underline-offset: 2px; }

.features { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.feature { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.3rem; }
.feature .ic { width: 2.1rem; height: 2.1rem; border-radius: 9px; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; margin-bottom: .8rem; }
.feature p { margin: 0; font-size: .92rem; color: var(--muted); }

.steps { display: grid; gap: 1.6rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); list-style: none; padding: 0; margin: 0; counter-reset: s; }
.steps li { counter-increment: s; }
.steps li::before { content: counter(s); display: grid; place-items: center; width: 1.9rem; height: 1.9rem; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-size: .85rem; font-weight: 700; margin-bottom: .6rem; }
.steps p { font-size: .92rem; color: var(--muted); margin: 0; }
.steps strong { color: var(--text); display: block; margin-bottom: .2rem; font-weight: 620; }

.facts { display: grid; gap: 1.5rem 2.5rem; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); }
.fact p { font-size: .92rem; color: var(--muted); margin: 0; }

.note { background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.3rem 1.4rem; font-size: .92rem; }
.note p { margin: 0 0 .8rem; }
.note p:last-child { margin: 0; }

footer { border-top: 1px solid var(--line); margin-top: 5rem; padding: 1.8rem 0 3.5rem; font-size: .9rem; color: var(--muted); }
.foot-row { display: flex; flex-wrap: wrap; gap: .75rem 1.5rem; align-items: center; justify-content: space-between; }
footer a { color: var(--muted); text-decoration: none; margin-right: 1.3rem; }
footer a:hover { color: var(--text); text-decoration: underline; }
.disclaimer { margin: 1.3rem 0 0; max-width: 46rem; font-size: .825rem; }

.prose h1 { font-size: clamp(1.9rem, 5vw, 2.6rem); margin-bottom: .75rem; }
.prose h2 { font-size: 1.15rem; margin: 2.5rem 0 .6rem; }
.prose .lede { font-size: 1.1rem; margin-bottom: 1rem; }
.updated { font-size: .825rem; color: var(--muted); margin-bottom: 2.5rem; }
code { font: .875em ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; background: var(--surface-2); border: 1px solid var(--line); border-radius: 4px; padding: .1em .35em; }

@media (max-width: 34rem) {
  .head-links a { margin-left: 0; margin-right: 1.3rem; }
  .demo-body { padding: 1.15rem; }
  .plan div { grid-template-columns: 4.2rem 1fr; gap: .7rem; }
}